geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Lactate dehydrogenase ec 1.1.1.27 isozyme patterns in cetaceans evidence for a biochemical adaptation to diving


, : Lactate dehydrogenase ec 1.1.1.27 isozyme patterns in cetaceans evidence for a biochemical adaptation to diving. Comparative Biochemistry and Physiology B 53(3): 357-359

LDH [lactate dehydrogenase, E.C. 1.1.1.27] patterns were examined in 4 mysticete [the fin (Balaenoptera physalus), sei (B. borealis), blue (B. musculus) and humpback (Megaptera novae-angliae)] and 1 odontocete the sperm whale (Physeter catodon)] whale species. Odontocete (sperm) whales had a significantly greater proportion of M subunits and a greater total LDH activity in heart tissues than mysticete whales. Mysticete brain tissues had a higher proportion of M subunits than heart tissues. Interspecific differences in the proportion of M subunits in skeletal muscle tissues were not significant. Percentages of M subunits in heart tissues of all species examined were greater than those observed in some non-diving vertebrates. Electrophoretic mobilities of all enzymes examined were identical. Increased M subunit concentrations in heart and brain tissues indicate a biochemical adaptation to diving in whales.

US$29.90


Other references

Hewitt, R.L.; Lolley, D.M.; Adrouny, G.A.; Drapanas, T., 1974: Protective effect of glycogen and glucose on the anoxic arrested heart. Surgery 75(1): 1-10

Budsberg, S.C.; Robinette, J.D.; Farrell, R.K., 1981: Cryotherapy performed on perianal fistulas in dogs. (Washington State University 1976--1980). Thirty-one affected dogs of various breeds underwent cryosurgery between 1976 and 1980. Mean age was 6 years. Most were males, the rest females and castrated dogs. Twenty-five owners were contacted from 3 months to 4 years after treatment. Complet...

Hales, B.F., 1983: Relative mutagenicity and teratogenicity of cyclophosphamide and two of its structural analogs. In this report, cyclophosphamide was compared to two of its structural analogs, 5,5-dimethylcyclophosphamide and diethylcyclophosphamide, with respect to mutagenic and teratogenic activities. Mutagenicity was assessed using Salmonella typhimurium...

Eissmann Lothar, 2002: Quaternary geology of eastern Germany (Saxony, Saxon-Anhalt, South Brandenburg, Thuringia), type area of the Elsterian and Saalian stages in Europe. The characteristic feature of the Quaternary geology of eastern Germany (location map, Fig. 1) is a sequence of more than 50 horizons and complexes of glacial (laminated clays, tills, glaciofluvial sediments) and periglacial (river gravels, gelifl...

Herva, P.; Forsén, R.; Raunio, V., 1970: Experimental biliary pancreatitis in dogs. V. Relationship between the clinical condition and the total proteolytic activity of pancreatic homogenate. Scandinavian Journal of Gastroenterology. Supplement 8: 44-52

Mishima, K.; Nagaya, K.; Hayashi, M.; Lin, S.H., 2005: Towards the realization of the quantum chemistry approach to tunneling photoionization processes in strong laser fields. Based on Keldysh's theory, we investigate the possibility to use the molecular orbital theoretic approach for calculating the tunneling photoionization rates of molecules. As a demonstration, we concentrate on the 1s state of the hydrogen ato...

Tsonev, D.C.alukova, M., 1974: Effect of pre-planting gamma-ray irradiation of bean seeds o n the isoenzyme spectrum of peroxidase. Doklady Comptes rendus: (1) 5-9

Stepniewski, W.; abuda, S., 1989: The influence of 10 days flooding in seven development stages of spring barley on its growth, yield, and N, P, K content and uptake. Part II. Content and uptake of N, P and K. Barley cv. Diva was grown in pots containing 5 kg brown loess soil, and the soil flooded for 10 d at each of 7 growth stages from 1st leaf to milk ripeness. Flooding reduced total nutrient uptake; for N and K, flooding at the 1st node stage gave t...

Ogawa, Y.; Sy, J., 1977: Synthesis of guanosine polyphosphates (pppGpp and ppGpp) and its regulation by aminoacyl-tRNA. Journal of Biochemistry 82(4): 947-953

Lumsden, J.H.; Valli, V.E.; McSherry, B.J., 1975: The hematological response to induced hemolytic anemia in standardbred horses. Haemolytic anaemia was induced in normal standardbred horses; 4 mg/kg of a 2% solution of acetylphenylhydrazine was given i/v on four occasions. In the recovery phase the rate of production of RBC ranged between 7.5 and 14.3 X 109/kg/day and of Hb...