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1.
Bratisl Lek Listy ; 118(6): 355-360, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28664745

RESUMO

BACKGROUND: The purpose of this study was to evaluate plasma pentraxin 3 (PTX3) and growth differentiation factor-15 (GDF-15) concentrations in adolescent male swimmers and compare any possible interactions with canonical biochemical parameters. METHODS: Twenty-six adolescent male swimmers and 29 gender- and age-matched sedentary controls participated in this study. Fasting blood samples were taken from the participants. Biochemical values and plasma PTX3 and GDF-15 levels were measured. RESULTS: Plasma PTX-3 levels were markedly higher in the adolescent male swimmers than in the sedentary controls (378.44 ± 173.93 vs 257.82 ± 103.20 pg mL-1, p = 0.002). There was no significant difference in GDF-15 levels between the two groups (186.12 ± 40.65 vs 203.60 ± 36.77 pg mL-1 in the swimmers and the sedentary, respectively, P = 0.068). Relationship between PTX3 and GDF-15 was linear. CONCLUSIONS: This is the first study showing that adolescent male swimmers have higher PTX3 levels than sedentary controls and that there is a linear relationship between PTX3 and GDF-15 (Tab. 3, Fig. 2, Ref. 26).


Assuntos
Atletas , Proteína C-Reativa/metabolismo , Fator 15 de Diferenciação de Crescimento/metabolismo , Comportamento Sedentário , Componente Amiloide P Sérico/metabolismo , Natação , Adolescente , Biomarcadores/metabolismo , Estudos de Casos e Controles , Criança , Jejum , Humanos , Masculino
2.
Horm Metab Res ; 48(10): 653-657, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27632149

RESUMO

Irisin is a myokine/adipokine with potential role in obesity and diabetes. The purpose of the present study was to assess irisin levels and its association with insulin resistance and oxidative stress markers in premenopausal normal-weight and obese women. Ten obese (mean body mass index, 32.65±3.04 kg m-2) and 10 normal-weight (23.00±2.23 kg m-2) premenopausal women were involved in the present study. Anthropometric, and body composition parameters, blood chemistry, oxidative stress markers, and irisin concentrations of different groups were measured. Correlation analyses were performed between irisin and other measured parameters. Plasma irisin levels were lower in the obese group than the normal-weight group (p<0.05). Glucose, homeostasis model assessment index (HOMA-IR), and MDA levels in the obese group were higher than that in the normal-weight group (p<0.05). Plasma irisin was negatively correlated with insulin (r=-0.648, p<0.05), HOMA-IR (r=-0.664, p<0.05) and MDA (r=-0.690, p<0.05). These data suggest that irisin levels are decreased with obesity, and irisin may have an antidiabetic and antioxidant effects.


Assuntos
Biomarcadores/sangue , Fibronectinas/sangue , Resistência à Insulina , Obesidade/complicações , Estresse Oxidativo , Adulto , Estudos de Casos e Controles , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Obesidade/sangue , Prognóstico
3.
Bratisl Lek Listy ; 115(12): 757-60, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25520223

RESUMO

OBJECTIVE: Preemptive analgesia is an antinociceptive treatment that prevents central sensitization. Antinociceptive effects of diclofenac are well-known. The aim of this study was to investigate preemptive analgesic effects of curcumin and diclofenac, before acute and inflammatory induced pain in rat model. MATERIAL AND METHODS: Fourty eight old female (n = 6 in each group) Wistar Albino rats were included in the study. Paw movements in response to paw flinching in response to formalin injection or thermal stimulation were compared after curcumin (400 mg kg-(1), p.o.) and diclofenac (10 mg kg(-1), i.p.) administration. Saline was used as a control. The solvent ethanol was administered in another group of rats. Preemptive analgesic effect was significant in both tests when curcumin and diclofenac was administrated before the pain stimuli. RESULTS: Oral administration of curcumin and intraperitoneal injection of diclofenac increase the response time in hot plate test and decrease the number of flinches in formalin test (p < 0.001 vs p < 0.05). CONCLUSION: These results suggest that curcumin had preemptive analgesic effects on acute thermal, and inflammatory induced pain in rats as diclofenac (Fig. 2, Ref. 35).


Assuntos
Analgésicos/uso terapêutico , Curcumina/uso terapêutico , Diclofenaco/uso terapêutico , Dor Pós-Operatória/prevenção & controle , Administração Oral , Animais , Anti-Inflamatórios não Esteroides/uso terapêutico , Feminino , Injeções Intraperitoneais , Medição da Dor , Ratos Wistar
4.
Bratisl Lek Listy ; 115(7): 416-21, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25077364

RESUMO

BACKGROUND: To investigate the effects of exercise preconditioning on oxidative injury in the intestinal tissue of rats. METHODS: Sixty male Wistar rats were randomly divided into six groups as sham (n = 10), ischemia-reperfusion (n = 10), exercise (n = 10), exercise plus ischemia-reperfusion (n = 10), ischemic preconditioning (n = 10), and ischemic preconditioning plus ischemia-reperfusion groups (n = 10). Tissue levels of malondialdehyde and activities of myeloperoxidase and superoxide dismutase, and serum levels of tumor necrosis factor-alpha and interleukin-6 were measured. Intestinal tissue histopathology was also evaluated by light microscopy. RESULTS: Tumor necrosis factor-alpha concentrations significantly decreased in the exercise group compared to the sham group (p < 0.05). Myeloperoxidase activity significantly increased and superoxide dismutase activity significantly decreased in ischemia-reperfusion group compared to the sham group (p < 0.05). Superoxide dismutase activity in the ischemic preconditioning and ischemic preconditioning plus ischemia-reperfusion groups were significantly higher compared to the ischemia-reperfusion and exercise groups (p < 0.05). Histopathologically, intestinal injury significantly attenuated in the exercise plus ischemia-reperfusion group compared to the ischemia-reperfusion group. CONCLUSIONS: The results of the present study indicate that exercise training seems to have a protective role against intestinal ischemia-reperfusion injury (Tab. 3, Fig. 1, Ref. 35).


Assuntos
Intestinos/irrigação sanguínea , Intestinos/patologia , Precondicionamento Isquêmico , Condicionamento Físico Animal/fisiologia , Traumatismo por Reperfusão/prevenção & controle , Traumatismo por Reperfusão/fisiopatologia , Animais , Humanos , Interleucina-6/sangue , Intestinos/lesões , Masculino , Malondialdeído/sangue , Estresse Oxidativo/fisiologia , Peroxidase/sangue , Distribuição Aleatória , Ratos , Ratos Wistar , Traumatismo por Reperfusão/patologia , Superóxido Dismutase/sangue , Fator de Necrose Tumoral alfa/sangue
5.
Bratisl Lek Listy ; 114(6): 308-10, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23731040

RESUMO

OBJECTIVE: At present, very little is known about the effects of donepezil on vascular reactivity. The aim of the present study was to evaluate the responses of rat urinary bladder to donepezil (10-10-3x10-4 M) and the role of Spirulina supplementation in these effects. MATERIAL AND METHODS: Animals were divided into the two groups of six animals in each group. The first group received only distilled water daily as vehicle for six weeks and served as the control. The second group received Spirulina 750 mg kg -1 orally, daily for six weeks and served as the spirulina group. Preparations of rat urinary bladder were used from both groups. RESULTS: Donepezil produced concentration dependent relaxation of rat urinary bladder preparations pre-contracted with KCl.The pIC50 value, but not the maximal response of donepezil, was significantly lower (p<0.05) in the Spirulina supplemented group. CONCLUSIONS: These results demonstrated for the first time that spirulina treatment can affect urinary bladder activity (Fig. 1, Ref. 20).


Assuntos
Inibidores da Colinesterase/farmacologia , Suplementos Nutricionais , Indanos/farmacologia , Piperidinas/farmacologia , Spirulina , Bexiga Urinária/efeitos dos fármacos , Animais , Donepezila , Masculino , Ratos , Ratos Wistar
6.
Bratisl Lek Listy ; 114(1): 7-11, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23253020

RESUMO

OBJECTIVE: Acrylamide (ACR) is a chemical used in many industries around the world and more recently was found to be formed naturally in foods cooked at high temperatures. ACR was shown to be a neurotoxicant, reproductive toxicant, and carcinogen in animal species. The aim of the present study is to evaluate the influence of ACR treatment on urinary bladder responses to carbachol (10-9-3x10-4 M) and potassium chloride (KCl; 5-100 mM), each of them causes receptor-dependent and receptor-independent contractions, respectively. We also examined the role of gender in these responses. MATERIAL AND METHODS: Rats of both genders were divided into three groups as follows: (1) Control animals (2) ACR-I; ACR-treated (2 mg/kg-d for 90 days) (3) ACR-II; ACR-treated (5 mg/kg-d for 90 days). RESULTS: In rats treated with ACR, the EC50 values of carbachol and KCl, but not the maximal response, to both agents were significantly higher than in control group. Histopathological parameters such as edema, congestion, inflammatory cells, microvascular proliferation, fibrosis, eosinophils, mast cells and epithelial damage were all higher in the ACR-treated group than in the controls. CONCLUSIONS: These results demonstrate for the first time that ACR-treatment can induce urinary bladder injury (Tab. 4, Fig. 4, Ref. 30).


Assuntos
Acrilamida/farmacologia , Bexiga Urinária/efeitos dos fármacos , Animais , Carbacol/farmacologia , Feminino , Técnicas In Vitro , Masculino , Contração Muscular/efeitos dos fármacos , Cloreto de Potássio/farmacologia , Ratos , Ratos Wistar , Bexiga Urinária/patologia , Bexiga Urinária/fisiopatologia
7.
Indian J Exp Biol ; 50(2): 128-32, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22670475

RESUMO

Increased generation of oxidants and (or) reduced endogenous antioxidant defense mechanisms are associated with the etiology of diabetic vascular complications. The aim of the present study was to evaluate whether curcumin supplementation increases the vasodilatory effect of cilostazol in streptozotocin induced diabetic rat aorta. Cumulative addition of cilostazol caused concentration-dependent relaxations of thoracic aorta rings. The sensitivity and the maximal response to cilostazol were significantly higher in control than those in diabetic animals. Treatment with curcumin in control rats increased the sensitivity to cilostazol. Further, in aortic rings from diabetic rats treated with curcumin, the responses to cilostazol were significantly increased in comparison to the response in aorta from untreated diabetic rats. It can be conclude, that curcumin increases the cilostazol-induced vasodilation in diabetic rat aorta.


Assuntos
Aorta Torácica/efeitos dos fármacos , Aorta Torácica/fisiopatologia , Curcumina/farmacologia , Diabetes Mellitus Experimental/fisiopatologia , Tetrazóis/farmacologia , Vasodilatação/efeitos dos fármacos , Vasodilatadores/farmacologia , Animais , Glicemia/efeitos dos fármacos , Glicemia/metabolismo , Peso Corporal/efeitos dos fármacos , Cilostazol , Relação Dose-Resposta a Droga , Técnicas In Vitro , Concentração Inibidora 50 , Masculino , Ratos
8.
Bratisl Lek Listy ; 113(5): 270-3, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22616583

RESUMO

OBJECTIVES: The aim of the present study was to evaluate the influence of endothelial nitric oxide (NO) on the vascular responses of curcumin-treated rats. METHODS: The experimental groups included the control and curcumin-treated (200 mg/kg/day, p.o., for 4 weeks) group. The concentration response curves to receptor-dependent agent 5-hydroxytryptamine (5-HT; 10--3x10- M) and receptor-independent agent potassium chloride (KCl; 5-100 mM) were observed. RESULTS: The concentration response curves to 5-HT and KCl shifted to the right and the maximal response was significantly decreased in the curcumin-treated rat aortas. A pretreatment of rings with L-NAME (a NOS inhibitor, 10- M) increased both the sensitivity and maximal response to only 5-HT. No apparent histological changes were demonstrated in smooth muscle and connective tissue layers in the aortas of the control and curcumin-treated rat preparations. CONCLUSION: The results of the present study suggest that NO release from endothelial cells modulates curcumin-treated rat aorta responses to 5-HT, but not to KCl (Tab. 2, Fig. 4, Ref. 25).


Assuntos
Aorta Torácica/efeitos dos fármacos , Curcumina/farmacologia , Óxido Nítrico/metabolismo , Vasoconstrição/efeitos dos fármacos , Animais , Aorta Torácica/metabolismo , Aorta Torácica/fisiologia , Relação Dose-Resposta a Droga , Endotélio Vascular/metabolismo , Técnicas In Vitro , Masculino , NG-Nitroarginina Metil Éster/farmacologia , Óxido Nítrico/antagonistas & inibidores , Cloreto de Potássio/farmacologia , Ratos , Serotonina/farmacologia
9.
Bratisl Lek Listy ; 113(8): 465-70, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22897369

RESUMO

BACKGROUND: Curcumin is an antioxidant molecule that has been shown to attenuate ischemia/reperfusion (I/R) injury in several organ systems. In the present study, we aimed to evaluate the possible effects of curcumin on contractile response to agonists and histopathological alterations in rat esophagus subjected to mesenteric I/R. MATERIALS AND METHODS: Adult male Wistar albino rats were randomly allocated to 4 groups, namely group I: sham-operated animals (n=10); group II: animals subdued to I/R injury only (n=10) and laparotomy; 45 minutes of superior mesenteric artery ligation were followed by 2 hours of reperfusion, group III: curcumin/sham (n=10); 20 days before I/R, curcumin (200 mg/kg/) was administered by gastric gavage, and group IV: curcumin-I/R (n=10). Mesenteric ischemia/reperfusion model was generated by clamping the superior mesenteric artery for 45 min followed by reperfusion for 2 h. Oral administration of curcumin by gavage at a dose of 200 mg/kg/day lasted 20 days just before inducing the mesenteric ischemia. At the end of reperfusion period, all animals were sacrificed and esophagus samples were collected to assess the contractile response to agonists and histopathological alterations. RESULTS: Ischemia/reperfusion significantly decreased the contractile responses to carbachol and KCl and this decrease was attenuated by curcumin. Pretreatment with curcumin caused a remarkable decrease in histopathological parameters such as edema, congestion and inflammatory cells. CONCLUSIONS: The results of the present study demonstrate for the first time that curcumin can attenuate the esophageal injury associated with I/R (Tab. 4, Fig. 3, Ref. 32).


Assuntos
Curcumina/uso terapêutico , Mesentério/irrigação sanguínea , Traumatismo por Reperfusão/prevenção & controle , Animais , Carbacol/farmacologia , Relação Dose-Resposta a Droga , Esôfago/efeitos dos fármacos , Técnicas In Vitro , Masculino , Contração Muscular/efeitos dos fármacos , Músculo Liso/efeitos dos fármacos , Músculo Liso/fisiologia , Cloreto de Potássio/farmacologia , Ratos , Ratos Wistar
10.
Bratisl Lek Listy ; 113(7): 393-9, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22794511

RESUMO

This study examined the combined effects of swimming training and coenzyme Q10 (CoQ10) supplementation on exhaustive exercise-induced oxidative stress in rat heart. The study was carried out with 4-month-old young adult male Wistar rats. Sixty four rats were divided mainly into two groups: trained and control. Each group was further divided into four subgroups: rest, exhausted, rest with CoQ10, exhausted with CoQ10. The training program consisted of swimming one hour each day, five days a week, for six weeks. At the end of sixth week, rats in exhausted exercise group were forced to swim until exhaustion and then they were immediately sacrificed, while rats in rest group were sacrificed at rest. Training alone or in combination with CoQ10 supplementation reduced to increasing MDA levels due to exhaustive exercise in rat heart (p<0.05). The trained-rest with CoQ10 group showed lower 8-OHdG levels than the control-rest with CoQ10 group. Exhaustive exercise effect was significant on SOD activity. Exhaustive exercise increased GSH levels in control groups while decreased GSH levels in training groups (p<0.05). In conclusion, the results suggest that CoQ10 supplementation combined with training may inhibit lipid peroxidation and DNA damage in the heart tissue. Also, it can be said that SOD activity and GSH levels were not influenced by CoQ10 supplementation (Fig. 4, Tab. 1, Ref. 69).


Assuntos
Antioxidantes/farmacologia , Miocárdio/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Esforço Físico , Ubiquinona/análogos & derivados , 8-Hidroxi-2'-Desoxiguanosina , Animais , Desoxiguanosina/análogos & derivados , Desoxiguanosina/metabolismo , Masculino , Malondialdeído/metabolismo , Condicionamento Físico Animal , Ratos , Ratos Wistar , Natação , Ubiquinona/farmacologia
11.
J Sports Med Phys Fitness ; 51(2): 305-12, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21681167

RESUMO

AIM: The purpose was to determine the changes of oxidative stress and antioxidant markers in plasma after repeated bouts of supramaximal exercise and the effects of coenzyme Q10 supplementation on these changes. METHODS: This randomized, double blind, crossover study was composed of two 8-week periods of supplementation with either 100 mg.day(-1) CoQ10 or placebo. Fifteen healthy and sedentary men participated in the study. Five Wingate tests with 2 min rest between tests were performed. Blood samples were collected at rest, immediately after, 15 and 60 min after the fifth Wingate test for oxidative stress (malondialdehyde, nitric oxide, xanthine oxidase and adenosine deaminase) and antioxidant (superoxide dismutase, glutathione peroxidase and uric acid) markers. RESULTS: At baseline exercise session, malondialdehyde increased 15 and 60 min after the exercise compared to the rest and immediately after the exercise. Malondialdehyde at rest, immediately after and 60 min after the exercise decreased with coenzyme Q10 supplementation when compared to baseline. At baseline exercise session, uric acid increased 15 and 60 min after the exercise when compared to the rest. In conclusion, lipid peroxidation and antioxidant defense increase after repeated short-term supramaximal exercise. CONCLUSION: Coenzyme Q10 supplementation partially prevents the increase in lipid peroxidation after repeated short-term supramaximal exercise.


Assuntos
Antioxidantes/análise , Exercício Físico/fisiologia , Estresse Oxidativo/fisiologia , Ubiquinona/análogos & derivados , Vitaminas/uso terapêutico , Adulto , Estudos Cross-Over , Método Duplo-Cego , Humanos , Peroxidação de Lipídeos/efeitos dos fármacos , Masculino , Esforço Físico/fisiologia , Ubiquinona/uso terapêutico , Adulto Jovem
12.
Genet Couns ; 21(2): 243-51, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20681227

RESUMO

The use of mobile telephones has rapidly increased worldwide as well as the number of mobile phone base stations that lead to rise low level radiofrequency emissions which may in turn have possible harm for human health. The national radiation protection board has published the known effects of radio waves exposure on humans living close to mobile phone base stations. However, several studies have claimed that the base station has detrimental effects on different tissues. In this study, we aimed to evaluate the effects of mobile phone base stations on the micronucleus (MN) frequency and chromosomal aberrations on blood in people who were living around mobile phone base stations and healthy controls. Frequency of MN and chromosomal aberrations in study and control groups was 8.96 +/- 3.51 and 6.97 +/- 1.52 (p: 0.16); 0.36 +/- 0.31 and 0.75 +/- 0.61 (p: 0.07), respectively. Our results show that there was not a significant difference of MN frequency and chromosomal aberrations between the two study groups. The results claim that cellular phones and their base stations do not produce important carcinogenic changes.


Assuntos
Células Sanguíneas/efeitos da radiação , Telefone Celular , Aberrações Cromossômicas , Exposição Ambiental/efeitos adversos , Micronúcleos com Defeito Cromossômico , Micro-Ondas/efeitos adversos , Adulto , Biomarcadores , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Turquia
13.
Methods Find Exp Clin Pharmacol ; 31(3): 151-6, 2009 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19536357

RESUMO

The mammalian nervous system processes complex information to control complex behaviors. Since the speed of transport of information can be a life-saving phenomenon, it is extremely important to stabilize the rate of these processes. This study aims to investigate the protective effects of melatonin supplementation on acute heavy exercise-induced changes in the nerve conduction velocity distributions (CVD). Remodeling of the sciatic nerve due to heavy exercise demonstrates not only an increase in some parameters (rheobase and chronaxie), but also decreases in maximum depolarization, total area under the compound action potential (CAP), fall-down phase of CAP kinetics and speed of the intermediately conducting group. Acute heavy exercise-induced decreases in the contribution of nerve fibers were mainly found between 1.0 and 1.7 interstimulus interval (ISI) values (46-52 m/s). Presupplementation with melatonin, a powerful antioxidant for nervous tissues, protects the sciatic nerve against all of the aforementioned changes. Presupplementation not only protects the nerve cells from exercise-induced damage, but also increases the contribution of nerve fibers with conduction velocities of 46-52 m/s.


Assuntos
Antioxidantes/administração & dosagem , Melatonina/farmacologia , Condução Nervosa/efeitos dos fármacos , Condicionamento Físico Animal/efeitos adversos , Nervo Isquiático/efeitos dos fármacos , Neuropatia Ciática/prevenção & controle , Animais , Melatonina/administração & dosagem , Condução Nervosa/fisiologia , Ratos , Ratos Sprague-Dawley , Nervo Isquiático/fisiopatologia
14.
Methods Find Exp Clin Pharmacol ; 31(5): 325-9, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19649339

RESUMO

The aim of this study was to examine the effects of leptin on aortic rings with and without endothelium isolated from streptozotocin (STZ)-induced diabetic and control rats, and also in the presence of an inhibitor of nitric oxide synthase (NOS). Thoracic aortic rings from 5-week STZ-induced diabetic (50 mg/kg i.p.) and age-matched control Sprague-Dawley rats were mounted in isolated tissue baths. Concentration-response curves to leptin (0.1 pM-1 nM) were constructed under basal tone and after precontraction with 1 microM phenylephrine in the presence or absence of Nomega-nitro-L-arginine methyl ester (L-NAME, 10 microM). Leptin caused a concentration-dependent relaxation of precontracted endothelium-intact aortic rings from control and diabetic rats. Responses to leptin in diabetic aorta were significantly increased compared to those of controls (P < 0.05). EC(50) values for leptin were similar for aortic rings from diabetic and control rats (P > 0.05). L-NAME pretreatment caused complete inhibition of the relaxant responses to leptin in the control aortic rings, while it induced a reduction in these responses in the diabetic rings (P < 0.05). Leptin-induced relaxation was eliminated when the endothelium was denuded. Leptin had no effect on the basal tone of endothelium-intact or -denuded aortic rings from control rats. In diabetic rings, leptin elicited concentration-dependent contractions (P < 0.05). Removal of the endothelium significantly increased the contractile effect of leptin on basal tone in diabetic rings (P < 0.05). The results suggest that leptin may induce vasodilatation by endothelial mechanism(s) other than nitric oxide (NO) release from the endothelium in diabetic aortic rings. On the other hand, leptin causes contractile effects on the basal tone in aorta smooth muscle isolated from STZ-induced diabetic rats. The contractile effect of leptin on basal tone may contribute to the development of hypertension in diabetes.


Assuntos
Aorta/efeitos dos fármacos , Diabetes Mellitus Experimental/fisiopatologia , Endotélio Vascular/fisiologia , Leptina/farmacologia , Animais , Aorta/fisiologia , Relação Dose-Resposta a Droga , Hipertensão/etiologia , Técnicas In Vitro , Masculino , NG-Nitroarginina Metil Éster/farmacologia , Ratos , Ratos Sprague-Dawley , Estreptozocina , Vasoconstrição/efeitos dos fármacos
15.
Arch Dermatol Res ; 297(7): 289-93, 2006 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16283344

RESUMO

Glutathione S-transferases (GST) play an important role in oxidative stress related syndromes. An imbalance of the oxidant and antioxidant systems is important in the pathogenesis of Behcet's disease (BD). The objective of this study was to evaluate the association of null genotypes of GST-M1 and GST-T1 with BD since some preliminary molecular genetic data were recently published. Ninety-four Turkish BD patients (42 male, 52 female, 37.1+/-10.4 years) and 140 healthy volunteers (70 male, 70 female, 36.8+/-11.7 years) matched for age and gender with the patients as the control group were included in the study. Distributions of GST-M1 and GST-T1 genotypes were determined by multiplexed PCR using three sets of primers for GST-M1, GST-T1, and beta-globulin genes. There was no association between BD and the frequencies of GST-M1 and GST-T1 null genotypes when compared to controls by separate analysis. However, by cross and pooled combination analysis there was a significant association between the frequencies of pooled GSTs with one or both null genotypes in BD and controls. This is the first evidence that the association between the frequencies of GST-M1 and GST-T1 null genotypes and BD might be dependent on the interaction of multiple null allele polymorphisms rather than a single null allele of GST-M1 and GST-T1.


Assuntos
Síndrome de Behçet/etiologia , Síndrome de Behçet/genética , Glutationa Transferase/genética , Glutationa Transferase/fisiologia , Adulto , Alelos , Antioxidantes/metabolismo , Síndrome de Behçet/fisiopatologia , beta-Globulinas/genética , beta-Globulinas/fisiologia , DNA/análise , DNA/genética , Feminino , Frequência do Gene , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Estresse Oxidativo , Reação em Cadeia da Polimerase , Polimorfismo Genético
16.
Clin Nephrol ; 65(2): 113-8, 2006 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-16509460

RESUMO

BACKGROUND: Despite some improvements in dialysis therapies, depression still remains an important problem in chronic hemodialysis (HD) patients. In this study, we aimed to investigate the association of depression and its treatment with quality of life (QOL) in HD patients. PATIENTS AND METHODS: 97 HD patients (52 male, 45 female, mean age 55 +/- 16 years) were enrolled. All patients had been dialyzed for more than 6 months. In order to evaluate QOL of the patients, a short form of Medical Outcomes Study (SF-36) was used. Depression was assessed by using Beck Depression Inventory (BDI). Patients who had BDI score > or = 15 were diagnosed as to have depression. Patients with depression received antidepressive treatment (sertralin HCl, 50 mg/day) for an 8-week period. After 8-week antidepressive treatment, all biochemical analysis, SF-36 and BDI were performed again. RESULTS: 40 patients (20 male, 20 female, mean age 56 +/- 14 years) had depression. All parameters related to QOL were significantly decreased in patients with depression as compared to patients without depression. Severity of depression was correlated with QOL parameters. After 8 weeks of treatment, as parallel to changes in BDI, QOL parameters improved in patients with depression. CONCLUSION: Decrease in QOL, associated with depression and antidepressive treatment, improves QOL in HD patients. Hemodialysis patients should be followed-up closely for presence of depression. Treatment of depression with antidepressive drug regimen would lead to relieve the symptoms related to depression and improvement of QOL in these patients. Antidepressive treatment should be required more often than we prescribe in routine clinical practice now.


Assuntos
Antidepressivos/uso terapêutico , Depressão/tratamento farmacológico , Falência Renal Crônica/psicologia , Qualidade de Vida , Diálise Renal/psicologia , Análise de Variância , Depressão/etiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estatísticas não Paramétricas , Resultado do Tratamento
17.
J Sports Med Phys Fitness ; 46(1): 15-9, 2006 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-16596094

RESUMO

AIM: The aim of the present study was to investigate the relationships between critical power (CP), maximal aerobic power and the anaerobic threshold and whether exercise time to exhaustion and work at the CP can be used as an index in the determination of endurance. METHODS: An incremental maximal cycle exercise test was performed on 30 untrained males aged 18-22 years. Lactate analysis was carried out on capillary blood samples at every 2 minutes. From gas exchange parameters and heart rate and lactate values, ventilatory anaerobic thresholds, heart rate deflection point and the onset of blood lactate accumulation were calculated. CP was determined with linear work-time method using 3 loads. The subjects exercised until they could no longer maintain a cadence above 24 rpm at their CP and exercise time to exhaustion was determined. RESULTS: CP was lower than the power output corresponding to VO2max, higher than the power outputs corresponding to anaerobic threshold. CP was correlated with VO2max and anaerobic threshold. Exercise time to exhaustion and work at CP were not correlated with VO2max and anaerobic threshold. CONCLUSIONS: Because of the correlations of the CP with VO2max and anaerobic threshold and no correlation of exercise time to exhaustion and work at the CP with these parameters, we conclude that exercise time to exhaustion and work at the CP cannot be used as an index in the determination of endurance.


Assuntos
Limiar Anaeróbio/fisiologia , Exercício Físico/fisiologia , Fadiga/fisiopatologia , Consumo de Oxigênio/fisiologia , Resistência Física/fisiologia , Adolescente , Adulto , Teste de Esforço , Frequência Cardíaca/fisiologia , Humanos , Ácido Láctico/sangue , Masculino
18.
J Sports Med Phys Fitness ; 45(4): 507-11, 2005 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-16446682

RESUMO

AIM: The aim of this study was to investigate the effects of creatine supplementation on performance during the repeated bouts of supramaximal exercise. METHODS: Twenty-three untrained young males participated in the study. A double blind design was used to create the creatine and placebo groups. Wingate test was performed 5 times with 90 g x kg(-1) body weight load with 2-min intervals. Peak power, mean power (MP), fatigue index (FI) were calculated. Capillary blood samples for lactate analysis were taken during the initial rest period and soon after the fifth Wingate test. For 6 days the creatine group (n=12) ingested 5 g creatine monohydrate, the placebo group (n=11) a flavored drink without creatine monohydrate 4 times daily. On the 7th day, the Wingate tests were repeated, as was the 1st day. RESULTS: In the creatine group, MP in the 3rd and 4th Wingate test, in the placebo group FI in the 1st and 2nd Wingate test significantly increased. While the total power output obtained from the five Wingate tests increased 7.6% from 366.3+/-65 W to 394+/-67.1 W, there was no change in the placebo group. CONCLUSIONS: It is concluded that creatine supplementation enhances total power output during the repeated bouts of supramaximal exercise separated by short resting intervals.


Assuntos
Creatina/farmacologia , Suplementos Nutricionais , Exercício Físico/fisiologia , Fadiga Muscular/efeitos dos fármacos , Músculo Esquelético/efeitos dos fármacos , Consumo de Oxigênio/efeitos dos fármacos , Esforço Físico/efeitos dos fármacos , Adolescente , Adulto , Limiar Anaeróbio/efeitos dos fármacos , Ciclismo/fisiologia , Método Duplo-Cego , Teste de Esforço , Humanos , Masculino , Fosfocreatina/biossíntese
19.
J Sports Med Phys Fitness ; 55(11): 1322-8, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25289715

RESUMO

AIM: The aim of this study was to investigate the effects of beta alanine and/or creatine supplementation on performance during repeated bouts of supramaximal exercise in sedentary men. METHODS: Forty-four untrained healthy men (aged 20-22 years, weight: 68-72 kg, height: 174-178 cm) participated in the present study. After performing the Wingate Test (WAnT) for three times in the baseline exercise session, the subjects were assigned to one of four treatment groups randomly: 1) placebo (P; 10 g maltodextrose); 2) creatine (Cr; 5 g creatine plus 5 g maltodextrose); 3) beta-alanine (ß-ALA; 1,6 g beta alanine plus 8,4 g maltodextrose); and 4) beta-alanine plus creatine (ß-ALA+Cr; 1,6 g beta alanine plus 5 g creatine plus 3,4 g maltodextrose). Participants were given the supplements orally twice a day for 22 consecutive days, then four times a day for the following 6 days. After 28 days, the second exercise session was applied during which peak power (PP) and mean power (MP) were measured and fatigue index (FI) was calculated. RESULTS: PP and MP decreased and FI increased in all groups during exercise before and after the treatment. During the postsupplementation session PP2 and PP3 increased in creatine supplemented group (from 642.7±148.6 to 825.1±205.2 in PP2 and from 522.9±117.5 to 683.0±148.0 in PP3, respectively). However, MP increased in ß-ALA+Cr during the postsupplementation compared to presupplementation in all exercise sessions (from 586.2±55.4 to 620.6±49.6 in MP1, from 418.1±37.2 to 478.3±30.3 in MP2 and from 362.0±41.3 to 399.1±3 in MP3, respectively). FI did not change with beta alanine and beta alanine plus creatine supplementation during the postsupplementation exercise session. CONCLUSION: Beta-alanine and beta alanine plus creatine supplementations have strong performance enhancing effect by increasing mean power and delaying fatigue Index during the repeated WAnT.


Assuntos
Creatina/uso terapêutico , Exercício Físico/fisiologia , Desempenho Psicomotor/efeitos dos fármacos , Comportamento Sedentário , beta-Alanina/uso terapêutico , Limiar Anaeróbio/efeitos dos fármacos , Suplementos Nutricionais , Método Duplo-Cego , Teste de Esforço , Humanos , Ácido Láctico/sangue , Masculino , Fadiga Muscular/efeitos dos fármacos , Força Muscular/efeitos dos fármacos , Placebos , Adulto Jovem
20.
Phytomedicine ; 20(10): 844-8, 2013 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-23647746

RESUMO

The aim of this study was to investigate the effects curcumin on inflammation and oxidative stress markers in the intestinal ischemia reperfusion (IIR) injury induced rats. Rats were divided into four groups: sham (S), intestinal IR (IIR), curcumin plus sham (CS), and curcumin plus intestinal IR (CIIR). Curcumin was given 200 mg kg⁻¹ for 20 days. IIR was produced by 45 min of intestinal ischemia followed by a 120 min of reperfusion. Although interleukin-6 levels tended to increase in IIR group tumor necrosis factor-α levels were not different. Intestinal myeloperoxidase activity in CS group was lower than IIR group. In intestine and heart tissues, malondialdehyde levels in CS and CIIR groups were lower than S and IIR groups. Superoxide dismutase activity in CIIR group was higher than IIR group in intestine and lung tissues. Curcumin has a protective role against ischemia reperfusion injury.


Assuntos
Curcumina/uso terapêutico , Enteropatias/prevenção & controle , Estresse Oxidativo/efeitos dos fármacos , Traumatismo por Reperfusão/prevenção & controle , Animais , Curcumina/administração & dosagem , Modelos Animais de Doenças , Masculino , Fitoterapia , Preparações de Plantas/administração & dosagem , Preparações de Plantas/uso terapêutico , Distribuição Aleatória , Ratos , Ratos Wistar
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