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Kakagia DD, Georgiadis G, Drosos G. Dermal Matrices: Game Changers in Leg and Foot Soft Tissue Reconstruction? A Case Series. Int J Low Extrem Wounds 2023; 22:56-62. [PMID: 34060922 DOI: 10.1177/1534734621990311] [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] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The present article aims to present the use of dermal matrices in severe degloving, avulsion, and necrotizing injuries of the leg and foot in 3 patients. Conventional reconstruction would require the use of free flaps, since exposure of vessels, nerves, joints, and tendons rendered the mere resurfacing with skin grafts insufficient, and extensive cutaneous detachment precluded the use of local fasciocutaneous flaps. All injuries underwent thorough and repeated surgical debridements and wash outs, followed by negative pressure wound therapy (NPWT). Once negative tissue cultures were obtained, the extremities were resurfaced with dermal matrix and immediately covered by split thickness skin grafts. NPWT on the grafted area for a week effectively secured the grafts on the recipient area. Complete healing was achieved in all grafted areas within 7 to 12 days. The function of joints and tendons as well as the quality of resurfacing at the weight bearing areas were tested and found satisfactory within a follow-up period of 5 to 15 months. The use of combined NPWT and dermal matrices in carefully selected patients provides a reliable and durable reconstructive option for leg and foot injuries with satisfactory functional outcomes.
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Affiliation(s)
| | | | - George Drosos
- Democritus University Hospital, Alexandroupolis, Greece
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2
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Giordano G, Kyriazi E, Mavridis C, Persico F, Fragkoulis C, Gatto P, Georgiadis G, Giagourta I, Glykas I, Hurle R, Lazzeri M, Lughezzani G, Magnano San Lio V, Mamoulakis C, Meo D, Papadaki HA, Piaditis G, Pontikoglou C, Stathouros G. Oncology and complications. ACTA ACUST UNITED AC 2021; 93:71-76. [PMID: 33754613 DOI: 10.4081/aiua.2021.1.71] [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: 03/19/2021] [Indexed: 11/23/2022]
Abstract
This collection of cases describes some unusual urological tumors and complications related to urological tumors and their treatment. Case 1: A case of uretero-arterial fistula in a patient with long-term ureteral stenting for ureteral oncological stricture and a second case associated to retroperitoneal fibrosis were described. Abdominal CT, pyelography, cystoscopy were useful to show the origin of the bleeding. Angiography is useful for confirming the diagnosis and for subsequent positioning of an endovascular prosthesis which represents a safe approach with reduced post-procedural complications. Case 2: A case of patient who suffered from interstitial pneumonitis during a cycle of intravesical BCG instillations for urothelial cancer. The patient was hospitalized for more than two weeks in a COVID ward for a suspected of COVID-19 pneumonia, but he did not show any evidence of SARS-CoV-2 infection during his hospital stay. Case 3: A case of a young man with a functional urinary bladder paraganglioma who was successfully managed with complete removal of the tumor, leaving the urinary bladder intact. Case 4: A case of a 61 year old male suffering from muscle invasive bladder cancer who was admitted for a radical cystectomy and on the eighth postoperative day developed microangiopathic hemolytic anemia and thrombocytopenia, which clinically defines thrombotic microangiopathy.
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Affiliation(s)
- Giuseppe Giordano
- Unit of Diagnostic and Interventional Radiology, ARNAS "Garibaldi-Nesima", Catania.
| | - Evangelia Kyriazi
- Endocrinology Department, General Hospital of Athens "G. Gennimatas", Athens.
| | - Charalampos Mavridis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete.
| | - Francesco Persico
- Humanitas Clinical and Research Center - IRCCS, Department of Urology, Rozzano, Milan; University of Naples Federico II, Department of Neurosciences, Sciences of Reproduction, and Odontostomatology, Naples.
| | | | - Piergiorgio Gatto
- Ospedale di Sestri Levante - ASL 4 Liguria, Dipartimento Medico ad Elevata Integrazione Territoriale, Sestri Levante.
| | - George Georgiadis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete.
| | - Irene Giagourta
- Endocrinology Department, General Hospital of Athens "G. Gennimatas", Athens.
| | - Ioannis Glykas
- Urology Department, General Hospital of Athens "G. Gennimatas", Athens.
| | - Rodolfo Hurle
- Humanitas Clinical and Research Center - IRCCS, Department of Urology, Rozzano, Milan.
| | - Massimo Lazzeri
- Humanitas Clinical and Research Center - IRCCS, Department of Urology, Rozzano, Milan.
| | - Giovanni Lughezzani
- Humanitas Clinical and Research Center - IRCCS, Department of Urology, Rozzano, Milan; Humanitas University, Department of Biomedical Sciences, Rozzano, Milan.
| | | | - Charalampos Mamoulakis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete.
| | - Diego Meo
- Unit of Diagnostic and Interventional Radiology, ARNAS "Garibaldi-Nesima", Catania.
| | - Helen A Papadaki
- Department of Hematology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete.
| | - George Piaditis
- Endocrinology Department, General Hospital of Athens "G. Gennimatas", Athens.
| | - Charalampos Pontikoglou
- Department of Hematology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete.
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3
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Hashemzaei M, Mamoulakis C, Tsarouhas K, Georgiadis G, Lazopoulos G, Tsatsakis A, Shojaei Asrami E, Rezaee R. Crocin: A fighter against inflammation and pain. Food Chem Toxicol 2020; 143:111521. [DOI: 10.1016/j.fct.2020.111521] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/07/2020] [Accepted: 06/08/2020] [Indexed: 02/06/2023]
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Iordache AM, Buga AM, Albulescu D, Vasile RC, Mitrut R, Georgiadis G, Zisis IE, Mamoulakis C, Tsatsakis A, Docea AO, Calina D. Phosphodiesterase-5 inhibitors ameliorate structural kidney damage in a rat model of contrast-induced nephropathy. Food Chem Toxicol 2020; 143:111535. [PMID: 32622850 DOI: 10.1016/j.fct.2020.111535] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/11/2020] [Accepted: 06/13/2020] [Indexed: 12/11/2022]
Abstract
The aim of the study was to investigate the potential of sildenafil and tadalafil to ameliorate structural kidney damage in contrast-induced nephropathy (CIN). A rat model of CIN was developed by dehydration, administration of a nitric oxide inhibitor and a prostaglandin synthesis inhibitor (L-NAME/indomethacin) and contrast media exposure to iopromide. The effect of pre-treatment with sildenafil, tadalafil or N-acetyl cysteine (NAC) for 7 days prior to CIN induction was investigated. All animals were sacrificed at 24 h after CIN induction and both kidneys were collected. Histopathological examination was performed under light microscopy in serial tissue sections stained with hematoxylin and eosin. CIN group showed hydropic changes of the renal tubules (proximal and distal convoluted tubules and Henle's loop), an increased Bowman space with lobulated glomerulus and alteration of macula densa region of distal convolute tubules. The groups pretreated with sildenafil and tadalafil showed nearly normal histological aspects of renal tissue. The group pretreated with NAC showed similar but less intense histopathologic changes compared to CIN group. Sildenafil and tadalafil pre-treatment ameliorates CIN-related structural kidney damage and the protective potential of these agents is superior to NAC.
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Affiliation(s)
- Andrei Mihai Iordache
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania.
| | - Ana Maria Buga
- Department of Biochemistry, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania.
| | - Dana Albulescu
- Department of Radiology, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania.
| | - Ramona Constantina Vasile
- Department of Epidemiology and Primary Healthcare, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania.
| | - Radu Mitrut
- Department of Cardiology, University and Emergency Hospital, 050098, Bucharest, Romania.
| | - George Georgiadis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece; Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, Heraklion, Crete, 71003, Greece.
| | - Ioannis-Erineos Zisis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece; Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, Heraklion, Crete, 71003, Greece.
| | - Charalampos Mamoulakis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece.
| | - Aristidis Tsatsakis
- Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, Heraklion, Crete, 71003, Greece.
| | - Anca Oana Docea
- Department of Toxicology, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania.
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania.
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Vasilopoulos E, Fragkiadaki P, Kalliora C, Fragou D, Docea AO, Vakonaki E, Tsoukalas D, Calina D, Buga AM, Georgiadis G, Mamoulakis C, Makrigiannakis A, Spandidos DA, Tsatsakis A. The association of female and male infertility with telomere length (Review). Int J Mol Med 2019; 44:375-389. [PMID: 31173155 PMCID: PMC6605974 DOI: 10.3892/ijmm.2019.4225] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [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: 04/16/2019] [Accepted: 05/24/2019] [Indexed: 12/28/2022] Open
Abstract
Telomere length (TL) has long been associated with aging, as telomeres serve as protective caps of chromosomes, and are thus deeply involved in the preservation of genome integrity and are vital to cellular functions. Traditionally, a strong link connects aging and infertility in both sexes, with an earlier onset in females. Over the past decade, telomeres have attracted increasing attention due to the role they play in fertility. In this review, we investigated the potential positive or negative association between relative TL and different factors of female and male infertility. A systematic search of the PubMed database was conducted. Out of the 206 studies identified, 45 were reviewed as they fulfilled the criteria of validity and relevance. Following an analysis and a comparison of the study outcomes, several clear trends were observed. The majority of female infertility factors were associated with a shorter TL, with the exception of endometriosis, premature ovarian failure and clear cell carcinoma that were associated with a longer TL and polycystic ovary syndrome (PCOS), which revealed conflicting results among several studies, leading to ambiguous conclusions. Male infertility factors were associated with a shorter TL. Although this review can provide an outline of general trends in the association of TL with infertility factors, further epidemiological and original research studies are required to focus on investigating the basis of these varying lengths of telomeres.
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Affiliation(s)
| | - Persefoni Fragkiadaki
- Laboratory of Toxicology, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Charikleia Kalliora
- Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Domniki Fragou
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Anca Oana Docea
- Department of Toxicology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Elena Vakonaki
- Laboratory of Toxicology, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Dimitris Tsoukalas
- Laboratory of Toxicology, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Ana Maria Buga
- Department of Biochemistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - George Georgiadis
- Department of Urology, University General Hospital of Heraklion, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Charalampos Mamoulakis
- Department of Urology, University General Hospital of Heraklion, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Antonios Makrigiannakis
- Department of Obstetrics and Gynecology, University General Hospital of Heraklion, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Demetrios A Spandidos
- Laboratory of Clinical Virology, School of Medicine, University of Crete, 71003 Heraklion, Greece
| | - Aristidis Tsatsakis
- Laboratory of Toxicology, Medical School, University of Crete, 71003 Heraklion, Greece
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6
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Georgiadis G, Mavridis C, Belantis C, Zisis IE, Skamagkas I, Fragkiadoulaki I, Heretis I, Tzortzis V, Psathakis K, Tsatsakis A, Mamoulakis C. Nephrotoxicity issues of organophosphates. Toxicology 2018; 406-407:129-136. [PMID: 30063941 DOI: 10.1016/j.tox.2018.07.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [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: 06/09/2018] [Revised: 07/15/2018] [Accepted: 07/25/2018] [Indexed: 12/12/2022]
Abstract
Organophosphates are a large class of chemicals, initially invented in 1850 and since then they have been applied in numerous aspects of science to serve our purposes. Their mechanism of action in living organisms involves the irreversible inhibition of acetylcholinesterase, therefore they interfere with neuromuscular signal transmission. Due to the systematic and exaggerated use of these chemicals, there is massive exposure to them, hence there is great concern regarding the ramifications to all mammalian organisms. It has been widely accepted that over-exposure to organophosphates, has a deleterious impact on the renal tissue and subsequently on the renal function. Despite the significance of this global issue, limited knowledge exists, regarding the effect of these substances on our health. Therefore, new and extensive research is required to expand our knowledge and ensure proper guidance regarding the use of organophosphates as well the protection against their detrimental consequences. The aim of this review is to negotiate the effect of organophosphate exposure on renal tissue and kidney function.
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Affiliation(s)
- G Georgiadis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
| | - C Mavridis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
| | - C Belantis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
| | - I E Zisis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
| | - I Skamagkas
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
| | - I Fragkiadoulaki
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece; Department of Forensic Sciences and Toxicology, University of Crete, Medical School, Heraklion, Crete, Greece
| | - I Heretis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
| | - V Tzortzis
- Department of Urology, University of Thessaly, Larissa, Greece
| | - K Psathakis
- Department of Forensic Sciences and Toxicology, University of Crete, Medical School, Heraklion, Crete, Greece
| | - A Tsatsakis
- Department of Forensic Sciences and Toxicology, University of Crete, Medical School, Heraklion, Crete, Greece.
| | - C Mamoulakis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
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7
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Georgiadis G, Zisis I, Mpelantis C, Mavridis C, Skamagkas C, Heretis I, Mamoulakis C. Our experience in retrograde intra renal surgery with a single-use digital flexible ureteroscope in a tertiary academic endourological center. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/s1569-9056(18)32520-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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8
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Kapinas K, Kimiskidis VK, Kazis AD, Kokkasi B, Tsolaki M, Georgiadis G. Myasthenia Gravis: Correlation of Age with Clinical Course and Anti-Achr Antibody Levels. Int J Immunopathol Pharmacol 2018. [DOI: 10.1177/205873929901200303] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- K. Kapinas
- C Department of Neurology, (G. Papanikolaou Hospital) and Department of Pharmacology', Medical School, Aristotle University of Thessaloniki_Greece
| | - V. K. Kimiskidis
- C Department of Neurology, (G. Papanikolaou Hospital) and Department of Pharmacology', Medical School, Aristotle University of Thessaloniki_Greece
| | - A. D. Kazis
- C Department of Neurology, (G. Papanikolaou Hospital) and Department of Pharmacology', Medical School, Aristotle University of Thessaloniki_Greece
| | - B. Kokkasi
- C Department of Neurology, (G. Papanikolaou Hospital) and Department of Pharmacology', Medical School, Aristotle University of Thessaloniki_Greece
| | - M. Tsolaki
- C Department of Neurology, (G. Papanikolaou Hospital) and Department of Pharmacology', Medical School, Aristotle University of Thessaloniki_Greece
| | - G. Georgiadis
- C Department of Neurology, (G. Papanikolaou Hospital) and Department of Pharmacology', Medical School, Aristotle University of Thessaloniki_Greece
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9
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Affiliation(s)
- Julia S. Fürstenau Oliveira
- Department of Biometry and Environmental System Analysis; University of Freiburg; Tennenbacher Straße 4 79106 Freiburg Germany
| | - George Georgiadis
- Instituto Araguaia de Proteção Ambiental; Parque Estadual do Cantão, Rodovia TO-080 Caseara Tocantins CEP 77680-000 Brazil
| | - Silvana Campello
- Instituto Araguaia de Proteção Ambiental; Parque Estadual do Cantão, Rodovia TO-080 Caseara Tocantins CEP 77680-000 Brazil
| | - Reuber A. Brandão
- Laboratório de Fauna e Unidades de Conservação; Departamento de Engenharia Florestal; Universidade de Brasília; Brasilia - DF CEP 70910-900 Brazil
| | - Simone Ciuti
- Department of Biometry and Environmental System Analysis; University of Freiburg; Tennenbacher Straße 4 79106 Freiburg Germany
- School of Biology and Environmental Science; University College Dublin; Belfield Dublin 4 Ireland
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10
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Tsiodras S, Spanakis N, Spanakos G, Pervanidou D, Georgakopoulou T, Campos E, Petra T, Kanellopoulos P, Georgiadis G, Antalis E, Kontos V, Giannopoulos LA, Tselentis Y, Papa A, Tsakris A, Saroglou G. Fatal human anaplasmosis associated with macrophage activation syndrome in Greece and the Public Health response. J Infect Public Health 2017; 10:819-823. [PMID: 28189511 DOI: 10.1016/j.jiph.2017.01.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 07/05/2016] [Revised: 11/22/2016] [Accepted: 01/07/2017] [Indexed: 01/28/2023] Open
Abstract
Human granulocytic anaplasmosis (HGA) is a tick-borne disease caused by Anaplasma phagocytophilum that has the potential to spread in new geographical areas. The first fatal case of HGA in Greece is presented. Fever of unknown origin, renal and respiratory insufficiency and development of macrophage activation syndrome characterized the clinical presentation. Amplification and sequencing of a fragment of the groEL gene revealed the presence of A. phagocytophilum. The epidemiological and clinical features were collected during an epidemiological investigation. Public health measures were instituted by the Hellenic Centre for Disease Control and Prevention. The Public Health intervention required the collaboration of epidemiologists, veterinarians and microbiologists. Emphasis was given to communication activities and misconceptions concerning canines and their role in the disease. The emergence of human anaplasmosis in a new geographical area highlights the importance of disease awareness and of the need for continued support for tick and tick-borne disease surveillance networks.
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Affiliation(s)
- Sotirios Tsiodras
- 4th Department of Internal Medicine, University General Hospital "Attikon", National & Kapodistrian University of Athens Medical School, Athens, Greece; The Hellenic Centre for Disease Control and Prevention, Athens, Greece.
| | - Nikos Spanakis
- Department of Microbiology, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Gregory Spanakos
- The Hellenic Centre for Disease Control and Prevention, Athens, Greece
| | - Danai Pervanidou
- The Hellenic Centre for Disease Control and Prevention, Athens, Greece
| | | | | | | | | | | | - Emmanouil Antalis
- 4th Department of Internal Medicine, University General Hospital "Attikon", National & Kapodistrian University of Athens Medical School, Athens, Greece
| | - Vassileios Kontos
- Department of Parasitology, Entomology and Tropical Diseases, National School of Public Health, Athens, Greece
| | | | - Yiannis Tselentis
- Laboratory of Clinical Bacteriology, Parasitology, Zoonoses and Geographic Medicine, WHO Collaborating Center for Mediterranean Zoonoses, University of Crete, Heraklion, Crete, Greece
| | - Anna Papa
- Department of Microbiology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Athanassios Tsakris
- Department of Microbiology, National and Kapodistrian University of Athens Medical School, Athens, Greece
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11
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Lambropoulos K, Kaklamanis K, Morphis A, Tassi M, Lopp R, Georgiadis G, Theodorakou M, Chatzieleftheriou M, Simserides C. Wire and extended ladder model predict THz oscillations in DNA monomers, dimers and trimers. J Phys Condens Matter 2016; 28:495101. [PMID: 27731310 DOI: 10.1088/0953-8984/28/49/495101] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We call monomer a B-DNA base pair and study, analytically and numerically, electron or hole oscillations in monomers, dimers and trimers. We employ two tight binding (TB) approaches: (I) at the base-pair level, using the on-site energies of the base pairs and the hopping parameters between successive base pairs i.e. a wire model, and (II) at the single-base level, using the on-site energies of the bases and the hopping parameters between neighbouring bases, specifically between (a) two successive bases in the same strand, (b) complementary bases that define a base pair, and (c) diagonally located bases of successive base pairs, i.e. an extended ladder model since it also includes the diagonal hoppings (c). For monomers, with TB II, we predict periodic carrier oscillations with frequency [Formula: see text]-550 THz. For dimers, with TB I, we predict periodic carrier oscillations with [Formula: see text]-100 THz. For trimers made of identical monomers, with TB I, we predict periodic carrier oscillations with [Formula: see text]-33 THz. In other cases, either with TB I or TB II, the oscillations may be not strictly periodic, but Fourier analysis shows similar frequency content. For dimers and trimers, TB I and TB II are successfully compared giving complementary aspects of the oscillations.
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Affiliation(s)
- K Lambropoulos
- National and Kapodistrian University of Athens, Department of Physics, Panepistimiopolis, 15784 Zografos, Athens, Greece
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12
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Dermitzakis EV, Kimiskidis VK, Lazaridis G, Alexopoulou Z, Timotheadou E, Papanikolaou A, Romanidou O, Georgiadis G, Kalogeras KT, Tsiptsios I, Tarlatzis B, Fountzilas G. The impact of paclitaxel and carboplatin chemotherapy on the autonomous nervous system of patients with ovarian cancer. BMC Neurol 2016; 16:190. [PMID: 27716097 PMCID: PMC5045633 DOI: 10.1186/s12883-016-0710-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 06/10/2016] [Indexed: 11/10/2022] Open
Abstract
Background Paclitaxel-based regimens are frequently associated with the development of peripheral neuropathy. The autonomous nervous system (ANS) effects, however, of this chemotherapeutic agent remain unexplored. Methods We investigated a group of 31 female patients with ovarian cancer receiving treatment with paclitaxel and carboplatin, as well as a group of 16 healthy age- and gender-matched healthy volunteers. All study participants completed a questionnaire and were assessed neurophysiologically at three time points (baseline, 3–4 months and 6–8 months following the onset of chemotherapy). The evaluation of the ANS included assessment of the adrenergic cardiovascular function (orthostatic hypotension-OH), parasympathetic heart innervation (30/15 ratio) and sympathetic skin response (SSR). Results At the 3–4 months ANS assessment, 19.2 % of the patients had systolic OH and the same percentage had diastolic OH, but at the 6–8 months evaluation no patient had systolic OH and only 13.8 % had diastolic OH. The values of the 30/15 ratio were significantly reduced at both time points, whereas the SSR was not affected. Conclusions Combined paclitaxel and carboplatin chemotherapy is associated with significant effects on the parasympathetic heart innervation and occasionally with effects on the adrenergic cardiovascular reaction. The SSR remained unaffected. Physicians should be alert to the possibility of these treatment-emergent side effects, so as to monitor ANS parameters and introduce treatment modifications accordingly. Our findings however, should be validated in larger cohorts. Electronic supplementary material The online version of this article (doi:10.1186/s12883-016-0710-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Emmanouil V Dermitzakis
- Laboratory of Clinical Neurophysiology, Department of Neurology, "Papageorgiou" Hospital, Thessaloniki, 564 03, Greece.
| | - Vasilios K Kimiskidis
- Laboratory of Clinical Neurophysiology, Aristotle University of Thessaloniki, Faculty of Medicine, Thessaloniki, Greece
| | - George Lazaridis
- Department of Medical Oncology, School of Health Sciences, Faculty of Medicine, "Papageorgiou" Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Zoi Alexopoulou
- Department of Biostatistics, Health Data Specialists Ltd, Athens, Greece
| | - Eleni Timotheadou
- Department of Medical Oncology, School of Health Sciences, Faculty of Medicine, "Papageorgiou" Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Alexandros Papanikolaou
- First Department of Obstetrics and Gynecology, School of Health Sciences, Faculty of Medicine, "Papageorgiou" Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ourania Romanidou
- Department of Medical Oncology, School of Health Sciences, Faculty of Medicine, "Papageorgiou" Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - George Georgiadis
- Neurological Department, "Hippocration" General Hospital, Thessaloniki, Greece
| | - Konstantine T Kalogeras
- Laboratory of Molecular Oncology, Hellenic Foundation for Cancer Research/Aristotle University of Thessaloniki, Thessaloniki, Greece.,Translational Research Section, Hellenic Cooperative Oncology Group, Data Office, Athens, Greece
| | - Iakovos Tsiptsios
- Laboratory of Clinical Neurophysiology, Department of Neurology, "Papageorgiou" Hospital, Thessaloniki, 564 03, Greece
| | - Basil Tarlatzis
- First Department of Obstetrics and Gynecology, School of Health Sciences, Faculty of Medicine, "Papageorgiou" Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - George Fountzilas
- Laboratory of Molecular Oncology, Hellenic Foundation for Cancer Research/Aristotle University of Thessaloniki, Thessaloniki, Greece
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Voulgari E, Politi L, Pitiriga V, Dendrinos J, Poulou A, Georgiadis G, Tsakris A. First report of an NDM-1 metallo-β-lactamase-producing Acinetobacter baumannii clinical isolate in Greece. Int J Antimicrob Agents 2016; 48:761-762. [PMID: 27773496 DOI: 10.1016/j.ijantimicag.2016.09.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 09/12/2016] [Indexed: 11/16/2022]
Affiliation(s)
- Evangelia Voulgari
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Lida Politi
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Vassiliki Pitiriga
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | | | - Aggeliki Poulou
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | | | - Athanassios Tsakris
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece.
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Zissis NP, Harmoussi S, Vlaikidis N, Mitsikostas D, Thomaidis T, Georgiadis G, Karageorgiou K. A Randomized, Double-Blind, Placebo-Controlled Study of Venlafaxine XR in Out-Patients With Tension-Type Headache. Cephalalgia 2016; 27:315-24. [PMID: 17346304 DOI: 10.1111/j.1468-2982.2007.01300.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The aim of this study was to evaluate in a double-blind, randomized, placebo-controlled study the safety and efficacy of venlafaxine extended release (XR) in the prophylactic treatment of out-patients with tension-type headache (TTH) and no current depression or anxiety disorders. Sixty neurology and headache clinic out-patients meeting the International Headache Society diagnostic criteria for TTH were treated with venlafaxine XR (150 mg/day, n = 34) or placebo ( n = 26) for 12 weeks. The primary efficacy variable was the decline in number of days with headache. At end-point, the venlafaxine XR group had a significantly greater decrease in the number of days with headache compared with placebo ( P = 0.05). Differences with regard to secondary efficacy variables where not significant. The number needed to treat for responders (≥50% reduction in days with headache) was 3.48. Six patients in the venlafaxine XR group interrupted therapy due to adverse events, while no patients in the placebo group did so for the same reason. The number needed to harm was 5.58. This study provides preliminary evidence for the efficacy and safety of venlafaxine XR 150 mg/day in reducing the number of days with TTH.
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Affiliation(s)
- N P Zissis
- Medical Department, Wyeth Hellas, Athens, Greece.
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Georgiadis G, Bonatsos V, Koulouris A, Girling J, Foroutan-Sabzevari H, Gupta S. Isolated peripheral nerve sheath tumour involving the urinary bladder neck. Journal of Clinical Urology 2016. [DOI: 10.1177/2051415814528326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- G Georgiadis
- James Paget University Hospital, UK
- Maidstone & Tunbridge Wells NHS Trust, Maidstone Hospital, UK
| | | | - A Koulouris
- James Paget University Hospital, UK
- Norfolk and Norwich University Hospital, UK
| | | | | | - S Gupta
- James Paget University Hospital, UK
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Dermitzakis EV, Kimiskidis VK, Eleftheraki A, Lazaridis G, Konstantis A, Basdanis G, Tsiptsios I, Georgiadis G, Fountzilas G. The impact of oxaliplatin-based chemotherapy for colorectal cancer on the autonomous nervous system. Eur J Neurol 2014; 21:1471-7. [PMID: 25041285 DOI: 10.1111/ene.12514] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 05/26/2014] [Indexed: 12/16/2022]
Abstract
BACKGROUND The oxaliplatin (ΟΧΑ)-based regimens FOLFOX and XELOX can cause peripheral neuropathy. It is unknown if ΟΧΑ, alone or in combination regimens, affects the Autonomous Nervous System (ANS). Accordingly, we evaluated the impact of ΟΧΑ-based chemotherapy on the ANS. METHODS We enrolled 36 patients with colorectal cancer, treated with adjuvant mFOLFOX6 or XELOX chemotherapy, and 22 healthy volunteers. For the assessment of ANS function, participants completed a questionnaire and underwent neurophysiological examination at three time points (baseline, 3-4 months and 6-8 months after the first chemotherapy cycle). ANS testing included assessment of the adrenergic cardiovascular function (orthostatic hypotension-OH), parasympathetic heart innervation (ratio 30/15) and Sympathetic Skin Response (SSR). RESULTS The values of the 30/15 ratio were significantly reduced at the two time point assessments compared to baseline (Wilcoxon signed ranks test, both P < 0.001), while patients had more often diastolic OH at the 6-8 month evaluation compared to baseline (P = 0.039). In contrast, SSR was not affected. The incidence of positive responses in the questionnaire assessing the subjective impact of symptoms attributable to ANS dysfunction was higher at the two time points compared to baseline (P = 0.036 and P = 0.020). CONCLUSIONS Oxaliplatin-based chemotherapy is associated with significant effects on the adrenergic cardiovascular reaction and the parasympathetic heart innervation, whereas SSR remains untouched.
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Affiliation(s)
- E V Dermitzakis
- Laboratory of Clinical Neurophysiology, Department of Neurology, "Papageorgiou" Hospital, Thessaloniki, Greece
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Georgakarakos E, Georgiadis G, Lazarides MK. Peripheral vascular ultrasound examinations are important in ultrasound training for medical students. Acad Med 2013; 88:1198. [PMID: 23982503 DOI: 10.1097/acm.0b013e31829e8501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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18
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Giza E, Katsarou Z, Georgiadis G, Bostantjopoulou S. Sympathetic skin response in Parkinson's disease before and after mental stress. Neurophysiol Clin 2012; 42:125-31. [DOI: 10.1016/j.neucli.2011.11.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Revised: 10/23/2011] [Accepted: 11/01/2011] [Indexed: 01/22/2023] Open
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Lyras DN, Kazakos K, Georgiadis G, Mazis G, Middleton R, Richards S, O'Connor D, Agrogiannis G. Does a single application of PRP alter the expression of IGF-I in the early phase of tendon healing? J Foot Ankle Surg 2011; 50:276-82. [PMID: 21440462 DOI: 10.1053/j.jfas.2011.02.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [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: 07/26/2009] [Indexed: 02/03/2023]
Abstract
The purpose of this study was to determine whether or not a single application of platelet-rich plasma (PRP) in a ruptured tendon alters the expression of IGF-I in the early phase of healing in an animal wound model. We performed an Achilles tendon rupture model on 48 New Zealand white rabbits, by transecting the tendon transversely and then injecting 0.5 mL of PRP into the tendon mass on one side, and injecting saline on the contralateral, control side. Twenty-four animals received PRP (PRP group), and 24 animals served as untreated controls (control group). Six animals (12 limbs) were killed from each group at 1, 2, 3, and 4 weeks postoperatively. After the animals were killed, 6 paraffin sections were made from each Achilles tendon, 3 of which were stained with hematoxylin and eosin and subjected to microscopic examination, and 3 of which were immunostained with an anti-IGF-I primary antibody. Density of brown diaminobenzidine (DAB) staining was evaluated to quantitatively analyze the results. IGF-I was expressed intracellularly in various cell types throughout the entire healing phase. The growth factor was localized in the epitenon and the endotenon, with an overexpression in the epitenon in the PRP group by the fourth week in comparison with the controls. Furthermore, the tendons treated with PRP healed more rapidly. Based on these findings, PRP could be useful to surgeons treating ruptured tendon.
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Stamouli SS, Tzanakaki M, Giatas S, Georgiadis G, Papalexi E, Parashos IA. An open-label, multicenter observational study for patients with Alzheimer's disease treated with memantine in the clinical practice. Dement Geriatr Cogn Dis Extra 2011; 1:10-9. [PMID: 22163229 PMCID: PMC3199890 DOI: 10.1159/000322882] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Background/Aims In this post-marketing observational study, the safety and effectiveness of memantine were evaluated in patients with Alzheimer's disease (AD). Methods In a 6-month, observational, open-label study at 202 specialist sites in Greece, the effectiveness of memantine was evaluated using the Mini-Mental State Examination (MMSE) and the Instrumental Activities of Daily Living (IADL) scale at baseline, and after 3 and 6 months. Discontinuation rates and adverse drug reactions (ADRs) were also recorded to evaluate the safety profile of memantine. Results 2,570 patients participated in the study. Three and 6 months after baseline, MMSE and IADL scores were significantly improved compared to baseline. At the end of the study, 67% of the patients had improved their MMSE score; 7.1% of the patients reported ≥1 ADRs, and treatment was discontinued due to ADR in 0.7%. Conclusion Memantine was well tolerated and had a positive effect on the patient's cognitive and functional ability in real-life clinical practice, in agreement with randomized, controlled trials.
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Affiliation(s)
- S S Stamouli
- 1st Psychiatric Department, University of Athens, Eginition Hospital, Athens
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Lasithiotakis K, Petrakis I, Georgiadis G, Paraskakis S, Chalkiadakis G, Chrysos E. Pancreatic resection for metastasis to the pancreas from colon and lung cancer, and osteosarcoma. JOP 2010; 11:593-596. [PMID: 21068492] [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: 05/30/2023]
Abstract
CONTEXT Pancreatic resection for a metastatic colon, lung cancer or an osteosarcoma has rarely been reported in the literature and there is controversy regarding recurrence and the overall survival of these patients. We herein evaluate the outcome of three patients who underwent pancreaticoduodenectomy for the aforementioned metastatic tumors to the pancreas. CASE REPORTS Clinical presentation included pyloric stenosis and acute gastrointestinal bleeding. One patient was asymptomatic and was diagnosed during follow-up for colon cancer. All the pancreatic lesions were located in the head of the pancreas, and the intervals between the diagnosis of the primary cancer and the pancreatic metastases were 6, 14 and 24 months. During exploration of the abdomen, additional metastatic lesions in the small intestine and liver were detected and resected in two patients. One patient died one month after surgery from massive gastrointestinal bleeding. The other two patients experienced relief from their symptoms but died from generalized carcinomatosis 16 and 27 months after pancreaticoduodenectomy. CONCLUSION Pancreatic resection for metastatic disease may be suggested for selected patients, even those with limited extrapancreatic disease. In this setting, it may offer good palliation and may prolong survival. In cases of acute duodenal bleeding resistant to conservative measures, pancreaticoduodenectomy may represent the only alternative for survival; however, significant morbidity and mortality should be expected.
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Asouhidou I, Katsaridis V, Meng L, Zilianaki D, Vaidis G, Ioannou P, Georgiadis G. Desaturation during Onyx embolization. Br J Anaesth 2010; 105:385-6. [DOI: 10.1093/bja/aeq222] [Citation(s) in RCA: 7] [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: 11/14/2022] Open
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Mitsikostas DD, Vikelis M, Kodounis A, Zaglis D, Xifaras M, Doitsini S, Georgiadis G, Thomas A, Charmoussi S. Migraine recurrence is not associated with depressive or anxiety symptoms. Results of a randomized controlled trial. Cephalalgia 2010; 30:690-5. [DOI: 10.1111/j.1468-2982.2009.02017.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In order to investigate the plausible association of migraine recurrence with anxiety and depressive symptoms, a multicentre, randomized, double-blind, placebo-controlled, crossover clinical trial was conducted using sumatriptan as a vehicle drug. Migraineurs were randomly assigned to receive either 50 mg sumatriptan or placebo for three consecutive migraine attacks, and then cross over to the other treatment for three more migraine attacks. The primary measurements were the observed rate of migraine recurrence in relation to (i) patient's mood condition, measured by the Hamilton rating scales for depression and anxiety and (ii) patient's general health and functioning measured by the Symptom Checklist (SCL)-90-R. Migraine recurrence was defined as any migrainous headache that occurred within 24 h post treatment, only when pain free at 2 h was achieved. The analysis of efficacy was performed on 376 migraine attacks treated with sumatriptan and 373 attacks treated with placebo. Recurrence ratio was 14.1% and 5.1%, respectively ( P = 0.045). The number needed to treat for pain free at 2 h post dose was 5.4. Recurrence was not affected by Hamilton scores for depression or anxiety, SCL-90-R scores or treatment. Apparently, depressive or anxiety symptoms do not influence headache recurrence in acute pharmaceutical migraine treatment, but further investigation is required.
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Affiliation(s)
| | - M Vikelis
- Athens Naval Hospital, Athens, Greece
| | - A Kodounis
- 251 General Airforce Hospital, Athens, Greece
| | - D Zaglis
- Metropolitan General Hospital, Headache Clinic, Athens, Greece
| | - M Xifaras
- Nikea General Hospital, Neurology Department, Athens, Greece
| | | | - G Georgiadis
- Papageorgiou General Hospital, Neurology Department, Thessaloniki, Greece
| | - A Thomas
- Psychiatric Clinic Anagenissis, Larissa, Greece
| | - S Charmoussi
- Agios Dimitrios Hospital, Headache Clinic, Thessaloniki, Greece
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Betrosian AP, Frantzeskaki F, Xanthaki A, Georgiadis G. High-dose ampicillin-sulbactam as an alternative treatment of late-onset VAP from multidrug-resistant Acinetobacter baumannii. ACTA ACUST UNITED AC 2009; 39:38-43. [PMID: 17366011 DOI: 10.1080/00365540600951184] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The increased incidence of multidrug-resistant (MDR) Acinetobacter baumannii ventilator-associated pneumonia in critically ill patients poses a severe therapeutic problem. The aim of this study was to evaluate the efficacy and safety of 2 high-dose treatment regimens of ampicillin-sulbactam (A/S) for MDR Acinetobacter baumannii VAP. We undertook a randomized, prospective trial of critically ill patents with (MDR) Acinetobacter baumannii VAP. Patients were randomly assigned to 1 of 2 treatment regimens of A/S (at a rate 2:1 every 8 h): 1) group A, 18/9 g daily dose (n = 14); and 2) group B, 24/12 g daily dose (n = 13). The duration of therapy was 8+/-2 d for both groups. A total of 27 patients were enrolled in the study. Clinical improvement was seen in 66.7% of the study population in 9/14 (64.3%) of group A patients and 9/13 (69.2%) of group B patients, respectively. Bacteriological success was achieved in 77.8% of the study population (12/14, 85.7% of group A) and in 9/13 (69.2%) of group B patients. The 14-d mortality rate was 25.9% and the all cause 30-d mortality was 48.1%. Both mortality rates did not differ significantly between the 2 groups. No major adverse reactions were recorded. We concluded that clinical and bacteriological results of the study support the use of high-dose regimen of ampicillin-sulbactam for MDR Acinetobacter baumannii VAP.
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Affiliation(s)
- Alex P Betrosian
- Intensive Care Unit, Hippokration General Hospital, Athens, Greece.
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Asouhidou I, Asteri T, Sountoulides P, Natsis K, Georgiadis G. Early postoperative mortality in the elderly: a pilot study. BMC Res Notes 2009; 2:118. [PMID: 19570202 PMCID: PMC2716355 DOI: 10.1186/1756-0500-2-118] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2008] [Accepted: 07/01/2009] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND As the population ages and as surgical and anaesthetic techniques advance, more elderly people will be referred for surgery. Postoperative mortality and morbidity are certainly associated with increasing age; however the severity of coexisting medical conditions is an equally important risk factor. In the present study we tried to look into the aetiology of early postoperative morbidity of elderly patients following major surgery, in relation to their medical history. FINDINGS Fifty patients aged 70 to 95 years of age were enrolled in the study. All patients had undergone major elective orthopedic procedures due to either osteoarthritis of femoral head or femoral neck fracture. Patients were followed up by telephone interview one month following their discharge. 8 out of 50 patients (16%) were reported dead at follow up. For the majority of the patients who died, the cause of death was directly related to their previous medical history. CONCLUSION Despite the detailed preoperative evaluation, and the intensive intraoperative and early postoperative anaesthetic care, most patient's deaths were related to their previous medical history.
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Affiliation(s)
- Irene Asouhidou
- 2nd Department of Anesthesia G, Papanikolaou Regional Hospital, Thessaloniki, Greece.
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Fyntanidou B, Kemanetzi I, Vaidis G, Andreou A, Tsaprali V, Ioannou P, Dimitrakoulia E, Georgiadis G. 604. Neurostimulation During Vertical Infraclavicular Block: Is the Selection of the Stimulated Nerve Associated With the Success Rate of the Block? Reg Anesth Pain Med 2008. [DOI: 10.1136/rapm-00115550-200809001-00184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Fyntanidou B, Vaidis G, Kemanetzi I, Georgiou M, Andreou A, Ioannou P, Dimitrakoulia E, Georgiadis G, Papanikolaou G. 610. Ropivacaine 0.5% vs Ropivacaine 0.75% + Lidocaine 1% in Vertical Infraclavicular Block of Brachial Plexus for Upper Limb Surgery. Reg Anesth Pain Med 2008. [DOI: 10.1136/rapm-00115550-200809001-00230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Terzis G, Karampatsos G, Georgiadis G. Neuromuscular control and performance in shot-put athletes. J Sports Med Phys Fitness 2007; 47:284-90. [PMID: 17641594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
AIM The aim of this study was to investigate the relationship between the activation level of certain protagonist muscles of the upper and lower body during the shot-put with the shot-put performance in skilled athletes. METHODS Eight experienced right-handed shot-putters, performed the shot-put with the linear technique. They also performed a maximum (1RM) squat and a 1RM incline bench-press strength test. Electromyographic (EMG) signals were recorded from the m. quadriceps vastus lateralis (VL), m. gastrocnemius internus, m. pectoralis major (PEC) and the m. triceps brachii (TRI) of the right side during all efforts. The level of EMG during the shot-put was normalized relatively to that measured during the respective maximum strength test. RESULTS Shot-put performance was significantly correlated with 1RM squat (r=0.76, P<0.05) and 1RM bench-press (r=0.75, P<0.05) as well as with the average EMG from VL and PEC after taking the power position (r=0.91, P<0.01 and r=0.75, P<0.05, respectively). A close negative relationship was also found between shot-put performance and the time to reach peak activation of right TRI during the explosive strike of the throwing arm (r=-0.70, P<0.05). CONCLUSION These results suggest that, besides the importance of absolute muscle strength, an important parameter for shot-put performance is the level of activation of the VL and the PEC during the delivery phase. Furthermore, these data suggest that the TRI should be activated fast in order to be an effective contributor to the shot-put performance.
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Affiliation(s)
- G Terzis
- Track and Field Division, Department of Physical Education and Sport Science, University of Athens, Athens, Greece.
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Affiliation(s)
- G Georgiadis
- Department of Neurology, Papageorgiou General Hospital, Thessaloniki, Greece.
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Abstract
OBJECTIVE The aim of this study was to examine the prevalence of overweight and obesity in Greek school age children and adolescents. DESIGN Nationwide representative survey. SETTING Primary and secondary schools all over Greece. SUBJECTS In all, 6448 students (50.4% boys, 49.6% girls) 6-17 years old. METHOD A nationwide multistage procedure was followed to obtain a representative sample of youths. Body mass and height were measured by trained personnel. Data were collected between October 1990 and May 1991. RESULTS According to the 12-month-International Obesity Task Force cutoff values, the overall prevalence of overweight was 17.3% (16.9% for boys, 17.6% for girls). The rate of obesity was 3.6% (3.8% for boys, 3.3% for girls). The prevalence of overweight and obesity was decreasing with age in girls (6-9 years: 23.2 and 6.7%, respectively, 10-17 years: 14.8 and 1.6%, respectively). In boys, the prevalence of overweight was higher in 10-17 years (19.3 and 2.7%, for the rate of overweight and obesity, respectively) than in 6-9 years (12.1 and 5.9%, respectively). CONCLUSION The prevalence of overweight and obesity in Greek children and adolescents is comparable to that reported for most European countries.
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Affiliation(s)
- G Georgiadis
- Department of Physical Education and Sports Science, University of Athens, Daphne, Greece
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Giannakodimos ST, Georgiadis G, Tsounis ST, Triantafillou N, Kimiskidis V, Giatas K, Karlovasitou A, Mitsikostas DD, Thodi E, Polychronopoulos P, Ramopoulos N, Michailidis K, Michalis N, Garganis K, Gatzonis ST, Balogiannis ST, Kazis AR, Milonas J, Van Oene JC. Add-on topiramate in the treatment of refractory partial-onset epilepsy: clinical experience of outpatient epilepsy clinics from 11 general hospitals. Seizure 2005; 14:396-402. [PMID: 16019237 DOI: 10.1016/j.seizure.2005.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2004] [Indexed: 11/22/2022] Open
Abstract
An open, prospective, observational study was performed to assess efficacy and adverse-event profile of topiramate as add-on therapy in epilepsy. Outpatient neurology clinics from 11 general hospitals in Greece participated in the study. In total, 211 patients with treatment resistant partial-onset seizures who met the inclusion criteria, were studied. After baseline evaluation, topiramate was given at a target dose of 200mg/day over a 1-month titration period. In the subsequent maintenance period, the topiramate dose could be varied according to the clinical results. Patients were followed for in total 6 months, with monthly visits and regular physical, neurological and laboratory examinations. Seizure frequencies decreased to 35--40% of baseline values following 3 months of treatment and remained relatively constant thereafter. The average monthly seizure frequency over the 6-month study period was 4.61, compared to 9.21 at baseline. The number of responders (patients with at least 50% reduction in seizure frequency) followed a similar pattern, i.e., increase during the first 3 months levelling off at a final 80--85% response rate. Of those completing the study, 30% had been seizure-free for at least 3 months and 12% for 5 months. Topiramate was well tolerated, no deviations in laboratory values were found. Adverse events appeared to occur less frequently, and antiepileptic effects were more pronounced in this prospective open-label study than in earlier reports from randomised controlled trials. The nature of the patient population and the application of individualised dose optimisation are proposed as contributing factors to explain the favourable results of this study.
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Affiliation(s)
- S T Giannakodimos
- Neurology Clinic G. Gennimatas' General Hospital of Athens, 154 Mesogeion Av., 115 27 Athens, Greece
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Frantzeskaki F, Amygdalou A, Arvanitis M, Georgiadis G, Vassiliou MP, Behrakis PK. Linear and non linear analysis of respiratory mechanics in Acute Respiratory Distress Syndrom (ARDS). Chest 2004. [DOI: 10.1378/chest.126.4_meetingabstracts.720s] [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: 11/01/2022] Open
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Betrosian AP, Balla M, Papanikolaou M, Christopoulou M, Kitsios A, Farmakis E, Georgiadis G. Meningococcal Purpura Fulminans in a Patient with Systemic Lupus Erythematosus: A Mimic for Catastrophic Antiphospholipid Antibody Syndrome? Am J Med Sci 2004; 327:373-5. [PMID: 15201656 DOI: 10.1097/00000441-200406000-00016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Purpura fulminans (PF) is a life-threatening disorder characterized by acute onset of progressive cutaneous hemorrhage, necrosis, and disseminated intravascular coagulation. Acute infectious PF occurs most commonly in the setting of meningococcal sepsis. When PF occurs in the setting of systemic lupus erythematosus (SLE), the catastrophic antiphospholipid antibody syndrome (CAPS) must be ruled out because urgent therapy is required. Plasmapheresis is effective in both cases, but immunosuppression (high-dose corticosteroids plus cyclophosphamide), although beneficial in patients with CAPS, could be harmful in patients with meningococcal PF. The authors report here a patient with SLE who presented to the intensive care unit with meningococcal PF, acute renal failure, and acute respiratory distress syndrome and discuss clinical similarities and laboratory differences from CAPS.
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Affiliation(s)
- Alex P Betrosian
- Intensive Care Unit, Hippokration General Hospital, Athens, and the Intensive Care Unit, Corfu General Hospital, Corfu, Greece.
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Rudolf J, Koutlas E, Grivas G, Fitsioris X, Georgiadis G. Akutversorgung des Schlaganfalls in einem griechischen Krankenhaus der Maximalversorgung. Akt Neurol 2004. [DOI: 10.1055/s-2004-833217] [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: 10/28/2022]
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Terzis G, Georgiadis G, Vassiliadou E, Manta P. Relationship between shot put performance and triceps brachii fiber type composition and power production. Eur J Appl Physiol 2003; 90:10-5. [PMID: 12768426 DOI: 10.1007/s00421-003-0847-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2003] [Indexed: 10/26/2022]
Abstract
It is commonly accepted that shot put performance is mainly determined by the ability of the lower body to produce power. The purpose of the present study was to investigate the relationship between shot put performance and triceps brachii muscle fiber type composition and strength capacity. Thirteen male physical education students were selected to participate in the study based upon their shot put performance after 5 weeks of shot put technique instruction. At the completion of this technique-instruction period, they performed the following tests: shot put with a 6-kg shot, isokinetic torque measurements of the elbow extensors at 0, 0.52, 1.04, 1.57, 2.09, 3.14, and 4.19 rad.s(-1), maximal strength (1 RM) and explosive-throwing bench-press tests, one-arm seated shot put with 1-, 2-, 3-, 4-, 5- and 6-kg shot. Whole-body and dominant upper-arm bioimpedance measurements were used to estimate whole-body and upper-arm muscle mass. Muscle biopsy samples from the long head of the dominant triceps brachii were obtained and analyzed for fiber type composition with ATPase histochemistry. Shot put performance was significantly correlated with type II fiber area ( r=0.70, P<0.01), one-arm seated shot put (range r=0.60 to r=0.79, P<0.05), elbow extensors' isokinetic torque (range r=0.65 to r=0.78, P<0.05), bench-press tests ( r>0.86, P<0.01) and estimated arm muscle cross-sectional area ( r=0.68, P<0.05). These results suggest that fiber type composition and the functional capacity of triceps brachii muscle (e.g., isokinetic torque) explain a part of shot put performance. The magnitude of the correlation coefficients between shot put and the upper-body power tests suggests that other body parts (e.g., lower extremities) may play a significant role in this event.
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Affiliation(s)
- G Terzis
- Track and Field Division, Department of Physical Education and Sport Science, University of Athens, Ethnikis Antistassis 41, Daphne, 172 37, Athens, Greece.
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Abstract
A 50-year-old man with no medical history was admitted because of progressive respiratory distress, aseptic meningitis, disseminated intravascular coagulation, cholestatic hepatitis, and renal failure. Mycoplasma pneumoniae infection was confirmed serologically. The patient was treated with erythromycin and showed a favorable recovery. Although M. pneumoniae infection is usually a benign, self-limited acute respiratory disease, on rare occasions it can manifest itself with a fulminant course and multi-organ involvement, even in normal healthy individuals.
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Affiliation(s)
- D Kountouras
- Academic Department of Internal Medicine, Hippocration General Hospital, 114 Vas. Sofias Street, Athens, Greece
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Tentes AAK, Tripsiannis G, Markakidis SK, Karanikiotis CN, Tzegas G, Georgiadis G, Avgidou K. Peritoneal cancer index: a prognostic indicator of survival in advanced ovarian cancer. Eur J Surg Oncol 2003; 29:69-73. [PMID: 12559080 DOI: 10.1053/ejso.2002.1380] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AIM The peritoneal cancer index (PCI) has been used for the detailed evaluation of the peritoneal spread in tumors of gastrointestinal origin and has been found to be a prognostic indicator of survival. The aim of this study was the identification of the significance of the peritoneal cancer index in advanced ovarian cancer. METHODS From 1990 to 2001, 60 women, mean age 65+/-10.84 (41-86), were treated for advanced ovarian cancer. The performance status (Karnofsky performance scale), age, prior surgery score (PSS), peritoneal cancer index (PCI), tumor volume, tumor grade, residual tumor, the presence of ascites, treatment with adjuvant chemotherapy, histopathologic subtype and FIGO stage were retrospectively correlated to survival using univariate model of statistical analysis. RESULTS Hospital mortality and morbidity were 11.7 and 16.7% respectively. The recurrence rate was 23.3%. Overall 5-year survival rate was 41% and mean survival 63+/-8 months. The peritoneal cancer index was related to survival (P=0.0253). The other favorable clinical prognostic indicators of survival were low grade and small volume tumors, treatment with adjuvant chemotherapy and complete cytoreductive surgery (P<0.05). CONCLUSIONS The peritoneal spread in advanced ovarian cancer can be assessed in detail using the peritoneal cancer index. It is a significant prognostic factor of survival and is useful in identifying subgroups.
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Affiliation(s)
- A-A K Tentes
- Surgical Department, Didimotichon General Hospital, Didimotichon 68300, Greece
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Abstract
In this report two cases of localised tetanus in two young (<1 year) intact male and outdoor DSH cats, which had been missing, are described. Clinical examination revealed severe muscular spasms on the right (case 1) or both thoracic limbs (case 2). In the latter cat, wrinkling of the forehead and mild trismus were also seen. The routine diagnostic workup (CBC, survey radiographs of the spine, CSF analysis) did not reveal any abnormalities in both cats. EMG testing on the affected muscles in the second animal showed persistent spontaneous motor unit potentials, strongly indicating tetanus. The treatment, that was symptomatic (diazepam, metronidazole) and supportive (physical therapy, assist feeding and intravenous fluid therapy) resulted in the progressive improvement of limb rigidity and the restoration of motor dysfunction in a period of 5- (case 1) and 2- (case 2) month duration.
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Affiliation(s)
- Z S Polizopoulou
- Department of Clinical Studies, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 11 S. Voutyra Street, 546 27, Thessaloniki, Greece
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Duggan JM, Georgiadis G, VanGorp C, Kleshinski J. Group B streptococcal prosthetic joint infections. J South Orthop Assoc 2002; 10:209-14; discussion 214. [PMID: 12132819] [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: 02/25/2023]
Abstract
We report 6 cases of group B streptococcal prosthetic joint infections seen in our institution and review 8 previously reported cases. These 14 patients (6 men and 8 women) had an average age of 69. Seven hip joints and 7 knee joints were affected. Only 4 patients had risk factors for prosthetic joint infection (diabetes mellitus in 2, cancer in 1, and myelodysplasia in 1). The average time from surgery to onset of symptoms was approximately 4 years (range, 5 months to 10 years). Pain in the affected joint was the chief complaint. Six patients had bacteremia. Seven patients had known or suspected foci of infection, which were genitourinary tract (1), skin and soft tissue trauma sites (1), gastrointestinal tract (1), and oropharynx (1). Nine patients required prosthesis removal in addition to antibiotic therapy. Two patients had apparent cure of the infection with retention of the prosthesis. Group B streptococcal prosthetic joint infections appear to be a late complication of prosthetic joint replacement surgery.
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Affiliation(s)
- J M Duggan
- Department of Internal Medicine, Medical College of Ohio, Toledo 43699-0008, USA
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Papadimas J, Goulis DG, Mandala E, Georgiadis G, Zournatzi V, Tarlatzis BC, Bontis JN. beta-thalassemia and gonadal axis: a cross-sectional, clinical study in a Greek population. Hormones (Athens) 2002; 1:179-87. [PMID: 17018446 DOI: 10.14310/horm.2002.1166] [Citation(s) in RCA: 16] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
beta-thalassemia (beta-thal) is characterized by disturbances of the reproductive system. The aim of the present study was: 1) to assess the hypothalamic- pituitary-gonadal axis in patients with beta-thal in relation to their phenotype and 2) to determine prognostic features of current gonadal status. We studied 135 patients (67 males and 68 females) with beta-thal through history, physical examination, spermiograms and GnRH test. These patients were divided into beta-thal major (51 males and 62 females) and beta-thal intermedia phenotypes (16 males and 6 females). Male patients with beta-thal major were subdivided into three groups a) eugonadal (35%, Tanner's stage V, normal testicular volume, normal spermiograms, normal basal and stimulated hormone values), b) patients with hypogonadotrophic hypogonadism (HH) of late onset (24%, Tanner's stage II-V, low-normal testicular volume, abnormal spermiograms, normal basal gonadotrophin values and abnormal response to GnRH test) and c) patients with HH of early onset (41%, Tanner's stage I, small testicular volume, abnormal spermiograms, abnormal basal and stimulated hormone values). Female patients with beta-thal major were subdivided into: a) eugonadal (32%, Tanner's stage V, regular menstruation, normal basal and stimulated hormone values), b) patients with hypogonadotrophic hypogonadism (HH) of late onset (34%, Tanner's stage II-V, secondary amenorrhea, subnormal basal and stimulated gonadotrophin values) and c) patients with HH of early onset (34%, Tanner's stage I, primary amenorrhea, subnormal basal and stimulated hormone values). Patients with beta-thal intermedia were subdivided into eugonadal (75% of males, 33% of females) and hypogonadal (25% of males, 67% of females). Current gonadal status could not be predicted by means of transfusion or chelation parameters. In conclusion, beta-thal patients could be eugonadal or develop early or late onset HH. trade mark-thal intermedia patients have a more favorable profile than beta-thal major individuals. Current gonadal status of beta-thal patients cannot be predicted by means of history, clinical or laboratory parameters.
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Affiliation(s)
- John Papadimas
- Unit of Reproductive Endocrinology, 1st Department of Obstetrics and Gynecology, Hippocration General Hospital, Aristotle University of Thessaloniki, 546 42 Thessaloniki, Greece
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Bostantjopoulou S, Katsarou Z, Georgiadis G, Zafiriou D, Kazis A. Amantadine sulfate infusion effect on N30 somatosensory evoked potentials in Parkinson's disease. Clin Neuropharmacol 2002; 25:115-8. [PMID: 11981240 DOI: 10.1097/00002826-200203000-00011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The purpose of this study was to evaluate the effect of amantadine sulfate infusion on the N30 component of the median nerve short-latency somatosensory evoked potentials (SSEPs) in patients with Parkinson's disease (PD). Twenty patients with advanced PD and severe motor fluctuations received a 6-day course of amantadine sulfate infusion (400 mg/day) plus their usual levodopa medication. Patients were assessed clinically by means of the Unified Parkinson's Disease Rating Scale (UPDRS-III and -IV). SSEPs to median nerve stimulation were recorded from the parietal and frontal regions before and after the 6-day course of amantadine infusion. Mean UPDRS motor score during the ON and OFF phase improved after amantadine infusion, as did motor fluctuations. SSEP changes resulting from amantadine sulfate treatment were observed in the P20-N30 amplitude as follows: Mean P20-N30 amplitudes before and after treatment were 2.15 +/- 1.11 microV and 3.06 +/- 1.19 microV respectively (p = 0.000), whereas mean N30-P40 amplitude increased from 2.7 +/- 1.6 microV to 3.9 +/- 1.3 microV after treatment (p = 0.000). Our results indicate that coincident to its clinical impact, amantadine infusion in patients with PD affects electrophysiologic parameters as well.
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Myrianthefs P, Karabatsos E, Boutzouka E, Evagelopoulou P, Georgiadis G, Fildissis G, Baltopoulos G. Influence of GM-CSF supplementation on PaO2/FiO2 index in septic patients. Crit Care 2001. [PMCID: PMC3333255 DOI: 10.1186/cc1135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Bostantjopoulou S, Katsarou Z, Zafiriou D, Gerasimou G, Alevriadou A, Georgiadis G, Kiosseoglou G, Kazis A. Abnormality of N30 somatosensory evoked potentials in Parkinson's disease: a multidisciplinary approach. Neurophysiol Clin 2000; 30:368-76. [PMID: 11191929 DOI: 10.1016/s0987-7053(00)00235-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
PURPOSE OF THE STUDY Assess the N30 component of median nerve somatosensory evoked potentials (SEPs) in patients with Parkinson's disease (PD) and correlate its parameters with the severity of the disease, general cognitive ability and regional cerebral blood flow (rCBF). PATIENTS AND METHODS Twenty-three non-demented, non-depressed PD patients (at stage II and III of the disease) and 23 age- and education-matched normal controls were enrolled in the study. SEPs were elicited by median nerve stimulation. PD patients' cognitive ability was assessed by means of: 1) Raven's Colored Progressive Matrices (RCPM); 2) the Test of Non-Verbal Intelligence (TONI-2); and 3) the Wisconsin Card Sorting Test (WCST). The patients' rCBF was evaluated by HMPAO SPECT. RESULTS There was no difference between SEP N30 latency in PD patients and controls (P > 0.05). The P20-N30 peak-to-peak amplitude was lower in PD patients bilaterally (P < 0.05), and the amplitude of N30-P40 was lower on the right side only (P < 0.05). A significant increase in the amplitude ratio P14-N20/P20-N30 was observed in PD patients (P < 0.05). The correlation of these findings with the clinical parameters of the disease, and notably motor signs, was not significant. Of the three neuropsychological tests only the RCPM showed a positive relation to right P20-N30 amplitude. Regression analysis between SEP parameters and rCBF showed a correlation of N30 amplitude with blood flow in parietal cortical areas, but not in frontal regions.
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Affiliation(s)
- S Bostantjopoulou
- 3rd Department of Neurology, University of Thessaloniki, Thessaloniki, Greece
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Vassiliou MP, Petri L, Amygdalou A, Patrani M, Psarakis C, Nikolaki D, Georgiadis G, Behrakis PK. Linear and nonlinear analysis of pressure and flow during mechanical ventilation. Intensive Care Med 2000; 26:1057-64. [PMID: 11030161 DOI: 10.1007/s001340051318] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Linear modeling as a method of exploring respiratory mechanics during mechanical ventilation, was compared to nonlinear modeling for flow dependence of resistance in three distinct groups of patients, those with: (a) normal respiratory function (NRF), (b) chronic obstructive pulmonary disease (COPD), or (c) adult respiratory distress syndrome (ARDS). DESIGN AND PATIENTS Airways opening pressure (Pao), flow (V'), and volume (V) signals were recorded in 32 ICU mechanically ventilated patients, under sedation and muscle relaxation (10 NRF, 11 COPD, 11 ARDS). All patients were ventilated with controlled mandatory ventilation mode at three levels of end-expiratory pressure (PEEPe): 0, 5, and 10 hPa. Data were analyzed according to: (a) Pao = PE + Ers V + Rrs V' and (b) Pao = PE + Ers V + k1V' + k2¿V'¿V'; where Ers and Rrs represent the intubated respiratory system (RS) elastance and resistance, k1 and k2 the linear and the nonlinear RS resistive coefficients, and PE the end-expiratory pressure. The model's goodness of fit to the data was evaluated by the root mean square difference of predicted minus measured Pao values. RESULTS NRF data fit both models well at all PEEPe levels. ARDS and particularly COPD data fit the nonlinear model better. Values of k2 were often negative in COPD and ARDS groups, and they increased in parallel with PEEPe. A gradual increase in PEEPe resulted in better fit of ARDS and COPD data to both models. CONCLUSIONS The model of V' dependence of resistance is more suitable for the ARDS and particularly the COPD groups. PEEP tends to diminish the V' dependence of respiratory resistance during the respiratory cycle, particularly in the COPD group, probably through an indirect effect of the increased lung volume.
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Affiliation(s)
- M P Vassiliou
- Lung Function Department, St. Savas Hospital, Athens, Greece
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Vamvakidis CD, Koutinas AF, Kanakoudis G, Georgiadis G, Saridomichelakis M. Masticatory and skeletal muscle myositis in canine leishmaniasis (Leishmania infantum). Vet Rec 2000; 146:698-703. [PMID: 10887983 DOI: 10.1136/vr.146.24.698] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Twenty-four dogs with a parasitologically and serologically established diagnosis of leishmaniasis were studied to investigate the atrophy of the masticatory muscles which commonly occurs in this disease, and to compare the lesions in the masticatory muscles with those in the cranial tibial muscles. The 24 animals were divided into three groups of eight, group A dogs with no muscular atrophy, group B dogs with different degrees of atrophy in the masticatory and skeletal muscles, and group C dogs with similar degrees of atrophy in the masticatory and skeletal muscles. Increased activities of creatine phosphokinase and lactate dehydrogenase were recorded in only some of the dogs in groups B and C, but there were no significant differences between the mean activities in the three groups. Electromyographic changes indicating myopathy and involving both the temporalis and cranial tibial muscles, were observed in two of the dogs in group A, seven of those in group B, and in all the dogs in group C. Muscle histopathology revealed a variable degree of muscle fibre necrosis and atrophy, mononuclear infiltrates and neutrophilic vasculitis in all the dogs except two in group A. Leishmanial amastigotes were found within macrophages and myofibres in 16 of the dogs, some in each group. IgG immune complexes were detected in muscle samples, and circulating antibodies against myofibres were detected in serum samples from all the 24 dogs.
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Affiliation(s)
- C D Vamvakidis
- Clinic of Companion Animal Medicine, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Stavrou, Greece
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Kimiskidis VK, Mirtsou-Fidani V, Papaioannidou PG, Niopas I, Georgiadis G, Constadinidis TC, Kazis AD. A phase I clinical trial of dextromethorphan in intractable partial epilepsy. Methods Find Exp Clin Pharmacol 1999; 21:673-8. [PMID: 10702964 DOI: 10.1358/mf.1999.21.10.795765] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
We conducted an open-label pilot study of dextromethorphan (DM) in intractable partial epilepsy with the following objectives: a preliminary evaluation of the drug's safety and efficacy in the epileptic patient and a definition of a concentration range which can be safely achieved in future studies. Sixteen patients with drug-resistant, localization-related epilepsies entered the trial. After an 8-week baseline period, DM was added to the existing antiepileptic drugs at a dose of 40 and 50 mg every 6 h (160 and 200 mg/day). Each treatment period lasted 8 weeks. Seizure control improved after administration of DM, especially in the group of intermediate and slow metabolizers. Two patients, however, experienced increased seizure frequency and withdrew from the study. Adverse effects during DM administration were mild and transient. DM was well tolerated even in patients with high plasma levels of the drug (up to 15020 ng/dl). Our results indicate that DM is safe and effective in the treatment of comedicated patients with intractable partial epilepsies.
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Affiliation(s)
- V K Kimiskidis
- 3rd Department of Neurology, Aristotle University of Thessaloniki, Greece
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