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Peer Reviewed
See detailEndomyocardial biopsy by two - dimensional echocardiography
Pierard, Luc ULg; El-Allaf, Dia ULg; D'Orio, Vincenzo ULg et al

in European Heart Journal (1984), 5

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See detailEndophénotypes cognitifs dans la schizophénie: une revue de la littérature
Xhenseval, L; Blairy, Sylvie ULg

in Revue Francophone de Clinique Comportementale et Cognitive (2013), 18(3), 2-20

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See detailEndoprotheses coronaires pharmaco-actives chez les patients diabetiques.
Nyssen, Astrid; Legrand, Victor ULg; Scheen, André ULg

in Revue Médicale Suisse (2008), 4(168), 1806-10

In diabetic patients, the use of drug-eluting stents (paclitaxel-PES or sirolimus-SES) reduces the risk of restenosis as compared to bare-metal stents. However, the risk of (very) late thrombosis is ... [more ▼]

In diabetic patients, the use of drug-eluting stents (paclitaxel-PES or sirolimus-SES) reduces the risk of restenosis as compared to bare-metal stents. However, the risk of (very) late thrombosis is higher with drug-eluting stents than with bare-metal stents. All together, the incidence of major cardiovascular events is reduced with drug-eluting stents, mainly resulting from a diminution of revascularisation procedures rather than from a reduction in myocardial infarcts or cardiovascular deaths. Attempts to compare SES and PES gave discordant results in both randomised trials and registries. Efficacious antiplatelet therapy in the long run is mandatory in all diabetic patients treated with drug-eluting stents. [less ▲]

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See detailEndoscopic endonasal resection of the odontoid process as a standalone decompressive procedure for basilar invagination in Chiari type I malformation.
SCHOLTES, Félix ULg; Signorelli, F.; McLaughlin, N. et al

in Minimally invasive neurosurgery : MIN (2011), 54(4), 179-82

BACKGROUND: The expanded endonasal approach of the cranio-cervical junction provides comfortable working space while avoiding some of the disadvantages of the transoral route. We report a purely endonasal ... [more ▼]

BACKGROUND: The expanded endonasal approach of the cranio-cervical junction provides comfortable working space while avoiding some of the disadvantages of the transoral route. We report a purely endonasal endoscopic resection of the odontoid process for basilar invagination in a patient with a Chiari type I malformation, without posterior decompression or fusion. CASE REPORT: A 54-year-old female patient presented with cranial nerve and brainstem deficits. CT and MRI showed a Chiari type I malformation and compression of the medulla by basilar invagination of the odontoid process. The tip of the latter was displaced up to the bulbo-pontine sulcus. The odontoid process was resected via the expanded endoscopic endonasal approach, without additional posterior decompression or fusion. The post-operative course was uneventful, including the absence of velopharyngeal insufficiency. Neurological deficits regressed rapidly. The preoperative cervical pain virtually disappeared. At 9 months follow-up, the patient had normal activity with minimal residual neurological deficits. Post-op dynamic radiography and CT showed stability of the cranio-cervical junction. CONCLUSION: Decompression of the bulbomedullary junction by purely endoscopic transnasal resection of the odontoid process is well tolerated and efficient. Immediate stabilization is not mandatory in all cases of congenital causes of basilar invagination. [less ▲]

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See detailEndoscopic laser treatment of uterine malformations.
Donnez, Jacques; NISOLLE, Michelle ULg

in Human Reproduction (1997), 12(7), 1381-7

Hysteroscopic resection of an intrauterine septum may benefit patients suffering from infertility or recurrent pregnancy loss. A partial or complete uterine septum can be easily resected using a Nd-YAG ... [more ▼]

Hysteroscopic resection of an intrauterine septum may benefit patients suffering from infertility or recurrent pregnancy loss. A partial or complete uterine septum can be easily resected using a Nd-YAG laser. If present, the vaginal septum may also be removed during the same procedure. The reproductive outcome of women treated by operative hysteroscopy for an intrauterine septum is reviewed. To avoid pregnancy in a non-communicating rudimentary horn, the removal of the horn and the homolateral tube may be performed by either bipolar coagulation or a CO2 laser. [less ▲]

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See detailEndoscopic management of ectopic pregnancy.
Donnez, Jacques; NISOLLE, Michelle ULg

in Bailliere's Clinical Obstetrics & Gynaecology (1994), 8(4), 707-2

The rationale for the conservative management of ectopic pregnancy is the preservation of reproductive potential. Removal of trophoblast through a linear incision (salpingotomy) can be easily performed by ... [more ▼]

The rationale for the conservative management of ectopic pregnancy is the preservation of reproductive potential. Removal of trophoblast through a linear incision (salpingotomy) can be easily performed by endoscopy. The injection of vasopressin into the broad ligament is required in less than 10% of cases and its routine use is not recommended because of the risk of severe side-effects. The techniques in cases of isthmic or cornual tubal pregnancy are also described. Other alternatives such as expectant management, methotrexate, RU 486 and prostaglandins have also recently been proposed. Although methotrexate therapy has been demonstrated to be effective in cases of unruptured tubal pregnancy, further studies are needed to determine whether or not this medical therapy is a safer option than laparoscopic surgery and to compare the subsequent intrauterine and recurrent ectopic pregnancy rates. Endoscopic salpingotomy is an efficacious procedure. Indeed, residual trophoblast is found in only 5% of cases after this surgical procedure. In these cases of persistent trophoblast, methotrexate is proposed as the medical approach of choice. Evaluation of the postoperative fertility after linear salpingotomy demonstrates an intrauterine pregnancy rate of 63% and a recurrent ectopic pregnancy rate of 8%. In conclusion, endoscopic management of tubal pregnancy is a safe and efficacious therapy. The contraindications are relative and depend essentially on the surgeon's experience. [less ▲]

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See detailEndoscopie à l'effort : les examens sur piste et sur tapis roulant sont-ils équivalents ?
Van Erck, Emmanuelle ULg; Frippiat, Thibault ULg; Dupuis, Marie-Capucine ULg et al

in Proceedings des Journées annuelles de l’Association vétérinaire équine française (2009) (2009, October)

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See detailEndoscopy and Surgery: A Matter of Diagnostic Enlightenment & Therapeutic Liberty
Bertrand, Cl; Burnon, D.; Carly, B. et al

in Acta Chirurgica Belgica (2011), 111(4), 200-204

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See detailEndosulfan effects on Rana dalmatina tadpoles: Quantitative developmental and behavioural analysis
Lavorato, Manuela; Bernabo, Ilaria; Crescente, Antonio et al

in Archives of Environmental Contamination & Toxicology (2013), 64(2), 253-262

Endosulfan is an organochlorine pesticide that was recently labeled as a persistent organic pollutant, but it is still widely employed, particularly in developing countries. The goal of this study is to ... [more ▼]

Endosulfan is an organochlorine pesticide that was recently labeled as a persistent organic pollutant, but it is still widely employed, particularly in developing countries. The goal of this study is to evaluate the acute (LC50) and chronic effects (developmental and behavioural traits) of this insecticide on Rana dalmatina tadpoles after exposure to ecologically relevant concentrations (0.005, 0.01, and 0.05 mg/L) by applying video-tracking techniques to evaluate the quantitative effect of endosulfan on amphibian behavioural patterns. The 96 h LC50 value was 0.074 mg endosulfan/L. Tadpoles chronically exposed to 0.01 and 0.05 mg endosulfan/L underwent high mortality rate, decreased larval growth, delayed development, and increased incidence of malformations, and they did not reach metamorphosis by the end of the experiment. Moreover, tadpoles exposed to these concentrations exhibited several abnormalities in swimming patterns, such as shorter distance moved, swirling, resting, and unusual use of space. The exposure to 0.005 mg endosulfan/L did not cause any significant effects on behaviour, larval growth, or development, but we observed a significant decrease in both survival and time to metamorphosis. We showed that developmental abnormalities are dose-dependent and that the pesticide effects could differ depending on the endosulfan concentration and the species tested. We also validated the hypothesis that behavioural analysis, along with the use of new analytical methods, could be a useful tool in amphibian ecotoxicological studies. [less ▲]

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See detailEndosymbiont-bearing trypanosomatids: kinetoplast ultrastructural characterization
Motta, M C M; Cavalcanti, DP; De Souza, W et al

Poster (2001)

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See detailEndosymbiont-bearing trypanosomatids: kinetoplast ultrastructural characterization
Cavalcanti, DP; Thiry, Marc ULg; De Souza, W et al

Poster (2001)

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See detailEndosymbiont-bearing trypanosomatids: kinetoplast ultrastructural characterization
Cavalcanti, DP; Thiry, Marc ULg; De Souza, W et al

Poster (2001)

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See detailEndothelial Cell Intracellular Ca2+ Concentration Is Increased Upon Breast Tumor Cell Contact and Mediates Tumor Cell Transendothelial Migration
Lewalle, J. M.; Cataldo, Didier ULg; Bajou, Khalid ULg et al

in Clinical & Experimental Metastasis (1998), 16(1), 21-9

Tumor cell extravasation is a determinant step in the process of hematogenous metastasis. The signal transduction pathways involved in the interactions between tumor cells and the vascular endothelium ... [more ▼]

Tumor cell extravasation is a determinant step in the process of hematogenous metastasis. The signal transduction pathways involved in the interactions between tumor cells and the vascular endothelium during transendothelial migration are still undefined. In the present study, we have investigated the influence of human breast adenocarcinoma cells (MCF7) on human umbilical vein endothelial cell (HUVEC) intracellular Ca2+ concentration ([Ca2+]i). We show that the contact between MCF7 cells and a confluent HUVEC monolayer induces an immediate and transient increase in HUVEC [Ca2+]i. This [Ca2+]i rise could not be elicited by tumor cell-conditioned medium, isolated tumor cell membranes, inert beads or normal breast epithelial cells, demonstrating the involvement of specific recognition mechanisms between MCF7 cells and HUVEC. Depletion of HUVEC intracellular Ca2+ stores by the endoplasmic reticulum Ca2+-ATPase inhibitor thapsigargin as well as the selective depletion of inositol 1,4,5-triphosphate (IP3)-sensitive Ca2+ stores by prior activation of HUVEC using histamine resulted in a complete inhibition of tumor cell-induced [Ca2+]i elevation. Similar results were obtained when HUVEC monolayers were treated with the tyrosine kinase inhibitor herbimycin A, suggesting a role for tyrosine kinase-associated cell surface receptors in tumor cell-endothelial cell interactions. The depletion of HUVEC intracellular Ca2+ stores by thapsigargin was also shown to delay MCF7-induced endothelial cell disjunction, to prevent their spreading on the subendothelial extracellular matrix and transendothelial migration in vitro. These results suggest that transient changes in endothelial [Ca2+]i may govern multiple steps of tumor cell extravasation. [less ▲]

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See detailEndothelial cell-driven regulation of CD9 or motility-related protein-1 expression in multiple myeloma cells within the murine 5T33MM model and myeloma patients.
De Bruyne, Elke; Andersen, T. L.; De Raeve, Hendrik et al

in Leukemia : Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K (2006), 20(10), 1870-9

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See detailEndothelial LGALS9 splice variant expression in endothelial cell biology and angiogenesis
Heusschen, Roy ULg; Schulkens, Iris; van Beijnum, Judy et al

in Biochimica et Biophysica Acta - Molecular Basis of Disease (2014)

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See detailEndothelin in the equine hypoxic pulmonary vasoconstrictive response to acute hypoxia
Benamou, A. E.; Marlin, D. J.; Lekeux, Pierre ULg

in Equine Veterinary Journal (2001), 33(4), 345-353

Elevated concentrations of endothelin (ET), a potent endothelium-derived vasoactive peptide, have been reported in a number of pathophysiological conditions associated with pulmonary hypertension, both in ... [more ▼]

Elevated concentrations of endothelin (ET), a potent endothelium-derived vasoactive peptide, have been reported in a number of pathophysiological conditions associated with pulmonary hypertension, both in the horse and other species. We have previously shown, both in vitro and in vivo, that the pulmonary and systemic vascular response to exogenous ET is mediated predominantly via ET(A) receptors. Our hypothesis in the present study was that ET is involved in the equine hypoxic pulmonary vasoconstrictive response to acute hypoxia. In this study, we investigated the effects of a selective ET(A) receptor antagonist on hypoxic pulmonary hypertension in the mature horse. Horses were exposed to a 10 min period of hypoxia (F(I)O2 approximately 0.11) on 2 occasions, with and without pretreatment with the selective ET(A) receptor antagonist TBC11251 (10 mg/kg bwt i.v.). Hypoxia increased mean pulmonary artery pressure (PAP) from 18.3+/-0.9 (mean +/- s.e. normoxia) to 28.0+/-0.8 mmHg (hypoxia) in the session without ET(A) receptor antagonism. Carotid arterial pressure (CAP) also increased progressively throughout the period of hypoxic challenge and at the end was 153+/-5 mmHg (hypoxia) compared to during normoxia (140+/-5 mmHg). There was no significant overall effect of ET(A) receptor antagonism on the haemodynamic or ventilatory responses to acute hypoxia. However, between 5 and 10 min of hypoxia there was a trend for the mean PAP to diverge in the 2 treatments, which just failed to reach significance at 10 min of hypoxia (P = 0.053). In conclusion, this study describes the haemodynamic and ventilatory changes in response to a period of acute hypoxia in the adult horse. The results do not support a role for ET as a mediator of acute HPV in the horse, but suggest that it may be involved as a modulator or in the slower (>10 min) phase of HPV. [less ▲]

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See detailEndothelin-1 as a serum biomarker in idiopathic pulmonary fibrosis in dogs
Krafft, Emilie ULg; Heikkilä, H.P.; Jespers, P. et al

in Proceedings of the 20th ECVIM-CA Congress (2010)

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See detailEndothelin-1 is a critical mediator of myogenic tone in tumor arterioles: implications for cancer treatment.
Sonveaux, Pierre; Dessy; MARTINIVE, Philippe ULg et al

in Cancer Research (2004), 1(64), 3209-14

Although derived from the host tissue, the tumor vasculature is under the influence of the tumor microenvironment and needs to adapt to the resistance to blood flow inherent to the dynamics of tumor ... [more ▼]

Although derived from the host tissue, the tumor vasculature is under the influence of the tumor microenvironment and needs to adapt to the resistance to blood flow inherent to the dynamics of tumor growth. Such vascular remodeling can offer selective targets to pharmacologically modulate tumor perfusion and thereby improve the efficacy of conventional anticancer treatments. Radiotherapy and chemotherapy can, indeed, take advantage of a better tumor oxygenation and drug delivery, respectively, both partly dependent on the tumor blood supply. Here, we showed that isolated tumor arterioles mounted in a pressure myograph have the ability, contrary to size-matched healthy arterioles, to contract in response to a transluminal pressure increase. This myogenic tone was exquisitely dependent on the endothelin-1 pathway because it was completely abolished by the selective endothelin receptor A (ETA) antagonist BQ123. This selectivity was additionally supported by the large increase in endothelin-1 abundance in tumors and the higher density of the ETA receptors in tumor vessels. We also documented by using laser Doppler microprobes and imaging that administration of the ETA antagonist led to a significant increase in tumor blood flow, whereas the perfusion in control healthy tissue was not altered. Finally, we provided evidence that acute administration of the ETA antagonist could significantly stimulate tumor oxygenation, as determined by electron paramagnetic resonance oximetry, and increase the efficacy of low-dose, clinically relevant fractionated radiotherapy. Thus, blocking the tumor-selective increase in the vascular endothelin-1/ETA pathway led us to unravel an important reserve of vasorelaxation that can be exploited to selectively increase tumor response to radiotherapy. [less ▲]

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See detailEndothelium in aneurysmal bone cyst.
Aho, H. J.; Aho, A. J.; Pelliniemi, L. J. et al

in Histopathology (1985), 9(4), 381-7

The surface of the large cystic spaces and dilated blood vessels in seven cases of aneurysmal bone cysts was studied. The endothelium of the blood vessels was surrounded by a layer of collagen types IV ... [more ▼]

The surface of the large cystic spaces and dilated blood vessels in seven cases of aneurysmal bone cysts was studied. The endothelium of the blood vessels was surrounded by a layer of collagen types IV and V, and the endothelial cells contained factor VIII related antigen demonstrated by the peroxidase anti-peroxidase technique. Some blood vessels were dilated resembling small aneurysmal spaces. The visible surfaces of the aneurysmal spaces were devoid of collagen types IV and V, and of factor VIII related antigen. Ultrastructural analysis of paraffin embedded sections did not show the characteristic fine structural features of endothelium covering the aneurysmal spaces. It is concluded that the large spaces in aneurysmal bone cysts are devoid of basement membranes and endothelial cells. The absence of endothelium may explain the abundance of haemorrhages in these lesions. Immunocytochemical demonstration of endothelial antigen provides a valuable tool for the differential diagnosis between aneurysmal bone cysts and vascular tumours. [less ▲]

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