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Iyigundogdu I, Kaya Z, Girgin G, Alkan B, Derle E. Transient global amnesia and hippocampal diffusion restriction: an overlooked radiological finding. Acta Neurol Belg 2024:10.1007/s13760-024-02485-1. [PMID: 38446411 DOI: 10.1007/s13760-024-02485-1] [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: 09/02/2023] [Accepted: 01/22/2024] [Indexed: 03/07/2024]
Abstract
Transient global amnesia (TGA) is characterized by isolated sudden anterograde amnesia. Diffusion restriction can be observed in the hippocampus on DWI-MRI at varying rates in TGA patients. This study analyzes the prevalence and characteristics of the hippocampal diffusion restriction (HDR), its relationship with vascular risk factors, and the prevalence of lesions overlooked in routine reports. 91 patients diagnosed with TGA at a tertiary hospital between 2011 and 2022 were evaluated retrospectively. The mean age was 64.8 ± 7.3 years, and 63.7% of patients were female. 75.8% of the patients had at least one vascular risk factor. Focal diffusion restriction was detected in 17 patients (18.5%) on DWI-MRI, with only one being extra-hippocampal. 81.2% of HDR was detected when DWI-MRI scan was performed between 12 and 96 h after the onset of symptoms. HDR was detected most when the imaging was performed in 24 to 48 h (p = 0.03). There was no correlation between the duration of symptoms and the detection rates of HDR (p = 0.55). In 9 patients (53% of 17) diffusion restriction was not specified in routine radiology reports. Although focal ischemia, venous flow abnormalities, migraine and epileptic phenomena have been suggested in its etiology, TGA is a clinical condition of which pathophysiology has not been determined clearly. Signal changes observed in DWI-MRI has led to discussions that cerebrovascular etiology may play a role, yet more comprehensive studies are required to prevent and manage TGA. HDRs can be overlooked in routine reports. Therefore, the DWI-MRI images of patients with TGA should be examined vigilantly.
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Affiliation(s)
- Ilkin Iyigundogdu
- Department of Neurology, Faculty of Medicine, Başkent University, Ankara, Turkey
| | - Zeynep Kaya
- Department of Neurology, Faculty of Medicine, Başkent University, Ankara, Turkey
| | - Guven Girgin
- Department of Neurology, Faculty of Medicine, Başkent University, Ankara, Turkey
| | - Berna Alkan
- Department of Neurology, Faculty of Medicine, Başkent University, Ankara, Turkey
| | - Eda Derle
- Department of Neurology, Faculty of Medicine, Başkent University, Ankara, Turkey.
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2
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Grandclément C, Estoppey C, Dheilly E, Panagopoulou M, Monney T, Dreyfus C, Loyau J, Labanca V, Drake A, De Angelis S, Rubod A, Frei J, Caro LN, Blein S, Martini E, Chimen M, Matthes T, Kaya Z, Edwards CM, Edwards JR, Menoret E, Kervoelen C, Pellat-Deceunynck C, Moreau P, Mbow ML, Srivastava A, Dyson MR, Zhukovsky EA, Perro M, Sammicheli S. Development of ISB 1442, a CD38 and CD47 bispecific biparatopic antibody innate cell modulator for the treatment of multiple myeloma. Nat Commun 2024; 15:2054. [PMID: 38448430 PMCID: PMC10917784 DOI: 10.1038/s41467-024-46310-y] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 02/21/2024] [Indexed: 03/08/2024] Open
Abstract
Antibody engineering can tailor the design and activities of therapeutic antibodies for better efficiency or other advantageous clinical properties. Here we report the development of ISB 1442, a fully human bispecific antibody designed to re-establish synthetic immunity in CD38+ hematological malignancies. ISB 1442 consists of two anti-CD38 arms targeting two distinct epitopes that preferentially drive binding to tumor cells and enable avidity-induced blocking of proximal CD47 receptors on the same cell while preventing on-target off-tumor binding on healthy cells. The Fc portion of ISB 1442 is engineered to enhance complement dependent cytotoxicity, antibody dependent cell cytotoxicity and antibody dependent cell phagocytosis. ISB 1442 thus represents a CD47-BsAb combining biparatopic targeting of a tumor associated antigen with engineered enhancement of antibody effector function to overcome potential resistance mechanisms that hamper treatment of myeloma with monospecific anti-CD38 antibodies. ISB 1442 is currently in a Phase I clinical trial in relapsed refractory multiple myeloma.
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Affiliation(s)
| | - C Estoppey
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - E Dheilly
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | | | - T Monney
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - C Dreyfus
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - J Loyau
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - V Labanca
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - A Drake
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - S De Angelis
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - A Rubod
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - J Frei
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - L N Caro
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - S Blein
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - E Martini
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - M Chimen
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - T Matthes
- Haematology Service, Department of Oncology and Clinical Pathology Service, Department of Diagnostics, University Hospital Geneva, 1211, Geneva, Switzerland
| | - Z Kaya
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Institute, University of Oxford, Oxford, UK
| | - C M Edwards
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Institute, University of Oxford, Oxford, UK
| | - J R Edwards
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Institute, University of Oxford, Oxford, UK
| | - E Menoret
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
| | - C Kervoelen
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
| | - C Pellat-Deceunynck
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
- SIRIC ILIAD, Angers, Nantes, France
| | - P Moreau
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
- SIRIC ILIAD, Angers, Nantes, France
- Service d'Hématologie Clinique, Unité d'Investigation Clinique, CHU, Nantes, France
| | - M L Mbow
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - A Srivastava
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - M R Dyson
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - E A Zhukovsky
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - M Perro
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland.
| | - S Sammicheli
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland.
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3
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Rao S, Verrill C, Cerundolo L, Alham NK, Kaya Z, O'Hanlon M, Hayes A, Lambert A, James M, Tullis IDC, Niederer J, Lovell S, Omer A, Lopez F, Leslie T, Buffa F, Bryant RJ, Lamb AD, Vojnovic B, Wedge DC, Mills IG, Woodcock DJ, Tomlinson I, Hamdy FC. Intra-prostatic tumour evolution, steps in metastatic spread and histogenomic associations revealed by integration of multi-region whole-genome sequencing with histopathological features. Genome Med 2024; 16:35. [PMID: 38374116 PMCID: PMC10877771 DOI: 10.1186/s13073-024-01302-x] [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: 07/19/2023] [Accepted: 02/06/2024] [Indexed: 02/21/2024] Open
Abstract
BACKGROUND Extension of prostate cancer beyond the primary site by local invasion or nodal metastasis is associated with poor prognosis. Despite significant research on tumour evolution in prostate cancer metastasis, the emergence and evolution of cancer clones at this early stage of expansion and spread are poorly understood. We aimed to delineate the routes of evolution and cancer spread within the prostate and to seminal vesicles and lymph nodes, linking these to histological features that are used in diagnostic risk stratification. METHODS We performed whole-genome sequencing on 42 prostate cancer samples from the prostate, seminal vesicles and lymph nodes of five treatment-naive patients with locally advanced disease. We spatially mapped the clonal composition of cancer across the prostate and the routes of spread of cancer cells within the prostate and to seminal vesicles and lymph nodes in each individual by analysing a total of > 19,000 copy number corrected single nucleotide variants. RESULTS In each patient, we identified sample locations corresponding to the earliest part of the malignancy. In patient 10, we mapped the spread of cancer from the apex of the prostate to the seminal vesicles and identified specific genomic changes associated with the transformation of adenocarcinoma to amphicrine morphology during this spread. Furthermore, we show that the lymph node metastases in this patient arose from specific cancer clones found at the base of the prostate and the seminal vesicles. In patient 15, we observed increased mutational burden, altered mutational signatures and histological changes associated with whole genome duplication. In all patients in whom histological heterogeneity was observed (4/5), we found that the distinct morphologies were located on separate branches of their respective evolutionary trees. CONCLUSIONS Our results link histological transformation with specific genomic alterations and phylogenetic branching. These findings have implications for diagnosis and risk stratification, in addition to providing a rationale for further studies to characterise the genetic changes causally linked to morphological transformation. Our study demonstrates the value of integrating multi-region sequencing with histopathological data to understand tumour evolution and identify mechanisms of prostate cancer spread.
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Affiliation(s)
- Srinivasa Rao
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK.
- Botnar Research Centre, Windmill Road, Oxford, OX3 7LD, UK.
| | - Clare Verrill
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Lucia Cerundolo
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | | | - Zeynep Kaya
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Miriam O'Hanlon
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Alicia Hayes
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Adam Lambert
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Martha James
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | | | - Jane Niederer
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Shelagh Lovell
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Altan Omer
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Francisco Lopez
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Tom Leslie
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | | | - Richard J Bryant
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Alastair D Lamb
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Boris Vojnovic
- Department of Oncology, University of Oxford, Oxford, UK
| | - David C Wedge
- Manchester Cancer Research Centre, University of Manchester, Manchester, UK
| | - Ian G Mills
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Dan J Woodcock
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Ian Tomlinson
- Department of Oncology, University of Oxford, Oxford, UK
| | - Freddie C Hamdy
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
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4
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Kaya Z, Belder N, Sever-Bahcekapili M, Donmez-Demir B, Erdener ŞE, Bozbeyoglu N, Bagci C, Eren-Kocak E, Yemisci M, Karatas H, Erdemli E, Gursel I, Dalkara T. Vesicular HMGB1 release from neurons stressed with spreading depolarization enables confined inflammatory signaling to astrocytes. J Neuroinflammation 2023; 20:295. [PMID: 38082296 PMCID: PMC10712196 DOI: 10.1186/s12974-023-02977-6] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 11/28/2023] [Indexed: 12/18/2023] Open
Abstract
The role of high mobility group box 1 (HMGB1) in inflammation is well characterized in the immune system and in response to tissue injury. More recently, HMGB1 was also shown to initiate an "inflammatory signaling cascade" in the brain parenchyma after a mild and brief disturbance, such as cortical spreading depolarization (CSD), leading to headache. Despite substantial evidence implying a role for inflammatory signaling in prevalent neuropsychiatric disorders such as migraine and depression, how HMGB1 is released from healthy neurons and how inflammatory signaling is initiated in the absence of apparent cell injury are not well characterized. We triggered a single cortical spreading depolarization by optogenetic stimulation or pinprick in naïve Swiss albino or transgenic Thy1-ChR2-YFP and hGFAP-GFP adult mice. We evaluated HMGB1 release in brain tissue sections prepared from these mice by immunofluorescent labeling and immunoelectron microscopy. EzColocalization and Costes thresholding algorithms were used to assess the colocalization of small extracellular vesicles (sEVs) carrying HMGB1 with astrocyte or microglia processes. sEVs were also isolated from the brain after CSD, and neuron-derived sEVs were captured by CD171 (L1CAM). sEVs were characterized with flow cytometry, scanning electron microscopy, nanoparticle tracking analysis, and Western blotting. We found that HMGB1 is released mainly within sEVs from the soma of stressed neurons, which are taken up by surrounding astrocyte processes. This creates conditions for selective communication between neurons and astrocytes bypassing microglia, as evidenced by activation of the proinflammatory transcription factor NF-ĸB p65 in astrocytes but not in microglia. Transmission immunoelectron microscopy data illustrated that HMGB1 was incorporated into sEVs through endosomal mechanisms. In conclusion, proinflammatory mediators released within sEVs can induce cell-specific inflammatory signaling in the brain without activating transmembrane receptors on other cells and causing overt inflammation.
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Affiliation(s)
- Zeynep Kaya
- Institute of Neurological Sciences and Psychiatry, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Nevin Belder
- Institute of Neurological Sciences and Psychiatry, Hacettepe University, Sıhhiye, Ankara, Turkey
- Biotechnology Institute, Ankara University, Ankara, Turkey
| | - Melike Sever-Bahcekapili
- Institute of Neurological Sciences and Psychiatry, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Buket Donmez-Demir
- Institute of Neurological Sciences and Psychiatry, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Şefik Evren Erdener
- Institute of Neurological Sciences and Psychiatry, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Naz Bozbeyoglu
- Department of Molecular Biology and Genetics, Science Faculty, Bilkent University, Ankara, Turkey
| | - Canan Bagci
- Institute of Neurological Sciences and Psychiatry, Hacettepe University, Sıhhiye, Ankara, Turkey
- Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences, Bahçeşehir University, Istanbul, Turkey
| | - Emine Eren-Kocak
- Institute of Neurological Sciences and Psychiatry, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Muge Yemisci
- Institute of Neurological Sciences and Psychiatry, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Hulya Karatas
- Institute of Neurological Sciences and Psychiatry, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Esra Erdemli
- Department of Histology and Embryology, Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Ihsan Gursel
- Department of Molecular Biology and Genetics, Science Faculty, Bilkent University, Ankara, Turkey
- Izmir Biomedicine and Genome Center, Dokuz Eylul University, İzmir, Turkey
| | - Turgay Dalkara
- Institute of Neurological Sciences and Psychiatry, Hacettepe University, Sıhhiye, Ankara, Turkey.
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5
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Mazzitelli JA, Pulous FE, Smyth LCD, Kaya Z, Rustenhoven J, Moskowitz MA, Kipnis J, Nahrendorf M. Skull bone marrow channels as immune gateways to the central nervous system. Nat Neurosci 2023; 26:2052-2062. [PMID: 37996526 PMCID: PMC10894464 DOI: 10.1038/s41593-023-01487-1] [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: 11/16/2022] [Accepted: 10/10/2023] [Indexed: 11/25/2023]
Abstract
Decades of research have characterized diverse immune cells surveilling the CNS. More recently, the discovery of osseous channels (so-called 'skull channels') connecting the meninges with the skull and vertebral bone marrow has revealed a new layer of complexity in our understanding of neuroimmune interactions. Here we discuss our current understanding of skull and vertebral bone marrow anatomy, its contribution of leukocytes to the meninges, and its surveillance of the CNS. We explore the role of this hematopoietic output on CNS health, focusing on the supply of immune cells during health and disease.
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Affiliation(s)
- Jose A Mazzitelli
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
- Center for Brain Immunology and Glia (BIG), Washington University School of Medicine, St. Louis, MO, USA
- Medical Scientist Training Program, Washington University School of Medicine, St. Louis, MO, USA
- Neuroscience Graduate Program, Washington University School of Medicine, St. Louis, MO, USA
| | - Fadi E Pulous
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Leon C D Smyth
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
- Center for Brain Immunology and Glia (BIG), Washington University School of Medicine, St. Louis, MO, USA
| | - Zeynep Kaya
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Justin Rustenhoven
- Department of Pharmacology and Clinical Pharmacology, The University of Auckland, Auckland, New Zealand
| | - Michael A Moskowitz
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Jonathan Kipnis
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA.
- Center for Brain Immunology and Glia (BIG), Washington University School of Medicine, St. Louis, MO, USA.
- Medical Scientist Training Program, Washington University School of Medicine, St. Louis, MO, USA.
- Neuroscience Graduate Program, Washington University School of Medicine, St. Louis, MO, USA.
| | - Matthias Nahrendorf
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
- Cardiovascular Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
- Department of Internal Medicine I, University Hospital Wuerzburg, Wuerzburg, Germany.
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Pouleau B, Estoppey C, Suere P, Nallet E, Laurendon A, Monney T, Pais Ferreira D, Drake A, Carretero-Iglesia L, Macoin J, Berret J, Pihlgren M, Doucey MA, Gudi GS, Menon V, Udupa V, Maiti A, Borthakur G, Srivastava A, Blein S, Mbow ML, Matthes T, Kaya Z, Edwards CM, Edwards JR, Menoret E, Kervoëlen C, Pellat-Deceunynck C, Moreau P, Zhukovsky E, Perro M, Chimen M. Preclinical characterization of ISB 1342, a CD38 × CD3 T-cell engager for relapsed/refractory multiple myeloma. Blood 2023; 142:260-273. [PMID: 37192303 PMCID: PMC10644056 DOI: 10.1182/blood.2022019451] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 04/06/2023] [Accepted: 05/01/2023] [Indexed: 05/18/2023] Open
Abstract
Although treatment of multiple myeloma (MM) with daratumumab significantly extends the patient's lifespan, resistance to therapy is inevitable. ISB 1342 was designed to target MM cells from patients with relapsed/refractory MM (r/r MM) displaying lower sensitivity to daratumumab. ISB 1342 is a bispecific antibody with a high-affinity Fab binding to CD38 on tumor cells on a different epitope than daratumumab and a detuned scFv domain affinity binding to CD3ε on T cells, to mitigate the risk of life-threatening cytokine release syndrome, using the Bispecific Engagement by Antibodies based on the TCR (BEAT) platform. In vitro, ISB 1342 efficiently killed cell lines with different levels of CD38, including those with a lower sensitivity to daratumumab. In a killing assay where multiple modes of action were enabled, ISB 1342 showed higher cytotoxicity toward MM cells compared with daratumumab. This activity was retained when used in sequential or concomitant combinations with daratumumab. The efficacy of ISB 1342 was maintained in daratumumab-treated bone marrow patient samples showing lower sensitivity to daratumumab. ISB 1342 induced complete tumor control in 2 therapeutic mouse models, unlike daratumumab. Finally, in cynomolgus monkeys, ISB 1342 displayed an acceptable toxicology profile. These data suggest that ISB 1342 may be an option in patients with r/r MM refractory to prior anti-CD38 bivalent monoclonal antibody therapies. It is currently being developed in a phase 1 clinical study.
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Affiliation(s)
- Blandine Pouleau
- Department of Oncology, Ichnos Sciences SA, Epalinges, Switzerland
| | - Carole Estoppey
- Department of Antibody Engineering, Ichnos Sciences SA, Epalinges, Switzerland
| | - Perrine Suere
- Department of Oncology, Ichnos Sciences SA, Epalinges, Switzerland
| | - Emilie Nallet
- Department of Oncology, Ichnos Sciences SA, Epalinges, Switzerland
| | - Amélie Laurendon
- Department of Antibody Engineering, Ichnos Sciences SA, Epalinges, Switzerland
| | - Thierry Monney
- Department of Antibody Engineering, Ichnos Sciences SA, Epalinges, Switzerland
| | | | - Adam Drake
- Department of Oncology, Ichnos Sciences SA, Epalinges, Switzerland
| | | | - Julie Macoin
- Department of Oncology, Ichnos Sciences SA, Epalinges, Switzerland
| | - Jérémy Berret
- Department of Oncology, Ichnos Sciences SA, Epalinges, Switzerland
| | - Maria Pihlgren
- Department of Oncology, Ichnos Sciences SA, Epalinges, Switzerland
| | | | - Girish S. Gudi
- Department of Pharmacokinetics and Translational Sciences, Ichnos Sciences Inc, New York, NY
| | - Vinu Menon
- Department of Pharmacokinetics and Translational Sciences, Ichnos Sciences Inc, New York, NY
| | - Venkatesha Udupa
- Department of Toxicology, Glenmark Pharmaceuticals Limited, Mumbai, India
| | - Abhishek Maiti
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Gautam Borthakur
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Ankita Srivastava
- Department of Antibody Engineering, Ichnos Sciences SA, Epalinges, Switzerland
| | - Stanislas Blein
- Department of Antibody Engineering, Ichnos Sciences SA, Epalinges, Switzerland
| | - M. Lamine Mbow
- Department of Oncology, Ichnos Sciences SA, Epalinges, Switzerland
| | - Thomas Matthes
- Hematology Service, Department of Oncology and Clinical Pathology Service, Department of Diagnostics, University Hospital Geneva, Geneva, Switzerland
| | - Zeynep Kaya
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Institute, University of Oxford, Oxford, United Kingdom
| | - Claire M. Edwards
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Institute, University of Oxford, Oxford, United Kingdom
| | - James R. Edwards
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Institute, University of Oxford, Oxford, United Kingdom
| | - Emmanuelle Menoret
- Nantes Université, INSERM, Centre national de la recherche scientifique, Université d'Angers, Nantes, France
- Therassay Core Facility, Department of Onco-Hematology, Capacités, Nantes Université, Nantes, France
| | - Charlotte Kervoëlen
- Nantes Université, INSERM, Centre national de la recherche scientifique, Université d'Angers, Nantes, France
- Therassay Core Facility, Department of Onco-Hematology, Capacités, Nantes Université, Nantes, France
| | - Catherine Pellat-Deceunynck
- Nantes Université, INSERM, Centre national de la recherche scientifique, Université d'Angers, Nantes, France
- SIRIC ILIAD, Angers, Nantes, France
| | - Philippe Moreau
- Nantes Université, INSERM, Centre national de la recherche scientifique, Université d'Angers, Nantes, France
- SIRIC ILIAD, Angers, Nantes, France
- Service d'Hématologie Clinique, Unité d'Investigation Clinique, CHU Nantes, Nantes, France
| | - Eugene Zhukovsky
- Department of Oncology, Ichnos Sciences SA, Epalinges, Switzerland
| | - Mario Perro
- Department of Oncology, Ichnos Sciences SA, Epalinges, Switzerland
| | - Myriam Chimen
- Department of Oncology, Ichnos Sciences SA, Epalinges, Switzerland
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7
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Pihlgren M, Carretero L, Berret J, Hall O, Estoppey C, Drake A, Pais D, Macoin J, Chimen M, Suere P, Nallet E, Pouleau B, Stainnack E, Loyau J, Monney T, Delachat A, Dreyfus C, Blein S, Kaya Z, Matthes T, Croasdale-wood R, Edwards J, Edwards C, Mbow L, Dyson M, Konto C, Srivastava A, Zhukovshy E, Perro M. Abstract 2970: Overcoming mechanisms of escape from treatments for multiple myeloma with ISB 2001, a potential first-in-class trispecific BCMA and CD38 targeted T cell engager. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-2970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
Immune therapies targeting a single tumor associated antigen (TAA) have demonstrated their efficacy against multiple myeloma (MM) in recent years. However, durable responses are still limited, which may be due to downregulation of the targeted TAA or expansion of clones with low target expression . To improve binding to tumor cells and enhance tumor cell killing, we propose to simultaneously target BCMA and CD38 using ISB 2001, a potential first-in-class TREAT™ trispecific CD3 T-cell engager based on Ichnos’ proprietary BEAT platform. To understand whether dual targeting could improve binding to tumors and enhance killing, we compared ISB 2001 to control molecules lacking one of the two TAA binders. Potency of ISB 2001 was greater than control molecules lacking either BCMA or CD38 used alone or in combination in a re-directed lysis assay on multiple myeloma cells These results were consistent with the binding to tumor cell lines, in which ISB 2001 showed higher maximal binding than control molecules lacking either CD38 or BCMA binding domains. We also compared the tumor killing potency of ISB 2001 to teclistamab, a BCMAxCD3 bispecific antibody recently approved to treat relapsed/refractory (RR) MM patients who have received prior lines of treatment. To mimic the heterogeneity of tumor cells, the killing of MM cell lines expressing varying levels of BCMA and CD38 was evaluated. ISB 2001 exhibited potent killing of the cell lines with EC50 ranging from 0.2 to 1.5 pM, which was statistically superior to that of teclistamab. These results were consistent with elevated binding of ISB 2001 to MM cells compared to teclistamab. In the presence of soluble BCMA or APRIL, ISB 2001 was 100-fold more potent than teclistamab. When evaluated in a therapeutic PBMC-humanized mouse model subcutaneously engrafted with BCMAlow/CD38low KMS-12-BM cells, ISB 2001 resulted in complete tumor regression and showed statistically higher potency than teclistamab at 0.1 mg/kg dose. In addition, ISB 2001 showed more potent anti-tumor activity than teclistamab in bone marrow aspirates of MM patients, indicating that ISB 2001 to leverage its cytotoxic properties with available immune cells. Taken together, we show that there is a clear advantage of avid binding achieved by the dual targeting using a TREAT-based ISB 2001, which results in potent and efficacious killing of tumor cells in vitro and in vivo. These data support clinical development of ISB 2001 as a promising treatment of RRMM through co-targeting of BCMA and CD38. Significant benefit is anticipated for RRMM patients who may experience tumor escape through target downregulation mechanisms. The evaluation of ISB2001 in a phase 1 clinical trial is planned for the first half of 2023.
Citation Format: Maria Pihlgren, Laura Carretero, Jeremy Berret, Olivia Hall, Carole Estoppey, Adam Drake, Daniela Pais, Julie Macoin, Myriam Chimen, Perrine Suere, Emily Nallet, Blandine Pouleau, Elodie Stainnack, Jeremy Loyau, Thierry Monney, Aurore Delachat, Cyrille Dreyfus, Stan Blein, Zeynep Kaya, Thomas Matthes, Rebecca Croasdale-wood, James Edwards, Claire Edwards, Lamine Mbow, Michael Dyson, Cyril Konto, Ankita Srivastava, Eugene Zhukovshy, Mario Perro. Overcoming mechanisms of escape from treatments for multiple myeloma with ISB 2001, a potential first-in-class trispecific BCMA and CD38 targeted T cell engager [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 2970.
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Affiliation(s)
- Maria Pihlgren
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | | | - Jeremy Berret
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | - Olivia Hall
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | | | - Adam Drake
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | - Daniela Pais
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | - Julie Macoin
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | - Myriam Chimen
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | - Perrine Suere
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | - Emily Nallet
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | | | | | - Jeremy Loyau
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | - Thierry Monney
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | | | | | - Stan Blein
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | | | - Thomas Matthes
- 3Ichnos Sciences Biotherapeutics SA, Geneve, Switzerland
| | | | | | | | - Lamine Mbow
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | - Michael Dyson
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | - Cyril Konto
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
| | | | | | - Mario Perro
- 1Ichnos Sciences Biotherapeutics SA, Epalinges, Switzerland
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Kurt Z, Işık Ş, Kaya Z, Anagün Y, Koca N, Çiçek S. Evaluation of EfficientNet models for COVID-19 detection using lung parenchyma. Neural Comput Appl 2023; 35:12121-12132. [PMID: 36843903 PMCID: PMC9940669 DOI: 10.1007/s00521-023-08344-z] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 01/25/2023] [Indexed: 02/23/2023]
Abstract
When the COVID-19 pandemic broke out in the beginning of 2020, it became crucial to enhance early diagnosis with efficient means to reduce dangers and future spread of the viruses as soon as possible. Finding effective treatments and lowering mortality rates is now more important than ever. Scanning with a computer tomography (CT) scanner is a helpful method for detecting COVID-19 in this regard. The present paper, as such, is an attempt to contribute to this process by generating an open-source, CT-based image dataset. This dataset contains the CT scans of lung parenchyma regions of 180 COVID-19-positive and 86 COVID-19-negative patients taken at the Bursa Yuksek Ihtisas Training and Research Hospital. The experimental studies show that the modified EfficientNet-ap-nish method uses this dataset effectively for diagnostic purposes. Firstly, a smart segmentation mechanism based on the k-means algorithm is applied to this dataset as a preprocessing stage. Then, performance pretrained models are analyzed using different CNN architectures and with our Nish activation function. The statistical rates are obtained by the various EfficientNet models and the highest detection score is obtained with the EfficientNet-B4-ap-nish version, which provides a 97.93% accuracy rate and a 97.33% F1-score. The implications of the proposed method are immense both for present-day applications and future developments.
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Affiliation(s)
- Zuhal Kurt
- Department of Computer Engineering, Atilim University, Ankara, Turkey
| | - Şahin Işık
- Department of Computer Engineering, Eskisehir Osmangazi University Meselik Campus, Eskisehir, Turkey
| | - Zeynep Kaya
- Department of Electrical and Energy, Bilecik Seyh Edebali University, Osmaneli Vocational School, Bilecik, Turkey
| | - Yıldıray Anagün
- Department of Computer Engineering, Eskisehir Osmangazi University Meselik Campus, Eskisehir, Turkey
| | - Nizameddin Koca
- Department of Internal Medicine, University of Health Sciences, Bursa Yuksek Ihtisas Training and Research Hospital, Bursa, Turkey
| | - Sümeyye Çiçek
- Department of Internal Medicine, University of Health Sciences, Bursa Yuksek Ihtisas Training and Research Hospital, Bursa, Turkey
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Kaya Z, Yurtseven S. Effects of feeding systems on yield and performance of Linda geese (Anserinae sp.) in hot climatic conditions. S AFR J ANIM SCI 2022. [DOI: 10.4314/sajas.v51i5.9] [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: 11/17/2022]
Abstract
This study evaluated the effects of various types of feeding on fattening period and performance of Linda geese. Feeding patterns consisted of concentrate feed-based intensive and pasture feed-based semi-intensive. A total of 150 goslings aged three days were divided into two groups, each consisting of three replications. All groups were given rations containing 23% crude protein and 3100 kcal/kg ME in weeks 0–6, and rations containing 20% crude protein 3100 kcal/kg ME between weeks 7 and 17. After the seventh week, the feed for the semi-intensive group was diluted with 20% barley and from the tenth week, this group started to graze on pasture. Live weight gain of the two groups was similar, although geese kept indoors consumed more concentrate. Feed protein digestion of geese was similar in the two feeding types. Digestion-related visceral weight in the pasture-supplemented group increased, whereas carcass weight decreased. Growth curves were used to estimate the age of Linda geese to the end of the fattening period. The average slaughter age was the fourth and fifth months, as indicated by Von Bertalanffy, Logistic, and Gompertz growth models, which used the data from the third week. Concentrate feeding enabled Linda geese to reach earlier higher slaughter weight, although it was not considered economical. Although averages of bodyweight gain over the trial appeared slightly better in the concentrate-based intensive group, the results revealed that concentrate feed supplement and pasture may be the best and most economical form of feeding for Linda geese.
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Whitburn J, Rao SR, Morris EV, Tabata S, Hirayama A, Soga T, Edwards JR, Kaya Z, Palmer C, Hamdy FC, Edwards CM. Metabolic profiling of prostate cancer in skeletal microenvironments identifies G6PD as a key mediator of growth and survival. Sci Adv 2022; 8:eabf9096. [PMID: 35213227 PMCID: PMC8880772 DOI: 10.1126/sciadv.abf9096] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The spread of cancer to bone is invariably fatal, with complex cross-talk between tumor cells and the bone microenvironment responsible for driving disease progression. By combining in silico analysis of patient datasets with metabolomic profiling of prostate cancer cells cultured with bone cells, we demonstrate the changing energy requirements of prostate cancer cells in the bone microenvironment, identifying the pentose phosphate pathway (PPP) as elevated in prostate cancer bone metastasis, with increased expression of the PPP rate-limiting enzyme glucose-6-phosphate dehydrogenase (G6PD) associated with a reduction in progression-free survival. Genetic and pharmacologic manipulation demonstrates that G6PD inhibition reduces prostate cancer growth and migration, associated with changes in cellular redox state and increased chemosensitivity. Genetic blockade of G6PD in vivo results in reduction of tumor growth within bone. In summary, we demonstrate the metabolic plasticity of prostate cancer cells in the bone microenvironment, identifying the PPP and G6PD as metabolic targets for the treatment of prostate cancer bone metastasis.
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Affiliation(s)
- Jessica Whitburn
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Srinivasa R. Rao
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Emma V. Morris
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Sho Tabata
- Institute for Advanced Biosciences, Keio University, Yamagata, Japan
| | - Akiyoshi Hirayama
- Institute for Advanced Biosciences, Keio University, Yamagata, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Yamagata, Japan
| | - James R. Edwards
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Zeynep Kaya
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Charlotte Palmer
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Freddie C. Hamdy
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - Claire M. Edwards
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
- Corresponding author.
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11
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Cakir-Aktas C, Erdener SE, Teke B, Bozdag Pehlivan S, Zeybek ND, Taskiran-Sag A, Kaya Z, Dalkara T, Mut M. Confocal reflectance microscopy for metal and lipid nanoparticle visualization in the brain. Nanomedicine (Lond) 2022; 17:447-460. [PMID: 35142565 DOI: 10.2217/nnm-2021-0350] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background: A requirement for nanoparticle (NP) research is visualization of particles within cells and tissues. Limitations of electron microscopy and low yields of NP fluorescent tagging warrant the identification of alternative imaging techniques. Method: Confocal reflectance microscopy (CRM) in combination with fluorescence imaging was assessed for visualizing rhodamine B-conjugated silver and fluorescein isothiocyanate-conjugated lipid core-stearylamine NP uptake in vitro and in vivo. Results: CRM successfully identified cellular uptake and blood-brain barrier penetration of NPs owing to their distinguishing refractive indices. NP-dependent reflectance signals in vitro were dose and incubation time dependent. Finally, CRM facilitated the distinction between nonspecific fluorescence signals and NPs. Conclusion: These findings demonstrate the value of CRM for NP visualization in tissues, which can be performed with a standard confocal microscope.
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Affiliation(s)
- Canan Cakir-Aktas
- Hacettepe University, Institute of Neurological Sciences & Psychiatry, Ankara, 06230, Turkey
| | - Sefik Evren Erdener
- Hacettepe University, Institute of Neurological Sciences & Psychiatry, Ankara, 06230, Turkey
| | - Büşra Teke
- Department of Pharmaceutical Technology, Hacettepe University, Faculty of Pharmacy, Ankara, 06230, Turkey
| | - Sibel Bozdag Pehlivan
- Department of Pharmaceutical Technology, Hacettepe University, Faculty of Pharmacy, Ankara, 06230, Turkey
| | - Naciye Dilara Zeybek
- Department of Histology & Embryology, Hacettepe University, Faculty of Medicine, Ankara, 06230, Turkey
| | - Aslihan Taskiran-Sag
- Hacettepe University, Institute of Neurological Sciences & Psychiatry, Ankara, 06230, Turkey
| | - Zeynep Kaya
- Hacettepe University, Institute of Neurological Sciences & Psychiatry, Ankara, 06230, Turkey
| | - Turgay Dalkara
- Hacettepe University, Institute of Neurological Sciences & Psychiatry, Ankara, 06230, Turkey
| | - Melike Mut
- Hacettepe University, Institute of Neurological Sciences & Psychiatry, Ankara, 06230, Turkey.,Department of Neurosurgery, Hacettepe University, Faculty of Medicine, Ankara, 06230, Turkey
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Erdener ŞE, Kaya Z, Dalkara T. Parenchymal neuroinflammatory signaling and dural neurogenic inflammation in migraine. J Headache Pain 2021; 22:138. [PMID: 34794382 PMCID: PMC8600694 DOI: 10.1186/s10194-021-01353-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [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] [Received: 10/03/2021] [Accepted: 11/05/2021] [Indexed: 12/12/2022] Open
Abstract
Background Pain is generally concomitant with an inflammatory reaction at the site where the nociceptive fibers are activated. Rodent studies suggest that a sterile meningeal inflammatory signaling cascade may play a role in migraine headache as well. Experimental studies also suggest that a parenchymal inflammatory signaling cascade may report the non-homeostatic conditions in brain to the meninges to induce headache. However, how these signaling mechanisms function in patients is unclear and debated. Our aim is to discuss the role of inflammatory signaling in migraine pathophysiology in light of recent developments. Body Rodent studies suggest that a sterile meningeal inflammatory reaction can be initiated by release of peptides from active trigeminocervical C-fibers and stimulation of resident macrophages and dendritic/mast cells. This inflammatory reaction might be needed for sustained stimulation and sensitization of meningeal nociceptors after initial activation along with ganglionic and central mechanisms. Most migraines likely have cerebral origin as suggested by prodromal neurologic symptoms. Based on rodent studies, a parenchymal inflammatory signaling cascade has been proposed as a potential mechanism linking cortical spreading depolarization (CSD) to meningeal nociception. A recent PET/MRI study using a sensitive inflammation marker showed the presence of meningeal inflammatory activity in migraine with aura patients over the occipital cortex generating the visual aura. These studies also suggest the presence of a parenchymal inflammatory activity, supporting the experimental findings. In rodents, parenchymal inflammatory signaling has also been shown to be activated by migraine triggers such as sleep deprivation without requiring a CSD because of the resultant transcriptional changes, predisposing to inadequate synaptic energy supply during intense excitatory transmission. Thus, it may be hypothesized that neuronal stress created by either CSD or synaptic activity-energy mismatch could both initiate a parenchymal inflammatory signaling cascade, propagating to the meninges, where it is converted to a lasting headache with or without aura. Conclusion Experimental studies in animals and emerging imaging findings from patients warrant further research to gain deeper insight to the complex role of inflammatory signaling in headache generation in migraine.
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Affiliation(s)
- Şefik Evren Erdener
- Institute of Neurological Sciences and Psychiatry, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Zeynep Kaya
- Institute of Neurological Sciences and Psychiatry, Hacettepe University, Sıhhiye, Ankara, Turkey
| | - Turgay Dalkara
- Institute of Neurological Sciences and Psychiatry, and Faculty of Medicine, Hacettepe University, Ankara, Turkey.
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Özgün F, Kaya Z, Morova T, Geverts B, Abraham TE, Houtsmuller AB, van Royen ME, Lack NA. DNA binding alters ARv7 dimer interactions. J Cell Sci 2021; 134:jcs258332. [PMID: 34318896 DOI: 10.1242/jcs.258332] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 06/02/2021] [Indexed: 11/20/2022] Open
Abstract
Androgen receptor (AR) splice variants are proposed to be a potential driver of lethal castration-resistant prostate cancer. AR splice variant 7 (ARv7) is the most commonly observed isoform and strongly correlates with resistance to second-generation anti-androgens. Despite this clinical evidence, the interplay between ARv7 and the highly expressed full-length AR (ARfl) remains unclear. In this work, we show that ARfl/ARv7 heterodimers readily form in the nucleus via an intermolecular N/C interaction that brings the four termini of the proteins in close proximity. Combining fluorescence resonance energy transfer and fluorescence recovery after photobleaching, we demonstrate that these heterodimers undergo conformational changes following DNA binding, indicating dynamic nuclear receptor interaction. Although transcriptionally active, ARv7 can only form short-term interactions with DNA at highly accessible high-occupancy ARfl binding sites. Dimerization with ARfl does not affect ARv7 binding dynamics, suggesting that DNA binding occupancy is determined by the individual protein monomers and not the homodimer or heterodimer complex. Overall, these biophysical studies reveal detailed properties of ARv7 dynamics as both a homodimer or heterodimer with ARfl.
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Affiliation(s)
- Fatma Özgün
- School of Medicine, Koç University, Istanbul 34450, Turkey
| | - Zeynep Kaya
- School of Medicine, Koç University, Istanbul 34450, Turkey
| | - Tunç Morova
- Vancouver Prostate Centre, Department of Urologic Sciences, University of British Columbia, Vancouver, BC V6H 3Z6, Canada
| | - Bart Geverts
- Erasmus Optical Imaging Centre, Erasmus University Medical Center, 3015 GE Rotterdam, The Netherlands
| | - Tsion E Abraham
- Erasmus Optical Imaging Centre, Erasmus University Medical Center, 3015 GE Rotterdam, The Netherlands
| | - Adriaan B Houtsmuller
- Erasmus Optical Imaging Centre, Erasmus University Medical Center, 3015 GE Rotterdam, The Netherlands
- Department of Pathology, Erasmus University Medical Center, 3015 GE Rotterdam, The Netherlands
| | - Martin E van Royen
- Erasmus Optical Imaging Centre, Erasmus University Medical Center, 3015 GE Rotterdam, The Netherlands
- Department of Pathology, Erasmus University Medical Center, 3015 GE Rotterdam, The Netherlands
| | - Nathan A Lack
- School of Medicine, Koç University, Istanbul 34450, Turkey
- Vancouver Prostate Centre, Department of Urologic Sciences, University of British Columbia, Vancouver, BC V6H 3Z6, Canada
- Koç University Research Centre for Translational Medicine (KUTTAM), Koç University, Istanbul 34450, Turkey
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14
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Sen Tunc E, Aksoy E, Arslan HN, Kaya Z. Evaluation of parents' knowledge, attitudes, and practices regarding self-medication for their children's dental problems during the COVID-19 pandemic: a cross-sectional survey. BMC Oral Health 2021; 21:98. [PMID: 33673839 PMCID: PMC7934979 DOI: 10.1186/s12903-021-01466-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/26/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Self-medication refers to taking medicine without consultation with a doctor or dentist, and it is an important health issue, especially during the COVID-19 pandemic. There are no data about parents' SM practices for their children's dental problems during the COVID-19 pandemic. The present study aims to evaluate parents' knowledge, attitudes, and practices regarding self-medication for their children's dental problems during the COVID-19 pandemic in Northern Turkey. METHODS A cross-sectional survey was carried out in the pediatric dental clinic at Ondokuz Mayis University, Faculty of Dentistry, Department of Pediatric Dentistry, immediately after the COVID-19 lockdown ended. A total of 389 parents who agreed to participate in the study completed the questionnaire from July 1 to October 1. A questionnaire with 18 items was designed to collect information on the parents' knowledge and attitudes regarding when, why, and how to use drugs and on their practices on medicating their children. The collected data were analyzed using descriptive and analytical statistics (chi-square test). RESULTS The majority of parents (n = 273; 70.2%) practiced self-medication for their children's dental problems. Self-medication with a previously prescribed medications was usually preferred by parents (n = 179; 62.2%). Analgesics (98%) were the most commonly used medicines by parents in their self-medication for their children's dental problems. CONCLUSION Prevalence of self-medication practices for children's dental problems is high in Turkey during the COVID-19 pandemic. Therefore, new healthcare services, such as teledentistry, may be useful to overcome problems related to the self-medication of children during times when the ability to reach healthcare providers is limited, such as during pandemics.
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Affiliation(s)
- Emine Sen Tunc
- Department of Pediatric Dentistry, Faculty of Dentistry, Ondokuz Mayis University, 55270, Samsun, Turkey
| | - Emre Aksoy
- Department of Pediatric Dentistry, Faculty of Dentistry, Ondokuz Mayis University, 55270, Samsun, Turkey.
| | - Hatice Nilden Arslan
- Department of Public Health, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Zeynep Kaya
- Department of Pediatric Dentistry, Faculty of Dentistry, Ondokuz Mayis University, 55270, Samsun, Turkey
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Kecel-Gunduz S, Budama-Kilinc Y, Cakir-Koc R, Zorlu T, Bicak B, Kokcu Y, Kaya Z, Ozel AE, Akyuz S. In silico Analysis of Sulpiride, Synthesis, Characterization and In vitro Studies of its Nanoparticle for the Treatment of Schizophrenia. Curr Comput Aided Drug Des 2020; 16:104-121. [PMID: 31244443 DOI: 10.2174/1573409915666190627125643] [Citation(s) in RCA: 4] [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: 01/22/2019] [Revised: 04/01/2019] [Accepted: 05/18/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Sulpiride, which has selective dopaminergic blocking activity, is a substituted benzamide antipsychotic drug playing a prominent role in the treatment of schizophrenia, which more selective and primarily blocks dopamine D2 and D3 receptor. OBJECTIVE This study has two main objectives, firstly; the molecular modeling studies (MD and Docking, ADME) were conducted to define the molecular profile of sulpiride and sulpiridereceptor interactions, another to synthesize polymeric nanoparticles with chitosan, having the advantage of slow/controlled drug release, to improve drug solubility and stability, to enhance utility and reduce toxicity. METHODS Molecular dynamic simulation was carried out to determine the conformational change and stability (in water) of the drug and the binding profile of D3 dopamine receptor was determined by molecular docking calculations. The pharmacological properties of the drug were revealed by ADME analysis. The ionic gelation method was used to prepare sulpiride loaded chitosan nanoparticles (CS NPs). The Dynamic Light Scattering (DLS), UV-vis absorption (UV), Scanning Electron Microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy techniques were carried out to characterize the nanoparticles. In vitro cell cytotoxicity experiments examined with MTT assay on mouse fibroblast (L929), human neuroblastoma (SH-SY5Y) and glioblastoma cells (U-87). The statistical evaluations were produced by ANOVA. RESULTS The residues (ASP-119, PHE-417) of D3 receptor provided a stable docking with the drug, and the important pharmacological values (blood brain barrier, Caco-2 permeability and human oral absorption) were also determined. The average particle size, PdI and zeta potential value of sulpiride- loaded chitosan NPs having a spherical morphology were calculated as 96.93 nm, 0.202 and +7.91 mV. The NPs with 92.8% encapsulation and 28% loading efficiency were found as a slow release profile with 38.49% at the end of the 10th day. Due to the formation of encapsulation, the prominent shifted wave numbers for C-O, S-O, S-N stretching, S-N-H bending of Sulpiride were also identified. Mitochondrial activity of U87, SHSY-5Y and L929 cell line were assayed and evaluated using the SPSS program. CONCLUSION To provide more efficient use of Sulpiride having a low bioavailability of the gastrointestinal tract, the nanoparticle formulation with high solubility and bioavailability was designed and synthesized for the first time in this study for the treatment of schizophrenia. In addition to all pharmacological properties of drug, the dopamine blocking activity was also revealed. The toxic effect on different cell lines have also been interpreted.
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Affiliation(s)
- Serda Kecel-Gunduz
- Department of Physics, Faculty of Science, University of Istanbul, 34134 Istanbul, Turkey
| | - Yasemin Budama-Kilinc
- Department of Bioengineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, 34220, Istanbul, Turkey
| | - Rabia Cakir-Koc
- Department of Bioengineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, 34220, Istanbul, Turkey
| | - Tolga Zorlu
- Graduate School of Natural and Applied Science, Yildiz Technical University, 34220, Istanbul, Turkey.,Department of Physical Chemistry, Biomedical Research Center (CINBIO), Universidade de Vigo, 36310 Vigo, Spain
| | - Bilge Bicak
- Department of Physics, Faculty of Science, University of Istanbul, 34134 Istanbul, Turkey.,Institute of Graduate Studies in Sciences, University of Istanbul, 34452, Istanbul, Turkey
| | - Yagmur Kokcu
- Institute of Graduate Studies in Sciences, University of Istanbul, 34452, Istanbul, Turkey
| | - Zeynep Kaya
- Graduate School of Natural and Applied Science, Yildiz Technical University, 34220, Istanbul, Turkey
| | - Aysen E Ozel
- Department of Physics, Faculty of Science, University of Istanbul, 34134 Istanbul, Turkey
| | - Sevim Akyuz
- Department of Physics, Science and Letters Faculty, Istanbul Kultur University, Atakoy Campus, Bakirkoy 34156, Istanbul, Turkey
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Abstract
Are the grid cells discovered in rodents relevant to human cognition? Following up on two seminal studies by others, we aimed to check whether an approximate 6-fold, grid-like symmetry shows up in the cortical activity of humans who "navigate" between vowels, given that vowel space can be approximated with a continuous trapezoidal 2D manifold, spanned by the first and second formant frequencies. We created 30 vowel trajectories in the assumedly flat central portion of the trapezoid. Each of these trajectories had a duration of 240 milliseconds, with a steady start and end point on the perimeter of a "wheel". We hypothesized that if the neural representation of this "box" is similar to that of rodent grid units, there should be an at least partial hexagonal (6-fold) symmetry in the EEG response of participants who navigate it. We have not found any dominant n-fold symmetry, however, but instead, using PCAs, we find indications that the vowel representation may reflect phonetic features, as positioned on the vowel manifold. The suggestion, therefore, is that vowels are encoded in relation to their salient sensory-perceptual variables, and are not assigned to arbitrary grid-like abstract maps. Finally, we explored the relationship between the first PCA eigenvector and putative vowel attractors for native Italian speakers, who served as the subjects in our study.
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Affiliation(s)
- Zeynep Kaya
- SISSA–Cognitive Neuroscience, via Bonomea 265, 34136 Trieste, Italy
| | | | - Alessandro Treves
- SISSA–Cognitive Neuroscience, via Bonomea 265, 34136 Trieste, Italy
- NTNU–Centre for Neural Computation, Trondheim, Norway
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Gorgisen G, Ozkol H, Tuluce Y, Arslan A, Ecer Y, Keskin S, Kaya Z, Ragbetli MC. Silibinin and ellagic acid increase the expression of insulin receptor substrate 1 protein in ultraviolet irradiated rat skin. Biotech Histochem 2020; 95:641-646. [PMID: 32347127 DOI: 10.1080/10520295.2020.1753238] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 10/24/2022] Open
Abstract
Daily exposure to ultraviolet (UV) light induces inflammation and tumorigenesis in the skin. Silibinin and ellagic acid are natural products that exhibit anti-inflammatory and anti-tumorigenic properties. Insulin receptor substrate protein 1 (IRS1) is important for skin homeostasis and physiology, but its activity following UV radiation remains unclear. We investigated the effects of ellagic acid and silibinin on IRS1 expression in ultraviolet A (UVA) and ultraviolet B (UVB) irradiated rat skin. Forty-two female Wistar rats were divided randomly into six groups of seven animals. The dorsal skin of rats was exposed to UVA + UVB, then treated with ellagic acid and silibinin by gavage. IRS1 expression in skin tissues was determined by western blot analysis. IRS1 expression increased significantly following treatment with ellagic acid and silibinin in UVA + UVB irradiated skin compared to the UVA + UVB only group. After UVA + UVB treatment, ellagic acid effected greater induction of IRS1 expression than silibinin. Our findings suggest that the photoprotective roles of ellagic acid and silibinin may be due to induction of IRS1 expression in UVA + UVB treated rat skin.
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Affiliation(s)
- G Gorgisen
- Department of Medical Biology, Van Yuzuncu Yil University Medical School , Van, Turkey
| | - H Ozkol
- Department of Medical Biology, Van Yuzuncu Yil University Medical School , Van, Turkey
| | - Y Tuluce
- Department of Medical Biology, Van Yuzuncu Yil University Medical School , Van, Turkey
| | - A Arslan
- Department of Medical Biology, Van Yuzuncu Yil University Medical School , Van, Turkey
| | - Y Ecer
- Department of Medical Biology, Van Yuzuncu Yil University Medical School , Van, Turkey
| | - S Keskin
- Department of Medical Histology and Embryology, Van Yuzuncu Yil University Medical School , Van, Turkey
| | - Z Kaya
- Department of Medical Biology, Van Yuzuncu Yil University Medical School , Van, Turkey
| | - M C Ragbetli
- Department of Medical Histology and Embryology, Van Yuzuncu Yil University Medical School , Van, Turkey
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18
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Poller W, Klaassen S, Haas J, Kaya Z, Mochmann HC, Gast M, Escher F, Kayvanpour E, Berger F, Monserrat L, Klingel K, Meder B, Landmesser U. P3688Familial recurrent autoimmune myocarditis associated with a truncating nonsense mutation of the desmoplakin gene. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Arrhythmogenic cardiomyopathy (AC) is an important cause of ventricular arrhythmias in children and young adults. AC is associated with mutation of desmosomal proteins, however, cardiac disease penetrance is incomplete and the clinical course varies widely without recognizable exogenous or epi/genetic co-factors. Importantly, DSP mutation carriers may also display entirely non-cardiac e.g. dermatological phenotypes.
Methods and results
In two brothers with recurrent fulminant myocarditis, mutation screening of 218 cardiomyopathy-related genes identified a truncating mutation Arg1458* of desmoplakin (DSP). DSP immunhistology unexpectedly revealed complete loss (“knockout”) of DSP protein in endomyocardial biopsies (EMBs), but none of the histological anomalies of AC. Criteria for histological diagnosis of myocarditis were not either fulfilled, and cardiac MRI revealed no features associated with AC. Screening for infections was negative, there was no substance abuse, medication or vaccination. Possible disease triggers were competitive sport events. Myosin and troponin I autoantibodies were detected at titers up to 1:320.
We used allele-specific RT-PCR to distinguish if the patients' allele classified as “normal” was actually defective due to promotor mutation or epigenetic silencing. RT-PCRs were done on EMBs and peripheral blood mononuclear cells (PBMCs). In a cohort of dilated cardiomyopathy (DCM) patients we were able to detect DSP transcripts in both, PBMC and left-ventricular heart tissue. RNA sequencing of human PBMC subpopulations suggested that DSP transcription may be restricted to certain immune cell subtypes. RT-PCRs revealed that both Arg1458* carriers have a functional second DSP allele, indicating that their “DSP knockout” occurs at the protein level and may be due to protein instability and degradation within desmosomes.
We screened additional existing cohorts for such variants and identified stopgain variant Gln307Ter in a 37-yrs-old woman with ARVC. This patient's sister died from heart failure at the age of 39. In a 59-yrs-old female LVNC patient, stopgain variant Y1391X was identified. Here, family history was unclear, her brother probably died from coronary artery disease. In a 71-yrs-old female DCM patient with no family history, stopgain variant Tyr1512Ter was identified.
Conclusions
The described patients with DSP truncations strongly suggest the existence of additional genetic or exogenous modifiers driving pathogenesis either way. DSP defects may cause recurrent myocarditis, and mutation screening is advisable to enable early detection of high-risk patients with similar phenotypes. Our finding of complete myocardial DSP protein loss emphasizes that DNA sequencing may miss critical molecular disturbances. It is indispensable to also analyze transcriptome and protein level in the tissue actually affected in a patient in order to recognize his/her individual pathogenesis.
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Affiliation(s)
- W Poller
- Charite - Campus Benjamin Franklin, Berlin, Germany
| | - S Klaassen
- Charite University Hospital, Pediatric Cardiology, Berlin, Germany
| | - J Haas
- University Hospital of Heidelberg, Cardiology, Heidelberg, Germany
| | - Z Kaya
- University Hospital of Heidelberg, Cardiology, Heidelberg, Germany
| | | | - M Gast
- Charite - Campus Benjamin Franklin, Berlin, Germany
| | - F Escher
- Charité - Universitätsmedizin Berlin, Cardiology, Berlin, Germany
| | - E Kayvanpour
- University Hospital of Heidelberg, Cardiology, Heidelberg, Germany
| | - F Berger
- Charite University Hospital, Pediatric Cardiology, Berlin, Germany
| | - L Monserrat
- Instituto Universitario de Ciencias de la Salud, Health in Code, A Coruna, Spain
| | - K Klingel
- University Hospital, Pathology, Tübingen, Germany
| | - B Meder
- University Hospital of Heidelberg, Cardiology, Heidelberg, Germany
| | - U Landmesser
- Charite - Campus Benjamin Franklin, Berlin, Germany
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19
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Bekoz H, Kaya Z, Mert A. PB2038 EVOLUATION OF CLINICAL MANIFESTATION IN FEBRILE NEUTROPENIC PATIENTS. Hemasphere 2019. [DOI: 10.1097/01.hs9.0000566640.25148.6d] [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] Open
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20
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Bozkaya Y, Albayrak I, Tucer D, Kaya Z, Usta U. Late-Onset Lung Metastasis in Rectum Cancer Can Be Confused with Primary Lung Cancer; a Case Report and Literature Review. J Gastrointest Cancer 2019; 50:1029-1033. [PMID: 30613927 DOI: 10.1007/s12029-018-00190-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Y Bozkaya
- Clinic of Medical Oncology, Edirne State Hospital, 22030, Edirne, Turkey.
| | - I Albayrak
- Clinic of Thoracic Surgery, Edirne State Hospital, Edirne, Turkey
| | - D Tucer
- Clinic of Gastroenterology, Edirne State Hospital, Edirne, Turkey
| | - Z Kaya
- Clinic of Radiology, Edirne State Hospital, Edirne, Turkey
| | - U Usta
- Department of Pathology, Trakya University Faculty of Medicine, Edirne, Turkey
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21
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Budama-Kilinc Y, Cakir-Koc R, Ozdemir B, Kaya Z, Badur S. Production and characterization of a conserved M2e peptide-based specific IgY antibody: evaluation of the diagnostic potential via conjugation with latex nanoparticles. Prep Biochem Biotechnol 2018; 48:930-939. [PMID: 30388960 DOI: 10.1080/10826068.2018.1525564] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Antibodies play an important role in combating and controlling viral diseases such as influenza. Immunoglobulin Y (IgY) antibodies have several advantages such as a less invasive manufacturing process, ease of isolation, higher affinity compared with IgG antibodies, and cost-effectiveness. To date, although specific IgY production has been performed for different strains of influenza A, to the best of our knowledge, an IgY against the M2e peptide has not been produced. In the current study, IgY antibodies are produced, purified, and characterized using the M2e peptide sequence for the first time with the intent to apply them for the diagnosis of influenza A virus. Anti-M2e IgY antibodies are obtained from eggs using a two-step purification method. The activity and characterization of the antibodies are determined using an enzyme-linked immunosorbent assay, a nano-spectrophotometer, an SDS-Page assay, and a Western Blot analysis. Finally, anti-M2e IgY antibodies are conjugated to the latex nanoparticles, and the reaction between the influenza A virus and the nanoparticles is demonstrated using light microscopy, transmission electron microscopy, and energy dispersive X-ray spectroscopy. In conclusion, this study shows that anti-M2e IgY antibodies can contribute to the diagnosis, treatment, and prevention of the influenza A virus.
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Affiliation(s)
| | - Rabia Cakir-Koc
- a Bioengineering Department , Yildiz Technical University , Istanbul , Turkey
| | - Burak Ozdemir
- b Graduate School of Natural and Applied Sciences , Yildiz Technical University , Istanbul , Turkey
| | - Zeynep Kaya
- b Graduate School of Natural and Applied Sciences , Yildiz Technical University , Istanbul , Turkey
| | - Selim Badur
- c GlaxoSmithKline-Vaccine , Istanbul , Turkey
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22
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Kaya Z. Recombinant FVIIa therapy for heavy menstrual bleeding in patients with severe FV deficiency. Haemophilia 2018; 24:e269-e270. [PMID: 29944193 DOI: 10.1111/hae.13538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/07/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Z Kaya
- Department of Pediatrics, Unit of Pediatric Hematology, Gazi University Medical Faculty, Ankara, Turkey
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23
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Fischer A, Stroikova V, Bockstahler M, Mueller AM, Hill PP, Oettl R, Mueller O, Katus HA, Kaya Z. P317Tight regulation of RANKL through OPG in the development of inflammatory cardiomyopathy. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Fischer
- University Hospital of Heidelberg, Cardiology Department, Heidelberg, Germany
| | - V Stroikova
- University Hospital of Heidelberg, Cardiology Department, Heidelberg, Germany
| | - M Bockstahler
- University Hospital of Heidelberg, Cardiology Department, Heidelberg, Germany
| | - A M Mueller
- University Hospital of Heidelberg, Cardiology Department, Heidelberg, Germany
| | - P P Hill
- University Hospital of Heidelberg, Cardiology Department, Heidelberg, Germany
| | - R Oettl
- University Hospital of Heidelberg, Cardiology Department, Heidelberg, Germany
| | - O Mueller
- University Medical Center of Schleswig-Holstein, Department of Internal Medicine III, Kiel, Germany
| | - H A Katus
- University Hospital of Heidelberg, Cardiology Department, Heidelberg, Germany
| | - Z Kaya
- University Hospital of Heidelberg, Cardiology Department, Heidelberg, Germany
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24
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Kaya Z, Ozmen ÖE, Alici N, Topuz B, Akgül M, Akkuzu E, Akdemir Ö, Buyan N, Göral S. Successful treatment of renal infiltration complicated by atypical hemolytic uremic syndrome in a leukemic child. Indian J Nephrol 2018; 28:401-403. [PMID: 30271006 PMCID: PMC6146737 DOI: 10.4103/ijn.ijn_211_17] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Renal infiltration in children with acute leukemia has been reported previously; however, it has rarely been described in association with atypical hemolytic uremic syndrome (aHUS). We present a case of 9-year-old boy who developed life-threatening aHUS in the 1st week of Burkitt leukemia/lymphoma diagnosis with renal infiltration. Complete resolution of aHUS was achieved after therapeutic plasma exchange. This is an uncommon complication of Burkitt leukemia/lymphoma in a pediatric case.
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25
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Budama Kilinc Y, Cakir Koc R, Kaya Z. Preparation and Cytotoxicity of Coriandrum Sativum L. Oil Loaded Chitosan Nanoparticles. Journal of the Turkish Chemical Society, Section A: Chemistry 2017. [DOI: 10.18596/jotcsa.323798] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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26
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Bockstahler M, Fischer A, Salbach C, Goetzke C, Mueller A, Oettl R, Katus H, Beling A, Kaya Z. P2571Genetic ablation of the immunoproteasome subunits LMP2 and LMP7 protects from cardiac troponin I induced autoimmune myocarditis. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2571] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Salbach C, Bockstahler M, Fischer A, Goetzke C, Mueller A, Oettl R, Katus H, Beling A, Kaya Z. P3518ISG15-dependent susceptibility to troponin I induced autoimmune myocarditis. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3518] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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28
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Özgün F, Kaya Z, Bayraktar H, Manioğlu S, Özturan D, Lack N. Abstract 3522: Structural characterization of androgen receptor variant 7 in prostate cancer. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-3522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Prostate cancer is an extremely common disease that affects one in every seven men in their lifetime. The standard care for late-stage cancer is designed to inhibit the activation of androgen receptor (AR). While this therapeutic approach is initially efficient, the cancer almost always develops resistance and gives rise to castration-resistant prostate cancer (CRPC). When therapy fails, the median survival of patients who suffer from CRPC is 12-16 months. It is critical to understand the mechanism of CRPC better to ameliorate the outcome of late-stage prostate cancer patients.
AR is a transcription factor that consists of an N-terminal domain (NTD), a DNA binding domain (DBD) and a ligand binding domain (LBD). Upon activation by androgen, an intramolecular interaction between NTD and LBD occurs. The AR translocates into the nucleus where it forms a homodimer. It binds to the promoter and enhancer elements of the AR target genes and triggers gene transcription. It has been demonstrated in many clinical studies that AR is important for the progression of prostate cancer including CRPC. In CRPC, although androgen production and binding is inhibited, how the AR can still be activated is a fundamental question to be answered. One of the several different mechanisms proposed is the alternative splicing of the AR generating truncated AR variants that lack LBD. These variants do not require androgens to be activated and they are intrinsically resistant to clinically approved therapeutics.
Despite the fact that the AR variants have been shown to be critical in late-stage prostate cancer, the mechanism of gene transcription initiation by the AR variants is not well-known. We propose to characterize the mechanism of the AR variant activation. Since ARV7 is the most commonly observed variant, we utilize ARV7. We develop a FRET based methodology to identify how ARV7 dimers form and to test if full-length AR is necessary for transcriptional activation mediated by ARV7. We are able to demonstrate possible intermolecular interaction between the full length AR and ARV7 measuring the FRET intensity between the fluorophores attached to the N and C terminus of two proteins. FRET measurements are analyzed by tracking single cells and recording the FRET intensities during the process. Our preliminary data suggest that the full-length AR and ARV7 may interact in the presence of androgen. ARV7 is always localized in the nucleus whereas the AR requires androgen to be activated and translocates into the nucleus. Being in close proximity, putative interaction between the AR and ARV7 occurs in the nucleus. Additionally, we use NTD and DBD point mutants to determine critical positions of intermolecular interaction between them.
Supporting the significance of ARV7 in prostate cancer, our results clarify the dimerization process. It gives an opportunity to test clinical drugs currently in development to effectively inhibit ARV7 activation.
Citation Format: Fatma Özgün, Zeynep Kaya, Halil Bayraktar, Selen Manioğlu, Doğancan Özturan, Nathan Lack. Structural characterization of androgen receptor variant 7 in prostate cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 3522. doi:10.1158/1538-7445.AM2017-3522
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Affiliation(s)
- Fatma Özgün
- 1Koç University School of Medicine, Istanbul, Turkey
| | - Zeynep Kaya
- 1Koç University School of Medicine, Istanbul, Turkey
| | | | - Selen Manioğlu
- 2Koç University Department of Chemistry, Istanbul, Turkey
| | | | - Nathan Lack
- 1Koç University School of Medicine, Istanbul, Turkey
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29
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Sechet D, Kaya Z, Phan TA, Jouffroy M, Bentouhami E, Armspach D, Matt D, Toupet L. Aza-capped cyclodextrins for intra-cavity metal complexation. Chem Commun (Camb) 2017; 53:11717-11720. [DOI: 10.1039/c7cc06434a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
N,N-Chelators based on aza-capped cyclodextrins were designed to produce complexes with an encapsulated metal unit.
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Affiliation(s)
- D. Sechet
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse
- Institut de Chimie de Strasbourg
- UMR 7177 CNRS
- Université de Strasbourg
- 67081 Strasbourg cedex
| | - Z. Kaya
- Equipe Confinement Moléculaire et Catalyse
- Institut de Chimie de Strasbourg
- UMR 7177 CNRS
- Université de Strasbourg
- 67081 Strasbourg Cedex
| | - T.-A. Phan
- Equipe Confinement Moléculaire et Catalyse
- Institut de Chimie de Strasbourg
- UMR 7177 CNRS
- Université de Strasbourg
- 67081 Strasbourg Cedex
| | - M. Jouffroy
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse
- Institut de Chimie de Strasbourg
- UMR 7177 CNRS
- Université de Strasbourg
- 67081 Strasbourg cedex
| | | | - D. Armspach
- Equipe Confinement Moléculaire et Catalyse
- Institut de Chimie de Strasbourg
- UMR 7177 CNRS
- Université de Strasbourg
- 67081 Strasbourg Cedex
| | - D. Matt
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse
- Institut de Chimie de Strasbourg
- UMR 7177 CNRS
- Université de Strasbourg
- 67081 Strasbourg cedex
| | - L. Toupet
- Institut de Physique de Rennes UMR 6251 CNRS
- 35042 Rennes cedex
- France
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30
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Rosenthal VD, Al-Abdely HM, El-Kholy AA, AlKhawaja SAA, Leblebicioglu H, Mehta Y, Rai V, Hung NV, Kanj SS, Salama MF, Salgado-Yepez E, Elahi N, Morfin Otero R, Apisarnthanarak A, De Carvalho BM, Ider BE, Fisher D, Buenaflor MCS, Petrov MM, Quesada-Mora AM, Zand F, Gurskis V, Anguseva T, Ikram A, Aguilar de Moros D, Duszynska W, Mejia N, Horhat FG, Belskiy V, Mioljevic V, Di Silvestre G, Furova K, Ramos-Ortiz GY, Gamar Elanbya MO, Satari HI, Gupta U, Dendane T, Raka L, Guanche-Garcell H, Hu B, Padgett D, Jayatilleke K, Ben Jaballah N, Apostolopoulou E, Prudencio Leon WE, Sepulveda-Chavez A, Telechea HM, Trotter A, Alvarez-Moreno C, Kushner-Davalos L, Desse J, Maurizi D, Montanini A, Chaparro G, Stagnaro J, Romani A, Bianchi A, Álvarez G, Palaoro A, Bernan M, Cabrera-Montesino R, Domínguez C, Rodríguez C, Silva C, Bogdanowicz E, Riera F, Benchetrit G, Perez I, Vimercati J, Marcos L, Ramasco L, Caridi M, Oyola M, Rodríguez M, Spadaro M, Olivieri M, Saul P, Juarez P, Pérez R, Botta P, Quintana D, Ríos A, Stagnaro J, Chediack V, Chilon W, Alsayegh AI, Yaseen FH, Hani LF, Sowar SF, Magray TA, Medeiros E, Alves De Oliveira A, Romario-Mendes A, Fernandes-Valente C, Santos C, Escudeiro D, Azevedo-Ferreira Lima D, Azevedo-Pereira D, Onzi-Siliprandi E, Serpa-Maia F, Aguiar-Leitao F, Assuncao-Ponte G, Dos Anjos-Lima J, Olszewski J, Harten Pinto Coelho K, Alves De Lima L, Mendonca M, Maciel-Canuto Amaral M, Tenorio M, Gerah S, Andrade-Oliveira-Reis M, Moreira M, Ximenes-Rocha Batista M, Campos-Uchoa R, Rocha-Vasconcelos Carneiro R, Amaral De Moraes R, Do Nascimento S, Moreira-Matos T, Lima-De Barros Araujo T, De Jesus Pinheiro-Bandeira T, Machado-Silva V, Santos Monteiro W, Hristozova E, Kostadinov E, Angelova K, Velinova V, Dicheva V, Guo X, Ye G, Li R, Song L, Liu K, Liu T, Song G, Wang C, Yang X, Yu H, Yang Y, Martínez A, Vargas-García A, Lagares-Guzmán A, González A, Linares C, Ávila-Acosta C, Santofimio D, Yepes-Gomez D, Marin-Tobar D, Mazo-Elorza D, Chapeta-Parada E, Camacho-Moreno G, Roncancio-Vill G, Valderrama-Marquez I, Ruiz-Gallardo J, Ospina-Martínez J, Osorio J, Marín-Uribe J, López J, Gualtero S, Rojas J, Gomez-Nieto K, Rincon L, Meneses-Ovallos L, Canas-Giraldo L, Burgos-Florez L, Amaral-Almeida Costa M, Rodriguez M, Barahona-Guzmán N, Mancera-Paez O, Rios-Arana P, Ortega R, Romero-Torres S, Pulido-Leon S, Valderrama S, Moreno-Mejia V, Raigoza-Martinez W, Villamil-Gomez W, Pardo-Lopez Y, Argüello-Ruiz A, Solano-Chinchilla A, Muñoz-Gutierrez G, Calvo-Hernández I, Maroto-Vargas L, Zuniga M, Valverde-Hernandez M, Chavarria-Ugalde O, Herrera B, Díaz C, Bovera M, Cevallos C, Pelaez C, Jara E, Delgado V, Coello-Gordon E, Picoita F, Guerrero-Toapant F, Valencia F, Santacruz G, Gonzalez H, Pazmino L, Garcia M, Arboleda M, Lascano M, Alquinga N, Ramírez V, Yousef RH, Moustafa AEM, Ahmed A, Elansary A, Ali AM, Hasanin A, Messih AA, Ramadan A, El Awady B, Hassan D, Abd El Aziz D, Hamza H, Agha HM, Ghazi IA, ElKholy J, Fattah MA, Elanany M, Mansour M, Haleim M, Fouda R, El-Sherif RH, Bekeit S, Bayani V, Elkholy Y, Abdelhamid Y, Salah Z, Rivera D, Chawla A, Manked A, Azim A, Mubarak A, Thakur A, Dharan A, Patil A, Sasidharan A, Bilolikar AK, Anirban Karmakar A, Mathew A, Kulkarni A, Agarwal A, Sriram A, Dwivedy A, Dasgupta A, Bhakta A, Suganya AR, Poojary A, Mani AK, Sakle A, Abraham BK, Padmini B, Ramachandran B, Ray B, Pati BK, Chaudhury BN, Mishra BM, Biswas S, Saibala MB, Jawadwala BQ, Rodrigues C, Modi C, Patel C, Khanna D, Devaprasad D, Divekar D, Aggarwal DG, Divatia J, Zala D, Pathrose E, Abubakar F, Chacko F, Gehlot G, Khanna G, Sale H, Roy I, Shelgaonkar J, Sorabjee J, Eappen J, Mathew J, Pal J, Varma K, Joshi KL, Sandhu K, Kelkar R, Ranganathan L, Pushparaj L, Lavate M, Latha M, Suryawanshi M, Bhattacharyya M, Kavathekar M, Agarwal MK, Patel M, Shah M, Sivakumar M, Kharbanda M, Bej M, Potdar M, Chakravarthy M, Karpagam M, Myatra S, Gita N, Rao N, Sen N, Ramakrishnan N, Jaggi N, Saini N, Pawar N, Modi N, Pandya N, Mohanty N, Thakkar P, Joshi P, Sahoo PK, Nair PK, Kumar PS, Patil P, Mukherjee P, Mathur P, Shah P, Sukanya R, Arjun R, Chawla R, Gopalakrishnan R, Venkataraman R, Raut S, Krupanandan R, Tejam R, Misra R, Debroy R, Saranya S, Narayanan S, Mishra S, Saseedharan S, Sengupta S, Patnaik S, Sinha S, Blessymole S, Rohra S, Rajagopal S, Mukherjee S, Sengupta S, John S, Bhattacharya S, Sijo, Bhattacharyya S, Singh S, Sohanlal T, Vadi S, Dalal S, Todi S, Kumar S, Kansal S, Misra S, Bhattacharyya S, Nirkhiwale S, Purkayastha SK, Mukherjee S, Singh S, Sahu S, Sharma S, Kumar S, Basu S, Shetty S, Shah S, Singhal T, Francis T, Anand T, Venkateshwar V, Thomas V, Kothari V, Velupandi, Kantroo V, Sitohang G, Kadarsih R, Sanaei A, Maghsudi B, Sabetian G, Masjedi M, Alebouyeh M, Sherafat SJ, Mohamed YK, Al Khamis A, Alsaadi AS, Al-Jarie AA, Mutwalli AH, Rillorta A, Thomas A, Kelany A, Manao A, Alamri DM, Santiago E, Cruzpero E, Sawan FA, Al Qasmah FA, Alabdaly H, Al-Dossary HA, Ahmed H, Roshdi H, Al-Alkami HY, Hanafi H, Ammari HE, Hani HMA, Asiri IAA, Mendoza JA, Philipose J, Selga JO, Kehkashan, Ghalilah KM, Redito LS, Josph L, Al-Alawi M, Al-Gethamy MM, Madco M, Manuel M, Girvan M, Aldalaton M, De Guzman M, Alkhamaly M, Masfar M, Karrar MAA, Al Azmi MM, Quisai ML, Torres MM, Al-Abdullah N, Tawfic NA, Elsayed N, Abdulkhalik NS, Bugis NA, Ariola NC, Gad N, Alghosn N, Tashkandi N, Zharani NA, De Vera P, Krishnan R, Al Shehri RH, Jaha RNA, Thomas R, Cresencia RL, Penuliar R, Lozada R, Al Qahtani S, Twfik S, Al Faraj SH, El-Sherbiny S, Alih SJB, Briones S, Bukhari SZ, Alotaibi TSA, Gopal U, Nair U, Abdulatif WA, Hussain WM, Demotica WM, Spahija G, Baftiu N, Gashi A, Omar AA, Mohamed A, Rebello F, Almousa HH, Abdo NM, George S, Khamis S, Thomas S, Ahmad Zaatari A, Anwar Al Souheil A, Ayash H, Zeid I, Tannous J, Zahreddine N, Ahmadieh R, Mahfouz T, Kardas T, Tanzi V, Kanafani Z, Hammoud Z, Dagys A, Grinkeviciute D, Kevalas R, Kondratas T, Petrovska M, Popovska K, Mitrev Z, Miteva ZB, Jankovska K, Guroska ST, Gan CS, Othman AA, Yusof AM, Abidin ASZ, Aziz FA, Weng FK, Zainol H, Bakar KBA, Lum LCS, Mansor M, Zaman MK, Jamaluddin MFH, Hasan MS, Rahman RA, Zaini RHM, Zhazali R, Sri Ponnampala SSL, Chuah SL, Shukeri WFWM, Hassan WNW, Yusoff WNW, Mat WRW, Cureno-Diaz M, Aguirre-Avalos G, Flores-Alvarado A, Cerero-Gudino A, Zamores-Pedroza A, Cano-Munoz B, Hernandez-Chena B, Carreon-Martinez C, Coronado-Magana H, Corona-Jimenez F, Rodriguez-Noriega E, Alcala-Martinez E, Gonzalez-Diaz E, Guerra-Infante F, Arteaga-Troncoso G, Martinez-Falcon G, Leon-Garnica G, Delgado-Aguirre H, Perez-Gomez H, Sosa-Gonzalez I, Galindo-Olmeda J, Ayala-Gaytan J, Rodriguez-Pacheco J, Zamorano-Flores L, Lopez-Pulgarin J, Miranda-Novales M, Ramírez M, Lopez-Hurtado M, Lozano M, Gomez M, Sanchez-Castuera M, Kasten-Monges M, Gonzalez-Martinez M, Sanchez-Vargas M, Culebro-Burguet M, Altuzar-Figueroa M, Mijangos-Mendez J, Ramires O, Espinosa O, De Leon-Escobedo R, Salas-Flores R, Ruiz-Rendon R, Petersen-Morfin S, Aguirre-Diaz S, Esparza-Ahumada S, Vega-Gonzalez S, Gaona-Flores V, Monroy-Colin V, Cruz-Rivera Z, Bat-Erdene A, Narankhuu B, Choijamts B, Tuvdennyam B, Batkhuu B, Chuluunchimeg K, Enkhtsetseg D, Batjargal G, Bayasgalan G, Dorj M, Mendsaikhan N, Baatar O, Suvderdene P, Baigalmaa S, Khajidmaa T, Begzjav T, Tsuyanga, Ariyasuren Z, Zeggwagh A, Berechid K, Abidi K, Madani N, Abouqal R, Koirala A, Giri R, Sainju S, Acharya SP, Ahmed A, Raza A, Parveen A, Sultan F, Khan M, Paul N, Daud N, Yusuf S, Nizamuddin S, Garcia-Mayorca E, Castaño E, Moreno-Castillo J, Ballinas-Aquino J, Lara L, Vargas M, Rojas-Bonilla M, Ramos S, Mapp T, De Iturrado V, La Hoz Vergara C, Linares-Calderon C, Moreno D, Ramirez E, Ramírez Wong F, Montenegro-Orrego G, Sandoval-Castillo H, Pichilingue-Chagray J, Mueras-Quevedo J, Aibar-Yaranga K, Castillo-Bravo L, Santivanez-Monge L, Mayorga-Espichan M, Rosario-Tueros M, Changano-Rodriguez M, Salazar-Ramirez N, Marquez-Mondalgo V, Tajanlangit ALN, Tamayo AS, Llames CMJP, Labro E, Dy AP, Fortin J, Bergosa L, Salvio L, Bermudez V, Sg-Buenaflor M, Trajano M, Mendoza M, Javellana O, Maglente R, Arreza-Galapia Y, Navoa-Ng J, Kubler A, Barteczko-Grajek B, Dragan B, Zurawska M, Mikaszewska-Sokolewicz M, Zielinska M, Ramos-Ortiz G, Florin-Rogobete A, Vlad CD, Muntean D, Sandesc D, Papurica M, Licker M, Bedreag OH, Popescu R, Grecu S, Dumitrascu V, Molkov A, Galishevskiy D, Furman M, Simic A, Lekic D, Ristic G, Eremija J, Kojovic J, Nikolic L, Bjelovic M, Lesnakova A, Hlinkova S, Gamar-Elanbya M, Supa N, Prasan P, Pimathai R, Wanitanukool S, Somabutr S, Ben-Jaballah N, Borgi A, Bouziri A, Dilek A, Oncul A, Kaya A, Demiroz AP, Gunduz A, Ozgultekin A, Inan A, Yalcin A, Ramazanoglu A, Engin A, Willke A, Meco BC, Aygun C, Bulut C, Uzun C, Becerik C, Hatipoglu CA, Guclu CY, Ozdemir D, Yildizdas D, Ugurcan D, Azak E, Guclu E, Yilmaz EM, Sebnem-Erdinc F, Sirmatel F, Ulger F, Sari F, Kizilates F, Usluer G, Ceylan G, Ersoz G, Kaya G, Ertem GT, Senol G, Agin H, Cabadak H, Yilmaz H, Sungurtekin H, Zengin H, Turgut H, Ozgunes I, Devrim I, Erdem I, Işcanlı IGE, Bakir MM, Geyik M, Oral M, Meric M, Cengiz M, Ozcelik M, Altindis M, Sunbul M, Elaldi N, Kuyucu N, Unal N, Oztoprak N, Yasar N, Erben N, Bayram N, Dursun O, Karabay O, Coskun O, Horoz OO, Turhan O, Sandal OS, Tekin R, Esen S, Erdogan SY, Unal S, Karacorlu S, Sen S, Sen S, Sacar S, Yarar V, Oruc Y, Sahip Y, Kaya Z, Philip A, Elhoufi A, Alrahma H, Sachez E, Perez F, Empaire G, Vidal H, Montes-Bravo L, Guzman Siritt M, Orozco N, Navarrete N, Ruiz Y, De Anez ZDG, Van Trang DT, Minh DQ, Co DX, Anh DPP, Thu LTA, Tuyet LTD, Nguyet LTT, Chau NU, Binh NG, Tien NP, Anh NQ, Hang PT, Hanh TTM, Hang TTT, Thu TA, Thoa VTH. International Nosocomial Infection Control Consortium report, data summary of 50 countries for 2010-2015: Device-associated module. Am J Infect Control 2016; 44:1495-1504. [PMID: 27742143 DOI: 10.1016/j.ajic.2016.08.007] [Citation(s) in RCA: 217] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Accepted: 08/29/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND We report the results of International Nosocomial Infection Control Consortium (INICC) surveillance study from January 2010-December 2015 in 703 intensive care units (ICUs) in Latin America, Europe, Eastern Mediterranean, Southeast Asia, and Western Pacific. METHODS During the 6-year study period, using Centers for Disease Control and Prevention National Healthcare Safety Network (CDC-NHSN) definitions for device-associated health care-associated infection (DA-HAI), we collected prospective data from 861,284 patients hospitalized in INICC hospital ICUs for an aggregate of 3,506,562 days. RESULTS Although device use in INICC ICUs was similar to that reported from CDC-NHSN ICUs, DA-HAI rates were higher in the INICC ICUs: in the INICC medical-surgical ICUs, the pooled rate of central line-associated bloodstream infection, 4.1 per 1,000 central line-days, was nearly 5-fold higher than the 0.8 per 1,000 central line-days reported from comparable US ICUs, the overall rate of ventilator-associated pneumonia was also higher, 13.1 versus 0.9 per 1,000 ventilator-days, as was the rate of catheter-associated urinary tract infection, 5.07 versus 1.7 per 1,000 catheter-days. From blood cultures samples, frequencies of resistance of Pseudomonas isolates to amikacin (29.87% vs 10%) and to imipenem (44.3% vs 26.1%), and of Klebsiella pneumoniae isolates to ceftazidime (73.2% vs 28.8%) and to imipenem (43.27% vs 12.8%) were also higher in the INICC ICUs compared with CDC-NHSN ICUs. CONCLUSIONS Although DA-HAIs in INICC ICU patients continue to be higher than the rates reported in CDC-NSHN ICUs representing the developed world, we have observed a significant trend toward the reduction of DA-HAI rates in INICC ICUs as shown in each international report. It is INICC's main goal to continue facilitating education, training, and basic and cost-effective tools and resources, such as standardized forms and an online platform, to tackle this problem effectively and systematically.
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Fischer A, Pianca N, Azzimato V, Batchen EJ, Messer AE, Ben Jehuda R, Mueller AM, Bangert A, Bockstahler M, Oettl R, Katus HA, Kaya Z, Prando V, Franzoso M, Di Bona A, Campione M, Sandri M, Zaglia T, Mongillo M, Tabish AM, Buyandelger B, Enesa KN, Hunt J, Milner R, Wiseman JW, Wahlgren J, Bohlooly M, Knoell R, Richardson RV, Thomson AJW, Moran CM, Gray GA, Chapman KE, Papadaki M, Vikhorev PG, Sheehan A, Marston SB, Hallas T, Haykain T, Eisen B, Schick R, Gherghiceanu M, Mandel H, Arad M, Binah O. Moderated Poster Session - Heart245The involvement of TWEAK and FN14 in murine autoimmune myocarditis246Sympathetic neurons that innervate the heart locally modulate cardiomyocyte trophic and electrophysiological properties247W4R variant of CSRP3 leads to the expression of a novel alternate reading frame protein due to alternative splicing248Glucocorticoid intervention prenatally: effects on fetal heart maturation249Uncoupling of myofilament Ca2+-sensitivity from troponin I phosphorylation by hypertrophic and dilated cardiomyopathy mutations can be reversed by EGCG and related Hsp90 inhibitors250Investigating inherited HCM caused by SCO2 and PRKAG2 mutations using the patients' induced pluripotent stem cell-derived cardiomyocytes. Cardiovasc Res 2016. [DOI: 10.1093/cvr/cvw132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kaya Z, Yiğit Ö, Erol M, Bostan Gayret Ö. Evaluation of Parents’ Knowledges and Experiences about Infant Feeding in Children between Six-Twenty Four Months. Haseki 2016. [DOI: 10.4274/haseki.2756] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Kaya Z, Caglayan S, Akkiprik M, Aral C, Ozisik G, Ozata M, Ozer A. Impact of glucocorticoid receptor gene (NR3C1) polymorphisms in Turkish patients with metabolic syndrome. J Endocrinol Invest 2016; 39:557-66. [PMID: 26596278 DOI: 10.1007/s40618-015-0409-1] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 11/01/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND The metabolic syndrome (MetS) is characterized by a cluster of metabolic factors, including insulin resistance and type-2 diabetes, abdominal obesity, dyslipidemia, hypertension and microalbuminuria. Impaired glucocorticoid receptor (GR) activity also plays an important role in the etiology of MetS. The objective of our study is to evaluate the effects of GR gene polymorphisms (BclI, N363S, TthIII1 and ER22/23EK) in Turkish patients with MetS. MATERIALS AND METHODS Seventy subjects with MetS and 185 healthy controls were enrolled in the study. PCR-RFLP analysis was used for genotyping. Results for each polymorphism have been verified by allele-specific oligonucleotide analysis. RESULTS BclI GG genotype was significantly associated with an increased risk of MetS (p = 0.02). Also, only in women, the G allele carriers were significantly associated with higher C-peptide. T allele carriers of TthIII1 polymorphism were significantly associated with higher C-peptide, triglyceride, insulin and C-reactive protein (CRP, p value 0.048, 0.022, 0.005 and 0.022, respectively), and lower fasting blood glucose (FBG, p = 0.02). The combined carriers of BclI polymorphism G allele and TthIII1 polymorphism T allele were significantly associated with higher diastolic blood pressure in all patients, and lower FBG and postprandial blood glucose in only men. All the ER22/23EK polymorphisms coexisted with polymorphic variant of TthIII1 (p = 0.0058). CONCLUSION The presence of homozygote polymorphic variant of BclI might be good predictive markers for the disease susceptibility. The BclI and the TthIII1 polymorphism are associated with sex-specific clinical parameters. Our findings also suggest that the combination of BclI and TthIII1 polymorphisms may play a protective role in blood glucose.
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Affiliation(s)
- Z Kaya
- Department of Medical Biology, School of Medicine, Marmara University, Başıbüyük Mah., Maltepe Başıbüyük Yolu Sok., No: 9/1, Maltepe, 34854, Istanbul, Turkey
- Department of Medical Biology, School of Medicine, Yuzuncu Yıl University, Van, Turkey
| | - S Caglayan
- Division of Endocrinology and Metabolism, Department of Internal Medicine, School of Medicine, İstanbul Medipol University, Istanbul, Turkey
| | - M Akkiprik
- Department of Medical Biology, School of Medicine, Marmara University, Başıbüyük Mah., Maltepe Başıbüyük Yolu Sok., No: 9/1, Maltepe, 34854, Istanbul, Turkey
| | - C Aral
- Department of Molecular Biology, Faculty of Arts and Sciences, Namık Kemal University, Tekirdağ, Turkey
| | - G Ozisik
- Memorial Wellness Endocrinology and Metabolism, Zorlu Center, Zincirlikuyu, Istanbul, Turkey
| | - M Ozata
- Parc 15 Endocrinology and Metabolism Clinic, Altunizade, Istanbul, Turkey
| | - A Ozer
- Department of Medical Biology, School of Medicine, Marmara University, Başıbüyük Mah., Maltepe Başıbüyük Yolu Sok., No: 9/1, Maltepe, 34854, Istanbul, Turkey.
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Aktas S, Turkyilmaz C, Unal S, Ergenekon E, Damar C, Boyunaga O, Sal E, Kaya Z, Ozdemir Y, Bakkaloglu SE. PRENATAL ONSET DISSEMINATED RENAL VEIN THROMBOSIS EXTENDED INTO VENA CAVA IN A LATE PRETERM INFANT. Genet Couns 2015; 26:471-474. [PMID: 26852522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Rosenthal VD, Maki DG, Mehta Y, Leblebicioglu H, Memish ZA, Al-Mousa HH, Balkhy H, Hu B, Alvarez-Moreno C, Medeiros EA, Apisarnthanarak A, Raka L, Cuellar LE, Ahmed A, Navoa-Ng JA, El-Kholy AA, Kanj SS, Bat-Erdene I, Duszynska W, Van Truong N, Pazmino LN, See-Lum LC, Fernández-Hidalgo R, Di-Silvestre G, Zand F, Hlinkova S, Belskiy V, Al-Rahma H, Luque-Torres MT, Bayraktar N, Mitrev Z, Gurskis V, Fisher D, Abu-Khader IB, Berechid K, Rodríguez-Sánchez A, Horhat FG, Requejo-Pino O, Hadjieva N, Ben-Jaballah N, García-Mayorca E, Kushner-Dávalos L, Pasic S, Pedrozo-Ortiz LE, Apostolopoulou E, Mejía N, Gamar-Elanbya MO, Jayatilleke K, de Lourdes-Dueñas M, Aguirre-Avalos G, Maurizi DM, Montanini A, Spadaro ML, Marcos LS, Botta P, Jerez FM, Chavez MC, Ramasco L, Colqui MI, Olivieri MS, Rearte AS, Correa GE, Juarez PD, Gallardo PF, Brito MP, Mendez GH, Valdez JR, Cardena LP, Harystoy JM, Chaparro GJ, Rodriguez CG, Toomey R, Caridi M, Viegas M, Bernan ML, Romani A, Dominguez CB, Davalos LK, Richtmann R, Silva CA, Rodrigues TT, Filho AM, Seerig Palme ED, Besen A, Lazzarini C, Cardoso CB, Azevedo FK, Pinheiro APF, Camacho A, De Carvalho BM, De Assis MJM, Carneiro APV, Canuto MLM, Pinto Coelho KH, Moreira T, Oliveira AA, Sousa Colares MM, De Paula Bessa MM, Gomes Bandeira TDJP, De Moraes RA, Campos DA, De Barros Araújo TML, Freitas Tenório MT, Amorim S, Amaral M, Da Luz Lima J, Pino Da Silva Neta L, Batista C, De Lima Silva FJ, Ferreira De Souza MC, Arruda Guimaraes K, Marcia Maluf Lopes J, Nogueira Napoles KM, Neto Avelar LLS, Vieira LA, Gustavo De Oliveira Cardo L, Takeda CF, Ponte GA, Eduardo Aguiar Leitão F, De Souza Kuchenbecker R, Pires Dos Santos R, Maria Onzi Siliprandi E, Fernando Baqueiro Freitas L, Martins IS, Casi D, Maretti Da Silva MA, Blecher S, Villins M, Salomao R, Oliveira Castro SR, Da Silva Escudero DV, Andrade Oliveira Reis M, Mendonca M, Furlan V, Claudio do Amaral Baruzzi A, Sanchez TE, Moreira M, Vasconcelos de Freitas W, Passos de Souza L, Velinova VA, Hadjieva N, Petrov MM, Karadimov DG, Kostadinov ED, Dicheva VJ, Wang C, Guo X, Geng X, Wang S, Zhang J, Zhu L, Zhuo S, Guo C, Lili T, Ruisheng L, Kun L, Yang X, Yimin L, Pu M, Changan L, Shumei Y, Kangxiong W, Meiyi L, Ye G, Ziqin X, Yao S, Liqiang S, Marino Cañas Giraldo L, Margarita Trujillo Ramirez E, Rios PA, Carlos Torres Millan J, Giovanny Chapeta Parada E, Eduardo Mindiola Rochel A, Corchuelo Martinez AH, Marãa Perez Fernandez A, Guzman NB, Guzman AL, Ferrer MR, Vega YL, Munoz HJ, Moreno GC, Romero Torres SL, Hernandez HT, Valderrama MarquezClaudia Linares IA, Valencia ME, Corrales LS, Bonilla SM, Ivan Marin Uribe J, Gomez DY, Martinez JO, Dary Burgos Florez L, Osorio J, Santofimio D, Cortes LM, Villamil-Gomez W, Gutierrez GM, Ruiz AA, Fuentes CG, Chinchilla AS, Hernandez IC, Ugalde OC, Garcell HG, Perez CM, Bardak S, Ozkan S, Mejia N, Puello Guerrero Glenny Mirabal AM, Delgado M, Severino R, Lacerda E, Tolari G, Bovera MM, Pinto DB, González PF, Santacruz G, Alquinga N, Zaruma C, Remache N, Morocho D, Arboleda M, Zapata MC, Garcia MF, Picoita F, Velez J, Valle M, Yepez ES, Tutillo DM, Mora RA, Padilla AP, Chango M, Cabezas K, Tenorio López S, Lucía Bonilla Escudero A, Sánchez GT, Alberto Gonzalez Flores H, Garcia MF, Ghazi IA, Hassan M, Ismail GA, Hamed R, Abdel-Halim MM, El-Fattah MA, Abdel-Aziz D, Seliem ZS, Elsherif RH, Dewdar RA, Mohmed AA, Abdel-Fatteh Ahmed L, De Jesus Machuca L, Bran De Casares C, Kithreotis P, Daganou M, Veldekis D, Kartsonaki M, Gikas A, Luque Torres MT, Padgett D, Rivera DM, Jaggi N, Rodrigues C, Shah B, Parikh K, Patel J, Thakkar R, Chakravarthy M, Gokul B, Sukanya R, Pushparaj L, Vini T, Rangaswamy S, Patnaik SK, Venkateshwar V, John B, Dalal S, Sahu S, Sahu S, Ray B, Misra S, Mohanty N, Mishra BM, Sahoo P, Parmar N, Mishra S, Pati BK, Singh S, Pati BS, Panda A, Banergee S, Padhihari D, Samal S, Sahu S, Varma K, Suresh Kumar VP, Gopalakrishnan R, Ramakrishnan N, Abraham BK, Rajagopal S, Venkatraman R, Mani AK, Devaprasad D, Ranganathan L, Francis T, Cherain KM, Ramachandran B, Krupanandan R, Muralidharan S, Karpagam M, Padmini B, Saranya S, Kumar S, Pandya N, Kakkar R, Zompa T, Saini N, Samavedam S, Jagathkar G, Nirkhiwale S, Gehlot G, Bhattacharya S, Sood S, Singh S, Singh S, Todi SK, Bhattacharyya M, Bhakta A, Basu S, Agarwal A, Agarwal M, Kharbanda M, Sengupta S, Karmakar A, Gupta D, Sarkar AK, Dey R, Bhattacharya C, Chandy M, Ramanan V, Mahajan A, Roy M, Bhattacharya S, Sinha S, Roy I, Gupta U, Mukherjee S, Bej M, Mukherjee P, Baidya S, Azim A, Sakle AS, Sorabjee JS, Potdar MS, Subhedar VR, Udwadia F, Francis H, Dwivedy A, Binu S, Shetty S, Nair PK, Khanna DK, Chacko F, Blessymole S, Mehta PR, Singhal T, Shah S, Kothari V, Naik R, Patel MH, Aggarwal DG, Jawadwala BQ, Pawar NK, Kardekar SN, Manked AN, Myatra S, Divatia J, Kelkar R, Biswas S, Raut V, Sampat S, Thool A, Karlekar A, Nandwani S, Gupta S, Singhal S, Gupta M, Mathur P, Kumar S, Sandhu K, Dasgupta A, Raha A, Raman P, Wadhera A, Badyal B, Juneja S, Mishra B, Sharma S, Mehrotra M, Shelgaonkar J, Padbidri V, Dhawale R, Sibin SM, Mane D, Sale HK, Mukhit Abdul Gaffar Kazi M, Chabukswar S, Mathew A, Gaikwad D, Harshe A, Nadimpalli G, Bhamare S, Thorat S, Sarda O, Nadimpalli P, Mendonca A, Malik S, Kamble A, Kumari N, Arora S, Munshi N, Divekar DG, Kavathekar MS, Kulkarni AK, Kavathekar MS, Suryawanshi MV, Bommala ML, Bilolikar A, Joshi KL, Pamnani C, Wasan H, Khamkar S, Steephen L, Rajalakshmi A, Thair A, Mubarak A, Sathish S, Kumar S, Sunil H, Sujith S, Dinesh, Sen N, Thool A, Shinde N, Alebouyeh M, Jahani-Sherafat S, Zali MR, Sarbazi MR, Mansouri N, Tajeddin E, Razaghi M, Seyedjavadi S, Tajeddin E, Rashidan M, Razaghi M, Masjedi M, Maghsudi B, Sabetian G, Sanaei A, Yousefipour A, Alebouyeh M, Assiri AM, Furukawa-Cinquini EM, Alshehri AD, Giani AF, Demaisip NL, Cortez EL, Cabato AF, Gonzales Celiz JM, Al-Zaydani Asiri IA, Mohammed YK, Abdullah Al Raey M, Omer Abdul Aziz A, Ali Al Darani S, Aziz MR, Basri RH, Al-Awadi DK, Bukhari SZ, Aromin RG, Ubalde EB, Molano AM, Abdullah Al Enizy H, Baldonado CF, Al Adwani FM, Marie Casuyon Pahilanga A, Tan AM, Joseph S, Nair DS, Al-Abdullah NA, Sindayen G, Malificio AA, Mohammed DA, Mesfer Al Ghamdi H, Silo AC, Valisto MBV, Foteinakis N, Ghazal SS, Joseph MV, Hakawi A, Hasani A, Jusufi I, Spahija G, Baftiu N, Gecaj-Gashi A, Aly NY, El-Dossoky Noweir M, Varghese ST, Ramapurath RJ, Mohamed AM, George SM, Kurian A, Sayed AF, Salama MF, Omar AA, Rebello FM, Narciso DM, Zahreddine NK, Kanafani Z, Kardas T, Molaeb B, Jurdi L, Al Souheil A, Ftouni M, Ayash H, Mahfouz T, Kondratas T, Grinkeviciute D, Kevalas R, Gailiene G, Dagys A, Petrovska M, Popovska K, Bogoevska-Miteva Z, Jankovska K, Guroska ST, Anguseva T, Wan Yusoff WN, Shiham Zainal Abidin A, Gan CS, Zainol H, Rai V, Kwong WK, Hasan MS, Sri La Sri Ponnampala S, Veerakumaran J, Assadian O, Phuong DM, Binh NG, Kaur K, Lim J, Tan LH, Manikavasagam J, Cheong YM, Magaña HC, Cesar Mijangos Méndez J, Jiménez FC, Esparza-Ahumada S, Morfin-Otero R, Rodriguez-Noriega E, Gutierrez-Martinez S, Perez-Gomez HR, León-Garnica G, Mendoza-Mujica C, Cecilia Culebro Burguet M, Portillo-Gallo JH, Almazán FA, Miramontes GI, Olivas MDRV, Aguilar Angel LA, Vargas MS, Orlando Flores Alvarado A, Carlos Mares Morales R, Carlos Fernandez Alvarez L, Armando Rincon Leon H, Navarro Fuentes KR, Mariela Perez Hernandez Y, Falcon GM, Vargas AG, Trujillo Juarez MA, Mulia AM, Alma Ulloa Camacho P, Martinez-Marroquin MY, Garcia MM, Martinez AM, Sanchez EL, Flores GG, Martínez MDRG, Alfonso Galindo Olmeda J, Olivarez G, Rodriguez EB, Magdalena Gutierrez Castillo M, Guadalupe Villa González M, Beatriz Sauceda Castañeda I, Rodriguez JM, Baatar O, Batkhuu B, Meryem K, Amina B, Abouqal R, Zeggwagh AA, Dendane T, Abidi K, Madani N, Mahmood SF, Memon BA, Bhutto GH, Paul N, Parveen A, Raza A, Mahboob A, Nizamuddin S, Sultan F, Nazeer H, Khan AA, Hafeez A, Lara L, Mapp T, Alvarez B, Rojas-Bonilla MI, Castano E, De Moros DA, Atarama RE, Calisto Pazos ME, Paucar A, Ramos MT, Jurado J, Moreno D, Cruz Saldarriaga ME, Ramirez E, La Hoz Vergara CE, Enrique Prudencio Leon W, Isidro Castillo Bravo L, Fernanda Aibar Yaranga K, Pichilingue Chagray JE, Marquez Mondalgo VA, Zegarra ST, Astete NS, Guevara FC, Pastrana JS, Enrique Prudencio Leon W, Linares Calderon CF, Jesus Mayorga Espichan M, Martin Santivanez Monge L, Changano Rodriguez MV, Rosa Diaz Tavera Z, Martin Ramirez Wong F, Chavez SM, Rosa Diaz Tavera Z, Martin Ramirez Wong F, Atencio-Espinoza T, Villanueva VD, Blanco-Abuy MT, Tamayo AS, Bergosa LD, Llames CMJP, Trajano MF, Bunsay SA, Amor JC, Berba R, Sg Buenaflor MC, Labro E, Mendoza MT, Javellana OP, Salvio LG, Rayco RG, Bermudez V, Kubler A, Zielinska M, Kosmider-Zurawska M, Barteczko-Grajek B, Szewczyk E, Dragan B, Mikaszewska-Sokolewicz MA, Lazowski T, Cancel E, Licker MS, Dragomirescu LA, Dumitrascu V, Sandesc D, Bedreag O, Papurica M, Muntean D, Kotkov I, Kretov V, Shalapuda V, Molkov A, Puzanov S, Utkin I, Tchekulaev A, Tulupova V, Nikolic L, Ristic G, Eremija J, Kojovic J, Lekic D, Vasiljevic S, Lesnakova A, Marcekova A, Furova K, Gamar Elanbya MO, Ali MA, Kadankunnel SK, Somabutr S, Pimathai R, Wanitanukool S, Luxsuwong M, Supa N, Prasan P, Thamlikitkul V, Jamulitrat S, Suwalak N, Phainuphong P, Asma B, Aida B, Sarra BH, Ammar K, Ertem GT, Bulut C, Hatipoglu CA, Erdinc FS, Demiroz AP, Ozcelik M, Meco BC, Oral M, Unal N, Guclu CY, Kendirli T, İnce E, Çiftçi E, Yaman A, Ödek Ç, Karbuz A, Kocabaş BA, Altın N, Cesur S, Atasay B, Erdeve O, Akduman H, Kahvecioglu D, Cakir U, Yildiz D, Kilic A, Arsan S, Arman D, Unal S, Gelebek Y, Zengin H, Sen S, Cabadak H, Erbay A, Yalcin AN, Turhan O, Cengiz M, Dursun O, Gunasan P, Kaya S, Ramazanoglu A, Ustun C, Yasayacak A, Akdeniz H, Sirmatel F, Otkun AM, Sacar S, Sener A, Turgut H, Sungurtekin H, Ugurcan D, Necan C, Yilmaz C, Ozdemir D, Geyik MF, Ince N, Danis A, Erdogan SY, Erben N, Usluer G, Ozgunes I, Uzun C, Oncul O, Gorenek L, Erdem H, Baylan O, Ozgultekin A, Inan A, Bolukcu S, Senol G, Ozdemir H, Gokmen Z, Ozdemir SI, Kaya A, Ersoz G, Kuyucu N, Karacorlu S, Kaya Z, Guclu E, Kaya G, Karabay O, Esen S, Aygun C, Ulger F, Dilek A, Yilmaz H, Sunbul M, Engin A, Bakir M, Elaldi N, Koksal I, Yildizdas D, Horoz OO, Willke A, Koç MM, Azak E, Elahi N, Annamma P, El Houfi A, Pirez Garcia MC, Vidal H, Perez F, Empaire GD, Ruiz Y, Hernandez D, Aponte D, Salinas E, Diaz C, Guzmán Siritt ME, Gil De Añez ZD, Bravo LM, Orozco N, Mejías E, Hung NV, Anh NQ, Chau NQ, Thu TA, Phuong DM, Binh NG, Thi Diem Tuyet L, Thi Van Trang D, Hong Thoa VT, Tien NP, Anh Thu LT, Hang PT, My Hanh TT, Thuy Hang TT, Phuong Anh DP. International Nosocomial Infection Control Consortium (INICC) report, data summary of 43 countries for 2007-2012. Device-associated module. Am J Infect Control 2014; 42:942-56. [PMID: 25179325 DOI: 10.1016/j.ajic.2014.05.029] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 05/07/2014] [Accepted: 05/07/2014] [Indexed: 12/14/2022]
Abstract
We report the results of an International Nosocomial Infection Control Consortium (INICC) surveillance study from January 2007-December 2012 in 503 intensive care units (ICUs) in Latin America, Asia, Africa, and Europe. During the 6-year study using the Centers for Disease Control and Prevention's (CDC) U.S. National Healthcare Safety Network (NHSN) definitions for device-associated health care-associated infection (DA-HAI), we collected prospective data from 605,310 patients hospitalized in the INICC's ICUs for an aggregate of 3,338,396 days. Although device utilization in the INICC's ICUs was similar to that reported from ICUs in the U.S. in the CDC's NHSN, rates of device-associated nosocomial infection were higher in the ICUs of the INICC hospitals: the pooled rate of central line-associated bloodstream infection in the INICC's ICUs, 4.9 per 1,000 central line days, is nearly 5-fold higher than the 0.9 per 1,000 central line days reported from comparable U.S. ICUs. The overall rate of ventilator-associated pneumonia was also higher (16.8 vs 1.1 per 1,000 ventilator days) as was the rate of catheter-associated urinary tract infection (5.5 vs 1.3 per 1,000 catheter days). Frequencies of resistance of Pseudomonas isolates to amikacin (42.8% vs 10%) and imipenem (42.4% vs 26.1%) and Klebsiella pneumoniae isolates to ceftazidime (71.2% vs 28.8%) and imipenem (19.6% vs 12.8%) were also higher in the INICC's ICUs compared with the ICUs of the CDC's NHSN.
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Zimmermann O, Homann J, Bangert A, Rottbauer W, Torzewski J, Katus H, Lorenz HM, Kaya Z. P240Use of IL-10 overexpressing macrophages for targeted anti-inflammatory therapy in humans - benefit of the M2 polarization? Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu082.172] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Seyler C, Scherer D, Koepple C, Kulzer M, Korkmaz S, Thomas D, Kaya Z, Backs J, Katus HA, Zitron E. P107Role of plasma membrane-associated AKAPs 15/18 and 79 for the regulation of cardiac IK1 current by protein kinase A. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu082.48] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kaya Z, Kaya BC, Sezen H, Bilinc H, Asoglu R, Yildiz A, Taskin A, Yalcin S, Sezen Y, Aksoy N. Serum ceruloplasmin levels in acute decompensated heart failure. Clin Ter 2014; 164:e187-91. [PMID: 23868636 DOI: 10.7417/ct.2013.1558] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Ceruloplasmin (Cp) is a serum protein that belongs to the family of α2-globulins and it is increased in patients with after acute myocardial infarction complicated with heart failure. Aim of the study was to investigate levels of serum Cp in patients with acute decompensated heart failure. MATERIALS AND METHODS The present cross-sectional observational study consists of three groups: Fifty patients with decompensated heart failure (Group 1) and same 50 patients after compensation (Group 2); 50 control patients group with comparable age and sex without heart failure (Group 3). Demographic, echocardiographic and biochemical data of patients were collected. Serum Cp level was determined spectrophotometrically. RESULTS Serum ceruloplasmin was significantly increased in Groups 1 (820.8 ± 78.5 IU/dL) and 2 (873.5 ± 121.0 IU/dL) compared, to Group 3 (640.6 ± 132.4 IU/dL) (p<0.001). In the sub-group analysis, this difference was due to the difference between Groups 3, Group 1 and 2 (both p=0.0001) whereas no significant difference was present between Group I and Group 2 (p>0.063). A positive correlation was found between Cp and female sex, heart rate, systolic and diastolic blood pressure, acetylsalisilic acid and diuretic use, left ventricular systolic and diastolic diameter, mitral regurgitation, and negative correlation was found between Cp and ejection fraction (p<0.05 for all) whereas none of the parameters were independently associated with serum Cp level (p>0.05). CONCLUSIONS Findings of the present study suggest that serum Cp level is increased in both decompensated and compensated HF compared to controls. Further large scale studies are needed to elucidate the pathophysiological mechanisms of increased Cp in HF.
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Affiliation(s)
- Z Kaya
- Department of Cardiology, Harran University, Sanlıurfa, Turkey.
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Vasile M, Kaya Z, Frerix M, Mueller-Ladner U, Rolf A, Meier F. AB0202 Cardiac Troponin T and Anti-Cardiac Troponin I Antibodies in Patients with Systemic Sclerosis: A Monocentric, Retrospective Pilot Study. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3595] [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: 11/04/2022]
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Gürel S, Gürel E, Kaya Z, Erdal M, Güler E. Effects of Antimitotic Agents on Haploid Plant Production from Unpollinated Ovules of Sugar Beet (Beta VulgarisL.). BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2003.10817065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Karaman S, Karaman T, Dogru S, Onder Y, Citil R, Bulut YE, Tapar H, Sahin A, Arici S, Kaya Z, Suren M. Prevalence of sleep disturbance in chronic pain. Eur Rev Med Pharmacol Sci 2014; 18:2475-2481. [PMID: 25268092] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE Sleep is a vital function for human beings, which can be affected by several factors. Chronic pain is one of these factors where it is the most frequent cause for seeking medical care in combination with insomnia. The aim of this study is to examine the prevalence and relationship between sleep disturbance and chronic pain. PATIENTS AND METHODS After approval, a total of 85 Family Medicine Units from over 170 in Tokat were randomly selected using a 50% sampling. A sample of 2635 subjects, over the age of 19 years, who were registered with the selected Family Medicine Units, were assessed due to gender, age group, and the urban/rural population size of Tokat using the stratified sampling method. The sample size distribution was calculated as 1515 urban subjects, 1120 rural subjects; 1345 female subjects, 1290 male subjects; 1123 subjects between 20-39 years of age, 1103 subjects between the ages of 40-64, and 409 subjects over 64 years of age. After sampling, subjects were invited to participate in the study via an invitation letter, and agreeing individuals were taken to the Family Medicine Unit for face-to-face meetings. Written, informed consent was obtained, along with demographic data. The presence of chronic pain was recorded. According to the presence of chronic pain, all subjects were separated into two groups as Group Chronic Pain and Group Non-Chronic Pain. The visual analog scale for pain intensity, and Pittsburgh Sleep Quality Index for sleep quality, were performed with all subjects. A multiple linear regression model was used to assess the predictors of sleep quality. Analyses were conducted using the Statistical Package for Social Sciences program (SPSS Inc., Chicago, IL, USA), version 20.0. The statistical significance for all analyses was set at p < 0.05. RESULTS The mean global Pittsburgh Sleep Quality Index score of Group Chronic Pain (5.30 ± 4.29) was significantly higher than in Group Non-Chronic Pain (3.22 ± 3.30; p < 0.01). The mean Pittsburgh Sleep Quality Index scores of females (5.69 ± 4.40) were significantly higher than males (4.54 ± 3.96) in Group Chronic Pain (p = 0.000045). A total of 40.7% of patients in Group Chronic Pain, and 21.9% in Group Non-Chronic Pain demonstrated poorer sleep quality according to the Pittsburgh Sleep Quality Index scores, with a cut-off level > 5. A moderate positive correlation was found between the global Pittsburgh Sleep Quality Index and Visual Analog Scale scores (r = 0.310, p < 0.01). A multiple linear regression analysis showed that age, gender, income, Visual Analog Scale, and presence of depression were the significant predictors for Pittsburgh Sleep Quality Index score. CONCLUSIONS The current study revealed that chronic pain and pain intensity are important predictors of sleep quality.
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Affiliation(s)
- S Karaman
- Department of Anesthesiology and Reanimation, Gaziosmanpasa University School of Medicine, Tokat, Turkey.
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Bahat G, Iliaz R, Selcuk Akpinar T, Tufan A, Tufan F, Kaya Z, Kiyan E, Ozkaya H, Karisik E, Tekin D, Yucel N, Erten N, Akif Karan M. An insight for chronic obstructive pulmonary disease (COPD) and risk factors among male Turkish nursing home residents. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.460] [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: 10/26/2022]
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Karapinar H, Acar G, Kirma C, Kaya Z, Karavelioglu Y, Kucukdurmaz Z, Esen O, Alizade E, Dasli T, Sirma D, Esen AM. Delayed right atrial lateral electromechanical coupling relative to the septal one can be associated with paroxysmal atrial fibrillation. Eur Rev Med Pharmacol Sci 2013; 17:2172-2178. [PMID: 23893183] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Non-invasive prediction of paroxysmal atrial fibrillation (PAF) is one of the most recent interests of cardiology. AIM The current study investigates the relationship between the atrial electromechanical coupling time (EMCT) and PAF. PATIENTS AND METHODS A group of 35 patients with PAF was compared with a group of 37 subjects without PAF. Pulsed wave tissue Doppler evaluations of atrial walls were performed from apical four chambers view under ECG monitoring. The time intervals from the onset of P wave to the onset of late diastolic wave (A') at right atrial wall (P-RA), interatrial septum (P-IAS), and left atrial wall (P-LA, maximum EMCT) were measured. The right atrial EMCT (P-RA minus P-IAS), left atrial EMCT (P-LA minus P-IAS) and interatrial EMCT (P-LA minus P-RA) were computed. A' wave velocities were measured from each atrial wall. RESULTS RA (16.0±13.1 vs. -8.7±18.6 ms, p < 0.001) and maximum (91.5±32.6 vs. 72.0±23.1 ms, p = 0.001) EMCT were longer, RA A' velocity was higher in the patient group. There were no differences between the groups in LA and interatrial EMCT, and septal and LA A' velocities. Regression analysis revealed that only RA [OR: 1.148 (1.041-1.267), p = 0.006] and maximum [OR: 1.099 (1.009-1.197), p = 0.031] EMCT were independent variables for PAF. In order to predict patients with PAF, we have chosen +7.5 msn for the RA EMCT which yielded 69% sensitivity and 71.4% specificity to predict patients. CONCLUSIONS Delayed RA lateral EMCT relative to septal one and delayed maximum EMCT detected by tissue Doppler could be a valuable method for identifying patients with PAF.
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Affiliation(s)
- H Karapinar
- Department of Cardiology, Medical School, Cumhuriyet University, Sivas, Turkey.
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Arici S, Karaman S, Dogru S, Arici A, Karaman T, Tapar H, Suren M, Kaya Z. Effects of isoflurane in an intoxication model: experimental study. Eur Rev Med Pharmacol Sci 2013; 17:1738-1743. [PMID: 23852896] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Isoflurane is a volatile anaesthetic that has been commonly used since 1980. The major metabolites of isoflurane are fluoride ion and trifluoroacetate, both excreted in the urine. AIM This study manage to show the histopathological findings of ingested isoflurane on liver, kidney and lugs in an animal model. Twenty-one rabbits were selected and divided into three groups: Group Isoflurane-5 (I-5); Group Isoflurane-10 (I-10); and Group Control (C). Each group consisted of seven rabbits. I-5 and I-10 received 5 ml/kg and 10 ml/kg of liquid isoflurane, respectively, via nasogastric tube, while C received 5 ml/kg saline (0.9% NaCI). All animals in I-5 and I-10 were sacrificed without anesthetic drug administration. Tissue samples from livers, kidneys and lungs were collected, preserving tissue unity and avoiding infliction of any trauma. Samples were fixed in 10% formalin solution, embedded in paraffin blocks and sliced into 5 μm sections. To investigate the effects of isoflurane, sections were examined under light microscope and histopathological changes were scored. RESULTS Mean injury scores and the appearance of portal lymphocyte infiltration in liver samples showed significant increases in I-5 and I-10 compared to C (p = 0.005, p = 0.001 and p = 0.001, respectively). Mean lung injury scores revealed significant increases after isoflurane treatment in I-5 and I-10 compared to C (p = 0.026 and p = 0.017, respectively). CONCLUSIONS Ingested isoflurane led to mild liver and lung injuries in rabbits.
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Affiliation(s)
- S Arici
- Department of Anesthesiology and Reanimation, Gaziosmanpasa University School of Medicine, Tokat, Turkey.
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Volz C, Heger P, Laohachewin D, Lasitschka F, Kaya Z, Katus HA, Andrassy M. The role of HMGB1 in diabetic cardiomyopathy. DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341699] [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: 10/26/2022]
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Gunebakmaz O, Duran M, Kaya Z, Kaya MG. Contrast agent: a scapegoat for serum creatinine increase in patients with acute myocardial infarction undergoing coronary angiography. Angiology 2013; 64:400. [PMID: 23515412 DOI: 10.1177/0003319713481490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kaya Z, Salih Aydin M, Hazar A, Can Ata E, Sezen H, Yildiz A, Demirbag R, Aksoy N. Association of serum paraoxonase activity and coronary artery calcification. Eur Rev Med Pharmacol Sci 2013; 17:2121-2126. [PMID: 23884836] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM It has been known that there was a relation between the activities of serum paraoxonase (PON) and the severity of the coronary artery disease. However, little is known about association of coronary artery calcification (CAC) and serum PON activities. The aim of this study is to evaluate the relationship between CAC and serum PON activities. PATIENTS AND METHODS We measure serum PON activities from 122 patients (42 female, mean age = 62±10 years) with angiographically documented CAC (Group I), and 138 patients (54 female, mean age = 60±10 years) without CAC (Group II). Coronary calcification was detected with fluoroscopy before coronary angiography. Serum PON activities were measured by spectrophotometrically method. Patient characteristics and baseline data were recorded from patient's files. RESULTS The triglyceride levels is lower in group I than group II (p = 0.040). Diastolic blood pressure and frequency of diabetes mellitus was higher in the group I than group II (respectively p = 0.012 and p = 0.022). The other clinic and laboratory parameters were similar in two groups (all p > 0.05). The only statistically significant differences between with CAC and without CAC groups in respect to serum PON activities were present (170.6 ± 59.6 vs. 209.6 ± 69.8 U/ml; respectively, p < 0.001). There was a negative correlation between serum PON activities and presence of CAC (p < 0.001). CONCLUSIONS These data indicate that the serum PON activities are decreased in patients with CAC. The serum PON activities may play a role in development of the CAC and reduced serum PON activity might represent a biochemical marker of CAC.
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Affiliation(s)
- Z Kaya
- Department of Cardiology and Department of Cardiovascular Surgery, Medical Faculty of Harran University, Sanliurfa, Turkey.
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Kaya Z, Süren M, Arici S, Karaman S, Tapar H, Erdemir F. Prospective, randomized, double-blinded comparison of the effects of caudally administered levobupivacaine 0.25% and bupivacaine 0.25% on pain and motor block in children undergoing circumcision surgery. Eur Rev Med Pharmacol Sci 2012; 16:2014-2020. [PMID: 23242731] [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] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND Caudal anesthesia is widely used as intraoperative and postoperative analgesia in children's subumbilical surgeries such as on the urogenital system, lower extremities and lower abdomen to reduce the stress response to surgery and to facilitate the general anesthesia. AIM The purpose of this study was to compare the effects of caudally administered bupivacaine and levobupivacaine of equal volume and concentration on motor block and postoperative pain in children undergoing circumcision surgery. PATIENTS AND METHODS The prospective, randomized, double-blind study included 60 patients with ages ranging from 1-10 years and ASA (American Society of Anesthesiologists) physical status of I-II who underwent elective circumcision surgery. The patients were divided into two groups: group B received 0.5 ml/kg of bupivacaine 0.25% caudally and group L received 0.5 ml/kg of levobupivacaine 0.25% caudally. Postoperative pain was assessed by children's and infant's postoperative pain scale and motor block was assessed by the Bromage scale. RESULTS The mean children's and infant's postoperative pain scale of group B was significantly lower than that of group L (p < 0.001). Three patients in group B and seven patients in group L needed additional analgesia after the incision. There was no significant difference between groups in terms of Bromage scores and in both groups the residual motor block was found to be zero at the 150th minutes. CONCLUSION According to these findings, bupivacaine has an adequate quality of analgesia than levobupivacaine. We suggest that bupivacaine for caudal block at the concentration of 0.25% (0.5 ml/kg) provides an adequate level of analgesia for outpatient circumcision surgery.
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Affiliation(s)
- Z Kaya
- Department of Anesthesiology and Reanimation, Gaziosmanpasa University School of Medicine Tokat, Turkey.
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Esmer A, Kaya Z, Demirbag R, Kaya B, Asoglu R, Sumbul S, Sezen H, Bilinc H, Sezen Y, Yildiz A, Deveci E, Aksoy N. PP-008 PULMONARY ARTERY SYSTOLIC PRESSURE AND OXIDATIVE PARAMETERS. Int J Cardiol 2012. [DOI: 10.1016/s0167-5273(12)70246-2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Can F, Kaya Z, Kaya B, Asoglu R, Sumbul S, Sezen H, Bilinc H, Sezen Y, Yildiz A, Yesilay A, Demirbag R, Aksoy N. PP-001 ASSOCIATION OF BLOOD TRIGLYCERIDE LEVELS AND PROPAGATION VELOCITY OF THE DESCENDING THORACIC AORTA. Int J Cardiol 2012. [DOI: 10.1016/s0167-5273(12)70240-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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