肺癌患者与肺结核患者血清蛋白的电泳分析

采用SDS聚丙烯酰胺凝胶电泳银染色的方法,对58例肺癌患者和32例肺结核患者的血清蛋白进行比较分析,发现有五种特异蛋白,分别存在于A区、C区、F区和G区。肺癌组和肺结核组比较,存在极显著性差异(P<0.01),提示有早期诊断肺癌的价值,有可能成为临床诊断肺癌的一个重要参考指标。     

骨缘当归的化学成分

骨缘当归Angellica cartilaginomarginata var.foliata Yuan et Shen,别名:山藁本、野芹菜（江苏）,仅分布于江苏和浙江。在江苏镇江等地用干燥全草作山藁本入药,其化学成分未见报道。 样品采自江苏省句容县。将干根磨粉,提取物经中性氧化铝层析,根据色谱及光谱鉴定为两种脂肪酸、四种已知香豆素和一种植物甾醇即:正葵酸（n-capric acid）、月桂酸（lauric acid）、骨缘当归素（cartilaginomarginadin）、蝉翼素（pteryxin）、白花前胡素F（praeruptorin F）、佛手柑内酯（bergapten）及β-谷甾醇（β-sitosterol）。     

A real-world exploratory study on the feasibility of vonoprazan and tetracycline dual therapy for the treatment of Helicobacter pylori infection in special populations with penicillin allergy or failed in previous amoxicillin-containing therapies

Background

The treatment of Helicobacter pylori (H. pylori) infection is a challenge for those who cannot use amoxicillin.

Objective

To evaluate the eradication rate and adverse effects of vonoprazan and tetracycline dual therapy as first-line and rescue treatment regimens used in special populations with penicillin allergy or failed in previous amoxicillin-containing therapies.

Design

Patients enrolled were those who were H. pylori-positive with selected conditions: (1) allergic to penicillin, either naïve to treatment or had failed before; or (2) failed in previous amoxicillin-containing therapies. All enrolled patients accepted 14-day vonoprazan and tetracycline dual therapy (VT dual therapy) as follows: vonoprazan (20 mg b.i.d.) and tetracycline (500 mg t.i.d. [body weight < 70 kg] or 500 mg q.i.d. [body weight ≥ 70 kg]). H. pylori status was evaluated by ¹³C-urease breath test 6 weeks after treatment. All adverse effects were recorded. Some patients underwent bacterial culture and antibiotic susceptibility testing.

Results

A total of 62 patients were enrolled; 18 of them received VT dual therapy as first-line treatment, 44 patients received VT dual therapy as rescue treatment. Overall, 58 of 62 patients achieved successful eradication (93.5%), while all involved (100%,18/18) succeeded in the first-line treatment group and 40 cases (90.9%, 40/44) succeeded in the rescue treatment group. Sixty-one (61/62, 98.4%) patients completed the whole course of treatment. Adverse events occurred in 6 patients (6/62, 9.7%), while one patient quit because of skin rash. All adverse effects were mild and relieved spontaneously after H. pylori treatment. Five patients achieved successful H. pylori culture, and all strains isolated were sensitive to tetracycline.

Conclusions

For the treatment of H. pylori infection in special populations with penicillin allergy or failed in previous amoxicillin-containing therapies, a 14-day vonoprazan and tetracycline dual therapy was effective and safe as first-line and rescue treatment in our study. Further study is warranted to verify its efficacy, especially for those who cannot use amoxicillin.     

甲种胎儿球蛋白(AFP)定性定量酶联免疫试盒剂的研制

甲胎蛋白是一种癌胚相关蛋白,它在胎儿血清中含量每毫升数毫克之多,在正常人血清中低于25μg/ml,在原发性肝细胞癌者血清中甲胎蛋白的阳性率和滴度都很高,所以血清中甲胎蛋白的检测是诊断肝癌的特异指标。本方法采用双抗体夹心法原理,可定性及定量检测血清和血浆标本中甲胎蛋白含量,并配制AFP系列标准,为原发性肝癌的早期诊断及普查具有重要的临床意义。     

稻田两种狼蛛种间相互作用及对白背飞虱复合捕食作用的研究

室内研究结果表明,拟水狼蛛对白背飞虱的捕食作用小于拟环纹豹蛛,两种狼蛛种内种间均存在干扰作用,且主要表现为残杀作用,狼蛛密度越高,干扰作用越大;拟环纹豹蛛对拟水狼蛛的残杀作用大于对其身的残杀作用,拟水狼蛛只存在自相残杀作用,对拟环纹豹蛛无残杀作用。     

生长抑素受体2的小鼠时空组织表达谱

生长抑素(somatostatin, SST)作为一种抑制性多肽激素,在多种生物过程中发挥重要的功能。生长抑素受体2 (somatostatin receptor 2, SSTR2)作为生长抑素表达最广泛的受体在多种组织中表达,但其表达的具体细胞类型尚不清楚。本研究在小鼠不同发育阶段的多种组织中鉴定了SSTR2蛋白表达的细胞类型。通过多色免疫荧光在小鼠胚胎期15.5 d、出生后1 d、7 d、15 d、3个月和6个月的脑、骨、肺、肠道、皮肤、胃、脾和肾等组织中检测了Sstr2基因的表达。结果发现Sstr2在不同发育阶段的多种组织的特定细胞类型中表达,包括脑神经元和星形胶质细胞,骨的间充质基质细胞、造血细胞和B细胞,肺的巨噬细胞、Ⅱ型肺泡上皮细胞和气道纤毛细胞,肠道的上皮细胞和神经元,皮肤的毛囊细胞,胃体的上皮细胞,脾的造血干细胞、造血祖细胞和神经纤维,肾的肾小管上皮细胞等。本研究确定了小鼠多组织不同发育阶段Sstr2表达的细胞类型,为生长抑素与生长抑素受体2的生理功能研究提供了新的线索。     

TBC1D25 alleviates nonalcoholic steatohepatitis by inhibiting abnormal lipid accumulation and inflammation

Nonalcoholic fatty liver disease (NAFLD) is a strong stimulant of cardiovascular diseases, affecting one-quarter of the world's population. TBC1 domain family member 25 (TBC1D25) regulates the development of myocardial hypertrophy and cerebral ischemia–reperfusion injury; however, its effect on NAFLD/nonalcoholic steatohepatitis (NASH) has not been reported. In this study, we demonstrated that TBC1D25 expression is upregulated in NASH. TBC1D25 deficiency aggravated hepatic steatosis, inflammation, and fibrosis in NASH. In vitro tests revealed that TBC1D25 overexpression restrained NASH responses. Subsequent mechanistic validation experiments demonstrated that TBC1D25 interfered with NASH progression by inhibiting abnormal lipid accumulation and inflammation. TBC1D25 deficiency significantly promoted NASH occurrence and development. Therefore, TBC1D25 may potentially be used as a clinical therapeutic target for NASH treatment.