摘要:

Summary.The effect of estrone treatment on ethyl alcohol intoxation in castrated rabbits has been studied; the degree of intoxication being established by means of reflex criteria and referred to the blood alcohol level.1. Estrone treatment diminishes the degree of alcohol intoxication, STÖRTEBECKER'S (1937 b) observation being confirmed.2. After estrone treatment the animals only attain the same degree of intoxication at a higher blood alcohol level. The difference in blood alcohol concentration has been used as a measure for the antinarcotic effect of estrone.3. The general alcohol metabolism is not affected by estrone, the oxidation rate β and the distribution factor γ being unaltered. The effect of estrone on alcohol intoxication must thus be searched for elsewhere, e. g. in the central nervous system.4. The varying resistance to alcohol depends i. a. on the hormonal state of the individual, and the amount of estrogens in the organism seems to be an important cau

ISSN:0001-6772    

DOI:10.1111/j.1748-1716.1943.tb02057.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

Summary.The water transport through the gills of young mussels (Mytilus edulis) has been calculated by means of photometric determinations of the percentage amount removed in unit time of the unicellular alga Synechococcus from a known quantity of a suspension of the algæ.Having found in the literature a set of figures, from which the necessary calculations could be made, a comparison with pelagic larvæ (oyster) has been possible. It has been found that 1 g larvæ will transport 6.7 l water per hour, young bottom stages 0.19 l and adults 0.01‐0.04 l water per hour and p

ISSN:0001-6772    

DOI:10.1111/j.1748-1716.1943.tb02058.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

Summary.A centrifugation method for ultrafiltration is described. The essential point of this is the use of factory made cellophane tubes, which when wet become permeable for crystalloids. They are used in conjunction with a basket of metal wire netting. The filtration rate and permeability varies with the cellulose content of the membrane.

ISSN:0001-6772    

DOI:10.1111/j.1748-1716.1943.tb02059.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

Summary.1. Reflectory homeostasis can only be effected by means of nonadapting sensory endings reporting the controlled level to the centers.2. At the same blood pressure the large fibers of the cardioaortic nerves of rabbits with experimental renal hypertension of a few months standing carry a number of impulses that is not significantly less (6 % ± 9 %) than in normal controls. Thus, the baroceptor endings in the aorta connected with the large depressor fibers either lack progressive adaptation or adapt at an extremely slow rate.3. The aortic baroceptors are not involved in the production of renal hypertension of the Goldblatttype.4. There is no correlation between the impulse frequencies in the two cardio‐aortic nerves, besides that caused by common blood pressu

ISSN:0001-6772    

DOI:10.1111/j.1748-1716.1943.tb02060.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

Summary.The permeability of red corpuscles to amino acids is examined. It is shown that monarnino monocarbonic acids diffuse until an even partition is reached in the two water phases. This process takes less than 24 hours at 37°. The dicarbonic acids: glutaniic acid and aspartic acid are diffusing extremely slowly through the corpuscle membrane. It is demonstrated that monoamino monocarbonic acids are present in about the same concentration in the corpuscles and the plasma.The origin of the high amino‐N content of the corpuscles compared with the plasma is investigated and it is found that nearly all the excess amino‐N came from glutathione so that the concentration of true amino acids is equally high in the water phases of corpuscles and pl

ISSN:0001-6772    

DOI:10.1111/j.1748-1716.1943.tb02061.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

Zusammenfassung.Untersuchung des 02,‐Verbrauches narmaler, hypophysenloser und stieldurchtreniiter Kaninchen vor und zu verschiedenen Zeiten nach einer Oestronbehandlung.Der 0,‐Verbrauch stieldurchtrennter Kaninchen ist ebenso stark herabgesetzt wie nach einer Hypophysektomie.Durch die Oestronbehandlung sinkt der 02‐Verbrauch normaler Tiere, während er bei hypophysenlosen und stieldurchtrennten unverändert

ISSN:0001-6772    

DOI:10.1111/j.1748-1716.1943.tb02062.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

Summary.It is found that eserine retards the enzymic hydrolysis by serum cholin esterase of benzoyl cholin and acetyl‐β‐methyl cholin. The relation of this result to certain experiments of Kahaneand Levyis briefly discu

ISSN:0001-6772    

DOI:10.1111/j.1748-1716.1943.tb02063.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

Summary.1. Experimental studies are reported on the tolerance and reaction of rabbits to intravenous injection of Witte peptone, and it is illustrated that shock can be produced also in rabbits if only the peptone is injected in sufficient amount.2. The antithrombin content of rabbit blood is examined after injection of varying amounts of peptone. It is pointed out that, when shock is produced, it is possible also in rabbits to elicit an increased formation of heparin‐like substances in the blood. In addition, it is demonstrated that administration of smaller amounts of peptone may give a decrease in the antithrombin content of the blood. These findings are discusse

ISSN:0001-6772    

DOI:10.1111/j.1748-1716.1943.tb02064.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

Summary.In antagonizing the action of histamine and in surpressing anaphylactic symptoms the bile acids have properties similar to those previously described for the xanthines. The bile acids render smooth muscle insensitive to histamine; they also antagonize the motor action of a acetylcholine and of substance P on smooth muscle. The effect of histamine on blood‐pressure is only partially antagonized by bile acid

ISSN:0001-6772    

DOI:10.1111/j.1748-1716.1943.tb02065.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

Summary.After injections of liver extract in rabbits, an increase in reticulocyte‐ripening substances in plasma is found. In the first 24 hours after the injection the ripening substances in plasma can be activated with tyrosine in contrast to normal plasma and are therefore taken to be the unaltered liver substances.Injections of tyrosine alone in the same quantities as found in the liver extract used, also produced an increase, but exclusively of fully activated ripening substances. Controls with saline give no ris

ISSN:0001-6772    

DOI:10.1111/j.1748-1716.1943.tb02066.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY