Revista espanola de fisiologia最新文献

c-fos expression in the rat hypothalamic paraventricular nucleus induced by LiCl: descending projections to the dorsal vagal motor nucleus. LiCl诱导大鼠下丘脑室旁核中c-fos的表达:迷走神经背运动核的下行投射。

Revista espanola de fisiologia Pub Date : 1997-12-01

F Portillo, M Carrasco, J J Vallo

引用次数: 0

Rate of muscle protein synthesis in rats fed raw and extruded pea diets. 生豌豆和挤压豌豆喂养大鼠的肌肉蛋白质合成率。

Revista espanola de fisiologia Pub Date : 1997-12-01

R Alonso, S Santidrián, F Marzo

引用次数: 0

Effects of 3-hydroxybutyrate on the hypoxic and reoxygenated atria from fed and fasted rats. 3-羟基丁酸酯对喂养和禁食大鼠缺氧和复氧心房的影响。

Revista espanola de fisiologia Pub Date : 1997-12-01

A Varela, G Testoni, M Carregal, V Dalamon, E A Savino

引用次数: 0

Creatine supplementation does not improve physical performance in a 150 m race. 补充肌酸不能提高150米比赛中的体能表现。

Revista espanola de fisiologia Pub Date : 1997-12-01

C Javierre, M A Lizarraga, J L Ventura, E Garrido, R Segura

引用次数: 0

Asymmetrical oxygen availability from serosal and luminal sides of rat distal colon epithelium. 大鼠远端结肠上皮浆膜和管腔两侧的不对称供氧性。

Revista espanola de fisiologia Pub Date : 1997-12-01

F D Saraví, T A Saldeña, L M Cincunegui, G E Carra

{"title":"Asymmetrical oxygen availability from serosal and luminal sides of rat distal colon epithelium.","authors":"F D Saraví, T A Saldeña, L M Cincunegui, G E Carra","doi":"","DOIUrl":"","url":null,"abstract":"Short-circuit current (Isc) and transepithelial potential difference (PD) of the rat distal colon mucosa are sensitive to acute hypoxia in vitro. The relative contribution of luminal and serosal oxygenation in sustaining Isc and PD was assessed. Rat distal colon Isc and PD responses to hypoxia and reoxygenation of preparations of mucosa-submucosa, and of isolated mucosa (with and without the mucus gel layer), mounted in an Ussing chamber, and of sacs of everted and non-everted isolated mucosa, were measured. In Ussing chambers, a 5-min total (bilateral) hypoxia reduces Isc and PD by 50 to 70%, while an overshoot was observed on reoxygenation. Serosal hypoxia caused about the same effect as total hypoxia, with complete recovery on reoxygenation. Luminal hypoxia had no effect in either Isc or PD. After total hypoxia, selective serosal reoxygenation allowed complete recovery of Isc and PD; addition of luminal reoxygenation did not further increase Isc and PD. Luminal reoxygenation after total hypoxia did not modify the decrease in Isc and PD, but addition of serosal reoxygenation led to complete recovery. A similar behaviour was seen in isolated mucosa preparations without the mucus gel layer. Baseline Isc and PD of everted sacs were about 45% of those of non-everted sacs, but their response to a hypoxic challenge was slightly attenuated. On reoxygenation, both everted and non-everted sacs showed complete recovery. Summing up: serosal oxygenation is both necessary and sufficient to sustain rat distal colon Isc and PD, while luminal oxygenation is not; there seems to exist a barrier, different from the mucus gel layer, for oxygen access from the luminal side of the epithelium; and distal colon isolated mucosa everted sac preparations are suboptimally oxygenated.","PeriodicalId":21473,"journal":{"name":"Revista espanola de fisiologia","volume":"53 4","pages":"367-75"},"PeriodicalIF":0.0,"publicationDate":"1997-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20502382","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

Effect of dithiothreitol on mucus gel layer and electrophysiological properties in rat colon. 二硫苏糖醇对大鼠结肠黏液凝胶层及电生理特性的影响。

Revista espanola de fisiologia Pub Date : 1997-12-01

T A Saldeña, F D Saraví, O R Arrieta, L M Cincunegui, G E Carra

引用次数: 0

Heterogeneous responsiveness of normolipemic women to n-3 long chain fatty acid supplementation. Changes in serum lipids and apoproteins. 正常血脂妇女对n-3长链脂肪酸补充的异质反应性。血脂和载脂蛋白的变化。

Revista espanola de fisiologia Pub Date : 1997-12-01

F J Sánchez-Muniz, S Bastida, E Quintas, M C Merinero, S Rodríguez-Gil

{"title":"Heterogeneous responsiveness of normolipemic women to n-3 long chain fatty acid supplementation. Changes in serum lipids and apoproteins.","authors":"F J Sánchez-Muniz, S Bastida, E Quintas, M C Merinero, S Rodríguez-Gil","doi":"","DOIUrl":"","url":null,"abstract":"The effect of 10 day-low dosage of n-3 long chain fatty acids (390 mg/day of EPA and 252 mg/day of DHA) on lipid and apolipoprotein (Apo) concentrations has been studied in nine normolipidaemic women aged 28.9 +/- 4.2 years. n-3 fatty acid supplementation did not significantly decrease total cholesterol and triglyceride levels but markedly decreased the Apo A1 and Apo B concentrations (12.7%, p < 0.01 and 23.1%, p < 0.001, respectively), while the Apo A1/Apo B ratio significantly increased (14.8%, p < 0.02). In contrast to the individual variations found for triglycerides and cholesterol, Apo changes indicate a fairly homogeneous response to the fish oil supplement. In seven women Apo A1 decreased (> 10%), whereas Apo B decreased (> 10%) in all of them. The Apo A1/Apo B ratio increased (> 10%) in five of these nine women. Changes in Apo A-1 and Apo B did not significantly correlate with changes in serum lipids. These findings suggest that short-term supplementation with low amount of n-3 long chain fatty acids, EPA and DHA, influences the serum Apo content more than the lipid levels in normolipidaemic women.","PeriodicalId":21473,"journal":{"name":"Revista espanola de fisiologia","volume":"53 4","pages":"349-54"},"PeriodicalIF":0.0,"publicationDate":"1997-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20466003","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

Downmodulation of HLA class I expression by dexamethasone in MCF-7 cell line. 地塞米松下调MCF-7细胞系HLA I类表达的研究。

Revista espanola de fisiologia Pub Date : 1997-12-01

F Rodríguez, M Redondo, M L Hortas-Nieto, T Téllez-Santana, V Pérez-Valero, F Ruiz-Cabello

引用次数: 0

Antioxidative effect of melatonin in rat brain oxidative stress induced by Adriamycin. 褪黑素对阿霉素所致大鼠脑氧化应激的抗氧化作用。

Revista espanola de fisiologia Pub Date : 1997-09-01

P Montilla, I Túnez, M C Muñoz, J V Soria, A López

{"title":"Antioxidative effect of melatonin in rat brain oxidative stress induced by Adriamycin.","authors":"P Montilla, I Túnez, M C Muñoz, J V Soria, A López","doi":"","DOIUrl":"","url":null,"abstract":"The effect of melatonin administration on the oxidative stress induced by a high dose of Adriamycin (AD, doxorubicin hydrochloride) in plasma, hypothalamus and brain cortex of rats, as well as lipoperoxide changes, and catalase activity (CAT) levels have been studied. After administration of a single high AD dosis (25 mg/kg, i.p.), melatonin was injected daily three days before and after oxidative stress induction. The AD injection produced a significant lipoperoxide increase in plasma, hypothalamus and brain cortex, which was prevented by melatonin. CAT activity mean values decreased in hypothalamus by AD, effect which was reverted and increased by simultaneous melatonin administration. CAT activity was not changed after AD, melatonin or AD + melatonin administration in plasma and brain cortex. These results, especially those concerning lipoperoxide content changes, showed a powerful antioxidative effect of melatonin at both neural and extraneural levels in rats. CAT changes in the presence of melatonin suggest that there is a relationship between a scavenger role of the pineal hormone and a high oxidative activity in the brain hypothalamy area. When these results are taken together, they also show that melatonin, besides, producing the extraneural effect, can act as a powerful antioxidative agent in organs such as the brain, very rich in lipid susceptible to oxidation in the neuronal as well as the extraneuronal tissues.","PeriodicalId":21473,"journal":{"name":"Revista espanola de fisiologia","volume":"53 3","pages":"301-5"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20370697","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

Maintenance of the threshold/maximum heart rate quotient in swimmers. 游泳者阈值/最大心率商的维持。

Revista espanola de fisiologia Pub Date : 1997-09-01

V J Fernández-Pastor, F Pérez, J C García, A M Diego, F Guirado, N Noguer

引用次数: 0