Netrin-3 Suppresses Diabetic Neuropathic Pain by Gating the Intra-epidermal Sprouting of Sensory Axons / 神经科学通报·英文版

Diabetic neuropathic pain (DNP) is the most common disabling complication of diabetes. Emerging evidence has linked the pathogenesis of DNP to the aberrant sprouting of sensory axons into the epidermal area; however, the underlying molecular events remain poorly understood. Here we found that an axon guidance molecule, Netrin-3 (Ntn-3), was expressed in the sensory neurons of mouse dorsal root ganglia (DRGs), and downregulation of Ntn-3 expression was highly correlated with the severity of DNP in a diabetic mouse model. Genetic ablation of Ntn-3 increased the intra-epidermal sprouting of sensory axons and worsened the DNP in diabetic mice. In contrast, the elevation of Ntn-3 levels in DRGs significantly inhibited the intra-epidermal axon sprouting and alleviated DNP in diabetic mice. In conclusion, our studies identified Ntn-3 as an important regulator of DNP pathogenesis by gating the aberrant sprouting of sensory axons, indicating that Ntn-3 is a potential druggable target for DNP treatment.

Clinical analysis of laparoscopic salpingotomy combined with pituitrin in the treatment of tubal pregnancy / 中国基层医药

Objective To investigate clinical effects of laparoscopic salpingotomy combined with pituitrin in the treatment of tubal pregnancy.Methods 160 children with tubal pregnancy were chosen in our hospital in the period and randomly divided into two groups including control group (80 children)with laparoscopic salpingotomy treatment and treatment group (80 children)with pituitrin adjunct treatment before operation on the basis of control group.And the operation time,intraoperative bleeding volume,postoperative body temperature,hospitalization time,the retention rate of fallopian tube,fallopian tube patency rate,persistent ectopic pregnancy rate,intrauterine pregnancy rate and fertility rate of both groups were compared.Results The operation time,intraoperative bleeding volume, postoperative body temperature and hospitalization time of the control group were separately (20.33 ±2.70)min, (52.76 ±7.42)mL,(37.52 ±0.54)℃ and (7.56 ±1.98)d;the operation time,intraoperative bleeding volume, postoperative body temperature and hospitalization time of the treatment group were separately (8.94 ±1.61)min, (16.33 ±2.15)mL,(37.46 ±0.50)℃and (5.91 ±1.42)d;the operation time,intraoperative bleeding volume and hospitalization time of the treatment group were significantly better than those of the control group (t=2.26,2.60, 2.08,all P0.05).The retention rate of fallopian tube and fallopian tube patency rate of the control group were sepa-rately 75.00% (60/80)and 52.50%(42/80);the retention rate of fallopian tube and fallopian tube patency rate of the control group were separately 93.75% (75/80)and 81.25% (65/80);the retention rate of fallopian tube and fallopian tube patency rate of treatment group were significantly better than those of the control group (χ2 =9.71, 10.14,all P0.05);the intrauterine pregnancy rate and fertility rate of treatment group were significant-ly better than those of the control group (χ2 =11.84,12.52,all P<0.05).Conclusion Laparoscopic salpingotomy combined with pituitrin in the treatment of tubal pregnancy can efficiently decrease operation time the amount of bleeding,shorten hospitalization time and be helpful to improve the reproductive outcome.