49 results on '"Lemkens, P."'
Search Results
2. Dual NEP/ECE inhibition improves endothelial function in mesenteric resistance arteries of 32-week-old SHR
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Lemkens, Pieter, Spijkers, Leon JA, Meens, Merlijn J, Nelissen, Jelly, Janssen, Ben, Peters, Stephan LM, Schiffers, Paul MH, and De Mey, Jo GR
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- 2017
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3. Gait and Falls in Benign Paroxysmal Positional Vertigo: A Systematic Review and Meta-analysis.
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Pauwels, Sara, Casters, Laura, Lemkens, Nele, Lemmens, Winde, Meijer, Kenneth, Meyns, Pieter, van de Berg, Raymond, and Spildooren, Joke
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Background and Purpose: Benign paroxysmal positional vertigo (BPPV) is one of the most common vestibular disorders, and is treated effectively with particle repositioning maneuvers (PRM). The aim of this study was to assess the influence of BPPV and treatment effects of PRM on gait, falls, and fear of falling. Methods: Three databases and the reference lists of included articles were systematically searched for studies comparing gait and/or falls between (1) people with BPPV (pwBPPV) and controls and (2) pre- and posttreatment with PRM. The Joanna Briggs Institute critical appraisal tools were used to assess risk of bias. Results: Twenty of the 25 included studies were suitable for meta-analysis. Quality assessment resulted in 2 studies with high risk of bias, 13 with moderate risk, and 10 with low risk. PwBPPV walked slower and demonstrated more sway during tandem walking compared with controls. PwBPPV also walked slower during head rotations. After PRM, gait velocity during level walking increased significantly, and gait became safer according to gait assessment scales. Impairments during tandem walking and walking with head rotations did not improve. The number of fallers was significantly higher for pwBPPV than for controls. After treatment, the number of falls, number of pwBPPV who fell, and fear of falling decreased. Discussion and Conclusions: BPPV increases the odds of falls and negatively impacts spatiotemporal parameters of gait. PRM improves falls, fear of falling, and gait during level walking. Additional rehabilitation might be necessary to improve gait while walking with head movements or tandem walking. Video Abstract available for more insights from the authors (see the Supplemental Digital Content Video, available at: http://links.lww.com/JNPT/A421). [ABSTRACT FROM AUTHOR]
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- 2023
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4. Pharmacokinetic and pharmacodynamic properties of SOL1: A novel dual inhibitor of neutral endopeptidase and endothelin converting enzyme
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Nelissen, J., Lemkens, P., Sann, H., Bindl, M., Bassissi, F., Jasserand, D., De Mey, J.G.R., and Janssen, B.J.A.
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- 2012
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5. Effect of adenotonsillectomy on the use of respiratory medication
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Piessens, P., Hens, G., Lemkens, N., Schrooten, W., Debruyne, F., and Lemkens, P.
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- 2012
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6. Occupational Noise, Smoking, and a High Body Mass Index are Risk Factors for Age-related Hearing Impairment and Moderate Alcohol Consumption is Protective: A European Population-based Multicenter Study
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Fransen, Erik, Topsakal, Vedat, Hendrickx, Jan-Jaap, Van Laer, Lut, Huyghe, Jeroen R., Van Eyken, Els, Lemkens, Nele, Hannula, Samuli, Mäki-Torkko, Elina, Jensen, Mona, Demeester, Kelly, Tropitzsch, Anke, Bonaconsa, Amanda, Mazzoli, Manuela, Espeso, Angeles, Verbruggen, Katia, Huyghe, Joke, Huygen, Patrick L. M., Kunst, Sylvia, Manninen, Minna, Diaz-Lacava, Amalia, Steffens, Michael, Wienker, Thomas F., Pyykkö, Ilmari, Cremers, Cor W. R. J., Kremer, Hannie, Dhooge, Ingeborg, Stephens, Dafydd, Orzan, Eva, Pfister, Markus, Bille, Michael, Parving, Agnete, Sorri, Martti, Van de Heyning, Paul, and Van Camp, Guy
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- 2008
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7. The Importance of Frailty in Older Adults With Benign Paroxysmal Positioning Vertigo
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Pauwels, Sara, Lemkens, Nele, Lemmens, Winde, Meijer, Kenneth, Meyns, Pieter, Berg, Raymond V. D., and Spildooren, Joke
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- 2025
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8. G-protein βγ subunits in vasorelaxing and anti-endothelinergic effects of calcitonin gene-related peptide
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Meens, MJPMT, Mattheij, NJA, van Loenen, PB, Spijkers, LJA, Lemkens, P, Nelissen, J, Compeer, MG, Alewijnse, AE, and De Mey, JGR
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- 2012
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9. PHARMACOLOGICAL EVIDENCE FOR NITRIC OXIDE AND ENDOTHELIN-1 IN MYOENDOTHELIAL COUPLING IN RAT SMALL MESENTERIC ARTERIES
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Hilgers, R H, Lemkens, P, Falck, J R, and De Mey, J GR
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- 2008
10. (Adeno)tonsillectomy: what is the impact on the immune system?
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Karen Beckers, Tessa Dhaeze, Isolde Vandewal, Gytha Slechten, Elke Rutten, Jolien Jansen, Nico Hustings, Lemkens, N., Lemkens, P., Beckers, Karen, DHAEZE, Tessa, Vandewal, I., Slechten, G., RUTTEN, Els, Jansen, J., Hustings, N., LEMKENS, Nele, and LEMKENS, Peter
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(adeno)tonsillectomy ,immunology ,Waldeyer's ring ,immunoglobulins ,lymphocytes - Abstract
Objectives: The effect of (adeno) tonsillectomy (ATE) on the immune system is still a point of discussion. In this study, we investigate the local and systemic immunological consequences of removing (adeno) tonsillar tissue, based on changes in immunoglobulin (Ig) levels, T and B lymphocyte counts, and frequency of pre- and post-operative upper airway infections. Methodology: We performed a literature review and included six studies examining short-term effects (= 1 year post-operative) of ATE on humoral and cellular immunity. The use of medication, frequency of visits to the doctor, cost-effectiveness of the procedure, and quality of life pre- and post-operatively were also used as outcome parameters for long-term effects. Results: In the short term, only one study showed a significant post-operative decrease in IgA, IgM, and IgG levels, as well as cytotoxic T-lymphocyte count. Two studies noted both a significant decrease in IgG levels and a significant increase in T helper cells. No significant change in Ig levels or lymphocyte counts were observed after ATE in the long term. Conclusion: There is no evidence that ATE compromises the immune system in either the short or long term. Physicians and researchers agree that ATE is an effective treatment for recurrent adenotonsillitis that improves quality of life and reduces the frequency of upper airway infections. However, additional long-term and large-scale studies are needed.
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- 2017
11. Laryngeal Manifestations of Inflammatory Bowel Disease.
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Loos, Elke, Lemkens, Peter, Poorten, Vincent Vander, Humblet, Evelien, and Laureyns, Griet
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Summary Background Laryngeal involvement in inflammatory bowel disease is rare. Only 12 cases of laryngeal involvement in Crohn disease have been reported until now. Moreover, only one case of laryngeal manifestations in ulcerative colitis has been reported so far. Materials and Methods In this article, we present a patient with ulcerative colitis, who consulted our ear, nose, and throat (ENT) clinic with laryngeal complaints. Furthermore, a review of current literature was performed. Results A concise overview of this rare extraintestinal manifestation and other ENT manifestations of inflammatory bowel diseases is provided. Conclusions Laryngeal manifestations in inflammatory bowel disease are very rare, but these manifestations should be known by the otorhinolaryngologist. [ABSTRACT FROM AUTHOR]
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- 2019
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12. Tonsillectomy compared to acute tonsillitis in children: a comparison study of societal costs
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Leupe P, Hox V, Debruyne F, Ward SCHROOTEN, Nv, Claes, Lemkens N, and Lemkens P
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Adult ,Male ,Parents ,Adolescent ,Infant ,Health Care Costs ,Cohort Studies ,Tonsillitis ,Belgium ,Cost of Illness ,Child, Preschool ,Absenteeism ,Humans ,Female ,Child ,Tonsillectomy - Abstract
Tonsillectomy is one of the most commonly performed surgical procedures in children; its main indications are recurrent episodes of acute tonsillitis and adenotonsillar hypertrophy. The effectiveness of tonsillectomy for severe recurrent tonsillitis is generally accepted; however its socio-economic cost is less well investigated. This study aims to determine and compare the societal cost of a tonsillectomy and a severe throat infection.The costs for both tonsillectomy and severe throat infection were evaluated. Costs of the surgical procedure and hospital stay were calculated based on resource use and personnel input at the participating hospital. The cost of work-related disability for both treatments was measured based on a questionnaire filled in by 275 parents of children undergoing a tonsillectomy. Data from two Belgian institutions (NIS and FOD) were used to calculate the cost of parents' absenteeism.An episode of acute tonsillitis in the child results in a longer period of parents' work absenteeism (mean of 3.1 +/- 0.3 days) compared to tonsillectomy (2.2 +/- 0.2 days). The cost of economic productivity loss amounts to 613 Euros (NIS) or 759 Euros (FOD) for acute tonsillitis and 435 Euros (NIS) or 539 Euros (FOD) for a tonsillectomy. The medical costs linked to the surgical procedure at the local department correspond to 535 Euros and for an acute tonsillitis to 46 Euros.From societal perspective, a tonsillectomy costs the equivalent of 1.4 times the cost of a severe throat infection. This indicates that in children suffering from recurrent acute tonsillitis, watchful waiting results in a higher cost compared to tonsillectomy, given the cumulative costs of parents' absenteeism.
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- 2012
13. G-protein beta gamma subunits in vasorelaxing and anti-endothelinergic effects of calcitonin gene-related peptide
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Meens, M. J. P. M. T., Mattheij, N. J. A., van Loenen, P. B., Spijkers, L. J. A., Lemkens, P., Nelissen, J., Compeer, M. G., Alewijnse, A. E., De Mey, J. G. R., Medical Biochemistry, Other departments, ACS - Amsterdam Cardiovascular Sciences, Pharmacology and pharmacotherapeutics, Promovendi CD, Biochemie, Pharmacology and Personalised Medicine, Farmacologie en Toxicologie, and RS: CARIM School for Cardiovascular Diseases
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vascular smooth muscle ,G-proteins ,endothelin ,CGRP receptor ,7-transmembrane domain receptors - Abstract
BACKGROUND AND PURPOSE Calcitonin gene-related peptide (CGRP) has been proposed to relax vascular smooth muscle cells (VSMC) via cAMP and can promote dissociation of endothelin-1 (ET-1) from ETA receptors. The latter is not mimicked by other stimuli of adenylate cyclases. Therefore, we evaluated the involvement of G-protein beta? subunits (G beta?) in the arterial effects of CGRP receptor stimulation. EXPERIMENTAL APPROACH To test the hypothesis that instead of a subunits of G-proteins (Gas), Gbg mediates the effects of CGRP receptor activation, we used (i) rat isolated mesenteric resistance arteries (MRA), (ii) pharmacological modulators of cyclic nucleotides; and (iii) low molecular weight inhibitors of the functions of Gbg, gallein and M119. To validate these tools with respect to CGRP receptor function, we performed organ bath studies with rat isolated MRA, radioligand binding on membranes from CHO cells expressing human CGRP receptors and cAMP production assays in rat cultured VSMC. KEY RESULTS In isolated arteries contracted with K+ or ET-1, IBMX (PDE inhibitor) increased sodium nitroprusside (SNP)-and isoprenaline (ISO)-but not CGRP-induced relaxations. While fluorescein (negative control) was without effects, gallein increased binding of [ 125I]-CGRP in the absence and presence of GTPgS. Gallein also increased CGRP-induced cAMP production in VSMC. Despite these stimulating effects, gallein and M119 selectively inhibited the relaxing and anti-endothelinergic effects of CGRP in isolated arteries while not altering contractile responses to K+ or ET-1 or relaxing responses to ISO or SNP. CONCLUSION AND IMPLICATIONS Activated CGRP receptors induce cyclic nucleotide-independent relaxation of VSMC and terminate arterial effects of ET-1 via Gbg.
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- 2012
14. Clinical aspects of chronic ENT inflammation in children
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Mansbach, A-L, Brihaye, P., Casimir, G., Dhooghe, I, Gordts, Frans, Halewyck, Stijn, Hanssens, L, Lemkens, N, Lemkens, P, Leupe, P, Mulier, S, Van Crombrugge, L, Van Der Veken, P, Vanhoecke, H, Jorissen, M., Specialities, and Microbiology and Infection Control
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tympanic membrane ,inflammation ,otorhinolaryngologic diseases ,pharyngitis ,adenoiditis ,laryngotracheitis ,otitis media ,trigger factors ,rhinosinusitis ,tonsillitis - Abstract
In children, all cavities are particularly prone to the development of chronic inflammation. This is due to many predisposing factors, of which the most common are unfavourable anatomy, absence of nasal blowing, day care attendance, allergy, immature immunity, gastro-oesophageal reflux and tobacco smoke exposure. The aim of this paper is to outline the most specific paediatric clinical aspects of chronic pharyngo-tonsillitis, rhinosinusitis, otitis media, adenoiditis and laryngotracheitis and the important influence that some of these pathologies exert on the others.
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- 2012
15. Specific medical and surgical treatment for chronic inflammatory diseases in children
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Boudewyns, A., Antunes, J., Bernheim, N., Claes, J., Dooy, J., Leenheer, E., Roeck, K., Peter Hellings, Varebeke, S. Janssens, Jorissen, M., Ketelslagers, K., Lemkens, N., Lemkens, P., Leupe, P., Malfroot, A., Maris, M., Michiels, E., Crombrugge, L., Vandenplas, Y., Verhulst, S., Eloy, P., Watelet, J. -B, Pediatrics, Growth and Development, and Ear, Nose and Throat
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Inflammation ,Otorhinolaryngologic Diseases ,Chronic Disease ,Practice Guidelines as Topic ,Vaccination ,Humans ,inflammatory ,Child ,Children ,Otorhinolaryngologic Surgical Procedures - Abstract
Specific medical and surgical treatment for chronic inflammatory diseases in children. Treatment for chronic inflammatory conditions in children should take into account the specific pathophysiological and clinical processes underlying these disorders. These guidelines provide a framework for both the medical and surgical treatment of chronic inflammatory diseases such as otitis media, allergic rhinitis and chronic rhinosinusitis, chronic inflammation of tonsils and adenoids, and laryngitis. In addition, the role of vaccinations and immunomodulatory therapies is discussed. Whenever possible, the evidence levels for specific treatments comply with the Oxford Levels of Evidence
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- 2012
16. Specific medical and surgical treatment for chronic inflammatory diseases in children.
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UCL - (MGD) Service d'oto-rhino-laryngologie, UCL - SSS/IREC/PNEU - Pôle de Pneumologie, ORL et Dermatologie, Boudewyns, A., Antunes, J., Bernheim, N., Claes, J., De Dooy, J., De Leenheer, E., De Roeck, K., Hellings, P., de Varebeke, S.J., Jorissen, M., Ketelslagers, K., Lemkens, N., Lemkens, P., Leupe, P., Malfroot, A., Maris, M., Michiels, E., Van Crombrugge, L., Vandenplas, Y., Verhulst, S., Eloy, Philippe, Watelet, Jean-Baptiste, UCL - (MGD) Service d'oto-rhino-laryngologie, UCL - SSS/IREC/PNEU - Pôle de Pneumologie, ORL et Dermatologie, Boudewyns, A., Antunes, J., Bernheim, N., Claes, J., De Dooy, J., De Leenheer, E., De Roeck, K., Hellings, P., de Varebeke, S.J., Jorissen, M., Ketelslagers, K., Lemkens, N., Lemkens, P., Leupe, P., Malfroot, A., Maris, M., Michiels, E., Van Crombrugge, L., Vandenplas, Y., Verhulst, S., Eloy, Philippe, and Watelet, Jean-Baptiste
- Abstract
Treatment for chronic inflammatory conditions in children should take into account the specific pathophysiological and clinical processes underlying these disorders. These guidelines provide a framework for both the medical and surgical treatment of chronic inflammatory diseases such as otitis media, allergic rhinitis and chronic rhinosinusitis, chronic inflammation of tonsils and adenoids, and laryngitis. In addition, the role of vaccinations and immunomodulatory therapies is discussed. Whenever possible, the evidence levels for specific treatments comply with the Oxford Levels of Evidence.
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- 2012
17. Clinical aspects of chronic ENT inflammation in children.
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Mansbach, Anne-Laure, Brihaye, Pierre, Casimir, Georges, Dhooghe, I., Gordts, F, Halewyck, S, Hanssens, Laurence, Lemkens, N, Lemkens, P, Leupe, P, Mulier, Sandra, Van Crombrugge, L, Van der Veken, Pieter, Van Hoecke, Helen, Mansbach, Anne-Laure, Brihaye, Pierre, Casimir, Georges, Dhooghe, I., Gordts, F, Halewyck, S, Hanssens, Laurence, Lemkens, N, Lemkens, P, Leupe, P, Mulier, Sandra, Van Crombrugge, L, Van der Veken, Pieter, and Van Hoecke, Helen
- Abstract
In children, all ENT cavities are particularly prone to the development of chronic inflammation. This is due to many predisposing factors, of which the most common are unfavourable anatomy, absence of nasal blowing, day care attendance, allergy, immature immunity, gastro-oesophageal reflux and tobacco smoke exposure. The aim of this paper is to outline the most specific paediatric clinical aspects of chronic pharyngo-tonsillitis, rhinosinusitis, otitis media, adenoiditis and laryngotracheitis and the important influence that some of these pathologies exert on the others., Journal Article, Review, SCOPUS: re.j, info:eu-repo/semantics/published
- Published
- 2012
18. Thrombospondin-1 in Early Flow-Related Remodeling of Mesenteric Arteries from Young Normotensive and Spontaneously Hypertensive Rats
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Lemkens, P, primary, Boari, GEM, additional, Fazzi, GE, additional, Janssen, GMJ, additional, Murphy-Ullrich, JE, additional, Schiffers, PMH, additional, and De Mey, JGR, additional
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- 2012
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19. Dual neural peptidase/endothelin-converting enzyme inhibition improves endothelial function in mesenteric resistance arteries of young spontaneously hypertensive rats.
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Lemkens P, Nelissen J, Meens MJ, Janssen BJ, Schiffers PM, and De Mey JG
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- 2012
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20. Calcitonin gene-related peptide terminates long-lasting vasopressor responses to endothelin 1 in vivo.
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Meens, Merlijn J. P. M. T., Mattheij, Nadine J. A., Nelissen, Jelly, Lemkens, Pieter, Compeer, Matthijs G., Janssen, Ben J. A., and De Mey, Jo G. R.
- Abstract
Slow dissociation of endothelin 1 from its endothelin A receptors is responsible for the long-lasting vasoconstrictor effects of the peptide. We showed recently that calcitonin gene-related peptide selectively terminates long-lasting contractile responses to endothelin 1 in isolated rat mesenteric arteries. Here we assessed whether the antiendothelinergic effect of calcitonin gene-related peptide is vascular bed specific and may terminate long-lasting pressor responses to exogenous and locally produced endothelin 1 in vivo. Regional heterogeneity of the calcitonin gene-related peptide/endothelin A receptor cross-talk was explored in arteries isolated from various rat organs. Endothelin A receptor-mediated arterial contractions were terminated by calcitonin gene-related peptide in rat mesenteric, renal, and spermatic arteries but not in basilar, coronary, epigastric, gastric, splenic, and saphenous arteries. Endothelin A receptor antagonism only ended endothelin 1-induced contractions in spermatic arteries. In anesthetized rats, instrumented with Doppler flow probes to record regional blood flows, long-lasting pressor and vasoconstrictor responses to an intravenous bolus injection of endothelin 1 or big endothelin 1 were transiently reduced by sodium nitroprusside (NO donor) but terminated by intravenously administered calcitonin gene-related peptide. In conscious rats, calcitonin gene-related peptide but not sodium nitroprusside terminated prolonged (>60-minute) pressor responses to endothelin 1 but not those to intravenous infusion of phenylephrine. In conclusion, pressor responses to circulating and locally produced endothelin 1 that are resistant to endothelin receptor antagonism and NO can be terminated by a regionally selective effect of calcitonin gene-related peptide. Calcitonin gene related peptide receptor agonism may represent a novel strategy to treat endothelin 1-associated cardiovascular pathologies. [ABSTRACT FROM AUTHOR]
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- 2011
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21. Influence of Pelvic Floor Muscle Exercises on Full Spectrum Therapy for Nocturnal Enuresis.
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Van Kampen, Marijke, Lemkens, Hilde, Deschamps, Anneleen, Bogaert, Guy, and Geraerts, Inge
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PELVIC floor ,EXERCISE physiology ,TREATMENT of enuresis ,TREATMENT effectiveness ,PEDIATRIC urology ,CONTROL groups ,MOTIVATION (Psychology) in children ,EXERCISE therapy for children - Abstract
Purpose: We investigated the effect of pelvic floor muscle training on the efficacy of full spectrum therapy and maximal voided volume in children with nocturnal enuresis. We also determined factors predicting treatment outcome, full spectrum therapy duration and the relapse rate. Full spectrum therapy is a combination of alarm, reward, timed voiding and drinking, over learning and pelvic floor muscle training. Materials and Methods: A total of 63 consecutive children were referred to the physiotherapy department for full spectrum therapy to resolve nocturnal enuresis, including 32 in the experimental group who underwent full spectrum therapy with pelvic floor muscle training and 31 in the control group who underwent full spectrum therapy without training. Results: There was no significant difference in treatment outcome, duration, maximal voided volume and relapse between the 2 groups. Of all children 89% became dry within 6 months. During the year after treatment 33.3% and 37.9% of the experimental and control groups relapsed, while the relapse rate at 1 year was 7.4% and 20.7%, respectively. Age and child motivation were associated with the duration of success (p = 0.04 and <0.01, respectively). Secondary enuresis and psychosocial problems were factors significantly related to relapse (each p <0.01). Conclusions: There is no beneficial effect of including pelvic floor muscle training in full spectrum therapy. Older children and those with better motivation experienced more rapid success. Factors predicting relapse were secondary enuresis and psychosocial problems. [Copyright &y& Elsevier]
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- 2009
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22. A Novel Z-Score–Based Method to Analyze Candidate Genes for Age-Related Hearing Impairment
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Fransen, Erik, Van Laer, Lut, Lemkens, Nele, Caethoven, Goele, Flothmann, Kris, Govaerts, Paul, Van de Heyning, Paul, and Van Camp, Guy
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Approximately half of the variance of Age-Related Hearing Impairment (ARHI) is attributable to environmental risk factors, and the other half to genetic factors. None of these genes has ever been identified, but the genes involved in monogenic nonsyndromic hearing impairment are good candidates. Here we define and validate a quantitative trait value for ARHI, correcting for age and gender, to allow the genetic study of ARHI as a quantitative trait.
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- 2004
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23. Patient reported outcome measures (PROMs) in children with sleep-disordered breathing undergoing adenotonsillectomy
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Bogaerts M, Ward SCHROOTEN, Lemkens N, Indesteege F, Postelmans T, and Lemkens P
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Male ,Sleep Apnea, Obstructive ,Adolescent ,Health Status ,Adenoidectomy ,Cohort Studies ,Treatment Outcome ,Child, Preschool ,Surveys and Questionnaires ,Quality of Life ,Feasibility Studies ,Humans ,Female ,Prospective Studies ,Child ,Tonsillectomy - Abstract
Patient reported outcome measures (PROMs) asses the health status or health related quality of life from the patient's perspective. The aims of this study were to assess the effect of adenotonsillectomy on symptoms and daily functioning in children with sleep-disordered breathing (SDB) using an electronic questionnaire, and to determine if this is a feasible method to evaluate treatment outcome in this patient population.The electronic questionnaire was administered to the parents of children undergoing adenotonsillectomy for SDB on the day of surgery (T0), and two weeks (T1) and six months (T2) after surgery. The questionnaire scored symptoms in 5 different fields (snoring, sleepiness, behaviour, appetite, and apnoea). Higher scores indicated more pronounced symptoms. The score on T0 measured the preoperative symptoms. The main outcome measure (the change in scores between the postoperative measurements and the preoperative measurement) was analysed using the Wilcoxon signed-rank test.Eighty-eight percent of invited patients participated in the study. Six percent had no access to internet, and another 6% did not wish to participate. Language problems were not reported. Response rates for T1 and T2 were 82.6% and 79.7% respectively. The T1 and T2 scores were significantly lower than the scores on T0 for snoring, behaviour, apnoea, and sleepiness. The T2 appetite score was significantly higher than on T0, which indicates an improvement of appetite.A comparison of pre- and postoperative results from an electronic disease-specific questionnaire indicated significantly improved symptoms and daily functioning in children undergoing adenotonsillectomy for SDB. High participation and response rates indicated it was feasible to assess treatment outcome by means of an electronic questionnaire.
24. Physiology of the mouth and pharynx, Waldeyer's ring, taste and smell
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Bogaerts, M., Deggouj, N., Caroline Huart, Hupin, C., Laureyns, G., Lemkens, P., Rombaux, P., Werff Ten Bosch, J., Gordts, F., Jorissen, M., Pediatrics, Specialities, Growth and Development, and Microbiology and Infection Control
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taste ,stomatognathic diseases ,stomatognathic system ,RESPIRATION ,phonation and speech ,digestive, oral, and skin physiology ,otorhinolaryngologic diseases ,swallowing ,olfaction - Abstract
This paper reviews the contribution of the different parts of the oral cavity and the pharynx to the basic physiology of breathing, phonation, speech, swallowing, and of Waldeyer's ring to the functioning of the immune system. We discuss the development of taste and smell, as well as possibilities for chemosensory testing in children.
25. Are postoperative complications more frequent and more serious after irradiation for laryngeal and hypopharyngeal cancer?
- Author
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Van den Bogaert, W., primary, Ostyn, F., additional, Lemkens, P., additional, and van der Schueren, E., additional
- Published
- 1984
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26. objectivering van de neusdoorgankelijkheid na TPD operatie en neusoperatie
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VANDEBROEK, Els, LEMKENS, P., LAMBRECHTS, I., and SAUER, M.
- Abstract
Situering: In deze studie werd gekeken naar het effect van TPD-operaties en neusoperaties op de neusdoorgankelijkheid en werd getracht een objectivering hiervan te maken. TPD is een heelkundige procedure met als doel de maxilla te verbreden om zo meer ruimte voorzien voor de uitlijning van de tanden. Een nauwe maxilla is de oorzaak is van orthodontische abnormaliteiten zoals een kruisbeet. Bij de neusoperaties werd een septoplastie of een schelpplastie uitgevoerd om de neusdoorgankelijkheid te vergroten. Wanneer de neusademhaling afwezig is en overgeschakeld wordt op mondademhaling valt de druk van de tong op de tandenboog weg waardoor er orthodontische en logopedische afwijkingen ontstaan. Een normale neusademhaling verhoogt de ontwikkeling van de neusholte en zorgt voor een betere levenskwaliteit. Methoden: In de TPD-patiëntengroep werden metingen preoperatief en 2 en 12 weken postoperatief uitgevoerd. In de neusoperatiegroep werden metingen preoperatief en 2 weken postoperatief uitgevoerd. Aan de hand van een vragenlijst werden de subjectieve ervaringen van patiënten wat betreft hun neusfuncties beoordeeld. De objectieve resultaten werden verkregen door middel van verschillende testen. Een eerste test was de PNIF test. Hiermee werd het debiet weergegeven dat tijdens één krachtige inspiratie door de neus stroomt. Een tweede test was de akoestische rhinometrie test. Hiermee werd de oppervlakte en het volume van de neus op een bepaalde afstand berekend. De laatste test was de rhinomanometrie test. Hiermee werd het debiet dat door de neus gaat tijdens in- en expiratie weergegeven. Resultaten: Bij de gedane onderzoeken in de TPD-patiëntengroep werd er slechts 1 significante waarde gevonden. Bij de patiënten die een neusoperatie ondergingen werd er een significante daling van de neusobstructie postoperatief gevonden. Verder werd in deze groep slechts enkele significante wijzigingen van de resultaten gevonden bij de preen postoperatieve vergelijking van de resultaten. Conclusies: Uit dit onderzoek kunnen we besluiten dat de TPD-operatie geen invloed heeft op de neusdoorgankelijkheid na 2 weken. Dit kunnen we concluderen omdat er zeer weinig significante waardes in deze groep werden gevonden. Het zijn echter slechts preliminaire resultaten daar het aantal onderzochte patiënten zeer klein was en ook omdat de volledige distractie op 2 weken nog niet had plaatsgevonden. Een voorzetting van het onderzoek is vereist. Wat betreft de neusoperaties kon er geen concluderend besluit getrokken worden. Er werden een aantal significante waardes gevonden maar deze zijn niet voldoende om te concluderen dat de operatie na 2 weken al effect had op de neusdoorgankelijkheid. Wanneer er in de patiëntengroep die een neusoperatie ondergingen een correlatie werd uitgevoerd kon hieruit besloten worden dat de subjectieve ervaring van de patiënt met betrekking tot de neusfuncties over het algemeen overeenstemde met de gevonden objectieve resultaten.
- Published
- 2007
27. Unexpected overnight stay following ENT day-case surgery: a 5-year audit.
- Author
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Michiels E, Pullinx L, Desticker C, Lemkens N, and Lemkens P
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Child, Child, Preschool, Clinical Audit, Female, Humans, Infant, Male, Middle Aged, Time Factors, Young Adult, Ambulatory Surgical Procedures, Length of Stay statistics & numerical data, Otorhinolaryngologic Surgical Procedures
- Abstract
Unexpected overnight stay following ENT day-case surgery: a 5-year audit., Problems/objectives: Recent decades have seen a steady reduction in the average duration of hospitalization for all surgical patients, including those undergoing ENT procedures. Correspondingly, the proportion of day surgeries relative to in-patient surgeries has progressively increased. In the present observational study, we aimed to evaluate the proportion of unplanned overnight stays following planned day surgeries in our ENT unit, and the major causes of these unexpected overnight admissions., Methods: From databases, we collected data from all patients who underwent ENT day-case surgery in Ziekenhuis Oost- Limburg between January 2008 and December 2013., Results: A total of 10,440 patients underwent ENT day-case surgery during this period. The overall rate of unexpected overnight admission was 1.86%, with these overnight admissions most commonly due to anaesthetic (46.91%), surgical (19.59%), and organizational (17.01%) reasons. The types of ENT surgery at the greatest risk for prolonged hospitalisation were hemithyroidectomy (12.50%), tympanoplasty (12.15%), and uvulopalatopharyngoplasty (UPPP) (7.81%). We further identified a clear difference in the rate of unexpected overnight stay between surgery scheduled in the morning (1.17%) versus in the afternoon (12.98%)., Conclusions: Our present findings highlight the various reasons for unexpected overnight admission after day-case surgery. To reduce the rate of unexpected overnight stays, we need to better understand these different reasons to support the ongoing search for possible solutions.
- Published
- 2017
28. Facial trauma.
- Author
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Peeters N, Lemkens P, Leach R, Gemels B, Schepers S, and Lemmens W
- Subjects
- Algorithms, Anti-Bacterial Agents therapeutic use, Diagnostic Imaging, Emergency Medical Services, Facial Bones diagnostic imaging, Facial Bones injuries, Facial Bones surgery, Fracture Fixation, Fractures, Bone diagnosis, Fractures, Bone surgery, Humans, Medical History Taking, Physical Examination, Time-to-Treatment, Facial Injuries diagnosis, Facial Injuries surgery
- Abstract
Facial trauma. Patients with facial trauma must be assessed in a systematic way so as to avoid missing any injury. Severe and disfiguring facial injuries can be distracting. However, clinicians must first focus on the basics of trauma care, following the Advanced Trauma Life Support (ATLS) system of care. Maxillofacial trauma occurs in a significant number of severely injured patients. Life- and sight-threatening injuries must be excluded during the primary and secondary surveys. Special attention must be paid to sight-threatening injuries in stabilized patients through early referral to an appropriate specialist or the early initiation of emergency care treatment. The gold standard for the radiographic evaluation of facial injuries is computed tomography (CT) imaging. Nasal fractures are the most frequent isolated facial fractures. Isolated nasal fractures are principally diagnosed through history and clinical examination. Closed reduction is the most frequently performed treatment for isolated nasal fractures, with a fractured nasal septum as a predictor of failure. Ear, nose and throat surgeons, maxillofacial surgeons and ophthalmologists must all develop an adequate treatment plan for patients with complex maxillofacial trauma.
- Published
- 2016
29. Circulating Follicular Regulatory T Cells Are Defective in Multiple Sclerosis.
- Author
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Dhaeze T, Peelen E, Hombrouck A, Peeters L, Van Wijmeersch B, Lemkens N, Lemkens P, Somers V, Lucas S, Broux B, Stinissen P, and Hellings N
- Subjects
- Adult, Antibodies blood, B-Lymphocytes immunology, Female, Forkhead Transcription Factors metabolism, Humans, Immunologic Memory immunology, Inducible T-Cell Co-Stimulator Protein biosynthesis, Influenza A Virus, H1N1 Subtype immunology, Influenza A Virus, H3N2 Subtype immunology, Male, Methylation, Multiple Sclerosis blood, Vaccination, Young Adult, B-Cell Maturation Antigen biosynthesis, Influenza Vaccines immunology, Multiple Sclerosis immunology, T-Lymphocytes, Regulatory immunology, Th17 Cells immunology
- Abstract
Follicular regulatory T cells (TFR) have been extensively characterized in mice and participate in germinal center responses by regulating the maturation of B cells and production of (auto)antibodies. We report that circulating TFR are phenotypically distinct from tonsil-derived TFR in humans. They have a lower expression of follicular markers, and display a memory phenotype and lack of high expression of B cell lymphoma 6 and ICOS. However, the suppressive function, expression of regulatory markers, and FOXP3 methylation status of blood TFR is comparable with tonsil-derived TFR. Moreover, we show that circulating TFR frequencies increase after influenza vaccination and correlate with anti-flu Ab responses, indicating a fully functional population. Multiple sclerosis (MS) was used as a model for autoimmune disease to investigate alterations in circulating TFR. MS patients had a significantly lower frequency of circulating TFR compared with healthy control subjects. Furthermore, the circulating TFR compartment of MS patients displayed an increased proportion of Th17-like TFR. Finally, TFR of MS patients had a strongly reduced suppressive function compared with healthy control subjects. We conclude that circulating TFR are a circulating memory population derived from lymphoid resident TFR, making them a valid alternative to investigate alterations in germinal center responses in the context of autoimmune diseases, and TFR impairment is prominent in MS., (Copyright © 2015 by The American Association of Immunologists, Inc.)
- Published
- 2015
- Full Text
- View/download PDF
30. Mucocutaneous leishmaniasis of the nose: a case report.
- Author
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Menten K, Soentjens P, Caenepeel P, and Lemkens P
- Subjects
- Humans, Male, Middle Aged, Nose Diseases diagnosis, Nose Diseases drug therapy, Leishmaniasis, Mucocutaneous diagnosis, Leishmaniasis, Mucocutaneous drug therapy, Nose Diseases parasitology
- Abstract
Mucocutaneous leishmaniasis of the nose: a case report. Leishmaniasis is a parasitic infection that is rarely seen in Belgium. The majority of new diagnoses are seen in patients living in or visiting endemic regions, which are mostly developing countries. Here we describe the case of a 60-year-old male patient who was referred to an ENT specialist because of an erythematous swelling of the left side of the nose tip, which had persisted for 3 months. Biopsies showed the presence of leishmaniasis. This case report alerts ENT physicians that leishmaniasis is part of the differential diagnosis in patients who present with an uncommon persistent lesion in the head and neck region and who have travelled to endemic regions or are immunodeficient.
- Published
- 2015
31. Epidemiology of ENT emergencies.
- Author
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Lammens F, Lemkens N, Laureyns G, Lemmens W, Van Camp L, and Lemkens P
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Child, Child, Preschool, Emergencies epidemiology, Female, Humans, Infant, Male, Middle Aged, Retrospective Studies, Young Adult, Otorhinolaryngologic Diseases epidemiology
- Abstract
Objective: To give an overview of ear, nose, and throat (ENT) pathologies encountered in the emergency room (ER)., Methods: Retrospective analysis of 1296 files of patients visiting the ER between January 2008 and December 2012. Diagnosis, treatment, hospitalisation, referral, and demographic parameters were evaluated., Results: Epistaxis is the most frequent ENT condition seen in the ER. One third of epistaxis patients are on anticoagulant therapy. The second most frequent conditions observed were infections of the pharynx and tonsils. Nasal fractures and vertigo were also frequently observed., Conclusion: Epistaxis and its treatment were the most frequent ENT diagnosis and therapy seen in the ER. Infections are the main cause of hospitalisation. Referral to other disciplines and revisits seldom occurred.
- Published
- 2014
32. ENT one day surgery: critical analysis with the HFMEA method.
- Author
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Marquet K, Claes N, Postelmans T, Lemkens P, Rosseel M, Torfs A, and Vleugels A
- Subjects
- Belgium, Humans, Otorhinolaryngologic Surgical Procedures methods, Process Assessment, Health Care, Prospective Studies, Ambulatory Surgical Procedures standards, Otorhinolaryngologic Surgical Procedures standards, Patient Safety standards, Quality Improvement, Safety Management methods
- Abstract
Objectives: Research shows that 51.4% of adverse events in hospitals occur in surgery and that 3-22% of surgical patients experience adverse events. The risk may be even higher when turnover is high and when patients are children, as is often the case in ear, nose and throat surgery. This quality project therefore started in response to requests from physicians in two hospitals in the Flemish part of Belgium. The aim of this study is to use the Healthcare Failure Mode & Effect Analysis method to evaluate the process flow for ear, nose and throat patients, and to redesign the process to enhance patient safety., Methodology: In two One Day Clinics, processes were prospectively analysed using the Healthcare Failure Mode & Effect Analysis method., Results: Similar potential failures were reported in both hospitals. The major failure mode was linked to the absence of an active identity check throughout the process. The process was therefore redesigned by implementing a surgical safety checklist and an active identity check protocol. Although the Healthcare Failure Mode & Effect Analysis is a time-consuming method, this systematic approach by a multidisciplinary team has been found to be useful in detecting failure modes that need immediate safety responses. The involvement of all disciplines and an open safety culture during the procedure were the most important conditions., Conclusions: The Healthcare Failure Mode & Effect Analysis is a useful instrument for detecting the failure modes in this care process.
- Published
- 2013
33. Patient reported outcome measures (PROMs) in children with sleep-disordered breathing undergoing adenotonsillectomy.
- Author
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Bogaerts M, Schrooten W, Lemkens N, Indesteege F, Postelmans T, and Lemkens P
- Subjects
- Adenoidectomy, Adolescent, Child, Child, Preschool, Cohort Studies, Feasibility Studies, Female, Humans, Male, Prospective Studies, Surveys and Questionnaires, Tonsillectomy, Treatment Outcome, Health Status, Quality of Life, Sleep Apnea, Obstructive surgery
- Abstract
Objectives: Patient reported outcome measures (PROMs) asses the health status or health related quality of life from the patient's perspective. The aims of this study were to assess the effect of adenotonsillectomy on symptoms and daily functioning in children with sleep-disordered breathing (SDB) using an electronic questionnaire, and to determine if this is a feasible method to evaluate treatment outcome in this patient population., Methods: The electronic questionnaire was administered to the parents of children undergoing adenotonsillectomy for SDB on the day of surgery (T0), and two weeks (T1) and six months (T2) after surgery. The questionnaire scored symptoms in 5 different fields (snoring, sleepiness, behaviour, appetite, and apnoea). Higher scores indicated more pronounced symptoms. The score on T0 measured the preoperative symptoms. The main outcome measure (the change in scores between the postoperative measurements and the preoperative measurement) was analysed using the Wilcoxon signed-rank test., Results: Eighty-eight percent of invited patients participated in the study. Six percent had no access to internet, and another 6% did not wish to participate. Language problems were not reported. Response rates for T1 and T2 were 82.6% and 79.7% respectively. The T1 and T2 scores were significantly lower than the scores on T0 for snoring, behaviour, apnoea, and sleepiness. The T2 appetite score was significantly higher than on T0, which indicates an improvement of appetite., Conclusion: A comparison of pre- and postoperative results from an electronic disease-specific questionnaire indicated significantly improved symptoms and daily functioning in children undergoing adenotonsillectomy for SDB. High participation and response rates indicated it was feasible to assess treatment outcome by means of an electronic questionnaire.
- Published
- 2013
34. Tongue and cheek metastases as the first clinical sign of a primary cancer.
- Author
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Menten K, Janssen M, Drieskens O, and Lemkens P
- Subjects
- Aged, Cheek, Diagnosis, Differential, Humans, Male, Mouth Neoplasms secondary, Adenocarcinoma secondary, Neoplasms, Unknown Primary, Tongue Neoplasms secondary
- Abstract
Metastases to the oral cavity are rare and are most frequently seen in the jawbones. Soft tissue metastases as the first clinical sign of a metastatic cancer are quite exceptional. In this case report, we describe the history of a 67-year old patient presenting with painless oral lesions for 4 weeks. Biopsies showed metastases of an adenocarcinoma that was not yet identified. This case report highlights that an ENT physician should consider metastases to the oral cavity as part of the differential diagnosis in every patient with an uncommon, persistent oral lesion with unclear origin.
- Published
- 2013
35. Impaired flow-induced arterial remodeling in DOCA-salt hypertensive rats.
- Author
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Lemkens P, Nelissen J, Meens MJ, Fazzi GE, Janssen GJ, Debets JJ, Janssen BJ, Schiffers PM, and De Mey JG
- Subjects
- Animals, Aspartic Acid Endopeptidases antagonists & inhibitors, Aspartic Acid Endopeptidases drug effects, Benzazepines pharmacology, Blood Pressure drug effects, Cell Movement drug effects, Cell Movement physiology, Disease Models, Animal, Endothelin-Converting Enzymes, Enzyme Inhibitors pharmacology, Hypertension chemically induced, Hypertrophy chemically induced, Macrophages pathology, Metalloendopeptidases antagonists & inhibitors, Metalloendopeptidases drug effects, Monocytes pathology, Neprilysin antagonists & inhibitors, Neprilysin drug effects, Rats, Rats, Wistar, Regional Blood Flow drug effects, Vascular Resistance drug effects, Vascular Resistance physiology, Blood Pressure physiology, Desoxycorticosterone adverse effects, Hypertension pathology, Hypertension physiopathology, Mesenteric Arteries pathology, Mesenteric Arteries physiopathology, Regional Blood Flow physiology
- Abstract
Arteries from young healthy animals respond to chronic changes in blood flow and blood pressure by structural remodeling. We tested whether the ability to respond to decreased (-90%) or increased (+100%) blood flow is impaired during the development of deoxycorticosterone acetate (DOCA)-salt hypertension in rats, a model for an upregulated endothelin-1 system. Mesenteric small arteries (MrA) were exposed to low blood flow (LF) or high blood flow (HF) for 4 or 7 weeks. The bioavailability of vasoactive peptides was modified by chronic treatment of the rats with the dual neutral endopeptidase (NEP)/endothelin-converting enzyme (ECE) inhibitor SOL1. After 3 or 6 weeks of hypertension, the MrA showed hypertrophic arterial remodeling (3 weeks: media cross-sectional area (mCSA): 10±1 × 10(3) to 17±2 × 10(3) μm(2); 6 weeks: 13±2 × 10(3) to 24±3 × 10(3) μm(2)). After 3, but not 6, weeks of hypertension, the arterial diameter was increased (Ø: 385±13 to 463±14 μm). SOL1 reduced hypertrophy after 3 weeks of hypertension (mCSA: 6 × 10(3)±1 × 10(3) μm(2)). The diameter of the HF arteries of normotensive rats increased (Ø: 463±22 μm) but no expansion occurred in the HF arteries of hypertensive rats (Ø: 471±16 μm). MrA from SOL1-treated hypertensive rats did show a significant diameter increase (Ø: 419±13 to 475±16 μm). Arteries exposed to LF showed inward remodeling in normotensive and hypertensive rats (mean Ø between 235 and 290 μm), and infiltration of monocyte/macrophages. SOL1 treatment did not affect the arterial diameter of LF arteries but reduced the infiltration of monocyte/macrophages. We show for the first time that flow-induced remodeling is impaired during the development of DOCA-salt hypertension and that this can be prevented by chronic NEP/ECE inhibition.
- Published
- 2012
- Full Text
- View/download PDF
36. Dual neural endopeptidase/endothelin-converting [corrected] enzyme inhibition improves endothelial function in mesenteric resistance arteries of young spontaneously hypertensive rats.
- Author
-
Lemkens P, Nelissen J, Meens MJ, Janssen BJ, Schiffers PM, and De Mey JG
- Subjects
- Animals, Hypertension enzymology, Hypertension physiopathology, Rats, Rats, Inbred SHR, Rats, Inbred WKY, Angiotensin-Converting Enzyme Inhibitors pharmacology, Endothelium, Vascular physiology, Mesenteric Arteries physiopathology, Peptide Hydrolases drug effects, Protease Inhibitors pharmacology
- Abstract
Background: Endothelin-1 (ET1) is a potent vasoconstrictor peptide with pro-mitogenic and pro-inflammatory properties and is therefore of interest in the development of endothelial dysfunction, endothelium-dependent flow-related remodeling, and hypertension-related remodeling. ET1 can be formed through cleavage of big ET1 by endothelin-converting enzyme (ECE) and neutral endopeptidase (NEP)., Method: We investigated whether the dual NEP/ECE inhibitor SOL1 improves resistance artery function and structure in 12 weeks old spontaneously hypertensive rats (SHRs) and whether arterial structural responses to decreased (-90%) or increased (+100%) blood flow are impaired in young SHRs. To this end two groups of SHRs received chronic 4-week treatment at two different time points (4-8 and 8-12 weeks) prior to the experiment. We compared in-vitro effects of cyclo-oxygenase inhibition (1 μmol/l indomethacine), nitric oxide synthase inhibition (100 μmol/l N(ω)-L-nitro arginine methyl ester), and stimulation of the endothelium by 0.001-10 μmol/l acetylcholine (ACh) in isolated third-order mesenteric arteries of SHRs and aged-matched Wistar-Kyoto (WKY) rats., Results: SOL1 had no effect on blood pressure in SHRs or WKY rats. ACh caused biphasic effects in mesenteric arteries of SHRs. The contractile component (endothelium-derived contractile factor) was absent in WKY and abolished by acute indomethacin administration or chronic SOL1 treatment. Endothelium-derived nitric oxide-type responses did not differ in both strains and were not influenced by SOL1 treatment. Endothelium-derived hyperpolarizing factor-type responses were severely impaired in SHRs as compared to WKY rats and were normalized by chronic SOL1 treatment. In first-order mesenteric arteries, outward flow-induced remodeling was impaired in SHRs. Chronic SOL1 treatment did not restore this response., Conclusion: Thus chronic SOL1 treatment during the development of hypertension in SHRs has no effect on blood pressure but improves several aspects of endothelium-dependent vasomotor responses but not arterial remodeling.
- Published
- 2012
- Full Text
- View/download PDF
37. Outpatient hemithyroidectomy: safety and feasibility.
- Author
-
Torfs A, Laureyns G, and Lemkens P
- Subjects
- Adult, Aged, Ambulatory Surgical Procedures, Feasibility Studies, Female, Humans, Hypertrophy, Male, Middle Aged, Thyroid Gland pathology, Thyroid Nodule surgery, Thyroidectomy methods
- Abstract
Objective: In Belgium, thyroidectomy is currently an inpatient procedure because of potential life-threatening post-operative complications that include hypocalcemia, laryngeal nerve damage and haemorrhage. Thyroidectomy can only be performed on an outpatient basis if the complication rate is low. The purpose of this study was to determine the feasibility and safety of outpatient hemithyroidectomy., Methodology: Between March 2008 and September 2010 we selected 54 patients who met our inclusion criteria for outpatient hemithyroidectomy. The procedure was carried out through a standard cervicotomy under general anaesthesia. No drains were used. We analysed patient outcome based on complications, unplanned admissions and readmissions., Results: The mean age of the 54 patients was 46 years, and most of them were women (81%). The mean duration of surgery was 64 minutes, and there were no intra-operative complications. After an observation period of at least 3 hours, 44 patients (81.5%) were discharged as planned. Ten patients (18.5%) required admission for urine retention (n = 1), social circumstances (n = 1), persistence of nausea (n = 3), delayed anaesthesia recovery (n = 4) and patient preference (n = 1). All 10 were discharged the next day, and none were readmitted., Conclusions: Our study shows that outpatient hemithyroidectomy performed by experienced surgeons in carefully selected patients can be safe and is associated with a low complication rate. However, this series is small and larger studies are needed to confirm the results.
- Published
- 2012
38. Specific medical and surgical treatment for chronic inflammatory diseases in children.
- Author
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Boudewyns A, Antunes J, Bernheim N, Claes J, De Dooy J, De Leenheer E, De Roeck K, Hellings P, de Varebeke SJ, Jorissen M, Ketelslagers K, Lemkens N, Lemkens P, Leupe P, Malfroot A, Maris M, Michiels E, Van Crombrugge L, Vandenplas Y, Verhulst S, Eloy P, and Watelet JB
- Subjects
- Child, Chronic Disease, Humans, Inflammation therapy, Otorhinolaryngologic Diseases therapy, Otorhinolaryngologic Surgical Procedures methods, Practice Guidelines as Topic, Vaccination methods
- Abstract
Treatment for chronic inflammatory conditions in children should take into account the specific pathophysiological and clinical processes underlying these disorders. These guidelines provide a framework for both the medical and surgical treatment of chronic inflammatory diseases such as otitis media, allergic rhinitis and chronic rhinosinusitis, chronic inflammation of tonsils and adenoids, and laryngitis. In addition, the role of vaccinations and immunomodulatory therapies is discussed. Whenever possible, the evidence levels for specific treatments comply with the Oxford Levels of Evidence.
- Published
- 2012
39. Physiology of the mouth and pharynx, Waldeyer's ring, taste and smell.
- Author
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Bogaerts M, Deggoujf N, Huart C, Hupin C, Laureyns G, Lemkens P, Rombaux P, Ten Bosch Jv, and Gordts F
- Subjects
- Deglutition physiology, Humans, Mouth physiology, Pharynx physiology, Smell physiology, Taste physiology
- Abstract
This paper reviews the contribution of the different parts of the oral cavity and the pharynx to the basic physiology of breathing, phonation, speech, swallowing, and of Waldeyer's ring to the functioning of the immune system. We discuss the development of taste and smell, as well as possibilities for chemosensory testing in children.
- Published
- 2012
40. Clinical aspects of chronic ENT inflammation in children.
- Author
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Mansbach AL, Brihaye P, Casimir G, Dhooghe I, Gordts F, Halewyck S, Hanssens L, Lemkens N, Lemkens P, Leupe P, Mulier S, Van Crombrugge L, Van Der Veken P, and Van Hoecke H
- Subjects
- Child, Chronic Disease, Global Health, Humans, Morbidity trends, Risk Factors, Immunity, Innate immunology, Inflammation epidemiology, Inflammation etiology, Inflammation immunology, Otorhinolaryngologic Diseases epidemiology, Otorhinolaryngologic Diseases etiology, Otorhinolaryngologic Diseases immunology
- Abstract
In children, all ENT cavities are particularly prone to the development of chronic inflammation. This is due to many predisposing factors, of which the most common are unfavourable anatomy, absence of nasal blowing, day care attendance, allergy, immature immunity, gastro-oesophageal reflux and tobacco smoke exposure. The aim of this paper is to outline the most specific paediatric clinical aspects of chronic pharyngo-tonsillitis, rhinosinusitis, otitis media, adenoiditis and laryngotracheitis and the important influence that some of these pathologies exert on the others.
- Published
- 2012
41. ETA-receptor antagonists or allosteric modulators?
- Author
-
De Mey JG, Compeer MG, Lemkens P, and Meens MJ
- Subjects
- Allosteric Regulation, Animals, Cardiovascular Diseases physiopathology, Chronic Disease, Endothelin A Receptor Antagonists, Humans, Models, Biological, Neoplasms physiopathology, Protein Binding physiology, Rats, Structure-Activity Relationship, Calcitonin Gene-Related Peptide metabolism, Endothelins metabolism, Pain physiopathology, Receptor, Endothelin A agonists, Receptor, Endothelin A metabolism, Vasodilator Agents metabolism
- Abstract
The paracrine signaling peptide endothelin-1 (ET1) is involved in cardiovascular diseases, cancer and chronic pain. It acts on class A G-protein-coupled receptors (GPCRs) but displays atypical pharmacology. It binds tightly to ET receptor type A (ET(A)) and causes long-lasting effects. In resistance arteries, the long-lasting contractile effects can only be partly and reversibly relaxed by low-molecular-weight ET(A) antagonists (ERAs). However, the neuropeptide calcitonin-gene-related peptide selectively terminates binding of ET1 to ET(A). We propose that ET1 binds polyvalently to ET(A) and that ERAs and the physiological antagonist allosterically reduce ET(A) functions. Combining the two-state model and the two-domain model of GPCR function and considering receptor activation beyond agonist binding might lead to better anti-endothelinergic drugs. Future studies could lead to compounds that discriminate between ET(A)-mediated effects of the endogenous isopeptides ET1, ET2 and ET3 and that become more effective when the activity of the endogenous endothelin system is elevated., (Copyright © 2011 Elsevier Ltd. All rights reserved.)
- Published
- 2011
- Full Text
- View/download PDF
42. Alice in Wonderland syndrome and upper airway obstruction in infectious mononucleosis.
- Author
-
Piessens P, Indesteege F, and Lemkens P
- Subjects
- Child, Color Perception, Conscious Sedation adverse effects, Humans, Intubation, Intratracheal, Male, Syndrome, Tonsillectomy, Airway Obstruction etiology, Infectious Mononucleosis complications, Perceptual Disorders etiology
- Abstract
The Alice in Wonderland syndrome is a rare clinical feature characterised by perceptual disturbances including visual disturbances and distortion of the body image. This uncommon--but often easy to recognise--syndrome, to which children seem particularly susceptible, can be defined in patients with Epstein Barr Virus (EBV) infection. This report describes a 10-year-old child with a mild upper airway obstruction and manifestations of the Alice in Wonderland syndrome resulting from an acute EBV infection. Because meningo-encephalitis was considered in the differential diagnosis, an MRI examination was performed under midazolam sedation, leading to a severe life-threatening upper airway obstruction.
- Published
- 2011
43. Current Belgian adenotonsillectomy practice: a survey among Belgian ENT specialists.
- Author
-
Jacobs K, Jorissen M, and Lemkens P
- Subjects
- Belgium, Child, Humans, Otolaryngology, Patient Selection, Practice Patterns, Physicians', Tonsillitis surgery, Adenoidectomy statistics & numerical data, Tonsillectomy statistics & numerical data
- Abstract
Objectives: Tonsillectomies and adenotonsillectomies (TE and ATE) are among the most frequently performed operations in the western world. Despite the lack of generally accepted clinical guidelines about indications, the beneficial role of the procedure has been established. The aim of this study was to identify current practice relating to indications for tonsillectomies and adenotonsillectomies among Belgian ENT specialists., Methods: An anonymous questionnaire was sent to all Belgian ENT specialists. Part I of the questionnaire included questions about the ENT specialist himself/herself and his/her practice. Part II comprised questions about indications for TE/ATE in children up to 16 years of age. Part III included questions about indications in adults., Results: 238 out of 528 questionnaires were completed and returned. The majority of physicians consider TE/ATE to be indicated if a child or an adult suffers 3 or 4 tonsillitis episodes per year. The decision to operate on children for upper airway obstruction is mainly based on clinical and anamnestic findings. A peritonsillar abscess is usually considered to be an indication for surgery. We compared the results between different groups of ENT specialists and could detect differences in decision-making only according to the number of years of ENT practice. The stringency of surgeons' indications decreases with increasing surgeon age., Conclusions: The majority of respondents consider tonsillectomies/adenotonsillectomies to be indicated after 3 to 4 episodes of tonsillitis per year. In the case of upper airway obstruction in children, surgical indications are mainly based on clinical and anamnestic findings. Surgical decision-making appears to be influenced by the number of years of ENT practice.
- Published
- 2010
44. Antibiotic use and doctor visits are reduced after adenotonsillectomy.
- Author
-
Lemkens N, Lemkens P, Egondi TW, Schrooten W, Jorissen M, Mertens R, de Raeve G, Preal R, and Debruyne F
- Subjects
- Adolescent, Belgium, Child, Child, Preschool, Drug Utilization, Female, Humans, Infant, Male, Postoperative Period, Tonsillitis surgery, Adenoidectomy, Anti-Bacterial Agents therapeutic use, Office Visits statistics & numerical data, Practice Patterns, Physicians' statistics & numerical data, Tonsillectomy
- Abstract
Objective: A tonsillectomy, with or without an adenotomy ((A)TE), is a common surgical procedure in children. The most important indications are recurrent tonsillitis and upper airway obstruction secondary to adenotonsillar hypertrophy. The aim of this study was to investigate whether the current (A)TE practice in Belgium reduced the need for medical care., Study Design and Methods: The database of the Christelijke Mutualiteit, one of the most important health insurance organizations in Belgium, provided data on approximately 11,000 (A)TE's in children aged 0 to 15 years, performed by different ENT-specialists from Jan 1st 2002 to Sept 30th 2003. We compared the use of antibiotics during the 12 months before and the 12 months after (A)TE. We also compared the number of visits to pediatricians and general practitioners during the 12 months before and the 12 months after surgery., Results: The median antibiotic use dropped from 4 boxes in the year before the operation to 1 box in the year after the operation. The median number of doctor visits also dropped from 7 visits in the year before to 4 visits in the year after (A)TE., Conclusion: Although there are no generally accepted guidelines on the indications for (A)TE in Belgium, the current practice effectively reduced the need for medical care.
- Published
- 2010
45. Routine pathological evaluation after tonsillectomy: is it necessary?
- Author
-
Dewil B, Jorissen M, and Lemkens P
- Subjects
- Adolescent, Adult, Age Distribution, Aged, Aged, 80 and over, Belgium epidemiology, Child, Child, Preschool, Female, Follow-Up Studies, Humans, Incidence, Infant, Male, Middle Aged, Retrospective Studies, Risk Factors, Tonsillar Neoplasms epidemiology, Postoperative Care methods, Tonsillar Neoplasms pathology, Tonsillectomy
- Abstract
Objectives: There is still no consensus regarding the necessity of sending every tonsil specimen for histological examination following tonsillectomy. To add to this discussion, we assessed the incidence of preoperatively unexpected malignancy in the postoperative tonsil specimens of adults and children in our ENT department., Methods: We conducted a retrospective study of the histopathology results of all patients who underwent tonsillectomy between January 1999 and February 2006 in the ENT department of East Limburg Hospital in Genk. The charts of patients with postoperative histopathological malignancy were further analysed and reviewed for preoperative indications of the tonsillectomy and for preoperative suspicion of malignancy., Results: A total of 2989 patients were included in the study: 2058 children (defined as 16 years or younger) and 931 adults. No malignancy was found among the children. In 20 adults, malignancy was diagnosed, but in all cases there was a preoperative suspicion of malignancy. No patient without preoperative risk factors was found to have malignancy on pathological evaluation of the tonsils., Conclusion: Our results indicate that routine histopathological examination of tonsils removed for benign disease in adults and children is clinically unnecessary. We propose that on an individual basis, the surgeon should decide the need for histological examination depending on preoperative risk factors and peroperative gross examination. Such a strategy will only be medicolegally possible where there are national and scientifically (evidence)based ENT consensus reports or guidelines on this issue.
- Published
- 2006
46. Tonsillectomy as a day-case surgery: a safe procedure?
- Author
-
Laureyns G, Lemkens P, and Jorissen M
- Subjects
- Adolescent, Adult, Child, Child, Preschool, Humans, Length of Stay, Retrospective Studies, Time Factors, Tonsillectomy standards, Treatment Outcome, Day Care, Medical, Pharyngeal Diseases surgery, Tonsillectomy methods
- Abstract
Unlabelled: PROBLEM/OBJECTIVES: To assess the safety of tonsillectomy as a one-day procedure, we retrospectively evaluated complications of tonsillectomy within two weeks after surgery., Methodology: The study included 1977 patients; 85% of the tonsillectomies were performed as a one-day procedure. Tonsillectomies were performed in Ziekenhuis Oost Limburg by one staff ENT and seven ENT residents between January 1, 1996 and January 1, 2005. We also reviewed the number of tonsillectomies performed as day surgery and their complication rate for Belgium, based on the National Office for Health and Disability Insurance billing, comparing our series with the number of tonsillectomies as day-case surgeries and their complication rate for Belgium., Results: In our study, 26 patients (1.3%) consulted within two weeks of surgery for major or minor complications secondary to tonsillectomy. The only major complication was primary bleeding (bleeding within 24 hours after tonsillectomy), which occurred in five patients, all of whom received a revision for haemostasis. No patient required transfusion. Minor complications (21 patients) were secondary bleeding, fever, and anorexia. During the study period, there were 214,524 tonsillectomies performed in Belgium. Based on invoice information, 4676 cases of postoperative bleeding occurred, requiring a revision for haemostasis. In our centre and generally for Belgium, there was an increase in tonsillectomies as an outpatient procedure without an increase in incidence of subsequent bleeding. Day-case surgery tonsillectomy incidence had risen from 36% in 1996 to 64% in 2004 in Belgium., Conclusion: Considering the low bleeding and complication rates, tonsillectomy can safely be performed as a day-case surgery.
- Published
- 2006
47. Bilateral simultaneous facial paralysis--differential diagnosis and treatment options. A case report and review of literature.
- Author
-
Gevers G and Lemkens P
- Subjects
- Adult, Diagnosis, Differential, Facial Injuries diagnosis, Facial Neoplasms diagnosis, Facial Paralysis classification, Female, Guillain-Barre Syndrome diagnosis, Herpes Zoster Oticus diagnosis, Humans, Infections diagnosis, Metabolic Diseases diagnosis, Sarcoidosis diagnosis, Facial Paralysis etiology, Facial Paralysis therapy
- Abstract
Bilateral facial paralysis or paresis of peripheral origin is a rare condition and therefore represents a diagnostic challenge. We here present a case of a previously healthy woman who was hospitalized for symptoms of meningitis. On the second day of her hospital stay, she developed bilateral facial paresis. Later, the patient developed also tachycardia and dysrhythmias. A thorough diagnostic procedure including lumbar puncture, routine blood investigation with serological tests, MRI of the brain, Holter monitoring and transoesophageal echocardiographia, revealed meningitis with radiculitis, facial paresis and myocarditis. The clinical triad of meningitis, radiculitis and facial palsy is known as the Bannwarth Syndrome (Lyme disease). The patient was treated with ceftriaxone and recovered well. Despite repeatedly taken serological tests, Borrelia burgdorferi immunoglobulins were not detected. Acquired bilateral facial paralysis can occur in several diseases of infectious, neurological, idiopathic, iatrogenic, toxic, neoplastic or traumatic origin. In this article, we review the differential diagnoses and treatment options of bilateral facial paresis and present a scheme that is helpful in the diagnostic evaluation of this condition.
- Published
- 2003
48. Septal suturing following nasal septoplasty, a valid alternative for nasal packing?
- Author
-
Lemmens W and Lemkens P
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Female, Hemostasis, Surgical methods, Humans, Male, Middle Aged, Retrospective Studies, Tampons, Surgical, Nasal Septum surgery, Rhinoplasty methods, Sutures
- Abstract
Septal suturing following nasal septoplasty, a valid alternative for nasal packing? After septal surgery most surgeons still routinely perform nasal packing since this is generally recommended. The aims of packing are numerous: haemostasis, prevention of haematoma, increase septal flap apposition, closure of dead space and prevention of displacement of the replaced cartilage. However, nasal packing is not an innocuous procedure and may lead to cardiovascular changes, continued bleeding, nasal injury, hypoxia, foreign body reaction or infection. The major disadvantage of nasal packing is patient discomfort--usually necessitating hospital stay--and the need to administer antibiotics. Therefore alternatives were sought. Sessions, Lee and Vukovic conceived and reported in the eighties forms of continuous septal suturing, but are not widely used. A similar technique of septal suturing after nasal septoplasty without nasal packing was used in 226 consecutive surgical procedures and reviewed retrospectively. Complications like postoperative episodes of bleeding, infections, septal haematomas, septal perforations or synechia were not noted. On one patient a recurrence of the septal deviation occurred. Patients reported almost no discomfort. Moreover, the septal surgery procedure could be carried out on a day-surgery basis. Readmission of a patient was never necessary. Based on these observations the septal suturing technique is a valid alternative to intranasal packing following septal surgery.
- Published
- 2001
49. [Incidence of postoperative complications in the radiotherapy of laryngeal and hypopharyngeal tumors].
- Author
-
van den Bogaert W, van der Schueren E, Ostyn F, and Lemkens P
- Subjects
- Belgium, Carotid Artery Injuries, Female, Humans, Laryngeal Neoplasms radiotherapy, Male, Neoplasm Recurrence, Local, Pharyngeal Neoplasms radiotherapy, Radiation Dosage, Rupture, Laryngeal Neoplasms surgery, Pharyngeal Neoplasms surgery, Postoperative Complications epidemiology
- Published
- 1983
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