Liver biopsies from T-treated hypogonadal patients showed significantly lower intrahepatic triglyceride content, macrovesicular lipid accumulation and NAS score for steatosis, as compared to untreated-hypogonadal subjects. In vivo testosterone treatment enhanced the insulin-induced uptake of 3H-2-deoxy-d-glucose in hPADs. Human preadipocytes (hPADs) relative mRNA expression of genes related to brown, beige and white adipogenesis, lipid catabolism and handling, insulin signaling and mitochondrial life cycle. The mRNA expression of these genes, in hPADs originating from the T treatment group, resulted often even significantly higher than the levels observed in hPADs derived from the eugonadal group (Fig. 7). Visceral adipose tissue relative mRNA expression of genes related to brown, beige and white adipogenesis, lipid catabolism, insulin signaling and mitochondrial life cycle. A significant increase was observed for mRNA expression of key enzymes related to the balance between hepatic lipid accumulation and β-oxidation, such as FAS, or related to ketogenesis, including HMGCS. Intrahepatic triglyceride (TG) levels obtained from liver biopsies collected during surgical procedure resulted in being significantly higher in the hypogonadal group, when compared to eugonadal subjects (Fig. 4 panel a; p 4 panel a; p 4 panel b; p 4 panel c; p 4 panels d, e, respectively).
For example, in macrophages, such as Kupffer cells, the PPP is required to sustain superoxide anion production , a key component for the phagocytic oxidative burst , which is a tool for destroying pathogens. Although glycolysis is less energetically favorable than oxidative phosphorylation (OXPHOS) , it carries a number of advantages for immune cells. However, the mechanisms by which these CXCR3+ TH17 cells exacerbate disease remain unclear. It was recently demonstrated that IL-17A and IL-17F are drivers of adipocyte lipid usage in adipocytes during infection and, moreover, promote infection-induced cachexia , suggesting that it may drive lipid usage in other cell types, including hepatocytes. TH17 cells are CD4+ cells that express the transcription factor RORγt (retinoid orphan receptor gamma t) and RORα, and are characterized by secretion of IL-17A and IL-17F.
Even when carbohydrates are not ingested after exercise, glycogen repletion can occur at slow rates (1–2 mmol/kg wet weight/h) from gluconeogenesis70 and the conversion of lactate to glucose.71 If postexercise carbohydrate supplementation is not maintained, GLUT4 transporters are removed from the membrane after 30–60 minutes.41 In short, the reduction in muscle glycogen stores that occurs during exercise is a major driving factor for subsequent glycogenesis.69 The glucose molecules from the blood and those released from glycogen are oxidized to produce the adenosine triphosphate (ATP) molecules required to sustain muscle contraction. Once inside the muscle cell, glucose molecules are readied for inclusion into glycogen. Glycogen stores in liver and muscle decrease during physical activity; the longer and more intense the activity, the greater the rate and overall reduction of glycogen stores.
Techniques such as training with high muscle glycogen stores but sleeping and then training the next morning with low muscle glycogen stores have been shown in some studies to enhance glycogen storage and performance. When rapid glycogen resynthesis is required, consuming 0.5–0.6 g/kg BW of high-glycemic carbohydrates every 30 minutes (0.23–0.28 g/lb BW/30 min) for 2–4 hours (or until the next full meal) will sustain high rates of muscle glycogen synthesis. The additional protein intake might also help facilitate glycogen synthesis, especially when carbohydrate intake is low.65 As a result, older athletes are advised to consume 35–40 g of high-quality proteins in addition to sufficient carbohydrate to maximally stimulate muscle protein synthesis after exercise. It is clear that adequate consumption of proteins stimulates muscle protein synthesis during rest,129 although consuming proteins during exercise does not appear to benefit performance or immune function or reduce muscle damage.130,131 However, it is possible to maximize the rate of short-term muscle glycogen repletion so that athletes can replenish more muscle glycogen than might otherwise be possible.
On the other hand, some studies suggest that testosterone may help improve liver function in certain people with obesity or diabetes. That’s why regular checkups and lab tests are needed for anyone taking testosterone therapy. This can place stress on the liver and may cause enzyme levels to rise.
GPER and its roles in energy homeostasis are currently under intensive investigation; however, there is less evidence about the roles of GPER in the liver compared with classic nuclear ERs. GPER and its roles in energy homeostasis are currently under intensive investigation; however, there is less evidence about the role of GPER in the liver compared with classic nuclear estrogen receptors. All these above results provide a comprehensive explanation for how chronic androgen replacement can decrease serum levels of cholesterol and LDL via enhancing liver cholesterol uptake and via suppressing cholesterol removal, which in turn increases liver cholesterol accumulation . Upregulation of GLUT2 plays a more critical role in regulating glucose export out of, rather than regulating glucose import into, the liver. GLUT2 directionally transports glucose across liver cell plasma membrane to maintain glucose homeostasis, as mentioned above in Section 2.3. Abnormally high level of androgens increases lipid deposition in the liver in females.
Lipoprotein lipase required for fatty acid uptake was only reduced in subcutaneous adipose tissue; enzymes of fatty acid synthesis were increased in liver and subcutaneous tissue. Testicular feminised mice displayed significantly reduced GLUT4 in muscle and glycolytic enzymes in muscle, liver and abdominal subcutaneous but not visceral adipose tissue. The testicular feminised mouse (non-functional androgen receptor and low testosterone) develops fatty liver and aortic lipid streaks on a high-fat diet, whereas androgen-replete XY littermate controls do not. Androgens and nuclear AR have been shown to increase insulin receptor, decrease lipogenesis, and promote cholesterol storage in the liver. Estrogens also actively participate in maintaining lipid and cholesterol balance and play protective roles against hepatic lipid accumulation, via suppressing lipogenesis, lipid uptake, and cholesterol synthesis and promoting lipolysis and cholesterol removal. Estrogens seem to play protective roles against hepatic fat accumulation via suppressing lipogenesis and gluconeogenesis and promoting lipolysis and glycogen storage. The liver is the largest organ in the body that regulates lipid, glucose, and cholesterol homeostasis.
Additionally, levels of ERs are maintained as a stable level across the estrous cycles of female rats . ER-β is less abundant in liver cells than ER-α 19, 20 and GPER (unpublished observation). All these nuclear and membrane ER subtypes are expressed in the livers of male and female humans and rodents, but at a lower level compared with reproductive organs such as uterus, prostate, testis, ovary, and breast 16–18. The prevalence of NAFLD varies among ethnicities, with the highest prevalence in Hispanics, correlated with the high prevalence of obesity and insulin resistance in this ethnic group, compared to whites and blacks . Epidemiological studies show sex difference in the prevalence in fatty liver disease and suggest that sex hormones may play vital roles in regulating hepatic steatosis.

Gender: Female

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