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Revista brasileira de pesquisas medicas e biologicas最新文献

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Allometric study of the rat heart during the nursing period. 护理期大鼠心脏异速生长的研究。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1980-04-01
W A Ribeiro, S Iucif
{"title":"Allometric study of the rat heart during the nursing period.","authors":"W A Ribeiro, S Iucif","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"13 1-3","pages":"75"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18426373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Infant mouse test for the assay of thermostable (ST) enterotoxin from Escherichia coli. Histological studies and influence of mice age (author's transl)]. [用于测定大肠杆菌耐热性肠毒素的幼鼠试验。]组织学研究和小鼠年龄的影响[作者译]。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1980-04-01
A P Franceschi, D Q Tavares, A F de Castro
{"title":"[Infant mouse test for the assay of thermostable (ST) enterotoxin from Escherichia coli. Histological studies and influence of mice age (author's transl)].","authors":"A P Franceschi,&nbsp;D Q Tavares,&nbsp;A F de Castro","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Mices with different ages ranging 1 to 60 days old were inoculated with thermostable (ST) enterotoxin of Escherichia coli, either by intragastric injection through the abdominal wall or by intubation. Doses were proportional to body weight and values obtained for intestines/carcass weight ratios (RI/C) of inoculated mice showed that mice remained susceptible to the enterotoxin up to 16 days old, with RI/C values equal or greater than 0.085. Older mice were completely resistant to ST activity as RI/C values demonstrated. Histological observations showed that whole gut's fixation of inoculated mice was absolutely necessary since any handling of intestinal loops evoked artifactual alterations. Even though, alterations were found, probably of mechanical nature, caused by intestinal distension consequent to the increased fluid volume into gut's lumen. These alterations did not differ from those observed for both cholera and LT-E. coli enterotoxins, characterized by lymphatic and blood vascular dilatation within mucosae lamina propria, eventually shrinkage of lamna propria just below the epithelium as well epithelial's vacuolizations.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"13 1-3","pages":"31-6"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18045314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Studies on phage internal proteins. VI. Interaction of bacteriophage T4 internal proteins with T4 DNA in vivo and in vitro. 噬菌体内部蛋白的研究。六、体内外噬菌体T4内部蛋白与T4 DNA的相互作用。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1980-04-01
L C Benchetrit, U Bachrach
{"title":"Studies on phage internal proteins. VI. Interaction of bacteriophage T4 internal proteins with T4 DNA in vivo and in vitro.","authors":"L C Benchetrit,&nbsp;U Bachrach","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Internal proteins are basic proteins bound to the DNA of T4 coliphage. Centrifugation in sucrose gradients was employed to isolate DNA-internal proteins complexes formed in vitro. Polyacrylamide gel electrophoresis of radioactive internal proteins in the presence of sodium dodecyl sulfate followed by autoradiography of the gels was used to identify the DNA-bound proteins and to determine their respective abundance in these complexes as well as in the bacteriophage head. The internal proteins were found to bind to the phage DNA (in vitro experiments) at the same ratio as that of internal proteins associated with the viral DNA within the phage head (in vivo binding).</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"13 1-3","pages":"41-5"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17314800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Ultrastructural aspects of keratinization of the rat oral mucosa. II. Soft palate (author's transl)]. 大鼠口腔黏膜角化的超微结构研究。2软腭(作者译)]。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1980-04-01
M S Bezerra
{"title":"[Ultrastructural aspects of keratinization of the rat oral mucosa. II. Soft palate (author's transl)].","authors":"M S Bezerra","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This paper presents a study of the ultrastructure of the epithelium of the soft plate of the rat. General morphology, ratio and localization of ribosomes, filaments, mitocondria, spaces of stratum basale, stratum spinosum and stratum granulosum, are described. The stratum corneum presents modified desmosomes, no organelles and enlarged intercellular spaces. Cornified cells are constituted of a filament-like material, densely packed in an amorphous matrix.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"13 1-3","pages":"25-9"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17223766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Association between HBsAg and race in a mixed population of Northeastern Brazil. 巴西东北部混合人群HBsAg与种族的关系
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-12-01
M M Conceição, L G Lyra, E S Azevedo, N De Alameida-Melo, E F Da Fonseca
{"title":"Association between HBsAg and race in a mixed population of Northeastern Brazil.","authors":"M M Conceição,&nbsp;L G Lyra,&nbsp;E S Azevedo,&nbsp;N De Alameida-Melo,&nbsp;E F Da Fonseca","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The frequency of Australian antigen carriers (HBsAg) was studied in three samples from northeastern Brazil. In sample A there were 1000 women from Tsylla Balbino Maternity in Salvador; in sample B there were 1,512 blood donors from Salvador, and in sample C there were 930 blood donors from Aracaju. In sample A, B and C the observed frequency of carriers (HBsAg) was 1.20%, 1.58% and 2.04% respectively. These differences were not significant (x22 = 2.2; p greater than 0.25). There was no association between the carrier state and sex, age, ABO and Rh blood groups, Chagas' disease and rural origin. However, the frequency of carriers (HBsAg) increases from White to Black, as follows: Whites = 0.5%; Mulattoes = 1.91%, and Black = 1.96% (x22 = 7.91; p less than 0.02).</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 6","pages":"405-9"},"PeriodicalIF":0.0,"publicationDate":"1979-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11339819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[On Siphonaptera from rodents of Formosa county, Goiás State (author's transl)]. [论Goiás州福尔摩沙县啮齿动物的管翅目(作者译)]。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-12-01
D A Mello, D Brasil
{"title":"[On Siphonaptera from rodents of Formosa county, Goiás State (author's transl)].","authors":"D A Mello,&nbsp;D Brasil","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Polygenis bohlsi jordani (Costa Lima, 1937) (Siphonaptera) is for the first time recorded as ectoparasite on wild rodents captured in the \"cerrado\" area of Central Brazil. Seven out of nine rodents collected were found bearing P. b. jordani. The most common species found infested with the flea were: Zygodontomys lasiurus, Oryzomys eliurus, Calomys callosus and Nectomys squamipes.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 6","pages":"389-90"},"PeriodicalIF":0.0,"publicationDate":"1979-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11746841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Human serum hexosamine. Determination in Brazilian pemphigus foliaceus]. 人血清己糖胺。巴西叶状天疱疮的测定。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-12-01
J Salum, H D Guerra, M V Guerra, M M Salum
{"title":"[Human serum hexosamine. Determination in Brazilian pemphigus foliaceus].","authors":"J Salum,&nbsp;H D Guerra,&nbsp;M V Guerra,&nbsp;M M Salum","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The serum hexosamine levels of 39 patients with Pênfigo Foliáceo Brasileiro were determined. The mean value obtained, compared with the mean value found in 30 normal individuals in our laboratory, by Santos et al. (1977), shows that in this disease, the levels of serum glycosamine are higher than in the normal group. The application of Student's test (/t/) indicates a significant difference in the mean values (/t/) = 9,02 P greater than 0,001). Although little is known about the fundamental processes concerned with the increase of serum glycosamines, the authors based on the suggestions of Seibert et al. (1947) reason on the possibility that the essential lesion, i.e., the destruction of the intercellular cement (of glycoprotein nature) is an important factor in the increase of glycoproteins rich in glicosamines.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 6","pages":"421-3"},"PeriodicalIF":0.0,"publicationDate":"1979-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11746845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Liquid holding recovery in E. coli K12. II. Role of cellular multiplication. 大肠杆菌K12的持液回收率。2细胞增殖的作用。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-12-01
B R Aragão, R A Gomes
{"title":"Liquid holding recovery in E. coli K12. II. Role of cellular multiplication.","authors":"B R Aragão,&nbsp;R A Gomes","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>When UV-irradiated, wild-type E. coli cells are incubated in buffer before plating, consequent survival increases cannot be explained by repair mechanisms alone. Regardless of UV-dose, survival after 48-hours incubation reaches a \"plateau\" at 10(-1) survival level. An important fraction of the irradiated cells is capable of multiplying during buffer incubation, and the same phenomenon is observed with unirradiated E. coli whenever culture concentration is lower than 10(7) cells/ml. Protein contents per viable cell decreases significantly during buffer incubation. A similar phenomenon was observed in an excision deficient strain. Macromolecule biosynthesis was also observed during buffer incubation. We conclude that, under most experimental conditions, cellular multiplication plays a very important role in liquid holding recovery experiments.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 6","pages":"371-6"},"PeriodicalIF":0.0,"publicationDate":"1979-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11603416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Studies on the persistence of the infectivity of Trypanosoma cruzi. II. Persistence of infectivity of T. cruzi in dead bugs (author's transl)]. 克氏锥虫传染性持续性的研究。2克氏锥虫在死虫体内的持续传染性[作者译]。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-12-01
V A Soares, P D Marsden
{"title":"[Studies on the persistence of the infectivity of Trypanosoma cruzi. II. Persistence of infectivity of T. cruzi in dead bugs (author's transl)].","authors":"V A Soares,&nbsp;P D Marsden","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Investigations into the viability time of T. cruzi in dead bugs experimentally infected with \"Peru\" strain showed a maximum of 9 days for Dipetalogaster maximus and 8 for Triatoma infestans maintained at ambient temperature (26 degrees C). On refrigeration survival was increased to 60 days. In routine xenodiagnosis in the refrigerator 90 day survival was noted of both T. cruzi and the vector bug.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 6","pages":"367-70"},"PeriodicalIF":0.0,"publicationDate":"1979-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11603415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Glomerular immunopathology: comparative study with immunofluorescence and immunoperoxidase (author's transl)]. [肾小球免疫病理学:免疫荧光和免疫过氧化物酶的比较研究(作者译)]。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-12-01
L M Vieira, E N Sarno, F Ruzany, P R De Lacerda
{"title":"[Glomerular immunopathology: comparative study with immunofluorescence and immunoperoxidase (author's transl)].","authors":"L M Vieira,&nbsp;E N Sarno,&nbsp;F Ruzany,&nbsp;P R De Lacerda","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In order to evaluate the reliability of immunoperoxidase technic (IP) for immuno-deposits in frozen renal tissue, a single blind study was done comparing it with immunofluorescent technic (IF). Fifty renal biopsies were studied. Ten there were no deposits by IF or IP. In 40 of them the results showed the same specificity and greater intensity for IP. There were 25 cases with IgG, 22 with IgM, 9 with IgA, 3 with Clq, 27 with C3 and 3 with HbsAg. We concluded that IP can be used in place of IF for detection of the immune deposits in renal biopsies and that it offers an easier observation than the later.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 6","pages":"377-81"},"PeriodicalIF":0.0,"publicationDate":"1979-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11603417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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