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Background Endometrial fibrosis, a significant characteristic of intrauterine adhesion (IUA), is caused by the excessive differentiation and activation of endometrial stromal cells (ESCs). Glutaminolysis is the metabolic process of glutamine (Gln), which has been implicated in multiple types of organ fibrosis. So far, little is known about whether glutaminolysis plays a role in endometrial fibrosis. Methods The activation model of ESCs was constructed by TGF-β1, followed by RNA-sequencing analysis. Changes in glutaminase1 (GLS1) expression at RNA and protein levels in activated ESCs were verified experimentally. Human IUA samples were collected to verify GLS1 expression in endometrial fibrosis. GLS1 inhibitor and glutamine deprivation were applied to ESCs models to investigate the biological functions and mechanisms of glutaminolysis in ESCs activation. The IUA mice model was established to explore the effect of glutaminolysis inhibition on endometrial fibrosis. Results We found that GLS1 expression was significantly increased in activated ESCs models and fibrotic endometrium. Glutaminolysis inhibition by GLS1 inhibitor bis-2-(5-phenylacetamido-1,2,4-thiadiazol-2-yl) ethyl sulfide (BPTES or glutamine deprivation treatment suppressed the expression of two fibrotic markers, α-SMA and collagen I, as well as the mitochondrial function and mTORC1 signaling in ESCs. Furthermore, inhibition of the mTORC1 signaling pathway by rapamycin suppressed ESCs activation. In IUA mice models, BPTES treatment significantly ameliorated endometrial fibrosis and improved pregnancy outcomes. Conclusion Glutaminolysis and glutaminolysis-associated mTOR signaling play a role in the activation of ESCs and the pathogenesis of endometrial fibrosis through regulating mitochondrial function. Glutaminolysis inhibition suppresses the activation of ESCs, which might be a novel therapeutic strategy for IUA.
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Objective:To summarize the clinical nursing experience of a patient with retroperitoneal malignant teratoma resection combined with 3D printing prosthesis implantation.Methods:Psychological nursing should be done well before operation to eliminate the anxiety of patients.The application of 3D printed prosthesis model for health education can achieve a good effect of preoperative education. In addition, the preoperative nursing mode of multidisciplinary teamwork was adopted before pain relief and operation. Postoperative complications were closely observed.Continuous care of drainage tube and nursing of 3D printed prosthesis implantation were given.Results:After 23 d treatment and careful nursing, the patient was discharged successfully.Conclusions:The application of multidisciplinary teamwork preoperative nursing model can accelerate recovery of adult patients with retroperitoneal malignant teratoma resection combined with 3D printing prosthesis implantation, which is worthy of clinical learning and promotion.
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@#Objective - ( ) To evaluate the effect of job rotation on pain in wrist work related musculoskeletal disorders WMSDs ( )Methods of physical therapists PTs . A total of 100 PTs from nine medical institutions were selected as the research subjects , using judgment sampling method and they were divided into control group and intervention group by stratified random sampling , method with 50 person in each group. The individuals in control group perform routine works. People in the intervention group were rotated between posts or added mobile shift replacements in daily work for 30 minutes. The duration of intervention was , , ( ) once a day five days a week for ten weeks. Visual Analogue Scale VAS score and pain duration were used as the evaluation , indexes of intervention effect. The changes of indexes before intervention five weeks and ten weeks after intervention were Results , compared between the two groups. Before intervention there was no significant difference in the VAS score and pain ( P ) duration between the control group and the intervention group all >0.05 . There was no significant difference in VAS score ( P ) and pain duration among the control group at three time points after intervention all >0.05 . The VAS score of PTs in the (P ), intervention group at ten weeks was lower than that in the control group at the same time point <0.05 and it was lower than ( P ) that before intervention and at five weeks of intervention in the same group all <0.05 . The pain duration of PTs in the ( P ), intervention group was lower than that in the control group at five and ten weeks after intervention all <0.05 and was lower ( P ) Conclusion , than that before intervention at the same group all <0.05 . Rotating schedule can relieve WMSDs of PTs and the effect of intervention for ten weeks is more effective than that of intervention for five weeks.
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Objective:To evaluate the effect of experiential health education on patients discharged from hospital with the tube after pancreaticoduodenectomy.Methods:A total of 65 patients admitted to the General Surgery Department of Peking University Third Hospital for pancreaticoduodenectomy from September 2020 to August 2021 were selected as the study objects by convenience sampling method. The 31 patients with pancreaticoduodenectomy who received routine education about drainage tube from September 2020 to February 2021 were selected as the control group, and 34 patients with pancreaticoduodenectomy who received experiential health education about drainage tube from March 2021 to August 2021 were selected as the study group. The self-nursing ability and self-management of drainage tube of the patients in both groups were observed.Results:The total score of drainage tube self-care ability, drainage bag fixation score, drainage bag replacement score, drainage fluid dumping score, anti-drainage tube pull score, drainage tube extrusion method score were 10.00(10.00, 10.00), 2.00(2.00, 2.00), 2.00(2.00, 2.00), 2.00(2.00, 2.00), 2.00(2.00, 2.00), 2.00(2.00, 2.00) points, Higher than the control group 5.00(4.00, 5.00), 1.00 (1.00, 1.00) and 1.00 (0.00, 1.00), 1.00 (1.00, 1.00) and 1.00 (1.00, 2.00), 1.00 (1.00, 1.00) points, the differences were statistically significant ( Z values were -7.31--5.78, all P<0.05).In the self-management of drainage tubes in the study group, the drainage tube pulling rate, the incidence of exudation around drainage tubes, and the rate of leakage of drainage fluid registration were 8.82% (3/34), 14.7% (5/34), and 5.88% (2/34), respectively, lower than 61.29% (19/31), 41.94% (13/31), and 87.10% (27/31) in the control group, with statistically significant differences ( χ2=19.94, 6.00, 43.28, all P<0.05). Conclusions:Experiential health education can effectively improve drainage tube self-care ability of patients after pancreaticoduodenectomy, promoting postoperative rehabilitation of patients.
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@#The cooking process may emit toxic compounds and airway irritants from both the fuel combustion and cooking fumes which is harmful to the respiratory health among the restaurant workers. A cross-sectional study of 243 restaurant workers from the selected restaurants in Sungai Long, Malaysia was conducted. The standardized British Medical Research Council questionnaire on Respiratory Symptoms (1986) was used during the interview to access the symptoms and the spirometry test was performed to evaluate the pulmonary functions of the participants. The data of socio-demography and occupational characteristics were also collected. The most complaint respiratory symptoms by the restaurant workers were breathlessness, which accounted for 33.7%, followed by wheezing (14%). The mean values of all pulmonary function tests (PFT) of the restaurant workers were within the normal range (>80%), except for the Peak Expiratory Flow (PEF) (79.09%). The results of the bivariate statistical analysis, Chi-square, ANOVA and t-test, showed the determining factors of the respiratory health among the workers were workers’ age and gender in addition to the working duration and the ethnicity. The restaurant workers in Sungai Long were at risk of developing respiratory symptoms and lower pulmonary function values due to prolonged exposure to cooking fumes. Emphasis should be given to the safety and health of restaurant workers and health education should be provided to the restaurant workers and owners. Strategies to increase notification of such occurrences among these workers should be looked into by related agencies in the country.
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Objective @#To evaluate the effects of transcutaneous electrical nerve stimulation ( TENS ) and waterbirth with Doula services on the outcome of delivery. @*Methods@#From July 2018 to December 2019, 150 primiparas in Hangzhou Women's Hospital were randomly divided into three groups: TENS, waterbirth and control groups. They were given TENS, waterbirth and conventional midwifery, accompanied by Doula services. The visual analogue scores ( VAS ) , length of labor stages and neonatal asphyxia were compared.@*Results@#It finally included 45 cases in the TENS group, 45 cases in the waterbirth group and 44 cases in the control group. There were no significant differences in gestational weeks, age, height, weight, fetal biparietal diameter and newborn birth weight among the three groups ( P>0.05 ) . The VAS scores of TENS group and waterbirth group were lower than those of the control group ( P<0.05 ) , but there were no significant differences between the two groups ( P>0.05 ) with the cervix open to 2.5-3 cm, 5-7 cm ( 0.5 hours later ) and 10 cm. There was no interaction between the analgesia methods and cervix diameter ( P>0.05 ) . The duration of the first stage of labor in the TENS group and the waterbirth group was less than that in the control group ( P<0.05 ) , and there was no significant difference between the TENS group and the waterbirth group ( P>0.05 ) . The asphyxia rate of neonates in TENS group, waterbirth group and control group were 2.22%, 2.22% and 4.55%, respectively, with no significant difference ( P>0.05 ) . @*Conclusion@#Under Doula services, both TENS and waterbirth can effectively relieve the pain of delivery and shorten the first stage of labor, without obvious differences.
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In this study, leftover roots of Sansing green onions grown without toxic chemicals in Sansing Township, Ilan County, Taiwan were used as a raw material of skincare products. The raw material was extracted from the green onion roots by ultrasound in a low-temperature, safe and pollution-free environment. We hope to develop cleansers and other facial care products made of this natural, environmentally friendly, safe and affordable raw material so that people with sensitive skin can also use these products. We also hope that this study can contribute to circular economy and achieve the goal of green innovation by recycling the leftover roots. In terms of anti-oxidation, the DPPH free radical scavenging ability of 2.5 mg/mL green onion root extract was equivalent to 98% of that of 1 mg/mL BHT; the Fe2+ chelating ability was equivalent to 87.0% of that of 0.02 mg/mL EDTA; the superoxide anions scavenging ability of 2.5 mg/mL green onion root extract was equivalent to 84.2% of that of 1 mg/mL BHT and 80.4% of that of 0.05 mg/mL vitamin C. With respect to melanin synthesis inhibition, the green onion root extract's ability to inhibit dopachrome, the intermediate product of melanin, was positively correlated to its concentration, i.e., the higher the concentration of the green onion root extract, the better the inhibition ability. The IC50 of green onion root extract was 1.83 mg/mL, while, for comparison, the IC50 of vitamin C was 0.62 mg/mL. Furthermore, according to the cell survival assay, no obvious cytotoxic effect was found with the increase in the concentration of the green onion root extract. The whitening effect improved after 30 days of test. The improvement rate was 5.6% for 2.5 mg/mL green onion root extract, 3.1% for 1.25 mg/mL extract, and 1.7% for 0.625 mg/mL extract. The moisture retention also improved after 30 days of test. The moisture retention improvement rate was 22.7% for 2.5 mg/mL green onion root extract, 21.6% for 1.25 mg/mL extract, and 15.4% for 0.625 mg/mL extract. Based on the experiments, the green onion root extract obtained from ultrasound not only did not cause skin allergy and irritation but also showed anti-aging, melanin synthesis inhibition, whitening and moisture retention effects. The results showed that the green onion root extract can improve the moisture retention and whitening effect of the mask.
Neste estudo, restos de raízes de cebolinhas Sansing, cultivadas sem produtos químicos tóxicos no município de Sansing, Condado de Ilan, Taiwan, foram utilizadas como matéria-prima de produtos para a pele. A matéria-prima foi extraída das raízes de cebolinha por ultrassom em um ambiente de baixa temperatura, seguro e livre de poluição. Esperamos desenvolver produtos de limpeza e outros produtos para cuidados faciais produzidos com essa matéria-prima natural, ecologicamente correta, segura e acessível, para Improvement rate (%) Moisture retention Whitening effect 7.65 1.29 que pessoas com pele sensível também possam usar esses produtos. Também esperamos que este estudo possa contribuir para a economia circular e alcançar o objetivo da inovação ecológica, reciclando restos das raízes. Em termos de anti-oxidação, a capacidade de sequestro do radical livre DPPH de 2,5 mg/mL de extrato de raiz de cebolinha foi equivalente a 98% de 1 mg/mL de BHT; a capacidade quelante do Fe2+ foi equivalente a87,0% de 0,02 mg/mL de EDTA; a capacidade de sequestro de ânions superóxidos de 2,5 mg/mL de extrato de raiz de cebolinha foi equivalente a 84,2% de 1 mg/mL BHT e 80,4% de 0,05 mg/mL de vitamina C. No que diz respeito à inibição da síntese de melanina, a capacidade do extrato de raiz de cebolinha de inibir o dopacrômio, o metabolito intermediário de melanina, foi positivamente correlacionada com a sua concentração, ou seja, quanto maior a concentração do extrato de raiz de cebolinha, maior a capacidade de inibição. O IC50 de extrato de raiz de cebolinha foi de 1,83 mg/mL, enquanto que, por comparação, o IC50 de vitamina C foi de 0,62mg/mL. Além disso, de acordo com o ensaio de sobrevivência celular, nenhum efeito citotóxico foi observado com o aumento da concentração do extrato de raiz de cebolinha. O efeito de branqueamento melhora após 30 dias de ensaio. A melhoria foi de 5,6% para 2,5 mg/mL de extrato de raiz de cebolinha, 3,1% para 1,25 mg/mL de extrato e 1,7% para 0,625 mg/mL de extrato. A retenção de umidade também melhorou depois de 30 dias de teste. A taxa de melhoria de retenção de umidade foi de 22,7% para 2,5 mg/mL de extrato de raiz de cebolinha, 21,6% para 1,25 mg/mL de extrato, e 15,4% para 0,625 mg/mL de extrato.Com base nas experiências efetuadas, o extrato de raiz de cebolinha obtida por ultrassom não só não causa alergia nem irritação da pele, mas também demonstrou atividade anti-envelhecimento, inibição da síntese de melanina, capacidade de branqueamento e retenção de umidade. Os resultados mostraram que o extrato de raiz de cebolinha pode melhorar a retenção de umidade e efeito de branqueamento da máscara.
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Plant Roots , Onions , Cosmetics , AntioxidantsРеферат
This study aims to develop rice bran-based skin care products with moisturizing, whitening and anti-wrinkle effects similar to Pitera (a natural by-product of sake lees fermentation) but without alcohol irritation for sensitive skin. To achieve this objective, bran from organic indica rice was fermented by lactic acid bacteria in a safe and pollution-free environment. In terms of anti-oxidation, the DPPH ï¼free radical scavenging ability of 100.0 mg/mL bran fermentation solution was 71.4% of that of vitamin C of the same concentration; and its Fe2+ chelating ability was 79.0% of that of EDTA of the same concentration. Moreover, the superoxide anion scavenging ability of 10.0 mg/mL bran fermentation solution was equivalent to 42.9% of that of BHT of similar concentration. With respect to inhibition of melanin synthesis, the bran fermentation solution's ability to inhibit the synthesis of dopachrome, the intermediate of melanin, was positively correlated to its concentration, i.e., the higher the concentration of the bran fermentation solution was, the better the inhibition ability was. The IC50 of bran fermentation solution was 9.23 mg/mL while, for comparison, that of arbutin was 0.52 mg/mL. Furthermore, according to the cell survival assay, no obvious cytotoxic effect was found with the increase of the concentration of the bran fermentation solution. As for whitening evaluation, the whitening improvement rate was 9.29% in 20% dilution, 5.36% in 15% dilution, 3.69% in 10% dilution, 2.43% in 5% dilution, 0.35% in 1% dilution in a 30-day test. In the moisturizing evaluation, the moisturizing improvement rate was 44.31% in 20% dilution, 20.48% in 15% dilution, 7.68% in 10% dilution, 6.02% in 5% dilution and 2.02% in 1% dilution. Based on the experimental results, the alcohol-free rice bran fermentation solution not only did not cause irritation but also had antiaging, melanin synthesis inhibition, whitening and moisturizing effects. Therefore, it is advisable to add rice bran fermentation solution to cleaning mousse, shower gel, serum and essence to turn bran from compost of agricultural waste (cradle to grave) into a natural raw material (cradle to cradle) of the cosmetic industry, creating new value of rice bran.
Este estudo tem como objetivo desenvolver produtos de cuidados com a pele baseados em farelo de arroz com hidratação, branqueamento e efeitos antiarrugas semelhantes à Pitera (um subproduto natural da fermentação de sauces), mas sem irritação com álcool para a pele sensível. Para alcançar esse objetivo, o farelo do arroz indica orgânico foi fermentado por bactérias do ácido lático em um ambiente seguro e livre de poluição. Em termos de antioxidação, a capacidade de eliminação radical de DPPH.free de 100,0 mg / mL de solução de fermentação de farelo foi de 71,4% da vitamina C da mesma concentração; E sua capacidade de quelação Fe2 + foi de 79,0% da EDTA da mesma concentração. Além disso, a capacidade de eliminação de aniões superóxido de 10,0 mg / mL de solução de fermentação de farelo era equivalente a 42,9% da BHT de concentração similar. Com relação à inibição da síntese de melanina, a capacidade da solução de fermentação do farelo de inibir a síntese do dopachrome, o intermediário da melanina, correlacionou-se positivamente com sua concentração, ou seja, quanto maior a concentração da solução de fermentação do farelo, melhor a capacidade de inibição estava. A solução de IC50 de fermentação de farelo foi de 9,23 mg / mL enquanto que, para comparação, a arbutina era de 0,52 mg / mL. Além disso, de acordo com o ensaio de sobrevivência celular, nenhum efeito citotóxico óbvio foi encontrado com o aumento da concentração da solução de fermentação de farelo. Quanto à avaliação do branqueamento, a taxa de branqueamento foi de 9,29% na diluição de 20%, 5,36% na diluição de 15%, 3,69% na diluição de 10%, 2,43% na diluição de 5%, 0,35% na diluição de 1% em um teste de 30 dias . Na avaliação hidratante, a taxa de melhora hidratante foi de 44,31% em 20% de diluição, 20,48% em diluição de 15%, 7,68% em diluição de 10%, 6,02% em diluição de 5% e 2,02% em diluição a 1%. Com base nos resultados experimentais, a solução de fermentação de farelo de arroz sem álcool não só não causou irritação, mas também teve anti-envelhecimento, inibição da síntese de melanina, branqueamento e efeitos hidratantes. Portanto, é aconselhável adicionar solução de fermentação de farelo de arroz para mousse de limpeza, gel de banho, soro e essência para transformar o farelo do composto de resíduos agrícolas (berço a túmulo) em uma matéria-prima natural (berço para berço) da indústria de cosméticos, criando Novo valor do farelo de arroz.
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Bacteria , Efficacy , Lactic Acid , Cosmetics , FermentationРеферат
OBJECTIVE@#This study aimed to evaluate the clinical effect of periodontal microscopic surgery on the augmentation of attached gingiva and determined the clinical principle on how to use minimally invasive surgery to improve the surgery success rate.@*METHODS@#Twenty patients with insufficient attached gingiva around implants were selected. Periodontal microscopic surgery for free gingival graft was performed to increase the width of the attached gingiva around the implants. The survival state of the free gingiva was observed after surgery, and the width of the attached gingiva around the implants was recorded before and after surgery and 1 year after surgery. The shrinkage rate of the free gingival flap 1 year after surgery was analyzed to evaluate the stability of the flap.@*RESULTS@#The flaps of the 20 cases all survived. One year after the operation, the width of the attached gingiva was (3.05±0.44) mm, which increased compared with that of preoperation (2.56±0.31) mm and decreased compared with that of postoperative day (2.13±0.28) mm. The shrinkage rate of the attached gingiva was 41.22%±5.04%.@*CONCLUSIONS@#The application of microscopic surgery on the augmentation surgery of attached gingiva can increase the success rate and improve the quality and quantity of attached gingiva around implants.
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Humans , Dental Implants , Gingiva , General Surgery , Microsurgery , Oral Surgical Procedures , Surgical FlapsРеферат
The occlusion design of dental implants is related to the growing popularity of dental implantology. This paper discusses the occlusion design of the edentulous implant prosthesis and the relationships between stress change and the alveolar bone and between the occlusal design and implantation complications. The horizontal relationship of condyle, the design of the canine-guided occlusion, and the similarities and differences between the dental implant and the natural teeth on biteforce response are mentioned.
Тема - темы
Humans , Alveolar Bone Loss , Dental Implantation, Endosseous , Dental Implants , Dental Occlusion , Dental Prosthesis Design , Dental Prosthesis, Implant-Supported , Dental Restoration Failure , Jaw, Edentulous , Jaw, Edentulous, PartiallyРеферат
OBJECTIVE To investigate how MLKL functions on the membrane and explore its electrophysiological characters and structure. METHODS The full-length human MLKL were expressed in SF21 cells and purified using glutathione-sepharose affinity chromatography. The currents of purified MLKL proteins were recorded in avoltage-clamp mode using a Warner BC-535 bilayer clamp amplifier. The currents were digitized using pCLAMP 10.2 software. HEK293 cells were cultured and transfected with MLKL plasmid. Cell viability was examined using the CellTiter- Glo Luminescent Cell Viability Assay kit. RESULT MLKL forms cation channels that are permeable preferentially to Mg2+ rather than Ca2+ in the presence of Na+ and K+. Moreover,each MLKL monomer contains five transmembrane helices:H1, H2, H3 , H5 and H6 of the N-terminal domain which is sufficient to form channels. Finally, MLKL-induced membrane depolarization and cell death exhibit a positive correlation to its channel activity.
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Objective To explore the clinical application of laparoscopic splenectomy in treatment of spleen disease at our hospital.Methods We reviewed laparoscopic splenectomy carried out at our hospital since 1995,patients were grouped by date.63 laparoscopic splenectomies were divided into six groups.Operation time,intraoperative blood loss,postoperative hospital stay,time to feeding,days of drainage,amount of drainage,postoperative complications and indications for surgery were compared.Results Patient's age averaged at 44.19 years,body mass index averaged at 23.75,3 patients were converted to open surgery.Mean operating time,blood loss,postoperative hospital stay,time to feeding,converting rate in the 53 cases which had the surgery after 2003 were much better than the 10 cases before 2003.Surgical indications for laparoscopic splenectomy were limited to hematopoietic disease related splemegaly before 2003,the indication range significantly expanded after 2003,during which laparoscopic splenectomy were mainly applied to treat spleen tumors.Conclusions There is a marked learning curve in laparoscopic splenectomy after 10 surgeries before 2003 we have achieved the level.With the suitable approach,apparatus and skillful technique,laparoscopic splenectomy is safe and feasible to treat tumors of the spleen.
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In the present study, a novel plant transformation system for Doritaenopsis and Phalaenopsis has been developed. The pollen-mediated activation tagging system was established by artificial pollination. The pollens, co-cultured with Agrobacterium tumefaciens strain EHA105 harbouring an activation tagging vector (pTAG-8), were used for pollination. In order to optimize the transformation efficiency, several factors (concentration of A. tumefaciens, concentration of acetosyringone during co-cultivation and the duration of co-cultivation) known to influence Agrobacterium-mediated DNA transfer were examined. A concentration of 0.5-1 x 10(8) CFU/ml for A. tumefaciens, 0.1 mM acetosyringone, and 6 hrs of co-culture period were found to be the optimal condition for high transformation efficiency. Integration of T-DNA into the genome of putative transgenic plants was confirmed by PCR and DNA blot analyses. Single copy of the transgene was observed in all transgenic plants analyzed. Most of the transgenic plants had a morphologically normal phenotype and the overall capsule formation efficiency was similar to control plant. Our results showed a new approach of genetic transformation in orchids and this method can be employed for genetic improvement of the orchids.
Тема - темы
Agrobacterium tumefaciens , Orchidaceae/genetics , Pollination , DNA Transposable Elements/genetics , Polymerase Chain Reaction , Transformation, GeneticРеферат
The remodeling process of synapses and eurotransmitter receptors of facial nucleus were observed. Models were set up by facial-facial anastomosis in rat. At post-surgery day (PSD) 0, 7, 21 and 60, synaptophysin (p38), NMDA receptor subunit 2A and AMPA receptor subunit 2 (GIuR2) were observed by immunohistochemical method and emi-quantitative RT-PCR, respectively. Meanwhile, the synaptic structure of the facial motorneurons was observed under a transmission electron microscope (TEM). The intensity of p38 immunoreactivity was decreased, reaching the lowest value at PSD day 7, and then increased slightly at PSD 21. Ultrastructurally, the number of synapses in nucleus of the operational side decreased, which was consistent with the change in P38 immhnoreactivity. NMDAR2A mRNA was down-regulated significantly in facial nucleus after the operation (P00<0.05), whereas AMPAR2 mRNA levels remained unchanged (P>0.05). The synapses innervation and the expression of NMDAR2A and AMPAR2 mRNA in facial nucleus might be modified to suit for the new motor tasks following facial-facial anastomosis, and influenced facial nerve regeneration and recovery.
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Sequence comparison showed that residues Thr407, Asp433, and Met464 in the small subunit of Escherichia coli gamma-glutamyltranspeptidase (EcGGT) were conserved in the aligned enzymes. In this study, we further investigated the functional significance of these conserved residues by site-directed mutagenesis. The wild-type and mutant enzymes were overexpressed in the recombinant E. coli M15 cells and purified to near homogeneity by Ni2+-NTA resin. Except M464L, other mutants had shown no GGT activity under enzyme assay conditions and activity staining. Furthermore, mutations on these residues impaired the capability of autocatalytic processing of the enzyme. Based on these observations, it is concluded that these residues play an important role in the enzyme maturation.
Тема - темы
Amino Acid Sequence , Amino Acids/genetics , Conserved Sequence , Escherichia coli/genetics , Escherichia coli Proteins/genetics , Molecular Sequence Data , Mutagenesis, Site-Directed/methods , Mutation , gamma-Glutamyltransferase/geneticsРеферат
Chemokine receptor expression has been shown to be associated with the differentiation of T helper cells. The CCR3, CXCR4 and CCR5 expression on circulating T cells were studied in 30 house dust mite sensitive-patients with allergic diseases and in another 30 healthy controls. The expression was analyzed in CD4, CD8 and double negative (DN) T cells by triple fluorescence staining. In addition, intracellular cytokine staining was performed in the CCR3+ CD4+ T cells. Increased circulating portions of CCR3+ CD4+ T cells and CCR3+ DN T cells were found in these patients (p < 0.01). There was no statistically significant difference in the expression of CXCR4 and CCR5 on T cells. The follow-up data of the patients did not show a statistically significant change in the CCR3 expression. IL-4 was expressed within CCR3+ CD4+ T cells upon activation. The IL-4 secreting CCR3+ type 2 T helper cells may play a pathogenetic role in immune responses of house dust mite-sensitive Chinese patients with allergic diseases.
Тема - темы
Adolescent , Adult , Animals , CD4-Positive T-Lymphocytes/immunology , Dust/immunology , Female , Humans , Hypersensitivity/immunology , Interleukin-4/metabolism , Male , Middle Aged , Mites/immunology , Receptors, CCR3 , Receptors, Chemokine/metabolism , Taiwan , Th2 Cells/immunologyРеферат
The anti-C1q antibody has been shown to be associated with lupus patients with renal involvement. We conducted a study to determine the relationship between the serum anti-C1q titer and the renal deposition of C1q. The serum anti-C1q was measured in 26 healthy controls and 47 systemic lupus erythematosus (SLE) patients who were divided into 2 groups as non-nephritis and nephritis SLE. We analyzed the relationship between the anti-C1q titers and SLE, renal C1q staining and the WHO classification for lupus nephritis. The result revealed that the serum anti-C1q was present in 50.8% of the SLE patients, that its levels in those with renal involvement were significantly higher than in the normal control group (61.540 +/- 87.720 U/ml vs 15.750 +/- 2.530 U/ml, p = 0.005). Besides, the serum anti-C1q levels were higher in the patients with lupus nephritis with C1q deposition in the kidney tissue (66.038 +/- 91.141 U/ml vs 16.652 +/- 3.097 U/ml, p < 0.01). There seems to be evidence supporting that the autoantibody anti-C1q might play a pathogenic role in lupus nephritis.