非经典型21-羟化酶缺陷症与多囊卵巢综合征的鉴别诊断分析

目的探索非经典型21-羟化酶缺陷症(NC21-OHD)和多囊卵巢综合征(PCOS)的鉴别诊断方法。方法对比31例NC21-OHD女性患者和29例PCOS患者的临床资料。结果NC21-OHD组肾上腺皮质增生发生率显著高于PCOS组(P<0.05),卵巢多囊样变(PCO)发生率和身高低于PCOS组(P<0.05)。NC21-OHD组促肾上腺皮质激素(ACTH)、17-羟孕酮(17-OHP)、雄烯二酮(AD)、总睾酮、孕酮水平显著高于PCOS组(P<0.05);PCOS组黄体生成素(LH)、LH/卵泡刺激素(FSH)水平显著高于NC21-OHD组(P<0.05),最佳的2个鉴别指标为17-OHP和孕酮,最佳切点值分别为3.34 ng/ml(灵敏度89.7%,特异度93.1%)和0.64 ng/ml(灵敏度90.0%,特异度75.9%)。对比2组1日法中剂量地塞米松抑制试验(DST),NC21-OHD组17-OHP、孕酮、AD和总睾酮抑制率显著高于PCOS组(P<0.01),其抑制率最佳切点值分别为73.5%(灵敏度95.2%,特异度100.0%)、55.5%(灵敏度100.0%,特异度88.9%)、61.4%(灵敏度84.2%,特异度100.0%)和68.3%(灵敏度65.0%,特异度100.0%)。结论2组患者临床表现相似,最佳鉴别指标为17-OHP。1日法中剂量DST在2种疾病的鉴别中有重要作用。基因检测为鉴别2种疾病的金标准。     

21-羟化酶缺陷症伴肾上腺腺瘤及睾丸肾上腺残余肿瘤一例

目的 分析1例21-羟化酶缺陷症伴肾上腺腺瘤及睾丸肾上腺残余肿瘤患者的临床特点及分子遗传学诊断.方法 全面收集1例单纯男性化型21-羟化酶缺陷症患者的临床资料,对患者睾丸肿瘤组织进行病理活检,并采用PCR产物直接测序方法明确CYP21基因突变.结果 患者为中年男性,因"右侧肾上腺皮质腺瘤术后,左侧肾上腺肿块"入院;激素测定示:ACTH、孕酮、17-羟孕酮、雄烯二酮、睾酮明显高于正常值,CT示右侧肾上腺切除术后、左侧肾上腺弥漫性增生伴多发结节,精液常规未见精子.睾丸活检示:纤维组织增生伴玻璃样变和局灶钙化.基因测序检测到患者CYP21基因第2号内含子纯合突变.结论 未经诊治的21-羟化酶缺陷症患者可能伴发肾上腺腺瘤和(或)睾丸肾上腺残余肿瘤.     

21-羟化酶缺陷症伴肾上腺腺瘤及睾丸肾上腺残余肿瘤一例

目的 分析1例21-羟化酶缺陷症伴肾上腺腺瘤及睾丸肾上腺残余肿瘤患者的临床特点及分子遗传学诊断.方法 全面收集1例单纯男性化型21-羟化酶缺陷症患者的临床资料,对患者睾丸肿瘤组织进行病理活检,并采用PCR产物直接测序方法明确CYP21基因突变.结果 患者为中年男性,因"右侧肾上腺皮质腺瘤术后,左侧肾上腺肿块"入院;激素测定示:ACTH、孕酮、17-羟孕酮、雄烯二酮、睾酮明显高于正常值,CT示右侧肾上腺切除术后、左侧肾上腺弥漫性增生伴多发结节,精液常规未见精子.睾丸活检示:纤维组织增生伴玻璃样变和局灶钙化.基因测序检测到患者CYP21基因第2号内含子纯合突变.结论 未经诊治的21-羟化酶缺陷症患者可能伴发肾上腺腺瘤和(或)睾丸肾上腺残余肿瘤.     

CYP11B1基因突变致11β-羟化酶缺陷症五例随访研究

目的探索11β-羟化酶缺陷症(11β-hydroxylase deficiency, 11β-OHD)患者的临床和遗传学特点, 以提高对该病的认识。方法回顾性分析2016年至2021年在河南省儿童医院确诊的5例11β-OHD患儿的临床表现、激素水平、影像学检查、基因突变特点及随访结果。结果 5例患儿中3例男性, 2例女性, 诊断时年龄1岁5个月～7岁(平均3岁9个月), 骨龄3岁6个月～16岁(平均10岁3个月), 均无阳性家族史, 被误诊为21-羟化酶缺陷症(21-hydroxylase deficiency, 21-OHD)2例, 且长期合用盐皮质激素治疗。3例合并高血压, 1例睾丸肾上腺残余瘤。5例肾上腺CT均提示肾上腺增粗, 5例患儿ACTH、17-羟孕酮、睾酮、雄烯二酮不同程度地升高, 低钾血症1例。基因分析结果为1例纯合突变, 4例复合杂合突变, 携带错义突变的4例, 2例患者携带缺失, 1例患者携带有CYP11B2 exon1-6/CYP11B1 exon7-9形成的嵌合基因。其中CYP11B1 c.1385T>C(p.L462P)、c.1354G>A(p.G...     

21-羟化酶缺陷症对男性生育力的影响

先天性肾上腺皮质增生症(congenital adrenal hyperplasia, CAH)是由于肾上腺皮质类固醇激素合成途径中特定酶缺乏, 引起皮质类固醇激素合成障碍的一组常染色体隐性遗传病。21-羟化酶缺陷(21-hydroxylase deficiency, 21-OHD)是CAH最常见的类型, 该疾病可导致患者的生育力受损。目前的研究多集中于女性CAH患者的生育力问题, 男性21-OHD患者生育力受损最常见的原因包括睾丸肾上腺残余瘤(testicular adrenal rest tumor, TART)、低促性腺激素分泌及糖皮质激素治疗不当等。本文对男性21-OHD患者生育力受损的原因及其治疗进行了综述, 旨在为改善男性21-OHD患者生育力提供指导。     

21-羟化酶缺陷症伴肾上腺腺瘤及睾丸肾上腺残余肿瘤一例

目的 分析1例21-羟化酶缺陷症伴肾上腺腺瘤及睾丸肾上腺残余肿瘤患者的临床特点及分子遗传学诊断.方法 全面收集1例单纯男性化型21-羟化酶缺陷症患者的临床资料,对患者睾丸肿瘤组织进行病理活检,并采用PCR产物直接测序方法明确CYP21基因突变.结果 患者为中年男性,因"右侧肾上腺皮质腺瘤术后,左侧肾上腺肿块"入院;激素测定示:ACTH、孕酮、17-羟孕酮、雄烯二酮、睾酮明显高于正常值,CT示右侧肾上腺切除术后、左侧肾上腺弥漫性增生伴多发结节,精液常规未见精子.睾丸活检示:纤维组织增生伴玻璃样变和局灶钙化.基因测序检测到患者CYP21基因第2号内含子纯合突变.结论 未经诊治的21-羟化酶缺陷症患者可能伴发肾上腺腺瘤和(或)睾丸肾上腺残余肿瘤.

Abstract：

Objective To investigate the clinical and genetic characteristics in a male patient with 21hydroxylase deficiency combined with adrenal and testicular tumors.Methods Clinical features and laboratory data were collected from the patient.Testicular biopsy was performed.The CYP21 gene was sequenced for mutations.Results The patient presented left adrenal and testicular enlargements.The laboratory examinations showed that plasma ACTH,androstenedione,testosterone,progesterone,and 17-hydroxyprogesterone were markedly elevated.CT scan revealed that the right adrenal gland being resected and the left adrenal with nodular enlargement.Furthermore,testicular biopsy showed a prominent peritubular fibrosis with increased number of peritubular fibroblasts,tubular hyalinisation,and calcification.Sequencing analysis showed a A>G homozygous mutation at intron 2.Conclusion Patients with untreated 21-hydroxylage deficiency may.have adrenal adenomas and(or)testicular adrenal rest tumor simultaneously.     

在育龄期不孕的高雄激素血症女性中筛查先天性肾上腺皮质增生症

目的致不孕的原因复杂多样,在不孕原因的筛查中,先天性肾上腺皮质增生症(CAH)常被忽视。本研究在育龄期不孕的高雄激素血症女性中筛查CAH,并探讨拟妊娠女性CAH的诊治。方法纳入2016年12月至2019年4月因"不孕"就诊于南京医科大学第一附属医院生殖医学中心后转诊至内分泌科的育龄期高雄激素血症女性20例。完善血激素水平、糖脂代谢指标的检测,并行ACTH兴奋试验、子宫及双侧卵巢B超、肾上腺计算机断层扫描(CT)等检查,必要时行基因测序。结果20例不孕的高雄激素血症女性中CAH 7例(35.0%),其中基因测序确诊21-羟化酶缺陷症(21-OHD)6例、多囊卵巢综合征(PCOS)10例、特发性高雄激素血症(IHA)3例。性激素结果显示,CAH组睾酮水平显著高于PCOS组、IHA组[(4.4±2.0对2.9±0.4,2.8±0.8)nmol/L,P<0.05];ACTH兴奋试验结果显示,CAH组基础17-羟孕酮(17-OHP)显著高于PCOS组[(101.0±100.8对1.4±0.8)ng/ml,P<0.05],而与IHA组相比差异无统计学意义[(101.0±100.8对3.0±1.8)ng/ml,P>0.05];CAH组60 min 17-OHP显著高于PCOS组、IHA组[(200.1±80.8对3.1±1.2,3.4±0.2)ng/ml,P<0.05]。给予CAH患者糖皮质激素治疗后,4例成功妊娠并分娩。随访已分娩患者的后代,均未发现CAH临床症状及外生殖器畸形。结论ACTH兴奋试验在CAH特别是21-OHD的鉴别诊断中具有重要意义,基因检测有助于进一步明确CAH的突变类型。糖皮质激素治疗可提高CAH患者的妊娠率,也有助于降低母体高雄激素状态、避免女性后代出现男性化表现。     

临沂地区先天性肾上腺皮质增生症新生儿的筛查与治疗

目的 总结临沂地区先天性肾上腺皮质增生症(CAH)新生儿筛查的方法与治疗经验.方法 对2009年9月～2012年5月临沂地区出生的满72 h活产新生儿采集足跟末梢血,测定滤纸片血斑中17-羟孕酮(17-OHP),对可疑病例召回复查17-OHP,并进行确诊分型.对确诊患儿行糖皮质激素治疗.结果 共筛查出CAH患儿14例.其中2例放弃治疗,另12例坚持口服醋酸氢化可的松治疗.随访12例患儿生长发育良好.结论 新生儿筛查可早期发现CAH.糖皮质激素维持治疗CAH时药量要个体化,需定期复查.     

青春前期和青春期女性男性化病人晚发型肾上腺增生的检测

本文研究血17-羟孕酮(17-OHP)、皮质醇(F)、硫酸去氢表雄酮(DHEA-S)及睾丸酮(T)在诊断21-羟化酶缺乏所致的晚发型先天性肾上腺增生病例方面的意义。研究对象是68例3～18岁处于儿童期、青春期及青春后期的女性男性化病人。其出生时外生殖器均未见异常,但在随访研究中发现这些病人至少具备以下4种体征之一:即阴蒂增大、阴毛早生、渐进性多毛及重度痤疮。作者首先检测这些病人的基础血清17-OHP(早上7时～9时),已行经者在卵泡中期第5～10天进行。结果 68例中21例6～18岁病人血17-OHP 值>50nmol/L(正常1～10nmol/L)。这21例病人再做促皮质素(ACTH)刺激试验,以ACTH0.25mg 静注(n=15)或合成皮质素(tetracosactide)1.0mg 肌注(n=6),分别于试验前及用 ACTH 后1h 或6h 取血查17-OHP、F、T 及DHEA-S。同时选出8名18～24岁正常女性,13例24～36岁的21-羟化酶缺乏病人家属(杂合子)和11例1～14岁典型的21-羟化酶缺乏病人作为对照.结果发现 ACTH 刺激后21例女性男性化病人     

糖皮质激素替代治疗对21-羟化酶缺陷症患者糖脂代谢的影响

目的 单纯男性化型和非经典型21-羟化酶缺陷症(21-OHD)患者常常合并糖脂代谢异常,本文研究接受糖皮质激素替代治疗的21-OHD患者的糖脂代谢的变化.方法 收集2004年至2010年期间接受糖皮质激素治疗的21-OHD患者32例,同时收集到未接受糖皮质激素治疗的新诊断的21-OHD患者31例,均经21-羟化酶(CYP21)基因测序突变分析证实为CYP21 A2基因突变.检测人体测量学指标和空腹血糖、血脂、胰岛素、性激素水平,以及口服葡萄糖耐量试验(OGTT)和胰岛素释放试验.结果 糖皮质激素治疗组睾酮[(0.61±0.12对4.10±0.66)ng/ml,P＜0.01]、17-羟孕酮[17-OHP,(14.83±3.48对48.52±4.72) ng/ml,P＜0.01]、硫酸脱氢表雄酮[DHEAS,(55.7±23.6对405.2±65.7)μg/dl,P＜0.01]、促肾上腺皮质激素[ ACTH,(105.8±44.7对617.4± 163.3)pg/ml,P＜0.01]水平明显下降,而体重指数[(23.2±0.9对21.1±0.5)kg/m2,P＜0.05]、收缩压[(120.5±1.3对115.5±1.8)mm Hg,P＜0.05,1mm Hg=0.133 kPa]和甘油三酯[(1.8±0.2对1.1±0.1)mmol/L,P＜0.05]却明显增高,并且糖皮质治疗组的稳态模型评估的胰岛素抵抗指数(HOMA-IR)也明显高于未治疗组[(2.07±0.27对1.16±0.12),P＜0.01].多因素回归分析表明体重指数与HOMA-IR的相关性最强.结论 糖皮质激素治疗增加21-OHD患者体重指数、血清甘油三酯水平、收缩压和降低胰岛素敏感性.其中体重指数增加是导致胰岛素抵抗的主要原因,因此21-OHD患者的糖皮质激素治疗需注意代谢紊乱问题.     

妊娠时间与肺结核复发的相关性研究及诊治对策

目的 分析肺结核史患者妊娠时间和肺结核复发间相关性.方法 选取我院收治的有肺结核史的妊娠妇女576例作为研究对象,对其妊娠前肺结核治疗、治愈后妊娠时间、妊娠后复发肺结核等进行分析,总结有肺结核史育龄女性的妊娠时间和肺结核复发之间的关系.结果 肺结核治愈后不同时间段妊娠者的结核复发率比较,差异具有显著性（P＜0.05）,停药后间隔时间越久妊娠,肺结核复发的几率越小.结论 加强孕期痰菌检查,及早发现复发肺结核,提高母婴安全.     

我国骨关节结核诊治的回顾与展望

骨关节结核是危害人们健康的严重感染性疾病,近95％由他处结核病继发而来.罹患骨关节结核疾病后几乎均将致残,严重影响人们的健康、工作和生活.建国以来在党和国家的关心和支持下,骨关节结核的诊治水平取得了长足进步.时至今日,由于多种原因,学科发展和被重视程度受到一定的制约,同整个医疗行业的发展不相适应.回顾过去,展望未来,我们需要重新审视骨关节结核的诊治方法,努力推进骨关节结核诊疗技术的科学发展.     

Effect of phosphorylation of MAPK and Stat3 and expression of c-fos and c-jun proteins on hepatocarcinogenesis and their clinical significance

AIM To study the effect of phosphorylation ofMAPK and Stat3 and the expression of c-fos andc-jun proteins on hepatocellular carcinogenesisand their clinical significance.METHODS SP immunohistochemistry was usedto detect the expression of p42/44~(MAPK), p-Stat3,c-fos and c-jun proteins in 55 hepatocellularcarcinomas (HCC) and their surrounding livertissues.RESULTS The positive rates and expressionlevels of p42/44~(MAPK), p-Stat3, c-fos and c-junproteins in HCCs were significantly higher thanthose in pericarcinomatous liver tissues (PCLT).A positive correlation was observed between theexpression of p42/44~(MAPK) and c-fos proteins, andbetween p-Stat3 and c-jun, but there was nosignificant correlation between P42/44~(MAPK) and p-Stat3 in HCCs and their surrounding livertissues.CONCLUSION The abnormalities of Ras/Raf/MAPK and JAKs/ Stat3 cascade reaction maycontribute to malignant transformation ofhepatocytes. Hepatocytes which are positive forp42/ 44~(MAPK), c-fos or c-jun proteins may bepotential malignant pre-cancerous cells.Activation of MAPK and Stat3 proteins may be anearly event in hepatocellular carcinogenesis.     

Overweight and Obesity and Progression of ADPKD

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Replication and Inhibitors of Enteroviruses and Parechoviruses

The Enterovirus (EV) and Parechovirus genera of the picornavirus family include many important human pathogens, including poliovirus, rhinovirus, EV-A71, EV-D68, and human parechoviruses (HPeV). They cause a wide variety of diseases, ranging from a simple common cold to life-threatening diseases such as encephalitis and myocarditis. At the moment, no antiviral therapy is available against these viruses and it is not feasible to develop vaccines against all EVs and HPeVs due to the great number of serotypes. Therefore, a lot of effort is being invested in the development of antiviral drugs. Both viral proteins and host proteins essential for virus replication can be used as targets for virus inhibitors. As such, a good understanding of the complex process of virus replication is pivotal in the design of antiviral strategies goes hand in hand with a good understanding of the complex process of virus replication. In this review, we will give an overview of the current state of knowledge of EV and HPeV replication and how this can be inhibited by small-molecule inhibitors.     

Effect of phosphorylation of MAPK and Stat3 and expression of c-fas and c-jun proteins on hepatocarcinogenesis and their clinical significance

AIM To study the effect of phosphorylation ofMAPK and Stat3 and the expression of c-fos andc-jun proteins on hepatocellular carcinogenesisand their clinical significance.METHODS SP immunohistochemistry was usedto detect the expression of p42/44MAPK, p-Stat3,c-fos and c-jun proteins in 55 hepatocellularcarcinomas (HCC) and their surrounding livertissues.RESULTS The positive rates and expressionlevels of p42/44MAPK, p-Stat3, c-fos and c-junproteins in HCCs were significantly higher thanthose in pericarcinomatous liver tissues (PCLT).A positive correlation was observed between theexpression of p42/44MAPK and c-fos proteins, andbetween p-Stat3 and c-jun, but there was nosignificant correlation between p42/44MAPK and p-Stat3 in HCCs and their surrounding livertissues.CONCLUSION The abnormalities of Ras/Rat/MAPK and JAKs/ Stat3 cascade reaction maycontribute to malignant transformation ofhepatocytes. Hepatocytes which are positive forp42/ 44MAPK, c-fos or c-jun proteins may bepotential malignant pre-cancerous cells.Activation of MAPK and Stat3 proteins may be anearly event in hepatocellular carcinogenesis.     

心电图、心电向量图与冠状动脉造影结果对比分析

目的:通过分析心电图(Electrocardiogram,ECG)和心电向量图(Vectorcardiogram,VCG)的改变与冠脉造影（CAG）结果进行对比,探讨ECG、VCG在冠状动脉病变中的诊断价值。方法: 选择2008年1月~2009年12月临床拟诊断为冠心病患者108例,行常规ECG、VCG检查,并于1周内进行CAG,对检查结果依据各自的诊断标准进行判定,以CAG为标准诊断法,利用四格表法,计算相关评价真实性的指标并进行比较。结果: ①VCG检测的灵敏度、特异度、准确度显著高于ECG(P<0.05,P<0．01)。②ECG、VCG阳性率与冠脉病变支数组间比较:在单支病变、双支病变中,VCG阳性率明显高于ECG(P<0.05),左主干或三支病变无统计学意义;组内比较:ECG组左主干或三支病变组较单支病变、双支病变阳性率高(P<0.05,P<0.01);VCG组左主干或三支病变组较单支病变阳性率高(P<0.05);与双支病变阳性率比较无统计学意义;③ECG、VCG阳性率与冠脉病变程度组间比较:冠脉病变狭窄50%～69%的VCG阳性率明显高于ECG (P<0.05),其他两组阳性率比较无统计学意义;组内比较:ECG组冠脉病变狭窄≥90%较50%～69%、70%～89%的阳性率高(P<0.05,P<0.01); VCG组狭窄≥90%较50%～69%阳性率高（P<0.01),其他无统计学意义。结论: VCG对冠心病检测价值显著高于ECG。     

Detection and characterization of the product of hydroethidine and intracellular superoxide by HPLC and limitations of fluorescence

Here we report the structural characterization of the product formed from the reaction between hydroethidine (HE) and superoxide (O(2)(.-)). By using mass spectral and NMR techniques, the chemical structure of this product was determined as 2-hydroxyethidium (2-OH-E(+)). By using an authentic standard, we developed an HPLC approach to detect and quantitate the reaction product of HE and O(2)(.-) formed in bovine aortic endothelial cells after treatment with menadione or antimycin A to induce intracellular reactive oxygen species. Concomitantly, we used a spin trap, 5-tert-butoxycarbonyl-5-methyl-1-pyrroline N-oxide (BMPO), to detect and identify the structure of reactive oxygen species formed. BMPO trapped the O(2)(.-) that formed extracellularly and was detected as the BMPO-OH adduct during use of the EPR technique. BMPO, being cell-permeable, inhibited the intracellular formation of 2-OH-E(+). However, the intracellular BMPO spin adduct was not detected. The definitive characterization of the reaction product of O(2)(.-) with HE described here forms the basis of an unambiguous assay for intracellular detection and quantitation of O(2)(.-). Analysis of the fluorescence characteristics of ethidium (E(+)) and 2-OH-E(+) strongly suggests that the currently available fluorescence methodology is not suitable for quantitating intracellular O(2)(.-). We conclude that the HPLC/fluorescence assay using HE as a probe is more suitable [corrected] for detecting intracellular O(2)(.-).     

Effects of sex and time of day on metabolism and excretion of corticosterone in urine and feces of mice

Non-invasive techniques to monitor stress hormones in small animals like mice offer several advantages and are highly demanded in laboratory as well as in field research. Since knowledge about the species-specific metabolism and excretion of glucocorticoids is essential to develop such a technique, we conducted radiometabolism studies in mice (Mus musculus f. domesticus, strain C57BL/6J). Each mouse was injected intraperitoneally with 740 kBq of 3H-labelled corticosterone and all voided urine and fecal samples were collected for five days. In a first experiment 16 animals (eight of each sex) received the injection at 9 a.m., while eight mice (four of each sex) were injected at 9 p.m. in a second experiment. In both experiments radioactive metabolites were recovered predominantly in the feces, although males excreted significantly higher proportions via the feces (about 73%) than females (about 53%). Peak radioactivity in the urine was detected within about 2h after injection, while in the feces peak concentrations were observed later (depending on the time of injection: about 10h postinjection in experiment 1 and about 4h postinjection in experiment 2, thus proving an effect of the time of day). The number and relative abundance of fecal [3H]corticosterone metabolites was determined by high performance liquid chromatography (HPLC). The HPLC separations revealed that corticosterone was extensively metabolized mainly to more polar substances. Regarding the types of metabolites formed, significant differences were found between males and females, but not between the experiments. Additionally, the immunoreactivity of these metabolites was assessed by screening the HPLC fractions with four enzyme immunoassays (EIA). However, only a newly established EIA for 5alpha-pregnane-3beta,11beta,21-triol-20-one (measuring corticosterone metabolites with a 5alpha-3beta,11beta-diol structure) detected several peaks of radioactive metabolites with high intensity in both sexes, while the other EIAs showed only minor immunoreactivity. Thus, our study for the first time provides substantial information about metabolism and excretion of corticosterone in urine and feces of mice and is the first demonstrating a significant impact of the animals' sex and the time of day. Based on these data it should be possible to monitor adrenocortical activity non-invasively in this species by measuring fecal corticosterone metabolites with the newly developed EIA. Since mice are extensively used in research world-wide, this could open new perspectives in various fields from ecology to behavioral endocrinology.     

大鼠骨髓间充质干细胞的分离培养和外源基因的导入

目的探讨绿色荧光蛋白基因转染骨髓间质干细胞的可行性。方法采用F icoll-PaqueTMP lus淋巴细胞分离液,根据细胞密度梯度原理,分离大鼠骨髓间充质干细胞(rM SC s)并进行体外原代培养和传代扩增,倒置相差显微镜观察细胞生长情况,免疫细胞化学法对其初步鉴定。流式细胞仪分析转染效率。结果原代和传代培养的细胞呈现梭形外观,具有较强的生长增殖能力;细胞均一表达CD44、CD54、CD106、CD29抗原。电穿孔法转染rM SC s转染率为32.8%±3%。结论采用比重为1.077 g/L的F icoll-PaqueTMP lus能分离获得大鼠骨髓间充质干细胞,经原代培养和传代培养能够迅速扩增。电穿孔法具有较高的介导外源基因表达于rM SC s的效率。