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Rosain J, Kiykim A, Michev A, Kendir-Demirkol Y, Rinchai D, Peel JN, Li H, Ocak S, Ozdemir PG, Le Voyer T, Philippot Q, Khan T, Neehus AL, Migaud M, Soudée C, Boisson-Dupuis S, Marr N, Borghesi A, Casanova JL, Bustamante J. Recombinant IFN-γ1b Treatment in a Patient with Inherited IFN-γ Deficiency. J Clin Immunol 2024; 44:62. [PMID: 38363432 PMCID: PMC10873451 DOI: 10.1007/s10875-024-01661-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 01/21/2024] [Indexed: 02/17/2024]
Abstract
PURPOSE Inborn errors of IFN-γ immunity underlie Mendelian susceptibility to mycobacterial disease (MSMD). Twenty-two genes with products involved in the production of, or response to, IFN-γ and variants of which underlie MSMD have been identified. However, pathogenic variants of IFNG encoding a defective IFN-γ have been described in only two siblings, who both underwent hematopoietic stem cell transplantation (HCST). METHODS We characterized a new patient with MSMD by genetic, immunological, and clinical means. Therapeutic decisions were taken on the basis of these findings. RESULTS The patient was born to consanguineous Turkish parents and developed bacillus Calmette-Guérin (BCG) disease following vaccination at birth. Whole-exome sequencing revealed a homozygous private IFNG variant (c.224 T > C, p.F75S). Upon overexpression in recipient cells or constitutive expression in the patient's cells, the mutant IFN-γ was produced within the cells but was not correctly folded or secreted. The patient was treated for 6 months with two or three antimycobacterial drugs only and then for 30 months with subcutaneous recombinant IFN-γ1b plus two antimycobacterial drugs. Treatment with IFN-γ1b finally normalized all biological parameters. The patient presented no recurrence of mycobacterial disease or other related infectious diseases. The treatment was well tolerated, without the production of detectable autoantibodies against IFN-γ. CONCLUSION We describe a patient with a new form of autosomal recessive IFN-γ deficiency, with intracellular, but not extracellular IFN-γ. IFN-γ1b treatment appears to have been beneficial in this patient, with no recurrence of mycobacterial infection over a period of more than 30 months. This targeted treatment provides an alternative to HCST in patients with complete IFN-γ deficiency or at least an option to better control mycobacterial infection prior to HCST.
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Affiliation(s)
- Jérémie Rosain
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, INSERM U1163, Paris, France.
- University of Paris Cité, Imagine Institute, Paris, France.
- Study Center for Primary Immunodeficiencies, Necker Hospital for Sick Children, Assistance Publique Hôpitaux de Paris (AP-HP), Paris, France.
| | - Ayca Kiykim
- Pediatric Allergy and Immunology, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Alexandre Michev
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, INSERM U1163, Paris, France
- Pediatric Clinic, IRCCS Policlinico "San Matteo" Foundation, University of Pavia, Pavia, Italy
| | - Yasemin Kendir-Demirkol
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY, USA
- Department of Pediatric Genetics, Umraniye Education and Research Hospital, Istanbul, Turkey
| | - Darawan Rinchai
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY, USA
| | - Jessica N Peel
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY, USA
| | - Hailun Li
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, INSERM U1163, Paris, France
- University of Paris Cité, Imagine Institute, Paris, France
| | - Suheyla Ocak
- Pediatric Hematology and Oncology, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | | | - Tom Le Voyer
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, INSERM U1163, Paris, France
- University of Paris Cité, Imagine Institute, Paris, France
- Clinical Immunology Department, Saint-Louis Hospital, AP-HP, Paris, France
| | - Quentin Philippot
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, INSERM U1163, Paris, France
- University of Paris Cité, Imagine Institute, Paris, France
| | - Taushif Khan
- Department of Immunology, Sidra Medicine, Doha, Qatar
| | - Anna-Lena Neehus
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, INSERM U1163, Paris, France
- University of Paris Cité, Imagine Institute, Paris, France
| | - Mélanie Migaud
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, INSERM U1163, Paris, France
- University of Paris Cité, Imagine Institute, Paris, France
| | - Camille Soudée
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, INSERM U1163, Paris, France
- University of Paris Cité, Imagine Institute, Paris, France
| | - Stéphanie Boisson-Dupuis
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, INSERM U1163, Paris, France
- University of Paris Cité, Imagine Institute, Paris, France
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY, USA
| | - Nico Marr
- Department of Immunology, Sidra Medicine, Doha, Qatar
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Alessandro Borghesi
- Neonatal Intensive Care Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Jean-Laurent Casanova
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, INSERM U1163, Paris, France
- University of Paris Cité, Imagine Institute, Paris, France
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY, USA
- Howard Hughes Medical Institute, New York, NY, USA
- Department of Pediatrics, Necker Hospital for Sick Children, AP-HP, Paris, France
| | - Jacinta Bustamante
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, INSERM U1163, Paris, France.
- University of Paris Cité, Imagine Institute, Paris, France.
- Study Center for Primary Immunodeficiencies, Necker Hospital for Sick Children, Assistance Publique Hôpitaux de Paris (AP-HP), Paris, France.
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY, USA.
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Pegoraro F, Mazzariol M, Trambusti I, Bakhshi S, Mallick S, Dunkel IJ, van den Bos C, Tezol Ö, Shan S, Ocak S, Giordano F, De Fusco C, Gaspari S, Buccoliero AM, Coniglio ML, Buti E, Romagnani P, Picarsic J, Donadieu J, Diamond EL, Emile JF, Sieni E, Haroche J, Vaglio A. Childhood-onset Erdheim-Chester disease in the molecular era: clinical phenotypes and long-term outcomes of 21 patients. Blood 2023; 142:1167-1171. [PMID: 37490651 PMCID: PMC10934279 DOI: 10.1182/blood.2023020569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 06/06/2023] [Accepted: 06/25/2023] [Indexed: 07/27/2023] Open
Abstract
Erdheim-Chester disease (ECD) is a rare histiocytic disorder that can present as a localized infiltration of foamy histiocytes or a multisystem disease that may be life-threatening. It is extremely rare in children. Pegoraro and colleagues present the clinical and molecular features of 21 patients with pediatric ECD through a large international collaboration, documenting that it resembles its adult counterpart, with similar molecular features and responses to agents targeting BRAF and MEK.
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Affiliation(s)
- Francesco Pegoraro
- Department of Health Sciences, University of Florence, Florence, Italy
- Hematology and Oncology Unit, Meyer Children’s Hospital Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Florence, Italy
| | - Martina Mazzariol
- Department of Medical Sciences, University of Turin, Turin, Italy
- Nephrology and Dialysis Unit, Meyer Children’s Hospital IRCCS, Florence, Italy
| | - Irene Trambusti
- Hematology and Oncology Unit, Meyer Children’s Hospital Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Florence, Italy
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Sameer Bakhshi
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Saumyaranjan Mallick
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Ira J. Dunkel
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Cor van den Bos
- Department of Hemato-Oncology, Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - Özlem Tezol
- Department of Pediatrics, Mersin University Faculty of Medicine, Mersin, Turkey
| | - Shijun Shan
- Department of Dermatology, No. 1 Hospital of China Medical University, Shenyang, China
| | - Suheyla Ocak
- Department of Pediatric Hematology-Oncology, Istanbul University Cerrahpasa, Cerrahpasa Faculty of Medicine, Istanbul, Turkey
| | - Flavio Giordano
- Department of Neurosurgery, Meyer Children’s Hospital IRCCS, Florence, Italy
- NEUROFARBA Department, University of Florence, Florence, Italy
| | - Carmela De Fusco
- Department of Oncology, Azienda Ospedaliera di Rilievo Nazionale Santobono-Pausilipon, Pausilipon Hospital, Naples, Italy
| | - Stefania Gaspari
- Department of Pediatric Hematology/Oncology, Cellular and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | | | - Maria Luisa Coniglio
- Hematology and Oncology Unit, Meyer Children’s Hospital Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Florence, Italy
| | - Elisa Buti
- Nephrology and Dialysis Unit, Meyer Children’s Hospital IRCCS, Florence, Italy
| | - Paola Romagnani
- Nephrology and Dialysis Unit, Meyer Children’s Hospital IRCCS, Florence, Italy
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio," University of Florence, Florence, Italy
| | - Jennifer Picarsic
- Cincinnati Children’s Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH
| | - Jean Donadieu
- Pediatric Oncology and Hematology, Armand-Trousseau Hospital, Assistance Publique-Hôpitaux de Paris, EA4340-BECCOH, Referral Center for Histiocytoses Université de Versailles Saint-Quentin-en-Yvelines, Paris, France
| | - Eli L. Diamond
- Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Jean-François Emile
- EA4340 BECCOH, Université de Versailles Saint-Quentin-en-Yvelines, Service de Pathologie, Hôpital Ambroise Paré, Assistance Publique–Hôpitaux de Paris, Boulogne, France
| | - Elena Sieni
- Hematology and Oncology Unit, Meyer Children’s Hospital Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Florence, Italy
| | - Julien Haroche
- Department of Internal Medicine, Institut E3M French Reference Centre for Histiocytosis, Pitié-Salpȇtrière Hospital, Assistance Publique-Hôpitaux de Paris, Sorbonne Université, Paris, France
| | - Augusto Vaglio
- Nephrology and Dialysis Unit, Meyer Children’s Hospital IRCCS, Florence, Italy
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio," University of Florence, Florence, Italy
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Decouvreur C, Lecocq M, Pilette C, Aboubakar Nana F, Ocak S. [Potential therapeutic implication of focal adhesion kinase in small-cell lung cancer]. Rev Mal Respir 2023; 40:222-224. [PMID: 36828677 DOI: 10.1016/j.rmr.2023.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 02/25/2023]
Abstract
The molecular steps leading to small cell lung cancer (SCLC) development and progression are still poorly understood, resulting in the absence of targeted therapy and an extremely poor prognosis. Activation of Focal Adhesion Kinase (FAK) plays a key role in the invasive behavior of this cancer in vitro. Our hypothesis is that FAK could be a therapeutic target in SCLC. Our work aims to describe a mouse model to study the role of FAK and the antitumoral potential of its inhibition in SCLC in vivo.
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Affiliation(s)
- C Decouvreur
- Université catholique de Louvain (UCLouvain), institut de recherche expérimentale et clinique (IREC), pôle de pneumologie (PNEU), Bruxelles, Belgique; UCLouvain, CHU UCL Namur (site de Godinne), service de pneumologie, Namur, Belgique.
| | - M Lecocq
- Université catholique de Louvain (UCLouvain), institut de recherche expérimentale et clinique (IREC), pôle de pneumologie (PNEU), Bruxelles, Belgique
| | - C Pilette
- Université catholique de Louvain (UCLouvain), institut de recherche expérimentale et clinique (IREC), pôle de pneumologie (PNEU), Bruxelles, Belgique; UCLouvain, cliniques universitaires Saint-Luc, service de pneumologie, Bruxelles, Belgique
| | - F Aboubakar Nana
- Université catholique de Louvain (UCLouvain), institut de recherche expérimentale et clinique (IREC), pôle de pneumologie (PNEU), Bruxelles, Belgique; UCLouvain, cliniques universitaires Saint-Luc, service de pneumologie, Bruxelles, Belgique
| | - S Ocak
- Université catholique de Louvain (UCLouvain), institut de recherche expérimentale et clinique (IREC), pôle de pneumologie (PNEU), Bruxelles, Belgique; UCLouvain, CHU UCL Namur (site de Godinne), service de pneumologie, Namur, Belgique
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4
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Decouvreur C, Lecocq M, Aboubakar F, Ocak S. Développement d’un modèle murin pour étudier le potentiel thérapeutique de la kinase de l’adhérence focale dans le cancer pulmonaire à petites cellules. Rev Mal Respir 2023. [DOI: 10.1016/j.rmr.2022.11.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Karaaslan BG, Burtecene N, Mustu U, Ocak S, Kasapcopur O, Kıykım A, Cokugras H. Evaluation of pediatric patients with suspected polyethylene glycol and polysorbate allergy before mRNA SARS-CoV2 vaccination. Allergol Immunopathol (Madr) 2023; 51:174-180. [PMID: 37169575 DOI: 10.15586/aei.v51i3.800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 01/29/2023] [Indexed: 05/13/2023]
Abstract
mRNA vaccines, particularly, have been associated with an increased risk of allergic reactions and rarely anaphylaxis. Although rare, vaccine reactions can cause significant anxiety and fear in the population, leading to indecision and vaccine refusal. This study aimed to retrospectively evaluate the role of polyethylene glycol (PEG) sensitivity in vaccination decision-making in pediatric patients at high risk of allergy or with suspected allergic reactions to the first dose of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) vaccine. Seventeen enrolled patients were found to have decreased readiness to receive the Coronavirus Disease 2019 (COVID-19) vaccine after developing hypersensitivity to multiple and/or injectable drugs. Skin testing was performed. A basophil activation test with PEG-2000 and 4000 was performed on three patients who were ineligible for skin prick tests. Nine patients with negative tests received the vaccine without complications. One patient had urticarial angioedema despite negative tests. Three patients with positive tests did not agree to desensitization with the mRNA vaccine, and one of them was vaccinated with the inactivated COVID-19 vaccine. Four patients recurred despite negative tests. The general recommendation for patients describing severe reactions to drugs, foods, and allergens, such as toxins that do not contain the adjuvants of the SARS-CoV-2 vaccines, is to be routinely vaccinated with safety precautions. Excipients such as PEG and polysorbate-80 used in COVID-19 vaccines could be potential allergens, but this hypothesis is unclear. The predictive values of these adjuvants for skin testing and in vitro testing are controversial. Further research is needed on the hypersensitivity reactions of adjuvants, the predictive values of skin tests, and etiopathogenesis.
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Affiliation(s)
- Betul Gemici Karaaslan
- Department of Pediatric Allergy and Immunology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Nihan Burtecene
- Department of Pediatric Allergy and Immunology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ulviye Mustu
- Department of Pediatric Allergy and Immunology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Suheyla Ocak
- Department of Pediatric Hematology and Oncology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ozgur Kasapcopur
- Department of Pediatric Rheumatology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ayca Kıykım
- Department of Pediatric Allergy and Immunology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Haluk Cokugras
- Department of Pediatric Allergy and Immunology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
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Pusswald G, Ocak S, Stögmann E, Lehrner J. Neurocognitive testing in predicting conversion to Alzheimer's disease. CHEMOSENS PERCEPT 2022. [DOI: 10.1007/s12078-022-09306-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Abstract
Introduction
Alzheimer’s disease (AD) is a neurodegenerative disorder that affects memory, thinking, attention, and emotion or AD. Smelling problems are frequent symptoms of dementia. The aim of this study was to evaluate whether it is possible to predict if someone with anosmia or hyposmia has a higher risk of getting dementia or even AD.
Methods
This study was a retrospective longitudinal study, and the data used were part of a larger research project, the Vienna Conversion to Dementia Study. The 173 participants were divided into four groups based on cognitive features such as healthy control (HC), subjective cognitive decline (SCD), non-amnestic mild cognitive impairment (naMCI), and amnestic mild cognitive impairment (aMCI). Olfactory assessment and neurocognitive assessment were administered.
Results
We found that 30.5% of aMCI patients converted into AD after an average of about two years. The corresponding ROC analyses for olfactory testing showed that Sniffin’ Sticks revealed significant results regarding the conversion to AD, whereas the Assessment of Self-Reported Olfactory Functioning and olfaction-related quality of life (ASOF) inventory using the Subjective Olfactory Capability (SOC) subscale, the Smell-Related Problems (SRP) subscale, and the Olfaction-Related Quality of life (ORQ) did not. A logistic regression showed that among the olfactory test procedures, only the Sniffin’ Sticks enabled a relevant prognosis. Including neurocognitive measures in the model, only VSRT and the Trail Making Test-B. The other predictors did not contribute to the prediction of conversion to AD.
Conclusion
Unlike self-reporting of olfactory functioning, olfactory testing using standardized tests may have potential for predicting dementia, especially AD. However, olfactory tests have lower predictive power than neurocognitive tests such as verbal memory and divided attention tests.
Implications
Diagnostic tools for predicting dementia as accurately and early as possible are important. Olfactory assessment, compared to neurocognitive tests for verbal memory and divided attention, is inferior in predicting the prognosis of AD.
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Ciftci AB, Ocak S. A comparison of hernia sac ligation versus invagination in Lichtenstein tension-free mesh hernioplasty: does the type of hernia play a role in outcomes? Hernia 2022; 26:1153-1159. [PMID: 35725851 DOI: 10.1007/s10029-022-02637-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/27/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Management of the indirect hernial sac in inguinal hernia repairs has long been a subject of debate among general surgeons. Although hernial sac high ligation (HL) is a time-honored concept in groin hernia surgery, non-ligation/invagination is gaining popularity. This study was intended to compare the effects of hernia sac ligation and invagination in patients undergoing Lichtenstein mesh hernioplasty (LMH). Another aim was to investigate the possible association between the hernial defect size and postoperative early pain in both groups. METHODS Patients with indirect inguinal hernia undergoing elective LMH under spinal anesthesia were included in this prospective randomized study. Patients were classified according to European Hernia Society (EHS) criteria and were randomized into two groups, HL and non-HL/invagination. Postoperative pain levels at 6, 12, and 24 h, 7 days, and 1 year were compared using a ten-point visual analog scale (VAS). In addition, recurrence was examined in the postoperative first year. Postoperative complications, length of hospital stay, drain use, and surgery times were evaluated as secondary outcomes. This study was registered at www. CLINICALTRIALS gov . (The clinicaltrials.gov ID number is: NCT05308251). RESULTS Ninety-three out of a total of 108 patients were included in the study between January 2020 and January 2021 (HL group n = 44, non-HL group n = 49). Demographic characteristics were comparable between the groups. Mean VAS scores were significantly higher in the HL group at 6 and 12 h postoperatively (p < 0.05 and p = 0.036 respectively). While there was no difference in pain levels between the groups in EHS 1 and EHS 2 hernias (p > 0.05 for all), VAS scores were significantly higher in the ligation group in EHS 3 hernias (p < 0.05 for all). Recurrence and complication rates were unaffected with non-ligation at a median 18 months follow-up. CONCLUSION Hernia sac invagination was superior to ligation in patients who underwent LMH, as it reduced early postoperative pain levels without disturbing repair integrity. We therefore recommend that ligating the hernial sac be avoided, especially in EHS 3 patients who undergo LMH.
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Affiliation(s)
- A Burak Ciftci
- Department of General Surgery, Samsun University, Samsun Training and Research Hospital, Barış Bulvarı, Kadıköy Mahallesi, No:199 PK:55090, İlkadım, Samsun, Turkey.
| | - S Ocak
- Department of General Surgery, Samsun University, Samsun Training and Research Hospital, Barış Bulvarı, Kadıköy Mahallesi, No:199 PK:55090, İlkadım, Samsun, Turkey
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Abstract
The longer diagnostic intervals in low- and middle-income countries have been proposed among the possible causes of poorer outcomes in children with cancer. In this single-center study from Turkey, the diagnostic intervals and survival status of 138 children with solid tumors and lymphoma (excluding leukemia) were prospectively evaluated. The median total interval (from the beginning of the first cancer-related symptom to the first day of the cancer-specific therapy), the median patient interval (the time interval from the notification of the first cancer-related symptom to the first admission to a healthcare facility), and the median physician interval (the time interval between the first healthcare admission to the first pediatric oncology visit) were 65, 26, and 24 days, respectively. The estimated 5-year overall survival and event-free survival rates were 80.7% and 69.1%, respectively. The longer time intervals were correlated with age, paternal education, localization, and tumor type. Interestingly, none of the time parameters were found to be associated with survival on regression analysis. In conclusion, the diagnostic delay in children with cancer is multifactorial, and the patient- and disease-related factors are as important as the time intervals on survival.Supplemental data for this article is available online at https://doi.org/10.1080/08880018.2021.1951903.
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Affiliation(s)
- Suheyla Ocak
- Department of Pediatric Hematology-Oncology, Ministry of Health Okmeydani Training and Research Hospital, Istanbul, Turkey.,Department of Pediatric Hematology-Oncology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Hilal Susam Sen
- Department of Pediatric Hematology-Oncology, Ministry of Health Okmeydani Training and Research Hospital, Istanbul, Turkey.,Department of Pediatric Hematology-Oncology, Faculty of Medicine, Afyonkarahisar University of Health Sciences, Istanbul, Turkey
| | - Emine Turkkan
- Department of Pediatric Hematology-Oncology, Ministry of Health Okmeydani Training and Research Hospital, Istanbul, Turkey
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Ocak S, Karaman S, Vural S, Keskindemirci G, Tugcu D, Unuvar A, Karakas Z. Hepatitis B Vaccination in Children With Ongoing Cancer Treatment: A Safety and Efficacy Study of Super-Accelerated Vaccination Scheme. Turk Arch Pediatr 2022; 56:469-473. [PMID: 35110116 PMCID: PMC8849218 DOI: 10.5152/turkarchpediatr.2021.21090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Children with cancer have an increased risk for hepatitis B virus (HBV) infections due to chemotherapy-induced secondary immunodeficiency and frequent blood transfusions. The aim of this study is to evaluate the efficacy and safety of hepatitis B vaccination during the intensive induction chemotherapy in children with cancer found to be seronegative for hepatitis B on admission. MATERIALS AND METHODS Children newly diagnosed with cancer were evaluated for the presence of hepatitis B surface antigen (HBsAg) and antibody on admission. The children negative for both were included in the study. A super-accelerated vaccination scheme (3 booster doses at days 1-5, 8-12, and 28-33) was administered to these seronegative children concurrently with induction chemotherapy. Antibody response was checked 4-8 weeks after the last vaccination and 6 months after the end of the treatment. RESULTS Eleven out of 122 children were seronegative for hepatitis B on admission (9%). Acute lymphoblastic leukemia, lymphoma, and solid tumors were diagnosed in 5, 4, and 2 children, respectively. Complete seroconversion was achieved in 4-8 weeks after the last vaccination with high titers of anti-HBs antibody, and all patients remained antibody-positive until 6 months after the completion of chemotherapy. CONCLUSION The risk of transfusion-related infections increases with a number of transfused products and donor exposures, and it is more significant for immunosuppressed children with hematologic and oncologic malignancies. Hepatitis B vaccination could safely be applied with brisk and sustained responses in this vulnerable population, based on the local epidemiological data.
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Affiliation(s)
- Suheyla Ocak
- Department of Pediatric Hematology-Oncology, Istanbul University School of Medicine, Istanbul, Turkey
| | - Serap Karaman
- Department of Pediatric Hematology-Oncology, Istanbul University School of Medicine, Istanbul, Turkey
| | - Sema Vural
- Department of Pediatric Hematology-Oncology, University of Health Sciences, Sisli Research and Training Hospital, Istanbul, Turkey
| | - Gonca Keskindemirci
- Department of Social Pediatrics, Istanbul University School of Medicine, Istanbul, Turkey
| | - Deniz Tugcu
- Department of Pediatric Hematology-Oncology, Istanbul University School of Medicine, Istanbul, Turkey
| | - Aysegul Unuvar
- Department of Pediatric Hematology-Oncology, Istanbul University School of Medicine, Istanbul, Turkey
| | - Zeynep Karakas
- Department of Pediatric Hematology-Oncology, Istanbul University School of Medicine, Istanbul, Turkey
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Abstract
Objective After chemotherapy, cancer survivors suffer from acquired immunological defects and become vulnerable to vaccine-preventable diseases. There are no universally approved revaccination guidelines for non-transplanted oncology patients. This study aimed to share our experience of revaccination in childhood cancer survivors to plan future vaccination schedules. Materials and Methods This retrospective study was conducted in a Pediatric Oncology Department of a university-affiliated hospital. Patients who were diagnosed with malignancy other than leukemia constituted the study population. Patients were directed for revaccination 6 months after the cessation of treatment. Revaccination was performed according to patients' vaccination status before chemotherapy and seronegativity. Results Of the 64 patients in the study, 44 (68.75%) were boys. The mean age at the time of diagnosis and at start of vaccination was 8.8±5.3 years and 10.6±5.1 years, respectively. Hodgkin's lymphoma was the most common diagnosis. The vaccination schedule of 7 patients was interrupted because of chemotherapy; after completing the missing vaccine doses, the serology of 2 patients was negative for at least 2 antigens. The vaccination schedule of 57 patients was completed before beginning chemotherapy and 52 of them were seronegative for at least 1 antigen. No adverse reactions or life-threatening infections were observed because of vaccinations. Conclusion There are different approaches when vaccinating the oncology patients after chemotherapy. Watching out for the four touchstones mentioned in our study will protect the patient and do no harm. More studies are needed to constitute universal and standardized revaccination guidelines for these patients.
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Affiliation(s)
- Pinar Yilmazbas
- Department of Pediatrics, Health Science University, Okmeydani Training and Research Hospital, Istanbul, Turkey
| | - Hilal Susam Sen
- Department of Pediatric Hematology Oncology, Health Science University, Okmeydani Training and Research Hospital, Istanbul, Turkey
| | - Suheyla Ocak
- Department of Pediatric Hematology Oncology, Istanbul University Cerrahpasa, Cerrahpasa Faculty of Medicine, Istanbul, Turkey
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Vanderputten M, Aboubakar F, Bouzin C, Hoton D, Pop CS, Lecocq M, Ambroise J, Pilette C, Ocak S. P72.10 Prognostic Significance of IgA+ B Cells in Non-Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Aydemir S, Ocak S, Saygılı S, Hopurcuoğlu D, Haşlak F, Kıykım E, Aktuğlu Zeybek Ç, Celkan T, Demirgan EB, Kasapçopur Ö, Çokuğraş H, Kıykım A, Canpolat N. Telemedicine Applications in a Tertiary Pediatric Hospital in Turkey During COVID-19 Pandemic. Telemed J E Health 2020; 27:1180-1187. [PMID: 33301373 DOI: 10.1089/tmj.2020.0381] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background: A novel type of Coronavirus emerged at Wuhan in late 2019 involving preferentially the respiratory system. Owing to the rapid spread, almost 22 million people became infected and 700,000 died. Similar to other countries, the need for additional hospital beds and intensive care units required diversion of health care resources toward the care for those with COVID-19 in Turkey. Telemedicine appeared as a safe and low-cost alternative for the maintainability of pediatric health services during the pandemics. Within this context, we aimed to deliver the health services through telemedicine during the follow-up of chronic childhood diseases. Materials and Methods: This prospective study included five pediatric subspecialties, including allergy immunology, hematology and oncology, nephrology, rheumatology, and inborn metabolic disorders. After the interview, patients and involved physicians were requested to fill out a questionnaire designed to measure the level of satisfaction and the quality of the service we offered. Results: Of the 263 interviews, overall patient and physician satisfaction was 99% and 87%, respectively. As results of the interviews, 250 routine visits were performed, 181 acute complaints were assessed, drug changes were made in 118 patients, 9 patients were determined to be unable to get their drugs, and 12 who misused their drugs. The main advantage of the telemedicine declared by the patients was "not to waste time for transportation." The main concerns of the participants were inability to perform physical and laboratory examinations. Conclusion: Consequently, we considered telemedicine as a feasible alternative not only during pandemics but also in daily practice in Turkey.
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Affiliation(s)
- Sezin Aydemir
- Division of Pediatric Allergy and Immunology, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Suheyla Ocak
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Seha Saygılı
- Division of Pediatric Nephrology, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Duhan Hopurcuoğlu
- Division of Inborn Disorders of Metabolism, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Fatih Haşlak
- Division of Pediatric Rheumatology, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ertuğrul Kıykım
- Division of Inborn Disorders of Metabolism, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Çiğdem Aktuğlu Zeybek
- Division of Inborn Disorders of Metabolism, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Tiraje Celkan
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ebru Burcu Demirgan
- Division of Pediatric Nephrology, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Özgür Kasapçopur
- Division of Pediatric Rheumatology, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Haluk Çokuğraş
- Division of Pediatric Allergy and Immunology, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ayça Kıykım
- Division of Pediatric Allergy and Immunology, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Nur Canpolat
- Division of Pediatric Nephrology, Department of Pediatrics, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
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13
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Karaman S, Unuvar A, Tugcu D, Bilgili F, Genc S, Ocak S, Kendirci A, Demirkol D, Bayramoglu Z, Tuna R, Bilici M, Akkaya E, Karakas Z. Congenital factor XIII deficiency with the presence of inhibitor: a case report. Leuk Res 2019. [DOI: 10.1016/s0145-2126(19)30416-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Ocak S, Kebudi R, Cebeci Z, Buyukbabani N, Bilgic B, Tuncer S. Neuroblastoma of the Iris in Children. J Pediatr Ophthalmol Strabismus 2019; 56:e12-e16. [PMID: 30747977 DOI: 10.3928/01913913-20190125-01] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 11/02/2018] [Indexed: 11/20/2022]
Abstract
Neuroblastoma of the iris is an extremely rare clinical entity. An otherwise healthy 2-month-old male infant presented to the oncology clinic with a nodular whitish iris lesion in his right eye. The excisional tumor biopsy was consistent with a pathological diagnosis of neuroblastoma with differentiation and negative MYCN gene mutation. Further systemic evaluation revealed a right adrenal mass with no metastatic lesion. The biopsy of the adrenal lesion was also consistent with neuroblastoma. After four courses of chemotherapy, the adrenal mass was completely resected. The patient underwent two additional courses of postoperative chemotherapy and continued retinoic acid treatment. The patient is under regular follow-up with no evidence of recurrence 36 months after the initial diagnosis. This is the first case report to present a histopathological verification of neuroblastoma of the iris. The authors suggest that neonates and infants who are diagnosed as having neuroblastoma undergo an ophthalmologic examination after the initial diagnosis to investigate the true incidence of small iris lesions in neuroblastoma that may have been unrecognized. Neuroblastoma should be included in the differential diagnosis of amelanotic iris lesions in infants and young children. [J Pediatr Ophthalmol Strabismus. 2019;56:e12-e16.].
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Unal S, Yalcin MG, Ocak S, Yalcin R, Ozmen SF. Computation of gamma radioactivity of natural rocks in the vicinity of Antalya province and its effect on health. KERNTECHNIK 2018. [DOI: 10.3139/124.110895] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AbstractThe aim of this study is to determine uranium (238U), potassium (40K) and thorium (232Th) in the radioactive elements by measuring the natural rocks in the vicinity of Antalya province by using High-purity Germanium (HPGe) Detector with gamma spectrometry 69. At the end of the measurements, total absorbed dose rates of the rock samples have been found to be within the normal range of values between 3.10 nGy/h and 117.35 nGy/h. While the minimum value of Raeq has been determined to be 6.36 Bq/kg at sample S8, the maximum value has been determined as 250.15 Bq/kg at sample S4. All of the values obtained at the end of the study have been determined to be lower than the maximum Raeq value (370 Bq/kg) and the limit values for industrial products which ranges between 370 – 740 Bq/kg. ARa, ATh and AK; 232Th, 40K and 226Ra of radionuclides are the activity concentrations in terms of Bq/kg. The hex value should be less than 1. The value is based on the upper limit of Raeq (370 Bq/kg). All of the results obtained are less than the limit value of 1.
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Affiliation(s)
- S. Unal
- 1Akdeniz University, Engineering Geology, 07058, Antalya, Turkey
| | - M. G. Yalcin
- 1Akdeniz University, Engineering Geology, 07058, Antalya, Turkey
| | - S. Ocak
- 2Gazi University, Graduate School of Natural and Applied Sciences, Ankara, Turkey
| | - R. Yalcin
- 1Akdeniz University, Engineering Geology, 07058, Antalya, Turkey
| | - S. F. Ozmen
- 3Akdeniz University, Department of Physic, 07058, Antalya, Turkey
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16
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Akgül Ö, Ocak S, Gündoğdu SB, Yalaza M, Güldoğan CE, Tez M. Comparison of East and West Survival Nomograms in Turkish Gastric Cancer Patients Who Underwent Radical Surgery. Scand J Surg 2018; 107:308-314. [PMID: 29637843 DOI: 10.1177/1457496918766724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND AND AIM: The clinicopathological demonstrations of gastric cancer vary widely between Eastern and Western countries. Turkey is situated in Europe and Middle East which acts as a bridge between east and west. We aimed to validate the two popular nomograms of east and west origin by means of patients who underwent curative surgery for gastric cancer in our country. MATERIAL AND METHODS: Of the 202 patients diagnosed with gastric cancer between the years 2006 and 2013, 145 of these patients whose data were sufficient were included in the study. For all patients, demographic, laboratory, operative, and pathologic findings were documented. For each patient, prognostic factors were incorporated into the nomograms for estimating 5-year survival probability. RESULTS: For a Turkish cohort, the western nomogram showed a better discriminative capacity (AUC = 0.721, 95% confidence interval 0.637-0.806) and was better calibrated (the Hosmer-Lemeshow goodness-of-fit test p = 0.323), as compared to the eastern nomogram with AUC = 0.615, 95% confidence interval 0.522-0.708, and p = 0.077, respectively. CONCLUSION: Western nomogram was found to be more effective than eastern nomogram in prediction of estimating 5-year survival probability in patients with resectable gastric cancer in Turkish population.
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Affiliation(s)
- Ö Akgül
- 1 Department of Surgery, Ankara Numune Education and Research Hospital, Ankara, Turkey
| | - S Ocak
- 2 Department of Surgery, Samsun Education and Research Hospital, Samsun, Turkey
| | - S B Gündoğdu
- 1 Department of Surgery, Ankara Numune Education and Research Hospital, Ankara, Turkey
| | - M Yalaza
- 1 Department of Surgery, Ankara Numune Education and Research Hospital, Ankara, Turkey
| | - C E Güldoğan
- 3 Department of Surgery, Liv Hospital, Ankara, Turkey
| | - M Tez
- 1 Department of Surgery, Ankara Numune Education and Research Hospital, Ankara, Turkey
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17
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Nana FA, Lecocq M, Ladjemi M, Detry B, Dupasquier S, Massion P, Sibille Y, Sibille Y, Pilette C, Pilette C, Ocak S, Ocak S. P3.15-004 Distinct Role of FAK Kinase and C-Terminal Domains on Small-Cell Lung Cancer Proliferation. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Kebudi R, Bayram I, Yagci-Kupeli B, Kupeli S, Sezgin G, Pekpak E, Oymak Y, Ince D, Emir S, Tugcu D, Ozek G, Bay A, Kupesiz FT, Vural S, Ocak S, Yaman Y, Koksal Y, Timur C, Unal S, Vergin C. Refugee children with cancer in Turkey. Lancet Oncol 2016; 17:865-867. [PMID: 27396633 DOI: 10.1016/s1470-2045(16)30211-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 05/26/2016] [Indexed: 02/07/2023]
Affiliation(s)
- Rejin Kebudi
- Istanbul University, Cerrahpasa Medical Faculty and Oncology Institute, Pediatric Hematology-Oncology, Istanbul, Turkey.
| | - Ibrahim Bayram
- Cukurova University Faculty of Medicine, Pediatric Oncology and Pediatric Bone Marrow Transplantation Unit, Adana, Turkey
| | - Begul Yagci-Kupeli
- Adana Numune Training and Research Hospital, Pediatric Hematology-Oncology, Adana, Turkey
| | - Serhan Kupeli
- Cukurova University Faculty of Medicine, Pediatric Oncology and Pediatric Bone Marrow Transplantation Unit, Adana, Turkey
| | - Gulay Sezgin
- Cukurova University Faculty of Medicine, Pediatric Oncology and Pediatric Bone Marrow Transplantation Unit, Adana, Turkey
| | - Esra Pekpak
- Gaziantep Children's Hospital, Pediatric Hematology-Oncology, Gaziantep, Turkey
| | - Yesim Oymak
- Dr BehcetUz Children's Hospital, Pediatric Hematology-Oncology Clinic, Izmir, Turkey
| | - Dilek Ince
- Dokuz Eylul Oncology Institute, Pediatric Oncology, Izmir, Turkey
| | - Suna Emir
- Ankara Child Health Hematology-Oncology Education and Research Hospital, Pediatric Hematology-Oncology, Ankara, Turkey
| | - Deniz Tugcu
- Istanbul University, Istanbul Medical Faculty, Pediatric Hematology-Oncology, Istanbul, Turkey
| | - Gulcihan Ozek
- Sanliurfa Childrens Hospital, Pediatric Hematology-Oncology, Sanliurfa, Turkey
| | - Ali Bay
- Gaziantep University, Pediatric Hematology, Gaziantep, Turkey
| | - Funda Tayfun Kupesiz
- Diyarbakır Children's Hospital, Pediatric Hematology-Oncology, Diyarbakır, Turkey
| | - Sema Vural
- Sisli Etfal Education and Research Hospital, Pediatric Oncology, Istanbul, Turkey
| | - Suheyla Ocak
- Okmeydani Education and Research Hospital, Pediatric Oncology, Istanbul, Turkey
| | - Yontem Yaman
- Sutcu Imam University, Faculty of Medicine, Pediatric Hematology-Oncology, Kahramanmaras, Turkey
| | - Yavuz Koksal
- Selcuk University, Faculty of Medicine, Pediatric Oncology, Konya, Turkey
| | - Cetin Timur
- Medeniyet University, Pediatric Hematology, Istanbul, Turkey
| | - Selma Unal
- Mersin University, Faculty of Medicine, Pediatric Hematology-Oncology, Mersin, Turkey
| | - Canan Vergin
- Dr BehcetUz Children's Hospital, Pediatric Hematology-Oncology Clinic, Izmir, Turkey
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19
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Rosoux A, Pauwels P, Duplaquet F, D'Haene N, Weynand B, Delos M, Menon R, Heukamp LC, Thunnissen E, Ocak S. Effectiveness of crizotinib in a patient with ALK IHC-positive/FISH-negative metastatic lung adenocarcinoma. Lung Cancer 2016; 98:118-121. [PMID: 27393517 DOI: 10.1016/j.lungcan.2016.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 05/30/2016] [Accepted: 06/01/2016] [Indexed: 11/30/2022]
Abstract
We report a case of crizotinib effectiveness in a heavily pretreated patient with a metastatic NSCLC initially considered IHC-positive and FISH-negative for ALK rearrangement. After repeated analyses of tumor samples, borderline ALK FISH-positivity (18.5% positive cells) was demonstrated.
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Affiliation(s)
- A Rosoux
- Division of Pulmonology, Université catholique de Louvain (UCL), CHU UCL Namur, Yvoir, Belgium
| | - P Pauwels
- Center for Oncologic Research (CORE), Antwerp University, Antwerp, Belgium
| | - F Duplaquet
- Division of Pulmonology, Université catholique de Louvain (UCL), CHU UCL Namur, Yvoir, Belgium
| | - N D'Haene
- Department of Pathology, Université Libre de Bruxelles (ULB), Hôpital Erasme, Brussels, Belgium
| | - B Weynand
- Department of pathology, UZ Leuven, Leuven, Belgium
| | - M Delos
- Department of Pathology, UCL, CHU UCL Namur, Yvoir, Belgium
| | - R Menon
- Neo New Oncology GmbH, Cologne, Germany
| | | | - E Thunnissen
- Department of Pathology, VU University, Amsterdam, Netherlands
| | - S Ocak
- Division of Pulmonology, Université catholique de Louvain (UCL), CHU UCL Namur, Yvoir, Belgium.
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Aboubakar F, Lecocq M, Detry B, Maha L, Massion P, Sibille Y, Pilette C, Ocak S. Inhibition of the Focal Adhesion Kinase Has Anti-Tumoral Effect in Small-Cell Lung Cancer Cell Lines. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv047.01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Badaoui A, Dahlqvist C, Rahier JF, Weynand B, Ocak S, Deprez PH, Eucher P, Duplaquet F. Combined endoscopic ultrasonography and endobronchial ultrasound-fine-needle aspiration for evaluation of mediastinal lymph nodes. Endosc Ultrasound 2014; 3:S9. [PMID: 26425538 PMCID: PMC4569938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES Endoscopic ultrasonography (EUS) and endobronchial ultrasound-fine-needle aspiration (EBUS-FNA), is an accurate technique for evaluation of mediastinal lymph nodes (MLN) and stadification of lung cancer. The aims of the study are to evaluate the feasibility and the efficacy of the combined technique compared with mediastinoscopy for the diagnosis of MLN. DESIGN AND METHODS All patients with suspected malignant MLN and/or lung lesion identified by positron emission tomography-computed tomography underwent combined EUS-EBUS-FNA. The combined procedure was performed in outpatients under general anesthesia for EUS and sedation by intravenous midazolam for EBUS when performed separately, using linear-array echoendoscopes. The MLN were punctured during the EUS and EBUS-FNA procedures with a 22 gauge needle. RESULTS Thirty-four patients underwent consecutively EUS and EBUS-FNA between September 2011 and November 2013 (8 women, 26 men, mean age of 65.9 year, range: 51-83). Combined EUS-EBUS-FNA was performed in a single time procedure in 26 patients (mean time 50 min) and in two different times in eight patients (mean delay 3 days). Twenty-five malignant and 9 inflammatory lesions were diagnosed. Mediastinoscopy was performed in nine patients and confirmed in eight patients the initial combined EUS-EBUS-FNA diagnosis. The diagnosis was obtained in 91.2% with EUS-FNA, 70.6% with EBUS-FNA and 97% when combined procedure was performed. The overall sensitivity, specificity, positive and negative predictive values of EUS-EBUS-FNA for diagnosing malignancy were 96.5%, 100%, 100% and 90% respectively. No complications related to the procedure were observed. CONCLUSION Combined EUS-EBUS-FNA represents an accurate technique in the diagnosis of MLN, can be done in a single time procedure and has the advantage of being less invasive than mediastinoscopy.
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Affiliation(s)
- A. Badaoui
- Department of Gastroenterology, Digestive Endoscopy Unit, Mont-Godinne University Hospital, Université Catholique de Louvain, Yvoir, Belgium
| | - C. Dahlqvist
- Department of Pneumology, Mont-Godinne University Hospital, Université Catholique de Louvain, Yvoir, Belgium
| | - JF. Rahier
- Department of Gastroenterology, Digestive Endoscopy Unit, Mont-Godinne University Hospital, Université Catholique de Louvain, Yvoir, Belgium
| | - B. Weynand
- Department of Pathology, Mont-Godinne University Hospital, Université Catholique de Louvain, Yvoir, Belgium
| | - S. Ocak
- Department of Pneumology, Mont-Godinne University Hospital, Université Catholique de Louvain, Yvoir, Belgium
| | - PH. Deprez
- Department of Gastroenterology, Digestive Endoscopy Unit, St-Luc University Hospital, Université Catholique de Louvain, Brussels, Belgium
| | - P. Eucher
- Department of Vascular and Thoracic Surgery, Mont-Godinne University Hospital, Université Catholique de Louvain, Yvoir, Belgium
| | - F. Duplaquet
- Department of Pneumology, Mont-Godinne University Hospital, Université Catholique de Louvain, Yvoir, Belgium
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Dincq AS, Gourdin M, Collard E, Ocak S, D'Odémont JP, Dahlqvist C, Lacrosse D, Putz L. Anesthesia for adult rigid bronchoscopy. Acta Anaesthesiol Belg 2014; 65:95-103. [PMID: 25470890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Rigid bronchoscopy under general anesthesia enables performing diagnostic and/or therapeutic procedures in the tracheobronchial tree. This technique is characterized by specific technical problems, insofar as the anesthesiologist and the operators share the same space, namely the airway. Several potential complications (hemorrhage inside the airway, threat to ventilation ...) may arise. These challenges render the ability to use the variable available techniques essential, as well as knowledge of the complications they could entail, and the ability to rapidly solve them. General anesthesia is usually total intravenous anesthesia, using short acting agents. Ventilation can be spontaneous, but more often insured using high-frequency jet ventilation. The hospital infrastructure and staff must have the expertise to perform this particular procedure, in order to limit the complication rate.
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Bougas S, Ninane C, Palumbo S, Baudoux A, Bustin F, Duplaquet F, Maisin F, Ocak S, Vandermoten G, Remouchamps V. EP-1164: A retrospective study of lung stereotactic radiotherapy: 24,3 months of follow up. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31282-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Remouchamps V, Bougas S, Ninane C, Baudoux A, Bustin F, Duplaquet F, Maisin F, Ocak S, Palumbo S, Vandermoten G. PO-0772: Technology evolution improved clinical outcome after SBRT/SABR with 48 Gy in 4 fractions for stage I lung cancer. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)30890-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ocak S, Ogun S, Onder H. Relationship between placental traits and maternal intrinsic factors in sheep. Anim Reprod Sci 2013; 139:31-7. [PMID: 23602010 DOI: 10.1016/j.anireprosci.2013.03.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 03/08/2013] [Accepted: 03/19/2013] [Indexed: 11/15/2022]
Abstract
The relationship between maternal intrinsic factors and placental traits was investigated on three Southern Mediterranean breed of sheep; Cukurova Assaf (CA), Cukurova (C) and Cukurova Meat Sheep (CMS). The effect of parity and birth type were also considered in the study as a potential influencing factor. Our hypothesis was to show that while differences in placental traits between breed, parity and birth type affected lamb condition and survivability, its correlation to maternal intrinsic behavioral factors may also be a strong indicator. The study found breed related differences of maternal behavioral factors and also showed significant correlation of these behavioral patterns to various placental traits. It confirmed earlier findings that parity played a major role in the refinement of these behavioral patterns. Significant differences in birth weight (P<0.05), placental weight (P<0.05), number of cotyledons (P<0.01) and cotyledon length (P<0.05) was seen between breeds. Cotyledon weight (P<0.05), width (P<0.01) and length (P<0.05) were found to differ by parity. Breed and parity interaction significantly influenced cotyledon quantity. While we detected breed specific differences in relation to maternal intrinsic factors we also noticed significant variance within breeds to these behavioral patterns when linked to placental traits. Further study is required on the correlation between placental traits and postnatal behavior on not just the ewes but also on their lambs. This could have a significant bearing on how producers manage and maximize lamb survivability.
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Affiliation(s)
- S Ocak
- Middle East Sustainable Livestock, Biotechnology and Agro-Ecology Research and Development Centre, 27260, Gaziantep, Turkey.
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Erginoz E, Alikasifoglu M, Ercan O, Uysal O, Alp Z, Ocak S, Oktay Tanyildiz G, Ekici B, Yucel IK, Albayrak Kaymak D. The Role of Parental, School, and Peer Factors in Adolescent Bullying Involvement. Asia Pac J Public Health 2013; 27:NP1591-603. [DOI: 10.1177/1010539512473144] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The aim of this study was to explore the relationships between involvement in bullying behaviors and school, family, and peer factors. Health Behavior in School Age Children survey questionnaire was used. Of the students surveyed, 20% were both bully and victim, 11% were bully, and 21% were victim. Being male, poor parental support, and poor monitoring by the father were found to be risk factors for being both bully and victim. Poor academic achievement, having peers at different ages, poor quality of friendship, poor communication with parents, and not being isolated by peers were found to be risk factors for being bully. Not liking school, feeling pressured by school work, poor quality of friendship, poor monitoring by the father, close bonding with mother, and poor status of the peer group were found to be risk factors for being victim. These findings highlight the importance that bullying intervention programs should include country-specific and culture-specific influences for success.
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Affiliation(s)
| | | | - Oya Ercan
- Istanbul University, Istanbul, Turkey
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Ocak S, Onder H. Placental traits and maternal intrinsic factors affected by parity and breed in goats. Anim Reprod Sci 2011; 128:45-51. [PMID: 21945143 DOI: 10.1016/j.anireprosci.2011.08.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 08/22/2011] [Accepted: 08/26/2011] [Indexed: 11/26/2022]
Abstract
The relationship between placental traits and maternal intrinsic factors of Saanen, German Fawn and Damascus goats was investigated. Data was collected from 93 goats. The results of the study demonstrated that there were positive correlations between placental weight (PW) and cotyledon number (CN) (r=0.498, P<0.01), cotyledon weight (CW) (r=0.880, P<0.01), cotyledon density (CD) (r=0.538, P<0.01), cotyledon width (CWI) (r=0.500, P<0.01) cotyledon length (CL) (r=0.414, P<0.01) and cotyledon density (CD) (r=0.278, P<0.05). CN was negatively correlated with placental efficiency (PE) (r=-0.421, P<0.01) and CD (r=-0.325, P<0.05). While expulsion of placenta, right teat length and cotyledon length were affected by parity of doe (P<0.05) birth weight (BW), CN, right teat diameter (RTD), left teat diameter (LTD), CD, and CL were affected by breed (P<0.01). Breed×parity was found significant both for expulsion time of placenta and left teat length (LTL) (P<0.05). Damascus goats had a significantly longer duration of licking and grooming events than others. Saanen was more likely to require birth assistance compared to the German Fawn.
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Affiliation(s)
- S Ocak
- Middle East Sustainable Livestock, Biotechnology and Agro-Ecology Research and Development Centre, University of Zirve, Gaziantep, Turkey.
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Akgul O, Ocak S, Keskek M, Koc M, Tez M. Risk of malignancy in non-diagnostic thyroid fine-needle aspiration biopsy in multinodular goitre patients. Endocr Regul 2011; 45:9-12. [PMID: 21314205 DOI: 10.4149/endo_2011_01_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2023] Open
Abstract
OBJECTIVE Although the majority of biopsies is adequate for a cytological diagnosis, 5-20 % will be insufficient or nondiagnostic. Patients with nondiagnostic FNABs (ND-FNAB) may be further managed by continued observation, repeated FNAB, or thyroidectomy. The aim of this study was to determine the risk of malignancy in ND-FNAB, and to determine if there are any clinical factors that can be used to distinguish malignant versus benign disease in multinodular goitre patients with ND-FNAB. METHODS A total of 411 multinodular goiter patients who underwent both a FNAB and thyroidectomy was the subject of study. Seventy nine of these patients with ND-FNAB were further reviewed retrospectively, and demographical and clinical factors were investigated to determine if there is any predictor of malignancy in this group of patients. Among these patients, FNAB has been repeated one more time in 5 (6.3 %) patients, and two more times in 9 (11.3 %) patients. RESULTS Among 79 patients with ND-FNAB, 10 patients (12.6 %) had malignancy as found postoperatively. There were no differences in age, sex, functional status of the thyroid gland, and nodule size between patients with benign versus malignant disease. CONCLUSION Nondiagnostic FNAB remains a significant problem in the evaluation of thyroid nodules. Despite ultrasound guidance, clinicians should inform patients that there is a 5-15 % malignancy risk of initial nondiagnostic specimens.
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Affiliation(s)
- O Akgul
- 5th Department of Surgery, Ankara Numune Training and Research Hospital, Ankara, Turkey
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Ocak S, Yamashita H, Udyavar AR, Miller AN, Gonzalez AL, Zou Y, Jiang A, Yi Y, Shyr Y, Estrada L, Quaranta V, Massion PP. DNA copy number aberrations in small-cell lung cancer reveal activation of the focal adhesion pathway. Oncogene 2010; 29:6331-42. [PMID: 20802517 DOI: 10.1038/onc.2010.362] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Small-cell lung cancer (SCLC) is the most aggressive subtype of lung cancer in its clinical behavior, with a 5-year overall survival as low as 5%. Despite years of research in the field, molecular determinants of SCLC behavior are still poorly understood, and this deficiency has translated into an absence of specific diagnostics and targeted therapeutics. We hypothesized that tumor DNA copy number alterations would allow the identification of molecular pathways involved in SCLC progression. Array comparative genomic hybridization was performed on DNA extracted from 46 formalin-fixed paraffin-embedded SCLC tissue specimens. Genomic profiling of tumor and sex-matched control DNA allowed the identification of 70 regions of copy number gain and 55 regions of copy number loss. Using molecular pathway analysis, we found a strong enrichment in these regions of copy number alterations for 11 genes associated with the focal adhesion pathway. We verified these findings at the genomic, gene expression and protein level. Focal Adhesion Kinase (FAK), one of the central genes represented in this pathway, was commonly expressed in SCLC tumors and constitutively phosphorylated in SCLC cell lines. Those were poorly adherent to most substrates but not to laminin-322. Inhibition of FAK phosphorylation at Tyr(397) by a small-molecule inhibitor, PF-573,228, induced a dose-dependent decrease of adhesion and an increase of spreading in SCLC cell lines on laminin-322. Cells that tended to spread also showed a decrease in focal adhesions, as demonstrated by a decreased vinculin expression. These results support the concept that pathway analysis of genes in regions of copy number alterations may uncover molecular mechanisms of disease progression and demonstrate a new role of FAK and associated adhesion pathways in SCLC. Further investigations of FAK at the functional level may lead to a better understanding of SCLC progression and may have therapeutic implications.
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Affiliation(s)
- S Ocak
- Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University, Nashville, TN 37232-6838, USA
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Abstract
OBJECTIVE So far, the significance of Hürthle cell predominance in fine needle aspiration biopsy (FNAB) in multinodular goitre (MNG) appears not definitely clarified. The aim of this study was to determine if there are any clinical factors that can be used to distinguish either malignant or benign disease with the aid of FNAB specimen that contains a predominance of Hürthle cells in multinodular goitre patients. METHODS Among 623 patients who were evaluated for multinodular goitre between July 2004 and March 2009, 411 had a FNAB specimen. In 37 (9% of them) the FNAB specimen was interpreted as consistent with a Hürthle cell lesion. These patients comprised the study population and were reviewed retrospectively and their demographical and clinical factors were investigated to determine if there is any predictor of malignancy. RESULTS Among 37 patients with Hürthle cell predominance in FNAB, 29 had benign diseases and 8 had malignant diseases resulting in 21.6% prevalence of malignancy. There were no differences in age, sex, functional status of the thyroid gland, and nodule size between patients with benign versus malignant disease. CONCLUSION Total thyroidectomy should be recommended for all multinodular goitre patients with Hürthle cell predominance in FNAB, since there is no preoperative predictor of malignancy in these cases.
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Affiliation(s)
- M Keskek
- Fifth Department of General Surgery, Ankara Numune Training and Research Hospital, Ankara, Turkey.
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Ocak S, Sos ML, Thomas RK, Massion PP. High-throughput molecular analysis in lung cancer: insights into biology and potential clinical applications. Eur Respir J 2009; 34:489-506. [PMID: 19648524 DOI: 10.1183/09031936.00042409] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
During the last decade, high-throughput technologies including genomic, epigenomic, transcriptomic and proteomic have been applied to further our understanding of the molecular pathogenesis of this heterogeneous disease, and to develop strategies that aim to improve the management of patients with lung cancer. Ultimately, these approaches should lead to sensitive, specific and noninvasive methods for early diagnosis, and facilitate the prediction of response to therapy and outcome, as well as the identification of potential novel therapeutic targets. Genomic studies were the first to move this field forward by providing novel insights into the molecular biology of lung cancer and by generating candidate biomarkers of disease progression. Lung carcinogenesis is driven by genetic and epigenetic alterations that cause aberrant gene function; however, the challenge remains to pinpoint the key regulatory control mechanisms and to distinguish driver from passenger alterations that may have a small but additive effect on cancer development. Epigenetic regulation by DNA methylation and histone modifications modulate chromatin structure and, in turn, either activate or silence gene expression. Proteomic approaches critically complement these molecular studies, as the phenotype of a cancer cell is determined by proteins and cannot be predicted by genomics or transcriptomics alone. The present article focuses on the technological platforms available and some proposed clinical applications. We illustrate herein how the "-omics" have revolutionised our approach to lung cancer biology and hold promise for personalised management of lung cancer.
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Affiliation(s)
- S Ocak
- Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt-Ingram Cancer Center, Nashville, TN 37232-6838, USA
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Ocak S, Emsen E, Koycegiz F, Kutluca M, Onder H. Comparison of placental traits and their relation to litter size and parity weight in sheep. J Anim Sci 2009; 87:3196-201. [DOI: 10.2527/jas.2009-1913] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Civilibal M, Sever L, Numan F, Altun G, Ocak S, Candan C, Kasapcopur O, Caliskan S, Cantasdemir M, Arisoy N. Dissection of the abdominal aorta in a child with Takayasu's arteritis. Acta Radiol 2008; 49:101-4. [PMID: 17963085 DOI: 10.1080/02841850701564491] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Takayasu's arteritis is a chronic inflammatory disease that primarily involves the aorta and its main branches. Varying degrees of narrowing, occlusion, or dilatation develop in the involved vessel segments. However, dissection of the aorta is quite rare in this disease, and it may develop particularly after angioplasty. We report a very rare case of Takayasu's arteritis with dissection of the abdominal aorta just distal to the origin of the inferior mesenteric artery in a 9-year-old girl. She was treated conservatively with close follow-up. At the end of 1 year's follow-up, the dissection of the aorta did not show progression, and new lesions were not identified. To our knowledge, this patient is the youngest child presented with arterial dissection as the initial manifestation of the disease.
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Affiliation(s)
- M. Civilibal
- Department of Pediatric Nephrology and Rheumatology, and Radiology, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey
| | - L. Sever
- Department of Pediatric Nephrology and Rheumatology, and Radiology, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey
| | - F. Numan
- Department of Pediatric Nephrology and Rheumatology, and Radiology, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey
| | - G. Altun
- Department of Pediatric Nephrology and Rheumatology, and Radiology, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey
| | - S. Ocak
- Department of Pediatric Nephrology and Rheumatology, and Radiology, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey
| | - C. Candan
- Department of Pediatric Nephrology and Rheumatology, and Radiology, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey
| | - O. Kasapcopur
- Department of Pediatric Nephrology and Rheumatology, and Radiology, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey
| | - S. Caliskan
- Department of Pediatric Nephrology and Rheumatology, and Radiology, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey
| | - M. Cantasdemir
- Department of Pediatric Nephrology and Rheumatology, and Radiology, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey
| | - N. Arisoy
- Department of Pediatric Nephrology and Rheumatology, and Radiology, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey
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Ocak S, Polosukhin V, Gonzalez A, Pedchenko T, Pilette C, Sibille Y, Massion P. P78 Polymeric immunoglobulin receptor downregulation in lung cancer development. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(08)70078-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Erdogan S, Celik S, Aslantas O, Kontas T, Ocak S. Elevated cAMP levels reverse Brucella melitensis-induced lipid peroxidation and stimulate IL-10 transcription in rats. Res Vet Sci 2006; 82:181-6. [PMID: 17014875 DOI: 10.1016/j.rvsc.2006.07.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2006] [Revised: 07/11/2006] [Accepted: 07/19/2006] [Indexed: 11/25/2022]
Abstract
Brucella species are able to survive and replicate within the phagocytic vacuole of macrophages that induce chronic infection in humans and domestic animals. The activation of oxidative bactericidal activity is one of the defense systems which protect the host from the toxic effects of pathogens. The aim of this study was to evaluate lipid peroxidation, NO production, antioxidative system and inflammation during a period of brucella infection in a rat model; in addition to investigate the role of elevated intracellular cyclic AMP on Brucella-induced events. Brucella significantly induced lipid peroxidation in plasma, liver and spleen by 3-5-fold at 7 days postinfection. NO concentration was significantly elevated in the liver and spleen while unchanged in plasma. Cyclic AMP elevating agent, rolipram, administration (1mg/kg/day i.p., 3 days) gradually suppressed lipid peroxidation and NO formation to the basal level in plasma and spleen whilst only a slight decrease was observed in liver. Brucella considerably decreased SOD activity in the liver and spleen, with rolipram restoring the enzyme activity in liver and activity in spleen being unchanged. Reverse transcriptase PCR analyses showed that Brucella melitensis does not alter TNF-alpha and IFN-gamma transcriptions in liver and spleen. The pathogen did not consistently induce nitric oxide synthase mRNA transcriptions in animals; even in those housed in the same group. IL-10 transcription was induced by rolipram in spleen but not in liver. Our results suggest that activation of the cAMP/PKA pathway suppressed lipid peroxidation and the elevated NO concentrations caused by B. melitensis. Moreover, rolipram induced anti-inflammatory cytokine IL-10 transcription and SOD activity, albeit in a tissue dependent manner.
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Affiliation(s)
- S Erdogan
- Department of Biochemistry, Faculty of Veterinary Medicine, Mustafa Kemal University, 31034 Antakya, Turkey.
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Abstract
Staphylococcus aureus is the most common cause of serious infections in patients undergoing long-term haemodialysis (HD). S. aureus infections in HD patients are associated with considerable morbidity and mortality. Especially, methicillin-resistant S. aureus (MRSA) strains are becoming increasingly multidrug-resistant and have recently developed resistance to vancomycin, used successfully to treat MRSA for more than 30 years. In vitro determination of resistance patterns of S. aureus is critical in terms of administering suitable antimicrobial treatment. The objective of this study was to identify the frequency of S. aureus among diabetic and non-diabetic HD patients and to investigate resistance patterns against various antibiotics used broadly for treatment. This study was carried out between January 2004 and December 2004. In the present survey, 261 patients undergoing HD treatment from three HD units in Hatay were examined. A total of 148 Staphylococcus aureus strains were processed to assess their occurrence rates and antimicrobial susceptibility profiles. S. aureus positivity was determined in 148 (56.7%) of the 261 HD patients and 26 (16.2%) of the 160 individuals in the control group. The difference was significant (p < 0.001). HD length was found to be 38.4 +/- 24.3 months in the patients of S. aureus carrier and 27.3 +/- 18.5 months in non-carrier patients. Significant correlation was also identified between durations those on HD and the isolation of S. aureus (p < 0.001). However, the carrier state was unrelated to the presence of diabetes mellitus (DM), age or sex. In conclusion, nasal carriage of S. aureus was found to be more prevalent in HD patients than that in those in the control group. Also, it is concluded that DM was not a risk factor for the nasal carriage of S. aureus. In addition, the rates of antibiotic resistance of S. aureus strains were found to be quite higher in HD patients than in the control group (p < 0.05).
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Affiliation(s)
- N Duran
- Department of Microbiology and Clinical Microbiology, Mustafa Kemal University, Antakya Haemodialysis Centre, Hatay, Turkey.
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Abstract
Type 2 diabetes mellitus (DM) has emerged as the commonest cause of end-stage renal disease. Haemodialysis (HD) treatment constitutes a high-risk environment for the transmission of hepatitis C virus (HCV). The aim of this study was to establish a potential relationship between type 2 DM and HCV infection in HD patients. Of the 267 HD patients, 67 (25.1%) had type 2 DM and 200 (74.9%) were with diverse aetiology for end-stage renal disease. The serum markers of HCV infection were tested by a second-generation enzyme-linked immunosorbent assay test for antibodies and by qualitative reverse-transcription polymerase chain reaction technique for viral RNA. The overall prevalence of anti-HCV antibodies and HCV RNA was found to be 12.7% (34/267) and 10.1% (27/267), respectively. Patients with type 2 DM were found to have a higher HCV prevalence compared with non-diabetic patients [20.8% (14/67) vs. 10% (20/200)] (p < 0.05). The mean period on dialysis of anti-HCV-positive patients with type 2 DM was shorter than that observed for anti-HCV-positive non-diabetic patients (43.9 +/- 9.8 months vs. 59.7 +/- 28.4 months) (p < 0.05). This study has shown that although the period on dialysis of diabetic patients are shorter than non-diabetic patients, the prevalence of HCV in HD patients with type 2 DM is higher than that detected in non-diabetic HD patients.
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Affiliation(s)
- S Ocak
- Department of Microbiology and Clinical Microbiology, Medical Faculty, Mustafa Kemal University, Hatay, Turkey.
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