Objective：To confirm the effects of the macrophages and NO in the fibrosis formation of transplanted kidneys with chronic rejection. Methods：The quantitive immunohistochemistry was employed to observe the changes of relative quantitiy of macrophages, NO, collagen Ⅲ andⅣ， and to reveal the association between the increases of macrophages， NO， histopathologic damages, deposition of collagen Ⅲ and Ⅳ, finally, to infer the roles of the macrophages and NO in the fibrosis formation of transplanted kidneys with chronic rejection. Results: The macrophages accumulated and increased in the glomeruli, the tubules and the intersiticia tissue of kidneys, which was companied by the increased expression of collagen Ⅲ and Ⅳ during the early and middle stages. However, the macrophages and NO could not be detected, which was companied by the decreased deposition of collagen Ⅲ and Ⅳduring the advanced stage. There were significant differences between the 3 types(glomerulus disease type,blocking vessel type and intersticial sclerostic type) (P<0.05 or P<0.01). Conclusion：The increase of macrophages and the NO may closely interrelated with the fibrosis formation in transplanted kidneys with chronic rejection.

PURPOSE To investigate the relationship between the changes of extracellular matrix invaded by colorectal carcinoma and vascular endothelial cells,which will be useful to understand colorectal carcinoma biological behavior and may have clinical significance in the treatment of colorectal carcinoma.METHODS Immunohistochemistry technique and semi quantitative analysis were used.RESULTS As to the changes of ECM and endothelial cells,there were significant differences among the paracarcinoma groups,different invasive groups and normal group.THe increase of LN,CD34,F8 and actin were correlated with colorectal carcinoma invasion( P

Objective To make a survey on common cosmetic allergens, and to provide epidemiological data and clinical evidence for cosmetic allergy. Methods Patch test was performed by using 49cosmetic allergens from a European cosmetic series and 5 Chinese standard screening allergens on 89patients with suspected cosmetic allergic contact dermatitis. Test results were determined according to the International Contact Dermatitis Research Group (ICDRG) recommendation. Results Of the 89 patients, 61(68.5%) showed positive reactions to one or more cosmetic allergens. The most common allergens were fragrances (33.7%), followed by preservatives (30.3%), para-phenylenediamine (25.8%) and amerchol L 101(10.1%). Conclusion Fragrances, preservatives, para-phenylenediamine and amerchol L 101 are dominant causative allergens in patients with cosmetic allergic contact dermatitis.

In this study, two experimental patterns of autogenous nerve replantation in situ and centrocentral nerve simple suture were performed on the rabbit median and ulnar nerves. By light and transmission electron microscopy and immunohistochemistry, the results showed that autogenous nerve replantation in situ could inhibit neuroma formation, and its mechanism might that two proximal stump axons could conjunct within interpolated graft segment, and the nerve simple suture could not inhibit neuroma development for lack of proper environment for conjunction of two proximal stump axons.

Objective: To investigate androgen receptor (AR) mRNA expression in human peripheral leukocytes. Methods: Total RNA was isolated from peripheral leukocytes of healthy men and women, AR mRNA was determined by RT PCR and Northern blot. Results: An AR cDNA fragment of the expected size of 390 bp was determined by RT PCR. 9.4 kb AR mRNA was detected by Northern blot, which was consistent with AR mRNA in human prostate reported by Lubahn et al . Conclusion:AR mRNA expresses in human peripheral leukocytes, this provides basis for studying the effect of androgen on the function of the human peripheral leukocytes and the changes of AR in pathological stages. [

Objective To investigate the differential expression levels and significance of regulatory T cell (Treg) and T helper 17 (Th17) related immunologic factors in peripheral blood of arsenic-exposed rats.Methods Thirty-two Wistar rats were numbered by weight,randomly divided into four groups [control,low (1.25 ml/kg),medium (2.50 ml/kg),and high (5.00 ml/kg)],8 rats per group.Rats in control group were given oral gavage of deionized water,and low,medium and high arsenic exposed groups were given oral gavage doses of 2.00 g/L sodium arsenite (NaAsO2) according to their body weight for 6 days every week.After 4 months,the urine and peripheral blood samples of rats were collected,urinary arsenic (uAs) was detected by inductively coupled plasma-mass spectrometry (ICP-MS),the results were shown in [median (minimum and maximum)],uAs was corrected by urinary creatinine (uCr),the unit was μg/g Cr;enzyme-linked immune-sorbent assay (ELISA) was applied to detect the levels of Treg,Th17,T lymphocytes activation related immunologic factors [interleukin-10 (IL-10),transforming growth factor beta1 (TGF-31),IL-17,IL-6,IL-2],the results were shown in (x) ± s.Results The uAs of the rats was compared between control,low,medium,and high arsenic exposed groups [7.50 (3.16-9.81),72.34 (62.34-106.63),209.15 (154.41-232.20),369.73 (289.50-516.55) μg/g Cr],the differences were statistically significant (F =337.55,P ＜ 0.05).IL-10 [(85.03 ± 7.11),(93.96 ± 8.14),(97.48 ± 6.23),(93.47 ± 4.41) ng/L],TGF-β1 [(72.88 ± 2.96),(81.45 ± 8.15),(86.08 ± 7.55),(90.29 ± 5.35) ng/L],IL-17 [(18.15 ± 3.66),(25.54 ± 5.59),(31.48 ± 5.74),(37.25 ± 7.36) ng/L],IL-6 [(83.68 ± 8.48),(85.14 ± 7.11),(89.78 ± 5.36),(93.48 ± 5.77) ng/L],and IL-2 [(80.65 ± 6.90),(73.86 ± 8.00),(69.93 ± 7.77),(62.06 ± 9.82) ng/L] of the rats were compared between control,low,medium,and high arsenic exposed groups,the differences were statistically significant (F =5.094,11.054,16.249,3.474,5.119,all P ＜ 0.05).There were positive correlations between uAs and TGF-β1,IL-17 concentration (r =0.723,0.605,all P ＜ 0.01),while IL-2 showed a negative correlation (r =-0.484,P ＜ 0.05).Concltsion Arsenic exposure could affect the secretion of Treg and Th17 related immunologic factors,so as to the imbalance of anti-inflammatory and pro-inflammatory,which may play a role in the formation and development of arsenic-related immune injury.

Objective To determine the levels of plasma M-CSF in cervical cancer patients and cervical intraepitheliai neoplasia(CIN)patients,and to discuss the diagnostic utility of M-CSF in the development of cervi-cal cancer. Methods Forty-nine cases of cervical cancer,60 cases of CIN and 40 healthy controls were selected from June 2014 to June 2016. Plasma levels of M-CSF and SCC-Ag were determined by using ELISA and MEIA, respectively. Results Significantly different concentrations of M-CSF and SCC-Ag were observed in patients with cervical cancer compared to the healthy controls and CIN patients(P<0.01,respectively). Significant difference in plasma M-CSF level between the healthy controls and benign lesion patients were also found(P<0.05).However, no significant difference in SCC-Ag was found between the healthy controls and benign lesion patients. SCC-Ag combined M-CSF could obviously increase the detection rate of cervical cancer,without increasing the false posi-tive rate. The level of M-CSF in patients with cervical cancer and high grade of CIN reduced to the normal level, with significant difference before and after surgery(P<0.05).Meanwhile,the level of SCCAg in CIN patients was significantly reduced before and after surgery(P<0.05).Conclusions This study suggests the potential utility of M-CSF as a good candidate for a serum marker of cervical cancer,as well as benign lesions of this organ(CIN), and M-CSF may also be use to predict the outcome of CIN.

Objective: To investigate the efficacy and safety of the recombinant human tumor necrosis factor receptor Ⅱ-IgG Fc fusion protein (rhTNFR: Fc, etanercept) for the treatment of occupational medicamentosa-like dermatitis induced by trichloroethylene (OMLDT) . Methods: In September 2011 to February 2016, 12 patients with OMLDT were treated with etanercept 25 mg, subcutaneous injection, twice per week, doubling of first dose. The course of treatment was 6 weeks. The drug eruption area and severity index (DASI) score, the proportion of patients achieving a 50%, 75% and 90% reduction in DASI (DASI50, DASI75, DASI90) and the serum level of TNF-α were used to assess the efficacy at different times. Adverse reactions were also recorded and evaluated. The results were statistically analyzed by nonparametric Friedman test and repetitive measurement ANOVA using the software SPSS19.0. Results: After 4 weeks treatment, the DASI score decreased form 56.33±7.02 to 0.50±0.91 (P<0.01) . The DASI50, DASI75 and DASI90 were all increased to 12 (100%) . The serum level of TNF-α decreased form (43.74±41.62) pg/ml to (3.03±0.47) pg/ml (P<0.01) . Statistically significant difference was observed from the above indexes. There were no adverse reactions in clinical application. Conclusion Recombinant human tumor necrosis factor receptor Ⅱ-IgG Fc fusion protein may be a safe and effective drug in the treatment of OMLDT.

Objective To observe the differential expression level of CD4+CD25+Foxp3+regulatory T cells (Treg) in liver of arsenic-exposed rats, explore the regulatory mechanisms on immunological of hepatic injury induced by arsenic, and provide a basis for prevention and treatment of the disease. Methods Thirty-two healthy Wistar rats were selected and randomly divided into control,low,medium and high arsenic dose groups by weight,8 rats per group. Rats in control group were given oral gavage of deionized water, while the other groups were given oral gavage doses of 2.00 g/L sodium arsenite(NaAsO2) according to their body weight for 6 days every week, the concentrations were 1.25, 2.50 and 5.00 ml/kg. After 4 months, liver tissue samples of rats were collected, the content of arsenic in liver was detected by inductively coupled plasma mass spectrometry (ICP-MS);the expression of Treg cells in liver was detected by immunohistochemistry; enzyme-linked immunosorbent assay (ELISA) was applied to detect the levels of interloukin-10 (IL-10),transforming growth factor beta 1 (TGF-β1), IL-6, IL-17 and IL-2. Results Compared with the control group [28.57 (17.64 - 35.64)μg/g], the content of arsenic in liver in low,medium and high arsenic exposed groups[M(P25-P75):638.30(527.91-802.58),591.64(513.82-723.16),792.55 (695.93 - 1 074.41) μg/g] increased, the differences were statistically significant(P < 0.05). Compared with low arsenic group, the content of arsenic in liver in high arsenic group increased, the difference was statistically significant (P < 0.05). Numerical density on area (NA) of positive Treg cells in medium,high arsenic exposed groups [(2.25 ± 0.50),(4.00 ± 2.16)A/cm2]was higher than that of the control group[(0.60 ± 0.54)A/cm2,P<0.05];NA of positive Treg cells in high arsenic exposed group was higher than that of the low arsenic exposed group[(1.50 ± 0.58) A/cm2, P < 0.05]. The expressions of the IL-10 in low, medium and high arsenic exposed groups [(5.58 ± 1.70), (6.78 ± 1.09),(7.18 ± 0.53)μg/L]were higher than that of the control group[(2.32 ± 0.83) μg/L,P<0.05];compared with low arsenic group, the expression of IL-10 in high arsenic group increased (P < 0.05); compared with control group [(1.46 ± 0.65) μg/L], the expression of TGF-β1 in high arsenic exposed group increased[(9.06 ± 3.60)μg/L, P<0.05];compared with control group [(2.33 ± 0.66)μg/L], the expression of IL-6 in high arsenic exposed group increased [(5.03 ± 1.39) μg/L, P < 0.05], compared with low arsenic exposed group [(2.46 ± 1.71) μg/L], the expressions of IL-6 in high arsenic exposed group increased, the difference was statistically significant (P < 0.05);the expression of IL-17 among control, low, medium and high arsenic exposed groups[(4.87 ± 1.64),(7.50 ± 2.74), (6.21 ± 1.47),(7.23 ± 2.68)μg/L]were not statistically significant (F = 1.429, P > 0.05); compared with control group [(16.30 ± 3.98) μg/L], the expression of IL-2 in high arsenic exposed group decreased[(9.93 ± 2.65) μg/L, P <0.05]. The content of arsenic in liver was positively correlated with the expression of IL-10, TGF-β1, IL-17, IL-6 (rs=0.696,0.463,0.632,0.502,P<0.05),and negatively correlated with the expression of IL-2(rs=-0.522,P<0.05). Conclusion With increasing of arsenic exposure level, the content of arsenic in liver and the expression of CD4+CD25+Foxp3+Treg have increased,the cytokines are secreted abnormally,liver immunological micro environment is disordered,immune tolerance is formed,and immune clearance is inhibited,which may play an important role in the occur and development of immunological liver damage induced by arsenic in rat.

Objective To investigate the infiltration of T helper 17 (Th17) and regulatory T cells (Treg) in the liver of rats exposed to arsenic,and to investigate the roles of Th17 and Treg in infiltration of liver injury induced by arsenic.Methods Thirty-two Wistar rats,half male and half female,were randomly divided into control,low,medium and high arsenic dose groups by body weight via the random number table method,8 rats per group.Rats in control group were given oral garage of deionized water,while other groups were given oral gavage doses of 2.00 g/L sodium arsenite (NaAsO2) according to their body weight for 6 days every week,the concentrations of NaAsO2 were 1.25,2.50 and 5.00 ml/kg,respectively.After 4 months,liver tissue samples of rats were collected,the content of arsenic in liver was determined by inductively coupled plasma mass spectrometry (ICP-MS);Hematoxylin-eosin staining (HE) method was used to observe the morphological changes of liver tissue in rats;the protein expressions of interleukin-17A (IL-17A,the imflammatory factor secreted by Th17 cells) and Forkhead Box P3 (Foxp3,the lineage-specific transcription factor of Treg cells) were measured with immunohistochemistry.Results ① Arsenic content in liver of low,medium,and high arsenic exposed groups [63.83 (52.79-80.26),59.16 (51.38-76.58),79.26 (69.59-107.44) μg/g] were higher than those of the control group [2.86 (1.76-3.56)μg/g,P ＜ 0.05],and the high arsenic dose group was higher than the medium arsenic dose group (P ＜ 0.05).② With increasing doses of arsenic,the numbers of inflammatory cells in the liver tissue of rats were increased,and the liver tissue of the high arsenic dose group showed vacuolar degeneration and pathological changes in some areas.③ Compared with the control group,low and medium arsenic dose groups (0.001 + 0.001,0.010 ± 0.020,0.030 ± 0.080),the expression of IL-17A protein in the liver in high arsenic dose group were significantly increased (0.220 ± 0.130,P ＜ 0.05),the differences were statistically significant between groups (F =14.776,P ＜0.05).The expressions of Foxp3 protein in the liver in low,medium,and high arsenic dose groups were significantly higher (0.270 ± 0.050,0.330 ± 0.040,0.320 ± 0.070) than that in the control group (0.070 ± 0.020),the differences were statistically significant between groups (F =56.990,P ＜ 0.05).④ There was a positive correlation between hepatic arsenic levels and protein levels of IL-17A and Foxp3 in liver (r =0.48,0.81,P ＜ 0.05).Conclusion Arsenic exposure can increase the content of arsenic in liver tissue of rats,which causes the changes of infiltration of Th17 and Treg cells,leading to the change of immune status,suggesting that Thl7 and Treg cells play an important role in the development of arsenic-induced immune injury.