Changes of serum p53 antibodies and clinical signifi cance of radiotherapy for esophageal squamous cell carcinoma

AIM： To explore the relationship between serum p53 antibodies （p53-Abs） and clinicopathological characteristics and therapeutic effect in patients with esophageal carcinoma （EC）, and to investigate sequential changing regularity of serum pS3-Abs after radiotherapy. METHODS： The serum pS3-Ab levels were detected in 46 EC patients and 30 healthy adults by enzyme linked immunosorbent assay （ELISA）. The blood samples were collected on the day before radiotherapy and on the administration of an irradiation dose of 20 Gy/10 f/12 d, 40 Gy/20 f/24 d and 60 Gy/30 f/36 d after radiotherapy. RESULTS： The level and positive rate of serum pS3-Abs in EC patients were significantly higher than those in normal individuals （P 〈 0.05）. Serum anti-p53 antibodies were positive in 18 of 46 EC patients （39.1%）. The positive rate of pS3-Abs in EC was related to histological grade, disease stage and lymph node metastasis （P 〈 0.05）, but it was not significantly related to sex, age and to the size and site of tumor. The level and positive rate of p53-Abs had significant differences between before radiotherapy and after administration of an irradiation dose of 40 Gy/20 f/24 d and 60 Gy/30 f/36 d （P 〈 0.05 orP 〈 0.01）. The positive rate of p53-Abs in EC patients with effect was significantly lower than that in those without effect after radiotherapy （P 〈 0.0001）.CONCLUSION： Detection of serum p53-Abs is helpful to the diagnosis of esophageal carcinoma. Monitoring for sequential change of serum p53-Abs before and after radiotherapy in patients with esophageal carcinoma is also useful to evaluate the response to the treatment and prognosis of the patients.

Serum Helicobacter pylori Kat A and Ahp C antibodies as novel biomarkers for gastric cancer

AIM: To investigate catalase (KatA) and alkyl hydroperoxide reductase (AhpC) antibodies of Helicobacter pylori as biomarkers for gastric cancer (GC). METHODS: This study included 232 cases and 264 controls. Recombinant KatA and AhpC proteins were constructed and the levels of antibodies were tested by indirect enzyme-linked immunosorbent assay (ELISA). Logistic regression was applied to analyze the relationships between KatA, AhpC and GC. The chi(2) trend test was used to evaluate the dose-response relationships between serum KatA and AhpC antibody levels and GC. Receiver operating characteristic (ROC) curve was used to evaluate the screening accuracy of KatA and AhpC as biomarkers. Combined analysis was used to observe screening accuracy of predictors for GC. RESULTS: In all subjects, the association between KatA and AhpC and GC risk was significant (P < 0.001) with odds ratio (OR) = 12.84 (95%CI: 7.79-21.15) and OR = 2.4 (95%CI: 1.55-3.73), respectively. KatA and AhpC antibody levels were strongly related to GC risk with a dose-dependent effect (P for trend < 0.001). The area under the ROC (AUC) for KatA was 0.806, providing a sensitivity of 66.81% and specificity of 86.36%; and the AUC for AhpC was 0.615, with a sensitivity of 75.65% and specificity of 45.49%. The AUC was 0.906 for KatA and flagella protein A (FlaA) combined analysis. CONCLUSION: Serum KatA and AhpC antibodies are associated with GC risk and KatA may serve as a biomarker for GC. KatA/FlaA combined analysis improved screening accuracy.

<i>Blastomyces dermatitidis</i>Antibody Responses in Serial Serum Specimens from Dogs with Blastomycosis: Comparison of Different Yeast Lysate Antigens

The systemic fungal organism, Blastomyces dermatitidis causes blastomycosis in animals and hu-mans. This study was designed to evaluate antibody detection in 55 serial serum specimens from 9 dogs with blastomycosis using B. dermatitidis yeast lysate antigens produced from two human isolates (B5896;B5931) and two dog isolates (ERC-2;T-58) with the indirect enzyme linked im-munosorbent assay (ELISA;peroxidase system) to determine an optimal lysate antigen(s) for use in the ELISA to detect antibody in the dog serum specimens. The mean absorbance values when the lysate antigens were compared with respect to their ability to detect antibody in the day 0 sera from the 9 dogs were 1.024 (ERC-2), 1.351 (B5896), 1.700 (B5931) and 2.084 (T-58) respectively. All of the reagents exhibited a high level of sensitivity and in all instances the amount of antibody declined as the time interval post-treatment increased, but the T-58 lysate prepared from the dog isolate from Tennessee was the optimal reagent. We continue to evaluate antigens for B. derma-titidis antibody detection in different immunodiagnostic assays.

Screening of Serum Dilution and Determination of Normal Range of Antibodies against Rabies Viruses in Dog Sera

[ Objective] To screen a suitable serum dilution and determine the normal range of antibodies against rabies viruses （RV） in dog serum. [Method]A sensitive, specific and suitable serum dilution was screened. A total of 812 dog serum samples were collected from Changchun, Nanning and Uuzhou regions, and then they were diluted with above screened serum dilution and evaluated by indirect enzyme-linked immunosorbont assay （ELISA）. The positive and negative standard dog sara from the World Organization for Animal Health （OIE） were used as controls. The serum samples with different A450 were randomly selected and the anti-RV serum titers were detected by rapid fluorescent focus inhibition test （RFFIT）. According to the A450 of dog sera, the normal A450 range of negative serum and 95% confidence intervals were calculated with SPSS 10.0 software, and the regression equation of OIE standards was established. [ Result] The screened serum dilution was sensitive and specific; at least 756 negative serum samples were obtained; the normal range and 95% confidence interval of negative serum were 0.127 3 ± 0.059 8 and 0.078 1 -0.172 3, respectively; and the regression equation was A450 = 1.139 serum titer （IU） ±0.470. [ Conclusion] These results lay a foundation for thecontrolling of dog rabies endemic and the development of ELISA kits of dog antibodies against RV.

Detection of Serum Antibodies of Porcine Pseudorabies Virus(PRV)in Binzhou City in 2014

To understand immunization effect of pseudorabies vaccine and infection status of porcine pseudorabies （PR） in pig farms and guide prevention and control against PR, 453 copies of blood samples collected from 43 different scale pig farms in four counties （districts） of Binzhou City were detected with ELISA to investigate PRV gB antibody and gE antibody. Detection results showed that the gB antibody positive rate of sows was 75.58%, and that of fattening pigs was 68.67% ; the pig farms with positive rate higher than 70% accounted for 74.42% of total survey pig farms. The PRV gE antibody positive rates of sows and fatte- ning pigs were 25.41% and 26.67%, and the positive rates of pig farms were 46.51% and 44.33%, respectively. There were regional differences among counties （districts）.

Role of GM3 ganglioside in the pathology of some progressive human diseases and prognostic importance of serum anti-GM3 antibodies

Glycosphingolipids(gangliosides)have been characterized as important biological molecules with a key role as regulators in many physiological processes on cellular,tissue,organ,and organism levels.The deviations in their normal amounts,production,and metabolism are very often related to the development of many multi-factor socially important diseases.GM3 ganglioside,as a small molecule,plays important roles in the cascade regulatory pathways in the pathology of many disorders like neurodegenerative diseases,autoimmune diseases,inflammation,diabetes,malignant transformation,and others.Ganglioside GM3 and its derivatives are membrane-bound glycosphingolipids composed of an oligosaccharide head structure containing one sialic acid residue.These molecules transduce signals involved in cell surface events,including the phosphorylation of transmembrane receptors.This ganglioside is the most widely distributed among tissues,and it serves as a precursor for most of the more complex ganglioside species.GM3 inhibits the function of fibroblast growth factor receptor,and cell growth is regulated by GM3-enriched microdomain.GM3 is thought to inhibit immunologic functions,such as the proliferation and production of cytokines by T cells.On the other hand,the anti-ganglioside antibodies(AGAs)are important in many acquired demyelinating immunemediated neuropathies,like Multiple sclerosis(MS),Guillain–Barrésyndrome(GBS)and its variation,Miller–Fisher syndrome(MFS)and could be suggested as important diagnostic and prognostic markers about the describe diseases and their etiology.We show that the complexes of anti-ganglioside antibodies to GM3(detected by ELISA)may be useful diagnostic and prognostic tool markers for autoimmune diseases,neurodegenerative disorders,malignancy,diabetes,and inflammation.Our pilot studies suggest increased serum IgG anti-GM3 antibodies titers in patients with secondary progressive MS(SPMS),throat cancer,elder people with diabetes(89–96 years),old Lewis rats(30–33 months),and in the serum of subjected on lead intoxication BALB/c mice treated by salinomycin.We observed no changes in the titers in healthy elder people(89–96 years),in 70-year-old woman on dialysis,in relapsing-remitting MS(RRMS)patients on long-term treatment with Glatiramer acetate,Laquinimod,and Interferons,as well as in 18–22 months old Wistar rats and subjected on lead intoxication BALB/c mice treated by monensin and dimercaptosuccinic acid(DMSA).Considerable decrease of serum GM3 in early MS correlate with early damage and severe destruction of the blood–brain barrier,which provides impetus to initiate early therapy.

Development of a Multi-Plex Electrochemiluminescent Assay for the Detection of Serum Antibody Responses to Meningococcal Conjugate Vaccines

Neisseria meningitidis is a gram negative diplococcal bacterium. Worldwide, N. meningitidis is the leading cause of bacterial meningitis and sepsis, with five serogroups (A, B, C, Y, and W-135) responsible for the majority of the disease. Multivalent (A, C, Y, and W-135) polysaccharide and conjugate vaccines have been licensed in the United States and elsewhere and are widely available. We have developed a multi-plexed electrochemiluminescent assay to quantitate serum antibody responses to meningococcal polysaccharides A, C, Y, and W-135 to allow for rapid evaluation of li- censed and investigational vaccines. A 96-well plate containing a carbon electrode arrayed with polysaccharides A, C, Y, and W-135 on separate spots within each well has been developed for simultaneous detection of polysaccharidespecific antibodies in serum samples from vaccinated individuals. The assay conditions were optimized using the anti-meningococcal serogroup A/C reference serum pool, CDC 1992 (NIBSC 99/706), through evaluation of plate types, coating polysaccharide concentrations, and blocking and serum diluent buffers. Comparison of single and multiplex assays demonstrated the sensitivity, specificity, and speed of the multi-plex format for the quantification of serum antibody responses to N. meningitidis polysaccharides A, C, Y and W-135.

Emergent Serum Therapy and Antibody Medicine to Counteract Sudden Attacks of COVID-19 and Other Pathogenic Epidemics

The science behind two life-saving protocols to combat COVID-19 and future pathogenic epidemics is presented for immediate implementation.

Analysis of Detecting HIV-1 Antibody in Paired Urine and Serum Specimens from Drug Users by ELISA

Objective- To compare the consistency of the results from detecting HIV-1 antibody in the paired urine and serum specimens from drug users by ELISA. Methods: The paired urine and serum specimens from 273 drug users detained at a detoxification unit were collected, and the HIV-1 antibodies in the specimens of them were screened by urine and serum ELISA kits, respectively. Results: Of 273 serum specimens, 94 ones showed positive reaction and among 94 counterpart urine specimens, 93 ones also appeared positive reaction. Taking the results together,the consistent rate of HIV-1 antibody screened by urine and serum ELISA kits was 99.6%. Conclusion: The urine ELISA kit, which screened HIV-1 antibody of urine showing almost the same results tested by serum ELISA kit, is reliable. It is proposed that urine ELISA be introduced in many fields.

2017—2021年云南省猪瘟病原学和血清学监测情况分析

为全面了解2017—2021年云南省猪瘟(CSF)流行及免疫状况,预估疫病流行和发生风险,采集病原学样品63 224份、血清学样品146 547份,进行CSF病原和血清抗体监测。结果显示:2017—2021年云南省CSF免疫抗体合格率分别为82.94%、81.47%、80.79%、80.24%、82.53%,规模场合格率略高于散养户,但差异不显著(P>0.05);CSF病原核酸阳性率分别为0.52%、0.74%、1.10%、1.02%、2.42%,散养户、屠宰场阳性率高于规模场。结果表明:自2017年CSF退出强制免疫后,云南省CSF免疫抗体合格率均达到国家标准,但病原阳性率整体呈上升趋势,且分布范围广,免疫密度低和抗体合格率低的散养户发生CSF的风险较高,提示应对其加强监测和免疫。

H5N1亚型禽流感病毒神经氨酸酶蛋白在昆虫细胞中的表达与鉴定

研究旨在利用昆虫细胞-杆状病毒表达系统制备H5N1亚型禽流感病毒(AIV)的神经氨酸酶(NA)蛋白。试验为获得具有良好反应原性的NA蛋白,将H5N1亚型AIV(DK/YN/S4469/2022)密码子优化后的N1基因插入载体pFastBac1,构建的重组转移载体pFastBac1-N1转化至DH10Bac感受态细胞,经过蓝白斑筛选获得阳性重组杆粒rBacmid-N1,然后将重组杆粒转染至sf9昆虫细胞,获得N1亚型重组杆状病毒。结果显示:N1重组蛋白在sf9昆虫细胞中正确表达,并且该重组蛋白具有良好的反应原性,能够与N1蛋白单克隆抗体3F3发生特异性反应,其仅能识别N1亚型鸡血清,特异性较好。研究成功制备了N1重组蛋白,为NA蛋白表达方法提供参考并为临床血清样品的N1抗体检测方法的建立奠定基础。

新疆某规模化猪场3种病毒病抗体监测分析与免疫程序优化

该试验旨在了解当前新疆巴州某规模化猪场猪瘟(CSF)、猪蓝耳病(PRRS)和伪狂犬(PR)疫苗的免疫水平,收集当地某规模化生猪养殖场的467个血清样品,采用ELISA抗体检测试剂盒检测血清中猪瘟、猪蓝耳病和猪伪狂犬病毒的抗体水平。结果显示,该地区的猪瘟、猪蓝耳病和猪伪狂犬病毒平均血清抗体阳性率分别为93.68%、77.22%和92.65%,均超过我国强制性疫苗免疫抗体阳性率标准70%。该地区猪群免疫手段还有很大的进步空间,本研究结合该地区实际情况对免疫程序进行了相应的调整优化。

NT与血清β-hCG、PAPP-A、ADAM12单独及联合检测对孕早期DS的诊断价值

目的:探讨颈部透明层厚度(NT)与血清人绒毛膜促性腺激素(β-hCG)、妊娠相关蛋白A(PAPP-A)及解整合素金属蛋白酶12(ADAM12)单独及联合检测对孕早期唐氏综合征(DS)的诊断价值。方法:选取2019年1月—2023年1月在厦门大学附属第一医院杏林分院经羊膜穿刺确诊的47例DS孕妇作为DS组,另选取同期49例产前检查正常的孕产妇作为对照组,检测并比较两组NT及血清β-hCG、PAPP-A、ADAM12水平,并采用受试者工作特征(ROC)曲线分析NT与血清β-hCG、PAPP-A、ADAM12单独及联合检测对DS的诊断价值。结果:DS组NT及血清β-hCG水平高于对照组,PAPP-A、ADAM12水平均低于对照组,差异有统计学意义(P<0.05)。ROC曲线分析显示,NT与血清β-hCG、PAPP-A、ADAM12联合检测诊断DS的曲线下面积为0.993,预测敏感度、特异度分别为95.7%、98.0%,均高于上述指标单独检测。结论:NT与血清β-hCG、PAPP-A、ADAM12检测对孕早期DS均具有一定的诊断价值,且联合应用诊断效果更高,可作为孕早期DS筛查的有效指标。

白喉毒素突变体CRM197在大肠杆菌中优化表达及人群血清抗体水平分析

目的 构建白喉毒素突变体CRM197的原核表达载体,在大肠杆菌中表达CRM197蛋白。分析健康人群血清中的CRM197抗体水平。方法 对CRM197基因进行大肠杆菌密码子优化并克隆至pET28a(+)中,经表达条件优化后采用镍柱亲和层析和离子交换层析对重组蛋白CRM197进行纯化,对纯化的CRM197进行Western blot鉴定。最后,经纯化后的CRM197蛋白与健康人群血清进行反应,检测人群血清中针对该蛋白的抗体水平。结果 CRM197蛋白进行了密码子及表达条件优化后,获得了可溶性表达蛋白。经镍柱亲和层析和离子交换层析后其纯度可达95%以上,Western Blot鉴定后能得到单一的特异性条带。经纯化的CRM197蛋白与不同年龄阶段健康人群血清均发生不同程度的抗原抗体反应。结论 利用本研究的策略,CRM197得到高效的可溶性表达,但人群血清中含有高水平的CRM197抗体,这些抗体的存在可能会影响到应用CRM197结合多糖作为抗原进行特异免疫效果的评价以及作为诊断抗原的应用。

肝纤维化患者血清核心岩藻糖基化低分子量激肽原和α-半乳糖基化抗体的表达及预测价值

目的:肝纤维化是许多慢性肝脏疾病的共同病理基础,可进展至肝硬化,是肝脏疾病的主要致死因素,而早期识别并逆转肝纤维化进程是慢性肝病治疗的关键,本研究旨在比较血清核心岩藻糖标志物低分子量激肽原(core fucosylated low molecular weight kininogen,LMWK-Fc)和α-半乳糖基化(alpha-galactosidase,α-Gal)抗体在不同阶段肝纤维化患者体内的表达情况,评估其诊断肝纤维化的效能。方法:回顾性纳入2022年6月至2023年3月在中南大学湘雅二医院感染科就诊的275例慢性肝病患者,其中115例患者接受了肝活检。根据病理结果显示的肝组织内胶原沉积对肝结构破坏范围、程度和肝微循环影响的大小将115例完善肝活检的患者分为0~4期:S0,肝组织内无明显胶原沉积,肝结构和肝微循环正常;S1,肝组织内有轻度胶原沉积,部分破坏肝小叶结构,但肝微循环基本正常;S2,肝组织内中度胶原沉积,部分破坏肝小叶结构和肝微循环;S3,肝组织内广泛胶原沉积,大量破坏肝小叶结构和肝微循环;S4,发展为肝硬化,肝组织内高度胶原沉积,肝小叶结构完全破坏,肝微循环严重受损。并根据分期标准分为无肝纤维化组(S0)、肝纤维化组(S1~S2)、显著纤维化组(S3~S4)。160例未完善肝活检的患者则按照肝硬度值(liverstiffness measurement,LSM)分为无肝纤维化组(F0:LSM<7.3k Pa)、肝纤维化组(F1~F2:LSM为7.3~12.4 kPa)、明显肝纤维化组(F3~F4:LSM>12.4 kPa)。采集患者的年龄、性别等基本人口学资料以及丙氨酸转氨酶、天冬氨酸转氨酶、γ-谷氨酰转肽酶、碱性磷酸酶、甲胎蛋白、血小板计数等实验室指标,计算肝纤维化-4指数(fibrosis-4 index,FIB-4)、天冬氨酸转氨酶/血小板比值指数(aspartate aminotransferase-to-platelet ratio index,APRI),并对各项指标进行差异性分析;对入组的患者分别行血清LMWK-Fc和α-Gal抗体检测,比较各组间LMWK-Fc、α-Gal抗体及其他肝纤维化指标的表达情况;分析LMWK-Fc、α-Gal抗体表达水平与肝纤维化程度的相关性;采用受试者操作特征(receiver operating characteristic,ROC)曲线分析血清LMWK-Fc、α-Gal抗体水平预测肝纤维化的价值。结果:在未完善肝活检的160例患者中,血清α-Gal抗体及LMWK-Fc的表达水平在无肝纤维化组、肝纤维化组、明显肝纤维化组依次递增,差异有统计学意义(P<0.05)。在完善肝活检的115例患者中,血清LMWK-Fc水平在无纤维化组、肝纤维化组、显著肝纤维化组间依次增高,血清α-Gal抗体表达水平在显著肝纤维化组中高于无纤维化组、肝纤维化组,差异有统计学意义(P<0.001,P=0.032)。单变量和多元线性回归分析结果显示肝纤维化与性别、LMWKFc水平均有相关性(均P<0.05),与年龄、α-Gal抗体水平、FIB-4和APRI均无相关性(均P>0.05)。结论:血清LMWK-Fc和α-Gal抗体在不同分级肝纤维化患者血清中的表达水平存在差异,可能与肝纤维化进展有一定的相关性,LMWK-Fc水平对肝纤维化诊断具有一定的预测价值。

先兆流产患者保胎结局影响因素及与血清sHLA-G、ACA水平关系

目的:探索先兆流产患者保胎结局的影响因素,并分析其与血清可溶性人白细胞抗原-G(sHLA-G)、抗心磷脂抗体(ACA)的关系。方法:回顾性收集2021年6月-2023年6月本院收治的80例先兆流产患者临床资料,根据保胎结局分为保胎失败组与保胎成功组,对比两组一般资料,酶联免疫吸附法检测两组sHLA-G、ACA水平,经单因素及Pearson相关性分析法探讨先兆流产保胎结局的影响因素及与血清sHLA-G、ACA水平关系。结果:两组年龄、既往流产史、合并阴道炎、生殖道感染、妊娠期糖尿病、接触有毒化学物质等方面有差异;保胎失败组sHLA-G(7.43±1.20 U/ml)水平低于保胎成功组(50.14±4.56 U/ml),ACA阳性率(74.1%)高于保胎成功组(20.8%)(均P<0.05)。logistic回归分析,高龄、既往流产史、合并阴道炎、生殖道感染、妊娠期糖尿病、接触有毒化学物质、sHLA-G水平低、ACA阳性率高均是影响先兆流产患者保胎结局的重要因素;Pearson相关性分析,年龄、既往流产史、合并阴道炎、生殖道感染、妊娠期糖尿病、接触有毒化学物质与血清sHLA-G水平呈负相关,与ACA阳性率呈正相关(均P<0.05)。结论:先兆流产患者保胎结局可能与高龄、既往流产史、合并阴道炎、生殖道感染、妊娠期糖尿病、接触有毒化学物质、sHLA-G水平及ACA阳性率有关,临床可针对上述因素给予密切关注,并通过监测sHLA-G水平及ACA阳性率的变化来指导临床早期干预,以确保母婴安全。

两种梅毒抗体检测方法在梅毒早期诊断中的应用

目的分析梅毒早期诊断中两种梅毒抗体检测方法的应用效果。方法从梅毒螺旋体明胶颗粒凝集试验为阳性患者中选择117例,另选择健康体检者113例,所有研究对象均接受梅毒螺旋体明胶颗粒凝集试验和甲苯胺红不加热血清试验进行检验,以梅毒螺旋体明胶颗粒凝集试验结果为金标准,分析甲苯胺红不加热血清试验的检查结果及诊断敏感性和特异性。结果梅毒螺旋体明胶颗粒凝集试验检出阳性117例,阴性113例。以梅毒螺旋体明胶颗粒凝集试验结果为金标准,甲苯胺红不加热血清试验检出阳性患者99例、占比43.04%,阴性患者131例、占比56.96%,诊断敏感性、特异性分别为84.62%(99/117)和100.00%(113/113)。结论梅毒传染性较强,对身体危害大,因此需尽早筛查尽早治疗,避免延误治疗时机。梅毒螺旋体明胶颗粒凝集试验灵敏性较高,可以提升诊断质量,减少误诊,但该检测方式费用更高,操作较为复杂,因此在实际检测过程中可以使用甲苯胺红不加热血清试验进行筛查,联合两种检测方式效果更优。

类风湿性关节炎患者血清抗环瓜氨酸肽抗体检测方法的对比分析

目的分析研究类风湿性关节炎患者血清抗环瓜氨酸肽抗体检测方法的对比。方法选取2022年5月至2023年11月新乡市中心医院类风湿关节炎的90例患者为研究对象,所有人均行血清抗环瓜氨酸肽抗体检测,依次采用酶联免疫法、免疫胶体金法、免疫透射比浊法和化学发光法检测,比较各种检测方式与酶联免疫法检测结果的符合率。评价符合率较高的检测方法的精准性。结果免疫胶体金法、免疫透射比浊法、化学发光法与酶联免疫法的阳性符合率分别为:94.44%、88.89%、100%;总体符合率分别为:86.67%、83.33%、97.78%;Kappa值分别为:0.39、0.61、0.86。化学发光法仪器温度波动不超过1℃,发光重复率不超过5%,发光稳定性变化不超过±5%,精密度变化不超过8%,化学发光法检测诊断有较高的精准度。结论化学发光法与酶联免疫法有良好的结果一致性,化学发光法的精密度较高符合临床诊断要求,值得作为初筛血清抗环瓜氨酸肽抗体的首选方式,可以提高诊断准确率。

TPO-Ab、FT3/FT4比值、TBiL水平与急性缺血性脑卒中患者短期预后的关系研究

目的 探究甲状腺过氧化物酶抗体(thyroid peroxidase antibodies, TPO-Ab)、游离三碘甲状腺原氨酸(free triiodothyronine, FT3)和游离甲状腺素(free thyroxine, FT4)的比值(FT3/FT4)、血清总胆红素(total bilirubin, TBiL)水平与急性缺血性脑卒中(acute ischemic stroke, AIS)患者短期预后的关系。方法 回顾性选取2021年3月~2023年5月在蒙城县第一人民医院接受治疗的124例急性缺血性脑卒中患者,治疗3个月后根据改良Rankin量表(modified rankin scale, mRS)评分分为良好预后组(82例)和预后不良组(42例)。使用单因素及多因素logistic回归分析TPO-Ab、FT3/FT4比值、TBiL水平及其他相关因素对急性缺血性脑卒中患者短期预后的影响,并且构建患者不良预后预测模型,模型准确度以ROC曲线判断。结果 多因素分析结果显示,两组患者年龄(OR=2.045,95%CI=1.159~3.608,P=0.014)、美国卫生研究院卒中量表(NIHSS)(OR=1.805,95%CI=1.058~3.079,P=0.030)、TBiL(OR=0.620,95%CI=0.418~0.922,P=0.018)、FT3/FT4(OR=0.244,95%CI=0.088~0.679,P=0.007)、TPO-Ab(OR=3.242,95%CI=1.312~8.009,P=0.011)均为患者预后不良的独立影响因素(P<0.05)。在此基础上建立风险预测模型,模型公式:Logit(P)=-42.915+0.715×年龄+0.591×NIHSS-0.477×TBiL-1.409×FT3/FT4+1.176×TPO-Ab。其ROC曲线下面积为0.996,95%CI=0.991~1.000-,敏感度为1.000,特异度为0.963,Youden指数为0.963。结论 TPO-Ab、FT3/FT4比值、TBiL水平均为急性缺血性脑卒中患者短期预后不良的独立影响因素,在此基础上建立的联合预测模型预测效能良好。