11 results on '"Gokce Kaya"'
Search Results
2. Abelmoschus esculentus (L.) Moench seed extract alleviates acute acetaminophen induced liver damage in rats.
- Author
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Kocabey, Huseyin, Bekdas, Mervan, Cetinkaya, Ayhan, Duzcu, Selma Erdogan, Alisik, Murat, Dincel, Gokce Kaya, and Turel, Idris
- Subjects
ABELMOSCHUS ,ACETAMINOPHEN ,PLANT extracts ,ANTI-inflammatory agents ,OXIDATIVE stress - Abstract
Acetaminophen (N-acetyl-p-aminophenol, APAP), commonly called the 'paracetamol', is one of the most regularly utilized medicines, particularly in children. When administered at the recommended doses, it is a safe medication. However, oxidative stress and inflammation caused by exposure to toxic doses lead to centrilobular hepatic necrosis. N-acetylcysteine (NAC) is utilized in the therapy, however it has potential adverse effects. On the other hand, it is known that the seeds of the common vegetable Okra, Abelmoschus esculentus (AE), a herbal product, possess antioxidant and anti-inflammatory qualities. In the present study, we explored whether AE can be used as an alternative to standard NAC therapy without any adverse effect in the treatment of acute APAP induced liver injury. Forty male Wistar rats were placed into five groups: Control, AE, APAP, APAP+AE and APAP+AE+NAC groups. Antioxidants such as native thiol and total thiol were found rised in the APAP group by adding AE (p =0.043 and p =0.028, respectively). Anti-inflammatory indicator IL-10 was also found increased, while marker ALT, which is a sign of hepatotoxicity, got decreased (P=0.005 and P <0.001, respectively). Histologically, AE has been shown to improve worsened congestion (P =0.003), cytoplasmic vacuolization (P =0.01), sinusoidal dilatation (P =0.001), Kupffer cell proliferation (P <0.001) and inflammation (P <0.001). These results suggest that the okra seeds may be a potential therapeutic agent for paracetamol induced hepatotoxicity and it can be attributed to the antioxidant and anti-inflammatory properties. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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3. Antioxidant effect of Abelmoschus Esculentus against acetaminophen-induced nephrotoxicity: an experimental study
- Author
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Bekdas, Mervan, primary, Yoldas, Arzu Meyri, additional, Danıs, Aysegul, additional, Duzcu, Selma Erdogan, additional, Alisik, Murat, additional, Cetinkaya, Ayhan, additional, Kocabey, Huseyin, additional, Turel, Idris, additional, Dilek, Mustafa, additional, and Dincel, Gokce Kaya, additional
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- 2022
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4. Antioxidant effect of Abelmoschus Esculentus against acetaminophen-induced nephrotoxicity: an experimental study
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Mervan Bekdas, Arzu Meyri Yoldas, Aysegul Danıs, Selma Erdogan Duzcu, Murat Alisik, Ayhan Cetinkaya, Huseyin Kocabey, Idris Turel, Mustafa Dilek, and Gokce Kaya Dincel
- Abstract
Acetaminophen(APAP) intoxication is an important cause of nephrotoxicity and hepatotoxicity. N-acetylcysteine(NAC) is used in the treatment, but it has some serious side effects. Abelmoschus esculentus(AE) has various benefits as well as antioxidant effects. This study aims to investigate the effect of AE in APAP-induced acute nephrotoxicity. Forty male Wistar rats were divided into five equal groups: Control, AE, APAP, APAP+AE, and APAP+AE+NAC. Significant changes were observed in serum levels of malondialdehyde (MDA), superoxide dismutase (SOD), Neutrophil Gelatinase-Associated Lipocalin(NGAL) and Kidney Injury Molecule-1(KIM-1) after induction with APAP. NGAL and KIM-1 in the AE group remained low compared to those receiving APAP (p=0.022 and p0.001, respectively). When the APAP group was compared with the AE and AE+NAC groups, it was found that even the administration of AE alone significantly decreased NGAL and KIM-1(p=0.036 vs.p=0.029 and p0.001 vs. p0.001, respectively), these results were attributed to the effects of AE on reducing MDA and increasing SOD. Histopathological studies also confirmed these results. These results demonstrated that AE had protective and therapeutic effects on APAP-induced nephrotoxicity. This benefit of AE is due to its antioxidant effect. In addition, AE may also increase the regenerative capacity of the kidney, which APAP reduces.
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- 2022
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5. The predictive role of neutrophil-to-lymphocyte ratio and platelet-to-lymphocyte ratio in children with simple febrile seizures
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Mervan Bekdas, Meyri Arzu Yoldas, Fatma Hanci, and Gokce Kaya Dincel
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medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,Complete blood count ,Red blood cell distribution width ,Hematocrit ,medicine.disease ,Gastroenterology ,medicine.anatomical_structure ,Febrile seizure ,Internal medicine ,White blood cell ,medicine ,Neutrophil to lymphocyte ratio ,Mean platelet volume ,business ,Mean corpuscular volume - Abstract
Aim: To evaluate the predictive roles of biochemical and complete blood count parameters in the diagnosis of febrile seizures by comparing these between patients with simple febrile seizures and febrile patients without seizures. Methods: One hundred fifty-two children (66 girls and 86 boys), aged 6-60 months presenting with fever symptoms presenting to our hospital’s pediatric emergency department between January 2015 and January 2020 were included in the study. Demographic data, complete blood count parameters and biochemical parameter levels were compared between the two groups. These were divided into a patient group with simple febrile seizures (n = 74) and a febrile control group without seizures (n = 78). Results: Comparison of biochemical parameters revealed significantly higher glucose, CRP, and ALT levels in the febrile seizure group, while Ca and Na were significantly lower. Comparison of complete blood count parameters revealed significantly higher white blood cell (WBC), neutrophil, red cell distribution width, neutrophil-to-lymphocyte ratio (NLR), and platelet-to-lymphocyte ratio (PLR) values in the febrile seizure group, while hemoglobin, hematocrit, mean corpuscular volume, lymphocytes, and mean platelet volume were significantly lower. Conclusions: We think that in addition to markers such as WBC, leukocytes, and CRP for evaluating inflammation in patients with febrile seizures, simple, easily available, and inexpensive tests such as NLR and PLR can also be useful for assessing inflammation.
- Published
- 2021
6. As a Useful Biomonitor of Toxic Trace Element Contamination in the Highly Urbanised Istanbul, Turkey; Mytilus Galloprovincialis
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Gokce Kaya, Mehmet Yaman, and Semra Türkoğlu
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biology ,Environmental chemistry ,Istanbul turkey ,Trace element ,Environmental science ,Contamination ,biology.organism_classification ,Mytilus - Abstract
In this study, concentrations of toxic trace elements were determined by an ICP-MS device in the edible tissues of Mytilus galloprovincialis from the Marmara Sea, İstanbul-Turkey. Concentrations of As, Pb, Cd, Hg, Ni, and Zn were investigated in digestive gland, gills, and muscles tissues of the mussel.According to the results obtained in the study, As, Pb, Cd, Ni, and Zn in the digestive gland of M. galloprovincialis were above the permissible concentrations (mgkg-1), which were 0.672 for Cd, 6.870 for As, 0.788 for Pb, 1.990 for Ni and 42.6 for Zn. The results show that Cd and As mean concentrations in muscle of M. galloprovincialis were above the permissible legal limits. Furthermore, Cd and Ni mean concentrations in gills of M. galloprovincialis were above the permissible levels. Furthermore, it was observed that the highest value belonged to As in the digestive gland of mussels with 65.42% of Provisional Tolerable Weekly Intake. At the same time, the lowest percentage belonged to Zn with 0.22% of PTWI in muscles and 0.313% of PTWI in gills of the mussels. Thus, it is recommended that As, Pb, Cd, Hg, Ni, and Zn concentrations in seafood samples, particularly in mussels, should be monitored periodically.
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- 2021
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7. Effects of gestational exercise on hyperoxia-induced brain damage in the newborn
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Nimet Kabakuş, Gamze Dilek, Mervan Bekdas, Mustafa Dilek, Erol Ayaz, Gokce Kaya Dincel, and Ayhan Cetinkaya
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Hyperoxia ,Pregnancy ,Microcephaly ,Brain development ,business.industry ,Offspring ,Brain Mass ,Physiology ,Brain damage ,medicine.disease ,medicine ,Gestation ,medicine.symptom ,business - Abstract
Aim: Preterm infants encounter hyperoxia relatively early on as they leave the intrauterine environment earlier than expected, while also being exposed to a higher level of hyperoxic stress due to insufficiencies in their antioxidant defense mechanisms. With that in mind, we investigate whether running exercises performed during pregnancy can contribute to the development of tolerance to neonatal hyperoxic brain damage. Method: While two female rats maintained a sedentary pregnancy, one female rat performed the mandatory running exercise for 30 minutes for five days a week throughout the pregnancy. Following delivery, the sedentary rats and the exercised rat were kept together with their offspring for five days at oxygen concentrations above 80 percent in order to induce brain damage. The offspring were sacrificed on postnatal Day 7 and brain/body ratio measurements were obtained. Results: The brain/body ratios in the control, hyperoxia and exercise-hyperoxia groups were found to be median (IQR) 0.074(0.68-0.77), 0.065(0.06-0.067) and 0.064(0.060-0.068), respectively. The brain/body ratios of the offspring of the mothers in the hyperoxia group were found to be significantly lower than the control group (p=0.002), irrespective of exercise (p=0.007). No statistically significant difference was noted between the offspring of the sedentary and the exercised mothers in the hyperoxia group (p=0.94). Conclusion: Hyperoxia was found to result in lower brain mass relative to total body mass. This finding, which indicates the presence of microcephaly, reflects the negative effects of hyperoxia on brain development. Contrary to expectations, exercises performed during pregnancy had no significant effect on the brain/body weight ratio of the offspring.
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- 2018
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8. Use of salidroside in a lipopolysaccharide-induced periventricular leukomalacia model
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Mervan Bekdas, Gokce Kaya Dincel, Mustafa Dilek, Ayhan Cetinkaya, and Nimet Kabakuş
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Periventricular leukomalacia ,Lipopolysaccharide ,biology ,Offspring ,business.industry ,Salidroside ,Pharmacology ,biology.organism_classification ,medicine.disease ,chemistry.chemical_compound ,Rhodiola rosea ,chemistry ,Apoptosis ,Rhodiola ,medicine ,Gestation ,business - Abstract
Aim: Research into the different treatment methods based on the intrauterine lipopolysaccharide (LPS)-induced Periventricular leukomalacia (PVL) model, as one of the main causes of morbidity in preterm infants still continues to be relevant. The present study investigates the effect on PVL of salidroside obtained from Rhodiola Rosea (golden root, orpin rose), which is a plant with known for its medicinal qualities. Method: To develop an induced PVL model, a 500 microgram/kg dose of LPS (Escherichia coli, serotype 055:B5, Sigma) was applied to two pregnant rats intraperitoneally on day 18, day 19 and day 20 of gestation. One of the LP applied rats was given 25 mg/kg Salidroside (250 mg Rhodiola root extract capsules, which include 3 mg Salidroside) by oral gavage (LPS+Salidroside), and a physiological saline solution was given to the control group. After delivery, 10 offspring of the LPS-applied mother, nine offspring of the LPS+Salidrosideapplied mother and seven offspring of the control mother were sacrificed on postnatal Day 7 with ether anesthesia. The caspase enzyme located in apoptosis pathways of 10 percent neutral-buffered formalin fixed brain tissue was stained immunohistochemically, and apoptotic cells were counted. Results: No statistically significant difference was noted between the LPS+Salidroside group and the control group, while a statistically significant difference was noted between the LPS and LPS+Salidroside groups. It was observed that Salidroside reduced LPS induced apoptosis. Conclusion: The intended experimental neuroprotective effect of Salidroside usage was provided through the inhibition of apoptosis in a PVL-damaged brain.
- Published
- 2018
9. Determination of Elements in Thermal Springs for Monitoring Pre-Earthquake Activites by ICP-MS
- Author
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Sukran Akkus, Muharrem Ince, Ahmet Sasmaz, Gokce Kaya, Mehmet Yaman, Nagihan M. Karaaslan, and Cemile Ozcan
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Chemistry ,Speciation ,Analytical chemistry ,Precursors ,Mineralogy ,Anomalies ,Hydrogeochemical Changes ,Enrichment ,Radon ,Region ,Groundwater ,Inductively coupled plasma mass spectrometry ,Spectroscopy ,Waters ,Cadmium - Abstract
This study presents the results of hydrogeochemical studies carried out at the Kos thermal springs in Bingol, located in East Anatolia, Turkey. More than 250 thermal water samples were collected on a regular basis from November 2006 to January 2009 to measure element concentrations as a monitor of earthquake precursors. Water samples were analyzed using inductively coupled plasma mass spectrometry (ICP-MS). The B, Ba, Br, and Ge concentrations were monitored for three years and ranged from 6822-7666, 64-101, 271-406, and 4.1-6.0 mu g L-1, respectively. The chloride concentrations for this period were in the 89-127 mg L-1 range. The data identify some element anomalies at least two hours prior to a major earthquake and for some time afterwards. These anomalies are characterized by decreases up to 20% in B, Ba, Cl, and Ge concentrations and can be attributed to stress-/strain-induced pressure changes in the subsurface water systems. From this study, it can be suggested that thermal springs in a fault line area are ideal sites for monitoring precursors to earthquakes. Scientific and Technical Research Council of TurkeyTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [TUBITAK-106Y051] This work was financially supported by The Scientific and Technical Research Council of Turkey (Project number: TUBITAK-106Y051).
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- 2011
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10. Sequential and Selective Extraction of Copper in Different Soil Phases and Plant Parts from Former Industrialized Area
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Mehmet Yaman, Gokce Kaya, Olcay Kaplan, and Güzel Sanatlar Fakültesi
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biology ,Chemistry ,media_common.quotation_subject ,Extraction (chemistry) ,Trace element ,Soil Science ,chemistry.chemical_element ,biology.organism_classification ,Copper, extraction, plant, soil, speciation ,Copper ,Human health ,Speciation ,Environmental chemistry ,Soil water ,Copper levels ,Rumex ,Agronomy and Crop Science ,media_common - Abstract
Copper (Cu) is an essential trace element for all living organisms; however, excess amounts in soil, plants, and food have negative impacts on the environment and human health. The aim of this study was to determine Cu levels in different chemical phases of soils and the relationship between Cu levels in soil phases and concentrations in plants. Soils and plants grown in these soils from an industrialized area in Turkey were analyzed using a selective and four-stage sequential extraction procedure. Copper levels in exchangeable fractions were found up to 658 mg kg−1 while total levels were in the range of 133–5609 mg kg−1. Copper concentrations in plant parts (roots and stem) were in the range of 2.6–240 mg kg−1. The exchangeable forms of Cu were in the range of 3–22% of total Cu concentrations. The relationships were observed between soil Cu and Rumex plant Cu, and soil Cu and root of Brassicasea plant Cu.
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- 2011
11. Distribution of trace metal concentrations in paired cancerous and non-cancerous human stomach tissues
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Hayrettin Yekeler, Mehmet Yaman, and Gokce Kaya
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Adult ,Pathology ,medicine.medical_specialty ,Iron ,Human stomach ,Nickel ,Stomach Neoplasms ,medicine ,Distribution (pharmacology) ,Humans ,Trace metal ,Magnesium ,Aged ,Chemistry ,Stomach ,digestive, oral, and skin physiology ,Gastroenterology ,General Medicine ,Middle Aged ,Trace Elements ,Zinc ,medicine.anatomical_structure ,Calcium ,Copper ,Rapid Communication - Abstract
To assess whether trace metal concentrations (which influence metabolism as both essential and non-essential elements) are increased or decreased in cancerous tissues and to understand the precise role of these metals in carcinogenesis.Concentrations of trace metals including Cd, Ni, Cu, Zn, Fe, Mg and Ca in both cancerous and non-cancerous stomach tissue samples were determined by atomic absorption spectrometry (AAS). Tissue samples were digested using microwave energy. Slotted tube atom trap was used to improve the sensitivity of copper and cadmium in flame AAS determinations.From the obtained data in this study, the concentrations of nickel, copper and iron in the cancerous human stomach were found to be significantly higher than those in the non-cancerous tissues, by using t-test for the paired samples. Furthermore, the average calcium concentrations in the cancerous stomach tissue samples were found to be significantly lower than those in the non-cancerous stomach tissue samples by using t-test. Exceedingly high Zn concentrations (207-826 mg/kg) were found in two paired stomach tissue samples from both cancerous and non-cancerous parts.In contrast to the literature data for Cu and Fe, the concentrations of copper, iron and nickel in cancerous tissue samples are higher than those in the non-cancerous samples. Furthermore, the Ca levels are lower in cancerous tissue samples than in non-cancerous tissue samples.
- Published
- 2007
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