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See detailPersévérances - Programme de recherche de formation et d'action pour lutter contre le harcèlement moral au travail - Projets diffusion et évaluation
Italiano, Patrick ULg; Vella, Sonia; Vivegnis, Aurelie

Report (2007)

Rapport concernant la diffusion et l'évaluation par des professionnel du secteur des outils de diagnostic et d'intervention sur le harcèlement moral au travail

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See detailPersistance des troubles psychologiques et comportementaux de la démence
Squelard, Gilles ULg; Adam, Stéphane ULg; Missotten, Pierre ULg et al

Poster (2010, October)

est considérable. Actuellement, la sélection d’un traitement dépend de la nature du trouble et de son intensité. La connaissance de leur persistance s’avère importante pour la sélection et l’organisation ... [more ▼]

est considérable. Actuellement, la sélection d’un traitement dépend de la nature du trouble et de son intensité. La connaissance de leur persistance s’avère importante pour la sélection et l’organisation du traitement. Objectifs: Evaluer la persistance des troubles psychologiques et comportementaux dans une population de sujets déments suivis longitudinalement. Méthodes: Nous avons sélectionné 104 sujets déments issus de l’étude Qualidem (Paquay et al., 2004). Tous les sujets sont institutionnalisés et présentent des perturbations cognitives (score MMSE<20). Les troubles psychologiques et comportementaux ont été évalués à 12 mois d’intervalle avec le Neuropsychiatric Inventory (Cummings et al., 1997). Résultats: Les perturbations les plus persistantes sont les idées délirantes (62%), et l’agitation (67%). Le risque de rechute est moins important pour la dépression (54%), les hallucinations (44%), l’exaltation de l’humeur (43%), l’apathie (48%), l’irritabilité (52%), et le comportement moteur aberrant (52%). L’anxiété (38%), la désinhibition (39%), les troubles du sommeil (39%) et de l’appétit (38%) sont les moins persistants. Conclusion: La nature persistante de l’agitation et des idées délirantes suggère que le traitement de ces perturbations doit être prolongé. La nature ponctuelle de l’anxiété, la désinhibition et des troubles de l’appétit et du sommeil suggère qu’un traitement à court terme est plus approprié pour ces perturbations. Ces résultats sont à interpréter par rapport à la définition des troubles induite par le NPI. [less ▲]

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See detailPersistence and dispersion of an introduced population of Alpine Newt (Triturus alpestris) in the limestone plateau of Larzac (Southern France)
Denoël, Mathieu ULg

in Revue d'Ecologie (La Terre et la Vie) (2005), 60(2), 139-148

Persistence and dispersion of an introduced population of Alpine Newt (Triturus alpestris) in the limestone plateau of Larzoc (southern France). - The study of introduced populations is interesting to ... [more ▼]

Persistence and dispersion of an introduced population of Alpine Newt (Triturus alpestris) in the limestone plateau of Larzoc (southern France). - The study of introduced populations is interesting to better understand the geographic distribution and adaptability of species in different environments. The recent finding of an Alpine Newt population (Triturus alpestris) in the limestone plateau of Larzac (Department of Herault, France) provides the opportunity to examine the success of this species in the French supra-Mediterranean environment, Indeed, this species is absent from southern France although present in a large part of France and in northern Spain. The introduction site and all water bodies within a 2.5 km radius were surveyed between spring and autumn 2003. Because of the introduction date and the life expectancy of newts, all observed individuals are descendants of the introduced animals. They persist and breed in the study site despite the coexistence with Palmate Newts (Tri-turus helveticus). Body condition decreases in summer in these two species, but was lower in Alpine Newt males than in Palmate Newt males in autumn. Alpine Newts were found in only one of the other nine ponds, indicating a 1.5 km dispersion. Few Alpine Newts were present at this site, but reproduction was effective. These results show that the Alpine Newt can survive in southern France despite the presence of other newt species, but that the dispersion speed and rate towards other ponds are low. [less ▲]

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See detailPersistence of an intact endometrial matrix and vessels structure in women exposed to VA-2914, a selective progesterone receptor modulator.
Ravet, Stéphanie ULg; Munaut, Carine ULg; Blacher, Silvia ULg et al

in Journal of Clinical Endocrinology and Metabolism (2008), 93(11), 4525-31

Background: VA-2914 is a selective progesterone receptor modulator with potential contraceptive activity that induces amenorrhea, whereas progestins cause endometrial spotting and bleeding. This abnormal ... [more ▼]

Background: VA-2914 is a selective progesterone receptor modulator with potential contraceptive activity that induces amenorrhea, whereas progestins cause endometrial spotting and bleeding. This abnormal bleeding due to progestins is a consequence of focal stromal proteolysis by an increase in naked vessel size and density. Objective: Our objective was to quantify the effects of VA-2914 on endometrial vascularization, fibrillar matrix, and vascular endothelial growth factor (VEGF)-A expression in endometrial biopsies from 41 women before and after 12 wk daily treatment with a placebo, or 2.5, 5, or 10 mg VA-2914. Methods: Collagen fibrillar network was stained by silver impregnation. Vessel area, density, and structure were quantified with a computer-assisted image analysis system after double immunostaining using an anti-von Willebrand factor (endothelial cells) and an anti- smooth muscle actin (vascular smooth muscle cells) marker antibody. VEGF-A mRNAs were quantified by RT-PCR and localized by immunohistochemistry. Results: The endometrial vessels, collagen network, and mRNA levels of VEGF-A were identical during the luteal phase at baseline and in VA-2914 treated women. VEGF-A distribution was unchanged. Conclusions: VA-2914 does not alter the endometrial matrix and cells, and does not modify the endometrial vessel morphology as compared with baseline biopsies. [less ▲]

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See detailPersistence of decomposition odour in soil analysed by GC×GC-TOFMS
Perreault, K; Stefanuto, Pierre-Hugues ULg; Stuart, B et al

Conference (2014, May 22)

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See detailPersistence of Scattering Centers
Verly, Jacques ULg; Dudgeon, Dan E.

Scientific conference (1993)

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See detailPersistency of lactation yields: A review
Gengler, Nicolas ULg

in Interbull Bulletin (1996), 12

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See detailPersistent atrial standstill in familial Ebstein's anomaly.
Pierard, Luc ULg; Henrard, L.; Demoulin, J. C.

in British heart journal (1985), 53(6), 594-7

Persistent atrial standstill occurred in a father and his youngest son with familial Ebstein's anomaly. In both cases routine electrocardiograms showed no atrial electrical activity and cross sectional ... [more ▼]

Persistent atrial standstill occurred in a father and his youngest son with familial Ebstein's anomaly. In both cases routine electrocardiograms showed no atrial electrical activity and cross sectional echocardiograms showed inferior displacement of the septal tricuspid leaflet and tethering of the tricuspid leaflets to the right ventricle. The father had a cerebral embolism and died of a myocardial infarction. Necropsy showed attachment of the septal tricuspid leaflet below the membranous septum. On serial histological examination fibrofatty infiltration of the right atrial wall, the atrioventricular node, and the inferior part of the His bundle up to the bifurcation was present. The son had haemodynamic and electrophysiological findings consistent with mild Ebstein's anomaly and persistent atrial standstill, for which permanent cardiac pacing was necessary. The persistent atrial standstill with slow escape rhythm was most probably a consequence of the abnormalities in both the atrial wall and the His bundle which, together with the abnormal attachment of the tricuspid valve, may be features of the same congenital cardiac anomaly. [less ▲]

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See detailPersistent hyperplastic primary vitreous: MRI.
Kuker, W.; RAMAEKERS, Vincent ULg

in Neuroradiology (1999), 41(7), 520-2

Persistent hyperplastic primary vitreous (PHPV), a developmental cause of leukocoria, is due to incomplete regression of the fetal blood supply to the eye. We report the MRI features of PHPV of the dorsal ... [more ▼]

Persistent hyperplastic primary vitreous (PHPV), a developmental cause of leukocoria, is due to incomplete regression of the fetal blood supply to the eye. We report the MRI features of PHPV of the dorsal type to facilitate differential diagnosis from other causes of leukocoria, namely retinoblastoma, which may have major therapeutic consequences. [less ▲]

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See detailPersistent hypocoagulability in patients with septic shock predicts greater hospital mortality: impact of impaired thrombin generation.
MASSION, Paul ULg; PETERS, Pierre ULg; LEDOUX, Didier ULg et al

in Intensive Care Medicine (2012), 38(8), 1326-35

PURPOSE: Sepsis induces hypercoagulability, hypofibrinolysis, microthrombosis, and endothelial dysfunction leading to multiple organ failure. However, not all studies reported benefit from anticoagulation ... [more ▼]

PURPOSE: Sepsis induces hypercoagulability, hypofibrinolysis, microthrombosis, and endothelial dysfunction leading to multiple organ failure. However, not all studies reported benefit from anticoagulation for patients with severe sepsis, and time courses of coagulation abnormalities in septic shock are poorly documented. Therefore, the aim of this prospective observational cohort study was to describe the coagulation profile of patients with septic shock and to determine whether alterations of the profile are associated with hospital mortality. METHODS: Thirty-nine patients with septic shock on ICU admission were prospectively included in the study. From admission to day 7, analytical coagulation tests, thrombin generation (TG) assays, and thromboelastometric analyses were performed and tested for association with survival. RESULTS: Patients with septic shock presented on admission prolongation of prothrombin time, activated partial thromboplastin time (aPTT), increased consumption of most procoagulant factors as well as both delay and deficit in TG, all compatible with a hypocoagulable state compared with reference values (P < 0.001). Time courses revealed a persistent hypocoagulability profile in non-survivors as compared with survivors. From multiple logistic regression, prolonged aPTT (P = 0.007) and persistence of TG deficit (P = 0.024) on day 3 were strong predictors of mortality, independently from disease severity scores, disseminated intravascular coagulation score, and standard coagulation tests on admission. CONCLUSIONS: Patients with septic shock present with hypocoagulability at the time of ICU admission. Persistence of hypocoagulability assessed by prolonged aPTT and unresolving deficit in TG on day 3 after onset of septic shock is associated with greater hospital mortality. [less ▲]

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See detailPersistent infection of human thymic epithelial cells by coxsackievirus B4
Brilot, F.; Chehadeh, W.; Charlet-Renard, C. et al

in Journal of Virology (2002), 76(10), 5260-5265

Persistent replication of coxsackievirus B4 (CVB4) E2 (diabetogenic) and CVB4 JBV (nondiabetogenic) strains in thymic epithelial cell (TEC)-enriched cultures (>or=95%) was proved by detection of positive ... [more ▼]

Persistent replication of coxsackievirus B4 (CVB4) E2 (diabetogenic) and CVB4 JBV (nondiabetogenic) strains in thymic epithelial cell (TEC)-enriched cultures (>or=95%) was proved by detection of positive- and negative-strand viral RNA by reverse transcription-PCR in extracted RNA from cell cultures, VP1 capsid protein detection by immunofluorescence (IF) staining, and release of infectious particles up to 30 days after infection without obvious cytolysis. By double-IF staining, cytokeratin-containing cells were shown to be susceptible to CVB4. The persistence of CVB4 was associated with a significantly increased rate of TEC proliferation (up to 70%) after 20 days of culture and a significantly increased chronic production of immunoreactive interleukin-6 (IL-6), leukemia inhibitory factor, and granulocyte-macrophage colony-stimulating factor in supernatant after 3 days of culture. The CVB4 replication and the release of cytokines were not restricted to the CVB4 E2 diabetogenic strain and did not depend on the genetic background of the host; however, TEC were more responsive to CVB4 E2 than CVB4 JBV as far as the production of cytokines. [less ▲]

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See detailPersistent infection of thymic epithelial cells with coxsackievirus B4 results in a decreased expression of insulin-like growth factor 2
Jaïdane, Hela; Caloone, Delphine; Lobert, Pierre-Emmanuel et al

in Journal of Virology (2012), 86

It has been hypothesized that a disturbance of central self-tolerance to islet β-cell may play a role in the enteroviral pathogenesis of type 1 diabetes. Whether enteroviruses can induce an impaired ... [more ▼]

It has been hypothesized that a disturbance of central self-tolerance to islet β-cell may play a role in the enteroviral pathogenesis of type 1 diabetes. Whether enteroviruses can induce an impaired expression of β-cell self-antigens in thymic epithelial cells has been investigated in a murine thymic epithelial (MTE) cell line. This cell line was permissive to the diabetogenic strain CV-B4 E2 and spontaneously expressed type 2 insulin-like growth factor (Igf2), the dominant self-antigen of the insulin family. In this model, a persistent replication of CV-B4 E2 was obtained as attested by the prolonged detection of intracellular positive and negative-strand viral RNA by RT-PCR, and capsid protein VP1 by IF and by the release of infectious particles in culture supernatant fluids. The chronic stage of the infection was characterized by a low proportion of VP1-positive cells (1-2%) whereas many cells harbored enteroviral RNA as displayed by RT-PCR without extraction applied directly on a few cells. Igf2 mRNA and IGF-2 protein were dramatically decreased in CV-B4 E2-infected MTE cultures compared with mock-infected cultures, whereas housekeeping and Il6 genes expression were maintained and Igf1 mRNA was decreased but at a lower extent. Inoculation of CV-B3-, CV-B4 JVB- or Echovirus 1 resulted in a low level of IGF-2 in culture supernatant fluids as well, whereas HSV-1 stimulated the production of the protein. Thus, a persistent infection of a thymic epithelial cell line with enteroviruses, like CV-B4 E2 can result in a disturbed production of IGF-2, a protein involved in central self-tolerance towards islet β-cells. [less ▲]

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See detailPersistent Ischemic Mitral Regurgitation After Annuloplasty can be Predicted by Pre-operative Echocardiography.
Magne, Julien ULg; Pibarot, P; Dagenais, F et al

Conference (2006)

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See detailPersistent Ischemic Mitral Regurgitation After Annuloplasty can be Predicted by Pre-operative Echocardiography.
Sénéchal, M; Magne, Julien ULg; Pibarot, P et al

Conference (2006)

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See detailPersistent low levels of serum hCG: please do not miss phantom hCG! (pseudohypergonadotropinemia syndrome)
VALDES SOCIN, Hernan Gonzalo ULg; SYRIOS, Petros ULg; GADISSEUR, Romy ULg et al

in Acta Clinica Belgica (2013), 68(6), 465

Introduction: Beyond pregnancy, persistent low levels of hCG may be associated with various benign and malignant conditions, i.e. quiescent gestational trophoblastic disease (QTD), raised pituitary hCG or ... [more ▼]

Introduction: Beyond pregnancy, persistent low levels of hCG may be associated with various benign and malignant conditions, i.e. quiescent gestational trophoblastic disease (QTD), raised pituitary hCG or false positive elevation caused by circulating heterophilic antibodies. This situation requires a clinico-biological approach in order to avoid misunderstandings that could lead to inappropriate diagnostic or therapeutic attitudes. Observation: A 23 years old woman (GOPO status) consulted his gynaecologist because of persistent abdominal pain. She was diagnosed of having trophoblastic disease on the basis of persistently positive human chorionic gonadotropin (hCG) test (Roche Modular) results, in the absence of pregnancy. Persistent low levels of hCG (around 10 U/L) were detected in her plasma. The patient underwent a trial with methotrexate chemotherapy. Abdominal pain was unrelieved whereas plasma hCG was 8.9 U/L. A serology test for Chlamydia indicated persistent infection and a course of antibiotic treatment was underwent without any relief. A laparoscopic exploration ruled out any trophoblastic residue or pelvic adherences. The patient was referred to the Endocrine Unit for further pituitary and hormonal investigations. Plasma and urine samples were sent to Biology Service to exclude a false hCG positive value. While low levels of hCG were detected in serum by assay, no significant hCG was detected in the urine (0,1 U/L). When serum was treated with HBT tube for the detection of heterophilic antibodies, hCG levels were 0.98 U/L. After mouse serum treatment, hCG was not further detected in our patient, indicating the presence of phantom hCG due to the presence of human anti mouse heterophilic antibodies. Conclusions: Textbooks on obstetrics and gynecology emphasize the importance of plasma hCG testing in patients with trophoblastic diseases. The ability of laboratory measurements to guide the clinician appropriately in every circumstance is limited. Caution should be exercised when clinical findings and laboratory results are discordant. Current protocols for the diagnosis and treatment of trophoblastic disease should include a compulsory test for hCG in urine and a test for heterophilic antibodies when appropriate. In this case report, we demonstrated that phantom hCG, was caused by heterogenous human anti mouse antibodies. [less ▲]

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See detailPersistent negative T waves in the infarct-related leads as an independent predictor of poor long-term prognosis after acute myocardial infarction
Lancellotti, Patrizio ULg; Gerard, P. L.; Kulbertus, Henri ULg et al

in American Journal of Cardiology (2002), 90(8), 833-837

This study sought to determine the long-term prognostic significance of persistent or transient, negative T waves in infarct-related leads. After acute myocardial infarction (AMI), QRS and T wave ... [more ▼]

This study sought to determine the long-term prognostic significance of persistent or transient, negative T waves in infarct-related leads. After acute myocardial infarction (AMI), QRS and T wave alterations may resolve. No clinical study has investigated the prognostic importance of persistent versus transient negative T waves. We studied 147 consecutive patients with first AMI and greater than or equal to2 negative T waves in the infarct-related leads on the electrocardiogram. One hundred twenty patients developed Q waves. Patients were followed clinically for 60 +/- 21 months. T-wave normalization was observed early (before hospital discharge) in 34 patients and late (at 4 +/- 1 months) in 65. Thirty patients had Q-wave regression. Adverse outcome occurred in 57 patients. There were 23 hard events (cardiac death in 12 patients and nonfatal AMI in 11). Patients with early or late T-wave normalization had similar event-free survival curves that diverged rapidly from that of patients with persistent negative T waves, who had a worse outcome (p <0.0001). Patients with or without Q-wave regression had similar survival curves. Using multivariate Cox regression analysis, higher end-systolic volume (hazard ratio [HR] 1.01, p = 0.007), the presence of multivessel disease (HR 3.33, p = 0.009), and persistent negative T waves (HR 2.92, p = 0.024) predicted hard events. Persistent negative T waves 4 months after first AMI were independently associated with a worse outcome, whereas Q-wave regression has no long-term prognostic importance. (C) 2002 by Excerpta Medica, Inc. [less ▲]

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See detailPersistent organic pollutants and methoxylated PBDEs in harbour porpoises from the North Sea from 1990 until 2008. Young wildlife at risk?
Weijs, Liesbeth; van Elk, Cornelis; Das, Krishna ULg et al

in Science of the Total Environment (2010), 409

n the European North Sea, harbour porpoises are top predators with relatively long life spans and a limited capacity for metabolic biotransformation of contaminants compared to some other marine mammal ... [more ▼]

n the European North Sea, harbour porpoises are top predators with relatively long life spans and a limited capacity for metabolic biotransformation of contaminants compared to some other marine mammal species. As such, they are exposed to a mixture of persistent pollutants, such as polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), DDT and metabolites (DDXs), hexachlorobenzene (HCB) and chlordanes (CHLs) that bioaccumulate in their tissues. We report here on the levels of persistent organic pollutants and of the naturally-produced methoxylated PBDEs (MeO-PBDEs) in blubber, liver and kidney of harbour porpoise neonates (n = 3), calves (n = 15), juveniles (n = 6) and adults (n = 4) of the southern North Sea. Concentrations of almost all contaminant classes decrease slightly in all age groups over the period 1990–2008. For some classes (e.g. PCBs and DDXs) however, levels seem to increase little in harbour porpoise calves. In all animals, blubber had the highest concentrations, followed by liver and kidney, whereas liver and kidney were the preferred tissues for several compounds, such as octa- and deca-PCBs. Our data suggest that harbour porpoises calves are exposed to higher or comparable concentrations of POPs and of MeO-PBDEs and somewhat different patterns of selected POPs than adults, potentially placing them, and the entire population, at a disproportionate risk for exposure-related health effects. [less ▲]

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See detailPersistent organic pollutants in wild seabass (Dicentrarchus labrax) from the Northeast atlantic coastal regions and relationship with thyroid hormone levels
Schnitzler, Joseph ULg; Thomé, Jean-Pierre ULg; Das, Krishna ULg

Poster (2008, October 30)

Polychlorinated biphenyls (PCBs) and organochlorine pesticides like Dichloro-Diphenyl-Trichloroethane (DDTs), Hexachlorocyclohexanes (HCHs), Aldrin and Dieldrin were analysed in the muscle of sea bass ... [more ▼]

Polychlorinated biphenyls (PCBs) and organochlorine pesticides like Dichloro-Diphenyl-Trichloroethane (DDTs), Hexachlorocyclohexanes (HCHs), Aldrin and Dieldrin were analysed in the muscle of sea bass (Dicentrarchus labrax) sampled in coastal regions near several important European river mouths (Garonne, Charente, Loire, Seine and Scheldt). These organochlorinated compounds are known to influence the endocrine system of many fish species and mammals and are thus qualified as endocrine disrupters. To highlight a potentially harmful effect of these compounds on the thyroid function of these fishes, we measured the muscular concentrations of thyroid hormones T3 and T4 by Radio-Immuno-Assay. The contamination levels were as follows: the highest concentrations were measured in individuals collected from the coastal region near the Scheldt > Seine > Loire > Charente and the lowest levels were observed in sea bass from coastal regions near the Garonne (from 2422 to 6188 ng.g-1 lw). The measured levels were generally higher than those reported in literature in sea bass from other regions in the Mediterranean Sea. Contamination patterns were different depending on the sampling area and thus the river input of pollutants. The multivariate statistical analysis revealed a significant relationship between the measured persistent organic pollutants and thyroid hormones in muscle. We cannot exclude the assumption that an endocrine disruption of the thyroid related to these pollutants could be the origin of these modifications of the thyroid hormone concentrations. [less ▲]

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