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Horm Metab Res 1980; 12(12): 697-701
DOI: 10.1055/s-2007-999235
© Georg Thieme Verlag, Stuttgart · New York

Adaptive Changes in Uterine Distribution of Lactate Dehydrogenase Isoenzymes During Protein Malnutrition and Steroid Maintained Pregnancy in Rats

R. K. Singh, S. K. Roy
  • Central Drug Research Institute, Chattar Manzil Palace, Lucknow, India
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Publication History

1979

1980

Publication Date:
22 April 2008 (online)

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Summary

The electrophoretic studies revealed that in non-pregnant and pregnant rats fed with protein-free diet (PFD), a significant increase in percentage of LDH1 and LDH2 (H-isozymes) was observed with a concomitant decrease in concentration of LDH4 and LDH5 (M-isozymes). The changes in LDH3 were not significant. Further, during protein deficiency heart-type activity (H-subunits) was increased markedly with a parallel decline in muscle-type activity; thus resulting in an increase in H/M ratio or analogue ratio (A.R.). However, the decrease in A.R. (below 2.00), observed during normal and steroid maintained pregnancy was due to higher muscle-type than heart-type activity. These observations suggest that protein malnutrition in rats favours a metabolic shift from anaerobic state to aerobic predominance in the uterus. The physiological significance of these adaptations has been discussed.

Key-Words

Protein Malnutrition - Steroid Maintained Pregnancy - LDH Isoenzymes - Rat Uterus

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