Atypical cutaneous γδ T cell proliferation with morphologic features of lymphoma but with clinical features and course of PLEVA or lymphomatoid papulosis

Reactive lymphoid infiltrates of the skin composed predominantly of gamma‐delta (γδ) T cells are not well described in the literature. Herein we report a case of an otherwise healthy 4‐year‐old male who presented with a waxing and waning papular rash characterized by small, discrete crusted papules spread across his trunk, face and extremities. Clinical evaluation revealed no evidence of systemic disease. Microscopic examination revealed a dermal, perivascular infiltrate of highly atypical lymphocytes with a γδ T cell phenotype, worrisome for primary cutaneous γδ T cell lymphoma. The clinical course, however, was that of a reactive condition and prompted consideration of a diagnosis of pityriasis lichenoides et varioliformis acuta (PLEVA) and lymphomatoid papulosis (LyP). In many ways, this case defies current classification schemes and seems to expand the spectrum of reactive γδ T cell infiltrates of the skin.     

Rapid Increase in Neural Conduction Time in the Adult Human Auditory Brainstem Following Sudden Unilateral Deafness

Individuals with sudden unilateral deafness offer a unique opportunity to study plasticity of the binaural auditory system in adult humans. Stimulation of the intact ear results in increased activity in the auditory cortex. However, there are no reports of changes at sub-cortical levels in humans. Therefore, the aim of the present study was to investigate changes in sub-cortical activity immediately before and after the onset of surgically induced unilateral deafness in adult humans. Click-evoked auditory brainstem responses (ABRs) to stimulation of the healthy ear were recorded from ten adults during the course of translabyrinthine surgery for the removal of a unilateral acoustic neuroma. This surgical technique always results in abrupt deafferentation of the affected ear. The results revealed a rapid (within minutes) reduction in latency of wave V (mean pre = 6.55 ms; mean post = 6.15 ms; p < 0.001). A latency reduction was also observed for wave III (mean pre = 4.40 ms; mean post = 4.13 ms; p < 0.001). These reductions in response latency are consistent with functional changes including disinhibition or/and more rapid intra-cellular signalling affecting binaurally sensitive neurons in the central auditory system. The results are highly relevant for improved understanding of putative physiological mechanisms underlying perceptual disorders such as tinnitus and hyperacusis.     

肠愈宁颗粒对溃疡性结肠炎大鼠部分免疫机制的影响

目的:研究不同剂量的肠愈宁颗粒对溃疡性结肠炎(UC)模型大鼠结肠血清白细胞介素-1β(IL-1β)、肿瘤坏死因子-α(TNF-α)和白细胞介素-4(IL-4)表达的影响,阐述其抗UC的免疫机制。方法:48只雄性Wistar大鼠平均随机分成6组:空白对照组、模型组、肠愈宁高剂量组、肠愈宁中剂量组、肠愈宁低剂量组、美沙拉嗪对照组。应用三硝基苯磺酸(TNBS)/乙醇复合灌肠法诱导UC大鼠模型,评估疾病活动指数(DAI),结肠黏膜损伤指数(CMDI)并进行组织损伤指数(TDI)评分,酶联免疫吸附测定法(ELISA)检测大鼠IL-1β、TNF-α、IL-4的变化。结果:注入5% TNBS 50 mg/kg＋50%乙醇0.25 mL连续1周可成功导致大鼠患上溃疡性结肠炎(UC),肠愈宁颗粒可对抗5% TNBS 50 mg/kg＋50%乙醇所致的大鼠UC,与模型组比较,加入肠愈宁高剂量组、肠愈宁中剂量组的DAI、CMDI和TDI评分均降低,IL-1β、TNF-α表达下调,IL-4表达上调。结论:肠愈宁颗粒抵抗溃疡性结肠炎(UC)的作用显著,其机制可能与下调促炎因子TNF-α以及白细胞介素IL-1β的表达,上调促炎因子IL-4的表达有关。     

蓝莓花青素对人胃腺癌BGC-823细胞增殖、侵袭的影响及机制研究

目的:探讨蓝莓花青素(BA)对人胃腺癌BGC-823细胞增殖、侵袭的影响及相关机制。方法:低、中、高剂量实验组与对照组人胃腺癌BGC-823细胞分别以25、50、100μg/mL BA与等量生理盐水处理,分别处理12 h、24 h、48 h。采用噻唑蓝(MTT)与流式细胞仪检测人胃腺癌BGC-823细胞增殖与凋亡;采用Transwell小室实验与免疫细胞化学法检测人胃腺癌BGC-823细胞侵袭与P53、半胱氨酸蛋白酶-3(Caspase-3)蛋白表达。结果:干预48 h时,对照组、低、中、高剂量实验组人胃腺癌BGC-823细胞P53与Caspase-3蛋白阳性细胞百分比分别为(11.12±1.01)%,(24.31±2.18)%,(47.56±2.91)%,(66.49±5.14)%与(15.04±1.23)%,(28.22±3.09)%,(69.36±5.42)%,(86.52±6.15)%。实验组胃腺癌BGC-823细胞增殖抑制率随BA浓度增大而逐渐升高;与对照组比较,低、中、高剂量实验组人胃腺癌BGC-823细胞凋亡率、P53与Caspase-3蛋白阳性细胞百分比均显著升高,侵袭率降低,呈浓度依赖性(均P0.05)。结论:BA可有效抑制胃腺癌BGC-823细胞增殖,诱导其凋亡,并降低侵袭能力,其机制可能与上调P53与Caspase-3蛋白表达有关。     

The relationship between childhood maltreatment and psychopathology in adults undergoing bariatric surgery

Background

A history of childhood maltreatment and psychopathology are common in adults with obesity.

No Influence of the Fat Mass and Obesity-Associated Gene rs9939609 Single Nucleotide Polymorphism on Blood Lipids in Young Males

The fat mass and obesity-associated gene (FTO) rs9939609 A-allele is linked to obesity and dyslipidemia, yet the independent influence of this polymorphism on blood lipids remains equivocal. We examined the influence of the FTO rs9939609 polymorphism on fasting and postprandial blood lipids in individuals homozygous for the risk A-allele or T-allele with similar anthropometric and demographic characteristics. 12 AA and 12 TT males consumed a standardized meal after fasting overnight. Blood samples were collected at baseline (−1.5 h), before the meal (0 h), and for five hours postprandially to measure lipid, glucose, and insulin concentrations. Time-averaged total area under the curve (TAUC) values (0–5 h) were calculated and compared between genotypes. Fasting triacylglycerol (TG), high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, total cholesterol, non-esterified fatty acid (NEFA), glucose, and insulin concentrations were similar between groups (p ≥ 0.293). TAUC for TG was similar in AAs and TTs (95% confidence interval (CI) −0.52 to 0.31 mmol/L/h; p = 0.606). Likewise, TAUC values were similar for NEFA (95% CI −0.04 to 0.03 mmol/L/h; p = 0.734), glucose (95% CI −0.41 to 0.44 mmol/L/h; p = 0.951), and insulin (95% CI −6.87 to 2.83 pmol/L/h; p = 0.395). Blood lipids are not influenced by the FTO rs9939609 polymorphism, suggesting the FTO-dyslipidemia link is mediated by adiposity and weight management is important in preventing FTO-related lipid variations.     

新癀片用于口腔种植牙术后肿胀疼痛中的治疗效果观察

目的：探析口腔种植牙术后肿胀疼痛采取新癀片进行治疗的效果及对炎性因子的影响。方法：选取2015年1月至2019年12月北京中医药大学东直门医院收治的口腔种植牙术后肿胀疼痛患者300例作为研究对象，按照随机数字表法随机分为对照组和观察组，每组150例，对照组采用红霉素治疗，观察组采用新癀片联合红霉素治疗，比较2组患者术后肿胀和术后疼痛持续时间、牙槽骨吸收量、种植牙功能、种植体唇侧骨厚度、周围边缘骨吸收量、炎性反应因子水平、治疗优良率等指标。结果：与对照组比较，观察组术后肿胀持续时间、术后疼痛持续时间明显较短（P<0.05）；观察组种植牙功能评分等明显高于对照组（P<0.05）；观察组种植体唇侧骨厚度、周围边缘骨吸收量与对照组比较有明显差别（P<0.05）；观察组CPR、IL-6、PCT等炎性反应因子水平明显较低（P<0.05）；观察组治疗总有效率明显高于对照组（P<0.05）。结论：口腔种植牙术后肿胀疼痛应用新癀片进行治疗，能获得较为理想的效果，改善炎性反应因子水平，有着极大的推广价值。