Expression of apoptosis regulatory proteins in the skeletal muscle of tumor-bearing rabbits compared with diet-restricted rabbits
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Study of apoptosis regulatory proteins in skeletal muscle of tumor-bearing rabbits; the object is cachexia biology.
The study examines apoptosis in tumor-bearing rabbits, not research practice.
Biomedical study of apoptosis proteins in tumor-bearing rabbits; laboratory biology.
Résumé
The mechanism of body weight loss in the tumor-bearing state is still unclear. In this study, we investigated expressions of apoptosis regulatory proteins in the skeletal muscle of tumor-bearing and diet-restricted rabbits, and tried to evaluate the differences between the two groups. The apoptotic index (AI) in the tumor-bearing group was 28.1+/-2.84 on day 10. By day 20, many more apoptotic cells were found (AI: 40.5+/-3.20), but then after day 20 their numbers gradually decreased (AI: 9.67+/-2.22 on day 30 and 0.93+/-0.96 on day 40). By contrast, no apoptotic cells were detected in the diet-restricted group at any of the times examined. Bcl-2 immunoreactivity was either not detected at all or only weakly observed in both groups. By contrast, Bax expression increased gradually after implantation in the tumor-bearing group. Bax expression in skeletal muscle cell was graded (moderate) 10 days after tumor implantation, and (high) by day 20, in 2 of the 5 tumor-bearing rabbits. After day 20, however, Bax immunoreactivity decreased continuously in the tumor-bearing group. By contrast, hardly any Bax-immuno-positive cells were detected in the diet-restricted group. These results suggest that loss of body weight in the tumor-bearing group is different from that in the diet-restricted group, and is related to apoptosis of skeletal muscles.
Conservé avec la notice de tri, où il sert de preuve aux étiquettes ci-dessus.
La notice
- Revue
- International Journal of Molecular Medicine
- Thématique
- Rabbits: Nutrition, Reproduction, Health
- Domaine
- Agricultural and Biological Sciences
- Établissements canadiens
- —
- Organismes subventionnaires
- Terry Fox FoundationMassachusetts General Hospital
- Mots-clés
- ApoptosisOncogeneSkeletal muscleMolecular medicineBiologyBAX ProteinCell cycleInternal medicineEndocrinologyGroup AAndrologyPathologyGeneProtein expressionMedicineBiochemistry
- Résumé présent dans OpenAlex
- oui