| primary structures of sm31/32 diagnostic proteins of schistosoma mansoni and their identification as proteases. | we have constructed cdna clones containing the complete nucleotide sequences coding for two highly antigenic schistosoma mansoni adult worm proteins, sm31 and sm32. the predicted amino acid sequence of sm31 shows significant homology to mouse, rat and human cathepsin b. the nucleotide sequence of sm32 is identical to that reported by others for s. mansoni "haemoglobinase'. the different nucleotide sequences demonstrate the existence of two different proteolytic enzymes, both of which are synthes ... | 1989 | 2725581 |
| vibrio sepsis in a cirrhotic patient. | vibrio vulnificus should be suspected in any soft tissue infection occurring after exposure to the marine environment. early recognition followed by appropriate antibiotic therapy and debridement of involved tissue are essential features in the treatment of these infections. | 1989 | 2734646 |
| ventricular arrhythmias and local electrograms after chronic regional denervation of the ischemic area in the pig heart. | cardiac denervation has been proved to reduce the incidence of coronary occlusion arrhythmias in digs, but the effect of limiting the extent of sympathectomy to the ischemic area, particularly in hearts with sparse coronary collateral circulation, as in the human heart, needs further investigation. ventricular arrhythmias and changes in epicardial direct current electrograms induced during acute left anterior descending coronary artery occlusion were recorded in 14 pigs subjected to regional den ... | 1989 | 2738265 |
| [complexing of bovine serum albumin with phosphatidyl choline liposomes]. | thermodynamic parameters of the bovine serum albumin interaction with phosphatidyl choline liposomes have been determined. it is shown that the bovine serum albumin is adsorbed on the liposomal surface without change of the globule conformation, the polar interactions making dominant contribution in immobilization. the complexing is characterized by a binding constant and a great number of binding sites. | 1989 | 2749908 |
| attempted passive transfer of a serum factor in chronic urticaria from human to monkey. | | 1989 | 2757947 |
| 2-bromo- and 16-bromo-estrogens and related compounds: potential inhibitors for both estradiol 2- and 16 alpha-hydroxylases in rat liver microsomes. | kinetic studies of inhibition of estradiol 2- and 16 alpha-hydroxylase activities in male rat liver microsomes with 2-bromoestrogens, 4-bromo-estrone (4-bre1), 16 alpha- and 16 beta-bromoestrones and 16 beta-acetylthioestrone (16-acse1) were carried out. 2-bromoestrogens and 4-bre1 nonspecifically blocked the two enzyme activities in a competitive manner, and 2-bromo-estradiol (2-bre2) was the most potent inhibitor for the two hydroxylases among the 2- and 4-bromo steroids. kinetic data, the app ... | 1989 | 2761259 |
| transcriptional start site in the mouse cyp1a1 (cytochrome p1450) gene. | two transcriptional initiation sites have been described by different laboratories for the mouse cyp1a1 (cytochrome p1450) gene: start site ti, at the beginning of the nontranslated 87-bp first exon, and start site tii, 635 bp downstream from site ti within the 2,380-bp first intron. site ti was characterized in normal c57bl/6 mouse liver, whereas site tii was described in a high activity variant line (hav cells) derived from the mouse hepatoma hepa-1c1c7 wild type (wt) established cell line. it ... | 1989 | 2766934 |
| [cardiovascular risk factors in children and adolescents in fuenlabrada: objectives, features of the population, design, participation, equipment, laboratory technics, and quality control]. | fuenlabrada is at the present time the most industrialized town placed at the south are of madrid. this population has some peculiar attractive characteristics from the epidemiologic point of view. perhaps the most important is that the majority of its inhabitants are immigrant from other depressed rural areas of the country, with a low socio-economic and cultural level. the new conditions of life could have changed the life expectation and the causes of morbidity and mortality of this populatio ... | 1989 | 2772364 |
| phagocytosis by guinea pig polymorphonuclear leukocytes of liposomes stabilized with polysaccharides. | hemolysate-loaded liposomes were prepared with their surface coated by polysaccharides, carboxymethylchitin, carboxymethylcellulose and carboxymethylchitosan. phagocytosis by guinea pig polymorphonuclear leukocytes of these coated liposomes was measured in view of electrostatic interactions between the cells and the liposomes. this view revealed to hold at least in quite an early stage of phagocytosis, but some specific interactions were assumed to exist between the cells and the liposomes. n-ac ... | 1989 | 2775873 |
| suppression of antibody responses to the acetylcholine receptor by natural antibodies. | some relationships between "natural" physiological autoreactivity and antibody responses against the acetylcholine receptor (achr) were investigated. collections of unselected monoclonal antibodies were derived from nonmanipulated newborn mice of susceptible (balb.b) and resistant (balb/c) mouse strains, and screened for reactivity with heterologous achr. five in 200 balb/c but none in 200 balb.b clones were found reactive. four of these anti-achr antibodies were analyzed for connectivity to nin ... | 1989 | 2776827 |
| virulence of vibrio vulnificus strains isolated from seafoods. | a study was carried out on the relation between virulence of v. vulnificus assessed by ld50 in mice and other markers. v. vulnificus strains isolated from seafoods had ld50 ranging from 10(3)-10(7) for mice. strains showing ld50 10(6) or less were generally haemolytic and settled after boiling. resistance to bactericidal action of serum and ability to take up congo red was shown by all the strains. | 1989 | 2777343 |
| human eosinophils express cd4 protein and bind human immunodeficiency virus 1 gp120. | the cd4 glycoprotein, expressed on leukocytes belonging to subsets of t lymphocytes and to cells of monocyte/macrophage lineage, participates in the functioning of t cells and serves as a receptor for hiv-1 and hiv-2. human eosinophils, a class of granulocytic leukocytes, have been found to express cd4. with anti-cd4 mabs cd4 was demonstrable on eosinophils from both normal and eosinophilic donors. eosinophils synthesized a 55-kd cd4 polypeptide immunoprecipitable with two anti-cd4 mabs. eosinop ... | 1989 | 2783333 |
| effect of vitamin d metabolites on calcitriol metabolism in experimental renal failure. | previous studies from our laboratory have demonstrated that metabolic clearance rate (mcr) of calcitriol is decreased in experimental renal failure. in this experiment, we examined the effects of calcitriol, 25-hydroxyvitamin d3 (25(oh)d3) and 24,25-dihydroxyvitamin d3 (24,25(oh)2d3) on the mcr of calcitriol in renal failure produced in rats by partial nephrectomy. the mcr of calcitriol in these rats with renal failure was significantly lower than in control rats with sham operations. plasma con ... | 1989 | 2789310 |
| [intestinal microbial ecology and its modulation under the influence of immunodepressants]. | oral administration of immunodepressants such as imuran (purine analog) and batriden (gossypol derivative) for 3 months led to development of dysbacterioses in various sections of the rat gastrointestinal tract. the dysbacterioses differed in their levels and the pattern of the recovery process. as compared to batriden, imuran in a dose of 30 mg/kg body weight administered at the early observation periods (days 7, 14 and 30) induced more marked disorders in the intestine microecology. the imuran ... | 1989 | 2802878 |
| role of carboxylesterase in soman, sarin and tabun poisoning in rats. | tocp (triorthocresyl phosphate) inhibits carboxylesterase (carbe) activity in rat plasma and liver and significantly increases soman, sarin and tabun toxicity. application of these agents after tocp caused strong additional inhibition of carbe and cholinesterases (che) in rat red blood cells, plasma, liver, brain, diaphragm and intercostal muscle. after phenobarbital pretreatment, which induced carbe activity in plasma and liver by 80% and that of plasma che by 33%, acute toxicity of soman and t ... | 1989 | 2813290 |
| the dermatopathologist and human immunodeficiency virus infection. | | 1989 | 2817921 |
| [mechanisms of hypergastrinemia after vagotomy]. | | 1987 | 2824916 |
| [mechanisms of hypergastrinemia after vagotomy]. | | 1987 | 2824916 |
| dopamine denervation of the nucleus accumbens induces a selective increase in the number of delta-opioid binding sites. | selective lesions of dopamine (da) neurons of the nucleus accumbens were made in rats by local injections of 6-hydroxydopamine (6-ohda). seven days after 6-ohda, the binding affinities and capacities at mu-, delta- and kappa-opioid binding sites were determined in the nucleus accumbens by selective labelling techniques. 6-ohda pretreatment caused a significant increase in the number of delta-opioid binding sites (+30%) while the number of mu-, kappa- and total sites was not modified. the affinit ... | 1987 | 2825926 |
| dopamine denervation of the nucleus accumbens induces a selective increase in the number of delta-opioid binding sites. | selective lesions of dopamine (da) neurons of the nucleus accumbens were made in rats by local injections of 6-hydroxydopamine (6-ohda). seven days after 6-ohda, the binding affinities and capacities at mu-, delta- and kappa-opioid binding sites were determined in the nucleus accumbens by selective labelling techniques. 6-ohda pretreatment caused a significant increase in the number of delta-opioid binding sites (+30%) while the number of mu-, kappa- and total sites was not modified. the affinit ... | 1987 | 2825926 |
| overlapping distributions of receptors for atrial natriuretic peptide and angiotensin ii visualized by in vitro autoradiography: morphological basis of physiological antagonism. | atrial natriuretic peptides exert actions on many key organs involved in blood pressure and water and electrolyte balance. many of these actions result in a physiological antagonism of angiotensin. to investigate the morphological basis of this interaction, we have mapped the distribution of receptors for atrial natriuretic peptide and angiotensin ii in a number of target organs, using 125i-labelled rat atrial natriuretic peptide (99-126) and 125i-labelled [sar1,ile8]angiotensin ii. in the kidne ... | 1987 | 2825937 |
| cytomegalovirus pneumonia. | cytomegalovirus (cmv) is a common virus that asymptomatically infects the majority of the population by early adulthood. after initial infection, the virus remains in a latent state in the host and can be reactivated under a variety of conditions. in contrast to the normal host, both primary and reactivated symptomatic cmv infections are common in certain immunocompromised patients including organ transplant recipients and patients with the acquired immunodeficiency syndrome (aids). one of the m ... | 1987 | 2827281 |
| mononuclear cell infiltration in central portions of human astrocytomas. | the mononuclear cell infiltration in the central portion of human low- and high-grade astrocytomas has been examined using monoclonal antibodies to cell surface differentiation antigens. there was no significant difference between the number of t cells, b cells, or macrophages. the okt8+ (suppressor/cytotoxic) t cell population was the major lymphocyte subset in the infiltrates. there was, however, indirect evidence for a proportion of the total okt8+ cells being natural killer cells. overall, t ... | 1988 | 2830373 |
| mononuclear cell infiltration in central portions of human astrocytomas. | the mononuclear cell infiltration in the central portion of human low- and high-grade astrocytomas has been examined using monoclonal antibodies to cell surface differentiation antigens. there was no significant difference between the number of t cells, b cells, or macrophages. the okt8+ (suppressor/cytotoxic) t cell population was the major lymphocyte subset in the infiltrates. there was, however, indirect evidence for a proportion of the total okt8+ cells being natural killer cells. overall, t ... | 1988 | 2830373 |
| cilia-associated respiratory (car) bacillus infection of obese mice. | cilia-associated respiratory (car) bacillus was identified in respiratory tract lesions of obese mice dying of chronic respiratory disease. neither mycoplasma pulmonis nor pathogenic bacteria were isolated from cultures of the lesions at necropsy, but there was serologic and histologic evidence of respiratory virus infection. cranial-ventral areas of lung were firm and demarcated from unaffected lung at gross examination, and representative tissue sank in water. microscopically, there was suppur ... | 1988 | 2830699 |
| cilia-associated respiratory (car) bacillus infection of obese mice. | cilia-associated respiratory (car) bacillus was identified in respiratory tract lesions of obese mice dying of chronic respiratory disease. neither mycoplasma pulmonis nor pathogenic bacteria were isolated from cultures of the lesions at necropsy, but there was serologic and histologic evidence of respiratory virus infection. cranial-ventral areas of lung were firm and demarcated from unaffected lung at gross examination, and representative tissue sank in water. microscopically, there was suppur ... | 1988 | 2830699 |
| cloning and expression of the vibrio cholerae neuraminidase gene nanh in escherichia coli. | a cosmid gene bank of vibrio cholerae 395, classical ogawa, was screened in escherichia coli hb101 for expression of the vibrio neuraminidase (nanase) gene nanh (n-acylneuraminate glycohydrolase). positive clones were identified by their ability to cleave the fluorogenic nanase substrate 2'-(4-methylumbelliferyl)-alpha-d-n-acetylneuraminic acid. seven nanase-positive clones were detected after screening 683 cosmid isolates with a rapid, qualitative plate assay method. the nanh gene was subcloned ... | 1988 | 2832365 |
| cloning and expression of the vibrio cholerae neuraminidase gene nanh in escherichia coli. | a cosmid gene bank of vibrio cholerae 395, classical ogawa, was screened in escherichia coli hb101 for expression of the vibrio neuraminidase (nanase) gene nanh (n-acylneuraminate glycohydrolase). positive clones were identified by their ability to cleave the fluorogenic nanase substrate 2'-(4-methylumbelliferyl)-alpha-d-n-acetylneuraminic acid. seven nanase-positive clones were detected after screening 683 cosmid isolates with a rapid, qualitative plate assay method. the nanh gene was subcloned ... | 1988 | 2832365 |
| propranolol enhances in vitro interleukin 2 receptor expression on human lymphocytes. | interleukin 2 receptor (il-2r) expression was assessed, using anti-tac monoclonal antibody, after incubation of human lymphocytes with the beta-adrenoceptor antagonist propranolol (pro). one-hour incubation of mononuclear cells (mnc) with pro resulted in an increase of tac positive cells. the greatest rise was observed with a pro concentration of 10(-6) m (29% ring-stained cells compared with 0% in the control group). cells cultured for 3 days with pro showed a lower proportion of tac positive c ... | 1988 | 2836304 |
| [fatal septicemia of vibrio vulnificus in a patient with chronic hepatitis]. | | 1987 | 2836645 |
| mechanism of the epsp synthase catalyzed reaction: evidence for the lack of a covalent carboxyvinyl intermediate in catalysis. | in order to detect covalent reaction intermediates in the 5-enolpyruvylshikimate-3-phosphate (epsp) synthase reaction, we have investigated the interaction of epsp synthase with the reaction product epsp. an exchange of epsp-methylene protons could be demonstrated by incubating epsps with epsp in d2o. since trace amounts of contaminating pi would lead to reversal of epsps reaction and hence methylene proton exchange, we added pyruvate kinase, adp, mg++ and k+. under these conditions, any contami ... | 1988 | 2838023 |
| transcriptional regulation of the gene encoding the major surfactant protein (sp-a) in rabbit fetal lung. | the expression of the major protein of rabbit pulmonary surfactant (sp-a), a glycoprotein of mr congruent to 29,000-36,000, is regulated during development and by hormones. in the present study, utilizing a cdna insert complementary to mrna coding for sp-a and nuclear transcription elongation assays, we have investigated the developmental and hormonal regulation of transcription of the sp-a gene in rabbit fetal lung tissue. the relative rates of transcription of sp-a mrna increased as a function ... | 1988 | 2848814 |
| [the entero-insular axis: the new incretin candidate glucagon-like peptide-1(7-36)amide (glp-1(7-36))amide]. | the functional connection between the gut and pancreatic islets is described by the term "enteroinsular axis". a humoral factor of the gut that might enhance the glucose-induced secretion of insulin is named "incretin". for many years glucose-dependent insulin-releasing polypeptide (gip) was the strongest incretin candidate. however, recent evidence suggests that glucagon-like peptide-1(7-36)amide represents a more potent physiological incretin. the sequence of glp-1 is identical in various mamm ... | 1988 | 2849249 |
| factors influencing the severity of escherichia coli and avian adenovirus group ii infections in chickens. | chickens from lines selectively bred for either a high (hh) or low (ll) antibody response to sheep erythrocytes were challenged intravenously with avian adenovirus group ii (aa). spleen size was determined 6 days later. in some experiments the responses of chickens to aa and escherichia coli infections were compared. the level of corticosterone in the feed (15 mg/kg) which resulted in the lowest incidence of pericarditis in response to e. coli resulted in the greatest incidence of large spleens ... | 1988 | 2849405 |
| suppression of sv40-promoted gene expression by differentiation of preadipose cells. | when a plasmid bearing the chloramphenicol acetyltransferase (cat) gene under the control of an sv40 early promoter is introduced into preadipose or adipose cells of line 3t3-f442a, the promoter directs high levels of transient expression of cat. however, when the plasmid is introduced into preadipose cells and the cells are then allowed to differentiate into adipose cells, the expression of the cat gene is suppressed. in this process, the plasmid is not changed detectably in amount, topology, o ... | 1988 | 2849579 |
| [changes in the cyclic nucleotide system of t-lymphocytes in experimental tuberculosis in animals]. | | 1988 | 2851783 |
| a murine monoclonal antibody raised against human non-small cell carcinoma of the lung. | murine monoclonal antibodies (mabs) reactive with human non-small cell carcinoma of the lung (nsccl) were produced following immunization with a membrane preparation of calu-3, a human adenocarcinoma of the lung cell line grown in nude mice. positive hybrids unreactive with normal liver membranes and human peripheral white blood cells were selected for further testing. one mab (rs5-4h6) recognized an antigen expressed in a variety of lung and other carcinoma cell lines as detected by flow cytome ... | 1988 | 2853133 |
| survival of smallpox virus. | | 1985 | 2857360 |
| benzodiazepines enhance the muscimol-dependent activation of phospholipase a2 in glioma c6 cells. | glioma c6 cells were incubated with [14c]arachidonate to label membrane phospholipids. muscimol, a selective gamma-aminobutyric acid a receptor agonist, but not (-)-baclofen, a selective gamma-aminobutyric acid b receptor agonist, stimulates [14c]arachidonate release from c6 cells as a result of hydrolysis of a small pool of phosphatidylcholine and phosphatidylethanolamine by phospholipase a2. this release is facilitated by diazepam and a number of other benzodiazepines such as flunitrazepam, me ... | 1985 | 2857784 |
| immunochemical recognition of oxytocin by antiserum to l-prolyl-leucyl-glycine amide. | antisera were raised in rabbits against pro-leu-gly-nh2 (plg)-bovine thyroglobulin conjugates. specificity of the antisera towards oxytocin was evaluated by a radioimmunoassay as well as by immunohistochemical procedures on hypothalamic tissue and hormone bound to sepharose beads. it was concluded that immunization with plg can raise antisera that are specific to oxytocin. | 1985 | 2859563 |
| lymphatic transport of sodium cefoxitin in the presence of sodium 5-methoxysalicylate after injection into rat rectal connective tissue, femoral muscle and femoral vein. | lymphatic uptake of sodium cefoxitin after injection into rectal connective tissue was greater than after injection into the femoral muscle of rats. coadministration with sodium 5-methoxysalicylate enhanced lymphatic drug uptake at both sites. this enhancement may be an indirect result of 5-methoxysalicylate's suppression of vascular permeation of the cefoxitin. an adjuvant-induced increase in lymphatic fluid flow may also be partially involved in the enhancement of cefoxitin lymphatic transport ... | 1985 | 2863362 |
| [physiological and pharmacologic studies of the adrenal medulla by the measurement of plasma catecholamine levels]. | the new techniques for the assay of the plasma catecholamines: noradrenaline, dopamine and, most importantly, adrenaline, because of their sensitivity and precision, have provided new information about the physiology and the pharmacology of the adrenal medulla in animals and in man. the most effective of these new techniques are the radioenzymatic techniques. the activation of the adrenal medulla in the dog or the rat appears to be frequency-dependent by maintaining a fixed concentration ratio i ... | 1985 | 2863423 |
| hypotensive effects after topical and intra-arterial administration of alpha-adrenergic agonists in isolated perfused rabbit eyes. | the influence of nonselective and selective alpha-adrenergic agonists on intraocular pressure (iop) was studied in isolated arterially perfused rabbit eyes. drugs were given intra-arterially or topically. with either route of administration, no initial hypertensive phase was observed after l-epinephrine, l-norepinephrine, l-phenylephrine (alpha 1), or methoxamine (alpha 1), but there was an immediate ocular hypotensive effect. the alpha 2-agonist b-ht 920 caused a nonsignificant 1 mm hg fall in ... | 1985 | 2866480 |
| neural and pavlovian influences on immunity. | the traditional view that the nervous and immune systems are functionally independent (aside from general stress effects and autoimmune disorders of the nervous system) is being challenged by a new view that the nervous system regulates the activity of the immune system. if this is true, it should be possible to change the activity of the immune system by means of pavlovian conditioning, just as it is possible to condition other physiological events influenced by the autonomic nervous system or ... | 1985 | 2866484 |
| synthesis and quantitative structure-activity relationships of antiallergic 2-hydroxy-n-1h-tetrazol-5-ylbenzamides and n-(2-hydroxyphenyl)-1h-tetrazole-5-carboxamides. | the synthesis and antiallergic activity of a series of 2-hydroxy-n-1h-tetrazol-5-ylbenzamides and isomeric n-(2-hydroxyphenyl)-1h-tetrazole-5-carboxamides is described. a relationship between structure and intravenous antiallergic activity in the rat passive cutaneous anaphylaxis (pca) test has been established using a hansch/free-wilson model and used to direct studies toward potent derivatives. the contribution of physicochemical properties to activity is discussed. one member of this series, ... | 1986 | 2870188 |
| report of a wound infection caused by vibrio parahaemolyticus and vibrio vulnificus. | the present case describes a foot wound caused by a clam shell from which both vibrio parahaemolyticus and vibrio vulnificus were recovered. although extraintestinal infections associated with vibrio parahaemolyticus have been reported previously, the simultaneous isolation of two marine vibrios from our case suggests that these organisms may coexist in mixed infections from a common source. | 1986 | 2875824 |
| effects of somatostatin and sms 201-995 on carbohydrate metabolism in normal man. | growth hormone (gh) is important in diabetes in view of its anti-insulin actions and its relation to the long-term complications of the disease. the suppression of gh secretion in diabetics has theoretical and possible therapeutic interest. native somatostatin has multiple actions, including inhibition of the secretion of insulin, glucagon, thyroid-stimulating hormone (tsh), and various gut hormones. it also has inhibitory effects on gastrointestinal motility, exocrine secretion, nutrient absorp ... | 1986 | 2876501 |
| 1,4-dithiothreitol-induced changes in histamine h1-agonist efficacy and affinity in the longitudinal smooth muscle of guinea-pig ileum. | the effect of 1,4-dithiothreitol (dtt) on histamine h1-receptor agonist affinity and efficacy has been investigated in longitudinal muscle strips of guinea-pig ileum. exposure of ileal smooth muscle to dtt significantly increased the maximal responses to the partial agonists skf71473 and de-2pea, indicative of an increase in agonist efficacy. this effect was paralleled by a small decrease in ec50 values. in contrast, dtt produced a parallel displacement of the concentration-response curve to the ... | 1987 | 2880626 |
| glutathione metabolizing enzyme activities in human thyroid. | glutathione peroxidases, glutathione transferase, glutathione reductase and gamma-glutamyl transpeptidase activities were analyzed in human thyroid tissues obtained from 17 patients undergoing resectional surgery because of a malignancy. it was deduced, from measurements of glutathione peroxidase activity with both h202 and cumene hydroperoxide, that thyroid contains only the selenium enzyme. the absence of selenium independent glutathione peroxidase activity in thyroid was confirmed with gel fi ... | 1987 | 2883074 |
| absence of age-related changes in the binding of the beta adrenergic antagonist 125i-iodohydroxybenzylpindolol in rat heart. | the effect of age on the density and the affinity of beta adrenergic receptors was determined in the hearts of fischer 344 rats at three ages, 6, 12, and 24 months old. the binding of the beta adrenergic antagonist 125i-iodohydroxybenzylpindolol (ihyp), was used to quantitate and characterize cardiac beta adrenergic receptors. the maximal number of binding sites (bmax = f moles/mg of protein) were 26.3 +/- 2.5, 25.4 +/- 0.99, and 24.5 +/- 2.4 and the dissociation constants (kd = nm) were 0.166 + ... | 1987 | 2888126 |
| chlamydia trachomatis in antenatal clinics. | | 1987 | 2889053 |
| [h2-antihistaminics. 35. synthesis and h2-antagonistic action of imidazolylmethylthioalkyl-substituted 1,2,4-triazoles]. | | 1987 | 2889442 |
| a unique t-cell line derived from an htlv-1-negative adult t-cell leukemia patient. | a unique t-cell line, designated atl-5t, was established from lymphoma cells in pericardial effusion of an adult t-cell leukemia (atl) patient not carrying htlv-1 provirus. the cell line is okt4 and/or leu3a+ and okt8 and/or leu2a+, but interleukin 2 receptor (il2r)- and htlv-1 provirus genome negative, and has cytogenetically abnormal karyotypes. the cell line contains rearranged t-cell receptor beta-chain gene, which was identical in rearrangement pattern to the t-cell receptor beta-chain gene ... | 1987 | 2890613 |
| importance of pulmonary blood volume and aortic blood pressure in regulation of left ventricular function. | | 1988 | 2900297 |
| inhibitory effect of glycyrrhetinic acid derivatives on arachidonic acid-induced mouse ear oedema. | the inhibitory effects of glycyrrhetinic acid and its derivatives were examined on arachidonic acid (aa)-induced ear oedema in mice. of the compounds, dihemiphthalate derivatives of 18 beta-olean-12-ene-3 beta, 30-diol (iid, iid'), 18 beta-olean-9(11)12-diene-3 beta, 30-diol (iiia, iiia') and olean-11, 13(18)-diene-3 beta, 30-diol (iva, iva') showed a strong inhibition of ear oedema on both tropical (id50, 1.9, 2.8 and 1.7 mg/ear, respectively) and oral (id50, 90, 130 and 88 mg kg-1, respectivel ... | 1988 | 2900308 |
| neuronal interactions between neuropeptide y (npy) and catecholaminergic systems in the rat arcuate nucleus as shown by dual immunocytochemistry. | several recent studies have suggested interactions between catecholamine (ca) and neuropeptide y (npy) neuronal systems in the rat brain. in order to obtain morphological evidence for such ca/npy interactions in the arcuate nucleus, we have used a double immunostaining procedure using an anti-tyrosine hydroxylase (th) antiserum as a marker for catecholamine neurons and an anti-npy antiserum. this double staining, where the first staining is silver-gold intensified, was detectable at both light a ... | 1988 | 2901738 |
| changes in the metabolic profile of the equine gluteus medius as a function of sampling depth. | 1. cross sections from the middle of the gluteus medius were removed from 10 adult horses and used to evaluate changes in histochemically determined muscle fiber type and biochemically determined metabolic enzyme activities as a function of sample depth. 2. muscle fiber types determined using histochemical methods for myosin atpase (ph 9.4) and succinic dehydrogenase (sdh) activity indicated percent fast-twitch glycolytic (fg) muscle fibers decreased and slow-twitch oxidative (so) fibers increas ... | 1988 | 2907449 |
| eukaryote membrane genetics: the fo sector of mitochondrial atp synthase. | | 1988 | 2907692 |
| an experimental study of susceptibility to infection after hemorrhagic shock. | hemorrhagic shock has been associated with an increased risk of infection after injury. the immediate and long term effects of hemorrhagic shock without tissue injury on the susceptibility of an animal to infection and the efficacy of antibiotic prophylaxis to prevent infection in this setting were examined. sprague-dawley rats were subjected to hemorrhagic shock (ld15) by bleeding to a mean arterial pressure of 45 millimeters of mercury for 45 minutes and were resuscitated with shed blood and n ... | 1989 | 2911791 |
| human milk feeding enhances the urinary excretion of immunologic factors in low birth weight infants. | the effects of fortified human milk feedings on the urinary excretion of lactoferrin, lysozyme, secretory component, iga, and secretory iga antibodies to escherichia coli o antigens were investigated in very low birth wt infants. infants were maintained on either a human milk or a cow's milk preparation. the amounts of each immune factor that were ingested and excreted were quantified during balance studies conducted at 2.5 and 5 wk of age. serum levels of these immune factors were similar in bo ... | 1989 | 2919134 |
| degradation of type ix collagen by matrix metalloproteinase 3 (stromelysin) from human rheumatoid synovial cells. | the degradation of type ix collagen, a minor collagen in cartilage, was examined by treatment with three different types of matrix metalloproteinases (mmps) purified from the culture medium of rheumatoid synovial cells. neither mmp-1 (collagenase) nor mmp-2 (so-called 'gelatinase') could digest type ix collagen, but mmp-3 (stromelysin) readily degraded it into smaller fragments. this suggests that mmp-3 may be responsible for the pathological degradation and/or normal turnover of type ix collage ... | 1989 | 2920840 |
| vibrio vulnificus corneal ulcer. case reports. | | 1989 | 2923553 |
| dose-related effects of synthetic human beta-endorphin and naloxone on fed gastrointestinal motility. | in humans, plasma beta-endorphin levels rise during application of acute stressful stimuli (vertigo, cold pain, and transcutaneous electrical stimulation) that induce gut motor disturbances. whereas it is possible that circulating beta-endorphin participates in the mediation of these central effects on gut motility, its role cannot be established solely on the basis of changes in plasma levels. therefore, we designed the present study to investigate 1) the dose-related effects of intravenous syn ... | 1986 | 2942039 |
| structure-activity relationships of sex steroid analogs determined in vitro in a thyroid hormone-responsive membrane ca2+-atpase model. | physiological concentrations of l-t4 were found previously to stimulate ca2+-atpase activity in vitro in reticulocyte membranes from female rabbits and to inhibit this enzyme in reticulocyte membranes from males. in these previous studies, preincubation of intact cells or ghosts with testosterone (5 x 10(-11) m) converted female-source reticulocyte membranes to male-type responsiveness to thyroid hormone (inhibition of ca2+-atpase activity). preincubation of reticulocyte membranes with 17 beta-e ... | 1986 | 2946570 |
| structure-activity relationships of sex steroid analogs determined in vitro in a thyroid hormone-responsive membrane ca2+-atpase model. | physiological concentrations of l-t4 were found previously to stimulate ca2+-atpase activity in vitro in reticulocyte membranes from female rabbits and to inhibit this enzyme in reticulocyte membranes from males. in these previous studies, preincubation of intact cells or ghosts with testosterone (5 x 10(-11) m) converted female-source reticulocyte membranes to male-type responsiveness to thyroid hormone (inhibition of ca2+-atpase activity). preincubation of reticulocyte membranes with 17 beta-e ... | 1986 | 2946570 |
| ultrastructural changes in the sarcoplasmic reticulum in acute myocardial ischemia. | we investigated the morphologic changes in the sarcoplasmic reticulum (sr) in acute myocardial ischemia, induced by occlusion of the coronary artery in the canine heart, by freeze-fracture of sr in situ and in vitro, and they were compared to the alterations in ca++-stimulated atpase activity and protein composition of the isolated sr. both sr in situ and the isolated sr exhibited typical intramembranous particles with diameters of 70 to 90 a in freeze-fracture replicas. the intramembranous part ... | 1986 | 2948034 |
| differential effects of serotonin (5-ht1a and 5-ht2) agonists and antagonists on renin and corticosterone secretion. | the present study was designed to investigate the effect of distinct serotonin (5-ht1a and 5-ht2) agonists and antagonists on renin and corticosterone secretion. low doses of the selective 5-ht1a agonists 8-hydroxy-2-(di-n-propylamino)tetralin (8-oh-dpat) (5.0-500.0 micrograms/kg, i.p.) and ipsapirone (tvx q 7821; 0.5-2.5 mg/kg, i.p.), and of the 5-hydroxytryptamine (5-ht) agonist mk-212 (2.0 mg/kg, i.p.), did not elevate plasma renin activity (pra) and concentration (prc) 30 min postinjection. ... | 1987 | 2952898 |
| differential effects of serotonin (5-ht1a and 5-ht2) agonists and antagonists on renin and corticosterone secretion. | the present study was designed to investigate the effect of distinct serotonin (5-ht1a and 5-ht2) agonists and antagonists on renin and corticosterone secretion. low doses of the selective 5-ht1a agonists 8-hydroxy-2-(di-n-propylamino)tetralin (8-oh-dpat) (5.0-500.0 micrograms/kg, i.p.) and ipsapirone (tvx q 7821; 0.5-2.5 mg/kg, i.p.), and of the 5-hydroxytryptamine (5-ht) agonist mk-212 (2.0 mg/kg, i.p.), did not elevate plasma renin activity (pra) and concentration (prc) 30 min postinjection. ... | 1987 | 2952898 |
| experimental echinococcus granulosus infection in mice: immunocytochemical analysis of lymphocyte populations in local lymphoid infections during early infection. | the influence of subcutaneous infection with protoscoleces of echinococcus granulosus on the distribution of lymphocyte subsets in draining lymph nodes has been evaluated by immunocytochemical labelling of lymphocyte surface antigens. these studies reveal marked expansion of paracortical thy-1+, lyt-1+ cells and moderate proliferation of surface immunoglobulin-bearing b-cells immediately after infection. the lyt-1+:lyt-2+ ratio decreases rapidly during the first 21 days post-infection and remain ... | 1987 | 2956563 |
| a multicentre open clinical trial of teicoplanin in infections caused by gram-positive bacteria. | a multicentre open trial of teicoplanin in 81 centres in nine european countries included 1431 cases: 531 female, 900 male; mean age 49.4 years, range 1-93 years. these were hospitalized patients most of whom had infections caused by staphylococcus aureus (816 isolates). of a total of 1427 gram-positive pathogens 280 (19.6%) were methicillin resistant. there were 536 skin and soft tissue infections, 263 septicaemias, 135 lower respiratory tract infections, 179 joint and bone infections and 83 en ... | 1988 | 2965133 |
| cns-induced natriuresis during dopamine receptor blockade. further support for the existence of, at least, two separate natriuretic hormonal systems. | intracerebroventricular (icv) stimulation with hypertonic sodium chloride solutions has previously shown indications to stimulate the release of a blood-borne natriuretic factor. sodium excretion in this situation increases in the order of 10-20 times. acute isotonic volume expansion has shown to be a potent stimulus for endogenous release of the atrial natriuretic factor (anf). it has also been demonstrated that the natriuretic response to both volume expansion and exogenously applied anf can b ... | 1988 | 2976234 |
| restriction nuclease digestions driven to completion by escherichia coli rna polymerase and t4 gene 32 protein. | restriction enzyme digestions of large scale dna preparations often do not go to completion. this is due to product inhibition by the newly generated ends of the digested dna. the addition of exogenous proteins that bind tightly to the free ends of dna or to single-stranded dna will relieve this inhibition. we show that a considerable savings on restriction nucleases can be attained by the addition of rna polymerase or t4 gene 32 protein in stoichiometric amounts to the newly produced dna ends. | 1985 | 2981211 |
| herpes simplex virus and cytomegalovirus infections in burned patients. | herpesvirus infections are commonly seen in immunosuppressed patients and may account for considerable morbidity and some mortality. we prospectively studied 52 patients with severe burn injuries in order to determine the prevalence of viral infections in this group of patients. serologic testing was done each week to diagnose primary and reactivation infections. twenty-seven of 52 patients (52%) became infected with either herpes simplex virus (hsv) or cytomegalovirus (cmv) or both. hsv infecti ... | 1985 | 2981325 |
| conditioned taste aversion suppresses induction of delayed-type hypersensitivity immune reactions. | conditioned taste aversion was induced in mice by pairing saccharin drinking with an intraperitoneal injection of lithium chloride, a toxic but nonimmunosuppressive drug. conditioned mice showed not only suppressed saccharin drinking but also a 75% reduction in the induction of delayed-type hypersensitivity immune responses to low doses of sheep erythrocytes. this effect was observed with doses of lithium chloride which had no effect of their own on immune functions. in addition, a reduction in ... | 1985 | 2987987 |
| inflammatory myopathies: part 2. | | 1985 | 2988409 |
| receptors for epidermal growth factor in the rat uterus. | uterine membranes contain high affinity [dissociation constant (kd) = 0.36 nm], saturable binding sites for [125i]iodo-epidermal growth factor (egf). the binding of [125i] iodo-egf is specific since it is abolished by excess unlabeled egf but not by excess unlabeled insulin, fibroblast growth factor, or multiplication-stimulating activity. incubation of [125i] iodo-egf with uterine membranes, followed by chemical cross-linking with disuccinimidyl suberate and detergent extraction reveals a major ... | 1985 | 2988913 |
| the biologic significance of the mixed lymphocyte kidney culture in humans. | the mixed lymphocyte kidney culture (mlkc) in humans has been studied in normal and abnormal clinical conditions. human renal cortical cells were extracted by collagenase treatment from the kidneys of "normal" heart-beating cadaver organ donors (n = 13), patients with end-stage renal disease (esrd) at pretransplant bilateral nephrectomy and splenectomy (n = 13), and from irreversibly rejected renal allografts at the time of graft nephrectomy (n = 5). proliferation of peripheral blood t lymphocyt ... | 1985 | 2996186 |
| evaluation of a photolabile derivative of 1,25-dihydroxyvitamin d3 as a photoaffinity probe for 1,25-dihydroxyvitamin-d3 receptor in chick intestinal cytosol. | we evaluated the viability of 1 alpha, 25-dihydroxyvitamin d3-3 beta-[n-(4-azido-2-nitrophenyl)glycinate] (1,25-(oh)2-d3-ang), an analog of 1 alpha, 25-dihydroxyvitamin d3 (1,25-(oh)2-d3) as a photoaffinity probe for 1,25-(oh)2-d3 receptor in chick intestinal cytosol. a competitive-binding assay revealed that chick intestinal cytosolic 1,25-(oh)2- d3 receptor bound to 1,25-(oh)2-d3-ang approximately 20-times less effectively than it did to 1,25-(oh)2-d3. irradiation of 1,25-(oh)2-d3- ang in the ... | 1985 | 2998355 |
| effect of pyrimidinone treatment on lethal and immunosuppressive murine cytomegalovirus infection. | the 2-amino-5-halo-pyrimidinones, which are potent interferon inducers and antiviral agents, were found to be protective against lethal cytomegalovirus (cmv) challenge in weanling or neonatal mice when administered before virus challenge. this protection was dependent upon the dosage of pyrimidinone administered. weanling mice infected with a sublethal challenge of cmv exhibited moderate to severe immunosuppression as measured by reduced splenic cell blastogenic responses in vitro to the mitogen ... | 1985 | 3000290 |
| dimethylthiourea consumption reflects h2o2 concentrations and severity of acute lung injury. | even though dimethylthiourea (dmtu) effectively scavenges o2 metabolites in vitro, it is often unclear if scavenging of o2 metabolites is the mechanism by which dmtu decreases tissue injury in biological models. since dmtu not only scavenges o2 metabolites but is also consumed in a dose-response manner following reaction with hydrogen peroxide (h2o2) in vitro, we wondered whether dmtu would also be consumed by o2 metabolites in biological systems and if dmtu consumption would then reflect o2 met ... | 1985 | 3001019 |
| susceptibility to varicella-zoster virus among adults at high risk for exposure. | the adult health care provider who is susceptible to varicella zoster virus (vzv) represents a risk to her or himself and to patients. nineteen percent of employees at this children's hospital had no or uncertain prior experience with vzv, and of these, 28% were found to be vzv susceptible, representing 5% of the total population of 2,730 hospital employees. during the 12 months of study, six of the potential 135 to 137 vzv-susceptible individuals acquired varicella. vzv-susceptible health care ... | 1986 | 3019915 |
| susceptibility to varicella-zoster virus among adults at high risk for exposure. | the adult health care provider who is susceptible to varicella zoster virus (vzv) represents a risk to her or himself and to patients. nineteen percent of employees at this children's hospital had no or uncertain prior experience with vzv, and of these, 28% were found to be vzv susceptible, representing 5% of the total population of 2,730 hospital employees. during the 12 months of study, six of the potential 135 to 137 vzv-susceptible individuals acquired varicella. vzv-susceptible health care ... | 1986 | 3019915 |
| carbachol- and norepinephrine-stimulated phosphoinositide metabolism in rat brain: effect of chronic cholinesterase inhibition. | activation of cholinergic muscarinic receptors leads to several biochemical events including an increased turnover of phosphoinositides. in this study we have investigated whether repeated administration of the organophosphorus insecticide disulfoton, known to cause the development of tolerance to this compound, would affect phosphoinositide metabolism in rat brain. basal and carbachol-stimulated phosphoinositide metabolism were measured in cerebral cortex slices, by measuring the accumulation o ... | 1986 | 3020234 |
| carbachol- and norepinephrine-stimulated phosphoinositide metabolism in rat brain: effect of chronic cholinesterase inhibition. | activation of cholinergic muscarinic receptors leads to several biochemical events including an increased turnover of phosphoinositides. in this study we have investigated whether repeated administration of the organophosphorus insecticide disulfoton, known to cause the development of tolerance to this compound, would affect phosphoinositide metabolism in rat brain. basal and carbachol-stimulated phosphoinositide metabolism were measured in cerebral cortex slices, by measuring the accumulation o ... | 1986 | 3020234 |
| mapping of the class ii region of the human major histocompatibility complex by pulsed-field gel electrophoresis. | the class ii region of the human major histocompatibility complex (mhc) encodes a polymorphic set of cell surface glycoproteins involved in the regulation of the immune response. each glycoprotein is a heterodimer composed of a alpha-chain of relative molecular mass (mr) 34,000 (34 k) and a beta-chain of mr = 28k. the products of the class ii region have been characterized by the mixed lymphocyte reaction, serology, primed lymphocyte typing and dna cloning. dr, dq and dp, three subregions contai ... | 1986 | 3020430 |
| mapping of the class ii region of the human major histocompatibility complex by pulsed-field gel electrophoresis. | the class ii region of the human major histocompatibility complex (mhc) encodes a polymorphic set of cell surface glycoproteins involved in the regulation of the immune response. each glycoprotein is a heterodimer composed of a alpha-chain of relative molecular mass (mr) 34,000 (34 k) and a beta-chain of mr = 28k. the products of the class ii region have been characterized by the mixed lymphocyte reaction, serology, primed lymphocyte typing and dna cloning. dr, dq and dp, three subregions contai ... | 1986 | 3020430 |
| production of platelet-derived growth factor-like molecules by cultured arterial smooth muscle cells accompanies proliferation after arterial injury. | the migration and proliferation of smooth muscle cells (smcs) within the intima of arteries following mechanical injury is thought to be initiated by vessel wall injury and release of growth factors, in particular the platelet-derived growth factor (pdgf). however, the mechanism by which smc proliferation is regulated after platelet interaction with the vessel wall has ceased is unknown. here we show that smcs derived from the intima of injured rat arteries (intimal smcs) are phenotypically dist ... | 1986 | 3020543 |
| production of platelet-derived growth factor-like molecules by cultured arterial smooth muscle cells accompanies proliferation after arterial injury. | the migration and proliferation of smooth muscle cells (smcs) within the intima of arteries following mechanical injury is thought to be initiated by vessel wall injury and release of growth factors, in particular the platelet-derived growth factor (pdgf). however, the mechanism by which smc proliferation is regulated after platelet interaction with the vessel wall has ceased is unknown. here we show that smcs derived from the intima of injured rat arteries (intimal smcs) are phenotypically dist ... | 1986 | 3020543 |
| evidence that a human soluble beta-galactoside-binding lectin is encoded by a family of genes. | two cdna clones were isolated by immunoscreening a human hepatoma cdna library with an antiserum that bound specifically to a human soluble beta-galactoside-binding lectin with mr of approximately 14,000. the deduced amino acid sequences of the inserts of these two clones show considerable homology with each other, the sequence of chicken skin beta-galactoside-binding lectin, and eight peptides derived from purified human lung lectin of mr approximately 14,000. however, the sequence differences ... | 1986 | 3020551 |
| evidence that a human soluble beta-galactoside-binding lectin is encoded by a family of genes. | two cdna clones were isolated by immunoscreening a human hepatoma cdna library with an antiserum that bound specifically to a human soluble beta-galactoside-binding lectin with mr of approximately 14,000. the deduced amino acid sequences of the inserts of these two clones show considerable homology with each other, the sequence of chicken skin beta-galactoside-binding lectin, and eight peptides derived from purified human lung lectin of mr approximately 14,000. however, the sequence differences ... | 1986 | 3020551 |
| exposure of sheep to natural aerosols of foot-and-mouth disease virus. | sheep taken individually and allowed to inhale air being drawn along a duct from a cabinet containing pigs acutely infected with foot-and-mouth disease virus for 10 or 15 minute periods were infected by doses as low as 10 tcid50 of virus. the most consistent and reliable indicators of infection were viraemia and seroconversion. the mean times from exposure to onset of viraemia, pyrexia and the appearance of vesicular lesions were 2.5, 3.8 and 4.7 days, respectively. neither the time from exposur ... | 1986 | 3020658 |
| [structure and functions of cloned adenovirus dna]. | | 1986 | 3020801 |
| subtypes and functions of alpha-adrenoceptors. | | 1986 | 3020944 |
| thymidine kinase with altered substrate specificity of acyclovir resistant varicella-zoster virus. | the acyclovir resistant mutant of varicella-zoster virus acv-r (a 8) induced the same level of thymidine kinase activity in infected cells as the parent kawaguchi strain. however, it induced less deoxycytidine kinase activity and did not induce phosphorylating activity for the nucleotide analogue, 9-(2 hydroxy-ethoxymethyl)-guanine-(acyclovir). another acyclovir resistant mutant, acv-r (a 4), which is cross-resistant to phosphonoacetate and is thought to be a viral dna polymerase mutant, induced ... | 1986 | 3022711 |
| identification and characterization of mg2+-dependent phosphotyrosyl protein phosphatase from rat liver cytosol. | although highly purified preparations of mg2+-dependent phosphoseryl protein phosphatase (also designated phosphatase ia or phosphatase 2c) dephosphorylated phosphotyrosyl histone, the activity has been resolved from phosphatase ia by polyacrylamide gel electrophoresis at ph 9.5. this novel phosphotyrosyl-specific protein phosphatase absolutely requires mg2+ or mn2+ for activity, is inhibited by zn2+, vanadate and fluoride, and has an optimal ph of 9.0 and mr = 50,000. certain properties of this ... | 1986 | 3022716 |
| the chicken carbonic anhydrase ii gene: evidence for a recent shift in intron position. | the complete nucleotide sequence of the coding region of the chicken carbonic anhydrase ii (ca ii) gene has been determined from clones isolated from a chicken genomic library. the sequence of a nearly full length chicken ca ii cdna clone has also been obtained. the gene is approximately 17 kilobase pairs (kb) in size and codes for a protein that is comprised of 259 amino acid residues. the 5' flanking region contains consensus sequences commonly associated with eucaryotic genes transcribed by r ... | 1987 | 3029691 |
| role of postnatal gonadal function in the determination of thyrotropin (tsh) releasing hormone-induced tsh response in adult male and female rats. | permanent effects of postnatal gonadal function on the hypothalamo-pituitary-thyroid axis were examined in male and female rats of the wistar-imamichi strain. animals were used at the age of about 10 weeks. neonatally castrated (nc) males showed a significantly higher plasma tsh response to trh (10 micrograms/kg bw, ip) than males castrated at 1, 2, 3, 4, or 6 weeks of age. the tsh response in intact males was similar to that seen in nc males. neonatal androgenization of nc males with 100 microg ... | 1987 | 3032567 |
| effects of inhibitors of the cytoplasmic structures and functions on the early phase of infection of cultured cells with simian virus 40. | to obtain information about cytoplasmic structures and functions involving the entry of simian virus 40 virions into cells, we examined whether the inhibitors that affect the functions and/or structure of lysosomes, cell membrane, and cytoskeletons inhibit expression of nuclear t antigen in the sv40-inoculated rat 3y1 and monkey cv-1 cells. chloroquine, methylamine, and butylamine did not inhibit t-antigen expression, suggesting that lysosomal acidification is not required for establishment of i ... | 1987 | 3033894 |
| maturation antigen of the mouse sperm flagellum: ii. origin from holocrine cells of the distal caput epididymis. | during epididymal transit, the mouse sperm flagellum acquires a surface glycoprotein (sma4) from epididymal fluid that functions as a sperm antiagglutinin. to determine the origin of this molecule, testes and epididymides of male mice were sectioned for light microscopy and stained with wheat germ agglutinin (wga)-peroxidase, a probe that has been used previously to examine the biology of sma4. wga reactivity was localized to the cytoplasm in a small population of cells in the distal caput epidi ... | 1987 | 3034104 |
| calmodulin-mediated cadmium inhibition of phosphodiesterase activity, in vitro. | ion-stripped bovine brain calmodulin (cam) binds 4 moles cd2+ as well as 4 moles ca2+ per mole protein, with similar affinity; in the presence of 1 mm mg2+ the molar binding ratio of cam for ca2+ decreased to 3, the apparent k0.5 for ca2+ nearly doubled, but the binding characteristics of cam for cd2+ were not changed. saturating concentrations ca2+ did not affect the molar binding ratio of cam for cd2+, but increased the apparent k0.5 for cd2+; vice versa, saturating concentrations cd2+ decreas ... | 1987 | 3034196 |