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1.
Rev Med Liege ; 77(5-6): 265-270, 2022 May.
Artigo em Francês | MEDLINE | ID: mdl-35657181

RESUMO

The aim of this article is to describe the role of anatomic pathology in the management of acute and chronic inflammatory diseases. Granulomatous pathologies will be also addressed as well as some dysimmune pathologies and recent data on the prognostic role of the antitumoral inflammatory response.


: Le but de cet article est de décrire le rôle joué par l'anatomie pathologique dans la prise en charge de maladies inflammatoires aiguës et chroniques. Les pathologies granulomateuses seront également abordées de même que certaines pathologies dysimmunitaires et des données récentes sur le rôle pronostique de la réponse inflammatoire antitumorale.

2.
Rev Med Liege ; 76(5-6): 358-361, 2021 May.
Artigo em Francês | MEDLINE | ID: mdl-34080363

RESUMO

The anatomo-pathological diagnosis of tumors is based on many criteria related mainly to image analysis. Currently, in most pathology laboratories, tissues or cells are placed on glass slides and directly analyzed with an optical microscope. Because of technological evolutions, it is currently possible to digitize slides (digital pathology). The digitization of whole slides has allowed the development of computer programs of artificial intelligence (AI) for image analysis. Applied to tumour pathology, this technology allows the detection, diagnosis or evaluation of the prognosis of neoplastic lesions. There are many challenges associated with the use of AI in routine pathology. These are mainly related to the amount of data to be analyzed and to the development of reliable algorithms. Nevertheless, this technology is promising and could become a valuable aid in the field of precision medicine for which the amount of data related to a patient is constantly increasing.


Le diagnostic anatomo-pathologique des tumeurs repose sur de nombreux éléments en relation principalement avec l'analyse d'images. Actuellement, dans la plupart des laboratoires d'anatomie pathologique, les tissus ou les cellules sont placés sur des lames en verre et directement analysés avec un microscope optique. Grâce aux évolutions technologiques, il est actuellement possible de numériser des lames (pathologie digitale). La digitalisation de lames entières a permis le développement de programmes informatiques d'intelligence artificielle (IA) d'analyse d'images. Appliquée à la pathologie tumorale, cette technologie permet, entre autres, la détection, le diagnostic ou l'évaluation du pronostic de lésions tumorales. Il existe de nombreux défis à l'utilisation de l'IA en anatomie pathologique de routine. Ceux-ci sont essentiellement liés à la quantité de données à analyser pour obtenir des résultats et au développement d'algorithmes fiables. Néanmoins, cette technologie est prometteuse et pourrait devenir une aide précieuse dans le cadre de la médecine de précision où la quantité de données liées à un patient s'accroît sans cesse.


Assuntos
Inteligência Artificial , Neoplasias , Algoritmos , Humanos , Processamento de Imagem Assistida por Computador , Microscopia , Neoplasias/diagnóstico
3.
Rev Med Liege ; 76(5-6): 392-397, 2021 May.
Artigo em Francês | MEDLINE | ID: mdl-34080369

RESUMO

The goal of this article is to emphasize the role of anatomopathology for the intratumoral detection of the immune checkpoint PD-L1. This molecule is one of the main targets in the anti-cancer immunotherapy. The binding of PD-L1 to its receptor PD-1 results in the inactivation of the cytotoxic T-cells, thus providing a mechanism of keeping immune reactions under control. This process can be circumvented by tumour cells to evade immune system. By blocking PD-1/PD-L1 binding, it is possible to reactivate T-cells targeting tumour neo-antigens. This article focuses on how PD-L1 works, on its implication in neoplastic processes, on the general principles of its therapeutic blockade, on the biomarkers underlying the treatment efficacy and on the practical implications of these biomarkers, especially in the anatomopathological practice.


Le but de cet article est de démontrer le rôle de l'anatomie pathologique dans la détection intra-tumorale du checkpoint immunitaire PD-L1. Ce dernier est l'une des principales cibles de l'immunothérapie à visée oncologique. La liaison du ligand PD-L1 à son récepteur PD-1 permet d'inhiber l'action des lymphocytes T cytotoxiques et, ainsi, de garder sous contrôle les réactions immunitaires. Ce processus peut être détourné par les cellules tumorales pour échapper à l'immunosurveillance. En bloquant le couple PD-L1/PD-1, il est possible de réactiver les lymphocytes T dirigés contre les néo-antigènes tumoraux. Nous nous concentrons, dans cet article, sur le mode de fonctionnement général de PD-L1, sur son implication dans les processus néoplasiques, sur le principe de son blocage thérapeutique, sur les biomarqueurs de l'efficacité du traitement et sur l'utilisation pratique de ces biomarqueurs, particulièrement dans la pratique anatomo-pathologique.


Assuntos
Antígeno B7-H1 , Patologistas , Carcinogênese , Humanos , Imunoterapia
4.
Rev Med Liege ; 75(S1): 101-108, 2020.
Artigo em Francês | MEDLINE | ID: mdl-33211430

RESUMO

We report the fatal outcome of two patients infected by SARS-CoV-2 and exhibiting severe lung lesions at the thoracic imaging and autopsic examination. We also describe the biosecurity measures to adopt when performing autopsies during the Covid-19 pandemia.


Nous rapportons l'évolution fatale de deux patients infectés par le SARS-CoV-2 et porteurs de lésions pulmonaires sévères à l'imagerie thoracique et à l'examen autopsique. Nous décrivons également les mesures de biosécurité à adopter pour la réalisation des autopsies au cours de la pandémie de la Covid-19.


Assuntos
Betacoronavirus , Infecções por Coronavirus , Pandemias , Pneumonia Viral , COVID-19 , Humanos , Pulmão/diagnóstico por imagem , SARS-CoV-2
5.
Rev Med Liege ; 75(4): 213-217, 2020 Apr.
Artigo em Francês | MEDLINE | ID: mdl-32267108

RESUMO

We report the case of a 47-year-old woman with unexplained inflammatory syndrome and asthenia. Imaging findings show bilateral abnormalities of femurs and tibias, suggesting an Erdheim-Chester disease, which is confirmed by a bone marrow biopsy of the left femur. The BRAF V600E mutation is detected, allowing the administration of targeted therapies such as BRAF and MEK inhibitors that lead to the improvement of symptoms.


Nous rapportons le cas d'une patiente de 47 ans explorée pour un syndrome inflammatoire inexpliqué et une asthénie chronique. Les examens en imagerie démontrent la présence d'importants remaniements osseux au niveau du périoste des deux fémurs et tibias, évoquant une maladie d'Erdheim-Chester. Celle-ci est confirmée par l'analyse d'une biopsie ostéomédullaire réalisée au niveau du fémur gauche. La détection de la mutation V600E du gène BRAF permet à la patiente de bénéficier d'un traitement ciblé anti-BRAF et anti-MEK, améliorant sa symptomatologie.


Assuntos
Doença de Erdheim-Chester , Biópsia , Doença de Erdheim-Chester/diagnóstico , Doença de Erdheim-Chester/genética , Doença de Erdheim-Chester/terapia , Feminino , Humanos , Pessoa de Meia-Idade , Mutação , Proteínas Proto-Oncogênicas B-raf/genética
6.
Rev Med Liege ; 75(S1): 109-114, 2020.
Artigo em Francês | MEDLINE | ID: mdl-33211431

RESUMO

The SARS-CoV-2 virus causes a respiratory distress syndrome, the main symptom of COVID-19 (for "COronaVIrus Disease 2019"). This infectious disease has been causing a major health and socio-economic pandemic since December 2019. The pulmonary alveolus is regarded as the main target of SARS-CoV-2. However, this coronavirus is capable of directly or indirectly affecting other organs, including the kidneys. Here, we summarize the presumed pathophysiology of COVID-19 renal disease. The incidence of acute kidney injury ranges from 0,5 to 22 % of all patients infected with SARS-CoV-2. The need for renal replacement therapy is reported in 5-9 % of patients in intensive care. Histological analysis of renal biopsies mainly shows acute tubular necrosis of varying severity, as well as the congestion of glomerular and peri-tubular capillaries. Endothelitis has been described in few cases. Evidence for a factual inflammation of the glomerulus remains controversial. The medium/long term consequences of COVID-19 nephropathy are unknown and will deserve a tight follow-up.


Le virus SARS-CoV-2 provoque un syndrome de détresse respiratoire aiguë, le symptôme principal de l'infection COVID-19 (pour «COronaVIrus Disease 2019¼). Cette maladie infectieuse provoque une pandémie de gravité sanitaire et socio-économique majeure depuis décembre 2019. La cible principale du SARS-CoV-2 serait l'alvéole pulmonaire. Néanmoins, ce coronavirus est capable d'affecter directement ou indirectement d'autres organes, y compris les reins. Nous résumons ici la physiopathologie présumée de l'atteinte rénale de la COVID-19. L'incidence de l'insuffisance rénale aiguë varie entre 0,5 à 22 % de tous les patients infectés par le SARS-CoV-2. La nécessité d'une épuration extra-rénale est rapportée chez 5-9 % des patients pris en charge aux soins intensifs. L'analyse histologique de biopsies rénales montre, principalement, une nécrose tubulaire aiguë de sévérité variable, ainsi qu'une congestion des capillaires glomérulaires et péri-tubulaires. Une endothélite a parfois été décrite. L'atteinte inflammatoire du glomérule reste débattue. Les conséquences à moyen/long termes de la néphropathie COVID-19 sont inconnues et mériteront un suivi étroit.


Assuntos
Injúria Renal Aguda , Betacoronavirus , Infecções por Coronavirus , Pandemias , Pneumonia Viral , Injúria Renal Aguda/complicações , COVID-19 , Infecções por Coronavirus/complicações , Infecções por Coronavirus/epidemiologia , Humanos , SARS-CoV-2
7.
Rev Med Liege ; 74(7-8): 394-400, 2019 Jul.
Artigo em Francês | MEDLINE | ID: mdl-31373453

RESUMO

We report the case of a 38-year old non-smoking female who initially presented to the hospital with frequent cough and sputum for several weeks. The investigations confirmed the diagnosis of tuberculosis and a triple therapy was introduced with clinical improvement. Two years later, the patient reported recurrence of respiratory symptoms. The new investigations concluded initially to a recurrence of tuberculosis and a quadriple therapy was introduced. The treatment was poorly tolerated and rapidly stopped. It was then decided to perform a biopsy through mediastinoscopy in the hilar ganglia, which confirmed the diagnosis of sarcoidosis. The etiology of sarcoidosis is not yet clearly established, one of the hypothesis would be the direct involvement of an infectious agent that would induce an excessive immune response. The clinical case below supports a possible role of Mycobacterium tuberculosis in the pathogenesis of sarcoidosis.


Nous rapportons le cas d'une patiente âgée de 38 ans, non fumeuse, qui s'est présentée à l'hôpital pour une symptomatologie de toux et d'expectorations depuis plusieurs semaines. Les différentes investigations ont permis d'établir un diagnostic de tuberculose et une trithérapie a été introduite avec une évolution favorable de la patiente. Deux ans plus tard, la patiente rapporte une récidive des plaintes respiratoires. Les nouveaux examens menés concluent, dans un premier temps, à une récidive de tuberculose et une quadrithérapie est instaurée. Le traitement fut mal toléré et stoppé rapidement. Il est alors décidé de réaliser une biopsie par médiastinoscopie au niveau des ganglions hilaires qui permettra de confirmer le diagnostic de sarcoïdose. L'étiologie de la sarcoïdose n'étant pas encore clairement établie, une des hypothèses est l'implication directe d'un agent infectieux qui induirait une réaction immunitaire excessive. Le cas clinique ci-dessous étaye la théorie selon laquelle le Mycobacterium tuberculosis pourrait être un des agents étiologiques de la sarcoïdose.


Assuntos
Mycobacterium tuberculosis , Sarcoidose , Tuberculose , Adulto , Biópsia , Feminino , Granuloma , Humanos , Mycobacterium tuberculosis/patogenicidade , Sarcoidose/complicações , Tuberculose/complicações
8.
Rev Med Liege ; 74(7-8): 431-435, 2019 Jul.
Artigo em Francês | MEDLINE | ID: mdl-31373460

RESUMO

We report the case of a 67 years old patient with a history of gastric adenocarcinoma who died in a context of severe dyspnea and whose autopsy will confirm the diagnosis of a Pulmonary Tumor Thrombotic Microangiopathy (PTTM). PTTM is a fatal pulmonary complication associated to multiple cancers. It starts with an acute or subacute respiratory failure quickly evolving towards fatal thrombo-embolic pulmonary hypertension and right heart failure. Pre-mortem diagnosis is difficult and not frequent because the pathology is rare, the underlying neoplastic disease is not always known, clinical and radiological signs are not specific and progression is fast. When made soon enough, PTTM diagnosis avoids useless and sometimes harmful medication. In some cases, an improvement of patient's symptoms and comfort is observed. Some studies described several months of extended survival.


Nous rapportons le cas d'un patient de 67 ans avec un antécédent d'adénocarcinome gastrique décédé dans un contexte de dyspnée majeure et dont l'autopsie confirmera la présence d'une microangiopathie thrombotique tumorale pulmonaire (Pulmonary Tumor Thrombotic Microangiopathy - PTTM). La PTTM est une complication pulmonaire fatale associée à de multiples cancers. Elle se présente par une insuffisance respiratoire d'installation aiguë ou subaiguë, évoluant rapidement vers une hypertension thrombo-embolique pulmonaire et une insuffisance cardiaque droite fatales. Le diagnostic ante-mortem est difficile et rarement posé car la pathologie est rare. L'affection néoplasique sous-jacente n'est pas toujours connue, les signes cliniques et radiologiques sont peu spécifiques et son évolution est rapide. Réalisé à temps, le diagnostic permet, néanmoins, d'éviter une médication inefficace et parfois délétère. Dans certains cas, on observe une amélioration des symptômes et de l'inconfort du patient et, parfois, une survie prolongée de quelques mois.


Assuntos
Adenocarcinoma , Neoplasias Pulmonares , Neoplasias Gástricas , Microangiopatias Trombóticas , Adenocarcinoma/complicações , Idoso , Humanos , Neoplasias Pulmonares/complicações , Células Neoplásicas Circulantes , Neoplasias Gástricas/complicações , Microangiopatias Trombóticas/complicações
9.
Rev Med Liege ; 74(10): 535-542, 2019 Oct.
Artigo em Francês | MEDLINE | ID: mdl-31609557

RESUMO

In colorectal cancer staging, pathologic lymph node analysis is a crucial information for the clinician and must be performed with a maximal level of accuracy. Therefore, the surgical sample analysis needs harvesting of as many lymph nodes as possible from the mesentery. In this study, we analysed the influence of a series of clinical and pathological factors which could influence lymph node harvesting. A total of 239 patients were included in our study. The factors with a statistically significant influence on lymph node collection (pinferior to0.05) were the age, gender of the patient, size of the primitive neoplasm, size of the surgical specimen, expertise of the surgeon and the pathology department. The presence of a radiochimiotherapy did not have any influence on the lymph node collection. This study highlights the importance of lymph node harvesting in colorectal surgical specimens of colo-rectal cancers.


Dans la stadification de l'adénocarcinome colorectal, le statut ganglionnaire anatomopathologique constitue une information capitale pour le clinicien et doit être défini avec un maximum d'exactitude. L'analyse de la pièce de résection chirurgicale requiert la collecte au sein du méso du plus grand nombre possible de ganglions lymphatiques. Dans cette étude, nous avons analysé une série de facteurs anatomo-cliniques pouvant influencer la collecte ganglionnaire. Un total de 239 patients a été inclus dans notre étude. Les facteurs avec une influence statistiquement significative sur la collecte ganglionnaire (p inf�rieur a 0,05) ont été l'âge et le sexe du patient, la taille de la tumeur primitive, la taille de la pièce d'exérèse, le degré d'activité du chirurgien et le laboratoire d'anatomie pathologique. La présence ou non d'une radiochimiothérapie néo-adjuvante n'a pas eu d'impact sur le nombre de ganglions prélevés. Cette étude souligne l'importance de la collecte ganglionnaire au sein des pièces de résection chirurgicale d'un cancer colo-rectal.


Assuntos
Neoplasias Colorretais , Excisão de Linfonodo , Metástase Linfática , Neoplasias Colorretais/patologia , Humanos , Excisão de Linfonodo/métodos , Metástase Linfática/diagnóstico , Estadiamento de Neoplasias
10.
Rev Med Liege ; 72(6): 308-311, 2017 Jun.
Artigo em Francês | MEDLINE | ID: mdl-28628288

RESUMO

The oligometastatic melanoma is a peculiar stage of cancer progression which is initially restricted to the initial body area. In most instances, only a small number of metastases are simultaneously present. The oligometastatic stage is synchronous when metastases are disclosed at the time of initial diagnosis of the primary cancer. Metastases are metachronous when they are detected after the initial treatment of the primary neoplasm. A variant of the disease is called the smouldering disease when cutaneous metastases grow or regress in unison. The smouldering disease is granted to a condition when some metastases keep grooving when other metastases regress.


Le mélanome oligométastatique est un mode particulier de progression cancéreuse qui se cantonne initialement au territoire de drainage lymphatique du site du cancer primitif. Dans la majorité des cas, un très petit nombre de métastases seraient présentes simultanément. Le stade oligométastatique est synchrone lorsque les métastases sont découvertes au moment du diagnostic initial du cancer primitif. Les métastases sont dites métachrones lorsqu'elles surviennent après traitement initial. Une variante de ce processus, décrite sous le nom de maladie couveuse ou «smouldering disease¼, concerne des lésions métastatiques cutanées qui grandissent et régressent de concert sur ce même territoire.


Assuntos
Melanoma/patologia , Neoplasias Cutâneas/patologia , Humanos , Melanoma Maligno Cutâneo
11.
Rev Med Liege ; 72(3): 146-150, 2017 Mar.
Artigo em Francês | MEDLINE | ID: mdl-28387492

RESUMO

Organ transplants are bound to the induction and upkeep of immunosuppression. The immunomodulatory regimen modalities have changed over time with an improvement of the overage graft survival. The effects are also present on the skin and its cancerogenesis which is particularly activated for the squamous cell carcinoma. A review of the recent medical literature reveals the importance of searching squamous cell carcinomas, actinic keratoses, seborrheic keratoses and keratocanthomas before and after organ transplants. The severity of the carcinomas is due to their multiplicity and to the progressive occurrence of more aggressive lesions. Prevention relies on a strict adherence to sun protection after transplantation and on refined immunosuppressive strategies.


Toute greffe d'organe s'accompagne de l'induction et de l'entretien d'un état d'immunosuppression. Les modalités des traitements immunosuppresseurs ont évolué au cours du temps avec une amélioration de la survie des greffons. Les effets se marquent aussi au niveau de la peau et de sa cancérogenèse qui est particulièrement active pour le carcinome spinocellulaire. Un survol de la littérature médicale récente semble indiquer l'importance de répertorier les carcinomes spinocellulaires, les kératoses actiniques, les kératoses séborrhéiques et les kératoacanthomes avant et dans le suivi d'une greffe. La gravité des carcinomes tient à leur multiplicité et à la survenue progressive de lésions biologiquement plus agressives. La prévention des lésions repose sur une protection solaire stricte dès la transplantation et sur l'adoption de stratégies immunosuppressives adaptées.


Assuntos
Transplante de Rim , Neoplasias Cutâneas/etiologia , Transplantados , Humanos , Imunossupressores/efeitos adversos
12.
Rev Med Liege ; 71(6): 298-301, 2016 06.
Artigo em Francês | MEDLINE | ID: mdl-28383863

RESUMO

Toxic epidermal necrolysis (TEN, Lyell syndrome) is a severe paroxystic drug reaction whose inductive mechanisms remain poorly understood. The HLA glycoproteins are possibly involved in the disease process. Such investigations rely on biomolecular methods, and suggest specific interactions between some drugs or their metabolites and some HLA groups according to ethnicity of the TEN patients. Electron microscopy following the immunogold method for revealing HLA-DR did not disclose any evidence for distinguishing distinct patterns on Langerhans cell membrane between the initial and the resolution phases of TEN.


La nécrolyse épidermique toxique (NET, syndrome de Lyell) est une toxidermie paroxystique grave dont les mécanismes inducteurs restent mal élucidés. Les glycoprotéines HLA ont été potentiellement impliquées dans ce processus. Leur étude a bénéficié des méthodes biomoléculaires qui suggèrent des interactions spécifiques entre certains médicaments ou leurs métabolites et certains HLA en fonction du groupe ethnique du patient atteint de NET. La microscopie électronique, par la méthode «immunogold¼ afin d'évaluer les HLA-DR, n'a pas révélé de différences notoires dans leur distribution sur la paroi de cellules de Langerhans entre la phase initiale et celle de résolution de 5 cas de NET.


Assuntos
Síndrome de Stevens-Johnson/diagnóstico , Humanos , Imuno-Histoquímica
13.
Neuropathol Appl Neurobiol ; 41(2): e29-40, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25041908

RESUMO

AIMS: Human cytomegalovirus (HCMV) is a ubiquitous beta human herpesvirus able to influence infected cell survival and proliferation and to modulate the host immune response. As there is accumulating evidence that HCMV is detected in primary intracranial astrocytic tumours, in this study we looked for the presence of HCMV in intracranial tumours and tried to correlate this eventual presence with the anti-HCMV systemic immunoreactivity and with the detection of HCMV in peripheral blood. METHODS: In this study, we analysed 43 glioblastomas (GBM), 14 oligodendrogliomas (OL) and 20 meningiomas (MG) by immunofluorescence (IF) targeting HCMV immediate early antigen (IE1) and by nested PCR (nPCR) amplifying HCMV glycoprotein B (gB). RESULTS: Detection of IE1 by IF showed the presence of HCMV in 70% of GBM, 57% of OL and 85% of MG, in contrast to gB nPCR, which detected HCMV in only 50% of GBM, 38% of OL and 46% of MG. Unexpectedly, HCMV DNA and antigens were detected within GBM, OL and MG of patients that exhibit negative viral serology. More surprisingly, PCR on the peripheral blood did not detect HCMV in patients with a HCMV-positive tumour. CONCLUSIONS: Our results are in agreement with previous observations demonstrating HCMV in glial tumours and highlight the presence of HCMV in meningiomas. We also showed that anti-HCMV specific systemic immunoreactivity and detection of HCMV in peripheral blood are not predictive of HCMV presence in primary intracranial tumours.


Assuntos
Neoplasias Encefálicas/virologia , Infecções por Citomegalovirus/complicações , Infecções por Citomegalovirus/epidemiologia , Infecções por Citomegalovirus/imunologia , DNA Viral/análise , Feminino , Imunofluorescência , Humanos , Proteínas Imediatamente Precoces/análise , Medições Luminescentes , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase , Estudos Soroepidemiológicos
14.
Rev Med Liege ; 70(11): 550-6, 2015 Nov.
Artigo em Francês | MEDLINE | ID: mdl-26738266

RESUMO

Gestational trophoblastic diseases include placental pathologies comprising fertilization abnormalities (hydatidiform moles) and malignant lesions (choriocarcinoma, placental site trophoblastic tumor and epithelioid trophoblastic tumor). Due to their low incidence and heterogeneity, their diagnosis, management and treatment are not always optimal. Following the example of other European countries, a national registration system with two reference centers has been set up to guide physicians and patients and to propose individualized management. The centers offer their expertise through a systematic centralised pathology review by a panel of experts. HCG values are plotted in regression curves. In case of gestational trophoblastic neoplasia, an imaging work-up is proposed, from which the FIGO score and stage are derived and will guide the choice of treatment. Belgian centers offer a multidisciplinary approach, in partnership with the referent physician. More information for practitioners and patients is available on a web site: www.mole-chorio-bgog.eu, which also harbours a forum of discussion.


Assuntos
Doença Trofoblástica Gestacional/epidemiologia , Doença Trofoblástica Gestacional/terapia , Sistema de Registros , Bélgica/epidemiologia , Feminino , Doença Trofoblástica Gestacional/classificação , Humanos , Equipe de Assistência ao Paciente , Gravidez
15.
Mol Carcinog ; 53(8): 667-73, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23359495

RESUMO

Head and neck squamous cell carcinoma (HNSCC) represent the sixth most common malignancy diagnosed worldwide. Patient's survival is low due the high frequency of tumor recurrence. Inflammation promotes carcinogenesis as well as the formation of metastasis. Indeed, proinflammatory mediators are known to stimulate the expression of specific transcription factors such as Snai1 and to increase the ability of tumor cells to migrate into distant organs. The atypical interleukin-32 (IL32) was mainly described to exacerbate inflammatory responses in rheumatoid arthritis and inflammatory bowel diseases. IL32 is expressed in various cancers but its role in HNSCC physiology is still unexplored. Here, we analyzed the expression of IL32 and its implication on HNSCC aggressiveness. We showed that patients with tumor expressing high amounts of IL32 exhibit decreased disease-free periods (20.5 mo vs. 41 mo, P = 0.0041) and overall survival (P = 0.0359) in comparison with individuals with weak IL32 tumor expression. This overexpression was negatively correlated with gender (P = 0.0292) and p53 expression (P = 0.0307). In addition, in vitro data linked IL32 expression to metastasis formation since IL32 inhibition decreased Snai1 expression and tumor cell migration in a Boyden chamber assay. Our data provide new insight into the role of IL32 in HNSCC aggressiveness.


Assuntos
Carcinoma de Células Escamosas/metabolismo , Movimento Celular , Neoplasias de Cabeça e Pescoço/metabolismo , Interleucinas/metabolismo , Carcinoma de Células Escamosas/mortalidade , Carcinoma de Células Escamosas/patologia , Feminino , Seguimentos , Neoplasias de Cabeça e Pescoço/mortalidade , Neoplasias de Cabeça e Pescoço/patologia , Humanos , Interleucinas/antagonistas & inibidores , Interleucinas/genética , Masculino , Pessoa de Meia-Idade , Gradação de Tumores , Invasividade Neoplásica , Estadiamento de Neoplasias , Prognóstico , RNA Interferente Pequeno/genética , Taxa de Sobrevida
16.
Rev Med Liege ; 69(2): 68-71, 2014 Feb.
Artigo em Francês | MEDLINE | ID: mdl-24683826

RESUMO

The frontier between the human body and the environment is largely represented by the stratum corneum. It is obvious that the skin aspect on some body sites appears dry and rough in some predisposed individuals during winter season. The reductions in the outdoor temperature, ambient moisture and dew point are the main physical factors involved in this process. We present the aspects seen under ultraviolet light and scanning electron microscopy.


Assuntos
Exposição Ambiental , Epiderme/ultraestrutura , Humanos , Microscopia Eletrônica de Varredura , Raios Ultravioleta
17.
Rev Med Liege ; 69(10): 549-54, 2014 Oct.
Artigo em Francês | MEDLINE | ID: mdl-25796749

RESUMO

Amiodarone is an antiarrhythmic agent among the I most powerful and the most frequently used for the control of recurrent ventricular tachycardia and the secondary prevention of recurrent atrial fibrillation. Its use is not without risk. Although highly effective, it may induce various, sometimes severe, side effects, particularly at the thyroid level.In patients receiving amiodarone, one can encounter biological changes without clinical repercussion. Some may present a true thyroid disease, either hyper- or hypothyroidism. In this literature review, we will see how to prevent, diagnose, and treat these complications,if required.


Assuntos
Amiodarona/efeitos adversos , Hipertireoidismo/induzido quimicamente , Hipotireoidismo/induzido quimicamente , Amiodarona/uso terapêutico , Antiarrítmicos/efeitos adversos , Antiarrítmicos/uso terapêutico , Fibrilação Atrial/prevenção & controle , Humanos , Hipertireoidismo/diagnóstico , Hipertireoidismo/terapia , Hipotireoidismo/diagnóstico , Hipotireoidismo/terapia , Taquicardia Ventricular/tratamento farmacológico
18.
Rev Med Liege ; 69(10): 555-8, 2014 Oct.
Artigo em Francês | MEDLINE | ID: mdl-25796750

RESUMO

The recognition of a complex disorder associating skin psoriasis and its comorbidities has considerably progressed over recent years. Beyond the skin lesions, psoriatic arthritis, the metabolic syndrome, type II diabetes, cardiovascular disease, inflammatory bowel diseases, and some cancers represent a group of chronic systemic disorders. The process is initiated and sustained by an immunological pathway involving Th1, Th17 and Th22 lymphocytes. The recognition of this complex disorder indicates that the clinical impact of psoriasis is not exclusively limited to the skin only.


Assuntos
Artrite Psoriásica/imunologia , Psoríase/complicações , Linfócitos T Auxiliares-Indutores/imunologia , Artrite Psoriásica/fisiopatologia , Humanos , Psoríase/imunologia , Psoríase/fisiopatologia , Síndrome , Células Th1/imunologia , Células Th17/imunologia
19.
Rev Med Liege ; 69(5-6): 276-81, 2014.
Artigo em Francês | MEDLINE | ID: mdl-25065232

RESUMO

In Belgium and in other countries, the Cancer Registry data show an increased incidence of cancers related to age, the majority of tumors being diagnosed beyond 60 years. However, the mechanisms responsible for this increase are not clear. Cancer could be chronologically associated with aging because of the long latency period between the exposition to carcinogenic agents and the appearance of clinical signs. Aging could also predispose directly to cancer by different mechanisms (impaired immune response, increased oxidative stress, shortening of telomeres, accumulation of senescent cells). In this review, we propose to describe different hypotheses which could explain the increased incidence of cancers in the elderly.


Assuntos
Envelhecimento/fisiologia , Neoplasias/epidemiologia , Neoplasias/etiologia , Idade de Início , Idoso , Idoso de 80 Anos ou mais , Senescência Celular/genética , Senescência Celular/imunologia , Humanos , Estresse Oxidativo/fisiologia , Homeostase do Telômero
20.
Rev Med Liege ; 69(4): 210-3, 2014 Apr.
Artigo em Francês | MEDLINE | ID: mdl-24923101

RESUMO

Skin ageing occasionally manifests itself at long-term by severe atrophoderma. Systemic or topical corticotherapy exerts an atrophic impact mimicking the effects of old age. Such atrophoderma condition has been described as transparent skin about 40 years ago, and it received more recently the new denomination of dermatoporosis. Such condition stands out in the medical history to induce clinical consequences. They are sometimes prominent introducing diverse lesions such as Bateman purpura, stellate scars and wounds following minor trauma.


Assuntos
Envelhecimento da Pele/patologia , Dermatopatias/patologia , Pele/patologia , Atrofia/patologia , Humanos
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