Tei指数对高血压不同构型组心功能临床研究

目的评价心功能指标Tei指数在高血压患者各个不同构型组中的应用价值。方法对高血压组82例和正常对照组19例进行常规心脏超声、常规心脏收缩功能、心脏舒张功能指标及Tei指数测量。将原发性高血压划分为正常左室构型组Ⅰ、向心性重构组Ⅱ、向心性肥厚组Ⅲ、离心性肥厚组Ⅳ。结果(1)舒张功能:E/A值在Ⅰ、Ⅱ、Ⅲ组依次降低,Ⅳ组E/A反而增高,E/A>1。IVRT、EDT值高血压组各组间差异无显著意义。(2)收缩功能:EF、FS值在Ⅳ组才出现降低,SV和CO在Ⅰ和Ⅲ中无明显变化,Ⅱ减少,Ⅳ稍增加。(3)Tei指数高血压组较对照组皆增高,差异有显著意义。Ⅰ、Ⅱ、Ⅲ、Ⅳ组的Tei指数依次增高,除Ⅰ、Ⅱ组外,余各组之间差异有显著意义,Ⅳ组Tei值最高。结论Tei指数能早期发现反映整体功能的降低。这弥补了心脏舒张功能指标和收缩功能对高血压患者心功能评价的一些不足。     

Surface-engineered liposomes for dual-drug delivery targeting strategy against methicillin-resistant Staphylococcus aureus (MRSA)

This study focused on the encapsulation of vancomycin(VAN) into liposomes coated with a red blood cell membrane with a targeting ligand, daptomycin–polyethylene glycol–1,2-distearoyl-sn-glycero-3-phosphoethanolamine, formed by conjugation of DAPT and Nhydroxysuccinimidyl-polyethylene glycol-1,2-distearoyl-sn-glycero-3-phosphoethanolamine.This formulation is capable of providing controlled and targeted drug delivery to the bacterial cytoplasm. We performed MALDI-TOF, NMR and FTIR analyses to conf...     

Safety and feasibility of laparoscopic living donor right hepatectomy for adult liver transplantation: a meta-analysis

BackgroundLaparoscopic living donor right hepatectomy (LDRH) was a controversial topic due to its unknown safety and feasibility.MethodsPubMed, EMBASE and Cochrane Library databases were searched for studies comparing LDRH with open living donor right hepatectomy (ODRH), which were published between the date of database establishment and June 2020. Revman5.3 was used for statistical analysis.ResultsFourteen studies were included. For the donors, there was no significant difference in warm ischemic time, hospital stay, graft weight, hepatic arterial anomalies (HAA), hepatic vein anomalies (HVA), portal vein anomalies (PVA), biliary anomalies, bleeding, wound infection, severe complication rate and readmission rate. The estimated blood loss, incidence of complication, intra-abdominal fluid rate in the LDRH group were significantly lower than those in the ODRH group, while the operation time, time to remove liver in the LDRH group were significantly higher than those in the ODRH group. For the recipients, there was no significant difference in complication rate, bleeding, HAA, PVA, biliary anomalies, graft failure and mortality. The HVA rate in the LDRH group was significantly higher than that in the ODRH group.ConclusionLDRH is safe and feasible for adult living donor liver transplantation compared with ODRH and it can reduce intraoperative bleeding and postoperative complication in donors, which requires further verification by more multi-center comparative studies with large sample and high quality.     

Development and evaluation of a hearing aid manual in the Malay language

Objective: This study aimed to (a) translate a hearing aid (HA) manual into Malay language and revise the translated manual based on best practice guidelines; (b) compare the effectiveness of the translated and the revised Malay HA manuals in helping individuals to perform HA management tasks.

Design: Cross-sectional, randomised, single-blinded study.

Study sample: An Oticon-Dynamo HA manual was translated and revised based on best practice guidelines. Ninety participants aged 55?years and above participated in this study. They were randomly assigned into the control group (received translated manual) and the experimental group (received the revised translated manual). The Hearing Aid Management (HAM) test, which was developed in a previous study, was conducted to evaluate participant’s ability to perform HA management tasks using the translated and the revised version of Malay HA manual.

Results: The revised Malay HA manual had a lower reading grade level relative to the initial translated Malay HA manual. The ability to perform HA management tasks was better in the experimental group (mean = 12.2, SD = 1.15) versus the control group (mean = 8.7, SD = 2.11).

Conclusion: Further revision of existing HA manuals based on best practice guidelines is recommended to help individuals better manage their HAs.     

Evaluation of cytotoxic, oxidative stress, proinflammatory and genotoxic responses of micro- and nano-particles of dolomite on human lung epithelial cells A(549)

Dolomite is a natural mineral of great industrial importance and used worldwide, thus millions of workers are at risk of occupational exposure. Its toxicity is however, meagerly documented. In the present investigation, a dolomite powder obtained from its milling unit was analyzed by some standard methods namely, optical microscopy, transmission electron microscopy and dynamic light scattering. Results showed that dolomite powder contained particles of different shapes and size both microparticles (MPs) and nanoparticles (NPs), suggesting potential occupational exposure of these particles. An attempt was therefore, made to investigate dolomite toxicity in a particle size-dependent manner in human lung epithelial cells A(549). The comparative toxicity evaluation of MPs and NPs was carried out by assessing their effects on cell viability, membrane damage, glutathione, reactive oxygen species (ROS), lipid peroxidation (LPO), micronucleus (MN) and proinflammatory cytokines, namely tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6). These markers of cytotoxicity, genotoxicity and inflammation were assayed in cells exposed to MPs and NPs in a dose-and time-dependent manner. Invariably, their toxic effects were dose-and time-dependent while NPs in general were significantly more toxic. Notably, NPs caused oxidative stress, genotoxicity and inflammatory responses, as seen by significant induction of ROS, LPO, MN, TNF-α, IL-1β and IL-6. Thus, the study tends to suggest that separate health safety standards would be required for micrometer and nanometer scale particles of dolomite.     

新生儿脐带残端暴露游泳护理效果探讨

目的探讨脐带残端暴露游泳对新生儿脐部并发症和脐带残端脱落时间的影响。方法将358名正常新生儿分为两组各179名,观察组新生儿游泳时脐带残端直接暴露在水中,对照组新生儿脐带残端用脐贴保护。结果两组新生儿脐带残端脱落时间、脐部并发症发生率比较,差异有统计学意义(P<0.05,P<0.01)。结论新生儿采用脐带残端暴露游泳法,有利于脐带早干燥、早脱落,减少脐部并发症。