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https://www.readbyqxmd.com/read/28742858/reduction-of-endoplasmic-reticulum-mitochondria-interactions-in-beta-cells-from-patients-with-type-2-diabetes
#1
Charles Thivolet, Guillaume Vial, Romeo Cassel, Jennifer Rieusset, Anne-Marie Madec
Type 2 diabetes develops when beta cells are not able to fulfill insulin needs. The role of the endoplasmic reticulum-mitochondria junction in coordinating the functions of these two organelles throughout the natural history of type 2 diabetes is determinant and may explain the alterations of insulin biosynthesis. Our goal was to study endoplasmic reticulum and mitochondrial interactions in human beta cells from organ donors with type 2 diabetes. Pancreas samples were obtained via the network for pancreatic organ donors with diabetes (nPOD) based on disease status with 12 subjects with type 2 diabetes and 9 non-diabetic controls...
2017: PloS One
https://www.readbyqxmd.com/read/28739184/carotid-plaque-instability-is-not-related-to-quantity-but-to-elemental-composition-of-calcification
#2
S Bischetti, M Scimeca, E Bonanno, M Federici, L Anemona, R Menghini, S Casella, M Cardellini, A Ippoliti, A Mauriello
BACKGROUND AND AIMS: Recent studies highlighted the role of calcification processes in the clinical progression of chronic cardiovascular diseases. In this study we investigated the relationship between the chemical composition of calcification and atherosclerotic plaque stability in carotid arteries. METHODS AND RESULTS: To this end, we characterized the calcification on 229 carotid plaques, by morphology, immunohistochemistry, transmission electron microscopy and energy dispersive X-ray microanalysis...
May 31, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28738764/neuroprotection-by-endo-cannabinoids-in-glaucoma-and-retinal-neurodegenerative-diseases
#3
Cinzia Rapino, Daniel Tortolani, Lucia Scipioni, Mauro Maccarrone
Emerging neuroprotective strategies are being explored to preserve the retina from degeneration, that occurs in eye pathologies like glaucoma, diabetic retinopathy, age-related macular degeneration, and retinitis pigmentosa. Incidentally, neuroprotection of retina is a defending mechanism designed to prevent or delay neuronal cell death, and to maintain neural function following an initial insult, thus avoiding loss of vision. Numerous studies have investigated potential neuroprotective properties of plant-derived phytocannabinoids, as well as of their endogenous counterparts collectively termed endocannabinoids (eCBs), in several degenerative diseases of the retina...
July 24, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28729250/stellarex-drug-coated-balloon-for-treatment-of-femoropopliteal-disease-12-month-outcomes-from-the-randomized-illumenate-pivotal-and-pharmacokinetic-studies
#4
Prakash Krishnan, Peter Faries, Khusrow Niazi, Ash Jain, Ravish Sachar, William B Bachinsky, Joseph A Cardenas, Martin Werner, Marianne Brodmann, J A Mustapha, Carlos I Mena-Hurtado, Michael R Jaff, Andrew H Holden, Sean P Lyden
Background -Drug-coated balloons (DCB) are a predominant revascularization therapy for symptomatic femoropopliteal artery disease. Due to differences in excipients, paclitaxel dose and coating morphologies, varying clinical outcomes have been observed with different DCBs. We report the results of two studies investigating the pharmacokinetic (PK) and clinical outcomes of a new DCB to treat femoropopliteal disease. Methods -In the ILLUMENATE Pivotal Study, 300 symptomatic patients (Rutherford class 2-4), were randomized to DCB (N=200) or standard angioplasty (PTA) (N=100)...
July 20, 2017: Circulation
https://www.readbyqxmd.com/read/28729151/standard-dose-pembrolizumab-in-combination-with-reduced-dose-ipilimumab-for-patients-with-advanced-melanoma-keynote-029-an-open-label-phase-1b-trial
#5
Georgina V Long, Victoria Atkinson, Jonathan S Cebon, Michael B Jameson, Bernie M Fitzharris, Catriona M McNeil, Andrew G Hill, Antoni Ribas, Michael B Atkins, John A Thompson, Wen-Jen Hwu, F Stephen Hodi, Alexander M Menzies, Alexander D Guminski, Richard Kefford, Benjamin Y Kong, Babak Tamjid, Archana Srivastava, Anna J Lomax, Mohammed Islam, Xinxin Shu, Scot Ebbinghaus, Nageatte Ibrahim, Matteo S Carlino
BACKGROUND: Reduced-dose nivolumab in combination with standard-dose ipilimumab improves objective response and progression-free survival compared with standard-dose ipilimumab alone, but increases toxicity. We assessed the safety and anti-tumour activity of standard-dose pembrolizumab in combination with reduced-dose ipilimumab. METHODS: In this open-label, phase 1b trial, we recruited patients from 12 medical centres in Australia, New Zealand, and the USA. Eligible patients were aged at least 18 years, had advanced melanoma, had an Eastern Coooperative Oncology Group performance status of 0 or 1, had measurable disease according to the Response Evaluation Criteria in Solid Tumors (RECIST) version 1...
July 17, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28726759/high-resolution-inhibition-profiling-combined-with-hplc-hrms-spe-nmr-for-identification-of-ptp1b-inhibitors-from-vietnamese-plants
#6
Binh Thi Dieu Trinh, Anna K Jäger, Dan Staerk
Protein tyrosine phosphatase 1B (PTP1B) plays a key role as a negative regulator in insulin signal transduction by deactivating the insulin receptor. Thus, PTP1B inhibition has emerged as a potential therapeutic strategy for curing insulin resistance. In this study, 40 extracts from 18 different plant species were investigated for PTP1B inhibitory activity in vitro. The most promising one, the EtOAc extract of Ficus racemosa, was investigated by high-resolution PTP1B inhibition profiling combined with HPLC-HRMS-SPE-NMR analysis...
July 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28726493/chemical-profile-and-antihyperlipidemic-effect-of-portulaca-oleracea-l-seeds-in-streptozotocin-induced-diabetic-rats
#7
Jilan A Nazeam, Hala M El-Hefnawy, Gamal Omran, Abdel-Naser Singab
Hypolipidemic effect of Portulaca oleracea L. seed extract and its fractions have been studied on streptozotocin (STZ) at dose 75 mg/kg b.wt. After fractionation of the alcoholic extract; petroleum ether fraction was the most active fraction that decreased different hyperlipidemia biochemical parameters. After chromatographic analysis; oleamide, ethylpalmitate, β-amyrin, stigmasterol and β-sitosterol were identified. The GLC analysis of unsaponifiable matter revealed the presence of; lignoceric acid as a major constituent in the most bioactive fraction...
July 20, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28725323/the-elevation-of-cardio-ankle-vascular-index-in-a-patient-with-malignant-lymphoma-treated-with-a-combination-therapy-of-rituximab-and-cyclophosphamide-doxorubicin-vincristine-and-prednisolone
#8
Naomi Shimizu, Noriko Ban, Yasuhiro Watanabe, Asami Rikitake, Rena Watanabe, Sho Tanaka, Yuta Sato, Haruki Imamura, Hidetoshi Kawana, Takashi Yamaguchi, Atsuhito Saiki, Ichiro Tatsuno, Kohji Shirai
An increased risk of arteriosclerosis has been noted in cancer survivors. Currently, there are only a few reports available that consider the risk of arteriosclerosis in patients treated with chemotherapy. Patients with an advanced stage B-cell malignant lymphoma are typically treated with a combination therapy of rituximab and cyclophosphamide, doxorubicin, vincristine, and prednisolone (R-CHOP). Complications such as diabetes mellitus (DM), hyperlipidemia (HL), and osteoporosis due to prednisolone and cardiotoxicity due to anthracyclines are well known...
August 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28724910/investigating-glycemic-potential-of-rice-by-unraveling-compositional-variations-in-mature-grain-and-starch-mobilization-patterns-during-seed-germination
#9
Maria Krishna de Guzman, Sabiha Parween, Vito M Butardo, Crisline Mae Alhambra, Roslen Anacleto, Christiane Seiler, Anthony R Bird, Chung-Ping Chow, Nese Sreenivasulu
Rice lines with slower starch digestibility provide opportunities in mitigating the global rise in type II diabetes and related non-communicable diseases. However, screening for low glycemic index (GI) in rice breeding programs is not possible due to time and cost constraints. This study evaluated the feasibility of using in vitro cooked grain amylolysis, starch mobilization patterns during seed germination, and variation in starch structure and composition in the mature seed to differentiate patterns of starch digestibility...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28722418/urine-metabonomics-reveals-early-biomarkers-in-diabetic-cognitive-dysfunction
#10
Lili Song, Pengwei Zhuang, Mengya Lin, Mingqin Kang, Hongyue Liu, Yuping Zhang, Zhen Yang, Yunlong Chen, Yanjun Zhang
Recently, increasing attention has been paid to diabetic encephalopathy which is one of frequent diabetic complications and affects nearly 30% diabetics. Since cognitive dysfunction from diabetic encephalopathy might develop irreversible dementia, early diagnosis and detection of this disease is of great significance for its prevention and treatment. This study is to investigate the early specific metabolites biomarkers in the urine prior to the onset of diabetic cognitive dysfunction (DCD) by using metabolomics technology...
July 19, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28721827/melatonin-as-pleiotropic-molecule-with-therapeutic-potential-for-type-2-diabetes-and-cancer
#11
Marzena Wojcik, Michal Krawczyk, Pawel Wojcik, Katarzyna Cypryk, Lucyna Alicja Wozniak
The incidence both of diabetes, particularly type 2 (T2DM), and cancer is increasing worldwide, making these diseases growing global health problem along with increasing healthcare expenditures. The current therapeutic approach for the treatment of these multifactorial diseases is far from satisfactory. Therefore, there is still considerable interest in searching new therapeutic strategies with the use of both natural and synthetic compounds exhibiting higher efficiency and lower toxicity compared to medicines used currently in clinical practice...
July 18, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28720074/regeneration-of-long-distance-peripheral-nerve-defects-after-delayed-reconstruction-in-healthy-and-diabetic-rats-is-supported-by-immunomodulatory-chitosan-nerve-guides
#12
Lena Stenberg, Maria Stößel, Giulia Ronchi, Stefano Geuna, Yaobin Yin, Susanne Mommert, Lisa Mårtensson, Jennifer Metzen, Claudia Grothe, Lars B Dahlin, Kirsten Haastert-Talini
BACKGROUND: Delayed reconstruction of transection or laceration injuries of peripheral nerves is inflicted by a reduced regeneration capacity. Diabetic conditions, more frequently encountered in clinical practice, are known to further impair regeneration in peripheral nerves. Chitosan nerve guides (CNGs) have recently been introduced as a new generation of medical devices for immediate peripheral nerve reconstruction. Here, CNGs were used for 45 days delayed reconstruction of critical length 15 mm rat sciatic nerve defects in either healthy Wistar rats or diabetic Goto-Kakizaki rats; the latter resembling type 2 diabetes...
July 18, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28719799/mesencephalic-astrocyte-derived-neurotrophic-factor-manf-a-new-player-in-endoplasmic-reticulum-diseases-structure-biology-and-therapeutic-roles
#13
REVIEW
Yeawon Kim, Sun-Ji Park, Ying Maggie Chen
Mesencephalic astrocyte-derived neurotrophic factor (MANF), a newly identified 18-kDa soluble protein, localizes to the luminal endoplasmic reticulum (ER), whose stress can stimulate MANF expression and secretion. In Drosophila and zebrafish, MANF regulates dopaminergic neuron development. In contrast, in mice, MANF deficiency leads to diabetes and activation of the unfolded protein response. Recent studies in rodent models have demonstrated that MANF mitigates diabetes, exerts neurotrophic function in neurodegenerative disease, protects cardiomyocytes and neurons in myocardial infarction and cerebral ischemia, respectively, and promotes immune cell phenotype switch from proinflammatory macrophages to prorepair anti-inflammatory macrophages...
June 29, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28717786/setting-priorities-for-diabetic-retinopathy-clinical-research-and-identifying-evidence-gaps
#14
Jimmy T Le, Susan Hutfless, Tianjing Li, Neil M Bressler, James Heyward, Ava K Bittner, Adam Glassman, Kay Dickersin
PURPOSE: Prioritizing comparative effectiveness research may contribute to obtaining answers that clinicians perceive they need and may minimize research that could be considered wasteful. Our objective was to identify evidence gaps and set priorities for new systematic reviews and randomized controlled trials for managing diabetic retinopathy (DR), including diabetic macular edema (DME). DESIGN: Cross-sectional study. PARTICIPANTS: Diabetic Retinopathy Clinical Research Network (DRCR...
March 2017: Ophthalmology retina
https://www.readbyqxmd.com/read/28716336/relation-of-exercise-capacity-to-risk-of-development-of-diabetes-in-patients-on-statin-therapy-the-henry-ford-exercise-testing-project
#15
Gabriel E Shaya, Stephen P Juraschek, David I Feldman, Clinton A Brawner, Jonathan K Ehrman, Steven J Keteyian, Mouaz H Al-Mallah, Michael J Blaha
High exercise capacity (EC) has been associated with a lower risk of incident diabetes, whereas statin therapy has been associated with a higher risk. We sought to investigate whether the association between EC and diabetes risk is modified by statin therapy. This retrospective cohort study included 47,337 patients without diabetes or coronary artery disease at baseline (age 53 ± 13 years, 48% women, 66% white) who underwent clinical treadmill stress testing within the Henry Ford Health System from January 1, 1991, to May 31, 2009...
June 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28715444/pyrrolidine-dithiocarbamate-ameliorates-endothelial-dysfunction-in-thoracic-aorta-of-diabetic-rats-by-preserving-vascular-ddah-activity
#16
Chang-Wu Lu, Yuan Lin, Yan-Ping Lei, Lan Wang, Zhi-Min He, Yan Xiong
OBJECTIVE: Endothelial dysfunction plays a pivotal role in the development of diabetic cardiovascular complications. Accumulation of endogenous nitric oxide synthase (NOS) inhibitor asymmetric dimethylarginine (ADMA) and inhibition of dimethylarginine dimethylaminohydrolase (DDAH) activity have been involved in diabetic endothelial dysfunction. This study was to investigate the effect of pyrrolidine dithiocarbamate (PDTC) on impairment of endothelium-dependent vasodilatation in diabetic rats and its potential mechanism...
2017: PloS One
https://www.readbyqxmd.com/read/28712655/insulin-regulation-of-proteostasis-and-clinical-implications
#17
REVIEW
Haleigh A James, Brian T O'Neill, K Sreekumaran Nair
Maintenance and modification of the cellular proteome are at the core of normal cellular physiology. Although insulin is well known for its control of glucose homeostasis, its critical role in maintaining proteome homeostasis (proteostasis) is less appreciated. Insulin signaling regulates protein synthesis and degradation as well as posttranslational modifications at the tissue level and coordinates proteostasis at the organism level. Here, we review regulation of proteostasis by insulin in postabsorptive, postprandial, and diabetic states...
July 10, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28709620/synthesis-and-anti-diabetic-activity-of-new-n-n-dimethylphenylenediamine-derivatized-nitrilotriacetic-acid-vanadyl-complexes
#18
Xia Niu, Jichun Yang, Xiaoda Yang
Vanadium compounds are promising anti-diabetic agents. However, reducing the metal toxicity while keeping/improving the hypoglycemic effect is still a big challenge towards the success of anti-diabetic vanadium drugs. To improve the therapeutic potency using the anti-oxidative strategy, we synthesized new N,N-dimethylphenylenediamine (DMPD)-derivatized nitrilotriacetic acid vanadyl complexes ([VO(dmada)]). The in vitro biological evaluations revealed that the DMPD-derivatized complexes showed improved antioxidant capacity and lowered cytotoxicity on HK-2 cells than bis(maltolato)oxidovanadium (IV) (BMOV)...
July 8, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28704564/poor-clinical-response-in-rheumatoid-arthritis-is-the-main-risk-factor-for-diabetes-development-in-the-short-term-a-1-year-single-centre-longitudinal-study
#19
Piero Ruscitti, Francesco Ursini, Paola Cipriani, Vasiliki Liakouli, Francesco Carubbi, Onorina Berardicurti, Giovambattista De Sarro, Roberto Giacomelli
OBJECTIVES: Despite of the European League Against Rheumatism (EULAR) provided different sets of recommendations for the management of cardiovascular risk in inflammatory arthritis patients, it must be pointed out that cardiometabolic comorbidity, such as type 2 diabetes (T2D), remains still underdiagnosed and undertreated in patients affected by rheumatoid arthritis (RA). METHODS: In this work, we designed a single centre, prospective study in order to better investigate the occurrence of T2D during the course of 1 year of follow-up...
2017: PloS One
https://www.readbyqxmd.com/read/28704149/amputation-predictors-in-diabetic-foot-ulcers-treated-with-hyperbaric-oxygen
#20
S T Kaplan, D Hemsinli, S Kaplan, A Arslan
OBJECTIVE: Although hyperbaric oxygen therapy (HBOT) has long been used for diabetic foot ulcers (DFUs), its effectiveness is still controversial. The aim of this study was to investigate the efficacy of HBOT in the management of DFUs and identify amputation predictors. METHOD: Patients with chronic DFUs (Wanger grade 2-5) were included in the study, which took place between January 2010 and December 2012. HBOT, 100% oxygen, 2.4 atmosphere absolute (ATA) for 120 minutes, was administered to all patients in addition to standard treatment...
July 2, 2017: Journal of Wound Care
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