广西眼镜王蛇毒酸性磷脂酶A2的分离纯化和性质研究

目的广西眼镜王蛇毒酸性磷脂酶A2的分离纯化和性质研究.方法分离纯化采用SephadexG-75,CM-SepharoseCL-6B和DEAE-SephadexA-50柱层析法;通过电泳,磷脂酶A2活力测定,氨基酸组成测定,N端序列分析及药理实验进行性质研究.结果从广西眼镜王蛇毒中分离到一种酸性的磷脂酶A2(命名为APLA2-1),相对分子质量为14600u,等电点5.4,酶的比活力为108μmol/mg*min-1,N端序列为NLIQFGNMIQCTVPGF.它对实验用小白鼠有致死性(LD506.6mg/kg),具有肌毒性,心脏毒性,抗血小板聚集活性,能诱导水肿形成.结论APLA2-1生化和药理性质的研究,为阐明蛇毒PLA2结构和功能关系,及蛇伤中毒机制,打下了良好基础.     

广西眼镜蛇毒中Natrin蛋白的分离及纯化

目的:从广西眼镜蛇毒中分离出Natrin蛋白.方法:广西眼镜蛇毒经SephadexG75凝胶、CM Sepharose CL-6B离子交换层析及FPLC mono-S柱层析分离纯化出Natrin蛋白.结果:从广西眼镜蛇蛇毒中分离纯化得到的Natrin蛋白,经SDS-PAGE电泳测定其分子量为25 ku,质谱测定其分子量...     

自制CM-C对眼镜王蛇蛇毒的柱层析及其中五种酶的分布

眼镜王蛇(Ophiophagus hannah)广泛分布于我国北回归线以南各省区,我区以河池、柳州、百色、南宁和玉林等专区为多.Joubert用柱层析分离出眼镜王蛇蛇毒两种神经毒素,并测定其氨基酸序列.Mebs测定了眼镜王蛇原蛇毒某些酶的活性.1979年我院     

福建产眼镜王蛇毒神经毒素的分离及活性测定

目的 从眼镜王蛇蛇毒中分离神经毒素，测定其活性和毒性。方法 应用CM—Sephadex C-50离子交换色谱，阶段梯度洗脱分离粗毒；用Sephadex G-50凝胶过滤纯化组分；用大鼠体外膈神经-膈肌标本鉴定分离组分对神经-肌肉接头的作用性质；观察神经毒素对乙酰胆碱(Ach)引起蛙体外腹直肌收缩的量效曲线的影响；以Meier法测定神经毒索对小鼠的半数致死量(LD50)。结果 眼镜王蛇粗毒经阳离子交换色谱后获得A～N共14个蛋白峰，经鉴定E、F、G，H、I、K等6个蛋白峰具有阻断神经一肌肉接头传导的作用，被鉴定为神经毒素，约占粗毒的48．3％；通过凝胶过滤对E、G和K组分进行初步纯化；E、G和K组分可使Ach引起的蛙腹直肌收缩的量效曲线平行右移，它们与N2-胆碱受体(N2-AchR)的解离常数(KD)分别为：145．87，73．53和20．04ng／mL；E、G和K组分小鼠静脉注射的LD50分别为：0．884，0．749和1．58mg／kg。结论 眼镜王蛇粗毒经离子交换色谱获得6个神经毒索组分，经鉴定E、G和K组分为N2-AchR的竞争性拮抗剂。     

广西眼镜王蛇蛇毒磷脂酶A_2的分离纯化及电镜观察

广西眼镜王蛇(Ophiophagus hannah)蛇毒,经羧甲基纤维素离子交换层析,可得20个蛋白峰,磷脂酶A_2活性以第一峰活性最强,第二和第十二峰也有部分活性.取第一峰观察其对红细胞电泳速度的影响及对红细胞膜影响的电镜观察,发现磷脂酶A_2对红细胞电泳速度有明显的延缓作用,并对人的红细胞膜有明显的作用,但对山羊红细胞膜未见明显改变.研究还表明眼镜王蛇毒中磷脂酶A_2也具有很好的热稳定性.     

广西眼镜蛇毒细胞毒素对人卵巢癌细胞和宫颈癌细胞的抑制作用研究

目的：研究广西眼镜蛇毒细胞毒不对体外培养的人卵巢癌细胞和宫颈癌细胞株的抑制作用。方法：通过SephadexG-50,GM-Sepharose,CL-6B柱层析从广西眼镜蛇毒中分离纯化细胞毒素,应用四素氮唑蓝（MTT）法测定其对人卵巢癌细胞和宫颈癌细胞株的体外细胞毒作用及其最效关系,并与粗毒的抑瘤作用进行比较,结果：从广西眼镜蛇毒中分离到一种细胞毒素（CTX CM－5）,其对体外培养的人卵巢癌细胞和宫颈癌细胞株的抑制作用呈明显的剂量依赖关系。抑制率随剂是增加而呈迅速上升培养的人卵巢 细胞和宫颈癌细胞株具有较强的抑制作用。     

福建产舟山眼镜蛇毒细胞毒素的快速分离纯化及鉴定

目的 从舟山眼镜蛇毒中分离纯化细胞毒素(CTX)，并鉴定其理化性质。方法 采用SP—Sephadex C-25阳离子交换色谱及Sephasil Peptide C18反相高效液相色谱法从舟山眼镜蛇毒中分离纯化CTX，SDS—PAGE(Tris—Tricine系统)鉴定纯度，Edman降解法测定N端氨基酸序列。结果 粗毒经阳离子交换色谱，得到14个蛋白峰，其中第X～XⅢ峰具CTX活性；再分别经反相色谱纯化，得到4个CTX．总得率为32.48％；SDS—PAGE显示为均一蛋白，分子量依次为：7．28，7．33，7．24和7．38kD；测定它们N端20个氨基酸序列。结论 采用阳离子交换和反相高效液相色谱可快速、高效地从眼镜蛇毒中获得4个CTX纯品。     

舟山眼镜蛇毒L-氨基酸氧化酶的分离纯化、理化及酶学性质

目的 从舟山眼镜蛇蛇毒中分离L-氨基酸氧化酶(LAO),测定其理化和酶学性质.方法 应用Sephadex G-100凝胶色谱和POROS CM20离子交换色谱分离纯化LAO;Wellner和Lichtenberg法测定LAO活力,SDS-PAGE法测定相对分子质量.结果 舟山眼镜蛇蛇毒经Sephadex G-100凝胶色谱和两次POROS 20离子交换色谱后,获得LAO纯品(暂定名NA-LAO).NA-LAO在非还原和还原条件下相对分子质量均为58 kD左右;其反应最适pH为8.0,最适温度为60℃,对L-苯丙氨酸的米氏常数(Km)为3.08 mmoL/L.结论 应用凝胶过滤色谱和离子交换色谱可从舟山眼镜蛇毒中分离纯化LAO.     

眼镜王蛇神经毒素的提纯及其性质的研究

本文用SP-SephadexC-25柱层析法分离广西眼镜王蛇蛇毒,得到19个组分,其中7个组分有毒性。对毒性较强,含量较高的4个毒性组分(即神经毒素Ⅴ、Ⅶ、Ⅷ和Ⅹ)用SephadexG-50凝胶过滤法进行纯化,并对神蛇经毒素Ⅶ和Ⅹ用CM-SephadexC-50柱层析法做了进一步纯化。经聚丙烯酰胺凝胶电泳(PAGE)鉴定,这4个神经毒素均为单一条带。用SDS-PAGE法测得神经毒素Ⅴ、Ⅶ、Ⅷ和Ⅹ的分子量分别为7800,6700,8400和8000,并用它们进行了小鸡颈二腹肌神经—肌肉接头传递的阻遏试验,结果表明这4个神经毒素均有阻遏神经—肌肉接头传递的作用,而且阻遇作用基本不可逆,属于突触后神经毒素。     

中压液相层析法纯化人VLDL主要载脂蛋白

目的 建立中压液相层析分离法纯化人VLDL主要载脂蛋白(apo) E、CⅠ、CⅡ和CⅢ的方法.方法 以低温乙醇法制备人血浆白蛋白后的残余组分FⅡ Ⅳ为原料,经一次性密度梯度超离心得到VLDL.脱脂后的VLDL(apoVLDL)经中压Sephacryl S-200柱层析得到apoE和apoCs粗品.apoE经肝素琼脂糖CL-6B亲和层析进一步纯化,apoCs经DEAE-Sephacel离子交换层析进行分离.结果 apoE经肝素琼脂糖CL-6B亲和层析进一步纯化,可得纯度为93.8%的纯品;apoCs经离子交换层析分离得到纯度为92%以上的apoCⅡ、apoCⅢ.所纯化各载脂蛋白apo E、CⅠ、CⅡ及CⅢ经免疫单扩和SDS-PAGE鉴定为免疫纯及电泳纯.结论 成功建立了一种可大量、快速、高分辨分离提纯载脂蛋白apo E、CⅠ、CⅡ及CⅢ的方法.     

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…     

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.     

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.