用正交试验法确定 VMUC100 超精研机床参数

用正交试验法确定ＶＭＵＣ１００超精研机床参数哈尔滨轴承股份有限公司成品七分厂（１５００３０）薛玉泉ＶＭＵＣ１００超精研机床是八十年代初国产的。用于圆锥滚子及圆柱滚子轴承内、外套圈滚道精研工序，加工直径Φ４０～Φ１００ｍｍ。它是在良好的润条件下工件以最...

腹部手术后形成粘连性肠梗阻手术指征的影响因素研究

目的探讨腹部手术后形成粘连性肠梗阻手术指征的影响因素。方法回顾性分析2020年6月至2022年12月深圳市龙华区人民医院收治的105例腹部手术后出现粘连性肠梗阻患者的临床资料,根据是否行粘连性肠梗阻手术分为手术组(30例)和非手术组(75例)。比较两组患者临床指标(肠粘连史、是否有腹痛加重或不缓解、是否有严重腹胀、是否发热、是否触及肿大肠襻、是否合并腹膜炎、是否有肠鸣音减弱、是否有腹腔积液及是否贫血)及炎症因子[白细胞计数(WBC)、超敏C反应蛋白(hs-CRP)]水平,分析影响腹部手术后形成粘连性肠梗阻手术指征的独立危险因素。结果手术组患者有肠道粘连史、有腹痛加重或不缓解、触及肿大肠襻、合并腹膜炎、有肠鸣音减弱及有腹腔积液占比高于非手术组,且WBC、hs-CRP水平高于非手术组(P<0.05)。多因素Logistic回归分析显示,有肠粘连史、合并腹膜炎、有腹腔积液及WBC、hs-CRP水平升高是行粘连性肠梗阻手术的独立危险因素(P<0.05)。结论肠粘连史、有腹膜炎、有腹腔积液及WBC、hs-CRP水平升高为腹腔术后粘连性肠梗阻患者手术指征的独立危险因素,临床应加强患者病史评估及炎症指标的监测,尽早明确粘连性肠梗阻患者是否需要进行手术。

紫杉醇药物涂层球囊治疗老年冠状动脉小血管病变的效果分析

目的 分析紫杉醇药物涂层球囊对老年冠状动脉小血管病变患者的治疗效果,为临床提供参考。方法 回顾性分析2021年1月至2022年1月北京市仁和医院收治的88例行经皮冠状动脉介入治疗(PCI)术的老年冠状动脉小血管病变患者的临床资料。根据术中介入治疗方案不同分为药物涂层球囊(DCB)组(49例,给予紫杉醇药物涂层球囊治疗)与药物洗脱支架(DES)组(39例,给予雷帕霉素支架治疗)。比较两组患者治疗效果、造影结果、主要心脏不良事件(MACE)发生情况及出血情况。结果 DCB组患者整体疗效优于DES组,且总有效率高于DES组(P<0.05)。术后即刻,两组患者最小血管直径大于术前、血管狭窄程度小于术前,且DCB组最小血管直径大于DES组、血管狭窄程度小于DES组(P<0.05);术后8个月,DCB组的晚期管腔丢失(LLL)水平低于DES组(P<0.05)。术后12个月,两组患者MACE总发生率比较,差异无统计学意义(P>0.05)。术后12个月,DCB组患者出血总发生率低于DES组(P<0.05)。结论 PCI中予紫杉醇药物涂层球囊治疗老年冠状动脉小血管病变患者,可有效预防患者二次狭窄,保障治疗效果与安全性。

VMGC60精研机的PC群控

ＶＭＧＣ６０精研机的ＰＣ群控郴州轴承厂（４２３０００）陆武魁叙词超精加工机，电气控制ＶＭＧＣ６０精研机有独立的两个工作头，机械运动简单，易于修理。但由于是早期制造的产品，其控制方式较为落后且弊端较多，电气故障率高，影响其效益的发挥，弃之不用又甚感可惜...

用PC机改造VMGC60超精研机

一、PC机简介 PC机结构简单、功能完备、可靠性高,用来改造旧设备极其方便。PC机具有实现逻辑电路的功能,程序由编程器写入PC机后,PC机就可以按预定的程序动作,控制设备。二、VMGC60超精研机的电气改装该机床是轴承行业应用较广泛的一种设备,调整方便,生产效率较高。

CLINICAL RESEARCH OF JIAJI(夹脊EX-B2) IN TREATMENT OF SPASTIC CEREBRAL PALSY WITH ACUPUNCTURE

Objective To observe the clinical therapeutic effects of Jiájǐ（夹脊EX-B2） on spastic cerebral palsy （SOP） with acupuncture.Methods 62 cases of SOP were randomized into two groups,named treat- ment group with acupuncture on Jiájǐ（夹脊EX-B2）,and control group with sham-acupuncture.The treatment was applied once a day,10 times made a course,totally 6 courses were required.Modified Ashworth scale and FIM grade were used to observe and assess the results of treatment.Results The total effective rate was 84.4 % in treatment group and was 63.3 % in control group,indicating significant difference （P〈0.01）. Conclusion Acupuncture on Jiájǐ（夹脊EX-B2） achieves good clinical therapeutic effects on SCP.

CATGUT EMBEDDING FOR TREATMENT OF SIMPLE OBESITY COMPLICATED WITH ABNORMAL BLOOD FAT

Objective To compare the therapeutic effect of catgut embedding combined with diet plus exercise with that of diet plus exercise in treating simple obesity complicated with abnormal blood fat. Methods A prescription of diet plus exercise was given to the patients in a control group, and catgut embedding was added to the prescription in a treatment group. It was given once every 15 days for the 1st three treatments, and once every month for the 2^nd three treatments. Six treatments constituted a therapeutic course. Body weight and blood fat were measured before and half a year since treatment. Results After treatment, BMI, TO, TG and LDL were very significantly improved in the treatment group （P〈0.01）, and BMI and TG were very significantly （P〈0.01） and TO and LDL were significantly （P〈0.05） improved in the control group. HDL was not obviously improved in both groups （P〉0.05）. The improvement of TO, TG and LDL in the treatment group was significantly more than that in the control group （P〈0.01）, but no difference in improvement of BMI and HDL was found between the two groups （P〉0.05）. Conclusion The therapy of diet plus exercise was effective in body weight reduction and lowering blood fat in patients with simple obesity complicated with abnormal blood fat, and catgut embedding used in combination was even better in lowering blood fat.

ISSUES AND MEASURES ON ASSISTED REPRODUCTION BY ACUPUNCTURE ABROAD

As the application of acupuncture has been increased year by year in the field of overseas reproduction, it has become crucial to give a scientific and objective evaluation of the safety and efficacy of acupuncture in the field of assisted reproduction, which attaches great importance to the sustainable development of acupuncture in the field of reproduction. This article aims to introduce the current situation of overseas clinical study in the field of assisted reproduction, analyze the existing issues profoundly and put forward measures to solve them, in order to enhance the level of international clinical study of acupuncture.

CLINICAL RESEARCH ON TREATMENT OF DYSPHAGIA WITH NECK ACUPUNCTURE

Objective To observe the clinical therapeutic effects on dysphagia induced by pseudobulbar palsy chiefly treated with neck acupuncture and probe into the mechanism on the effects. Methods The 86 cases that had been diagnosed definitely were randomized into two groups, the treatment group and control group. The treatment group （acupuncture＋western medication） （44 cases） was treated with acupuncture on Fēngfǔ（风府 GV16）, Fēngchí （风池GB20）, Gòngxě（供血 Extra）, Yīmíng （翳明 EX-HN14）, Zhìqiāng （治呛 Extra）, Tūnyàn （吞咽 Extra）, Fāyīn （发音 Extra）, Liánquán （廉泉CV23）, etc., and the intravenous injection with Shuxuetong （疏血通） 6- 10 mL and 0.9%, NaCl 250 mL. The control group （western medication） （42 cases） was treated with the intravenous injection with Shuxuetong （疏血通） 6- 10 mL and 0.9%, NaCl 250 mL. Results The total effective rate was 97.73 % and 80.95 % in the treatment group and control group respectively, indicating very significant difference （P 〈 0.01 ）. Conclusion The therapeutic effects mainly with neck acupuncture are better on dysphagia induced by psudalbulbar palsy, which is superior to that with simple western medication and worth to be promoted. Concerning to the mechanism on the therapeutic results, it is viewed that acupuncture on neck points improves the excitability of cerebral neurocytes, resuscitates the reversible neurocytes or awakens the inhibited neurocytes.

Effect of Platelet Activation and Endothelial Cell Injury on Malignant Cancer

Objective: To study the effects of platelet activation and endothelial cell injury on the patients with malignant tumor and their prognoses.Methods: Radioimmunity and ELISA methods were employed to detect the TXB2, GMP-140, vWF, cGMP and FN in 78 cases of malignant tumor and 40 healthy control persons.Results: The levels of TXB2, MP-140 and cGMP were increased in intestinal cancer group, lung cancer group and hepatic cancer group, while FN decreased in intestinal cancer and lung cancer group. cGMP was positively related to TXB2, GMP-140, vWF in malignant tumor group. FN was decreased in the group complicated with infection and the group with metastasis, while the other indexes increased. GMP-140, vWF and cGMP was decreased after operation except for the increasing of FN.Conclusion: Activations of platelet and injury of endothelial cells developed in patients with malignant tumor, and both of them affected the metastasis and prognosis of malignant tumor. Key words platelet activation - epithelium injury - malignant tumor - metastasis This work was supported by grants from Guangdong Medical Science foundation (A2000633).

CLINICAL RESEARCH OF IMPACTS ON PLASMA ENDOTHELIN AND INTELLIGENCE IN MULTI-INFARCT DEMATIA TREATED WITH CLUSTER PRICKING ON HEAD POINTS

Objective To probe into the impacts on the therapeutic effects and endothelin （ET） in multi-infarct dementia （MID） treated with cluster pricking on head points.Methods 60 cases of MID were randomized into acupuncture group and western medicine group,treated with cluster pricking on head points and huperzien A tablet respectively.Plasma ET lever,HDS,ADL and CNFDS （clinical neurological functional defect scoring） were determined before treatment,and the statistical analysis showed that there were no significant difference （P〉0.05）.Results In 8-week treatment,ET level in both groups were decreased,but it was decreased much more obviously in acupuncture group,indicating significant difference in the statistical comparison （P〈0.05）.The scores of HDS and ADL were all up in acupuncture and western medicine groups,but the significant statistical difference was obtained in the comparison between acupuncture group and western medicine group （P〈0.05）.In acupuncture group,the result of CNFDS was much down comparing with that before the treatment,indicating significant difference （P〈0.05）;but in western medicine group,there was no significant difference in CNFDS before and after treatment （P〉0.05）,suggesting that acupuncture reduces CNFDS of MID patient,neither for western medicine.Conclusion Cluster pricking on head points improves the intelligence of MID patient,reduces ET level and grades up HDS and ADL,moreover,it reduces CNFDS of MID patients and releases the symptoms.

Analysis of the Current situation of Syphilis in a Sexually Transmitted Disease Clinic

Objective： To analyze the current situation of syphilis in the sexually transmitted diseases （STDs） clinic, from January 1994 to December 2002 was studied. Methods： All syphilis patients were confirmed by history, physical examination, dark-field microscopy of samples taken from the chancre or satellite lymph nodes,or positive serological tests. Results： From 1994 to 2002, there were 2067 cases of early syphilis, accounting for 20.01% （2067/10330） of all STD cases. The annual proportion of syphilis cases among all STD cases from 1994 to 2002 was 0.57%, 0.53%, 3.54%, 16.20%, 31.29%, 27.88%, 25.63%, 17.11%, 10.48%, respectively. Of 2067 syphilis patients,49.64% （1026/2067） were male and 50.36% （1041/2067） were female. 44.75% （925/2067） of all cases presented with primary syphilis, 44.90% （928/2067） with secondary syphilis, 9.77% （202/2067） with latent syphilis （without any conspicuous clinical signs or symptoms）, and 0.58% （12/2067） with congenital syphilis. The 30-39 year old cohort accounted for the largest proportion, at 37.68% （779/2067） of all syphilis cases. The 20-29 year old cohort also accounted for a large proportion, at 37.20% （769/2067） of all cases,followed by the 40-49 year old cohort, at 17.95% （371/2067）. Syphilis was most prevalent among the unemployed,self-employed laborers, and office workers in decreasing order. The majority of cases were graduates of either primary school, high school, or college. Of all syphilis cases, 87.86% （1816/2067） were married, and 12.14%（251/2067, including children） were unmarried. 76.78% （1587/2067） of all cases were acquired through extramarital intercourse. 14.03% （290/2067） of cases were infected by their spouses. 0.58% （12/2067） of cases were due to vertical transmission. 8.61% （178） of cases were acquired through indirect contact. Conclusion： The proportion of syphilis infection among all STDs remained stable from 1994 to 1995,quickly and dramatically increased from 1996 to 1999,and then gradually tapered down from 2000 to 2002. The incidence of congenital syphilis infections increased throughout the study period.

基于“治未病”探讨证候类中药新药的临床研究

证候类中药新药的开发引起业界的广泛关注,但其研究却始终未能突破瓶颈。本文从研究模式、临床定位、证候选择、疗效评价等方面探讨证候类中药新药的临床研究,并提出了基于"治未病"的证候类中药新药的临床研究思路。

Viral and cellular determinants involved in hepadnaviral entry

Hepadnaviridae is a family of hepatotropic DNA viruses that is divided into the genera orthohepadnavirus of mammals and avihepadnavirus of birds. All members of this family can cause acute and chronic hepatic infection, which in the case of human hepatitis B virus （HBV） constitutes a major global health problem. Although our knowledge about the molecular biology of these highly liver-specific viruses has profoundly increased in the last two decades, the mechanisms of attachment and productive entrance into the differentiated host hepatocytes are still enigmatic. The difficulties in studying hepadnaviral entry were primarily caused by the lack of easily accessible in vitro infection systems. Thus, for more than twenty years, differentiated primary hepatocytes from the respective species were the only in vitro models for both orthohepadnaviruses （e.g. HBV） and avihepadnaviruses （e.g. duck hepatitis B virus [DHBV]）. Two important discoveries have been made recently regarding HBV： （1） primary hepatoo/tes from tree-shrews; i.e., Tupaia belangeri, can be substituted for primary human hepatocytes, and （2） a human hepatoma cell line （HepaRG） was established that gains susceptibility for HBV infection upon induction of differentiation in vitro. A number of potential HBV receptor candidates have been described in the past, but none of them have been confirmed to function as a receptor. For DHBV and probably all other avian hepadnaviruses, carboxypeptidase D （CPD） has been shown to be indispensable for infection, although the exact role of this molecule is still under debate. While still restricted to the use of primary duck hepatocytes （PDH）, investigations performed with DHBV provided important general concepts on the first steps of hepadnaviral infection. However, with emerging data obtained from the new HBV infection systems, the hope that DHBV utilizes the same mechanism as HBV only partially held true. Nevertheless, both HBV and DHBV in vitro infection systems will help to： （1） functionally dissect the hepadnaviral entry pathways, （2） perform reverse genetics （e.g. test the fitness of escape mutants）, （3） titrate and map neutralizing antibodies, （4） improve current vaccines to combat acute and chronic infections of hepatitis B, and （5） develop entry inhibitors for future clinical applications.

Correlation of N-myc downstream-regulated gene 1 expression with clinical outcomes of colorectal cancer patients of different race/ethnicity

AIM： To evaluate the role of N-myc downstream- regulated gene 1 （NDRG1） expression in prognosis and survival of colorectal cancer patients with different ethnic backgrounds. METHODS： Because NDRG1 is a downstream target of p53 and hypoxia inducible factor-1α （HIF-1α）, we examined NDRG1 expression together with p53 and HIF-1α by irnmunohistochernistry. A total of 157 colorectal cancer specimens including 80 from Japanese patients and 77 from US patients were examined. The correlation between protein expression with clinicopathological features and survival after surgery was analyzed. RESULTS： NDRG1 protein was significantly increased in colorectal tumor compared with normal epithelium in both Japanese and US patient groups. Expression of NDRG1 protein was significantly correlated with lymphatic invasion, venous invasion, depth of invasion, histopathological type, and Dukes＇ stage in Japanese colorectal cancer patients. NDRG1 expression was correlated to histopathological type, Dukes＇ stage and HIF-1α expression in US-Caucasian patients but not in US-African American patients. Interestingly, Kaplan-Meier survival analysis demonstrated that NDRG1 expression correlated significantly with poorer survival in US-African American patients but not in other patient groups. However, in p53-positive US cases, NDRG1 positivity correlated significantly with better survival. In addition, NDRG1 expression also correlated significantly with improved survival in US patients with stages Ⅲ and IV tumors without chemotherapy. In Japanese patients with stages Ⅱ and Ⅲ tumors, strong NDRG1 staining in p53- positive tumors correlated significantly with improved survival but negatively in patients without chemotherapy. CONCLUSION： NDRG1 expression was correlated with various clinicopathological features and clinical outcomes in colorectal cancer depending on the race/ethnicity of the patients. NDRG1 may serve as a biological basis for the disparity of clinical outcomes of colorectal cancer patients with different ethnic backgrounds.

Experimental and clinical study of influence of high-frequency electric surgical knives on healing of abdominal incision

AIM： To study the influence of high-frequency electric surgical knives on healing of abdominal incision. METHODS： Two hundred and forty white rats were divided into 10^0, 10^2, 10^5, and 10^8 groups and rat models of abdominal operation were induced by using electric surgical knives and common lancets respectively. Then they were respectively given hypodermic injections of normal saline and 0.2 mL quantitative mixture of Escherichia coil, Staphylococcus aureus and Pseudornonas aeruginosa at a concentration of 10^2, 10^5 and 10^8. On the basis of the animal experiment, 220 patients undergoing abdominal operations （above type Ⅱ） were randomly allocated into one of following three groups： electric knife （EK, 93 cases）, electro-coagulation （EC, 55 cases） and control （72 cases）. High-frequency electric surgical knives were used to dissect abdominal tissues and electro-coagulation for hemostasis in EK group. Common lancets and electro-coagulation were applied in EC group. Common lancets and tieing silk suture were used in the controls. RESULTS： In all the groups except group 10^0, infection rate of incisional wounds made by electric surgical knives were remarkably higher than that with common lancets. Furthermore, there were significant differences in groups 10^2, 10^5, and 10^8 （P 〈 0.05）, but not in group 10^0 （P 〉 0.05） between EK and EC groups. Clinical studies showed a delayed wound healing in 16 cases （17.20%） in EK, 11 cases （16.36%） in EC and 2 cases （2.86%）in the control groups. A significant difference between EK and the control groups （χ^2= 8.57, P 〈 0.01）, and between EC and the control groups （χ^2 = 5.66, P 〈 0.05） was observed, but not between EK and EC （χ^2= 0.017, P 〉 0.05）. CONCLUSION： High-frequency electric knives may remarkably delay abdominal incision healing. Its application should be minimized so as to reduce the possibility of postoperative complications.

Recent advances in basic and clinical aspects of inflammatory bowel disease: Which steps in the mucosal inflammation should we block for the treatment of inflammatory bowel disease?

There are four steps in the interaction between intestinal microbes and mucosal inflammation in genetically predisposed individuals from the viewpoints of basic and clinical aspects of inflammatory bowel disease （IBD）. The first step is an interaction between intestinal microbes or their components and intestinal epithelial cells via receptors, the second step an interaction between macrophages and dendritic cells and mucosal lymphocytes, the third step an interaction between lymphocytes and vascular endothelial cells, and the fourth step an interaction between lymphocytes and granulocytes producing proinflammatory cytokines or free radicals and mucosal damage and repair. Recent therapeutic approaches for IBD aim to block these four steps in the intestinal inflammation of patients with IBD.

Impact of alanyl-glutamine dipeptide on severe acute pancreatitis in early stage

AIM:To evaluate the therapeutic effect of alanyl- glutamine dipeptide (AGD) in the treatment of severe acute pancreatitis (SAP) in early and advanced stage. METHODS: Eighty patients with SAP were randomized and received 100 mL/d of 20% AGD intravenously for 10 d starting either on the day of (early treatment group) or 5 d after (late treatment group) admission. Groups had similar demographics, underlying diseases, Ranson score, Acute Physiology and Chronic Health Evaluation Ⅱ (APACHE Ⅱ) score, and Balthazar’s computed tomography (CT) score at the beginning of the study and underwent similar other medical and nutritional management. RESULTS: The duration of acute respiratory distress syndrome (2.7 ± 3.3 d vs 12.7 ± 21.0 d, P < 0.01), renal failure (1.3 ± 0.5 d vs 5.3 ± 7.3 d, P < 0.01), acute hepatitis (3.2 ± 2.3 d vs 7.0 ± 7.1 d, P < 0.01), shock (1.7 ± 0.4 d vs 4.8 ± 3.1 d, P < 0.05), encephalopathy (2.3 ± 1.9 d vs 9.5 ± 11.0 d, P < 0.01) and enteroparalysis (2.2 ± 1.4 d vs 3.5 ± 2.2 d, P < 0.01) and hospital stay (28.8 ± 9.4 d vs 45.2 ± 27.1 d, P < 0.01) were shorter in the early treatment group than in the late treatment group. The 15-d APACHE Ⅱ score was lower in the early treatment group than in the late treatment group (5.0 ± 2.4 vs 8.6 ± 3.6, P < 0.01). The infection rate (7.9% vs 26.3%, P < 0.05), operation rate (13.2% vs 34.2%, P < 0.05) and mortality (5.3% vs 21.1%, P < 0.05) in the early treatment group were lower than in the late treatment group.CONCLUSION: Early treatment with AGD achieved a better clinical outcome in SAP patients.