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Revista brasileira de pesquisas medicas e biologicas最新文献

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Effects of methoxyflurane on intraocular and cerebrospinal fluid pressure in dogs with spontaneous or artificial respiration. 甲氧基氟醚对自主呼吸或人工呼吸犬眼脑脊液压的影响。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-04-01
I Vassilieff, V S de Oliveira Vassilieff, A M Chagas
{"title":"Effects of methoxyflurane on intraocular and cerebrospinal fluid pressure in dogs with spontaneous or artificial respiration.","authors":"I Vassilieff, V S de Oliveira Vassilieff, A M Chagas","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 1","pages":"33-9"},"PeriodicalIF":0.0,"publicationDate":"1979-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11666537","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
[Sodium transport and potassium excretion by the salivary ducts of the dog's submandibular gland (author's transl)]. [狗的下颌下腺唾液管的钠转运和钾排泄[作者译]。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-04-01
R L Maringoni, A G Atta
{"title":"[Sodium transport and potassium excretion by the salivary ducts of the dog's submandibular gland (author's transl)].","authors":"R L Maringoni,&nbsp;A G Atta","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In order to study the possibility of the existence of a threshold for the transport capacity for sodium by the salivary ducts of the dog's submandibular gland 10 mongrel dogs were rendered hypernatremic by the intravenous infusion of a hypertonic sodium solution. The main excretory duct was canulated and the vegetative branch of the chorda tympani nerve was maximally excited for 20-minute periods intercalated by similar periods of rest. A threshold for sodium transport was observed, dependent on the amount of sodium offered to the salivary ducts and on the salivary flow. This threshold is around 75 uEq/min with a flow of saliva of 1.3 ml per minute. The excretion of potassium in these experiments did not show a trend to reach a threshold.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 1","pages":"25-31"},"PeriodicalIF":0.0,"publicationDate":"1979-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11666535","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
Taxonomic implications of Rhodotorula rubra isolates from polluted sea water in Rio de Janeiro, Brazil. 巴西里约热内卢污染海水中红红酵母分离物的分类意义。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-04-01
A N Hagler, L C Mendonça-Hagler
{"title":"Taxonomic implications of Rhodotorula rubra isolates from polluted sea water in Rio de Janeiro, Brazil.","authors":"A N Hagler,&nbsp;L C Mendonça-Hagler","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Sixty two strains of Rhodotorula rubra which were all isolated from marine and estuarine waters of Rio de Janeiro were found variable for 19 to 32 carbon assimilation tests used in yeast taxonomy. Two R. rubra strains which had latent assimilation of maltose and melizitose appeared to be intermediate with R. pilimanae. Strains of R. glutinis var dairenensis which differed from R. rubra only by weak assimilation of nitrate appeared to be intermediated between these two species. Our physiological tests suggested that R. rubra, R. pilimanae, and part of R. glutinis should be combined and this was supported by DNA base composition and coezyme Q data existing in the literature.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 1","pages":"63-6"},"PeriodicalIF":0.0,"publicationDate":"1979-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11774836","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
[Some ultrastructural aspects of the cardiac muscle of albino rat during the acute stress produced by formaldehyde (author's transl)]. [甲醛急性应激下白化大鼠心肌超微结构的观察[作者译]。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-04-01
A C Lopes, N Villa, L O Medeiros, D R Sustovich, W D Sasso
{"title":"[Some ultrastructural aspects of the cardiac muscle of albino rat during the acute stress produced by formaldehyde (author's transl)].","authors":"A C Lopes,&nbsp;N Villa,&nbsp;L O Medeiros,&nbsp;D R Sustovich,&nbsp;W D Sasso","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The authors studied ultrastructurally the influence acute stress, produced by formaldehyde, has on some aspects of the cardiac muscle metabolism in albino rats. The results showed that the cardiac muscle was induced to develop additional work, represented ultrastructurally by an increase in the number of lipid droplets and increased concentration and volume of mitochondria.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 1","pages":"81-8"},"PeriodicalIF":0.0,"publicationDate":"1979-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11774838","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
[Formol-gasoline concentration technique for eggs and cysts (author's transl)]. [甲醛-汽油浓缩技术用于卵和囊肿(作者译)]。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-04-01
S Akrum, E van der Kuyp
{"title":"[Formol-gasoline concentration technique for eggs and cysts (author's transl)].","authors":"S Akrum,&nbsp;E van der Kuyp","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Modification of the formol-ether concentration technique was made by substituting gasoline for ether and omitting Triton from the formula. Parallel examination of hundred (100) stool samples by the original and by the modified technique resulted in identical distribution of negative, light, medium and heavy positive slides. The same samples examined by the direct smear and by the Kato's technique gave lower rates of positives. The modified technique is useful in laboratories with limited material resources.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 1","pages":"89-92"},"PeriodicalIF":0.0,"publicationDate":"1979-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11774839","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
[Effects of parotidectomy on the blood sugar level and hepatic glycogen (author's transl]. 腮腺切除术对血糖水平及肝糖原的影响[作者译]。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-04-01
A Guimarães, D Teixeira, M R Vizioli, S Vieira
{"title":"[Effects of parotidectomy on the blood sugar level and hepatic glycogen (author's transl].","authors":"A Guimarães,&nbsp;D Teixeira,&nbsp;M R Vizioli,&nbsp;S Vieira","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This work was carried out in order to investigate the influence of parotid glands on the metabolism of carbohydrates in the rat. The animals were selected by age (10, 20, 30 and 40 days-old) and distributed in 3 experimental groups as follows: Group I -- Parotidectomized animals; Group II -- Sham-parotidectomized animals; and Group III -- Control animals. The animals from all the groups were sacrificed 20 days after the beginning of the experiment. From the discussion of the results it was observed that the parotidectomized animals at 20, 30 and 40 days have presented significantly larger glycaemic means than control animals. These control animals, by the other hand, have also presented significantly larger glycaemic means than sham-parotidectomized animals. Concerning the 10 days-old animals, the statistical analysis have not showed any significance among the three groups. The results obtained from hepatic glycogen dosages, in the same animals, have showed a coherence, because the animals that have presented larger glycaemic levels, have also presented less hepatic glycogen content; contrarily, the animals that have presented a less glycaemic levels, have also presented a larger amount of hepatic glycogen.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 1","pages":"53-61"},"PeriodicalIF":0.0,"publicationDate":"1979-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11666540","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
Modification of a mathematical model for survival curves in photobiology. 光生物学中生存曲线数学模型的修正。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-04-01
J V Pélico, R A Gomes
{"title":"Modification of a mathematical model for survival curves in photobiology.","authors":"J V Pélico,&nbsp;R A Gomes","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A modification of the Haynes' mathematical model (1966) can be suggested as a result of bacterial UV-survival experiments carried out. A new equation is proposed: lnS = Fi(x), + Fr(x), wherein x is the radiation dose, Fi(x) = -- kox describes how radiation damage is produced on the cell and Fr(x) = (krec + kc)x + Re(x) describes how repair systems act. ko is the relative inactivation efficiency of radiation on each cell. krec is the recombination recovery system efficiency. kc gives the additional repair increasing per cell when excision and recombination systems act simultaneously. Re(x) = a(1-e-bs) describes solely the excision repair process. The asymptote of non-exponential curves intercepts the survival fraction axis on the ordinate so (extrapolated point). In the modified model a=lnSo instead of a=So (Haynes' model).</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 1","pages":"67-73"},"PeriodicalIF":0.0,"publicationDate":"1979-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11587992","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
[Early immunological aspects in rats infected by Trypanosoma cruzi. II. Soluble antigen circulation and the modifications of serum complement from animals in sucessive days of the infection (author's transl)]. 克氏锥虫感染大鼠的早期免疫学研究。2动物在感染后连续几天的可溶性抗原循环和血清补体的变化[作者译]。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-04-01
A F de Siqueira, F F Filho, R D Ribeiro
{"title":"[Early immunological aspects in rats infected by Trypanosoma cruzi. II. Soluble antigen circulation and the modifications of serum complement from animals in sucessive days of the infection (author's transl)].","authors":"A F de Siqueira,&nbsp;F F Filho,&nbsp;R D Ribeiro","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A group of rats was infected by the Y strain of T. cruzi and three animals were bled daily from the 4th to the 13th days. The sera obtained each day, after being mixed, were used for dosing serum complement and for acting as antigens in the CFT with a Chagas' disease serum. The amount of circulating antigen increased gradually, reached a maximum in the 5th and 6th days and then decreased up to the 10th day; thereafter it increased attaining a new maximum in the 11th day and again decreased up to the 13th day. The dosage of the complement showed that the 50 per cent unit was about 70 x 10(-4) in the first few days of the infection, reached 130 -- 135 x 10(-4) in the 7th and 8th days, and was back again to the initial levels in the 13th day. These results suggest a relation between the circulation of antigens, the formation of antigen antibody complexes, and the fixation of the complement by such complexes.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 1","pages":"75-9"},"PeriodicalIF":0.0,"publicationDate":"1979-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11330888","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
Plasma lecithin: cholesterol acyltransferase activity in normal full-term newborn infants. 血浆卵磷脂:正常足月新生儿胆固醇酰基转移酶活性。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-04-01
J R Cisternas, A Llanos, J M Celedon, R Riquelme
{"title":"Plasma lecithin: cholesterol acyltransferase activity in normal full-term newborn infants.","authors":"J R Cisternas,&nbsp;A Llanos,&nbsp;J M Celedon,&nbsp;R Riquelme","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Plasma lecithin: cholesterol acyltransferase (LCAT) activity was studied in 100 normal full-term newborn infants during the first few days of life. The present study shows that plasma LCAT activity present at birth-though at much lower levels than those in the maternal blood-undergoes a fall after birth followed by a rise. It is also shown that the activity of the plasma LCAT enzyme is not strictly linked to the esterification of plasma-free cholesterol in the first three days after birth. However, from the fourth day onwards, there was a good correlation between LCAT activity and esterification of plasma-free cholesterol. The results suggest that plasma LCAT in newborn infants could be partially derived from maternal sources.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 1","pages":"9-15"},"PeriodicalIF":0.0,"publicationDate":"1979-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11666541","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
[Prilocaine as an hypotensive ocular agent (author's transl)]. [普拉卡因作为一种降压眼药[作者简介]]。
Revista brasileira de pesquisas medicas e biologicas Pub Date : 1979-04-01
S T Arbex, A C Neder, T R de Mattos Filho, A O Ramos
{"title":"[Prilocaine as an hypotensive ocular agent (author's transl)].","authors":"S T Arbex,&nbsp;A C Neder,&nbsp;T R de Mattos Filho,&nbsp;A O Ramos","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The purpose of the present investigation was to determine the action of prilocaine as hypotensive ocular agent. Prilocaine in doses of 2.5 mg/kg, 5 mg/kg and 10 mg/kg was administered intravenously in dogs anesthetized with sodium pentobarbital (30 mg/kg). The experiments show that prilocaine when used i.v. in doses of 2.5 mg/kg and 5 mg/kg causes ocular hypotension in dogs, whereas doses of 10 mg/kg i.v. produce this effect only when artificial respiration is employed, thus preventing the increase of the pCO2 in the blood.</p>","PeriodicalId":21265,"journal":{"name":"Revista brasileira de pesquisas medicas e biologicas","volume":"12 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"1979-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11667778","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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