Study on suitable distribution areas of Notopterygium incisum in Sichuan province based on remote sensing and GIS / 中国中药杂志

Notopterygium incisum is the important medicinal materials of the Tibetan-Qiang medical system in China, also one of the rare and endangered medicinal materials in the Plateau areas in the meantime. Taking the planting of in Sichuan province as an example, research on the N. incisum in Sichuan utilize remote sensing and GIS techniques, bind growth environment factor, including height factor, average annual precipitation, average annual temperature, forest information, were chosen according to habitat conditions. And combine field measurement to verify. The results indicate that N. incisum resources in Sichuan province were mainly distributed in the alpine valley and the northwest of the plateau, which suitability distribution areas of 4145 km2 approximately and accounting for 2% of the total area. Suitability areas accounting for more than 2% of the respective total area in Heishui county, Lixian county, Xiaojin county, Kangding county, ect. According to the field investigation and the related document information record, drawn that the suitability distribution based on RS and GIS were corresponded with the actual distribution areas of N. incisum resources. It's feasible to divide the suitability distribution area of N. incisum using RS and GIS, which will provide a scientific basis for a comprehensive investigation of the distribution as well as its rational exploitation and protection.

Increased nitric oxide levels in peritoneal fluids of minor-endometriosis patients and its relation to IVF-ET outcomes / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To investigate the role of nitric oxide (NO) in the pathogenesis of early endometriosis-associated infertility.</p><p><b>METHODS</b>The volume of peritoneal fluids was recorded and the concentration of NO in peritoneal fluid and serum was measured with a fluorescence method using 4, 5-diaminofluorescein (DAF-2) as an indicator, in 60 patients with early endometriosis-associated infertility ( endometriosis group), 60 patients with tubal infertility (tubal infertility group) and 20 patients without infertility (control group). The IVF-ET outcomes between patients with endometriosis and tubal infertility were compared.</p><p><b>RESULT</b>The volume of peritoneal fluids from endometriosis group patients increased significantly compared with that in tubal infertility group patients and control groups. The concentration of NO in peritoneal fluid of the control group,the tubal infertility group and the endometriosis group was 9.98, 13.76 and 20.72, respectively (P<0.017). Furthermore the concentration of NO in serum of the patients of control group,tubal infertility group and endometriosis group was 12.25, 13.00, 13.60, respectively; there were no significant differences among these three groups. There were no significant differences in implantation rate, pregnancy rate and abortion rate of IVF-ET between endometriosis group patients and tubal infertility group patients. However, the fertilization rate was significantly lower in endometriosis group patients than that in tubal infertility group patients.</p><p><b>CONCLUSION</b>Changes of nitric oxide in peritoneal fluids may play an important role in the pathogenesis of early endometriosis-associated infertility and IVF-ET may serve as an alternative method for this type of infertility.</p>