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https://www.readbyqxmd.com/read/28302011/the-pharmacological-mechanisms-and-therapeutic-activities-of-hydroxychloroquine-in-rheumatic-and-related-diseases
#1
Changfeng Hu, Lu Lu, Jie-Ping Wan, Chengping Wen
Hydroxychloroquine (HCQ) is known as one of the most fascinating synthetic antimalarial drugs during the last 50 years. It is currently among the most commonly employed medicines for the clinical treatment of rheumatic diseases, especially systemic lupus erythematosus and rheumatoid arthritis. In related mechanism studies, it has been found that HCQ possesses various immunomodulatory and anti-inflammatory activities. In addition, the effects of HCQ on anti-platelet, metabolic pathways, and antineoplasticity have also been disclosed in more recent studies...
March 16, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28293857/effect-of-cilostazol-in-treating-diabetes-associated-microvascular-complications
#2
REVIEW
Nicole J Asal, Karolina A Wojciak
PURPOSE: Cilostazol (Pletal), a phosphodiesterase-3 inhibitor, was approved in the United States in 1999 to reduce symptoms of intermittent claudication. Cyclic adenosine monophosphate levels increase from inhibition of phosphodiesterase resulting in anti-platelet, anti-inflammatory, and vasodilatory effects. Diabetes mellitus is a chronic disease that causes endothelial and platelet dysfunction leading to both microvascular and macrovascular complications. This mini-review highlights the emerging evidence suggesting benefits of using cilostazol in treating microvascular complications associated with diabetes mellitus...
March 14, 2017: Endocrine
https://www.readbyqxmd.com/read/28285408/essential-thrombocythemia-presenting-as-acute-coronary-syndrome-case-reports-and-literature-review
#3
Nanqing Xiong, Wen Gao, Junjie Pan, Xinping Luo, Haiming Shi, Jian Li
For the patients with essential thrombocythemia (ET), systemic thrombosis presents as one of the most dangerous complications. It's been widely accepted that acute coronary syndrome (ACS) is a kind of thrombotic diseases. However, there are very few case reports about ET first presenting as ACS. For some patients diagnosed as ACS, but without markedly elevated platelet, underlying ET was missed. And there are some controversies in the principles and target of treatment in those patients. We reported three cases of ACS, in which the patients who did not have common risk factors for coronary artery diseases and presented only mild atherosclerotic stenosis during coronary angiography, one of which had recurrent coronary artery thrombosis...
March 11, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28279217/hypofibrinolysis-in-diabetes-a-therapeutic-target-for-the-reduction-of-cardiovascular-risk
#4
REVIEW
Katherine Kearney, Darren Tomlinson, Kerrie Smith, Ramzi Ajjan
An enhanced thrombotic environment and premature atherosclerosis are key factors for the increased cardiovascular risk in diabetes. The occlusive vascular thrombus, formed secondary to interactions between platelets and coagulation proteins, is composed of a skeleton of fibrin fibres with cellular elements embedded in this network. Diabetes is characterised by quantitative and qualitative changes in coagulation proteins, which collectively increase resistance to fibrinolysis, consequently augmenting thrombosis risk...
March 9, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28268217/a-phenanthrene-derivative-5-7-dimethoxy-1-4-phenanthrenequinone-inhibits-cell-adhesion-molecule-expression-and-migration-in-vascular-endothelial-and-smooth-muscle-cells
#5
Huey-Ming Lo, Tsong-Long Hwang, Wen-Bin Wu
The activation of endothelial cells (ECs) and migration of vascular smooth muscle cells (VSMCs) have played a crucial role in monocyte chemotaxis/adhesion and intima thickening during vascular injury and atherosclerosis, respectively. Several phenanthrenes isolated from plants and natural products have been shown to possess different bioactivities such as anti-platelet aggregation and anti-inflammation. The current study was designated to investigate the effects of a phenanthrene derivative, 5,7-dimethoxy-1,4-phenanthrenequinone (DMPQ), on cell adhesion molecule (CAM) expression in vascular ECs and migration in VSMCs...
March 8, 2017: Pharmacology
https://www.readbyqxmd.com/read/28264594/chronic-subdural-haematomas-a-single-centre-experience-developing-an-integrated-care-pathway
#6
Smita Bapat, Jonathan Shapey, Ahmed Toma, Louise Platt, Astri Maria Valpuri Luoma
OBJECTIVE: To improve quality of care for patients presenting with chronic subdural haematoma (CSDH) by introducing a multi-disciplinary integrated care pathway. SUMMARY BACKGROUND: CSDH is a common neurological condition. Incidence rises with age and currently affects around 58/100 000 people over 70 years. Six-month mortality is high (26%), however integrated care pathways have been shown to improve patient outcomes in other surgical subspecialties. MATERIALS AND METHODS: A baseline retrospective audit completed in 2012 identified areas for improvement in patient management...
March 6, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28262230/placental-hemostasis-and-sterile-inflammation-new-insights-into-gestational-vascular-disease
#7
Shrey Kohli, Berend Isermann
Activation of the coagulation and inflammatory systems are physiologically occurring during pregnancy. However, excess activation of either system is well documented in gestational vascular diseases (GVD). GVD are placenta-mediated pregnancy complications and a major cause of feto-maternal morbidity and mortality. The causal relevance of excess coagulation and inflammatory responses for GVD remains largely unknown. Deciphering the causal relationship of excess coagulation and inflammation in GVD may allow conceptualizing new therapeutic approaches to combat GVD...
March 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28255546/aggressive-restenosis-after-percutaneous-intervention-in-two-coronary-loci-in-a-patient-with-human-immunodeficiency-virus-infection
#8
Mohammad Alkhalil, Christopher P Conlon, Houman Ashrafian, Robin P Choudhury
A 54-year-old black African woman, 22 years human immunodeficiency virus (HIV)-positive, presented with an acute coronary syndrome. She was taking two nucleoside reverse transcriptase inhibitors and two protease inhibitors. Viral load and CD4 count were stable. Angiography revealed a right coronary artery lesion, which was treated with everolimus eluting stent. She also underwent balloon angioplasty to the first diagonal. She re-presented on three different occasions and technically successful coronary intervention was performed...
February 16, 2017: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/28251951/-protective-effects-of-a-new-glutamic-acid-derivative-against-stress-after-nnos-blockade
#9
I N Tyurenkov, T A Popova, V N Perfilova, I I Prokofiev, A V Borisov, M V Kustova, G I Zaypullaev, О V Ostrovskij
We studied the effects of a new glutamic acid derivative, glufimet, on oxidative stress, activity of antioxidant enzymes, mitochondrial respiration, endothelial vasodilation and anti-platelet activity in female rats after exposure to 24-hour immobilization pain stress and 7-nitroindazole, a neuronal nitric oxide synthase (nNOS) inhibitor. A single dose administration of glufimet (29 mg/kg intraperitoneally) 10 minutes before stress exposure caused a decrease of NO metabolites in serum (by 27.2%) and heart homogenate (33...
January 2017: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/28238243/improved-pig-model-to-evaluate-heart-valve-thrombosis
#10
Umashankar Payanam Ramachandra, Sachin J Shenoy, Sabareeswaran Arumugham
BACKGROUND AND AIM OF STUDY: Although the sheep is the most acceptable animal model for heart valve evaluation, it has severe limitations for detecting heart valve thrombosis during preclinical studies. While the pig offers an alternative model and is better for detecting prosthetic valve thrombogenicity, it is not often used because of inadvertent valve thrombosis or bleeding complications. The study aim was to develop an improved pig model which can be used reliably to evaluate mechanical heart valve thrombogenicity...
September 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28236449/synthesis-molecular-docking-and-biological-evaluation-of-some-newer-2-substituted-4-benzo-d-1-3-dioxol-5-yl-6-phenylpyridazin-3-2h-ones-as-potential-anti-inflammatory-and-analgesic-agents
#11
Jyoti Singh, Vandana Saini, Ajit Kumar, Ranju Bansal
A new series of 2-substituted-4-(benzo[d][1,3]dioxol-5-yl)-6-phenylpyridazin-3(2H)-one derivatives has been synthesized and studied. The in vivo anti-inflammatory and analgesic activities of the synthesized compounds were evaluated using carrageen rat paw edema model and acetic acid induced writhing model, respectively. Side effect profile of the newly synthesized pyridazinones was assessed by gastric ulcerogenic and anti-platelet activity. The compounds were further evaluated for their inhibitory activity against cyclooxygenase enzyme (COX-1/COX-2) by in vitro colorimetric COX (ovine) inhibitor screening assay method...
February 12, 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/28202831/-development-of-intracerebral-hemorrhage-and-subarachnoid-hemorrhage-shortly-after-cerebral-infarction-onset-in-an-adult-patient-with-moyamoya-disease
#12
Jun Yoshida, Yoshitaka Kubo, Kenji Yoshida, Kohei Chida, Masakazu Kobayashi, Kuniaki Ogasawara
Here we describe the case of a patient with moyamoya disease who developed cerebral infarction followed shortly by subarachnoid hemorrhage and intracerebral hemorrhage. A 50-year-old woman presenting with sudden and transient weakness of the left lower limb was transferred to a local hospital. Magnetic resonance imaging(MRI)revealed cerebral infarction in the corpus callosum and in the bilateral frontal lobes induced by moyamoya disease. Pyramidal tract was not affected. The patient was treated with an anti-platelet agent(ozagrel sodium 160mg/day)and did not undergo intentional antihypertensive therapy...
February 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28178611/coaxial-electrospinning-multicomponent-functional-controlled-release-vascular-graft-optimization-of-graft-properties
#13
Anlin Yin, Rifang Luo, Jiukai Li, Xiumei Mo, Yunbing Wang, Xingdong Zhang
Small diameter vascular grafts possessing desirable biocompatibility and suitable mechanical properties have become an urgent clinic demand. Herein, heparin loaded fibrous grafts of collagen/chitosan/poly(l-lactic acid-co-ε-caprolactone) (PLCL) were successfully fabricated via coaxial electrospinning. By controlling the concentration of heparin and the ratio of collagen/chitosan/PLCL, most grafts had the heparin encapsulation efficiency higher than 70%, and the heparin presented sustained release for more than 45 days...
April 1, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28168845/beyond-restenosis-patients-preference-for-drug-eluting-or-bare-metal-stents
#14
Mohammed Qintar, Adnan K Chhatriwalla, Suzanne V Arnold, Fengming Tang, Donna M Buchanan, Ali Shafiq, Yashashwi Pokharel, Dave deBronkart, Javed M Ashraf, John A Spertus
OBJECTIVES: To assess patients' perspective about factors associated with stent choice. BACKGROUND: Drug eluting stents (DES) markedly reduce the risk of repeat percutaneous coronary intervention (PCI), but necessitate a longer duration of dual anti-platelet therapy (DAPT) as compared with bare metal stents (BMS). Thus, understanding patients' perspective about factors associated with stent choice is paramount. METHODS: Patients undergoing angiography rated, on a 10-point scale, the importance (1 = not important, 10 = most important) of avoiding repeat revascularization and avoiding the following potential DAPT drawbacks: bleeding/bruising, more pills/day, medication costs and delaying elective surgery...
February 7, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28154797/sex-specific-effects-of-serum-sulfate-level-and-slc13a1-nonsense-variants-on-dhea-homeostasis
#15
Christina G Tise, Leslie E Anforth, Albert E Zhou, James A Perry, Patrick F McArdle, Elizabeth A Streeten, Alan R Shuldiner, Laura M Yerges-Armstrong
CONTEXT: Sulfate is critical in the biotransformation of multiple compounds via sulfation. These compounds include neurotransmitters, proteoglycans, xenobiotics, and hormones such as dehydroepiandrosterone (DHEA). Sulfation reactions are thought to be rate-limited by endogenous sulfate concentrations. The gene, SLC13A1, encodes the sodium-sulfate cotransporter NaS1, responsible for sulfate (re)absorption in the intestines and kidneys. We previously reported two rare, non-linked, nonsense variants in SLC13A1 (R12X and W48X) associated with hyposulfatemia (P = 9 × 10(- 20))...
March 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28153724/pharmacological-assessment-of-ibuprofen-arginate-on-platelet-aggregation-and-colon-cancer-cell-killing
#16
B Ahmetaj-Shala, A Tesfai, C Constantinou, R Leszczynski, M V Chan, H Gashaw, G Galaris, S Mazi, T D Warner, N S Kirkby, J A Mitchell
Nonsteroidal anti-inflammatory drugs (NSAIDs), including ibuprofen, are amongst the most commonly used medications and produce their anti-inflammatory and analgesic benefits by blocking cyclooxygenase (COX)-2. These drugs also have the potential to prevent and treat cancer and some members of the class including ibuprofen can produce anti-platelet effects. Despite their utility, all NSAIDs are associated with increased risk of cardiovascular side effects which our recent work suggests could be mediated by increased levels of the endogenous NO synthase (NOS) inhibitor asymmetric dimethylarginine (ADMA) leading to reduced endothelial NOS activity and associated endothelial cell dysfunction...
January 31, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28150850/chewing-versus-swallowing-ticagrelor-to-accelerate-platelet-inhibitionin-acute-coronary-syndrome-the-cheers-study-for-the-platis-platelets-and-thrombosis-in-sheba-study-group
#17
Elad Asher, Shir Frydman, Moshe Katz, Ehud Regev, Avi Sabbag, Israel Mazin, Arsalan Abu-Much, Andrew Kukuy, Anna Mazo, Aharon Erez, Anat Berkovitch, Michael Narodistky, Israel Barbash, Amit Segev, Roy Beigel, Shlomi Matetzky
It was the study objective to evaluate whether chewing a 180 mg loading dose of ticagrelor versus an equal dose of traditional oral administration, enhances inhibition of platelet aggregation 1 hour (h) after administering a ticagrelor loading dose in non-ST elevation myocardial infarction (NSTEMI) patients. Dual anti-platelet therapy represents standard care for treating NSTEMI patients. Ticagrelor is a direct acting P2Y12 inhibitor and, unlike clopidogrel and prasugrel, does not require metabolic activation...
February 2, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28146050/uridine-triphosphate-thio-analogues-inhibit-platelet-p2y12-receptor-and-aggregation
#18
Dursun Gündüz, Christian Tanislav, Daniel Sedding, Mariana Parahuleva, Sentot Santoso, Christian Troidl, Christian W Hamm, Muhammad Aslam
Platelet P2Y12 is an important adenosine diphosphate (ADP) receptor that is involved in agonist-induced platelet aggregation and is a valuable target for the development of anti-platelet drugs. Here we characterise the effects of thio analogues of uridine triphosphate (UTP) on ADP-induced platelet aggregation. Using human platelet-rich plasma, we demonstrate that UTP inhibits P2Y12 but not P2Y₁ receptors and antagonises 10 µM ADP-induced platelet aggregation in a concentration-dependent manner with an IC50 value of ~250 °µM...
January 29, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28142297/pannexin1-single-nucleotide-polymorphism-and-platelet-reactivity-in-a-cohort-of-cardiovascular-patients
#19
Florian B Stierlin, Filippo Molica, Jean-Luc Reny, Brenda R Kwak, Pierre Fontana
Pannexin1 (Panx1), a membrane channel-forming protein permitting the passage of small-sized molecules, such as ATP, is expressed in human platelets. Recently, we showed that inhibiting Panx1 affects collagen-induced platelet aggregation but not aggregation triggered by other agonists. We also found that a single nucleotide polymorphism (SNP; rs1138800) in the Panx1 gene encoded for a gain-of-function channel (Panx1-400C) and was associated with enhanced collagen-induced platelet reactivity. Here, we assessed the association of this SNP with platelet reactivity in a cohort of 758 stable cardiovascular patients from the ADRIE study treated with aspirin and/or clopidogrel...
December 2017: Cell Communication & Adhesion
https://www.readbyqxmd.com/read/28142075/platelet-tissue-factor-activity-and-membrane-cholesterol-are-increased-in-hypercholesterolemia-and-normalized-by-rosuvastatin-but-not-by-atorvastatin
#20
Olga Panes, César González, Patricia Hidalgo, Juan P Valderas, Mónica Acevedo, Susana Contreras, Ximena Sánchez, Jaime Pereira, Attilio Rigotti, Diego Mezzano
BACKGROUND AND AIMS: High plasma LDL-cholesterol (LDL-C) and platelet responses have major pathogenic roles in atherothrombosis. Thus, statins and anti-platelet drugs constitute mainstays in cardiovascular prevention/treatment. However, the role of platelet tissue factor-dependent procoagulant activity (TF-PCA) has remained unexplored in hypercholesterolemia. We aimed to study platelet TF-PCA and its relationship with membrane cholesterol in vitro and in 45 hypercholesterolemic patients (HC-patients) (LDL-C >3...
February 2017: Atherosclerosis
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