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See detailIntramolecular dynamics by photoelectron spectroscopy. III.Predissociation of the B 2B2 state of H2O+ and D2O+ by a semiclassical approach
Dehareng, Dominique ULg

in Chemical Physics (1986), 110

The initial wave packets and H2O+ and D2O+ in their B 2B2 /2A' states are expanded in the frozen gaussian basis set proposed by Heller. The gaussian functions are propagated on the adiabatic and diabatic ... [more ▼]

The initial wave packets and H2O+ and D2O+ in their B 2B2 /2A' states are expanded in the frozen gaussian basis set proposed by Heller. The gaussian functions are propagated on the adiabatic and diabatic potential energy surfaces resulting from the conical intersection with the A 2A1/2A' states. Autocorrelation functions are calculated separately for the adiabatic and the diabatic motions of the nuclei. These autocorrelation functions are compared with their experimental counterparts. The agreement is qualitatively good and the isotope effects are well accounted for. [less ▲]

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See detailIntramolecular Dynamics of Molecular Ions.
Lorquet, Jean-Claude ULg; Lorquet, Andrée ULg; Dehareng, Dominique ULg et al

in Bulletin de la Société Chimique Belge (1983), 92(6/7), 609-611

The Fourier transform of an electronic spectrum gives a direct dynamic information on the nuclear motion of a wavepacket on the potential energy surface of the final state reached in the electronic ... [more ▼]

The Fourier transform of an electronic spectrum gives a direct dynamic information on the nuclear motion of a wavepacket on the potential energy surface of the final state reached in the electronic transition, at least during the first few molecular vibrations. The method is valid for both adiabatic and non-adiabatic situations. It has proved its usefulness in the study of molecular processes such as Duchinsky effect, fast predissociations and internal conversions. [less ▲]

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See detailIntramolecular excited-state processes of a halato-telechelic polymer, evaluated by global compartmental analysis of the fluorescence decay surface with the use of model coumpounds
van Stam, Jan; De Schryver, Frans C; Boens, Noël et al

in Macromolecules (1997), 30(19), 5582-5590

The excited-state processes of the halato-telechelic polymer bis[(N,N-dimethyl-N-[3-(1-pyrenyl)propyl]ammonio)trifluoromethanesulfonate]-end-capped poly(tetrahydrofuran) at low concentrations are ... [more ▼]

The excited-state processes of the halato-telechelic polymer bis[(N,N-dimethyl-N-[3-(1-pyrenyl)propyl]ammonio)trifluoromethanesulfonate]-end-capped poly(tetrahydrofuran) at low concentrations are investigated by time-resolved fluorescence. The photophysical processes can be described by an intramolecular three-state excited-state model. Such a system is not identifiable in the absence of a priori information. It is possible to perform a global compartmental analysis of the fluorescence decay surface using the scanning technique, based on model compound data previously obtained [Hermans et al., J. Phys. Chem. 1994, 98, 13583 and Hermans et al. Macromolecules 1995, 28, 3380]. The value boundaries on the rate constant for ring closure of the chain ends show that this process is close to diffusion-controlled. [less ▲]

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See detailIntramyocardial synthesis of pro- and anti-inflammatory cytokines in infants with congenital cardiac defects.
Qing, Ma; Schumacher, Kathrin; Heise, Ruth et al

in Journal of the American College of Cardiology (2003), 41(12), 2266-74

OBJECTIVES: We sought to test the hypothesis that cytokines would be expressed in the myocardium of infants with congenital cardiac defects and to identify the signaling pathways involved. BACKGROUND ... [more ▼]

OBJECTIVES: We sought to test the hypothesis that cytokines would be expressed in the myocardium of infants with congenital cardiac defects and to identify the signaling pathways involved. BACKGROUND: Mechanical stress upregulates pro-inflammatory cytokines in the myocardium. METHODS: Fifteen infants with tetralogy of Fallot (TOF) (n = 7) or with ventricular septal defects (VSDs) (n = 8) were investigated. Concentrations of pro- and anti-inflammatory cytokines and of the inducible nitric oxide synthase (iNOS) were measured by enzyme-linked immunosorbent assay and/or Western blotting in the right ventricular myocardium taken during cardiac surgery. Activation of the nuclear factor-kappa-B (NF-kappa-B) and p38 mitogen-activated protein kinase (MAPK) pathways was assessed by electrophoretic mobility shift assay with supershift and/or Western blotting, respectively. RESULTS: The pro-inflammatory cytokines tumor necrosis factor (TNF)-alpha, interleukin (IL)-1-beta, and IL-6 and the anti-inflammatory cytokine IL-10 were detected in the myocardium of all patients. Concentrations of the pro-inflammatory cytokines and also of phosphorylated p38 MAPK were higher in patients with TOF than in those with VSD and correlated with the degree of pressure overload of the right ventricle. Levels of phosphorylated I-kappa-B-alpha, iNOS, and IL-10 were similar in patients with TOF and in those with VSD. CONCLUSIONS: Our results show intramyocardial synthesis of pro-inflammatory cytokines in infants with congenital cardiac defects. This is associated with activation of both the NF-kappa-B and p38 MAPK pathways. The latter could be particularly important for the transduction of mechanical signals in the infant's myocardium. Synthesis of IL-10 indicates an intramyocardial anti-inflammatory potential in this age group. [less ▲]

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See detailIntranasal infusion of enilconazole for treatment of sinonasal aspergillosis in dogs.
Zonderland, Jean-Luc; Stork, Christoph; Saunders, Jimmy et al

in Journal of the American Veterinary Medical Association [=JAVMA] (2002), 221

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See detailIntranasal oxytocin in obsessive-compulsive disorder
Ansseau, Marc ULg; Legros, Jean-Jacques ULg; Mormont, Christian ULg et al

in Psychoneuroendocrinology (1987), 12

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See detailIntranasal oxytocine as an adjunct to escitalopram in major depression.
Scantamburlo, Gabrielle ULg; Ansseau, Marc ULg; Geenen, Vincent ULg et al

in Journal of Neuropsychiatry and Clinical Neurosciences (The) (2011), 23(2), 5

Detailed reference viewed: 45 (17 ULg)
See detailIntransigeantisme, intégralisme et réformisme social. Structure et longue durée dans l'histoire du catholicisme contemporain (XIXe - XXe s.): réflexions historiographiques et méthodologiques
Jadoulle, Jean-Louis ULg

in G. BRAIVE et J.-M. CAUCHIES (Ed.) La critique historique à l'épreuve. Liber discipulorum Jacques Paquet (1989)

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See detailIntraocular Lens Adsorbome: a Proteomic Study of Adsorbed Proteins onto Acrylic Materials and Its Implication in Secondary Cataract
Huang, Yi-Shiang ULg; Bertrand, Virginie ULg; Mazzucchelli, Gabriel ULg et al

Poster (2012, September 17)

The intraocular lens (IOL) is a polymer implant designed to replace the natural lens after cataract surgery. When the implant is introduced into the lens capsule, the polymer starts to interact with the ... [more ▼]

The intraocular lens (IOL) is a polymer implant designed to replace the natural lens after cataract surgery. When the implant is introduced into the lens capsule, the polymer starts to interact with the aqueous humour and the exchange of molecules between the solid and the liquid begins. The nature of exchange in water, ions, and biomolecules may result in several postoperative complications including glistening, calcification, and posterior capsular opacification. The posterior capsular opacification (PCO, also called “Secondary Cataract”) is raised from the over-growth of residual lens epithelial cells. The first step of the over-growth process of the cells is their adhesion to the deposited biomolecules, such as proteins involved in extra-cellular matrices. The purpose of this study is to identify the principal proteins adsorbed onto the acrylic polymers by mass spectrometry. The concept of adsorbome is to generate a list of adsorbed proteins to the hydrophilic and hydrophobic polymers, and then compare the difference to the original component of aqueous humour in order to see the affinity of individual protein to each material. Two kinds of hydrophilic and two kinds of hydrophobic acrylic polymers were tested for their adsorbomes by treating them with an aqueous humour analogue and the major adsorbed proteins were identified by mass spectrometry. Interestingly, the hydrophilic acrylic polymer shows a relative lower protein adsorption rate but shows a higher incidence of secondary cataract. This phenomenon implies the adsorbed proteins play a crucial role in progress of secondary cataract. [less ▲]

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See detailIntraocular lenses with functionalized surfaces by biomolecules in relation with lens epithelial cell adhesion
Huang, Yi-Shiang ULg; Alexandre, Michaël ULg; Bozukova, Dimitriya et al

Poster (2013, April 25)

A cataract is pathology opacity of the lens or capsule of the eye, causing impairment of vision or even blindness. Surgery, with lens extraction and intraocular lens implantation, is still the only ... [more ▼]

A cataract is pathology opacity of the lens or capsule of the eye, causing impairment of vision or even blindness. Surgery, with lens extraction and intraocular lens implantation, is still the only currently available treatment. The most common complication after implantation of intraocular lenses (IOLs) is the posterior capsular opacification (PCO) or secondary cataract. This is the result of lens epithelial cells (LECs) proliferation and their transition to mesenchymal cells. In 1997, a Sandwich theory was proposed to elucidate the developmental process of PCO. [1] According to this model, an IOL with higher affinity to LECs will induce a less PCO. In our research, the pHEMA (Poly(2-hydroxyethyl methacrylate)) based acrylic hydrophilic polymer is subjected to the surface modification by conjugating with the bioactive peptides. The RGD sequence, known for its excellent biocompatibility, is designed to stimulate the biointegration between the LECs and the polymer implant. [2]. From our research, The RGD peptide immobilized onto pHEMA surfaces significantly facilitates the adhesion of the porcine LEC. The peptide immobilized surface retains its biological function even after 10 times of autoclave. On the other hand, the immobilized peptide does not alter the hydrophobicity of the surface, the light transmission, as well as the cytotoxicity of the material. This functionalized biomaterial would possibly prevent the formation of PCO. [1] J Cataract Refract Surg. 1997 Dec;23(10):1539-42 [2] Trends Biotechnol. 2008 Jul;26(7):382-92 [less ▲]

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See detailIntraocular Lenses with Functionalized Surfaces by Biomolecules in Relation with Lens Epithelial Cell Adhesion
Huang, Yi-Shiang ULg

Conference (2012, March 27)

A cataract is pathology opacity of the lens or capsule of the eye, causing impairment of vision or even blindness. In 1998, it was estimated that worldwide 19.4 million people were bilaterally blind from ... [more ▼]

A cataract is pathology opacity of the lens or capsule of the eye, causing impairment of vision or even blindness. In 1998, it was estimated that worldwide 19.4 million people were bilaterally blind from age-related cataract. Surgery, with lens extraction and intraocular lens implantation, is still the only currently available treatment. More than 1.3 million cataract operations were performed in the USA in 1998 at a cost of $3.5 billion. The most common complication after implantation of intraocular lenses (IOLs) is the posterior capsular opacification (PCO) or secondary cataract. This is the result of lens epithelial cells (LECs) proliferation and their transition to mesenchymal cells. In 1997, a Sandwich theory was proposed to elucidate the developmental process of PCO. According to this model, an IOL with higher affinity to LECs will induce a less PCO. In our research, the pHEMA (Poly(2-hydroxyethyl methacrylate)) based acrylic hydrophilic polymer is subjected to the surface modification by conjugating with the bioactive peptides. The RGD sequence, known for its excellent biocompatibility, is designed to stimulate the biointegration between the LECs and the polymer implant. Our research program will focus on the evaluation of the physical, mechanical and biological properties of the lens before and after peptide grafting. These diverse tests include contact angle measurements, Atomic Force Microscopy (AFM), x-ray photoelectron spectroscopy (XPS), FTIR/ATR, Scanning Electron Microscopy (SEM), and the MTS cytotoxicity assay. [less ▲]

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See detailIntraoperative brain image update based on biomechninical models
Vigneron, Lara M.; Robe, Pierre A.; Verly, Jacques ULg

Conference (2006)

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See detailIntraoperative cytokines production during orthotopic liver transplantation
Pirenne, J.; Noizat-Pirenne, F.; De Groote, D. et al

in Transplant International : Official Journal of the European Society for Organ Transplantation (1992), 5(Suppl 1), 631-635

In summary, we established that a significant production of the monokines interleukin-6, tumor necrosis factor apha, and interleukin-1 occurred during orthotopic liver transplantation whereas the ... [more ▼]

In summary, we established that a significant production of the monokines interleukin-6, tumor necrosis factor apha, and interleukin-1 occurred during orthotopic liver transplantation whereas the lymphokines interferon gamma and interleukin-2 were not detected. Levels of interleukin-6 reached their maximum values before and especially at the end of the anhepatic phase. They remained high after the anhepatic phase, i. e. after reperfusion of the new livers. Tumor necrosis factor alpha and interleukin-1 reached their maximum values after the anhepatic phase. Not only were interleukin-6, tumor necrosis factor alpha, and interleukin-1 present in the serum but they could also be detected in the bile produced by these new livers. Mechanisms of monokine production during orthotopic liver transplantation is multifactorial in origin and further studies will have to evaluate the relative contribution of the various factors involved. The possibility of an association between peroperative monokines and transplant outcome and their potential clinical implication will have to be elucidated. [less ▲]

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See detailIntraoperative electrical stimulation in awake craniotomy: methodological aspects of current practice.
Szelenyi, Andrea; Bello, Lorenzo; Duffau, Hugues et al

in Neurosurgical focus (2010), 28(2), 7

There is increasing evidence that the extent of tumor removal in low-grade glioma surgery is related to patient survival time. Thus, the goal of resecting the largest amount of tumor possible without ... [more ▼]

There is increasing evidence that the extent of tumor removal in low-grade glioma surgery is related to patient survival time. Thus, the goal of resecting the largest amount of tumor possible without leading to permanent neurological sequelae is a challenge for the neurosurgeon. Electrical stimulation of the brain to detect cortical and axonal areas involved in motor, language, and cognitive function and located within the tumor or along its boundaries has become an essential tool in combination with awake craniotomy. Based on a literature review, discussions within the European Low-Grade Glioma Group, and illustrative clinical experience, the authors of this paper provide an overview for neurosurgeons, neurophysiologists, linguists, and anesthesiologists as well as those new to the field about the stimulation techniques currently being used for mapping sensorimotor, language, and cognitive function in awake surgery for low-grade glioma. The paper is intended to help the understanding of these techniques and facilitate a comparison of results between users. [less ▲]

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See detailIntraoperative Localisation of the Primary Motor Cortex Using Single Electrical Stimuli
Maertens De Noordhout, Alain ULg; Born, J. D.; Hans, Pol ULg et al

in Journal of Neurology, Neurosurgery & Psychiatry (1996), 60(4), 442-4

A new method of intraoperative localisation of the primary motor cortex is described, based on the application of single anodal electric pulses to the brain surface. Patients were anaesthetised with ... [more ▼]

A new method of intraoperative localisation of the primary motor cortex is described, based on the application of single anodal electric pulses to the brain surface. Patients were anaesthetised with propofol infusion, and neuromuscular blockade was temporarily alleviated to allow recording of surface EMG responses (CMAPs) to the stimuli. Primary motor areas could be localised in 18/19 patients studied. In the other patient, no responses were elicited, as the operative field was posterior to the motor cortex. When compared with MEPs elicited in awake patients by magnetic stimuli, responses to intraoperative anodal stimulation were of small amplitude (usually less than 10% of MEPs) and their latency was some 1 to 2 ms longer. One month after the operation, only 1/19 patients was left with a slight muscle weakness, although seven showed preoperative motor deficit. The procedure proved easy and fast, needing no preliminary surgery or time consuming preparation. It did not induce any detectable side effects. [less ▲]

Detailed reference viewed: 3 (0 ULg)