Publications by authors named "Comelekoglu U"

Article Synopsis
  • The study examines how ATP-sensitive potassium (K) channels influence the cytotoxic effects of cypermethrin on rat aortic smooth muscle cells.
  • Cytotoxicity was analyzed at various cypermethrin concentrations, revealing no effects initially, but significant decreases in cell index (CI) were noted after 96 hours at high concentrations.
  • The results suggest that cypermethrin affects vascular smooth muscle cells by decreasing K currents and conductivities, indicating K channels might be involved in this cytotoxicity.
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In the present study, the possible protective effects of paricalcitol (P) were investigated in testicular damage because of 1800 MHz radiofrequency radiation (RFR) exposure. Male Sprague Dawley rats 8-10 weeks old (n = 28) were randomly divided into four groups as control (C) (n = 7), RFR (n = 7, 1800 MHz RFR 1 h/day for 30 days), P (n = 7, 0.2 μg/kg paricalcitol, 3 times a week for 30 days), and RFR + P (n = 7, 1800 MHz RFR 1 h/day for 30 days +0.

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In recent years, the use of nanotechnology-based methods has become widespread in the treatment of ocular diseases. Silica nanoparticles (SiO NPs) are most common used NPs in medical field due to their physicochemical properties. SiO NPs can easily cross biological membranes and interact with basic biological structures, causing structural and functional changes in cells.

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Background: Pomegranate is a rich source of many polyphenolic compounds including ellagitannins (punicalagin, punicalin and others).

Aim: The effects of punicalagin and punicalin on adipogenesis were investigated in this study.

Materials And Methods: To examine the effect of punicalagin and punicalin on adipocyte differentiation, various concentrations of punicalagin and punicalin (2-10 µM) were applied to differentiated 3T3-L1 cells.

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In recent studies, it has been reported that ion channels play an important role in cancer formation. Therefore, it is possible that the use of pharmacological agents targeting ion channels will allow the development of new strategies for cancer treatment. In this study, we investigate the effect of imipramine on Eag1 channel expression in DU145 prostate cancer cells.

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Introduction: A cadaveric experimental investigation aimed to show the rupture pressure of the tympanic membrane (TM) for otologists to evaluate its tensile strength.

Methods: Twenty adult ears in 10 fresh frozen whole cadaveric heads (four males, six females) mean age 72.8 (SD 13.

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  • This study investigates the impact of LTE-Advanced Pro mobile network radiation on the optic nerve of rats, focusing on potential health risks associated with increased mobile phone usage.
  • Thirty-two rats were divided into control (no radiation) and experimental groups (exposed to RF radiation), where the effects on visual evoked potentials, oxidative stress markers, and nerve structure were analyzed over a six-week period.
  • Results showed significant reductions in visual signal strength and structural changes in the optic nerve for the experimental group, indicating potential damage linked to the radiation exposure, which could negatively affect quality of life.
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Background: Diabetes mellitus (DM) has become more and more common and has a high morbidity and mortality rate worldwide. It is a multifactorial chronic disease affected by both genetic and environmental factors.

Objectives: To evaluate the association between antioxidant enzyme activities and their genetic variations and the level of malondialdehyde (MDA) in type II diabetes patients living in the Adıyaman province in the southeast part of Turkey.

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Objectives Rheum ribes L. is a perennial plant that belongs to the family of Polygonaceae, which is often used in traditional therapy because it possesses many bioactivities, such as antioxidant and antibacterial ones. Here we examined the effect of different R.

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Although radiotherapy (RT) is an important component of cancer treatment, it induces adverse tissue reactions in the around of cancer tissue. Therefore, radioprotectives are needed to protect normal tissues. The aim of this study was to investigate the radioprotective effect of N-acetylcysteine (NAC) on RT-induced cardiac damage in rats for the acute term.

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Prostate cancer is the most common cancer and leading cause of cancer death for males. Imipramine (IMI), which is a tricyclic antidepressant, has also been shown to has antineoplastic effect. This study was performed to investigate the radiosensitizing effect of IMI on DU145 prostate cancer cell.

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Background/aim: Intraabdominal pressure (IAP) is one of the main reasons for gastroesophageal reflux (GER). This study investigates whether IAP during laparoscopic surgery leads to GER in a time-dependent manner.

Materials And Methods: In a laparoscopy model, 15 mmHg IAP was created in 8 Wistar albino rats in the Trendelenburg position (TP).

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The nervous system is an important target of radiofrequency (RF) radiation exposure since it is the excitable component that is potentially able to interact with electromagnetic fields. The present study was designed to investigate the effects of 1,800 MHz RF radiation and the protective role of paricalcitol on the rat sciatic nerve. Rats were divided into four groups as control, paricalcitol, RF, and RF + paricalcitol.

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In this study, the effects of a neonicotinoid insecticide acetamiprid on the sciatic nerve of Rana ridibunda were investigated by using electrophysiological and histological methods. A total of 35 preparations of sciatic nerve isolated from 35 frogs (Nervus ischiadicus) were used in the experiments. Experiments were designed as four different dose groups (n = 8 per group).

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Article Synopsis
  • The study investigates the toxicity of 20 nm silica nanoparticles (SiO NPs) on isolated uterine smooth muscle by using different dosages in four experimental groups.
  • Results showed that higher concentrations of SiO NPs significantly reduced the frequency and energy of uterine contractions compared to the control group.
  • The presence of SiO NPs led to increased oxidative stress, indicated by lower antioxidant enzyme activities and higher levels of cell apoptosis in the experimental groups.
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Background: In this study, we aimed to investigate the role of ATP-sensitive potassium (K) channel, Na/K-ATPase activity, and intracellular calcium levels on the vasodilatory effect of N-acetylcysteine (NAC) in thoracic aorta by using electrophysiological and molecular techniques.

Methods: Rat thoracic aorta ring preparations and cultured thoracic aorta cells were divided into four groups as control, 2mM NAC, 5mM NAC, and 10mM NAC. Thoracic aorta rings were isolated from rats for measurements of relaxation responses and Na/K-ATPase activity.

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Objective: The aim of this study was to investigate the probable effects of Hypericum perforatum (HP) on wound healing in diabetic rats.

Materials And Methods: Thirty-five male Wistar rats were divided evenly into 5 groups. Diabetes formation was induced by intraperitoneal streptozotocin (60 mg/kg) administration for groups 1 (HP extract in olive oil), 2 (HP extract in ethanol), 3 (povidone-iodine application), and 4 (diabetic rats without any applied medication); group 5 was the control.

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Aim: To evaluate the remote effect of intestinal ischemia reperfusion (IR) injury mediated by tumor necrosis factor alpha (TNF-α) on diaphragm contractility functions and whether administration of NAC may counteract the possible detrimental effects in an experimental neonatal rat model.

Methods: 40 Wistar rat pups were randomized into four groups; ten animals in each. Intestinal ischemia was conducted by obstructing mesentery of intestines by a silk loop.

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  • The study examined the effects of the immunosuppressive drug mycophenolate mofetil (MM) in comparison to steroids like methylprednisolone (MP) and dexamethasone (DXM) on traumatic nerve function in rats.
  • Conducted on 84 male Wistar albino rats, the research involved various treatment groups, nerve trauma induction, and analysis of compound muscle action potential thresholds, alongside electron microscopic and histopathologic evaluations.
  • Results indicated that MM and its combination with MP led to better recovery in nerve function compared to DXM, suggesting MM as a promising alternative for traumatic nerve injuries when steroid use is not advisable.
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Healing of a transected nerve is not always optimal even if it is repaired with an ideal microsurgical technique. We studied the effects of solitary and combined usage of amniotic membrane (AM) wrapping and granulocyte-colony-stimulating factor (GCSF) injections after primary repairs of transected sciatic nerves of Wistar rats. No repair was performed in group 1, primary nerve repairs were performed in group 2, AMs were wrapped around repair sites in group 3, in addition to AM wrapping G-CSF injections were performed in group 4, and only G-CSF injections were performed in group 5.

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Background: Although bevacizumab has deleterious effects on the healing of colonic anastomoses, trapidil improves wound healing of colonic and tracheal anastomoses.

Objective: We aimed to assess the effects of bevacizumab and trapidil on wound healing after tracheal transection.

Materials And Methods: We evaluated 35 rats divided in 5 groups: bevacizumab (Group I, n = 7), trapidil (Group II, n = 7), trapidil + bevacizumab (Group III, n = 7), controls (Group IV, n = 7), and sham (Group V, n = 7).

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  • The study investigated the effects of a 4% icodextrin solution on preventing adhesions and its impact on anastomotic healing in rats, comparing various groups manipulated with icodextrin and surgical procedures.
  • Results showed that icodextrin significantly reduced adhesion scores compared to control groups, although it did not affect the healing of anastomoses between groups.
  • Biochemical analyses indicated that icodextrin treatment led to higher hydroxyproline levels and lower myeloperoxidase (MPO) levels, demonstrating its efficacy in minimizing adhesions without compromising healing.
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Unlabelled: Abstract Purpose: The aim of the present study was to evaluate the electrophysiological, biochemical and ultrastructural changes on the rat sciatic nerve after radiotherapy.

Material And Methods: Thirty male Wistar albino rats were divided into three groups as: Control group (n = 10), Group I: 3 months after radiotherapy (n = 10), and Group II: 6 months after radiotherapy (n = 10). Groups I and II were irradiated with a (60)Co gamma source.

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Background: Osteoporosis is the most common skeletal disorder and is considered a risk of fracture. Most medication used for the treatment of osteoporosis is antiresorptive; however, strontium ranelate (Sr) therapy in postmenopausal women has shown a double effect on resorption and bone formation. In this study, the effect of Sr on status of the oxidative stress and antioxidant defence system was investigated.

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