This study is to investigate the effects of aqueous extract of Schisandra chinensis Baill (WWZ), kadsurin, schisandrin A, schisandrin B and schisandrol B on rat hepatic CYP3A. Rats received a daily gavage of aqueous extract of WWZ for different times. The livers were harvested after gavage and subjected to microsome preparation. Microsomal CYP3A activity was determined by measuring the amount of the metabolite of testosterone (6 beta-hydroxytestosterone) with HPLC. Aqueous extract of WWZ, kadsurin and schisandrin A were incubated with microsomes obtained from rat. Microsomal CYP3A activity was determined by HPLC. Primary hepatocytes were separated and extracted from rat, then were treated with aqueous extract of WWZ, schisandrin A, schisandrin B and schisandrol B. Then, the expression of CYP3A1 mRNA was analyzed by RT-PCR. As for the in vivo assay, aqueous extract of WWZ significantly inhibited the enzyme activity of CYP3A after 12 h gavage. The inhibitory effect was converted to inductive effect after 3-day gavage. Aqueous extract of WWZ could induce the enzyme activity of CYP3A after 6-day gavage. Aqueous extract of WWZ and kadsurin showed a dose-dependent inhibition of CYP3A (IC50 of 487.8 microg mL(-1) and 6.2 micromol L(-1), separately). In rat primary hepatocytes, aqueous extract of WWZ (2.5 mg mL(-1)), schisandrin A (0.1 micromol L(-1)), schisandrin B (0.1 micromol L(-1)) and schisandrol B (10 micromol L(-1)) increased significantly the expression of CYP3A1 mRNA by 23%, 55%, 42% and 27%, respectively. Aqueous extract of WWZ could show dual effect on the enzyme activity of CYP3A in rat in vivo. Meanwhile, kadsurin showed a dose-dependent inhibition of the enzyme activity of hepatic CYP3A in vitro. And schisandrin A, schisandrin B and schisandrol B showed significant inductive effect on the expression of rat CYP3A1 mRNA.
Animals ; Cyclooctanes ; administration & dosage ; isolation & purification ; pharmacology ; Cytochrome P-450 CYP3A ; genetics ; metabolism ; Dioxoles ; administration & dosage ; isolation & purification ; pharmacology ; Dose-Response Relationship, Drug ; Drugs, Chinese Herbal ; administration & dosage ; isolation & purification ; pharmacology ; Hepatocytes ; drug effects ; enzymology ; Inhibitory Concentration 50 ; Lignans ; administration & dosage ; isolation & purification ; pharmacology ; Male ; Microsomes, Liver ; enzymology ; Plants, Medicinal ; chemistry ; Polycyclic Compounds ; administration & dosage ; isolation & purification ; pharmacology ; RNA, Messenger ; metabolism ; Rats ; Rats, Sprague-Dawley ; Schisandra ; chemistry

OBJECTIVE: To investigate the correlation between male infertility and Y chromosome microdeletions of azoospermia factor (AZF) regions, and to establish a reliable genetic diagnosis in idiopathic infertile male patients with azoospermia or severe oligozoospermia. METHODS: Multiplex PCR amplification of 6 sequence-tagged sites in AZF regions of the Y chromosome was examined among 100 normal karyotype male patients with azoospermia or oligozoospermia. RESULTS: Four patients (4%) had Y chromosome microdeletions, the microdeletions of 3 patients were idiopathic azoospermic and those of the other 1 patient were secretory azoospermia. CONCLUSION The PCR-based Y chromosome microdeletion screening is simple and effective in the diagnosis of patients with severe male infertility. Microdeletion of Y chromosome is one of the major causes of severe dyszooospermia.
Adult ; Azoospermia ; genetics ; Chromosome Deletion ; Chromosomes, Human, Y ; genetics ; Genetic Loci ; Humans ; Infertility, Male ; diagnosis ; genetics ; Karyotyping ; Male ; Oligospermia ; genetics ; Seminal Plasma Proteins ; genetics

Objective To summarize clinical experience and explore application value of endoscopic clipping with histoacryl using in management of type 2 gastroesophageal varices. Methods Clinical data of 30 patients with type 2 gastroesophageal varices patients (including acute hemorrhage and primary prevention) from May 2015 to December 2016 were collected. Then evaluate therapeutic effect and safety of endoscopic clipping adjuvant therapy. Results Average glue dosage was (1.46 ± 0.70) ml, average using of clips were (5 ~ 6), and intraoperative needle pulling hemorrhage occurred in 2 cases. 14 patients (46.7%) underwent endoscopic re-examination, 3 patients (10.0%) achieved varicose vein elimination, 11 cases (36.7%) remained residual. Rebleeding occurred in 4 cases (13.3%), and 2 cases died (6.7%), one because of postoperative hematemesis and hemorrhagic shock, the other one died of spontaneous peritonitis and septic shock. For general curative effect, 2 cases (6.7%) were healed, 22 cases (73.3%) were improved, and 6 cases were unhealed (20.0%, 4 cases occurred rebleeding, 2 cases died); 17 cases underwent CT portal venograpy, abnormal embolization was not found in any patients, glue extrusion bleeding occurred in 1 case (3.3%), no patients had severe postoperative complications. Conclusion Endoscopic clipping with histoacryl can be used in the prevention and treatment of type 2 gastroesophageal varices to improve the treatment effect and reduce postoperative bleeding risk, may have good clinical practice value.