IMMUNOLOGICAL DIAGNOSIS OF LIGHT CHAIN DISEASE ANALYSIS OF 11 CASES FOUND IN FUJIAN PROVINCE

The present paper reports 11 cases of light chain disease (LCD) sequently found in several citles over Fujian province, Immunological classification of this group of LCD ww as follows: six of me cases belonged to type λ, four of them were type κ, and another one was a double LCD. We found that LCD was common in Fujlan only next to multiple myeloma (MM) of IgG class and accounted for 20% of the total 55 MM cases found in recent yean.It to well known that In matt patients of LCD M protein or Bence Jones proteinemia (BJPemia) to not detectable by conventional electro-phoresis. Our studies show that by making serum protein along with urinary BJP electrophoresis on the same one gel plate the sltuation can be greatly Improved It not only favour* the recognition of smail and faint band or bands of free light chain in serum, but also provides a repid and sensitive way, i. e. , immunofixation, to directly detect urinary light chain on the gel plate Immediately after electrophresis has been run.     

肝内HBcAg与血清学指标的关系及慢性乙型肝炎发病机理的探讨

We detected the presence and distribution of HBcAg in the liver by immunohistochemistry (ABC method) and the presence of HBV-DNA in serum (spot hybridization) and anti-HBe in serum (ELISA) from 59 cases of hepatitis B hospitalized in our hospital, including 47 cases of CAH, 5 cases of CPH, and 7 cases of subacute fulminant hepatitis. 1. HBcAg in the liver was detected in 25 out of 47 cases (53%) of CAH, in 2 out of 5 cases of CPH and in 4 out of 7 cases of subacute fulminant hepatitis. The total percentage was 53% (31/59). 2. There was no positive correlation between HBV replication activity and liver disease activity (P greater than 0.05). Our results did not support the hypothesis that suggests a direct cytopathic effect of HBV. Oppositely, the fact was that the presence, the amount and the patterns of HBcAg in the liver, and the presence of HBV-DNA in serum were predominant in mild CAH compared with those in severe CAH, predominant in CAH without cirrhosis compared with those in CAH with cirrhosis. There was a tendency of inverse correlation between HBV replication activity and liver disease activity. The results above were in line with the concept that HBcAg expressed on the surface of infected hepatocytes may be relevant target for T lymphocyte cytotoxicity. The results have suggested that an immune response to HBV is present, leading to the destruction of most infected cells. 3. There was a positive correlation between HBV-DNA in serum and HBcAg in the liver (P less than 0.005), indicating that HBV-DNA in serum can represent HBV replication.(ABSTRACT TRUNCATED AT 250 WORDS)     

学龄儿童行为问题危险因素配对研究

将２１４名经Ｒｕｔｔｅｒ儿童行为问卷调查评定为有行为问题的学龄儿童与２１４名对照儿童进行了配比分析，以探讨学龄儿童行为问题的危险因素。研究结果表明，父、母文化程度和父亲职业是影响学龄儿童行为问题的重要因素；多因素条件Ｌｏｇｉｓｔｉｃ逐步回归分析结果显示父母文化程度偏低是学龄儿童行为障碍的两项独立危险因素。文中对学龄儿童行为问题的预防和矫治进行了讨论。     

面神经损伤诱导主要组织相容性复合体抗原表达

探讨外周面神经损伤诱导面神经核小胶细胞表达主要组织相容性复合体抗原及其动态变化。面神经损伤后采用免疫组织化学技术，以单克隆抗体ＯＸ１８检测ＭＨＣⅠ类抗原，单克降抗体ＯＸ６检测ＭＨＣⅡ类抗，原观察ＭＨＣ抗原阳性细胞的形状、分布及数量变化。     

光量子疗法中圆面紫外灯辐照度的定量研究

本文根据光辐射的基本概念，应用数学物理方法，导出了血液辐射治疗仪中带反射罩的紫外线灯的辐照度的计算公式，用ＸＴ－Ａ型紫外光功率计，对ＸＬ－２００型血液辐射治疗仪进行实测，经过计算分析，定出了公式中的待定参数，并应用公式对各实测点进行计算对比，计算值与实测值符合得非常好，发现紫外灯辐射度并简单的指标衰减，为近距离辐照剂量的估算提供了一个有价值的公式，从而将光量子疗法中关于辐照剂量问题的研究定量化。     

Comparison of local tumor recurrence following excision with the CO2 laser, Nd:YAG laser, and Argon Beam Coagulator

This study compares the incidence of local tumor recurrence following primary excision with the CO2 laser, Nd:YAG laser (contact), Argon Beam Coagulator, or electrocautery. One hundred eight Fisher 344 rats with R3230AC mammary tumors (1.6 +/- 0.04 [SD] cm diameter) were used. All animals were randomized into groups of similar tumor size. In groups C and CS, excision was performed with a Sharplan 1060 CO2 laser (TEMoo, 25 W, continuous wave [CW], 0.2-mm spot size). Wounds in group CS were "sterilized" (0.5-mm spot size, 25 W, CW) by gently heating the wound without causing blanching or charring. In group N, a 0.4-mm contact Laser Blade and a Cooper 8000 Nd:YAG laser at 20 W CW was used. In groups SA1 and SA2, tumors were excised with the scalpel, and hemostasis and wound "sterilization" were accomplished with the Bard System 6000 Argon Beam Coagulator (ABC) at 40 W and 4 liters/min argon gas flow in SA1 and 12 liters/min in SA2. In group E, excision was accomplished at 40 W blend mode, 10 W spray mode. In group EA, excision was accomplished at 60 W cutting current, and hemostasis was achieved with the ABC. The animals were examined for evidence of recurrence for 34 days postoperatively. Mortalities were excluded from analysis. The incidence of recurrence was 11/14 (79%) in C, 6/16 (38%) in CS, 10/14 (71%) in SA1, 6/13 (46%) in SA2, 6/15 (40%) in N, 7/10 (70%) in EA, and 3/15 (20%) in E. Group E is statistically different (P less than .01) from groups EA, C, and SA1. Group C was different (P less than .01) from groups E, CS, and N. These results demonstrate an inverse relationship between tumor recurrence and local thermal effects at the surgical site. The ABC did not increase tumor recurrence. Contact YAG surgery was similar to CO2 laser excision and "sterilization." An attempt to study the influence of gas flow and pressure on local tumor recurrence and metastases should be made.     

测定左旋吡喹酮血药浓度的反相高效液相色谱法

本文建立了测定左旋吡喹酮血药浓度的高效液相色谱分析方法.以ODS-C_(18)化学键合相(5μm)作为固定相,甲醇:水(7:3V/V)作为流动相;用吡喹酮的衍生物作为内标准品.采用紫外检测器(λ=220nm),得出检出限为2.5ng,最低检出血药浓度为0.012μg/ml血清,线性范围为0.012～1.6μg/ml血清(γ=0.999),方法回收率为93.4～97.2%.本法简便、灵敏、专一、重现性好,适用于左旋吡喹酮血药浓度测定及药物动力学研究     

KMT2C通过c-Myc/CDK4信号通路调控胃癌细胞的生长与增殖

摘要:目的 探究赖氨酸特异性甲基转移酶2C(lysine specific methyltransferase 2C,KMT2C)在胃癌发生发展中的 作用及机制。方法 通过 TCGA 数据库分析 KMT2C在胃癌与癌旁的表达差异。采用 Western blot检测 KMT2C在胃 癌与癌旁临床样本中的表达差异。通过 Kaplan-Meier Plotter数据库分析 KMT2C 对胃癌患者预后的影响。采用细胞 实验(克隆形成、EdU 及 CCK-8检测)及皮下瘤负荷模型检测 KMT2C 在体内外对胃癌细胞增殖能力的影响。结果 KMT2C在胃癌中高表达。胃癌患者中 KMT2C高表达组相对于 KMT2C低表达组预后较差。敲减 KMT2C在体内外 均有抑制胃癌 细 胞 增 殖 的 作 用。基 因 集 富 集 分 析 (GSEA)发 现 KMT2C 影 响 c-Myc信 号 通 路。敲 减 KMT2C 后, H3K4me1蛋白表达水平降低,同时,CDK4的 mRNA 与蛋白表达水平降低。KMT2C与c-Myc核内结合促进了c-Myc 与 CDK4的启动子区域的结合。结论 KMT2C通过影响c-Myc/CDK4信号通路促进胃癌细胞增殖。     

血液肿瘤患者肛拭子耐碳青霉烯类肠杆菌目主动筛查情况及继发血流感染的影响因素

目的 探讨血液肿瘤患者肛拭子耐碳青霉烯类肠杆菌（CRE）主动筛查情况及继发血流感染的影响因素。方法 选取2020年9月—2022年6月在苏州大学附属第一医院治疗的血液肿瘤患者1 258例,所有患者行肛拭子CRE主动筛查,分析CRE定植分布、血流感染情况及其影响因素。结果 共检出CRE 109株,以肺炎克雷伯菌、大肠埃希菌为主;10例患者发生CRE血流感染;CRE酶型分布中,主要以NDM、KPC为主;有中性粒细胞缺乏患者CRE定植发生率高于无中性粒细胞缺乏患者（P<0.05）;有消化道症状患者CRE定植发生率高于无消化道症状患者（P<0.05）;多因素逐步Logistic回归分析结果显示,中性粒细胞缺乏■是血液肿瘤患者CRE定植发生的影响因素（P<0.05）。不同性别、年龄、疾病类型及有无中性粒细胞缺乏、消化道症状患者的血流感染发生率比较,差异均无统计学意义（P>0.05）。结论 血液肿瘤患者肛拭子CRE主动筛查能有效筛出CRE感染者,CRE定植感染与中性粒细胞缺乏有关,临床应加以重视。     

胎儿筛骨的形态学研究

本文从组织学角度,研究胎儿筛骨的形态学变化以及水平板、纸板和筛凹的发育特点。结果表明:筛骨整体(在冠状位)呈等腰梯形,即纸板为梯形的两边;胎儿期的纸板在水平切面上呈向外凹的骨板,至出生时呈轻微的“S”形弯曲;胚胎第24周后,水平板的外侧部分逐渐形成筛凹,并随筛窦的气化而变薄,形成筛窦的顶部。上述结果提示:出生时其眶内侧壁(主要为纸板)结构不呈矢状平面,且与水平板间的角度(斜度)随胎龄增长而增大(P<0.01);筛骨水平板则由内侧部分的筛板和外侧部分的筛凹组成。