Glutamine supplementation attenuates intestinal apoptosis by inducing heat shock protein 70 in heatstroke rats

BACKGROUND:Heatstroke is the most hazardous heat-related illness and has a high fatality rate.We investigated whether glutamine supplementation could have a protective effect on heatstroke rats.METHODS:Twenty-five 12-week-old male Wistar rats(weight 305±16 g)were randomly divided into a control group(n=5),heatstroke(HS)group(n=10),and heatstroke+glutamine(HSG)group(n=10).Seven days before heat exposure,glutamine(0.4 g/[kg·d])was administered to the rats in the HSG group by gavage every day.Three hours after heat exposure,serum samples were collected to detect white blood cells,coagulation indicators,blood biochemical indicators,and inflammatory cytokines in the rats.The small intestine tissue was stained to analyze pathological structural changes and apoptosis.Finally,immunohistochemistry and Western blotting were used to analyze the expression levels of heat shock protein 70(HSP70).Multiple comparisons were analyzed by using one-way analysis of variance,and the Bonferroni test was conducted for the post hoc comparisons.RESULTS:After heat exposure,the core temperature of the HS group(40.65±0.31°C)was higher than the criterion of heatstroke,whereas the core temperature of the HSG group(39.45±0.14°C)was lower than the criterion.Glutamine supplementation restored the increased white blood cells,coagulation indicators,blood biochemical indicators,and inflammatory cytokines that were induced by heatstroke to normal levels.The intestinal mucosa was injured,and the structure of tight junctions was damaged in the HS group;however,the structure of intestinal mucosal epithelial cells was stable in the HSG group.Glutamine supplementation alleviated intestinal apoptosis and up-regulated HSP70 expression.CONCLUSION:Glutamine supplementation may alleviate intestinal apoptosis by inducing the expression of HSP70 and have a protective effect on heatstroke rats.

超重/肥胖合并2型糖尿病患者血清ANGPTL4、HSP70、IL-34水平与胰岛素抵抗的相关性

目的 探讨超重/肥胖合并2型糖尿病(T2DM)患者血清血管生成素样蛋白4(ANGPTL4)、热休克蛋白(HSP)70、白细胞介素-34(IL-34)水平与胰岛素抵抗的相关性。方法 选取2020年5月—2022年5月保定市第一中心医院T2DM患者182例(T2DM组)。参考相关诊断标准,将T2DM患者分为超重/肥胖T2DM组(90例)和体重正常T2DM组(92例)。另选取同期健康体检者90名作为正常对照组,其中超重/肥胖者40名(超重/肥胖对照组)、体重正常者50名(体重正常对照组)。检测所有研究对象血清ANGPTL4、HSP70、IL-34、胰岛素和血糖水平,计算稳态模型胰岛素抵抗指数(HOMA-IR)。T2DM患者治疗3个月后,再次检测其血清ANGPTL4、HSP70、IL-34水平和HOMA-IR。采用Pearson相关分析评估血清ANGPTL4、HSP70、IL-34与HOMA-IR的相关性。结果 与正常对照组和体重正常T2DM组比较,超重/肥胖T2DM组血清ANGPTL4和HSP70显著降低(P<0.05),血清IL-34和HOMA-IR显著升高(P<0.05)。与正常对照组比较,体重正常T2DM组血清ANGPTL4和HSP70显著降低(P<0.05),血清IL-34和HOMA-IR显著升高(P<0.05)。Pearson相关分析结果显示,血清ANGPTL4、HSP70与HOMA-IR呈负相关(r值分别为-0.733、-0.758,P<0.001),IL-34和HOMA-IR呈正相关(r=0.705,P<0.001)。治疗后,超重/肥胖T2DM组和体重正常T2DM组血清ANGPTL4和HSP70均明显升高,血清IL-34和HOMA-IR明显降低;且相对于超重/肥胖T2DM组,体重正常T2DM组血清ANGPTL4和HSP70升高更显著(P<0.05),血清IL-34和HOMA-IR降低更显著(P<0.05)。结论 超重/肥胖合并T2DM患者ANGPTL4、HSP70和IL-34与胰岛素抵抗显著相关,或可作为超重/肥胖合并T2DM的疗效监测指标。

Correlation between clinicopathology and expression of heat shock protein 70 and glucose-regulated protein 94 in human colonic adenocarcinoma

AIM: To investigate the correlation between clinicopathology and expression of heat shock protein 70 (HSP70) and glucose-regulated protein 94 (grp94) in human colonic carcinoma. METHODS: The expression of HSP70 and grp94 was studied in 80 human colonic cancers with or without metastasis as well as in their adjacent mucous membrane by way of immunohistochemistry and pathology photograph analysis. RESULTS: The expression of HSP70 and grp94 was significantly higher in cancer than that in adjacent mucous membrane (92.5%, 85.0% vs 56.3%, 42.5%, P<0.01). HSP70 and grp94 expressed higher in moderately- and poorly-differentiated colonic cancers than that in their adjacent tissues (93.7%, 87.5%; 100%, 90% vs56.3%, 42.5%;P<0.01). Dukes C and D stages of colonic cancers showed higher positive rates than Dukes A and B stage groups (97.1%, 91.2%; 100%, 90.9%; vs 80%, 70%; 78.6%, 71.4%; P<0.05). There were definite differences in HSP70 and grp94 expression between metastasis groups and non-metastasis groups (100% vs 75%, 100% CONCLUSION: The HSP70 and grp94 expression rates in colonic cancer groups are significantly higher than that in their adjacent mucous membrane. The HSP70 and grp94 expression in poorly-differentiated colonic cancers with metastasis is significantly higher than well-differentiated cancers without metastasis. The overexpression of HSP70 and grp94 can be used as diagnostic or prognostic markers for colonic cancer.

Heat shock protein 70 antisense oligonucleotide inhibits cell growth and induces apoptosis in human gastric cancer cell line SGC-7901

AIM: Heat shock protein (HSP)70 is over-expressed in human gastric cancer and plays an important role in the progression of this cancer. We investigated the effects of antisense HSP70 oligomer on human gastric cancer cell line SGC-7901, and its potential role in gene therapy for this cancer.METHODS: Human gastric cancer cell line SGC-7901 was treated in vitro with various concentrations of antisense HSP70 oligonucleotides at different intervals. Growth inhibition was determined as percentage by trypan blue dye exclusion test. Extracted DNA was electrophoresed on agarose gel, and distribution of cell cycle and kinetics of apoptosis induction were analyzed by propidium iodide DNA incorporation using flow cytometry, which was also used to detect the effects of antisense oligomer pretreatment on the subsequent apoptosis induced by heat shock in SGC-7901 cells. Proteins were extracted for simultaneous measurement of HSP70 expression level by SDS-PAGE Western blotting.RESULTS: The number of viable cells decreased in a doseand time-dependent manner, and ladder-like patterns of DNA fragments were observed in SGC-7901 cells treated with antisense HSP70 oligomers at a concentration of 10 μmol/L for 48 h or 8 μmol/L for 72 h, which were consistent with inter-nucleosomal DNA fragmentation. Flow cytometric analysis showed a dose- and time-dependent increase in apoptotic rate by HSP70 antisense oligomers. This response was accompanied with a decrease in the percentage of cells in the G1 and S phases of the cell cycle, suggesting inhibition of cell proliferation. In addition, flow cytometry also showed that pretreatment of SGC-7901 cells with HSP70 antisense oligomers enhanced the subsequent apoptosis induced by heat shock treatment. Western blotting demonstrated that HSP70 antisense oligomers inhibited HSP70 expression, which preceded apoptosis, and HSP70 was undetectable at the concentration of 10 μmol/L for 48 h or 8 μmol/L for 72 h.CONCLUSION: Antisense HSP70 oligomers can abrogate HSP70 expression in SGC-7901 cells, which may in turn induce apoptosis and inhibit cell proliferation, conversely suggesting that HSP70 is required for the proliferation and survival of human gastric cancer cells under normal conditions.

Influence of Tanshinone lla on heat shock protein 70,Bcl-2 and Bax expression in rats with spinal ischemia/reperfusion injury

Tanshinone lla is an effective monomer component of Danshen, which is a traditional Chinese medicine for activating blood circulation to dissipate blood stasis. Tanshinone Ila can effectively improve brain tissue ischemia/hypoxia injury. The present study established a rat model of spinal cord ischemia/reperfusion injury and intraperitoneally injected Tanshinone lla, 0.5 hour prior to model establishment. Results showed that Tanshinone Ila promoted heat shock protein 70 and Bcl-2 protein expression, but inhibited Bax protein expression in the injured spinal cord after ischemia/reperfusion injury. Furthermore, Nissl staining indicated a reduction in nerve cell apoptosis and fewer pathological lesions in the presence of Tanshinone Ila, compared with positive control Danshen injection.

Expression and significance of heat shock protein 70 and glucose-regulated protein 94 in human esophageal carcinoma

AIM: To investigate the expression and significance of heat shock protein 70 (HSP70) and glucose-regulated protein 94 (grp94) in human esophageai carcinoma and adjacent normal tissues. METHODS: The expression of HSP70 and grp94 in 78 human esophageai cancer and adjacent normal tissues was studied by immunohistochemistry and pathology photograph analysis. RESULTS: Both esophageai cancer and adjacent normal tissues could express HSP70 and grp94. Of the 78 cases of esophageai carcinoma, 95.0%(72/78) showed positive HSP70, mainly stained in nuclei, while grp94 was mainly stained in cell plasma, and the positive rate was 71.8% (56/78).There was a significant difference in the expression of HSP70 and grp94 between esophageai cancer and adjacent normal tissues (P<0.01). Compared with adjacent normal tissues, there was a significant difference between differential types and HSP70 expression (P<0.01). CONCLUSION: HSP70 and grp94 express differently in cell plasma and nuclei. The expression intensity of HSP70 is related to the differentiation of esophageai carcinoma.

Radiofrequency ablation,heat shock protein 70 and potential anti-tumor immunity in hepatic and pancreatic cancers:a minireview

BACKGROUND: Radiofrequency ablation (RFA) is a minimally invasive surgical procedure which has widespread popularity in the treatment of hepatic and pancreatic cancers. Increased evidence indicates that RFA stimulates anti-tumor immunity, possibly through the induction heat shock protein 70 (HSP70) expression. HSP70 has the capacity to affect the immunogenicity of tumor cells, to chaperone antigenic peptides and deliver these into antigen presentation pathways within antigen-presenting cells, and to activate and regulate innate and adaptive immunity, which makes it useful in immunotherapeutic strategies for the treatment of cancers. DATA SOURCES: An English-language literature search was conducted using MEDLINE (1991-2010) on anti-tumor immunity, heat shock protein 70, radiofrequency ablation, hepatic cancer, pancreatic cancer, and other related subjects. RESULTS: RFA has an increasing application in the surgical treatment of hepatic and pancreatic cancers. Increased evidence indicates that RFA can induce the expression of HSP70 which possesses properties that enable it to influence a variety of immunological processes. Tumor-derived HSP70 is regarded as a potent adjuvant facilitating presentation of tumor antigens and induction of anti-tumor immunity. CONCLUSIONS: This review addresses the potential association of RFA, HSP70, and anti-tumor immunity in treatment of hepatic and pancreatic cancers. To establish direct evidence of a potential association of RFA, HSP70, and anti-tumor immunity in hepatic and pancreatic cancers, further investigations should be conducted.

Co-expression of heat shock protein 70 and glucose-regulated protein 94 in human gastric carcinoma cell line BGC-823

AIM:To investigate the co-expression and significance of heat shock protein 70 (HSP70) and glucose-regulated protein 94 (grp94) in human gastric carcinoma cell line BGC-823. METHODS: The expression and localization of HSP70 and grp94 in human gastric carcinoma cell line BGC-823 were determined by immunocytochemistry and indirect immunofluorescence cytochemical staining. Flow cytometry was used to analyze the correlation between expression of HSP70, grp94 and cell cycle in BGC-823 cell line. RESULTS: Gastric cancer cell line BGC-823 expressed high level of HSP70 and grp94. The positive rate of HSP70 and grp94 was 84.9±4.94% and 79.6±5.16%, respectively. Both of them were stained in cell plasma. There was a significant difference compared with control group (1.9±0.94%, P<0.01). During the cell cycle, HSP70 and grp94 were continuously expressed in BGC-823. CONCLUSION: HSP70 and grp94 are highly expressed in human gastric carcinoma BGC-823 cells through the whole cell cycle. There is no relationship between expression of HSP70, grp94 and cell cycle.

Heat shock protein 70 chaperoned alpha-fetoprotein in human hepatocellular carcinoma cell line BEL-7402

AIM: To investigate the interaction between heat shock protein 70 (HSP70) and α-fetoprotein (AFP) in human hepatocellular carcinoma (HCC) cell line BEL7402.METHODS: The expression and localization of HSP70 and AFP in human HCC cell line BEL-7402 were determined by immunocytochemistry and indirect immunofluorescence cytochemical staining. The interaction between HSP70 and AFP in HCC cells was analyzed by immunoprecipitation and Western blot.RESULTS: Immunocytochemical staining detection showed that HCC cell BEL-7402 expressed a high level of HSP70 and AFP synchronously. Both were stained in cell plasma.AFP existed in the immunoprecipitate of anti-HSP70 mAb,while there was HSP70 in the immunoprecipitate of antiAFP mAb.CONCLUSION: HSP70 chaperones AFP in human HCCcell BEL-7402. The interaction between HSP70 and AFP in human HCC cell can be a new route to study the pathogenesis and immunotherapy of HCC.

Expression of Heat Shock Protein 70 and 27 in Non-small Cell Lung Cancer and Its Clinical Significance

The heat shock proteins （HSPs） 70 and HSP 27 expression in patients with non-small cell lung cancer （NSCLC） was studied and the relation.ship between HSP 70 and HSP 27 with the clinicopathological features of NSCLC was investigated. The expression of HSP 70 and HSP 27 was detected in tumor tissues from 60 patients with NSCLC by S-P immunohistochemistry. The findings were analyzed in combination with the histological types, histopathological differentiation, lymph node metastasis, patients＇ clinical stages, smoking history and gender. The results showed that of the 60 NSCLC tissue specimens studied, the immunoreactivity of HSP 70 and HSP 27 was detected in 47 （78.3 %） and 43 （71.7 %） specimens, respectively. A positive correlation was found between the overexpression of HSP 70 and HSP 27. The histopathological differentiation, lymph node metastasis, clinical stages and smoking history were correlated to the expression of HSP 70, but not to the expression of HSP 27. No statistical significance was observed in histological types and gender with respect to both HSP 70 and HSP 27 expression. It is suggested that the HSP 70 expression is a powerful and significant prognostic indicator and is related to histopathological differentiation, lymph node metastasis, patients＇ clinical stages, smoking history, whereas HSP 27 expression is not.

STUDY ON THE ANTI-TUMOR EFFICACY INDUCED BY HEAT SHOCK PROTEIN 70-PEPTIDE COMPLEXES DERIVED FROM TUMOR CELLS

OBJECTIVE: To study the efficacy and explore the mechanism of the anti-tumor immunity elicited by heat shock protein 70-peptide complexes (HSP70-PC) derived from tumor cells. METHODS: Cells culture, flow cytometric analysis, affinity chromatography for protein purification, SDS-PAGE, Western-blotting and animal experiment were used. RESULTS: HSP70-PC immunization rendered protective effect to both naive tumorl-bearing mice. All of the naive mice obtained complete resistance to Hcaf cell attack; 40% of the tumor-bearing mice survived for over 90 days, whereas the mice of control group died within 2 weeks (P

Effects of moxibustion on heat-shock protein 70 expression in the spinal cord and colonic mucosa in a rat model of ulcerative colitis

Pathological changes in the colon are closely associated with the spinal cord, and innervation of spinal cord can regulate cellular functions. Our previous studies verified that moxibustion protects and restores the colonic mucosa, but the mechanisms of action remain unknown. The present study observed the effects of moxibustion and salicylazosulfapyridine on expression of heat-shock protein 70 （HSP70） and its mRNA in the spinal cord and colonic mucosa of ulcerative colitis rats. Results demonstrated that moxibustion and salicylazosulfapyridine increased HSP70 mRNA expression in the spinal cord and colonic mucosa of ulcerative colitis rats. The decreased transcriptional activity of HSP70 in the spinal cord and colonic mucosa might participate in damage to the colonic mucosa in ulcerative colitis rats. Moxibustion exerted protective effects on colonic mucosa by up-regulating HSP70 transcriptional activity in the spinal cord and colonic mucosa.

Polymorphism of heat shock protein 70-2 and enterocutaneous fistula in Chinese population

AIM: To investigate whether the heat shock protein 70-2 (HSP70-2) polymorphism is associated with enterocutaneous fistulas in a Chinese population.

Cytotoxic T-lymphocytes response in vitro activated by dendritic cells pulsed with heat shock protein 70 derived from human bladder tumor cell lines of EJ

Objective： To investigate whether human dendritic cells （DC） derived from peripheral blood mononuclear cells （PBMC）, which were pulsed by heat shock protein 70 （HSP70） isolated from human bladder tumor cell lines of E J, were able to induce peptide specific cytotoxic T-lymphocytes （CTL） response in vitro and give the experimental foundation for the future clinical trials of immunotherapy in bladder tumor. Methods： The E J-derived HSP70 co-cultured with DC from the healthy volunteers＇ PBMC, along with the crude lysate （the supematant before HSP70 purification） from EJ cells were used as the experimental groups and DC not pulsed by any tumor cells antigen were the blank control. The autologous T-lymphocytes were added into the above various DC groups, and after incubation, the stimulation indexes （SI） and interferon-y （IFN-γ） were detected to evaluate the immune activities of various DC groups. The killing effects of CTL to target cells, EJ and Hela cells, were determined with 51^Cr releasing test. Results： Both DC/HSP70 and DC/the crude lysate could effectively activate CTL in vitro and kill target cells EJ. The killing effect of DC/HSP70 to EJ was much stronger than DC/the crude lysate （the supernatant before HSP70 purification） （P 〈 0.05）. DC without any tumor cell antigens had a lower killing power to EJ. Meanwhile, DC/ HSP70 had little killing power to Hela non-relevant to bladder tumor histopathologically as compared with EJ cells （P 〈 0.05）. Conclusion： The DC pulsed by HSP70 derived from the autologous tumor cells could induce a peptide complexes specific CTL response to tumor cells, and the CTL response induced by the DC/HSP70 was stronger, which display the basis of the possible clinical application of DC/HSP70 for bladder tumor.

Effect of electro-acupuncture on the expression of heat shock protein-70 gene in rat spinal cords following spinal cord injury

BACKGROUND： It is generally believed that the mechanism by which heat shock protein-70 （HSP70） protects cells is related to its effectiveness in maintaining the normal stereochemical structure of intracellular proteins, and in participating in the process of cell apoptosis. Whether electro-acupuncture participates in HSP70 expression and produces neuroprotective effects remain unclear. OBJECTIVE： This study aimed at detecting HSP70 expression after electro-acupuncture in rats with transected spinal cord, in order to further validate the mechanism of electro-acupuncture-induced effects in the treatment of spinal cord injury. DESIGN： A controlled observational experiment. SETTING： Shanghai University of Traditional Chinese Medicine and Toho University, School of Medicine. MATERIALS： Seventy adult male Sprague-Dawley rats of SPF grade, weighing 200± 20 g, were provided by the Laboratory Animal Center of Shanghai University of Traditional Chinese Medicine, with permission No. SYXK （hu） 2004 - 2005. The animals were handled in accordance with the requests from Animal Ethics Committees for guidance. A G6805-2 multiple purpose treatment machine was used （Shanghai Medical Instruments High-Tech Co.,Ltd., Shanghai, China）. METHODS： This study was carried out in the state level laboratories of Shanghai University of Traditional Chinese Medicine and Toho University, School of Medicine between January 2005 and July 2007. The rats were randomly divided into the electro-acupuncture treated group, which received electro-acupuncture treatment in addition to spinal cord surgery and the control group, which received only spinal cord surgery, with 35 rats in each group. All the rats underwent the same surgery consisting of spinal cord transection at the T10 level. If the spinal cord was completely transected and the two posterior limbs were completely paralyzed, then the surgery was considered successful and the animal was kept for further analysis and testing. After surgery, rats in the experimental group were electro-acupunctured with a G6805-2 multiple purpose treatment machine. Two needle electrodes were inserted under the T7 and T10 spinal processes, The treatment was administered once a day for 20 minutes. Rats in the control group were not given any treatment after surgery. Five rats were sacrificed separately in each group on days 1, 2, 3, 7, 14, 21 and 28 after surgery. HSP70 gene expression at the site of lesion was located and quantitatively analyzed by immunohistochemistry and real-time PCR methods. Simultaneously, the spinal cord injury region and neurons were observed by HE and Klüver-Barrera stainings. MAIN OUTCOME MEASURES： （1）HSP70 gene expression in the spinal cord injury region. （2） The number of neurons in the spinal cord injury region. RESULTS： Seventy rats were involved in the final analysis. （1）At the end of each pre-determined block of time, HSP70 mRNA level in the spinal cord injury region of rats in the electro-acupuncture treated group was significantly higher than that in the control group （P 〈 0.05）. HSP70 gene expression in the two groups reached peak levels on day 2 after surgery. （2） On days 7, 14, 21 and 28 after surgery, the number of neurons in the spinal cord injury region in the electro-acupuncture treated group was significantly higher than that in the control group （P 〈 0.05）. CONCLUSION： Electro-acupuncture can effectively enhance HSP70 expression in the spinal cord injury region. HSP70 may participate in this apparent neuroprotective effect.

HSP70基因对B6-Co小鼠眼睑成纤维细胞生物学功能的影响

为了研究热休克蛋白70(HSP70)基因对C57BL/6J-角膜混浊(B6-Co)小鼠眼睑成纤维细胞生物学功能的影响,本试验将前期研究并验证的siRNA-HSP70转染C57BL/6J(B6)小鼠眼睑成纤维细胞敲低HSP70基因,体外构建HSP70基因过表达载体转染B6-Co小鼠眼睑成纤维细胞过表达HSP70基因,通过实时荧光定量PCR和Western blot验证转染效率;CCK8法检测B6和B6-Co小鼠眼睑成纤维细胞的增殖水平;Annexin V-FITC法检测B6和B6-Co小鼠眼睑成纤维细胞的凋亡水平,Transwell试验检测B6-Co小鼠眼睑成纤维细胞的迁移能力。结果显示,B6-Co小鼠眼睑成纤维细胞转染HSP70基因过表达载体后,HSP70在mRNA和蛋白水平的表达均极显著提高(P<0.01);siRNA-HSP70组B6小鼠成纤维细胞增殖水平极显著低于siRNA-NC组(P<0.01),凋亡水平显著高于siRNA-NC组(P<0.05或P<0.01);pcDNA3.1-HSP70质粒转染组B6-Co小鼠成纤维细胞增殖水平和细胞迁移能力均极显著高于pcDNA3.1-NC组(P<0.01),凋亡水平极显著低于pcDNA3.1-NC组(P<0.01)。结果表明,B6-Co小鼠眼睑成纤维细胞转染过表达质粒后,HSP70基因表达显著提高,并显著促进细胞增殖和迁移,抑制细胞凋亡;B6小鼠眼睑成纤维细胞中敲低HSP70基因表达后,抑制细胞增殖,促进细胞凋亡;故HSP70表达水平显著影响成纤维细胞的生物学行为。

Enhancing the treatment effects of tumor cell purified autogenous heat shock protein 70-peptide complexes on HER-3-overexpressing breast cancer

Objective The aim of this study was to enhance the treatment effect of tumor purified autogenous heat shock protein 70-peptide complexes(HSP70-PCs)on HER-3-overexpressing breast cancer.Methods In this study,we first studied the expression of HER-3 in breast cancer tissues and its relationship with patient characteristics.We then purified HSP70-PCs from primary breast cancer cells with different HER-2 and HER-3 expression profiles and determined the cytotoxicity of autogenous dendritic cells(DCs)and CD8+T cells induced by these complexes.Third,recombinant human HSP70-HER-3 protein complexes were used to inhibit the autogenous HSP70-PCs purified from HER-3-overexpressing breast cancer cells,and the resulting immunological response was examined.Results The results show that HSP70-PCs can be combined with recombinant HSP70-HER-3 protein complexes to induce stronger immunological responses than autogenous HSP70-PCs alone and that these treatments induce autogenous CD8+T cell killing of HER-3-positive breast cancer cells.Conclusion These findings provide a new direction for HSP70-DC-based immunotherapy for patients with HER-3-overexpressing breast cancer.

子宫内膜癌患者血清YKL-40、HSP70、iNOS的水平及意义

目的分析子宫内膜癌(EC)患者血清甲壳质酶蛋白40(YKL-40)、热休克蛋白70(HSP70)、诱导型一氧化氮合酶(iNOS)的水平及意义。方法选取2021年4月至2023年4月华北理工大学附属医院收治的116例EC患者作为EC组,另选取同期在华北理工大学附属医院治疗的子宫内膜增生患者116例作为子宫内膜增生组,并将同期在华北理工大学附属医院进行体检的体检健康者116例作为对照组。比较各组血清YKL-40、HSP70、iNOS水平;比较不同临床特征EC患者血清YKL-40、HSP70、iNOS水平。采用受试者工作特征(ROC)曲线分析血清YKL-40、HSP70、iNOS水平对EC的诊断价值。采用多因素Logistic回归分析EC发生的影响因素。结果EC组患者血清YKL-40、HSP70、iNOS水平均高于对照组和子宫内膜增生组(P<0.05);对照组与子宫内膜增生组间血清YKL-40、HSP70、iNOS水平比较,差异均无统计学意义(P>0.05)。FIGO分期Ⅲ+Ⅳ期、淋巴结转移、深层浸润、低分化的EC患者血清YKL-40、HSP70、iNOS水平均高于FIGO分期Ⅰ+Ⅱ期、淋巴结未转移、浅层浸润、高分化的EC患者(P<0.05)。ROC曲线分析结果显示,YKL-40、HSP70、iNOS单独及3项联合检测诊断EC的AUC分别为0.810(95%CI:0.754~0.867)、0.810(95%CI:0.754~0.866)、0.826(95%CI:0.771~0.881)、0.913(95%CI:0.877~0.950),3项联合检测诊断EC的AUC大于YKL-40、HSP70、iNOS单项检测诊断EC的AUC(Z=2.971,P=0.003;Z=2.971,P=0.003;Z=2.571,P=0.010)。多因素Logistic回归分析结果显示,血清YKL-40、HSP70、iNOS水平升高均是EC发生的危险因素(P<0.05)。结论在EC患者中,血清YKL-40、HSP70、iNOS水平均明显升高,且与EC患者临床病理特征密切相关,有望成为筛查EC患者的血清标志物。

慈苓化浊方对痛风大鼠滑膜组织环氧化酶-2、热休克蛋白70表达的影响

目的:分析慈苓化浊方对痛风大鼠滑膜组织中环氧化酶-2(COX-2)、热休克蛋白70(HSP70)表达的影响。方法:选取50只SPF级SD大鼠,10只大鼠作为对照组,另外40只建立痛风模型,将30只建模成功的大鼠分为模型组、药物对照组、慈苓化浊方组,每组10只。观察各组大鼠组织病理学、关节肿胀度、COX-2、HSP70表达、炎症因子、磷脂酰肌醇3-激酶(PI3K)/蛋白激酶B(AKT)/叉头框转录因子O亚族1(FoxO1)通路相关因子及其mRNA表达量。结果:与对照组相比,模型组、药物对照组、慈苓化浊方组关节肿胀度、COX-2、肿瘤坏死因子-α(TNF-α)、白介素-1β(IL-1β)、白介素-6(IL-6)、PI3K mRNA、AKT mRNA、FoxO1 mRNA表达量升高,HSP70 mRNA、Caspase-3 mRNA表达量降低(均P<0.05)。与模型组相比,药物对照组、慈苓化浊方组关节肿胀度、COX-2、TNF-α、IL-1β、IL-6、PI3K mRNA、AKT mRNA、FoxO1 mRNA表达量降低,HSP70 mRNA、Caspase-3 mRNA表达量升高(均P<0.05)。与药物对照组相比,慈苓化浊方组关节肿胀度、COX-2、TNF-α、IL-1β、IL-6、PI3K mRNA、AKT mRNA、FoxO1 mRNA表达量降低,HSP70 mRNA、Caspase-3 mRNA表达量升高(均P<0.05)。结论:采用慈苓化浊方干预痛风大鼠,可降低大鼠关节肿胀程度,降低滑膜组织COX-2、HSP70表达,抑制炎症反应,其作用机制可能与抑制PI3K/AKT/FoxO1通路有关。

血清CF-6、HSP-70表达对慢性心力衰竭患者病情及预后的评估价值

目的探究血清线粒体偶联因子-6(CF-6)、热休克蛋白70(HSP-70)表达对慢性心力衰竭(CHF)患者病情及预后的评估价值。方法选取2020年12月至2021年12月我院收治的CHF患者106例(CHF组),根据美国纽约心脏病协会(NYHA)心功能分级标准分为:NYHAⅡ级36例(Ⅱ级组),NYHAⅢ级38例(Ⅲ级组),NYHAⅣ级32例(Ⅳ级组);根据预后情况分为预后良好组54例,预后不良组52例;选择同期我院体检健康的106例志愿者为对照组。采用酶联免疫吸附测定(ELISA)法检测血清中CF-6、HSP-70的表达水平;多因素Logistic回归分析影响CHF预后的危险因素;受试者工作特征(ROC)曲线分析血清中CF-6、HSP-70对CHF预后的评估价值。结果与对照组相比,CHF组血清中CF-6、HSP-70表达水平显著升高(P<0.05)。CHF患者Ⅳ级组血清CF-6、HSP-70表达水平显著高于Ⅱ级组和Ⅲ级组,Ⅲ级组表达水平显著高于Ⅱ级组(P<0.05)。与预后良好组相比,预后不良组CF-6、HSP-70水平显著升高(P<0.05)。预后不良组血肌酐水平显著高于预后良好组(P<0.05)。多因素Logistic回归分析显示,CF-6、HSP-70、血肌酐表达水平是影响CHF预后的危险因素;ROC分析显示,血清CF-6、HSP-70水平联合预测CHF预后的AUC高于CF-6、HSP-70单独预测的AUC值(P<0.05)。结论CHF患者血清CF-6、HSP-70表达水平显著升高,并随着病情加重而升高,二者对CHF患者的预后评估有一定的临床价值。