However, the superior bioavailability of properly stored nasal sprays often justifies the additional handling considerations
Aim for high protein, good fiber, and low added sugars
Because of the close relationship between risk factors in human metabolism and the expression of GLP-1R in the musculoskeletal system, GLP-1RAs may have great potential in the treatment of many diseases of the musculoskeletal system.15,272 GLP-1RAs and joint disordersGLP-1RAs in OA GLP-1R expression was detected via immunohistochemistry in articular chondrocytes from both normal and osteoarthritic individuals.273 The primary outcome of GLP-1R expression involves suppressing the release of cytokines into the synovial fluid, leading to a reduction in inflammation.274,275 This, in turn, diminishes additional downstream effects, including oxidative stress, the secretion of pro-degradative substances, modifications to cell phenotype (hypertrophy, M1/M2 macrophage phenotype, fibrosis), and damage or deterioration of joint cells (apoptosis, senescence).15,276 The activation of GLP-1R is linked to decreased NF-B pathway activity Treatment with GLP-1RAs can effectively mitigate chondrocyte apoptosis caused by endoplasmic reticulum stress and alleviate the associated inflammatory response.277,278,279,280 This effect is accomplished through the inhibition of JNK, NF-B, and other relevant signaling pathways.273 Moreover, GLP-1RAs could decelerate the progression of OA and mitigate pathological damage in a rat OA model.273 In addition, in a rat model of inflammatory OA induced by monoiodoacetic acid (MIA), researchers have shown that the activation of GLP-1R triggers the PKA/CREB signaling pathway, leading to a reduction in cartilage inflammation.281 Inflammation in OA is closely related to the activation of macrophages.282,283 These cells accumulate in the synovial membrane and subchondral bone, releasing pro-inflammatory cytokines such as TNF-, IL-1, and IL-6, which promote the degradation of joint cartilage and the inflammatory response.284,285,286 Macrophages express GLP-1Rs, which are involved in regulating their inflammatory responses
In each case, the honest framing is that the evidence is preliminary, the combination is investigational , and robust human clinical trial data specific to these uses are limited
