Study on Polymorphisms in the Blood Protein of Tibetan Mastiff

[ Objective] The aim was to study the protein polymorphism in the blood of Tibetan Mastiff, and provide some theoretical basis for resource protection and reasonable development and utilization of Tibetan Mastiff varieties. [ Method] A total of 103 blood samples were taken from four populations of Hequ Tibetan Mastiff, Qinhai Tibetan Mastiff, Tibetan Spaniel and native dogs of Qinghai. Seven blood protein Iocus（Tf, Po, Sα2, Hb, AIb, Pr and Amy）were investigated by using vertical polyacrylamide gel electrophoresis with discontinuous buffer system. Then the genetic variation during different populations was analyzed. [ Result] Genetic variations were observed in Tf, Sα2 and Po in four populations, others were not polymorphic. There were three alleles at the locus of Tf and Po, two alleles at the loci of Sα2. Effective number of alleles and Nei＇s average expected heterozygosity were 1. 532 4 and 0.230 3 relatively, all higher in Tibetan Mastiff than other populations. [ Conclusion] Protein locus in blood of Tibetan Mastiff existed in genetic variation.

Long-term effects of early antibiotic intervention on blood parameters,apparent nutrient digestibility, and fecal microbial fermentation profile in pigs with different dietary protein levels

Backgroud： This study aimed to determine the effects of early antibiotic intervention（EAI） on subsequent blood parameters, apparent nutrient digestibility, and fecal fermentation profile in pigs with different dietary crude protein（CP） levels. Eighteen litters of piglets（total 212） were randomly allocated to 2 groups and were fed a creep feed diet with or without in-feed antibiotics（olaquindox, oxytetracycline calcium and kitasamycin） from postnatal d 7 to d 42. On d 42, the piglets within the control or antibiotic group were mixed, respectively, and then further randomly assigned to a normal-（20%, 18%, and 14% CP from d 42 to d 77, d 77 to d 120, and d 120 to d 185,respectively） or a low-CP diet（16%, 14%, and 10% CP from d 42 to d 77, d 77 to d 120, and d 120 to d 185,respectively）, generating 4 groups. On d 77（short-term） and d 185（long-term）, serum and fecal samples were obtained for blood parameters, microbial composition and microbial metabolism analysis.Results： EAI increased（P 〈 0.05） albumin and glucose concentrations in low-CP diet on d 77, and increased（P 〈 0.05） urea concentration in normal-CP diet. On d 185, EAI increased（P 〈 0.05） globulin concentration in normal-CP diets, but decreased glucose concentration. For nutrient digestibility, EAI increased（P 〈 0.05）digestibility of CP on d 77. For fecal microbiota, the EAI as well as low-CP diet decreased（P 〈 0.05） E. coli count on d 77. For fecal metabolites, on d 77, EAI decreased（P 〈 0.05） total amines concentration but increased skatole concentration in low-CP diet. On d 185, the EAI increased（P 〈 0.05） putrescine and total amines concentrations in low-CP diets but reduced（P 〈 0.05） in the normal-CP diets. The low-CP diet decreased the concentrations of these compounds.Conclusions： Collectively, these results indicate that EAI has short-term effects on the blood parameters and fecal microbial fermentation profile. The effects of EAI varied between CP levels, which was characterized by the significant alteration of glucose and putrescine concentration.

Productive performance and blood metabolites as affected by protected protein in sheep

This investigation included two experiments. Experiment 1 was executed to study the effect of feeding different rations of protected protein of canola meal on digestibility and nutritive values within sheep. Twenty male, healthy sheep were divided into five treatments according to the methods of protein protection (control, heat, sodium hydroxide, formaldehyde, and acetic acid treatments). Experiment 2 was carried out on developing lambs to investigate the effect of protected protein on growth performance and some blood metabolites. Animals in this ex-periment were also divided into the same treatments as Experiment 1. Animals in the first and second experiment were fed concentrate ration (80%) and wheat straw (20%) to cover the feed requirements. Nutritive values expressed as total digestible nutrients (TDN %) and digestible crude protein (DCP%) of the experimental rations was calculated. In the second experimental all animals were weighed biweekly and the amounts of rations were adjusted throughout the experimental period (120 days) according to their body weight change. Results indicated that in the first experimental protected protein by heat (HE) and sodium hydroxide (NH) had positive (P<0.05) effects on most of digestibility coefficients of different nutrients. Protein protection methods also improved (P<0.05) the nutritive values (TDN and DCP) in the HE treatment and NH treatment. In the second experiment body weight increased by 14% and 7% and also daily gain by 27% and14 % in HE and NH, respectively, while FM and AC decreased body weight by 8% and 4.4%. Higher values (P<0.01) in both thyroid hormones were observed in HE and NH than those other treatments. Also, higher values (P<0.01) of total protein, albumin, and glucose were observed in HE and NH than other treatments. The control (CTL) group recorded higher concentrations of urea-N and creatinine at different periods of the experiment in comparison with other treatments. Generally, from the present investigation it can be concluded that protected protein of canola meal by heat or sodium hydroxide treatments were more efficient for productive performance and some blood metabolites of sheep.

Correlation between intakes of carbohydrates,protein,and fat with random blood sugar levels in menopausal women

Objective: Carbohydrates, proteins, and fats are energy sources needed by the body for performing daily activities and generating primary energy substances. In women who have undergone menopause, the function of thyroid hormone in their body begins to decline and thus affects the ability of the body to produce energy. The purpose of this study was to determine the correlation between the intakes of carbohydrates, proteins, and fats and random blood sugar levels in menopausal women.Methods: This study was a correlational analytical research with a cross-sectional design, which was conducted in 72 menopausal women recruited by the purposive sampling technique. In this study, a 24-hour food recall form was used, and randomized blood sugar levels were measured using a glucometer. The analysis of the data was performed using a Pearson product moment and multiple linear regression.Results: Carbohydrates and fats together affected random blood sugar levels with an F-value of 25.810 and a p-value of 0.000.Meanwhile, adjusted R^2 showed the value of 0.411, indicating that the difference in the intake of carbohydrates and fats together affected random blood sugar levels by 41.1%.Conclusions: Intake of carbohydrates and fats affected random blood sugar levels, whereas the rest were influenced by other factors,and protein intake was unrelated to random blood sugar levels in menopausal women.

Comparison of the level of thrombus precursor protein in blood plasma between patients with acute cerebral infarction and healthy persons at different time

BACKGROUND： Thrombus precursor protein （TpP） is the index of thrombus activity level, and it is also early referencing index in detecting thrombus diseases. OBJECTIVE： To dynamically observe the changes of TpP level in blood plasma of patients with acute cerebral infarction at different time after onset, and to compare the differences of plasma TpP level between patients with acute cerebral infarction and healthy persons who received health examination. DESIGN： Controlled observation SETTING： Department of Neurology, Affiliated Hospital of Xuzhou Medical College PARTICIPANTS： Totally 58 patients with acute cerebral infarction who received the treatment in the Department of Neurology, Affiliated Hospital of Xuzhou Medical College between September 2004 and March 2005 were recruited in this study. They all met the diagnostic criteria revised by the 4^th National Conference of Cerebrovascular Disorders in 1995 and were diagnosed by clinical and skull CT and （or） MRI examinations. The patients included 33 male and 25 female aged from 36 to 87 years. Time to onset 〈 6 hours, 6 to 11 hours, 12 to 23 hours, 24 to 48 hours and 〉 48 hours were found in 10,11,14,10 and 13 patients respectively. Another 51 persons who homeochronously received the health body examination in our hospital were recruited, including 34 male and 17 female, aged 38 to 85 years, serving as control group. Patients with cardio-cerebrovascualr diseases or liver and kidney diseases were excluded. All the involved subjects were informed of the detected items. METHODS： About 4 mL venous blood was respectively taken from patients admitted to the hospital within 6 hours, 6 toll hours, 12 to 23 hours, 24 to 48 hours and more then 48 hours after onset, and healthy persons when receiving health examination. The level of TpP in blood plasma was measured with enzymelinked immunosorbent assay. MAIN OUTCOME MEASURES： ① Comparison of the level of plasma TpP between patients and controls;② Comparison of the level of plasma TpP of patients with acute cerebral infarction at different time after onset. RESULTS： Totally 58 patients with acute cerebral infarction and 51 persons who received health examination participated in the result analysis. ①Comparison of plasma TpP level between patients and controls： The plasma TpP level of patients with acute cerebral infarction was significantly higher than that of control group [（16.12±3.28）vs （5.38±1.36） mg/L, t= 20.993, P〈 0.01 ]. ② Comparison of plasma TpP level of patients with acute cerebral infarction at different time after onset： The level of plasma TpP was （12.06±3.06） mg/L within 6 hours, （15.11±3.42） mg/L at 6 to 11 hours, （20.63±4.05） mg/L at 12 to 23 hours, （16.15±3.50） mg/L at 24 to 48 hours and （11.88±3.11） mg/L at more than 48 hours after onset. It increased from the 6^th hour, reached the peak at the 12^th to 23^rd hours, maintained at very high level at the 48= hour and then gradually decreased and recovered to the level within 6 hours after onset. The level of plasma TpP of patients with acute cerebral infarction was signiticantly higher at the 12^th to 23^rd hours after onset and the 24^th to 48^th hours after onset than within 6 hours after onset （t = 13.385, P 〈 0.05）. CONCLUSION： ①The level of plasma TpP of patients with acute cerebral infarction is significantly higher than that of persons who received health examination.② Plasma TpP levels of patients with acute cerebral infarction change in wave manner at the different time after onset.

Protective role of buffalo pineal proteins on arsenic-induced oxidative stress in blood and kidney of rats

Objective: Exposure to various toxic metals has become an increasingly recognized source of ill- ness in human and animals, worldwide. Arsenic (As) and its compounds cause adverse health effects in animals and humans. Recently, it has been suggested that the pineal gland may also have antioxidants role due to secretary product other than melatonin. With keeping this view, pre-sent investigation tested effect of buffalo (Bubalus bubalis) pineal proteins (PP) on arsenic-induced oxidative stress in RBCs (Red blood cells) and kidney of rats. Methods: Eighteen adult female Wistar rats were grouped into group-I (Control), group-II (Arsenic control), and group-III (Arsenic + Pineal proteins). Experimental rats were given 100 ppm arsenic (p.o.) for 4 weeks alone or along with pineal proteins at a dose of 100 μg/kg body weight (i.p.). Results: Interestingly, arsenic ex-posure led to the stimulation of kidney catalase (CAT) activity, but inhibition of RBCs CAT activ-ity and significantly (P<0.05) increased the RBCs and kidney lipid peroxidation level (LPO). How-ever, arsenic treatment caused depletion of glu- tathione (GSH), superoxide dismutase (SOD), glutathione peroxidase (GPx), and glutathione reductase (GR) in kidney tissues. In RBCs, only GR and CAT activity were significantly (P<0.05) declined. These changes were significantly (P<0.05) reversed by PP treatment in arsenic exposed animals. Conclusion: Therefore, present study indicated the significant protecting effect of buf-falo (Bubalus bubalis) PP against arsenic in-duced-oxidative stress through antioxidant de-fense systems in rats.

Monitoring the changes in plasm C-reactive protein,fibrinogen and blood white cell in patients with primary hypertension combined with acute cerebral infarction

BACKGROUND： Inflammatory reaction and the increased level of its accompanying active protein play an important role in the occurrence and development of cerebral infarction. C-reactive protein, fibrinogen and white blood cell, as the monitoring index of inflammatory reaction, are very important in the occurrence and development of acute cerebral infarction. OBJECTIVE： To make a comparison between patients with primary hypertension accompanied with acute cerebral infarction and with simple primary hypertension by observing the changes in plasma C-reactive protein and fibrinogen levels as well as white blood cell and differential counts and analyzing their significances. DESIGN ： Controlled observation SETTING ： Ward Building for VIP, Shenzhen Hospital, Peking University. PARTICIPANTS： Totally 133 patients with primary hypertension were selected from Ward Building for VIP, Shenzhen Hospital, Peking University during September 2003 to September 2005, The diagnostic criteria were based on the hypertension diagnosis criteria formulated by the 7^th World Health Organization-International Society of Hypertension Guidelines （WHO-ISH） in 1998. The informed consents were obtained from all the participants. The involved patients were assigned into two groups： primary hypertension group, in which, there were 65 patients with primary hypertension （ degree 2）, including 42 males and 23 females, with mean age of （61 ±14）years and mean blood pressure of （162.7±6.8）/（94.2±8.4） mm Hg （1 mm Hg =0.133 kPa）, and primary hypertension combined with cerebral infarction group, in which, there were 68 patients with primary hypertension combined with cerebral infarction （ meeting the diagnostic criteria formulated in the 4^th National Cerebrovascular Diseases Meeting in 1995 and diagnosed by skull CT or MRI to exclude the patients with lacunar infarction）, including 42 males and 26 females, with mean age of （56±15） years and mean blood pressure of （176.4±9.2）/（96.3±9.7） mm Hg. METHODS： Plasm C-reactive protein and fibrinogen levels, and white blood cell and differential counts of patients in the two groups were examined 24 hours after stroke. The above indexes were re-examined in the primary hypertension combined with cerebral infarction group 72 hours after stroke. White blood cell and differential counts were performed with laser method （East Asia FE-95001 RAM-1, Japan）. The level of C-reactive protein was measured with turbidimetry （BNII Automatic Systems For Analysis, USA）. The level of fibrinogen was measured with algorithm method when prothrombin time was normal and with Clauss method when prothrombin time was abnormal （ACL Automatic Coagulation Analyzer, USA）. MAIN OUTCOME MEASURES： The plasm C-reactive protein and flbrinogen levels, and white blood cell and differential counts 24 hours after stroke in two groups and 72 hours after stroke in primary hypertension combined with cerebral infarction group. RESULTS： All the 133 involved patients participated in the result analysis. The plasm C-reactive protein and fibrinogen levels, and white blood cell and neutrophil counts in patients with primary hypertension were all within the normal range. The plasm C-reactive protein and fibrinogen levels, and white blood cell and neu- trophil counts in patients with primary hypertension combined with cerebral infarction were significantly higher than those in patients with primary hypertension 24 hours after stroke and 72 hours after stroke respectively[24 hours after stroke：（32.12±11.76） mg/L vs. （5.02±3.21 ） mg/L;（4.64±0.75） g/L vs. （3.12±0.49） g/L; （9.32±81）×10^9 L^- 1 vs. （5.78±1.32）×10^9L^- 1 （7.85±2.38）×10^9 L^- 1 vs.（3.49±1.28）×10^9 L^-1,t =7.094, 5.759,4.106,5.491, respectively,all P〈 0.01; 72 hours after stroke： （47.62±18.43） mg/L vs. （32.12±11.76） mg/L; （5.08±0.82） g/L vs. （4.64±0.75） g/L, t =2.864,2.220, respectively, both P 〈 0.05]. CONCLUSION： The increase in fibrinogen level and white blood cell count are the important index in monitoring primary hypertension combined with acute cerebral infarction. The increase in plasm C-reactive protein and fibrinogen levels 72 hours after stroke indicates that plasma C-reactive protein and fibrinogen are very important in the development of disease.

Transactivating-transduction protein-polyethylene glycol modified liposomes traverse the blood-spinal cord and blood-brain barriers

Naive liposomes can cross the blood-brain barrier and blood-spinal cord barrier in small amounts. Liposomes modified by a transactivating-transduction protein can deliver antibiotics for the treatment of acute bacterial infection-induced brain inflammation. Liposomes conjugated with polyethylene glycol have the capability of long-term circulation. In this study we prepared transactivating-transduction protein-polyethylene glycol-modified liposomes labeled with fiuorescein isothiocyanate. Thus, liposomes were characterized by transmembrane, long-term circulation and fluorescence tracing. Uptake, cytotoxicity, and the ability of traversing blood-spinal cord and blood-brain barriers were observed following coculture with human breast adenocarcinoma cells （MCF-7）. Results demonstrated that the liposomes had good biocompatibility, and low cytotoxicity when cocultured with human breast adenocarcinoma cells. Liposomes could traverse cell membranes and entered the central nervous system and neurocytes through the blood-spinal cord and blood-brain barriers of rats via the systemic circulation. These results verified that fluorescein isothiocyanate-modified transactivating-transduction protein-polyethylene glycol liposomes have the ability to traverse the blood-spinal cord and blood-brain barriers.

脓毒症患者白细胞计数、血清C反应蛋白、肝素结合蛋白、降钙素原表达及与病情进展及预后关系

目的探讨白细胞计数(WBC)、血清C反应蛋白(CRP)、肝素结合蛋白(HBP)和降钙素原在脓毒症患者病情进展和预后评估中的应用价值。方法将2018年4月至2023年3月内江市第一人民医院收治的205例脓毒症患者纳入本次回顾性研究,根据病情严重程度分为脓毒症组(n=129)和脓毒性休克组(n=76),并根据患者预后情况分成存活组(n=154)和死亡组(n=51)。检测脓毒症组与脓毒性休克组、存活组与死亡组患者的WBC、血清CRP、HBP、降钙素原水平,收集患者的急性生理与慢性健康状况评分系统Ⅱ(APACHEⅡ)评分和序贯器官衰竭评估(SOFA)评分,分析WBC、血清CRP、HBP、降钙素原与APACHEⅡ、SOFA评分的相关性;采用受试者工作特征(ROC)曲线分析上述4个指标单独及联合检测评估脓毒症患者预后。结果脓毒性休克组的WBC、血清CRP、HBP、降钙素原分别为(19.83±3.09)×10^(9)/L、(114.10±35.17)mg/L、(78.92±13.14)μg/L和(11.13±0.91)μg/L,均显著高于脓毒症组[(9.55±2.87)×10^(9)/L、(59.96±23.45)mg/L、(36.47±12.83)μg/L和(8.21±0.82)μg/L],差异均有统计学意义(P<0.05)。脓毒性休克组的APACHEⅡ评分、SOFA评分分别为(20.05±2.39)、(10.29±2.51)分,均显著高于脓毒症组[(16.21±2.30)、(7.90±2.17)分],差异均有统计学意义(P<0.05)。Pearson相关性分析显示,WBC、血清CRP、HBP、降钙素原与APACHEⅡ评分(r=0.554、0.593、0.713、0.651,P<0.05)、SOFA评分均呈显著正相关(r=0.540、0.571、0.687、0.609,P<0.05)。死亡组的WBC、血清CRP、HBP、降钙素原、APACHEⅡ评分、SOFA评分也均显著高于存活组,差异均有统计学意义(P<0.05)。ROC曲线分析显示,WBC、血清CRP、HBP、降钙素原及4个指标联合检测预测脓毒症患者不良预后的ROC曲线下面积分别为0.835、0.803、0.881、0.817和0.939。结论脓毒性休克患者的WBC、血清CRP、HBP、降钙素原显著高于脓毒症患者,可反映脓毒症患者的病情严重程度,4个指标联合检测对脓毒症患者的预后有较好的预测价值。

基于倾向性评分匹配探讨妊娠早期空腹血清ANGPTL-2及ANGPTL-8水平预测妊娠期糖尿病的价值

目的:探讨孕妇妊娠早期血清血管生成素样蛋白2(angiopoietin-like protein-2,ANGPTL-2)及ANGPTL-8水平预测妊娠期糖尿病(gestational diabetes mellitus,GDM)的价值。方法:前瞻性收集2023年7—12月在临海市妇幼保健院产检的妊娠早期(10~13周)孕妇共135例,并采集静脉血,根据纳入排除标准最终纳入114例孕妇。根据妊娠24~28周口服葡萄糖耐量试验(oral glucose tolerance test,OGTT)结果,分为GDM组(15例)和对照组(99例)。按照孕妇年龄和产次,采用倾向性评分匹配(1∶1),共配对成功14对(即GDM组14例,对照组14例)。比较2组孕妇血清ANGPTL-2及ANGPTL-8蛋白水平,Pearson相关分析这2种蛋白水平与孕妇临床指标的相关性,受试者工作特征(receiver operating characteristic,ROC)曲线分析2种蛋白对GDM的预测价值。结果:GDM组孕妇血清ANGPTL-2及ANGPTL-8水平均高于对照组(均P<0.05)。Pearson相关分析表明,ANGPTL-2及ANGPTL-8与OGTT时空腹血糖水平呈正相关(r=0.537,P=0.003;r=0.394,P=0.038)。ROC曲线分析显示,ANGPTL-2和ANGPTL-8预测GDM发生的曲线下面积(area under the curve,AUC)分别为0.75(95%CI:0.57~0.93)、0.79(95%CI:0.61~0.97),二者联合预测的AUC为0.81(95%CI:0.65~0.97)。结论:妊娠早期血清ANGPTL-2和ANGPTL-8水平可作为GDM的早期预测指标,有助于促进GDM的早期识别和干预管理。

脂必泰联合阿托伐他汀钙对脑梗死患者颈动脉粥样硬化斑块临床研究

目的 探讨脂必泰胶囊对脑梗死急性期患者颈动脉粥样硬化斑块的影响。方法 选取90例脑梗死急性期患者,采用随机数字表法将患者分为治疗组和对照组各45例。对照组给予西医常规治疗(阿托伐他汀钙片),治疗组联合脂必泰胶囊强化降脂治疗,疗程3个月。比较两组患者治疗前后血清超敏C反应蛋白(hypersensitive C-reactive protein, hs-CRP)、血脂水平、颈动脉斑块积分、斑块面积及中医证候评分。结果 治疗后,两组患者血清hs-CRP、总胆固醇(total cholesterol, TC)、甘油三酯(triglyceride, TG)、低密度脂蛋白水平(low densith lipoprotein, LDL-C)、颈动脉硬化斑块积分、斑块面积、中医证候评分均明显低于治疗前(P<0.05);且治疗组明显低于对照组,差异有统计学意义(P<0.05)。结论 脂必泰胶囊联合阿托伐他汀钙能够明显降低脑梗死急性期患者血脂和hs-CRP水平,减轻颈动脉粥样斑块,改善中医临床证候。

低蛋白质氨基酸平衡饲粮添加谷氨酸对断奶仔猪生长性能、血液抗氧化和免疫指标的影响

试验旨在研究较大幅度降低饲粮粗蛋白质(CP)水平,平衡必需氨基酸并添加谷氨酸对断奶仔猪生长性能、血液抗氧化和免疫指标的影响。试验选用144头杜长大杂交仔猪,随机分成3组,每组6个重复,每个重复8头猪,试验期16 d。Ⅰ组(对照组)饲粮CP水平为21.16%,Ⅱ组饲粮CP水平为15.97%,补充必需氨基酸(EAA)赖氨酸(Lys)、蛋氨酸(Met)、苏氨酸(Thr)、色氨酸(Trp)、缬氨酸(Val)和异亮氨酸(Ile),Ⅲ组为Ⅱ组+谷氨酸(Glu)。结果表明,仔猪平均日增重(ADG)Ⅱ组显著低于Ⅰ组和Ⅲ组(P<0.05)。Ⅱ组仔猪腹泻率显著低于Ⅰ组(P<0.05),Ⅲ组显著低于Ⅱ组(P<0.05),Ⅲ组极显著低于Ⅰ组(P<0.01)。Ⅲ组血浆总抗氧化能力(T-AOC)显著高于Ⅰ组和Ⅱ组(P<0.05)。血浆免疫球蛋白G(IgG)、免疫球蛋白A(IgA)、免疫球蛋白M(IgM)和白细胞介素-10(IL-10)含量Ⅲ组显著高于Ⅰ组和Ⅱ组(P<0.05),Ⅱ组血浆IL-10含量显著低于Ⅰ组(P<0.05)。综上,断奶后饲喂低蛋白质氨基酸平衡并添加谷氨酸的饲粮能够提高断奶仔猪生长性能、减少腹泻、增强机体抗氧化和免疫功能。

肝癌患者外周血中抑制树突状细胞分化的蛋白成分筛选及鉴定

目的肝癌患者外周血中靶向抑制树突状细胞分化成熟的蛋白成分筛选及鉴定。方法利用免疫磁珠分选健康人外周血CD14^(+)单核细胞,诱导分化为未成熟的树突状细胞(iDCs),进一步诱导分化为成熟的树突状细胞(mDCs),鉴定iDCs纯度。酶切健康人和肝癌患者血清孵育的iDCs的结合蛋白,回收酶切后的多肽,筛选对iDCs分化成熟有潜在调控作用的互作候选蛋白。靶向鉴定差异候选蛋白。构建过表达蛋白质粒,转染至正常肝细胞(HL7702),将细胞培养上清液与iDCs共同培养,诱导iDCs成熟,对特异性抑制iDCs成熟的肝癌源性血清蛋白进行特异性筛选和鉴定。结果TNF-α诱导前抗原标志物阳性细胞表达CD86^(+)比例为79.2%、黏附分子CD40^(+)比例为83.3%、MHC-Ⅱ抗原分子HLA-DR^(+)比例为67.6%、CD83^(+)比例为5.5%以及CD1a^(+)比例为13.7%,符合iDCs的抗原表型特征;TNF-α诱导后抗原标志物阳性细胞表达CD86^(+)比例为92.0%、CD40^(+)比例为89.0%、HLA-DR^(+)比例为68.3%、CD83^(+)比例为37%、CD1a^(+)比例为48.3%,提示iDCs已迅速分化成熟为mDCs,符合mDCs的抗原表型特征。初步确认40多种对iDCs分化成熟有潜在调控作用的互作候选蛋白。选择10种差异候选蛋白,对其过表达进行验证,显示AFP蛋白、AGXT蛋白、ATP1A1蛋白过表达能够明显抑制iDCs分化成熟为mDCs。结论共筛选出10种靶向抑制树突状细胞分化的肝癌外周血清蛋白,其中AFP蛋白、AGXT蛋白、ATP1A1蛋白能够显著抑制树突状细胞分化成熟。

非酒精性脂肪性肝炎患者血清Nrf2、AOPP水平与血脂、肝纤维化的关系

目的探讨非酒精性脂肪性肝炎(NASH)患者血清核因子E2相关因子2(Nrf2)、晚期氧化蛋白产物(AOPP)水平与血脂、肝纤维化的关系。方法选择重庆医科大学附属璧山医院收治的104例NASH患者作为研究组,另选90例体检健康者作为对照组。检测并比较各组血清Nrf2、AOPP水平,采用Pearson或Spearman相关分析NASH患者血清Nrf2、AOPP水平与血脂、肝纤维化的关系,采用受试者工作特征(ROC)曲线评估血清Nrf2、AOPP水平对NASH的诊断价值。结果研究组甘油三酯(TG)、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)、Nrf2、AOPP水平均高于对照组(P<0.05),高密度脂蛋白胆固醇(HDL-C)水平明显低于对照组(P<0.05)。重度组血清Nrf2、AOPP水平高于中度组、轻度组(P<0.05),中度组血清Nrf2、AOPP水平高于轻度组(P<0.05)。相关分析结果显示,NASH患者血清Nrf2、AOPP水平与TG、TC、LDL-C、肝纤维化程度均呈正相关(P<0.05),与HDL-C呈负相关(P<0.05)。血清Nrf2诊断NASH的曲线下面积(AUC)为0.830(95%CI 0.780~0.880),血清AOPP诊断NASH的AUC为0.866(95%CI 0.816~0.916),二者联合诊断NASH的AUC为0.925(95%CI 0.875~0.975)。结论NASH患者血清Nrf2、AOPP水平均升高,且二者水平与血脂、肝纤维化程度均存在密切关系,有望作为诊断NASH发生的有效指标。

血培养阳性报警时间联合PCT、CRP在细菌性血流感染中的诊断价值研究

目的研究血培养阳性报警时间(TTP)联合降钙素原(PCT)、C反应蛋白(CRP)在细菌性血流感染(BSI)中的诊断价值。方法选取该院从2022年1月至2023年6月收治的700例细菌性BSI患者开展试验,作为感染组;另选取同期判定为血培养污染患者100例作为对照组。检测并对比分析2组患者TTP与PCT、CRP水平。对比不同检测方式诊断细菌性BSI的效能。此外,对比不同种类病原菌感染及不同感染程度患者TTP与PCT、CRP水平。结果感染组患者TTP为(12.66±3.43)h,短于对照组的(20.11±5.19)h,而血清PCT、CRP水平分别为(1.79±0.42)ng/mL、(41.73±7.55)mg/L,均高于对照组[(0.03±0.01)ng/mL、(3.55±1.01)mg/L],差异均有统计学意义(P<0.05)。将血培养结果作为“金标准”,TTP与PCT、CRP联合检测诊断细菌性BSI的灵敏度、特异度、准确度分别为91.00%、97.00%、91.75%,均高于上述三项指标单独诊断,差异均有统计学意义(P<0.05)。革兰阳性菌感染患者PCT水平低于革兰阴性菌感染患者,差异有统计学意义(P<0.05);不同种类病原菌感染患者TTP与CRP水平比较,差异均无统计学意义(P>0.05)。重度感染患者PCT、CRP水平均高于轻中度感染患者,差异均有统计学意义(P<0.05)。结论TTP联合PCT、CRP诊断细菌性BSI的效能较佳,且能有效鉴别病原菌类型,为患者感染严重程度的评估提供可靠依据。

结直肠癌患者术前外周血淋巴细胞/C反应蛋白比值的临床意义研究

研究淋巴细胞计数/C-反应蛋白比值[Lymphocyte(/μL)/C-reactive protein(mg/dL)ratio,LCR]对结直肠癌(col-orectal cancer,CRC)根治术患者的临床意义。以2015年1月—2016年6月寿光市人民医院收治的CRC根治术患者为对象行回顾性研究,比较炎症标志物对CRC术后并发症和患者生存期的预测价值。研究结果显示,淋巴细胞计数/CRP比率(lymphocyte count/CRP ratio,LCR)预测术后并发症的曲线下面积为0.769。LCR≤12450是术后并发症的独立危险因素;年龄>65岁、LCR≤12450、CRP/白蛋白比率(CRP/albumin ratio,CAR)>0.27是总生存期(overall survival,OS)和无复发生存期(recurrence-free survival,RFS)较差的独立风险因素;N分期阳性是RFS较差的独立风险因素。研究发现,术前外周血LCR是预测CRC根治术后并发症、OS和RFS的良好指标。

慢性乙型肝炎者外周血SAA/CRP、NLR水平与HBV-DNA载量、病情程度的相关性分析

目的探究慢性乙型肝炎(chronic hepatitis B,CHB)患者外周血淀粉样蛋白A(serum amyloid A,SAA)与C反应蛋白(C-reactive protein,CRP)比值(SAA/CRP)、中性粒细胞与淋巴细胞比值(neutrophils lymphocytes ratio,NLR)水平与乙型肝炎病毒-脱氧核糖核酸(HBV-DNA)载量及病情程度的相关性。方法选取2020年6月至2022年6月达州市中西医结合医院100例CHB患者作为研究组,根据病情程度分为轻度(单纯CHB,n=36)、中度(乙肝代偿期肝硬化,n=33)和重度(乙肝失代偿期肝硬化,n=31)。另选同期、同年龄段50例健康志愿者作为对照组,比较研究组不同病情程度、对照组一般资料、血清SAA/CRP、NLR水平,并比较研究组不同HBV-DNA载量患者血清SAA/CRP、NLR水平,分析CHB患者血清SAA/CRP、NLR水平与HBV-DNA载量、病情程度的相关性;所有患者均行抗病毒治疗,治疗24周,比较不同抗病毒疗效患者治疗前、治疗后12周、24周血清SAA/CRP、NLR水平及变化值,分析治疗前后血清SAA/CRP、NLR水平变化值预测疗效的价值。结果重度CHB患者血清SAA/CRP、NLR水平>中度CHB患者>轻度CHB患者>健康人群(P<0.05);高载量患者血清SAA/CRP、NLR水平>中载量患者>轻载量患者(P<0.05);CHB患者血清SAA/CRP、NLR水平与HBV-DNA载量(r=0.756、0.709)、病情程度(r=0.776、0.745)呈正相关(P<0.05);无应答患者治疗后12周、24周外周血SAA/CRP、NLR水平均高于应答患者,变化值均低于应答患者(P<0.05);SAA/CRP△1、NLR△1单独预测的AUC分别为0.752、0.773,联合预测△1的AUC为0.861;SAA/CRP△2、NLR△2单独预测的AUC分别为0.796、0.819,联合预测△2的AUC为0.967,大于联合预测△1的AUC(P<0.05)。结论CHB患者的SAA/CRP、NLR与CHB HBV-DNA载量及病情程度具有相关性,临床可通过其水平变化评估病情及预测预后。

急性脑梗死患者外周血hs-CRP、WBC、NEU、HCY表达及其临床意义

目的 探究急性脑梗死(ACI)患者外周血超敏C反应蛋白(hs-CRP)、白细胞计数(WBC)、中性粒细胞(NEU)、同型半胱氨酸(HCY)表达及其临床意义。方法 选取2021年8月—2023年1月本院收治的120例ACI患者作为研究对象(ACI组),根据美国国立卫生研究院卒中量表(NIHSS)将ACI患者分为轻度组48例、中度组45例、重度组27例,根据患者6个月预后情况,分为预后良好组71例与预后不良组49例。同时选取同时期来我院体检的健康人员116例作为对照组,分别检测外周血hs-CRP、WBC、NEU、HCY水平,采用Spearman法分析ACI患者外周血hs-CRP、WBC、NEU、HCY水平与NIHSS评分的相关性;采用受试者工作特征(ROC)曲线分析外周血hs-CRP、WBC、NEU、HCY水平对ACI患者预后不良的预测价值。结果 与对照组比较,ACI组外周血hs-CRP、WBC、NEU、HCY水平显著升高(P<0.05)。轻度组、中度组、重度组外周血hs-CRP、WBC、NEU、HCY水平比较差异有统计学意义(P<0.05);且两两比较,差异均有统计学意义(P<0.05)ACI患者外周血hs-CRP、WBC、NEU、HCY水平与NIHSS评分呈正相关(r=0.583、0.600、0.457、0.585,P<0.05)。ACI预后不良组患者外周血hs-CRP、WBC、NEU、HCY水平显著高于预后良好组(P<0.05)。hs-CRP、WBC、NEU、HCY水平单独与联合预测ACI患者预后不良的曲线下面积(AUC)分别为0.770、0.811、0.851、0.633、0.934,联合预测价值高于单独预测(P<0.05)。结论 hs-CRP、WBC、NEU、HCY在ACI患者外周血水平升高,与患者病情发生发展、预后评估有关,可以作为ACI病情诊断、治疗及预后评估的标志物。

免疫固定电泳及血清蛋白电泳检测相关的临床资料分析

目的对2022~2023年8721例免疫固定电泳(IFE)检测的相关临床资料进行分析,为多种疾病的诊断提供参考依据。方法通过Sebia Hydrasys2电泳仪检测我院2022年1月至2023年7月就诊的8721例患者的免疫固定电泳,并对其相关临床资料进行统计分析。结果8721例免疫固定电泳结果中,阳性例数为2135(24.48%),阴性例数为6586(75.52%),阳性结果中以IgG-κ型占比最高(30.07%)。送检阳性率最高的前5位科室IFE主要型别存在差异,不同疾病类型IFE主要型别也存在差异。951例IFE阳性患者检测了血清蛋白电泳(SPEP),M蛋白在不同区带IFE主要类型有区别。SPEPγ区带M蛋白不同类型与TP含量相关。尿轻链κ的含量与不同疾病IFE结果无明显相关性,尿轻链λ含量与MM及肾功能不全患者IFE结果有关,而与其他疾病无关。血轻链κ及λ在IFE阳性患者中的表达量均显著高于阴性患者。结论不同科室、不同疾病IFE主要型别存在差异,SPEPγ区带M蛋白类型与TP含量有关,且尿轻链及血轻链与IFE结果相关。这些统计结果可为临床上相关疾病的诊断提供参考依据。

超敏C-反应蛋白、血清降钙素原及白细胞计数在新生儿感染性疾病中的早期诊断价值

目的研究超敏C-反应蛋白(hs-CRP)、血清降钙素原(PCT)及白细胞(WBC)计数在新生儿感染性疾病的早期诊断价值,为降低临床抗生素使用率及新生儿病死率等提供科学依据。方法将2021年1月—2021年12月本院收治的62例患有感染性疾病的新生儿为病例组,同期同科室收住的50例患新生儿非感染性疾病的病例为对照组,在入院第1天和第7天分别采静脉血对比两组患儿hs-CRP、PCT和WBC的差异,计算hs-CRP、PCT和WBC灵敏度、特异度并绘制ROC曲线。结果入院时病例组hs-CRP、PCT和WBC计数均高于对照组,差异具有统计学意义(P<0.001);入院7天时,病例组hs-CRP、PCT均明显下降,与对照组差异无统计学意义(P>0.05),WBC计数虽较入院时明显下降,但仍较对照组高,差异具有统计学意义(P<0.05);hs-CRP、PCT、WBC计数和hs-CRP+PCT在诊断新生儿感染性疾病的ROC曲线下面积分别是0.954、0.962、0.732和0.985。Hs-CRP+PCT的约登指数最高,曲线下面积最大,其次是PCT、hs-CRP、WBC,差异均具有统计学意义(P<0.05)。结论hs-CRP、PCT和WBC计数在新生儿患有感染性疾病的早期均具有一定的诊断价值,hs-CRP联合PCT有助于早期判断是否使用抗生素。