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contribution to a knowledge of the morphogenesis of the nasal apparatus of the dromedary (camelus dromedarius) l.). 19873692382
induction of luteal activity and progesterone secretion in the nonpregnant one-humped camel (camelus dromedarius).corpora lutea (n = 20) were detected in 5 one-humped female camels studied during a period of 4 months. complete mating by a vasectomized male, male introduction into the pen of females without mating, or a progesterone decrease from a previous corpus luteum were followed by a similar progesterone pattern. a maximal plasma concentration of 4.5 +/- 1.5 ng progesterone/ml (2.7-8.8 ng/ml) occurred 8.55 +/- 1.32 days (6-11 days) after the inducing stimulus. luteal regression, beginning 8.65 +/- 1.18 ...19873598953
xylazine and ketamine anaesthesia in the dromedary camel under field conditions.the effects of either xylazine (0.25 mg/kg) intramuscularly, ketamine (5.5 mg/kg) intramuscularly, or a mixture of xylazine (0.15 mg/kg) and ketamine (2.5 mg/kg) intramuscularly on sedation, analgesia, cardiac and respiratory rates, body temperature and muscle relaxation were studied in the domesticated dromedary camel. either drug used separately was suitable for sedation and analgesia in the camel. however, the mixture of xylazine and ketamine was superior to either drug used alone. camels whi ...19873604017
the camel as a patient. 19873604024
levels of glycosylated haemoglobin in the arabian camel (camelus dromedarius).proportions of glycosylated haemoglobin (hb) were determined in 10 arabian camels (camelus dromedarius) and were compared with normal controls (n = 59) and diabetic patients (n = 47) using the thiobarbituric acid (tba) method. the level of glycosylated haemoglobin (5.5%) in camels is significantly different from that of normal healthy humans (4.9%) (p less than 0.001). whereas the glucose levels were comparable, this difference in percentages of glycosylated haemoglobin may be explained by the d ...19873568621
the prevalence and pathology of eimeria infections in camels in saudi arabia.three-hundred and eighty five saudi arabian camels were surveyed for eimeria infections and the pathology investigated. eimeria dromedarii, e. rajasthani and e. cameli were detected, e. dromedarii being the most prevalent and e. cameli the least. infections were more prevalent along the humid coastal areas than in the arid interior. all three parasites are pathogenic to young camel calves causing enteritis due to the destruction of intestinal mucosa by their giant schizonts. older camels are ooc ...19873611431
[hypotheses on the role of the prehistoric sahara in the spread of parasitic and hematologic diseases].15,000 years ago, the sahara was moist, inhabited by tropical fauna and travelled over by nomadic populations. later, the dryness incited human migrations to north or west africa. african bilharziasis (s. mansoni and s. haematobium) could have been carried by nomadic populations infected in the nile river. sickle cell disease and alpha-thalassemia are derived from saudi arabia (unless in the case of alpha-thalassemia there was an identical mutation in several regions). echinococcosis was brought ...19873301031
thyroid hormones, cholesterol and triglyceride levels in the camel.thyroxine, tri-iodothyronine, triglyceride and cholesterol were measured in the serum of clinically healthy male camels. thyroxine and tri-iodothyronine levels, which were assayed by an immunoabsorbent method, were not correlated with either age or cholesterol levels.19873616154
normal serum activities of some diagnostic enzymes in dromedary camel in sudan.76 adult camel (30 males and 46 females) sera were surveyed for the normal activities of alkaline phosphatase (alp), alanine aminotransferase (alt), aspartate aminotransferase (ast), creatine phospho-kinase (cpk), gamma-glutamyl transpeptidase (ggt) and lactate dehydrogenase (ldh). the values recorded for the above enzymes were compared to other data in the literature.19872888228
purification and characterization of camel liver glutathione s-transferase.glutathione s-transferases have been purified (18-fold) in 65-70% yield from the liver of one humped camel using affinity chromatography on glutathione-linked agarose. chromatofocusing technique resolves the glutathione s-transferases into seven distinct isoenzymes with apparent pi of 8.7, 8.4, 8.0, 7.8, 7.3 and 6.5. the major isoenzyme (pi 8.7) which accounted for over 95% of the total activity was composed of two identical subunits of molecular mass 24,000 and was immunologically similar to th ...19873106114
a rapid purification procedure for camel kidney glutathione s-transferase.glutathione s-transferase was isolated from supernatant of camel kidney homogenate centrifugation at 37,000 xg by glutathione agarose affinity chromatography. the enzyme preparation has a specific activity of 44 mumol/min/mg protein and recovery was more than 85% of the enzyme activity in the crude extract. glutathione agarose affinity chromatography resulted in a purification factor of about 49 and chromatofocusing resolved the purified enzyme into two major isoenzymes (pi 8.7 and 7.9) and two ...19873114733
purification and characterization of luteinizing hormone from the dromedary (camelus dromedarius).luteinizing hormone (lh) has been purified from 150 dromedary pituitaries and its partial physicochemical, biological and immunological characterization has been achieved. purification of the hormone was monitored by a porcine lh radioreceptor assay (rra). in this system, the final camlh preparation exhibited an activity 0.6-fold that of highly purified porcine lh. the acid half-dissociation of camlh at equilibrium was observed at ph 4.2. a homologous camlh rra was developed using the testicular ...19873120799
beta-endorphin. biological activity of analogs containing dermorphin and dynorphin sequences: ileum and vas deferens assays.biological activity of synthetic beta-endorphin (beta-ep) analogs containing dermorphin or dynorphin-a-(1-13) structure has been investigated using the guinea pig ileum and the vas deferens of the mouse, rat and rabbit. replacement of nh2-terminal 1-7 segment of camel beta-ep [beta c-ep-(1-7)] with dermorphin caused a great increase in opiate potency of the analog. [dermorphin (1-7)]-beta c-ep was 120 times more potent than beta c-ep in the guinea pig ileum assay, 49 times more potent in the mou ...19872883148
failure of trypanosoma (nannomonas) simiae to infect camels (camelus dromedarius). 19872884844
prevalence of antibodies to some viral pathogens, brucella abortus and toxoplasma gondii in serum from camels (camelus dromedarius) in sudan. 19872825450
trypanosomiasis in the camel (camelus dromedarius). 198732370333
bacterial disease of dromedaries and bacterian camels. 198732370336
the arabian race camel normal parameters--i. haemogram, enzymes and minerals.1. racing camels' (camelus dromedarius) normal blood parameters were determined in al-ain, u.a.e. the parameters were: packed cell volume, haemoglobin, total red and white blood cells, the activities of glutamate oxaloacetate (got), creatinine kinase (ck), gamma-glutamyl transferase (gamma-gt) and ck muscle-brain isoenzyme and the concentrations of creatinine, urea, total protein, albumin, calcium, magnesium, phosphorus, sodium, potassium, zinc, copper and iron. 2. most blood parameters were fou ...19882900118
effect of polyanions on the spectroscopic properties of the nitric oxide derivative of ferrous dromedary (camelus dromedarius) hemoglobin.the effect of inositol hexakisphosphate, 2,3-diphosphoglycerate, dextran sulphate, and heparin on the spectroscopic (absorbance, circular dichroism, epr) properties of the nitric oxide derivative of ferrous dromedary (camelus dromedarius) hemoglobin was investigated. the results obtained show that: (i) all polyanions bind to the protein at the same sites, but with different affinities; (ii) polyanions affect the protein conformation of the ferrous nitrosyl derivative in a different way with resp ...19882454290
[uncommon facial mutilation by camel bite]. 19882465727
a comprehensive biochemical analysis of the blood of the camel (camelus dromedarius).1. the blood of twenty camels has been analyzed and the levels of eight serum enzymes determined. 2. in addition, pk and g6pd activities in the erythrocytes were assayed. 3. a number of other serum constituents were also measured, including haemoglobin, bilirubin, uric acid, phosphorus, cholesterol, total lipids and glucose. 4. wherever possible, the values obtained were compared with data for the camel reported in the literature. 5. where no such values existed, comparisons with other ruminants ...19883356128
ultrastructure of the nephron of the one-humped camel, camelus dromedarius.the nephron of the one-humped camel camelus dromedarius was investigated by light and transmission electron microscopy. besides the many features common to other mammalian kidneys, the nephron of the camel is unique in having an unusually thick basal lamina underlying the epithelial cells of the nephron, the thickest being found in part of the parietal layer of bowman's capsule and the thin limb of the loop of henle. in the latter, the membrane usually appears lamellated and contains numerous ti ...19883221405
multiplicity of interactions between dromedary hemoglobin and solvent components. a structural and functional study.the interaction of dromedary hemoglobin with various solvent components [2-(p-chlorophenoxy)-2-methylpropionic acid (cfa), 2,3-bisphospho-d-glycerate (glycerate-2,3-p2) and chloride] has been studied. 1. cfa greatly lowers the oxygen affinity of dromedary hemoglobin. 2. the oxygen-linked cfa binding sites are probably located in the deoxy derivative at the alpha cleft, while in the oxy form and in the presence of two other effectors (glycerate-2,3-p2 and chloride) additional, structurally and po ...19883169019
purification and some properties of camel lens crystallins.five major crystallin fractions were found in camel lens fractionated by sepharose cl-6b column chromatography. these crystallin fractions were named alpha high (alpha h), alpha low (alpha l), beta high (beta h), beta low (beta l) and gamma (gamma) by comparison with the elution profiles and molecular weights of rabbit crystallins. the amino acid composition and isoelectric focusing bands for crystallins of camel and rabbit were remarkably similar, but individual differences were found. by means ...19883180836
heterogeneity of the histological features along the course of the facial vein of the desert camel (camelus dromedarius): relevance to brain cooling.sections from different parts along the facial vein of the camel (camelus dromedarius) were examined by light microscopy. the results demonstrated heterogeneity among the various segments. particular attention was paid to a specific area in the buccal region which was previously shown by physiological experiments to have a temperature-dependent myogenic tone. the morphology of that area showed highly thickened media with prominent bands of circularly disposed smooth muscles infiltrating both the ...19883270977
morphometric and histological studies on the adrenal glands of the camel camelus dromedarius.the adrenal gland of the camel consists of an outer cortex and an inner medulla. the general disposition of the cortex and medulla, however, differs occasionally from that of other mammals. extensions of medulla could reach as far as the periphery of the cortex. islet of medullary tissue may be found in sections of the cortex and cortical tissue consisting of all zones of the cortex may occur around arteries or nerves in the medulla. the medulla may be separated from the cortex by connective tis ...19883270979
purification and comparison of phosphoenolpyruvate carboxykinase from the liver and kidney of the arabian camel (camelus dromedarius).1. phosphoenolpyruvate carboxykinase was partially purified from camel liver and kidney by ammonium sulphate fractionation, gel filtration and ion-exchange chromatography. 2. the specific activity of the purified preparation from liver was 39.2 mumol/min per mg protein. 3. when isolated from the kidney the specific activity of the enzyme was very much higher 155.5 mumol/min per mg protein. 4. the enzyme from the two sources were similar in their ph optimum which was approx. 7.2 and their relativ ...19883356139
hydatidosis in camels in kuwait.infection of indigenous camels, camelus dromedarius, with hydatid cysts has been recorded for the first time in kuwait. from february 1982 to april 1983, 293 camels slaughtered for human consumption were examined. the overall rate of infection was 39.6%: 18.5% in animals less than 6 years old, and between 40.1% and 45.2% in older animals. the infection rate in females (44.9%) was significantly higher than in males (24.7%). females also showed higher susceptibility to infections in multiple organ ...19883362831
multiplicity of different stable quaternary conformations in ferric hemoglobin from camelus dromedarius. modulation by small anions.the effect of small anions in modulating polyphosphate-induced conformational changes in ferric dromedary hemoglobin (camelus dromedarius) was investigated. the results obtained indicate that: i) in solution, the simultaneous presence of polyphosphate and small anions is essential to obtain quaternary changes in the protein; ii) the charge, rather than the size or sterical configuration, mainly affects the quaternary structural equilibrium of the macromolecule; iii) three distinct, stable quater ...19883401330
the mesonephric corpuscle of dromedary camel as revealed by scanning electron microscopy. 19883414147
electron microscopic studies on the morphogenesis of the lingual gustatory papillae of camel (camelus dromedarius). ii. morphogenesis of the circumvallate papillae. 19883414148
ultrastructure of the sebaceous glands of the camel (camelus dromedarius).the sebaceous gland of the camel has been studied by light and electron microscopy. the gland is lobed but the lobes are not subdivided into lobules. the ultrastructure of the sebaceous gland of the camel is generally similar to that of other animals. it consists of cells at different stages of development and maturation. the cells which are programmed to produce lipid secretion are probably those which lose contact with the basal lamina. various forms of smooth endoplasmic reticulum are seen in ...19883417542
interaction of organic azides with purified camel glutathione s-transferase.a series of organic azides was synthesized and was tested as inhibitors of purified camel glutathione s-transferases. enzymes purified from camel liver, lung, and kidney were inhibited reversibly by these compounds in a concentration-dependent pattern. the liver glutathione s-transferase was more sensitive to inhibition by most of these compounds and the lung enzyme was the least affected. the most effective reversible inhibitors of the tested organic azides for the purified camel liver enzyme w ...19883377903
outbreak of camel contagious ecthyma in central somalia. 19883194979
electron microscopic studies on the thymus of the arabian camel (camelus dromedarius).the thymus of young camels contained 2 main cell types: lymphocytes and epithelial reticular cells (er). 3 types of er cells were observed and described. 2 types from these cells showed secretory activities, meanwhile, the third type had well developed tonofilaments. hassall's corpuscles were noted in the medulla and were composed of degenerative concentrically arranged er cells. the functional morphology of the above mentioned structures was discussed.19883207189
tonic pain time-dependently affects beta-endorphin-like immunoreactivity in the ventral periaqueductal gray matter of the rat brain.beta-endorphin-like immunoreactivity (b-ep-li) levels have been investigated in the ventral periaqueductal gray matter (vpag) of rats killed 30, 60 or 120 min after the subcutaneous injection of dilute formalin (0.08 ml, 5%) in one fore- or hindpaw, or comparable handling. b-ep-li was estimated by radioimmunoassay, using an anti-camel b-ep serum directed against the c-terminal portion of b-ep molecule. in both fore- and hindlimb groups vpag b-ep-li values were significantly increased 60 and 120 ...19882966314
the ionic content of parasitic cysts in man, camel and sheep in riyadh, saudi arabia. 19883373064
the occurrence of infectious diseases in mixed farming of domesticated wild herbivores and livestock in kenya. ii. bacterial diseases.the prevalence of antibodies to brucella spp., mycobacterium paratuberculosis and the mycoplasma spp. causing contagious bovine pleuropneumonia and contagious caprine pleuropneumonia was determined in various species of ruminants on a ranch in the semi-arid zone of southeastern kenya. antibody titers to brucella spp. were found in eland (taurotragus oryx), oryx (oryx beisa) and camels (camelus dromedarius). reactors were not found in buffalo (syncerus caffer), sheep (ovis aries) and goats (capra ...19883373635
scanning electron microscopic study of the lingual papillae of the one humped camel, camelus dromedarius.the dorsum of the camel tongue shows filiform, fungiform, circumvallate and special (wart-like) papillae. filiform papillae are conical in shape and show different heights and thicknesses at various levels. fungiform papillae are rounded and are surrounded by robust filiform papillae. they can also be observed on the tip of the ventral surface. they have taste pores on their surfaces. circumvallate papillae are encircled by a primary groove and an annular pad. their taste pores open into the gro ...19883253256
prevalence of toxoplasmosis in saudi arabian camels (camelus dromedarius).serum samples from 227 saudi arabian camels were examined for toxoplasma gondii antibodies by the indirect haemagglutination test, using a microtitre technique. agglutinations (greater than 2+) occurring at 1:64 dilution were considered positive. a total of 36 (16%) camels were serologically positive for toxoplasmosis, giving titres ranging between 1:64 and 1:8192. the prevalence was much higher in female compared to male camels and in adults compared to young individuals.19883388734
prenatal development of the renal corpuscle of dromedary camel as revealed by scanning electron microscopy. 19883388953
a survey of some drugs commonly used in the camel.specific recommendations for drug dosages for the camel are rare and doses for this species are usually extrapolated from those recommended for other species. the pharmacology and toxicity of drugs likely to be used in the camel needs to be further studied to ensure the efficacy and safety of these drugs in this species. most of the reported work is on the chemotherapeutic efficacy of a few drugs long in use in other species against trypanosomiasis, mange and gastrointestinal nematodes. areas of ...19883051653
purification of camel milk lysozyme and its lytic effect on escherichia coli and micrococcus lysodeikticus.1. camel milk lysozyme was purified using heparin-sepharose 4b, sephadex g-75 and hydroxyapatite chromatography. by this procedure lysozyme was separated from lactoferrin and a low molecular weight protein. 2. the lytic effect of camel milk lysozyme was assayed using escherichia coli and micrococcus lysodeikticus and its activity was compared with that of lysozyme from human milk and egg white. 3. the specific activity of camel milk lysozyme was found to be lower than that of lysozyme from human ...19883066579
the distribution of phosphofructokinase isoenzymes in the liver of camel, rat and rabbit.1. the distribution of phosphofructokinase isoenzymes have been compared among camel, rat and rabbit livers. 2. only a single phosphofructokinase isoenzyme is present in the camel liver which has shown different physical and regulatory properties from the isoenzymes of rat and rabbit liver. 3. the ammonium sulphate precipitation curves of the camel and rabbit enzymes were monophasic, whereas the rat enzyme was biphasic. 4. rabbit liver phosphofructokinase was slightly more anodic than the rat en ...19882965635
in vitro effect of protein-free diet on protein nitrogen production in ruminal fluid of egyptian camel. 19883190396
onchocerca armillata railliet and henry, 1909 and onchocerca gutturosa (neumann, 1910) in camels (camelus dromedarius l.) in the sudan.a study undertaken to determine the onchocerca species infecting camels that live in the same localities as cattle in the dinder region, blue nile province, sudan revealed concurrent infections with the bovine parasites onchocerca armillata in the thoracic aorta, brachiocephalic trunks and brachial arteries and onchocerca gutturosa in the ventral side of the lamellar parts of the ligamentum nuchae. the microfilariae of both species had the same predilection sites in the skin of the ears, head an ...19883222922
delta-aminolevulinic acid dehydratase activity in blood of egyptian camel and buffalo. 19883219029
cholinergic innervation of the tongue of the one humped camel, camelus dromedarius.distribution of adrenergic and cholinergic nerve profiles in the tongue of camel has been studied by histochemical methods. the tongue is richly innervated by cholinergic nerve profiles as is evidenced by the presence of numerous nerve fibres at different levels. there is noted strong cholinesterase positive reaction close to the lateral border of the circumvallate papillae (in the region of the taste buds) and the upper border of the fungiform papillae. numerous nerve fibres have been observed ...19883189839
oxygen binding properties, capillary densities and heart weights in high altitude camelids.the oxygen binding properties of the blood of the camelid species vicuna, llama, alpaca and dromedary camel were measured and evaluated with respect to interspecific differences. the highest blood oxygen affinity, not only among camelids but of all mammals investigated so far, was found in the vicuna (p50 = 17.6 torr compared to 20.3-21.6 torr in the other species). low hematocrits (23-34%) and small red blood cells (21-30 microns 3) are common features of all camelids, but the lowest values are ...19883220989
effects of maximal exercise on the blood composition of the racing camel.haematological and blood biochemical changes were studied in nine camels after maximal exercise over 4 or 5 km. there was a lack of splenic reserve for red blood cells, indicated by a minimal increase in haemoglobin concentration and haematocrit. there were marked increases in plasma lactate (to over 20 mmol/litre), plasma ammonia and plasma glucose and a pronounced decrease in circulating free fatty acids. there were small but significant increases in plasma calcium, magnesium, sodium, potassiu ...19883195011
scanning electron and light microscopic studies on the development of the oral mucosa of camel (camelus dromedarius). 19883195184
ultrastructure of the adrenal cortex of the one-humped camel (camelus dromedarius). 19883195188
the relationship between ultrastructure and function of formed elements in camel blood. 2. the lymphocytes. 19883195191
plasma concentrations of progesterone, oestrogens, testosterone and lh-like activity during the oestrous cycle of the camel (camelus dromedarius).peripheral plasma concentrations of progesterone, total oestrogens and testosterone (measured by rias) and lh (monitored by the mouse leydig cell bio-assay) were measured in 8 female camels for a complete oestrous cycle (23.1 +/- 1.2 days). the absence of an lh surge and a low concentration of progesterone (less than 1 ng/ml) during oestrus (5 days) and throughout the cycle indicated a failure of spontaneous ovulation and absence of a subsequent luteal phase in this species. high concentrations ...19883411553
a study of the genital organs of the female dromedary (camelus dromedarius).camels (416 pregnant, 118 non-involuted post partum and 730 non-pregnant) were examined post mortem. large follicles (greater than 10 mm), small follicles (5-10 mm) and non-functional ovaries were observed in 144 (20.7%), 127 (18.3%) and 424 (61.0%) respectively out of 695 normal non-pregnant organs. season did not exert any significant influence on the frequency of these groups. recently formed and regressing cl after sterile mating were occasionally seen. corpora albicantia (3-15 mm) were the ...19883361493
dependence of o2 transfer conductance of red blood cells on cellular dimensions.to estimate the significance of the dimensions of rbc on o2 transfer, the kinetics of o2 release from rbc into medium containing dithionite (40 mmol/l) was measured, by a stopped-flow technique, for nine different species with varying rbc size (man, llama, vicuna, alpaca, dromedary camel, pygmy goat, domestic hen, muscovy duck and turtle). the observed o2 transfer kinetics were found to be size-dependent, i.e. the o2 transfer conductance of the single rbc, gst, was lower, whereas the specific o2 ...19883364283
clinical and anatomical studies of the camel (camelus dromedarius) genitalia.clinical and anatomical studies of the genitalia of 294 camel (197 males and 97 females) were carried out between may 1984 and october 1985. preslaughter (clinical) examination was followed by detailed post-mortem (anatomical) examination and dissection of genitalia at the abattoir. measurements and weights of the various segments of genitalia were made to establish the baseline data for breeding soundness evaluation in the dromedary in northern nigeria.198816726545
circulating concentrations of thyroid hormones in pregnant camels (camelus dromedarius ).blood samples from 16 female camels were collected at monthly intervals commencing from 60 d post. breeding until the last month of gestation. two camels failed to conceive and two had unnoticed abortions. the average gestation period was 398+/-13 and 372+/-11 in camels bearing male and female fetus, respectively, with an overall mean of 383+/-9 d. sera were analyzed for thyroxine (t(4)) and triiodothyronine (t(3)) by radioimmunoassay. mean t(4) and t(3) concentrations varied from 76 to 116 ng/m ...198916726643
the fine structure of the epithelial lining of the epididymis of the camel (camelus dromedarius) with special reference to regional differences. 198917103615
the desert camel as a meat animal.fifty-two mature, fattened male camels were used for determining live animal and carcase measurements, carcase yield and characteristics. the average slaughter weight of mature, fattened desert camels was 456 kg, while the mean empty body weight was 404·8 kg. the camel carcase dressed out as 55·8% and 63·6% of live and empty body weight, respectively. the mean carcase composition was 56% meat,19% bone and 13·7% fat. of the body components of the camel, the head, hide and liver represented 3·5, 8 ...198922055021
dermoid cysts in camels.in our experience the camel (camelus dromedarius) seems to be affected more commonly by dermoid cysts as compared to other cutaneous cysts. however, apart from one reference (monteverde, 1935), the dermoid cyst has not been reported in the camel. this report documents dermoid cysts in identical locations in 11 camels with two camels having bilateral dermoid cysts at the similar site.19892920282
lens aldo-keto reductase of camelus dromedarius: purification and properties.aldo-keto reductase has been purified 13,000-fold from the lens of the camel (camelus dromedarius) to a specific activity of 85 u/mg protein. the enzyme is a monomeric protein, exhibiting a mr = 40,000 upon polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulphate. camel lens aldo-keto reductase shows a broad substrate specificity, which is strictly dependent on nadph, and is insensitive to inhibition by sorbinil and valproate. aldoses with a carbon chain with more than four ...19892679888
concentrations of volatile fatty acids and acetate production rates in the forestomachs of grazing camels.1. concentration profiles of volatile fatty acids (vfa), fluid volumes and turnover rates, and acetate production rates were measured in two different seasons in the forestomachs of four fistulated dromedary camels grazing in the kenyan thornbush savannah. 2. vfa profiles and average concentrations were similar under both feeding conditions but, due to a smaller fluid turnover, vfa outflow to lower gastric sections in the dry season was reduced by almost 50%. 3. the mean acetate production rate ...19892776433
camel trypanosomiasis and its vectors in somalia.blood samples from 3000 somali camels (camelus dromedarius) were examined for trypanosome infection. of these, 160 (5.33%) were infected with trypanosoma evansi, one (0.03%) with t. congolense and one (0.03%) with t. brucei. camel trypanosomiasis occurred in most areas of tabanid infestation throughout the country. the tabanids philoliche zonata and p. magretti are incriminated as the major vectors of the disease.19892781715
comparative pharmacokinetics of netobimin and albendazole in the one-humped camel (camelus dromedarius).netobimin and albendazole were administered orally to camels (n = 5 + 5) at molecular equivalent dosages, 15.8 and 10.0 mg/kg body wt, respectively. the plasma profiles of the two main metabolites were investigated for 54 h by high performance liquid chromatography. the metabolism and the disposition of both anthelmintics in camels were similar to sheep rather than to cattle. these results indicate that netobimin and albendazole are likely to be excellent anthelmintics for camels.19892790441
ag-nor staining and in situ hybridization of rdna in the chromosomes of the south american camelids.the location and frequency of ag-stained nors and sites of rdna hybridization were studied in the chromosomes of the south american camelids. in the four camelids these regions occur distally on chromosomes 18, 21, and 27 and the smallest biarmed elements. quantitative analysis of nor distribution showed variations between both cells and species. in llama, guanaco and alpaca the nors number averaged 6 per cell, this being higher than in vicuña where the average was 3. relative frequencies of nor ...19892482825
a comparative study of enzyme profile of camel (camelus dromedarius) hump and sheep (ovis aries) tail tissues.1. the activities of phosphoenolpyruvate carboxykinase, malic enzyme, nad+ and nadp+ isocitrate isocitrate dehydrogenase, glucose-6-phosphate dehydrogenase, lactate dehydrogenase and pyruvate kinase were assayed in homogenate of camel hump and sheep tail tissues. 2. in addition the levels of glucose, cholesterol, total protein and total lipids in these tissues were measured. 3. results obtained were utilized to compare the state of metabolism of adipose tissue of camel hump to that of sheep tail ...19892805643
the elliptocyte: a study of the relationship between cell shape and membrane structure using the camelid erythrocyte as a model.1. the elliptocytic shape of the camelid erythrocyte is very stable and has a high resistance to modification by drugs and treatment which alter the shape of the discocytic erythrocytes of scimitar-horned oryx and man. 2. differences in the erythrocyte membrane proteins have been found which indicate that proteins play an important role in stabilisation of the camelid elliptocyte. 3. the organisation of the cytoskeletal network in camelid elliptocytes differs from that established for human disc ...19892605918
[presence of epithelial crypts in the chamois (rupicapra rupicapra l.) epididymis. preliminary note].the authors refer the presence of epithelial crypts in the epididymis of chamois, previously described only in the bull by nicander, in the camel by singh, in the cat by arrighi and in the roe-buck by gentile et al. these crypts consist of cavities bored into the epithelium lining the epididymis and are rounded by the epithelial cells which are, sometimes, squamous and thin. some crypts open into the lumen of the epididymis, some others crypt are filled with floccular, gelatinous material and, a ...19892611017
n-terminal amino-sequencing of camel (camelus dromedarius) luteinizing-hormone alpha and beta-subunits.the subunits of luteinizing hormone from the camelus dromedarius (camlh) have been separated by reverse phase hplc after reduction and alkylation of their disulfide bridges. the n-terminal amino-acid sequencing of the alpha and beta subunits has been performed up to the 53rd and 67th residue respectively (i.e. more than half of each polypeptide chain). these sequences have been compared to those of lh from other mammalian species in order to estimate the phylogenetic divergence of lh in this spe ...19892483583
nadph-dependent reduction of glyceraldehyde: a unusually high activity in the lens of the camel (camelus dromedarius).the enzymes of the polyol pathway, namely aldose reductase and sorbitol dehydrogenase, were measured in camel lens extracts. a nadph-dependent glyceraldehyde and erythrose reductase activity 25 times higher than that of calf lens was observed in camel lens. a preliminary comparison between this enzyme activity present in the camel and aldose reductase of calf lens is reported.19892504255
camel bites: report of severe osteolysis as late bone complications.four cases of severe osteolysis of bones subsequent to camel bite are described. the first had osteolysis of the ribs with traumatic diaphragmatic hernia. two cases had similar appearances of gross osteolysis of the shafts of the radius and ulna, whilst one had osteolysis of the humeral shaft. the similarities in the radiological appearances especially of the gross osteolysis at the site of trauma are noted. the complications following mammal bites are discussed.19892616430
efficacy of rm110, a novel trypanocide, in the treatment of trypanosoma evansi infections in camels.camels artificially infected with a field stock of trypanosoma evansi isolated from a camel near gewane, ethiopia were cured by treatment with rm110, administered by subcutaneous injection at 0.3 or 0.6 mg/kg body weight. local reactions were mild and transient. further evaluation of rm110 is indicated, in particular the determination of minimum curative doses for this and other t. evansi stocks in camels.19892617676
liver function and protein binding in camels.1. dehydration of camels for 10 days resulted in reduction of liver functions, expressed in longer half life and reduced clearance of bromosulfophthalein (bsp), elevated ast (alt levels were below the limit of detection of the method) and reduced serum albumin concentrations. 2. binding of bsp to camel serum proteins by gel permeation chromatography and by equilibrium dialysis showed very strong binding. 3. binding parameters of various drugs to camels serum by equilibrium dialysis showed close ...19892573454
corynebacterium pseudotuberculosis infection in camels (camelus dromedarius) in saudi arabia. 19892617677
influence of globin structure on the heme in dromedary carbonmonoxyhemoglobin.by use of x-ray absorption near-edge structure (xanes), circular dichroism, and visible absorption spectroscopies, dromedary carbonmonoxyhemoglobin has been characterized structurally and functionally. by consideration of the experimental results the following view emerges: (i) the quaternary structure is not the unique factor determining the tertiary environment around the heme, and (ii) the multiplicity of interactions between hemoglobin and solvent components induces a large number of globin ...19892605205
[haemonchosis in camels].over the last thirty years, several surveys referring to the gastrointestinal parasites in the dromedary have shown high infestation rates by haemonchus longistipes. certain other studies have pointed out the economic and clinical importance of the camel haemonchosis. the author presents an overview of established knowledge on this major disease for the dromedary, which has hitherto been underestimated. the known features belonging either to this species or inferred from sheep haemonchosis, as a ...19892662272
polymorphic plasma postalbumin (po) of llamas and alpacas identified as gc protein.immunoblotting with antiserum specific to human gc protein was used to identify gc protein as the previously reported polymorphic plasma postalbumin (po) of llamas and alpacas. this is the first report of gc polymorphism in camelid species. one gc variant appeared to be identical in llamas, alpacas, dromedaries and bactrian camels.19892474262
[camels. origin--use--types].this survey study reports on origin and use of camels and on the various asian and african races, indian camels being specially mentioned. the differences of camels for riding and for packing are stressed compared as e.g. with horses in the western world for working and for racing. it is further pointed out that in arid and semi arid areas the camel has been, and will be in the foreseeable future, not replaceable as an animal for working and transporting goods.19892673728
camel brain glutathione s-transferase purification, properties, regional and subcellular distribution.1. camel brain glutathione s-transferase was purified by glutathione-linked agarose affinity column and the different isozymes were separated by chromatofocusing. 2. the basic isozymes which comprise 45% of the total activity were immunologically indistinguishable from the near-neutral isozymes which constitute 55% of the activity. 3. some differences were detectable among the basic and near-neutral isozymes in relation to substrate specificities and subunit composition. 4. biochemical and immun ...19892505965
silicate pneumoconiosis in camels (camelus dromedarius l.).in a random screening of camel diseases in somalia dust-laden macrophages in lungs and/or bronchial lymph nodes were discovered in 94 of 134 animals. in 44 cases the dust-laden macrophages occurred in a number of small or large aggregates. there was a significant positive correlation between dust-laden macrophage aggregates in the lungs and pulmonary fibrosis not related to other chronic lung diseases, such as echinococcosis and chronic pneumonia. six cases showed a cellular reaction and hyalini ...19892515689
isolation of brucella abortus from experimentally infected dromedary camels in sudan: a preliminary report.six camels were experimentally infected with two strains of brucella abortus, four with s19 and two with a field bovine strain. in all cases antibody titres were detected within 6 to 11 days. serum agglutination titres peaked between days 11 and 32 and complement fixation titres between days 11 and 52; both titres then declined steadily. no clinical signs were observed in the four camels inoculated with s19. slight non-specific symptoms were seen in the two camels infected with the field bovine ...19892517155
sarcocystis in somali camel.samples of heart, esophagus and diaphragm of 200 camels (camelus dromedarius) from southern somalia were examined for sarcocystis by trypsin digestion and histological examination. the results showed a very high prevalence rate (82.5%). histological findings suggested the presence of two different species in the camel.19892518627
the opioid specificity of beta-endorphin enhancement of murine lymphocyte proliferation.beta-endorphin (beta-end) is a potent analgesic peptide which exhibits a variety of pharmacological activities in the central nervous system (cns) following binding of its n-terminus to specific opioid receptors. although c-terminal binding sites for this 31-amino-acid peptide have been characterized in cns tissue, identification of their possible function has been facilitated by studies of beta-end effects on lymphocyte activities. in this communication, we report a detailed analysis of the opi ...19892540118
observations on the suitability and importance of the domestic intermediate hosts of echinococcus granulosus in uttah pradesh, india.the present study investigated the suitability and importance of buffaloes, camels, sheep, goats and pigs in maintaining the life-cycle of echinococcus granulosus in aligarh, india. a total of 565 (36%) of 1556 buffaloes, 20 (2%) of 1208 goats, 5 (1%) of 559 pigs, 6 (6%) of 109 sheep and two of three camels were found to harbour hydatid cysts. the frequency distribution of the hydatid cysts in each intermediate host species was over-dispersed and in buffaloes cyst fertility increased with increa ...19892723385
rupture of the gastrocnemius muscle in a camel. 19892736387
[properties of an orthopoxvirus strain isolated from camels in niger].the vd47 viral strain, isolated from camels (camelus dromedarius) in niger possesses camelpoxvirus morphology and characteristic properties: heat sensitive, ether resistant, chloroform and idu sensitive, with ceiling-temperature 38.5 degrees c. it induces formation of syncytial and retracted cell foci with hemadsorption test positive. no pathogen for mice and very mildly for rabbits, this virus is neutralizable by anti-vaccine serum. the question of camelpoxvirus and camelparapoxvirus pathogenic ...19892544962
observations on sudanese camel nasal myiasis caused by the larvae of cephalopina titillator.forty-four camels slaughtered at nyala abattoir, western sudan, were examined for infection with the larvae of cephalopina titillator. the infection rate was found to be 100 p. 100. the parasitic burden ranged between 8-243 per animal. they were recovered throughout the year. the first stage larvae were noticed from december to may, indicating the breeding season of the fly. the larvae were found to cause visible pathological lesions on the nasopharynx. these were also demonstrated histopatholog ...19892740563
myiasis caused by wohlfahrtia magnifica (schiner, 1862) in the arabian camel (camelus dromedarius) in the peninsula of sinai.massive myiasis caused by wohlfahrtia magnifica (schiner, 1862) in camels in the southern mountainous zone of the peninsula of sinai is described. wohlfahrtiosis seemed intimately related to the climatic and ecological conditions of the area, particularly altitude, precipitation, pasture, rodents and ticks. the clinical features resembled those described in sheep in israel and in camels elsewhere. treatment with diazinon and synergized pyrethrum in pine oil proved effective.19892740564
indirect haemagglutination (iha) and immunoelectrophoresis in the diagnosis of hydatidosis in sudanese camels.the efficiency of indirect haemagglutination (iha) and immunoelectrophoresis (iep) as means of detection of cystic hydatid infection in camels was investigated. both iha and iep showed very low detection rates of antibody in camel sera. the iep showed 84 p. 100 specificity and 36 p. 100 sensitivity while the iha showed 69 p. 100 specificity and 43 p. 100 sensitivity. these results are discussed.19892740565
serum cortisol levels in camels (camelus dromedarius) during the reproductive cycle.1. cortisol concentrations were measured in sexually mature female camels (n = 18), two newborn camels and one adult male. 2. the study revealed a significant difference in the amounts of cortisol in pluriparous mated camels (n = 7) during the breeding season before (8.0 +/- 1.3 ng/ml) and immediately after mating, 45.0 +/- 11.9 ng/ml (p less than 0.01). 3. at the start of parturition (n = 7), the maternal serum cortisol level rose suddenly from the basal value, 11.4 +/- 1.3 ng/ml, 3 days pre pa ...19892575963
two simple antigen-detection enzyme immunoassays for the diagnosis of trypanosoma evansi infections in the dromedary camel (camelus dromedarius).a monoclonal antibody against a plasma membrane antigen of trypanosoma rhodesiense was used in a microplate- and a tube-elisa for the detection of t. evansi circulating antigen in camel sera from endemic areas in mali and kenya. the colour reactions could be read visually and the results obtained for both assays were identical. the sera from the control herd of 30 camels from a farm in a non-endemic area in kenya were all negative for antigen, while 18 out of 20 sera from infected camels in an e ...19892623422
accidental contamination of the public water supply at lowermoor, camelford: an assessment of the possible veterinary consequences.as a result of the delivery of 20 tons of concentrated aluminum sulphate solution into the wrong part of the lowermoor water treatment works the water supplies of 20,000 people and many thousands of cows, sheep, pigs and poultry became contaminated with aluminium, copper, zinc and lead. when the water mains were flushed into the rivers allen and camel many fish were killed by the high concentrations of aluminium. however, there appear to have been no detrimental effects on farm live-stock; this ...19892750028
bacterial infertility in camels (camelus dromedarius): isolation of campylobacter fetus.this study constitutes the first reported isolation of c. fetus subsp. venerealis from cervical swabs in breeding camels. 9 of 30 camels which were barren for a long period were found to be positive for c. fetus. the methods of isolation are described. additionally, cervical flora of 30 camels were examined. 9 different bacterial species were isolated of which staphylococcus aureus was most frequently found. all samples were negative for trichomonas sp. and streptococcus zooepidemicus.19892598805
transfer factor in smokers and non-smokers after smoking two cigarettes.impairments of lung functionality as long-term effects of cigarette smoking have been well established. to our knowledge, no study on acute recovery patterns in any important lung function index after smoking a very limited number of cigarettes has ever been reported. the present study reports recovery patterns of lung transfer factor (tf) and related parameters in smokers and non-smokers who smoked two camel cigarettes. lung transfer factor and other indices were determined by the single breath ...19892626109
echinococcus granulosus of camel origin: development in dogs and parasite morphology.the developmental characteristics of echinococcus granulosus of camel origin were studied in four dogs artificially infected with protoscolices originating from hydatid cysts isolated from the lung of a camel (camelus dromedarius). two dogs each were necropsied 34/35 and 41 days post-infection (p.i.); one dog had a low worm burden and the others were heavily infected (27,625-41,150 worms). at day 35 p.i., 20% of the parasites had developed three segments and the uterus of the vast majority of th ...19892771921
characterization of trypanosoma (trypanozoon) evansi from dromedary camels in kuwait by isoenzyme electrophoresis.blood from 115 camels in kuwait was examined for blood parasites. two camels of a local herd (1.7%) were found to be infected with trypanosoma (trypanozoon) evansi and three camels (2.6%) with microfilarial nematodes. the trypanosoma stocks isolated from these two camels were screened for isoenzyme patterns of 10 enzymes using thin-layer starch-gel electrophoresis. the results revealed that these two stocks were identical to camel stocks of t. evansi from certain countries in africa, as well as ...19892773274
structure of the carotid sinus of the dromedary camel (camelus dromedarius).the morphology of the terminal segment of the common carotid artery of the camel was studied. it was found that this artery terminated by giving off a patent internal carotid artery and continuing as the external carotid artery. a presumptive carotid sinus was present at the region of origin of the internal carotid. similar to that of other mammals, the carotid sinus of the camel was characterized by a comparatively thin vascular wall rich in elastic fibres. with the electron microscope, free (n ...19892624323
the tobacco epidemic: lessons from history.tobacco has caused the greatest epidemic of the twentieth century, which is beginning to wane in the united states, but is still growing in much of the world. the epidemic developed as a result of innovations in the tobacco industry and larger cultural changes over the 75 years prior to the introduction of camel cigarettes in 1913. factors that set the stage for the epidemic include the development of flue-cured and burley tobaccos, the mechanization of cigarette production with its consequent c ...19892681629
effect of blood meal and mating on the genital tract ultrastructure in the female camel tick hyalomma (hyalomma) dromedarii (ixodoidea: ixodidae).the genital tract ultrastructure in the female hyalomma (hyalomma) dromedarii is described during feeding and mating and up to oviposition. the vagina, consisting of vestibular (vv) and cervical (cv) regions, is formed of an epithelium lined internally with a folded cuticular layer and surrounded externally by muscle layers. these facilitate the passage of endospermatophores containing sperm into the receptaculum seminis (rs), and ova to the exterior. a pair of tubular accessory glands (ag) open ...19892707112
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