Severe gastric dilatation due to superior mesenteric artery syndrome in anorexia nervosa

Forty‐seven year old female, with a history of anorexia nervosa, was admitted to a medical stabilization unit (ACUTE) complaining of abdominal pain exacerbated by oral intake, associated with nausea, and relieved by emesis. Admission body mass index was 10.6. Labs were notable for hepatitis and hypoglycemia. On her progressive oral refeeding plan, she suddenly developed severe abdominal pain. Computed tomography (CT) revealed gastric dilatation and superior mesenteric artery (SMA) syndrome. SMA syndrome is a rare complication of severe malnutrition resulting from compression of the duodenum between the aorta and the SMA. It is diagnosed by an upper gastrointestinal series or an abdominal CT. Gastric dilatation, in turn, is a rare complication of SMA syndrome to be included in the differential diagnoses of abdominal pain in severely malnourished patients as it is potentially life‐threatening. The patient was switched to an oral liquid diet, began weight restoring, and had resolution of symptoms. © 2015 Wiley Periodicals, Inc. (Int J Eat Disord 2015; 48:532–534)     

CYP17A1和AR在脑胶质瘤中的表达及意义

目的探讨细胞色素P450c17a酶(CYP17A1)、雄激素受体(androgen receptor,AR)的表达与胶质瘤临床病理之间的相关性。方法应用免疫组化二步法检测55例胶质瘤组织和10例正常脑组织标本的CYP17A1蛋白和AR蛋白的表达情况。结果 1CYP17A1蛋白的表达在高级别胶质瘤和低级别胶质瘤之间具有差异性(χ~2=12.034,P0.05),而正常脑组织中未见表达。CYP17A1蛋白的表达与病理级别呈正相关(r=0.705,P0.05)。2AR蛋白的表达在高级别胶质瘤和低级别胶质瘤之间具有差异性(χ~2=19.509,P0.05),而正常脑组织中未见表达。AR蛋白的表达与病理级别呈正相关(r=0.73,P0.05)。结论CYP17A1蛋白及AR蛋白在脑胶质瘤组织中表达明显高于正常组织,且CYP17 A1蛋白及AR蛋白在胶质瘤组织中的表达情况与病理级别密切相关,提示雄激素轴在胶质瘤的发生发展中起到了重要的作用。     

Equol is more active than soy isoflavone itself to compete for binding to thromboxane A(2) receptor in human platelets

Introduction

Several dietary intervention studies examining the health effect of soy isoflavones allude to the importance of equol in establishing the cardiovascular response to soy protein. Although, the specific mechanism by which this action occurs has not been established. The aim of this study was to investigate the inhibitory effect of soy-isoflavones and the metabolite of daidzein, equol, on agonist-induced platelet responses dependent on thromboxane A₂ (TxA₂) receptor.

Material and methods

Competitive radioligand binding assay was used to screen for affinity of these compounds to the TxA₂ receptor. The effect of equol on platelet activation, evaluate through of release of the ATP, by analogs of TxA₂ was analyzed. The effect of equol on platelet aggregation was investigated with ADP, U46619 (a TxA₂ mimic) and the calcium ionophore A23187.

Results

The data showed that aglycone isoflavones and equol bind to TxA₂ receptor in the µmol/L range, whereas their glucoside derivates had very low binding activity for this receptor. Under equilibrium conditions, the following order of the relative affinity in inhibiting [³H]-SQ29585 binding was: equol > genistein > daidzein > glycitein ? genistin, daidzin, glycitin. Equol interaction was reversible and competitive for labeled-SQ29548 with not apparent decrease in the number of TxA₂ binding sites. In addition, from platelet activation studies, equol effectively inhibited ATP secretion elicited by the TxA₂ analog U46619. On the other hand, equol inhibited the platelet aggregation induced by U46619 and A23187, while it failed to inhibit that induced by ADP.

Conclusions

The aglycone isoflavones from soy, and particularly equol, have been found to have biological effects attributable to thromboxane A₂ receptor antagonism. These findings may help elucidate how dietary isoflavone modulate platelet function and explain why soy-rich foods are claimed to have beneficial effects in the prevention of thrombotic events.     

β-七叶皂甙钠对急性脑梗死患者神经功能及血清TNF-α、IL-6水平的影响

目的探讨β-七叶皂甙钠对急性脑梗死患者神经功能及血清TNF-α、IL-6水平的影响。方法急性脑梗死患者91例,随机分为常规治疗组和七叶皂甙钠组,常规治疗组患者根据病情给予常规治疗,七叶皂甙钠组在常规治疗组的基础上加给生理盐水250ml加β-七叶皂甙钠20mg,连续使用14d,两组患者在入院后24h、治疗后7、14、30d进行神经功能缺损评分并抽取静脉血测定TNF-α、IL-6水平。结果两组患者入院24h、治疗后30d血清TNF-α、IL-6水平差异无统计学意义（P〉0.05）;治疗后7、14d两组患者血清TNF-α、IL-6水平差异具有统计学意义（P〈0.05）。两组患者入院24h、治疗后7、14d神经功能缺损评分差异无统计学意义（P〉0.05）;治疗后30d两组患者神经功能缺损评分差异有统计学意义（P〈0.05）。结论β-七叶皂甙钠能够降低急性脑梗死患者血清TNF-αI、L-6水平,改善神经功能缺损评分。     

氢醌对人骨髓单个核细胞拓扑异构酶Ⅱα表达的影响

目的 研究苯代谢物氢醌(hydroquinone,HQ)对人骨髓单个核细胞中拓扑异构酶(TOPO)Ⅱα表达的影响,探讨TOPOⅡα在HQ所致造血毒性中的作用及调控机制.方法 50μmol/LHQ处理的正常人骨髓单个核细胞为实验组,设立对照组(等体积灭菌蒸馏水培养),应用TOPOⅡ检测试剂盒检测TOPOⅡ的活力,免疫印迹法(Western blotting)检测TOPOⅡα含量的变化,反转录-聚合酶链反应(RT-PCR)法检测TOPOⅡα mRNA表达水平的改变,染色质免疫沉淀分析法(ChIp)检测TOPOⅡα含量的变化.结果 (1)正常人骨髓单个核细胞50 μmol/LHQ处理10 h后,TOPOⅡ的活力下降,TOPOⅡα含量以及TOPOⅡαmRNA水平分别为0.017±0.029、0.610±0.128,较对照组明显下降,差异有统计学意义(P<0.01);(2)TOPOⅡα含量降低伴随着TOPOⅡα启动子组蛋白H4乙酰化水平的明显降低(分别为1.198±0.056、0.324±0.229),差异有统计学意义(P<0.01),不伴有组蛋白H3乙酰化水平的改变,分别为1.253±0.045、1.177±0.025;(3)HQ接触不同时间TOPOⅡαmRNA水平呈动态变化,且TOPOⅡα启动子水平的变化早于mRNA水平的变化.结论 HQ可抑制造血细胞TOPOⅡα的表达.组蛋白化学修饰水平的改变在苯代谢物所致的造血毒性中发挥一定的作用.     

SMA、Desmin、CD10和Vimentin在特殊类型子宫肿瘤诊断中的应用

[目的]探讨SMA、Desmin、CD10和Vimentin在特殊类型子宫肿瘤诊断中的应用价值。[方法]收集特殊类型子宫肿瘤76例（子宫内膜间质肉瘤20例,癌肉瘤17例,平滑肌肉瘤10例,非典型平滑肌瘤16例,上皮样平滑肌瘤13例）,免疫组化SP法检测各组织中平滑肌肌动蛋白（SMA）、结蛋白（Desmin）、CD10和波形蛋白（Vimentin）的表达。[结果]CD10与Vimentin在子宫内膜间质肉瘤和癌肉瘤中高表达,SMA和Desmin在非典型平滑肌瘤和上皮样平滑肌瘤中高表达,Vimentin在平滑肌肉瘤中高表达。[结论]SMA、Desmin、CD10和Vi-mentin在特殊类型子宫肿瘤的诊断中有重要意义。     

Bowel Ultrasound in Crohn Disease: Current Role and Future Applications

Background: The majority of hemochromatosis patients are homozygous for the HFE-C282Y mutation. However, less than half of C282Y homozygous subjects identified by population screening studies actually develop the disease. The cytokine TNF- &;#33 is implicated in the regulation of iron metabolism at different levels. Our aim was to study the role of TNF- &;#33 and its promoter polymorphisms in the phenotypic expression of hemochromatosis in individuals with and without the C282Y mutation. Methods: We studied 4 groups of 10 subjects each: ( 1 ) C282Y homozygotes without clinical hemochromatosis; ( 2 ) C282Y homozygotes with hemochromatosis; ( 3 ) secondary hemochromatosis (without C282Y mutation); and ( 4 ) controls. Groups were age-matched and sex-matched. Peripheral blood mononuclear cells (PBMC) were stimulated with lipopolysaccharide (LPS) and the release of TNF- &;#33 was measured. Additionally, the G/A polymorphisms at position -238 and -308 of the TNF- &;#33 gene were determined by PCR and RFLP analysis in 178 hemochromatosis patients and 41 controls. Results: TNF- &;#33 production from PBMC at 8 and 24 &;#114 h after increasing concentrations of LPS stimulation were similar in the four groups. The prevalence of TNF- &;#33 polymorphisms was similar in patients and controls. The prevalences of cirrhosis, siderosis, median s-ferritin and median ALT values were similar in patients with and without the TNF- &;#33 polymorphisms. Conclusions: Neither TNF- &;#33 released from PBMC nor the presence of TNF- &;#33 polymorphisms seem to be associated with disease manifestation in hemochromatosis.     

Identification of Hb Q-India (64 Asp→His) in Thailand

More than 30 different hemoglobin variants either affecting  or β globin chains have been identified in Thailand. The large variety in the different forms of hemoglobinopathy contributes to several complicated interactions, since different types of defective globin alleles are prevalent in Thailand and nearly 30-40% of the population are carriers of either  or β thalassemia (thal). Many rare and novel abnormal globin variants in Thai subjects have been identified in our laboratory within the past few years; including Hb Lepore-Hollandia, homozygous Hb Tak, Hb Dhonburi, Hb G-Makassar, Hb G-Coushatta, Hb New York, Hb Paksè and Hb Pak Num Po. In addition to these, here we report, for the first time, the identification of Hb Q-India, an innocuous  globin variant, in a Thai family with Indian ancestry. This report highlights the complexity associated with identifying unknown globin variants within a population that has a heterogeneous repertoire of globin chain disorders.