Sarcopenia Models and Efficacy Services

Sarcopenia is defined as the progressive loss of muscle mass and function resulting from aging. This condition is associated with increased incidence of falls and injuries, cardiac disease, respiratory disease, and cognitive impairment, and is closely linked to frailty, poor quality of life, and increased mortality. So far, there is no FDA approved pharmacological therapy for sarcopenia. Currently, pre-clinical animal models could be divided into four types: (1) aged animals; (2) genetically modified animals; (3) intervention models; (4) induced disuse models.


GemPharmatech has developed several sarcopenia mouse models, including a dexamethasone -induced sarcopenia model, CVMD related cachexia-induced sarcopenia model, and MSTN over-expression induced sarcopenia model.


1. Dexamethasone-induced sarcopenia model


(1) Dexamethasone treatment slightly affected body weight, but significantly decreased lean mass of B6J mice


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Figure 1. The growth curve of the animals during the study period and the body composition of animals 14 days post 1st Dexamethasone injection. Data were presented as Mean±SD, N=6~8, ****, p < 0.0001 by one-way ANOVA with Dunnett’s pot-hoc test.


(2) Dexamethasone treatment decreases exercise performance of C57Bl/6JGpt mice


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Figure 2. Exercise performance of Vehicle or Dexamethasone treated animals was measured by treadmill. Data presented as Mean±SD, N=6~8, *, p < 0.05 by one-way ANOVA with Dunnett’s pot-hoc test.

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