University Hospital of Brest

Brest, France

University Hospital of Brest

Brest, France
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Kamide R.,Jikei University School of Medicine | Misery L.,University Hospital of Brest | Sibaud V.,Institute Claudius Regaud | Taieb C.,Public Health and Quality of Life
Journal of Dermatology | Year: 2013

Sensitive skin syndrome was first described in 1977; however, no robust study has been carried out to evaluate its prevalence in Japan. A national representative sample of the Japanese population over the age of 18 years was taken. Individuals were questioned by telephone and selected according to the quota method. When asked "Do you have a sensitive skin?", 52.84% of men and 55.98% of women answered "rather sensitive" or "very sensitive". There was no significant difference (P = 0.22) between the two sexes. The non-response rate among respondents was zero, suggesting that the term "sensitive skin" held a meaning for the majority of the population. Concerning questions about the onset of a rash, tingling or irritation in the presence of various factors, such as emotional issues, cold, heat, sun, dry air, air-conditioning, water, air pollution and temperature variations, respondents with rather sensitive or very sensitive skin responded "yes" more often than others: approximately three-times more often for water (18.97%/6.15%), air pollution (39.29%/12.45%) and warm climatic conditions (29.74%/9.8%). To our knowledge, this epidemiological study is the first to focus on sensitive skin among Japanese people of this century. It is of particular interest for two reasons: (i) it was conducted on a representative sample of the Japanese population; and (ii) the methodology used was identical to that used for sensitive skin assessment studies conducted in Europe and the USA, making it possible to draw certain comparisons. © 2012 Japanese Dermatological Association.

Clerc C.-J.,University Hospital of Brest | Misery L.,University Hospital of Brest
Acta Dermato-Venereologica | Year: 2017

Pruritus occurs frequently in the elderly population, but it has not been fully defined and its precise pre-valence is unknown. Putative causes of pruritus are numerous and patients’ quality of life can be greatly reduced. In the absence of any specific cause, a diagnosis of senile pruritus is proposed, suggesting that itch is secondary to ageing. However, the relationship of pruritus with skin ageing and/or neuronal ageing and/or immune ageing is poorly understood. Many treat ments have been reported, but are poorly effective. This paper reviews the literature on senile pruritus, in order to improve understanding of this condition and to enable improved diagnosis and treatment. © 2017 Acta Dermato-Venereologica.

Misery L.,University of Western Brittany | Misery L.,University Hospital of Brest | Talagas M.,University of Western Brittany | Talagas M.,University Hospital of Brest
Journal of Mammary Gland Biology and Neoplasia | Year: 2017

Breasts, including the nipple and areola, have two functions: lactation and as an erogenous area. Male breasts are much less studied that those of women. In men, breasts have only an erotic function. Because there is dense and very well organized innervation of the nipple-areola complex in men, nipple erection occurs frequently and via different mechanisms from penile erection. Although it seems to be less important for men than for women and it is poorly studied, the erotic value of breast stimulation is notable. Consequently, there is a need to include this aspect in sexological and andrological studies and to preserve breasts and their innervation or to reconstruct them in cases of surgical intervention. © 2017, Springer Science+Business Media New York.

Le Gall-Ianotto C.,European University of Brittany | Andres E.,Natura Innovation | Hurtado S.P.,Natura Innovation | Pereira U.,European University of Brittany | And 2 more authors.
Neuroscience | Year: 2012

The epidermis can be considered as a sensory organ. Sensory neurons of the peripheral nervous system send many primary afferent fibers to the skin, creating a dynamic communication with epidermal cells. However, little is known about the functional interactions between the sensory fibers and the keratinocytes. It is therefore difficult to reproduce these interactions in vitro. We have developed an in vitro model based on the coculture of primary human keratinocytes and the dorsal root ganglion cell line F-11. F-11 cells have been classically used to mimic authentic peptidergic nociceptive neurons. We first investigated the morphological and functional characteristics of F-11 cells cultured in basal keratinocyte medium and then analyzed the influence of keratinocytes on these properties. We found that F-11 cells survived and differentiated well in this medium. Therefore, the addition of neurotrophins did not enhance their survival or differentiation. These neurons expressed sensory neuron markers and were able to release neuropeptides after capsaicin activation. We noted that neuropeptides release were obtained even at a low calcium concentration and that axonal outgrowth was not influenced by external calcium (Ca2+) levels. These properties were reproduced when F-11 cells were cocultured with keratinocytes, but they had no significant influence on axonal development or neuropeptide release. In this study, we describe for the first time the culture of F-11 neurons with another cell type. This coculture model in which keratinocytes and neurons are maintained in low Ca2+ concentrations may be a useful in vitro alternative for studying and characterizing the close communication between keratinocytes and sensory neurons. © 2012 IBRO.

Misery L.,University Hospital of Brest | Misery L.,University of Western Brittany
Clinics in Dermatology | Year: 2017

Sensitive skin is a syndrome defined by the occurrence of unpleasant sensations (stinging, burning, pain, pruritus, and tingling sensations) in response to stimuli that normally should not provoke such sensations. The worldwide prevalence of sensitive skin is approximately 40%. Clinical, histologic, biochemical, and therapeutic data show that this condition is related to changes in epidermal nerve endings with subsequent hyperreactivity and neurogenic inflammation; hence, sensitive skin is not a psychosomatic disorder, although psychologic consequences are possible. © 2017 Elsevier Inc.

Misery L.,University of Western Brittany | Misery L.,University Hospital of Brest
Journal of Investigative Dermatology | Year: 2011

Acne may cause psychological distress that is associated with many psychiatric disorders. In this issue, Halvorsen et al. report suicidal ideation, mental health problems, and affective isolation to be relatively frequent in adolescents with acne. This report suggests that adverse events that have been attributed to therapies for acne, including suicidal ideation and depression, may reflect the burden of substantial acne rather than the effect of medications. © 2011 The Society for Investigative Dermatology.

Pons C.,University Hospital of Brest | Remy-Neris O.,French Institute of Health and Medical Research | Medee B.,University Hospital of Brest | Brochard S.,French Institute of Health and Medical Research
Developmental Medicine and Child Neurology | Year: 2013

Aim: The aim of this systematic review was to assess the current validity and reliability of radiological methods used to measure proximal hip geometry in children with cerebral palsy. Method: A search was conducted using relevant keywords and inclusion/exclusion criteria of the MEDLINE, CINALH Plus, Embase, Web of Science, Academic Search Premier, The Cochrane Library, and PsychINFO databases. Results: The migration percentage using X-rays showed excellent reliability and concurrent validity with three-dimensional (3D) measurements from computed tomography (CT) scans. The acetabular index, measured using X-rays had good reliability but moderate concurrent validity with 3D CT measurements; 3D CT scan indexes had greater reliability. The measurement of the neck shaft angle using X-rays showed excellent concurrent validity with measurements from 3D CT scans and excellent reliability. Regarding femoral anteversion, one study found an excellent correlation between two-dimensional CT and clinical assessment and excellent reliability. Two others showed less evidence for the use of CT ultrasounds. Interpretation: Most of the X-ray-based measurements showed good to excellent metrological properties. More metrological evidence is needed for the assessment of femoral anteversion. Magnetic resonance imaging and ultrasound-based measurements have great potential although very little metrological evidence is available. © 2013 Mac Keith Press.

Cheret J.,University of Western Brittany | Lebonvallet N.,University of Western Brittany | Buhe V.,University of Western Brittany | Carre J.L.,University of Western Brittany | And 4 more authors.
Journal of Dermatological Science | Year: 2014

Background: Close interactions exist between primary sensory neurons of the peripheral nervous system (PNS) and skin cells. The PNS may be implicated in the modulation of different skin functions as wound healing. Objective: Study the influence of sensory neurons in human cutaneous wound healing. Methods: We incubated injured human skin explants either with rat primary sensory neurons from dorsal root ganglia (DRG) or different neuropeptides (vasoactive intestinal peptide or VIP, calcitonin gene-related peptide or CGRP, substance P or SP) at various concentrations. Then we evaluated their effects on the proliferative and extracellular matrix (ECM) remodeling phases, dermal fibroblasts adhesion and differentiation into myofibroblasts. Results: Thus, DRG and all studied neuromediators increased fibroblasts and keratinocytes proliferation and act on the expression ratio between collagen type I and type III in favor of collagen I, particularly between the 3rd and 7th day of culture. Furthermore, the enzymatic activities of matrix metalloprotesases (MMP-2 and MMP-9) were increased in the first days of wound healing process. Finally, the adhesion of human dermal fibroblasts and their differentiation into myofibroblasts were promoted after incubation with neuromediators. Interestingly, the most potent concentrations for each tested molecules, were the lowest concentrations, corresponding to physiological concentrations. Conclusion: Sensory neurons and their derived-neuropeptides are able to promote skin wound healing. © 2014 Japanese Society for Investigative Dermatology.

Cheret J.,University of Western Brittany | Lebonvallet N.,University of Western Brittany | Carre J.-L.,University of Western Brittany | Misery L.,University of Western Brittany | And 3 more authors.
Wound Repair and Regeneration | Year: 2013

Due to the close interactions between the skin and peripheral nervous system, there is increasing evidence that the cutaneous innervation is an important modulator of the normal wound healing process. The communication between sensory neurons and skin cells involves a variety of molecules (neuropeptides, neurohormones, and neurotrophins) and their specific receptors expressed by both neuronal and nonneuronal skin cells. It is well established that neurotransmitters and nerve growth factors released in skin have immunoregulatory roles and can exert mitogenic actions; they could also influence the functions of the different skin cell types during the wound healing process. © 2013 by the Wound Healing Society.

Sheehan F.T.,U.S. National Institutes of Health | Brochard S.,U.S. National Institutes of Health | Brochard S.,University Hospital of Brest | Brochard S.,French Institute of Health and Medical Research | And 4 more authors.
Journal of Shoulder and Elbow Surgery | Year: 2014

Background: Obstetrical brachial plexus palsy (OBPP) is a common birth injury, resulting in severe functional losses. Yet, little is known about how OBPP affects the 3-dimensional (3D) humeral morphology. Thus, the purpose of this study was to measure the 3D humeral architecture in children with unilateral OBPP. Methods: Thirteen individuals (4 female and 9 male patients; mean age, 11.8 ± 3.3 years; mean Mallet score, 15.1 ± 3.0) participated in this institutional review board approved study. A 3D T1-weighted gradient-recalled echo magnetic resonance image set was acquired for both upper limbs (involved and noninvolved). Humeral size, version, and inclination were quantified from 3D humeral models derived from these images. Results: The involved humeral head was significantly less retroverted and in declination (medial humeral head pointed anteriorly and inferiorly) relative to the noninvolved side. Osseous atrophy was present in all 3 dimensions and affected the entire humerus. The inter-rater reliability was excellent (intraclass correlation coefficient, 0.96-1.00). Discussion: This study showed that both humeral atrophy and bone shape deformities associated with OBPP are not limited to the axial plane but are 3D phenomena. Incorporating information related to these multi-planar, 3D humeral deformities into surgical planning could potentially improve functional outcomes after surgery. The documented reduction in retroversion is an osseous adaptation, which may help maintain glenohumeral congruency by partially compensating for the internal rotation of the arm. The humeral head declination is a novel finding and may be an important factor to consider when one is developing OBPP management strategies because it has been shown to lead to significant supraspinatus inefficiencies and increased required elevation forces. © 2014 .

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