{"title":"Changes in heart and skeletal muscle cytrochrome oxidase activity during anaerobiosis in the freshwater tutrle Pseudemys scripta elegans","authors":"Lawerence M Simon, Eugene D Robin","doi":"10.1016/0010-406X(70)90572-4","DOIUrl":null,"url":null,"abstract":"<div><p></p><ul><li><span>1.</span><span><p>1. Changes in cytochrome oxidase activities following prolonged oxygen depletion induced by a maintained underwater “drive” were investigated in the pond turtle (<em>Pseudemys scripta elegans</em>).</p></span></li><li><span>2.</span><span><p>2. A marked decrease in both heart and skeletal muscle cytochrome oxidase activity was seen following 48 hr of total anaerobiosis. Heart: Control = 4·05 ± 0·86; diving = 3·07 ± 0·74; <em>P</em> = < 0·05. Skeletal muscle: Control = 0·90 ± 0·24; diving = 0·44 ± 0·13; <em>P</em> < 0·01.</p></span></li><li><span>3.</span><span><p>3. This decrease may be a consequence of a need for molecualr oxygen in porphyrin biosynthesis, may subserve increased metabolic efficiency, or may be a reflection of the lowered (zero) mitochondrial oxgyen consumption.</p></span></li></ul></div>","PeriodicalId":78189,"journal":{"name":"Comparative biochemistry and physiology","volume":"37 3","pages":"Pages 437-443"},"PeriodicalIF":0.0000,"publicationDate":"1970-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0010-406X(70)90572-4","citationCount":"15","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Comparative biochemistry and physiology","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0010406X70905724","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 15
Abstract
1.
1. Changes in cytochrome oxidase activities following prolonged oxygen depletion induced by a maintained underwater “drive” were investigated in the pond turtle (Pseudemys scripta elegans).
2.
2. A marked decrease in both heart and skeletal muscle cytochrome oxidase activity was seen following 48 hr of total anaerobiosis. Heart: Control = 4·05 ± 0·86; diving = 3·07 ± 0·74; P = < 0·05. Skeletal muscle: Control = 0·90 ± 0·24; diving = 0·44 ± 0·13; P < 0·01.
3.
3. This decrease may be a consequence of a need for molecualr oxygen in porphyrin biosynthesis, may subserve increased metabolic efficiency, or may be a reflection of the lowered (zero) mitochondrial oxgyen consumption.
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