BMP9 Reduces Bone Loss in Ovariectomized Mice by Dual Regulation of Bone Remodeling

Bone remodeling is dynamic and is tightly regulated through bone resorption dominated by osteoclasts and bone formation dominated by osteoblasts. Imbalances in this process can cause various pathological conditions, such as osteoporosis. Bone morphogenetic protein 9 (BMP9), a biomolecule produced and secreted by the liver, has many pharmacological effects, including anti-liver fibrosis, antitumor, anti-heart failure, and antidiabetic activities. However, the effects of BMP9 on the regulation of osteoblast and osteoclast functions and the underlying molecular mechanism(s) have not yet been investigated. In this study, BMP9 increased the expression of osteoblastogenic gene markers, such as ALP, Cola1, OCN, RUNX2, and OSX, and ALP activity in MC3T3-E1 cells by upregulating LGR6 and activating the Wnt/β-catenin pathway. BMP9 also suppressed receptor activator of nuclear factor-κB (NF-κB) ligand (RANKL)-induced osteoclast differentiation of bone marrow macrophages (BMMs) by inhibiting the Akt-NF-κB-NFATc1 pathway. More importantly, in an ovariectomy (OVX) mouse model, BMP9 attenuated bone loss and improved bone biomechanical properties in vivo by increasing bone-forming activity and suppressing bone resorption activity. Accordingly, our current work highlights the dual regulatory effects that BMP9 exerts on bone remodeling by promoting bone anabolic activity and inhibiting osteoclast differentiation in OVX mice. © 2020 American Society for Bone and Mineral Research.     

Male age is more critical to sperm DNA integrity than routine semen parameters in Chinese infertile males

This retrospective study evaluated the correlation between the sperm DNA integrity results and infertile male age or sperm motility in 654 infertile men undergoing infertility evaluations from 2013 to 2016. The correlation between the results of sperm DNA integrity and male age was positive, while a negative correlation was detected between sperm DNA integrity and sperm motility in all subjects. According to age (≤30, 30–35 and ≥35), men with normozoospermia or abnormal semen parameters were, respectively, divided into groups 1, 2 and 3, or groups A, B and C. The sperm DNA fragmentation index (DFI) and DFI abnormality rates in groups 3 and C were highest among their respective cohorts. But they were not significantly different between groups within the same age range. Statistically significant differences were found in male age, progressive motility, as well as total motility between patients with normal DFIs and those with abnormal DFIs in group C, but not in group 3. Older (≥35 years) infertile men have increased sperm DNA fragmentation, independent of conventional semen parameters. Male age is more critical to sperm DNA integrity than routine semen parameters.     

二代测序技术应用于脑脊液检测在结核性脑膜炎中的早期诊断价值

目的评价二代测序技术应用于脑脊液检测在结核性脑膜炎（TBM）患者中的早期诊断价值。 方法前瞻性纳入2018年2月2日至2018年8月2日于山东省胸科医院就诊的临床怀疑TBM的患者共50例,并跟踪随访其诊疗结局。送检脑脊液标本均进行二代测序,测序所得原始序列与病原微生物数据库进行对比得到最终结果。二代测序结果以检测到结核分枝杆菌复合群唯一比对序列为阳性,未检测到唯一比对序列为阴性。以符合脑脊液结核分枝杆菌培养阳性、涂片阳性、Xpert MTB/RIF检测阳性及结核分枝杆菌核酸检测阳性等4项中至少1项即为确诊TBM患者;临床可疑TBM且抗结核治疗有效为临床诊断患者;有其他病原学依据或临床排除TBM者为非TBM患者。分析二代测序在TBM早期诊断中的敏感性和特异度。 结果确诊为TBM患者22例中Xpert MTB/RIF检测阳性13例,培养阳性6例,结核分枝杆菌核酸PCR检测阳性5例,临床诊断为TBM患者12例,非TBM患者16例。在确诊及临床诊断患者中,二代测序技术检测到结核分枝杆菌复合群系列20例,敏感性为58.8%（20/34）,特异度为100%（16/16）。在确诊患者中,二代测序的敏感性为63.6%（14/22）;在同步进行结核分枝杆菌培养、Xpert MTB/RIF检测与二代测序的50例标本中,以临床诊断为标准,3种方法的特异度均为100%（16/16）;传统方法、Xpert MTB/RIF检测及二代测序的敏感性分别为29.4%（10/34）、38.2（13/24）和58.8（20/34）,前两种检测方法与二代测序敏感性差异均有统计学意义（McNemar检验：χ² = 8.333、P = 0.013,χ² = 8.333、P = 0.065）。传统方法与二代测序联合检测的敏感性高达82.4%（28/34）。 结论二代测序技术能够较快速地检测脑脊液中的结核分枝杆菌复合群,且其敏感性和特异度均较高,可作为TBM的早期诊断指标。二代测序联合传统检测方法可提高检出率。     

早产儿母亲积极感受与健康素养的相关性分析

目的 了解早产儿母亲积极感受及围生期健康素养现状,并探讨两者的相关性,为促进围生期母婴健康提供参考。方法 选 取5所三级甲等综合医院和2所三级甲等专科医院 NICU 住院的2836例早产儿及其母亲,采用一般情况调查表、照顾者积极感 受量表(PAC)、围生 期 健 康 素 养 量 表 进 行 调 查。结 果 早 产 儿 母 亲 积 极 感 受 总 分 为(29.85±4.21)分,围 生 期 健 康 素 养 总 分 (182.45±13.16)分,具备健康素养者占41.75%;早产儿母亲积极感受与围生期健康素养呈正相关(r=0.804,P<0.01)。结论 早产儿母亲在照顾早产儿过程中感受积极,而良好的健康素养是积极感受的促进因素。家庭及医护人员应提高孕产妇围生期健 康素养,从而提高其积极感受,以促进母婴健康。     

BCAN基因在肾透明细胞癌中的表达及临床意义

目的以基因表达数据集资料为研究对象,分析BCAN基因在肾透明细胞癌中的表达情况以及对患者预后的影响。方法在Oncomine数据库中挖掘BCAN在肾透明细胞癌(ccRCC)中的表达情况。从TCGA数据库中获取ccRCC患者临床资料和目的基因的表达信息并进行统计分析。利用GEO数据库中GSE73731数据集的ccRCC样本进行基因富集分析。利用String数据库分析与BCAN相关的蛋白。结果BCAN低表达组的ccRCC患者在病理分期及T分期方面低于高表达组(P<0.001;P=0.001);N分期及M分期差异无统计学意义(P>0.05)。BCAN低表达组患者的总生存期优于高表达组(P=0.033)。BCAN基因高表达组的样本主要富集在KRAS信号通路。结论BCAN可以通过多种途径来促进肿瘤细胞的侵袭能力,有望成为ccRCC不良预后的重要生物标志物之一。     

显微精索静脉结扎手术联合少腹逐瘀汤治疗精索静脉曲张致少弱精子症

目的探讨保留动脉的显微精索静脉结扎术联合少腹逐瘀汤治疗精索静脉曲张(VC)致少弱精子症的临床疗效。方法选取50例精索静脉曲张性不育患者,随机分成观察组和对照组各25例,治疗组给予显微精索静脉结扎手术联合少腹逐瘀汤,日服一剂,分早晚服,连续服用3个月;对照组只行显微精索静脉结扎手术。结果两组患者均手术成功,术后症状消失,精子浓度、精液量、精子活力明显提高,畸形精子百分率明显降低,较手术前比较,差异有统计学意义(P<0.05)。而观察组3个月后患者各项精液参数改善显著,明显优于对照组(P<0.05)。结论显微精索静脉结扎手术联合少腹逐瘀汤治疗精索静脉曲张所致少弱精子症疗效满意,精液质量改善明显。     

新型冠状病毒肺炎疫情防控中方舱医院的护理应急综合管理

目的总结新型冠状病毒肺炎防控中方舱医院护理应急综合管理方法。方法迅速组建护理应急管理团队,实施护理应急综合管理,包括统筹管理分组实施,建章立制优化流程,设置岗位明确职责,护理安全管理(保障患者安全管理、联合协作病区安全管理、护士职业防护安全管理),患者心理应激干预及救援护士心理危机干预。结果自2020年2月5日开舱至3月9日休舱,收治患者1 848例,转院521例,出院1 327例;核酸标本采集5 020例次;无医护人员职业暴露感染。结论通过规范和因地制宜的管理策略,精准实施各项护理工作,保证了方舱医院患者集中隔离和救护工作的有序、安全、高效开展。     

强脉冲光治疗雀斑的临床探讨

目的:探讨强脉冲光对面部雀斑的治疗效果.方法:采用强脉冲光治疗仪波长为560nm～1 200nm滤光片治疗181例面部雀斑病变患者,治疗4次～5次,每次时间间隔为3周,每位患者进行对比拍照、记录参数并进行临床疗效评估.结果:181例雀斑患者的显效率为:99.44%(180/181).结论:强脉冲光对雀斑有良好的疗效.     

Effects of Placental Isoferritin on the Mouse Embryo Development in vitro

To investigate the effect of placental isoferritin （PLF） on mouse embryo development in vitro, mice 2-cell embryos were co-cultured with human first trimester decidual cells at different concentrations of PLF in vitro. The following changes of the above system were observed under an invert microscope and the number of embryos were recorded and the embryos were classified. The results showed there was no significant difference in the percentage of embryos development to 4-cell 8-cell and morula （P〉0.05）. PLF at the doses of 10 and 100 U/mL significantly enhanced more embryos development to the blastocyst and hatching blastocyst （P〈0.05）. PLF at the dose of 1000 U/mL depressed more embryos development from 2-cell to hatching blastocyst, meanwhile such phenomena as cell degeneration and irregular cleavage were observed in part of embryos, but there was no significant difference in statistics （P〉0.05）. It was concluded that PLF at the concentration of 10-- 100 U/mL had no significant effects on the early development of mice embryos, however, PLF could promote the growth, differentiation, and hatching of preimplantion blastocysts.     

电子病案法律效力的探讨

本文探讨了电子病案法律价值的影响因素。提出体现EMR法律价值必须解决系统的规范化管理设计、对EMR的时限管理设计、保留修改痕迹的设计、警示功能设计、电子签名设计。同时要制定质量及安全管理制度,这样才能较好地体现EMR法律效力和价值。