肾组织石蜡切片Ⅳ型胶原α链免疫组织化学染色在诊断Alport综合征中的应用

目的对Alport综合征(AS)患者肾脏穿刺组织进行石蜡切片Ⅳ型胶原α链免疫组织化学检测,探讨其临床应用价值。方法选取2018年11月至2022年7月浙江大学医学院附属第一医院肾脏病中心确诊的10例AS患者(AS病例组)、10例心脏死亡器官捐献者(DCD)供肾及10例确诊为免疫球蛋白A肾病患者(对照组)的肾组织进行石蜡切片Ⅳ型胶原α1、α3、α5链全自动免疫组织化学染色,将其与冰冻切片免疫荧光染色结果进行比较。将对照组肾组织石蜡切片分别采用多种方法进行抗原修复,比较修复效果。结果对照组肾组织2种染色方法Ⅳ型胶原α1、α3、α5链染色在肾小球基底膜(GBM)中均为连续线状阳性表达。AS病例组肾组织2种染色方法Ⅳ型胶原α1链染色在GBM均呈连续线状阳性表达,α3、α5链染色在GBM为阴性或节段弱阳性表达。2种染色方法染色结果具有较高的一致性(Kappa=0.615,P=0.035)。结论石蜡切片全自动免疫组织化学检测Ⅳ型胶原α1、α3和α5能较好地用于AS的诊断,为AS的诊断和研究提供了一种可靠的技术手段。

基于上皮细胞-间充质细胞转分化(EMT)理论的艾灸配合化纤Ⅳ号方对实验大鼠Collagen Type Ⅲ和PDGF干预作用实验研究

目的:基于上皮细胞-间充质细胞转分化(EMT)学说观察化纤Ⅳ号方、艾灸以及二者相配合治疗肺纤维化大鼠Collagen TypeⅢ(Ⅲ-C)和PDGF的变化,探讨其治疗效应及生物学机制。方法:将鼠龄约为6周的SD大鼠随机分为空白组、模型组、化纤Ⅳ号方组、艾灸组、化纤Ⅳ号方与艾灸配合治疗组(简称为"灸药组"),治疗30 d后处死观察其肺组织病理改变,并检测其Collagen TypeⅢ、PDGF的基因和蛋白表达情况。结果:实时荧光定量结果显示:与空白组相比,各组Ⅲ-C和PDGF m RNA表达增高(P<0.05)。与模型组相比,各组的Ⅲ-C和PDGF m RNA表达有明显降低(P<0.01)。而各组中,灸药组疗效最明显,Ⅲ-C和PDGF的表达最低。蛋白免疫印迹法检测结果显示:与模型组相比各组的Ⅲ-C蛋白表达有差异。结论:1艾灸、化纤Ⅳ号方均可减轻博莱霉素诱导肺纤维化大鼠的肺纤维化程度。2艾灸配合化纤Ⅳ号方可减轻博莱霉素诱导肺纤维化大鼠的肺纤维化程度,且其效果优于单用艾灸或单用化纤Ⅳ号方。3艾灸、化纤Ⅳ号方及其二者配合使用不同程度阻抑博莱霉素诱导肺纤维化大鼠肺纤维化进程的效应机制,可能与通过调控其EMT过程中的Ⅲ-C和PDGF表达环节紧密相关。

Collagen type Ⅳ对周围神经中再生轴突及非神经元细胞的作用和影响

本文用抗ｃｏｌｌａｇｅｎｔｙｐｅⅣ对抗体阻断ｃｏｌｌａｇｅｎｔｙｎｅⅣ的方法，研究了ｃｏｌｌａｇｅｎｔｙｐｅⅣ失活的移植神经段（长１０ｍｍ）植入大鼠坐骨神经后对再生轴突和非神经元细胞的作用和影响．实验结果显示：在移植神经段近端距近侧吻合口１ｍｍ处，术后１０ｄ抗ｃｏｌｌａｇｅｎｔｙｐｅⅣ组再生轴突数为对照组的５４％，术后１５ｄ增加到６６％，术后３０ｄ高达９４％．在移植神经段远侧距近侧吻合口９ｍｍ处，术后３０ｄ抗ｃｏｌｌａｇｅｎｔｙｐｅⅣ组再生轴突数为对照组的５８％。表明抗ｃｏｌｌａｇｅｎｔｙｐｅⅣ组再生轴突的生长启动和生长速度明显慢于对照组．巨噬细胞在移植神经段内的滞留数量抗ｃｏｌｌａｇｅｎｔｙｐｅⅣ组明显多于对照组．这些结果揭示ｃｏｌｌａｇｅｎｔｙｐｅⅣ在神经损伤和再生中对促进轴突的生长和维持神经微环境的平衡起着积极的作用．本文对ｃｏｌｌａｇｅｎｔｙｐｅⅣ在神经再生中的作用机制作了初步的分析和探讨。

Serum hyaluronic acid, procollagen type Ⅲ and Ⅳ in histological diagnosis of liver fibrosis

OBJECTIVE: To assess the significance of serum hyaluronic acid (HA), proeollagen type Ⅲ (PCⅢ), collagen type Ⅳ (CⅣ) in the histological diagnosis of liver fibrosis. METHODS: The concentrations of serum HA, PCⅢ, CⅣ in 253 patients with chronic liver diseases were measured by radioimmunoassay. Liver biopsies were performed in all patients at the same time. The liver was pathologically evaluated by a pathologist according to a scoring system. Combined with the results of liver pathological diagnosis, the accuracy of serum HA, PCⅢ, CⅣ in diagnosing patients with hepatic fibrosis (staging≥S_2) or cirrhosis (S_4) was assessed using the receiver operating curve (ROC). RESULTS: The cutoff values of serum HA, PCⅢ and CⅣ for identifying patients with hepatic fibrosis (≥S_2) or cirrhosis (S_4) were determined. The cutoff values of serum HA, PCⅢ and CⅣ for detecting patients with fibrosis (stage≥S_2) were 90μg/L, 90μg/L, 75μg/L, respectively; their sensitivity (Se) was 80.4%, 82%, 63.1%; their specificity (Spe) was 70.2%, 60.8%, 83.8%; their positive predictive values (PPV) were 86.7%, 83.5%, 90.4%; their negative predictive values (NPV) were 59.8%, 58.4%, 48.4%, respectively. The cutoff values for detecting patients with liver cirrhosis were 210μg/L for HA, 96.2% for Se, 85.3% for Spe, 65.4% for PPV, 98.8% for NPV; 150μg/L for PCⅢ, 76.4% for Se, 68.7% for Spe, 40.4% for PPV, 91.3% for NPV; 90μg/L for CⅣ, 80% for Se, 75.8% for Spe, 47.8% for PPV, 93.2% for NPV, respectively. CONCLUSIONS: Serum HA, PCⅢ and CⅣ can be determined for an accurate diagnosis of hepatic fibrosis in various stages. HA is the best for screening liver cirrhosis.

Macroscopic appearance of TypeⅣand giant Type Ⅲ is a high risk for a poor prognosis in pathological stage Ⅱ/Ⅲ advanced gastric cancer with postoperative adjuvant chemotherapy

AIM To evaluate whether a high risk macroscopic appearance(Type Ⅳ and giant Type Ⅲ) is associated with a dismal prognosis after curative surgery, because its prognostic relevance remains elusive in pathological stage Ⅱ/Ⅲ(p Stage Ⅱ/Ⅲ) gastric cancer.METHODS One hundred and seventy-two advanced gastric cancer(defined as pT2 or beyond) patients with p Stage Ⅱ/Ⅲ who underwent curative surgery plus adjuvant S1 chemotherapy were evaluated, and the prognostic relevance of a high-risk macroscopic appearance was examined. RESULTS Advanced gastric cancers with a high-risk macroscopic appearance were retrospectively identified by preoperative recorded images. A high-risk macroscopic appearance showed a significantly worse relapse free survival(RFS)(35.7%) and overall survival(OS)(34%) than an average risk appearance(P = 0.0003 and P < 0.0001, respectively). A high-risk macroscopic appearance was significantly associated with the 13^(th) Japanese Gastric Cancer Association(JGCA) pT(P = 0.01), but not with the 13^(th) JGCA pN. On univariate analysis for RFS and OS, prognostic factors included 13^(th) JGCA p Stage(P < 0.0001)and other clinicopathological factors including macroscopic appearance. A multivariate Cox proportional hazards model for univariate prognostic factors identified highrisk macroscopic appearance(P = 0.036, HR = 2.29 for RFS and P = 0.021, HR = 2.74 for OS) as an independent prognostic indicator. CONCLUSION A high-risk macroscopic appearance was associated with a poor prognosis, and it could be a prognostic factor independent of 13^(th) JGCA stage in p Stage Ⅱ/Ⅲ advanced gastric cancer.

Genomic characteristics of Dickeya fangzhongdai isolates from pear and the function of type Ⅳ pili in the chromosome

Dickeya fangzhongdai, the causal agent of bleeding canker of pear, is a new member of the Dickeya genus and the only one that infects woody plants. Recent studies have reclassified several Dickeya isolates as D. fangzhongdai, which were isolated from various environments, including water, Phalaenopsis sp. and Aglaonema sp. To provide genomic characterization of D. fangzhongdai isolates from pear, the genomes of D. fangzhongdai strain JS5(=China General Microbiological Culture Collection Center, CGMCC 1.15464 ~T=DSM 101947 ~T), along with two other isolates, LN1 and QZH3, were sequenced and compared to those of other Dickeya spp. Homology greater than 99% was observed among three D. fangzhongdai strains. Plasmid, type IV secretion system(T4 SS) and type IV pili(TFPs) were found in genomes of D. fangzhongdai isolates. Comparative analysis of the type Ⅲ secretion systems(T3 SS), type Ⅲ secretion effectors(T3 SE), plant cell wall degradation enzymes(PCWDE) and membrane transport proteins of Dickeya spp. showed some differences which might reflect the variations of virulence, phylogenetic and phenotypic characteristics of Dickeya spp. In addition, deletion mutant of TFP in D. fangzhongdai JS5 showed no twitching motility and reduced virulence and biofilm formation. The fingdings of the distinctive plasmid, T4 SS and TFPs, as well as the differences of T3 SE, PCWDE and membrane transport proteins make D. fangzhongdai isolates unique. These results also suggested that acquisition of virulence genes by horizontal gene transfer might play some role in the genetic variation of D. fangzhongdai.

Subtotal gastrectomy combined with chemotherapy: An effective therapy for patients with circumscribed Borrmann type Ⅳ gastric cancer

BACKGROUND Although Borrmann type Ⅳ(B-4) gastric cancer has a higher mortality rate and presents distant metastasis easily, especially peritoneal metastasis, when diagnosed, some B-4 patients were found to have no distant metastasis by preoperative detection and underwent curative surgery, which was defined as circumscribed B-4 in our study. In this study, we focused on the circumscribed B-4 patients without distant metastasis during surgery to identify factors related to prognosis and postoperative peritoneal cavity metastasis(PPCM), which is important for selecting an appropriate therapeutic strategy.AIM To identify factors related to the prognosis and PPCM of B-4 patients.METHODS A total of 117 B-4 patients who underwent gastrectomy between January 2005 and December 2012 were included in this study. Survival analysis was performed using Kaplan–Meier analysis and Cox multivariate models. Pearson correlation analyses were performed to identify the factors related to PPCM. All statistical analyses were performed using SPSS 20.0.RESULTS Lymph node status, gastrectomy type, and postoperative chemotherapy were independent prognostic factors in 117 circumscribed B-4 patients. Subtotal gastrectomy combined with chemotherapy could significantly improve the longterm survival time. Six patients who were diagnosed with pN0 and received the combination therapy had a 3-year survival rate of 100% and a median survival of 77.7 mo. Even for patients with metastatic lymph nodes(n = 13), the combination therapy also increased the 3-year overall survival rate to 57.1%. In addition, positive lymph node status was the only factor(P = 0.005) correlated with PPCM in certain B-4 patients, and chemotherapy was useful for suppressing PPCM in patients with subtotal gastrectomy but not in those with total gastrectomy.CONCLUSION Lymph node status is an independent prognostic factor for circumscribed B-4 patients. In addition, subtotal gastrectomy and postoperative chemotherapy could effectively improve prognosis and even suppress PPCM.

Double filtration plasmapheresis for pregnancy with hyperlipidemia in glycogen storage disease type Ia:A case report

BACKGROUND Glycogen storage disease type Ia(GSDIa) is an autosomal recessive inborn error of carbohydrate metabolism that is caused by deficiency of the enzyme glucose-6-phosphatase(G6Pase),leading to disturbed glycogenolysis and gluconeogenesis.Patients with GSDIa show severe fasting hypoglycemia,hyperlipidemia,hyperlactacidemia,and hyperuricemia,which are associated with fatal outcomes in pregnant women and fetuses.CASE SUMMARY Herein,we report the case of a 24-year-old female who on her first visit to the hospital,presented with pregnancy combined with extremely high hyperlipidemia and hyperlactic acidosis with anemia,and frequent hypoglycemia occurred during the treatment.Genetic tests revealed a mutation in the G6Pase gene(G6PC) at 17q21,the patient was finally diagnosed with glycogen storage disease type Ia for the first time after 22 years of inaccurate treatment.She has been treated with a continuous double filtration plasmapheresis(DFPP) strategy to remove blood lipids,and a cornstarch diet therapy.The patient did not develop pancreatitis during the course of the disease and a healthy baby girl weighing 3 kg was delivered.CONCLUSION Patients with GSDIa may be misdiagnosed as epilepsy.DFPP can be used to control hyperlipidemia in GSDIa patients during pregnancy.

Serum type Ⅳ collagen level is predictive for esophageal varices in patients with severe alcoholic disease

AIM: To determine factors predictive for esophageal varices in severe alcoholic disease (SAD). METHODS: Abdominal ultrasonography (US) was performed on 444 patients suffering from alcoholism. Forty-four patients found to have splenomegaly and/ or withering of the right liver lobe were defined as those with SAD. SAD patients were examined by upper gastrointestinal (UGI) endoscopy for the presence of esophageal varices. The existence of esophageal varices was then related to clinical variables. RESULTS: Twenty-five patients (56.8%) had esophageal varices. A univariate analysis revealed a significant difference in age and type Ⅳ collagen levels between patients with and without esophageal varices. A logistic regression analysis identified type Ⅳ collagen as the only independent variable predictive for esophageal varices (P = 0.017). The area under the curve (AUC) for type Ⅳ collagen as determined by the receiver operating characteristic (ROC) for predicting esophageal varices was 0.78. CONCLUSION: This study suggests that the level of type Ⅳ collagen has a high diagnostic accuracy for the detection of esophageal varices in SAD.

Significance of regenerating islet-derived type Ⅳ gene expression in gastroenterological cancers

The regenerating islet-derived members (Reg ),a group of small secretory proteins,which are involved in cell proliferation or differentiation in digestive organs,are upregulated in several gastrointestinal cancers,functioning as trophic or antiapoptotic factors.Regenerating islet-derived type Ⅳ (RegⅣ ),a member of the Reg gene family,has been reported to be overexpressed in gastroenterological cancers.RegIV overexpression in tumor cells has been associated with carcinogenesis,cell growth,survival and resistance to apoptosis.Cancer tissue expressing RegⅣ is generally associated with more malignant characteristics than that without such expression,and RegⅣ is considered a novel prognostic factor as well as diagnostic marker in some gastroenterological cancers.We previously investigated the expression levels of RegⅣ mRNA of 202 surgical colorectal cancer specimens with quantitative real-time reverse-transcriptase polymerase chain reaction and reported that a higher level of RegⅣ gene expression was a significant independent predictor of colorectal cancer.The biologic functions of RegⅣ protein in cancer tissue,associated with carcinogenesis,antiapoptosis and invasiveness,are being elucidated by molecular investigations using transfection techniques or neutralizing antibodies of RegⅣ,and the feasibility of antibody therapy targeting RegⅣ is being assessed.These studies may lead to novel therapeutic strategies for gastroenterological cancers expressing RegⅣ .This review article summarizes the current information related to biological functions as well as clinical importance of RegⅣ gene to clarify the significance of RegⅣ expression in gastroenterological cancers.

Pre-hepatectomy type Ⅳ collagen 7S predicts post-hepatectomy liver failure and recovery

BACKGROUND Liver resection is an effective treatment for benign and malignant liver tumors.However,a method for preoperative evaluation of hepatic reserve has not yet been established.Previously reported assessments of preoperative hepatic reserve focused only on liver failure in the early postoperative period and did not consider the long-term recovery of hepatic reserve.When determining eligibility for hepatectomy,the underlying pathophysiology needs to be considered to determine if the functional hepatic reserve can withstand both surgery and any postoperative therapy.AIM To identify pre-hepatectomy factors associated with both early postoperative liver failure and long-term postoperative liver function recovery.METHODS This study was a retrospective cohort study.We retrospectively investigated 215 patients who underwent hepatectomy at our hospital between May 2013 and December 2016.Early post-hepatectomy liver failure(PHLF)was defined using the International Study Group of Liver Surgery’s definition of PHLF.Long-term postoperative recovery of liver function was defined as the time taken for serum total bilirubin and albumin levels to return to levels of<2 mg/dL and>2.8 g/dL,respectively,and the time taken for Child-Pugh score to return to Child-Pugh class A.RESULTS Preoperative type IV collagen 7S was identified as a significant independent factor associated with both PHLF and postoperative long-term recovery of liver function.Further analysis revealed that the time taken for the recovery of Child-Pugh scores and serum total bilirubin and albumin levels was significantly shorter in patients with type IV collagen 7S≤6 ng/mL than in those with type IV collagen 7S>6 ng/mL.In additional analyses,similar results were observed in patients without chronic viral hepatitis associated with fibrosis.CONCLUSION Preoperative type IV collagen 7S is a preoperative predictor of PHLF and longterm postoperative liver function recovery.It can also be used in patients without chronic hepatitis virus.

Hypertension, type Ⅳ cardiorenal syndrome and chronic kidney disease: Pathophysiological and therapeutical approach

Hypertension represent one of the most important comorbid factors in chronic kidney disease(CKD) patients and its prevalence increases from 65% to 95% according to glomerular filtration rate decline. CKD patients need to maintain their blood pressure levels into 130/80 mm Hg according to most recent guidelines. Despite of many therapeutic agents, achievement of ideal blood pressure levels remains so far from the ideal ones. Hypertensive disease represent most important risk factor to develop a type Ⅳ cardiorenal syndrome, while prevalence of end stage renal disease is still raising and it represents worldwide epidemiological challenge. Correct management of hypertensive disease can obtain better control on CKD progression.

Ⅳ类石英玻璃光学均匀性影响因素研究

Ⅳ类石英玻璃是一种重要的特种玻璃材料,在光学探测、惯性导航等领域内具有重要作用。光学均匀性是表征光学玻璃结构均匀性的一种重要方法,Ⅳ类石英玻璃的光学均匀性与硅氧网络结构分布一致性密切相关。本文通过四步法光学均匀性测试、紫外-可见-近红外光谱、红外反射光谱等方法,研究了羟基、金属杂质及氧缺陷的径向分布特点和硅氧键键角的径向变化,采用相关性分析研究了各影响因素对样品光学均匀性的影响。结果表明:表示玻璃光学均匀性的波前畸变t_(0)Δn沿玻璃半径先降低后升高;羟基的径向分布整体上与t_(0)Δn的径向变化相反,200 nm处透过率径向变化、硅氧键键角径向变化与t_(0)Δn的径向变化相近;羟基对Ⅳ类石英玻璃光学均匀性的影响较小,金属杂质、氧缺陷及硅氧键键角的径向变化是影响Ⅳ类石英玻璃光学均匀性的主要因素。

Biochanin-A attenuates high-fat diet and streptozotocin-induced hyperlipidemia and oxidative stress in rats by improving antioxidant status and lipid metabolic markers

Objective:To determine how biochanin-A(BCA)affects high-fat diet and streptozotocin-induced pathological changes in lipid metabolism and antioxidant status in diabetic rats.Methods:Diabetic rats were orally administered BCA(10 mg/kg body weight)for 30 days to investigate its effects on lipid profiles and oxidative stress markers in the liver and kidney.In addition,the mRNA expression of antioxidant and lipid metabolism enzymes in the liver was examined.Results:BCA attenuated hyperlipidemia by regulating mRNA expressions of HMG-CoA reductase,fatty acid synthase,carnitine palmitoyl transferase,and acetyl-CoA carboxylase.Additionally,BCA reduced high-fat diet and streptozotocin-induced oxidative stress by suppressing lipid peroxidation,improving superoxide dismutase,catalase,and glutathione peroxidase levels,and upregulating mRNA expressions of these enzymes.Conclusions:BCA may be a promising nutraceutical for the treatment of dyslipidemia and oxidative stress associated with diabetes.

Conservative management of small bowel perforation in Ehlers-Danlos syndrome type Ⅳ

Ehlers-Danlos syndrome (EDS) is a group of inherited connective tissue disorders caused by collagen synthesis defects. EDS type Ⅳ, or vascular EDS, is caused by loss-of-function mutations in the type Ⅲ pro-collagen gene (COL3A1 ). Common complications of EDS type IV include gastrointestinal bleeding and bowel perforations, posing diagnostic and therapeutic dilemmas for both surgeons and gastroenterologists. Here, we describe a complicated case of EDS type Ⅳ in a 35-year-old caucasian female who presented with overt gastro-intestinal bleeding. The patient had a prior history of spontaneous colonic perforation, and an uncomplicated upper endoscopy was performed. A careful ileoscopy was terminated early due to tachycardia and severe ab-dominal pain, and a subsequent computed tomography scan confirmed the diagnosis of ileal perforation. The patient was managed conservatively, and demonstrated daily improvement. At the time of hospital discharge, no further episodes of gastrointestinal blood loss had occurred. This case highlights the benefit of conservative management for EDS patients with gastrointestinal hemorrhage. It is recommended that surgical treatmentshould be reserved for patients who fail conservative treatment or in cases of hemodynamic instability. Finally, this case demonstrates the necessity for a higher threshold of operative or endoscopic interventions in EDS type Ⅳ patients.

Ⅳ型高脂血症患者血清高密度脂蛋白亚类组成及含量

目的探讨Ⅳ型高脂血症患者血清高密度脂蛋白亚类含量及分布特征。方法采用双向电泳—免疫印迹检测法分析132例Ⅳ型高脂血症患者和163例正常对照者血清高密度脂蛋白亚类的组成及含量。结果与血脂正常组比较,Ⅳ型高脂血症患者血清前β1-高密度脂蛋白、高密度脂蛋白3a含量显著升高(P<0.01),而高密度脂蛋白2a、高密度脂蛋白2b含量显著降低(P<0.01)。无论是血脂正常者还是Ⅳ型高脂血症患者,女性前β1高密度脂蛋白、高密度脂蛋白3b含量均显著低于男性(P<0.05),而高密度脂蛋白2b则显著高于男性(P<0.01)。相关分析发现,Ⅳ型高脂血症患者血清甘油三酯、甘油三酯/高密度脂蛋白胆固醇比值与前β1-高密度脂蛋白、高密度脂蛋白3a含量显著正相关(P<0.01或P<0.05),与高密度脂蛋白2b、高密度脂蛋白2a含量显著负相关(P<0.01或P<0.05)。结论Ⅳ型高脂血症患者血清小颗粒高密度脂蛋白含量明显增加而大颗粒高密度脂蛋白含量明显减少,表明高密度脂蛋白成熟代谢过程受阻,胆固醇逆向转运作用减弱;此外,与男性相比,无论是血脂正常者还是Ⅳ型高脂血症患者,女性小颗粒高密度脂蛋白含量较少而大颗粒高密度脂蛋白含量较多。

Ⅳ型高脂血症患者血清HDL亚类组成的初步研究

采用双向电泳免疫印迹检测法，分析了２４ 例正常人及 ２４ 例Ⅳ型高脂血症患者血清 Ｈ Ｄ Ｌ亚类的相对百分含量。结果显示：与正常人比较，Ⅳ型高脂血症患者血清中小颗粒的前β１  Ｈ Ｄ Ｌ和 Ｈ Ｄ Ｌ３ａ含量显著增加（ Ｐ值分别＜ ０．００１ 和＜ ０．０５），而成熟的 Ｈ Ｄ Ｌ２ｂ含量显著减少（ Ｐ＜ ０．００１）。患者血清 Ｔ Ｇ 浓度与前β１ Ｈ Ｄ Ｌ及 Ｈ Ｄ Ｌ３ａ水平呈正相关（相关系数分别为 ０．５８２ 和 ０．６９２），而与 Ｈ Ｄ Ｌ２ｂ 及 Ｈ Ｄ Ｌ２ａ 水平呈显著负相关（相关系数分别为－ ０．５０６和－ ０．５５２）。由此提示Ⅳ型高脂血症患者的 Ｈ Ｄ Ｌ成熟过程可能受阻。

Ⅲ型和Ⅳ型前列腺炎患者前列腺按摩液中锌离子浓度检测和临床价值

目的:探讨前列腺按摩液(EPS)中锌离子浓度对Ⅲ型和Ⅳ型前列腺炎诊疗的意义和参考价值。方法:根据NIH前列腺炎分型标准,将入选的173例研究对象分为ⅢA型(n=65)、ⅢB型(n=69)、Ⅳ型(n=39)前列腺炎,并以35例门诊健康体检、无前列腺炎症状者为对照组,检测4组EPS中锌离子浓度,并分析其与慢性前列腺炎症状评分(CPSI),年龄,EPS中白细胞计数、p H值等指标的相关性。结果:ⅢA型及ⅢB型前列腺炎患者EPS中锌离子浓度[(162.2±10.8)、(171.2±12.0)μg/ml]显著低于Ⅳ型及对照组[(234.6±17.9)、(259.5±14.6)μg/ml),P均<0.05]。EPS中锌离子浓度与疼痛评分、生活质量(QOL)评分、症状严重评分以及CPSI总评分均呈显著负相关(r分别为-0.284、-0.232、-0.270、-0.281,P均<0.01),与排尿症状评分无相关。EPS中锌离子浓度与白细胞计数、年龄无明确相关,与p H值呈负相关(r=-0.208,P<0.01)。结论:Ⅲ型和Ⅳ型前列腺炎患者EPS中锌离子浓度低下可能与疼痛等前列腺炎相关症状有关,EPS中锌离子浓度检测对Ⅲ型和Ⅳ型前列腺炎的诊疗具有潜在参考价值。

SEDIS Ⅳ型短周期自浮式海底地震仪及应用体会

国家海洋局第二海洋研究所新引进15台SEDIS Ⅳ型短周期自浮式海底地震仪,并成功用于2006年南海中北部海底深部结构调查。详细描述了SEDIS Ⅳ型短周期自浮式海底地震仪的各项指标、主要仪器性能,以2006年南海中北部海底深部结构调查为基础,简要介绍了该型号地震仪的设置、投放、回收方法及数据处理技术,并总结了海上作业及数据处理中获得的一些经验体会。

抗Ⅳ型变态反应中药治疗湿疹的研究

在抗Ⅳ型变态反应中药实验研究的基础上，研究治疗湿疹的中药复方。方法：将具有抑制小鼠接触性皮炎作用的中药，按中医治疗湿疹的治则配成不同方剂。研究其对二硝基氟苯诱导小鼠皮炎耳厚度、重量、真皮炎症细胞数和血浆降钙素基因相关肽（ＣＧＲＰ）的影响。以中医治疗湿疹的治则为指导，制成复方茯苓冲剂，用于治疗不包括异位性皮炎的湿疹６３例，与５９例用抗组织胺剂（作用于Ⅰ型变态反应）治疗者比较。结果：实验研究显示中药的４个方剂均有抗Ⅳ型变态反应的作用，其中以凉血清热祛风利湿方作用最强；同时该方还可上调血浆ＣＧＲＰ浓度。口服复方茯苓冲剂的治疗组临床治愈率４７．６％，对照组临床治愈率２２．０％，两组比较，有显著性差异（ｕ＝２．９５５５，Ｐ＜０．０１）。结论：中药有抗Ⅳ型变态反应的作用，复方茯苓冲剂治疗湿疹有较好的疗效。