Analysis of visual acuity and macular edema in patients with diabetic retinopathy after laser treatment / 国际眼科杂志(Guoji Yanke Zazhi)

AIM:To analyze curative effect of laser treatment for diabetic retinopathy (DR).METHODS:A total of 100 patients (136 eyes) with DR who were admitted to our hospital during January 2015 to December 2016 were enrolled in the study.All patients were given 532nm laser treatment.Changes of visual acuity and the incidence of complications were statistically analyzed after treatment, and the macula central fovea retinal thickness and hemodynamic changes of affected eyes were compared before and after treatment.The effects of laser treatment were compared among patients with different types of diabetes, patients in different DR stages and patients with different glycosylated hemoglobin (HbAlc) levels.RESULTS:After treatment, the macula central fovea retinal thickness, end diastolic velocity (EDV), pulsatility index (PI) and central retinal artery (CRA), mean flow velocity (Vm) significantly decreased (P<0.05).After treatment, there were 2 cases (2 eyes) of bleeding and 2 cases (2 eyes) of tractional retinal detachment.The effective improvement rate of visual acuity was 83.1%.There were significant differences in the improvement rate of visual acuity among patients with different types of diabetes [type 1 (60.0%) vs type 2 (84.9%)], patients in different DR stages [preproliferative diabetic retinopathy (NPDR) 92.3%, early proliferative stage (PDR) 85.1%, high-risk PDR 54.2%] and patients with different HbAlc levels (< 8% 91.8% vs ≥8% 73.0%) (P<0.05).CONCLUSION:The 532nm laser treatment is effective for DR.It can significantly improve the retinal hemodynamics and visual acuity and relieve macular edema.Types of diabetes mellitus, stages of DR and blood glucose control effect may affect the effects of laser treatment.

Heijiangdan ointment relieves oxidative stress from radiation dermatitis induced by (60)Co γ-ray in mice / 中国结合医学杂志

<p><b>OBJECTIVE</b>To investigate the effects of Heijiangdan Ointment ( HJD) on oxidative stress in (60)Co γ-ray radiation-induced dermatitis in mice.</p><p><b>METHODS</b>Female Wistar mice with grade 4 radiation dermatitis induced by (60)Co γ-rays were randomly divided into four groups (n=12 per group); the HJD-treated, recombinant human epidermal growth factor (rhEGF)-treated, Trolox-treated, and untreated groups, along with a negative control group. On the 11th and 21st days after treatment, 6 mice in each group were chosen for evaluation. The levels of superoxide dismutase (SOD), malondialdehyde (MDA), and lactate dehydrogenase (LDH) were detected using spectrophotometric methods. The fibroblast mitochondria were observed by transmission electron microscopy (TEM). The expressions of fibroblast growth factor 2 (FGF-2) and transforming growth factor β1 (TGF-β1) were analyzed by western blot.</p><p><b>RESULTS</b>Compared with the untreated group, the levels of SOD, MDA and LDH, on the 11th and 21st days after treatment showed significant difference (P<0.05). TEM analysis indicated that fibroblast mitochondria in the untreated group exhibited swelling and the cristae appeared fractured, while in the HJD group, the swelling of mitochondria was limited and the rough endoplasmic reticulum appeared more relaxed. The expressions of FGF-2 and TGF-β1 increased in the untreated group compared with the negative control group (P<0.05). After treatment, the expression of FGF-2, rhEGF and Trolox in the HJD group were significantly increased compared with the untreated group (P<0.05), or compared with the negative control group (P<0.05). The expression of TGF-β1 showed significant difference between untreated and negative control groups (P<0.05). HJD and Trolox increased the level of TGF-β1 and the difference was marked as compared with the untreated and negative control groups (P<0.05).</p><p><b>CONCLUSION</b>HJD relieves oxidative stress-induced injury, increases the antioxidant activity, mitigates the fibroblast mitochondrial damage, up-regulates the expression of growth factor, and promotes mitochondrial repair in mice.</p>

Pathological basis of qi-deficiency and blood stasis syndrome in patients with non-small cell lung cancer viewing from tumor metastasis related factors / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To observe the expressions of tumor metastasis related factors (TMRF) in peripheral blood of patients with non-small cell lung cancer (NSCLC) for exploring the molecular mechanism for genesis of qi-deficiency and blood stasis (QDBS) syndrome in patients.</p><p><b>METHODS</b>Eighty selected NSCLC patients of stage II B/III were differentiated into the QDBS group and the non-QDBS group according to the Chinese medicine syndrome differentiation criteria, 40 in each group. The serum levels of vascular endothelial growth factor (VEGF), endostatin (ES) and soluble intercellular adhesive molecule-1 (slCAM-1) in patients were detected by ELISA, and the expression of adhesive molecule CD44 in peripheral blood was determined using flow cytometry.</p><p><b>RESULTS</b>Serum levels of VEGF (1002.78 +/- 312.08 ng/L), ES (120.88 +/- 20.00 microg/L), slCAM-1 (531.78 +/- 213.37 microg/L) and CD44 (136.65 +/- 29.60) were significantly higher in patients of QDBS group than in patients of non-QDBS group (653.18 +/- 318.99 ng/L, 98.29 +/- 23.92 microg/L, 409.36 +/- 167.65 microg/L and 98.46 +/- 20.64, respectively, P<0.01).</p><p><b>CONCLUSION</b>Objective inner links are found between the QDBS syndrome and TMRF in NSCLC patients; serum levels of VEGF, ES, slCAM-1 and CD44 can be served as the microcosmic basis for QDBS syndrome differentiation.</p>