Unusual morphologic features of low‐grade endometrial stromal sarcoma: A case report

BackgroundEndometrial stromal tumours are uncommon tumours of the uterus. They mainly occur in perimenopausal women. Tumours with typical clinicopathological features do not usually pose diagnostic problems. However, rare clinicopathological features can occur, and clinicians without significant experience may have difficulty diagnosing these tumours and managing these patients.MethodsHerein, we report a case of endometrial stromal sarcoma that occurred in a 25‐year‐old woman. The pathological features, immunophenotype, treatment and prognosis were discussed.ResultsThe tumour revealed morphological heterogeneity, and there were similar proliferative‐type endometrial stromal cells, an extensive amount of mature adipose tissue, and prominent rhabdomyoblastic and smooth muscle cells. Histopathological and immunohistochemical studies confirmed low‐grade endometrial stromal sarcoma with smooth muscle, adipocytic and rhabdomyoblastic differentiation (approximately 60% were differentiated tissues). The final treatment of the tumour was total abdominal hysterectomy with bilateral salpingo‐oophorectomy. There was no evidence of recurrence for 109 months postoperatively.ConclusionsWe found that low‐grade endometrial stromal tumours with extensive adipocytic and prominent rhabdomyoblastic differentiation are misdiagnosed because they are infrequent. They must be differentiated from rhabdomyosarcoma with accurate identification of adipocytes, and long‐term follow‐up is needed.     

前体脂质体型猪肺表面活性物质对整肺灌洗兔呼吸窘迫模型的治疗作用

目的:观察前体脂质体型猪肺表面活性物质(PPPS)对整肺灌洗兔呼吸窘迫模型的治疗作用.方法:将PPPS水化后,经气管滴入治疗整肺灌洗型成年兔呼吸窘迫模型,观察兔的生命体征、血气、动态肺顺应性等指标的变化.结果:整肺灌洗后模型兔的血气pH、PaO2急剧下降,PaCO2轻度上升,心率明显减慢而呼吸频率增加,SBP和DBP均明显下降;支气管肺泡灌洗液中PS含量明显下降;病理检查提示出现肺出血、肺不张、肺泡萎缩、透明膜形成等病变,符合Ⅰ型重症呼吸衰竭临床诊断标准.经气管滴入PPPS后,可以使RDS模型兔的各项指标(pH、PaO2、PaCO2、HR、BR、SBP、DBP)明显改善,肺部的病理改变也明显减轻.统计学分析结果提示,治疗组和对照组pH(F=4.572,P=0.046)、PaO2(F=557.586,P=0.000)、PaCO2(F=96.798,P=0.000)、TV(F=117.851,P=0.000)、Cydn(F=276.996,P=0.000)、HR(F=34.975,P=0.000)、BR(F=28.167,P=0.000)、SBP(F=124.751,P=0.000)和DBP(F=108.672,P=0.000)比较差异均有统计学意义;在治疗组中,各个时间点的pH、PaO2、PaCO2、TV、Cydn、HR、BR、SBP和DBP比较差异均有统计学意义.结论:PPPS对实验性PS缺乏和肺损伤造成的呼吸窘迫有显著的治疗作用.     

新生儿暂时性呼吸困难的肺部超声表现

目的 观察新生儿暂时性呼吸困难的肺部超声特点。方法 选取2018年7月至2019年6月扬州大学医学院附属淮安市妇幼保健院收治的60例暂时性呼吸困难患儿作为观察组,选取同期60例胎龄相近的健康新生儿作为对照组。观察组患儿分别在出生后6 h内和72 h后进行肺部超声检查,对照组患儿仅在出生后6 h内进行肺部超声检查,分析其肺部超声特点。结果 超声检查发现,所有患儿均无实变发生。出生后6 h内,观察组患儿胸膜线异常、A-线消失、存在B-线、肺泡间质综合征、双肺点和胸腔积液的发生率高于对照组,差异有统计学意义（P<0.05）。观察组出生后72 h后患儿胸膜线异常、A-线消失、存在B-线、肺泡间质综合征、双肺点和胸腔积液的发生率低于出生后6 h内超声检查结果,差异有统计学意义（P<0.05）。结论 暂时性呼吸困难患儿具有胸膜线异常、A-线消失、存在B-线、肺泡间质综合征、双肺点、无实变发生和胸腔积液等特点,肺部超声对新生儿暂时性呼吸困难的早期诊断和病情监测具有重要价值。     

An integrated strategy for the comprehensive profiling of the chemical constituents of Aspongopus chinensis using UPLC-QTOF-MS combined with molecular networking

ContextThe extracts of Aspongopus chinensis Dallas (Pentatomidae), an insect used in traditional Chinese medicine, have a complex chemical composition and possess multiple pharmacological activities.ObjectiveThis study comprehensively characterizes the chemical constituents of A. chinensis by an integrated targeted and untargeted strategy using UPLC-QTOF-MS combined with molecular networking.Materials and methodsThe ultra-performance liquid chromatography-tandem quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) combined with molecular networking-based dereplication was proposed to facilitate the identification of the chemical constituents of aqueous and ethanol extracts of A. chinensis. The overall strategy was designed to avoid the inefficiency and costliness of traditional techniques. The targeted compounds discovered in the A. chinensis extracts were identified by searching a self-built database, including fragment ions, precursor ion mass, and other structural information. The untargeted compounds were identified by analyzing the relationship between different categories, fragmentation pathways, mass spectrometry data, and the structure of the same cluster of nodes within the molecular network. The untargeted strategy was verified using commercial standard samples under the same mass spectrometry conditions.ResultsThe proposed integrated targeted and untargeted strategy was successfully applied to the comprehensive profiling of the chemical constituents of aqueous and ethanol extracts of A. chinensis. A total of 124 compounds such as fatty acids, nucleosides, amino acids, and peptides, including 74 compounds that were reported for the first time, were identified in this study.ConclusionsThe integrated strategy using LC tandem HRMS combined with molecular networking could be popularised for the comprehensive profiling of chemical constituents of other traditional insect medicines.     

The role of hypoxia inducible factor-1α in the increased MMP-2 and MMP-9 production by human monocytes exposed to nickel nanoparticles

Nickel is an important economic commodity, but it can cause skin sensitization and may cause lung diseases such as lung fibrosis, pneumonitis, bronchial asthma and lung cancer. With development of nanotechnology, nano-sized nickel (Nano-Ni) and nano-sized titanium dioxide (Nano-TiO?) particles have been developed and produced for many years with new formulations and surface properties to meet novel demands. Our previous studies have shown that Nano-Ni instilled into rat lungs caused a greater inflammatory response as compared with standard-sized nickel (5 μm) at equivalent mass concentrations. Nano-Ni caused a persistent high level of inflammation in lungs even at low doses. Recently, several studies have shown that nanoparticles can translocate from the lungs to the circulatory system. To evaluate the potential systemic effects of metal nanoparticles, we compared the effects of Nano-Ni and Nano-TiO? on matrix metalloproteinases 2 and 9 (MMP-2 and MMP-9) gene expression and activity. Our results showed that exposure of human monocyte U937 to Nano-Ni caused dose- and time- dependent increase in MMP-2 and MMP-9 mRNA expression and pro-MMP-2 and pro-MMP-9 activity, but Nano-TiO? did not. Nano-Ni also caused dose- and time- related increase in tissue inhibitor of metalloproteinases 1 (TIMP-1), but Nano-TiO? did not. To determine the potential mechanisms involved, we measured the expression of hypoxia inducible factor 1α (HIF-1α) in U937 cells exposed to Nano-Ni and Nano-TiO?. Our results showed that exposure to Nano-Ni caused HIF-1α accumulation in the nucleus. Furthermore, pre-treatment of U937 cells with heat shock protein 90 (Hsp90) inhibitor, 17-(Allylamino)-17-demethoxygeldanamycin (17-AAG), prior to exposure to Nano-Ni significantly abolished Nano-Ni-induced MMP-2 and MMP-9 mRNA upregulation and increased pro-MMP-2 and pro-MMP-9 activity. Our results suggest that HIF-1α accumulation may be involved in the increased MMP-2 and MMP-9 production in U937 cells exposed to Nano-Ni.     

盆底功能康复技术对防治产后女性压力性尿失禁的作用研究

目的探究盆底功能康复技术对防治产后女性压力性尿失禁的作用。方法选取2009年2月～2010年2月在本院分娩的产妇178例,随机分为两组。其中治疗组89例采取专门的盆底功能康复技术对产妇进行治疗,时间为8周。而对照组89例采取一般措施,主要是产后健康教育,时间也是8周。产后16周对两组产妇进行随访,主要通过问卷调查的方式进行分析盆底功能康复技术对防治产后女性压力性尿失禁的作用。结果通过两组的调查对比分析,其中治疗组在产后出现压力性尿失禁的发生率明显低于对照组。结论盆底功能康复技术对防治产后女性出现压力性尿失禁有着极大的帮助,但是其长期的疗效还需要进一步的观察。     

复方丙谷胺西咪替丁片溶出度测定方法的研究

目的：确定复方丙谷胺西昧替丁片溶出度测定的方法。方法：采用转篮法，以磷酸盐缓冲液（pH7．2）为溶出介质，转速100r·min^-1，高效液相法检测。结果：45分钟的溶出量不少于70％，三种主要成分丙谷胺、西咪替丁、尿囊素分别在120～280μg／ml；58．4～136．4μg／ml；65．3～153．7μg／ml范围内呈现良好的线性关系。结论：本方法操作简单，准确可靠，能满足质量控制的要求。     

A new isoquinolinone derivative with noble vasorelaxation activity

The pharmacological effects of BDPBI (7-bromo-1,4-dihydro-2-phenyl-4,4-bis(4-pyridinylmethyl)2H-isoquinolin-3-one dihydrochloride) were tested on isolated endothelium-containing or denuded aorta of the guinea pig. BDPBI with the formula C(27)H(24)BrCl(2)N(3)O was synthesized starting with 3-isochromanone. In the endothelium-containing preparations of the aortic rings, phenylephrine (PHE; 10 micromol/l) elicited contracture and acetylcholine (ACh; 10 micromol/l) or BDPBI (0.01-10 micromol/l) elicited relaxation effects on the PHE-precontracted preparations. The BDPBI-elicited effect on the PHE-precontracted aortic rings was not altered in the presence of adrenergic blockers (propranolol or yohimbine; 1 micromol/l) or pretreated preparations with aspirin, indomethacin (10 micromol/l) or L-NAME (1 mmol/l). However, the relaxation effects of BDPBI were blocked if the preparations were pretreated with diphenhydramine (10 micromol/l) or chloropheniramine maleate (10 micromol/l). In contrast to lower concentrations of atropine (1 micromol/l), higher concentrations of atropine (30 micromol/l) did block the effects of BDPBI on the PHE-precontracted aortic rings. HTMT dimaleate (0.01-10 micromol/l), a histamine H(1) receptor agonist, also elicited relaxation effects on the PHE-precontracted preparation, and the effects were blocked if the preparations were pretreated with diphenhydramine or chloropheniramine maleate. On isolated denuded aorta of the guinea pig, BDPBI did not elicit relaxation effects on the PHE-precontracted aortic rings. These results demonstrated that the vasorelaxation effect of BDPBI on PHE-precontracted aortic rings is partly dependent on the activation of a histaminergic receptor from the vascular endothelium. We suggested that BDPBI would be an effective vasorelaxant for cardiovascular systems.     

补肾通络法治疗38例肺纤维化的临床分析

目的:探讨补肾通络法治疗肺纤维化的临床效果。方法:回顾采用补肾通络法治疗38例肺纤维化的临床资料。结果:临床症状改善明显。结论:补肾通络法是治疗肺纤维化的有效方法。     

桂利嗪分散片溶出度测定的研究

采用紫外分光光度法对桂利嗉分散片溶出度进行了测定。结果显示 ,本品 3批 3 min平均溶出量均超过标示量的 80 % ,提示该方法用于桂利嗪分散片的溶出度的测定快速简便、结果满意。