About 10%-15% of azoospermic and 5%-10% of severely oligozoospermic men with idiopathic infertility have Yq microdeletions which could be transmitted to their male offspring by means of ICSI. We review present studies about Yq microdeletions including incidence, region, correlations between genotype and phenotype, the mechanism of Yq deletions and try to further understand the cause of male infertility as well as provide a new way for diagnosis and therapy.
Chromosome Deletion ; Chromosome Mapping ; Chromosomes, Human, Y ; genetics ; Genotype ; Humans ; Infertility, Male ; genetics ; pathology ; Male ; Phenotype ; Sex Chromosome Aberrations

In order to provide scientific basics for exploitation and sufficient application of Dendrobium officinale leaves resources, the phenol-sulfuric acid method was applied to determine the polysaccharide content. The monosaccharides were derivated by PMP and the derivatives were identified by HPLC-DAD-ESI-MS(n) and the contents of mannose and glucose were determined simultaneously. Similarity evaluation system for chromatographic fingerprint of traditional Chinese medicine (2004A) was employed to generate the mean chromatogram and similarity analysis of the samples was carried out. The results demonstrated that polysaccharide content, monosaccharide compositions and composition ratio had an obvious difference between stems and leaves. The polysaccharide content of stems was higher than that of leaves. Monosaccharide composition in leaf was significantly different from that in stem. The polysaccharide from stems was composed of mannose and glucose, however the polysaccharide of leaves was acid heteropolysaccharide and was mainly composed of five monosaccharides, including mannose, galacturonic acid, glucose, galactose and arabinose. The similarity value of the 14 batches was above 0.9, indicating that similarity of fingerprints among different samples was high. The study can provide evidence for expanding the medicinal parts of D. officinale.
Chromatography, High Pressure Liquid ; Dendrobium ; chemistry ; Mass Spectrometry ; Plant Extracts ; chemistry ; Plant Leaves ; chemistry ; Plant Stems ; chemistry ; Polysaccharides ; chemistry

Objective To explore the culturing strategies,curiculum provision,courses conferring methods,teaching effects as well as the associated managerial evaluations on the basis of Sino-French cooperation on medical education with the hope of summarizing helpful suggestions to Sino-Foreign cooperation on medical education. Methods The achievements of our Sino-French cooperation on medical education were analyzed and compared in the teaching models,culturing strategies along with courses conferring processes among seven-year medical students from both English-teaching and French-teaching classes. Results Our Sino-French cooperation on medical education was featured in its distinct culturing purposes and effective teaching model.Its scientifically formulated culturing strategy found its full expression in French-teaching atmosphere.The Sino-French cooperation on medical education was consistently welcomed and favorably recommended by both faculties and students. Conclusion The Sino-French cooperation on medical education has not only gained precious experience in culturing the cutting-edge medical talents with the international visions but also conduced to fulfill the goal to establish a modernized and internationalized medical school.

Abdomen ; Child, Preschool ; Female ; Human Growth Hormone ; deficiency ; Humans ; Lipodystrophy ; etiology

SUMMARY Objective:To investigate the influence of cryoprotectants and cooling rates in vitrificationmethod on the spindles of rabbit M Ⅱ oocytes.Methods:Rabbit oocytes were verified by using cryoloopwith ethylene glycol(EG)singly or EG combined with dimethyl sulphoxide(DMSO)as cryoprotectants,and cooled by taking oocytes directly into liquid nitrogen or by vitrification machine.After frozen rabbit o-ocytes thawed,the microtubulin and chromosome of the spindles were fixation and stained by immunofluo-rescent method.Confocal microscope was used to reveal spindle configuration.Results:In the two proto-cols of single EG used and EG combined with DMSO,the spindles were severely injured.But in protocolof EG combined with DMSO and at ultra-rapid cooling rate,the normal configuration of spindle rate ofthawed rabbit oobytes was similar to that of the control group.Conclusion:The protocol of EG combinedwith DMSO as cryoprotectants and with extremely high cooling rate by vitrification machine can producethe best effect on conservation of spindle configuration in vitrification of rabbit oocytes.

Objective To dynamically observe the changes of cytokines of splenocytes in mice immunized with recombinant bifidobacteria bifidum (Bb)- Eg95-EgA31 vaccine of Echinococcus grauulosus (Eg). Methods Balb/c mice were vaccinated by 5× 108 colony forming unit(CFU) orally and 5 × 105 CFU intranasally, respectively.Mice were killed on week 0,2,4,6,8,10, 12,14,16, 18 and 20 after immunization, respectively, and spleens were separated for cell culture with the stimulation of EgAg, concanavalin A (ConA) or lipopolysaccharide (LPS). The splenocyte supernatants were collected to determine the levels of interferonγ(IFN-γ), interleukin(IL)-12, tumor necrosis factor α(TNF-o) and IL-l0 using enzyme linked immunosorbent assay(ELISA) with MRS as control. Results In the oral immunization group, the levels of IFN-γ, IL-12, TNF-α and IL-10 showed a significant increase from week 2 to week 8, week 2 to week 8, week 4 and week 6 to week 10 after vaccination, respectively, and reached the highest level on week 4, week 2, week 4 and week 6 after vaccination, respectively;in EgAg stimulation group, the levels of IFN-γ, IL-12, TNF-α and IL-10 were (700.0 ± 115.5), (45.0 ± 5.8), (350.0 ± 57.7), (112.5 ± 14.4)ng/L, respectively, compared with week 0[(35.0 ± 5.8), (12.5 ± 2.9), (190.0 ± 11.6), (25.0 ± 5.8)ng/L, P ＜0.05 or ＜ 0.01] and MRS control group[(37.5 ± 5.0),(13.8 ± 2.5), (195.0 ± 5.8), (27.5 ± 2.9)ng/L, P＜ 0.05or ＜ 0.01]. In the intranasal immunization group, the levels of IFN-γ, IL-12, TNF-α and IL-10 showed an obvious increase from week 2 to week 8, week 2 to week 8, week 2 to week 6 and week 6 to week 16 after vaccination,respectively, and reached the highest level on week 2, week 2, week 4 and week 8 after vaccination, respectively;in EgAg stimulation group, the levels of IFN-γ, IL-12, TNF-α and IL-10 were (700.0 ± 115.5), (55.0 ± 5.8),(275.0 ± 28.9), (140.0 ± 11.6)ng/L, compared with week 0[(35.0 ± 5.8), (12.5 ± 2.9), (190.0 ± 11.6), (25.0 ±5.8)ng/L, P ＜ 0.05 or ＜ 0.01] and MRS control group[(37.5 ± 5.0), (13.8 ± 2.5), (195.0 ± 5.8), (27.5 ± 2.9)ng/L, P ＜ 0.05 or ＜ 0.01]. The cytokine levels in the groups with EgAg, ConA or LPS stimulus were significantly higher than those in the corresponding splenocytes suspension groups(P ＜ 0.05 or ＜ 0.01) , and the cytokine levels in the groups with ConA or LPS stimulus were obviously higher than those in the corresponding groups with EgAg stimulation(P ＜ 0.05 or ＜ 0.01). Conclusion The mixed Th1 and Th2 type response can be induced in mice immunized with the recombinant Bb-Eg95-EgA31 vaccine of Echinococcus granulosus in the early stage of immunization(2 to 6weeks).

Objective To construct and identify recombinant Bifutobacteria (rBb)-Eg95 vaccine of Echinococcus granulosus (Eg). Methods The total RNA was extracted from hydatid cyst protoscoleces shattered by ultrasound, Eg95 antigen encoding gene was obtained by reverse transcription-polymerase chain reaction(RT-PCR) from the template of total RNA using the primer designed according to the DNA sequence of Eg95, the gene was cloned into Escherichia coli-Bifutobacteria(E.coli-Bb) shuttle plasmid pGEX-1λT and transformed into E.coli BL2 (DE3) competent cell to construct recombinant plasmid pGEX-Eg95 using BamH Ⅰ and EcoR Ⅰ, the recombinant plasmid was identified by restriction endonuclease digestion, then was electroporated into Bb to construct rBb-Eg95 vaccine, the vaccine was identified by PCR. Results Four hundred and seventy-one bp Eg95 gene was amplified by RT-PCR, the products of restriction endonuclease digestion were the same as expected(471 bp Eg95 gene and 4947 bp pGEX-1λT), 471 bp Eg95 gene fragment was amplified by PCR from the template of pGEX-Eg95 extracted from rBb vaccine. Conclusion rBb-Eg95 vaccine of Eg is successfully constructed, which lays the theoretical foundation for exploitation and utilization of this vaccine.

OBJECTIVETo verify the regulatory effects of acupuncture on exercise tolerance in patients with chronic obstructive pulmonary disease (COPD) at stable phase.

METHODSThirty cases of COPD were randomly divided into a treatment group (16 cases) and a placebo group (14 cases). Based on specified aerobic exercise, acupuncture was applied in the treatment group and placebo acupuncture was used in the placebo group. The acupoints included Danzhong (CV 17), Rugen (ST 18), Guanyuan (CV 4), Zhongwan (CV 12), Tianshu (ST 25) and so on. The needle did not penetrate into the skin for the placebo group. The treatment was required for 2 to 3 times per week for totally 5 weeks. The indices of exercise tolerance, including 6-min walking distance (6-MWD), exercise time, maximum oxygen uptake (VO2max) forced expiratory volume in 1 second (FEV1)/forced vital capacity (FVC), maximum ventilatory volume (MVV), St. George respiratory questionnaire (SGRQ) were observed in two groups before and after treatment.

RESULTS(1) Exercise tolerance: the differences of 6-MWD and exercise time were statistically significant between groups, which were more superior in the treatment group (both P<0.01); the VO2max was significantly increased after treatment in the treatment group (P<0.05), but there was no difference between two groups (P>0.05). (2) Pulmonary ventilation function: the differences of FEV1%, FEV1/FVC and MVV% were statistically significant between groups, which were more superior in the treatment group (P<0.05, P<0.01); (3) SGRQ: the SGRQ was significantly improved after treatment in the treatment group (P<0.05), but there was no difference between two groups (P>0.05).

CONCLUSIONThe acupuncture could improve the exercise tolerance in patients with chronic obstructive pulmonary disease at stable phase, and shorten the onset time of aerobic exercise. Besides, acupuncture combined with aerobic exercise could effectively improve the pulmonary function.

Acupuncture Points ; Acupuncture Therapy ; Aged ; Exercise Tolerance ; Female ; Humans ; Male ; Middle Aged ; Pulmonary Disease, Chronic Obstructive ; physiopathology ; therapy

Phytantriol (PT), ethanol (ET) and water were used to prepare in situ cubic liquid crystal (ISV2). The pseudo-ternary phase diagram of PT-ET-water was constructed and isotropic solution formulations were chosen for further optimization. The physicochemical properties of isotropic solution formulations were evaluated to optimize the composition of ISV2. In situ hexagonal liquid crystals (ISH2) were prepared based on the composition of ISV2 with the addition of vitamin E acetate (VitEA) and the amount of VitEA was optimized by in vitro release behavior. The phase structures of liquid crystalline gels formed by ISV2 and ISH2 in excess water were confirmed by crossed polarized light microscopy and small angle X-ray scattering, respectively. Rheological properties of ISV2 and ISH2 were studied by a DHR-2 rheometer. In vitro drug release studies were conducted by using a dialysis membrane diffusion method. Pharmacokinetics was investigated by determination of sinomenine hydrochloride (SMH) concentration in synovial membrane after intra-articular injection of SMH-loaded ISH2 in adjuvant-induced arthritis rats. The optimal ISV2 (PT/ET/water, 64 : 16 : 20, w/w/w) loaded with 6 mg x g(-1) of SMH showed a suitable pH, injectable and formed a cubic liquid crystalline gel in situ with minimum water absorption in the shortest time. The optimal ISV2 was able to sustain the drug release for 144 h. The optimal ISH2 system was prepared by addition of 5% VitEA into PT in the optimal ISV2 system. This ISH2 (PT/VitEA/ET/water, 60.8 : 3.2 : 16 : 20, w/w/w/w) was an injectable isotropic solution with suitable pH. The new ISH2 was able to sustain the drug release for more than 240 h. Local pharmacokinetics study indicated that the retention time and AUC(0-∞) of ISH2 group were increased significantly compared with that of SMH solution group and the AUC(0-∞) of ISH2 group was 6.01 times higher than that of SMH solution group. The developed ISH2 was suitable for intra-articular injection that may apply to patients in the treatment of rheumatoid arthritis.
Animals ; Chemistry, Pharmaceutical ; Diffusion ; Ethanol ; Fatty Alcohols ; Gels ; Injections, Intra-Articular ; Liquid Crystals ; Morphinans ; administration & dosage ; chemistry ; Rats ; Rheology ; Water ; alpha-Tocopherol

Objective To understand the current situation of iodine deficiency diserders(IDD) in Longyan City and to evaluate the effect of prevention and control measures of IDD in order to provide evidence for formulating prevention and control tactics. Methods During the year of 2006 and 2007, the 30 primary schools were screened by population proportion survey(PPS) from the 7 counties of Longyan City. Forty children aged 8-10 years in each school were randomly selected as a group to examine thyroid, and 7 children in each group were selected to measure the urine iodine and the salt iodine at the same time. The goiter rote, the median urinary iodine, the consumption rate of qualified iodized salt, the iodine salt coverage rate, the rate of qualified iodized salt and the non-iodized rate were detected. Results The goiter rate of children aged 8-10 years old in Longyan City was 0.94%(79/8438). The median urinary iodine was 259.12 μg/L. The consumption rate of qualified iodized salt was 97.86% (1462/1494). The iodine salt coverage rate was 99.46%(1486/1494). The rate of qualified iodized salt was 98.38 (1462/1486), and the non-iodized rate was 0.54% (8/1494). Conclusions All indicators have reached the national standard of eliminating IDD in Longyan City.