ABSTRACT
Objective: To investigate the analgesic substances in the aerial part of Urtica fissa (Urticae Fissae Herba), commonly used for rheumatoid and rheumatism arthritis. Methods: The analgesic constituents were isolated with the active guidance of hot plate and acetic acid writhing models, and identified by comprehensive spectroscopic analysis. Results: Thirteen alkaloids (1–13), two lignans (14, 15), and three amides (16–18) were isolated from the active fractions. Among them, compound 1 was a new alkaloid, and compound 6 was a new natural product. The activity evaluation in vivo indicated that various pyrrole alkaloids (1, 3, 6, and 12) possessed significant analgesic activities, they could significantly inhibit the mice pain response induced by acetic acid and hot plate at the dosage of 2 mg/kg BW. Conclusion: The study revealed that the pyrrole alkaloids played important roles in the analgesic activities of Urticae Fissae Herba.
ABSTRACT
Schizophrenia is a chronic devastating psychiatric disorder,which severely damages pub-lic mental health. The pathophysiological mechanism of schizophrenia is complex and the etiology of schizo-phrenia is still unclear. Epidemiological study,twins study and family study show that genetic factors play a substantial part in the process of schizophrenia. Previous research indicates that there is a close association between microRNA-137 and schizophrenia,and that the ablation of microRNA-137 significantly affects clini-cal symptoms and prognosis of patients with schizophrenia. So it highlights the relationship between microR-NA-137 and schizophrenia,which reveals its special role in the etiological mechanism of schizophrenia,and may provides new perspective about the treatment of patients in schizophrenia.
ABSTRACT
<p><b>OBJECTIVE</b>To study the identification method of Syngnathus and its adulterants.</p><p><b>METHOD</b>Random amplified polymorphic DNA (RAPD) was used to construct a dendrogram by UPGMA method based on Nei & Li's coefficient and a genetic affinity pattern for Syngnathus acus, Solenognathus hardwickii, Syngnathoides biaculeatus, Trachyrhamphus serratus, Halicampus koilomatodon, Microphis boaja.</p><p><b>RESULT</b>Four primers, LJ04, LJ09, LJ16 and LJ19, from 18 random primers were used in the dendrogram which can differentiate Syngnathus in genus level and showed a great consistence with the appearance identification. The genetic affinity pattern based on primers LJ09 and LJ19 could be used to identify Syngnathus from its adulterants.</p><p><b>CONCLUSION</b>RAPD is suitable to identify Syngnathus and its adulterants.</p>