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1.
Article de Anglais | MEDLINE | ID: mdl-38898360

RÉSUMÉ

PURPOSE: To assess the reliability of excising residual breast cancer lesions after neoadjuvant systemic therapy (NAST) using a previously localized paramagnetic seed (Magseed®) and the subsequent use of contrast-enhanced spectral mammography (CESM) to evaluate response. METHODS: Observational, prospective, multicenter study including adult women (> 18 years) with invasive breast carcinoma undergoing NAST between January 2022 and February 2023 with non-palpable tumor lesions at surgery. Radiologists marked tumors with Magseed® during biopsy before NAST, and surgeons excised tumors guided by the Sentimag® magnetometer. CESMs were performed before and after NAST to evaluate tumor response (Response Evaluation Criteria for Solid Tumors [RECIST]). We considered intraoperative, surgical, and CESM-related variables and histological response. RESULTS: We analyzed 109 patients (median [IQR] age of 55.0 [46.0, 65.0] years). Magseed® was retrieved from breast tumors in all surgeries (100%; 95% CI 95.47-100.0%) with no displacement and was identified by radiology in 106 patients (97.24%), a median (IQR) of 176.5 (150.0, 216.3) days after marking. Most surgeries (94.49%) were conservative; they lasted a median (IQR) of 22.5 (14.75, 40.0) min (95% CI 23.59-30.11 min). Most dissected tumor margins (93.57%) were negative, and few patients (5.51%) needed reintervention. Magseed® was identified using CESM in all patients (100%); RECIST responses correlated with histopathological evaluations of dissected tumors using the Miller-Payne response grade (p < 0.0001) and residual lesion diameter (p < 0.0001). Also 69 patients (63.3%) answered a patient's satisfaction survey and 98.8% of them felt very satisfied with the entire procedure. CONCLUSION: Long-term marking of breast cancer lesions with Magseed® is a reliable and feasible method in patients undergoing NAST and may be used with subsequent CESM.

2.
Telemed Rep ; 5(1): 12-17, 2024.
Article de Anglais | MEDLINE | ID: mdl-38469167

RÉSUMÉ

Introduction: Skin lesions are a common extraintestinal manifestation associated with inflammatory bowel disease (IBD), although they may also appear as a complication of IBD treatment. Prompt referral to the dermatologist can be very helpful in practice. Teledermatology complements the traditional in-person health care modality, improving access to dermatological care. Objective: To evaluate the impact of a store-and-forward teledermatology electronic consultation (e-consult) program on the care of IBD patients. Methods: A retrospective study assessing the outcomes of our teledermatology program over its first 2 years of implementation. Results: A total of 39 consultations involving 33 patients (69.2% women, mean age 39.6 years [12-63]) were conducted. The mean number of teleconsultations was 2.8 per month in the initial implementation stage: 33 consultations were carried out in patients with Crohn's disease and 6 in ulcerative colitis. Only 18% of the patients had an active flare-up. The most frequent reason for the e-consult was paradoxical psoriasiform lesions (n = 13, 33.3%), commonly related with anti-tumor necrosis factor agents (70% of the patients) and hidradenitis suppurativa (n = 4, 10.3%). Resolution was achieved in 87% of patients, with a mean waiting time of 4.7 days (0-14). Almost all patients (97%) were satisfied with our program, and considered the referral through the program to be appropriate (92%). Best valued features were the reduced waiting time and the coordinated approach between the two departments involved. Conclusions: Dermatology e-consult is an efficient and useful means of optimizing IBD patient care.

3.
Reumatol Clin (Engl Ed) ; 19(9): 500-506, 2023 Nov.
Article de Anglais | MEDLINE | ID: mdl-37945183

RÉSUMÉ

INTRODUCTION: Inflammatory rheumatic diseases usually affect women of childbearing age treated with biologic drugs. However, there is a lack of literature on the efficacy and toxicity of biologic disease-modifying drugs during pregnancy. The aim of this study was to determine the presence of pregnant patients treated with bDMARDs in a real-world dataset and to examine the impact of pregnancy and lactation on the evolution of rheumatic disease in a registry of Spanish patients. METHOD: This was a multicentre prospective study with a real-world setting. Information was obtained from BIOBADASER registry. Patients included are women who got pregnant until November 2020 from 19 rheumatology units. We conducted proportions, means, and standard deviations (SD) to describe the study population and the use of treatments. T-test and Chi-square test were applied to assess differences between groups. RESULT: Ninety cases of pregnancy were registered (n=68 full-term pregnancies; n=22 spontaneous miscarriages). Most of the cases discontinued bDMARDs during pregnancy (78.9%) but 13 cases continued treatment during pregnancy, mainly using certolizumab pegol. These cases were obtaining better management of rheumatic disease, although the differences were not statistically significant [DAS28-CRP, 2.9 (SD: 1.6) vs. 2.0 (1.2), p=.255; DAS28-ESR, 2.2 (1.0) vs. 1.7 (.5), p=.266]. No serious adverse events were reported during pregnancy and lactation. CONCLUSION: Being pregnant is still an uncommon condition in patients with rheumatic diseases and using bDMARDs. Our results show that rheumatic disease tended to progress better during pregnancy in patients who continued to take bDMARDs.


Sujet(s)
Produits biologiques , Rhumatismes , Rhumatologie , Grossesse , Humains , Femelle , Mâle , Études prospectives , Rhumatismes/traitement médicamenteux , Enregistrements
4.
Reumatol. clín. (Barc.) ; 19(9): 500-506, Nov. 2023. tab
Article de Anglais | IBECS | ID: ibc-226605

RÉSUMÉ

Introduction: Inflammatory rheumatic diseases usually affect women of childbearing age treated with biologic drugs. However, there is a lack of literature on the efficacy and toxicity of biologic disease-modifying drugs during pregnancy. The aim of this study was to determine the presence of pregnant patients treated with bDMARDs in a real-world dataset and to examine the impact of pregnancy and lactation on the evolution of rheumatic disease in a registry of Spanish patients.Method: This was a multicentre prospective study with a real-world setting. Information was obtained from BIOBADASER registry. Patients included are women who got pregnant until November 2020 from 19 rheumatology units. We conducted proportions, means, and standard deviations (SD) to describe the study population and the use of treatments. T-test and Chi-square test were applied to assess differences between groups.Result: Ninety cases of pregnancy were registered (n=68 full-term pregnancies; n=22 spontaneous miscarriages). Most of the cases discontinued bDMARDs during pregnancy (78.9%) but 13 cases continued treatment during pregnancy, mainly using certolizumab pegol. These cases were obtaining better management of rheumatic disease, although the differences were not statistically significant [DAS28-CRP, 2.9 (SD: 1.6) vs. 2.0 (1.2), p=.255; DAS28-ESR, 2.2 (1.0) vs. 1.7 (.5), p=.266]. No serious adverse events were reported during pregnancy and lactation.Conclusion: Being pregnant is still an uncommon condition in patients with rheumatic diseases and using bDMARDs. Our results show that rheumatic disease tended to progress better during pregnancy in patients who continued to take bDMARDs.(AU)


Introducción: Las enfermedades reumáticas inflamatorias afectan normalmente a mujeres en edad fértil tratadas con fármacos biológicos. Sin embargo, escasea la literatura sobre la eficacia y la toxicidad de los fármacos modificadores de la enfermedad (FAME) biológicos durante el embarazo. El objetivo de este estudio fue determinar la presencia de pacientes embarazadas tratadas con FAME biológicos en un conjunto de datos del mundo real y examinar el impacto del embarazo y la lactancia en la evolución de la enfermedad reumática en un registro de pacientes españoles.Método: Estudio prospectivo multicéntrico en un entorno del mundo real. La información se obtuvo del registro BIOBADASER. Los pacientes fueron mujeres embarazadas hasta el mes de noviembre del 2020, de 19 unidades de Rreumatología. Obtuvimos proporciones, medias y desviaciones estándar (DE) para describir la población de estudio y el uso de tratamientos. Se realizaron las pruebas t y χ2 para evaluar las diferencias entre grupos.Resultado:Se registraron 90 casos de embarazo (n=68 embarazos a término; n=22 abortos espontáneos). La mayoría de los casos suspendieron el tratamiento con FAME biológicos durante el embarazo (78,9%), pero 13 casos prosiguieron el tratamiento durante el embarazo, utilizando principalmente certolizumab pegol. Dichos casos obtuvieron un mejor manejo de la enfermedad reumática, aunque las diferencias no fueron estadísticamente significativas (DAS28-CRP, 2,9 [DE 1,6] vs. 2 [1,2], p=0,255; DAS28-ESR, 2,2 [1] vs. 1,7 [0,5], p=0,266). No se reportaron episodios adversos graves durante el embarazo y la lactancia.Conclusión: La situación de embarazo sigue siendo infrecuente en las pacientes con enfermedades reumáticas que utilizan FAME biológicos. Nuestros resultados reflejan que la enfermedad reumática tendió a progresar mejor durante el embarazo en las mujeres tratadas con FAME biológicos.(AU)


Sujet(s)
Humains , Femelle , Grossesse , Rhumatismes/complications , Complications de la grossesse , Certolizumab pégol , Antirhumatismaux/toxicité , Produits biologiques/toxicité , Rhumatologie , Rhumatismes/traitement médicamenteux , Études prospectives , Lactation , Avortement , Antirhumatismaux/usage thérapeutique , Produits biologiques/usage thérapeutique
6.
Clin Rheumatol ; 42(9): 2409-2417, 2023 Sep.
Article de Anglais | MEDLINE | ID: mdl-37225928

RÉSUMÉ

OBJECTIVE: The study aims to evaluate the utility of major salivary gland ultrasonography for diagnosis of primary Sjögren's syndrome (pSS) and to assess its concordance with minor salivary gland biopsy (MSGB). METHODS: A cross-sectional study of 72 patients with suspected pSS was performed. Demographic, clinical, and serological data were collected. MSGB was performed, as was ultrasonography. The ultrasound technician was blind to clinical, serological, and histological data. The validity of ultrasonography compared with MSGB, the American-European Consensus Group (AECG), and American College of Rheumatology (ACR)/European Alliance of Associations for Rheumatology (EULAR) criteria was assessed by calculating the percentage of agreement, sensitivity, specificity, positive and negative predictive values, and area under the curve (AUC). RESULTS: Based on MSGB as the gold standard, the percentage of agreement between both tests was 78% (AUC 0.75). Based on the ACR/EULAR criteria, the percentage of agreement was 83% (AUC 0.78) for ultrasonography and 81% (AUC 0.83) for biopsy. Sensitivity and specificity were 90% and 67%, respectively, for ultrasonography and 76% and 90% for biopsy. The results were similar with the AECG criteria. The intra- and inter-observer variability was good (κ > 0.7). Significant differences were observed for positive anti-Ro52 values and hypergammaglobulinemia in pathological ultrasound scans. CONCLUSION: Diagnostic ultrasonography is as useful as MSGB in pSS. Therefore, it could be included in the classification criteria. In this cohort, it proved more sensitive than MSGB and could be used as an initial test for patients suspected of having pSS. MSGB could be used in cases where clinical and serological results are inconclusive. Key Points • Major salivary gland ultrasonography adds diagnostic value similar to that of MSGB, thus potentially enabling this invasive procedure to be avoided. • Ultrasonography could be included in the classification criteria for primary Sjögren's syndrome. • Given that ultrasonography is more sensitive and less specific than MSGB, it could be used as an initial diagnostic test in patients with suspected Sjögren's syndrome. • Biopsy should be performed in those cases where ultrasonography, clinical, and serological data are inconclusive.


Sujet(s)
Syndrome de Gougerot-Sjögren , Humains , Syndrome de Gougerot-Sjögren/imagerie diagnostique , Syndrome de Gougerot-Sjögren/anatomopathologie , Études transversales , Glandes salivaires/imagerie diagnostique , Glandes salivaires/anatomopathologie , Échographie/méthodes , Biopsie
7.
Mol Biol Evol ; 38(5): 1924-1942, 2021 05 04.
Article de Anglais | MEDLINE | ID: mdl-33386848

RÉSUMÉ

Revealing the mechanisms underlying the breathtaking morphological diversity observed in nature is a major challenge in Biology. It has been established that recurrent mutations in hotspot genes cause the repeated evolution of morphological traits, such as body pigmentation or the gain and loss of structures. To date, however, it remains elusive whether hotspot genes contribute to natural variation in the size and shape of organs. As natural variation in head morphology is pervasive in Drosophila, we studied the molecular and developmental basis of differences in compound eye size and head shape in two closely related Drosophila species. We show differences in the progression of retinal differentiation between species and we applied comparative transcriptomics and chromatin accessibility data to identify the GATA transcription factor Pannier (Pnr) as central factor associated with these differences. Although the genetic manipulation of Pnr affected multiple aspects of dorsal head development, the effect of natural variation is restricted to a subset of the phenotypic space. We present data suggesting that this developmental constraint is caused by the coevolution of expression of pnr and its cofactor u-shaped (ush). We propose that natural variation in expression or function of highly connected developmental regulators with pleiotropic functions is a major driver for morphological evolution and we discuss implications on gene regulatory network evolution. In comparison to previous findings, our data strongly suggest that evolutionary hotspots are not the only contributors to the repeated evolution of eye size and head shape in Drosophila.


Sujet(s)
Évolution biologique , Yeux composés des arthropodes/anatomie et histologie , Drosophila/anatomie et histologie , Pléiotropie , Animaux , Yeux composés des arthropodes/croissance et développement , Drosophila/physiologie , Protéines de Drosophila/métabolisme , Femelle , Réseaux de régulation génique , Tête/anatomie et histologie , Larve/croissance et développement , Mâle , Spécificité d'espèce , Facteurs de transcription/métabolisme , Transcriptome
8.
J Ultrasound Med ; 38(2): 529-531, 2019 Feb.
Article de Anglais | MEDLINE | ID: mdl-30058165

RÉSUMÉ

The use of Mohs micrographic surgery for poorly defined cutaneous tumors is present in a few departments in Spain. Reintervention is occasionally necessary when the margins of the surgical specimen are invaded by the tumor. We propose the use of ultrasound to assess these margins by imaging the surgical specimen once excised.


Sujet(s)
Carcinome basocellulaire/imagerie diagnostique , Tumeurs cutanées/imagerie diagnostique , Sujet âgé , Carcinome basocellulaire/chirurgie , Procédures chirurgicales dermatologiques , Femelle , Humains , Mâle , Études prospectives , Peau/imagerie diagnostique , Tumeurs cutanées/chirurgie , Échographie/méthodes
9.
Acta Dermatovenerol Croat ; 25(4): 305-306, 2017 Dec.
Article de Anglais | MEDLINE | ID: mdl-30064607

RÉSUMÉ

Dear Editor, Lupus panniculitis or lupus profundus is a rare inflammatory complication found in patients with systemic lupus erythematosus (SLE), or discoid lupus erythematosus (DLE) (1). When the breast is involved, the term lupus mastitis (LM) is used. This disease involving the breast is rare, and the lesions may precede, coincide with, or occur later than the onset of other lupus lesions. Tissue biopsy is required to confirm the suspected diagnoses of LM. We report a case of a patient with lupus mastitis due to the important differential diagnosis. A 60-year-old woman presented with a painful nodular lesion in her left breast that had appeared 15 days ago (Figure 1, a). She had been previously diagnosed with discoid lupus erythematosus 3 years ago. Physical examination revealed a deep and firm erythematous subcutaneous nodule without overlying skin involvement in the lower-central portion of the left breast. Laboratory findings were positive for antinuclear antibodies (1:80) and double-stranded deoxynucleic acid antibodies (1:10). Mammography and ultrasounds showed an area of increased density and irregular breast tissue along with an important thickening of the overlying skin (Figure 1, b). On suspicion of malignancy, a needle biopsy of the breast lesion was performed and showed vacuolar alteration and lymphocytic infiltrate in the basal layer. Subcutaneous fat showed a lobular panniculitis with a prominent lymphocytic infiltrate and hyalinization of the fat lobules (hyaline fat necrosis). Direct immunofluorescence of the face biopsy revealed IgA, IgG, IgM, and C3 granular deposition. Based on these results, a diagnosis of lupus mastitis associated with DLE was established. Antimalarial therapy resulted in complete resolution of the clinical features. Three years later, the patient presented with a disfiguring atrophy with retraction in the damaged areas of the breast (Figure 2). Lupus mastitis is a very unusual disease that most commonly affects middle-aged women. The first case of LM was described by Tuffanelli in 1971. The lesions usually present following the diagnosis of SLE/DLE; however, on rare occasions they may be observed earlier (2). The histophysiology of this disease remains unclear, but the predominant theory suggests an autoimmune-related etiology. Corroborating evidence for this theory includes the finding of immune complexes, both at the basement membrane of the dermal-epidermal junction and in the blood vessels in the areas of panniculitis (3). Lupus mastitis may be present in the breast as single or multiple subcutaneous nodules that may be tender or painful and can progress to chronic ulcers over time or resolve, leaving atrophic scars. The overlying skin can be normal, erythematous, poikilodermic or ulcerated. When skin changes are prominent, the lesion may clinically and radiologically mimic inflammatory breast carcinoma. Mammographic and ultrasounds findings include an ill-defined breast density with or without associated microcalcifications (4). Histologically, this disease is characterized by lobular lymphocytic panniculitis and predominantly involves the fat lobule and the presence of anucleated adipocytes in a background of a glassy-appearing collagenous stroma (hyaline fat necrosis). Fibrinoid necrosis of the vessel wall has also been reported, but is usually absent (5). Differential diagnosis of lupus mastitis includes inflammatory breast carcinoma, primary medullary carcinoma, and other immune-mediated inflammatory conditions such as diabetic mastopathy. The first line of treatment the use of antimalarial drugs such as hydroxychloroquine. Systemic steroids and cyclophosphamide have also been used. Surgical treatment should be considered only in patients who do not respond to management with medications. In summary, we reported a case of lupus mastitis in a patient with discoid lupus erythematosus. This dermatosis should be considered in the differential diagnosis of breast lesions in lupus patients, and a biopsy of the breast lesion is essential to reject suspected malignancy. If the disease is left untreated, unsightly atrophy will appear; it is thus important to diagnose early on. The course of the disease tends to be chronic with remission and flares, so patients should be followed-up regularly due to the risk of recurrences in the same area or in a different location.


Sujet(s)
Lupus érythémateux chronique/complications , Lupus érythémateux chronique/diagnostic , Mastite/étiologie , Mastite/anatomopathologie , Femelle , Humains , Mastite/imagerie diagnostique , Adulte d'âge moyen
11.
J Sci Food Agric ; 95(13): 2626-31, 2015 Oct.
Article de Anglais | MEDLINE | ID: mdl-25378259

RÉSUMÉ

BACKGOUND: The washing operation of fish muscle is one of the key steps in the production of surimi. The aim of this study was to assess in parasitised minced fish the effect of the washing steps on the allergen removal of Anisakis simplex and on protein yield during surimi processing. Experimentally infected hake (Merluccius merluccius) (50 Anisakis simplex s.s L3 larvae per 100 g of muscle) underwent three successive washing steps with water, phosphate buffer (20 mmol L(-1) ), sodium bicarbonate (60 mmol L(-1) ), or sodium hypochlorite (0.27 mmol L(-1) ) in the surimi processing (4 kg muscle, 1:4 w/v for each solution). Total protein concentration and A. simplex antigens and allergens were evaluated in each waste fraction. RESULTS: The highest removal of Ani s 4 and A. simplex antigens was achieved by using phosphate buffer, together with a good protein yield in the raw surimi. Decrease of the concentration of allergens and antigens as a function of the washing steps rendered a linear trend (R(2) = 0.95 and 0.98 for Ani s 4 and A. simplex antigens, respectively). CONCLUSION: The conditions for an optimal removal of Anisakis allergens can be established and calculated as a function of the washing steps. This approach opens a line to utilise parasitised fish in a safer way. © 2014 Society of Chemical Industry.


Sujet(s)
Allergènes , Anisakis , Manipulation des aliments/méthodes , Gadiformes/parasitologie , Phosphates , Produits de la mer , Séquence d'acides aminés , Animaux , Substances tampon , Protéines alimentaires/analyse , Désinfection/méthodes , Humains , Larve , Muscles/parasitologie , Hydrogénocarbonate de sodium , Hypochlorite de sodium
12.
J Sci Food Agric ; 95(5): 922-7, 2015 Mar 30.
Article de Anglais | MEDLINE | ID: mdl-24888867

RÉSUMÉ

BACKGROUND: Some technological and food processing treatments applied to parasitized fish kill the Anisakis larvae and prevent infection and sensitization of consumers. However, residual allergenic activity of parasite allergens has been shown. The aim here was to study the effect of different heat treatments used in the fish canning processing industry on the antigen recognition of Anisakis L3. Bigeye tuna (Thunnus obesus) and yellowfin tuna (Thunnus albacares) were experimentally infected with live L3 Anisakis. After 48 h at 5 ± 1 °C, brine was added to the muscle, which was then canned raw (live larvae) or heated (90 °C, 30 min) (dead larvae) and treated at 113 °C for 60 min or at 115 °C for 90 min. Anisakis antigens and Ani s 4 were detected with anti-crude extract and anti-Ani s 4 antisera respectively. RESULTS: Ani s 4 decreased in all lots, but the muscle retained part of the allergenicity irrespective of the canning method, as observed by immunohistochemistry. Dot blot analysis showed a high loss of Ani s 4 recognition after canning, but residual antigenicity was present. CONCLUSION: The results indicate that heat treatment for sterilization under the conditions studied produces a decrease in Ani s 4 and suggest a potential exposure risk for Anisakis-sensitized patients.


Sujet(s)
Anisakis/immunologie , Antigènes d'helminthe/analyse , Conservation aliments , Protéines d'helminthes/analyse , Muscles squelettiques/parasitologie , Produits de la mer/parasitologie , Thon/parasitologie , Allergènes/analyse , Allergènes/composition chimique , Animaux , Anisakis/composition chimique , Anisakis/isolement et purification , Anisakis/métabolisme , Antigènes d'helminthe/composition chimique , Océan Atlantique , Femelle , Poissons/parasitologie , Protéines d'helminthes/composition chimique , Protéines d'helminthes/métabolisme , Température élevée , Immunotransfert , Immunohistochimie , Larve/composition chimique , Larve/immunologie , Larve/métabolisme , Microscopie électronique à transmission , Muscles squelettiques/composition chimique , Muscles squelettiques/ultrastructure , Ovaire/parasitologie , Stabilité protéique , Produits de la mer/analyse , Espagne , Thon/immunologie , Viscères/parasitologie
13.
Dermatol Online J ; 20(5): 22639, 2014 May 16.
Article de Espagnol | MEDLINE | ID: mdl-24852778

RÉSUMÉ

Lichen planus pigmentosus is an uncommon variant of lichen planus that is characterized by the insidious onset of dark brown macules in sun-exposed areas and flexural folds. Superimposed linear lichen planus is an exceedingly rare disorder, but it has been found in both lichen planopilaris and lichen planus types. A 39-year-old woman is presented showing a segmental and linear lichen planus associated with non-segmental lesions meeting all criteria for the diagnosis of superimposed linear planus pigmentosus. The segmental lesions were always more pronounced.


Sujet(s)
Hyperpigmentation/anatomopathologie , Lichen plan/anatomopathologie , Adulte , Femelle , Humains , Hyperpigmentation/thérapie , Lichen plan/thérapie , Traitement par ultraviolets
15.
J Food Prot ; 74(12): 2119-26, 2011 Dec.
Article de Anglais | MEDLINE | ID: mdl-22186053

RÉSUMÉ

Inactivation of parasites in food by microwave treatment may vary due to differences in the characteristics of microwave ovens and food properties. Microwave treatment in standard domestic ovens results in hot and cold spots, and the microwaves do not penetrate all areas of the samples depending on the thickness, which makes it difficult to compare microwave with conventional heat treatments. The viability of Anisakis simplex (isolated larvae and infected fish muscle) heated in a microwave oven with precise temperature control was compared with that of larvae heated in a water bath to investigate any additional effect of the microwaves. At a given temperature, less time was required to kill the larvae by microwaves than by heated water. Microwave treatment killed A. simplex larvae faster than did conventional cooking when the microwaves fully penetrated the samples and resulted in fewer changes in the fish muscle. However, the heat-stable allergen Ani s 4 was detected by immunohistochemistry in the fish muscle after both heat treatments, even at 70°C, suggesting that Ani s 4 allergens were released from the larvae into the surrounding tissue and that the tissues retained their allergenicity even after the larvae were killed by both heat treatments. Thus, microwave cooking will not render fish safe for individuals already sensitized to A. simplex heat-resistant allergens.


Sujet(s)
Anisakis/croissance et développement , Manipulation des aliments/méthodes , Parasitologie alimentaire , Micro-ondes , Produits de la mer/parasitologie , Allergènes/analyse , Allergènes/immunologie , Animaux , Anisakis/immunologie , Sécurité des produits de consommation , Produits de la pêche/parasitologie , Poissons/parasitologie , Hypersensibilité alimentaire , Sécurité des aliments , Température élevée , Humains , Rayons infrarouges , Larve
16.
Pediatr Dermatol ; 28(6): 707-710, 2011.
Article de Anglais | MEDLINE | ID: mdl-21906144

RÉSUMÉ

We report a 7-year-old boy with a past medical history of B-cell leukemia with dysmorphic features, including cleft palate, hypotrichosis with trichorrhexis nodosa, hypohidrosis, oligodontia, and ridging of nails. A heterozygous germline mutation, Ala111Thr, in the p63 gene was detected in the boy and in his mother, who had no clinical expression. This case emphasizes the spectrum of different phenotypical manifestations of mutations in the p63 gene and underlines the possible role of this gene as a tumor suppressor.


Sujet(s)
Dysplasie ectodermique/génétique , Hétérozygote , Leucémie B/génétique , Mutation ponctuelle , Facteurs de transcription/génétique , Protéines suppresseurs de tumeurs/génétique , Adulte , Enfant , Bec-de-lièvre/génétique , Fente palatine/génétique , Femelle , Mutation germinale , Humains , Mâle
18.
Parasitol Res ; 107(6): 1399-404, 2010 Nov.
Article de Anglais | MEDLINE | ID: mdl-20694563

RÉSUMÉ

In this study, we researched the presence of anisakids in specimens of Merluccius merluccius caught in the area of Little Sole Bank, in the Northeast Atlantic, and found that 100% of the European hake examined were infected and showed high average values of abundance (976.88) and intensity (976.88). The larvae were identified in morphological terms as morphotype type I and in molecular terms as Anisakis simplex s.s via polymerase chain reaction (PCR) restriction fragment length polymorphism of the rDNA. The genetic variability of the A. simplex s.s population in the North Atlantic is notable, with at least two ribosomal and three mitochondrial haplotypes which are different from the specimen used as control, reflecting the diversity of this species, an aspect which has scarcely been studied to date. The cox-2 gene appears to be an interesting candidate for generating new genetic markers which can be applied to differentiate between A. simplex s.s and Anisakis pegreffii. We detected 11 fixed differences in this gene, and it also offers the advantage of being easily amplified by PCR. The high prevalence of infection by A. simplex s.s and the extremely high average intensity and abundance values can have significant repercussions on public health, especially among populations which regularly eat insufficiently cooked or raw fish and have a certain genetic predisposition; the genetic variability of the parasite could be another factor to take into account.


Sujet(s)
Anisakiase/médecine vétérinaire , Anisakis/classification , Anisakis/génétique , Maladies des poissons/parasitologie , Gadiformes/parasitologie , Variation génétique , Animaux , Anisakis/anatomie et histologie , Anisakis/isolement et purification , Océan Atlantique , Cyclooxygenase 2/génétique , ADN des helminthes/génétique , ADN mitochondrial/génétique , ADN ribosomique/génétique , Haplotypes , Protéines d'helminthes/génétique , Réaction de polymérisation en chaîne , Polymorphisme de restriction
19.
Foodborne Pathog Dis ; 7(8): 967-73, 2010 Aug.
Article de Anglais | MEDLINE | ID: mdl-20500085

RÉSUMÉ

Fish-borne parasitic zoonoses such as Anisakiasis were once limited to people living in countries where raw or undercooked fish is traditionally consumed. Nowadays, several factors, such as the growing international markets, the improved transportation systems, the population movements, and the expansion of ethnic ways of cooking in developed countries, have increased the population exposed to these parasites. Improved diagnosis technology and a better knowledge of the symptoms by clinicians have increased the Anisakiasis cases worldwide. Dietary recommendations to Anisakis-sensitized patients include the consumption of frozen or well-cooked fish, but these probably do not defend sensitized patients from allergen exposure. The aim of our work was to develop a sensitive and specific method to detect and quantify Anisakis simplex allergens in fish muscle and its derivatives. Protein extraction was made in saline buffer followed by preparation under acid conditions. A. simplex antigens were detected by IgG immunoblot and quantified by dot blot. The allergenic properties of the extracts were assessed by IgE immunoblotting and basophil activation test. We were able to detect less than 1 ppm of A. simplex antigens, among them the allergen Ani s 4, in fish muscle with no cross-reactions and with a recovery rate of 82.5%. A. simplex antigens were detected in hakes and anchovies but not in sardines, red mullets, or shellfish. We detected A. simplex allergens in cooked hakes and also in hake stock. We proved that A. simplex allergens are preserved in long-term frozen storage (-20 degrees C +/- 2 degrees C for 11 months) of parasitized hakes. Basophil activation tests have proven the capability of the A. simplex-positive fish extracts to induce allergic symptoms.


Sujet(s)
Allergènes/analyse , Anisakis/immunologie , Antigènes d'helminthe/analyse , Poissons/parasitologie , Manipulation des aliments , Produits de la mer/analyse , Produits de la mer/parasitologie , Allergènes/immunologie , Allergènes/isolement et purification , Animaux , Anisakis/isolement et purification , Antigènes CD/métabolisme , Antigènes d'helminthe/immunologie , Antigènes d'helminthe/isolement et purification , Granulocytes basophiles/immunologie , Granulocytes basophiles/métabolisme , Bivalvia/parasitologie , Produits de la pêche/effets indésirables , Produits de la pêche/analyse , Produits de la pêche/parasitologie , Poissons/croissance et développement , Hypersensibilité alimentaire/sang , Hypersensibilité alimentaire/diétothérapie , Hypersensibilité alimentaire/immunologie , Hypersensibilité alimentaire/parasitologie , Contrôle des aliments/méthodes , Parasitologie alimentaire , Protéines d'helminthes/analyse , Protéines d'helminthes/immunologie , Protéines d'helminthes/isolement et purification , Humains , Immunoglobuline E/immunologie , Limite de détection , Muscles/composition chimique , Muscles/parasitologie , Penaeidae/parasitologie , Glycoprotéines de membrane plaquettaire/métabolisme , Produits de la mer/effets indésirables , Fruits de mer/effets indésirables , Fruits de mer/analyse , Fruits de mer/parasitologie , Température , Antigène CD63 , Extraits tissulaires/effets indésirables , Extraits tissulaires/composition chimique , Extraits tissulaires/immunologie
20.
J Food Prot ; 73(1): 62-8, 2010 Jan.
Article de Anglais | MEDLINE | ID: mdl-20051205

RÉSUMÉ

Heat treatments (40 to 94 degrees Celsius, 30 s to 60 min) were applied to different batches of Anisakis simplex L3 larvae isolated from hake ovaries and viscera to study the effect of heat on the viability of the larvae measured as mobility, emission of fluorescence under UV light, and changes in color after staining with specific dyes, and on A. simplex antigenic proteins. The aim was to determine the lowest time-temperature conditions needed to kill the larvae to avoid anisakiasis in consumers, and to evaluate whether high temperature modifies the antigenicity of A. simplex extracts. Heating at 60 degrees Celsius for 10 min (recommended by some authors) was considered unsafe, as differences in viability between batches were found, with some larvae presenting spontaneous movements in one batch. At higher temperatures (> or = 70 degrees Celsius for > or = 1 min), no movement of the larvae was observed. Antigenic protein Ani s 4 and A. simplex crude antigens were detected in the larvae heated at 94 + or - 1 degrees Celsius for 3 min. This indicates that allergic symptoms could be provoked in previously sensitized consumers, even if the larvae were killed by heat treatment.


Sujet(s)
Anisakis/pathogénicité , Antigènes d'helminthe/immunologie , Manipulation des aliments/méthodes , Gadiformes/parasitologie , Température élevée , Produits de la mer/parasitologie , Allergènes/immunologie , Animaux , Anisakis/croissance et développement , Anisakis/ultrastructure , Sécurité des produits de consommation , Contamination des aliments/prévention et contrôle , Parasitologie alimentaire , Larve , Microscopie électronique à balayage , Facteurs temps
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