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Aksu B, Afonso AC, Akil I, Alpay H, Atmis B, Aydog O, Bayazıt AK, Bayram MT, Bilge I, Bulut IK, Buyukkaragoz B, Comak E, Demir BK, Dincel N, Donmez O, Durmus MA, Dursun H, Dusunsel R, Duzova A, Ertan P, Gedikbasi A, Goknar N, Guven S, Hacihamdioglu D, Jankauskiene A, Kalyoncu M, Kavukcu S, Kenan BU, Kucuk N, Kural B, Litwin M, Montini G, Morello W, Obrycki L, Omer B, Oner HA, Ozdemir EM, Ozkayin N, Paripovic D, Pehlivanoglu C, Saygili S, Schaefer F, Schaefer S, Sonmez F, Tabel Y, Tas N, Tasdemir M, Teixeira A, Tekcan D, Topaloglu R, Tulpar S, Turkkan ON, Uysal B, Uysalol M, Vitkevic R, Yavuz S, Yel S, Yildirim T, Yildirim ZY, Yildiz N, Yuksel S, Yurtseven E, Yilmaz A. Urine soluble TLR4 levels may contribute to predict urinary tract infection in children: the UTILISE Study. Pediatr Nephrol 2024; 39:483-491. [PMID: 37462743 DOI: 10.1007/s00467-023-06063-0] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 06/11/2023] [Accepted: 06/12/2023] [Indexed: 09/29/2023]
Abstract
BACKGROUND One of the most common bacterial infections in childhood is urinary tract infection (UTI). Toll-like receptors (TLRs) contribute to immune response against UTI recognizing specific pathogenic agents. Our aim was to determine whether soluble TLR4 (sTLR4), soluble TLR5 (sTLR5) and interleukin 8 (IL-8) can be used as biomarkers to diagnose UTI. We also aimed to reveal the relationship between urine Heat Shock Protein 70 (uHSP70) and those biomarkers investigated in this study. METHODS A total of 802 children from 37 centers participated in the study. The participants (n = 282) who did not meet the inclusion criteria were excluded from the study. The remaining 520 children, including 191 patients with UTI, 178 patients with non-UTI infections, 50 children with contaminated urine samples, 26 participants with asymptomatic bacteriuria and 75 healthy controls were included in the study. Urine and serum levels of sTLR4, sTLR5 and IL-8 were measured at presentation in all patients and after antibiotic treatment in patients with UTI. RESULTS Urine sTLR4 was higher in the UTI group than in the other groups. UTI may be predicted using 1.28 ng/mL as cut-off for urine sTLR4 with 68% sensitivity and 65% specificity (AUC = 0.682). In the UTI group, urine sTLR4 levels were significantly higher in pyelonephritis than in cystitis (p < 0.0001). Post-treatment urine sTLR4 levels in the UTI group were significantly lower than pre-treatment values (p < 0.0001). CONCLUSIONS Urine sTLR4 may be used as a useful biomarker in predicting UTI and subsequent pyelonephritis in children with UTI. A higher resolution version of the Graphical abstract is available as Supplementary information.
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Affiliation(s)
- Bagdagul Aksu
- Department of Pediatrics Basic Sciences, Institute of Child Health, Istanbul University, Istanbul, Turkey.
- Division of Pediatric Nephrology, Istanbul Faculty of Medicine, Istanbul University, Fatih, Istanbul, Turkey.
| | - Alberto Caldas Afonso
- Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - Ipek Akil
- Division of Pediatric Nephrology, Faculty of Medicine, Celal Bayar University, Manisa, Turkey
| | - Harika Alpay
- Division of Pediatric Nephrology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Bahriye Atmis
- Pediatric Nephrology, Erzurum Training and Research Hospital, Erzurum, Turkey
- Division of Pediatric Nephrology, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Ozlem Aydog
- Division of Pediatric Nephrology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Aysun Karabay Bayazıt
- Division of Pediatric Nephrology, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Meral Torun Bayram
- Division of Pediatric Nephrology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Ilmay Bilge
- Division of Pediatric Nephrology, Department of Pediatrics, School of Medicine, Koc University, Istanbul, Turkey
| | - Ipek Kaplan Bulut
- Division of Pediatric Nephrology, Faculty of Medicine, Ege University, Izmir, Turkey
| | - Bahar Buyukkaragoz
- Division of Pediatric Nephrology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Elif Comak
- Division of Pediatric Nephrology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Belde Kasap Demir
- Division of Pediatric Nephrology, Tepecik Training and Research Hospital, University of Health Sciences, Izmir, Turkey
- Division of Pediatric Nephrology, Izmir Katip Celebi University Faculty of Medicine, Izmir, Turkey
| | - Nida Dincel
- Division of Pediatric Nephrology, Dr. Behcet Uz Children Diseases Training and Research Hospital, University of Health Sciences, Izmir, Turkey
| | - Osman Donmez
- Division of Pediatric Nephrology, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Mehmet Akif Durmus
- Department of Medical Microbiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Hasan Dursun
- Division of Pediatric Nephrology, Okmeydani Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Ruhan Dusunsel
- Division of Pediatric Nephrology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Ali Duzova
- Division of Pediatric Nephrology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Pelin Ertan
- Division of Pediatric Nephrology, Faculty of Medicine, Celal Bayar University, Manisa, Turkey
| | - Asuman Gedikbasi
- Department of Rare Diseases, Institute of Child Health, Istanbul University, Istanbul, Turkey
| | - Nilufer Goknar
- Division of Pediatric Nephrology, Bagcilar Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Sercin Guven
- Division of Pediatric Nephrology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Duygu Hacihamdioglu
- Division of Pediatric Nephrology, Faculty of Medicine, Bahcesehir University, Istanbul, Turkey
| | - Augustina Jankauskiene
- Clinic of Pediatrics, Institute of Clinical Medicine, Vilnius University, Vilnius, Lithuania
| | - Mukaddes Kalyoncu
- Division of Pediatric Nephrology, Faculty of Medicine, Karadeniz Technic University, Trabzon, Turkey
| | - Salih Kavukcu
- Division of Pediatric Nephrology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Bahriye Uzun Kenan
- Division of Pediatric Nephrology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Nuran Kucuk
- Division of Pediatric Nephrology, Kartal Training and Research Hospital, Istanbul, Turkey
| | - Bahar Kural
- Department of Pediatrics, Health Science University Bakirkoy Sadi Konuk Training and Research Hospital, Istanbul, Turkey
| | - Mieczysław Litwin
- Division of Nephrology, Kidney Transplantation and Hypertension, The Children's Memorial Health Institute, Warsaw, Poland
| | - Giovanni Montini
- Pediatric Nephrology, Dialysis and Transplant Unit, Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milano, Milan, Italy
| | - William Morello
- Pediatric Nephrology, Dialysis and Transplant Unit, Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, Milan, Italy
| | - Lukasz Obrycki
- Division of Nephrology, Kidney Transplantation and Hypertension, The Children's Memorial Health Institute, Warsaw, Poland
| | - Beyhan Omer
- Department of Biochemistry, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Huseyin Adil Oner
- Division of Pediatric Nephrology, Istanbul Faculty of Medicine, Istanbul University, Fatih, Istanbul, Turkey
| | - Ebru Misirli Ozdemir
- Department of Pediatrics, Okmeydani Training and Research Hospital, Istanbul, Turkey
| | - Nese Ozkayin
- Division of Pediatric Nephrology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Dusan Paripovic
- Division of Pediatric Nephrology, University Children's Hospital, Belgrade, Serbia
| | - Cemile Pehlivanoglu
- Division of Pediatric Nephrology, Umraniye Training and Research Hospital, Istanbul, Turkey
| | - Seha Saygili
- Division of Pediatric Nephrology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Franz Schaefer
- Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University, Heidelberg, Germany
| | - Susanne Schaefer
- Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University, Heidelberg, Germany
| | - Ferah Sonmez
- Division of Pediatric Nephrology, Faculty of Medicine, Adnan Menderes University, Aydin, Turkey
| | - Yilmaz Tabel
- Division of Pediatric Nephrology, Faculty of Medicine, Inonu University, Malatya, Turkey
| | - Nesrin Tas
- Division of Pediatric Nephrology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Mehmet Tasdemir
- Division of Pediatric Nephrology, Department of Pediatrics, School of Medicine, Koc University, Istanbul, Turkey
- Department of Pediatric Nephrology, Istinye University, Faculty of Medicine, Liv Hospital Ulus, Istanbul, Turkey
| | - Ana Teixeira
- Division of Pediatric Nephrology, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - Demet Tekcan
- Division of Pediatric Nephrology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Rezan Topaloglu
- Division of Pediatric Nephrology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Sebahat Tulpar
- Division of Pediatric Nephrology, Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey
| | - Ozde Nisa Turkkan
- Division of Pediatric Nephrology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Berfin Uysal
- Division of Pediatric Nephrology, Dortcelik Children's Hospital, Bursa, Turkey
- Division of Pediatric Nephrology, Bursa City Hospital, Bursa, Turkey
| | - Metin Uysalol
- Division of Pediatric Emergency, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Renata Vitkevic
- Clinic of Pediatrics, Institute of Clinical Medicine, Vilnius University, Vilnius, Lithuania
| | - Sevgi Yavuz
- Division of Pediatric Nephrology, Department of Pediatrics, Kanuni Sultan Suleyman Research and Training Hospital, University of Health Sciences, Istanbul, Turkey
| | - Sibel Yel
- Division of Pediatric Nephrology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Tarik Yildirim
- Department of Pediatrics, Kanuni Sultan Suleyman Research and Training Hospital, University of Health Sciences, Istanbul, Turkey
| | - Zeynep Yuruk Yildirim
- Department of Pediatrics Basic Sciences, Institute of Child Health, Istanbul University, Istanbul, Turkey
- Division of Pediatric Nephrology, Istanbul Faculty of Medicine, Istanbul University, Fatih, Istanbul, Turkey
| | - Nurdan Yildiz
- Division of Pediatric Nephrology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Selcuk Yuksel
- Division of Pediatric Nephrology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Eray Yurtseven
- Department of Biostatistics, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Alev Yilmaz
- Department of Pediatrics Basic Sciences, Institute of Child Health, Istanbul University, Istanbul, Turkey
- Division of Pediatric Nephrology, Istanbul Faculty of Medicine, Istanbul University, Fatih, Istanbul, Turkey
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Gokce I, Kaya M, Cicek N, Guven S, Ercetin Y, Yildiz N, Kaya H, Alpay H. Collapsing Glomerulopathy in a Patient with a TRPC6 Mutation Presenting as Rapidly Progressive Glomerulonephritis: A Case Report and Review of the Literature. Saudi J Kidney Dis Transpl 2023; 34:254-258. [PMID: 38231721 DOI: 10.4103/1319-2442.393999] [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: 01/19/2024] Open
Abstract
Collapsing glomerulopathy (CG) is a proliferative disease characterized by segmental or global wrinkling of the glomerular basement membrane and the formation of pseudocrescents, whereas focal segmental glomerulosclerosis (FSGS) is characterized by podocytopenia, and focal and segmental sclerosis of the glomeruli. Mutations in NPHS1, NPHS2, WT1, PLCE1, CD2AP, ACTN4, and TRPC6 have been reported in steroid-resistant FSGS patients. The mutations p.R895C and p.R895L in Exon 13 are the only ones in TRPC6 causing CG reported to date. Here, we present the case of a 17-year-old male patient with a collapsing variant of familial FSGS caused by a mutation in TRPC6 (p.R895C) who presented with rapidly progressive (crescentic) and proliferative glomerulonephritis.
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Affiliation(s)
- Ibrahim Gokce
- Department of Pediatric Nephrology, Marmara University Medical School, Istanbul, Turkey
| | - Mehtap Kaya
- Department of Pediatric Nephrology, Marmara University Medical School, Istanbul, Turkey
| | - Neslihan Cicek
- Department of Pediatric Nephrology, Marmara University Medical School, Istanbul, Turkey
| | - Sercin Guven
- Department of Pediatric Nephrology, Marmara University Medical School, Istanbul, Turkey
| | - Yigit Ercetin
- Department of Medical Pathology, Marmara University Medical School, Istanbul, Turkey
| | - Nurdan Yildiz
- Department of Pediatric Nephrology, Marmara University Medical School, Istanbul, Turkey
| | - Handan Kaya
- Department of Medical Pathology, Marmara University Medical School, Istanbul, Turkey
| | - Harika Alpay
- Department of Pediatric Nephrology, Marmara University Medical School, Istanbul, Turkey
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3
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Gulmez R, Ozbey D, Agbas A, Aksu B, Yildiz N, Uckardes D, Saygili S, Yilmaz EK, Yildirim ZY, Tasdemir M, Kiykim A, Cokugras H, Canpolat N, Nayir A, Kocazeybek B, Caliskan S. Humoral and cellular immune response to SARS-CoV-2 mRNA BNT162b2 vaccine in pediatric kidney transplant recipients compared with dialysis patients and healthy children. Pediatr Nephrol 2022:10.1007/s00467-022-05813-w. [PMID: 36459243 PMCID: PMC9716124 DOI: 10.1007/s00467-022-05813-w] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 10/10/2022] [Accepted: 10/31/2022] [Indexed: 12/04/2022]
Abstract
BACKGROUND Compared with the general population, the immune response to COVID-19 mRNA vaccines is lower in adult kidney transplant recipients (KTRs). However, data is limited for pediatric KTRs. In this study, we aimed to assess humoral and cellular immune responses to the COVID-19 mRNA vaccine in pediatric KTRs. METHODS This multicenter, prospective, case-control study included 63 KTRs (37 male, aged 12-21 years), 19 dialysis patients, and 19 controls. Humoral (anti-SARS-CoV2 IgG, neutralizing Ab (nAb)) and cellular (interferon-gamma release assay (IGRA)) immune responses were assessed at least one month after two doses of BNT162b2 mRNA vaccine. RESULTS Among COVID-19 naïve KTRs (n = 46), 76.1% tested positive for anti-SARS-CoV-2 IgG, 54.3% for nAb, and 63% for IGRA. Serum levels of anti-SARS-CoV-2 IgG and nAb activity were significantly lower in KTRs compared to dialysis and control groups (p < 0.05 for all). Seropositivity in KTRs was independently associated with shorter transplant duration (p = 0.005), and higher eGFR (p = 0.007). IGRA titer was significantly lower than dialysis patients (p = 0.009). Twenty (43.4%) KTRs were positive for all immune parameters. Only four of 11 seronegative KTRs were IGRA-positive. COVID-19 recovered KTRs had significantly higher anti-SARS-CoV-2 IgG and nAb activity levels than COVID-19 naïve KTRs (p = 0.018 and p = 0.007, respectively). CONCLUSIONS The humoral and cellular immune responses to SARS-CoV-2 mRNA BNT162b2 vaccine are lower in pediatric KTRs compared to dialysis patients. Further prospective studies are required to demonstrate the clinical efficacy of the mRNA vaccine in KTRs. This prospective study was registered in ClinicalTrials.gov (NCT05465863, registered retrospectively at 20.07.2022). A higher resolution version of the Graphical abstract is available as Supplementary information.
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Affiliation(s)
- Ruveyda Gulmez
- grid.506076.20000 0004 1797 5496Department of Pediatric Nephrology, Cerrahpasa School of Medicine, IU-Cerrahpasa, Istanbul, Turkey
| | - Dogukan Ozbey
- grid.506076.20000 0004 1797 5496Department of Microbiology, Cerrahpasa School of Medicine, IU-Cerrahpasa, Istanbul, Turkey
| | - Ayse Agbas
- Department of Pediatric Nephrology, Cerrahpasa School of Medicine, IU-Cerrahpasa, Istanbul, Turkey.
| | - Bagdagul Aksu
- grid.9601.e0000 0001 2166 6619Department of Pediatric Nephrology, Istanbul University School of Medicine, Istanbul, Turkey ,grid.9601.e0000 0001 2166 6619Institute of Child Health, Istanbul University, Istanbul, Turkey
| | - Nurdan Yildiz
- grid.16477.330000 0001 0668 8422Department of Pediatric Nephrology, Marmara University School of Medicine, Istanbul, Turkey
| | - Diana Uckardes
- grid.411776.20000 0004 0454 921XDepartment of Pediatric Nephrology, Medeniyet University School of Medicine, Istanbul, Turkey
| | - Seha Saygili
- grid.506076.20000 0004 1797 5496Department of Pediatric Nephrology, Cerrahpasa School of Medicine, IU-Cerrahpasa, Istanbul, Turkey
| | - Esra Karabag Yilmaz
- grid.506076.20000 0004 1797 5496Department of Pediatric Nephrology, Cerrahpasa School of Medicine, IU-Cerrahpasa, Istanbul, Turkey
| | - Zeynep Yuruk Yildirim
- grid.9601.e0000 0001 2166 6619Department of Pediatric Nephrology, Istanbul University School of Medicine, Istanbul, Turkey
| | - Mehmet Tasdemir
- grid.459708.70000 0004 7553 3311Department of Pediatric Nephrology, Istinye University School of Medicine, Liv Hospital, Istanbul, Turkey
| | - Ayca Kiykim
- grid.506076.20000 0004 1797 5496Department of Pediatric Immunology and Allergy, Cerrahpasa School of Medicine, IU-Cerrahpasa, Istanbul, Turkey
| | - Haluk Cokugras
- grid.506076.20000 0004 1797 5496Department of Pediatric Immunology and Allergy, Cerrahpasa School of Medicine, IU-Cerrahpasa, Istanbul, Turkey
| | - Nur Canpolat
- grid.506076.20000 0004 1797 5496Department of Pediatric Nephrology, Cerrahpasa School of Medicine, IU-Cerrahpasa, Istanbul, Turkey
| | - Ahmet Nayir
- grid.9601.e0000 0001 2166 6619Department of Pediatric Nephrology, Istanbul University School of Medicine, Istanbul, Turkey ,Department of Pediatric Nephrology, Memorial Hospital, Istanbul, Turkey
| | - Bekir Kocazeybek
- grid.506076.20000 0004 1797 5496Department of Microbiology, Cerrahpasa School of Medicine, IU-Cerrahpasa, Istanbul, Turkey
| | - Salim Caliskan
- grid.506076.20000 0004 1797 5496Department of Pediatric Nephrology, Cerrahpasa School of Medicine, IU-Cerrahpasa, Istanbul, Turkey
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Burballa C, Cantero-Recasens G, Prikhodina L, Lugani F, Schlingmann K, Ananin PV, Besouw M, Bockenhauer D, Madariaga L, Bertholet-Thomas A, Taroni F, Parolin M, Conlon P, Delprete D, Chauveau D, Koster-Kamphuis L, Fila M, Pasini A, Castro I, Colussi G, Gil M, Mohidin B, Wlodkowski T, Schaefer F, Ariceta G, Bacchetta J, Paglialonga F, Murer L, Andersone I, Sayer JA, Boyer O, Levart TK, Rus R, Paripović D, Gonzalez ER, Nieto F, Zieg J, Caballero JÁ, Vara J, Keijzer-Veen M, Ferraro PM, Gonzalez R, Rotaeche RMS, Fenoglio R, Ballesteros SS, Lobo ST, Ghuysen MS, Ordóñez Álvarez FA, Vandyck M, Rosenberg M, Thorsteinsdottir H, Tasic V, Bayram MT, Mir S, Costea GC, Yildiz N, Lumbreras J, Yel S, Cerkauskiene R, La Manna A, Elhassan E, Ciurli F, Meseguer A, Duran M. Clinical and genetic characteristics of Dent's Disease type 1 in Europe. Nephrol Dial Transplant 2022; 38:1497-1507. [DOI: 10.1093/ndt/gfac310] [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] [Received: 07/30/2022] [Indexed: 11/30/2022] Open
Abstract
Abstract
Background
Dent's disease type 1 (DD1) is a rare X-linked nephropathy caused by CLCN5 mutations, characterized by proximal tubule dysfunction, including low-molecular-weight proteinuria (LMWP), hypercalciuria, nephrolithiasis-nephrocalcinosis, progressive chronic kidney disease (CKD) and kidney failure (KF). Current management is symptomatic and does not prevent disease progression. Here we describe the contemporary DD1 picture across Europe to highlight its unmet needs.
Methods
A physician-based anonymous international e-survey supported by several European Nephrology Networks/Societies was conducted. Questions focused on DD1 clinical features, diagnostic procedure and mutation spectrum.
Results
Two-hundred seven DD1 male patients were reported, being clinical data available for 163 with confirmed CLCN5 mutations. Proteinuria was the most common leading manifestation (49.1%). During follow-up, all patients showed LMWP, 66.4% nephrocalcinosis, 44.4% hypercalciuria and 26.4% nephrolithiasis. After 5.5 years, ∼50% of patients presented renal dysfunction, 20.7% developed CKD ≥ 3, and 11.1% KF. At last visit, hypercalciuria was more frequent in pediatric patients than in adults (73.4% vs. 19.0%). Conversely, nephrolithiasis, nephrocalcinosis and renal dysfunction were more prominent in adults. Furthermore, CKD progressed with age. Despite no clear phenotype/genotype correlation was observed, decreased glomerular filtration rate was more frequent in subjects with CLCN5 mutations affecting the pore or CBS domains compared to those with early-stop mutations.
Conclusions
Results from this large DD1 cohort confirm previous findings and provide new insights regarding age and genotype impact on CKD progression. Our data strongly support that DD1 should be considered in male patients with CKD, nephrocalcinosis/hypercalciuria and non-nephrotic proteinuria and provide additional support for new research opportunities.
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Affiliation(s)
- Carla Burballa
- Vall d'Hebron University Hospital (HUVH) - Vall d'Hebron Research Institute (VHIR) , Barcelona , Spain
| | - Gerard Cantero-Recasens
- Vall d'Hebron University Hospital (HUVH) - Vall d'Hebron Research Institute (VHIR) , Barcelona , Spain
| | - Larisa Prikhodina
- Veltishev Research & Clinical Institute for Pediatrics, Pirogov Russian National Research Medical University , Moscow , Russia
| | | | | | - Petr V Ananin
- Scientific Centre of Children Health 2 , Moscow , Russia
| | | | - Detlef Bockenhauer
- UCL Division of Medicine and Great Ormond Street Hospital , London , United Kingdom
| | - Leire Madariaga
- Hospital Universitario Cruces, Biocruces-Bizkaia, UPV/EHU , Barakaldo , Spain
| | | | - Francesca Taroni
- Pediatric Nephrology Dialysis and Transplant Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico , Milan , Italy
| | - Mattia Parolin
- Nefrologia Pediatrica, Dialisi e Trapianto, Università di Padova , Italy
| | | | | | | | - Linda Koster-Kamphuis
- Amalia Children's Hospital, Radboud University Medical Center , Nijmegen , the Netherlands
| | - Marc Fila
- Arnaud de Villeneuve , Montpellier , France
| | - Andrea Pasini
- Azienda Ospedaliero-Universitaria Santorsola-Malpighi Bologna , Italy
| | - Isabel Castro
- Complexo Hospitalario de Pontevedra , Pontevedra , Spain
| | | | - Marta Gil
- Hospital Universitario Santiago de Compostela , Santiago de Compostela , Spain
| | | | | | | | - Gema Ariceta
- Vall d'Hebron University Hospital (HUVH) - Vall d'Hebron Research Institute (VHIR) , Barcelona , Spain
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BEK S, Eren N, Yildiz N, Uslu H, Waldreus N, Dervisoglu E, Kalender B. POS-499 Thirst Intensity Survey in ADPKD patients. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Yuruk Yildirim ZN, Usta Akgul S, Alpay H, Aksu B, Savran Oguz F, Kiyak A, Akinci N, Yavuz S, Ozcelik G, Gedikbasi A, Gokce I, Ozkayin N, Yildiz N, Pehlivanoglu C, Goknar N, Saygili S, Tulpar S, Kucuk N, Bilge I, Tasdemir M, Agbas A, Dirican A, Emre S, Nayir A, Yilmaz A. PROGRESS STUDY: Progression of chronic kidney disease in children and heat shock proteins. Cell Stress Chaperones 2021; 26:973-987. [PMID: 34671941 PMCID: PMC8578260 DOI: 10.1007/s12192-021-01239-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 10/20/2022] Open
Abstract
Various molecular and cellular processes are involved in renal fibrosis, such as oxidative stress, inflammation, endothelial cell injury, and apoptosis. Heat shock proteins (HSPs) are implicated in the progression of chronic kidney disease (CKD). Our aim was to evaluate changes in urine and serum HSP levels over time and their relationships with the clinical parameters of CKD in children. In total, 117 children with CKD and 56 healthy children were examined. The CKD group was followed up prospectively for 24 months. Serum and urine HSP27, HSP40, HSP47, HSP60, HSP70, HSP72, and HSP90 levels and serum anti-HSP60 and anti-HSP70 levels were measured by ELISA at baseline, 12 months, and 24 months. The urine levels of all HSPs and the serum levels of HSP40, HSP47, HSP60, HSP70, anti-HSP60, and anti-HSP70 were higher at baseline in the CKD group than in the control group. Over the months, serum HSP47 and HSP60 levels steadily decreased, whereas HSP90 and anti-HSP60 levels steadily increased. Urine HSP levels were elevated in children with CKD; however, with the exception of HSP90, they decreased over time. In conclusion, our study demonstrates that CKD progression is a complicated process that involves HSPs, but they do not predict CKD progression. The protective role of HSPs against CKD may weaken over time, and HSP90 may have a detrimental effect on the disease course.
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Affiliation(s)
| | - Sebahat Usta Akgul
- Department of Medical Biology, Istanbul Faculty of Medicine, Istanbul University, 34390 Istanbul, Turkey
| | - Harika Alpay
- Division of Pediatric Nephrology, Medical Faculty, Marmara University, Istanbul, Turkey
| | - Bagdagul Aksu
- Division of Pediatric Nephrology, Istanbul Faculty of Medicine, Istanbul University, Capa, 34390 Istanbul, Turkey
- Institute of Child Health, Istanbul University, Istanbul, Turkey
| | - Fatma Savran Oguz
- Department of Medical Biology, Istanbul Faculty of Medicine, Istanbul University, 34390 Istanbul, Turkey
| | - Aysel Kiyak
- Division of Pediatric Nephrology, Kanuni Sultan Suleyman Education and Research Hospital, Istanbul, Turkey
| | - Nurver Akinci
- Division of Pediatric Nephrology, Sisli Etfal Education and Research Hospital, Istanbul, Turkey
| | - Sevgi Yavuz
- Division of Pediatric Nephrology, Kanuni Sultan Suleyman Education and Research Hospital, Istanbul, Turkey
| | - Gul Ozcelik
- Division of Pediatric Nephrology, Sisli Etfal Education and Research Hospital, Istanbul, Turkey
| | - Asuman Gedikbasi
- Institute of Child Health, Istanbul University, Istanbul, Turkey
- Division of Pediatric Nutrition and Metabolism, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Ibrahim Gokce
- Division of Pediatric Nephrology, Medical Faculty, Marmara University, Istanbul, Turkey
| | - Nese Ozkayin
- Division of Pediatric Nephrology, School of Medicine, Trakya University, Edirne, Turkey
| | - Nurdan Yildiz
- Division of Pediatric Nephrology, Medical Faculty, Marmara University, Istanbul, Turkey
| | - Cemile Pehlivanoglu
- Division of Pediatric Nephrology, Istanbul Faculty of Medicine, Istanbul University, Capa, 34390 Istanbul, Turkey
| | - Nilufer Goknar
- Division of Pediatric Nephrology, Bagcilar Education and Research Hospital, Istanbul, Turkey
| | - Seha Saygili
- Division of Pediatric Nephrology, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Sebahat Tulpar
- Division of Pediatric Nephrology, Bakirkoy Sadi Konuk Education and Research Hospital, Istanbul, Turkey
| | - Nuran Kucuk
- Division of Pediatric Nephrology, Kartal Education and Research Hospital, Istanbul, Turkey
| | - Ilmay Bilge
- Division of Pediatric Nephrology, School of Medicine, Koc University, Istanbul, Turkey
| | - Mehmet Tasdemir
- Division of Pediatric Nephrology, School of Medicine, Koc University, Istanbul, Turkey
| | - Ayse Agbas
- Division of Pediatric Nephrology, Haseki Education and Research Hospital, Istanbul, Turkey
| | - Ahmet Dirican
- Department of Biostatistics, Istanbul Faculty of Medicine, Istanbul University, 34390 Capa, Istanbul, Turkey
| | - Sevinc Emre
- Division of Pediatric Nephrology, Istanbul Faculty of Medicine, Istanbul University, Capa, 34390 Istanbul, Turkey
| | - Ahmet Nayir
- Division of Pediatric Nephrology, Istanbul Faculty of Medicine, Istanbul University, Capa, 34390 Istanbul, Turkey
| | - Alev Yilmaz
- Division of Pediatric Nephrology, Istanbul Faculty of Medicine, Istanbul University, Capa, 34390 Istanbul, Turkey
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7
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Rzayev T, Karadeniz Cerit K, Yildiz N, Ozdemir H, Memisoglu A, Bilgen H, Ozek E. Liver laceration presented as intraabdominal bleeding in a newborn with hypoxic-ischemic encephalopathy. Case Reports in Perinatal Medicine 2021. [DOI: 10.1515/crpm-2021-0043] [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: 11/15/2022]
Abstract
Abstract
Objectives
Birth injuries usually occur with two different mechanisms: trauma due to mechanic stress during labor and hypoxic-ischemic injury. Sometimes these two mechanisms can occur at the same time with a complex clinical picture.
Case presentation
The baby girl was born at 372/7 weeks after a prolonged second stage of labor, weighing 3,725 g, and was admitted to the Neonatal Intensive Care Unit with the diagnosis of hypoxic-ischemic encephalopathy. During follow up she developed multiorgan failure and severe anemia. On the third postnatal day, abdominal bleeding was detected. Laceration in the liver capsule was found and appeared to be the source of bleeding.
Conclusions
Abdominal bleeding secondary to mechanical laceration of the liver is hard to diagnose and may coexist with perinatal asphyxia.
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Affiliation(s)
- Turkay Rzayev
- Department of Pediatrics, Division of Neonatology , Marmara University Faculty of Medicine , Istanbul , Turkey
| | | | - Nurdan Yildiz
- Department of Pediatrics , Division of Nephrology , Marmara University Faculty of Medicine , Istanbul , Turkey
| | - Hulya Ozdemir
- Department of Pediatrics, Division of Neonatology , Marmara University Faculty of Medicine , Istanbul , Turkey
| | - Asli Memisoglu
- Department of Pediatrics, Division of Neonatology , Marmara University Faculty of Medicine , Istanbul , Turkey
| | - Hulya Bilgen
- Department of Pediatrics, Division of Neonatology , Marmara University Faculty of Medicine , Istanbul , Turkey
| | - Eren Ozek
- Department of Pediatrics, Division of Neonatology , Marmara University Faculty of Medicine , Istanbul , Turkey
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8
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Cicek N, Yildiz N, Asadov R, Yucelten AD, Tugtepe H, Alpay H. Kidney and Urinary Tract Involvement in Epidermolysis Bullosa: Is Routine Follow-Up Necessary? Dermatol Pract Concept 2021; 11:e2021051. [PMID: 34123558 DOI: 10.5826/dpc.1103a51] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2021] [Indexed: 10/31/2022] Open
Abstract
Background Several renal and urinary tract complications have been reported in patients with epidermolysis bullosa. Objective This study investigated kidney and urinary tract involvement in patients with epidermolysis bullosa. Patients and Methods Patients with epidermolysis bullosa in treatment at the Dermatology Unit were included in the study. Glomerular and tubular functions were investigated. Results The study included 16 patients (4 females, 12 males) of mean 11.1 years (SD = 8.1 years). Estimated GFR was normal in all patients except one with end-stage renal disease. Excluding this patient, the urinary albumin/creatinine ratio and the fractional excretion of sodium were normal. The mean beta-2 microglobulin/creatinine ratio was 278.8 μg/g, and it was abnormally high in 2 patients. The mean tubular phosphorus reabsorption was 92.6%; it was abnormally low in 1 patient. Severe kidney or urinary tract involvement was present in 2 patients with recessive dystrophic EB-generalized severe (RDEB-GS): one patient had obstructive bullous lesions in the urethra; the other had end-stage renal disease secondary to focal segmental glomerulosclerosis and was on peritoneal dialysis for 3 years. Conclusions Assessment for renal and urinary tract involvement should become a routine part of the evaluation of patients with any type of EB, but especially of patients with RDEB-GS. Patients with mild tubular dysfunction need long-term follow-up to detect early deterioration of renal function.
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Affiliation(s)
- Neslihan Cicek
- Department of Pediatric Nephrology, Marmara University School of Medicine, Istanbul, Turkey
| | - Nurdan Yildiz
- Department of Pediatric Nephrology, Marmara University School of Medicine, Istanbul, Turkey
| | - Ruslan Asadov
- Department of Radiology, Marmara University School of Medicine, Istanbul, Turkey
| | - Ayse Deniz Yucelten
- Department of Dermatology, Marmara University School of Medicine, Istanbul, Turkey
| | - Halil Tugtepe
- Department of Pediatric Urology, Marmara University School of Medicine, Istanbul, Turkey
| | - Harika Alpay
- Department of Pediatric Nephrology, Marmara University School of Medicine, Istanbul, Turkey
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9
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Sak M, Gokce I, Cicek N, Yildiz N, Baltacioglu F, Alpay H. Renal Artery Stenosis Presenting with Resistant Hypertension in Children and Adolescents: A Report of Five Cases. Turk J Nephrol 2020. [DOI: 10.5152/turkjnephrol.2020.3444] [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: 11/22/2022]
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10
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Cicek N, Yildiz N, Alpay H. Intravesical hyaluronic acid treatment in recurrent urinary tract infections in children with spina bifida and neurogenic bladder. J Pediatr Urol 2020; 16:366.e1-366.e5. [PMID: 32197933 DOI: 10.1016/j.jpurol.2020.02.009] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 02/16/2020] [Indexed: 01/24/2023]
Abstract
INTRODUCTION Damage to the glycosaminoglycan layer of the urothelium, which is composed of hyaluronic acid (HA), may increase the possibility of bacterial adherence and infections. Patients with neurogenic bladder (NB) who perform clean intermittent catheterization (CIC) 4-6 times a day are also under great risk for recurrent urinary tract infections (RUTIs). OBJECTIVE The aim of this study was to assess the efficacy and safety of intravesical HA in reducing the frequency of RUTIs in patients with spina bifida (SB) and NB, who perform CIC. MATERIALS AND METHODS Ten patients (nine girls, one boy) with SB and NB affected by RUTIs received intravesical instillation of HA. Ten patients (seven girls, three boys) with SB and NB who did not accept the intravesical HA therapy were included in the control group. All patients developed symptomatic RUTIs, which occurred at least three times in the previous 12 months. The study group was treated with intravesical 40 mg HA (Hyacyst®) weekly for four weeks, then monthly for the consequent three months. Recurrence of UTIs before and after the treatment was analyzed. RESULTS The mean age of the study group and the controls were 11.1 ± 4.8 (3.2-18.6) and 9.3 ± 5.4 (2.1-16.2) years, respectively. The mean UTIs per patient-month in the study group and the controls were 0.34 ± 0.05 and 0.35 ± 0.06, respectively. The mean follow-up time after the treatment was 16.6 ± 6.9 months in the study group and 16 ± 6.1 months in the controls. The mean UTIs per patient-month significantly decreased in the study group after the treatment (p < 0.001) but showed no significant difference in the control group (p = 0.174). When study and control groups were compared, the mean UTIs per patient-month showed no significant difference before treatment (p = 0.77) but significantly decreased in the study group after the treatment (p < 0.001). DISCUSSION To the best of the authors' knowledge, this study is the first one evaluating the efficacy of intravesical HA in the treatment of RUTIs in children with SB and NB. However, this study has several limitations, such as the small sample size and short follow-up time. CONCLUSION The findings of the present study indicate that intravesical HA is an effective and safe treatment that reduces RUTIs in patients with SB and NB, who perform CIC.
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Affiliation(s)
- Neslihan Cicek
- Department of Pediatric Nephrology, Marmara University School of Medicine, Istanbul, Turkey.
| | - Nurdan Yildiz
- Department of Pediatric Nephrology, Marmara University School of Medicine, Istanbul, Turkey
| | - Harika Alpay
- Department of Pediatric Nephrology, Marmara University School of Medicine, Istanbul, Turkey
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11
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Cicek N, Yildiz N, Dasar TN, Gokce I, Alpay H. Cystic Renal Disease in Children: A Broad Spectrum from Simple Cyst to End Stage Renal Failure. Turk J Nephrol 2019. [DOI: 10.5152/turkjnephrol.2019.3240] [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: 11/22/2022]
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12
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Pinar-Erdem A, Kuru S, Urkmez ES, Sepet E, Gunes H, Yildiz N, Topcuoglu N, Kulekci G. Oral health status and its relation with medication and dental fear in children with attention-deficit hyperactivity disorder. Niger J Clin Pract 2018; 21:1132-1138. [PMID: 30156197 DOI: 10.4103/njcp.njcp_409_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objective The objective of this study was to determine the ora-dental health and its relation with medication and dental fear in a group of Turkish children with attention-deficit hyperactivity disorder (ADHD). Subjects and Methods The levels of dental fear of children were determined with The Dental Subscale of Children's Fear Survey Schedule (CFSS-DS). The oral and dental health evaluation was performed. This study included a total of 117 children aged between 6 and 15 years and they were examined under two groups as "ADHD" (n = 59) and "Control" (n = 58). Ora-dental health variables were compared between the groups and were also analyzed in accordance with dental fear and medication. Results ADHD children and the control group exhibited similar CFSS-DS scores (15-32). No significant differences existed in df(t)/df(s), DMF(T)/DMF(S), d/D values, and presence of the white spot lesions. ADHD children's Mutans streptococci and Lactobacillus quantities were found significantly higher than the control group. The incidence of parafunctional habits of the ADHD children was also found high. Conclusions ADHD children that were medicated exhibited similar dental caries prevalence and periodontal health status. Although ADHD group had similar dental-periodontal health status and dental fear level with the control group and using ADHD medicines did not make a significant effect on the ora-dental health parameters, the patients should be carefully followed up because they were categorized in high caries risk groups.
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Affiliation(s)
- A Pinar-Erdem
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - S Kuru
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - E S Urkmez
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - E Sepet
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - H Gunes
- Department of Child and Adolescent Psychiatry, Bakirkoy Training and Research Hospital for Mental Health and Neurological Disorders, Istanbul, Turkey
| | - N Yildiz
- Department of Clinical Psychology, Yedikule Surp Pirgiç Armenian Hospital, Istanbul, Turkey
| | - N Topcuoglu
- Department of Microbiology, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - G Kulekci
- Department of Microbiology, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
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13
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Emre T, Sobhiafshar U, Yildiz N, Tufan B, Yilmaz E, Ayhan M, Erkan E, Yerinde C. PO-113 Investigation of the role of IRF4 in melanoma cells. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.154] [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] Open
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14
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Cicek N, Yildiz N, Kadayifci EK, Gokce I, Alpay H. Invasive aspergillosis in a patient with end stage renal disease. Med Mycol Case Rep 2017; 18:12-14. [PMID: 28761803 PMCID: PMC5524294 DOI: 10.1016/j.mmcr.2017.06.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/24/2017] [Accepted: 06/30/2017] [Indexed: 11/21/2022] Open
Abstract
Invasive aspergillosis caused by A. Fumigatus, almost occurs in immunocompromised hosts and has a poor prognosis. We report a case of invasive Aspergillosis in a 15-year-old boy with ESRD. He was initially diagnosed as lobar pneumonia and peritonitis. When he complained for lower extremity weakness and had convulsions, a solid mass originated from right lung compresses the spinal cord and intracranial hemorrhagic abscesses were found on MRI. The biopsy specimen showed hypae of aspergillus-spp and he died on 12th day.
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Affiliation(s)
- Neslihan Cicek
- Marmara University School of Medicine, Department of Pediatric Nephrology, Istanbul, Turkey
| | - Nurdan Yildiz
- Marmara University School of Medicine, Department of Pediatric Nephrology, Istanbul, Turkey.,Marmara University School of Medicine, Department of Pediatric Infectious Disease, Istanbul, Turkey
| | - Eda Kepenekli Kadayifci
- Marmara University School of Medicine, Department of Pediatric Infectious Disease, Istanbul, Turkey
| | - Ibrahim Gokce
- Marmara University School of Medicine, Department of Pediatric Nephrology, Istanbul, Turkey.,Marmara University School of Medicine, Department of Pediatric Infectious Disease, Istanbul, Turkey
| | - Harika Alpay
- Marmara University School of Medicine, Department of Pediatric Nephrology, Istanbul, Turkey.,Marmara University School of Medicine, Department of Pediatric Infectious Disease, Istanbul, Turkey
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15
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Kapucu H, Yildiz N, Gönülşen R, Çalimli AÇ. Investigation of Benzoic Acid Adsorption on to ODTMA-Bentonite by Response Surface Optimization. ADSORPT SCI TECHNOL 2016. [DOI: 10.1260/026361702321104237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The adsorption of benzoic acid on to a modified bentonite (ODTMA-bentonite) was studied. ODTMA-bentonite was synthesized by the incorporation of a quaternary ammonium surfactant (octadecyltrimethylammonium bromide) on to Ç ankiri sodium bentonite (Ç Na-B) with a cation-exchange capacity of 85 mequiv/100 g clay. A 24 full factorial central composite experimental design followed by multi-stage Monte-Carlo optimization was used in designing the experiments and analyzing the results. This procedure limited the number of actual experiments performed whilst allowing for possible interactions between the four parameters studied. These parameters were temperature (20–40°C), agitation rate (30–170 rpm), the amount of organobentonite used (0.1–1.5 g) and the initial benzoic acid concentration (40–200 mg/l). Of these parameters, the amount of organobentonite and the temperature had significant effects in comparison with the agitation rate and initial benzoic acid concentration. To effect the maximum adsorption of benzoic acid on to ODTMA-bentonite, the optimum values for the tested variables over the selected ranges were as follows: initial concentration of benzoic acid = 200 mg/l, agitation rate = 170 rpm, amount of organobentonite = 1.5 g and temperature = 40°C. The coefficient of determination (R2) for the model employed was 0.99343 with a probability value of 9.44 × 10−14 (p-value < 0.01). This p-value indicates a very high significance for the regression model. The maximum adsorbed concentration of benzoic acid predicted by the equation (169.05 mg/l) agreed well with the value (163 mg/l) obtained from the experimental data measured under optimum conditions.
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Affiliation(s)
- H. Kapucu
- Pak Gida Üretim ve Pazarlama A.Ş., POB 149, 41001 İzmit, Kocaeli, Turkey
| | - N. Yildiz
- Department of Chemical Engineering, Faculty of Engineering, Ankara University, 06100 Tandoǧan-Ankara, Turkey
| | - R. Gönülşen
- Department of Chemical Engineering, Faculty of Engineering, Ankara University, 06100 Tandoǧan-Ankara, Turkey
| | - A. Ç Çalimli
- Department of Chemical Engineering, Faculty of Engineering, Ankara University, 06100 Tandoǧan-Ankara, Turkey
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16
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Abstract
Purpose/Aim of the study: The purpose of this study was to evaluate the interaction between Polycystic ovary syndrome (PCOS) and Meibomian gland dysfunction (MGD) and obesity, to reveal whether there is a correlation between the testosterone levels and body-mass index (BMI) levels and the dry-eye complaints of these patients. MATERIAL AND METHODS The study included 92 patients with PCOS and 52 healthy patients from March 2013 to March 2014. All patients underwent a physical examination, pelvic ultrasound, and clinical and biochemical tests, including free testosterone levels to confirm the diagnosis of PCOS. The BMIs of all subjects were recorded. In addition, the presence of posterior blepharitis, as an indicator of MGD, was recorded. All patients underwent the dry-eye tests including Schirmer 1 and tear film break-up time (BUT). Complaints of dry-eye of the patients were evaluated with the ocular surface disease index (OSDI) questionnaire. The scores of both groups were compared. RESULTS The presence of MGD was 72.82% in the PCOS group and 61.53% in the control group. There was no correlation between the testosterone levels and study parameters in both groups. BUT levels negatively correlated with BMI in subjects without PCOS (r = -0.520, p = 0.001), whereas positively correlated with MGD and OSDI scores (r = 0.610, p = 0.632; p = 0.001, p = 0.001; respectively). CONCLUSION Tear film instability due to MGD is common in PCOS and in subjects with high BMI. The MGD in PCOS patients is independent of the BMI.
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Affiliation(s)
- Gonen Baser
- a Ozel Egepol Hospital Eye Clinic , Izmir , Turkey
| | - Nurdan Yildiz
- b Department of Gynecology and Obstetrics , Sifa University Izmir , Turkey
| | - Mehmet Calan
- c Department of Endocrinology , Bozyaka Education and Investigation Hospital, Izmir , Turkey
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17
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Baris HE, Baris S, Karakoc-Aydiner E, Gokce I, Yildiz N, Cicekkoku D, Ogulur I, Ozen A, Alpay H, Barlan I. The effect of systemic corticosteroids on the innate and adaptive immune system in children with steroid responsive nephrotic syndrome. Eur J Pediatr 2016; 175:685-93. [PMID: 26833050 DOI: 10.1007/s00431-016-2694-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 09/05/2015] [Revised: 01/08/2016] [Accepted: 01/18/2016] [Indexed: 11/25/2022]
Abstract
UNLABELLED The severity and duration of immunosuppression caused by corticosteroids (CSs) usage have not been extensively studied. We aimed to investigate the effects of CSs on the various compartments of immune system in relation to timing of initiation and persistence of therapy. Pediatric patients with idiopathic nephrotic syndrome (NS) treated with 2 mg/kg/day prednisolone and healthy control (HC) were enrolled. Blood samples were drawn for immunologic analyses at baseline and at the first and second weeks and first, second, and third months of CS therapy in addition to first and second weeks and first, second, and third months of discontinuation. Fourteen patients (M/F, 7/7) between 1 and 8 years old were evaluated. Untreated NS exhibited high absolute lymphocyte count (ALC)(p = 0.010), absolute CD3(+) T cells (p = 0.020) and absolute CD8(+) T cells (p = 0.006) compared to HC. Suppression in ALC was observed and nadir value was noted at first month of therapy compared to baseline (p = 0.002). The CD4(+) (p = 0.036) and CD8(+) T cell (p = 0.013) counts decreased significantly at the first week of treatment compared to baseline. While baseline B cell counts was indifferent from HC, gradually increased in 2 weeks of CS initiation and decreased during the treatment with a statistical significance compared to HC (p = 0.010). However, after cessation of CS, B cell counts continued to decline and found to be significantly different than baseline at first week (p = 0.008) and at third month (p = 0.040). CONCLUSION Apart from baseline lymphocyte subset changing observed in untreated NS patients, our data implies that T cells were suppressed very early in the CS treatment. Interestingly, depressed B cell counts were detected later but persisted even after CS cessation. Due to early decrease in T cells, it would be beneficial to assume the patients as immunosuppressed at the very beginning of CS treatment to avoid infections. WHAT IS KNOWN • Corticosteroids (CSs) are widely used for a variety of diseases including nephrotic syndrome, which is related with complex immune disturbance including T and B cells dysfunctions. • CSs induce neutrophilic leukocytosis concomitant with lymphopenia and eosinopenia leading to immunosupression. What is New: • T cell subsets and proliferation are susceptible to CSs more than B cells; however, the reversibility is faster with dose reduction in CS. • The change of B cells and B cell subtypes (CD27 (+) memory) shows prolonged effect of CSs on B cells which may alter antibody production even after 3 months of CSs cessation.
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Affiliation(s)
- Hatice Ezgi Baris
- Research and Training Hospital, Division of Pediatric Allergy and Immunology, Marmara University, Mimar Sinan Cad. No: 41, 34890, Istanbul, Turkiye
| | - Safa Baris
- Research and Training Hospital, Division of Pediatric Allergy and Immunology, Marmara University, Mimar Sinan Cad. No: 41, 34890, Istanbul, Turkiye.
| | - Elif Karakoc-Aydiner
- Research and Training Hospital, Division of Pediatric Allergy and Immunology, Marmara University, Mimar Sinan Cad. No: 41, 34890, Istanbul, Turkiye
| | - Ibrahim Gokce
- Research and Training Hospital, Division of Pediatric Nephrology, Marmara University, Istanbul, Turkiye
| | - Nurdan Yildiz
- Research and Training Hospital, Division of Pediatric Nephrology, Marmara University, Istanbul, Turkiye
| | - Dilek Cicekkoku
- Research and Training Hospital, Division of Pediatric Allergy and Immunology, Marmara University, Mimar Sinan Cad. No: 41, 34890, Istanbul, Turkiye
| | - Ismail Ogulur
- Research and Training Hospital, Division of Pediatric Allergy and Immunology, Marmara University, Mimar Sinan Cad. No: 41, 34890, Istanbul, Turkiye
| | - Ahmet Ozen
- Research and Training Hospital, Division of Pediatric Allergy and Immunology, Marmara University, Mimar Sinan Cad. No: 41, 34890, Istanbul, Turkiye
| | - Harika Alpay
- Research and Training Hospital, Division of Pediatric Nephrology, Marmara University, Istanbul, Turkiye
| | - Isil Barlan
- Research and Training Hospital, Division of Pediatric Allergy and Immunology, Marmara University, Mimar Sinan Cad. No: 41, 34890, Istanbul, Turkiye
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18
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Saklamaz A, Calan M, Yilmaz O, Kume T, Temur M, Yildiz N, Kasap E, Genc M, Sarer Yurekli B, Unal Kocabas G. Polycystic ovary syndrome is associated with increased osteopontin levels. Eur J Endocrinol 2016; 174:415-23. [PMID: 26701868 DOI: 10.1530/eje-15-1074] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Accepted: 12/23/2015] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Osteopontin (OPN) is a multi-functional secreted glycoprotein that plays a crucial role in glucose metabolism and inflammatory process. Growing evidence suggests that there is a link between OPN and ovarian function. However, no such link has yet been found for OPN in polycystic ovary syndrome (PCOS). Our aim was to ascertain whether circulating OPN levels are altered in women with PCOS and to determine whether OPN levels differ between the follicular phase and mid-cycle of the menstrual cycle in eumenorrheic women. DESIGN AND METHODS In total, 150 women with PCOS and 150 age- and BMI-matched controls without PCOS were recruited for this prospective observational study. OPN levels were measured using ELISA. Metabolic parameters were also determined. RESULTS Circulating OPN levels were significantly elevated in PCOS women compared with controls (69.12±31.59 ng/ml vs 42.66±21.28 ng/ml; P<0.001). OPN levels were significantly higher at mid-cycle than in the follicular phase in eumenorrheic women. OPN was positively correlated with BMI, homeostasis model assessment of insulin resistance (HOMA-IR), free testosterone, and high sensitivity C-reactive protein (hs-CRP). Multivariate logistic regression analyses revealed that the odds ratio (OR) for PCOS was 3.64 for patients in the highest quartile of OPN compared with those in the lowest quartile (OR=3.64; 95% CI=2.42-5.57; P=0.011). Our findings indicate that BMI, HOMA-IR, hs-CRP, and free testosterone are independent factors influencing serum OPN levels and that OPN is an independent predictor for HOMA-IR. CONCLUSION PCOS is associated with increased OPN levels.
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Affiliation(s)
| | - Mehmet Calan
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, Sifa University School of Medicine, 35410 Izmir, TurkeyPCOS Research GroupDivision of Endocrinology and Metabolism, Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, 35170 Bozyaka, Izmir, TurkeyPCOS Research GroupDepartment of Obstetrics and Gynecology, Manisa Merkezefendi State Hospital, 45020 Merkezefendi, Manisa, TurkeyDepartment of Biochemistry and Clinical BiochemistryDokuz Eylul University Faculty of Medicine, 35340 Inciralti, Izmir, TurkeyDepartment of Obstetrics and GynecologySifa University School of Medicine, 35410 Izmir, TurkeyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Ege University Medical School, 35100 Bornova, Izmir, Turkey
| | - Ozgur Yilmaz
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, Sifa University School of Medicine, 35410 Izmir, TurkeyPCOS Research GroupDivision of Endocrinology and Metabolism, Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, 35170 Bozyaka, Izmir, TurkeyPCOS Research GroupDepartment of Obstetrics and Gynecology, Manisa Merkezefendi State Hospital, 45020 Merkezefendi, Manisa, TurkeyDepartment of Biochemistry and Clinical BiochemistryDokuz Eylul University Faculty of Medicine, 35340 Inciralti, Izmir, TurkeyDepartment of Obstetrics and GynecologySifa University School of Medicine, 35410 Izmir, TurkeyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Ege University Medical School, 35100 Bornova, Izmir, Turkey
| | - Tuncay Kume
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, Sifa University School of Medicine, 35410 Izmir, TurkeyPCOS Research GroupDivision of Endocrinology and Metabolism, Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, 35170 Bozyaka, Izmir, TurkeyPCOS Research GroupDepartment of Obstetrics and Gynecology, Manisa Merkezefendi State Hospital, 45020 Merkezefendi, Manisa, TurkeyDepartment of Biochemistry and Clinical BiochemistryDokuz Eylul University Faculty of Medicine, 35340 Inciralti, Izmir, TurkeyDepartment of Obstetrics and GynecologySifa University School of Medicine, 35410 Izmir, TurkeyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Ege University Medical School, 35100 Bornova, Izmir, Turkey
| | - Muzaffer Temur
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, Sifa University School of Medicine, 35410 Izmir, TurkeyPCOS Research GroupDivision of Endocrinology and Metabolism, Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, 35170 Bozyaka, Izmir, TurkeyPCOS Research GroupDepartment of Obstetrics and Gynecology, Manisa Merkezefendi State Hospital, 45020 Merkezefendi, Manisa, TurkeyDepartment of Biochemistry and Clinical BiochemistryDokuz Eylul University Faculty of Medicine, 35340 Inciralti, Izmir, TurkeyDepartment of Obstetrics and GynecologySifa University School of Medicine, 35410 Izmir, TurkeyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Ege University Medical School, 35100 Bornova, Izmir, Turkey
| | - Nurdan Yildiz
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, Sifa University School of Medicine, 35410 Izmir, TurkeyPCOS Research GroupDivision of Endocrinology and Metabolism, Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, 35170 Bozyaka, Izmir, TurkeyPCOS Research GroupDepartment of Obstetrics and Gynecology, Manisa Merkezefendi State Hospital, 45020 Merkezefendi, Manisa, TurkeyDepartment of Biochemistry and Clinical BiochemistryDokuz Eylul University Faculty of Medicine, 35340 Inciralti, Izmir, TurkeyDepartment of Obstetrics and GynecologySifa University School of Medicine, 35410 Izmir, TurkeyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Ege University Medical School, 35100 Bornova, Izmir, Turkey
| | - Esin Kasap
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, Sifa University School of Medicine, 35410 Izmir, TurkeyPCOS Research GroupDivision of Endocrinology and Metabolism, Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, 35170 Bozyaka, Izmir, TurkeyPCOS Research GroupDepartment of Obstetrics and Gynecology, Manisa Merkezefendi State Hospital, 45020 Merkezefendi, Manisa, TurkeyDepartment of Biochemistry and Clinical BiochemistryDokuz Eylul University Faculty of Medicine, 35340 Inciralti, Izmir, TurkeyDepartment of Obstetrics and GynecologySifa University School of Medicine, 35410 Izmir, TurkeyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Ege University Medical School, 35100 Bornova, Izmir, Turkey
| | - Mine Genc
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, Sifa University School of Medicine, 35410 Izmir, TurkeyPCOS Research GroupDivision of Endocrinology and Metabolism, Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, 35170 Bozyaka, Izmir, TurkeyPCOS Research GroupDepartment of Obstetrics and Gynecology, Manisa Merkezefendi State Hospital, 45020 Merkezefendi, Manisa, TurkeyDepartment of Biochemistry and Clinical BiochemistryDokuz Eylul University Faculty of Medicine, 35340 Inciralti, Izmir, TurkeyDepartment of Obstetrics and GynecologySifa University School of Medicine, 35410 Izmir, TurkeyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Ege University Medical School, 35100 Bornova, Izmir, Turkey
| | - Banu Sarer Yurekli
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, Sifa University School of Medicine, 35410 Izmir, TurkeyPCOS Research GroupDivision of Endocrinology and Metabolism, Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, 35170 Bozyaka, Izmir, TurkeyPCOS Research GroupDepartment of Obstetrics and Gynecology, Manisa Merkezefendi State Hospital, 45020 Merkezefendi, Manisa, TurkeyDepartment of Biochemistry and Clinical BiochemistryDokuz Eylul University Faculty of Medicine, 35340 Inciralti, Izmir, TurkeyDepartment of Obstetrics and GynecologySifa University School of Medicine, 35410 Izmir, TurkeyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Ege University Medical School, 35100 Bornova, Izmir, Turkey
| | - Gokcen Unal Kocabas
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, Sifa University School of Medicine, 35410 Izmir, TurkeyPCOS Research GroupDivision of Endocrinology and Metabolism, Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, 35170 Bozyaka, Izmir, TurkeyPCOS Research GroupDepartment of Obstetrics and Gynecology, Manisa Merkezefendi State Hospital, 45020 Merkezefendi, Manisa, TurkeyDepartment of Biochemistry and Clinical BiochemistryDokuz Eylul University Faculty of Medicine, 35340 Inciralti, Izmir, TurkeyDepartment of Obstetrics and GynecologySifa University School of Medicine, 35410 Izmir, TurkeyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Ege University Medical School, 35100 Bornova, Izmir, Turkey
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Kocazeybek B, Balcioglu I, Demirel O, Yildiz N, Yuksel P, saglam H, Habip Z, Kocazeybek E, Balcioglu Y, Kirpinar M. Anxiety levels of HIV-infected patients after learning their diagnosis: A preliminary study for the first time in Turkey. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.02.586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Güven S, Gökçe I, Gemici Ö, Çiçek Deniz N, Yildiz N, Alpay H. SP920PERSISTENT MICROSCOPIC HEMATURIA IN CHILDREN: CLINICAL AND HISTOPATHOLOGICAL FEATURES. Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv203.58] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shirzai A, Yildiz N, Biyikli N, Ustunsoy S, Benzer M, Alpay H. Is microalbuminuria a risk factor for hypertension in children with solitary kidney? Pediatr Nephrol 2014; 29:283-8. [PMID: 24217782 DOI: 10.1007/s00467-013-2641-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [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] [Received: 06/05/2012] [Revised: 06/03/2013] [Accepted: 06/17/2013] [Indexed: 11/27/2022]
Abstract
BACKGROUND The correlations between ambulatory blood pressure measurements (ABPM) and serum cystatin C (Cys C), serum creatinine (Cr), microalbumin (MA), and β2-microglobulin (β2-MG) levels in 24 h (24-h) urine were analyzed in children with solitary kidney (SK) and compared to healthy children. METHODS Fifty children with normal functioning SK and 25 controls were studied. The ABPM, serum Cys C, serum Cr, MA, and β2-MG levels in 24-h urine were measured in all children. Clinical symptoms and signs, laboratory results, urinary ultrasonography, voiding cystourethrography, and Dimercaptosuccinic acid (DMSA) scintigraphy results were recorded in the SK group. Four patients with Wilms' tumor and two with renal scarring were excluded from the study. RESULTS The mean ages of the SK group and controls were 9.6 ± 3.6 and 9.3 ± 3.3 years, respectively. The serum Cys C and Cr levels, 24-h urinary β2-MG and MA levels were similar in both groups (p > 0.05). However, 24-h urinary MA excretion was higher in patients living with SK more than 5 years (p = 0.01). Standard deviation scores of ABPM parameters showed no significant correlation with serum Cr, serum Cys C, MA, and β2-MG in 24-h urine of both groups. CONCLUSIONS Children with SK have increased 24-h urinary MA excretion in the long term, and need prolonged follow-up to detect early deterioration of renal function and to prevent end-organ damage later in life.
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Affiliation(s)
- Ayoub Shirzai
- Department of Pediatric Nephrology, Marmara University Medical Faculty, Istanbul, Turkey
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Silverwood RJ, Pierce M, Hardy R, Sattar N, Whincup P, Ferro C, Savage C, Kuh D, Nitsch D, Alpay H, Yildiz N, Altuntas U, Cicek Deniz N, Gokce I. Congenital anomalies of kidney and urinary tract. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Okamoto S, Sakama T, Nakamura S, Niimura F, Sahin S, Ertan P, Evrengul H, Horasan G, Dede B, Berdeli A, Yildiz N, Cicek Deniz N, Asadov R, Yucelten D, Alpay H, Prado G, Schoeneman M, Mongia A, Paudyal B, Feygina V, Norin A, Hochman D, Tawadrous H, Bansilal V, Topaloglu R, Gulhan B, Bilginer Y, Celebi Tayfur A, Yildiz C, Ozaltin F, Duzova A, Ozen S, Aki T, Besbas N, Komaki F, Hamasaki Y, Ishikura K, Hamada R, Sakai T, Hataya H, Ogata K, Fukuzawa R, Ando T, Honda M, Malke A, Silska-Dittmar M, Soltysiak J, Blumczynski A, Ostalska-Nowicka D, Zachwieja J, Tabel Y, Oncul M, Elmas A, Kavaz A, Ozcakar ZB, Bulum B, Ekim M, Yalcinkaya F, Prikhodina L, Turpitko O, Dlin V, Gheith O, Alotaibi T, Nampoory N, Mosaad A, Halim M, Saied T, Abou Ateya H, Adel H, Mozarei I, Neir P, Hamasaki Y, Uemura O, Ishikura K, Ito S, Wada N, Hattori M, Ohashi Y, Tanaka R, Nakanishi K, Kaneko T, Honda M, Golovachova V, Odinets Y, Laszki-Szczachor K, Polak-Jonkisz D, Sobieszczanska M, Rusiecki L, Zwolinska D, Ninchoji T, Kaitoh H, Matsunoshita N, Nozu K, Nakanishi K, Yoshikawa N, Iijima K, Maglalang-Reed OM, Elises JS, Zamora MNV, Pasco P, Arejola-Tan A, Alparslan C, Dogan SM, Kose E, Elmas C, Kilinc S, Arslan N, Kebabci E, Karaca C, Yavascan O, Aksu N, Minson S, Munoz M, Vergara I, Mraz M, Vaughan R, Rees L, Olsburgh J, Calder F, Shroff R, Zaicova N, Kavaz A, Ozcakar ZB, Bulum B, Ekim M, Yalcinkaya F, Lavrenchuk O, Viktoria D, Savchenko V, Bagdasarova I, Doyon A, Bayazit A, Canpolat N, Duzova A, Kracht D, Litwin M, Ranchin B, Shroff R, Sozeri B, Wuhl E, Zeller R, Melk A, Querfeld U, Schaefer F, Sinha MD, Turner C, Booth CJ, Goldsmith DJA, Simpson JM. Paediatric nephrology - A. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft124] [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: 11/12/2022] Open
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Yildiz N, Memisoglu A, Benzer M, Altuntaş U, Alpay H. Can peritoneal dialysis be used in preterm infants with congenital diaphragmatic hernia? J Matern Fetal Neonatal Med 2013; 26:943-5. [DOI: 10.3109/14767058.2013.766689] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Yildiz N, Erguven M, Yildiz M, Ozdogan T, Turhan P. Acute peritoneal dialysis in neonates with acute kidney injury and hypernatremic dehydration. Perit Dial Int 2012; 33:290-6. [PMID: 23123669 DOI: 10.3747/pdi.2011.00211] [Citation(s) in RCA: 12] [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] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE We aimed to evaluate the efficacy of acute peritoneal dialysis (PD) and clinical outcomes in neonates with acute kidney injury (AKI) and hypernatremic dehydration. ♢ METHODS The medical records of 15 neonates with AKI and hypernatremic dehydration who were treated with acute PD were reviewed. The diagnoses were AKI with hypernatremic dehydration with or without sepsis in 13 patients and AKI with hypernatremia and congenital nephropathy in 2 patients. The main indications for PD were AKI with some combination of oligoanuria, azotemia, hyperuricemia, and metabolic acidosis unresponsive to initial intensive medical treatment. ♢ RESULTS The mean age of the patients at dialysis initiation was 11.9 ± 9 days, and the mean duration of PD was 6.36 ± 4.8 days. In 7 patients (46.7%), hypotension required the use of vasopressors, and in 6 patients (40%), mechanical ventilation was required. Peritoneal dialysis-related complications occurred in 7 patients (46.7%), the most common being catheter malfunction (n = 6). Four episodes of peritonitis occurred in the 15 patients (26.7%), 2 episodes in patients with congenital renal disease and 2 episodes in patients with sepsis and multiorgan failure, who did not survive. Congenital renal disease, septicemia, and the need for mechanical ventilation were important factors influencing patient survival. All patients with no pre-existing renal disease or sepsis recovered their renal function and survived. ♢ CONCLUSIONS In neonates with AKI and hypernatremic dehydration, PD is safe and successful, and in patients without congenital renal disease or sepsis, the prognosis is good. Peritoneal dialysis should be the treatment of choice in neonates with AKI and hypernatremic dehydration who do not respond to appropriate medical treatment.
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Affiliation(s)
- Nurdan Yildiz
- Department of Pediatric Nephrology, Göztepe Teaching and Research Hospital, Istanbul, Turkey.
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Yildiz N, Pala A. Effects of small-diameter silver nanoparticles on microbial load in cow milk. J Dairy Sci 2012; 95:1119-27. [DOI: 10.3168/jds.2011-4817] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Accepted: 10/30/2011] [Indexed: 11/19/2022]
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Bakkaloglu SA, Saygili A, Sever L, Aksu N, Noyan A, Akman S, Ekim M, Doganay B, Yildiz N, Akalin F, Caliskan S, Kara OD, Duzova A, Soylu A, Atalay S. Impact of peritoneal transport characteristics on cardiac function in paediatric peritoneal dialysis patients: a Turkish Pediatric Peritoneal Dialysis Study Group (TUPEPD) report. Nephrol Dial Transplant 2010; 25:2296-303. [PMID: 20139065 DOI: 10.1093/ndt/gfq027] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The peritoneal equilibration test (PET) is recommended in paediatric peritoneal dialysis (PD) patients to assist prescription management. Despite contradictory reports, high transporter status is associated with reduced survival rate in adults. Since cardiac disease is one of the main causes of mortality in paediatric PD patients, we aimed to evaluate whether transport features have any effect on biochemical data and cardiac function in this group. METHODS One hundred and ten PD patients (13 +/- 5 years, PD vintage: 31 +/- 27 months) were enrolled into the study. Four-hour dialysate/plasma creatinine ratio was used for differentiating PET groups. Thirty-eight patients were high transporters, 29 were high-average transporters and 43 were low-average/low transporters. Echocardiography was performed in all subjects. RESULTS Age, PD vintage, dialysate glucose concentration, ultrafiltration volume, urine volume and blood pressure levels were similar in all PET groups. No biochemical or echocardiographic data (ejection fraction, fractional shortening, left ventricular mass index, myocardial performance index, power Doppler E/tissue Doppler E ratio reflecting diastolic function) were different among PET groups except lower albumin (P = 0.025) levels in high transporters and higher high-sensitivity C-reactive protein (P = 0.026) levels in high and high-average transporters compared to other transport groups. CONCLUSIONS Cardiac structural and functional abnormalities are highly prevalent among paediatric PD patients. Transport rates did not have a significant effect on biochemical parameters or cardiac structural/functional parameters. It might be suggested that being a high transporter does not provide a disadvantage in terms of atherogenic tendency and cardiac disease in paediatric PD patients. Oligoanuria, anaemia and hypertension were independent predictors of cardiac disease.
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Yildiz N, Diedrich T, Knepel W. Nuclear protein binding and functional activity of a variant insulin gene found in non-insulin-dependent diabetes mellitus. Exp Clin Endocrinol Diabetes 2009; 104:218-27. [PMID: 8817239 DOI: 10.1055/s-0029-1211446] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In a subset of patients with non-insulin-dependent diabetes mellitus an 8-base pair (bp) repeat was found from -322 to -315 in the 5'-flanking region of the insulin gene. This 8-bp repeat is inserted into a sequence that is highly homologous to a sequence motif, called PISCES (pancreatic islet cell-specific enhancer sequences), found within cell-specific enhancer elements of the rat insulin I (Ins-E1, from -332 to -285), rat glucagon (Glu-G3) and rat somatostatin (SMS-UE) genes. The PISCES motif confers pancreatic islet-specific activity and is recognized by an islet-specific transcription factor (PISCES-BP). The consequences on functional activity and on protein binding of the 8-bp repeat sequence in the human insulin promoter was investigated. When fused to a reporter gene and transiently transfected into an insulin-producing islet cell line, the 8-bp repeat decreased basal transcriptional activity of the human insulin promoter (from -366 to +42) whereas the induction of promoter activity by cAMP was unaffected. The isolated rat Ins-E1 element was sufficient to confer basal transcriptional activity to a minimal promoter; the corresponding fragments of the normal and variant human insulin genes (from -329 to -288), however, were not. Using nuclear extracts in an electrophoretic mobility shift assay, it was found that PISCES-BP recognizes rat Ins-E1, but PISCES-BP binding to the corresponding normal and variant human insulin promoter fragments was not detectable and weak, respectively. However, a nuclear protein was found that binds to the variant but not normal human sequence. These data suggest that the 8-bp repeat in the variant human insulin promoter found in patients with non-insulin-dependent diabetes mellitus allows the binding of a nuclear protein that interferes with promoter function.
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Affiliation(s)
- N Yildiz
- Department of Biochemical Pharmacology, University of Göttingen, Germany
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Bakkaloglu SA, Saygili A, Sever L, Noyan A, Akman S, Ekim M, Aksu N, Doganay B, Yildiz N, Duzova A, Soylu A, Alpay H, Sonmez F, Civilibal M, Erdem S, Kardelen F. Assessment of cardiovascular risk in paediatric peritoneal dialysis patients: a Turkish Pediatric Peritoneal Dialysis Study Group (TUPEPD) report. Nephrol Dial Transplant 2009; 24:3525-32. [DOI: 10.1093/ndt/gfp297] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Soylemezoglu O, Ozkaya O, Ozen S, Bakkaloglu A, Dusunsel R, Peru H, Cetinyurek A, Yildiz N, Donmez O, Buyan N, Mir S, Arisoy N, Gur-Guven A, Alpay H, Ekim M, Aksu N, Soylu A, Gok F, Poyrazoglu H, Sonmez F. Henoch-Schönlein nephritis: a nationwide study. Nephron Clin Pract 2009; 112:c199-204. [PMID: 19439991 DOI: 10.1159/000218109] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2008] [Accepted: 11/24/2008] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIM The aim of this retrospective study was to evaluate the presentation, clinical and pathological manifestations and outcome of the Henoch-Schönlein purpura (HSP) nephritis in children. METHODS Clinical and laboratory data of 443 children with HSP nephritis aged between 3 and 16 years from 16 pediatric nephrology reference centers were analyzed retrospectively. The biopsy findings were graded according to the classification developed by the International Study of Kidney Disease in Children (ISKDC). RESULTS Renal biopsy was performed in 179 of the patients with HSP nephritis. The most common presenting clinical finding in patients who were biopsied was nephrotic range proteinuria (25%) which was followed by nephritic-nephrotic syndrome (23.5%). The biopsy findings according to the ISKDC were as follows: class I: 8.3%; II: 44.1%; III: 36.3%; IV: 6.7%; V: 3.3%; VI: 1.1%. All of the patients who developed end-stage renal disease had nephritic-nephrotic syndrome at presentation. Of 443 patients, 87.2% had a favorable outcome and 12.8% had an unfavorable outcome. The overall percentage of children who developed end-stage renal disease at follow-up was 1.1%. Logistic regression analysis did not show any association of initial symptoms and histology with outcome. CONCLUSION In the presented cohort, the presence of crescents in the first biopsy or presenting clinical findings did not seem to predict the outcome of HSP nephritis in children. We conclude that children with HSP nephritis even with isolated microscopic hematuria and/or mild proteinuria should be followed closely.
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Affiliation(s)
- O Soylemezoglu
- Gazi University, Department of Pediatric Nephrology, Ankara, Turkey
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Ertaş M, Baykan B, Tuncel D, Gökçe M, Gökçay F, Sirin H, Deniz O, Oztürk V, Idiman F, Karli N, Zarifoğlu M, Yildiz N, Siva A, Saip S, Göksan B, Ak F, Aluçlu U, Duman T, Melek IM, Bulut S, Berilgen S. A comparative ID migraine screener study in ophthalmology, ENT and neurology out-patient clinics. Cephalalgia 2008; 29:68-75. [PMID: 18771489 DOI: 10.1111/j.1468-2982.2008.01702.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Migraine is more likely to be misdiagnosed in patients with comorbid diseases. Not only primary care physicians, but also specialists might misdiagnose it due to the lack of diagnostic criteria awareness. The ID migraine test is a reliable screening instrument that may facilitate and accelerate migraine recognition. This study aimed to compare the prevalence and characteristics of migraine in a large sample of patients admitted to clinics of ophthalmology (OC), ear, nose and throat diseases (ENTC) and neurology (NC), as well as to validate the use of the ID migraine test in OC and ENTC settings. This was a multicentre (11 cites) study of out-patients admitting either to NC, ENTC or OC of the study sites during five consecutive working days within 1 week. From each of the clinics, 100 patients were planned to be recruited. All recruited patients were interviewed and those having a headache complaint received an ID migraine test and were examined for headache diagnosis by a neurologist, blinded to the ID migraine test result. A total of 2625 subjects were recruited. Only 1.3% of OC patients and 5.4% of ENTC patients have been admitted with a primary complaint of headache, whereas the percentage of NC patients suffering from headache was 37.6%. Whereas 138 patients (19.3%) in OC, 154 (17.3%) in ENTC and 347 (34%) in NC were found to be ID migraine test positive, 149 patients (20.8%) in OC, 142 (16%) in ENTC and 338 (33.1%) in NC were diagnosed with migraine. The sensitivity, specificity, and positive and negative predictive ratios of the ID migraine test were found to be similar in all clinics. An important fraction of the patients admitted to NC, as well as to OC and ENTC, for headache and/or other complaints were found out to have migraine by means of a simple screening test. This study validated the ID migraine test as a sensitive and specific tool in OC and ENTC, encouraging its use as a screening instrument.
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Affiliation(s)
- M Ertaş
- Departments of Neurology, Medical Faculties of Istanbul University, Istanbul, Turkey
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Taspinar V, Sacan O, Yildiz N, Postaci A, Dikmen B. 534. New Loss of Resistance Technique Whether Increase or Decrease State Trait Anxiety Inventory(STAI) Levels: Preliminary Result. Reg Anesth Pain Med 2008. [DOI: 10.1136/rapm-00115550-200809001-00107] [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: 11/03/2022]
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Yildiz SK, Yildiz N, Korkmaz B, Altunrende B, Gezici AR, Alkoy S. Sympathetic Skin Responses From Frontal Region in Migraine Headache: A Pilot Study. Cephalalgia 2008; 28:696-704. [DOI: 10.1111/j.1468-2982.2008.01574.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Frontal sympathetic skin responses (F-SSRs) were recorded to investigate sympathetic nervous system activity in migraine headache (MH). Thirty-five patients with unilateral MH and 10 healthy volunteers were studied by evoking bilateral F-SSRs with electrical stimulation of the median nerve in attack, post-attack and interictal periods. The mean latencies were longer and the maximum amplitudes were smaller on the symptomatic side compared with the asymptomatic side ( P < 0.05 for both amplitude and latency) in attack and in interictal periods. In five patients, F-SSRs were absent bilaterally, in four patients the responses were absent only on the symptomatic side during the attack period. In the post-attack period, F-SSRs on the symptomatic side had higher amplitudes and shorter latencies compared with the asymptomatic side ( P < 0.01 for both amplitude and latency). There is an asymmetric sympathetic hypofunction on the symptomatic side in attack and interictal periods, whereas there is a hyperfunction in the post-attack period.
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Affiliation(s)
- SK Yildiz
- Department of Neurology, Izzet Baysal Medical Faculty, Abant Izzet Baysal University, Bolu, Turkey
| | - N Yildiz
- Department of Neurology, Izzet Baysal Medical Faculty, Abant Izzet Baysal University, Bolu, Turkey
| | - B Korkmaz
- Department of Neurology, Izzet Baysal Medical Faculty, Abant Izzet Baysal University, Bolu, Turkey
| | - B Altunrende
- Department of Neurology, Izzet Baysal Medical Faculty, Abant Izzet Baysal University, Bolu, Turkey
| | - AR Gezici
- Department of Neurosurgery, Izzet Baysal Medical Faculty, Abant Izzet Baysal University, Bolu, Turkey
| | - S Alkoy
- Department of Public Health, Izzet Baysal Medical Faculty, Abant Izzet Baysal University, Bolu, Turkey
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Kucuk O, Kahraman A, Kurt I, Yildiz N, Onmaz AC. A combination of zinc and pyridoxine supplementation to the diet of laying hens improves performance and egg quality. Biol Trace Elem Res 2008; 126:165-75. [PMID: 18719859 DOI: 10.1007/s12011-008-8190-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2008] [Accepted: 06/23/2008] [Indexed: 10/21/2022]
Abstract
The objective of this study was to investigate whether zinc, along with pyridoxine, is effective in improving performance and egg quality of laying hens. One hundred and twenty, 28-week-old Hy-Line laying hens were assigned to four treatment groups, 30 hens each. The birds were fed a basal diet or the basal diet supplemented with either 30 mg of zinc/kg of diet, 8 mg of pyridoxine/kg of diet, or 30 mg of zinc plus 8 mg of pyridoxine/kg of diet. Feed conversion (P < 0.01) and egg production (P < 0.01) improved most when both zinc and pyridoxine were supplemented to the diet. Eggshell weights were also greatest (P < 0.01) when the diet was supplemented with both pyridoxine and zinc. Egg-shape index was, however, greatest with zinc-supplemented diet (P < 0.004). Haugh unit was greatest in eggs of hens fed a diet supplemented with both zinc and pyridoxine (P < 0.01). Dietary zinc and pyridoxine supplementations together increased plasma calcium and phosphorous concentrations (P < 0.002). The results of the present study suggested that zinc (30 ppm) and pyridoxine (8 ppm) supplements, when used together, are recommended in terms of a better performance and egg quality in laying hens.
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Affiliation(s)
- O Kucuk
- Department of Animal Nutrition and Nutritional Diseases, Erciyes University School of Veterinary Medicine, Kayseri 38090, Turkey.
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Yildiz S, Bademkiran F, Yildiz N, Aydogdu I, Uludag B, Ertekin C. Facial motor cortex plasticity in patients with unilateral peripheral facial paralysis. NeuroRehabilitation 2007. [DOI: 10.3233/nre-2007-22209] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- S. Yildiz
- Department of Clinical Neurophysiology, Medical School Hospital, Ege University, Izmir, Turkey
- Department of Neurology, Medical School Hospital, Abant Izzet Baysal University, Bolu, Turkey
| | - F. Bademkiran
- Department of Clinical Neurophysiology, Medical School Hospital, Ege University, Izmir, Turkey
- Department of Neurology, Medical School Hospital, Ege University, Izmir, Turkey
| | - N. Yildiz
- Department of Clinical Neurophysiology, Medical School Hospital, Ege University, Izmir, Turkey
- Department of Neurology, Medical School Hospital, Abant Izzet Baysal University, Bolu, Turkey
| | - I. Aydogdu
- Department of Clinical Neurophysiology, Medical School Hospital, Ege University, Izmir, Turkey
- Department of Neurology, Medical School Hospital, Ege University, Izmir, Turkey
| | - B. Uludag
- Department of Clinical Neurophysiology, Medical School Hospital, Ege University, Izmir, Turkey
- Department of Neurology, Medical School Hospital, Ege University, Izmir, Turkey
| | - C. Ertekin
- Department of Clinical Neurophysiology, Medical School Hospital, Ege University, Izmir, Turkey
- Department of Neurology, Medical School Hospital, Ege University, Izmir, Turkey
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Yildiz S, Bademkiran F, Yildiz N, Aydogdu I, Uludag B, Ertekin C. Facial motor cortex plasticity in patients with unilateral peripheral facial paralysis. NeuroRehabilitation 2007; 22:133-40. [PMID: 17656839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Hand motor representation area expands towards the area of the perioral facial motor cortex in patients with peripheral facial paralysis (PFP) and in hemifacial spasm cases treated with botulinum toxin. In this current study, we aimed to investigate the changes both in the ipsilateral and contralateral facial motor cortex areas in patients with PFP with transcranial magnetic stimulation (TMS). Thirty healthy individuals and 41 patients with unilateral PFP with partial or total axonal degeneration participated in this study. Motor evoked potentials (MEPs) of perioral muscles elicited by TMS of the intracranial portion of the facial nerve and motor cortex, were recorded. TMS was delivered through a figure-of-eight coil. Mapping of the cortical representation of perioral muscles were also studied in 13 of 41 patients and in 10 of control subjects. Mean amplitude of the intact perioral MEPs elicited by the ipsilateral hemisphere TMS, was significantly higher in patients than the control subjects. There was also a mild enlargement of the mean cortical representation area of intact perioral muscles on both hemispheres though it was not significant. We have concluded that there was a cortical reorganization in the hemisphere contralateral to the paralytic side resulting in an increase at corticofugal output related to intact perioral muscles.
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Affiliation(s)
- S Yildiz
- Department of Clinical Neurophysiology, Medical School Hospital, Ege University, Izmir, Turkey.
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Ortaç E, Ozkaya O, Saraymen R, Yildiz N, Bedir A, Buyan N, Bek K, Okuyucu A, Baysal K. Low hair selenium and plasma glutathione peroxidase in children with chronic renal failure. Pediatr Nephrol 2006; 21:1739-45. [PMID: 16937131 DOI: 10.1007/s00467-006-0245-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2006] [Revised: 05/29/2006] [Accepted: 05/30/2006] [Indexed: 11/30/2022]
Abstract
Selenium (Se) is a trace element that incorporates into the selenoenzyme glutathione peroxidase (GSH-Px). There are conflicting results regarding the Se levels and activity of GSH-Px in adult uremic patients. The aim of this study was to determine (1) the hair Se status, (2) the possible relation between the hair Se status and the antioxidant enzyme, GSH-Px, and (3) the influence of different treatment procedures on hair Se status and GSH-Px activity in children with CRI, those treated conservatively and those on HD and on CAPD. Ninety-three patients, including 32 patients with CRI, treated conservatively, 42 PD patients, 19 HD patients and 34 healthy children were enrolled in the study. The hair Se level was measured by the atomic absorption spectrophotometer method. Plasma GSH-Px activity was determined using a Randox test combination (RANSEL). Hair Se levels were significantly lower in the CRI, CAPD, and HD groups when compared to the control group (P=0.001, P=0.001, and P=0.001, respectively). Plasma GSH-Px activity was significantly lower in the CRI, CAPD, and HD groups when compared to the control group (P=0.001, P=0.001, and P=0.001, respectively). Plasma GSH-Px activity correlated with the GFR in patients with CRI and the control group (P=0.000; r(2)=0.60). There was no correlation between plasma GSH-Px and hair Se levels in the patient and control groups. These results revealed a decreased hair Se level and impaired antioxidative capacity in children with CRI on CAPD and HD. The lack of any relation between plasma GSH-Px and hair Se suggests that plasma GSH-Px is not a good marker of Se stores.
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Affiliation(s)
- Erol Ortaç
- Department of Pediatric Nephrology, Ondokuz Mayis University Faculty of Medicine, Samsun, Turkey
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Biyikli NK, Alpay H, Yildiz N, Agachan B, Ergen A, Zeybek U, Bozkurt N, Ispir T. Paraoxonase 1 192 and 55 polymorphisms in nephrotic children. Pediatr Nephrol 2006; 21:649-54. [PMID: 16565923 DOI: 10.1007/s00467-006-0073-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2005] [Revised: 12/23/2005] [Accepted: 12/26/2005] [Indexed: 10/24/2022]
Abstract
Human paraoxonase 1 (PON1) is a serum enzyme related to high-density lipoprotein which has a major role in preventing oxidative modification of low-density lipoprotein. Due to its amino acid substitution PON1 has two genetic polymorphisms. These polymorphisms are characterized by the location of glutamine (A genotype) and arginine (B genotype) at position 192, and leucine (L genotype) and methionine (M genotype) at position 55. Hyperlipidemia and increased lipid oxidation in nephrotic syndrome may lead to glomerulosclerosis and progression of the glomerular disease. In this study we aimed to investigate PON1 192 and PON1 55 polymorphisms in children with focal segmental glomerulosclerosis (FSGS) and control subjects. The study included 25 children with biopsy-proven FSGS and 30 healthy controls. We demonstrated a statistically significant difference between FSGS patients and control subjects with respect to the distribution of the PON1 polymorphism. The AA genotype was less frequent and the AB+BB genotype was more frequent in FSGS patients than in controls (48 versus 73% for AA genotype and 52 versus 27% for AB+BB genotype, p<0.05). Distributions of PON1 55 genotypes of FSGS and control subjects were also statistically different (76 versus 43% for LL genotype and 24 versus 57% for LM+MM genotype, p<0.05) (case-control study, dominant model, Fisher's exact test). The distributions of both genotypes in subgroups of FSGS (stable renal function versus declining renal function) were not statistically different. We conclude in this preliminary study that presence of B allele and/or L allele may be risk factors for the development of FSGS in children.
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Affiliation(s)
- Nese Karaaslan Biyikli
- Department of Pediatric Nephrology, Marmara University School of Medicine, Tophanelioglu cd, No: 13-15, 34660, Altunizade, Istanbul, Turkey.
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Abstract
The few electrophysiologic studies of the cremasteric muscle (CM) have mainly been restricted to the cremaster reflex with no reference to central and peripheral nerve conduction to the muscle, probably for technical reasons.Twenty-six normal adult male volunteers were studied by transcranial magnetic cortical stimulation (TMS) and stimulation of thoracolumbar roots. The genitofemoral nerve (GFN) was stimulated electrically at the anterior superior iliac spine and a needle electrode was inserted into the CM for conduction studies. The motor latency to the CM from the cortical TMS ranged from 20 to 33 ms among the subjects (25.8 +/- 2.9 ms, mean +/- SD). Magnetic stimulation of the lumbar roots produced a motor response of the CM within 9.6 +/- 1.9 ms (range, 6-15). The central motor conduction time to the CM was 16.5 +/- 2.8 ms (range, 10-21). Stimulation of the GFN produced a compound muscle action potential with a mean value of 6.4 +/- 1.8 (range, 4-10) ms in 23 of the 26 cases. Thus, central motor nerve fibers to the CM motor neurons exist, and there may be a representation area for the CM in the cerebral cortex. The GFN motor conduction time to the CM may have clinical utility, such as in the evaluation of the groin pain due to surgical procedures in the lower abdomen.
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Affiliation(s)
- C Ertekin
- Department of Neurology, Ege University, Medical School Hospital, Bornova, Izmir, Turkey.
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Yildiz N, Yildiz S, Ertekin C, Aydoğdu I, Uludag B. Changes in the perioral muscle responses to cortical TMS induced by decrease of sensory input and electrical stimulation to lower facial region. Clin Neurophysiol 2004; 115:2343-9. [PMID: 15351377 DOI: 10.1016/j.clinph.2004.04.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2004] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To determine the changes in the motor cortex due to repetitive electrical stimulation and cutaneous anesthesia in lower facial region. METHODS A total of 11 subjects participated in the study of repetitive electrical stimulation, and 10 other subjects in the study of lower facial anesthesia. Facial nerve root and face associated cortical MEPs by transcranial magnetic stimulation (eight-shaped coil) were recorded from perioral muscles pre- and post- electrical stimulation and lower facial anesthesia. Cheek near to the corner of the mouth was transcutaneously stimulated by bipolar surface electrode giving repetitive electrical shocks at 5 Hz. Five percent lidocain/prilocain local anesthetic cream was applied to left or right lip-cheek region. RESULTS There was no significant change in perioral MEP responses after 10-30 min of 5 Hz electrical stimulation. We found a significant increase of amplitude in cortical MEP recordings during lower facial anesthesia especially in cases of cortical magnetic stimulations ipsilateral and contralateral to the anaesthetized side and in perioral recordings contralateral to the anaesthetized side. CONCLUSIONS The present study demonstrates that topical anesthesia to the lower facial region leads to cortical modulation and fast plastic changes in both hemispheres that are directed to the normal side.
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Affiliation(s)
- N Yildiz
- Department of Clinical Neurophysiology, Ege University, Medical School Hospital, Izmir, Turkey.
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Abstract
OBJECTIVE To clarify the optimum trace count for jitter calculation. MATERIALS AND METHODS Single-fiber electromyography was performed during voluntary contraction (VC-SFEMG) of extensor digitorum muscle in six healthy and five myasthenic subjects. Twenty single-fiber action potential (SFAP) pairs were recorded from each subject. For each pair, 100 consecutive traces were recorded and stored for off-line analysis. Ten different jitters were calculated in 10 consecutive steps for each SFAP pair by increasing the number of traces included to analysis (from 10 to 100). The jitter calculated in each step was compared with that calculated from 100 traces. RESULTS Sixty was the optimum number of trace count for both myasthenics and normal controls. Using less than 60 traces for jitter calculation revealed lower values. CONCLUSION Jitter calculation should be performed from at least 60 traces in VC-SFEMG. Less numbers yield lower jitter and may cause diagnostic error.
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Affiliation(s)
- M B Baslo
- Department of Neurology, Istanbul University, Istanbul Faculty of Medicine, Capa, Istanbul, 34390, Turkey.
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Abstract
Two cases with macroscopic hematuria as complication of acute mumps infection is reported. The patients have neither been vaccinated against mumps nor had mumps infection earlier. Macroscopic hematuria resolved spontaneously and renal functions did not deteriorate in both the patients. Although mumps has a benign course, mild and rarely severe renal involvement may occur. Therefore, renal functions in patients with hematuria and mumps should be followed closely.
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Affiliation(s)
- Nurdan Yildiz
- Department of Pediatrics, Social Security Göztepe Teaching Hospital, Istanbul, Turkey.
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Abstract
We have studied serological and clinical response to live, attenuated varicella zoster virus (VZV) vaccine (Varilrix, SmithKline Beecham) in 20 patients with steroid-sensitive nephrotic syndrome (SSNS) in remission and 22 normal controls who had no history of varicella and no detectable antibody to VZV. Nephrotic patients included 15 boys and 5 girls, with a mean age of 4.7 years (range 2-11.4 years). The controls were healthy age-matched children (13 girls and 9 boys). Seventeen patients with SSNS (85%) and 19 healthy controls (86%) seroconverted 8 weeks after vaccination. One patient with SSNS had a relapse 20 days after vaccination, and 1 child in the control group had a rash. Two years after vaccination, antibodies to VZV were detected in 12 of 17 responders, 2 of 3 non-responders, and 13 of 22 controls. Within 2 years of vaccination, 3 of the vaccine responder children with SSNS had a mild varicella infection. Two responder and 1 non-responder nephrotic children and 9 controls were lost to long-term follow-up. Our results show that immunization with a single dose of VZV vaccine is safe and effective in children with SSNS in remission.
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Affiliation(s)
- Harika Alpay
- Department of Pediatric Nephrology, Marmara University, Faculty of Medicine, Istanbul, Turkey
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Abstract
We used a concentric needle electrode (CNE) with 2 kHZ low-cut filter and a single fiber electrode (SFE) in the same subjects for neuromuscular jitter measurement in the extensor digitorum communis (EDC) and orbicularis oculi (OOc) muscles. At the same session, 20 jitter values were obtained from each subject with each electrode. For EDC (during voluntary contraction), mean jitter values with SFE and CNE were 23.4 +/- 8 micros and 23.3 +/- 8 micros in 10 normals; and 56.8 +/- 28 micros and 57.4 +/- 33 micros in 10 myasthenics. For OOc (during electrical stimulation), mean jitter values with SFE and CNE were 17.9 +/- 5 micros and 16.3 +/- 4 micros in 11 normal subjects, and 41.2 +/- 29 micros and 36.7 +/- 27 micros in 10 myasthenics. For both muscles, the numbers of individual abnormal jitter values with SFE and CNE were highly comparable. Both needles labeled the same patients as having "normal" or "abnormal" neuromuscular transmission. CNE may be an alternative to SFE in neuromuscular jitter analysis.
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Affiliation(s)
- M Ertaş
- Department of Neurology and Electrodiagnostic Neurology, Istanbul University, Faculty of Medicine, Capa, Istanbul 34390, Turkey.
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Yildiz M, Arslanoglu I, Yildiz N, Nartop F, Isik K, Isguven P. Effects of growth hormone replacement therapy on lipids, lipoproteins and apolipoproteins: is the increased apolipoprotein A-1/B ratio the only benefit? Pediatr Int 2000; 42:151-4. [PMID: 10804730 DOI: 10.1046/j.1442-200x.2000.01193.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND The aim of the present study was to investigate the controversial role of growth hormone (GH) therapy in lipid regulation. METHODS We studied serum levels of cholesterol and subgroups, triglyceride and apolipoprotein A-1 and B in 41 GH-deficient children (with subgroups of untreated and short- and long-term treated subjects) and 20 healthy controls. RESULTS Cholesterol and low-density lipoprotein cholesterol levels (in mmol/L) were found to be 4.92 +/- 1.34 and 3.02 +/- 1.58 in untreated, 4.15 +/- 0.72 and 2.46 +/- 0.65 in short-term (3 month) treated, 4.93 +/- 1.39 and 3.15 +/- 1.38 in long-term (> 1 year) treated and 4.11 +/- 0.5 and 2.0 +/- 0.74 in control subjects, respectively. The apolipoprotein A-1:B ratio was 1.98 +/- 0.5 in long-term treated and 1.6 +/- 0.6 in control subjects. CONCLUSIONS The improvement of lipid composition with short-term GH therapy is temporary, but the increase in apo A-1:B is not and seems to be the particular benefit of this therapy.
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Affiliation(s)
- M Yildiz
- Clinic of Paediatrics, SSK Göztepe Education Hospital, Istanbul, Turkey.
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