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Hemorheology

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https://www.readbyqxmd.com/read/28621692/1st-hemorheology-days-puchberg-am-schneeberg-austria-july-19-21-2017
#1
Ursula Windberger
No abstract text is available yet for this article.
2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28618763/comparison-of-endothelin-and-nitric-oxide-synthase-blockers-on-hemorheological-parameters-in-endotoxemic-rats
#2
Neslihan H Dikmenoğlu Falkmarken, Okan Arihan, Alper B Iskit
BACKGROUND/AIM: Septic shock is an important health problem that vastly alters cardiovascular and hemodynamic status. Increased production of nitric oxide (NO) and endothelin is a counterpart of this endotoxemic state. This study was conducted to test the hypothesis that nonselective NO synthesis blocker (L-NAME), inducible NO synthesis blocker (L-canavanine), or endothelin receptor antagonist (bosentan) will reverse the effects of sepsis on hemorheological parameters. MATERIALS AND METHODS: Forty-eight male Sprague-Dawley rats were used in 8 groups: saline (control), endotoxin, bosentan, L-NAME, L-canavanine, endotoxin + bosentan, endotoxin + L-NAME, and endotoxin + L-canavanine...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28611858/impact-of-hemorheology-assessed-by-the-microchannel-method-on-pulsatility-index-of-the-common-carotid-artery-in-patients-with-type-2-diabetes-mellitus
#3
Takashi Hitsumoto
BACKGROUND: Type 2 diabetes mellitus is known to be closely associated with the risk of ischemic stroke. Recent clinical studies have reported that a high pulsatility index (PI) of the cerebral or carotid artery, which is estimated by ultrasonography, also reflects a risk of ischemic stroke. This cross-sectional study aimed to clarify the impact of hemorheology assessed by the microchannel method on the PI of the common carotid artery (CCA) in patients with type 2 diabetes mellitus in terms of the primary prevention of ischemic stroke...
July 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28598833/changes-of-red-blood-cell-aggregation-parameters-in-a-long-term-follow-up-of-splenectomy-spleen-autotransplantation-and-partial-or-subtotal-spleen-resections-in-a-canine-model
#4
Iren Miko, Norbert Nemeth, Katalin Peto, Andrea Furka, Laszlo Toth, Istvan Furka
BACKGROUND: Decrease or loss in splenic filtration function may influence the hemorheological state. OBJECTIVE: To follow-up the long-term effects of splenectomy, spleen autotransplantation and spleen resections on red blood cell aggregation in a canine model. METHODS: Beagle dogs were subjected to control (n = 6), splenectomy (SE, n = 4), spleen autotransplantation (AU, Furka's spleen-chip method, n = 8) or partial and subtotal spleen resection (n = 4/each) groups, and followed-up for 18 postoperative (p...
June 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28562578/a-comparative-study-of-danhong-injection-and-salvia-miltiorrhiza-injection-in-the-treatment-of-cerebral-infarction-a-systematic-review-and-meta-analysis
#5
Kaihuan Wang, Dan Zhang, Jiarui Wu, Shi Liu, Xiaomeng Zhang, Bing Zhang
BACKGROUND: To evaluate systematically the clinical effectiveness and safety of Danhong injection (DI) and Salvia miltiorrhiza injection (SMI) in the treatment of cerebral infarction. METHODS: A literature search was conducted for retrieving randomized controlled trials (RCTs) on cerebral infarction treated by Danhong injection and SMI in the Cochrane Library, PubMed, Embase, China Biology Medicine disc, China National Knowledge Infrastructure Database, China Science and Technology Journal Database, Wanfang Database up to January 22, 2017...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28550239/clinical-conditions-responsible-for-hyperviscosity-and-skin-ulcers-complications
#6
Gregorio Caimi, Baldassare Canino, Rosalia Lo Presti, Caterina Urso, Eugenia Hopps
In this brief review, we have examined some clinical conditions that result to be associated to an altered hemorheological profile and at times accompanied by skin ulcers. This skin condition may be observed in patients with the following condtions, such as primary polycythemic hyperviscosity (polycythemia, thrombocytemia) treated with hydroxyurea, primary plasma hyperviscosity (multiple myeloma, cryoglobulinemia, cryofibrinogenemia, dysfibrinogenemia, and connective tissue diseases), primary sclerocythemic hyperviscosity (hereditary spherocytosis, thalassemia, and sickle cell disease)...
May 19, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28523173/thrombotic-responses-to-coronary-stents-bioresorbable-scaffolds-and-the-kounis-hypersensitivity-associated-acute-thrombotic-syndrome
#7
REVIEW
Nicholas G Kounis, Ioanna Koniari, Anastasios Roumeliotis, Grigorios Tsigas, George Soufras, Nicholas Grapsas, Periklis Davlouros, George Hahalis
Percutaneous transluminal coronary angioplasty with coronary stent implantation is a life-saving medical procedure that has become, nowadays, the most frequent performed therapeutic procedure in medicine. Plain balloon angioplasty, bare metal stents, first and second generation drug-eluting stents, bioresorbable and bioabsorbable scaffolds have offered diachronically a great advance against coronary artery disease and have enriched our medical armamentarium. Stented areas constitute vulnerable sites for endothelial damage, endothelial dysfunction, flow turbulence, hemorheologic changes, platelet dysfunction, coagulation changes and fibrinolytic disturbances...
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28511905/hemorheological-alterations-in-adults-with-prediabetes-identified-by-hemoglobin-a1c-levels
#8
M A Marini, T V Fiorentino, F Andreozzi, G C Mannino, E Succurro, A Sciacqua, F Perticone, G Sesti
BACKGROUND AND AIMS: A link between increased blood viscosity and type 2 diabetes has been previously reported. Herein, we investigated the association of blood viscosity with prediabetes, identified by glycated hemoglobin A1c (HbA1c) according to the new American Diabetes Association criteria, and subclinical atherosclerosis. METHODS AND RESULTS: The study cohort includes 1136 non-diabetic adults submitted to anthropometrical evaluation, an oral glucose tolerance test and ultrasound measurement of carotid intima-media thickness (IMT)...
April 21, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28496179/microfluidic-system-for-monitoring-temporal-variations-of-hemorheological-properties-and-platelet-adhesion-in-lps-injected-rats
#9
Eunseop Yeom, Hye Mi Kim, Jun Hong Park, Woorak Choi, Junsang Doh, Sang Joon Lee
Sepsis causes multiple organs failures and eventually death. Changes in blood constituents due to sepsis lead to alterations in hemorheological properties, and cell adhesiveness. In this study, a new microfluidic system is proposed to measure temporal variations in biophysical properties of blood after injecting lipopolysaccharide (LPS) into a rat extracorporeal model under ex vivo condition. To measure blood viscosity, the interfacial line between blood and a reference fluid is formed in a Y-shaped channel...
May 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28411485/cerebral-and-muscle-microvascular-oxygenation-in-children-with-sickle-cell-disease-influence-of-hematology-hemorheology-and-vasomotion
#10
Keyne Charlot, Sophie Antoine-Jonville, Berenike Moeckesch, Stéphane Jumet, Marc Romana, Xavier Waltz, Lydia Divialle-Doumdo, Marie-Dominique Hardy-Dessources, Marie Petras, Benoît Tressières, Vanessa Tarer, Olivier Hue, Maryse Etienne-Julan, Philippe Connes
The present study investigated cerebral and muscle hemoglobin oxygen saturation (tissue oxygen index, TOI) in children with sickle cell anemia (SS), sickle cell hemoglobin C disease (SC) and healthy children (AA). TOI was measured by near-infrared spectroscopy (NIRS) and spectral analysis of the TOI variability was used to assess flowmotion and vasomotion. Arterial oxyhemoglobin saturation (SpO2), hemorheological and hematological parameters were also measured in SS and SC children. Both TOI were lower in SS compared to both AA and SC children, with SC exhibiting lower values than AA children...
June 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28396938/pravastatin-improves-postprandial-endothelial-dysfunction-and-hemorheological-deterioration-in-patients-with-effort-angina-pectoris
#11
Tomio Umemoto, Takanori Yasu, Kenshiro Arao, Nahoko Ikeda, Yasuto Horie, Hiroyuki Sugimura, Masanobu Kawakami, Hideo Fujita, Shin-Ichi Momomura
Postprandial hypertriglyceridemia and hyperglycemia may promote endothelial and hemorheological dysfunction. The present study investigated the effects of pravastatin on endothelial function and hemorheology in patients with stable angina pectoris (AP) before and after eating a test meal. We recruited 26 patients with stable AP who had impaired glucose tolerance and mild dyslipidemia and six healthy men as controls to assess endothelial function and hemorheological behavior. In each group, we measured forearm blood flow (FBF) during post-ischemic reactive hyperemia and obtained blood samples before and 2 h after the test meal...
April 10, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28390781/clinical-disorders-responsible-for-plasma-hyperviscosity-and-skin-complications
#12
REVIEW
Gregorio Caimi, Melania Carlisi, Caterina Urso, Rosalia Lo Presti, Eugenia Hopps
In this brief review, we have examined some clinical disorders which are associated to an altered hemorheological profile and at times accompanied by skin ulcers. This skin condition may be, in fact, observed in patients with primary plasma hyperviscosity such as multiple myeloma, Waldenstrom macroglobulinemia, cryoglobulinemia, cryofibrinogenemia, dysfibrinogenemia and connective tissue diseases. It must be underlined that the altered hemorheological pattern is not the only responsible for this skin complication but, as it worsens the microcirculatory flow, it contributes to determine the occurrence of the skin ulcers...
April 5, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28388248/the-effects-of-particle-size-shape-density-and-flow-characteristics-on-particle-margination-to-vascular-walls-in-cardiovascular-diseases
#13
Hang T Ta, Nghia P Truong, Andrew K Whittaker, Thomas P Davis, Karlheinz Peter
Vascular-targeted drug delivery is a promising approach for the treatment of atherosclerosis, due to the vast involvement of endothelium in the initiation and growth of plaque, a characteristic of atherosclerosis. One of the major challenges in carrier design for targeting cardiovascular diseases (CVD) is that carriers must be able to navigate the circulation system and efficiently marginate to the endothelium in order to interact with the target receptors. Areas covered: This review draws on studies that have focused on the role of particle size, shape, and density (along with flow hemodynamics and hemorheology) on the localization of the particles to activated endothelial cell surfaces and vascular walls under different flow conditions, especially those relevant to atherosclerosis...
April 13, 2017: Expert Opinion on Drug Delivery
https://www.readbyqxmd.com/read/28367226/protective-effect-of-tang-wang-one-decoction-on-the-retinal-vessels-of-diabetic-rats
#14
Xinyun Kou, Shufei Yang, Yali Qin, Chao Yang, Tingting Deng, Dan Luo, Ming Jin
Objective. This study aimed to determine the influence of Tang Wang One Decoction (TWOD) on the retinal vessels of diabetic rats. Methods. The hemorheology of diabetic rats was observed. Morphological studies of retinal vessels were conducted using optical microscopy and electron microscopy. Immunological histochemistry assay was used to measure the expression levels of MMP-9, occludin, and claudin-5. Results. Obvious pathological damage was observed in the retinal vessels of diabetic rats. TWOD positively affected the hemorheology and morphology of retinal vessels...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28359197/mechanisms-of-traditional-chinese-medicine-in-the-treatment-of-mammary-gland-hyperplasia
#15
Xiaoliang Li, Ping Xin, Changfu Wang, Zhibin Wang, Qiuhong Wang, Haixue Kuang
Mammary gland hyperplasia (MGH) occurs with high frequency among middle-aged women and is closely related to breast cancer. The treatment of this disease has become a research hotspot. Many patients with MGH are worried about the potential side effects of the synthetic drugs they are on. Thus, they seek alternative therapy, such as traditional Chinese medicine (TCM). In recent years, along with the Chinese herbs and its active ingredients, TCM compounds have been widely accepted and implemented in the treatment of MGH, whose mechanism hitherto is not completely clear...
March 30, 2017: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/28349880/anti-inflammatory-and-antithrombotic-effects-of-nicotine-exposure-in-oral-contraceptive-induced-insulin-resistance-are-glucocorticoid-independent
#16
Lawrence Aderemi Olatunji, Olugbenga Samuel Michael, Oluwaseun Aremu Adeyanju, Emmanuel Damilare Areola, Ayodele Olufemi Soladoye
BACKGROUND: Reports showed that estrogen-progestin oral contraceptive (COC) or tobacco smoking causes increased risk of cardiovascular diseases (CVD) in premenopausal women. Studies also suggest that nicotine, a major tobacco alkaloid, may worsen or improve atherothrombotic CVD. Altered hemorheology, prothrombotic and pro-inflammatory biomarkers, have been implicated in the development of atherothrombotic CVD events. However, the effect of non-smoking nicotine exposure on these biomarkers during COC treatment is not yet established...
June 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28211801/effect-of-shear-induced-platelet-activation-on-red-blood-cell-aggregation
#17
Hoyoon Lee, Kisung Lee, Byoung-Kwon Lee, Alexander V Priezzhev, Sehyun Shin
Mechanical shear stress is one of the important factors for platelet activation. Although shear stress has been frequently utilized in many applications of diagnostic bio-equipment, there has been little consideration as to whether shear stress induces platelet activation and consequently alters hemorheological characteristics. Therefore, we investigated the effect of shear-induced platelet activation on red blood cell (RBC) aggregation. The hypothesis of the present research is as follows: Platelets activated by high shear stress secrete substances, which can affect hemorheological characteristics to promote RBC aggregation...
February 17, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28158274/alterations-of-erythrocyte-rheology-and-cellular-susceptibility-in-end-stage-renal-disease-effects-of-peritoneal-dialysis
#18
Nesrin Zeynep Ertan, Semra Bozfakioglu, Elif Ugurel, Mukaddes Sinan, Ozlem Yalcin
In this study, we investigated the effects of peritoneal dialysis on hemorheological and hematological parameters and their relations with oxidant and antioxidant status of uremic patients. Hemorheological parameters (erythrocyte deformability, erythrocyte aggregation, osmotic deformability, blood and plasma viscosity) were measured in patients with renal insufficiency undergoing peritoneal dialysis (PD) and volunteers. Erythrocyte deformability, osmotic deformability and aggregation in both autologous plasma and 3% dextran 70 were measured by laser diffraction ektacytometry...
2017: PloS One
https://www.readbyqxmd.com/read/28145890/self-assembled-nano-balls-released-from-multistage-vector-for-cancer-therapy
#19
Jin Qian, Xiaojun Xia, Yan Xie
The efficacy of cancer drugs is often compromised due to the existence of biological barriers such as nonspecific distribution, hemorheological flow limitation and endothelial extravasation, impaired delivery across tumor cell membranes and tissue, and multidrug resistance. To overcome these obstacles, Xu et al developed an injectable nanoparticle generator platform to negotiate with the biological barriers and enable self-assembly of nano-balls in situ in order to maximize drug accumulation inside the tumor tissues and hence the therapeutic efficacy...
March 24, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28079842/increased-erythrocyte-aggregation-and-oxidative-stress-in-patients-with-idiopathic-interstitial-pneumonia
#20
Erhan Ugurlu, Emine Kilic-Toprak, Goksel Altinisik, Ozgen Kilic-Erkek, Betul Cengiz, Vural Kucukatay, Hande Senol, Ismail Hakki Akbudak, Yusuf Ekbic, Melek Bor-Kucukatay
BACKGROUND: Hemorheological properties are important determinants of tissue oxygenation. Although hemorheological alterations in various lung diseases have been well-defined, no information is available about the effects of idiopathic interstitial pneumonia (IIP) on hemorheological parameters. OBJECTIVES: The aim of this study was to investigate hemorheological parameters (erythrocyte deformability, aggregation, and plasma viscosity -PV) and associated oxidative stress indices in patients with IIP...
December 23, 2016: Sarcoidosis, Vasculitis, and Diffuse Lung Diseases: Official Journal of WASOG
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