V Neştianu, E Brăiloiu, S Mihăilescu, D D Brănişteanu
{"title":"Intracellular pH: functions and regulatory mechanism.","authors":"V Neştianu, E Brăiloiu, S Mihăilescu, D D Brănişteanu","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77362,"journal":{"name":"Revue roumaine de physiologie (Bucharest, Romania : 1990)","volume":"27 1","pages":"61-73"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13250037","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}
I Drăgan, V Dinu, M Mohora, E Cristea, E Ploeşteanu, V Stroescu
{"title":"Studies regarding the antioxidant effects of selenium on top swimmers.","authors":"I Drăgan, V Dinu, M Mohora, E Cristea, E Ploeşteanu, V Stroescu","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The authors performed another controlled trial in 33 top swimmers (16 girls and 17 boys) in order to make evident some acute and chronic effects (antioxidant) of selenium. Lipid peroxides (MDA-malondialdehyde), nonproteic--SH (essential glutathione) in the serum and blood lactate had been recorded initially on basal conditions and after 2 h endurance training (swimming) accompanied by a per oral administration of 150 micrograms selenium (respectively placebo); one week later we applied the cross-over method. In another trial we continued the treatment with 100 micrograms selenium daily for 14 days (n = 9), respectively placebo (n = 7) and then we applied the crossover method for another 14 days. The above biochemical parameters were recorded initially at rest, under basal conditions, after 14 days of treatment and again after 14 days of treatment, when crossing-over. No significant changes were noticed after a single dose + 2 h hard training, both under selenium and placebo treatment and also when the cross-over method was applied. Fourteen days of selenium treatment induced significant changes of lipid peroxides (especially when the subjects came after placebo) and nonproteic--SH, compared to placebo, changes which support the idea of some antioxidant effects of selenium which might be useful in endurance athletes.</p>","PeriodicalId":77362,"journal":{"name":"Revue roumaine de physiologie (Bucharest, Romania : 1990)","volume":"27 1","pages":"15-20"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13249320","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":"Intracardiac electrical discharge in terminating atrial fibrillation.","authors":"S Cotoi, E Caraşcă, A Incze, D Podoleanu","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A new intracavitary technique for internal defibrillation in atrial fibrillation is presented. The discharge takes place between the distal electrodes of the catheter placed in the right atrium and a thoracic paddle. Four cases are discussed, and the indications for this type of defibrillation are considered. Internal defibrillation can be done when, for other purposes, an electrode catheter is already placed in the right atrium.</p>","PeriodicalId":77362,"journal":{"name":"Revue roumaine de physiologie (Bucharest, Romania : 1990)","volume":"27 1","pages":"21-4"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13249324","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":"Coagulation and fibrinolysis in rats after confinement hypokinesia.","authors":"P Groza, M Artino-Rădulescu, M Munteanu","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Our previous experiments (14) (15) dealt with the dynamic of the fluid-coagulant equilibrium in rats after exposure to confinement hypokinesia (CHK) at different time intervals, 1, 3, 7, 21, 28 and 35 days. We found a decreased Quiq and Howell time (QT and HT) in some relation with the time of exposure, with a tendency to normalization after 21 days. The same evolution was shown by the number of thrombocytes and of the euglobulin lysis time (ELT). In this work we prolonged the exposure to CHK for 60 days, an interval after which a series of other functional parameters significantly approached initial control values (16). We found an important approach to normal values also with the QT, HT, Elt and with the number of thrombocytes. Concomitantly, the plasma concentration of corticosterone (the principal glucocorticoid of rats), that increased over shorter intervals, approached also control values after 60 days of exposure to CHK. Nevertheless, it can not explain the changes of coagulability, because it decreases after adrenalectomy but the QT, HT and thrombocytes are already decreased. For these and other reasons it results that the relation of adrenal hormones to coagulation needs be further clarified.</p>","PeriodicalId":77362,"journal":{"name":"Revue roumaine de physiologie (Bucharest, Romania : 1990)","volume":"27 1","pages":"3-8"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13249325","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 the perfusion of amrinone and milrinone on the ventricular fibrillation thresholds in isolated Langendorff perfused guinea-pig hearts.","authors":"B Cuparencu, C Tomuş, C Feştilă","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77362,"journal":{"name":"Revue roumaine de physiologie (Bucharest, Romania : 1990)","volume":"27 1","pages":"9-13"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13250045","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}
D L Dumitraşcu, P Szanto, S Cotul, S Tamaş, D Dumitraşcu
{"title":"The clearance of colloidal particles by Kupffer cells in collagen disease.","authors":"D L Dumitraşcu, P Szanto, S Cotul, S Tamaş, D Dumitraşcu","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The Kupffer cells clearance of colloidal 198Au particles with a diameter of 200-300 A was estimated in 14 subjects with different collagen diseases: 7 without previous treatment and 7 under immunodepressive treatment compared to 10 controls. No difference between the subjects with collagen disease and controls was observed. The group with collagen disease under immunodepressive treatment has lower Kupffer cells clearance for colloidal gold particles than non-treated patients, without statistical significance.</p>","PeriodicalId":77362,"journal":{"name":"Revue roumaine de physiologie (Bucharest, Romania : 1990)","volume":"27 1","pages":"39-42"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13250038","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 ingestion of radioactive cesium on behavioral indices in rats.","authors":"S Râmboiu, P Derevenco, E Bordaş, C Fulea","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The experiments were carried out on 35 male (M) and female (F) rats contaminated by ingestion of Cesium--137(Cs) for 38 or 84 days; the total Cs activity was 288 Bq 460 Bq, and respectively. The duration of forced swimming decreased significantly in the contaminated groups as compared with controls (n = 16). The active avoidance reaction in the shuttle-box shows an increase in F groups and a decrease in M groups. The total latency time of the same reaction was lower in F and M treated rats on the first day of learning. The score of aggressive behavior rose significantly, especially in group F. These results can be explained by the sex dependence of Cs accumulation and by the neurotoxic action of the radionuclide on several central neural areas including monoaminergic and endocrine mechanisms.</p>","PeriodicalId":77362,"journal":{"name":"Revue roumaine de physiologie (Bucharest, Romania : 1990)","volume":"27 1","pages":"29-37"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13249321","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}