HMB对终末期肾病血液透析患者钙磷代谢紊乱的疗效观察

目的 观察和评价对血液净化的终末期肾病患者使用β-羟基-β-甲基丁酸(HMB)对其钙磷代谢紊乱的治疗效果.方法 选取2018年3月至2019年8月在成都市第五人民医院接受血液透析治疗的64例终末期血透肾病患者作为研究对象,采用随机对照设计,将其分为试验组与对照组,每组32例.两组均采用常规血液净化治疗,试验组予以HMB...     

Relationship Between Vitamin D Level and Mortality in Adults With Psoriasis: A Retrospective Cohort Study of NHANES Data

PurposeStudies have shown an increased risk for mortality in patients with psoriasis. Furthermore, research has demonstrated an inverse relationship between 25-hydroxyvitamin D (25[OH]D) level and all-cause mortality. This study investigated the association between 25(OH)D level and all-cause mortality in US adults with psoriasis.MethodsData from NHANES (1999–2014 and mortality data through December 31, 2015) were analyzed. Quartiles of 25(OH)D level were created based on 25(OH)D levels among patients. Cox proportional hazards models were used for estimating hazard ratios (95% CI) for all-cause mortality.FindingsA total of 82,091 participants were enrolled in the NHANES study from 1999 to 2014. Overall, 610 patients with psoriasis were identified in NHANES. The mean (SD) duration of follow-up was 5.61 (3.38) years (3427.92 person-years). The hazard ratio for mortality in the fully adjusted model was 0.12 (95% CI, 0.02–0.60; P_trend = 0.01) in patients with a high 25(OH)D concentration compared to those with 25(OH)D deficiency.ImplicationsThe 25(OH)D concentration was significantly inversely associated with all-cause mortality among these patients with psoriasis. Studies have shown an increased risk for mortality in patients with psoriasis compared to the general population. Vitamin D is not regularly metabolized in patients with psoriasis due to their skin abnormality. Vitamin D supplementation has been associated with a reduced mortality in patients with psoriasis. In practice, attention to vitamin D level is crucial, as is the use of vitamin D supplementation, for improving the health of these patients.     

An improved synthesis of [phenyl‐14C(U)] Lawsone

Synthesis of ¹⁴C‐labelled Lawsone or 2‐hydroxy‐1,4‐naphthoquinone was achieved by auto‐oxidation of [phenyl‐¹⁴C(U)]α‐tetralone; the latter was prepared from [¹⁴C(U)] benzene in a reaction sequence more convenient than reported earlier. Copyright © 2002 John Wiley & Sons, Ltd.     

应用人工神经网络研究2-羟基-〔1H〕-异吲哚二酮衍生物构效关系

以人工神经网络误差反传算法对２羟基〔１Ｈ〕异吲哚二酮衍生物构效关系进行了探讨，获得了精密的拟合和准确的预测，拟合结果优于多元线性回归．该方法可作为一种有效的定量构效关系研究工具．     

Bisacylphosphonates Inhibit Hydroxyapatite Formation and Dissolution in Vitro and Dystrophic Calcification in Vivo

Some geminal bisphosphonates are used clinically for a number of important bone/calcium related diseases; however, side effects and lack of selectivity impede their wide use. This work reports the synthesis and evaluation of bisacylphosphonates (e.g., adipoyl- and suberoylbisphosphonate). These compounds were found to inhibit significantly hydroxyapatite formation and dissolution in vitro and the calcification of bioprosthetic tissue implanted subdermally in rats. These are the first instances of nongeminal bisphosphonates [P–(C)n– P, n 2] that have been reported to be active in calcium-related disorders. The reported bisacylphosphonates possess apparent lower toxicity, and their calcium complexes/salts have improved solubility properties. Therefore, they are of potential importance for clinical applications.     

Vitamin D deficiency is not related to eating habits in children with Autistic Spectrum Disorder

Background and aimsAutism Spectrum Disorder (ASD) is characterized by the impairment of communication and social interaction and by repetitive, restricted and stereotyped interests. ASD is often accompanied by comorbidities; eating disorders are frequent and imply important nutritional deficits (i.e. deficiencies of vitamins, minerals and fatty acids). Vitamin D has a critical role in neurodevelopment and serum levels in ASD are reported inadequate. A useful reference for setting up a correct diet in childhood is the food pyramid, which is inspired by the Mediterranean Diet (MD). The MD guarantees an intake of nutrients, considered optimal to maintain an adequate nutritional status. The aim of this study is to explore serum levels of Vitamin D and food habits (through MD adherence) in a sample of children with ASD and evaluate a possible correlation between these factors.Methodsstudy participants include 91 children 47 presenting ASD and 44 healthy typically-developing (TD) subjects, as control group. We evaluated serum level of Vitamin D in both group; anthropometric parameters (weight, height, body mass index—BMI—and growth percentile) and MD adherence have been explored, in order to investigate the correlation among those data and level of Vitamin D in children with ASD. Lastly, the association between Vitamin D levels and severity of ASD symptoms has been analysed.Results and conclusion74% of ASD group presented blood levels of Vitamin D under 30 ng/ml (normal range 30–100 ng/ml). The analysis performed showed that the two groups were significant different regards Vitamin D levels (t = 2.24, p < 0.05), according to literature. 31.9% of children with ASD presented a condition of overweight and 12.6% a condition of obesity. Adherence to the MD was low in 25.5% of cases. No significant statistical correlation has been found between Vitamin D serum levels, anthropometric parameters and the adherence to MD in the ASD group.     

Combined liver‐kidney transplantation for primary hyperoxaluria type I in children: Single Center Experience

Primary hyperoxalurias are rare inborn errors of metabolism with deficiency of hepatic enzymes that lead to excessive urinary oxalate excretion and overproduction of oxalate which is deposited in various organs. Hyperoxaluria results in serious morbid‐ity, end stage kidney disease (ESKD), and mortality if left untreated. Combined liver kidney transplantation (CLKT) is recognized as a management of ESKD for children with hyperoxaluria type 1 (PH1). This study aimed to report outcome of CLKT in a pediatric cohort of PH1 patients, through retrospective analysis of data of 8 children (2 girls and 6 boys) who presented by PH1 to Wadi El Nil Pediatric Living Related Liver Transplant Unit during 2001‐2017. Mean age at transplant was 8.2 ± 4 years. Only three of the children underwent confirmatory genotyping. Three patients died prior to surgery on waiting list. The first attempt at CLKT was consecutive, and despite initial successful liver transplant, the girl died of biliary peritonitis prior to scheduled renal transplant. Of the four who underwent simultaneous CLKT, only two survived and are well, one with insignificant complications, and other suffered from abdominal Burkitt lymphoma managed by excision and resection anastomosis, four cycles of rituximab, cyclophosphamide, vincristine, and prednisone. The other two died, one due to uncontrollable bleeding within 36 hours of procedure, while the other died awaiting renal transplant after loss of renal graft to recurrent renal oxalosis 6 months post‐transplant. PH1 with ESKD is a rare disease; simultaneous CLKT offers good quality of life for afflicted children. Graft shortage and renal graft loss to oxalosis challenge the outcome.     

Expression of 8‐hydroxy‐2′‐deoxyguanosine in chronic liver disease and hepatocellular carcinoma

Abstract: Reactive oxygen species may be involved in the progression of chronic liver disease and the occurrence of hepatocellular carcinoma (HCC). To clarify whether clinicopathological findings in liver diseases are related to oxidative DNA damage, hepatic expression of the 8‐hydroxy‐2′‐deoxyguanosine (8‐OHdG) was examined in 75 liver disease patients, which included 32 chronic hepatitis (CH), 13 liver cirrhosis (LC) and 30 HCC patients. The CH patients had higher 8‐OHdG‐positive hepatocytes than LC (P<0.05). In CH and LC, the number of 8‐OHdG‐positive hepatocytes was correlated with alanine aminotransferase and asparate aminotransferase (P<0.01 and P<0.05, respectively). Of 30 HCC cases, 25 cases (83%) showed stronger immunoreactivity than non‐cancerous counterparts. The patients with poorly differentiated HCC had a larger tumor size and higher levels of AFP, and exhibited higher labeling indices of PCNA‐, TUNEL‐ and 8‐OHdG‐positive cells than those with well and moderately differentiated HCC. Our findings suggest that oxidative DNA damage is increased in association with necroinflammation in chronic liver disease and determination of 8‐OHdG is useful in assessing high‐grade malignancy in HCC.