[Objective] To study the change regulatives of BMD(bone mineral density)in after total ankle arthroplasty.[Methods]From Oct.1997 to Dec.2004,the BMD of the subjects were measured to involve in the study.There were 6 cases(5 male,1 female)with an average of 54.4 years old.Their BMD of the subjects was measured by DEX-A(Lunar)at the tibia and talus of the ankle post-arthroplasty in 6 months,12 months,2 years and 3 years postoperatively.All data were saved in computer and all statistical analyses were performed uaing SPSS 8.0 system in personal computer.[Results]The bone trabecula growing into micropore coated of the prosthesis has been showed on radiograth post-surgeryat average period of 1.5 years to 2 years.In the third year itreached bone mass at the distal tibia and talus of the total ankle replacement,which mean BMD 0.854?0.217 at post operative 6 months,BMD 0.975?0.142 at post operative 12 months,BMD 0.956?0.213 at post operative 2 years,and 1.155?0.210 at 3 years(P

[Objective]To investigate the long-term result of total hip replacement with a Ribbed hydroxyapatite-coated proximally femoral stem and cup component.[Method]From June 1999 to May 2002,24 cases (26 hips) with hip joint disease received cementless total hip replacement with a Ribbed hydroxyapatite-coated proximally femoral stem and cup component. There were 14 males and 10 females with the average age of 59.4 years. The disorders included avascular necrosis of the femoral head in 13 cases,femoral neck fractures in 9 cases,hip dysplasia in 2 cases. X-ray scans were recorded at 7~10 days,6 month,and every 1 year after operation respectively. Harris score was evaluated at last follow-up for hip joint function evaluation.[Result]According to Harris evaluation,16 cases (18 hips) received 85-100 points,8 cases (8 hips) received 75-84 points. Mild thigh pain happed in 1 case. Slight bone absorption was found in 1 case. No case needed second revision. Six month-3 year postoperative X-ray showed bone absorption in Gruen zone 5,6 and 2,3 near HA coating in 1 case (1 hip). Bone density increase was found in both cancellous and cortical bone,which revealed good prosthesis-bone fixation.[Conclusion]A Ribbed proximally hydroxyapatite-coated femoral stem and cup implant are able to enhance the initial fixation of implants,to accelerate bone in-growth and osseous fixation of the femoral stem and cup component,to seal the interface between the implant and osseous,and to prevent ingress of polyethylene particles which lead to thigh pain and bone absorption. It has showed good long-term results.

Objective To detect the content of(1-3)-β-D-dextran(BG)and CD4T lymphocytes in order to early diagnose invasive pulmonary fungal infection(IPFI)in AIDS patients.Methods According to the qualified lower respiratory tract fungal culture re-sults,153 patients with pulmonary infection symptoms and definitely diagnosed AIDS were divided into the positive IPFI group(63 cases)and the negative IPFI group(90 cases);then plasma BG and CD4T lymphocytes were simultaneously detected in the positive IPFI group,negative IPFI group and 50 healthy controls.The same index was performed the pairwise comparison in each group and the statistical analysis was conducted.Results The mean values of BG and CD4T lymphocytes in the positive IPFI group were (56.30±15.38)pg/mL and(56±41)/μL;which in the negative IPFI group were(21.32±14.26)pg/mL and(200±53)/μL;which in the healthy control group were(2.89±1.55)pg/mL and(480±89)/μL.The pairwise comparison of BG and CD4T lymphocytes showed the statistical differences among the three groups by the t-test(P <0.01).Conclusion The combined detection of BG and CD4 lymphocyte has the value in early diagnosis of IPFI)on AIDS apparent infection.

Objective To investigate the influence mechanism of Cordyceps sinensis (CS) on β-glycerophosphate-induced vascular smooth muscle cell (VSMC) calcification.Methods The effect of CS on VSMC cell viability was detected by CCK-8.The cellular models of rat VSMC calcification were established by treating with β-glycerophosphate (β-GP,10 mmol/L);then CS (10 mg/L),autophagy inhibitor 3-methyladenine (3-MA,5 mmol/L),and AMPK inhibitor compound C (CC,10 μmol/L) were added to the cell cultures.There were a total of 5 experiment groups:VSMC cultured in normal medium (Control),VSMC treated with β-GP,VSMC treated with β-GP and CS,VSMC treated with 3-MA,β-GP and CS,and VSMC treated with CC,β-GP and CS.The calcium nodules and calcium content were examined with alizarin red S staining and the O-cresolphthaleincomplexone method,respectively.The autophagosomes within the VSMC were observed using transmission electron microscope (TEM).Immunofluorescence showed the accumulation of microtubule-associated protein 1 light chain 3 (LC3) puncta.In addition,levels of osteogenic related proteins,autophagy related proteins,and AMPK/mTOR pathway related proteins were evaluated by Western blotting.Results CS increased the number of autophagosomes and the accumulation of LC3 puncta within VSMC.It also upregulated the protein levels of LC3 Ⅱ/LC3 Ⅰ,beclin1,α-SMA,and p-AMPK;whereas,the protein levels of Runx2 and p-mTOR,as well as calcium nodules and calcium content were reduced (all P ＜ 0.01).When the cells were pretreated with 3-MA before treating with β-GP and CS,the autophagosomes,accumulation of LC3 puncta,and protein levels of LC3 Ⅱ/LC3 Ⅰ,beclinl,and α-SMA were decreased (all P ＜ 0.01);however,the protein level of Runx2,and the calcium nodules and calcium content were increased (all P ＜ 0.01).Nevertheless,when the cells were pretreated with CC before giving β-GP and CS,the autophagosomes,the accumulation of LC3 puncta,and the expression levels of p-AMPK,LC3 Ⅱ/LC3 Ⅰ,beclin1,and α-SMA were significantly down-regulated (all P ＜ 0.01);whereas,the expression levels of Runx2 and p-mTOR,as well as calcium nodules and calcium content were increased (all P ＜ 0.01).Conclusions CS can effectively alleviate β-GP-induced VSMC calcification,which may be due to the activation of autophagy by AMPK/mTOR signaling pathway.

OBJECTIVETo investigate the effects of rs10916581, a common single nucleotide polymorphism (SNP) located in the promoter region of pre-miR-320b-2, on coronary heart disease (CHD) risk and circulating microRNA-320b (miR-320b) level. To explore potential factors influencing circulating miR-320b level.

METHODSRs10916581 was genotyped in a case-control study with 1 507 CHD cases and 1 379 age- and sex-frequency-matched controls. The cases were consecutively recruited from 3 hospitals (Tongji Hospital, Union Hospital, and Wugang Hospital) in Wuhan city (Hubei, China) between May 2004 and October 2009 and all the controls resided in Wuhan communities. A subgroup of 174 CHD cases and 181 non-diabetes controls without acute infection were randomly selected and their circulating miR-320b levels were detected using quantitative reverse transcriptase polymerase chain reaction assays. The association of rs10916581 with CHD susceptibility was analyzed with multivariable logistic regression model. Generalized linear regression model was used to explore the associations of rs10916581 and some other factors with circulating miR-320b level.

RESULTSIn single-factor logistic regression analysis, no association was found between rs10916581 and CHD risk. After adjustment for age, sex, BMI, smoking status, hypertension, diabetes, total triglyceride, total cholesterol/high density lipoprotein (TC/HDL-C), the result did not materially alter(compared with CC genotype, the OR (95%CI) of CHR in the subjects carried CT, TT, CT+TT genotypes were 0.94 (0.76-1.15), 0.99 (0.74-1.33) and 0.95 (0.78-1.16) ). No significant interactions were observed between the conventional risk factors of CHD (age, gender, smoking status, BMI, hypertension, diabetes, CHD family history) and rs10916581 on CHD risk (P > 0.05). Rs10916581 showed no significant association with circulating miR-320b level in cases, controls or total population (β(95%CI) was -0.028 (-0.495-0.440), 0.250 (-0.226-0.727) and 0.134 (-0.218-0.486) respectively, P > 0.05). However, circulating miR-320b level was negatively associated with BMI (β (95%CI) was -0.140 (-0.261--0.020), P = 0.022) while positively associated with TC/HDL(β (95%CI) was 0.620 (0.261-0.979), P = 0.001) in cases, and in total population, its circulating level tended to be lower in diabetes or hypertension patients (β(95%CI) was -1.025 (-1.696--0.354) and -0.594 (-1.138--0.049) respectively, P = 0.003, 0.033 respectively) and was positively associated with TC/HDL-C (β(95%CI) was 0.108 (0.027-0.190), P = 0.009).

CONCLUSIONThe common SNP (rs10916581) in the promoter region of pre-miR-320b-2 might have little contribution to the CHD predisposition in Chinese Han population, and it might not affect circulating miR-320b level. Conventional CHD risk factors (BMI, TC/HDL-C, hypertension and diabetes) might have effects on its circulating level.

Aged ; Case-Control Studies ; China ; ethnology ; Coronary Disease ; genetics ; Diabetes Mellitus ; Genotype ; Humans ; Hypertension ; Logistic Models ; MicroRNAs ; adverse effects ; blood ; genetics ; Polymorphism, Single Nucleotide ; genetics ; Promoter Regions, Genetic ; Risk Factors ; Triglycerides

Liver ischemia-reperfusion injury (IRI) is a major complication of hemorrhagic shock, liver transplantation, and other liver surgeries. It’s important to study the targets towards liver IRI for preventing and mitigating the clinical renal injury. It has been reported that the peroxisome proliferator activated receptor gamma (PPARγ) protects the liver against IRI by targeting family with sequence similarity 3 member A (FAM3A). At the meantime, noncoding RNAs, including lncRNAs and miRNAs, have also been reported to play important roles on the process of hepatic IRI. This review briefly discussed the roles and mechanisms of PPARγ, FAM3A and noncoding RNAs in liver IRI, to find potential targets of gene therapy, aiming to prevent and mitigate the liver IRI as well as to improve postoperative liver function.

Aging-induced changes in the immune system are associated with a higher incidence of infection and vaccination failure. Lymph nodes, which filter the lymph to identify and fight infections, play a central role in this process. However, careful characterization of the impact of aging on lymph nodes and associated autoimmune diseases is lacking. We combined single-cell RNA sequencing (scRNA-seq) with flow cytometry to delineate the immune cell atlas of cervical draining lymph nodes (CDLNs) of both young and old mice with or without experimental autoimmune uveitis (EAU). We found extensive and complicated changes in the cellular constituents of CDLNs during aging. When confronted with autoimmune challenges, old mice developed milder EAU compared to young mice. Within this EAU process, we highlighted that the pathogenicity of T helper 17 cells (Th17) was dampened, as shown by reduced GM-CSF secretion in old mice. The mitigated secretion of GM-CSF contributed to alleviation of IL-23 secretion by antigen-presenting cells (APCs) and may, in turn, weaken APCs' effects on facilitating the pathogenicity of Th17 cells. Meanwhile, our study further unveiled that aging downregulated GM-CSF secretion through reducing both the transcript and protein levels of IL-23R in Th17 cells from CDLNs. Overall, aging altered immune cell responses, especially through toning down Th17 cells, counteracting EAU challenge in old mice.
Aging ; Animals ; Autoimmune Diseases ; Disease Models, Animal ; Granulocyte-Macrophage Colony-Stimulating Factor/metabolism* ; Mice ; Mice, Inbred C57BL ; Th17 Cells/metabolism* ; Uveitis/pathology* ; Virulence