聚合酶

Methods The activities of liver microsomal erythromycin N-demethylaseand aminopyrine N-demethylase were measured by spectrophotometry. The levels of mRNA expressions of CYP3A1, CYP1A2, CYP2E1, mdrla and mdrlb in hepatic microsome were determined with RT-PCR method.

用分光光度法测定大鼠肝微粒体红霉素N-脱甲基酶、氨基比林N-脱甲基酶的活性，用逆转录聚合酶链反应技术测定大鼠肝脏CYP3A1、CYP1A2、CYP2E1、mdr la和mdr lb基因的水平。

The gene CD18 segment was amplified by reverse transcriptase PCR including the mutation site 383 of CD18 mRNA coding sequence, and the PCR product was digested by TaqⅠrestriction endonuclease, which was regarded as the diagnosed technology of BLAD.

用反转录-聚合酶链反应方法扩增含有383位碱基突变的CD18基因片段，然后对扩增产物用限制性内切酶TaqⅠ进行酶切处理，根据电泳后酶切片段来进行诊断。

Methods level of telomerase activation and PCNA expression were detected in 80 cases of breast cancer,36 cases of side-cancer tissues and 10 cases of lacteal gland benign lesion using TRAP-PCR-ELISA and S-P immunohistochemistry technique.

采用端粒重复序列扩增聚合酶链反应-酶联免疫吸附测定法(TRAP-PCR-ELISA)和免疫组织化学链霉素生物蛋白过氧化物酶法对80例乳腺癌组织、36例乳腺癌相应癌旁组织和10例乳腺良性病变的端粒酶活性及增殖细胞核抗原进行检测。

Methods The level of telomerase activation and PCNA expression were detected in 80 cases of breast cancer,36 cases of side-cancer tissues and 10 cases of lacteal gland benign lesion using TRAP-PCR-ELISA and S-P immunohistochemistry technique.

采用端粒重复序列扩增聚合酶链反应-酶联免疫吸附测定法(TRAP-PCR-ELISA)和免疫组织化学链霉素生物蛋白过氧化物酶法对80例乳腺癌组织、36例乳腺癌相应癌旁组织和10例乳腺良性病变的端粒酶活性及增殖细胞核抗原进行检测。

Methods The level of telomerase activation and PCN A expression were detected in 80 cases of breast cancer,36 cases of side-cancer tissues and 10 cases of lacteal gland benign lesion using TRAP-PCR-ELISA and S-P immunohistochemistry technique.

采用端粒重复序列扩增聚合酶链反应-酶联免疫吸附测定法(TRAP-PCR-ELISA)和免疫组织化学链霉素生物蛋白过氧化物酶法对80例乳腺癌组织、36例乳腺癌相应癌旁组织和10例乳腺良性病变的端粒酶活性及增殖细胞核抗原进行检测。

To explore the function of PDE in canine central nerve , gene expression of 18 PDE subtypes in different fractions of canine central nerve (cerebrum,cerebellum,myelencephalon and spinal cord) were detected by RT-PCR,and PDE activity was calculated by the content changes of cyclic nucleotides before and after the PDE reaction examined by high performance liquid chromatography.

为探明磷酸二酯酶(phosphodiesterase，PDE)在犬中枢神经活动中的作用，采用反转录聚合酶链反应检测18个PDE亚型在犬中枢神经不同部位中(大脑、小脑、延髓和脊髓各段)的表达分布，以高效液相色谱法检测环核苷酸在酶反应前后的含量变化，计算PDE活性。

For most viruses,there is aneed for antimicrobials that target unique viral molecular properties.Acycloviris one such drug.It is activated into ahuman herpesvirusDNA polymerase inhibitor exclusively by HHV kinases and,thus,does not suppress other viruses.Here,we show that ACV suppresses HIV-1in HHV-coinfected human tissues,but not in HHV-free tissue or cell cultures.However,addition of HHV-6-infected cells renders these cultures sensitive to anti-HIV ACV activity.We hypothesized that such HIV suppression requires ACV phosphorylation by HHV kinases.Indeed,an ACV monophosphorylated prodrug bypasses the HHV requirement for HIV suppression.Furthermore,phosphorylated ACV directly inhibits HIV-1reverse transcriptase,terminating DNA chain elongation,and can trap RT at the termination site.These data suggest that ACV anti-HIV-1activity may contribute to the response of HIV/HHV-coinfected patients to ACV treatment and could guide strategies for the development of new HIV-1RT inhibitors.

对大多数病毒而言，都需要有针对其分子特性的靶向杀毒剂阿昔洛韦就是这样一种靶向药物在人疱疹病毒酶的特定作用下，阿昔洛韦被激活成为人疱疹病毒DNA聚合酶抑制剂，因此不能再抑制其它的病毒我们的研究发现阿昔洛韦在共感染人疱疹病毒的组织中可以抑制HIV-1，但在无人疱疹病毒感染的组织或细胞中无此作用然而，加入人疱疹病毒-6感染的细胞却使得其对抗HIV的阿昔洛韦变得敏感我们推测这种抑制作用依赖于人疱疹病毒酶导致的阿昔洛韦磷酸化实际上，单磷酸化的阿昔洛韦前体药物无需人疱疹病毒的参与即可抑制HIV此外，磷酸化的阿昔洛韦能直接抑制HIV-1逆转录酶，将其阻止在终止位点，从而终止DNA链的延长这些结果提示阿昔洛韦的抗HIV-1活性决定了艾滋病病毒/人疱疹病毒共感染的患者对阿昔洛韦的治疗反应，也有助于开发新的HIV-1逆转录酶抑制剂

Methods With polymerase chain reaction-single-strand conformation polymorphism combining argentation and glue retrieval, DNA sequencing, and restriction fragment length polymorphism, the SNP of the 50 exons in all the coding regions of ABCA1 gene was detected in 112 patients with established diagnosis of coronary heart disease.

通过聚合酶链反应－单链构象多态性分析结合银染后胶回收、DNA测序和限制性内切酶酶切分析方法检测112例明确冠心病诊断患者的ABCA1基因全部编码区50个外显子的SNP。

To study genetic mutations of methylenetetrahydrofolate reductase C677T and cystathioinine-β-synthase T833C related to homocysteine metabolism in patients with ischemic stroke, the MTHFR gene C677T gene mutation and the CBS T833C gene mutation were detected by PCR-RFLP or ARMS method in 74 patients with ischemic stroke and 83 normal people for control. Results showed that the frequencies of MTHFR genet homogenetic type(2.7%), heterogenetic type(51.4%) and T allele(28.4%) in ischemic group were higher than those in control group(1.2%, 39.8% and 21.1%, respectively).

为研究同型半胱氨酸代谢相关酶亚甲基四氢叶酸还原酶基因C677T和胱硫醚-β合成酶基因T833C位点碱基突变与缺血性脑卒中的关系，对74例缺血性脑卒中患者和83例健康对照者，采用聚合酶链反应-限制性片段长度多态性技术检测MTHFR基因C677T基因型，用扩增阻滞突变体系法检测CBS基因T833C突变。

Micrococcal nuclease hypersensitive DNA fragments were either cloned directly, or mapped onto the genome by hybridization with oligo-nucleotide probes on a 244K Agilent array-CGH chip. The array-CGH mapping was confirmed for nuclease sensitivity by PCR after MNase digestion and by Southern blot analysis.

我们利用小球菌核酸酶超敏感的去氧核醣核酸片段直接选殖或是将其作为寡核苷酸探针於安捷伦244k寡核苷酸阵列-比较基因体杂合晶片上，进行基因体定位，并利用聚合酶链索反应和南方墨点法侦测其核酸酶敏感程度，以确认结果之可靠性。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。