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Lapides R, Saravi B, Mueller A, Wang-Evers M, Maul LV, Németh I, Navarini A, Manstein D, Roider E. Possible Explanations for Rising Melanoma Rates Despite Increased Sunscreen Use over the Past Several Decades. Cancers (Basel) 2023; 15:5868. [PMID: 38136411 PMCID: PMC10741796 DOI: 10.3390/cancers15245868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/06/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023] Open
Abstract
The incidence of cutaneous melanoma continues to rise despite the increased use of sunscreens within the last several decades. Some research even suggests that the use of sunscreen is associated with increased rates of melanoma. Given the aggressive, and often deadly, nature of cutaneous melanoma, the aim of this communication is to better elucidate the relationship between sunscreen use and melanoma development and if there are other preventative measures to be aware of. A search was performed to identify the studies that have investigated melanoma development in individuals who used sunscreen and those who did not. Study limitations and possible confounding variables were identified, which guided a subsequent search to determine what data were available to support that these limitations and confounding variables may explain the perplexing association between sunscreen use and melanoma development. Five hypotheses were generated, which were related to increased awareness and reporting, the relationship between sunscreen use and the duration of sun exposure, the importance of broad-spectrum protection, and the effect of sunscreen on reactive oxygen species formation. The main conclusion is that more recent studies that control for confounding variables are required to determine the true effect of adequate broad-spectrum sunscreen use today on the development of melanoma.
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Affiliation(s)
- Rebecca Lapides
- The Robert Larner, M.D., College of Medicine, University of Vermont, Burlington, VT 05405, USA;
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA; (M.W.-E.); (D.M.)
| | - Babak Saravi
- Department of Orthopedics and Trauma Surgery, Medical Center, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany;
| | - Alina Mueller
- Department of Dermatology, University Hospital Basel, 4055 Basel, Switzerland; (A.M.); (L.V.M.); (A.N.)
| | - Michael Wang-Evers
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA; (M.W.-E.); (D.M.)
| | - Lara Valeska Maul
- Department of Dermatology, University Hospital Basel, 4055 Basel, Switzerland; (A.M.); (L.V.M.); (A.N.)
- Department of Dermatology, University Hospital Zurich, 8091 Zurich, Switzerland
- Faculty of Medicine, University of Zurich, 8006 Zurich, Switzerland
| | - István Németh
- Department of Dermatology and Allergology, Szent-Györgyi Albert Medical School, University of Szeged, 6720 Szeged, Hungary;
| | - Alexander Navarini
- Department of Dermatology, University Hospital Basel, 4055 Basel, Switzerland; (A.M.); (L.V.M.); (A.N.)
| | - Dieter Manstein
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA; (M.W.-E.); (D.M.)
| | - Elisabeth Roider
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA; (M.W.-E.); (D.M.)
- Department of Dermatology, University Hospital Basel, 4055 Basel, Switzerland; (A.M.); (L.V.M.); (A.N.)
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2
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Roider E, Lakatos AIT, McConnell AM, Wang P, Mueller A, Kawakami A, Tsoi J, Szabolcs BL, Ascsillán AA, Suita Y, Igras V, Lo JA, Hsiao JJ, Lapides R, Pál DMP, Lengyel AS, Navarini A, Okazaki A, Iliopoulos O, Németh I, Graeber TG, Zon L, Giese RW, Kemeny LV, Fisher DE. MITF regulates IDH1 and NNT and drives a transcriptional program protecting cutaneous melanoma from reactive oxygen species. bioRxiv 2023:2023.11.10.564582. [PMID: 38014031 PMCID: PMC10680652 DOI: 10.1101/2023.11.10.564582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Microphthalmia-associated transcription factor (MITF) plays pivotal roles in melanocyte development, function, and melanoma pathogenesis. MITF amplification occurs in melanoma and has been associated with resistance to targeted therapies. Here, we show that MITF regulates a global antioxidant program that increases survival of melanoma cell lines by protecting the cells from reactive oxygen species (ROS)-induced damage. In addition, this redox program is correlated with MITF expression in human melanoma cell lines and patient-derived melanoma samples. Using a zebrafish melanoma model, we show that MITF decreases ROS-mediated DNA damage in vivo . Some of the MITF target genes involved, such as IDH1 and NNT , are regulated through direct MITF binding to canonical enhancer box (E-BOX) sequences proximal to their promoters. Utilizing functional experiments, we demonstrate the role of MITF and its target genes in reducing cytosolic and mitochondrial ROS. Collectively, our data identify MITF as a significant driver of the cellular antioxidant state. One Sentence Summary MITF promote melanoma survival via increasing ROS tolerance.
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3
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Wan G, DeSimone M, Liu F, Nguyen N, Leung B, Choi M, Bruce A, Stagner A, Lian C, Russell-Goldman E, Jiao M, Zhen D, Zhao J, Gil J, Németh I, Marko-Varga G, Kwatra S, Yu K, Semenov Y. 649 CNN-based histopathology image analysis for early-stage melanoma recurrence. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.660] [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: 10/17/2022]
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4
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Simonka Z, Paszt A, Kovách K, Tóth I, Horváth Z, Pieler J, Tajti J, Leprán Á, Tiszlavicz L, Németh I, Rosztóczy A, Lup M, Lázár G. [Surgical treatment of gastroesophageal reflux disease and Barrett’s esophagus]. Magy Seb 2022; 75:133-141. [PMID: 35895531 DOI: 10.1556/1046.2022.20007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 04/04/2022] [Indexed: 06/15/2023]
Abstract
For the centenary of the Department of Surgery, University of Szeged we have investigated and summarized the results and outcomes of 779 anti-reflux surgery cases between 1. January 2000 – 31. May 2021. The indication for surgery was made in close collaboration with the internal medicine workgroup depending on the results of endoscopy and functional tests. The primer indication for surgery was medical therapy-resistant reflux disease. Based on our clinical practice we performed laparoscopic Nissen fundoplication in 98,2% of the cases. Besides the long- and short-term postoperative complications, we investigated the long-term effect of anti-reflux surgery on acid and bile reflux, and the improvement of the patients' quality of life using the Visick score, and modified GERD-HRLQ score. Our investigations have proven the effect of acid and bile reflux in the pathogenesis of Barrett's esophagus and furthermore we have confirmed that laparoscopic anti-reflux surgery restores the function of the lower esophageal sphincter and eliminates acid and bile reflux, so in certain cases Barrett's esophagus regression can be achieved. But due to the heterogeneity of GERD and Barrett's esophagus long-term and regular endoscopic control is necessary.
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Affiliation(s)
- Zsolt Simonka
- 1 Szegedi Tudományegyetem Szent-Györgyi Albert Orvostudományi Kar, Sebészeti Klinika, Szeged, Magyarország (tanszékvezető: Prof. Dr. Lázár György)
| | - Attila Paszt
- 1 Szegedi Tudományegyetem Szent-Györgyi Albert Orvostudományi Kar, Sebészeti Klinika, Szeged, Magyarország (tanszékvezető: Prof. Dr. Lázár György)
| | - Kornél Kovách
- 1 Szegedi Tudományegyetem Szent-Györgyi Albert Orvostudományi Kar, Sebészeti Klinika, Szeged, Magyarország (tanszékvezető: Prof. Dr. Lázár György)
| | - Illés Tóth
- 1 Szegedi Tudományegyetem Szent-Györgyi Albert Orvostudományi Kar, Sebészeti Klinika, Szeged, Magyarország (tanszékvezető: Prof. Dr. Lázár György)
| | - Zoltán Horváth
- 1 Szegedi Tudományegyetem Szent-Györgyi Albert Orvostudományi Kar, Sebészeti Klinika, Szeged, Magyarország (tanszékvezető: Prof. Dr. Lázár György)
| | - József Pieler
- 1 Szegedi Tudományegyetem Szent-Györgyi Albert Orvostudományi Kar, Sebészeti Klinika, Szeged, Magyarország (tanszékvezető: Prof. Dr. Lázár György)
| | - János Tajti
- 1 Szegedi Tudományegyetem Szent-Györgyi Albert Orvostudományi Kar, Sebészeti Klinika, Szeged, Magyarország (tanszékvezető: Prof. Dr. Lázár György)
| | - Ádám Leprán
- 1 Szegedi Tudományegyetem Szent-Györgyi Albert Orvostudományi Kar, Sebészeti Klinika, Szeged, Magyarország (tanszékvezető: Prof. Dr. Lázár György)
| | - László Tiszlavicz
- 2 Szegedi Tudományegyetem Szent-Györgyi Albert Orvostudományi Kar, Patológiai Intézet, Szeged, Magyarország (tanszékvezető: Prof. Dr. Tiszlavicz László)
| | - István Németh
- 2 Szegedi Tudományegyetem Szent-Györgyi Albert Orvostudományi Kar, Patológiai Intézet, Szeged, Magyarország (tanszékvezető: Prof. Dr. Tiszlavicz László)
| | - András Rosztóczy
- 3 Szegedi Tudományegyetem Szent-Györgyi Albert Orvostudományi Kar, Belgyógyászati Klinika, Szeged, Magyarország (tanszékvezető: Prof. Dr. Lengyel Csaba)
| | - Márton Lup
- 4 Békés Megyei Központi Kórház, Pándy Kálmán Tagkórház, Érsebészeti Osztály, Szeged, Magyarország (osztályvezető: Dr. Rokszin Tibor)
| | - György Lázár
- 1 Szegedi Tudományegyetem Szent-Györgyi Albert Orvostudományi Kar, Sebészeti Klinika, Szeged, Magyarország (tanszékvezető: Prof. Dr. Lázár György)
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5
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Csécsei K, Csehely S, Póka R, Zádori Z, Németh I, Ringelhan B, Molnár S, Jakab A. Haemangioma a méhnyakban: 4 eset ismertetése és irodalmi áttekintés. Orv Hetil 2022; 163:187-194. [DOI: 10.1556/650.2022.32317] [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: 05/21/2021] [Accepted: 06/11/2021] [Indexed: 11/19/2022]
Abstract
Összefoglaló. A haemangioma a női nemi szervekben viszonylag ritkán,
a méhnyakban pedig még ritkábban fordul elő. Kis mérete és szegényes megjelenése
miatt elkerülheti a figyelmet, előfordul azonban, hogy műtéti ellátást igénylő
vérzést okoz. Az évek során 4 esetben (ebből 2 esetben terhesség alatt)
diagnosztizáltunk méhnyak-haemangiomát (2 esetben cervicalis intraepithelialis
carcinomával társulva), melyeknek ismertetjük változatos tüneteit, kolposzkópos
megjelenését és a diagnózist biztosító szövettani (immunhisztokémiai)
illusztrációit, valamint a képlet terhesség alatti fejlődésének kolposzkópos
monitorizálását. 2 esetben capillaris (cavernosus) haemangiomát, 2 esetben
arteriovenosus malformatiót igazoltunk. Az általunk hozzáférhető szakirodalomban
nem találtunk magyar szerző(k)től beszámolót erről a cervicalis lokalizációjú,
ritka, jóindulatú, de gyakran veszélyes vascularis daganatról. Orv Hetil. 2022;
163(5): 187–194.
Summary. Hemangioma is relatively rare in the female genital organs
and even less common in the uterine cervix. Its small size and poor appearance
often result in a missed diagnosis, but it may cause bleeding that requires
surgery. Over the years, we have confirmed the diagnosis of cervical hemangioma
in 4 cases including two in pregnancy. 2 cases were associated with cervical
intraepithelial neoplasia. This case report describes the symptoms, colposcopic
appearance, and histological characteristics including immunohistochemical
findings, and the colposcopic monitoring of development of the condition during
pregnancy. In 2 cases, a capillary (cavernous) hemangioma, in 2 cases an
arteriovenous malformation was diagnosed. We did not find any report from
Hungarian author(s) about this rare, benign, but often dangerous vascular tumor
with cervical localization. Orv Hetil. 2022; 163(5): 187–194.
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Affiliation(s)
- Károly Csécsei
- Soproni Erzsébet Oktató Kórház, Szülészeti és Nőgyógyászati Osztály Sopron Magyarország
| | - Szilvia Csehely
- Debreceni Egyetem, Általános Orvostudományi Kar, Szülészeti és Nőgyógyászati Intézet Debrecen Magyarország
| | - Róbert Póka
- Debreceni Egyetem, Általános Orvostudományi Kar, Szülészeti és Nőgyógyászati Intézet Debrecen Magyarország
| | - Zoltán Zádori
- Jósa András Megyei Oktatókórház, Onkoradiológiai Osztály Nyíregyháza Magyarország
| | - István Németh
- Soproni Erzsébet Oktató Kórház, Patológiai Osztály Sopron Magyarország
| | - Birgit Ringelhan
- Soproni Erzsébet Oktató Kórház, Patológiai Osztály Sopron Magyarország
| | - Sarolta Molnár
- Debreceni Egyetem, Általános Orvostudományi Kar, Pathologiai Intézet Debrecen Magyarország
| | - Attila Jakab
- Debreceni Egyetem, Általános Orvostudományi Kar, Szülészeti és Nőgyógyászati Intézet Debrecen Magyarország
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6
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Pajtók C, Veres-Székely A, Agócs R, Szebeni B, Dobosy P, Németh I, Veréb Z, Kemény L, Szabó AJ, Vannay Á, Tulassay T, Pap D. High salt diet impairs dermal tissue remodeling in a mouse model of IMQ induced dermatitis. PLoS One 2021; 16:e0258502. [PMID: 34723976 PMCID: PMC8559960 DOI: 10.1371/journal.pone.0258502] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 09/28/2021] [Indexed: 02/02/2023] Open
Abstract
Recent animal studies, as well as quantitative sodium MRI observations on humans demonstrated that remarkable amounts of sodium can be stored in the skin. It is also known that excess sodium in the tissues leads to inflammation in various organs, but its role in dermal pathophysiology has not been elucidated. Therefore, our aim was to study the effect of dietary salt loading on inflammatory process and related extracellular matrix (ECM) remodeling in the skin. To investigate the effect of high salt consumption on inflammation and ECM production in the skin mice were kept on normal (NSD) or high salt (HSD) diet and then dermatitis was induced with imiquimod (IMQ) treatment. The effect of high salt concentration on dermal fibroblasts (DF) and peripheral blood mononuclear cells (PBMC) was also investigated in vitro. The HSD resulted in increased sodium content in the skin of mice. Inflammatory cytokine Il17 expression was elevated in the skin of HSD mice. Expression of anti-inflammatory Il10 and Il13 decreased in the skin of HSD or HSD IMQ mice. The fibroblast marker Acta2 and ECM component Fn and Col1a1 decreased in HSD IMQ mice. Expression of ECM remodeling related Pdgfb and activation phosphorylated (p)-SMAD2/3 was lower in HSD IMQ mice. In PBMCs, production of IL10, IL13 and PDGFB was reduced due to high salt loading. In cultured DFs high salt concentration resulted in decreased cell motility and ECM production, as well. Our results demonstrate that high dietary salt intake is associated with increased dermal pro-inflammatory status. Interestingly, although inflammation induces the synthesis of ECM in most organs, the expression of ECM decreased in the inflamed skin of mice on high salt diet. Our data suggest that salt intake may alter the process of skin remodeling.
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Affiliation(s)
- Csenge Pajtók
- 1st Department of Paediatrics, Semmelweis University, Budapest, Hungary
| | - Apor Veres-Székely
- 1st Department of Paediatrics, Semmelweis University, Budapest, Hungary
- ELKH-SE Pediatrics and Nephrology Research Group, Budapest, Hungary
| | - Róbert Agócs
- 1st Department of Paediatrics, Semmelweis University, Budapest, Hungary
| | - Beáta Szebeni
- 1st Department of Paediatrics, Semmelweis University, Budapest, Hungary
- ELKH-SE Pediatrics and Nephrology Research Group, Budapest, Hungary
| | - Péter Dobosy
- Institute of Aquatic Ecology, Centre for Ecological Research, Budapest, Hungary
| | - István Németh
- Faculty of Medicine, Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Zoltán Veréb
- Faculty of Medicine, Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Lajos Kemény
- Faculty of Medicine, Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Attila J. Szabó
- 1st Department of Paediatrics, Semmelweis University, Budapest, Hungary
- ELKH-SE Pediatrics and Nephrology Research Group, Budapest, Hungary
| | - Ádám Vannay
- ELKH-SE Pediatrics and Nephrology Research Group, Budapest, Hungary
| | - Tivadar Tulassay
- 1st Department of Paediatrics, Semmelweis University, Budapest, Hungary
- ELKH-SE Pediatrics and Nephrology Research Group, Budapest, Hungary
| | - Domonkos Pap
- 1st Department of Paediatrics, Semmelweis University, Budapest, Hungary
- ELKH-SE Pediatrics and Nephrology Research Group, Budapest, Hungary
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7
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Allouche J, Rachmin I, Adhikari K, Pardo LM, Lee JH, McConnell AM, Kato S, Fan S, Kawakami A, Suita Y, Wakamatsu K, Igras V, Zhang J, Navarro PP, Lugo CM, Noonan HR, Christie KA, Itin K, Mujahid N, Lo JA, Won CH, Evans CL, Weng QY, Wang H, Osseiran S, Lovas A, Németh I, Cozzio A, Navarini AA, Hsiao JJ, Nguyen N, Kemény LV, Iliopoulos O, Berking C, Ruzicka T, Gonzalez-José R, Bortolini MC, Canizales-Quinteros S, Acuna-Alonso V, Gallo C, Poletti G, Bedoya G, Rothhammer F, Ito S, Schiaffino MV, Chao LH, Kleinstiver BP, Tishkoff S, Zon LI, Nijsten T, Ruiz-Linares A, Fisher DE, Roider E. NNT mediates redox-dependent pigmentation via a UVB- and MITF-independent mechanism. Cell 2021; 184:4268-4283.e20. [PMID: 34233163 PMCID: PMC8349839 DOI: 10.1016/j.cell.2021.06.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [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: 09/21/2020] [Revised: 03/09/2021] [Accepted: 06/15/2021] [Indexed: 12/26/2022]
Abstract
Ultraviolet (UV) light and incompletely understood genetic and epigenetic variations determine skin color. Here we describe an UV- and microphthalmia-associated transcription factor (MITF)-independent mechanism of skin pigmentation. Targeting the mitochondrial redox-regulating enzyme nicotinamide nucleotide transhydrogenase (NNT) resulted in cellular redox changes that affect tyrosinase degradation. These changes regulate melanosome maturation and, consequently, eumelanin levels and pigmentation. Topical application of small-molecule inhibitors yielded skin darkening in human skin, and mice with decreased NNT function displayed increased pigmentation. Additionally, genetic modification of NNT in zebrafish alters melanocytic pigmentation. Analysis of four diverse human cohorts revealed significant associations of skin color, tanning, and sun protection use with various single-nucleotide polymorphisms within NNT. NNT levels were independent of UVB irradiation and redox modulation. Individuals with postinflammatory hyperpigmentation or lentigines displayed decreased skin NNT levels, suggesting an NNT-driven, redox-dependent pigmentation mechanism that can be targeted with NNT-modifying topical drugs for medical and cosmetic purposes.
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Affiliation(s)
- Jennifer Allouche
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Inbal Rachmin
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Kaustubh Adhikari
- School of Mathematics and Statistics, The Open University, Milton Keynes, MK7 6AA, UK; Department of Genetics, Evolution and Environment and UCL Genetics Institute, University College London, London WC1E 6BT, UK
| | - Luba M Pardo
- Department of Dermatology, Erasmus Medical Center, 3015 Rotterdam, the Netherlands
| | - Ju Hee Lee
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, 03722 Seoul, Korea
| | - Alicia M McConnell
- Stem Cell Program and Division of Hematology/Oncology, Boston Children's Hospital and the Howard Hughes Medical Institute, Boston, MA 02115, USA
| | - Shinichiro Kato
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA; Department of Immunology, Center for 5D Cell Dynamics, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Shaohua Fan
- State Key Laboratory of Genetic Engineering, Human Phenome Institute, School of Life Sciences, Fudan University, 200438 Shanghai, China
| | - Akinori Kawakami
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Yusuke Suita
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Kazumasa Wakamatsu
- Institute for Melanin Chemistry, Fujita Health University, Toyoake, Aichi 470-1192, Japan
| | - Vivien Igras
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Jianming Zhang
- National Research Center for Translational Medicine (Shanghai), State Key Laboratory of Medical Genomics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025 Shanghai, China
| | - Paula P Navarro
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Camila Makhlouta Lugo
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Haley R Noonan
- Stem Cell Program and Division of Hematology/Oncology, Boston Children's Hospital and the Howard Hughes Medical Institute, Boston, MA 02115, USA
| | - Kathleen A Christie
- Center for Genomic Medicine and Department of Pathology, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Pathology, Harvard Medical School, Boston, MA 02115, USA
| | - Kaspar Itin
- Department of Dermatology, University Hospital of Basel, 4031 Basel, Switzerland
| | - Nisma Mujahid
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA; Boston University School of Medicine, Boston, MA 02118, USA; University of Utah, Department of Dermatology, Salt Lake City, UT 84132, USA
| | - Jennifer A Lo
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Chong Hyun Won
- Department of Dermatology, Asan Medical Center, Ulsan University College of Medicine, 05505 Seoul, Korea
| | - Conor L Evans
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Qing Yu Weng
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Hequn Wang
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Sam Osseiran
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Alyssa Lovas
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - István Németh
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary
| | - Antonio Cozzio
- Department of Dermatology, Venerology, and Allergology, Kantonsspital St. Gallen, 9007 St. Gallen, Switzerland
| | - Alexander A Navarini
- Department of Dermatology, University Hospital of Basel, 4031 Basel, Switzerland
| | - Jennifer J Hsiao
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Nhu Nguyen
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
| | - Lajos V Kemény
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA; Department of Dermatology, Venereology, and Dermatooncology, Semmelweis University, 1085 Budapest, Hungary
| | - Othon Iliopoulos
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA
| | - Carola Berking
- Department of Dermatology, Universitätsklinikum Erlangen, Friedrich Alexander University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Thomas Ruzicka
- Department of Dermatology and Allergy, University Hospital Munich, Ludwig Maximilian University, 80337 Munich, Germany
| | - Rolando Gonzalez-José
- Instituto Patagónico de Ciencias Sociales y Humanas-Centro Nacional Patagónico, CONICET, Puerto Madryn U912OACD, Argentina
| | - Maria-Cátira Bortolini
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre 91501-970, Brazil
| | - Samuel Canizales-Quinteros
- Unidad de Genómica de Poblaciones Aplicada a la Salud, Facultad de Química, Universidad Nacional Autónoma de México e Instituto Nacional de Medicina Genómica, Mexico City 04510, Mexico
| | | | - Carla Gallo
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima 15102, Peru
| | - Giovanni Poletti
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima 15102, Peru
| | - Gabriel Bedoya
- Genética Molecular (GENMOL), Universidad de Antioquia, Medellín 5001000, Colombia
| | - Francisco Rothhammer
- Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000009, Chile; Programa de Genetica Humana, ICBM, Facultad de Medicina, Universidad de Chile, Santiago 1027, Chile
| | - Shosuke Ito
- Institute for Melanin Chemistry, Fujita Health University, Toyoake, Aichi 470-1192, Japan
| | - Maria Vittoria Schiaffino
- Internal Medicine, Diabetes and Endocrinology Unit, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Luke H Chao
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Benjamin P Kleinstiver
- Center for Genomic Medicine and Department of Pathology, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Pathology, Harvard Medical School, Boston, MA 02115, USA
| | - Sarah Tishkoff
- Departments of Genetics and Biology, University of Pennsylvania, Philadelphia, PA, USA
| | - Leonard I Zon
- Stem Cell Program and Division of Hematology/Oncology, Boston Children's Hospital and the Howard Hughes Medical Institute, Boston, MA 02115, USA
| | - Tamar Nijsten
- Department of Dermatology, Erasmus Medical Center, 3015 Rotterdam, the Netherlands
| | - Andrés Ruiz-Linares
- Ministry of Education Key Laboratory of Contemporary Anthropology and Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Human Phenome Institute, Fudan University, Shanghai 200433, China; UMR 7268, CNRS-EFS-ADES, Aix-Marseille University, Marseille 13005, France
| | - David E Fisher
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA; Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA.
| | - Elisabeth Roider
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA; Department of Dermatology, University Hospital of Basel, 4031 Basel, Switzerland; Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary.
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8
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Institóris L, Kovács K, Sija É, Berkecz R, Körmöczi T, Németh I, Elek I, Bakos Á, Urbán I, Pap C, Kereszty É. Clinical symptoms and blood concentration of new psychoactive substances (NPS) in intoxicated and hospitalized patients in the Budapest region of Hungary (2018-19). Clin Toxicol (Phila) 2021; 60:18-24. [PMID: 34080493 DOI: 10.1080/15563650.2021.1928162] [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] [Indexed: 10/21/2022]
Abstract
BACKGROUND New Psychoactive Substances (NPS) impose a new challenge on the legal and health care system, yet, there is little information available about how new substances spread based on hospitalization of intoxicated patients. The aims of this study were: (i) to investigate the frequency of NPS among suspected drug intoxicated patients, (ii) to study the connection between blood concentration and clinical symptoms, (iii) to determine their half-life with a time-series blood sampling protocol. METHODS During the observation period, 116 suspected drug intoxicated patients were sampled. The samples were analyzed for alcohol, 20 classical illicit and licit drugs, and for 78 NPS. Clinical symptoms were registered on-site (by the Emergency Medical Services) and (also) at hospital admittance. RESULTS NPS were detected in 51 patients of which cathinones were found in 4, the synthetic cannabinoids (SCs) 5 F-MDMB-PINACA and 5 F-MDMB-PICA in 23-23, and CUMYL-CH-MEGACLONE in 2 cases. Poison severity scores (PSS) showed mild to moderate intoxications overall. Connection between blood concentration and severity of clinical symptoms were inconclusive. The calculated half-life of 5 F-MDMB-PINACA and 5 F-MDMB-PICA was 2.50 and 2.68 h, respectively. CONCLUSION The ratio of SCs among the selected intoxicated patients was higher than expected from seizure data which could be the consequence of targeted patient selection. The clinical symptoms and the severity of intoxication cannot be characterized simply by NPS blood levels. The short half-life of SCs can explain the relatively rapid consolidation of intoxication symptoms.HighlightsIn the Budapest region, the majority of hospitalized NPS intoxications was caused by the synthetic cannabinoids 5F-MDMB-PINACA and 5F-MDMB-PICA in 2018-19.No correlation between blood concentration and symptoms severity could be established.The clinical symptoms of synthetic cannabinoid users improved quickly and no ICU treatment was necessary.The half-life of 5F-MDMB-PINACA and 5F-MDMB-PICA was proved to be 2.50 hours and 2.68 hours, respectively.
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Affiliation(s)
- László Institóris
- Department of Forensic Medicine, University of Szeged, Szeged, Hungary
| | - Katalin Kovács
- Department of Forensic Medicine, University of Szeged, Szeged, Hungary
| | - Éva Sija
- Department of Forensic Medicine, University of Szeged, Szeged, Hungary
| | - Róbert Berkecz
- Institute of Pharmaceutical Analysis, University of Szeged, Szeged, Hungary.,Department of Medical Chemistry, University of Szeged, Szeged, Hungary
| | - Tímea Körmöczi
- Institute of Pharmaceutical Analysis, University of Szeged, Szeged, Hungary.,Department of Medical Chemistry, University of Szeged, Szeged, Hungary
| | - István Németh
- Biotech Statistics and Programming, Parexel International, Budapest, Hungary
| | - István Elek
- Department of Emergency and Clinical Toxicology (DECT), Péterfy Hospital-Clinic and Manninger Jenő Institute of Traumatology, Budapest, Hungary
| | - Ágnes Bakos
- Department of Emergency and Clinical Toxicology (DECT), Péterfy Hospital-Clinic and Manninger Jenő Institute of Traumatology, Budapest, Hungary
| | - Ildikó Urbán
- Department of Emergency and Clinical Toxicology (DECT), Péterfy Hospital-Clinic and Manninger Jenő Institute of Traumatology, Budapest, Hungary
| | - Csaba Pap
- Department of Emergency and Clinical Toxicology (DECT), Péterfy Hospital-Clinic and Manninger Jenő Institute of Traumatology, Budapest, Hungary
| | - Éva Kereszty
- Department of Forensic Medicine, University of Szeged, Szeged, Hungary
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9
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Markó G, Németh I, Gyuricza V, Altbäcker V. Sex-specific differences in Juniperus communis: essential oil yield, growth-defence conflict and population sex ratio. AoB Plants 2021; 13:plab021. [PMID: 34122786 PMCID: PMC8192244 DOI: 10.1093/aobpla/plab021] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 04/20/2021] [Indexed: 06/12/2023]
Abstract
In plants, biomass and nutrient allocation often generate trade-offs between the different biochemical pathways conflicting the utilization of the common source among growth, reproduction and chemical defence. However, in dioecious plant species, these trade-off patterns could appear as a more contrasted problem between males and females due to the dissimilar reproduction investment. Generally, the growth ratio is higher in males than females, while females have a stronger defence than males. To understand the possible role of the sex-specific dissimilarities within the growth-defence conflict framework, we investigated the possible causes of the high variance of the essential oil yield in a dioecious evergreen species, Juniperus communis. Specifically, we tested the correlations between the essential oil yield with other individual-specific traits (e.g. sex, age), the presence of the growth-defence trade-off, and the differential growth and survival patterns between males and females through an extensive field survey with sample collection in three natural populations (Kiskunság National Park, Hungary). The individual-specific essential oil yield was also measured and served as a proxy to describe the degree of chemical defence. We found that the essential oil yield showed strong and consistent sex-specific patterns decreasing with age in adults. Contrary to the predictions, the males showed a consistently higher yield than the females. We also observed a growth-defence trade-off in males but not in females. Consistently with the growth-defence conflict hypothesis, the populations' sex ratio was male-biased, and this pattern was more evident with ageing modifying the demographic structure due to the sexually dissimilar lifespan. Our juniper study revealed a contrasting and unique essential oil accumulation driven by the complex allocation trade-off mechanisms within individuals, which could be a flexible and adaptive defence response against the increasing biotic and abiotic environmental stresses exacerbated under global climate change.
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Affiliation(s)
- Gábor Markó
- Department of Plant Pathology, Institute of Plant Protection, Hungarian University of Agriculture and Life Sciences, Ménesi út 44, H-1118 Budapest, Hungary
- Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University, Pázmány Péter sétány 1/C, H-1117 Budapest, Hungary
| | - István Németh
- Biotech Biostatistics and Programming, Parexel International, Hermina út 17, H-1146 Budapest, Hungary
| | - Veronika Gyuricza
- Department of Ethology, Institute of Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, H-1117 Budapest, Hungary
| | - Vilmos Altbäcker
- Department of Nature Conservation, Institute of Game Management and Nature Protection, Hungarian University of Agriculture and Life Sciences, Guba Sándor utca 40, H-7400 Kaposvár, Hungary
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10
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Nagy G, Varga E, Kovács L, Németh I, Varga E, Kemény L, Bata‐Csörgő Z. Anti‐interleukin‐6 receptor therapy‐induced cutaneous symptoms resembling purpura fulminans in a patient with seropositive rheumatoid arthritis. J Eur Acad Dermatol Venereol 2020; 34:e523-e524. [DOI: 10.1111/jdv.16442] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- G.R. Nagy
- Department of Dermatology and Allergology University of Szeged Szeged Hungary
| | - E. Varga
- Department of Dermatology and Allergology University of Szeged Szeged Hungary
| | - L. Kovács
- Department of Rheumatology and Immunology University of Szeged Szeged Hungary
| | - I. Németh
- Department of Dermatology and Allergology University of Szeged Szeged Hungary
| | - E. Varga
- Department of Dermatology and Allergology University of Szeged Szeged Hungary
| | - L. Kemény
- Department of Dermatology and Allergology University of Szeged Szeged Hungary
| | - Z. Bata‐Csörgő
- Department of Dermatology and Allergology University of Szeged Szeged Hungary
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11
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Abstract
The reactions of 2′-benzyloxyflavanones 9b,c with thallium(III) nitrate or iodobenzene diacetate in the presence of perchloric or sulfuric acid in trimethyl orthoformate was studied. Depending on the substitution pattern and the conditions, these compounds underwent 2-aryl migration (9b → 11a) and/or ring contraction (9c → 10b + 11b) and dehydrogenation (9c → 12). A probable mechanism of these transformations is discussed.
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Affiliation(s)
- István Németh
- Department of Organic Chemistry, University of Debrecen, H-4010 Debrecen, P.O. Box 20, Hungary
| | - Katalin Gulácsi
- Department of Organic Chemistry, University of Debrecen, H-4010 Debrecen, P.O. Box 20, Hungary
| | - Sándor Antus
- Department of Organic Chemistry, University of Debrecen, H-4010 Debrecen, P.O. Box 20, Hungary
- Research Group of Carbohydrates of the Hungarian Academy of Sciences, H-4010 Debrecen, P.O. Box 55, Hungary
| | - Sándor Kéki
- Department of Applied Chemistry, University of Debrecen, H-4010 Debrecen, P.O. Box 1, Hungary
| | - Miklós Zsuga
- Department of Applied Chemistry, University of Debrecen, H-4010 Debrecen, P.O. Box 1, Hungary
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12
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Belső N, Gubán B, Manczinger M, Kormos B, Bebes A, Németh I, Veréb Z, Széll M, Kemény L, Bata-Csörgő Z. Differential role of D cyclins in the regulation of cell cycle by influencing Ki67 expression in HaCaT cells. Exp Cell Res 2019; 374:290-303. [DOI: 10.1016/j.yexcr.2018.11.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 11/28/2018] [Accepted: 11/30/2018] [Indexed: 11/30/2022]
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13
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Berczeli O, Vizvári E, Katona M, Török D, Szalay L, Rárosi F, Németh I, Rakonczay Z, Hegyi P, Ding C, Tóth-Molnár E. Novel Insight Into the Role of CFTR in Lacrimal Gland Duct Function in Mice. Invest Ophthalmol Vis Sci 2018; 59:54-62. [PMID: 29305607 PMCID: PMC5756044 DOI: 10.1167/iovs.17-22533] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Purpose The role of cystic fibrosis transmembrane conductance regulator (CFTR) in lacrimal gland (LG) function has only recently received some attention, mainly from our group. In the present study, we investigated the potential changes of LG pathology, tear secretion, ocular surface integrity, and fluid secretion in isolated LG ducts from CFTR knockout (KO) mice. Methods Tear production and ocular surface integrity were investigated in anesthetized wild-type (WT) and KO mice using cotton threads and fluorescein staining, respectively. Immunofluorescence was used to localize CFTR protein in the LGs. Ductal fluid secretions evoked by forskolin (10 μM); cell-permeable cAMP analogue (8-bromo cAMP, 100 μM); or carbachol (100 μM) were measured in isolated LG ducts using video-microscopy. Intracellular Ca2+ homeostasis underlying carbachol stimulation was investigated with microfluorometry. Results Significant decrease in tear secretion and impaired ocular surface integrity were observed in KO mice. Immunofluorescence demonstrated the predominant presence of CFTR protein in the apical membranes of the duct cells from WT mice. Continuous fluid secretion was evoked by forskolin and 8-bromo cAMP in LG ducts from WT mice, while no secretory response was observed in ducts from KO mice. Carbachol caused similar secretory responses in ducts from WT and KO animals without significant differences in cytosolic Ca2+ signaling. Conclusions Our results suggest the important role of CFTR in LG ductal secretion and in the maintenance of ocular surface integrity, suggesting that CFTR may be a promising target of novel therapeutic approaches in the treatment of dry eye.
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Affiliation(s)
- Orsolya Berczeli
- Department of Ophthalmology, University of Szeged, Szeged, Hungary
| | - Eszter Vizvári
- Department of Ophthalmology, University of Szeged, Szeged, Hungary
| | - Máté Katona
- 1st Department of Internal Medicine, University of Szeged, Szeged, Hungary
| | - Dénes Török
- Department of Anatomy, University of Szeged, Szeged, Hungary
| | - László Szalay
- Department of Ophthalmology, University of Szeged, Szeged, Hungary
| | - Ferenc Rárosi
- Department of Medical Physics and Informatics, University of Szeged, Szeged, Hungary
| | - István Németh
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Zoltán Rakonczay
- 1st Department of Internal Medicine, University of Szeged, Szeged, Hungary.,Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - Péter Hegyi
- Institute for Translational Medicine and First Department of Medicine, University of Pécs, Pécs, Hungary.,MTA-SZTE Translational Gastroenterology Research Group, Szeged, Hungary
| | - Chuanqing Ding
- Pharmacology & Pharmaceutical Sciences, Ophthalmology, University of Southern California, Los Angeles, California, United States
| | - Edit Tóth-Molnár
- Department of Ophthalmology, University of Szeged, Szeged, Hungary.,Department of Pharmacology and Pharmacotherapy, University of Szeged, Szeged, Hungary
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14
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Affiliation(s)
- B. Diczig
- Department of Dermatology, Venereology and Dermatooncology; Semmelweis University; Budapest Hungary
| | - I. Németh
- Department of Dermatology, Venereology and Dermatooncology; Semmelweis University; Budapest Hungary
| | - M. Sárdy
- Department of Dermatology, Venereology and Dermatooncology; Semmelweis University; Budapest Hungary
| | - G. Pónyai
- Department of Dermatology, Venereology and Dermatooncology; Semmelweis University; Budapest Hungary
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15
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Gubán B, Kui R, Németh I, Bebes A, Széll M, Kemény L, Bata-Csörgö Z. 476 Abnormal basal membran protein expression in non-lesional psoriatic skin. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.672] [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: 11/29/2022]
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16
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Buknicz T, Gubán B, Bolla B, Buzás K, Harmati M, Bálind Á, Horváth P, Bata-Csörgö Z, Kemény L, Németh I. 565 Effects of melanoma derived exosomes on peritumoral stromal cells. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Gubán B, Kui R, Bozó R, Groma G, Németh I, Bebes A, Széll M, Kemény L, Bata-Csörgö Z. 406 Abnormal collagen VII expression in non-lesional psoriatic skin. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.06.426] [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: 10/21/2022]
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18
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Brandsma AM, ten Broeke T, Nederend M, Meulenbroek LA, van Tetering G, Meyer S, Jansen JM, Beltrán Buitrago MA, Nagelkerke SQ, Németh I, Ubink R, Rouwendal G, Lohse S, Valerius T, Leusen JH, Boross P. Simultaneous Targeting of FcγRs and FcαRI Enhances Tumor Cell Killing. Cancer Immunol Res 2015; 3:1316-24. [DOI: 10.1158/2326-6066.cir-15-0099-t] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 07/03/2015] [Indexed: 11/16/2022]
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19
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Petrovay F, Németh I, Balázs A, Balla E. Chlamydial conjunctivitis: prevalence and serovar distribution of Chlamydia trachomatis in adults. J Med Microbiol 2015; 64:967-970. [PMID: 26297635 DOI: 10.1099/jmm.0.000115] [Citation(s) in RCA: 4] [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: 10/23/2022] Open
Abstract
The extragenital manifestation of Chlamydia trachomatis infection frequently results in non-specific conjunctivitis among sexually active adults. The aims of the present study were to determine the prevalence of C. trachomatis, to describe the distribution of serovars among patients with conjunctivitis and to characterize the relationship between the prevalence and patient demographics such as age and gender. A total of 245 conjunctival specimens were screened for C. trachomatis DNA targeting the plasmid gene. Serovar determination of the C. trachomatis-positive specimens was carried out by an omp1 PCR-based RFLP analysis method. Statistical analysis was done using a generalized linear model. C. trachomatis was detected in 53 cases (21.6 %) of adult conjunctivitis. Molecular genotyping differentiated seven distinct urogenital serovars, the most prevalent being serovar E (16/53), followed by F (15/53), D (6/53), K (6/53), G (4/53), H (4/53) and J (2/53). Statistical analysis showed higher C. trachomatis prevalence in the younger age groups, and this peaked at younger age in women than in men. The high prevalence of this pathogen found in ocular samples should alert ophthalmologists to focus on the role of C. trachomatis in adult conjunctivitis. The serovar distribution indicated that ocular chlamydial infections usually have a genital source. Nevertheless, conjunctivitis might be the only sign of this sexually transmitted infection. Further comparative genotyping of C. trachomatis in ocular and genital specimens might give more detailed epidemiological information about the aetiology of the disease.
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Affiliation(s)
- Fruzsina Petrovay
- Department of Bacteriology, National Centre for Epidemiology, Budapest, Hungary
| | - István Németh
- Developmental Drug Metabolism and Pharmacokinetics, Gedeon Richter, Budapest, Hungary
| | - Andrea Balázs
- Department of Bacteriology, National Centre for Epidemiology, Budapest, Hungary
| | - Eszter Balla
- Department of Bacteriology, National Centre for Epidemiology, Budapest, Hungary
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20
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Maléth J, Balázs A, Pallagi P, Balla Z, Kui B, Katona M, Judák L, Németh I, Kemény LV, Rakonczay Z, Venglovecz V, Földesi I, Pető Z, Somorácz Á, Borka K, Perdomo D, Lukacs GL, Gray MA, Monterisi S, Zaccolo M, Sendler M, Mayerle J, Kühn JP, Lerch MM, Sahin-Tóth M, Hegyi P. Alcohol disrupts levels and function of the cystic fibrosis transmembrane conductance regulator to promote development of pancreatitis. Gastroenterology 2015; 148:427-39.e16. [PMID: 25447846 PMCID: PMC4353632 DOI: 10.1053/j.gastro.2014.11.002] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 10/23/2014] [Accepted: 11/04/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Excessive consumption of ethanol is one of the most common causes of acute and chronic pancreatitis. Alterations to the gene encoding the cystic fibrosis transmembrane conductance regulator (CFTR) also cause pancreatitis. However, little is known about the role of CFTR in the pathogenesis of alcohol-induced pancreatitis. METHODS We measured CFTR activity based on chloride concentrations in sweat from patients with cystic fibrosis, patients admitted to the emergency department because of excessive alcohol consumption, and healthy volunteers. We measured CFTR levels and localization in pancreatic tissues and in patients with acute or chronic pancreatitis induced by alcohol. We studied the effects of ethanol, fatty acids, and fatty acid ethyl esters on secretion of pancreatic fluid and HCO3(-), levels and function of CFTR, and exchange of Cl(-) for HCO3(-) in pancreatic cell lines as well as in tissues from guinea pigs and CFTR knockout mice after administration of alcohol. RESULTS Chloride concentrations increased in sweat samples from patients who acutely abused alcohol but not in samples from healthy volunteers, indicating that alcohol affects CFTR function. Pancreatic tissues from patients with acute or chronic pancreatitis had lower levels of CFTR than tissues from healthy volunteers. Alcohol and fatty acids inhibited secretion of fluid and HCO3(-), as well as CFTR activity, in pancreatic ductal epithelial cells. These effects were mediated by sustained increases in concentrations of intracellular calcium and adenosine 3',5'-cyclic monophosphate, depletion of adenosine triphosphate, and depolarization of mitochondrial membranes. In pancreatic cell lines and pancreatic tissues of mice and guinea pigs, administration of ethanol reduced expression of CFTR messenger RNA, reduced the stability of CFTR at the cell surface, and disrupted folding of CFTR at the endoplasmic reticulum. CFTR knockout mice given ethanol or fatty acids developed more severe pancreatitis than mice not given ethanol or fatty acids. CONCLUSIONS Based on studies of human, mouse, and guinea pig pancreata, alcohol disrupts expression and localization of the CFTR. This appears to contribute to development of pancreatitis. Strategies to increase CFTR levels or function might be used to treat alcohol-associated pancreatitis.
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Affiliation(s)
- József Maléth
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Anita Balázs
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Petra Pallagi
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Zsolt Balla
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Balázs Kui
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Máté Katona
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Linda Judák
- First Department of Medicine, University of Szeged, Szeged, Hungary,Department of Pharmacology and Pharmacotherapy, University of Szeged, Szeged, Hungary
| | - István Németh
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Lajos V. Kemény
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Zoltán Rakonczay
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Viktória Venglovecz
- Department of Pharmacology and Pharmacotherapy, University of Szeged, Szeged, Hungary
| | - Imre Földesi
- Department of Laboratory Medicine, University of Szeged, Szeged, Hungary
| | - Zoltán Pető
- Department of Emergency Medicine, University of Szeged, Szeged, Hungary
| | - Áron Somorácz
- Second Department of Pathology, Semmelweis University, Budapest, Hungary
| | - Katalin Borka
- Second Department of Pathology, Semmelweis University, Budapest, Hungary
| | - Doranda Perdomo
- Department of Physiology, McGill University, Montreal, Quebec, Canada
| | - Gergely L. Lukacs
- Department of Physiology, McGill University, Montreal, Quebec, Canada
| | - Mike A. Gray
- Institute for Cell & Molecular Biosciences, Newcastle University, Newcastle upon Tyne, England
| | - Stefania Monterisi
- Department of Physiology, Anatomy and Genetics, Oxford University, Oxford, England
| | - Manuela Zaccolo
- Department of Physiology, Anatomy and Genetics, Oxford University, Oxford, England
| | - Matthias Sendler
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - Julia Mayerle
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - Jens-Peter Kühn
- Institute of Radiology, University Medicine, Ernst Moritz University, Greifswald, Germany
| | - Markus M. Lerch
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - Miklós Sahin-Tóth
- Department of Molecular and Cell Biology, Henry M. Goldman School of Dental Medicine, Boston University, Boston, Massachusetts
| | - Péter Hegyi
- First Department of Medicine, University of Szeged, Szeged, Hungary; MTA-SZTE Lendület Translational Gastroenterology Research Group, Szeged, Hungary.
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Zsolt S, Paszt A, Géczi T, Abrahám S, Tóth I, Horváth Z, Pieler J, Tajti J, Varga A, Tiszlavicz L, Németh I, Izbéki F, Rosztóczy A, Wittmann T, Lázár G. [Comparison of surgical patients with gastroesophageal reflux disease and Barrett's esophagus]. Magy Seb 2014; 67:287-96. [PMID: 25327403 DOI: 10.1556/maseb.67.2014.5.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 11/19/2022]
Abstract
INTRODUCTION Barrett's esophagus (BE) is the only known precursor of adenocarcinoma occuring in the lower third of the esophagus. According to statistics, severity and elapsed time of gastroesophageal reflux disease (GERD) are major pathogenetic factors in the development of Barrett's esophagus. PATIENTS AND METHODS In a retrospective study between 2001 and 2008, we compared the preoperative results (signs and sympthoms, 24 hour pH manometry, esophageal manometry, Bilitec) and treatment efficacy of 176 GERD patients and 78 BE patients, who have undergone laparoscopic Nissen procedure for reflux disease. RESULTS The two groups of patients had similar demographic features, and elapsed time of reflux sympthoms were also equal. Both groups were admitted for surgery after a median time of 1.5 years (19.87 vs. 19.20 months) of ineffective medical (proton pump inhibitors) treatment. Preoperative functional tests showed a more severe presence of acid reflux in the BE group (DeMeester score 18.9 versus 41.9, p < 0.001). On the other hand, mano-metry - despite confirming lower esophageal sphincter (LES) damage - did not show difference between the two groups (12.10 vs. 12.57 mmHg, p = 0.892). We did not experience any mortality cases with laparoscopic antireflux procedures, although in two cases we had to convert during the operation (1 due to extensive adhesions, and 1 due to injury to the spleen). 3 months after the procedure - according to Visick score - both groups experienced a significant decrease, or lapse in reflux complaints (group I: 73%, group II: 81% of patients), LES functions improved (17.58 vs.18.70 mmHg), and the frequency and exposition of acid reflux decreased (DeMeester score 7.73 vs. 12.72). CONCLUSION The severity of abnormal acid reflux occuring parallel with the incompetent function of the damaged LES triggers not only inflammation in the gastroesophageal junction (GEJ), but also metaplastic process, and the development of Barrett's esophagus. Laparoscopic Nissen procedure for reflux disease can further improve outcome among patients with GERD not responding to conservative therapy.
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Affiliation(s)
- Simonka Zsolt
- Szegedi Tudományegyetem Sebészeti Klinika 6725 Szeged Pf. 427
| | - Attila Paszt
- Szegedi Tudományegyetem Sebészeti Klinika 6725 Szeged Pf. 427
| | - Tibor Géczi
- Szegedi Tudományegyetem Sebészeti Klinika 6725 Szeged Pf. 427
| | | | - Illés Tóth
- Szegedi Tudományegyetem Sebészeti Klinika 6725 Szeged Pf. 427
| | - Zoltán Horváth
- Szegedi Tudományegyetem Sebészeti Klinika 6725 Szeged Pf. 427
| | - József Pieler
- Szegedi Tudományegyetem Sebészeti Klinika 6725 Szeged Pf. 427
| | - János Tajti
- Szegedi Tudományegyetem Sebészeti Klinika 6725 Szeged Pf. 427
| | - Akos Varga
- Szegedi Tudományegyetem Sebészeti Klinika 6725 Szeged Pf. 427
| | | | | | - Ferenc Izbéki
- Szegedi Tudományegyetem I. Sz. Belgyógyászati Klinika Szeged
| | | | - Tibor Wittmann
- Szegedi Tudományegyetem I. Sz. Belgyógyászati Klinika Szeged
| | - György Lázár
- Szegedi Tudományegyetem Sebészeti Klinika 6725 Szeged Pf. 427
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Németh I, Kiss-Szikszai A, Illyés TZ, Mándi A, Komáromi I, Kurtán T, Antus S. Oxidative Rearrangement of Flavanones with Thallium(III) Nitrate, Lead Tetraacetate and Hypervalent Iodines in Trimethyl Orthoformate and Perchloric or Sulfuric Acid. Zeitschrift für Naturforschung B 2014. [DOI: 10.5560/znb.2012-0214] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
An HPLC monitoring protocol has been developed to follow the reaction of flavanone [(±)-1] with thallium(III) nitrate, lead tetracetate, phenyliodonium diacetate (PIDA) or [hydroxyl( tosyloxy)iodo]benzene in trimethyl orthoformate. Besides the major ring-contraction product, the 2,3-dihydrobenzo[b]furan derivative (±)-4a, minor components were also identified, and their structures including the relative stereochemistry and a plausible mechanism of formation are reported and compared with literature data. The oxidation reactions were monitored by HPLC at different conditions, and the structure and the ratio of the products were determined and compared. The preferred formation of flavone (5) from (±)-flavanone (1) by PIDA is explained by quantum-chemical calculations on the intermediate formed by the addition of this reagent to the enol ether derivative of (±)-1.
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Affiliation(s)
- István Németh
- Department of Organic Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Attila Kiss-Szikszai
- Department of Organic Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Tünde Zita Illyés
- Department of Organic Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Attila Mándi
- Department of Organic Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - István Komáromi
- Vascular Biology, Thrombosis and Hemostasis Research Group, Hungarian Academy of Sciences, University of Debrecen, H-4032 Debrecen, Hungary
| | - Tibor Kurtán
- Department of Organic Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Sándor Antus
- Department of Organic Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
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Németh I, Kiss-Szikszai A, Gulácsi K, Mándi A, Komáromi I, Kurtán T, Antus S. Oxidation of enol acetate of flavanone with thallium(III) nitrate or phenyliodonium diacetate: a convenient new route to isoflavone and flavone. Monatsh Chem 2014. [DOI: 10.1007/s00706-014-1157-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Molnár P, Posgay G, Németh I. Development and test results of a system for the recovery of the lower limbs. Biomech Hung 2013. [DOI: 10.17489/biohun/2013/1/21] [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: 11/30/2022] Open
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Hideghéty K, Plangár I, Mán I, Fekete G, Nagy Z, Volford G, Tőkés T, Szabó E, Szabó Z, Brinyiczki K, Mózes P, Németh I. Development of a small-animal focal brain irradiation model to study radiation injury and radiation-injury modifiers. Int J Radiat Biol 2013; 89:645-55. [DOI: 10.3109/09553002.2013.784424] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Gulácsi K, Németh I, Szappanos Á, Csillag K, Illyés TZ, Kurtán T, Antus S. Heck-oxyarylation of 2-phenyl-2H-chromenes and 1,2-dihydronaphthalenes. CROAT CHEM ACTA 2013. [DOI: 10.5562/cca2103] [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: 11/01/2022] Open
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Németh I, Püspöki J, Haraszkó C, Mátyási G, Nagy T, Freeman C, Scott RW, Baldwin JS. 3D Design Support for Rapid Virtual Prototyping of Manufacturing Systems. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.procir.2013.06.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Molnár P, Németh I, Farkas L, Juhász T. Angel Heel device and system for supporting the recovery of lower limb Intelligent load cell for medical purposes. Biomech Hung 2012. [DOI: 10.17489/biohun/2012/1/03] [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: 11/30/2022] Open
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Oláh O, Németh I, Tóth-Szuki V, Bari F, Domoki F. Regional Differences in the Neuronal Expression of Cyclooxygenase-2 (COX-2) in the Newborn Pig Brain. Acta Histochem Cytochem 2012; 45:187-92. [PMID: 22829712 PMCID: PMC3395304 DOI: 10.1267/ahc.11056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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: 11/10/2011] [Accepted: 03/21/2012] [Indexed: 11/22/2022] Open
Abstract
Cyclooxygenase (COX)-2 is the major constitutively expressed COX isoform in the newborn brain. COX-2 derived prostanoids and reactive oxygen species appear to play a major role in the mechanism of perinatal hypoxic-ischemic injury in the newborn piglet, an accepted animal model of the human term neonate. The study aimed to quantitatively determine COX-2 immunopositive neurons in different brain regions in piglets under normoxic conditions (n=15), and 4 hours after 10 min asphyxia (n=11). Asphyxia did not induce significant changes in neuronal COX-2 expression of any studied brain areas. In contrast, there was a marked regional difference in all experimental groups. Thus, significant difference was observed between fronto-parietal and temporo-occipital regions: 59±4% and 67±3% versus 41±2%* and 31±3%* respectively (mean±SEM, data are pooled from all subjects, n=26, *p<0.05, vs. fronto-parietal region). In the hippocampus, COX-2 immunopositivity was rare (highest expression in CA1 region: 14±2%). The studied subcortical areas showed negligible COX-2 staining. Our findings suggest that asphyxia does not significantly alter the pattern of neuronal COX-2 expression in the early reventilation period. Furthermore, based on the striking differences observed in cortical neuronal COX-2 distribution, the contribution of COX-2 mediated neuronal injury after asphyxia may also show region-specific differences.
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Affiliation(s)
- Orsolya Oláh
- Department of Physiology, University of Szeged School of Medicine
- Department of Physiology, University of Szeged School of Medicine
| | - István Németh
- Department of Dermatology and Allergology, University of Szeged School of Medicine
- Department of Dermatology and Allergology, University of Szeged School of Medicine
| | - Valéria Tóth-Szuki
- Department of Physiology, University of Szeged School of Medicine
- Department of Physiology, University of Szeged School of Medicine
| | - Ferenc Bari
- Department of Medical Physics and Informatics, University of Szeged School of Medicine
- Department of Medical Physics and Informatics, University of Szeged School of Medicine
| | - Ferenc Domoki
- Department of Physiology, University of Szeged School of Medicine
- Department of Physiology, University of Szeged School of Medicine
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Plangár I, Mán I, Szabó E, Volford G, Tokés T, Varga Z, Németh I, Weiczner R, Hideghety K. EP-1586 RAT MODEL FOR INVESTIGATION ON THE POTENTIAL MODIFIERS OF IONIZING RADIATION INDUCED BRAIN INJURY. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71919-9] [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: 11/30/2022]
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Rosztóczy A, Izbéki F, Róka R, Németh I, Gecse K, Vadászi K, Kádár J, Vetró E, Tiszlavicz L, Wittmann T. The evaluation of oesophageal function in patients with different types of oesophageal metaplasia. Digestion 2012; 84:273-80. [PMID: 21997472 DOI: 10.1159/000330823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Accepted: 07/14/2011] [Indexed: 02/04/2023]
Abstract
AIM To evaluate the oesophageal function in patients with different types of oesophageal metaplasia and in cases with dysplasia on the basis of the Montreal definition of gastro-oesophageal reflux disease. PATIENTS AND METHODS 270 consecutive patients [M/F 151/119, mean age 54.2 years (19-84)] with endoscopic and histological evidence of oesophageal metaplasia were prospectively studied: patients with specialized intestinal metaplasia (SIM, n = 109) and patients without SIM (n = 161). Patients with SIM were subdivided into a dysplasia-positive (n = 34) and a dysplasia-negative (n = 75) group. All patients underwent reflux symptom analysis, oesophageal manometry, and simultaneous 24-hour pH and biliary reflux monitoring. RESULTS Patients with SIM were significantly older and had a significantly higher body mass index than patients without SIM. A significant male predominance was observed in patients with SIM and dysplasia compared to the dysplasia-negative group. The clinical symptom spectrum and the prevalence of erosive oesophageal lesions were similar in all groups. Patients with SIM had longer metaplastic segments, which was further increased in the dysplasia-positive group. During oesophageal manometry, pH and biliary reflux monitoring, patients with SIM had more severe alterations than patients without SIM, and these were further increased in patients with SIM and dysplasia. CONCLUSIONS Patients with SIM had more severe oesophageal function abnormalities than those with other types of oesophageal metaplasia (e.g. gastric). The oesophageal function was further impaired if dysplasia was present in the metaplastic mucosa.
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Affiliation(s)
- András Rosztóczy
- First Department of Medicine, Albert Szent-Györgyi Medical Centre, University of Szeged, Szeged, Hungary.
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Eros G, Hartmann P, Berkó S, Csizmazia E, Csányi E, Sztojkov-Ivanov A, Németh I, Szabó-Révész P, Zupkó I, Kemény L. A novel murine model for the in vivo study of transdermal drug penetration. ScientificWorldJournal 2012; 2012:543536. [PMID: 22272176 PMCID: PMC3259504 DOI: 10.1100/2012/543536] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Accepted: 11/02/2011] [Indexed: 11/17/2022] Open
Abstract
Enhancement of the transdermal penetration of different active agents is an important research goal. Our aim was to establish a novel in vivo experimental model which provides a possibility for exact measurement of the quantity of penetrated drug. The experiments were performed on SKH-1 hairless mice. A skin fold in the dorsal region was fixed with two fenestrated titanium plates. A circular wound was made on one side of the skin fold. A metal cylinder with phosphate buffer was fixed into the window of the titanium plate. The concentration of penetrated drug was measured in the buffer. The skin fold was morphologically intact and had a healthy microcirculation. The drug appeared in the acceptor buffer after 30 min, and its concentration exhibited a continuous increase. The presence of ibuprofen was also detected in the plasma. In conclusion, this model allows an exact in vivo study of drug penetration and absorption.
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Affiliation(s)
- Gábor Eros
- Department of Dermatology and Allergology, University of Szeged, 6720 Szeged, Hungary.
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Simonka Z, Paszt A, Abrahám S, Pieler J, Tajti J, Tiszlavicz L, Németh I, Izbéki F, Rosztóczy A, Wittmann T, Rárosi F, Lázár G. The effects of laparoscopic Nissen fundoplication on Barrett's esophagus: long-term results. Scand J Gastroenterol 2012; 47:13-21. [PMID: 22150083 DOI: 10.3109/00365521.2011.639081] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE The aim of our study was to conduct a retrospective investigation of the efficacy of laparoscopic Nissen fundoplication in patients with Barrett's esophagus. MATERIAL AND METHODS A total of 78 patients with Barrett's esophagus underwent surgery. Patients were divided into three groups on the basis of the preoperative endoscopic biopsies: a non-intestinal group (n = 63) with fundic or cardiac metaplasia, an intestinal group (n = 18) with intestinal metaplasia, and a dysplastic group (n = 7) with low-grade dysplasia. Clinical follow-up was available in the case of 64 patients at a mean of 42 ± 16.9 months after surgery. RESULTS Check-up examination revealed total regression of Barrett's metaplasia in 10 patients. Partial regression was seen in 9 cases, no further progression in 34 patients, and progression into cardiac or intestinal metaplasia in 11 patients. No cases of dysplastic or malignant transformation were registered. Where we observed the regression of BE, among the postoperative functional examinations results of manometry (pressure of lower esophageal sphincter) and pH-metry were significantly better compared with those groups where no changes occurred in BE, or progression of BE was found. Discussion. Our results highlight the importance of the cases of fundic and cardiac metaplasia, which can also transform into intestinal metaplasia. CONCLUSIONS Antireflux surgery can appropriately control the reflux disease in a majority of the patients who had unsuccessful medical treatment, and it may inhibit the progression and induce the regression of Barrett's metaplasia in a significant proportion of these patients.
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Affiliation(s)
- Zsolt Simonka
- Department of Surgery, University of Szeged, Szeged, Hungary
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Wolfárd A, Paszt A, Szentpáli K, Hideghéthy K, Uhercsák G, Németh I, Tiszlavicz L, Lázár G. Efficacy and drawbacks of neoadjuvant chemoradiotherapy in squamous cell carcinoma of the thoracic esophagus. ACTA ACUST UNITED AC 2011; 58:1214-9. [PMID: 21937381 DOI: 10.5754/hge09500] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND/AIMS Neoadjuvant chemoradiotherapy (CRT) is widely applied in locally advanced esophageal tumors to improve resectability and local tumor control. In this study, we retrospectively analyzed the perioperative course of patients who underwent esophagectomy or esophagectomy following CRT. METHODOLOGY Forty one patients were admitted with non-advanced disease (T1-2, N0), and primary resection was performed. Additional 21 patients received neoadjuvant CRT because of locally advanced, T2-4, N0-1 disease. To investigate predictive factors for responsiveness to CRT, we determined the p53, p21 and Ki67 oncogene expressions in the biopsy samples from the CRT patients. RESULTS Following primary esophagectomy and esophagogastrostomy, the postoperative course was in most cases uneventful. Anastomotic leaks developed in 3 of the 41 cases (7.3%), and postoperative death in 1 case (2.4%). In response to CRT, significant down-staging was observed in 11 of the 21 patients (58%); in these cases esophagectomy was performed. However, in this group the rates of anastomotic leak (2 patients) and postoperative death (2 patients) were higher than in the first group (18% each). CONCLUSIONS Preoperative CRT is a good option for patients with locally advanced tumors, when primary R0 resection is hopeless. However, the rate and risk of postoperative complications are higher than after primary resection of non-advanced tumors.
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Affiliation(s)
- Antal Wolfárd
- Department of Surgeru, University of Szegedc, Hungary.
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Szenczi P, Bánszegi O, Dúcs A, Gedeon CI, Markó G, Németh I, Altbäcker V. Morphology and function of communal mounds of overwintering mound-building mice (Mus spicilegus). J Mammal 2011. [DOI: 10.1644/10-mamm-a-258.1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Pónyai G, Németh I, Husz S, Jurcsik A, Nebenführer L, Dinnyés M, Némethy P, Kohánka V, Temesvári E. Contact hypersensitivity to epoxy resin, methyldibromoglutaronitrile, tixocortol pivalate and budesonide in Hungary: a study in 1448 patients. GIORN ITAL DERMAT V 2011; 146:53-56. [PMID: 21317857] [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: 05/30/2023]
Abstract
AIM In order to map the frequency of contact hypersensitivity (CH) to epoxy resin, methyldibromoglutaronitrile (MDBGN), tixocortol pivalate (TP) and budesonide patch tests were carried out. METHODS The tests were performed in 1448 patients. Most patients belong to the allergic and irritative contact dermatitis groups. The tests were administered with the allergens epoxy resin 1%, MDBGN 0.3%, TP 1% and budesonide 0.1%, applied on the back. Reactions were evaluated at 40 min, on day 2 (D2), day 3 (D3) and day 4 (D4). In the patients of the Dept. of Dermatology, Venerology and Dermatooncology of Semmelweis University (patients number =1073) reactions were evaluated on day 7 as well. RESULTS Epoxy resin elicited immediate reactions in 1 patient at 40 min. Further evaluations showed no difference on D3, D4 and D7 with a frequency of CH of 1.03%. Patch testing for MDBGN did not provoke immediate reactions, evaluations showed an increasing hypersensitivity rate (D2: 0.93%; D7:1.77%). Patch tests with TP yielded no immediate reactions, the frequency of CH increased from 0.47% (D2) to 2.01% (D7). No immediate reactions were observed by budesonide; an increase was seen in frequency of CH (D2:0.93% to D7:3.84%). CH to the studied allergens was observed mostly in allergic contact dermatitis group, to budesonide in irritative contact dermatitis and in atopic dermatitis groups as well. CONCLUSION The data of the present study are the first results about this four allergens in Hungary and to our knowledge from our region as well.
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MESH Headings
- Allergens
- Budesonide/adverse effects
- Dermatitis, Allergic Contact/diagnosis
- Dermatitis, Allergic Contact/epidemiology
- Dermatitis, Allergic Contact/etiology
- Dermatitis, Contact/diagnosis
- Dermatitis, Contact/epidemiology
- Dermatitis, Contact/etiology
- Dermatitis, Irritant/diagnosis
- Dermatitis, Irritant/epidemiology
- Dermatitis, Irritant/etiology
- Epoxy Resins/adverse effects
- Humans
- Hungary/epidemiology
- Hydrocortisone/adverse effects
- Hydrocortisone/analogs & derivatives
- Hypersensitivity, Immediate/diagnosis
- Hypersensitivity, Immediate/epidemiology
- Hypersensitivity, Immediate/etiology
- Nitriles/adverse effects
- Patch Tests
- Preservatives, Pharmaceutical/adverse effects
- Urticaria/diagnosis
- Urticaria/epidemiology
- Urticaria/etiology
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Affiliation(s)
- G Pónyai
- Department of Dermatology, Venerology and Dermato-oncology of Semmelweis University, Budapest, Hungary.
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Hartmann P, Varga R, Zobolyák Z, Héger J, Csősz B, Németh I, Rázga Z, Vízler C, Garab D, Sántha P, Jancsó G, Boros M, Szabó A. Anti-inflammatory effects of limb ischaemic preconditioning are mediated by sensory nerve activation in rats. Naunyn Schmiedebergs Arch Pharmacol 2010; 383:179-89. [DOI: 10.1007/s00210-010-0588-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Accepted: 12/07/2010] [Indexed: 01/27/2023]
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Szabó A, Hartmann P, Varga R, Jánvári K, Lendvai Z, Szalai I, Gomez I, Varga G, Greksa F, Németh I, Rázga Z, Keresztes M, Garab D, Boros M. Periosteal microcirculatory action of chronic estrogen supplementation in osteoporotic rats challenged with tourniquet ischemia. Life Sci 2010; 88:156-62. [PMID: 21062630 DOI: 10.1016/j.lfs.2010.11.004] [Citation(s) in RCA: 5] [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] [Received: 06/24/2010] [Revised: 09/27/2010] [Accepted: 11/01/2010] [Indexed: 01/11/2023]
Abstract
AIMS Transient ischemia of osteoporotic bones during elective orthopedic surgery or fracture repair carries risks for serious complications, and estrogen loss or replacement has a potential to influence ischemia-reperfusion-induced inflammatory activation. To clarify this, we investigated the periosteal inflammatory changes in a clinically relevant time frame in ovariectomized rats, an experimental model of postmenopausal bone loss. Furthermore, the effects of chronic estrogen supplementation on the postischemic local and systemic inflammatory reactions were assessed. MAIN METHODS Bilateral ovariectomy or sham operation was performed in 3-month-old female Sprague-Dawley rats. Five months later, estrogen replacement therapy with 17β-estradiol (20 μg(-1) kg(-1) day(-1)) or vehicle treatment was initiated. The microcirculatory inflammatory consequences of 60-min total hindlimb ischemia followed by 180-min reperfusion were examined 11 months after ovariectomy and were compared with those in 3-month-old animals. KEY FINDINGS The osteoporosis that developed 5 months after ovariectomy was significantly ameliorated by estrogen replacement therapy. Both in ovariectomized and in non-ovariectomized animals, ischemia-reperfusion elevated the neutrophil adherence ~3-fold in the postcapillary venules of the periosteum (intravital microscopy), with an ~50-60% increase in intravascular neutrophil activation (CD11b; FACS analysis), an enhanced TNF-α release (ELISA) and periosteal expression of ICAM-1 (the endothelial ligand of CD11b; immunohistochemistry). Exogenous 17β-estradiol considerably reduced TNF-α release and the number of neutrophil-endothelial interactions in the periosteum, without affecting the CD11b and ICAM-1 expression changes. SIGNIFICANCE Osteoporosis itself does not increase the magnitude of the limb ischemia-reperfusion-associated periosteal inflammatory reaction. Chronic estrogen supplementation, however, reverses osteoporosis and significantly ameliorates the microcirculatory consequences of transient ischemia.
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Affiliation(s)
- Andrea Szabó
- Institute of Surgical Research, University of Szeged, Hungary.
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Domoki F, Oláh O, Zimmermann A, Németh I, Tóth-Szuki V, Hugyecz M, Temesvári P, Bari F. Hydrogen is neuroprotective and preserves cerebrovascular reactivity in asphyxiated newborn pigs. Pediatr Res 2010; 68:387-92. [PMID: 20657346 DOI: 10.1203/pdr.0b013e3181f2e81c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Hydrogen (H2) has been reported to neutralize toxic reactive oxygen species. Oxidative stress is an important mechanism of neuronal damage after perinatal asphyxia. We examined whether 2.1% H2-supplemented room air (H2-RA) ventilation would preserve cerebrovascular reactivity (CR) and brain morphology after asphyxia/reventilation (A/R) in newborn pigs. Anesthetized, ventilated piglets were assigned to one of the following groups: A/R with RA or H2-RA ventilation (A/R-RA and A/R-H2-RA; n = 8 and 7, respectively) and respective time control groups (n = 9 and 7). Asphyxia was induced by suspending ventilation for 10 min, followed by reventilation with the respective gases for 4 h. After euthanasia, the brains were processed for neuropathological examination. Pial arteriolar diameter changes to graded hypercapnia (5-10% CO2 inhalation), and NMDA (10(-4) M) were determined using the closed cranial window/intravital microscopy before and 1 h after asphyxia. Neuropathology revealed that H2-RA ventilation significantly reduced neuronal injury induced by A/R in virtually all examined brain regions including the cerebral cortex, the hippocampus, basal ganglia, cerebellum, and the brainstem. Furthermore, H2-RA ventilation significantly increased CR to hypercapnia after A/R (% vasodilation was 23 ± 4% versus 41 ± 9%, p < 0.05). H2-RA ventilation did not affect reactive oxygen species-dependent CR to NMDA. In summary, H2-RA could be a promising approach to reduce the neurologic deficits after perinatal asphyxia.
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Affiliation(s)
- Ferenc Domoki
- Department of Physiology, University of Szeged School of Medicine, Szeged H-6720, Hungary.
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Varga L, Baradnay G, Hohn J, Simonka Z, Hideghéthy K, Maráz A, Nikolényi A, Veréb B, Tiszlavicz L, Németh I, Mán E, Lázár G. [Clinical and histopathological results after the neo-adjuvant treatment of advanced rectal tumors]. Magy Onkol 2010; 54:129-35. [PMID: 20576589 DOI: 10.1556/monkol.54.2010.2.7] [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: 11/19/2022]
Abstract
The role of the surgical intervention is decisive in treating colorectal tumors. The neo-adjuvant radio-chemotherapy has improved the efficacy of the treatment of advanced rectum tumors. In order to decrease the size and stage of advanced rectal carcinoma and to increase the rate of resecability, we introduced neoadjuvant radio-chemotherapy. We carried out neo-adjuvant and surgical treatment in case of 67 patients with rectal adenocarcinoma (T 2-4 N 1-2 M 0 ) between June 1, 2005 and July 31, 2008. The average age of the patients was 61.2 years, the division according to sex was 44 males/23 females. Regarding the local stage of the rectal process or the proximity to the sphincter, we applied radio-chemotherapy (radiotherapy 25 times altogether 45 Gy and on the first and last week for 5-5 days they received 350 mg/m 2 /day 5-FU and 20 mg/m 2 /day leucovorin chemotherapy, recently complemented with 3 x 1.8 Gy advanced boost radiation aiming at the macroscopic tumor site with security zone). Patients underwent surgery 8 weeks on average after restaging examinations. Thirty-eight patients underwent anterior rectal resection with double stapler procedure; there were 18 abdominoperineal rectal extirpations, 7 Hartmann operations and 4 per annum excisions. Compared to the preoperative staging, the histological evaluation of the resected specimens showed total remission (pT 0 N 0 ) in 11% and partial remission in 43%. The morbidity necessitating reoperation was 5.9%, without mortality and suture insufficiency. The long-term neo-adjuvant oncological treatment led to down-staging of rectal tumors in most cases and increased the resecability and rate of resection operations.
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Affiliation(s)
- László Varga
- Szegedi Tudományegyetem AOK Sebészeti Klinika 6720 Szeged Pécsi u. 6.
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Gedeon CI, Markó G, Németh I, Nyitrai V, Altbäcker V. Nest material selection affects nest insulation quality for the European ground squirrel (Spermophilus citellus). J Mammal 2010. [DOI: 10.1644/09-mamm-a-089.1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Németh I, Nyitrai V, Németh A, Altbäcker V. Diuretic treatment affects the length of torpor bouts in hibernating European ground squirrels (Spermophilus citellus). J Comp Physiol B 2009; 180:457-64. [PMID: 19956957 DOI: 10.1007/s00360-009-0426-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2009] [Revised: 11/13/2009] [Accepted: 11/15/2009] [Indexed: 10/20/2022]
Abstract
During the hibernation season, hibernating mammals show a sequence of torpor bouts that are interrupted by periodic arousals and brief normothermic periods. The functional significance of periodic arousals is still uncertain. We hypothesized that the imbalances in water economy may play a role in the timing of periodic arousals in hibernating species. We applied furosemide, a diuretic drug, to assess whether hibernating European ground squirrels respond to elevated urine production by shortening their torpor bouts. Urine production in the treated squirrels increased and led to more frequent arousals, presumably to restore water balance by recovery of lost water from blood and tissues. The length of the subsequent normothermic phase was not affected by the diuretic treatment. Body mass change correlated primarily with the amount of voided urine. Although our study did not identify the underlying mechanism, our results support the view that water economy, and water loss may play a role in the timing of periodic arousals.
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Affiliation(s)
- István Németh
- Department of Ethology, Eötvös Loránd University, Pázmány Péter sétány 1/C, 1117, Budapest, Hungary.
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Molnár T, Farkas K, Nagy F, Szepes Z, Tiszlavicz L, Németh I, Nyári T, Wittmann T. Does the endoscopic appearance of the ileocecal valve suggest the severity of Crohn's disease in the terminal ileum? J Crohns Colitis 2009; 3:287-90. [PMID: 21172289 DOI: 10.1016/j.crohns.2009.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [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: 05/05/2009] [Revised: 06/11/2009] [Accepted: 08/03/2009] [Indexed: 02/08/2023]
Abstract
UNLABELLED Despite ileoscopy being the only procedure, which can accurately detect mucosal abnormalities in the ileum, it is performed only in 5-15% of the colonoscopies. AIM The aim of this study was to retrospectively determine the predictive value of the endoscopic findings of the ileocecal valve (ICV) in patients with CD. METHODS Data of 100 ileal or ileocolonic CD patients (45 females, 55 males, mean age 27.6 years, range 5-66), who underwent ileocolonoscopy between 2004 and 2008, were reviewed. Macroscopic appearance of the ICV and the endoscopic severity of the ileum evaluated by the Simple Endoscopic Score for Crohn's Disease were determined by re-evaluating the examinations recorded on DVDs in all cases. Histological scoring was performed in 56 cases. Statistical analyses were performed to assess relationships between the normal-looking ICV and the histological and endoscopic scores of the ileum and the correlation between the severity of the ileal inflammation and the macroscopic appearance of the ICV. RESULTS A macroscopically normal appearance of the ICV was detected in 30 patients. 60% of these patients were diagnosed with mild, 26.7% with moderate and 13.3% with severe endoscopic ileal inflammation. ICV was affected by CD in 70 patients, in whom significantly more severe ileal inflammation (p=0.005) was detected than in patients with normal-looking ICV. DISCUSSION Our results suggest that ileal exploration should be attempted in every suspected CD patients, because, although the appearance of the ICV correlates with the severity of the ileal inflammation, a normal-looking ICV does not correspond to normal ileal mucosa in almost one third of the cases.
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Affiliation(s)
- Tamás Molnár
- First Department of Medicine, University of Szeged, H-6720, Korányi fasor 8, Szeged, Hungary
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Hartmann P, Szabó A, Erős G, Gurabi D, Horváth G, Németh I, Ghyczy M, Boros M. Anti-inflammatory effects of phosphatidylcholine in neutrophil leukocyte-dependent acute arthritis in rats. Eur J Pharmacol 2009; 622:58-64. [DOI: 10.1016/j.ejphar.2009.09.012] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Revised: 08/27/2009] [Accepted: 09/08/2009] [Indexed: 12/11/2022]
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Novák P, Németh I, Hamar S, Tiszlavicz L, Szalai L, Sonkodi I, Nagy K. [Clear cell adenocarcinoma of the tongue. Coincidence or distant metastasis?]. Fogorv Sz 2009; 102:183-186. [PMID: 20000197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Malignant tumors of the salivary glands are rare, they account for less than 0.5% of all malignancies and for 5% of cancers of maxillofacial regions. Clear cell adenocarcinoma represents 1% of malignant tumors of the salivary glands. The present case involved a 63-years-old Hungarian woman with a painless, non-ulcerated, nodular mass on the right side of the middle part of the tongue. Her past medical history included right nephrectomy of renal cell carcinoma, seven years before the tongue tumor. The initial orofacial clinical examination suspected lipoma, neurinoma or distant metastasis of the renal cell carcinoma. The histomorphological analysis of the resected tongue tumor showed similar clear cell adenocarcinoma mimicking the phenotype of renal cell carcinoma but detailed immunohistochemical analysis proved the primary origin of tongue indicating second primary metachronous malignant tumor.
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Affiliation(s)
- Péter Novák
- Szegedi Tudományegyetem, Fogorvostudományi Kar, Szájsebészeti Tanszék, Orális Medicina Részleg
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Szabó A, Varga R, Keresztes M, Vízler C, Németh I, Rázga Z, Boros M. Ischemic limb preconditioning downregulates systemic inflammatory activation. J Orthop Res 2009; 27:897-902. [PMID: 19105227 DOI: 10.1002/jor.20829] [Citation(s) in RCA: 14] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We examined local and systemic antiinflammatory consequences of ischemic preconditioning (IPC) in a rat model of limb ischemia-reperfusion (I-R) by characterizing the leukocyte-endothelial interactions in the periosteum and the expression of adhesion molecules playing a role in leukocyte-mediated inflammatory processes. IPC induction (2 cycles of 10 min of complete limb ischemia and 10 min of reperfusion) was followed by 60 min of ischemia/180 min of reperfusion or sham-operation. Data were compared with those on animals subjected to I-R and sham-operation. Neutrophil leukocyte-endothelial cell interactions (intravital videomicroscopy), intravascular neutrophil activation (CD11b expression changes by flow cytometry), and soluble and tissue intercellular adhesion molecule-1 (ICAM-1; ELISA and immunohistochemistry, respectively) expressions were assessed. I-R induced enhanced leukocyte rolling and adherence in the periosteal postcapillary venules after 120 and 180 min of reperfusion. This was associated with a significantly enhanced CD11b expression (by approximately 80% and 72%, respectively) and moderately increased soluble and periosteal ICAM-1 expressions. IPC prevented the I-R-induced increases in leukocyte adherence and CD11b expression without influencing the soluble and tissue ICAM-1 levels. The results show that limb IPC exerts not only local, but distant antiinflammatory effects through significant modulation of neutrophil recruitment.
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Affiliation(s)
- Andrea Szabó
- Institute of Surgical Research, University of Szeged, H-6720 Szeged, Pécsi u. 6, Hungary.
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Molnár T, Farkas K, Nagy F, Németh I, Wittmann T. Topically administered infliximab can work in ulcerative proctitis despite the ineffectiveness of intravenous induction therapy. Am J Gastroenterol 2009; 104:1857-8. [PMID: 19436284 DOI: 10.1038/ajg.2009.147] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Petrovay F, Balla E, Németh I, Gönczöl É. Genotyping of Chlamydia trachomatis from the endocervical specimens of high-risk women in Hungary. J Med Microbiol 2009; 58:760-764. [PMID: 19429752 DOI: 10.1099/jmm.0.008607-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The distribution of different Chlamydia trachomatis serovars in Hungary has not been reported previously. The objective of this study was to determine the distribution and prevalence of C. trachomatis serovars in a high-risk population by genotyping. The endocervical specimens of 484 female sex workers (FSWs) were screened for C. trachomatis by plasmid PCR. Genotyping was performed in all C. trachomatis-positive samples by PCR-based RFLP analysis of the omp1 gene. A total of 32 specimens (6.6 %) were positive for C. trachomatis. Age was an important risk factor for C. trachomatis infection in FSWs. The highest prevalence was detected in women under the age of 20 (18.8 %). All positive specimens were successfully genotyped and seven serovars were identified. The most prevalent was serovar D (34.4 %), followed by E (21.9 %), F (18.8 %), G (9.4 %), J (9.4 %), H (3.1 %) and I (3.1 %). A heterogeneous distribution of C. trachomatis serovars was observed in the study group, where the most common serovars were D, E and F comprising 75 % of the positive samples. This PCR-based RFLP method could be used in epidemiological studies on the prevalence of C. trachomatis infection to provide more information and to compare the serovar distribution among different cohorts.
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Affiliation(s)
- Fruzsina Petrovay
- Department of Bacteriology, National Centre for Epidemiology, Budapest, Hungary
| | - Eszter Balla
- Department of Bacteriology, National Centre for Epidemiology, Budapest, Hungary
| | - István Németh
- Developmental Drug Metabolism and Pharmacokinetics, Gedeon Richter Plc, Budapest, Hungary
| | - Éva Gönczöl
- Department of Virology, National Centre for Epidemiology, Budapest, Hungary
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Németh I, Nyitrai V, Altbäcker V. Ambient temperature and annual timing affect torpor bouts and euthermic phases of hibernating European ground squirrels (Spermophilus citellus). CAN J ZOOL 2009. [DOI: 10.1139/z08-150] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The low body temperature state of hibernating mammals is interrupted regularly by short euthermic phases. The frequency of these euthermic phases changes according to the phase of hibernation. This typical pattern, common among ground squirrels (genus Spermophilus F. Cuvier, 1825), can be regulated by internal factors and affected by outside temperature. To evaluate the effects of internal annual timing and ambient temperature, we monitored nest temperatures of overwintering European ground squirrels ( Spermophilus citellus (L., 1766)) under three temperature conditions during late hibernation (9, 5, 0 °C). Our results showed that in spite of constant thermal conditions, an annual timing effect changed torpor-bout length (TBL) at 9 and 5 °C but not at 0 °C. Ambient temperature had an independent influence on TBL and euthermic phases. The loss in body mass was higher at higher ambient temperatures and was affected by TBL and euthermic phases. Thus, the hibernation pattern of European ground squirrels is regulated by both an annual timing pattern and the ambient temperature in the hibernacula.
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Affiliation(s)
- István Németh
- Department of Ethology, Eötvös Loránd University, 1117 Budapest, Pázmány Péter sétány 1/C, Hungary
| | - Viktor Nyitrai
- Department of Ethology, Eötvös Loránd University, 1117 Budapest, Pázmány Péter sétány 1/C, Hungary
| | - Vilmos Altbäcker
- Department of Ethology, Eötvös Loránd University, 1117 Budapest, Pázmány Péter sétány 1/C, Hungary
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