Votre navigateur ne supporte pas le javascript Wallonia & Brussels against COVID-19 - Anatomo-pathology


Antoine FROIDURE, Professor - Jean-Philippe DEFOUR, Professor - Anabelle DECOTTIGNIES, FNRS Senior Research Associate

UCLouvain, Cliniques universitaires Saint-Luc - FNRS
" "Telomeres are non-coding DNA sequences located at the end of chromosomes. In highly dividing cells, like embryonic stem cells and germ cells, telomeres are maintained by the telomerase complex. In the absence of telomerase activity in normal somatic cells, telomeres shorten after each cell division, ultimately leading to cell senescence or apoptosis. Telomeres are thus considered as ""molecular biological clocks"", closely related to ageing. Short telomeres syndromes (STS) have been identified, that are linked to genetic mutations affecting compounds of the telomerase complex, or proteins with crucial roles in telomere protection, and resulting in various conditions including lung fibrosis and aplastic anaemia (1). Bone marrow failure in STS results from the premature exhaustion of hematopoietic stem cells and, overall, tissues from STS patients suffer from premature senescence that likely drives the organ failures...

Charles Nicaise, Professor

" In vitro studies will investigate the abilities of SARS-Cov-2 to enter various types of human neurons (cell lines and iPS-derived) and possible axoplasmic transport. In the meantime, analysis of post-mortem CNS and PNS samples from COVID patients would strengthen the hypothesis of SARS-Cov-2 neuro-tropism. "
Funding: CUR-FNRS (pending)
Contact: This email address is being protected from spambots. You need JavaScript enabled to view it.

Daniel Desmecht, Professor - Mutien Garigliany, Professor

FARAH - ULiège 
" We are describing the evolution of the respiratory function after infection using whole-body plethysmography in a hamster model of SARS-CoV-2 pneumonia. Although the tropism of the virus for the upper respiratory tract is well documented, little is known about the pathophysiological mechanisms involved in the impairment of the respiratory function and the development of acute respiratory distress syndrome (ARDS) in some patients. There is a critical need for the development of noninvasive evaluation tools of the respiratory function over the disease course in order to develop therapeutic strategies aiming at specifically improving this function. Plethysmography is a noninvasive method allowing the quantitative evaluation of the lung volume and function. The selected plethysmographic parameters will allow a noninvasive monitoring of the lung function and lesions in the hamster model, permitting the screening of therapeutic molecules aiming at alleviating the...

Daniel Desmecht, Professor - Mutien Garigliany, Professor

FARAH - ULiège 
" We recently showed that domestic cats can be spontaneously infected by SARS-CoV-2 and develop transient, yet severe, pneumonia. Similar reports in other countries confirmed the susceptibility of cats, ferrets, lions and tigers to the infection. Dogs can get infected but, apparenlty, subclinically. Beside the importance of these findings for veterinarians and animal health, a series of domestic or wild animal species might constitute a reservoir of SARS-CoV-2 and dramatically complicate the "uncontainment" process. Domestic cats, minks, ferrets, hamsters, dogs, tigers and lions were all shown to be naturally or (for some species) experimentally susceptible to SARS-CoV-2 infection. In addition, cats, minks, ferrets and hamsters were shown to be able to efficiently transmit the virus to in-contact animals. Little is known about the actual host range of the virus. It is critically needed to determine which domestic, peri-domestic (especially rodents) and wild animals can...

François JOURET, Professeur - Pierre Delanaye, Professeur - Jean-Marie Krzesinski, Professeur Ordinaire

ULiège - FNRS
" L'atteinte rénale semble fréquente et précoce dans la COVID-19. Sa physiopathologie est inconnue. Le but de cette étude est de caractériser cette néphropathie nouvelle causée par le SRAS-Cov-2. Nous réalisons une biopsie rénale post mortem chez tout patient décédé dans le cadre d'une infection COVID-19 en salle d'hospitalisation ou aux soins intensifs (SI). L'étude se focalise sur la corrélation anatomo-clinique. L'étude histologique inclut (i) une description conventionnelle des compartiments glomérulaire, tubulaire et interstitiel ; (ii) une détection immuno-histochimique des antigènes viraux du SRAS-Cov-2 et leur distribution préférentielle dans chaque segment du néphron ; (iii) une caractérisation de l'infiltrat inflammatoire éventuel ; et (iv) une microscopie électronique. "
Funding: Fondation Léon Frédéricq ULiège (21.600 euros) FNRS (en attente) Société Francophone de Néphrologie (en attente)
Contact: Pr dr François JOURET Centre Hospitalier de l'Université de...

Isabelle Salmon, Professor

ULB, Department of Pathology, Erasme hospital and DIAPath-CMMI - Royal Academy of Medicine of Belgium
" A first objective of this project is to establish an accurate topography of the SARS-CoV-2 virus in the organs and various cells of patients who died in COVID-19 units, in order to contribute to a better understanding of the pathogenesis of COVID-19. A second objective is to provide a routine diagnostic test for the detection of SARS-CoV-2 in routine samples in pathological anatomy. "
Funding: Fonds Y Boël (Brussels, Belgium), Fonds Erasme pour la Recherche Médicale (Brussels, Belgium), and "Appel à projet Spécial COVID-19 - ULB" (Brussels, Belgium). The CMMI is supported by the European Regional Development Fund and the Walloon Region of Belgium (Wallonia-biomed; grant no. 411132-957270; project "CMMI-ULB").
Contact: Prof. I. Salmon, Department of Pathology, Erasme Hospital, Université Libre de Bruxelles (ULB), Route de Lennik 808, 1070 Brussels, Belgium.

Mutien Garigliany, Professor - Daniel Desmecht, Professor

" There is a critical need for therapeutic solutions against SARS-CoV-2. Before implementing innovative treatments in human medicine, a first screening of the antiviral or immunomodulatory activity should be performed by in vitro and in vivo methods. To this aim, we developed in vitro (cell culture) and in vivo (hamsters and mice) models of SARS-CoV-2 infection. We developed an in vitro (cell culture) and in vivo (hamsters and mice) to screen antiviral or immunomodulatory molecules, in partnership with colleagues from the ULiège hospital and the GIGA research center. We also validate the inactivation protocols to facilitate the diagnostic workflow, in partnership with the Federal task force. "
Funding: Currently no funding. We applied to the "Crédits urgents de recherche" call.
Contact: Mutien Garigliany, DVM, PhD, Dipl. ECVP Professor Department of Pathology Faculty of Veterinary Medicine Centre for Fundamental and Applied Research for Animals & Health (FARAH) Liège...

Mutien Garigliany, Professor - Daniel Desmecht, Professor

FARAH - ULiège 
" As of today, one of the most promising therapeutic solutions against COVID-19 is the use of convalescent plasma. A subset of the antibodies present in this plasma are able to bind the surface proteins of the virus, chiefly the Spike (attachment) protein, and to neutralize the ability of viral particles to infect permissive cells. Upon request of the Red Cross and ULiège CHU hospital, we developed seroneutralization assays to determine the titers in neutralizing antibodies of convalescent plasma. In collaboration with KU Leuven (Rega) and ITM Antwerp, we just completed an interlaboratory ring test. We screen convalescent plasmas on a routine basis for the Croix Rouge and Rode Kruis. Only plasmas with a titer in neutralizing antibodies above the cut-off value will be used therapeutically. The scarcity of the scientific literature on the subject (only a few studies on the therapeutic use of convalescent plasmas are currently available) make it difficult to fix a cut-off...

Ph. DELVENNE, FNRS Research Director / Chef de service Anatomie pathologique - J. GUIOT, Chef de clinique Pneumologie - L. RENAUD, Chef de service Pneumologie - M. MOUTSCHEN, Chef de service Infectiologie- B. MISSET, Chef de service Soins Intensifs

ULiège, CHU - Royal Academy of Medicine of Belgium
" Nous faisons face à une pandémie d'infection COVID-19. Ce virus pathogène est source de complications pulmonaires aggravant fortement le pronostic de nos patients. De nos jours, tant les mécanismes physiopathologiques en cause que les marqueurs de sévérité de l'atteinte restent indéterminés. Il apparaît donc comme urgent de pouvoir identifier des marqueurs diagnostiques, pronostiques et prédictifs pour nos patients. Dans ce contexte, plusieurs voies rapidement explorables nous apparaissent comme critiques. Le but final de cette étude est de contribuer à une prise en charge plus ciblée des patients porteurs d'une infection au SRAS-Cov-2. "
Funding: Fonds Léon Frederic
Publication References: Dix publications représentatives : 1) Prevention of murine radiogenic thymic lymphomas by tumor necrosis factor or by marrow grafting. HUMBLET C, GREIMERS R, DELVENNE P, DEMAN J, BONIVER J, DEFRESNE MP. J Natl Cancer Inst 88 (1996), 824-831. IF...

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Serge Goldman, Scientific Director

" The Center of Microscopy and Molecular Imaging (CMMI) is currently involved in establishing an accurate SARS-CoV-2 virus distribution topography in the organs and various cells of patients who died in COVID-19 units by providing immunohistochemistry and electron microscopy services (study director Pr. Isabelle Salmon). We have also developed and are currently offering preclinical multimodal quantitative imaging - of lung inflammation - of bacterial population (pathogen or no pathogen) - and of viral infection by isotopic imaging. All these models enable the understanding of pulmonary pathological features caused by SARS-viruses such as CoVID-19. From molecular to humanized animal models, the CMMI provides customized imaging solutions to research projects on Coronavirus The CMMI is also a proud partner of the ULB diagnostic platform set-up in Gosselies to face the epidemic of SARS-CoV2. "
Contact: This email address is being protected from spambots. You need JavaScript enabled to view it.
Comment: The CMMI was co-founded by ULB et UMons and is supported...

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Brussels & Wallonia against COVID19