Function of apoptosis and expression of the proteins Bcl-2,p53 and C-myc in the development of gastric cancer

INTRODUCTIONIn China ,the incidence and mortality of gastric cancer rank the second among all cancers. Recent development of cancer [1-20].The aim of this study was investigat the insight of apoptosis and bcl-2, p53 and C-myc protein expression in the development of gastric cancer .

Florogenesis and Female Gametophyte Development in <i>Allium cepa</i>L. cv. Krishnapuram

Florogenesis is one of the most complicated and interesting processes in the nature. This process involves developmental, physiological and molecular events leading to transformation from vegetative to reproductive phase for optimal seed production and the continuation of species. The basic knowledge about flowering processes, male and female sexual systems support basic and applied research and breeding programs. Most of the onion varieties from India are short day varieties, more diverse than other exotic germplasm and useful as a source of new alleles for supporting breeding programs. The present investigation was focused to study for the first time florogenesis process by scanning electron study for the first time florogenesis process by scanning electron microscopy (SEM) and development of female gametophytes by light microscopy in order to acquire basic knowledge useful for optimizing in vitro process to produce gynogenic haploid to support and speed breeding program in short-day onion Allium cepa L. cv. Krishnapuram (KP) or Bangalore Rose. This study revealed that shoot primordium differentiated into inflorescence meristem in the month of December, while seeds were planted in the field in the September. The individual florets are preceded by a variying number of floral initials. The female gametophyte developed from chalazal side megaspore. The embryo sac development is a bisporic Allium type showing short-lived antipodals. The histological study suggests that the use of big or preanthesis flower buds with embryo sac for production of gynogenic haploids to support breeding program in onion cv. Krishnapuram (KP). However further studies are needed for confirmation of this observation.

The effect of adenovirus expressing wild-type p53 on 5-fluorouracil chemosensitivity is related to p53 status in pancreatic cancer cell lines

AIM:There are conflicting data about p53 function on cellular sensitivity to the cytotoxic action of 5-fluorouracil (5-FU). Therefore the objective of this study was to determine the combined effects of adenovirus-mediated wild-type (wt) p53 gene transfer and 5-FU chemotherapy on pancreatic cancer cells with different p53 gene status. METHODS:Human pancreatic cancer cell lines Capan-1^(p53mut), Capan-2^(p53wt),FAMPAC^(p53mut),PANC1^(p53mut),and rat pancreatic cancer cell lines AS^(p53wt) and DSL6A^(p53null) were used for in vitro studies.Following infection with different ratios of Ad- p53-particles (MOI) in combination with 5-FU,proliferation of tumor cells and apoptosis were quantified by cell proliferation assay (WST-1) and FACS (PI-staining).In addition,DSL6A syngeneic pancreatic tumor cells were inoculated subcutaneously in to Lewis rats for in vivo studies. Tumor size,apoptosis (TUNEL) and survival were determined. RESULTS:Ad-p53 gene transfer combined with 5-FU significantly inhibited tumor cell proliferation and substantially enhanced apoptosis in all four cell lines with an alteration in the p53 gene compared to those two cell lines containing wt-p53.In vivo experiments showed the most effective tumor regression in animals treated with Ad-p53 plus 5-FU.Both in vitro and in vivo analyses revealed that a sublethal dose of Ad-p53 augmented the apoptotic response induced by 5-FU. CONCLUSION:Our results suggest that Ad-p53 may synergistically enhance 5-FU-chemosensitivity most strikingly in pancreatic cancer cells lacking p53 function.These findings illustrate that the anticancer efficacy of this combination treatment is dependent on the p53 gene status of the target tumor cells.

Transplantation of human hepatocytes into tolerized genetically immunocompetent rats

AIM: To determine whether normal genetically immunocompetent rodent hosts could be manipulated to accept human hepatocyte transplants with long term survival without immunosuppression. METHODS: Tolerance towards human hepatocytes was established by injection of primary human hepatocytes or Huh7 human hepatoma cells into the peritoneal cavities of fetal rats. Corresponding cells were subsequently transplanted into newborn rats via intrasplenic injection within 24h after birth. RESULTS: Mixed lymphocyte assays showed that spleen cells from non-tolerized rats were stimulated to proliferate when exposed to human hepatocytes, while cells from tolerized rats were not. Injections made between 15 d and 17 d of gestation produced optimal tolerization. Transplanted human hepatocytes in rat livers were visualized by immunohistochemical staining of human albumin. By dot blotting of genomic DNA in livers of tolerized rats 16 weeks after hepatocyte transplantation, it was found that approximately 2.5 X 10(5) human hepatocytes survived per rat liver. Human albumin mRNA was detected in rat livers by RT-PCR for 15 wk, and human albumin protein was also detectable in rat serum. CONCLUSION: Tolerization of an immuno-competent rat can permit transplantation, and survival of functional human hepatocytes.

Clinical Study on Treatment of Senile Vascular Dementia by Acupuncture

63 patients with senile vascular dementia were randomly divided into the treatment group (treated by acupuncture) and the control group (treated with piracetam). The authors observed the changes in the score of Hasegawa's dementia scale (HDS), p300, rheoencephalogram, topographic EEG, superoxide dismutase (SOD) activity in erythrocytes, and lipid peroxide (LPO) level in plasma before and after treatment. The statistical data showed that the total effective rate in the treatment group (80.6%) was significantly higher than that in the control group (25%), and the differences in the observed indexes before and after treatment were significant (P 0.05), indicating that the acupuncture treatment was superior in immediate therapeutic effect on senile vascular dementia to drug treatment.

Treatment of Migraine with Acupuncture at Points Pertaining to the Liver and Gallbladder Channels

In studying the syndrome of yang-hyperactivity, we found that most migraine patients were with hyperactivity of the liver-yang, stagnation of the liver-qiand blood stasis, and stagnation of the liverqi and deficiency of the spleen. To evaluate the needling effects on migraine and to approach its mechanism, we have launched a study in 207 cases since 1997. The results were satisfactory and reported as follows.

Seed and Wasp Production in the Mutualism of Figs and Fig Wasps

Figs (Moracea: Ficus) and fig wasps (Hymenoptera: Chlocloids: Agaonideae) depend on each other to complete their reproduction. Monoecious fig species and their pollinating wasps are in conflict over the use of fig ovaries which can either produce one seed or one wasp. From observation on Ficus virens Ait., we showed that female flowers with outer layer of ovaries (near to the wall of syconium) had no significant difference from that with inner and interval layer of ovaries (near to the syconium cavity), in which most seeds and wasps were produced. This meant that fig tree provided the same potential resource for seed and wasps production. Observation indicated that there was usually only one foundress in syconium at female flower phase and no com- petition pollinators. Measurement of the style length of female flowers and the ovipositor of pollinators indicated that most ovaries could be reached by pollinator’s ovipositor. However, at the male flower phase, production of seeds was significantly more than that of wasps including non-pollinating wasps but there was no significant difference between seed and pollinating wasp production when without non-pollinating wasps produced. This result indicated that non-pollinating wasps competed ovaries not with seeds but with pollinating wasps for ovipositing. Bagged experiment showed that the sampling fig species was not self-sterile which was important for figs and wasps to survive bad season. Seed production in self-pollinated figs was not significantly different from total wasps in- cluding non-pollinating ones. This might be related with the weaker competition among wasps since bagged figs were not easy to reach by wasps from outside.

北京女性两个相邻哺乳期体内p,p’-DDE排泄速度与富集速度研究

母乳中p,p’-DDE浓度是监测母体短期内p,p’-DDE的“静态”蓄积水平,估算婴幼儿每日摄入量的重要技术手段。本文旨在通过监测北京女性两个相邻哺乳期内母乳中p,p’-DDE浓度及变化,估算两次分娩间隔期母体内p,p’-DDE的“动态”富集速度,并根据每日摄入量掌握人体p,p’-DDE的长期变化趋势。在2009年至2019年期间,收集了43名女性首次分娩后六个月内和18名女性第二次分娩后六个月内的母乳样本,并采用气相色谱法检测了母乳中p,p’-DDE的浓度。实验结果表明,母乳中p,p’-DDE浓度在哺乳期持续下降。年龄和分娩次数是母乳中p,p’-DDE浓度的影响因素,p,p’-DDE浓度随母亲年龄增大而升高,随分娩次数增多而降低。18名母亲两个哺乳期内母乳中p,p’-DDE平均排泄速度计算结果表明,排泄速度从18.9μg/kg lipid/month降低到16.8μg/kg lipids/month。而母体两次分娩隔期内p,p’-DDE年富集速度估算值为正,分布在10.9~14.9μg/kg lipids/year之间,每日摄入量分布在29.8~40.8ng/day/kg.b.w.之间。因此北京女性哺乳期母体内p,p’-DDE月排泄速度与母体年富集速度数值相当,母体p,p’-DDE每日摄入量远低于世界卫生组织(WHO)建议值,北京女性是低风险暴露人群。

大黄对雌性幼年大鼠血清GnRH、LH、FSH、P、E2水平的影响

目的:观察大黄水提物对雌性幼年大鼠血清促性腺激素释放激素(Gn RH)、黄体生成素(LH)、卵泡刺激素(FSH)、孕酮(P)、雌二醇(E2)水平的影响。方法:4周龄雌性SD大鼠20只,随机分为正常对照组和大黄水提物2.0g/kg组,每组10只,连续灌胃给药30天。采用ELISA法检测各组大鼠血清Gn RH、LH、FSH、P、E2的水平。结果:与正常对照组大鼠比较,大黄水提物2.0g/kg组大鼠Gn RH、P、E2激素水平明显降低(P<0.05),LH、FSH激素水平明显升高(P<0.05)。结论:大黄水提物可明显影响雌性幼年大鼠下丘脑-垂体-卵巢轴的激素水平。

运动性闭经大鼠E2、P、LH变化的实验研究

为了探讨运动性月经失调的影响因素及其机制,阻止或减少运动性月经失调的发生,建立运动性闭经病症的动物模型,并检测造模组、对照组的雌激素(E2)、孕酮(P)、黄体生成素(LH)的含量的对比。结果表明:与对照组比较,增负荷+饮食限制的控制条件能够有效降低造模组大鼠血清雌激素(E2))的水平,提高了孕酮(P)的水平,具有显著性差异,而造模组大鼠血浆黄体生成素(LH)水平与对照组LH的水平几乎无变化,无显著性差异。

P53 immunohistochemical scoring:an independent prognostic marker for patients after hepatocellular carcinoma resection

AIM: To confirm if p53 mutation could be a routine predictive marker for the prognosis of hepatocellular carcinoma (HCC) patients. METHODS: Two hundreds and forty-four formalin-fixed paraffin-embedded tumor samples of the patients with HCC receiving liver resection were detected for nuclear accumulation of p53. The percent of P53 immunoreactive tumor cells was scored as 0 to 3+ in P53 positive region (【10% -, 10-30% +, 31-50% ++, 】50% +++). Proliferating cell nuclear antigen (PCNA) and some clinicopathological characteristics, including patients' sex, preoperative serum AFP level, tumor size, capsule, vascular invasion (both visual and microscopic), and Edmondson grade were also evaluated. RESULTS: In univariate COX harzard regression model analysis, tumor size, capsule status, vascular invasion, and p53 expression were independent factors that were closely related to the overall survival (OS) rates of HCC patients. The survival rates of patients with 3+ for P53 expression were much lower than those with 2+ or + for P53 expression. Only vascular invasion (P【0.05) and capsule (P【0.01) were closely related to the disease-free survival (DFS) of HCC patients. In multivariate analysis, p53 overexpression (RI 0.5456, P【0.01) was the most significant factor associated with the OS rates of patients after HCC resection, while tumor size (RI 0.5209, P【0.01), vascular invasion (RI 0.5271, P【0.01) and capsule (RI-0.8691, P【0.01) were also related to the OS. However, only tumor capsular status was an independent predictive factor (P【0.05) for the DFS. No significant prognostic value was found in PCNA-LI, Edmondson's grade, patients' sex and preoperative serum AFP level. CONCLUSION: Accumulation of p53 expression, as well as tumor size, capsule and vascular invasion, could be valuable markers for predicting the prognosis of HCC patients after resection. The quantitative immunohistochemical scoring for P53 nuclear accumulation might be more valuable for predicting prognosis of patients after HCC resection than the common qualitative analysis.

p16 gene methylation in colorectal cancers associated with Duke's staging

AIM: To explore the association of methylation of the CpG island in the promotor of the p16 tumor suppressor gene with the clinicopathological characteristics of the colorectal cancers. METHODS: Methylation-specific PCR (MSP) was used to detect p16 methylation of 62 sporadic colorectal cancer specimens. RESULTS: p16 methylation was detected in 42% of the tumors.Dukes'staging was associated with p16 methylation status.p16 methylation occurred more frequently in Dukes'C and D patients (75.9%) than in Dukes'A and B patients (12.1%). CONCLUSION: p16 methylation plays a role in the carcinogenesis of a subset of colorectal cancer, and it might be linked to poor prognosis.

A Clinical Investigation on Zhi Ling Tang for Treatment of Senile Dementia

Zhi Ling Tang (ZLT [symbol: see text], a TCM prescription designed for replenishing essence, supplementing marrow, invigorating qi, warming yang, removing blood stasis and phlegm, tonifying the brain, and invigorating mental activity) was used in 32 cases of senile dementia (SD). After treatment, the levels of serum cholesterol (Tch), triglyceride (TG), and plasma lipid peroxides (LPO) were lowered; the content of high density lipoprotein (HDL) and the activity of superoxide dismutase (SOD) in RBC significantly elevated, the cerebral blood flow was increased; latent period of P300 and P3 waves was shortened while the amplitude of P3 elevated; and topographic electroencephalogram, revised Hasegawa dementia scales (HDS) scores (P

针刺联合穴位注射治疗肝肾亏虚证轻、中度糖尿病足绝经后女性患者的效果

目的 观察针刺联合穴位注射治疗肝肾亏虚证轻、中度糖尿病足绝经后女性患者的效果。方法选取山东省第二人民医院2022年6月至2024年1月收治的86例轻、中度糖尿病足绝经后女性患者,按照随机数字表法将其分为观察组(n=43)、对照组(n=43)。对照组给予穴位注射甲钴胺治疗,观察组在对照组基础上给予针刺治疗,比较两组临床治疗有效率、疼痛评分、足部溃疡愈合情况、足背动脉血流动力学、血清相关因子水平。结果 观察组总有效率较对照组升高(P<0.05);治疗后,观察组疼痛评分低于对照组,足部溃疡面积小于对照组(P<0.05);治疗后,观察组足背动脉血流速度、搏动指数较对照组更高(P<0.05);治疗后,观察组血管内皮生长因子水平较对照组升高,同型半胱氨酸水平较对照组降低(P<0.05)。结论针刺联合穴位注射治疗肝肾亏虚证轻、中度糖尿病足绝经后女性患者的效果较好,能够促进创面愈合,改善足背动脉血流情况。

子宫营养试验检测对-壬基酚的雌激素样活性

目的 :检测对 -壬基酚 (p- NP)的雌激素样活性。方法 :采用子宫营养试验 ,以使此法作为我国筛查环境内分泌干扰物 (EEDs)的常规方法。未成年 SD雌性大鼠 (2 1d～ 2 2 d) 10 0只 ,分为 p- NP 6 0 m g/ kg、 12 0 m g/ kg和 2 4 0 m g/ kg3个剂量组 ,溶剂对照组 (花生油 )和阳性对照组 (苯甲酸雌二醇 ,E2 B) 0 .4 m g/ kg,每天一次灌胃给药 ,连续给 3d和 7d。于末次给药的第 2 4 h处死动物 ,取子宫。结果 :3d和 7d两个时段 ,E2 B、 p- NP 12 0 mg/ kg和 2 4 0 mg/ kg 2个剂量组子宫湿重、子宫 /体重比、平滑肌厚度和宫腔上皮高度与溶剂对照组相比均增高 (P<0 .0 1) ,且有明显的剂量效应关系。给 p- NP7d的未成年 SD雌性大鼠阴道开口时间提前。结论 :p- NP具有弱雌激素样活性 ,3d幼雌

对女大学生实施健身运动处方教学的实验研究

采用实验方法,结合观察、调研等形式对中华女子学院1200名女生进行《学生体质健康标准》所涉及的形态、机能、素质以及scl-90症状自陈量表的测试,选取其中133人(分为两班)作为研究对象,展开为期3个月的“运动处方”培训。结果显示:实验班(运动处方组)在素质、机能方面有较显著变化。同时,实验班(运动处方组)和对照班(体育课组)在人际关系、焦虑、偏执因子及总分上存在显著差异。这说明女大学生实施体育教学运动处方锻炼具有较强的针对性、科学性和较高的实效性,健身运动处方教学模式对促进高校女子大学生体育教学改革具有重要的推动作用。

活血胶囊对绝经后骨质疏松症模型大鼠的影响

目的观察活血胶囊对去卵巢大鼠骨质疏松症的疗效,并探讨其作用机理。方法摘除雌性Wistar大鼠双侧卵巢复制绝经后骨质疏松症模型,随机分为模型组、己烯雌酚组、活血胶囊组及假手术组。给予相应药物12周后,放射免疫法测定各组动物血清中雌二醇(E2)、促卵泡素(FSH)、促黄体生成激素(LH)水平,直接紫外法测定各组动物血清中碱性磷酸酶(ALP)、钙(Ca)、磷(P)含量,取各组动物胫骨测定骨灰重及骨Ca、P含量。结果大鼠去卵巢后血清FSH、LH、ALP、Ca、P含量显著升高,E2水平明显降低,与假手术组相比,差异有统计学意义(P<0.05,P<0.01)。经治疗后,活血胶囊组和己烯雌酚组大鼠血清中FSH、LH、ALP、Ca、P值水平下降,E2水平上升;骨灰重、骨Ca、骨P含量均有所升高,与模型组比较,差异有统计学意义(P<0.05,P<0.01)。结论活血胶囊可以通过调节雌激素水平及骨代谢达到治疗绝经后骨质疏松症的目的。

城市与农村不吸烟女性肺组织中DNA加合物含量

为更客观地评价空气污染与肺癌的关系，用３２Ｐ后标记法检测城市与农村不吸烟女性肺癌患者与非肺癌患者正常肺组织中ＤＮＡ加合物的含量。城乡妇女、城乡肺癌患者、城乡非肺癌妇女、城市肺癌妇女与农村非肺癌妇女、农村肺癌患者与非肺癌妇女之间均未见统计学差异，但发现城市患者比农村患者，肺癌患者比非肺癌患者的肺组织ＤＮＡ加合物含量高的趋势。

叶面喷肥对板栗地上器官氮磷分配的影响

以板栗‘燕山早丰’(Castanea mollissima‘Yanshanzaofeng’)为试验材料,研究了花芽分化前期不同次数(1、2、3、4次,分别记为T1、T2、T3、T4,CK为对照)的叶面喷肥对展叶期和花期板栗地上器官氮、磷分配和雌雄花序比的影响。结果表明:除花期板栗营养枝叶片的氮质量分数外,在展叶期、花期经T3处理板栗地上器官的氮、磷质量分数均高于其他处理的,且经T3处理的雌雄花序比最高。展叶期氮质量分数总体由大到小表现为花、叶片、顶梢、枝条,且花的磷质量分数也最高,N质量分数/P质量分数总体由大到小表现为叶片、花、顶梢、枝条;而花期以叶片氮质量分数最高,雌雄花的磷质量分数最高,叶片的N质量分数/P质量分数最高。且花期板栗地上各器官的氮、磷质量分数均低于展叶期,花期雌雄花、枝条的N质量分数/P质量分数也小于展叶期的,但叶片的N质量分数/P质量分数较展叶期增加。相关分析表明,展叶期板栗花与枝条的氮、磷质量分数,花期雌花簇与雄花序的氮、磷质量分数,雌雄花序比与展叶期花、花期雌花簇的氮、磷质量分数均呈显著或极显著正相关,表明雌雄花发育与营养状况尤其磷质量分数密切相关。总之,T3处理,即在花芽分化前期叶面喷施3次对当地板栗地上器官氮、磷营养积累效果最佳。

健身健美操对培养高校女生终身体育观的影响

大学体育是学校体育的最后阶段,也是培养学生终身健身的最有效阶段.从女生对体育课的兴趣,选择健身健美操的动机及锻炼价值和社会现状几个方面入手,通过高校健身健美操选修课来培养女生终身体育锻炼的意识和习惯,以此作为终身健身的手段,并从健身健美操可强身健体,树立正确的终身体育观;改变形态,塑造美;提高审美观和自身艺术修养;培养自信心,提高心理素质;具有广泛性、客观性等五个方面分析了健身健美操对女大学生终身健身的作用.