Effect of calcium dobesilate in preventing contrast-induced nephropathy in patients with diabetes and chronic kidney disease

OBJECTIVES: This study assessed the protective effect of calcium dobesilate against contrast-induced nephropathy (CIN) after coronary angiography (CAG) or percutaneous coronary intervention (PCI) in patients with diabetes and chronic kidney disease (CKD). METHODS: A total of 130 patients with diabetes and CKD estimated glomerular filtration rate: 30-90 mL/min/1.73m2 were enrolled and included in the analysis. They were divided into experimental (n=65) and control groups (n=65). Patients in the experimental group were administered oral calcium dobesilate (500 mg) three times daily for 2 days before and 3 days after the procedure. The serum creatinine (SCr), cystatin C (Cys C), and neutrophil gelatinase-associated lipocalin (NGAL) levels were measured before and after the procedure. RESULTS: The mean SCr level at 24h after the procedure was found to be significantly lower in the experimental group than in the control group (79.1±19.6 μmol/L vs. 87.0±19.3 μmol/L, p=0.023). However, the Cys C and NGAL levels were not significantly different between the two groups at all measurement time points (all p>0.05). The incidence of CIN defined by the SCr level was significantly lower in the experimental group than in the control group (3 [4.6%] vs. 13 [20.0%], p=0.017). However, the incidence of CIN defined by the Cys C level was not statistically different between the two groups (7 [10.8%] vs. 7 [10.8%], p=1.000). CONCLUSIONS: This study revealed that calcium dobesilate has no preventive effect against CIN in patients with diabetes and CKD.

Clinical significance of deubiquitinase UCHL5 expression in thyroid carcinoma and its relationship with malignant behaviors of carcinoma cells / 中国肿瘤生物治疗杂志

@#[Abstract] Objective: To explore the clinical significance and in vitro biological effect of ubiquitin carboxyl-terminal hydrolase L5 (UCHL5) expression in thyroid carcinoma (TC) tissues. Methods: TCGAdata were used to analyze the expression of UCHL5 in thyroid carcinoma tissues and its relationship with the prognosis of patients. 82 pairs of TC tissues and corresponding adjacent tissues were collected in the Department of Vascular and Thyroid Surgery, Sichuan Provincial People's Hospital from May 2018 to July 2019; TC cell lines (KTC-1 and WRO) were cultured in vitro, and transfected with UCHL5 overexpression vectors or their control vectors via lentivirus. The mRNAand protein expressions of UCHL5 and B-Raf proto-oncogene serine/threonine-protein kinase (BRAF) in tissues and cells were detected by qPCR and Western blotting, respectively. Cell proliferation was detected by CCK-8, and cell invasion and migration were detected by Transwell and Wound-healing experiments. Results: The expression of UCHL5 was low in TC tissues (P<0.01), and its expression was upregulated in tumor tissues with high TNM stage (P<0.01). The expression of UCHL5 was significantly correlated with BRAF expression and TNM stage of patients (all P<0.01), but not significantly related with patient's age, gender, pathological type and BRAF mutation (all P>0.05). In vitro overexpression of UCHL5 in KTC-1 and WRO cells could significantly promote BRAF expression, cell proliferation and metastasis (all P<0.01). Conclusion: The expression of UCHL5 is low in TC tissue, but upregulated with tumor progression. The high expression of UCHL5 in TC patients suggests poor prognosis. Meanwhile, UCHL5 can promote the malignant behaviors of TC cells in vitro.

Treatment of aortic dissecting aneurysm involving visceral arteries with multi-layer bare stents

SUMMARY OBJECTIVE: Aortic dissecting aneurysms involving visceral arteries are difficult for clinical treatment. This study aimed to explore the clinical efficacy and safety of multi-layer bare stents technique in the treatment of aortic dissecting aneurysms involving visceral arteries. METHOD: The clinical data of 16 patients of aortic dissecting aneurysm involving visceral artery treated with multi-layer bare stents technique from March 2013 to March 2017 in Tianjin Medical University General Hospital were retrospectively analyzed. To explore the clinical efficacy, the number of stents applied, postoperative aortic dissecting thrombosis and postoperative cumulative branch arterial patency of the16 patients. RESULTS: The operations of the 16 patients were successfully completed without peri-operative death cases. The 16 patients were implanted with 39 bare stents with an average of 2.44 per person. There were 2 cases with 1 stent, 8 cases with 2 stents and 7 cases with 3 stents. One month after the operation, CTA showed complete thrombosis in the arterial dissection in 4 cases (25.0%), partial thrombosis in 12 cases (75.0%); CTA showed that celiac artery, left and right renal arteries, and superior mesenteric artery were all unobstructed. There were 4 cases (25.0%) of dissecting artery with reduced diameter, 12 patients (75.0%) without changes in the diameter, and no diameter expanding cases. CONCLUSION: The treatment for aortic dissecting aneurysm involving the visceral arteries using multi-layer bare stents technique is safe and reliable with a higher patency rate of postoperative accumulated branch arteries.

RESUMO Objetivo: Aneurismas dissecantes da aorta envolvendo artérias viscerais são de difícil tratamento clínico. O objetivo deste estudo foi explorar a eficácia e segurança clínica da técnica de stents multicamadas não farmacológicos para o tratamento de aneurismas dissecantes da aorta envolvendo artérias viscerais. Métodos: Foi feito um estudo retrospectivo usando os dados de 16 pacientes com aneurisma dissecante da aorta envolvendo artérias viscerais e tratados com stents multicamadas não farmacológicos de março de 2013 a março de 2017, do Hospital da Escola de Medicina da Universidade de Tianjin. Foram analisados nos 167 pacientes: a eficácia clínica, o número de stents aplicados, trombose dissecante da aorta no pós-operatório e patência cumulativa pós-operatória do ramo arterial. Resultados: As operações dos 16 pacientes foram concluídas com sucesso sem nenhum óbito perioperatório. Os 16 pacientes receberam 39 stents não farmacológicos, com uma média de 2,44 por indivíduo. Houve 2 casos com 1 stent, 8 com 2 stents, e 7 com 3. Um mês após a operação, a ATC mostrou trombose completa da dissecção arterial em 4 casos (25,0%) e trombose parcial em 12 casos (75%). Também mostrou que a artéria celíaca, as artérias renais direita e esquerda e a artéria mesentérica superior estavam todas desobstruídas. Houve 4 casos (25,0%) de artéria dissecante com diâmetro reduzido, 12 (75,0%) pacientes sem alteração no diâmetro, e nenhum caso de aumento de diâmetro. Conclusão: O tratamento para aneurisma dissecante da aorta envolvendo artérias viscerais com a técnica de stents não farmacológicos multicamadas é seguro e confiável, com uma taxa mais alta de patência de ramos arteriais acumulados no pós-operatório.

Correlations between apparent diffusion coefficient in diffusion?weighted magnetic resonance imaging and molecular subtypes of invasive breast cancer masses / 南方医科大学学报

<p><b>OBJECTIVE</b>To study the correlation of apparent diffusion coefficient (ADC) measured by diffusion-weighted magnetic resonance imaging (MRI) with the molecular subtypes and biological prognostic factors of invasive breast cancer masses.</p><p><b>METHODS</b>Breast MRI data (including dynamic enhanced and diffusion-weighted imaging) were collected from 64 patients with pathologically confirmed invasive breast cancer masses (a total of 69 lesions). The mean ADC values of the lesions were calculated and their correlations were analyzed with the 5 molecular subtypes of invasive breast cancer and the biological prognostic factors including estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor 2 (HER2), and Ki-67 index.</p><p><b>RESULTS</b>The ADC values did not differ significantly among the 5 molecular subtypes of invasive breast cancer masses (P>0.05) or among lesions with different ER, PR, or HER2 status (P>0.05). The mean ADC values were significantly higher in Ki-67-positive lesions than in the negative lesions (P=0.023 and negatively correlated with the expressions of Ki-67 (r=-0.249).</p><p><b>CONCLUSION</b>ADC value can not be used to identify the molecular subtypes of invasive breast cancer masses or to evaluate the biological prognosis of the lesions, but its correlation with Ki-67 expression may help in prognostic evaluation and guiding clinical therapy of the tumors.</p>

Preliminary Analysis of Parkinson-like Motor Coordination Abnormityin Brain-specific hS100B Transgenic Mice / 中国医学科学院学报

Objective To investigate the role of S100B in the development of Parkinson's disease (PD) and explore the possibility of brain-specific S100B transgenic mice as PD animal model. Methods The hS100B transgenic mice were established. The mice were divided into S100B transgenic group (TG),S100B knockout group (KG),and the non-transgenic control group (CG). Motor coordination ability of mice was measured by the rota-rod and pole-climbing test. The expressions of S100B,dopamine D1 receptor,dopamine D2 receptor,G protein-coupled receptor kinase (GRK)2,GRK5,and tyrosine hydroxylase in brain tissue were detected by reverse transcription-polymerase chain reaction and Western blot. The levels of tyrosine,levodopa,dopamine,and homovanillic acid in brain tissue were measured by high-performance liquid chromatography coupled with fluorescence detection. Results Compared with CG,the S100B protein expression in brain tissue significantly increased in TG (P<0.05);the motor coordination ability of mice showed progressive decline (P<0.05);the mRNA and protein expressions of dopamine D2 receptor and GRK2 significantly decreased (P<0.05);the levels of levodopa,dopamine,and homovanillic acid were significantly elevated (P<0.05);the expression of tyrosine hydroxylase was also down-regulated,although there was no significant difference (P>0.05). Compared with CG,there was no obvious change of the above indicators in KG (all P>0.05). Conclusion S100B plays an important role in the motor coordination abnormity of PD. The brain-specific S100B transgenic mice can be used in research on the role of S100B gene in the development of PD.

Discrete potentials guided ablation for idiopathic outflow tract ventricular arrhythmias / 中华心血管病杂志

<p><b>OBJECTIVE</b>Discrete potentials (DPs) have been recorded and targeted as the site of ablation of the outflow tract arrhythmias. The aim of the present study was to investigate the significance of DPs with respect to mapping and ablation for idiopathic outflow tract premature ventricular contractions (PVCs) or ventricular tachycardias (VTs).</p><p><b>METHODS</b>Seventeen out of 24 consecutive patients with idiopathic right or left ventricular outflow tract PVCs/VTs who underwent radiofrequency catheter ablation between September 2012 and December 2013 in our department were included. Intracardiac electrograms during the mapping and ablation were analyzed.</p><p><b>RESULTS</b>During sinus rhythm, sharp high-frequency DPs that displayed double or multiple components were recorded following or buried in the local ventricular electrograms in all of the 17 patients, peak amplitude was (0.51 ± 0.21) mV. The same potential was recorded prior to the local ventricular potential of the PVCs/VTs. Spontaneous reversal of the relationship of the DPs to the local ventricular electrogram was noted during the arrhythmias. The DPs were related to a region of low voltage showed by intracardiac high-density contact mapping. At the sites with DPs, unipolar and bipolar ventricular voltage of sinus beats were lower compared with the adjacent regions without DPs (unipolar: (6.1 ± 1.8) mV vs. (8.3 ± 2.3) mV, P < 0.05; bipolar: (0.62 ± 0.45) mV vs. (1.03 ± 0.60) mV, P < 0.05). The targeted DPs were still present in 12 patients after successful elimination of the ectopies. Discrete potentials were not present in seven controls.</p><p><b>CONCLUSIONS</b>Discrete potentials and related low-voltage regions were common in idiopathic outflow tract ventricular arrhythmias. Discrete potential- and substrate-guided ablation strategy could help to reduce the recurrence of idiopathic outflow tract arrhythmias.</p>

Influence of low high density lipoprotein cholesterol level on kidney function in patients with coronary heart disease after PCI / 心血管康复医学杂志

Objective:To explore influence of low high density lipoprotein cholesterol (HDL‐C) level on kidney func‐tion in patients with coronary heart disease (CHD) after percutaneous coronary intervention (PCI) .Methods :A to‐tal of 300 CHD patients ,who were treated and received PCI in our hospital from Feb 2012 to Jun 2014 ,were select‐ed .According to HDL‐C level ,they were divided into normal HDL‐C level group (n=179 ,HDL‐C≥1. 04 mmol/L) and low HDL‐C level group (n= 121 ,HDL‐C< 1.04 mmol/L) .Baseline data were compared between two groups ,and multi‐factor Logistic regression analysis was used to analyze risk factors for kidney injury after PCI .Re‐sults:Compared with normal HDL‐C level group ,there were significant rise in percentages of overweight (30.73%vs .39.67% ) ,smoking history (29.05% vs .41.32% ) ,myocardial infarction history (35.20% vs .46.28% ) ,left ventricular ejection fraction (LVEF) <50% (18.99% vs .24.79% ) ,anemia (16.20% vs .27.27% ) and kidney in‐jury (12. 85% vs .22. 31% ) in low HDL‐C level group , P<0. 05 or <0. 01. Multi‐factor Logistic regression analysis indicated that age ,myocardial infarction history ,anemia ,LVEF<50% ,diabetes mellitus ,dosage of contrast agent and low HDL‐C level were risk factors for kidney injury in CHD patients after PCI (β=0.499~1.171 ,P<0.05 or<0.01) .Conclusion:Low HDL‐C level is a risk factor for renal function injury in CHD patients after PCI .

Detection of Ⅴ,Ⅲ and ⅠType Collagens of Dermal Tissues in Skin Lesions of Patients with Systemic Sclerosis and Its Implication / 华中科技大学学报（医学）（英德文版）

Summary: This study investigated the contents and distribution of collagen Ⅴ (Col Ⅴ) in skin lesions of the patients with systemic sclerosis (SSc) and its roles in the pathogenesis. The contents and distribution for al chain of collagen type Ⅰ,Ⅲ and [α1 (Ⅰ), α1 (Ⅲ) and α1 (Ⅴ)] in skin lesions of 36 patients with SSc (9 cases of mild fibrosis, 14 moderate, and 13 severe) were detected by using immunohistochemical SP method. Six cases of normal skin tissues served as controls. The results showed that there was diffuse distribution for three kinds of collagens in dennis. The deep staining α1 (Ⅰ) and α1 (Ⅲ) masses or bands were seen in reticular layer, while α1 (Ⅴ) was distributed more homogeneously. From control to weak, moderate and severe fibrosis stages, α1(Ⅰ), α1 (Ⅲ) and α1 (Ⅴ) showed a gradually increased trend in skin lesions (P<0.05). α1(Ⅴ) was obviously elevated in skin lesions at early stage and persisted in whole fibrotic process and risen in greater contents, while α1 (1) and α1(Ⅲ) were to go higher late and were apparently elevated at moderate and late stages. Compared with α1(Ⅰ), α1(Ⅴ) took leading increase at early stage in skin lesions (P<0.01), and had more elevated contents than α1 (Ⅲ) at moderate and late stages. The fibrotic changes in dermal reticular layer occurred earlier than those in papillary layer, and the abnormalities of α1 (Ⅴ)/ α1(Ⅰ) ratio appeared before α1 (Ⅲ)/α1 (Ⅰ) ratio. It was concluded that a lot of α1(Ⅴ) began to deposit in greater contents prior to α1 (Ⅰ) and α1(Ⅲ) at early stage in SSc and persisted in whole fibrotic process. The changes of α1(Ⅴ) contents in reticular layer occurred earlier than those in papillary layer, and it suggested that the fibrosis in reticular layer appeared earlier.