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Peer Reviewed
See detailPit-1 gene HinfI RFLP and growth traits in double-muscled Belgian Blue cattle
Renaville, Robert ULg; Gengler, Nicolas ULg; Parmentier, Isabelle et al

in Journal of Animal Science (1997), 75(1), 146

Detailed reference viewed: 54 (1 ULg)
Peer Reviewed
See detailPit-1 gene polymorphism, milk yield, and conformation traits for Italian Holstein-Friesian bulls
Renaville, Robert ULg; Gengler, Nicolas ULg; Vrech, E. et al

in Journal of Dairy Science (1997), 80(12), 34313438

Detailed reference viewed: 32 (5 ULg)
Peer Reviewed
See detailPit-1 gene sequencing and mutation analysis in sheep
Bastos, Elena; Parmentier, Isabelle; Santos, I. et al

Poster (2001)

Detailed reference viewed: 24 (2 ULg)
Peer Reviewed
See detailPit-1 gene sequencing and mutation analysis in sheep
Bastos, E.; Parmentier, Isabelle; Santos, I. et al

in Journal of Animal Science (2001), 79(suppl 1), 339

Detailed reference viewed: 21 (0 ULg)
Full Text
Peer Reviewed
See detailPit-1 mediates cell-specific and cAMP-induced transcription of the tilapia GH gene
Sekkali, B.; Belayew, A.; Bortolussi, M. et al

in Molecular & Cellular Endocrinology (1999), 152(1-2), 111-23

Expression of the tilapia growth hormone (tiGH) gene is pituitary-specific and controlled by intracellular cAMP levels. DNaseI protection experiments allowed us to identify four Pit-1 binding sites in the ... [more ▼]

Expression of the tilapia growth hormone (tiGH) gene is pituitary-specific and controlled by intracellular cAMP levels. DNaseI protection experiments allowed us to identify four Pit-1 binding sites in the tiGH - 465/ + 19 region. Deletion and mutagenesis analysis revealed that the - 131/+ 19 region, containing two Pit-1 sites, or four copies of the most proximal site tiGHF1 fused to the heterologous Tk promoter, confer high level expression in rat pituitary cells and direct transcription in non-pituitary cells only after expression of rat Pit-1. We show that a tilapia pituitary factor specifically binds to site tiGHF1 and obtained a partial cDNA sequence coding for tilapia Pit-1. The cAMP stimulation is mediated by the proximal (- 131/- 31) promoter region. It is Pit-1-dependent and requires the tiGHF1 site. In addition, four copies of this site confer cAMP inducibility to the Tk promoter in GC cells. [less ▲]

Detailed reference viewed: 9 (1 ULg)
Peer Reviewed
See detailPit-1 polymorphism and milk production parameters in Italian Holstein-Friesian bulls.
Renaville, Robert ULg; Vrech, E.; Gengler, Nicolas ULg et al

in Journal of Animal Science (1996), 74(1), 111

Detailed reference viewed: 7 (1 ULg)
Peer Reviewed
See detailPit-1 polymorphisms and milk production parameters in italian-friesian bulls.
Parmentier, Isabelle; Gengler, Nicolas ULg; Mortiaux, Frédéric et al

in 3° Internat. Conf. farm Anim. Endocrinol. (1998)

Detailed reference viewed: 10 (0 ULg)
Peer Reviewed
See detailPit-1 polymorphisms and milk production parameters in Italian-Frisian bulls
Parmentier, isabelle; Gengler, Nicolas ULg; Mortiaux, Frédéric et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (1998), 2(special issue), 3

Detailed reference viewed: 11 (0 ULg)
Peer Reviewed
See detailPit-1, a candidate gene for MAS in dairy bulls.
Parmentier, Isabelle; Gengler, Nicolas ULg; Fontaine, Sandrine et al

Poster (2001, July)

Detailed reference viewed: 7 (1 ULg)
Peer Reviewed
See detailPIT-1, a candidate gene for mass assisted selection in dairy bulls.
Parmentier, Isabelle; Gengler, Nicolas ULg; Fontaine, S. et al

in Journal of Animal Science (2001), 79(Suppl 1, N°1412), 340

Detailed reference viewed: 20 (1 ULg)
Peer Reviewed
See detailPit-I and other somatotrope candidate genes to optimize selection for milk traits in bovine species: the 21 century's strategy.
Parmentier, Isabelle; Gillard, Nathalie; Abras, Sven et al

Poster (2003, February)

Detailed reference viewed: 9 (0 ULg)
Full Text
See detailPitch analysis workshop
Larrouy, Pauline ULg

Conference (2013, August 13)

Detailed reference viewed: 15 (7 ULg)
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Peer Reviewed
See detailPitch fluctuations in accurate and inaccurate singers: are they the same?
Larrouy, Pauline ULg; Pfordresher, Peter Q

Conference (2014, June 28)

The research presented here attempts to explore the fine-control of pitch during singing among accurate occasional singers and individuals whose singing reflects a Vocal Pitch Imitation Deficit (VPID ... [more ▼]

The research presented here attempts to explore the fine-control of pitch during singing among accurate occasional singers and individuals whose singing reflects a Vocal Pitch Imitation Deficit (VPID). Most past research addresses individual differences at the level of entire sung notes or melodies. By contrast, in the present research we addressed whether VPID singers differ from accurate singers with respect to the way to reach, maintain, and stop a sung tone. In order to describe the “scoops” at the beginning and ends of tone, as well as other forms of instability, we adapted the model of Large et al. (2002), originally designed to model entrainment of timing during synchronization. This model was applied to 1461 notes performed by 12 VPID and 17 accurate singers from the database of Pfordresher and Mantell (2014). Finally, the parameter values across the VPID and accurate singers were compared. The results showed that the model fits tones performed by accurate and VPID singers similarly well. As expected, the median pitch across the entire sung note deviated from the target to imitate for VPID singers; at the same time, the proportion of these deviations that were overshoots (“sharp”) versus undershoots (“flat”) were the same for VPID and accurate singers (2/3rd under and 1/3rd above). Thus accurate and VPID singers differ in the magnitude but not the type of overall deviation they exhibit. Whereas no difference occurred between the singers regarding the direction of the scoop (up or down) at the start and the end of the tone, the amplitude of the scoops was significantly different between VPID and accurate singers. The present study highlights the difficulty of VPID singers to reach and stop a sung tone, which supports the hypothesis of a fine motor control deficit in this population. Furthermore, the pitch fluctuations described by the model would have to be investigated in research on pitch accuracy perception. [less ▲]

Detailed reference viewed: 30 (1 ULg)
Peer Reviewed
See detailPitch matching, melodic singing, and vocal-motor control
Hutchins, Sean; Larrouy, Pauline ULg; Peretz, Isabelle

Conference (2013, August 08)

Poor singing ability can be caused by poor pitch perception or by poor vocal-motor control. Many prior studies have tried to examine this relationship, but one factor that often fails to be taken into ... [more ▼]

Poor singing ability can be caused by poor pitch perception or by poor vocal-motor control. Many prior studies have tried to examine this relationship, but one factor that often fails to be taken into account is the timbre of the target to be matched. Here, we compare accuracy in instrumental and vocal pitch matching paradigms, designed such that each participant’s own voice serves as both the target and the response. Participants (nonmusicians) matched their previously recorded voice on a slider, designed to play back their voice at different pitch levels depending on the location of a finger press on a continuous dimension. They also matched single pitches with their voice, and sang a familiar melody (“Happy Birthday”) for comparison to the single pitch matching tasks. The nonmusicians were significantly better at instrumental pitch matching than vocal pitch matching, indicating that vocal-motor control is an important limiting factor on singing ability. There were significant correlations between the melodic singing ability and vocal pitch matching, but not instrumental pitch matching. People with higher quality voices tended to be more accurate with pitch in melodies. These results demonstrate that single pitch matching tasks can be useful in measuring general singing abilities, and further confirm the importance of vocal-motor control in determining singing ability. [less ▲]

Detailed reference viewed: 59 (3 ULg)
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See detailPitted keratolysis: new ultrastructural insight in keratohyalin granule and corneodesmosome alterations.
Hermanns-Lê, Trinh ULg; Garcia, R.; Arrese Estrada, Jean-Marie ULg et al

in Exogenous Dermatology : Physical, Chemical, Biological (2004), 3

Background: Pitted keratolysis (PK) is a superficial cutaneous infection caused by different species of bacteria. It is characterized by discrete crateriform and malodorous pits and erosions coalescing to ... [more ▼]

Background: Pitted keratolysis (PK) is a superficial cutaneous infection caused by different species of bacteria. It is characterized by discrete crateriform and malodorous pits and erosions coalescing to form bizarre figures on the soles. Objective: To investigate the process of corneocyte shedding in PK. Method: Biopsies from typical lesions of three patients were investigated by transmission electron microscopy. Results: Microorganisms were found both inter- and intracellularly in corneocytes and keratinocytes of the upper layers of the stratum spinosum. Bacteria exhibited different morphologic aspects related to their localisation in the epidermis. Keratohyalin granules were strikingly abnormal, showing sharp segregation between rounded dense areas and more electron-translucent areas. Some keratohyalin granules exhibited only alveolar dense areas. These altered keratohyalin granules were still present inside corneocytes. The corneodesmosomes at the bottom of the pits were in part cleaved leading to partial corneocyte dissociation. Conclusion: It is suggested that proteases secreted by the bacteria alter the structure of both the corneodesmosomes and the keratohyalin granules. The latter appeared more resistant to the normal processing of profilaggrin inside the corneocytes. [less ▲]

Detailed reference viewed: 65 (1 ULg)
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Peer Reviewed
See detailPituicyte stellation is prevented by RhoA-or Cdc42-dependent actin polymerization.
Rosso, Lia; Pierson, Patricia M; Golfier, Claire et al

in Cellular & Molecular Neurobiology (2007), 27(6), 791-804

Our aim was to shed light on different steps leading from metabotropic receptor activation to changes in cell shape, such as those that characterize the morphological plasticity of neurohypophysial ... [more ▼]

Our aim was to shed light on different steps leading from metabotropic receptor activation to changes in cell shape, such as those that characterize the morphological plasticity of neurohypophysial astrocytes (pituicytes). Using explant cultures of adult rat pituicytes, we have previously established that adenosine A1 receptor activation induces stellation via inhibition of RhoA monomeric GTPase and subsequent disruption of actin stress fibers. Here, we rule out RhoA phosphorylation as a mechanism for that inhibition. Rather, our results are more consistent with involvement of a GTPase-activating protein (GAP). siRNA and pull-down experiments suggest that a step downstream of RhoA might involve Cdc42, another GTPase of the Rho family. However, RhoA activation, e.g., in the presence of serum, induces stress fibers, whereas direct Cdc42 activation appears to confine actin within a submembrane - i.e., cortical - network, which also prevents stellation. Therefore, we propose that RhoA may activate Cdc42 in parallel with an effector, such as p160Rho-kinase, that induces and maintains actin stress fibers in a dominant fashion. Rac1 is not involved in the stellation process per se but appears to induce a dendritogenic effect. Ultimately, it may be stated that pituicyte stellation is inducible upon mere actin depolymerization, and preventable upon actin organization, be it in the form of stress fibers or in a cortical configuration. [less ▲]

Detailed reference viewed: 27 (1 ULg)
Full Text
See detailPituitary Adenomas
Beckers, Albert ULg; Beckers, Albert ULg

Textual, factual or bibliographical database (2003)

Detailed reference viewed: 11 (0 ULg)
Full Text
See detailPituitary Adenomas
Beckers, Albert ULg; Beckers, Albert ULg

Textual, factual or bibliographical database (2001)

Detailed reference viewed: 17 (0 ULg)