多层螺旋CT对肺结核合并肺癌患者的诊断价值

目的:研究多层螺旋CT对肺结核合并肺癌的鉴别诊断价值。方法:选择2013年3月至2015年9月在我院确诊的肺结核合并肺癌患者32例和单纯肺结核患者39例应用多层螺旋CT扫描患者肺部病变情况。结果:肺结核合并肺癌组:陈旧性肺结核28例、活动性肺结核4例;病灶位置经典部位29例、非经典部位3例,合并鳞癌11例、腺癌13例、小细胞癌5例、未分化癌3例;10例结核病灶与肺癌病灶不同侧、13例结核病灶与肺癌病灶同侧不同叶、9例结核病灶于肺癌病灶同侧同叶。单纯性肺结核组胨旧性肺结核36例、活动性肺结核3例;病灶位置经典部位34例(上叶尖段11例、后段9例、下叶背段14例)、非经典部位5例。肺结核合并肺癌组患者分叶征、毛刺征、胸膜凹陷征、阻塞性肺炎及肺不张以及棘状突起比例高于单纯肺结核组,而空泡影比例低于单纯肺结核组,差异具有统计学意义(P0.05);两组钙化、斑片条索影、结节影以及空洞或空腔比较,差异无统计学意义(P0.05)。结论:多层螺旋CT对肺结核合并肺癌具有较高的临床鉴别诊断价值。     

Infertility induced in rats by immunization with synthetic peptide segments of a sperm protein.

Three peptide segments (YAL-198, YAL-201 and YAL-212) corresponding to the extracellular domain of a human sperm protein designated as YWK-II antigen were synthesized as multiple antigen peptide (MAP). Male and female rats were immunized with the YWK-II-MAPs and fertility determined. In a group of 12 female rats immunized with YAL-198, seven animals were infertile and two animals were subfertile. When immunized with YAL-201 and YAL-212, 4 and 2 animals were infertile, respectively. In a group of 15 males immunized with YAL-198, 2 animals were infertile and 6 were subfertile. Two animals immunized with YAL-201 were subfertile. All control male and female rats immunized with bovine serum albumin and adjuvant were fertile. Sera obtained from infertile rats immunized with YAL-198 contained higher titers of antibodies compared to those obtained from fertile animals. The present study shows that immunization with synthetic peptide segments of a sperm protein can effectively reduce fertility.     

Toxoplasma Gondii: scanning electron microscope studies on the small intestine of infected and uninfected cats

The mucosal surfaces of villi from the small intestine of cats infected with Toxoplasma gondii were studied with the scanning electron microscope and compared with those from uninfected control cats. In uninfected cats villi were predominantly leaf shaped and were lined with ridges; goblet cell openings could be seen. The enterocytes had a hexagonal surface outline and were dome-shaped. Infected cats had both normal and abnormal villi. Injured villi were shortened and attained a broad leaf shape, often with blunt edges. Enterocytes containing oocysts were enlarged, and microvilli were resolvable only on these surfaces. Ruptured cells from which parasite discharge had occurred were seen. Oocysts were observed and possessed a smooth coat.     

基于活体成像的表达人PSCA抗原的小鼠肿瘤模型的建立

目的:探讨并建立可供药物评价或生物学功能研究的表达人PSCA抗原的荧光素酶小鼠肿瘤模型。方法:克隆人PSCA基因及荧光素酶基因luc,构建真核表达质粒pcDNA-PSCA及pcDNA-luc,共转染RM-1细胞株;照度计检测转染细胞的荧光素酶活性,RT-PCR及流式细胞术检测PSCA的表达,筛选出共表达荧光素酶及人PSCA的RM-PSCA/luc细胞株;将RM-PSCA/luc细胞接种C57BL/6小鼠,观察所致肿瘤的生长情况及小鼠存活状况,并对小鼠进行活体成像检测Luc的表达;采用免疫组织化学染色方法检测人PSCA在小鼠肿瘤组织中的表达。结果:筛选到了稳定共表达Luc及人PSCA抗原的RM-PSCA/luc细胞,接种实验小鼠全部成瘤,肿瘤生长迅速,小鼠平均存活38天;转染荧光素酶基因的肿瘤细胞生物特性稳定,活体成像仪检测到转染荧光素酶细胞在小鼠体内活体成像,荧光素酶表达活性的强弱能够反映肿瘤大小;免疫组织化学染色方法检测到小鼠肿瘤组织PSCA的表达。结论:成功构建了可用于活体成像表达人PSCA抗原的小鼠肿瘤模型,为相关肿瘤药物及疫苗的研发奠定基础。     

胃复安与雷莫司琼对全麻腹腔镜胆囊摘除术患者呕吐及躁动的影响

目的:探讨胃复安与雷莫司琼对全麻下腹腔镜胆囊摘除术患者术后呕吐及躁动的影响。方法:选取我院收治的全麻下腹腔镜胆囊摘除术者86例,根据术后治疗方法不同,分为两组,其中对照组予以雷莫司琼治疗,实验组在对照组基础上予以胃复安治疗。观察并比较两组患者的临床疗效、呕吐、躁动及不良反应发生情况。结果:与对照组比较,实验组临床疗效明显,差异具有统计学意义(P0.05);实验组患者呕吐次数明显低于对照组,差异具有统计学意义(P0.05);实验组患者躁动明显改善,差异具有统计学意义(P0.05);实验组不良反应发生率低于对照组,差异具有统计学意义(P0.05)。结论:胃复安与雷莫司琼能够有效治疗全麻下腹腔镜胆囊摘除术患者术后呕吐及躁动情况,提高临床疗效。     

Cytologic features of endometrial papillary serous carcinoma

Endometrial papillary serous carcinoma (EPSC) is an uncommon variant of endometrial carcinoma that histologically resembles ovarian serous carcinoma and has an aggressive clinical course. The cytomorphologic features of 17 patients with histologically confirmed EPSC of the endometrium were reviewed and compared with those of 20 patients with histologically typical endometrial adenocarcinoma (TEC). Preoperative cervicovaginal Papanicolaou smear results were available from 14 of the 17 patients with EPSC; 10 (71%) were positive, 1 (7%) was suspicious and 3 (21%) were negative for malignancy. Initial cervicovaginal smear results were available from all 20 patients with TEC; 7 (35%) were positive, 4 (20%) were atypical or suspicious and 9 (45%) were negative for malignancy. Twelve patients with EPSC had peritoneal washings or fluids examined; seven were positive and five negative. Twelve patients with TEC had peritoneal washings or fluids examined; two (17%) were positive and ten (83%) were negative. The cervicovaginal smears from patients with EPSC revealed numerous large tumor cells (with prominent nucleoli) frequently arranged in papillary clusters with background necrosis and, in two cases, amorphous material suggestive of psammoma bodies. In contrast, the smears of patients with TEC showed small to medium-sized cells with extensive phagocytosis and many background histiocytes. The diagnosis of EPSC should be considered when the cervicovaginal smear contains numerous papillary groups of large tumor cells with macronucleoli but without prominent phagocytosis, especially when structures suggestive of psammoma bodies are present. The peritoneal fluids in these patients are more often positive than in patients with TEC, a finding consistent with the propensity of EPSC to involve peritoneal surfaces.     

应用RD-PCR技术制备HIV基因芯片探针

利用限制性显示 (RD PCR)技术快速分离HIV 1基因片段制备DNA芯片探针 .以Sau3AⅠ酶切HIV基因 ,得到许多大小适合芯片的限制性酶切片段 .然后在片段两端接上接头 ,根据酶切位点、接头的序列设计通用引物 .在该通用引物的 3′端分别延伸一个碱基后 ,通过引物间的两两组合 ,将PCR反应分成 10个亚组 .纯化各组PCR产物 ,克隆到T载体上 .阳性克隆经鉴定、扩大培养后提取质粒 .以质粒为模板扩增靶片段并进行序列分析 .每个亚型得到了十几个 10 0～ 10 0 0bp的HIV基因片段 .研究表明 ,RD PCR技术是一种有效的快速制备基因芯片探针的方法     

Compartmentation of glucose 6-phosphate in hepatocytes.

Rat hepatocytes were incubated with 14C-labelled hexoses, and the specific radioactivities of glucose 6-phosphate, glucose 1-phosphate and fructose 6-phosphate were determined. (1) When suspensions of freshly isolated hepatocytes were incubated with [14C]glucose, the specific radioactivities of glucose 1-phosphate and fructose 6-phosphate were severalfold higher than that of glucose 6-phosphate. The ratios of the specific radioactivities decreased with time of incubation. These relationships were also found when incubations were carried out with primary cultures of rat hepatocytes or with crude homogenates of hepatocytes, but not with isolated nuclei. (2) When cells were incubated with [14C]fructose, the ratios of the specific radioactivities were higher than with [14C]glucose, and also decreased with time. (3) Paired incubations were carried out with a mixture of galactose and fructose, with one or other sugar being labelled with 14C. The specific radioactivity of glucose released into the medium was greater than that of glucose 6-phosphate when fructose was labelled, but not when galactose was labelled. Furthermore, glucose 6-phosphate and glucose in the medium differed with regard to the distribution of 14C between C-1 and C-6. These results are interpreted as evidence that glucose 6-phosphate in hepatocytes does not exist as a homogeneous pool, but that subcompartments exist which are associated with glucose phosphorylation, gluconeogenesis and glycogenolysis.     

耗竭性游泳对大鼠心肌线粒体膜功能的影响

耗竭性游泳对大鼠心肌线粒体膜功能的影响王文信,丁树哲,许豪文（华东师范大学体育系运动生化实验室,上海２０００６２）关键词心肌线粒体,内膜表面电位,游离钙,总钙,合成活力长时间耗竭性游泳或跑步引起心肌、骨骼肌、肝脏等线粒体结构和功能变化,这些变化可能与...     

Parental origin of chromosome abnormalities in spontaneous abortions

Summary Tissue cultures were initiated from 130 spontaneous abortion specimens and 81 were successfully karyotyped. Chromosome abnormalities were found in 50 cases: 12 with XO, 27 with trisomy, 6 with triploidy, 1 with tetraploidy and 4 others. The parental origin was determined in 11 cases of trisomy for an acrocentric chromosome. Two cases were uninformative while 9 non-disjunctions were determined and occurred during meiosis I: 7 were maternal and 2 paternal (both with trisomy 21). Three out of 7 cases with trisomy 16 were informative and resulted from a divisional error during the first meiotic division in the mother. All cases of triploidy were informative. They resulted from non-reduction during meiosis I in the mother (2) or dispermy (4).     

色素内镜联合CRP和TRF在青海地区早期食管癌患者的诊断价值

摘要 目的：探讨色素内镜联合C反应蛋白(C-reactive protein,CRP)和转铁蛋白(Transferrin,TRF)在青海地区早期食管癌患者的诊断价值。方法：2018年6月至2020年3月选择在本院进行食管癌筛查的青海地区患者250例,所有患者都给予色素内镜检查,同时给予血浆CRP和TRF检查并判断诊断价值。结果：在250例患者中,病理诊断为原位癌28例,高级别上皮内瘤变10例,低级别上皮内瘤变12例,慢性炎症200例;其中早期食管癌38例。卢戈液色素内镜显示不染色47例,淡染色95例,浓染色108例。早期食管癌患者的血浆CRP值都高于非早期食管癌患者,TRF值低于(P<0.05)。Pearson相关性分析显示早期食管癌与色素内镜卢戈液不染色、CRP、TRF值存在相关性(P<0.05)。色素内镜联合CRP和TRF在青海地区早期食管癌的诊断敏感性与特异性分别为97.4 %和100.0 %。结论：色素内镜联合CRP和TRF在青海地区早期食管癌患者诊断中的应用具有很好的敏感性与特异性,能有效预测早期食管癌发生情况,对早期诊治早期食管癌具有一定的指导意义。     

猴肝细胞膜脂蛋白(a)受体的研究

猴肝细胞膜蛋白经 SDS- PAGE和蛋白转移电泳后用免疫印迹法测定 ,硝酸纤维素膜分别与抗牛肾上腺皮质 LDL受体的抗体、LDL、Lp( a)和 PLG温育后见有 3条不同的蛋白条带 ,分子量分别为 370 kd、2 90 kd和 80 kd.用酶标法测定猴肝细胞膜蛋白 ,发现经 Lp( a) + PLG温育后用 Lp( a)抗体反应的结果与 Lp( a)温育后用 Lp( a)抗体反应的结果比较无显著差异 ,而经 Lp( a) + PLG温育后用 PLG抗体反应的结果比单独用 PLG温育后用 PLG抗体反应的作用强 ;同样经 Lp( a) +LDL温育后用 Lp( a)抗体反应的结果与经 Lp( a)温育后用 Lp( a)抗体反应的结果比较无显著差异 ,而经 Lp( a) + LDL温育后用 LDL抗体反应比单独经 LDL温育后用 LDL抗体的反应强 ,排除Lp( a)与 PLG和 LDL的交叉反应 ,实验认为猴肝细胞膜上可能同时存在 LDL受体、PLG受体和Lp( a)受体     

榄香烯联合GP 化疗方案治疗晚期肺腺癌脑转移的临床观察

目的:观察中药制剂榄香烯联合GP化疗方案治疗晚期肺腺癌脑转移的疗效。方法:选取2009年6月28日至2011年5月30日就诊于我院的晚期肺腺癌脑转移患者34例,将34例晚期肺腺癌脑转移患者随机分为两组(A组和B组),A组:治疗组,17例,并给予患者榄香烯静脉滴注和GP化疗方案;B组:对照组,17例,给予患者GP化疗方案;观察两组疗效和安全性,并记录治疗前后相关的指标变化。结果:2个疗程的化疗结束后,A组:10例患者复查脑核磁发现脑转移瘤较前缩小,病灶部分缓解(P R);6例脑转移瘤病灶稳定(SD);1例疾病进展(PD);B组:5例患者复查脑核磁发现脑转移瘤较前缩小,病灶部分缓解(P R);9例脑转移瘤病灶稳定(SD);3例疾病进展(PD)。结论:采用榄香烯联合GP化疗方案治疗晚期肺腺癌脑转移,能有效地改善患者生活质量,疗效满意。     

Membrane-bound heparin binding proteins from HL-60 cells purified in a two-step affinity chromatography differentially eluted with divalent cations

Solubilized membrane proteins from HL-60 cells were separated by two-step affinity chromatography. Proteins eluted with MgCl2 in the first heparin-gel were applied to the second heparin-gel and eluted with CaCl2. The eluted proteins were analysed and purified by electrophoresis. N-terminal amino acid sequences of eight proteins on the characteristic bands were determined. Homology search for the sequences indicated that three microsomal proteins, two nuclear proteins and a glycolytic enzyme were eluted with divalent cations, whereas a nuclear ribonucleoprotein and a membrane-cytoskelton linker protein were not dissociated with divalent cations, but with 2 M NaCl. Heparin affinity chromatography combined with differential elution with divalent cations can be a useful method for separation of membrane proteins.     

Transmission of Salmonella enterica serotype Typhimurium in poultry with and without antimicrobial selective pressure

AIMS: To determine the effect of antimicrobial selective pressure on the transmission of antimicrobial resistant and sensitive strains of Salmonella in poultry. METHODS AND RESULTS: Eight pens housed 12 broiler chicks each. Two chicks in four of the pens were inoculated with a Salm. Typhimurium strain resistant to 12 antimicrobials (including tetracycline), and two chicks in each of the four other pens were inoculated with a strain sensitive to all antimicrobials tested. Two pens inoculated with each strain were treated with chlortetracycline and two were not. Chicks were killed on day 7 and caeca were cultured for Salmonella. Experiments were performed independently twice. Chicks exposed to pen mates inoculated with the resistant strain and treated with tetracycline were 90% positive for Salmonella; whereas 60% of chicks given no antimicrobials were positive. Chicks exposed to the sensitive strain were 95% positive with tetracycline treatment and 90% positive without treatment. CONCLUSIONS: A multidrug-resistant Salm. Typhimurium strain had significantly increased transmission when chicks were treated with tetracycline. Transmission of a sensitive strain was not inhibited by antimicrobial selective pressure at recommended therapeutic dose. SIGNIFICANCE AND IMPACT OF THE STUDY: This study demonstrates that antimicrobial usage may influence the transmission of antimicrobial-resistant pathogens in poultry.     

Serum lipids and glucose as associated with hemoglobin levels and copper and zinc intake in young adults

The association of copper and zinc intake with serum total cholesterol, HDL-cholesterol, triglycerides, and glucose concentrations were studied in young adults (N=59). Three-day diet records, hair, fasting blood, and overnight urine samples were collected from each subject. Higher hemoglobin concentrations, diet zinc intake, and serum copper:zinc ratios were associated with lower HDL-cholesterol concentrations. Higher hemoglobin and hair copper concentrations were associated with higher cholesterol concentrations. Higher serum copper concentrations were associated with higher triglyceride concentrations and with lower glucose concentrations. Greater hematocrits were associated with lower triglyceride concentrations. Hemoglobin levels had the strongest relationship with cholesterol and HDL-cholesterol. These results appeared inconsistent with the hypothesis on copper:zinc imbalance and reports from animal studies.     

THE TAXONOMY OF THE PSYCHROPHILIC MEAT-SPOILAGE BACTERIA: A REASSESSMENT

SUMMARY: A study was made of selected properties of 189 psychrophilic bacteria isolated from chilled beef and associated sources. Of these, 182 were Gram-negative and 7 were Gram-positive. Of the former, 128 were typical pseudomonads with polar flagella. They were resistant to penicillin and oxidized glucose to acid. There were 52 non-motile Gram-negative bacteria of which 42 were judged to be pseudomonads on the basis of penicillin resistance and the oxidation of glucose to acid. Flagellar characters were associated with the production of green pigment, with the production of acid from lactose and with resistance to several antibiotics.     

奥沙利铂联合参芪扶正注射液对原发性肝癌患者AFP与GP73 水平的影 响及临床疗效

目的:探讨奥沙利铂联合参芪扶正注射液对原发性肝癌患者AFP,GP73及临床疗效的影响。方法:收集我院收治的原发性肝癌患者80例,随机分为对照组和实验组,每组各40例,对照组患者给予奥沙利铂联合卡培他滨化疗,实验组患者在此基础上给予参芪扶正注射液静脉滴注。观察并比较两组患者治疗前后血清AFP及GP73水平、生活质量以及临床疗效。结果:与治疗前相比,两组患者的AFP、GP73水平均下降,差异具有统计学意义(P0.05);与对照组相比,实验组患者的AFP、GP73水平较高,生活质量提高率较高,差异具有统计学意义(P0.05),临床治疗总有效率以及总稳定率较高,差异具有统计学意义(P0.05)。结论:奥沙利铂联合参芪扶正注射液能够降低原发性肝癌患者AFP,GP73水平,提高患者生活质量,临床疗效较好。     

Age distribution and fertility of populations of the arctic-alpine species Oxyria digyna

Age distributions and fruit production of populations of Oxyria digyna (L) Hill were studied in Norway and Greenland. The observed age distributions were described by the negative exponential function and by the power function. Three kinds of distributions were observed: steep, flat and bell-shaped with the corresponding hint production: 33–917, 8–108 and 76–303 fruits per individual. The population with the steep age distributions and high fruit productions were assumed to be increasing. They were found in sites with almost no vegetation (≤10% cover). The populations with the flat age distributions and the low fruit production were assumed to be stable. They were found in sites with a vegetational cover of 50–75%. The populations with the bell-shaped age distributions and the intermediate fruit productions were assumed to be decreasing. They were found in sites with a closed vegetation (cover ≥100%).     

Different products for biological control of Botrytis cinerea examined on wounded stem tissue of tomato plants

For the moment the agents that are used against Botrytis cinerea, in glasshouses were tomatoes are cultivated, are from chemical origin. For reducing the use of chemical agents in the future it is important to search for effective biological control agents against the fight of Botrytis cinerae. The following biological products Vital pasta, Vital gel and Elot-Vis were examined in there possibility to control Botrytis cinerea. Elot Vis was tested out in experiments that were carried out in climate chambers were leafs of 3 week old tomato plants were artificially infected with Botrytis cinerea spores. Also the biological products of Vital were first investigated in experiments that were carried out in climate chambers. In stead off leafs of tomato plants it were stem wounds of tomato plants who were treated with the pasta or the gel that was spread over the wounded surface after this has been inoculated with a suspension of conidia of Botrytis cinerae. The results of these first tests that were executed in the climate chambers were the circumstances for Botrytis cinerea were ideal seemed promising. In the next step these products were tested out on large scale in glasshouses. For each plant 5 wounds were created by removing the leafs, these wounds were or first treated with the Biological product and thereafter artificially infected with Botrytis cinerea spores to check out if these products can be used as a preventive agent or the wounds were first inoculated with a suspension of Botrytis cinerea spores and thereafter treated with the product. For the product Elot-Vis a few plants were totally sprayed with an Elot-Vis suspension before leafs were removed and the wounds were inoculated with conidia of Botrytis cinerea to check out if this product was able to activated the induced systemic resistance pathway. The experiments that were executed in glasshouses showed different percentages of succeeded Botrytis cinerea infections. This is probable due to the different weather conditions during both days that the experiments were executed. For the wounds that were treated with pasta it was difficult to distinguish wounds were Botrytis cinerea succeeded to infect the plant, because these wounds frequently didn't show any sign of infection on the surface but when the wounds with the pasta were cut open it was possible to see Botrytis cinerea infections inside the stem.