博爱县汉族育龄女性MTHFR与MTRR基因多态性分布

目的调查博爱县汉族育龄女性叶酸代谢关键酶MTHFR C677T、A1298C与MTRR A66G基因多态性,获取本地区汉族育龄女性叶酸利用能力,为叶酸营养增补方案提供分子医学理论依据,更好地指导孕期保健。方法选取2018年3月至2019年9月在博爱县妇幼保健院进行备孕和孕期检查的448例女性作为研究对象。采集口腔黏膜上皮脱落细胞,抽提基因组DNA,使用荧光定量PCR方法检测MTHFR C677T、A1298C和MTRR A66G基因多态性。结果入组对象的基因多态性分布符合遗传平衡。汉族女性MTHFR 677CC、CT、TT的基因型频率分别为12.7%、42.2%、45.1%,C、T等位基因频率分别为33.8%、66.2%;MTHFR 1298AA、AC、CC的基因型频率分别为77.7%、19.9%、2.5%,A、C等位基因频率分别为87.6%、12.4%;MTRR 66AA、AG、GG的基因型频率分别为57.1%、38.6%、4.2%,A、G等位基因频率分别为76.5%、23.5%。汉族女性MTHFR C677T和A1298C两位点连锁有6种组合,频率最高的是TT/AA(45.1%),而后依次为CT/AA(27.7%)、CT/AC(14.5%)、CC/AC(5.4%)、CC/AA(4.9%)、CC/CC(2.5%),无CT/CC、TT/AC和TT/CC组合。MTHFR C677T和A1298C两个位点构建的单倍型存在3种组合:TA(66.2%)、CA(21.4%)、CC(12.4%),两位点间存在完全连锁不平衡(D’=1.0,r~2=0.277)。结论博爱县汉族女性叶酸代谢相关基因位点风险型MTHFR 677TT占比高,叶酸利用能力不足,需进行个体化干预及重点人群孕期管理,从而达到一级预防出生缺陷的目的。     

甲烯四氢叶酸还原酶基因多态性与2型糖尿病的关系

目的:探讨中国人群2型糖尿病患者中甲烯四氢叶酸还原酶(MTHFR)基因多态性与2型糖尿病发病的关系.方法:采用PCR技术和限制性内切酶片段长度多态性 (RFLP) 的方法检测患者的MTHFR基因677C→T突变,统计各组对象的突变频率. 结果:MTHFR基因677C→T突变型等位基因(T)频率在病例组和对照组中差异无显著性(χ2=2.29,P>0.05),TT、CT和CC 3种基因型频率差异无显著性.基因型频率的相对风险分析,CT基因型患2型糖尿病风险是CC基因型的1.96倍,TT基因型患2型糖尿病风险是CC基因型的2.57倍.结论:MTHFR基因突变型等位基因与2型糖尿病发生无必然的联系,突变基因型并没有增加2型糖尿病的发病风险.     

贵州3个民族亚甲基四氢叶酸还原酶基因的遗传多态性

目的对贵州侗族、布依族、苗族亚甲基四氢叶酸还原酶(MTHFR)基因多态性进行研究。方法应用TaqManMGB探针基因分型方法检测贵州3个民族MTHFR基因两个SNP(677及1 298位)多态位点的基因频率及基因型频率,并构建单倍型。结果 MTHFR 677C/T位点3个民族之间基因型和等位基因频率差异有统计学意义(P<0.05),其中布依族与苗族间基因型和布依族与侗族、苗族间等位基因频率差异有统计学意义(P<0.01)。MTHFR 1298A/C位点3个民族之间基因型和等位基因频率差异无统计学意义(P>0.05)。677CC/1298AA双野生型频率以布依族最低,3个民族中均未见677TT/1298CC双纯和突变及677TT/1298AC组合。3个民族中以677C-1298A(54.3%)单倍型所占平率最高。布依族和苗族两位点间存在677C/T和1298A/C连锁不平衡现象。结论 MTHFR基因677C/T和1298A/C位点在不同民族、不同地区间的分布存在明显差异。     

亚甲基四氢叶酸还原酶基因C677T多态与上海地区汉族人群骨质疏松症遗传易感性的相关性

目的探讨亚甲基四氢叶酸还原酶基因(MTHFR)C677T多态与上海地区汉族人群骨质疏松症遗传易感性的关系。方法采用TaqMan方法检测230例骨质疏松症患者(骨质疏松症组)与291名健康者(健康对照组)的MTHFR C677T的基因型分布及差异。结果骨质疏松症组中,T等位基因频率为43.0%,高于对照组的35.9%,T等位基因的骨质疏松症发病风险是C等位基因的1.35倍(95%CI为1.05～1.73,P=0.019)。与CC纯合子相比,CT杂合子的骨质疏松症风险增加至1.44倍(95%CI为0.97～2.15,P= 0.074),而TT纯合子的骨质疏松症风险显著增加至2.20倍(95%CI为1.24～3.87,P=0.007)。将CC、CT和TT视为不同的等级,经趋势Armitage检验,存在等位基因剂量-反应关系(P=0.017)。结论MTHFR C677T增加骨质疏松症发病风险,并呈等位基因剂量-反应关系,TT基因型是上海地区汉族人群患骨质疏松症的一个遗传易感因素。     

叶酸代谢关键酶基因多态性与唐氏综合征发生关系的研究

目的 研究叶酸代谢中关键酶亚甲基四氢叶酸还原酶基因(MTHFR C677T)及蛋氨酸合成酶还原酶基因(MTRRA66G)多态性与唐氏综合征发生的关系.方法 采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)法对32例唐氏综合征患儿母亲及70例未生育该种患儿的女性MTHFR C677T、MTRR A66G进行基因分析.比较各组基因型和等位基因频率分布有无差异.结果 MTHFR C677T突变型等位基因(T)频率,MTRR A66G突变型等位基因(G)频率在实验组和对照组中有显著性差异,CC、TT、GG基因型频率分布差异有显著性意义(P＜0.05).结论 MTHFR C677T、T677T基因型、MTRR G66G基因型增加了唐氏综合征的发生风险,MTHFR C677C基因型可能是降低唐氏综合征发生的保护性因素.     

成都市郫县汉族女性MTHFR、MTRR基因多态性分布研究

目的:探讨成都市郫县汉族女性亚甲基四氢叶酸还原酶(MTHFR)C677T位点、A1298C位点及甲硫氨酸合成酶还原酶(MTRR)A66G位点基因多态性的分布特征。方法:以郫县汉族女性为研究对象,提取4865例汉族女性的口腔黏膜上皮细胞的基因组DNA,检测MTHFR和MTRR基因多态性。统计分析本地区基因多态性的分布特征,并与已报道的其他地区进行比较。结果:郫县汉族女性的MTHFR 677TT纯合子基因型频率为15.1%,MTHFR 1298CC纯合子基因型频率为4.4%,MTRR66GG纯合子基因型频率为6.6%。MTHFR基因多态性位点与已报道的淄博、郑州、镇江、惠州及琼海的数据相比差异显著(P<0.05),MTRR基因多态性位点与惠州、琼海差异显著(P<0.05)。与已报道的武汉数据进行比较,仅MTHFR C667T等位基因频率差异显著(P<0.05)。与已报道的德阳数据比较,MTHFR C667T基因型、等位基因频率均无显著差异(P>0.05),MTHFR A1298C、MTRR A66G的基因型、等位基因频率均差异显著(P<0.05)。结论:郫县汉族女性MTHFR和MTRR基因多态性具有不同于其他地区的分布特征。     

深静脉血栓形成与MTHFR基因多态性的研究

目的:探讨N~5,N~(10)-亚甲基四氢叶酸还原酶(MTHFR)基因多态性与国人深静脉血栓形成(DVT)的关系。方法:采用PCR-RFLP检测73例DVT患者和109名健康对照者MTHFR C677T、A12989C突变,计算病例组与对照组的基因型频率、等位基因频率以及突变与DVT的相关性。结果:病例组677TF、677CT基因型频率和T等位基因频率分别为38.4％、49.3％和63.0％,明显高于对照组(分别为15.6％、46.8％和39.0％。x~2=19.393,P<0.01;x~2=20.200,P<0.01)。677TT和677CT基因型的个体比677CC基因型的个体发生DVT的相对危险分别约高7或3倍(OR_(TT)=7.503,95％CI为2.931～19.207;OR_(TC)=3.215,95％CI为1.391～7.434)。病例组与对照组MTHFR 1298各基因型和等位基因分布无差异(x~2=3.533,P>0.05;x~2=0.100,P>0.05),但1298CC 677CC基因型的个体比1298AA 67CC基因型的个体发生DVT的相对危险约高16倍(OR=16.500,95％CI为1.353～201.290)。结论:MTHFR基因C677T和A1298C突变可能为东北地区人群DVT的危险因素。     

亚甲基四氢叶酸还原酶基因多态性与胃癌关系的研究

目的 探讨重庆地区人群亚甲基四氢叶酸还原酶基因多态性与胃癌的关系。方法 采用聚合酶链反应和限制性片段长度多态性技术，检测66例胃癌和101例正常对照的MTHFR基因C677T多态性。结果 MTHFRC677T呈多态性，可分为3种类型：677CC、677CT、677TT。胃癌组3种基因型频率分别为：677CC45．5％、677CT40．9％、677TT13．6％，等位基因频率677C为65．9％，677T为34．1％。对照组中677基因频率分别为：677CC48．5％、677CT42．6％、677TT8．9％，等位基因频率677C为68．8％，677T为31．2％，胃癌组与对照组相比无显著差异。以677CC基因型作为参考，胃贲门癌677CT基因型OR为0．21．95％CI(0．03～0．99)，677CT TT基因型0R为0．26，95％CI(0．07～0．98)；胃体癌677TT基因型0R为3．63，95％CI(1．02～12．72)。结论 重庆地区人群中，亚甲基四氢叶酸还原酶基因C677T多态性是胃贲门癌的保护因素，是胃体癌的危险因素.     

武汉市汉族女性MTHFR C677T基因多态性分布研究

目的探讨武汉市汉族女性亚甲基四氢叶酸还原酶(MTHFR)C677T基因多态性的分布特征,为本地区育龄女性个性化孕期保健奠定遗传学基础。方法通过横断面调查研究武汉市1 438例育龄汉族女性MTHFR C677T基因型,采用统计学方法分析MTHFR C677T基因多态性分布特征在不同年龄、地域之间的差异。结果武汉市MTHFR C677T基因型中CC、CT、TT基因型频率分别是37.1%、47.3%、15.6%,本地区汉族女性MTHFR C677T基因型频率及等位基因频率与其他非湖北省城市(乌鲁木齐、延边、长春、廊坊、烟台、郑州、湘潭、九江、镇江、南宁、琼海)比较差异有统计学意义(P0.05),与湖北省内其他城市(建始、荆州)相比差异无统计学意义(P0.05)。MTHFR C677T基因多态性分布在各年龄组间差异无统计学意义(P0.05)。结论武汉市女性MTHFR C677T基因多态性分布与其他地区相比有一定差异,具有地区特征性。     

重庆地区脑卒中患者Hcy水平及MTHFR C677T基因多态性研究

目的 研究重庆地区脑卒中患者血浆同型半胱氨酸(Hcy)水平及亚甲基四氢叶酸还原酶(MTHFR) C677T基因多态性的分布.方法 选取2015年4～11月在该院神经内科住院并诊断为脑卒中的患者共292例,其中排除52例未检测Hcy水平的患者,选取剩余的240例(男116例,女124例)作为本次研究对象.采用酶循环法检测患者Hcy水平.提取患者全血DNA,采用基因芯片技术检测其MTHFR C677T基因的多态性.结果 共检测出3种不同的MTHFR基因型:C677C型、C677T型、T677T型,频率分别为42.9％、44.2％、12.9％,其中C等位基因频率为65％,T等位基因频率为35％.CC基因型在男女之间的分布比较,差异有统计学意义(P=0.003),C等位基因在男性患者中的频率明显高于女性患者(P＜0.05).重庆地区与河南豫北地区脑卒中患者MTHFR C677C基因型与T677T基因型分布比较,差异有统计学意义(P＜0.05).TT型的Hcy水平与CC、CT型比较差异有统计学意义(P＜0.01).结论 重庆地区脑卒中患者MTHFR C677T基因存在多态性分布,且与河南豫北地区存在差异;MTHFR C677T基因多态性与Hcy水平相关,TT基因型的Hcy水平明显高于CC、CT基因型.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

Dr.Zhang Ren''''s Experience in the Acupuncture Treatment of Different Diseases with the Same Therapeutic Principle

Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.     

Luo Lingjie''''s Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

猪肺磷脂注射液联合经鼻持续气道正压通气对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性的影响

目的 探讨猪肺磷脂注射液联合经鼻持续气道正压通气(NCPAP)对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性(CK-MB)的影响.方法 选取呼吸衰竭早产儿80例,分为观察组和对照组各40例.对照组采用NCPAP给氧治疗,观察组给予NCPAP给氧联合猪肺磷脂气管内给药.观察两组患儿治疗前及治疗12h、24 h后PaO2、PaCO2、血氧饱和度(SaO2)、pH的变化情况,检测治疗前及治疗5d后血清CK-MB水平;评估两组患儿的临床治疗效果.结果 两组患儿PaO2、PaCO2、SaO2、pH比较,差异均有统计学意义(P＜0.05),其中观察组治疗后的PaO2、SaO2、pH均高于对照组,PaCO2则低于对照组.两组的PaO2、SaO2、pH均随观察时间延长而升高(P＜0.05),PaCO2均随观察时间的延长而降低(P＜0.05).观察组治疗有效率为87.5％,显著高于对照组的70.0％ (P ＜0.05).治疗5d后两组患儿血清CK-MB水平均较前降低(P＜0.05),且观察组明显低于对照组(P＜0.05).结论 猪肺磷脂注射液气管内给药联合NCPAP可以显著降低呼吸衰竭早产儿CK-MB的含量,提高治疗有效率,起到很好的呼吸循环支持作用.     

Survey and practice of reporting quality of randomized controlled clinical trials on traditional Chinese medicine

Evidence obtained from randomized controlled trials （RCTs） has been generally accepted as the gold standard in the evaluation of clinical effectiveness. Readers need to understand the trial design, implementation, results, analysis and interpretation, so as to fully Jnderstand the results of RCTs. Thus, the investigators of RCTs have to report these items in a complete, accurate and clear manner. Since 1998, we have conducted several evaluations on the reporting quality of RCTs published in Chinese journals on traditional Chinese medicine （TCM） and results have shown that there is an urgent need for higher quality RCTs on TCM.     

TCM Treatment of Ankylosing Spondylitis by Tonifying the Kidney and Strengthening the Governor Vessel

Ankylosing spondylitis is a chronic and progressive disorder with inflammation mainly involving the central axis joints. It mainly affects the cervical spine and the lumbosacral area, with the pathogenesis closely related to the kidney and the Governor Vessel (GV). TCM holds that the syndrome is deficiency in origin and excess in superficiality, which is due to insufficiency of the kidney, deficiency of GV, and blocking of the channels with the invasion of exogenous evil, leading to poor circulation of qi and blood and malnutrition of the bones, muscles and joints. The TCM method of tonifying the kidney and strengthening GV to regulate circulation of qi and blood and check the arthralgia pain should be adopted, with the Kidney-Tonifying and GV Strengthening Decoction (益肾强督汤) prescribed.     

IMPROVING P-gp EXPRESSION IN HUMAN MONONUCLEAR CELLS IN VITRO TRANSFECTED BY MULTIDRUG RESISTANCE-1 mRNA

CHEMOTHERAPY playsa greatrolein the treat- ment of malignanttumors,especiallyingynecolo- gicalones.But inanticancerchemotherapy,leuko-cytopeniaisfrequentlytheprimarydose-limitingsideeffect factor.Moreover,cancersarefrequentlychemoresistantbe-causeof overexpressionof P-glycoprotein(P-gp), which isencodedby multidrugresistancegene (MDR1 ) and detectableinup to50% ofhuman cancersand renderscellsresistancetoanticancerdrugs.The safetyand potentialtherapeuticbenefitof mdr1 gene transferredto h…