Functional and psychosocial impact of COVID-19 pandemic on rheumatic patients’ quality of life in Saudi Arabia

Quality of Life Research - The COVID-19 pandemic might add to the stressors experienced by people living with rheumatic diseases. This study aimed to examine rheumatic patients’ functional...     

10-MDP-钙盐形成对牙本质粘接成绩影响的评价

目的　分析10-MDP-钙盐形成对牙本质粘接成绩的影响。方法　采用酸蚀冲洗粘接模式，根据牙本质表面的处理方式和选择粘接剂的不同将牙齿随机分为以下4组（n=5）进行处理，制作牙本质/树脂粘接试件：①对照组，直接使用全酸蚀粘接剂Single bond 2(SB2)处理后粘接；②10-MDP组，使用SB2处理进行粘接前，牙本质表面以含有磷酸酯单体10-MDP的自配底涂剂预处理；③CHX组，使用SB2处理进行粘接前，先以氯己定（CHX）预处理牙本质表面;④SBU组，使用包含10-MDP的通用型粘接剂Single bond universal(SBU)处理后进行粘接。通过微拉伸测试（μTBS）测试粘接强度，以X射线衍射(XRD)、原位酶谱测试表征自配10-MDP底涂剂和两种牙本质粘接剂处理的牙本质表面，分析10-MDP-钙盐形成对牙本质粘接成绩的影响。结果　微拉伸结果显示，不同处理方式的粘接试件在24 h水储后没有表现出明显的统计学差异(P>0.1)；经过6个月的水储后，与10-MDP组和SBU组相比，对照组的微拉伸强度显著降低(P<0.05)，而CHX组的微拉伸强度没有明显变化(P>0.05)。XRD结果显示,在10-MDP组和SBU组均检测到10-MDP-钙盐形成的特征性峰，表明有10-MDP-钙盐的形成。原位酶谱结果显示，10-MDP组与SBU组之间混合层荧光强度没有明显区别，但均明显高于对照组，CHX组荧光强度低于10-MDP组与SBU组。结论　10-MDP-钙盐的形成能够保护暴露的胶原纤维不接触到MMPs而免于水解，从而增强牙本质/树脂的粘接成绩。     

Percutaneous renal mass biopsy: historical perspective,current status,and future considerations

Introduction: Percutaneous renal mass biopsy has evolved over the last decade with improvements on previous pitfalls including low tissue yield, high non-diagnostic rates, and complications. As understanding of tumor biology and natural history of renal cortical neoplasms has improved, percutaneous renal mass biopsy is poised to have an expanding role in an area characterized by individualized management and refined risk stratification.

Areas covered: This review summarizes the evolution of renal mass biopsy to its current state with respect to outcomes, indications, and clinical guidelines.

Expert opinion: With improved understanding of differential biological potential of renal cortical neoplasms combined with technical improvements in diagnostic yield and accuracy, utilization of renal mass biopsy is becoming an important adjunct to patient care in a broad range of clinical scenarios, including active surveillance, thermal ablation, and use of primary systemic therapy in localized and advanced settings.     

HPLC-MS Method for Simultaneous Quantitative Determination of an Innovative Russian Gestagen and its Metabolites in Rat and Rabbit Blood Sera

Pharmaceutical Chemistry Journal - An HPLC-MS method for simultaneous quantitative determination of a novel gestagenic pharmaceutical and two of its metabolites in rat and rabbit blood sera was...