活血化瘀联合温阳生肌法治疗青斑样血管炎临床分析

目的分析青斑样血管炎的临床特征及中医证候特点,提高对本病的诊断及中医辨证水平。方法对12例确诊的青斑样血管炎患者的临床表现、组织病理、中医证候、中医治则、方药、预后进行回顾性分析。结果12例患者中男3例,女9例,年龄15~45岁,平均年龄20.17岁,中医药治疗时间为14~70 d,平均时间为54.60 d。12例患者均为对称皮疹,均伴有疼痛;皮损特点均为红斑、水疱、紫癜、坏死、水肿、溃疡,呈现线状或放射状分布;皮损痊愈后见色素沉着斑或线状象牙白色萎缩性瘢痕。所有患者经过组织病理确诊。12例患者均符合寒凝血瘀证。坏死期选用活血化瘀法,应用桃红四物汤加减;溃疡期选用温阳生肌法,应用自拟方温阳生肌汤加减。局部使用黄连膏换药。12例患者经中医药治疗后皮损均完全消退,溃疡愈合,遗留色素沉着斑及象牙白色萎缩性瘢痕。停药后随访6个月无1例复发。结论活血化瘀联合温阳生肌法为中医治疗青斑样血管炎提供了新的思路,并能明显降低复发率,值得进一步研究。     

新疆生产建设兵团第十师羊小反刍兽疫抗体监测与评价

为了评估新疆生产建设兵团第十师北屯市(以下简称师市)羊群小反刍兽疫强制免疫效果,应用酶联免疫吸附试验(ELISA)对2017-2020年全师8个农牧团场采集的4 010份血清进行小反刍兽疫抗体检测,并按单位、年份、类别对检测结果进行了统计分析。结果表明,2018-2020年全师8个农牧团场小反刍兽疫血清抗体平均合格率为84.69%(3 396/4 010),均符合国家农业农村部相关规定,高于平均值的三家单位是E 87.22%(157/180)、G 86.45%(268/310)、H 88.67%(798/900),合格率最低的是D 76.11%(137/180);养殖合作社的抗体合格率为84.81%(1 340/1 580),养殖大户为84.65%(2 057/2 430)均接近于平均合格率,两者差异不显著(P>0.05)。总体来看,师市羊群小反刍兽疫免疫效果较好,为确保师市辖区内重大动物疫病免疫无疫提供技术保障。     

中医药靶向调节p53介导的铁死亡机制研究进展

铁死亡是一种新发现的非凋亡调节性细胞死亡形式，以铁依赖性的脂质过氧化物及活性氧（ROS）累积为主要特征。p53是一种抑癌基因，可以通过介导多种关键细胞基因的转录调控，诱导细胞周期阻滞、凋亡、自噬和衰老，进而维持基因组稳定性。新近研究发现p53还可通过影响铁代谢、多不饱和脂肪酸（PUFAs）代谢、氨基酸代谢和烟酰胺腺嘌呤二核苷酸磷酸盐（NADPH）介导的多种细胞代谢过程，调控铁死亡，参与肿瘤、神经系统疾病、心血管疾病、肝病、肾病等疾病的病理进展。该文对p53介导的铁死亡在相关疾病转归中的作用机制及其影响因素进行了系统综述，同时追踪了中医药靶向调节p53介导的铁死亡防治肿瘤、脑卒中、急性心肌梗死、慢性心力衰竭、动脉粥样硬化、溃疡性结肠炎、佐剂性关节炎等疾病的研究进展，以期为相关疾病的防治提供新思路。     

Clinical predictors of readmission after surgery for Hirschsprung disease

The reasons for readmission of children with Hirschsprung disease (HD) are multiple. The study aims to predict the relevant factors for the readmission of children with HD by collecting and analyzing the relevant data of the child''s admission to the hospital at the time of surgery.A retrospective review was performed including all patients with surgical treatment of HD at our institution between the years of 2011 to 2020. Univariate and multivariate Logistic regression analysis were performed to obtain the independent risk factor for this study. The receiver operating characteristic curve (ROC) were used to assess the performance of derived models.A total of 162 patients were identified. The average presurgery weights were 6.93 ± 1.78 kg in the readmission group and 8.38 ± 3.17 kg in the non-readmission group. Six children were classified as a low-weight in the readmission group, and 11 children classified as low-weight in the non-readmission group. The length of the intestinal tube after resection was 25.25 ± 15.21 cm in the readmission group, and 16.23 ± 4.10 cm in the non-readmission group. The ROC for the prediction model of readmission after HD surgery (AUC = 0.811).In children undergoing the HD surgery, we showed preoperative low body weight and long intra-operative bowel resection significantly increase the probability of readmission due to complications.     

Transcranial Focused Ultrasound Enhances Sensory Discrimination Capability through Somatosensory Cortical Excitation

Low-intensity transcranial focused ultrasound (tFUS) has emerged as a non-invasive brain neuromodulation tool with high spatial specificity. Previous studies attributed tFUS-enhanced sensory performance to the ultrasound-induced inhibitory neural effects. However, to date there is no direct evidence validating the neural mechanism underlying ultrasound-mediated somatosensory enhancement. In this study, healthy human subjects (N = 9) were asked to perform tactile vibration frequency discrimination tasks while tFUS was directed onto the primary somatosensory cortex. During this task, we simultaneously recorded 64-channel electroencephalography (EEG) signals and investigated the brain responses at both EEG sensors and source domains by means of electrophysiological source imaging (ESI). The behavioral results indicated that the subjects' discrimination ability was improved by tFUS with an increased percentage of correct responses. EEG and ESI results revealed that tFUS neuromodulation was able to improve sensory discrimination capability through excitatory effects at the targeted sensory cortex.     

Adult‐onset inflammatory linear verrucous epidermal nevus: Immunohistochemical studies and review of the literature

Adult‐onset inflammatory linear verrucous epidermal nevus (ILVEN) is an uncommon cutaneous disease compared to childhood‐onset ILVEN. The typical histopathologic features are alternating parakeratosis and orthokeratosis with an absent granular layer underneath parakeratosis, in contrast to a thickened granular layer below the foci of orthokeratosis in psoriasiform epidermal hyperplasia. Herein, we present a 49‐year‐old woman with typical clinical and histopathologic characteristics of adult‐onset ILVEN, including linear arrangement of thick scaly papules and plaques localized on the medial side of her right leg, ankle, and foot. Immunohistochemical studies included involucrin, Ki‐67, and keratin‐10. Compared to the staining pattern in psoriasis, the expression of involucrin in this case was of lower intensity and localized to upper epidermal layers with relatively less extensive staining beneath regions of parakeratosis as compared to orthokeratosis; Ki‐67 showed lower basal layer proliferative activity; and keratin‐10 showed a greater intensity of staining within suprabasal epidermis.     

Prostate volume as an independent predictor of prostate cancer in men with PSA of 10–50?ng ml?1

Prostate volume (PV) has been shown to be associated with prostate cancer (PCa) detection rates in men with a prostate-specific antigen (PSA) in the ‘grey zone'' (2.0–10.0 ng ml⁻¹). However, the PSA ‘grey zone'' in Asian men should be higher because the incidence of PCa in Asian men is relatively low. Therefore, we evaluated the association between PV and PCa detection rates in men with PSAs measuring 10–50 ng ml⁻¹. Men who underwent a 13-core prostatic biopsy with PV documentation participated in the study. A multivariate stepwise regression was used to evaluate whether the PV at time of prostate biopsy could predict the risk of PCa. The rates of PCa among men in different PSA ranges, stratified by PV medians (<60 and ≥60 ml), were calculated. There were 261 men included in the final analysis. PV was the strongest predictor of PCa risk (odds ratio, 0.02; P<0.001) compared to other variables. The PCa rates in men with PVs measuring <60 and ≥60 ml in the 10–19.9 ng ml⁻¹ PSA group were 40.6% and 15.1%, respectively, while the rates for men with PSAs measuring 20–50 ng ml⁻¹ were 65.1% and 26.8%. PV is an independent predictor of PCa in men with PSA measuring 10–50 ng ml⁻¹. In clinical practice, particularly for those countries with lower incidences of PCa, PV should be considered when counselling patients with PSAs measuring 10–50 ng ml⁻¹ regarding their PCa risks.     

卡培他滨中有机残留溶剂的检测

目的建立气相色谱法测定卡培他滨原料药中二氯甲烷、乙醇、甲醇和乙酸乙酯4种有机溶剂。方法采用DB-624毛细管柱,FID检测器,以DMSO为溶剂。结果各有机溶剂的平均加样回收率为93.7%～97.6%,RSD为2.5%～3.7%。结论该方法稳定准确,可用于卡培他滨中有机溶剂残留的检测。     

膀胱癌组织中GCS的表达研究

目的:研究神经酰胺合成酶(GGS)在膀胱癌中的表达及作用.方法:采用Western-Blot及免疫组化技术检测神经酰胺合成酶(GCS)在膀胱肿瘤组织和正常组织胞膜中的表达情况.结果:Western-Blot及免疫组化结果均证实,相对于正常组织,GCS在膀胱肿瘤中有较高的表达水平(P＜0.01),GCS光密度值的测量也显示,GCS不仅在膀胱癌中的表达明显高于正常组织中(P＜0.01),而且在膀胱癌复发组的表达也明显高于未复发组(P＜0.05).结论:GCS在膀胱癌肿瘤组织发生、发展过程中可能起重要的调控作用,是判断膀胱癌分化、预后的一种理想指标.