Objective To explore the reproductive toxicity of 2,4-D butylate to the testis in male mice.Methods Forty-eight ICR male mice were randomly divided into four groups : the control group, and three 2,4-D butylate experimental groups (10, 20, 40 mg/kg), 12 mice in each group.2,4-D butylate was intragastrically administered once a day and six days per week for five weeks .At the end of the exposure, the activities of total antioxidant capacity (T-AOC), Na+ K+-ATPase, Ca+ + Mg+ +-ATPase, lactate dehydrogenase (LDH) and succinate dehydrogenase (SDH) in testis homogenate were measured by spectrophotometry .Results The activity of T-AOC was gradually decreased with the increase of doses, with a significant difference between the high dose group and other groups .The activities of LDH in the moderate and high dose groups were significantly lower than those of the low dose group and control group , and there was a significant difference between the high dose group and moderate dose group .The activities of SDH in the testis was gradually decreased with the increase of the 2,4-D butylate dose, showing significant differences between the high dose group and the moderate dose and control groups , and between the high and moderate dose groups and the low dose group . The activities of Na +K +-ATPase in the moderate and high dose groups were significantly lower than that of the control and low dose group.The activities of Ca++Mg++-ATPase was significantly lower in the experimental groups than that in the control group.Conclusion Exposure to 2,4-D butylate has certain toxic effect on the testicular tissue in male mice .

Diabetes has long been considered a risk factor in implant therapy and impaired wound healing in soft and hard oral tissues. Magnesium has been proved to promote bone healing under normal conditions. Here, we elucidate the mechanism by which Mg²⁺ promotes angiogenesis and osseointegration in diabetic status. We generated a diabetic mice model and demonstrated the alveolar bone healing was compromised, with significantly decreased angiogenesis. We then developed Mg-coating implants with hydrothermal synthesis. These implants successfully improved the vascularization and osseointegration in diabetic status. Mechanically, Mg²⁺ promoted the degradation of Kelch-like ECH-associated protein 1 (Keap1) and the nucleation of nuclear factor erythroid 2-related factor 2 (Nrf2) by up-regulating the expression of sestrin 2 (SESN2) in endothelial cells, thus reducing the elevated levels of oxidative stress in mitochondria and relieving endothelial cell dysfunction under hyperglycemia. Altogether, our data suggested that Mg²⁺ promoted angiogenesis and osseointegration in diabetic mice by regulating endothelial mitochondrial metabolism.
Mice ; Animals ; Kelch-Like ECH-Associated Protein 1/metabolism* ; Magnesium/metabolism* ; Osseointegration ; Diabetes Mellitus, Experimental/metabolism* ; Endothelial Cells/metabolism* ; NF-E2-Related Factor 2/metabolism*