Efficacy of recombinant human osteoprotegerin combined with tinidazole in the treatment of periodontitis mice and its correlation with serum RANKL and MCP-1 levels

Objective: To investigate the effect of recombinant human osteoprotegerin combined with tinidazole on mice with periodontitis and the effect on serum RANKL and MCP-1 levels. Methods: 80 SPF-cleaned mice were randomly divided into 4 groups, 20 each, model group, tinidazole group and recombinant human osteoprotegerin group were modeled by Kimura et al., and tinidazole group received tinidazole. After intragastric administration, the recombinant human osteoprotegerin group was injected with recombinant human osteoprotegerin in the periodontal pocket according to the tinidazole group. The periodontal changes of the four groups of mice were observed and recorded, and the gingival rating was performed. Epithelial tissue morphology was observed by hematoxylin-eosin (HE) staining. Serum levels of IL-4, IL-6, RANKL and MCP-1 were measured by enzyme-linked immunosorbent assay. Results:After the intervention, the model group developed severe inflammatory reactions, including redness, hemorrhage, and deep periodontal pockets. The teeth were significantly loosened. The mice in the tinidazole group and the recombinant human osteoprotegerin group recovered substantially, and the gingival rating of the recombinant human osteoprotegerin group was better than that. The tinidazole group and the model group (P<0.05). The results of HE staining showed that the model group had edema, vasodilation and a large amount of inflammatory infiltration. The epithelial structure of the mice in the tinidazole group and the recombinant human osteoprotegerin group was intact and arranged closely and orderly. After intervention, the IL-4 in the tinidazole group and the recombinant human osteoprotegerin group was significantly higher than the model group and IL-6 was significantly lower than the model group (P<0.05), and the recombinant human osteoprotegerin group IL-4 was significantly higher after the intervention. IL-6 was significantly lower in the tinidazole group than in the tinidazole group (P<0.05). After the intervention, the tinidazole group and the recombinant human osteoprotegerin group were significantly reduced, and the recombinant human osteoprotegerin group RAKNL and MCP-1 were significantly lower than the model group (P>0.05). Conclusion: Recombinant human osteoprotegerin combined with tinidazole has a better therapeutic effect on gums and teeth in mice with periodontitis, and can lower the levels of RAKNL and MCP-1 in serum, inhibit bone resorption and protect teeth.

Development of novel-nanobody-based lateral-flow immunochromatographic strip test for rapid detection of recombinant human interferon a2b

Recombinant human interferon a2b(rhIFNa2b)is widely used as an antiviral therapy agent for the treatment of hepatitis B and hepatitis C.The current identification test for rhIFNa2b is complex.In this study,an anti-rhIFNa2b nanobody was discovered and used for the development of a rapid lateral flow strip for the identification of rhIFNa2b.RhIFNa2b was used to immunize an alpaca,which established a phage nanobody library.After five steps of enrichment,the nanobody I22,which specifically bound rhIFNa2b,was isolated and inserted into the prokaryotic expression vector pET28a.After subsequent purification,the physicochemical properties of the nanobody were determined.A semiquantitative detection and rapid identification assay of rhIFNa2b was developed using this novel nanobody.To develop a rapid test,the nanobody I22 was coupled with a colloidal gold to produce lateral-flow test strips.The developed rhIFNa2b detection assay had a limit of detection of 1 mg/mL.The isolation of I22 and successful construction of a lateral-flow immunochromatographic test strip demonstrated the feasibility of performing ligand-binding assays on a lateral-flow test strip using recombinant protein products.The principle of this novel assay is generally applicable for the rapid testing of other commercial products,with a great potential for routine use in detecting counterfeit recombinant protein products.

小儿豉翘清热颗粒联合重组人干扰素喷雾剂治疗EV71感染手足口病患儿的疗效及对核因子-κB、炎症因子的影响

目的:研究小儿豉翘清热颗粒联合重组人干扰素(rhIFN)-α2b喷雾剂治疗EV71病毒感染手足口病(HFMD)患儿疗效及对核因子-κB(NF-κB)、炎症因子的影响。方法:回顾性分析我院收治的130例被EV71病毒感染的轻症HFMD患儿的临床资料及随访资料,根据治疗方法不同将患儿分为对照组和观察组各65例,对照组采用rhIFN-α2b治疗,观察组在对照组治疗基础上加用小儿豉翘清热颗粒治疗,比较两组患儿临床疗效,症状消退时间,治疗前后NF-κB、白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)、IL-10水平变化,肝肾功指标及药物不良反应。结果:与对照组比较,观察组临床疗效更高(P<0.05);观察组症状消退时间均短于对照组(P<0.05);与治疗前比较,两组患儿治疗后血清NF-κB、TNF-α、IL-6、IL-10水平均有所降低,且观察组低于对照组(P<0.05);两组患儿治疗前后丙氨酸氨基转移酶(ALT)、天冬氨酸氨基转移酶(AST)、肌酐(Cr)及尿素氮(BUN)水平均为正常范围,但观察组治疗前后肝肾功能指标差值低于对照组(P<0.05);两组患儿均未发现明显药物不良反应。结论:小儿豉翘清热颗粒联合rhIFN-α2b喷雾剂治疗EV71病毒致儿童HFMD,能够有效提高治疗疗效,降低NF-κB、炎症因子,且对肝肾功能指标影响小,安全性高,值得临床推广应用。

Study on pharmacodynamics of recombinant interferon α-2b suppository

Objective To investigate the antiviral activity of recombinant interferonα-2b suppository(IFNα-2b)in vivo and in vitro.Methods The cytopathic-effect inhibition assay was applied in this study to investigate the antiviral activity of this drug as well as yingtelong and axiluowei as positive control.The guinea pig model of vaginitis and skin infection caused by HSV-2 infection were established,treated with IFNα-2b suppository at dosages of 60000、180000、540000 IU,using IFNα-2b injection 180000 IU·kg-1 as controls.Score the pathological changes of appearance and skin,the virus activities of vaginal secretion and tissue sections of viginae were assayed after treatment.Results The TD50 of IFN α-2b and yingtelong for Vero cells was(>100)μg·mL-1 and(>100000)IU·mL-1,respectively.The IC50 of IFN α-2b and yingtelong and axiluowei for Herpes virus type 1 was(0.29±0.08)μg·mL-1 and(185.0±28.8)IU·mL-1 and(0.19±0.03)μg·mL-1,respectively.The mean scores for vaginal and skin lesion of the treated groups were lower than those of untreated group.Among these concentrations,the IFNα-2b suppository of 540000 IU·kg-1 group.Showed highest anti-viral activity.The virus activity in vaginal secretion of treated group was lower than that of untreated group too(P<0.01 or P<0.05).Tissue sections of viginae after treatment with IFNα-2b suppository showed significantly therapeutical effects on the degrees of vaginal lesion.At the same dosage,The anti-HSV activity of IFNα-2b suppository was also compared with IFNα-2b injection,the results showed that the activity of suppository of 540000 IU·kg-1 group was similar to that of the injection.Conclusions The IFNα-2b suppository has anti-viruses function both in vivo and in vitro.

SYNERGIC CYTOTOXICITY TO GASTRIC CANCER CELLS BY COMBINED USE OF TRICHOSANTHIN ANDRECOMBINANT INTERFERON α-2B

Objective To investigate a new approach of the combined use of trichosanthin (TCS) andrecombinant interferon alpha - 2b (rIFN α- 2b) against digestive system cancer cells. Methods Detect separatelythe cytotoxicity of TCS, rIFN α- 2b and their combination against digestive system cancer cell SGC- 7901.Results In the experiment in vitro, TCS, rIFN α- 2b both had direct, dose dependent cytotoxicity againstSGC - 7901. Their combined use demonstrated a toxicity signijicantly higher than that of the two drugs used alone,showing a signilicant synergic effect. This synergic cytotoxicity was confirmed in the animal experiment.Conclusion Combined use of TCS and rIFN α - 2b decreases the therapeutic dose of TCS and its toxic adverseellect, and this synergic effect is favorable to the clinical use of TCS protein against gastric cancer.

基于JAK/STAT信号通路探究重组人干扰素α-2b联合乙酰半胱氨酸治疗毛细支气管炎患儿喘息反复发作效果及机制

目的 基于Janus激酶(JAK)/信号转导与转录活性因子(STAT)信号通路探究重组人干扰素α-2b联合乙酰半胱氨酸治疗毛细支气管炎患儿喘息反复发作效果及机制。方法 选取2020年3月—2022年2月收治的毛细支气管炎患儿156例,依据治疗方案不同分为观察组和对照组2组各78例。观察组予重组人干扰素α-2b联合乙酰半胱氨酸治疗,对照组予乙酰半胱氨酸治疗。比较2组治疗7 d后临床效果及症状和体征消失时间、住院时间,治疗前及治疗7 d后JAK/STAT信号通路关键蛋白[干扰素调节因子9(IRF9)、信号转导与转录活性因子1(STAT1)和信号转导与转录活性因子2(STAT2)]表达及相关细胞因子[白细胞介素-6(IL-6)、基质金属蛋白酶-9(MMP-9)和组织型金属蛋白酶抑制物-1(TIMP-1)]、辅助性T细胞17(Th17)、调节性T细胞(Treg)水平,以及治疗期间不良反应发生率、治疗后6个月喘息复发率。结果 治疗7 d后,观察组总有效率、IRF9、STAT1、STAT2表达和Treg水平高于对照组;IL-6、MMP-9、TIMP-1和Th17水平低于对照组(P<0.01)。观察组咳嗽、喘憋、喘息、湿啰音消失时间及住院时间均短于对照组(P<0.01)。治疗期间,2组不良反应总发生率比较差异无统计学意义(P>0.05)。治疗后6个月,观察组喘息复发率低于对照组(P<0.01)。结论 重组人干扰素α-2b联合乙酰半胱氨酸治疗毛细支气管炎患儿喘息反复发作效果显著,可促进症状、体征消失,加速康复进程,降低喘息反复发作风险;机制可能为其抑制IL-6释放,激活JAK/STAT信号通路,促使Th17向Treg转化,增强机体免疫应答,且调控MMP-9、TIMP-1表达,减轻支气管及肺损伤。

重组人干扰素α-1b联合大剂量丙种球蛋白治疗重症手足口病合并病毒性脑炎的疗效

目的探究重组人干扰素α-1b联合大剂量丙种球蛋白治疗重症手足口病(HFMD)合并病毒性脑炎的临床效果。方法选取2014年2月至2017年4月宜宾市第二人民医院收治135例HFMD并病毒性脑炎患儿,按随机数字表法分为对照A组(重组人干扰素α-1b)、对照B组(大剂量丙种球蛋白)及观察组(重组人干扰素α-1b+大剂量丙种球蛋白),各45例。比较三组患儿疗效、治疗后血清胰岛素样生长因子-1(IGF-1)、白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)、S100B、神经特异性烯醇化酶(NSE)水平及血清T细胞亚群水平变化情况。结果观察组总有效率(93. 33%)高于对照A组、B组(73. 33%、73. 56%),差异有统计学意义(P <0. 05)。治疗后,观察组CD3^+、CD4^+、CD4^+/CD8^+、CD8^+改善程度大于对照A、B组,血清IGF-1、IL-6、TNF-α、S100B、NSE改善程度大于对照A、B组,差异均有统计学意义(P <0. 05)。三组患儿不良反应发生率比较,差异无统计学意义(P> 0. 05)。结论重组人干扰素α-1b联合大剂量丙种球蛋白治疗重症HFMD并病毒性脑炎患儿疗效显著,能显著提高患儿免疫功能,减轻机体炎性反应,缓解脑损伤,调节IGF-1水平。

重组人干扰素α-2b联合拉米夫定治疗慢性乙型肝炎120例疗效观察

目的研究重组人干扰素α-2b(安达芬)联合拉米夫定(LAM)对慢性乙型肝炎患者的疗效。方法将120例慢性乙型肝炎患者按1:1比例随机分为2组:联合组给予重组人干扰素α-2b和LAM治疗;单用组给予LAM治疗,疗程均为1年。结果治疗1年后,联合组血清HBV-DNA转阴率和HBeAg/抗HBe转换率均高于单用组(P均<0.05),单用组YMDD变异率高于联合组(P均<0.05)。结论重组人干扰素α-2b(安达芬)联合拉米夫定(LAM)治疗的1年疗效优于单用拉米夫定。

rhIL-12联合HBsAg刺激健康人外周血单核细胞对IL-12R的影响

目的确认重组人白细胞介素12(rhIL-12)联合乙型肝炎表面抗原(HBsAg)可增强健康人外周血单核细胞(PBMC)产生特异性细胞免疫应答,并分析其细胞来源,及对IL-12R的影响,探讨hIL-12联合HBsAg作为治疗型乙型肝炎疫苗的应用前景。方法 8名健康人PBMC分别与rhIL-12(1 ng/mL)、rHBsAg(500 ng/mL)和rhIL-12(1ng/mL)+rHBsAg(500 ng/mL)体外孵育,采用流式细胞术检测CD4+IFN-γ(γ-干扰素)+T细胞、CD8+IFN-γ+T细胞及CD56+IFN-γ+NK细胞百分比,并测定表达IL-12Rβ1、IL-12Rβ2的细胞百分比。结果 rhIL-12与rHBsAg联合组CD8+IFN-γ+T细胞及CD56+IFN-γ+NK细胞百分比均较对照组明显升高,且有非常显著差异(P<0.01),联合组CD8+IL-12Rβ1和CD56+IL-12Rβ1与单用rhIL-12或rHBsAg组比较均显著升高。结论提示rhIL-12联合rHBsAg诱生的IFN-γ主要来自CD56+NK细胞、CD8+T细胞,其次是CD4+T细胞;rhIL-12和rHBsAg单独均能上调健康人PBMCs表面IL-12R的表达,rhIL-12与rHBsAg联合具有增强作用。

HBsAg联合rhIL-12对慢性乙型肝炎患者PBMC诱生IFN-γ的作用

目的确认重组人白细胞介素12(rhIL-12)联合乙型肝炎表面抗原(HBsAg)可增强慢性乙型肝炎患者外周血单个核细胞(PBMC)对HBsAg产生特异性细胞免疫应答,探讨rhIL-12联合HBsAg作为治疗型乙型肝炎疫苗的应用前景。方法取8名正常人和16例慢性乙型肝炎患者的PBMC,分别用不同浓度的HBsAg、rhIL-12单独体外刺激,再用HBsAg联合rhIL-12(0.01、0.1和1.0ng/mL)刺激患者PBMC,72h后用酶联免疫吸附试验(ELISA)测定培养上清中的γ干扰素(IFN-γ)。结果HBsAg或rhIL-12单独刺激仅产生低水平的IFN-γ,联合使用HBsAg和rhIL-12刺激后,患者PBMC产生的IFN-γ平均水平显著高于单独使用HBsAg或rhIL-12(P均<0.05)。HBsAg(0.5μg/mL)联合rhIL-12(0.01、0.1和1.0ng/mL)刺激患者PBMC产生的IFN-γ与rhIL-12的浓度之间呈明显的量效关系。结论HBsAg和rhIL-12联合刺激乙型肝炎患者PBMC,通过产生高水平IFN-γ激活乙型肝炎患者特异性细胞免疫。

Animal experiment and clinical study of effect of gamma-interferon on hepatic fibrosis

AIM: To evaluate the antifibrotic effect of different doses of recombinant human Gamma-Interferon (IFN-gamma) in two rat models of hepatic fibrosis, and to observe its effect on moderate chronic hepatitis B virus fibrosis. METHODS: Hepatic fibrosis was successfully induced in 150 and 196 rats by subcutaneous injection of carbon tetrachloride (CCl4) and intraperitoneal injection of dimethylnitrosamine (DMN), respectively. Each of the two model groups was divided into: (1) fibrotic model group; (2) colchicine treatment group (0.1 mg/kg/day, gastrogavage for 8 weeks); (3) high-dose IFN-gamma group (15 MU/kg per day, i.m. for 8 weeks); (4) medium-dose IFN-gamma group (5 MU/kg daily, i.m. for 8 weeks); and (5) Y low-dose IFN-gamma group (1.67 MU/kg daily, i.m. for 8 weeks). Another group of 10 rats without any treatment was used as normal controls. At the end of the experiment, semi-quantitative histopathological scores of inflammation and fibrosis, liver alpha smooth muscle actin (alpha-SMA) expression level, liver hydroxyl proline content and serum hyaluronic acid levels were compared. And 47 medium chronic hepatitis B viral fibrosis patients were studied. They were given IFN-gamma treatment, 100 MU/day i.m. for the first three months and 100 MU qod i.m. for the next six months. Semi-quantitative pathological scores of inflammation and fibrosis and serum hepatic fibrosis indices were compared within the 9 months. RESULTS: In animal experiment, the pathological fibrosis scores and liver hydroxyl proline content were found to be significantly lower in rats treated with different doses of IFN-gamma as compared with rats in fibrotic model group induced by either CCl4 or DMN, in a dose-dependent manner. For CCl4-induced model, pathological fibrosis scores in high, medium and low doses IFN-gamma groups were 5.10 +/- 2.88, 7.70 +/- 3.53 and 8.00 +/- 3.30, respectively, but the score was 14.60 +/- 7.82 in fibrotic model group. Hydroxyl proline contents were 2.83 +/- 1.18, 3.59 +/- 1.22 and 4.80 +/- 1.62, in the three IFN-gamma groups, and 10.01 +/- 3.23 in fibrotic model group. The difference was statistically significant (P【0.01). Similar results were found in DMN-induced model. Pathological fibrosis scores were 6.30 +/- 0.48, 8.10 +/- 2.72 and 8.30 +/- 2.58, in high, medium and low doses IFN-gamma groups, and 12.60 +/- 3.57 in fibrotic model group. Hydroxyl proline contents were 2.72 +/- 0.58, 3.14 +/- 0.71 and 3.62 +/- 1.02, in the three IFN-gamma groups, and 12.79 +/- 1.54 in fibrotic model group. The difference was statistically significant (P【0.01).Serum hepatic fibrosis indices decreased significantly in the 47 patients after IFN-gamma treatment (HA: 433.38 +/- 373.00 vs 281.57 +/- 220.48; LN: 161.22 +/- 41.02 vs 146 +/- 35 +/- 44. 67; PC III: 192.59 +/- 89.95 vs 156.98 +/- 49.22; C-I: 156.30 +/- 44.01 vs 139.14 +/- 34.47) and the differences between the four indices were significant (P 【0.05). Thirty-three patients received two liver biopsies, one before and one after IFN-gamma treatment. In thirty of 33 patients IFN-gamma had better effects according to semi-quantitative pathological scores (8.40 +/- 5.83 vs 5.30 +/- 4.05, P【0.05). CONCLUSION: All the three doses of IFN-gamma are effective in treating rat liver fibrosis induced by either CCl4 or DMN, the higher the dose, the better the effect. And IFN-gamma is effective for patients with moderate chronic hepatitis B viral fibrosis.

Construction of Eukaryotic Expression Vector Containing B7-1/GFP Gene and Its Expression in Osteosarcoma Cell Line

Objective： To construct eukaryotic expression vector containing B7-1/GFP geneand study its expression in osteosarcoma cell line LM8. Methods： By using gene cloning technique, eukaxyotic expression vector pEGFP-C1 was used to construct the murine B7-1 recombinant plasmid （pEGFP-C1/B7）. Recombinant plasmid was transfected into LM8 cells with liposome and was confirmed by restriction endonuclease digestion and DNA sequencing. The expression of the fusion protein was detected using fluorescence microscope and Western blot analysis. Results： The recombinant eukaryotic expression plasmid pEGFP-C1/B7 was successfully constructed, which was confirmed by DNA sequencing, RT-PGR and restriction enzymes analysis. The green fluorescent protein could be detected in the transfected LM8 with fluorescence microscope. The expected B7-1 and green fluorescent protein （GFP） fusion protein was detected by RT-PCR and Western blot. Conclusion： The eukaryotic expression vector containing B7-1/GFP gene was constructed successfully, and it could be expressed in LM8 after transfection.

注射用重组人干扰素α-1b与恩替卡韦联用对乙型肝炎患者的疗效、安全性及肝功能的影响

目的:研究注射用重组人干扰素α-1b与恩替卡韦联用对乙型肝炎(简称乙肝)患者的疗效、安全性及肝功能影响。方法:选取84例从2018年1月~2019年8月接受治疗的乙肝患者作为研究对象。将其以随机抽签法等分成联合组及参照组。参照组予以恩替卡韦治疗,联合组则于恩替卡韦治疗的基础上增用注射用重组人干扰素α-1b治疗。对比两组疗效,不良反应,治疗前后肝功能以及免疫功能变化。结果:联合组总有效率高于参照组,差异有统计学意义(P<0.05)。联合组发热、白细胞/血小板下降、肌肉/关节酸痛发生率与参照组相比均不显著,差异无统计学意义(P>0.05)。治疗后联合组ALT、AST水平均低于参照组,差异有统计学意义(P<0.05)。治疗后联合组CD 4^(+)、CD 8^(+)、CD 4^(+)/CD 8^(+)水平均高于参照组,差异有统计学意义(P<0.05)。结论:注射用重组人干扰素α-1b与恩替卡韦联用可显著提高乙肝患者的临床疗效,且具有较好的安全性,有利于改善患者的肝功能以及免疫功能,值得临床推广应用。

重组人干扰素α-1b联合消旋卡多曲治疗婴幼儿病毒性腹泻疗效观察

目的:分析和探讨重组人干扰素α-1b联合消旋卡多曲治疗婴幼儿病毒性腹泻临床效果.方法:选取我院2013-01/2014-01收治的110例婴幼儿病毒性腹泻患者,通过随机数字表法分为对照组(n=55)和观察组(n=55),对照组患儿采用消旋卡多曲治疗,观察组患儿采用重组人干扰素α-1b联合消旋卡多曲治疗,对两组患儿临床治疗效果作比较分析.结果:观察组患儿临床治疗有效率显著高于对照组,住院时间较对照组患儿更低(P<0.05).结论:在婴幼儿病毒性腹泻治疗中,采用消旋卡多曲与重组人干扰素α-1b联合治疗,能明显改善临床症状,缩短住院时间,减轻患儿痛苦,疗效显著,值得临床推广应用.

Ang-(1-7)exerts anti-inflammatory and antioxidant activities on high glucose-induced injury by prohibiting NF-κB-IL-1βand activating HO-1 pathways in HUVECs

Previous reports have suggested that Ang-(1-7)may have a protective effect in endothelial cells against high glucose(HG)-induced cell injury thanks to a modulatory mechanism in the NF-κB signaling pathway.In this study,we have examined whether NF-κB-IL-1βand Heme oxygenase-1(HO-1)pathways contribute to the protection of Ang-(1-7)against hyperglycemia-induced inflammation and oxidative stress in human umbilical vein endothelial cells(HUVECs).Our results indicate that time-varying exposures of HUVECs,from 1 h to 24 h,to high glucose concentrations result in an increased expression of phosphorylated(p)-p65 and HO-1 in a time-dependent manner.As an inhibitor of NF-κB,pyrrolidinedithiocarbamic acid(PDTC)suppressed IL-1βproduction induced by HG.Of note,HUVECs previously treated with Ang-(1-7)(2μM)for 30 min before being exposed to HG concentrations significantly ameliorated the HG-increased in p-p65 and IL-1βexpression;whereas obviously up-regulated the level of HO-1,along with inhibition of oxidative stress,inflammation,and the HG-induced cytotoxicity.Importantly,when HUVECs were previously treated either with PDTC or IL-1Ra for 30 min before being exposed to HG,it significantly prevented damages caused by high glucose concentrations mentioned above,while the treatment of HO-1 inhibitor Sn-protoporphyrin(SnPP)before exposure to both HG and Ang-(1-7)significantly blocked the protective effect exerted by Ang-(1-7)on endothelial cells against injuries induced by HG mentioned above.To conclude,the data of this study showed that activation and inhibition of the NF-κB-IL-1βpathway and HO-1 pathway may constitute an important defense mechanism against endothelial cell damage caused by HG concentrations.We additionally gave new evidence showing that exogenous Ang-(1-7)exerts a protective effect on HUVECs against the HG-induced cell injury via the inhibition and the activation of the NF-κB-IL-1βpathway and the HO-1 pathway,respectively.

Effects of anti-HPV bioprotein dressing combined with interferon α-2b therapy on the malignant molecule expression in patients with CINⅢ complicated by high-risk HPV positive

Objective: To study the effects of anti-HPV bioprotein dressing combined with interferon α-2b therapy on the malignant molecule expression in patients with cervical intraepithelial neoplasia (CIN) Ⅲ complicated by high-risk HPV positive. Methods: Patients who were diagnosed with CINⅢ and high-risk HPV positive and underwent conization in the 3201 Hospital Affiliated to Xi'an Jiaotong University between June 2014 and February 2017 were selected and randomly divided into the observation group who received preoperative anti-HPV bioprotein dressing combined with interferon α-2b therapy and the control group who received no special treatment. CIN lesion was collected to determine the expression of pro-proliferation molecules, pro-apoptosis molecules and epithelial-mesenchymal transition molecules. Results: Rsf1, Piwil2, TOPK, p38MAPK, ERK, Snail, Twist, N-cadherin and Vimentin mRNA expression in cervical intraepithelial neoplasia lesions of observation group were greatly lower than those of control group whereas LRIG3, SARI, IEX-1, FHIT and E-cadherin mRNA expression were greatly higher than those of control group. Conclusion: Anti-HPV bioprotein dressing combined with interferon α-2b therapy can inhibit the proliferation and invasive growth of tumor cells in patients with CINⅢ complicated by high-risk HPV positive.

NLRP3、AIM2、IFI16炎症小体在慢性乙型病毒性肝炎患者PBMC中的活化水平和与HBV感染的相关性分析

目的:探讨乙肝病毒(HBV)是否激活了慢性乙型病毒性肝炎(CHB)患者外周血单个核细胞(PBMCs)内核苷酸结合寡聚化结构域样受体蛋白3(NLRP3)、黑色素瘤缺乏因子2(AIM2)和干扰素诱导蛋白16(IFI16)炎症小体,分析HBV影响炎症小体活化的可能机制.方法:收集感染内科临床确诊CHB患者35例.同时选取健康住院医师28例为对照.以常规淋巴细胞分层液密度梯度离心法分离健康对照组和CHB患者组静脉血得到PBMCs,采用逆转录、实时荧光定量PCR检测CHB患者组和健康对照组PBMCs NLRP3、AIM2、IFI16、凋亡相关的斑点样蛋白(ASC)、半胱天冬酶1(CASP1)、IL-1β、IL-18 mRNA表达水平,ELISA法检测两组血清中IL-1β蛋白分泌水平.结果:CHB患者组和健康对照组PBMCs ASC、NLRP3、AIM2、IL-1β、IL-18 mRNA表达水平及两组血清IL-1β蛋白分泌水平无显著性差异.CHB患者组PBMCs IFI16、CASP1 mRNA表达水平显著上调,且IFI16 mRNA表达水平与患者血清HBV DNA载量显著正相关(r=0.699 8,P<0.01).结论:慢性HBV感染未导致CHB患者PBMCs NLRP3、AIM2炎症小体的活化;尽管HBV DNA可能诱导了CHB患者IFI16炎症小体的高表达,但通过抑制pro-caspase-1的活化、IL-1β的表达,HBV阻断了IFI16炎症小体的活化效应.

基因工程人干扰素α-1滴眼剂治疗和预防急性出血性结膜炎——1988年北京流行期间的临床研究

用基因工程人干扰素α-1(rHuIFNα-1)和无环乌苷(ACV)滴眼剂随机双盲法治疗63例(126眼)AHC 患者。两组在治愈及好转时间方面无显著差异。对19例AHC 重症病例在用其它药物治疗无效后改用rHuIFNα-1治疗,治愈或明显缓解。另51例与患者密切接触的家属双盲法用rHuIFNα-1或ACV 预防用药后,rHuIFNα-1组发病率明显低于ACV 组,两组差异非常显著(P<0.01),认为rHuIFNα-1可在AHC流行期问用于预防和治疗重症病例。

地高辛标记探针检测重组人干扰素β_(1b)中DNA残留量

为检测注射用重组人干扰素β1b半成品中外源性DNA残留量,以重组人干扰素β1b工程菌基因组DNA为模板,用地高辛标记探针,并以此探针进行点杂交。结果证明,该方法检测灵敏度较好,特异性较强,操作较安全简便,可用于重组人干扰素β1b制备过程中的质量监控及半成品的检定。