Research progress in the timing of thoracic surgery after SARS-CoV-2 infection / 中国胸心血管外科临床杂志

@#Since the outbreak of COVID-19 pandemic, a large number of elective or limited operations, including tumor treatment, have been postponed. With the deepening of the understanding of the virus and the change of the prevention policy, the impact of the pandemic is gradually shrinking, and a large number of operations delayed by the pandemic will be rescheduled. However, there is no consensus on the best time to perform surgery for patients infected with SARS-CoV-2, and the consensus on thoracic surgery is more limited. This article reviews the research progress in the timing of surgical operations, especially thoracic surgery, after SARS-CoV-2 infection.

Correlation of imbalance of urinary exosome Th1/Th2 with diabetic nephropathy / 中华肾脏病杂志

Objective To examine the correlation of imbalance of urinary exosome Th1/Th2 with diabetic nephropathy (DN).Methods A total of 120 patients with type 2 diabetes mellitus (DM) and 30 healthy volunteers as control were enrolled in the study.According to urinary albumin/creatinine ratio (UACR),type 2 diabetes mellitus patients were divided into 3 groups:diabetes mellitus without nepbropathy group (DM,n=40,UACR＜30 mg/gCr),microalbuminuria group (DN 1,n=50,UACR-30～300 mg/gCr) and clinicoalbuminuria group (DN 2,n=30,UACR＞300 mg/gCr).Urine exosome-interferon-gamma (IFN-γ) and exosome-interleukin 4 (IL-4) levels were determined by enzyme-linked immunosorbent assay (ELISA).Multiple stepwise linear regression was used to analyze the correlation of exosome-IFN-γ/IL-4 with glycated hemoglobin (HbA1c),cholesterol (CH),UACR,Scr and BUN.Results Th1/Th2 ratio in DM,DN1,DN2 groups was significantly higher than that in healthy group (0.8089±0.2458,0.8993 ±0.3515,0.8571±0.2470 vs 0.6198±0.1769,all P＜0.01).Correlation analysis showed that urinary exosomeIFN-γ/IL-4 ratio was positively correlated with UACR (r=0.213,P=0.015) and BUN (r=0.292,P=0.001).Multiple stepwise linear regression analysis showed that BUN was independent determinants for exosome-IFN-γ/IL-4 (β=0.246,P=0.006).Conclusion The imbalance of urinary exosomeTh1/Th2 is correlated with DN,which may play an important role in the pathogenesis of DN.

Study on the relationship between the resting heart rate and target organ damage in elderly patients with metabolic syndrome / 中华老年医学杂志

Objective To investigate the relationship between the resting heart rate (RHR) and target organ damage (TOD) in elderly patients with metabolic syndrome(MS). Methods 264 elderly patients with MS were divided into four groups according to the level of RHR: RHR1 group, RHR<65 beats/minute (bpm) (46 cases) ;RHR2 group, 65≤RHR<75 bpm (77 cases);RHR3 group, 75 bpm≤RHR<85 bpm (89 cases);RHR4 group, RHR≥85 bpm (52 cases).Electrocardiography, echocardiography, carotid uhrasonography, crcatinine clearance rate (Ccr) and quantitative assay of 24 hours' albuminuria were performed. Results (1) Compared with RHR1, RHR2 and RHR3 groups, RHR4 group showed higher levels of carotid intima-medial thickness (IMT), carotid arterial diameter (CAD), left ventricular mass index (LVMI) and albuminuria(P< 0.05 or P<0.01), and lower levels of left ventricular ejection fraction (LVEF) and Ccr (all P< 0.01). (2) The IMT, CAD, LVMI and albuminuria were positively correlated with RHR (r=0.33, 0.23, 0.61, 0.58, respectively, all P<0.01). However, the LVEF and Ccr were negatively correlated with RHR (r=-0.59, -0.51, all P<0.01). (3) Logistic multivariate analysis showed that RHR and pulse pressure (PP) had effects on myocardial hypertrophy, coronary heart disease, heart failure, cerebral stroke and renal dysfunction(P<0.05 or P<0.01). Except heart failure, PP played a more important role than RHR. Coneinsions RHR may be an independent risk factors for TOD in elderly patients with MS,and RHR regulation is important for the development of MS in the elderly.

Clinical study on relationship between serum leptin concentration and type 2 diabetes mellitus with cerebral infarction / 临床神经病学杂志

Objective To investigate the relationship between serum leptin concentration and type 2 diabetes mellitus (DM) with cerebral infarction (CI). Methods Serum leptin concentrations were measured by enzyme-linked immunosorbent in 128 DM patients (65 male, 63 female and 62 lean, 66 obese and 63 complicated CI. Serum leptin concentration, triglyceride, total cholesterol, blood glucose, blood pressure, and body mass index (BMI) in CI were analyzed by correlation analysis. Results (1)The fast serum leptin concentrations in the obese individual were higher than that in the lean ( P