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Diabetes AND platelets

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https://www.readbyqxmd.com/read/28538206/spectroscopic-far-or-terahertz-mid-infrared-and-raman-investigation-thermal-analysis-and-biological-activity-of-piplartine
#1
Anubha Srivastava, T Karthick, B D Joshi, Rashmi Mishra, Poonam Tandon, A P Ayala, Javier Ellena
Research in the field of medicinal plants including Piper species like long pepper (Piper longum L.- Piperaceae) is increasing all over the world due to its use in traditional and Ayurvedic medicine. Piplartine (piperlongumine, 5,6-dihydro-1-[(2E)-1-oxo-3-(3,4,5-trimethoxyphenyl)-2-propenyl]-2(1H)-pyridinone), a biologically active alkaloid/amide was isolated from the phytochemical investigations of Piper species, as long pepper. This alkaloid has cytotoxic, anti-fungal, anti-diabetic, anti-platelet aggregation, anti-tumoral, anxiolytic, anti-depressant, anti-leishmanial, and genotoxic activities, but, its anticancer property is the most promising and has been widely explored...
May 5, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28533146/bioactive-lipids-derived-from-arachidonic-acid-metabolism-in-different-types-of-renal-replacement-therapy
#2
Joanna Stępniewska, Barbara Dołęgowska, Kamila Puchałowicz, Edyta Gołembiewska, Kazimierz Ciechanowski
INTRODUCTION: Metabolism and plasma concentration of lipids and lipid-derived compounds play an important role in kidney physiology and pathological processes. The component of membrane phospholipids - arachidonic acid (AA) and its active derivatives - eicosanoids are involved in the development of hypertension, diabetes, inflammation and may contribute to progression of chronic kidney disease (CKD). The purpose of the study was to determine, whether the type of renal replacement therapy has an effect on eicosanoids metabolism...
May 19, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28532226/novel-biological-therapies-for-the-treatment-of-diabetic-foot-ulcers
#3
Jennifer Adeghate, Syed Nurulain, Kornélia Tekes, Erzsébet Fehér, Huba Kalász, Ernest Adeghate
The number of people with diabetes mellitus (DM) is estimated to exceed 640 million by the year 2040. Diabetic foot ulcer (DFU) is a debilitating illness that affects more than 2% of DM patients. DFU is caused by DM-induced neural and vascular lesions leading to a reduced sensation and microcirculation. The increase in the prevalence of DFU has prompted researchers to find new therapies for the management of DFU. Areas covered: This review presents the current status of novel biological therapies used in the treatment of DFU...
May 22, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28526762/exacerbation-of-thromboinflammation-by-hyperglycemia-precipitates-cerebral-infarct-growth-and-hemorrhagic-transformation
#4
Jean-Philippe Desilles, Varouna Syvannarath, Véronique Ollivier, Clément Journé, Sandrine Delbosc, Célina Ducroux, William Boisseau, Liliane Louedec, Lucas Di Meglio, Stéphane Loyau, Martine Jandrot-Perrus, Louis Potier, Jean-Baptiste Michel, Mikael Mazighi, Benoit Ho-Tin-Noé
BACKGROUND AND PURPOSE: Admission hyperglycemia is associated with a poor outcome in acute ischemic stroke. How hyperglycemia impacts the pathophysiology of acute ischemic stroke remains largely unknown. We investigated how preexisting hyperglycemia increases ischemia/reperfusion cerebral injury. METHODS: Normoglycemic and streptozotocin-treated hyperglycemic rats were subjected to transient middle cerebral artery occlusion. Infarct growth and brain perfusion were assessed by magnetic resonance imaging...
May 19, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28508859/plastic-roles-of-pericytes-in-the-blood-retinal-barrier
#5
Do Young Park, Junyeop Lee, Jaeryung Kim, Kangsan Kim, Seonpyo Hong, Sangyeul Han, Yoshiaki Kubota, Hellmut G Augustin, Lei Ding, Jin Woo Kim, Hail Kim, Yulong He, Ralf H Adams, Gou Young Koh
The blood-retinal barrier (BRB) consists of tightly interconnected capillary endothelial cells covered with pericytes and glia, but the role of the pericytes in BRB regulation is not fully understood. Here, we show that platelet-derived growth factor (PDGF)-B/PDGF receptor beta (PDGFRβ) signalling is critical in formation and maturation of BRB through active recruitment of pericytes onto growing retinal vessels. Impaired pericyte recruitment to the vessels shows multiple vascular hallmarks of diabetic retinopathy (DR) due to BRB disruption...
May 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28504654/sugar-makes-neutrophils-rage-linking-diabetes-associated-hyperglycemia-to-thrombocytosis-and-platelet-reactivity
#6
Robert H Lee, Wolfgang Bergmeier
Diabetes mellitus is associated with an increased risk for cardiovascular disease, but the link between hyperglycemia and atherothrombotic disease is not completely understood. Patients with diabetes often show hyporesponsiveness to antiplatelet therapies, and it has been suggested that hyperreactive reticulated platelets underlie this altered therapeutic response. In this issue of the JCI, Kraakman et al. uncover a previously unknown link between hyperglycemia and enhanced platelet production and reactivity...
May 15, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28504650/neutrophil-derived-s100-calcium-binding-proteins-a8-a9-promote-reticulated-thrombocytosis-and-atherogenesis-in-diabetes
#7
Michael J Kraakman, Man K S Lee, Annas Al-Sharea, Dragana Dragoljevic, Tessa J Barrett, Emilie Montenont, Debapriya Basu, Sarah Heywood, Helene L Kammoun, Michelle Flynn, Alexandra Whillas, Nordin M J Hanssen, Mark A Febbraio, Erik Westein, Edward A Fisher, Jaye Chin-Dusting, Mark E Cooper, Jeffrey S Berger, Ira J Goldberg, Prabhakara R Nagareddy, Andrew J Murphy
Platelets play a critical role in atherogenesis and thrombosis-mediated myocardial ischemia, processes that are accelerated in diabetes. Whether hyperglycemia promotes platelet production and whether enhanced platelet production contributes to enhanced atherothrombosis remains unknown. Here we found that in response to hyperglycemia, neutrophil-derived S100 calcium-binding proteins A8/A9 (S100A8/A9) interact with the receptor for advanced glycation end products (RAGE) on hepatic Kupffer cells, resulting in increased production of IL-6, a pleiotropic cytokine that is implicated in inflammatory thrombocytosis...
May 15, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28502205/role-of-mean-platelet-volume-and-ischemia-modified-albumin-in-evaluation-of-oxidative-stress-and-its-association-with-postnatal-complications-in-infants-of-diabetic-mothers
#8
Lamiaa Mohsen, Dina M Akmal, Elsayed Kamal Elsayed Ghonaim, Nermine Magdi Riad
Gestational diabetes mellitus (GDM) is accompanied by increased oxidative stress causing many complications to pregnant women and their newborns. We aimed to determine cord blood levels of mean platelet volume (MPV) and ischemia modified albumin (IMA) as a reflection of oxidative stress in babies born to mothers suffering from GDM. Eighty pregnant women were enrolled in the study. They were divided into 2 groups: forty with GDM and forty healthy matched controls. Each group included twenty giving birth by normal vaginal delivery (NVD) and twenty by cesarean section (C...
May 14, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28487436/protective-effect-of-let-7-mirna-family-in-regulating-inflammation-in-diabetes-associated-atherosclerosis
#9
Eoin Brennan, Bo Wang, Aaron McClelland, Muthukumar Mohan, Mariam Marai, Ophelie Beuscart, Sinda Derouiche, Stephen Gray, Raelene Pickering, Chris Tikellis, Monica de Gaetano, Mary Barry, Orina Belton, Syed Tasadaque Ali-Shah, Patrick Guiry, Karin Am Jandeleit-Dahm, Mark E Cooper, Catherine Godson, Phillip Kantharidis
The let-7 miRNA family play a key role in modulating inflammatory responses. Vascular smooth muscle cell (SMC) proliferation, and endothelial cell (EC) dysfunction are critical in the pathogenesis of atherosclerosis, including in the setting of diabetes. Here we report that let-7 levels are decreased in diabetic human carotid plaques and in a model of diabetes-associated atherosclerosis (DAA), the diabetic ApoE(-/-) mouse. In vitro, platelet-derived growth factor (PDGF) and tumor necrosis factor-alpha (TNF-α) induced vascular SMC and EC activation was associated with reduced let-7 miRNA expression, via Lin28b, a negative regulator of let-7 biogenesis...
May 9, 2017: Diabetes
https://www.readbyqxmd.com/read/28486836/inverse-relationship-between-vitamin-d-levels-and-platelet-indices-in-korean-adults
#10
Yon Chul Park, Jin Kim, Min Seok Seo, Sung Won Hong, Eun Seok Cho, Jong-Koo Kim
BACKGROUND AND AIMS: Vitamin D deficiency and increased platelet indices are associated with increased rate or risk of several diseases such as cardiovascular disease and metabolic syndrome, respectively. We investigated whether vitamin D deficiency is associated with increased platelet count (PC) and mean platelet volume (MPV). METHODS AND RESULTS: The study included 3190 subjects older than 20 years. Subjects were divided into three groups based on their vitamin D levels: vitamin D deficiency (<10...
May 10, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/28480814/application-of-platelet-derived-growth-factor-bb-and-diabetic-wound-healing-the-relationship-with-oxidative-events
#11
Sibel Gökşen, Barbaros Balabanlı, Şule Coşkun Cevher
The reasons that cause delay in wound healing in diabetes are a decrease in the level of growth factors secretion, an increase in the destruction of growth factors and in oxidative stress. Platelet derived growth factor (PDGF) is one of the important growth factors that play a role in all phases of wound healing. This study investigates time-dependent effects of topically PDGF-BB administration on oxidative events on the healing of dorsolateral-excisional wounds in diabetic rats. Forty-two female Wistar-albino rats with streptozotocin (STZ)-induced diabetes were divided into four groups: control group, untreated group, chitosan-treated group, chitosan+PDGF-BB-treated group...
May 7, 2017: Free Radical Research
https://www.readbyqxmd.com/read/28478966/a-rare-case-of-multiple-brain-abscess-and-probably-disseminated-phaeohyphomycosis-due-to-cladophialophora-bantiana-in-an-immunosuppressed-individual-from-india
#12
S Lahiri Mukhopadhyay, A Mahadevan, V H Bahubali, R Dawn Bharath, A R Prabhuraj, S Maji, N Siddaiah
Cladophialophora bantiana, a dematiaceous neurotropic mold causes rare and lethal brain abscess, commonly in immunocompetent hosts. We report a rare and probably a case of disseminated infection with this black mold in an immunosuppressed individual from India. A 55-year-old diabetic male presented with severe headache, blurred-vision, behavioural abnormalities, eye-pain and ear-discharge. He was undergoing treatment for hypertension, prostatomegaly and obstructive pulmonary disease. He was on steroids for the past six years for uveitis...
May 3, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28476587/preparation-and-in-vivo-evaluation-of-cationic-elastic-liposomes-comprising-highly-skin-permeable-growth-factors-combined-with-hyaluronic-acid-for-enhanced-diabetic-wound-healing-therapy
#13
Jeong Uk Choi, Seong Wook Lee, Rudra Pangeni, Youngro Byun, In-Soo Yoon, Jin Woo Park
To enhance the therapeutic effects of exogenous administration of growth factors (GFs) in the treatment of chronic wounds, we constructed GF combinations of highly skin-permeable epidermal growth factor (EGF), insulin-like growth factor-I (IGF-I), and platelet-derived growth factor-A (PDGF-A). We genetically conjugated a low-molecular-weight protamine (LMWP) to the N-termini of these GFs to form LMWP-EGF, LMWP-IGF-I, and LMWP-PDGF-A. Subsequently, these molecules were complexed with hyaluronic acid (HA). Combinations of native or LMWP-fused GFs significantly promoted fibroblast proliferation and the synthesis of procollagen, with a magnification of these results observed after the GFs were complexed with HA...
May 2, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28470672/stimulation-of-vascularization-of-a-subcutaneous-scaffold-applicable-for-pancreatic-islet-transplantation-enhances-immediate-post-transplant-islet-graft-function-but-not-long-term-normoglycemia
#14
Alexandra M Smink, Li Shiri, Daniël H Swart, Don T Hertsig, Bart J de Haan, Jan A A M Kamps, Leendert Schwab, Aart A van Apeldoorn, Eelco de Koning, Marijke M Faas, Jonathan R T Lakey, Paul de Vos
The liver as transplantation site for pancreatic islets is associated with significant loss of islets, which can be prevented by grafting in a prevascularized, subcutaneous scaffold. Supporting vascularization of a scaffold to limit the period of ischemia is challenging and was developed here by applying liposomes for controlled release of angiogenic factors. The angiogenic capacity of platelet-derived growth factor (PDGF), vascular endothelial growth factor (VEGF), acidic fibroblast growth factor (aFGF), and basic FGF (bFGF) were compared in a tube formation assay...
May 3, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28470327/relationship-between-coronary-tortuosity-and-plateletcrit-coronary-tortuosity-and-plateletcrit
#15
Levent Cerit, Zeynep Cerit
BACKGROUND: Coronary tortuosity (CorT) is a common angiographic finding and may be associated with myocardial ischaemia, even without coronary artery disease. Platelets play a crucial role in inflammatory and thrombotic processes and the physiopathology of cardiovascular disease. Larger platelets are more active enzymatically and have higher thrombotic ability compared to smaller platelets. Plateletcrit (PCT) provides complete information on total platelet mass. We aimed to evaluate the relationship between CorT and PCT in patients with chronic stable angina...
April 26, 2017: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/28467642/roles-of-platelet-derived-growth-factor-in-vascular-calcification
#16
REVIEW
Liu Ouyang, Kun Zhang, Jie Chen, Jingfeng Wang, Hui Huang
Vascular calcification (VC) is prevalent in aging, and patients with hypertension, chronic kidney disease (CKD) or diabetes. VC is regarded as an active and complex process that involves multiple mechanisms responsible for calcium deposition in vessel wall. In light of the complicated pathogenesis of VC, effective therapy for ameliorating VC is limited. Thus, it is urgent to explore the potential mechanisms and find new targets for the therapy of VC. Platelet-derived growth factor (PDGF), a potent mitogen and chemoattractant, has been found to disturb the vascular homeostasis by inducing inflammation, oxidative stress and phenotype transition, all of which accelerate the process of VC...
May 3, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28464698/platelet-to-lymphocyte-ratio-predicts-contrast-induced-nephropathy-in-patients-with-st-segment-elevation-myocardial-infarction-undergoing-primary-percutaneous-coronary-intervention
#17
Xi-Peng Sun, Jing Li, Wei-Wei Zhu, Dong-Bao Li, Hui Chen, Hong-Wei Li, Wen-Ming Chen, Qi Hua
We investigated the relationship between platelet to lymphocyte ratio (PLR) and contrast-induced nephropathy (CIN) in patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (pPCI). We enrolled 5719 patients in 3 tertiary hospitals from January 2005 to December 2010. The PLR was calculated as the ratio of platelet to lymphocyte counts on admission. Serum creatinine level was measured before and within 72 hours after contrast medium administration...
January 1, 2017: Angiology
https://www.readbyqxmd.com/read/28460264/flow-cytometry-analysis-reveals-different-activation-profiles-of-thrombin-or-trap-stimulated-platelets-in-db-db-mice-the-regulatory-role-of-par-3
#18
Hassan Kassassir, Karolina Siewiera, Marcin Talar, Tomasz Przygodzki, Cezary Watala
INTRODUCTION: Recent studies have shown that it may be the concentration of thrombin, which is discriminative in determining of the mechanism of platelet activation via protease activated receptors (PARs). Whether the observed phenomenon of differentiated responses of mouse platelets to various thrombin concentrations in non-diabetic db/+ and diabetic db/db mice depends upon the concerted action of various PARs, remains to be established. RESULTS: We found elevated reactivity of platelets, as well as the enhanced PAR-3 expression in response to both the used concentrations of AYPGKF in db/db mice, as compared to db/+ heterozygotes...
March 22, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28449647/pear1-is-not-a-major-susceptibility-gene-for-cardiovascular-disease-in-a-flemish-population
#19
Wen-Yi Yang, Thibault Petit, Nicholas Cauwenberghs, Zhen-Yu Zhang, Chang-Sheng Sheng, Lutgarde Thijs, Erika Salvi, Benedetta Izzi, Christophe Vandenbriele, Fang-Fei Wei, Yu-Mei Gu, Lotte Jacobs, Lorena Citterio, Simona Delli Carpini, Cristina Barlassina, Daniele Cusi, Marc F Hoylaerts, Peter Verhamme, Tatiana Kuznetsova, Jan A Staessen
BACKGROUND: Platelet Endothelial Aggregation Receptor 1 (PEAR1), a membrane protein highly expressed in platelets and endothelial cells, plays a role in platelet contact-induced activation, sustained platelet aggregation and endothelial function. Previous reports implicate PEAR1 rs12041331 as a variant influencing risk in patients with coronary heart disease. We investigated whether genetic variation in PEAR1 predicts cardiovascular outcome in a white population. METHODS: In 1938 participants enrolled in the Flemish Study on Environment, Genes and Health Outcomes (51...
April 27, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28447577/prognostic-value-of-adamts13-in-patients-with-severe-sepsis-and-septic-shock
#20
M Feroz Azfar, M Faisal Khan, S Shahid Habib, Z Al Aseri, A Mohammad Zubaidi, D Ocampo Aguila, M Owais Suriya, Hameed Ullah
PURPOSE: ADAMTS13 level was evaluated as a predictor of mortality in patients with severe sepsis and septic shock, and compared with Acute Physiology and Chronic Health Evaluation II (APACHE II) scores. METHODS: This prospective observational study was conducted in the Medical and Surgical Intensive Care Units of King Khalid University Hospital. Detailed clinical evaluations were performed on 84 patients (56.08±18.18 years of age) with severe sepsis and septic shock...
April 26, 2017: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
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