Archives internationales de physiologie et de biochimie最新文献_第6页

[Mechanism of pulmonary gas exchange during growth]. [生长过程中肺气体交换的机制]。

Archives internationales de physiologie et de biochimie Pub Date : 1990-06-01

P Escourrou

引用次数: 0

[Pulmonary aging]. (肺老化)。

Archives internationales de physiologie et de biochimie Pub Date : 1990-06-01

H Guenard

引用次数: 0

[Trial on the objective evaluation of visual acuity and its maturation by the method of evoked visual potentials]. 视觉诱发电位法客观评价视敏度及其成熟度的试验

Archives internationales de physiologie et de biochimie Pub Date : 1990-04-01

L Marechal, J Faidherbe

{"title":"[Trial on the objective evaluation of visual acuity and its maturation by the method of evoked visual potentials].","authors":"L Marechal, J Faidherbe","doi":"","DOIUrl":"","url":null,"abstract":"We have developed a method to estimate foveal visual acuity (VA) through analysis of VEPs. It consists in determining the smallest check size in a pattern reversal that elicits a significant cortical response. The VEP is regarded as significant if the P 100 amplitude reaches a pre-established level in the signal to noise ratio. A valid criterion to determine normal VEP-VA emerges from the testing of 84 emmetropic and ametropic eyes: within our stimulation and recording conditions, a significant VEP response to the reversal of seven minutes checks corresponds to normal foveal acuity. This criterion has also proved pertinent to discriminate between normal VAs of 20/20 and decreased VAs (20/40 or less) with four other groups of subjects: 14 adult eyes whose VAs of 20/20 are decreased through Bangerter occlusives, 32 emmetropic and ametropic eyes belonging to five-years-olds children, 28 emmetropic and ametropic eyes of twelve-years-olds. In order to guarantee the validity of our results we carried out a double-blind study with ophthalmologists. The relevance of the method we suggest is related to that of the method which consists in extrapolating the regression line between VEP amplitudes and the pattern element sizes. At least we have aimed at establishing VEP norms for the maturation of VA. We have collected data from the following subjects: 5 infants tested monthly between 1 and 6 months, 31 infants ranging in age from 1 to 16 months, 10 five-year-old children, 13 twelve-year-olds, and 11 subjects aged 20. Within our stimulation and recording conditions a significant evoked response to the reversal of seven minute checks can be observed from 8 months onward. With an eight-month-old infant this response to the reversal of seven minute checks cannot be identified to the same response with an adult. There are two major differences: the latency of the major positive component is longer, and the structure of the evoked response consists of fewer components.","PeriodicalId":8170,"journal":{"name":"Archives internationales de physiologie et de biochimie","volume":"98 2","pages":"TD1-96"},"PeriodicalIF":0.0,"publicationDate":"1990-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12859439","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

Atrial natriuretic peptide increases norepinephrine uptake in the central nervous system. 心房利钠肽增加中枢神经系统对去甲肾上腺素的摄取。

Archives internationales de physiologie et de biochimie Pub Date : 1990-03-01 DOI: 10.3109/13813459009115746

B E Fernandez, A E Dominguez, M S Vatta, M A Mendez, L G Bianciotti, A Martinez Seeber

引用次数: 3

Potassium influx in human neonatal red blood cells. Partition into its major components. 人类新生儿红细胞中的钾流入。划分成它的主要组成部分。

Archives internationales de physiologie et de biochimie Pub Date : 1990-03-01 DOI: 10.3109/13813459009115734

R E Serrani, G Venera, I A Gioia, J L Corchs

引用次数: 2

[In vitro effects of 1,25-dihydroxycholecalciferol on alkaline phosphatase and gamma-glutamyltransferase activity in hypophysectomized rats]. [1,25-二羟基胆骨化醇对去垂体大鼠碱性磷酸酶和γ -谷氨酰转移酶活性的影响]。

Archives internationales de physiologie et de biochimie Pub Date : 1990-03-01 DOI: 10.3109/13813459009115738

M Prelot, T X Do, P Planchenault, A Girault

{"title":"[In vitro effects of 1,25-dihydroxycholecalciferol on alkaline phosphatase and gamma-glutamyltransferase activity in hypophysectomized rats].","authors":"M Prelot, T X Do, P Planchenault, A Girault","doi":"10.3109/13813459009115738","DOIUrl":"https://doi.org/10.3109/13813459009115738","url":null,"abstract":"Effects in vitro of 1,25-dihydroxycholecalciferol (1,25-(OH)2D3) on alkaline phosphatase (PAL), gamma-glutamyltransferase (gamma-GT) and acid phosphatase (PAC) activities were investigated on renal cortex from hypophysectomized rats. In these animals the biosynthesis of 1,25-(OH)2D3 and the specific activities of kidney PAL and gamma-GT were decreased. The course of these effects was determined from 45 min to 8 h. In the presence of 1,25-(OH)2D3 (2 x 10(-6) M) a delayed (5h) but simultaneous stimulation of the three enzymes was observed. It reached a maximum at 6h and disappeared at 8h. The dose-response relation was studied at 6h. In the presence of 1,25-(OH)2D3 (5 x 10(-7) M), the three enzymes were activated. The effect was maximal at 10(-6) M; it was +22% for PAL, +17% and +15% respectively for gamma-GT and PAC compared with controls. Cycloheximide suppressed the induction of PAL but not of gamma-GT activity. The effects of the secosteroid on renal enzymes seems to be a pharmacological more than a physiological one.","PeriodicalId":8170,"journal":{"name":"Archives internationales de physiologie et de biochimie","volume":"98 1","pages":"59-66"},"PeriodicalIF":0.0,"publicationDate":"1990-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3109/13813459009115738","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12857540","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: 3

[Study of deglutition using various sound signals]. [利用各种声音信号研究吞咽]。

Archives internationales de physiologie et de biochimie Pub Date : 1990-03-01 DOI: 10.3109/13813459009115740

D Lebel, C Parel, J Thouvenot

{"title":"[Study of deglutition using various sound signals].","authors":"D Lebel, C Parel, J Thouvenot","doi":"10.3109/13813459009115740","DOIUrl":"https://doi.org/10.3109/13813459009115740","url":null,"abstract":"In man quantitative information on deglutition may be obtained with the aid of various sounds recorded by way of microphone and magnetic tapes. The different tapes, microphonic, dynamic and piezoelectric, can be compared through the use of a Doppler signal in high middle position, thus showing the backward movements of the mylohyoïdeus. The sound of the deglutition consists of 1 to 3 peaks of great amplitude: 350 +/- 180 microV or 14 +/- 3.3 mV according to the type of microphone used (the piezo gives the greatest amplitude, specially in low frequency range); duration for the main phoneburst: 48 +/- 24 ms with a prolongation with the smaller noises: so total duration amounts to 400 ms. Each sound impulsion repeated in 10 Hz range includes frequency up to 6 KHz. The direct recording on a polygraph falls into 10-60 range; upper frequencies may be eliminated by filtering. In front, the inspiratory relative time increases of 57 +/- 12% without deglutition whereas it reaches 62 +/- 16% with deglutition. In clinical situation, a magnetic tape recorder can be used. The main components in normal situation of deglutition of saliva, water or yogurt show a frequent variability. Nevertheless, a certain number of recurring impulsions can be defined according to the type of deglutition, thus further defining several basic types of deglutition. Amplitude and duration deglutition type 1 (= one impulsion) was observed in young subjects for saliva and yogurt; deglutition type 2-3 (greater than or equal to 200 ms) more frequently for water and also in oldest subjects, whatever the mode of deglutition. In some pathological situations, a significant increase of amplitude and duration was observed. Technical conditions are discussed for application in clinical situations and their control in laboratory.","PeriodicalId":8170,"journal":{"name":"Archives internationales de physiologie et de biochimie","volume":"98 1","pages":"75-86"},"PeriodicalIF":0.0,"publicationDate":"1990-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3109/13813459009115740","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12857543","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: 18

Tocopherol mobilization during dynamic exercise after beta-adrenergic blockade. 肾上腺素能阻断后动态运动中生育酚的动员。

Archives internationales de physiologie et de biochimie Pub Date : 1990-03-01 DOI: 10.3109/13813459009115745

G Camus, J Pincemail, A Roesgen, E Dreezen, F E Sluse, C Deby

引用次数: 12

The significance of high molecular weight kininogen for contact activation of rat blood coagulation, in vitro. 高分子量激肽原对大鼠体外凝血接触活化的意义。

Archives internationales de physiologie et de biochimie Pub Date : 1990-03-01 DOI: 10.3109/13813459009115739

J Damas, V Bourdon

引用次数: 1

Environmental lighting and muricidal behaviour in the male Wistar rat. 环境光照与雄性Wistar大鼠的杀人行为。

Archives internationales de physiologie et de biochimie Pub Date : 1990-03-01 DOI: 10.3109/13813459009115732

S Giammanco, M Ernandes, M A Paderni

引用次数: 7