7-Dehydrosterols in prothoracic glands of the silkworm,Bombyx mori

Summary Sterol analysis of prothoracic glands of the silkworm,Bombyx mori revealed the presence of 7-dehydrocampesterol and 7-dehydrositosterol together with 7-dehydrocholesterol. It was also found that the amounts of these 7-dehydrosterols were increased in proportion to the ecdysone titer.     

Sterols of the brine shrimp,Artemia salina,from Mono Kake,California

Zusammenfassung Artemia salina vom Mono-See, Kalifornien, U.S.A., enhält Cholesterin und Cholestanol als ihr hauptsächlichstes Sterin. Diese Zusammensetzung ist ähnlich wie die jenige von im Laboratorium erzeugten Salz-Krabben und zwar trotzdem das Wasser des Mono-Sees ein pH von 9.6 und einen Salzgehalt von 2.23M hat¹⁶.

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Acknowledgment. This work was supported, in part, by a grant from the Long Beach (California) Heart Association.     

Compensatory growth of the ovaries,adrenal glands and kidneys in blinded,anosmic rats

Résumé Chez les rats qui ont subi une ablation de la glande pinéale, la présence simultanée de perte de vue et d'anosmie empèchent la croissance compensatoire de l'ovaire chez la femelle et celle des glandes surrénales chez la mâle. Une hypertrophie du rein provoquée expérimentalement après une néphrectomie unilatérale n'est pas modifiée par la perte de vue et l'anosmie.

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Supported by grant No. HD-06523, U. S. P. H. S.     

Chronic hyperesthesia in rats caused by lesions in the dorsal roots of the branchial plexus]

Traumatic avulsions of the brachial plexus in Man is followed by development of hyperesthesia which is known to be reistant to pharmacological medication. We have been able to reproduce this syndrome in the Rat and have used this disturbed animal as a model. This model will give us the possibility of studying nervous mechanisms responsible for these abnormal pains and to look for effective treatments.     

Molecular cloning of a cDNA encoding alpha-glucosidase in the digestive gland of the shrimp, Litopenaeus vannamei

The complete sequence of the 3-kb cDNA and the 5' genomic structure are reported for the gene encoding the shrimp alpha-glucosidase. Alpha-glucosidase cDNA was isolated from a shrimp digestive gland cDNA library. The 2830-base pair cDNA contains an open reading frame that encodes 919 amino acids. The shrimp alpha-glucosidase cDNA shows a high level of identity with that of the human sucrase-isomaltase, human maltase-glucoamylase, and human acid lysosomal alpha-glucosidase, indicating that the protein shares the same structural domains. The similarities among these proteins are found as clusters and characterize the glycosyl hydrolase family 31. To our knowledge, this is the first report to describe a satellite sequence in the 5' genomic structure before the TATA box in an invertebrate sequence.     

Accumulation of phenylpropanoids in the rectal glands of males of the Oriental fruit fly,Dacus dorsalis

Summary Two phenylpropanoid compounds, 2-allyl-4,5-dimethoxyphenol(II) and coniferyl alcohol(III), were characterized from body tissue of wild males of the Oriental fruit fly,Dacus dorsalis. These compounds accumulated in the rectal glands only when laboratory-reared males were fed with methyl eugenol. Compound II was released into the air during dusk, which coincides with the fly courtship period. Pheromonal and allomonal effects of the phenylpropanoids were examined.     

Adrenergic nerves in the major salivary glands of the rabbit

Zusammenfassung Es ist bekannt, dass die Ausbreitung der adrenergischen Speicheldrüsennerven der Ratte in enger Verbindung mit der Sekretion bei sympathischer Reizung steht. Die Submaxillaris- und Parotisdrüsen des Kaninchens waren reichlich mit adrenergischen Nerven versorgt. Die sympathische Sekretion der Submaxillarisdrüse war indessen sehr gering, während die der Parotisdrüse beträchtlich war. Die Versuche deuten darauf hin, dass die sympathischen Nerven nicht nur eine sekretorische Funktion haben.

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J. R. Garrett on leave from the Department of Oral Pathology, Kings College Hospital, London S.E. 5, wishes to acnowledge a travel grant made by theEley-Webster Trust.     

Daily rhythms in the endocrine glands of drosophila larvae

Zusammenfassung Neurosekretorische Zellen, Corpus allatum, Prothoraxdrüsen- und Fettkörperzellen in Drosophilalarven zeigen tägliche, zweigipflige Schwankungen der Zellkerngrösse. Ein ähnliches Muster konnte auch in den Nucleoli der Prothoraxdrüsen beobachtet werden.     

Caveolated cells observed in the duodenal glands of the white-tailed deer

Summary This study reports the presence of caveolated cells in the duodenal glands of the white-tailed deer. Caveolated cells have not been observed previously in the duodenal glands of other species studied to date.