Long-Evans大鼠骨髓间充质干细胞分离培养及生物学特性研究

目的对Long-Evans大鼠骨髓间充质干细胞（bone mesenchymal stem cells，BMSCs）进行分离培养，并检测其生物学特性。方法采用0．85％NH4Cl分离培养Long-Evans大鼠股骨来源BMSCs，检测生长曲线和生长周期，并进行细胞表面抗原和成骨能力鉴定。结果BMSCs体外培养生长状况良好，具有活跃的增殖能力。第5代细胞生长速度较第3代略减慢。细胞周期显示93．79％细胞处于G0～G1期。表面抗原检测绝大多数细胞阳性表达CD29和CD90，几乎不表达CD45。在体外能够向成骨细胞分化。结论Long-Evans大鼠股骨来源骨髓间充质干细胞经0．85％NH4Cl分离培养后，纯度高，具有良好生物学特性。     

人胎盘来源间质干细胞移植治疗改善心肌梗死大鼠的心功能

目的 从人胎盘中分离培养间充质干细胞,评价其生物学特性并观察其改善大鼠心梗模型心功能的能力.方法 用酶消化法自人胎盘组织中分离培养,并以流式细胞术对其进行鉴定.利用Percoll密度梯度离心方法从骨髓中分选出人骨髓来源间充质干细胞.将两种来源细胞进行大鼠心梗模型移植,4周后超声心动图检测大鼠心脏功能.结果 人胎盘组织中可分离培养出间充质干细胞,并且胎盘来源间充质干细胞与骨髓来源间充质干细胞具有相似的改善心梗后心功能的能力.结论 胎盘来源间充质干细胞是心肌组织工程良好前景的种子细胞来源之一.     

真皮多能干细胞在创伤愈合中作用的实验研究

目的研究真皮多能干细胞的部分基本生物学特性，观察其在创伤愈合中的意义。方法采用前期建立的技术分离、纯化并扩增真皮多能干细胞；利用流式细胞技术观察真皮多能干细胞周期变化；四唑盐比色试验（MTT法）观察其辐射敏感性。收集伤后1，2，3和4d伤11液，观察其对真皮多能干细胞的反应性。结果分离、纯化的真皮多能干细胞形态较为均一，增殖能力强；培养的细胞凋亡数量少，多处于静止期，对辐射极为敏感；这种细胞增殖对伤口液具有良好的反应性，尤其伤后早期伤口液作用更为明显。结论发育成熟的个体中仍存在较为幼稚的真皮多能干细胞，它们在创伤愈合过程中具有重要意义，特别是在创伤修复启动中的作用值得进-步深入研究。     

大鼠胚胎后肾间充质干细胞体外诱导分化的实验研究

目的 研究大鼠胚胎后肾间充质干细胞(MMSCs)体外诱导分化的生物学特性.方法 原代分离培养后肾间充质干细胞,在体外特定诱导条件下观察细胞向成骨细胞、脂肪细胞及肾小管上皮细胞的分化及其形态演变,采用细胞免疫荧光检测细胞表面特定蛋白的表达变化.结果 大鼠后肾间充质干细胞在特定诱导条件下可向成骨细胞、脂肪细胞及上皮细胞分化,免疫荧光结果显示分化后的上皮细胞E-cadherin蛋白表达明显增强,而vimentin、fibronectin的表达则明显降低甚至无表达.结论 大鼠胚胎后肾间充质干细胞在特定条件下有定向分化的能力,具有潜在分化为肾实质细胞的能力.     

源于人躯干皮肤真皮的成纤维样细胞的间充质干细胞分化潜能

目的: 研究从人皮肤真皮组织中分离培养的成纤维样细胞向中胚层细胞分化的潜能,初步探讨其替代自体骨髓间充质干细胞(BMSCs)用于组织损伤和缺损修复的可行性。方法: 将一定大小的成人腹部全层皮肤组织分别用分散酶和Ⅰ型胶原酶消化,分离获得真皮来源总细胞。单层培养扩增的细胞在含有一定浓度N2、B27、碱性成纤维细胞生长因子(bFGF)和表皮细胞生长因子(EGF)的无血清培养液中进行悬浮培养,并收集培养液中悬浮存在的球状细胞聚集体(SDDSs),用含胎牛血清的培养液进一步单层扩增细胞。以免疫细胞荧光法分析细胞和鉴定细胞的分化特性。结果: 真皮中分离的一些单个细胞在无血清培养液中分裂增殖形成SDDSs;在含血清的单层培养条件下,从SDDSs分离培养的细胞增殖活跃,细胞表达间充质干细胞标志物CD90、CD105和波形蛋白;分别向骨细胞、软骨细胞以及脂肪细胞诱导分化后,呈现类似于BMSCs分化特点,分化的细胞呈茜素红、番红O和油红O特殊染色阳性反应,但真皮细胞分化形成的软骨细胞番红O染色弱于骨髓干细胞来源的软骨细胞。结论: 结合无血清培养和有血清培养法,可从人真皮组织中分离培养具有向软骨细胞、骨细胞和脂肪细胞分化潜能的细胞,此细胞将有望替代BMSCs用于临床组织损伤修复的再生治疗。     

脐带间充质干细胞研究进展

间充质干细胞(mesenchymal stem cells,MSCs)是来源于发育早期中胚层的具有高度自我更新能力和多向分化潜能的多能干细胞,广泛存在于全身多种组织中,可在体外培养扩增,并能在特定条件控制下分化为神经细胞、成骨细胞、肌肉细胞、脂肪细胞等[1],在细胞替代治疗及组织工程方面有极大的应用价值.目前,MSCs主要来源于骨髓,但由于骨髓源性MSCs存在高度病毒污染的可能,且随着年龄增长其细胞数量和扩增、分化能力出现明显下降趋势,故寻找一种能替代骨髓并可弥补其缺陷的间充质干细胞来源,已越来越受到各国学者的关注.脐带间充质干细胞作为一种多潜能干细胞,成功避开了胚胎干细胞来源缺乏、异体排斥、道德伦理等诸多限制,成为干细胞领域的研究热点.本文就近年来国内外在脐带间充质干细胞方面的相关研究进行总结和分析,对脐带间充质干细胞的分离培养、生物学特性以及分化能力等问题作简要综述.     

SD大鼠皮质骨来源间充质干细胞的培养与鉴定

【目的】研究大鼠皮质骨来源间充质干细胞(MSCs)的分离培养及鉴定的方法。【方法】取SPF级体质量60~80 g的SD大鼠3只,运用骨髓贴壁法及胶原酶消化皮质骨法培养间充质干细胞,进行形态学观察、体外增殖能力考察、细胞周期分析、细胞表面抗原免疫荧光鉴定,并采用茜素红染色和油红O染色鉴定所培养细胞的成骨与成脂分化潜能。【结果】胶原酶消化皮质骨法及骨髓贴壁法均能有效分离纯化大鼠MSCs,经形态学、细胞表面抗原免疫荧光鉴定、成骨及成脂分化能力检测证实为间充质干细胞。【结论】自骨髓及皮质骨均能实现间充质干细胞的分离纯化,但皮质骨间充质干细胞来源广泛,原代不受血细胞干扰,是骨髓来源间充质干细胞的很好补充。     

人骨髓间充质干细胞体外分离培养的实验研究

目的探索体外分离培养人骨髓间充质干细胞的方法并观察基本生长特性，为今后研究其分化提供实验依据。方法：采用Ficoll-Paque淋巴细胞分离液分离人骨髓间充质干细胞，体外培养扩增，在倒置相差显微镜下观察细胞形态变化，细胞计数法绘制生长曲线，流式细胞仪检测细胞周期。结果：密度梯度离心法可获得较高纯度的骨髓间充质干细胞，细胞形态呈圆形、三角形或棒杆状，48h后细胞开始贴壁，4-5d可见有集落形成，2w左右可达到基本融合。生长曲线示骨髓间充质干细胞增殖活跃，流式细胞仪检测显示约有86％的细胞处于G0、G1期。结论：人骨髓间充质干细胞在体外培养条件下生长性状稳定，增殖能力较强，可作为肝组织工程中理想的种子细胞来源。     

人脐带间充质干细胞体外分离、培养、扩增方法及生物学特性研究

目的 建立从足月脐带分离间充质干细胞和体外传代培养技术,并对其生物学特性进行研究.方法 采用双酶法分离脐带间充质干细胞,并通过传代进行纯化和扩增培养,绘制生长曲线;用流式细胞仪检测脐带表面抗原及细胞周期;采用软琼脂克隆实验以观察脐带致瘤性.结果 成功建立了脐带间充质干细胞分离及培养扩增的方法;流式细胞仪检测结果显示,贴壁细胞均表达CD105、CD44、CD13和CD29,不表达造血细胞表型CD34、CD45和内皮细胞表型CD31,不表达CD106、CD166和HLA-DR;细胞倍增时间为30h,细胞周期分析表明,G0～G1期和S G2 M期所占比例分别为78.84%和11.16%,脐带间充质干细胞在软琼脂中无克隆形成.结论 双酶法是一种较好的分离和培养方法间充质干细胞的方法,培养的细胞具有间充质干细胞的基本特性,无致瘤性,为建立间充质干细胞库和临床应用提供了理论依据.     

人骨髓干细胞分离及其向神经细胞诱导分化的实验研究

目的研究骨髓间充质细胞向神经样细胞诱导分化的能力,探讨利用其治疗神经损伤疾病的可行性。方法采用直接分离培养法从人骨髓中分离培养骨髓间充质干细胞,流式细胞术对其细胞特性进行鉴定,化学诱导法诱导其向神经样细胞分化,免疫组化技术验证诱导细胞特性。结果成功获得骨髓间充质干细胞,免疫表型鉴定结果为CD73、CD90、CD105表达阳性,CD14、CD34、CD45表达阴性;免疫组化染色显示诱导分化的细胞表达神经前体细胞标志物Nestin、GFAP和成熟神经元标志物NSE等。结论骨髓间充质细胞在特定诱导因子作用下能向神经细胞表型转化,并能稳定表达神经细胞因子,可以作为神经损伤疾病组织工程的种子细胞来源。     

Acupuncture Treatment of Vomiting

CASE HISTORY A female patient, 46 years old, head of the foreign affairs department of a certain university in Beijing, paid her first visit on October 9, 2006, with the chief complaint of vomiting for one month. She got vomiting after meals in early September. Before that, she had discomfortable sensation in the stomach due to angry with others, but she didn't pay much attention. Later, it developed into vomiting after eating. After the vomiting, the discomfort would be relieved, but with slight hypodynamia. She was once diagnosed as having 'neurogenic vomiting'. Having taken some western and Chinese drugs, the above symptoms were a little bit improved, but she would have nausea upon eating and with regurgitation. Because of the fear for vomiting, she did not dare to have food intake, with body weight reduction of 6 kilos in one month.     

Qiu Baoguo''''s Experience in Treating Consumptive Syndromes after Radio-Chemotherapies

Radiotherapy and chemotherapy are the important modern medical therapies for malignant tumors,yet they can also bring about serious local and systemic toxic side reactions so to decrease the patient;'s life quality,manifested by a series of consumptive symptoms.Having engaged in the combined work of Chinese and western medicine for nearly 50 years,the research fellow Qiu Baoguo in Henan Provincial Academy of TCM has developed his unique views on the TCM study of consumptive syndromes.The author of this essay had once the fortune tO follow Dr.Qiu in clinic,and specially would like to introduce in the following Dr.Qiu's experience in treating consumptive syndromes after radio-chemotherapies for patients with malignant tumor.     

Insomnia Due to Deficiency of Both the Heart and Spleen Treated by Acupuncture-Moxibustion and Chinese Tuina

OBJECTIVE: To observe therapeutic effects of the comprehensive therapy of acupuncture-moxibustion and Chinese Tuina for treatment of insomnia due to deficiency of both the heart and spleen. METHODS: 92 cases were divided randomly into the treatment group (treated by acupuncture-moxibustion and Chinese Tuina) and the control group (treated by acupuncture-moxibustion). RESULTS: The therapeutic effect of the treatment group was obviously superior to that of the control group (the CHI2 test showed P < 0.01). CONCLUSIONS: The comprehensive therapy of acupuncture-moxibustion and Chinese Tuina can give marked therapeutic effects for treatment of insomnia due to deficiency of both the heart and spleen.     

Analysis of CK-19,PDX-1,Nestin,Ngn3 in different donor islet purity in rats

Objective: To investigate if there are the CK-19, PDX-1, Nestin, Ngn3 positive cells in the donor islets of different purity in rats. Methods: Thirty male adult SD rats were randomly divided into 3 groups. Islets were isolated using digestion by ductal injection of collagenase. Group Ⅰ (n=10): Separating cell preparations were not purified, Group Ⅱ(n=10): Islet sediment was purified with 25% Ficoll400 ,Group Ⅲ (n=10): Islet sediment was purified with 25% and 11% Ficoll-400. The levels of protein of CK-19, PDX-1, Nestin and Ngn3 were detected by immunohistochemistry and the mRNA of CK-19, PDX-1, Nestin, Ngn3 was amplified by RT-PCR. Results: After two different purification methods applied, three islet preparations of different purities were obtained. The difference of islet purity was significant among various groups (P＜0.05). Compared with group Ⅱ and group Ⅲ,the protein and mRNA of CK-19, PDX-1, Nestin,Ngn3 were both higher in group Ⅰ; group Ⅲ was poorly expressed. Conclusions: The three different islet purity donor islet have different CK-19, PDX-1, Nestin, Ngn3 positive cells within them, indicating that there are some islet stem cells in the purified donor islet.     

A preliminary screening study on the associated proteins in human psoriasis vulgaris by serum proteomics technologies

Objective：To investigate the optimum screening conditions of associated proteins in human psoriasis vulgaris by serum proteomics technique, and to screen the different expression proteins related with psoriasis vulgaris. Methods：Serum samples of peripheral blood were collected from newly diagnosed psoriasis vulgaris patients in the clinic, and 20 matched healthy persons. Serum albumin IgG was removed by filtering with ProteoExtract Albumin/IgG. After comparative proteomics analysis the different protein spots were identified using 2-DE and MS. Results ：Electrophoresis figures with high resolution and reproducibility were obtained. Three different expression proteins were found only in the serum from psoriasis vulgaris patients, while nine other different proteins expressing from healthy volunteers. Conclusion：The protein expression was different in the serum between the psoriasis vulgaris patients and healthy volunteers. It was hoped that we could find the biomarkers related to psoriasis vulgaris by using proteomics.     

A CASE OF HUGE GASTRIC DISOPYROBEZOAR

PYTOBEZOARS are common bezoars in gastrontestinal tract, commonly seen in stomach and mall intestine,1but huge disopyrobezoars are     

Acupuncture Treatment of Chest Bi Syndrome

CASE HISTORY A male,a retired officer of 61 years old,paid his first visit on May 12,2006.The patient stated that 2 weeks before he suddenly got paroxysmal precordial choking pain,with irregular attacks.Each attack would last several seconds to several minutes.The attack was accompanied with heavy oppressed sensation in the precordial region,palpitation,lassitude,and in severe cases,sweating,which was once diagnosed by a hospital as'coronary heart disease'.Recalling the case history,the patient said that several days before he got angry with others because of some affairs in work,and he was not so used to the life pattern since he had just retired from his busy working post.At usual times,he was quick tempered and peevish.In recent days,he had poor appetite,and loose stool.     

Instructions to Contributors

The English edition of Chinese Journal of Integrative Medicine is edited and published by the Chinese Journal of Integrated Traditional and Western Medicine Press.Original scientific papers of advanced clinical and experimental medicine in the field of complementary/alternative medicine or integrative medicine are expected.