{"title":"About the existence and endings of nerve fibres in the Cebus apella monkey's upper lip.","authors":"M M Iyomasa, B Kônig, I S Watanabe","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In the present research, fibres and nerve endings of upper lip of the Cebus apella monkey have been studied. Upper lip of 8 Cebus apella were analysed. The pieces were prepared according to the technic of Castro's silver impregnation and submitted to serial sections 8 micra thick. Our results permit to conclude that the Cebus apella monkey's upper lip has a great number of free nerve endings, between connective and epithelial layers in the mucosa and in the skin. The aspects of nerve fibres and their free and organized endings, like Meissner's corpuscles, in the upper lip mucosa of the monkey, allow comparison of similarity with those of man. The nerve endings in the lip skin of the Cebus monkey are also abundant, characterizing the hair follicles and sebaceous glands innervation and the free nerve endings encountered in the connective tissue as well as in the sub-epithelial layer.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"11 4-5","pages":"209-12"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11322581","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}
J F Figueiredo, S R Stella, A Gelman, H Ajzen, O L Ramos
{"title":"[Effect of hematocrit variation on the urinary sodium excretion in normal and uremic dogs (author's transl)].","authors":"J F Figueiredo, S R Stella, A Gelman, H Ajzen, O L Ramos","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The effect of progressive increase in hematocrit on urinary sodium excretion was studied in normal and uremic dogs submitted to expansion of the extracellular fluid volume. In normal dogs concomitant with hematocrit increases it was observed a decrease in urinary sodium excretion. On the other hand in uremic dogs submitted to the same experimental conditions it was verified an increase in urinary sodium excretion.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"11 4-5","pages":"213-21"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11926039","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}
{"title":"Drug-induced bone marrow aplasia.","authors":"A A Yunis","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"11 4-5","pages":"287-95"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11926048","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}
{"title":"[Infant mortality and socio-economic development: the case of São Paulo (author's transl)].","authors":"R Laurenti","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"11 4-5","pages":"297-302"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11322583","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}
{"title":"Inhibition of tectal neurons from telencephalic visual areas in pigeons.","authors":"L R Britto","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The author investigated the influence of efferent projections of visual telencephalic areas upon the optic tectum, in locally anesthetized, paralyzed and artificially ventilated pigeons, using extracellular unit recording and electrical stimulation by means of stereotaxically implanted bipolar electrodes. Despite the fact that some neurons located at superficial tectal layers could be driven by telencephalic shocks, the most consistent data are the inhibitory effects observed throughout the tectum, but mainly at deep layers. This effect was observed either on spontaneous activity or on electrically elicited spikes, by stimulating the optic tract. In the latter case, a critical interval (25--60 msec) was necessary to obtain maximal inhibition, when testing Wulst shocks previous to optic tract stimuli. These results show that the higher telencephalic visual area (the so-called Wulst) can modulate tectal activity, and so control the output of this region, by an example, to thalamic nucleus rotundus, second station of the tectofugal visual pathway. The Wulst-tectal relationship is discussed in its possible role in visual information processing and visually guided behaviours in pigeons, and also in comparison to mammalian corticotectal systems.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"11 4-5","pages":"223-7"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11926040","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}
P C Naoum, U A Teixeira, P E de Abreu Machado, O C Michelin
{"title":"The denaturation of human oxyhaemoglobin A, A2 and S by isopropanol/buffer method.","authors":"P C Naoum, U A Teixeira, P E de Abreu Machado, O C Michelin","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Human oxyhaemoglobin A and A2 from normal individuals and oxyhaemoglobin S from patients with sickle cell anaemia and sickle cell trait were studied using Isopropanol/buffer method at 37 degrees C and 40 degrees C. Hb S was less stable than Hb A, whereas Hb A2 was considerably more stable than either. Denaturation of Hb S was dependent on temperature and its concentration. Between the patients with sickle cell trait it was not possible to verify the influence of the concentration probably due to the small range used (from 38% to 44%).</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"11 4-5","pages":"241-4"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11926043","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}
{"title":"[The location of pediatric surgery (author's transl)].","authors":"L T Marchese","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"11 4-5","pages":"303-5"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11926049","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}
{"title":"Effects of methyltestosterone and oophorectomy in acute experimental mediocalcinosis in the rat.","authors":"M A Hodara, C Mundt-Britto, H B Haase","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Virgin female rats treated with vitamin D (VD) overdoses developed acute aortic mediocalcinosis. Methyltestosterone (MT) treatment inhibited calcinosis and/or accelerated the resorption of aortic calcium deposits. Oophorectomy performed four weeks after the beginning of VD treatment had no effect on mediocalcinosis. Furthermore, the rats that had been spayed seven months before VD were not protected by MT treatment as those that had been spayed four weeks after VD. Cartilaginous metaplasia, in a more or less advanced stage, was a frequent histological finding in the aorta.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"11 4-5","pages":"237-40"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11926042","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}
{"title":"Articular cartilage changes mechanically induced \"in vivo\". An experimental method approach in animals.","authors":"O L Da Silva, N Piva, J C Da Fonseca","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A machine designed upon the principles of a crank lever mechanism was built to produce excessive use of the joints of small animals by means of continuous flexion-extension movements. Articular cartilage changes could be consistently produced after 5 to 10 days of exercise. Histochemical studies of the articular cartilage demonstrated a decrease in proteoglycan and an increase in acid phosphatase. These findings suggest that this animal model may be of value for the analysis of the earliest degenerative stages of the articular cartilage.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"11 4-5","pages":"277-81"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11926047","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}
{"title":"[Role of the atrial stretch receptors in the regulation of the fluids of the anesthetized dog (author's transl)].","authors":"A G Atta, R L Maringoni, B Silveira Filho","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The role of the atrial stretch receptors in the regulation of the body fluids was investigated in the anesthetized dog. Two groups of 15 animals each were used. In the first group the distention was performed by the inflation with saline solution of a balloon previously introduced in the left atrium. In the second group the right atrium was distended. In the experiments with the left atrium diuresis was induced in all animals. In the right atrium only in 5 dogs the distention resulted in diuresis, in the remaining 10 animals there was, on the contrary, antidiuresis. In the experiments with diuresis, this was accompanied by a urine with a lower osmolarity than in the control period and a greater sodium excretion. Being more pronounced the hemodynamic changes in the animals in which the right atrium was distended, one could not in this experimental set-up conclude that the right atrium plays a role similar to the one of the left atrium in regulating the body fluids in the anesthetized animal.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"11 4-5","pages":"267-75"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11926046","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}