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Related Experiment Videos

TM rats: a model for platelet storage pool deficiency

S Hamada1, T Nishikawa, N Yokoi

  • 1Central Research Laboratories, SS Pharmaceutical Co., Ltd., Chiba, Japan.

Experimental Animals
|July 1, 1997
PubMed
Summary
This summary is machine-generated.

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The TM rat strain exhibits platelet storage pool deficiency (SPD), characterized by prolonged bleeding and low serotonin, similar to Fawn hooded rats. This genetic model offers a new tool for studying platelet disorders.

Area of Science:

  • Genetics
  • Hematology
  • Animal Models

Background:

  • Fawn hooded (FH) rats are established models for platelet storage pool deficiency (SPD).
  • The TM rat strain shares a similar coat pattern with FH rats, suggesting potential shared genetic traits.
  • Investigating TM rats can expand the available models for studying platelet disorders.

Purpose of the Study:

  • To determine if the TM rat strain exhibits platelet storage pool deficiency (SPD) comparable to the FH rat strain.
  • To investigate the physiological and genetic characteristics of the TM rat strain related to platelet function.

Main Methods:

  • Comparative analysis of bleeding time, blood serotonin levels, coagulation time, and platelet counts between TM and FH rats.
  • Genetic analysis to identify the gene responsible for coat color and its potential link to SPD.

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Main Results:

  • TM rats displayed prolonged bleeding times and reduced blood serotonin levels, indicative of SPD.
  • Coagulation time and platelet counts in TM rats were within normal ranges.
  • The coat color of TM rats is linked to the red-eyed dilution gene, similar to FH rats.

Conclusions:

  • The TM rat strain presents with platelet storage pool deficiency (SPD), potentially due to a pleiotropic effect of the red-eyed dilution gene.
  • Despite phenotypic similarities, the TM and FH rat strains possess distinct genetic backgrounds.
  • The TM rat strain serves as a valuable, independently developed model for platelet storage pool deficiency (SPD).