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["Medium weight molecules" as endogenous modulators of stress]
Abstract:
Blood fractions of medium-weight molecules (MWM) were isolated from healthy dogs and dogs exposed to burn injury stress (24 postburn hours). MWM caused a profound modulation of restriction-induced beta-adrenergic stress manifestations (lipolytic and glycogenolytic responses) in rats. Some MM fractions suppressed thymic hypoplasia, gastric ulceration and mediated bone marrow neutrophilic elimination in immobilized rats. Latency of insulin- induced coma was also mediated by MM. The MM fractions attenuating beta-adrenergic stress manifestations were capable of potentiating bone marrow neutrophilic depletion in immobilized rats. There was a relationship between the ability of MM to reduce thymic hypoplasia and potentiate insulin sensitivity. The findings are discussed from the biological point of view as to the stress-mediating MM properties.
Insights
Medium-weight molecules (MWM) from stressed dogs modulated stress responses in rats, reducing thymic hypoplasia and improving insulin sensitivity. These blood fractions offer insights into biological stress mediation.
Area of Science:
- Biochemistry
- Physiology
- Immunology
Context:
- Burn injury induces significant physiological stress.
- Beta-adrenergic stress responses include lipolytic and glycogenolytic effects.
- Medium-weight molecules (MWM) are blood components.
Purpose:
- To investigate the effects of MWM from stressed dogs on stress responses in rats.
- To determine if MWM can modulate beta-adrenergic stress manifestations.
- To explore MWM's potential role in mitigating stress-induced physiological changes.
Summary:
- Blood fractions of medium-weight molecules (MWM) were isolated from healthy and burn-injured dogs.
- MWM significantly modulated beta-adrenergic stress responses in rats, including lipolytic and glycogenolytic effects.
- Specific MWM fractions suppressed thymic hypoplasia, gastric ulceration, and mediated neutrophilic elimination in immobilized rats, also affecting insulin sensitivity.
Impact:
- Findings suggest MWM possess stress-mediating properties.
- MWM may offer therapeutic potential for managing stress-related conditions.
- This research provides a biological perspective on stress-mediating molecules.