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Clinical Hemorheology and Microcirculation

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https://www.readbyqxmd.com/read/29332034/microhemodynamic-indices-to-evaluate-the-effectiveness-of-herbal-medicine-in-diabetes-a-comparison-between-alpha-mangostin-and-curcumin-in-the-retina-of-type-2-diabetic-rats
#1
Amporn Jariyapongskul, Chonticha Areebambud, Niimi Hideyuki
OBJECTIVE: This study was aimed to develop microhemodynamic indices to evaluate the effectiveness of herbal medicine in diabetic tissues. METHODS: Male Sprague-Dawley rats were divided into four groups: normal control rats (Control), type 2 diabetic rats without (DM2) and with supplementation of alpha mangostin (DM2-MG) or curcumin (DM2-CUR). Alpha-mangostin or curcumin (200 mg/kg BW) were fed followed by i.p. injection of streptozotocin (STZ). Mean arterial pressure (MAP) and retinal blood flow (RBF) were measured and retinal flow resistance (RFR) was calculated...
January 10, 2018: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036804/rheopheresis-as-a-causal-therapy-option-for-systemic-scleroderma-ssc
#2
Stine Lutze, G Daeschlein, W Konschake, Michael Jünger
A complex pathomechanism accounts systemic sclerosis as a form of collagenosis. A triad of vasculopathy, autoinflammation, and dysbalance of the fibroblast function can be seen as cause, as well as symptomatic appearance. Comparative with other collagenoses, e.g. Lupus erythematosus, vasculopathy, instead of autoinflammation, appears to be clinically important in systemic scleroderma. The fact that autoinflammation does not represent the major role in the maintenance of the disease is also evident by the lack of therapeutic effects of classical systemic immunosuppressants...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036803/extracellular-atp-activates-enos-and-increases-intracellular-no-generation-in-red-blood-cells
#3
Pinar Ulker, Nur Özen, Günel Abdullayeva, Sadi Köksoy, Nazmi Yaraş, Filiz Basrali
BACKGROUND: It has been well documented that ATP activates NOS enzymes and causes increased NO production in several cell types. Although RBC known to possesses eNOS enzyme activity, it has not been investigated whether RBC eNOS could be induced by extracellular ATP. OBJECTIVE: The aim of the present study is to evaluate extracellular ATP mediated eNOS activation and NO production in RBC. METHODS: RBC packed were isolated from healthy volunteers and re-suspended in Hepes solution at a hematocrit of 0...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036802/pharmacosimulation-of-interruptions-and-its-solution-in-intravenous-administration-of-cangrelor
#4
Maryna Masyuk, Nadia Heramvand, Johanna M Muessig, Amir M Nia, Amin Polzin, Markus Kollmann, Malte Kelm, Christian Jung
BACKGROUNDCangrelor is an intravenous adenosine diphosphate (ADP) P2Y12 receptor antagonist, which has to be administered as a bolus followed by immediate infusion. Nevertheless, in clinical routine deviations from the correct practice, such as delayed infusion onset or interruptions during infusion, may occur. OBJECTIVE: The objective of the present study was to investigate the impact of administration delays on cangrelor concentration in a pharmacological simulation setting and to give possible solutions for the clinical practice...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036801/misinterpretation-of-the-sublingual-microcirculation-during-therapy-with-levosimendan
#5
Michael Hessler, Philip-Helge Arnemann, Sebastian Rehberg, Christian Ertmer
There is increasing evidence in the literature that preoperative treatment with levosimendan optimizes cardiopulmonary haemodynamics in patients scheduled for the implantation of a Left Ventricular Assist Device (LVAD). The present case report describes changes in sublingual microcirculation using incident dark field video microscopy in a patient, who received a continuous infusion of 0.5 mg/h levosimendan 12 h before LVAD implantation. Despite no evident macrohaemodynamic or metabolic changes, there was a dramatic reduction in total vessel density and perfused vessel density suggesting a deterioration of microcirculation according to the consensus conference criteria in vessels smaller than 20 μm in diameter...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036800/quantitative-parameters-of-contrast-enhanced-ultrasonography-for-assessment-of-renal-pathology-a-preliminary-study-in-chronic-kidney-disease
#6
Wen-Qi Yang, Shan Mou, Yao Xu, Li Xu, Feng-Hua Li, Hong-Li Li
No abstract text is available yet for this article.
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036799/hemorheological-parameters-in-monoclonal-gammopathy-of-undetermined-significance-mgus
#7
G Caimi, E Hopps, M Carlisi, M Montana, E Gallà, R Lo Presti, S Siragusa
There is scarcity of information about the hemorheological pattern in subjects with Monoclonal Gammopathy of Undetermined Significance (MGUS). This preliminary research is focused on the behaviour of whole-blood and plasma viscosity, haematocrit and erythrocyte deformability in the above clinical condition. We enrolled 21 MGUS subjects (10 women and 11 men; mean age 66.4 ± 11.6 years). In fasting venous blood we examined whole-blood and plasma viscosity at high and low shear rates, haematocrit, the ratios between whole-blood viscosity (at high and low shear rate) and haematocrit × 100, the ratio between plasma viscosity at low and high shear rate, and the erythrocyte deformability expressed as elongation index...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036798/no-effect-on-the-short-term-of-a-decrease-in-blood-viscosity-on-insulin-resistance
#8
Agostino Gnasso, Michele Cacia, Claudio Cortese, Elena Succurro, Francesco Andreozzi, Claudio Carallo, Concetta Irace
BACKGROUND: Blood viscosity (BV) might influence glucose delivery to peripheral tissues and play an important role in insulin resistance and diabetes mellitus. However, the exact relationship between BV and insulin resistance is not yet clear. OBJECTIVES: Aim of the present study is to evaluate the effects of the acute reduction in BV on insulin resistance, in healthy male subjects. METHODS: Fifteen healthy male blood donors have been studied before and 48 hours after blood donation...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036797/effects-of-venotonic-drugs-on-the%C3%A2-microcirculation-comparison-between-ruscus-extract-and-micronized-diosmine1
#9
Fatima Zely Garcia de Almeida Cyrino, Daniela Signorelli Balthazar, Fernando Lencastre Sicuro, Eliete Bouskela
BACKGROUND: Chronic venous disease of the lower limbs is a common public health problem worldwide with negative impact on quality of life and results with drugs used to treat it are sparse, probably due to lack of good experimental models. OBJECTIVE: In this investigation we have tested the effects of two commonly used venotonic substances, Ruscus extract and micronized diosmine, on the microcirculation in vivo. METHODS: These substances were given orally, by gavage, during two weeks, twice daily and observations were made using the hamster cheek pouch preparation...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036796/intestinal-ischemia-reperfusion-leads-to-early-systemic-micro-rheological-and-multiorgan-microcirculatory-alterations-in-the-rat
#10
Anita Mester, Zsuzsanna Magyar, Viktoria Sogor, Bence Tanczos, Yoav Stark, Konstantin Cherniavsky, Laszlo Bidiga, Katalin Peto, Norbert Nemeth
BACKGROUND: Intestinal ischemia-reperfusion (I/R) is a potentially life-threatening situation and its pathomechanism is not fully understood yet. OBJECTIVE: To investigate the early micro-rheological, microcirculatory and morphological consequences of intestinal I/R in a rat model. METHODS: CD rats were anesthetized and subjected to Control (n = 7) or I/R (n = 7) groups. Left femoral artery cannulation and median laparotomy were performed...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036795/erythrocyte-deformability-and-hemorheological-profile-in-multiple-myeloma
#11
G Caimi, M Carlisi, M Montana, E Gallà, R Lo Presti, E Hopps, S Siragusa
The hemorheological profile in multiple myeloma (MM) has been extensively studied. Our investigation regarded the behavior of whole-blood viscosity, plasma viscosity and erythrocyte deformability in MM. We enrolled 24 MM patients; 13 of them had been recently diagnosed and were at the initial stage of therapy, 6 were on consolidation/conservation therapy and 5 had achieved a complete remission. On fasting venous blood we evaluated whole-blood and plasma viscosity at high and low shear rates, haematocrit, the ratios between whole-blood viscosity (at high and low shear rate) and haematocrit×100, the ratio between plasma viscosity at low and high shear rate and the erythrocyte deformability examined by using laser diffractometry and expressed as elongation index...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036794/assessing-the-effect-of-different-operation-techniques-on-postoperative-duplex-ultrasound-quality-after-carotid-endarterectomy
#12
E Grambow, T Heller, P Wieneke, C Weiß, E Klar, M Weinrich
BACKGROUND: Duplex ultrasound is the first choice in diagnostics and surveillance of stenoses of the internal carotid arteries before and even after surgery. Therefore, the quality of duplex ultrasound is crucial to investigate these vascular pathologies. OBJECTIVE: Aim of this study was the evaluation whether different surgical techniques affect the postoperative quality of duplex ultrasound. METHODS: In a time period from January to May 2015 duplex ultrasound of the cervical vessels was performed in 75 patients after unilateral endarterectomy of the internal carotid artery at our department between 2006 and 2012...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29036793/clinical-relevance-of-early-sublingual-microcirculation-monitoring-in-septic-shock-patients
#13
Nivin Sharawy, Reham Mahrous, Sara Whynot, Ronald George, Christian Lehmann
INTRODUCTION: Although microcirculation dysfunction plays unique role in septic shock, translation of microcirculation to clinical practices is limited by current semi-quantities analysis and unclear clinical relevance of microcirculation monitoring. Our aim was to critically evaluate the characteristic nature and relevant clinical important of microcirculation. EVIDENCE ACQUISITION: Pubmed (2000 to August 2015) were searched to identify observation, case-control, intervention and randomized clinical studies evaluating the relationship between microcirculation alterations and mortality, morbidity and drug responses...
October 7, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28922148/glycocalyx-in-vivo-measurement
#14
Vladimir Cerny, David Astapenko, Ian Burkovskiy, Radek Hyspler, Alena Ticha, Mary Ann Trevors, Christian Lehmann
No abstract text is available yet for this article.
September 11, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28922147/microcirculation-research-in-community-hospitals-challenges-and-chances
#15
Hartmut Kern, Nivin Sharawi, Joel Sardinha, Christian Lehmann
No abstract text is available yet for this article.
September 11, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28922146/preliminary-clinical-evaluation-of-automated-analysis-of-the-sublingual-microcirculation-in-the-assessment-of-patients-with-septic-shock-comparison-of-automated-versus-semi-automated-software
#16
Nivin Sharawy, Ahmed Mukhtar, Sufia Islam, Reham Mahrous, Hassan Mohamed, Mohamed Ali, Amr Abd El Hakeem, Osama Hossny, Amera Refaa, Ahmed Saka, Vladimir Cerny, Sara Whynot, Ron George, Christian Lehmann
INTRODUCTION: The outcome of patients in septic shock has been shown to be related to changes within the microcirculation. Modern imaging technologies are available to generate high resolution video recordings of the microcirculation in humans. However, evaluation of the microcirculation is not yet implemented in the routine clinical monitoring of critically ill patients. This is mainly due to large amount of time and user interaction required by the current video analysis software. The aim of this study was to validate a newly developed automated method (CCTools®) for microcirculatory analysis of sublingual capillary perfusion in septic patients in comparison to standard semi-automated software (AVA3®)...
September 11, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28922145/new-developments-in-clinical-microcirculation-imaging
#17
Christian Lehmann
No abstract text is available yet for this article.
September 11, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28922144/short-term-hypoxia-and-vasa-recta-function-in-kidney-slices
#18
D Braun, S Dietze, T M J Pahlitzsch, I C Wennysia, P B Persson, M Ludwig, A Patzak
BACKGROUND: Vasa recta (VR) supply the inner part of outer renal medulla an area at risk for hypoxic damages. OBJECTIVE: We hypothesize increased vasoreactivity after hypoxia/re-oxygenation (H/R) in VR, which might contribute to the reduced medullary perfusion after an ischemic event. METHODS: Live kidney slices (200μm) from SD rats were used for functional experiments. TUNEL assay and H&E staining were used to estimate slice viability. Kidney slices were treated with carbogen or hypoxia (1% O2) for 60 or 90 min and vasoreactivity to Ang II (10-7 M) was recorded by DIC microscopy after re-oxygenation with carbogen...
September 11, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28922143/leukocyte-reduced-platelet-rich-plasma-stimulates-the-in-vitro-proliferation-of-adipose-tissue-derived-mesenchymal-stem-cells-depending-on-pdgf-signaling
#19
Siegmund Lang, Marietta Herrmann, Christian Pfeifer, Gero Brockhoff, Johannes Zellner, Michael Nerlich, Peter Angele, Lukas Prantl, Sebastian Gehmert, Markus Loibl
BACKGROUND: Platelet-rich Plasma (PRP) is suggested as xenoprotein-free cell-culture medium replacement for animal-derived supplements. OBJECTIVE: The aim of this study was to investigate PRP-triggered signaling in adipose derived mesenchymal stem cells (ASCs). METHODS: PRP was obtained from 4 male patients. We incubated ASCs in α-MEM with different Platelet derived growth factor (PDGF) subtypes or 10% or 20% pooled PRP or 20% fetal calf serum (FCS) prior to determination of the S-phase fraction (SPF)...
September 11, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28922142/reduced-amputation-rate-with-isovolemic-hemodilution-in-critical-limb-ischemia-patients
#20
Doosang Kim, Daniel J Cho, Young I Cho
AIMS: Critical limb ischemia (CLI) patients are characterized by intractable pain in spite of medication, non-healing ulcers, and gangrene. The objective of this study was to investigate whether or not isovolemic hemodilution treatment can reduce the rate of major amputations in CLI. METHODS: 28 patients were studied who had tissue loss on Rutherford Grade III, Category 5 or 6. The subjects were divided into two arms: standard-of-care, conventional therapy (CT) (n = 15) as a control group and hemodilution therapy (HT) (n = 13) as a study group...
September 11, 2017: Clinical Hemorheology and Microcirculation
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