Author Keywords: Temperature acclimation; thermal resistance; ciliary activity; acetylcholine; choline; tetramethylammonium; atropine; physostigmine; denervation supersensitivity; gill tissue; Anodonta anatina anatina; Anodonta cygnea cellensis 相似文献
排序方式: 共有5条查询结果,搜索用时 15 毫秒
1
1.
2.
1. 1.|The thermal resistance of the activity of frontal cilia in the median gills of the fresh water mussel Anodonta anatina was studied.
2. 2.|The resistance acclimation appeared in 2 days in the gills of intact animals, but not in the isolated gills kept at 4, 14 and 24°C, for between 1 to 3 days.
3. 3.|Warm-acclimation increased the ACh sensitivity of the gills of intact mussels.
4. 4.|Isolation of the gills enhanced the thermal resistance.
5. 5.|ACh, choline and tetramethylammonium enhanced the thermal resistance in the isolated gills. whereas atropine and physostigmine diminished it.
6. 6.|It is concluded that in A. anatina the control if the thermal resistance is probably neural.
3.
Sulfur-Specific Microbial Desulfurization of Sterically Hindered Analogs of Dibenzothiophene 总被引:6,自引:6,他引:6 下载免费PDF全文
Dibenzothiophenes (DBTs) bearing alkyl substitutions adjacent to the sulfur atom, such as 4,6-diethyldibenzothiophene (4,6-DEDBT), are referred to as sterically hindered with regard to access to the sulfur moiety. By using enrichment cultures with 4,6-DEDBT as the sole sulfur source, bacterial isolates which selectively remove sulfur from sterically hindered DBTs were obtained. The isolates were tentatively identified as Arthrobacter species. 4,6-DEDBT sulfone was shown to be an intermediate in the 4,6-DEDBT desulfurization pathway, and 2-hydroxy-3,3(prm1)-diethylbiphenyl (HDEBP) was identified as the sulfur-free end product. 相似文献
4.
K Y Lagerspetz K E Senius 《Comparative biochemistry and physiology. B, Comparative biochemistry》1979,62(3):291-293
1. Microsomal preparations from the gills of the freshwater mussel anodonta cygnea cellensis show Mg2+ -dependent Na+ - or K+ -stimulated ATPase activity, which is not inhibited by ouabain. 2. Na+ - or Ka+ -ATPase activity is decreased by Ca2+, acetylcholine, choline, and tetramethylammonium, but slightly increased by ethyl alcohol. 3. It is tentatively suggested that Na+ - or K+ -ATPase is involved in the mechanism of active monovalent cation uptake through the gills of freshwater mussels. 相似文献
5.
1