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emerging protozoal pathogens in india: how prepared are we to face the threat?emerging protozoal pathogens have become a major threat to human health. the number of protozoal pathogens causing human disease has been on the rise since the last two to three decades. significant increase in the number of immunocompromised people, increase in international travel, deforestation, and widespread urban dwellings are some of the factors contributing to this changing epidemiology of protozoal diseases. apart from naegleria and acanthamoeba, other free-living amoebae like balamuthi ...023508066
the transmission of trypanosoma lewisi by the rat-flea (ceratophyllus fasciatus). 191120765658
on the occurrence of an intracellular stage in the development of trypanosoma lewisi in the rat-flea. 191120765763
the mechanism of transmission of trypanosoma lewisi from rat to rat by the rat flea. 191120765607
a note on the pathogenicity of trypanosoma lewisi.1. some strains of trypanosoma lewisi may, at times, produce rapidly fatal infections in a large percentage of the rats infected. 2. in such strains of trypanosoma lewisi, a sufficient degree of pathogenicity may persist to warrant the designation of these strains as pathogenic. 3. the pathogenicity of a given strain of trypanosoma lewisi is not constant, but is subject to marked and even sudden variations.191419867780
morphological and developmental anomalies of a pathogenic strain of trypanosoma lewisi and their relation to its virulence.1. the morphological and developmental anomalies of a pathogenic strain of trypanosoma lewisi have been described to show the unusual character of the strain. 2. especial attention is called to the spontaneous occurrence of ablepharoplastic forms of trypanosoma lewisi. 3. it is pointed out that morphological anomalies were most pronounced in infections that showed unusual conditions of multiplication, and that such infections usually proved severe. 4. finally, an appreciable correlation between ...191419867793
concerning changes in the biological properties of trypanosoma lewisi produced by experimental means, with especial reference to virulence.1. different strains of trypanosoma lewisi represent different states of biological balance, especially between the powers of propagation and resistance to destruction. 2. the biological status of a given strain of trypanosoma lewisi is subject to cyclic variations as the result of immunological reactions in the blood of the host. 3. the factors limiting reproduction and causing destruction of trypanosoma lewisi in the blood are appreciably independent of each other. it is possible, therefore, t ...191519867877
trypanosoma lewisi in boston rats. 192119972551
variation and inheritance in size in trypanosoma lewisi: 1. life-cycle in the rat and a study of size and variation in "pure line" infections. 192116586822
variation and inheritance in size in trypanosoma lewisi: ii. the effects of growing "pure lines" in different vertebrate and invertebrate hosts and a study of size and variation in infections occurring in nature. 192116586829
a study of the interaction of host and parasite: a reaction product in infections with trypanosoma lewisi which inhibits the reproduction of the trypanosomes. 192416576770
a reaction product in infections with trypanosoma lewisi which inhibits the reproduction of the trypanosomes.1. in infections with trypanosoma lewisi in the rat there are three manifestations of resistance against the parasite: (1) the retardation and final inhibition of reproduction of the trypanosomes by about the 10th day; (2) a sudden drop in the number of parasites in the blood between the 9th and 15th days; and (3) the total disappearance of the parasites, which terminates the infection and occurs from a week to several months after the first drop in numbers. 2. the first manifestation of resista ...192419868831
studies on bartonella muris anemia of albino rats : i. trypanosoma lewisi infection in normal albino rats associated with bartonella muris anemia ii. latent infection in adult normal rats.1. the virus of bartonella muris anemia of splenectomized rats may be transmitted to normal young unoperated rats and rabbits. this confirms the observations of ford and eliot. 2. trypanosoma lewisi infections in normal adult rats are accompanied by an anemia most marked at the height of the infection and the appearance of bartonella muris bodies in the red blood cells. 3. in young rats trypanosoma lewisi may produce death from the severity of the anemia, complicating the disease. the anemic vir ...193019869745
immunological studies in relation to the suprarenal gland : vi a. trypanosoma lewisi infection in normal albino rats vi b. trypanosoma lewisi infection in suprarenalectomized adult albino rats.bilateral suprarenalectomy in rats lowers the resistance to a subsequent infection with t. lewisi. almost 70 per cent of these rats die within an average period of 5.8 days after infection. the multiplication of the parasites in the circulating stream is not more considerable than in rats previously normal nor is the duration of the disease in the surviving rats any longer than in the normal group. bilateral suprarenalectomy does not prevent the formation of immune substances to the parasites bu ...193019869790
a comparison of the chemical alterations in the blood of rats infected with pathogenic and non-pathogenic trypanosomes.blood samples from rats infected with trypanosoma lewisi give normal values for lipoid phosphorus, lecithin, co(2) combining capacity, and liver glycogen. when these results are compared with the results of similar experiments with t. equiperdum infections, on the basis of the concentration of trypanosomes in the blood, it is found that the pathogenicity of the latter organism does not depend upon its numbers as affecting the blood, but that it must be in some other way injurious to the host. wh ...193019869797
artificial acidosis in trypanosoma lewisi infections, and its bearing on the pathogenic action of trypanosoma equiperdum.when the alkali reserve is artificially lowered in rats infected with trypanosoma lewisi, the number of parasites in the blood is increased. the increase is large in the early stages of the disease, and becomes less marked as the number crisis is approached. near the crisis, and after it, a lowered alkali reserve does not affect the number of trypanosomes. it has been shown that the observed increase does not result from a contraction of the capillaries of the inner organs, which would throw a l ...193119869949
rapid and sterilizing effect of penicillin sodium in experimental relapsing fever infections and its ineffectiveness in the treatment of trypanosomiasis (trypanosoma lewisi) and toxoplasmosis. 194417844553
studies in trypanosomiasis; the serum potassium levels of rats during infection with trypanosoma lewisi, trypanosoma brucei, and trypanosoma equiperdum. 194620996736
studies in trypanosomiasis; the fragility of the erythrocytes in rats during the course of infection with trypanosoma lewisi, trypanosoma brucei and trypanosoma equiperdum. 194620996738
effect of age of infection upon the oxidative metabolism of trypanosoma lewisi. 194717794150
the influence of biotin deficiency on the course of infection with trypanosoma lewisi in the albino rat. 194718895742
adult multiplication in trypanosoma lewisi. 194718935409
the effect of pantothenate deficiency on trypanosoma lewisi infection in the rat. 194720250908
prolongment of the reproductive phase of trypanosoma lewisi by the administration of sodium salicylate. 194720265536
the antigenic composition and the effect of various extracts of trypanosoma equiperdum and trypanosoma lewisi on the leucocyte picture in experimental trypanosomiasis. 194720292036
resumption of the reproductive phase of trypanosoma lewisi in recovered and near recovered rats following both reinoculation with the parasite and treatment with sodium salicylate. 194720340871
liver changes in pantothenate-deficient rats infected with trypanosoma lewisi. 194818898002
the oxidative metabolism of trypanosoma lewisi in a phosphate-saline medium. 194818869805
changes in the glucose metabolism of trypanosoma lewisi during the course of infection in the rat. 194818869806
course of trypanosoma lewisi infections in white rats treated with sodium salicylate. 194918111990
on the reciprocal interference between the growth of yoshida sarcoma and that of trypanosoma lewisi. 195014802575
[incidence of trypanosoma lewisi, sarcocystis muris, species of spirochaeta, and larvae of microfilaria in the rats of panama city and its suburbs]. 195114858447
antagonism of spirillum minus infection in rats towards trypanosoma lewisi and t. equinum. 195114863953
studies on the metabolism of the protozoa. i. metabolism of the parasitic flagellate, trypanosoma lewisi. 195114886348
concerning salicylate inhibition of ablastic activity in trypanosoma lewisi infection. 195114908771
incidence of trypanosoma lewisi and hepatozoon muris in the norway rat. 195212981595
effect of sodium salicylate treatment on antibody titers in rats infected with trypanosoma lewisi. 195313120947
the oxidative metabolism of trypanosoma lewisi from salicylate treated infected white rats. 195413202012
observations on trypanosoma lewisi and grahamella sp. in the blood of rats from the hamakua district, island of hawaii. 195413202016
the effect of salicylate treatment on plasma proteins in rats infected with trypanosoma lewisi. 195613305593
effects of hypoxia on rats infected by trypanosoma lewisi. 195613319771
immunization against trypanosoma lewisi in rats by injections of metabolic products. 195713401232
the ingestion of particulate fat from the blood by trypanosoma lewisi and trypanosoma equiperdum. 195713504862
some considerations relative to the nature of immunity in trypanosoma lewisi infections. 195813539705
the oxygen uptake of trypanosoma lewisi and trypanosoma equiperdum, with especial reference to oxygen consumption in the presence of amino-acids. 195813566862
growth of trypanosoma lewisi in the heterologous mouse host. 195813501231
the effect of some metabolic inhibitors on the oxygen uptake of trypanosoma lewisi and trypanosoma equiperdium. 195813566863
electrophoretic and ultracentrifugal studies of antibodies to trypanosoma lewisi. 195913665055
observations on changes in trypanosoma lewisi after growth in calorically restricted and in normal mice. 195914417031
a study of cytoplasmic inclusions in trypanosoma lewisi and their relationship to the formation of antibody. 195914429094
the inhibition of nucleic acid and protein synthesis in trypanosoma lewisi by the antibody ablastin. 196016590665
in vitro phagocytosis of trypanosoma lewisi by rat exudative cells. 196013758793
serial passage of trypanosoma lewisi in the heterologous mouse host. ii. developmental history during transfer in adequately-fed hosts. 196013762224
quantitative studies on heterologous sera inducing development of trypanosoma lewisi in mice. 196113762223
effect of salicylates and related compounds on ablastic response in rats infected with trypanosoma lewisi. i. isomers of salicylic acid. 196113688445
effect of cortisone and x-irradiation on the course of trypanosoma lewisi infection in the rat. 196113713517
effect of salicylates and related compounds on ablastic response in rats infected with trypanosoma lewisi. ii. dihydroxybenzoic acids; antagonisms. 196113866324
in vitro studies of ablastin, the reproduction-inhibiting antibody to trypanosoma lewisi. 196213882937
incidence of trypanosoma lewisi in puerto rican bats. 196213894373
depression of parasitemia in trypanosoma lewisi infection of rats injected with 6-mercaptopurine. 196213863072
changes in lactic dehydrogenase levels of trypanosoma lewisi associated with appearance of ablastic immunity. 196414213222
ultrastructure of trypanosoma lewisi. 196414244808
synthesis of unsaturated fatty acids in the slime mold physarum polycephalum and the zooflagellates leishmania tarentolae, trypanosoma lewisi, and crithidia sp.: a comparative study. 196514280472
effect of x-irradiation on trypanosoma lewisi infection in the rat. 196514281214
oxygen uptake by trypanosoma lewisi complex cells--i. l isolate. 196514314982
effect of bacterial endotoxin on trypanosoma lewisi infections in rats. 196514339383
antigenic relationships among trypanosoma lewisi--complex cells. i. agglutinins in antisera. 196514342129
serum transaminases and aldolase in rats inoculated with trypanosoma lewisi. 19665933980
oxygen uptake by trypanosoma lewisi-complex cells. ii. r and l isolates compared. 19665940094
a trypanosoma lewisi-like organism from the rabbit, sylvilagus floridanus, in virginia. 19665942537
oxygen uptake by trypanosoma lewisi complex cells. 3. c isolate. 19665943918
the effects of adrenalectomy and splenectomy on trypanosoma lewisi infection in white rats. 19664288989
phospholipids of trypanosoma lewisi, t. vivax, t. congolense, and t. brucei. 19676026221
host serum malic dehydrogenase activity associated with trypanosoma lewisi infection. 19676027419
virulent trypanosoma lewisi infections in cortisone-treated rats. 19676022387
trypanosoma lewisi infections in normal rats and in rats treated with dexamethasone. 19685643477
fine structure and replication of the kinetoplast of trypanosoma lewisi.the kinetoplastic dna of trypanosoma lewisi is described as a filamentous body lying within a mitochondrion, with the filaments oriented parallel to the long axis of the cell. the manner of fixation, the replicative state, and perhaps the physiological state of the cell, may result in slight morphological differences among such bodies. the kinetoplastic dna replicates to form "left" and "right" rather than "upper" and "lower" members, and both the kinetoplast and nucleus incorporate radiothymidi ...19685677967
mechanical transmission of trypanosoma lewisi (kinetoplastida: trypanosomidae) by rhodnius prolixus (hemiptera: reduviidae). 19685699976
growth and immunologic studies on the culture forms of trypanosoma lewisi. 19685703435
[studies on the experimental infection with trypanosoma lewisi in mice]. 19685707633
the effects of pantothenic acid, pantoyltaurine, salicylate and related compounds on the in vitro and in vivo growth of trypanosoma lewisi. 19685710274
[behavior of the blood mucoproteins in rats infected with trypanosoma lewisi]. 19685715925
[behavior of serum copper in rats during experimental infection with trypanosoma lewisi]. 19685715931
[behavior of iron in the blood in experimental infection with trypanosoma lewisi]. 19685715932
comparison of mitochondrial enzymes between young and adult forms of trypanosoma lewisi. 19685719060
[on the host specificity of trypanosoma lewisi infection]. 19685719578
further studies on antigenic changes in trypanosoma lewisi. 19684975999
mouse serum as an environment for the growth of trypanosoma lewisi. 19684172378
respiratory activity of trypanosoma lewisi during several phases of infection in the rat. 19684236168
trypanosoma lewisi: creatine phosphokinase, ornithine carbamyl transferase, atpases, pi, and glucose levels in the rat host. 19684236169
chromatographic separation of a rat serum growth factor required by trypanosoma lewisi. 19694180860
[analysis and preparation of antigens from trypanosoma lewisi]. 19694987192
[trypanosoma cruzi infection in mice following their sensitization with trypanosoma lewisi]. 19694976979
the fine-structure of the epimastigote forms of trypanosoma lewisi in the rectum of the flea, nosopsyllus fasciatus. 19695769498
carbohydrate transport in trypanosoma lewisi. 19695778271
comparative studies on blood stream and culture forms of trypanosoma lewisi. i. oxygen utilization, carbon dioxide production and glucose uptake. 19695788607
[immunological relations between trypanosoma cruzi and trypanosoma lewisi]. 19695788822
the attachment of trypanosoma lewisi in the rectum of its vector flea nosopsyllus fasciatus. 19695789066
comparative immunological studies on somatic antigens and secretion-excretion products of blood stream and culture forms of trypanosoma lewisi. i. protective immunity and the agglutinin response. 19695795103
development of trypanosoma lewisi in experimental chimaeras. 19695806200
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