The expressions of miR-26a and TLR in peripheral blood mononuclear cells of patients with psoriasis vulgaris and their relationships with disease activity / 中国医师杂志

Objective:To investigate the expressions of micro RNA-26a (miR-26a) and toll-like receptor (TLR) in peripheral blood mononuclear cells (PBMCs) of patients with psoriasis vulgaris (PV), and to analyze their relationships with disease activity.Methods:Total 200 PV patients treated in our hospital from June 2016 to June 2018 were selected as the study group. According to Psoriasis Area and Severity Index (PASI) score, the PV patients were divided into 71 cases in mild group, 84 cases in moderate group, 45 cases in severe group, at the same time, 100 healthy people in the physical examination center were selected as the control group. The mRNA levels of TLR2 and TLR4 in PBMCs were detected by fluorescence quantitative polymerase chain reaction (PCR); serum C-reactive protein (CRP) level was detected by immunoturbidimetry; Pearson correlation was used to analyze the relationships between the expressions of miR-26a, TLR2 and TLR4 with the activity of PV (PASI score and CRP level).Results:There was no significant difference in sex, age, body mass index (BMI) and course of disease among PV patients of different grades in the study group ( P>0.05); the mRNA expression levels of miR-26a, TLR2 and TLR4 in PBMCs of the study group were significantly higher than those of the control group ( P<0.05); the PASI score, serum CRP level, miR-26a, TLR2 and TLR4 mRNA expression levels in severe PV group were significantly higher than those in mild group and moderate group ( P<0.05), and the above indexe in the moderate group were significantly higher than those in mild group ( P<0.05); the PASI score and serum CRP level of PV patients were positively correlated with miR-26a, TLR2 and TLR4 mRNA expression levels ( P<0.01). Conclusions:The mRNA expression levels of miR-26a, TLR2 and TLR4 in PBMCs of PV patients are increased and positively correlated with PASI score and CRP level, which can reflect the activity of PV disease.

Allergens detection and clinical analysis of prurigo nodularis in patients / 西安交通大学学报(医学版)

ABSTRACT:Objective To investigate the distributional characteristics of anaphylactogens in prurigo nodularis (PN)patients so as to provide clinical basis for selecting the method of allergy test.Methods We divided 262 PN patients into four groups and then used skin-prick (5 4 patients ),skin-patch (5 0 patients ),serum IgE allergen detection (56 patients)and serum IgG allergen detection (102 patients)to analyze anaphylactogen positive rate and their distribution differences in PN.Results For skin-prick test in 54 PN patients,the detection rates of platanus orientalis,artemisia argyi,poplar,dust mite,dirt mite,cod,peanut and tomato were higher than those in the control group (P<0.05 ).For skin-patch test in 50 PN patients,the detection rates of nickel sulfate,flavor compounds,black rubber,and carba mix were higher than those in the control group (P<0.05).For serum IgE test in 5 6 PN patients,the detection rates of house dust,scandent hop,cat/dog hair,bug,penicillium/neurospora and mutton were higher than those in the control group (P<0.05).For serum IgG test in 102 PN ones,the detection rates of crab,shrimp,beef and cod were higher than those in the control group (P<0.05).Conclusion Skin-prick test and serum IgE detection have high application values in PN patients.Serum IgG detection is of certain importance in adjusting PN patients’diet structure while skin-patch test applied in PN needs further exploration.

Study on the Extraction Technology of Polysaccharides from Antlion and Its Immune Activity in vivo / 中国药房

OBJECTIVE:To optimize the extraction technology of polysaccharides from antlion and explore its effect on im-mune functions of mice. METHODS:Using content of polysaccharides as investigation index,the effects of extracting polysaccha-rides from antlion by water extraction method protease hydrolysis extraction(optimized by orthogonal test using extraction tempera-ture,enzyme dosage,extraction time as indexes),and diluted alkali extraction(optimized by orthogonal test using alkali concentra-tion,extraction temperature,extraction time as indexes)were compared. 128 KM mice were randomly divided into 4 groups,then randomly divided into control group(normal saline),polysaccharides low-dose,medium-dose,high-dose groups(20,40,80 mg/kg),8 in each group,iv in tail vein,0.2 mL/10 g,once a day,for 1 week,which were respectively used to determine the phago-cytosis percentage and phagocytic index of peritoneal macrophages,spleen and thymus index,lymphocyte transformation rate and serum hemolysin levels. RESULTS:The contents of polysaccharides by 3 methods were 14.48%,38.66%,30.62%,respectively. The content of polysaccharides by protease hydrolysis extraction was the highest,the optimal extraction technology were as follows as using 100 μg/g papain extracting 3 h under 40 ℃. Compared with control group,phagocytosis percentage,phagocytic index, spleen index in polysaccharides low-dose,medium-dose,high-dose groups were significantly increased (P0.05);serum hemoly-sin in polysaccharides medium-dose group was significantly increased (P<0.05). CONCLUSIONS:Protease hydrolysis extraction is suitable for the extraction of polysaccharides from antlion,the optimal technology is reliable. Polysaccharides from antlion show activity in enhancing mice non-specific immunity and humoral immunity.

Tissue culture of Vinca minor and determination of vincamine / 中国中药杂志

<p><b>OBJECTIVE</b>To study tissue culture of Vinca minor and determine the content of vincamine.</p><p><b>METHOD</b>Leaf blades, stalks, root segment of V. minor were used as explants to study the effect of 2, 4-D,6-BA,NAA on its callus induction and vincamine contents in the orthogonal design experiment. In the peak period of callus formation, vincamine content in callus of V. minor and sterile plants was determined by HPLC. The experimental data was statistically analyzed.</p><p><b>RESULT</b>The content of 6-BA and NAA had no significant effect on its callus induction. But the content of 2, 4-D had significant effect on its callus induction. Within 20,40,60 d, the content of vincamine in sterile plant was (0.015 +/- 0.003)%, (0.097 +/- 0.001)% , (0.113 +/- 0.06)%, respectively. In the peak period of callus formation, vincamine content in callus of leaf blades, stalks, root segment was (0.024 +/- 0.0025)%, (0.016 +/- 0.0015)%, (0.010 +/- 0.0015)%, respectively. To 30 days of subculture, vincamine content in callus of leaf blades, stalks, root segment was (0.041 +/- 0.002)%, (0.019 +/- 0001)%, (0.016 +/- 0.002)%, respectively.</p><p><b>CONCLUSION</b>The optimal hormone combination for callus initiation was MS +2, 4-D 1.0 mg x L(-1) +6-BA 0.5 mg x L(-1) + NAA 0.5 mg x L(-1). In different growth periods, vincamine content in sterile plants is significantly different. From different explants in callus vincamine content is different, in which leaves callus is significantly higher than that of stems, roots produced callus organization.</p>

Genetic transformation of Nicotiana tabacum L. by Agrobacterium tumefaciens carrying genes in the melatonin biosynthesis pathway and the enhancement of antioxidative capability in transgenic plants / 生物工程学报

Arylalkylamine N-acetyltransferase (AANAT) and Hydroxyindole O-methyltransferase(HIOMT) are the key regulation enzymes in the melatonin biosynthesis pathway in mammals. The AANAT and HIOMT genes were constructed into a binary plant expression vector YXu55. Using leaf strips as the recipiences, we efficiently transformed tobacco (Nicotiana tabacum) variety qinyan 95 by the Agrobacterium mediated method. After gradient selection with gentamycin, a number of transgenic plants were regenerated. Southern blot and RT-PCR analyses showed that the AANAT-HIOMT genes were integrated into the genome of the transgenic plants and the target genes could express at the level of RNA transcription. By RP-HPLC, we measured the melatonin contents in transgenic plants. The results showed that the melatonin level in YXu55 (containing the gentamycin-resistance gene, the AANAT gene and HIOMT gene) transgenic plants were much higher than those in pZP122 (control containing only the gentamycin-resistance gene) transgenic plants and nontransgenic plants. The content of melatonin in pZP122 transgenic plants was nearly the same as that in nontransgenic plants. Physiological determination of antioxidative characteristics demonstrated that 1) the capacity of total antioxidation, 2) the activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) and 3) the content of glutathione (GSH) were increased in YXu55 transgenic plants containing the AANAT-HIOMT genes as compared to the control plants (pZP122 or nontransgenic plants). At the same time, malonaldehyde (MDA) content did not appear remarkably difference between transgenic plants and nontransgenic plants. The above mentioned facts indicate enhancement of melatonin levels in YXu55 transgenic plants might help to reduce damage by oxidative stress.

Expression of TNF-?,MMP-9 and TIMP-1 in the lesions of psoriasis vulgaris / 西安交通大学学报(医学版)

Objective To study the role of TNF-?,MMP-9 and TIMP-1 in the lesions of psoriasis vulgaris.Methods SABC immunohistochemical technique was used to examine the expression of TNF-?,MMP-9 and TIMP-1 in lesional skin of 40 cases and uninvolved skin of 20 cases of psoriasis and in skin of 20 cases normal controls.Results The expression of TNF-? and MMP-9 was significantly higher in the lesional skin than that in nonlesional skin and normal controls(P0.05).There was a positive correlation between the expression of TNF-? and MMP-9(r=0.471,P