[Determination of polybrominated diphenyl ethers in marine sediments by composite chromatography column purification-gas chromatography-negative chemical ionization-mass spectrometry].

Polybrominated diphenyl ethers (PBDEs) are used as additive flame retardants. Because they lack the ability to form chemical bonds, PBDEs can easily enter the sediment environment. The accurate qualitative and quantitative analysis of PBDEs in sediments is of great importance for the accurate assessment of PBDE pollution in this environment.

Role of miR-128 in hypertension-induced myocardial injury.

The present study aimed to investigate the role and mechanism of micro RNA (miR)-128 in hypertension-induced myocardial injury. The peripheral blood of patients with hypertension was collected and the expression of miR-128 was detected using fluorescence reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Primary myocardial cells isolated from rat were cultured under conditions of hypoxia and glucose deprivation, and miR-128 expression was measured by RT-qPCR.

[Free vascularized popliteal artery cutaneous branch flap for repair of wound on foot and ankle].

Objective: To investigate the feasibility and effectiveness of free popi iteal artery cutaneous branch flap anastomosed with lateral tarsal artery and vein for the repair of wound on the foot and ankle by anatomical observation and clinical application.

Methods: Latex was poured into the blood vessels of 8 cadavers, then perforator vessel of posterolateral upper calf was dissected, and the popl iteal artery cutaneous branch flap was designed with a pedicle of 2.5 cm in length; the lateral tarsal artery of the foot was dissected, could be freed to 6 cm in length; the diameter of these vessels was measured, and the number of the accompanying veins was counted.