Objective To explore the influence of proteasome inhibitor, MG-132 (N-benz0y1oxycarbonyl(Z)-Leu-Leuleucina1) on the expressions of carboxyl terminus of the Hsc70-interacting protein (CHIP) and heat shock protein 70 (HSP70) in ischemia reperfusion (I/R) rats and investigate the underlying mechanism of myocardial protection by the inhibitor. Methods Totally 54 adult SD rats were randomly divided into 3 groups, sham group (n=6), I/R group (n=24) and treatment group (I/R+T, n=24). The later 2 groups were further equally divided into 3 subgroups according different time of reperfusion. Left anterior descending (LAD) coronary artery was ligated for 30 min and then released for 2 h or 24 h or 7 d in different subgroups. Five minutes before reperfusion, MG-132 at dose of 0.75 mg/kg was given intravenously in I/R+T group,but I/R group and sham group were given the same volume of normal saline. The levels of CHIP and HSP70 at mRNA and protein level were detected by real-time PCR and Western blotting respectively. The correlation between CHIP and HSP70 expression was analyzed. Results Compared with I/R groups, the mRNA levels of CHIP and HSP70 were significantly increased in I/R+T groups (P

Objective To observe the pulmonary pathologic changes of endotoxin (ET)-induced acute lung injury (ALI) in rabbits and the potential protective effects of fructose-1,6-diphosphate (FDP) on the ET-induced ALI of rabbits. Methods 24 flap-eared albation rabbits were randomly assigned to 3 groups, 8 for each, as follows: control group (group A), ET-treated group (group B) and combination group (treated by ET and FDP, group C). ALI was induced by injection of ET at one time. Group A was only injected with placebo, normal saline. ET was given to the rest groups. In group C, FDP was given as an intervening measure after rabbits injured. Rabbits were sacrificed at 6h time point. The pulmonary pathologic changes were observed. Some markers of pulmonary tissues, including the content of lipid peroxide (LPO), thromboxane B2 (TXB2), 6-keto-prostaglandin F1α(6-keto-PGF1α), interleukin-13 (IL-13) and the activity of superoxide dismutase (SOD), were observed. Results Compared with group A, the contents of LPO and TXB2 of group B showed significant increase (P＜0.05, P＜0.01), the SOD activity of group B weakened obviously (P＜0.01), the contents of 6-keto-PGF1α and IL-13 showed no statistical differences. The LPO content and the SOD activity of group C were similar to those of group A, the contents of TXB2, 6-keto-PGF1α and IL-13 of group C were much higher than those of group A (P＜0.01). Estimated by light microscope and electron microscope, the structure of lung tissue of group A is basically normal, the pathologic injuries of lung tissue of group B were much more severer and that of group C were slighter. Conclusion In the progress of ET-induced ALI, the oxidative injury, imbalance of TXB2/6-keto-PGF1α ratio and the secretion deficiency of protective cytokines play important role in inducing pathologic injuries of lung tissues. FDP can inhibit oxidative injury, ameliorate TXB2/6-keto-PGF1α balance and promote the secretion of protective cytokines, which, in turn, can protect rabbits from ET-induced ALI to some extent.

Objective To investigate the prevalent situations of norovirus infection and genotype distributions in 2014 in Suzhou area .Methods A total of 322 fecal specimens were collected from infants with suspected viral diarrhea at Children′s Hospital of Soochow University in 2014 .Norovirus genogroupⅠ and Ⅱ was detected by reverse transcription (RT )‐polymerase chain reaction (PCR) ,In an effort to identify norovirus genotypes , RNA dependent RNA polymerase region (region A ) and capsid region (region C) segment of some samples positive for norovirus was amplified by RT‐PCR .Comprehensive molecular characteristics of norovirus were obtained by sequence analysis of the same samples in different regions .Results Among 322 fecal specimens ,67 cases were positive for norovirus of G Ⅱ group ,and norovirus of GⅠ group was not found .The genetic fragments of region A was successfully detected in 42 strains .Among all 42 specimens ,there were 35 GⅡ .e strains ,3 GⅡ .7 strains ,2 GⅡ .17 strains and 2 GⅡ .12 strains .The genetic fragments of region C was successfully detected in 53 strains .Among these 53 specimens ,there were 44 GⅡ .4‐2012Sydney strains ,4 GⅡ .6 strains ,2 GⅡ .17 strains ,2 GⅡ .3 strains and 1 GⅡ .2 strain .Conclusions It′s indicated that G Ⅱ .4‐2012Sydney is the main genotype of norovirus causing viral diarrhea in Suzhou ,and other genotypes including the new GⅡ .17 variant ,GⅡ . 7/GⅡ .6 and GⅡ .12/GⅡ .3 recombinant strains also exist .

Objective To investigate the CD34~+ umbilical cord blood hematopoietic stem cells (CD34~+ UBSC) transfected with interleukin 21 (IL-21) against the ovarian cancer effect in tumor-bearing nude mice. Methods CD34~+ UBSC were obtained from the UBSC by a magnetically activated cell sorting technique and then transfected with recombinant plasmid plRES2-IL-21-EGFP after the CD34~+ UBSC were proliferated in vitro. The therapeutic effect was evaluated by the size of the tumor and the life span in nude mice treated with the CD34~+ UBSC-IL-21. The expression of IL-21 and its bioactivity in CD34~+ UBSC-IL-21 and in local neoplasitc tissues were respectively detected by reverse transcription-polymerase chain reaction (RT-PCR), immune fluorescence technique, ELISA, Western blot, immunohistochemistry and splenocyte proliferative activity. The NK cell cytotoxicity and the numbers of NK cells, serum level of IFN-γ and TNF-αwere simultaneouly detected by FCM and ELISA, respectively. Results CD34~+ UBSC were cultured and transfected with pIRES2-IL-21-EGFP successfully. CD34~+ UBSC-IL-21 could inhibit the tumor growth and extended nude mice life span compared with other groups (P < 0.01). The expression of IL-21 in the neo-plastic tissue, serum level of IFN-γ and TNF-α , NK cell activity and the numbers of NK cells of mice origin and of human origin in splenocytes were increased significantly in the nude mice treated with CD34~+ UBSC-IL-21 compared with other groups(P <0.01). Conclusion The CD34~+ UBSC transfected with IL-21 have competent against ovarian cancer in tumor-bearing nude mice. The findings may establish a foundation for gene therapy of the ovarian cancer by CD34~+ UBSC-IL-21 in clinic application.

Objective:To investigate the status of family function and self-care ability in elderly patients with total hip arthroplasty, and analyze the relationship between them.Methods:From March 2018 to March 2019, the convenience sampling method was used. 224 elderly patients undergoing total hip arthroplasty who were hospitalized in the orthopedics department of the Red Cross Hospital of Yulin City, Guangxi were selected as the research objects. The Family Function Assessment Form (APGAR) and the Self-care Capability Scale (ESCA) were used to survey patients ′ family functions and self-care capabilities. Results:The total score of family function of elderly patients with total hip arthroplasty was 8.16 ± 1.98, and those with good family function accounted for 71.88%(161/224); the total score of self-care ability was 84.32 ± 6.54. Those with moderat to low self-care ability accounted for 81.70%(183/224). Patients ′ family function was positively correlated with self-care ability ( P <0.05). Conclusions:The family function of elderly patients undergoing total hip arthroplasty is closely related to their self-care ability. Interventions should be taken to improve the family function of the patients and thus improve their self-care ability.

Objective:To explore the effectiveness, safety and cost between urinary follicle stimulating hormone (uFSH) and recombinant follicle stimulating hormone (rFSH) in controlled ovarian stimulation (COS) in China.Methods:Data were collected from 16 reproductive centers in China covering oocytes collection time from May 1, 2015 to June 30, 2018. Eligible patients were over 18 years old, adopting COS with uFSH (uFSH group) or rFSH (rFSH group) as start gonadotropins (Gn), and using in vitro fertilization (IVF) and (or) intracytoplasmic sperm injection for fertilisation, excluding frozen embryo recovery cycle. Generalised estimating equation was used to address the violation of independency assumption between cycles due to multiple IVF cycles for one person and clustering nature of cycles carried out within one center. Controlling variables included age, body mass index, anti-Müllerian hormone level, cause of infertility, ovulation protocol, type of fertilisation, number of embryos transferred, number of days of Gn use.Results:Totally 102 061 cycles met eligibility criteria and were included in the analyses. In terms of effectiveness, after controlling relevant unbalanced baseline characteristics, compared with rFSH group, the high oocyte retrieval (>15 oocytes was considered high retrieval) rate of uFSH group significantly decreased in gonadotropin-releasing hormone agonist protocol ( OR=0.642, P<0.01) and in gonadotropin-releasing hormone antagonist protocol ( OR=0.556, P=0.001), but the clinical pregnancy rate per transfer cycle and the live birth rate per transfer cycle significantly increased ( OR=1.179, OR=1.169, both P<0.01) in both agonist and antagonist protocols. For safety, multiple analysis result demonstrated that in the agonist protocol, compared with rFSH group, the incidence of moderate to severe ovarian hyperstimulation syndrome of uFSH group significantly decreased ( OR=0.644, P=0.002). The differences in ectopic pregnancy rate and multiple pregnancy rate between the uFSH and rFSH groups were not significant ( P=0.890, P=0.470) in all patients. In terms of cost, compared with rFSH group, the uFSH group had lower total Gn costs for each patient ( P<0.01). Conclusion:For patients who underwent COS, uFSH has better safety, and economic profiles over rFSH in China.