The radioprotector WR1065 reduces radiation-induced mutations at the hypoxanthine-guanine phosphoribosyl transferase locus in V79 cells

N-(2-mercaptoethyl)-lt3-diaminopropane (WR1065) protects againstradiation-induced cell killing and mutagenesis at the hypoxanthine-guaninephosphoribosyl transferase (HGPRT) locus in V79 Chinese hamsterhing fibroblast cells. At a concentration of 4 mM, WR1065 wasfound to be effective in protecting against radiation-inducedcell lethality only if present during irradiation, e.g., a dosemodification factor (DMF) of 1.9. No protective effect was observedif the protector was added within 5 min after irradiation or3 h later, e.g., DMFs of 1.0 and 1.1, respectively. The effectof WR1065 on radiation-induced mutation, expressed as resistanceto the cytotoxic purine analogue 6-thioguanine (HGPRT), wasalso investigated. In contrast to the treatment-schedule dependencefor protection by WR1065 against cell killing, this agent waseffective in reducing radiation-induced mutations regardlessof when it was administered. Following a dose of 10 Gy of ⁶⁰Co-rays, the mutation frequencies observed per 10⁶ survivors were77 ± 8, 27 ± 6, 42 ± 7, and 42 ±7 for radiation only, and WR1065 present during, immediatelyafter, or 3 h after irradiation. These data suggest that althougha segment of radiation-induced damage leading to reproductivedeath cannot be modulated through the postirradiation actionof WR1065, processes leading to the fixation of gross geneticdamage and mutation induction in surviving cells can be effectivelyaltered and interfered with leading to a marked reduction inmutation frequency.     

GDM患者脂肪组织中HMGB1表达与产后糖代谢异常的关系

目的研究脂肪组织中高迁移率族蛋白B1(HMGB1)表达增加与妊娠期糖尿病(GDM)患者胰岛素抵抗程度及产后糖代谢异常的关系。方法选择2016年10月至2019年3月期间在海安市中医院诊断为GDM并接受剖宫产的126例患者作为GDM组,选择同期在该院接受剖宫产的健康孕妇150例作为对照组,检测剖宫产当天孕妇血清HMGB1、空腹胰岛素(FINS)的含量及脂肪组织中HMBG1、胰岛素受体底物(IRS)-1、IRS-2的表达水平,计算胰岛素抵抗指数(HOMA-IR)。随访产后1年内糖代谢异常的发生情况并绘制K-M曲线。结果GDM组患者脂肪组织中HMGB1的表达水平、血清HMGB1含量及FINS、HOMA-IR水平明显高于对照组(t值分别为14.496、16.503、19.068、13.446,P<0.05),脂肪组织中IRS-1、IRS-2的表达水平明显低于对照组(t值分别为11.616、10.596,P<0.05);GDM组患者脂肪组织中HMGB-1的表达水平与血清HMGB1、FINS的含量及HOMA-IR的水平呈正相关(r值分别为0.405、0.358、0.405,P<0.05),与脂肪组织中IRS-1、IRS-2的表达水平呈负相关(r值分别为-0.278、0.255,P<0.05);经K-M曲线分析,与GDM组中脂肪组织HMGB1低表达患者比较,HMGB1高表达患者产后1年糖代谢异常累积发生率明显升高(χ^(2)=3.933,P<0.05)。结论GDM患者脂肪组织中HMGB1表达增加与胰岛素抵抗的加重、产后糖代谢异常的发生有关。     

Involvement of Fusarium spp. in fungal keratitis

Members of the filamentous fungal genus Fusarium are among the agents most frequently causing keratomycosis in humans. Fusarium keratitis is most common among agricultural workers in geographical regions with hot, humid, tropical or semi-tropical climates, but can occur more rarely in countries with temperate climates, such as Hungary. Keratitis is usually treated with a topical antifungal agent, sometimes in combination with sub-conjunctival injections and/or antimycotic agents, but therapeutic keratoplasty may be needed for patients whose corneal infection does not resolve. Early and accurate diagnosis, coupled with appropriate antifungal therapy, is crucial for improving the chances of complete recovery.     

双极人工股骨头置换术治疗高龄股骨颈骨折

目的 通过对６６例７０岁以上老年人股骨颈骨折临床分析,探讨其手术可行性、术式选择。方法 回顾分析患者的术前并存症、术前准备、术式选择、麻醉方式、术中情况、术后处理及随诊情况。结果 本组无术中死亡病例,平均住院２８天,平均随访２６个月。良好率６３．６％。结论 ７０岁以上老人股骨颈骨折行双极股骨头置换术治疗是可行的。     

临床活体部分小肠移植术移植肠的处理

目的 报告我国首例活体小肠移植术的移植肠处理体会。方法 为１例１８岁男性超短肠综合征患放行了活体部分小肠移植术,供肠来自患的父亲（４４岁）,切取供体回肠１５０ｃｍ,ＵＷ液灌洗血管,将移植肠动、静脉车受体腹主动及及下腔静脉而吻合,移植肠近端与受体空肠近端行端端吻合,远端与受体空肠远端行侧端吻合,末端造口,术后给子抗排斥,抗感染,抗凝及营养支持等治疗。结果 术后管出现贫血,单纯疱疹病感染和急性排斥     

肾综合征出血热患者血液透析前后的血液流变性及甲襞微循环变化

目的 探讨肾综合征出血热（ＨＦＲＳ）合并争性肾功衰竭（ＡＲＦ）患者血液透析（ＨＤ）前后的血液流变性及甲臂微循环的变化规律。方法 采用瑞曲Ｇａｍｂｒｏ公司生产的ＡＫ－１０型血液透析机治疗患者４５型,血液流变学及甲臂微循环指标分别采用成都仪器厂的ＮＸＥ－１型锥板式粘度计和徐州光学仪器厂的ＭＸ－７５３Ｂ微循环显微镜检测,所得数据按田牛氏综合定量评价方法,计算综合加权积分值。结果 ＨＤ前后患者血中ＢＵＮ,     

Surgical management of villous and tubulovillous adenomas of the rectum]

One hundred four cases of middle and low rectal villous and tubulovillous adenomas have been operated on with transanal polypectomy (8), transanal endoscopic microsurgery--TEM (80), anterior rectum resection with double stapled straight sigmoideorectosomy (7), and deep rectum resection, bi-directional mucosectomy and hand sutured straight sigmoideoanostomy (9). The option of the authors to remove the tumours in 5 cm to the dentate line are the transanal polypectomy or transanal mucosectomy corresponding to their size. The transanal endoscopic microsurgical technic is recommended to manage the polyps smaller than 4 to 5 cm in the middle rectum. The best radicallity in removal of the circular, extended villous adenomas could be achieved with deep rectum resection, bi-directional mucosectomy and transanal straight, hand sewn sigmoideoanostomy.     

Abdominal actinomycosis presenting as a malignant tumor--report of a case and review of the literature

Actinomyces israelii is a normal inhabitant in the gastrointestinal tract of humans, it rarely causes disease. Abdominal involvement occurs in only 20 percent of all cases and can mimic malignant diseases, tuberculosis and inflammatory bowel disease. A case of a 36 years old female patient with abdominal actinomycosis and review of the literature is reported. Symptoms was presented as an acute abdomen associated with painful epigastric and left subcostal mass. The pathologic process infiltrated the retroperitoneal space simulated sarcoma or lymphoma. Diagnosis was established only at the second laparotomy, when histologic examination of the removed lymph node disclosed actinomycosis. The patient is completely free of symptoms 6 month after the second operation.     

Relationship between clinical and radiological diagnostic criteria for Alzheimer's disease and the extent of neuropathology as reflected by 'stages': a prospective study

The distribution of pathology related to Alzheimer's disease (AD) is not uniform throughout the brain. Sites which have a predilection for the development of Alzheimer-type pathology are the limbic regions and neocortical association areas. The changes in these areas of the brain develop gradually, following a well-determined sequence that allows a pathological staging of the disease process. According to the staging hypothesis, the first pathological alterations develop in the transentorhinal and entorhinal regions. The neurofibrillary pathology then spreads into the hippocampus, but not until the final stages does it affect the neocortex. In this study we analyse the relationship between the pathological stages of AD, according ot the staging hypothesis, and the clinical diagnosis in a prospectively assessed patient group. Prediction of any given pathological stage from the clinical diagnosis was found to be poor. This may be partly due to the fact that additional pathologies can alter the clinical picture and severity of dementia in patients who are only in the initial stages of AD. Nevertheless, the NINCDS-ADRDA clinical criteria had a high sensitivity for detection of AD-related pathology: the 'probable AD' category included 22/38 (57.9%) of those in the late isocortical stage, while the 'possible AD' category included 19/23 (82.6%) of those in the limbic stage. Using proposed neuro-imaging protocols for improved identification of patients with AD-related pathology, we largely identified subjects in whom the extent of pathology had spread to the neocortex.     

PEG-Hemoglobin as a resuscitation solution in the treatment of hypovolemic shock in the anesthetized rat

This study was designed to determine the advantages of using the hemoglobin-based oxygen carrier, polyethylene glycol conjugated bovine hemoglobin (PEG-Hb), as an additive to Ringer's lactate solution (RLS) for the treatment of acute hemorrhage in anesthetized female rats. Different compositions of PEG-Hb and RLS were administered intravenously in a paradigm that provided 30 ml/kg of resuscitation fluid following an episode of 15 min of hypotension. Hypotension was achieved by the removal of blood (1 ml/min) from the femoral vein until the mean arterial pressure was lowered to or below 50 mmHg and subsequently maintained until resuscitation. Short-term cardiovascular assessment showed that resuscitation fluids containing PEG-Hb resulted in higher mean arterial pressure, aortic blood flow, renal blood flow, and less dramatic shifts in arterial base excess and respiratory blood gases than plain RLS. The long-term survival experiment showed lower lactate dehydrogenase, alkaline phosphatase, and serum glutamic pyruvic transaminase levels in most groups resuscitated with solutions containing PEG-Hb, but no differences in survival (100%) were observed. The data suggest that the addition of PEG-Hb to RLS improves its resuscitative effects. Specifically, a solution of 50% RLS:50% PEG-Hb appeared to have the most favorable cardiovascular and metabolic effects in this anesthetized rat hypovolemic shock resuscitation model. Presumably, the improved effects seen with the addition of PEG-Hb were due to its innate plasma expansion and oxygen-delivery capabilities.