ABSTRACT
Objective:To analyze the expression and clinical significance of serum microRNA-221 (miR-221) and microRNA-127 (miR-127) levels in children with severe pneumonia.Methods:151 children with severe pneumonia treated in Handan Central Hospital from January 2017 to December 2019 were prospective selected as severe pneumonia group. According to the prognosis of children in hospital, they were divided into death group (16 cases) and survival group (135 cases). Another 80 healthy children who underwent physical examination in our hospital during the same period were selected as normal control group. Microarrays were used to analyze the expression of miRNAs in the severe pneumonia group and the normal control group, and the miRNAs with the most significant up-regulation or down-regulation (based on the difference expression change ≥2 times threshold and P<0.05) were selected. The serum miR-221, miR-127 and inflammatory factor [C-reactive protein (CRP), calcitonin (PCT) and interleukin 6 (IL-6), interleukin 8 (IL-8), tumor necrosis factor-α (TNF-α)] levels were detected in the enrolled subjects. The correlation between serum miR-221 and miR-127 and the above inflammatory indicators in severe pneumonia group were analyzed. The diagnostic value and prognostic value of miR-221 and miR-127 in severe pneumonia were analyzed by receiver operating characteristic (ROC) curve. Results:The serum levels of miR-221 and miR-127 in severe pneumonia group were lower than those in normal control group, while the serum levels of CRP, PCT, IL-6, IL-8 and TNF-α were higher than those in the normal control group (all P<0.05). Serum miR-221 was negatively correlated with CRP, PCT, TNF-α (all P<0.05); Serum miR-127 was negatively correlated with CRP, PCT, IL-6 and IL-8 (all P<0.05). The serum levels of miR-221 and miR-127 in the death group were lower than those in the survival group ( P<0.05). The area under the curve (AUC) of miR-221 and miR-127 for the combined diagnosis of severe pneumonia was 0.871, and the AUC for the prognosis of severe pneumonia was 0.851. Conclusions:The serum levels of miR-221 and miR-127 in children with severe pneumonia decreased, which was negatively correlated with the levels of some inflammatory factors. The combined detection of miR-221 and miR-127 has high clinical value in the diagnosis and prognosis prediction of severe pneumonia.
ABSTRACT
Objective To investigate the correlation between postmenopausal estrogen levels and diabetic retinopathy in patients with type 2 diabetes.Methods Two hundred cases of postmenopausal type 2 diabetes admitted to the Eighth Affiliated Hospital,Sun Yat-sen University from January 2015 to January 2017 were selected as the subjects and divided into the retinopathy group (93 cases) and the normal retina group (107 cases) according to the resuhs of fundus angiography.The general data of the two groups were compared,and the blood glucose index,blood lipid index and estrogen level were measured and compared.Logistic regression analysis was used to analyze the related factors of the patients with retinopathy.Results (1) The disease duration of patients in the retinopathy group was longer than that in the normal retina group ((14.67 ±3.48) years vs.(10.20±2.85) years;t=9.983,P＜0.05).The fasting blood glucose (FBG),glycosylated hemoglobin of patients in the retinopathy group were higher than those in the normal retina group (FBG:(8.01 ± 1.21) mmol/L vs.(6.93 ± 1.20) mmol/L,FBG:(8.32 ± 1.56) mmol/L vs.(7.39 ± 1.43) mmol/L;t =6.324,4.397,P＜0.05).The total cholesterol (TC),triglyceride (TG) and low density lipoprotein (LDL-C) of patients in the retinopathy group were higher than those in the normal retina group [TC:(4.93±0.87) mmol/ Lvs.(4.23± 0.69) mmol/L,TG:(1.91 ± 0.42) mmol/L vs.(1.63 ± 0.32) mmol/L,LDL-C:(2.61 ± 0.90) mmol/L vs.(1.78±0.53) mmol/L;t =6.340,5.340,8.067,P＜0.05],while high density lipoprotein (HDL-C) was lower than that in the normal retina group ((1.23±0.37) mmol/L vs.(1.76±0.45) mmol/L;t =9.014,P ＜0.05).The E2 level in the retinopathy group was lower than that in the normal retina group ((23.91 + 8.51) ng/L vs.(32.18 + 9.80) ng/L;t=6.325,P＜0.05).Logistic regression analysis showed that the duration of diabetes,FBG,HbAlc,TC,TG and LDL-C were risk factors of retinopathy (OR (95％ CI) =1.049 (1.011 ～ 1.056),1.071(1.061 ～ 1.093),1.092(0.984～ 1.275),1.099(1.661 ～ 1.993),1.863(1.661 ～ 1.993),1.652 (1.461 ～ 1.893),P＜ 0.05),while HDL-C and E2 were protective factors of retinopathy (OR (95 ％ CI) =0.172(0.061 ～ 0.293),0.955 (0.861 ～ 1.093),P＜0.0S).Conclusion Estrogen level is related to retinopathy in postmenopausal diabetic patients.It may be a protective factor for diabetic retinopathy.