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1.
Arch Pediatr ; 29(5): 331-339, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35644715

RESUMEN

This literature review focuses on the neonatal context. It provides an update of knowledge on the psychosocial consequences and communication needs expressed by parents. It highlights the obstacles to communication and proposes lines of thought for the development of new training systems to improve the communication practices of caregivers. OBJECTIVE: This review aims to assess and categorize the specific needs and expectations of families in terms of communication within the neonatal intensive care unit (NICU). METHODS: A bibliographic search was carried out on the Web of Sciences, PubMed and PsycArticles databases with the following keywords: "neonat* AND new* AND communication AND parent*". RESULTS: In total, 16 papers were selected showing that information and communication are particular needs for parents in NICUs. They are confronted with a stressful situation and have to deal with the fear and anticipation of the situation in a context of uncertainty. Parents are satisfied with the caregiver-parent relationship when the type of communication is adapted to the context and to their changing needs. Conversely, they feel excluded when they cannot be involved as they would like to be in the care or in the decision-making process. CONCLUSION: The development of new communication training methods and tools such as simulation would allow healthcare workers to acquire new communication skills focused on the needs of families.


Asunto(s)
Cuidadores , Unidades de Cuidado Intensivo Neonatal , Comunicación , Humanos , Recién Nacido , Padres/psicología
2.
BMC Pediatr ; 22(1): 137, 2022 03 15.
Artículo en Inglés | MEDLINE | ID: mdl-35291967

RESUMEN

BACKGROUND: In neonatology, parents play a central role as guarantors of the new-born's autonomy. Notifying parents about their infant's status in neonatal critical care is an integral part of the care. However, conveying this information can be very difficult for physicians and the neonatal medical team. The objective of this work is to assess the dimensions and dynamic processes of critical care communications in neonatal intensive care in order to enhance the development of theoretical and applied knowledge of these discussions. METHODS: This qualitative, descriptive study was conducted on critical care new-borns less than 28 days-old who were hospitalized in a neonatal intensive care unit. Verbatim communications with the parents were recorded using a dictaphone. RESULTS: The verbatim information had five themes: (a) critical care, (b) establishing the doctor-patient relationship, (c) assistance in decision making, (d) Socio-affective and (e) socio-symbolic dimensions. Our recordings underscored both the necessity of communication skills and the obligation to communicate effectively. Analysis of the dynamics of the communication process, according to the categories of delivering difficult information, showed few significant differences. CONCLUSION: Physician training needs to include how to effectively communicate to parents to optimize their participation and cooperation in managing their care.


Asunto(s)
Unidades de Cuidado Intensivo Neonatal , Relaciones Médico-Paciente , Comunicación , Humanos , Lactante , Recién Nacido , Cuidado Intensivo Neonatal/psicología , Padres/psicología , Investigación Cualitativa
4.
Arch Gynecol Obstet ; 302(6): 1479-1486, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-32671545

RESUMEN

PURPOSE: To assess the effects PCOS on live birth rates when transferring a single fresh ideal blastocyst. METHODS: A retrospective cohort study performed at the university-affiliated reproductive center. Women with PCOS and a control group of normal ovulatory women who underwent their first fresh embryo transfer with single ideal grade blastocyst were included in the study. Demographic, stimulation information and pregnancy outcomes were collected and analysed. The primary outcome was live birth rates, and secondary outcomes included pregnancy and clinical pregnancy rates. RESULTS: 71 Women with PCOS and 272 normal ovulatory controls underwent their first embryo transfer and met the inclusion and exclusion criteria. PCOS patient were younger (31.0 ± 3.7 vs. 33.1 ± 3.2, p = 0.0001), with higher AFC (40.0 ± 9.3 vs. 13.3 ± 4.6, p = 0.0001), required lower dose of gonadotropins to stimulate (1198 ± 786 vs. 1891 ± 1224, p = 0.0001), and had higher serum testosterone levels (2.3 ± 0.7 vs. 1.1 ± 0.3, p = 0.0001). No significant difference was found between the two groups regarding the number of previous pregnancies, the number of previous full-term pregnancies, the level of basal serum FSH, estradiol level at triggering and the BMI. When compared by Chi squared testing pregnancy rates, clinical pregnancy rates and live birth rates did not differ. However, when controlling (with multivariate stepwise logistic regression) for confounders, live birth rates were lower among the women with PCOS (p = 0.035, CI: 0.18-0.92). CONCLUSION: After controlling for confounders, when transferring a fresh single ideal blastocyst, live birth rates were lower among the women with PCOS than normal ovulatory controls.


Asunto(s)
Blastocisto/fisiología , Transferencia de Embrión , Fertilización In Vitro , Gonadotropinas/administración & dosificación , Síndrome del Ovario Poliquístico/terapia , Adulto , Tasa de Natalidad , Femenino , Fertilización/fisiología , Gonadotropinas/farmacología , Humanos , Hiperandrogenismo , Síndrome del Ovario Poliquístico/complicaciones , Embarazo , Resultado del Embarazo , Índice de Embarazo , Estudios Retrospectivos
5.
Fertil Steril ; 112(1): 98-104, 2019 07.
Artículo en Inglés | MEDLINE | ID: mdl-31133384

RESUMEN

OBJECTIVE: To compare the influence of dual suppression with the use of GnRH agonist plus aromatase inhibitor compared with suppression with the use of GnRH agonist alone or no suppression at all in patients with idiopathic recurrent implantation failure (RIF). DESIGN: Retrospective cohort study. SETTING: University-affiliated reproductive center. PATIENT(S): A total of 523 infertile women who failed two blastocyst transfers underwent a third frozen blastocyst transfer. Women with known endometriosis were excluded. INTERVENTION(S): A total of 204 subjects were not pretreated, 143 received 2 months of GnRH agonist (3.75 mg intramuscular leuprolide acetate monthly) only, and 176 received GnRH agonist and aromatase inhibitor (5 mg oral letrozole daily for 60 days). Demographic and stimulation information was collected and cycle outcomes reported. MAIN OUTCOME MEASURE(S): Clinical pregnancy rates. RESULT(S): Age, antral follicle count, basal FSH levels, duration of infertility, previous pregnancies, and full-term deliveries were similar (P>.05). Clinical pregnancy rates were higher among women who received GnRH agonist plus letrozole compared with women who received GnRH agonist only or women without pretreatment (63%, 42%, and 40%, respectively; P<.0001). Live birth rates were higher among women who received GnRH agonist plus letrozole compared with the other groups (56%, 36%, and 34%; P<.0001). No differences in pregnancy outcomes were noted between patients who did not receive pretreatment and those in the GnRH agonist only group. CONCLUSION(S): In patients with RIF, treatment with a GnRH agonist plus letrozole may improve live birth rates in subsequent cycles. We hypothesize that this improvement is due to alterations in the endometrium receptivity or treatment of undiagnosed endometriosis.


Asunto(s)
Inhibidores de la Aromatasa/uso terapéutico , Implantación del Embrión/efectos de los fármacos , Transferencia de Embrión , Fármacos para la Fertilidad Femenina/uso terapéutico , Fertilización In Vitro , Hormona Liberadora de Gonadotropina/agonistas , Infertilidad Femenina/terapia , Letrozol/uso terapéutico , Leuprolida/uso terapéutico , Adulto , Inhibidores de la Aromatasa/efectos adversos , Quimioterapia Combinada , Transferencia de Embrión/efectos adversos , Femenino , Fertilidad/efectos de los fármacos , Fármacos para la Fertilidad Femenina/efectos adversos , Fertilización In Vitro/efectos adversos , Humanos , Infertilidad Femenina/diagnóstico , Infertilidad Femenina/fisiopatología , Letrozol/efectos adversos , Leuprolida/efectos adversos , Nacimiento Vivo , Embarazo , Índice de Embarazo , Estudios Retrospectivos , Factores de Riesgo , Insuficiencia del Tratamiento
6.
Clin Cosmet Investig Dermatol ; 11: 579-589, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30519069

RESUMEN

Background: The frequency of dermatological acts is increasing. These procedures often cause injuries and traumatic alterations in specific skin layers, slowing down wound healing. Patients and methods: An open observational study lasting 1 month was conducted on 2,363 patients who had undergone various dermatological procedures. This study was conducted in eight European countries and an Asian country during which the tolerance and efficacy of a cosmetic cream based on Rhealba oat plantlets' extract, l-ALA-l-GLU dipeptide, and hyaluronic acid were assessed on patients' wounds. Results: Efficacy was observed 5' after the first application, which leads to an immediate relief, confirmed by the overall efficacy judged by the doctors as good or very good in 96.8% of the cases. In Germany, the efficacy of the same cream was assessed on children suffering from first- or second-degree burns. In this dermatopediatric case, the aim was to support the regeneration process and prevent scarring by using a topical cream rather than a silicon bandage or corticosteroids. A positive effect on skin regeneration and prevention of scaring could already be observed after 4 weeks of application without any undesired complication. Conclusion: This clinical focus complements the previous meta-analysis by demonstrating that the tested cream containing Rhealba oat plantlets' extracts, l-ALA-l-GLU dipeptide, and hyaluronic acid could also be used with a great efficacy in children after thermal burns to prevent scaring.

8.
Lupus ; 25(4): 339-42, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26846691

RESUMEN

Postural orthostatic tachycardia syndrome (POTS) is a heterogeneous disorder of the autonomic nervous system in which a change from the supine position to an upright position causes an abnormally large increase in heart rate or tachycardia (30 bpm within 10 min of standing or head-up tilt). This response is accompanied by a decrease in blood flow to the brain and hence a spectrum of symptoms associated with cerebral hypoperfusion. Many of these POTS-related symptoms are also observed in chronic anxiety and panic disorders, and therefore POTS is frequently under- and misdiagnosed.


Asunto(s)
Enfermedades Autoinmunes/inmunología , Autoinmunidad , Síndrome de Taquicardia Postural Ortostática/inmunología , Enfermedades Autoinmunes/diagnóstico , Enfermedades Autoinmunes/epidemiología , Enfermedades Autoinmunes/fisiopatología , Proteínas de la Cápside/inmunología , Circulación Cerebrovascular , Reacciones Cruzadas , Muerte Súbita Cardíaca/epidemiología , Frecuencia Cardíaca , Humanos , Proteínas Oncogénicas Virales/inmunología , Vacunas contra Papillomavirus/inmunología , Síndrome de Taquicardia Postural Ortostática/diagnóstico , Síndrome de Taquicardia Postural Ortostática/epidemiología , Síndrome de Taquicardia Postural Ortostática/fisiopatología , Factores de Riesgo , Posición Supina
9.
Mucosal Immunol ; 7(4): 995-1005, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24424521

RESUMEN

The Notch-1 signaling pathway is responsible for homeostatic tight junction expression in vitro, and promotes barrier function in vivo in the RAG1-adoptive transfer model of colitis. In this study, we sought to determine the role of colonic Notch-1 in the lymphoepithelial crosstalk in health and disease. We utilized in vivo and in vitro knockdown to target the expression of Notch-1. We identified that epithelial Notch-1 is required for appropriate activation of intestinal epithelial cells at steady state and upon inflammatory stimulus. Notch-1 expression modulates mucosal chemokine and cytokine secretion, and FoxP3 and effector T-cell responses. We showed that epithelial Notch-1 controls the immune function of the epithelium through crosstalk with the nuclear factor-κB (NF-κB)/mitogen-activated protein kinase (MAPK) pathways that, in turn, elicits T-cell responses. Overall, epithelial Notch-1 bridges innate and adaptive immunity in the gut. Our findings highlight an indispensable role for Notch-1-mediated signaling in the intricate epithelial-immune crosstalk, and validate that epithelial Notch-1 is necessary and sufficient to support protective epithelial proinflammatory responses.


Asunto(s)
Inmunidad Mucosa/fisiología , Membrana Mucosa/inmunología , Membrana Mucosa/metabolismo , Receptor Notch1/metabolismo , Animales , Línea Celular , Quimiocinas/genética , Colitis/genética , Colitis/inmunología , Colitis/metabolismo , Colon/inmunología , Colon/metabolismo , Citocinas/metabolismo , Modelos Animales de Enfermedad , Regulación de la Expresión Génica , Técnicas de Silenciamiento del Gen , Humanos , Mediadores de Inflamación/metabolismo , Ratones , Membrana Mucosa/patología , Índice de Severidad de la Enfermedad , Transducción de Señal , Subgrupos de Linfocitos T/inmunología , Subgrupos de Linfocitos T/metabolismo , Proteínas de Uniones Estrechas/genética , Proteínas de Uniones Estrechas/metabolismo
10.
J Eur Acad Dermatol Venereol ; 27(6): 785-8, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22188443

RESUMEN

BACKGROUND: Granuloma annulare (GA) is limited in most cases to isolated lesions, but more widespread generalized forms can be observed. In both cases, the treatment remains highly challenging. Isolated case reports suggested the interest of treating GA with a pulsed dye laser (PDL). OBJECTIVE: To evaluate the PDL in treating GA. MATERIALS AND METHODS: Retrospective multicentre study. Each patient should have at least two lesions of GA including at least one that remained untreated to serve as a control. The evaluation was performed on an Investigator Global Assessment for each lesion as compared with baseline. RESULTS: Thirteen patients (five with localized GA and eight with generalized GA) with a total of 59 lesions have been treated with a maximum of three PDL sessions. Sixteen lesions (27.1%) achieved >50% of clearing (14% of lesions for generalized GA and 56.2% for localized GA). Transient hyperpigmentation and crusting were observed in 59% and 86% of lesions respectively. The median follow-up was 6 months (2-12) and 10 lesions (all in generalized GA) recurred after initial clearing. CONCLUSION: Generalized GA showed weak improvement after treatment with a high recurrence rate. Only localized forms showed notable improvement in a more than half of treated lesions. Thus, PDL could be proposed as an alternative approach, but only for localized forms of GA.


Asunto(s)
Granuloma Anular/cirugía , Láseres de Colorantes/uso terapéutico , Adulto , Anciano , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Tiempo , Adulto Joven
11.
Arch Pediatr ; 19(4): 368-73, 2012 Apr.
Artículo en Francés | MEDLINE | ID: mdl-22381669

RESUMEN

OBJECTIVES: To describe respiratory distress (RD) in full-term neonates hospitalized in the NICU and to determine risk factors in this population for pneumothorax. STUDY DESIGN: Retrospective inclusion for 4 years of full-term neonates hospitalized for RD before the 2nd day of life. Neonates were separated into Group I (RD with no pneumothorax) and Group II (RD with pneumothorax). Data collected from maternal and newborn medical records were obstetrical, perinatal, and postnatal. P<0.05 was set as the significance level. RESULTS: Ninety-six neonates were included. In this population, 64 (66.7%) were male, 45 (46.9%) were born by cesarean section, and 30 (31.3%) by elective cesarean section. Neonatal outcome was 4.6 days of hospital stay, 47.4% odds of mechanical ventilation, and 17.7% of persistent pulmonary hypertension of the neonate (PPHN). A central catheter was needed in 25% of the patients and amine treatment in 3.1%. The number of neonates born by cesarean section was lower as term increased. Those born by cesarean section were more likely to develop PPHN (26.7 vs 9.8%; P=0.03), and those born without labor were more likely to require oxygen (83.3 vs 63.6%; P=0.05). When comparing Group I and Group II (32 neonates), absence of labor (RR 1.5) and birth outside of a level III maternity unit (RR 1.6) were risk factors for pneumothorax. These results were confirmed in multivariate analysis. In Group II, birth before 39 weeks was a risk factor for bilateral pneumothorax (P=0.01). The median length of hospitalization was significantly longer in Group II than in Group I (5.8 days vs 4 days, P=0.03). CONCLUSIONS: RD at term exposes the infant to high morbidity and pneumothorax, especially if born outside of a level III maternity unit and absence of labor.


Asunto(s)
Neumotórax/diagnóstico , Síndrome de Dificultad Respiratoria del Recién Nacido/diagnóstico , Cateterismo Venoso Central , Cesárea , Femenino , Francia , Edad Gestacional , Humanos , Recién Nacido , Unidades de Cuidado Intensivo Neonatal , Tiempo de Internación , Masculino , Síndrome de Circulación Fetal Persistente/diagnóstico , Neumotórax/etiología , Embarazo , Respiración Artificial , Síndrome de Dificultad Respiratoria del Recién Nacido/etiología , Resucitación , Estudios Retrospectivos , Factores de Riesgo
12.
Arch Pediatr ; 19(4): 361-7, 2012 Apr.
Artículo en Francés | MEDLINE | ID: mdl-22386845

RESUMEN

BACKGROUND AND AIMS: To describe the outcome of neonates with prenatal intestinal volvulus. PATIENTS AND METHODS: All neonates with prenatal intestinal volvulus managed in our institution between May 2004 and December 2010 were retrospectively studied. All neonates with prenatal or neonatal diagnosis of prenatal intestinal volvulus were included. We analyzed age at diagnosis, fetal ultrasound (US) scan and magnetic resonance imaging (MRI) findings, clinical signs at birth, surgical findings, management, and postoperative outcome. RESULTS: Ten neonates with prenatal intestinal volvulus were identified. Prenatal US scans or MRI demonstrated evidence of meconium peritonitis in one fetus and bowel dilatation in 2 others. The mean gestational age at birth was 36 weeks (range, 31-38 weeks) and the mean birth weight was 2811g (range, 2050-3700g). One premature neonate developed respiratory distress and required ventilatory support at birth. In 7 neonates, clinical examination showed distended abdomen and emesis, whereas plain abdominal radiographs showed intestinal obstruction. All neonates underwent surgery and all had normal intestinal rotation, except one with total intestinal volvulus secondary to malrotation. Other causes of volvulus were suspected in 4 neonates: mesenteric defect (n=1), intestinal atresia (n=2) and narrow mesentery (n=1). Detorsion of total volvulus, ileostomy, or intestinal resection with primary anastomosis was performed in 2, 5, and 3 neonates, respectively. One patient with total intestinal volvulus secondary to malrotation died, whereas all other neonates survived. In one patient, the postoperative course was complicated by intestinal dysmotility of the distal small bowel requiring a secondary jejunoileostomy. Stoma closure was subsequently performed at 1 year of age with good outcome. One patient developed angiocholitis treated successfully with antibiotics. Median time to initiate enteral feeds was 7 days (range, 4-16 days) and all patients were subsequently weaned from parenteral nutrition. Median duration of parenteral nutrition was 29 days (range, 6-667 days). None of the patients had cystic fibrosis. Unlike postnatal volvulus, most prenatal volvulus occurs without malrotation. Although prenatal volvulus is a life-threatening condition, our results suggest that good long-term outcome can be achieved in most cases.


Asunto(s)
Urgencias Médicas , Enfermedades Fetales/cirugía , Vólvulo Intestinal/congénito , Vólvulo Intestinal/cirugía , Femenino , Enfermedades Fetales/diagnóstico , Humanos , Lactante , Recién Nacido , Vólvulo Intestinal/diagnóstico , Yeyunostomía , Imagen por Resonancia Magnética , Masculino , Nutrición Parenteral Total , Cuidados Posoperatorios , Complicaciones Posoperatorias/diagnóstico , Complicaciones Posoperatorias/cirugía , Embarazo , Reoperación , Estudios Retrospectivos , Ultrasonografía Prenatal
13.
Ann Dermatol Venereol ; 138 Suppl 3: S219-22, 2011 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-22183103

RESUMEN

Management of couperosis and rosacea has been totally renewed by laser and vascular laser techniques, with efficacy targeted on the telangiectases and to a lesser extent on the erythrosis. Laser management of hypertrophic rosacea or rhinophyma depends on surgical treatment with decortication, continuous CO(2) ablative laser or Erbium, fractionated at high power, then vascular laser treatment for the telangiectases: lasers with pulsed dye, KTP, or pulsed lights for red laser telangiectases and long pulse Nd-Yag laser for blue telangiectases. For papulopustular rosacea, vascular laser treatment (pulsed dye and KTP) and intense pulsed light will be begun once the inflammation has been treated. The major indication for vascular lasers and intense pulsed light is found in erythematotelangiectatic rosacea, with high efficacy for the telangiectases. Diffuse erythrosis is difficult to treat, requiring a high number of laser and/or intense pulsed light sessions.


Asunto(s)
Terapia por Láser , Fototerapia , Rosácea/terapia , Telangiectasia/terapia , Eritema/terapia , Humanos , Láseres de Colorantes , Láseres de Estado Sólido
15.
Ann Dermatol Venereol ; 138 Suppl 2: S167-70, 2011 Sep.
Artículo en Francés | MEDLINE | ID: mdl-21907878

RESUMEN

Management of couperosis and rosacea has been totally renewed by laser and vascular laser techniques, with efficacy targeted on the telangiectases and to a lesser extent on the erythrosis. Laser management of hypertrophic rosacea or rhinophyma depends on surgical treatment with decortication, continuous CO(2) ablative laser or Erbium, fractionated at high power, then vascular laser treatment for the telangiectases: lasers with pulsed dye, KTP, or pulsed lights for red laser telangiectases and long pulse Nd-Yag laser for blue telangiectases. For papulopustular rosacea, vascular laser treatment (pulsed dye and KTP) and intense pulsed light will be begun once the inflammation has been treated. The major indication for vascular lasers and intense pulsed light is found in erythematotelangiectatic rosacea, with high efficacy for the telangiectases. Diffuse erythrosis is difficult to treat, requiring a high number of laser and/or intense pulsed light sessions.


Asunto(s)
Rosácea/terapia , Telangiectasia/terapia , Humanos , Terapia por Láser , Fototerapia
16.
Arch Pediatr ; 18(3): 287-90, 2011 Mar.
Artículo en Francés | MEDLINE | ID: mdl-21269813

RESUMEN

We report the case of a hypotrophic twin who presented neonatal abstinence syndrome to buprenorphine and developed neonatal seizures when the substitutive treatment by morphine was stopped. The other eutrophic twin did not develop withdrawal symptoms. This case demonstrates the unpredictable nature of transplacental transfer of buprenorphine. It also shows that neonatal abstinence syndrome can be potentially severe and that morphine treatment is not without risk.


Asunto(s)
Buprenorfina/efectos adversos , Narcóticos/efectos adversos , Síndrome de Abstinencia Neonatal/diagnóstico , Convulsiones/etiología , Buprenorfina/farmacocinética , Humanos , Recién Nacido , Morfina/uso terapéutico , Narcóticos/farmacocinética , Narcóticos/uso terapéutico , Síndrome de Abstinencia Neonatal/tratamiento farmacológico , Gemelos
18.
Dermatology ; 221(1): 34-42, 2010 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-20587996

RESUMEN

Hirsutism is a common disorder affecting between 5 and 15% of the population. One of the most devastating consequences of hirsutism is the presence of unwanted facial hair. Treatment of hirsutism involves a two-pronged approach: treating the underlying cause and reduction of visible hair. Laser hair removal is one of the most effective options for reducing visible hair, however, it may not be wholly effective in all patients and combination therapy may need to be considered. Pharmacological therapy is often used in combination with mechanical hair removal due to the time needed for the drug treatment to demonstrate visible results. Clinical data investigating the use of laser treatment in combination with other treatments has focused on laser with topical eflornithine. The expert working group reviews existing data and provides guidance on the use of eflornithine in combination with laser for resistant hirsutism.


Asunto(s)
Remoción del Cabello/métodos , Hirsutismo/terapia , Terapia Combinada/efectos adversos , Eflornitina/uso terapéutico , Cara , Femenino , Remoción del Cabello/efectos adversos , Hirsutismo/tratamiento farmacológico , Humanos , Terapia por Láser/efectos adversos , Terapia por Láser/métodos , Resultado del Tratamiento
19.
Skin Res Technol ; 14(4): 381-4, 2008 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-18937770

RESUMEN

UNLABELLED: Here we propose to quantify local temperature variations using thermal imaging to assess the effect of dermatological lasers. OBJECTIVES: To quantify the temperature raise induced by laser application and to differentiate the effects of a potassium titanyl phosphate (KTP) laser and an intense pulsed light (IPL). METHODS: A randomized comparative study was performed on 10 adult volunteers with symmetrical rosacea treated by KTP laser or IPL. Skin temperature measurements were performed on inclusion, immediately after laser treatment and 3 min after thermal water application, using a high-resolution (0.08 degrees C) infrared thermal video camera. RESULTS: KTP laser treatment induced a significant rise in local skin temperature whereas no significant change was revealed by the IPL treatment. The infrared camera is a reliable and reproducible technique that allows a follow-up of skin temperature without skin contact. CONCLUSION: Thermography using an infrared camera could potentially be applied in clinical pharmacology for inflammatory reactions or scarring processes.


Asunto(s)
Rosácea/diagnóstico , Temperatura Cutánea , Espectrofotometría Infrarroja/métodos , Termografía/métodos , Adulto , Femenino , Humanos , Rayos Infrarrojos , Masculino , Rosácea/fisiopatología , Rosácea/terapia
20.
Allergy ; 63(7): 882-90, 2008 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-18588554

RESUMEN

BACKGROUND: The underlying mechanisms responsible for allergic sensitization to food proteins remain elusive. To investigate the intrinsic properties (as well as the effect of pasteurization) of the milk proteins alpha-lactalbumin, beta-lactoglobulin and casein that promote the induction of milk allergy. METHODS: Alteration of structure and immune-reactivity of native and pasteurized proteins was assessed by gel filtration and ELISA. Uptake of these proteins was compared in vitro and in vivo. The biological effect was assessed by orally sensitizing C3H/HeJ mice with milk proteins followed by a graded oral challenge. Required dose to induce anaphylaxis, symptoms and mean body temperature was recorded. Antigen-specific antibodies and cytokine production by splenocytes were analyzed. RESULTS: Soluble beta-lactoglobulin and alpha-lactalbumin but not insoluble casein were readily transcytosed through enterocytes in vitro and in vivo. Pasteurization caused aggregation of beta-lactoglobulin and alpha-lactalbumin inhibiting uptake by intestinal epithelial cells in vitro and in vivo. Furthermore, aggregation redirected uptake to Peyer's patches, which promoted significantly higher Th2-associated antibody and cytokine production in mice than their native counterparts. Despite this only the soluble forms of beta-lactoglobulin and alpha-lactalbumin elicited anaphylaxis (following priming) when allergens were administered orally. Aggregated beta-lactoglobulin and alpha-lactalbumin as well as casein required systemic administration to induce anaphylaxis. CONCLUSIONS: These results indicate that triggering of an anaphylactic response requires two phases (1) sensitization by aggregates through Peyer's patches and (2) efficient transfer of soluble protein across the epithelial barrier. As the majority of common food allergens tend to form aggregates, this may be of clinical importance.


Asunto(s)
Alérgenos/inmunología , Manipulación de Alimentos/métodos , Lactalbúmina/inmunología , Lactoglobulinas/inmunología , Hipersensibilidad a la Leche/inmunología , Ganglios Linfáticos Agregados/inmunología , Administración Oral , Anafilaxia/inmunología , Animales , Formación de Anticuerpos , Temperatura Corporal , Caseínas/inmunología , Citocinas/inmunología , Relación Dosis-Respuesta Inmunológica , Enterocitos/inmunología , Femenino , Calor , Lactalbúmina/metabolismo , Ratones , Ratones Endogámicos C3H
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