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Nicotinamide AND diabetes

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https://www.readbyqxmd.com/read/27862990/effects-of-ferric-citrate-supplementation-on-advanced-glycation-end-products-in-a-rat-model-of-streptozotocin-nicotinamide-induced-diabetes
#1
Kuo-Ching Chao, Seu-Hwa Chen, Chun-Chao Chang, Yu-Chieh Lee, Chi-Mei Wang, Jung-Su Chang
SCOPE: Diabetes is associated with increased risks of anemia and activation of advanced glycation end products (AGEs) and the receptor for AGEs (RAGE). However, the effects of pharmacological doses of iron supplementation on AGE metabolism are less clear. The aim was to investigate the effect of ferric citrate supplementation on AGE metabolism. METHODS AND RESULTS: Diabetes was induced in overnight starved rats by intraperitoneal injections of 40 mg/kg streptozotocin and 120 mg/kg nicotinamide...
November 10, 2016: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/27858887/glucose-6-phosphate-dehydrogenase-deficiency-and-risk-of-colorectal-cancer-in-northern-sardinia-a-retrospective-observational-study
#2
Maria P Dore, Agnese Davoli, Nunzio Longo, Giuseppina Marras, Giovanni M Pes
Glucose-6-phosphate dehydrogenase (G6PD) deficiency has been associated with a lower cancer risk, possibly via a reduction of mutagenic oxygen-free radicals and by reducing nicotinamide-adeninedinucleotide-phosphate for replicating cells. In Sardinia, the enzyme defect is frequent as a consequence of selection by malaria in the past. This study investigated the relationship between G6PD deficiency and colorectal cancer (CRC).A retrospective case-control study of 3901 patients from Sardinia, who underwent a colonoscopy between 2006 and 2016, was performed...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27849257/effects-of-nitrate-intake-on-myocardial-ischemia-reperfusion-injury-in-diabetic-rats
#3
Sajad Jeddi, Saeedeh Khalifi, Mahboubeh Ghanbari, Fatemeh Bageripour, Asghar Ghasemi
BACKGROUND: Coronary artery disease is 2-3 times more common in diabetic individuals. Dietary nitrate/nitrite has beneficial effects in both diabetes and cardiovascular disease. It also has protective effects against myocardial ischemia-reperfusion (IR) injury in healthy animals. However, the effects of nitrate on myocardial IR injury in diabetic rats have not yet been investigated. OBJECTIVE: We examined the effects of dietary nitrate on myocardial IR injury in streptozotocin-nicotinamide-induced diabetic rats...
October 2016: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/27832180/cordyceps-militaris-treatment-preserves-renal-function-in-type-2-diabetic-nephropathy-mice
#4
Sung-Hsun Yu, Navneet Kumar Dubey, Wei-Shan Li, Ming-Che Liu, Han-Sun Chiang, Sy-Jye Leu, Ying-Hua Shieh, Feng-Chou Tsai, Win-Ping Deng
Diabetic nephropathy is derived from long-term effects of high blood glucose on kidney function in type 2 diabetic patients. Several antidiabetic drugs and herbal medications have failed to prevent episodes of DN. Hence, this study aimed to further investigate the renal injury-reducing effect of antidiabetic CmNo1, a novel combination of powders of fruiting bodies and mycelia of Cordyceps militaris. After being administered with streptozotocin-nicotinamide and high-fat-diet, the diabetic nephropathy mouse model displayed elevated blood glucose and renal dysfunction markers including serum creatinine and kidney-to-body weight ratio...
2016: PloS One
https://www.readbyqxmd.com/read/27816519/cognitive-decline-in-type-2-diabetic-db-db-mice-may-be-associated-with-brain-region-specific-metabolic-disorders
#5
Hong Zheng, Yongquan Zheng, Liangcai Zhao, Minjiang Chen, Guanghui Bai, Yongsheng Hu, Wenyi Hu, Zhihan Yan, Hongchang Gao
Type 2 diabetes has been associated with cognitive decline, but its metabolic mechanism remains unclear. In the present study, we attempted to investigate brain region-specific metabolic changes in db/db mice with cognitive decline and explore the potential metabolic mechanism linking type 2 diabetes and cognitive decline. We analyzed the metabolic changes in seven brain regions of two types of mice (wild-type mice and db/db mice with cognitive decline) using a (1)H NMR-based metabolomic approach. Then, a mixed-model analysis was used to evaluate the effects of mice type, brain region, and their interaction on metabolic changes...
November 3, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27795979/interleukin-10-restores-gastric-emptying-electrical-activity-and%C3%A2-interstitial-cells-of-cajal-networks-in-diabetic-mice
#6
Kyoung Moo Choi, Simon J Gibbons, Lei Sha, Arthur Beyder, Pieter-Jan Verhulst, Gianluca Cipriani, Jessica E Phillips, Anthony J Bauer, Tamas Ordog, Jon J Camp, Xin Ge, Adil E Bharucha, David R Linden, Joseph H Szurszewski, Purna C Kashyap, Gianrico Farrugia
BACKGROUND & AIMS: Gastroparesis is a complication of diabetes characterized by delayed emptying of stomach contents and accompanied by early satiety, nausea, vomiting, and pain. No safe and reliable treatments are available. Interleukin 10 (IL10) activates the M2 cytoprotective phenotype of macrophages and induces expression of heme oxygenase 1 (HO1) protein. We investigated whether IL10 administration could improve gastric emptying and reverse the associated cellular and electrical abnormalities in diabetic mice...
July 2016: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/27790148/in-vivo-evaluation-of-two-thiazolidin-4-one-derivatives-in-high-sucrose-diet-fed-pre-diabetic-mice-and-their-modulatory-effect-on-ampk-akt-and-p38-map-kinase-in-l6-cells
#7
Jayesh Mudgal, Priya Shetty, Neetinkumar D Reddy, H S Akhila, Karthik Gourishetti, Geetha Mathew, Pawan G Nayak, Nitesh Kumar, Anoop Kishore, Nampurath G Kutty, Krishnadas Nandakumar, Rekha R Shenoy, Chamallamudi M Rao, Alex Joseph
We had previously demonstrated the anti-diabetic potential and pancreatic protection of two thiazolidin-4-one derivatives containing nicotinamide moiety (NAT-1 and NAT-2) in STZ-induced diabetic mice. However, due to the limitations of the STZ model, we decided to undertake a detailed evaluation of anti-diabetic potential of the molecules on a high sucrose diet (HSD) fed diabetic mouse model. Further, in vitro mechanistic studies on the phosphorylation of AMPK, Akt and p38 MAP kinase in L6 myotubes and anti-inflammatory studies in RAW264...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27784187/renoprotective-effect-of-bacopa-monnieri-via-inhibition-of-advanced-glycation-end-products-and-oxidative-stress-in-stz-nicotinamide-induced-diabetic-nephropathy
#8
Lalit Kishore, Navpreet Kaur, Randhir Singh
Hyperglycemia and oxidative stress are involved in the development of diabetic nephropathy (DN). This study was designed to evaluate the effect of alcohol and hydroalcohol extract of Bacopa monnieri and stigmasterol isolated from B. monnieri in the treatment of DN. Diabetes was induced in male wistar rats by streptozotocin (65 mg/kg i.p.) 15 min after nicotinamide (230 mg/kg, i.p.) administration. After 30 days, the rats were treated with different doses of extracts (100, 200, and 400 mg/kg) and stigmasterol (5 and 10 mg/kg) for 45 days to analyze their nephroprotective effect and produced significant attenuation in the serum glucose level, uric acid, creatinine, and lipid levels...
October 26, 2016: Renal Failure
https://www.readbyqxmd.com/read/27783671/nk-cd11c-cell-crosstalk-in-diabetes-enhances-il-6-mediated-inflammation-during-mycobacterium-tuberculosis-infection
#9
Satyanarayana Swamy Cheekatla, Deepak Tripathi, Sambasivan Venkatasubramanian, Pavan Kumar Nathella, Padmaja Paidipally, Munenori Ishibashi, Elwyn Welch, Amy R Tvinnereim, Mitsuo Ikebe, Vijaya Lakshmi Valluri, Subash Babu, Hardy Kornfeld, Ramakrishna Vankayalapati
In this study, we developed a mouse model of type 2 diabetes mellitus (T2DM) using streptozotocin and nicotinamide and identified factors that increase susceptibility of T2DM mice to infection by Mycobacterium tuberculosis (Mtb). All Mtb-infected T2DM mice and 40% of uninfected T2DM mice died within 10 months, whereas all control mice survived. In Mtb-infected mice, T2DM increased the bacterial burden and pro- and anti-inflammatory cytokine and chemokine production in the lungs relative to those in uninfected T2DM mice and infected control mice...
October 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27773814/role-of-sirtuin3-in-high-glucose-induced-apoptosis-in-renal-tubular-epithelial-cells
#10
Xiaocui Jiao, Ying Li, Tao Zhang, Maodong Liu, Yanqing Chi
The apoptosis of renal tubular epithelial cells contributes to the pathogenesis of diabetic nephropathy. High glucose-induced mitochondrial oxidative stress is considered to be an important mediator for renal tubular cell apoptosis. Sirtuin3(Sirt3), a kind of mitochondria-localized nicotinamide adenine dinucleotide(NAD(+))-dependent protein deacetylase, has been reported to regulate the generation of ROS in mitochondria through regulating acetylation level and activity of several key mitochondrial enzymes. In this study, we investigated the role of Sirt3 on high glucose-induced apoptosis in HK-2 cells...
October 20, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27761064/human-cytochrome-p450-enzyme-modulation-by-gymnema-sylvestre-a-predictive-safety-evaluation-by-lc-ms-ms
#11
Bera Rammohan, Karmakar Samit, Das Chinmoy, Saha Arup, Kundu Amit, Sarkar Ratul, Karmakar Sanmoy, Adhikari Dipan, Sen Tuhinadri
BACKGROUND: Traditionally GS is used to treat diabetes mellitus. Drug-herb interaction of GS via cytochrome P450 enzyme system by substrate cocktail method using HLM has not been reported. OBJECTIVE: To evaluate the in-vitro modulatory effects of GS extracts (aqueous, methanol, ethyl acetate, chloroform and n-hexane) and deacylgymnemic acid (DGA) on human CYP1A2, 2C8, 2C9, 2D6 and 3A4 activities in HLM. MATERIAL AND METHODS: Probe substrate-based LCMS/MS method was established for all CYPs...
July 2016: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/27754252/os-36-03-e-box-cpg-hypomethylation-of-nmn-producing-enzyme-nampt-in-proximal-tubules-enables-constant-supply-of-nmn-from-tubules-to-glomeruli-which-is-disrupted-in-diabetic-nephropathy
#12
Hirokazu Muraoka, Kazuhiro Hasegawa, Shu Wakino
OBJECTIVE: Nicotinamide phosphoribosyltransferase (Nampt) cooperates with a longevity gene, Sirt1, to exert the potentiation of stress resistance. We have reported that the high expression level of Nampt in PTs contributes to the sufficient supply of NMN to glomeruli. We also showed that downregulation of Nampt and NMN in PT in DN leads to glomerular damages (Nature Medicine 2013). However, the regulation mechanisms of Nampt expression remain unknown. DESIGN AND METHOD: We investigated how Nampt expression is consistently retained at high levels in PTs under normal conditions and how Nampt levels are decreased in DN...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27754227/os-33-03-serum-n1-methylnicotinamide-is-associated-with-obesity-and-diabetes-in-chinese
#13
Ming Liu, Lihua Li, Jihong Chu, Guoliang Dai, Wenzheng Ju, Zhenxing Wang, Zhuyuan Fang
OBJECTIVE: Nicotinamide N-methyltransferase (NNMT) is a novel histone methylation modulator that regulates energy metabolism, and NNMT knockdown prevents diet-induced obesity in mice. However, whether NNMT plays a role in human obesity and type 2 diabetes mellitus (T2DM) remains to be elucidated. NNMT catalyzes methylation of nicotinamide to generate N-methylnicotinamide (me-NAM). We aimed to investigate the associations of serum me-NAM with obesity and T2DM in Chinese. DESIGN AND METHOD: The study subjects (n = 1160) were recruited from Dali, a city of Yunan province, in southwest China...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27722638/attenuation-of-oxidative-stress-in-type-1-diabetic-rats-supplemented-with-a-seasoning-obtained-from-winemaking-by-products-and-its-effect-on-endothelial-function
#14
Raquel Del Pino-García, María D Rivero-Pérez, María L González-SanJosé, Pablo Castilla-Camina, Kevin D Croft, Pilar Muñiz
Type 1 diabetes mellitus (DM) is characterized by hyperglycemia resulting from insulin deficiency. This is usually accompanied by a pro-oxidative environment, dyslipidemia and endothelial dysfunction, thus leading to several micro- and macro-vascular complications. This study investigated the potential benefits of a seasoning obtained from seedless red wine pomace (RWPS) in protecting against oxidative damage and preserving endothelial function in Type 1 DM, and the underlying mechanisms involved at the level of gene expression...
October 12, 2016: Food & Function
https://www.readbyqxmd.com/read/27704523/the-effect-of-bilberries-on-diabetes-related-alterations-of-interstitial-cells-of-cajal-in-the-lower-oesophageal-sphincter-in-rats
#15
Aleksandra Velickov, Olivera Mitrovic, Branka Djordjevic, Dusan Sokolovic, Vladimir Zivkovic, Asen Velickov, Vukica Pantovic, Natasa Poklar Urlih, Goran Radenkovic
Diabetic gastroenteropathy involves not only the parasympathetic and sympathetic autonomic nerves, but also enteric neurons, smooth muscle cells and interstitial cells of Cajal (ICC). ICC are the cells of mesenchymal origin that occur within and around the muscle layers in the gastrointestinal tract. The objective of the present study was to investigate the alterations of ICC in the lower oesophageal sphincter (LOS) of streptozotocin-nicotinamide non-insulin-dependent diabetes rats. Moreover, we investigated possible ICC in rats with the same type of diabetes, treated with bilberry fruit extract, bearing in mind that its hypoglycemic effect had been already proven...
October 5, 2016: Histology and Histopathology
https://www.readbyqxmd.com/read/27681422/nampt-mediated-nad-biosynthesis-is-essential-for-vision-in-mice
#16
Jonathan B Lin, Shunsuke Kubota, Norimitsu Ban, Mitsukuni Yoshida, Andrea Santeford, Abdoulaye Sene, Rei Nakamura, Nicole Zapata, Miyuki Kubota, Kazuo Tsubota, Jun Yoshino, Shin-Ichiro Imai, Rajendra S Apte
Photoreceptor death is the endpoint of many blinding diseases. Identifying unifying pathogenic mechanisms in these diseases may offer global approaches for facilitating photoreceptor survival. We found that rod or cone photoreceptor-specific deletion of nicotinamide phosphoribosyltransferase (Nampt), the rate-limiting enzyme in the major NAD(+) biosynthetic pathway beginning with nicotinamide, caused retinal degeneration. In both cases, we could rescue vision with nicotinamide mononucleotide (NMN). Significantly, retinal NAD(+) deficiency was an early feature of multiple mouse models of retinal dysfunction, including light-induced degeneration, streptozotocin-induced diabetic retinopathy, and age-associated dysfunction...
September 27, 2016: Cell Reports
https://www.readbyqxmd.com/read/27680512/integrative-transcriptomic-meta-analysis-of-parkinson-s-disease-and-depression-identifies-nampt-as-a-potential-blood-biomarker-for-de-novo-parkinson-s-disease
#17
Jose A Santiago, Alyssa M Littlefield, Judith A Potashkin
Emerging research indicates that depression could be one of the earliest prodromal symptoms or risk factors associated with the pathogenesis of Parkinson's disease (PD), the second most common neurodegenerative disorder worldwide, but the mechanisms underlying the association between both diseases remains unknown. Understanding the molecular networks linking these diseases could facilitate the discovery of novel diagnostic and therapeutics. Transcriptomic meta-analysis and network analysis of blood microarrays from untreated patients with PD and depression identified genes enriched in pathways related to the immune system, metabolism of lipids, glucose, fatty acids, nicotinamide, lysosome, insulin signaling and type 1 diabetes...
September 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27643217/os-36-03-e-box-cpg-hypomethylation-of-nmn-producing-enzyme-nampt-in-proximal-tubules-enables-constant-supply-of-nmn-from-tubules-to-glomeruli-which-is-disrupted-in-diabetic-nephropathy
#18
Hirokazu Muraoka, Kazuhiro Hasegawa, Shu Wakino
OBJECTIVE: Nicotinamide phosphoribosyltransferase (Nampt) cooperates with a longevity gene, Sirt1, to exert the potentiation of stress resistance. We have reported that the high expression level of Nampt in PTs contributes to the sufficient supply of NMN to glomeruli. We also showed that downregulation of Nampt and NMN in PT in DN leads to glomerular damages (Nature Medicine 2013). However, the regulation mechanisms of Nampt expression remain unknown. DESIGN AND METHOD: We investigated how Nampt expression is consistently retained at high levels in PTs under normal conditions and how Nampt levels are decreased in DN...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27643187/os-33-03-serum-n1-methylnicotinamide-is-associated-with-obesity-and-diabetes-in-chinese
#19
Ming Liu, Lihua Li, Jihong Chu, Guoliang Dai, Wenzheng Ju, Zhenxing Wang, Zhuyuan Fang
OBJECTIVE: Nicotinamide N-methyltransferase (NNMT) is a novel histone methylation modulator that regulates energy metabolism, and NNMT knockdown prevents diet-induced obesity in mice. However, whether NNMT plays a role in human obesity and type 2 diabetes mellitus (T2DM) remains to be elucidated. NNMT catalyzes methylation of nicotinamide to generate N-methylnicotinamide (me-NAM). We aimed to investigate the associations of serum me-NAM with obesity and T2DM in Chinese. DESIGN AND METHOD: The study subjects (n = 1160) were recruited from Dali, a city of Yunan province, in southwest China...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27634381/quercetin-decreases-insulin-resistance-in-a-polycystic-ovary-syndrome-rat-model-by-improving-inflammatory-microenvironment
#20
Zhenzhi Wang, Dongxia Zhai, Danying Zhang, Lingling Bai, Ruipin Yao, Jin Yu, Wen Cheng, Chaoqin Yu
Insulin resistance (IR) is a clinical feature of polycystic ovary syndrome (PCOS). Quercetin, derived from Chinese medicinal herbs such as hawthorn, has been proven practical in the management of IR in diabetes. However, whether quercetin could decrease IR in PCOS is unknown. This study aims to observe the therapeutic effect of quercetin on IR in a PCOS rat model and explore the underlying mechanism. An IR PCOS rat model was established by subcutaneous injection with dehydroepiandrosterone. The body weight, estrous cycle, and ovary morphology of the quercetin-treated rats were observed...
September 15, 2016: Reproductive Sciences
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