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1.
Clin Hemorheol Microcirc ; 71(1): 27-38, 2019.
Article in English | MEDLINE | ID: mdl-30010113

ABSTRACT

BACKGROUND: Selective Serotonin Reuptake Inhibitors (SSRIs), antidepressants commonly used in cardiovascular diseases (CVDs), inhibit the re-uptake of serotonin not only into neurons but also into platelets. Hence they increase the level of serotonin in plasma. OBJECTIVE: This study was aimed to clarify the effects of two selected SSRIs on plasma serotonin level, hemorheological parameters (hematocrit, erythrocyte deformability, erythrocyte aggregation and plasma viscosity) and selected oxidative stress markers (MDA, GSH, GSSG levels in plasma and erythrocytes). METHODS: Two different SSRIs (Fluvoxamine and Sertraline) were administered to male Sprague-Dawley rats in acute (5 days) or chronic fashion (21 days) at 20 mg/kg/day dose. RESULTS: Aggregation amplitude (AMP) decreased significantly in the chronic sertraline and acute fluvoxamine groups; aggregation half time (t1/2) decreased significantly in the chronic fluvoxamine group. Biochemical parameters indicating oxidative stress significantly increased in the chronic sertraline group. CONCLUSIONS: Since SSRI's are commonly used in patients with CVDs, complementary studies are needed to assess the impact of such changes in hemorheological parameters on the risk for CVD, and to reveal the effects of other SSRIs on hemorheological parameters.


Subject(s)
Hemorheology/immunology , Selective Serotonin Reuptake Inhibitors/therapeutic use , Animals , Humans , Male , Rats , Rats, Sprague-Dawley , Selective Serotonin Reuptake Inhibitors/pharmacology
2.
Clin Hemorheol Microcirc ; 65(4): 309-315, 2017.
Article in English | MEDLINE | ID: mdl-27814281

ABSTRACT

AIM: To evaluate hemorheological parameters in patients with fibromyalgia syndrome (FMS) in order to elucidate the etiology of the disease. METHODS: Twenty-three adult FMS patients and 20 healthy controls were enrolled in the study. Diabetics, hypertensives and those with any rheumatological disorder or use drugs or smoking cigarette were excluded from the study. Following parameters were analyzed in each subject; erythrocyte deformability, erythrocyte aggregation, plasma viscosity, complete blood count, fasting blood glucose, fibrinogen, albumin, globulin and lipid profile. RESULTS: Erythrocyte elongation indices indicating deformability of erythrocytes were higher in FMS patients (0.564±0.002 at 16.87 mPa and 0.605±0.002 at 30 mPa shear rate) than controls (0.558±0.001 at 16.87 mPa and 0.600±0.003 at 30 mPa shear rate). Erythrocyte aggregation speed was higher in FMS patients (2.1±0.1 s) than controls (2.3±0.2 s). Erythrocyte aggregation index was also higher in FMS patients (65.5±1.3) than controls (62.9±1.5). Erythrocyte aggregation amplitude and plasma viscosity values were similar in both groups (both p > 0.05). Among the complete blood count and biochemical parameters, only albumin levels were lower in the FM patients than controls (p < 0.05). CONCLUSION: Our results indicate higher erythrocyte deformability and quicker erythrocyte aggregation in FM patients.


Subject(s)
Fibromyalgia/diagnosis , Hemorheology/immunology , Adult , Blood Viscosity , Erythrocyte Aggregation , Erythrocyte Deformability , Female , Fibromyalgia/pathology , Humans , Male , Middle Aged , Syndrome
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