Objective To evaluate the role of C-type lectin domain family 2,member B (CLEC2B) gene in the pathogenesis of vitiligo.Methods Real time fluorescence-based PCR was performed to detect the expression of CLEC2B mRNA in the peripheral blood and lesional skin of 37 patients with vitiligo as well as in the peripheral blood and normal skin of 40 healthy controls.Data were statistically analyzed by t test and chisquare test.Results Among the 37 patients,23 had progressive vitiligo,14 stable vitiligo,31 vitiligo vulgaris,6 segmental vitiligo.The expression level of CLEC2B mRNA was significantly higher in vitiligo lesions than in the control skin (1.21 ± 0.03 vs.1.00,t =4.432,P ＜ 0.05),but was of no significant difference in peripheral blood between the patients and healthy controls (1.02 ± 0.05 vs.1.00,t =1.435,P ＞ 0.05).Increased expression of CLEC2B mRNA was noted in lesions of vulgaris vitiligo compared with those of segmental vitiligo (1.21 ± 0.03 vs.1.02 ± 0.01,t =5.330,P ＜ 0.05),as well as in lesions of progressive vitiligo compared with those of stable vitiligo (1.25 ± 0.05 vs.1.08 ± 0.03,t =3.046,P ＜ 0.05).No significant difference was observed in the expression of CLEC2B mRNA among lesions of vitiligo with different courses (P ＞ 0.05).Conclusion The differential expression of CLEC2B mRNA may take part in the pathogenesis of vitiligo.

Objective To compare the influence of hemodialysis (HD) and peritoneal dialysis (PD) on early outcome of patients underwent kidney transplantation from donation after cardiac death (DCD).Methods Patients admitted in the First People's Hospital of Foshan with DCD kidney transplant from January 1st,2011 to June 30th,2016 were analyzed retrospectively.Recipients were grouped into HD group (n=61) and PD group (n=28) according to their pre-transplant dialysis modality.Their short-term outcomes after DCD kidney transplant were compared,including recovery of renal function,short-term complications and laboratory data.Results Patients had longer dialysis duration and lower hemoglobin,serum albumin and phosphorus in PD group than those in HD group (all P ＜ 0.05),but no significant difference shown in age,gender,body mass index,primary disease,blood pressure,and hepatitis B infection (all P ＞ 0.05).HD patients with 6.00(4.00,11.00) d recovery time of renal function,18.00(17.00,21.50) d hospital time,had 24.59％ the delayed graft function (DGF),3.28％ acute rejection and 16.39％ infection during hospitalization.While for PD patients the recovery time of renal function was 4.00(3.75,7.00) d;hospital time was 19.00(15.00,21.75) d;the incidence rate of DGF was 14.29％;acute rejection was 3.57％;and infection during hospitalization reached 17.86％.Above indexes were not significantly different between HD and PD groups (all P ＞0.05).Repeated measure ments showed that,compared with those before transplant surgery,after 1 month,3 months and 6 months HD and PD groups had decreased creatinine and phosphorus,and increased hemoglobinserum albumin and calcium;Serum albumin and calcium were different between the two groups (P ＜ 0.001,P=0.040),whereas creatinine,hemoglobin and phosphorus did not show difference (all P ＜ 0.05).After transplantation the trends of creatinine,hemoglobin,calcium and phosphorus were not different between the two groups (P values were 0.295,0.310,0.501 and 0.063,respectively).Conclusions No significant difference of the recovery regarding renal function,anemia,nutrition status and mineral metabolites was found between pre-transplant HD and PD modality in patients who underwent DCD kidney transplantations.

The influences of Ce on the microstructure and mechanics performances of Ti-Fe-Mo-Mn-Nb-Zr alloys were studied and presented in this paper. The microstructure of no-Ce Ti-Fe-Mo-Mn-Nb-Zr alloy was thick, long and dendritic, and the microstructure of alloy was fined by Ce. With the increase in Ce wt%, the microstructure became equiaxial gradually. Hardness decreased with the increase in Ce wt%. The compression yield strength became greater with the increasing of Ce wt%, but after the Ce wt% increased to a certian degree, the compression yield strength became smaller with the further increasing of Ce wt%. This phenomenon was explained in the light of bond energy and X-ray diffraction experiment. X-ray diffraction experiment showed that the alloys were beta-Ti.
Alloys ; chemistry ; Biocompatible Materials ; Cerium ; chemistry ; Hardness ; Materials Testing ; Surface Properties ; Titanium ; chemistry

Pathogen detection is very important to improve the prognosis of patients with peritoneal dialysis-associated peritonitis. The paper reported a case of peritonitis caused by Ureaplasma parvum diagnosed by metagenomics next-generation sequencing（mNGS）technology. The patient was a middle-aged woman and hospitalized due to abdominal pain and muddy effluent. Anti-infective treatments such as ceftazidime and vancomycin were given but the effect was poor. The result of traditional culture was negative. Ureaplasma parvum was detected by mNGS. After using doxycycline，the patient's inflammation was controlled. It is suggested that mNGS plays an important role in the detection of the pathogens in peritoneal dialysis-associated peritonitis patients with negative culture. Through this case report and literature review，clinical experience is provided for the diagnosis and treatment in such patients.

Objective:To demonstrate the polymorphism of α chain of bovine major histocompatibility complex(BoLA)classⅠmolecule and domain binding constant chain(Ii).Methods:Total 75 BoLA Iα genes were obtained from three Huaibei cattle and analyzed by molecular biology software;the genes of typical BoLA Iα domains and Ii were cloned,and then inserted into prokaryotic expression plasmid.After induced protein expression;the domains of BoLA Ⅰα chain binding to Ii were detected by pull-down meth-od and Western blot.The recombinant eukaryotic expression plasmids were constructed and the co-localization of BoLA Iα segments with Ii was observed by laser confocal microscopy.Results:Firstly,it was found that there were at least 5 kinds of BoLA Iα in the cloned gene sequence,which were highly polymorphic and they were mainly distributed in the antigen peptide binding region(PBR)of BoLA Ⅰ(α1α2)and cytoplasmic region.Secondly,the prokaryotic recombinant plasmids containing BoLA Ⅰα1α2α3,BoLA Ⅰα1α2 or BoLA Ⅰα 3 were constructed,then they were respectively induced to express and purified,in which,the BoLA Ⅰα1α2α3 and BoLA Ⅰα1α2 had the activity of binding to Ii.Finally,in 293T cells BoLA Ⅰα1α 2α3 or BoLA Ⅰα1α2 was found that could co-localize with Ii,while a single BoLA Ⅰα3 could not.Conclusion:BoLA Ⅰα gene is highly polymorphic.BoLA Ⅰα1α2 is a func-tional fragment that binds to Ii and co-locates intracellular.

Objective To evaluate the clinical effects of the treatment on chronic kidney disease 3 with dampness-heat type. Methods A retrospective cohort study recruited 103 patients with qi deficiency and dampness-heat type of CKD3. Among them,51 cases in the control group were treated with western medicine therapy. The 52 cases in the treatment group received Qingbudigui Decoction. SCr ,eGFR and 24hU-Prowere were observed after 12 months and 24 months for evaluating the clinical effects of Qingbudigui Decoction. Results After 12 and 24 months treatment,the treatment group had a significantly lower SCr and U-Pro(P < 0.01),but a higher eGFR (P<0.01,P<0.05). After 12 months and 24 months,there was no significant change in SCr,U-Pro or eGFR in the control group (P > 0.05). Conclusions Combination therapy of the Qingbudigui Decoction of the patients with qi deficiency and dampness-heat type of CKD3 could delay the kidney disease,which is superior to simple western medicine group. The mechanism may be related to the reduction of urinary protein excretion.

Objective:To determine whether the early stage platelet count can predict the outcome of peritoneal dialysis-associated peritonitis (PDAP).Methods:A retrospective cohort study was conducted by selecting PDAP patients who were hospitalized in the First People's Hospital of Foshan from January 2012 to January 2019. According to the final treatment outcome, the patients were divided into cured group and withdrawn group. The withdrawn group included patients who transferred to hemodialysis or died. Basic data on demography, blood routine examination, peritoneal fluid, biochemical indicators were compared between the two groups. Logistic regression analysis was used to analyze the withdrawn risk factors of PDAP.Results:There were 180 patients included in the study, including 112 cases in the cured group and 68 cases in the withdrawn group. Compared with the cured group, there were older age [(53.38±14.17) years old vs (48.41±13.04) years old, t=2.407, P=0.017], longer age of dialysis [(49.20±26.05) months vs (30.36±32.97) months, t=4.034, P<0.001], longer hospital stay [(23.88±11.50) d vs (17.80±3.95) d, t=5.133, P<0.001] and higher platelet count [(285.55±107.23)×10 9/L vs (234.90±74.03)×10 9/L, t=3.450, P=0.001], lower serum albumin [(31.72±7.47) g/L vs (35.40±4.93) g/L, t=-3.972, P<0.001] in the withdrawn group. Multivariate logistic regression analysis showed that longer dialysis age ( OR=1.012, 95% CI 1.007-1.024, P=0.015) and higher platelet count ( OR=1.013, 95% CI 1.004-1.026, P=0.008) were independent risk factors, and higher serum albumin ( OR=0.941, 95% CI 0.896-0.988, P=0.005) was an independent protective factor of withdrawal from peritoneal dialysis in PDAP patients. Conclusions:The long dialysis age, early high platelet count are independent risk factors and high serum albumin level is an independent protective factor for withdrawal from peritoneal dialysis in PDAP patients.