Browsing by Author "Aytan, Nurgul"

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Biphasic ROS production, p53 and BIK dictate the mode of cell death in response to DNA damage in colon cancer cells
(2017) Kutuk, Ozgur; Aytan, Nurgul; Karakas, Bahriye; Kurt, Asli Giray; Acikbas, Ufuk; Temel, Sehime Gulsun; Basaga, Huveyda; 0000-0001-9854-7220; 28796811; AAH-1671-2019
Necrosis, apoptosis and autophagic cell death are the main cell death pathways in multicellular organisms, all with distinct and overlapping cellular and biochemical features. DNA damage may trigger different types of cell death in cancer cells but the molecular events governing the mode of cell death remain elusive. Here we showed that increased BH3-only protein BIK levels promoted cisplatin-and UV-induced mitochondrial apoptosis and biphasic ROS production in HCT-116 wild-type cells. Nonetheless, early single peak of ROS formation along with lysosomal membrane permeabilization and cathepsin activation regulated cisplatin-and UV-induced necrosis in p53-null HCT-116 cells. Of note, necrotic cell death in p53-null HCT-116 cells did not depend on BIK, mitochondrial outer membrane permeabilization or caspase activation. These data demonstrate how cancer cells with different p53 background respond to DNA-damaging agents by integrating distinct cell signaling pathways dictating the mode of cell death.
Developmental delays and psychiatric diagnoses are elevated in offspring staying in prisons with their mothers
(2018) Kutuk, Meryem Ozlem; Altintas, Ebru; Tufan, Ali Evren; Guler, Gulen; Aslan, Betul; Aytan, Nurgul; Kutuk, Ozgur; 0000-0001-5207-6240; 0000-0001-9854-7220; 0000-0002-2918-7871; 0000-0003-2735-4805; 29382903; AAH-1846-2019; C-5074-2015; AAH-1671-2019; AAI-9626-2021; G-8832-2015
The aim of the study was to describe the sociodemographic and clinical features of the mothers and their offspring staying with them in prison. The study was planned as a cross-sectional, single-center study of mothers residing in Tarsus Closed Women's Prison of Turkish Ministry of Justice along with their 0 to 6 years old offspring. Mothers were evaluated via Structured Clinical Interview for DSM-IV Axis I Disorders. A psychologist blind to maternal evaluations applied the Denver Developmental Screening Test II (DII-DST). Children/mothers were also evaluated by a child and adolescent psychiatrist via K-SADS-PL. Twenty-four mothers with a mean age of 29.3 years were included. Most common diagnoses in mothers were nicotine abuse (n = 17, 70.8%), specific phobia (n = 8, 33.3%), alcohol abuse (n = 7, 29.2%) and substance abuse (n = 5, 20.8%). Twenty-six children (53.9% female) were living with their mothers in prison, and the mean age of those was 26.3 months. Results of the D-II-DST were abnormal in 33.3% of the children. Most common diagnoses in children were adjustment disorder (n = 7, 26.9%) separation anxiety disorder (n = 3, 11.5%) and conduct disorder (n = 2, 7.7%). A multi-center study is necessary to reach that neglected/under-served population and address the inter-generational transmission of abuse, neglect, and psychopathology.
Migraine and Associated Comorbidities are Three Times More Frequent in Children With ADHD and Their Mothers
(2018) Kutuk, Meryem Ozlem; Tufan, Ali Evren; Guler, Gulen; Yalin, Osman Ozgur; Altintas, Ebru; Bag, Harika Gozukara; Uluduz, Derya; Toros, Fevziye; Aytan, Nurgul; Kutuk, Ozgur; Ozge, Aynur; https://orcid.org/0000-0002-2918-7871; https://orcid.org/0000-0001-5207-6240; https://orcid.org/0000-0003-2735-4805; https://orcid.org/0000-0001-9854-7220; 29921473; AAI-9626-2021; C-5074-2015; G-8832-2015; AAH-1671-2019
Objective: Attention deficit and hyperactivity disorder (ADHD) is a neuro-developmental disorder related to internalizing and externalizing disorders as well as somatic complaints and disorders. This study was conducted to evaluate the prevalence of headache subtypes, epilepsy, atopic disorders, motion sickness and recurrent abdominal pain among children and adolescents with ADHD and their parents. Methods: In a multi-center, cross-sectional, familial association study using case-control design, treatment na ve children and adolescents between 6 and 18 years of age diagnosed with ADHD according to the DSM-5 criteria as well as age- and gender matched healthy controls and their parents were evaluated by a neurologist and analyzed accordingly. Results: 117 children and adolescents with ADHD and 111 controls were included. Headache disorder diagnosis was common for both patients and healthy controls (59.0% vs. 37.8%), with a significantly elevated rate in the ADHD group (p = 0.002). Migraine was found in 26.0% of ADHD patients and 9.9% of healthy controls. Tension headache was found in 32.4% of ADHD patients and 27.9% of healthy controls. Headache diagnosis was also found to be significantly more common in mothers of children with ADHD than control group mothers (90.5% vs. 36.6%, p < 0.001). Conclusion: Headache diagnoses and specifically migraines were significantly more common among children with ADHD and their mothers, while recurrent abdominal pain was elevated in both parents and ADHD patients. Migraine is an important part of ADHD comorbidity, not only for children but also for mothers. Motion sickness may be reduced among families of ADHD probands. (C) 2018 The Japanese Society of Child Neurology. Published by Elsevier B.V. All rights reserved.