The Expression of Interleukin-17, Interferon-gamma, and Macrophage Inflammatory Protein-3 Alpha mRNA in Patients with Psoriasis Vulgaris

Summary: To investigate the role of Interleukin-17 (IL-17), Interferon-gamma (IFN-γ), and macrophage inflammatory protein-3 alpha (MIP-3α) in the pathogenesis of psoriasis, reverse transcriptase-polymerase chain reaction (RT-PCR) was used to semi-quantitatively analyze the mRNA expression of IL-17, IFN-γ, and MIP-3α in 31 psoriatic lesions and 16 normal skin tissues. The results showed that the mRNA of the three cytokines was present in all specimens. And the expression level of IL-17 mRNA in skin lesions was 1.1416±0.0591, which was significantly higher than that in normal controls (0.8788±0.0344, P<0.001). The expression levels of IFN-γ mRNA were 1.1142±0.0561 and 0.9050±0.0263, respectively, with significant difference(P<0.001). And the expression levels of MIP-3α mRNA in psoriatic lesions was 1.1397±0.0521, which was markedly higher than that in normal controls (0.8681±0.0308, P<0.001). These findings indicate that up-regulated expression of IL-17, IFN-γ, and MIP-3α might be involved in the pathogenesis of psoriasis.

Association of insulin-like growth factor-binding protein-3 with radiotherapy response and prognosis of esophageal squamous cell carcinoma

Background: Insulin?like growth factor?binding protein?3(IGFBP?3) is suggested to predict the radiosensitivity and/or prognosis of patients with esophageal squamous cell carcinoma(ESCC). The present study was designed to investi?gate the clinical and prognostic efects of IGFBP?3 on ESCC.Methods: IGFBP?3 was detected by immunohistochemistry in parain?embedded tissues from 70 ESCC patients treated with radiotherapy alone and further examined by western blotting analysis in 10 pairs of fresh ESCC tissues and adjacent non?malignant esophageal specimens. Receiver operating characteristic(ROC) analysis was used to determine cut?of scores for tumor positivity and to evaluate patient survival status. The χ2 test was performed to analyze the association of IGFBP?3 expression with clinical characteristics and radiotherapy response. Associations between prognostic outcomes and IGFBP?3 expression were investigated using Kaplan–Meier analysis and the Cox proportional hazards model.Results: The threshold for IGFBP?3 positivity was set to greater than 65% [area under the ROC curve(AUC)(45.7%) were deined as having high IGFBP?3 expression= 0.690, P < 0.019]. Of the 70 ESCC patient tissues tested, 32. The levels of IGFBP?3 protein expression were decreased in 70.0%(7 of 10) of ESCC tissues compared with adjacent non?malignant esophageal tissue. In addition, IGFBP?3 expression was associated with pathologic classiication(P < 0.05 for T, N, and M categories and clinical stage). Patients with elevated protein level of IGFBP?3 in the tumor had an improved radiotherapy response and prolonged overall survival(P < 0.001).Conclusions: High level of IGFBP?3 expression in ESCC associates with early clinical stages and are predictive for favorable survival of the patients treated with radiotherapy.

Interplay between micro RNA-17-5p, insulin-like growth factor-Ⅱ through binding protein-3 in hepatocellular carcinoma

AIM: To investigate the effect of microR NA on insulinlike growth factor binding protein-3(IGFBP-3) and hence on insulin-like growth factor-Ⅱ(IGF-Ⅱ) bioavailability in hepatocellular carcinoma(HCC).METHODS: Bioinformatic analysis was performed using microrna.org, DIANA lab and Segal lab softwares. Total RNA was extracted from 23 HCC and 10 healthy liver tissues using mir Vana mi RNA Isolation Kit. microR NA-17-5p(miR-17-5p) expression was mimicked and antagonized in Hu H-7 cell lines using Hi Per Fect Transfection Reagent, then total RNA was extracted using Biozol reagent then reverse transcribed into cD NA followed by quantification of mi R-17-5p and IGFBP-3 expression using Taq Man real-time quantitative PCR. Luciferase reporter assay was performed to validate the binding of miR-17-5p to the 3'UTR of IGFBP-3. Free IGF-Ⅱ protein was measured in transfected Hu H-7 cells using IGF-Ⅱ ELISA kit. RESULTS: Bioinformatic analysis revealed IGFBP-3 as a potential target for miR-17-5p. Screening of miR-17-5p and IGFBP-3 revealed a moderate negative correlation in HCC patients, where mi R-17-5p was extensively underexpressed in HCC tissues(P = 0.0012), while IGFBP-3 showed significant upregulation in the same set of patients(P = 0.0041) compared to healthy donors. Forcing mi R-17-5p expression in Hu H-7 cell lines showed a significant downregulation of IGFBP-3 mR NA expression(P = 0.0267) and a significant increase in free IGF-Ⅱ protein(P = 0.0339) compared to mock untransfected cells using unpaired t-test. Luciferase assay validated IGFBP-3 as a direct target of mi R-17-5p; luciferase activity was inhibited by 27.5% in cells co-transfected with miR-17-5p mimics and the construct harboring the wild-type binding region 2 of IGFBP-3 compared to cells transfected with this construct alone(P = 0.0474).CONCLUSION: These data suggest that regulating IGF-Ⅱ bioavailability and hence HCC progression can be achieved through targeting IGFBP-3 via manipulating the expression of miR NAs.

Increased expression of insulin-like growth factor-binding protein-3 is implicated in erectile dysfunction in two-kidney one-clip hypertensive rats after propranolol treatment

This study aimed to investigate the role of insulin-like growth factor-binding protein-3 （IGFBP-3） in erectUe dysfunction （ED） in two-kidney one-clip （2K-1C） hypertensive rats treated with the β-blocking agent propranolol. Adult male Wistar rats were randomly divided into three groups： a normal control group, a hypertensive control group and a propranolol treatment group （n=9）. After 4 weeks of propranolol treatment, intracavemous pressure （ICP） responses to electrical stimulation of the cavernous nerves were evaluated. The expression of IGFBP-3 and insulin-like growth factor-1 （IGF-1） mRNA and protein in the rat cavernous tissue were detected by quantitative real-time PCR and Western blot, respectively. The concentration of cyclic guanosine monophosphate （cGMP） in the cavernous tissue was determined by enzyme-linked immunosorbent assay （ELISA）. Cavernosal pressure in response to cavernous nerve stimulation was decreased 4 weeks after propranolol treatment （P〈0.01, compared to the hypertensive control group）. IGFBP-3 mRNA and protein expression was increased in the propranolol treatment group compared to the hypertensive control group （P〈O.01）, whereas IGF-1 expression was decreased in the propranolol treatment group compared to the hypertensive control group （P〈0.01）. In addition, cavernous cGMP concentration was decreased in the prepranolol treatment group compared to the hypertensive control group （P〈0.01）. Taken together, these results suggest that the upregulation of IGFBP-3 may play a role in the development of ED in hypertensive rats.

Tribulus terrestris extracts alleviate muscle damage and promote anaerobic performance of trained male boxers and its mechanisms： Roles of androgen, IGF-1, and IGF binding protein-3

Purpose: To investigate the effects of Tribulus terrestris(TT) extracts on muscle mass, muscle damage, and anaerobic performances of trained male boxers and its mechanisms: roles of plasma androgen, insulin growth factor 1(IGF-1), and IGF-1 binding protein-3(IGFBP-3).Methods: Fifteen male boxers were divided into exercise group(E, n = 7) and exercise plus TT group(E + TT, n = 8). The 2 groups both undertook3-week high-intensity and 3-week high-volume trainings separated by a 4-week rest. TT extracts(1250 mg/day) were orally administered by boxers in E + TT group. TT extract compositions were detected by UHPLC–Q-TOF/MS. Before and at the end of the 2 trainings, muscle mass, anaerobic performance, and blood indicators were explored.Results: Compared with E group, decreases of plasma CK(1591.5 ± 909.6 U/L vs. 2719.9 ± 832.5 U/L) and IGFBP-3(3075.5 ± 1072.5 ng/m L vs. 3950.8 ± 479.3 ng/m L) as well as increases of mean power(MP, 459.4 ± 122.3 W vs. 434.6 ± 69.5 W) and MP/body weight(MP/BW, 7.5 ± 0.9 W/kg vs. 7.1 ± 1.1 W/kg) were detected in E + TT group after a high-intensity training. For high-volume training, reduction of IGFBP-3(2946.4 ± 974.1 ng/m L vs. 3632.7 ± 470.1 ng/m L) and increases of MP(508.7 ± 103.2 W vs. 477.8 ± 49.9 W) and MP/BW(8.2 ± 0.3 W/kg vs.7.5 ± 0.9 W/kg) were detected in E + TT group, compared with E group. Muscle mass, blood levels of testosterone, dihydrotestosterone(DHT),and IGF-1 were not signifiantly changed between the 2 groups.Conclusion: Taking 1250 mg capsules containing TT extracts did not change muscle mass and plasma levels of testosterone, DHT, and IGF-1 but significantly alleviated muscle damage and promoted anaerobic performance of trained male boxers, which may be related to the decrease of plasma IGFBP-3 rather than androgen in plasma.

Improved Osteointegration of Ti-6Al-4V-implants of Different Surface Texture by the Use of Bone Morphogenetic Protein-3 (BMP-3)

Half of altogether 60 cylindrical implant devices made of titanium-aluminum-vanadium alloy （ Ti-6Al-4V） were plusna-sprayed with a hydroxyapatite-couting and the other half had a corundum blasted porous surface. 15 implants of each group of the titanium test buplants were coated with 230 μg porcine, high-purified BMP- 3-precipitute per implant. In each case a BMP- 3-couted and an uncoated control-device were implanted into the femoral part of the putellofemoral joint of the right and left leg of 30 adult giant rabbits. Histomorphological and histomorphometrical we found in both groups with BMP- 3-coated test devices an improved osteointegrution. Stutistical evaluation using the t-test for matched samples showed 5 weeks after surgery a significant higher volume of tony formed bone of the BMP- 3-coated corundum- blasted or hydroxyapathe- coated Ti- 6Al- 4 V test devices compared to the non-couted controls of the same t）pe （p 〈 0.01, t-test for matched samples）. In both implant groups with BMP-couting a synergetic effect was verifiable although the bone ongrowth in the hydroxyaputite coated implants was more extensive than in the corundum blasted implants. Light microscopy demonstrated osteointegrution without connective tissue membrane around the surface of the implants. Our results indicate that composite metal implants,as used in endoprosthetics and implantology , are suitable carriers for BMP- 3 and im proved fixation of the implants can be achieved. The hydroxyapatite surface is superior to the corundum-blasted surface with regards to the observed parameters because of its pronounced bioactivity and its osteoconductive characteristics.

Insulin-like growth factor-binding protein-3 inhibits IGF-1-induced proliferation of human hepatocellular carcinoma cells

OBJECTIVE Basic fibroblast growth factor(b FGF)and platelet-derived growth factor(PDGF)produced by hepatocellular carcinoma(HCC)cells are responsible for the cell growth.Accumulating evidence shows that insulin-like growth factor-binding protein-3(IGFBP-3)suppresses HCC cell proliferation in both IGF-dependent and independent manners.The present study is to investigate whether treatment with exogenous IGFBP-3 inhibits bF GF and PDGF production and the cell proliferation of HCC cells.METHODS Cell Counting Kit 8 assay were designed to detect HCC cell proliferation,transcription factor early growth response-1(EGR1)involving in IGFBP-3 regulation of b FGF and PDGF were detected by RT-PCR and Western blot assays.Western blot assay was adopted to detect the IGFBP-3 regulating insulin-like growth factor 1 receptor(IGF-1R)signaling pathway.RESULTS The present study demonstrates that IGFBP-3 suppressed IGF-1-induced b FGF and PDGF expression while it does not affect their expression in the absence of IGF-1.To delineate the underlying mechanism,Western-blot and RT-PCR assays confirmed that the transcription factor early growth response protein 1(EGR1)is involved in IGFBP-3 regulation of b FGF and PDGF.IGFBP-3 inhibition of type 1 insulin-like growth factor receptor(IGF1R),ERK and AKT activation is IGF-1-dependent.Furthermore,transient transfection with constitutively activated AKT or MEK partially blocks the IGFBP-3 inhibition of EGR1,b FGF and PDGF expression.CONCLUSION In conclusion,these findings suggest that IGFBP-3suppresses transcription of EGR1 and its target genes b FGF and PDGF through inhibiting IGF-1-dependent ERK and AKT activation.It demonstrates the importance of IGFBP-3 in the regulation of HCC cell proliferation,suggesting that IGFBP-3 could be a target for the treatment of HCC.

Changes of insulin-like growth factor-Ⅱ and insulin-like growth factor binding protein-3 in cerebrospinal fluid of children with tuberculous meningitis

BACKGROUND： Recent studies have found that insulin-like growth factors （IGFs） and insulin-like growth factor binding protein-3 （IGFBP-3） have stronger neurotrophic and neuroprotective effects. But whether their levels in cerebrospinal fluid could be used as an auxiliary indicator in differentially diagnosing tuberculous meningitis and viral encephalitis is not yet clear. OBJECTIVE： To explore the changes of insulin-like growth factor-Ⅱ （IGF-Ⅱ ） and IGFBP-3 in cerebrospinal fluid （CSF） of children with tuberculous meningitis and the significance of the changes. DESIGN： A non-randomized concurrent controlled study. SETTING： Department of Pediatric Internal Medicine, the First Affiliated Hospital of Xinxiang Medical College. PARTICIPANTS： Thirty children with tuberculous meningitis （14 males and 16 females） were selected from the Department of Pediatric Internal Medicine, the First Affiliated Hospital of Xinxiang Medical College from January 2005 to December 2006. Tuberculous meningitis was diagnosed according to their clinical manifestations, the history of close contact with tuberculosis, typical cerebrospinal fluid changes of tuberculous meningitis, positive tuberculosis antibody and effective antituberculosis treatment. There were 30 children （13 males and 17 females） with viral encephalitis, and viral encephalitis was diagnosed according to epidemiological history, clinical manifestations, conventional and biochemical changes of cerebrospinal fluid, and negative bacteriology judgment. Meanwhile, 30 children （13 males and 17 females） without infectious and central nervous system disease were selected as the control group. Informed consent was obtained from the parents of all the enrolled children. METHODS： ①The lumbar puncture operation was implemented immediately to obtain cerebrospinal fluid （3 mL）. The contents of IGF-Ⅱ and IGFBP-3 were detected with immunoradiometric assay. The concentrations of glucose and protein in cerebrospinal fluid were determined with a dry-chemical method. The number of white blood cells was counted by Fushi Method. ②The Pearson correlation analysis was used to analyze the correlation of the contents of IGF-Ⅱ and IGFBP-3 in cerebrospinal fluid with the leucocyte counting and the concentrations of glucose and protein in cerebrospinal fluid. MAIN OUTCOME MEASURES： The contents of IGF- Ⅱ and IGFBP-3 in cerebrospinal fluid, and their correlation with the leucocyte counting and the concentrations of glucose and protein in cerebrospinal fluid. RESULTS： ①Contents of IGF-Ⅱ and IGFBP-3 in cerebrospinal fluid： The contents of IGF-Ⅱ and IGFBP-3 in cerebrospinal fluid in the tuberculous meningitis group were significantly higher than those in the encephalitis virus group and control group （P 〈 0.05）. There was no significant difference in the contents of IGF- Ⅱ and IGFBP-3 in cerebrospinal fluid between the viral encephalitis group and control group （P 〉 0.05）. ②Correlation： The IGF- Ⅱ and IGFBP-3 contents in cerebrospinal fluid were positively correlated with the protein concentration in cerebrospinal fluid （r =0.821, 0.855, P 〈 0.01）, but negatively with the glucose （r =0.742, - 0.605, P 〈 0.01）. CONCLUSION- ①IGFs and IGVBPs are involved in the pathophysiological process of tuberculous meningitis, as well as the glucose and protein metabolism in cerebrospinal fluid. ②The IGF-Ⅱ and IGFBP-3 contents in cerebrospinal fluid can be used as the auxiliary indicators to differentially diagnose tuberculous meningitis and viral enceohalitis.

Serum measurements of testosterone, insulin-like growth factor 1, and insulin-like growth factor binding protein-3 in the diagnosis of prostate cancer among Korean men

瞄准：为了调查浆液的关系，睾丸激素，像胰岛素的生长因素(IGF )-1 和 IGF 有约束力的蛋白质(IGFBP )-3 在收到了激进的制动火箭的朝鲜的人与前列腺癌症的已知的预示的参数与前列腺癌症风险并且也铺平为临床上局部性的前列腺癌症的阴毛的前列腺切除术(RRP ) 。方法：全部的睾丸激素，免费睾丸激素， IGF-1 和 IGFBP-3 的浆液层次在随后收到了前列腺活体检视的 592 个病人被决定。结果在最后为前列腺癌症收到了 RRP 的病人之间被比较(n= 159 ) 并且没从活体检视与前列腺癌症被诊断的那些(控制组， n= 433 ) 。在前列腺癌症之中仅仅病人，神经质的层次获得了的浆液在与特定的抗原(PSA ) ，病理学的 T 阶段和病理学的格利森获得的浆液前列腺的关系被分析。结果：前列腺癌症病人和控制组没越过不同年龄组关于全部的睾丸激素，免费睾丸激素， IGF-1 和 IGFBP-3 的浆液层次表明重要差别。在癌症之中仅仅病人，没有重要协会与病理学的 T 舞台，病理学的格利森分数和外科手术前的 PSA 为全部的睾丸激素，免费睾丸激素， IGF-1 和 IGFBP-3 层次的浆液层次被观察。结论：我们的数据显示与 IGFBP-3 层次一起的浆液睾丸激素和 IGF-1 的简单数量化离子可能不在朝鲜的人在临床上局部性的前列腺癌症的诊断提供有用临床的信息。另外，我们的结果建议睾丸激素， IGF-1 和 IGFBP-3 的浆液层次可能显著地没在朝鲜的人与临床上局部性的前列腺癌症的已知的预示的因素被联系。

银苓消肿丸联合碳酸氢钠对痛风性关节炎患者骨破坏因子及NLRP3、NF-κB信号通路的影响

目的探讨银苓消肿丸联合碳酸氢钠在痛风性关节炎治疗中的效果及可能机制。方法选取2022年7月至2023年7月该院收治的98例痛风性关节炎患者为研究对象,按照随机数字表法分为对照组与研究组,每组49例,对照组采用碳酸氢钠治疗,研究组在碳酸氢钠基础上联合银苓消肿丸治疗,比较两组临床疗效、关节疼痛、肿胀及活动障碍评分[关节压痛疼痛视觉模拟评分(VAS)、肿胀、活动障碍];比较两组骨破坏因子[破骨细胞分化因子(RANKL)、抗酒石酸酸性磷酸酶-5b(TRACP-5b)、β-胶联降解产物(β-CTX)]、炎症因子[白细胞介素-1β(IL-1β)、肿瘤坏死因子-α(TNF-α)]、核转录因子-κB(NF-κB)、Nod样受体蛋白3(NLRP3)水平,以及不良反应(消化不良、头晕、血压升高、肌肉疼痛)发生情况。结果研究组、对照组总有效率分别为95.92%、77.55%,研究组明显高于对照组,差异有统计学意义(χ^(2)=7.184,P=0.007)。治疗后,两组VAS、肿胀、活动障碍评分均降低,且研究组低于对照组,差异均有统计学意义(P<0.05)。治疗后,两组RANKL、TRACP-5b、β-CTX水平均降低,且研究组低于对照组,差异均有统计学意义(P<0.05)。治疗后,两组IL-1β、TNF-α、NF-κB、NLRP3水平均降低,且研究组低于对照组,差异均有统计学意义(P<0.05)。两组不良反应发生率比较,差异无统计学意义(P>0.05)。结论在痛风性关节炎的治疗中应用银苓消肿丸联合碳酸氢钠能够改善关节症状及功能,降低炎症因子水平,有效调节NLRP3、NF-κB信号通路,临床应用价值较高,值得推广。

多发性骨髓瘤患者的血清PINP、DKK1和SFRP3水平及其临床意义

目的探讨多发性骨髓瘤(MM)患者的血清I型原胶原氨基端前肽(PINP)、dickkopf Wnt信号通路抑制因子1(DKK1)和分泌型卷曲相关蛋白3(SFRP3)水平及其临床意义。方法纳入150例MM患者(MM组)及150健康体检者(对照组)。比较两组研究对象之间、不同临床分期MM患者之间、不同临床疗效MM患者之间的血清DKK1、PINP、SFRP3水平。采用Logistic回归模型分析治疗前血清DKK1、PINP和SFRP3水平与MM患者临床疗效的关系。采用受试者工作特征(ROC)曲线分析治疗前血清DKK1、PINP和SFRP3水平对MM患者临床疗效的预测效能。结果MM组患者治疗前血清DKK1、PINP和SFRP3水平高于对照组(P<0.05);Ⅰ期、Ⅱ期、Ⅲ期MM患者治疗前血清DKK1、PINP、SFRP3水平依次升高(P<0.05);有效组患者治疗前血清DKK1、PINP、SFRP3水平低于无效组(P<0.05)。治疗前血清DKK1、SFRP3、PINP水平升高是影响MM患者临床疗效的独立危险因素(P<0.05)。治疗前血清DKK1和SFRP3水平对MM患者临床疗效无预测价值(曲线下面积<0.5,P>0.05),而治疗前血清PINP水平对MM患者的临床疗效有一定的预测价值(曲线下面积=0.663,P<0.05)。结论MM患者治疗前的血清DKK1、PINP和SFRP3水平高于健康人群,且与疾病严重程度有关,是MM患者临床疗效的影响因素。治疗前血清PINP水平对预测MM患者的临床疗效有一定的价值。

衔接蛋白失能同源物2通过抑制NOD样受体热蛋白结构域相关蛋白3对结核性胸膜炎大鼠炎症和氧化应激的影响

目的:探讨衔接蛋白失能同源物2(DAB2)抑制NOD样受体热蛋白结构域相关蛋白3(NLRP3)对结核性胸膜炎大鼠炎症和氧化应激的影响。方法:按照随机数字法将60只SPF级雄性SD大鼠分为四组,每组40只。除正常对照组外,结核性胸膜炎组、DAB2组和pcDNA-NLRP3组进行建模处理,以第2天是否抽出胸腔积液为模型建立成功。正常对照组不注射结核分枝杆菌H37RV悬液,DAB2组建模后第2天静脉注射AAV9-DAB2质粒,每天1次,连续注射7 d,DAB2+pcDNA-NLRP3组在注射AAV9-DAB2质粒500μg/L的同时注射pcDNA-NLRP380μl,正常对照组和结核性胸膜炎组的大鼠尾静脉注射0.9%氯化钠溶液。进行各组呼吸功能指标测定,收集胸腔积液,记录积液量,观察3、5、7 d的胸腔积液粘连性情况,HE染色观察胸膜组织病理学情况,Western blot检测胸膜组织中肿瘤坏死因子-α(TNF-α)、白细胞介素-8(IL-8)、基质金属蛋白酶1(MMP-1)和MMP-9蛋白表达,荧光探针DCFH-DA分析检测活性氧(ROS)的水平。结果:与正常组相比,结核性胸膜炎组的大鼠的胸腔积液和胸膜厚度明显增加,用力肺活量(FVC)、最大呼气流量(PEF)、用力呼气容积(FEV)0.3和FEV0.3/FVC显著降低,TNF-α、IL-8、MMP-1和MMP-9蛋白表达显著升高,基质金属蛋白酶抑制剂(TIMP-1)蛋白表达显著降低,丙二醛(MDA)水平升高,超氧化物歧化酶(SOD)水平降低,ROS累积量明显升高(均P<0.001);与结核性胸膜炎组相比,DAB2组大鼠胸腔积液和胸膜厚度显著降低,FVC、PEF、FEV0.3和FEV0.3/FVC明显升高,DAB2组大鼠胸膜组织中的TNF-α、IL-8、MMP-1和MMP-9蛋白表达明显降低,TIMP-1水平明显升高,MDA水平降低,SOD水平升高,ROS累积量明显降低(均P<0.001);与DAB2组相比,DAB2+pcDNA-NLRP3组大鼠胸腔积液和胸膜厚度明显升高,FVC、PEF、FEV0.3和FEV0.3/FVC明显降低,DAB2+pcDNA-NLRP3组的TNF-α、IL-8、MMP-1和MMP-9蛋白表达明显升高,TIMP-1蛋白表达显著降低,MDA水平明显升高,SOD水平显著降低,ROS累积量显著升高(均P<0.001),各组大鼠在3、5、7 d的胸腔积液粘连性评分比较采用重复测量设计的方差分析,结果显示,不同时间点的胸腔积液粘连性评分比较差异具有统计学意义(均P<0.001);各组胸腔积液粘连性评分比较差异具有统计学意义(均P<0.001);各组胸腔积液粘连性评分变化趋势比较差异有统计学意义(均P<0.001);与模型组相比,DAB2组大鼠的胸膜内和肺间质内血管充血症状减轻,有少量的纤维组织增生,上皮样细胞团以及凝固型坏死也明显减少,淋巴细胞和中性粒细胞浸润也明显减少;与DAB2组相比,DAB2+pcDNA-NLRP3组大鼠的胸膜内和肺间质内血管充血症状加重,出现的纤维组织增生,上皮样细胞团以及凝固型坏死也明显增多,淋巴细胞和中性粒细胞浸润也明显增加。结论:DAB2通过抑制NLRP3的活性促进胸腔积液的吸收,降低胸膜厚度和粘连发生率,降低炎症反应和氧化应激水平,缓解结核性胸膜炎的进展。

NLRP3炎性小体在治疗性浅低温后处理大鼠心肌缺血-再灌注中的作用

目的 分析NOD样受体热蛋白结构域相关蛋白3(NLRP3)炎性小体在治疗性浅低温(34℃)后处理的大鼠离体心肌缺血-再灌注模型中的作用并探讨其机制。方法 选择清洁级成年雄性SD大鼠60只,7~10周龄,体重250~300 g。采用随机数字表法将大鼠分为五组:空白对照组(S组)、心肌缺血-再灌注组(IR组)、34℃浅低温后处理心肌缺血-再灌注组(MH组)、34℃浅低温后处理心肌缺血-再灌注+3-TYP组(HT组)和34℃浅低温后处理心肌缺血-再灌注+3-TYP+MCC950组(HTM组),每组12只。S组在37℃灌流液平衡灌流大鼠心脏180 min;IR组在37℃灌流液平衡灌流大鼠心脏30 min后,缺血30 min, 37℃灌注液再灌注120 min;MH组在37℃灌流液平衡灌流大鼠心脏30 min后,缺血30 min, 34℃灌注液再灌注120 min;HT组在37℃灌流液平衡灌流大鼠心脏30 min后,缺血30 min,在灌注液中加入沉默信息调节因子2同源蛋白3(sirt3)抑制剂3-TYP后行34℃灌注液再灌注120 min;HTM组在37℃灌流液平衡灌流大鼠心脏30 min后,缺血30 min,在灌注液中加入sirt3抑制剂3-TYP和NLRP3抑制剂MCC950后行34℃灌注液再灌注120 min。再灌注120 min后取离体心脏,采用ELISA法测定灌注后心脏漏液中IL-1β、IL-6浓度,Western blot法检测心肌组织中NLRP3和sirt3蛋白相对含量,1%氯化三苯基四氮唑染色计算心肌梗死面积,HE染色观察心肌病理变化。结果 与S组比较,IR组、MH组、HT组和HTM组再灌注30、60、90、120 min时HR明显减慢,LVSP、dp/dt_(max)明显降低,LVEDP明显升高;心脏漏液中IL-6和IL-1β浓度、心肌梗死面积百分比明显升高(P<0.05);IR组、HT组和HTM组心肌组织中sirt3蛋白含量明显降低,NLRP3蛋白含量明显升高(P<0.05);MH组心肌组织中sirt3和NLRP3蛋白含量明显升高(P<0.05)。与IR组比较,MH组和HTM组再灌注30、60、90、120 min时HR明显增快,LVSP、±dp/dt_(max)明显升高,LVEDP明显降低;心脏漏液中IL-6和IL-1β浓度、心肌梗死面积百分比明显降低(P<0.05);MH组心肌组织中sirt3蛋白含量明显升高,NLRP3蛋白含量明显降低(P<0.05);HTM组心肌组织中NLRP3蛋白含量明显降低(P<0.05)。与MH组比较,HT组再灌注30、60、90、120 min时HR明显减慢,LVSP、±dp/dt_(max)明显降低,LVEDP明显升高;心脏漏液中IL-6和IL-1β浓度、心肌梗死面积百分比、心肌组织中NLRP3蛋白含量明显升高(P<0.05);HT组和HTM组心肌组织中sirt3蛋白含量明显降低(P<0.05)。与HT组比较,HTM组再灌注30、60、90、120 min时HR明显增快,LVSP、±dp/dt_(max)明显升高,LVEDP明显降低;心脏漏液中IL-6和IL-1β浓度、心肌梗死面积百分比、心肌组织中NLRP3蛋白含量明显降低(P<0.05)。结论 治疗性浅低温(34℃)可通过改善离体心脏血流动力学参数、降低IL-6、IL-1β浓度、心肌组织中NLRP3蛋白含量、心肌梗死面积百分比、改善心肌病理学改变,减轻大鼠心肌缺血-再灌注损伤,其机制可能与线粒体介导sirt3通路抑制炎性小体NLRP3的高表达有关。

瑞马唑仑调节HIF-1α/BNIP3信号通路对OGD/R诱导神经细胞自噬和凋亡的影响

目的探讨瑞马唑仑对OGD/R诱导的神经细胞自噬和凋亡的影响及作用机制。方法体外培养小鼠海马神经元细胞(HT22)并进行神经细胞氧糖剥夺/再复氧(OGD/R),筛选实验用瑞马唑仑浓度;将HT22细胞分为对照组、OGD/R组、瑞马唑仑组、2-ME2组、瑞马唑仑+2-ME2组;CCK8法检测5组HT22细胞活力;流式细胞术检测5组HT22细胞凋亡率;透射电子显微镜观察5组HT22细胞自噬小体的形成;Western blot检测5组HT22细胞HIF-1α、BNIP3、LC3-Ⅱ/LC3-Ⅰ的表达。结果确定实验用瑞马唑仑浓度为50μg/mL;与对照组比较,OGD/R组HT22细胞OD450值、HIF-1α、BNIP3、LC3-Ⅱ/LC3-Ⅰ蛋白水平下调,凋亡率上调(P<0.05);与OGD/R组比较,瑞马唑仑组HT22细胞自噬小体增加,OD450值、HIF-1α、BNIP3、LC3-Ⅱ/LC3-Ⅰ蛋白水平上调,凋亡率下调(P<0.05);2-ME2组HT22细胞OD450值、HIF-1α、BNIP3、LC3-Ⅱ/LC3-Ⅰ蛋白水平下调,凋亡率上调(P<0.05)。与瑞马唑仑组比较,瑞马唑仑+2-ME2组HT22细胞自噬小体数量减少,OD450值、HIF-1α、BNIP3、LC3-Ⅱ/LC3-Ⅰ蛋白水平下调,凋亡率上调(P<0.05);与2-ME2组比较,瑞马唑仑+2-ME2组HT22细胞OD450值、HIF-1α、BNIP3、LC3-Ⅱ/LC3-Ⅰ蛋白水平上调,凋亡率下调(P<0.05)。结论瑞马唑仑可通过激活HIF-1α/BNIP3信号通路促进OGD/R诱导的神经细胞自噬,抑制细胞凋亡,从而减轻OGD/R诱导的神经细胞损伤。

电针联合神经减压/地塞米松对面神经受损家兔面神经病变及神经生长因子、Caspase-3表达的影响

目的观察电针联合神经减压/地塞米松对面神经损伤家兔面神经病变及血清神经生长因子(NGF)水平、面神经纤维组织中Caspase-3蛋白表达的影响,探讨其作用机制。方法将120只健康家兔随机分为假手术组、假手术+西医组、假手术+中医组、假手术+中西医组、模型组、模型+西医组、模型+中医组、模型+中西医组,每组15只。除假手术各组外,其余组均制备面神经损伤模型。术后假手术组、模型组不给予干预,假手术+西医组和模型+西医组均每天给予地塞米松1 mg/kg肌肉注射及面神经减压,假手术+中医组和模型+中医组均每天给予电针治疗(每次30 min,连续电针5 d休息2 d为1个周期),假手术+中西医组和模型+中西医组均每天给予地塞米松肌肉注射、面神经减压及电针治疗,各组均干预至术后第21天。分别于术后第1,7,21天检测外周血中NGF水平,HE染色观察面神经病变情况,免疫组化法检测面神经组织中Caspase-3阳性表达情况。结果术后第1,7,21天,模型各组血清NGF水平均明显低于假手术各组(P均<0.05);模型+中西医组血清NGF水平均明显高于模型组、模型+西医组、模型+中医组(P均<0.05),模型+西医组、模型+中医组均明显高于模型组(P均<0.05),模型+西医组与模型+中医组比较差异均无统计学意义(P均>0.05)。术后第1天,模型各组的Caspase-3阳性表达强度评分均明显高于假手术各组(P均<0.05);模型各干预组术后第1,7,21天的Caspase-3阳性表达强度评分均明显高于相应假手术各干预组(P均<0.05);模型+中西医组术后第1天和第7天的Caspase-3阳性表达强度评分均明显低于同期模型组和模型+西医组(P均<0.05),与模型+中医组比较差异均无统计学意义(P均>0.05);模型各组间术后第21天的Caspase-3阳性表达强度评分比较差异均无统计学意义(P均>0.05)。结论电针联合神经减压/地塞米松有促进面神经损伤修复的作用,其机制可能与上调血清NGF水平、下调面神经组织中Caspase-3蛋白的表达有关。

血清IGFBP-3、Gd-IgA1在儿童紫癜性肾炎早期诊断中的应用价值

目的 探索血清胰岛素样生长因子结合蛋白-3(IGFBP-3)及半乳糖缺乏免疫球蛋白A1(Gd-IgA1)联合检测在儿童紫癜性肾炎(HSPN)早期诊断中的应用价值。方法 选取2021年6月至2023年4月在该院确诊的105例首发过敏性紫癜(HSP)患儿作为研究对象,在入院后按照HSP是否累及肾脏将患儿分为HSPN组及无肾炎组(HSP组),同期选择在该院体检的52例健康儿童作为对照组(NC组)。收集3组临床资料,采用酶联免疫吸附试验(ELISA)对血清及尿液中IGFBP-3、Gd-IgA1表达水平进行检测,受试者工作特征(ROC)曲线分析血清IGFBP-3、Gd-IgA1对HSPN的早期诊断价值,多因素Logistic回归分析HSPN早期发生的影响因素。结果 与NC组相比,HSPN组及HSP组的IgA、IgG、补体C3、IgA/C3、白细胞计数(WBC)、红细胞计数(RBC)、血小板计数(PLT)及血清光抑素C(CysC)、血肌酐(sCr)水平显著升高(P<0.05),但HSPN组与HSP组的临床资料差异无统计学意义(P>0.05);HSPN组及HSP组血清IGFBP-3、Gd-IgA1及尿液IGFBP-3/尿肌酐(uCr)、Gd-IgA1/uCr表达水平较NC组显著升高(P<0.05),并且,与HSP组相比,HSPN组血清IGFBP-3、Gd-IgA1及尿液Gd-IgA1/uCr表达水平进一步升高(P<0.05);ROC曲线分析显示,联合IGFBP-3、Gd-IgA1诊断HSPN的曲线下面积(AUC)显著大于IGFBP-3单独诊断的AUC(Z=3.629,P<0.001)和Gd-IgA1单独诊断的AUC(Z=2.274,P=0.023);多因素Logistic回归分析显示,血清CysC、IGFBP-3、Gd-IgA1、尿液Gd-IgA1/uCr是HSPN早期发生的影响因素(P<0.05)。结论 HSPN患儿血清IGFBP-3、Gd-IgA1的表达水平均显著上升,二者是HSPN早期发生的影响因素,血清IGFBP-3、Gd-IgA1水平联合检测对HSPN的早期诊断具有较高的应用价值。

外周血受体相互作用蛋白激酶3、混合系列蛋白激酶样结构域水平与新生儿坏死性小肠结肠炎病情严重程度的关系

目的分析新生儿坏死性小肠结肠炎(NEC)患儿外周血受体相互作用蛋白激酶3(RIPK3)、混合系列蛋白激酶样结构域(MLKL)的表达情况及其与病情严重程度的关系。方法选取92例NEC患儿纳入NEC组,并根据病情严重程度进一步分为轻度NEC组(Ⅰ级)60例和重度NEC组(Ⅱ~Ⅲ级)32例,另选取同期诊治的60例腹股沟斜疝患儿纳入对照组。采用实时荧光定量聚合酶链反应检测外周血RIPK3 mRNA、MLKL mRNA表达;采用Pearson相关分析法明确NEC组外周血RIPK3 mRNA与MLKL mRNA表达的相关性;采用免疫印迹法检测NEC回肠组织和正常回肠组织中RIPK3、MLKL蛋白表达;采用多因素Logistic回归分析明确重度NEC发生的独立危险因素。绘制受试者工作特征曲线,分析外周血RIPK3 mRNA、MLKL mRNA单独及联合预测重度NEC的价值。结果NEC组外周血RIPK3 mRNA、MLKL mRNA相对表达量分别为(2.41±0.52)、(3.03±0.64),高于对照组的(1.02±0.21)、(0.93±0.20),差异有统计学意义(P<0.001)。NEC回肠组织中RIPK3、MLKL蛋白相对灰度值分别为(1.20±0.21)、(1.13±0.24),高于正常回肠组织的(0.34±0.12)、(0.32±0.11),差异有统计学意义(P<0.05)。NEC组患儿外周血RIPK3 mRNA与MLKL mRNA相对表达量呈正相关(r=0.623,P<0.001)。重度NEC组合并气腹征、多器官功能障碍综合征、败血症者占比和RIPK3 mRNA、MLKL mRNA相对表达量均高于轻度NEC组,差异有统计学意义(P<0.05);RIPK3 mRNA、MLKL mRNA相对表达量升高是重度NEC发生的独立危险因素(P<0.05)。外周血RIPK3 mRNA、MLKL mRNA联合预测重度NEC的曲线下面积大于RIPK3 mRNA、MLKL mRNA单独预测(Z=4.127、4.261,P<0.05)。结论RIPK3 mRNA、MLKL mRNA在NEC患儿外周血中表达升高,两者均与NEC病情严重程度有关,且两者联合检测对重度NEC具有较高的预测价值。

抗桥粒芯蛋白1、3抗体及大疱性类天疱疮180、230抗体联合检测诊断大疱性皮肤病的应用价值

目的 探讨抗桥粒芯蛋白1、3(Dsg1、3)抗体及大疱性类天疱疮180、230(BP180、230)抗体联合检测在大疱性皮肤病临床诊断中的应用价值。方法 自2020年3月至2023年1月,纳入郑州大学第一附属医院收治的经组织病理结果、直接免疫荧光检测确诊的大疱性皮肤病患者88例为观察组,选取本院同期健康体检者76名为对照组。分析两组Dsg1、Dsg3、BP180、BP230抗体的阳性检出情况;分析观察组血清Dsg1、Dsg3、BP180、BP230抗体标本诊断类型占比及观察组不同年龄组大疱性皮肤病疾病类型阳性率占比;绘制ROC曲线分析Dsg1、Dsg3、BP180、BP230抗体单一及联合检测对大疱性皮肤病的诊断价值。结果 两组血清Dsg1、Dsg3、BP180、BP230抗体阳性率比较差异具有统计学意义(P<0.05)。据Dsg1、Dsg3、BP180、BP230抗体检测结果,诊断类型:BP、PV、PF、PF+BP、PV+BP阳性率分别为32.95%、20.45%、11.36%、7.95%、3.41%。其中BP阳性率占比最高,PV+BP阳性率占比最低,两者比较差异具有统计学意义(P<0.05)。>60岁组BP阳性率高于≤60岁组,PV及PF阳性率低于≤60岁组,差异有统计学意义(P<0.05)。Dsg1、Dsg3、BP180、BP230抗体联合检测对大疱性皮肤病灵敏度、特异度分别为91.02%、88.66%,AUC(95%CI)为0.821(0.745~0.911),均高于上述抗体单一检测(P<0.05)。结论 Dsg1、Dsg3、BP180、BP230抗体在大疱性皮肤病诊断中具有重要参考价值,且联合检测可提高诊断的准确性;大疱性皮肤病患者年龄和抗体类型之间也存在一定的关联,联合检测Dsg1、Dsg3、BP180、BP230抗体有助于大疱性皮肤病进行更精细的诊断和治疗。

下调PDCD4抑制MAP2K3和p38 MAPK的表达减轻LPS诱导的肾小管上皮细胞炎症和凋亡

目的研究程序性细胞死亡蛋白4(programmed cell death protein 4,PDCD4)在脓毒症诱导的急性肾损伤(acute kidney injury,AKI)中的作用机制,以及调控PDCD4表达通过丝裂原活化蛋白激酶3(mitogen-activated protein kinase 3,MAP2K3)和p38蛋白激酶(p38 mitogen-activated protein kinase,p38 MAPK)对脓毒症AKI起到潜在治疗作用。方法用脂多糖(lipopolysaccharide,LPS)刺激人肾小管上皮细胞(HK-2)构建脓毒症AKI细胞模型。进一步用腺病毒介导siRNA和过表达载体抑制和上调AKI细胞模型中PDCD4的表达;CCK-8法检测细胞增殖;用DCFH-DA及激光共聚焦显微镜检测细胞中ROS水平,用总SOD活性检测试剂和MDA检测试剂盒检测细胞中SOD和MDA水平;免疫共沉淀验证PDCD4和MAP2K3之间的蛋白相互作用;TUNEL染色法检测细胞凋亡;RT-qPCR和Western blot检测PDCD4及相关基因的mRNA和蛋白表达水平;ELISA法检测患者血清中炎症相关因子水平。结果LPS诱导可以促进HK-2细胞中PDCD4表达,下调PDCD4可抑制LPS诱导的HK-2细胞的炎症、氧化应激及细胞凋亡。数据库预测及免疫共沉淀证实PDCD4可以与MAP2K3相互作用,且在LPS诱导的HK-2细胞中,MAP2K3表达水平显著增强。MAP2K3过表达和p38 MAPK激动剂可以减轻PDCD4下调对LPS诱导的细胞炎症和氧化应激的影响并抑制细胞凋亡。结论下调PDCD4可以通过抑制MAP2K3和p38 MAPK从而抑制LPS诱导的肾小管上皮细胞的炎症和凋亡。

入院时血清TGF-β1、Smad2、Smad3、HA、LN、PCⅢ、CⅣ水平与CHB肝纤维化严重程度的相关性及对疾病预后的预测价值

目的探讨入院时血清转化生长因子-β1(TGF-β1)、Smad同源蛋白2(Smad2)、Smad同源蛋白3(Smad3)及透明质酸(HA)、Ⅲ型前胶原(PCⅢ)、层黏连蛋白(LN)、Ⅳ型胶原(CⅣ)水平与慢性乙型肝炎(CHB)肝纤维化严重程度的相关性及联合检测对疾病预后的预测价值。方法选取河南省中医院2021年3月至2022年3月收治的78例CHB肝纤维化患者作为研究组,选择同期78名健康体检者作为对照组。比较研究组和对照组及不同肝纤维化分期、不同炎症活动分级CHB肝纤维化患者入院时血清TGF-β1、Smad2、Smad3、HA、PCⅢ、LN、CⅣ水平;分析入院时血清TGF-β1、Smad2、Smad3、HA、PCⅢ、LN、CⅣ水平与肝纤维化分期、炎症活动分级的相关性。CHB肝纤维化患者治疗3个月后,根据患者预后分为预后良好和预后不良亚组,比较预后良好和预后不良患者入院时血清TGF-β1、Smad2、Smad3、HA、PCⅢ、LN、CⅣ水平;分析入院时血清TGF-β1、Smad2、Smad3、HA、PCⅢ、LN、CⅣ水平联合检测对CHB肝纤维化患者预后不良的预测价值。结果研究组入院时血清TGF-β1、Smad2、Smad3、HA、LN、PCⅢ、CⅣ高于对照组(P<0.05);不同肝纤维化分期、炎症活动分级CHB肝纤维化患者入院时血清TGF-β1、Smad2、Smad3、HA、LN、PCⅢ、CⅣ比较:S1<S2<S3<S4、G1<G2<G3<G4,差异有统计学意义(P<0.05);入院时血清TGF-β1、Smad2、Smad3、HA、LN、PCⅢ、CⅣ水平与肝纤维化分期、炎症活动分级均呈正相关(P<0.05)。预后良好患者入院时血清TGF-β1、Smad2、Smad3、HA、LN、PCⅢ、CⅣ水平均低于预后不良患者(P<0.05);入院时血清TGF-β1、Smad2、Smad3、HA、LN、PCⅢ、CⅣ水平联合预测肝纤维化患者预后不良的曲线下面积(AUC)优于各指标单一检测(P<0.05)。结论CHB肝纤维化患者入院时血清TGF-β1、Smad2、Smad3、HA、PCⅢ、LN、CⅣ水平均呈现高表达,且与肝纤维化分期、炎症活动分级密切相关,其联合检测对CHB肝纤维化患者预后有较高的预测价值,可用于评估CHB肝纤维化患者病情严重程度和预后,为制定针对性治疗措施提供参考。