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1.
Support Care Cancer ; 30(5): 4497-4504, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35113224

RESUMO

BACKGROUND: Although pre-emptive therapy with oral tetracycline, moisturizer, sunscreen, and topical corticosteroid is useful for preventing acneiform eruption (AfE) due to epidermal growth factor receptor (EGFR) inhibitors, no studies have examined the efficacy of topical corticosteroids themselves, or investigated the optimal potency of corticosteroid for treating facial AfE (FAfE). PATIENTS AND METHODS: Screened patients with RAS wild-type colorectal cancer started pre-emptive therapy with oral minocycline and moisturizer on initiation of cetuximab or panitumumab therapy. Patients who developed grade 1 or 2 FAfE were randomly allocated to two groups: a ranking-down (RD) group that started with a very strong corticosteroid and serially ranked down every 2 weeks unless FAfE exacerbated; and a ranking-up (RU) group that started with a weak corticosteroid and serially ranked up at exacerbation. FAfE grade, patient quality of life, and adverse events (AEs) with topical corticosteroid were evaluated every 2 weeks. The primary endpoint was the total number of times grade 2 or higher FAfE was identified in the central review of the 8-week treatment period. RESULTS: No significant differences in total numbers of grade 2 or higher FAfE or in AEs caused by topical corticosteroids were observed between groups during the 8 weeks. Incidence of grade 2 or higher FAfE tended to be lower in the RD group during the first 2 weeks. CONCLUSION: Considering the long-term care of FAfE, the RU regimen appears suitable and should be considered the standard treatment for FAfE due to EGFR inhibitor therapy. TRIAL REGISTRATION: UMIN Clinical Trials Registry (UMIN000024113).


Assuntos
Erupções Acneiformes , Neoplasias do Colo , Neoplasias Colorretais , Erupções Acneiformes/induzido quimicamente , Erupções Acneiformes/tratamento farmacológico , Erupções Acneiformes/prevenção & controle , Cetuximab/efeitos adversos , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/patologia , Receptores ErbB , Glucocorticoides/uso terapêutico , Humanos , Qualidade de Vida
2.
J Dermatol ; 49(5): 519-524, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35174900

RESUMO

Rosacea is a chronic inflammatory skin disease with facial redness and acne-like papules and pustules. The characteristics and background of rosacea patients in Japan have not been well documented. In this study, we retrospectively collected the medical information of rosacea patients, and investigated the background, complications, exacerbating factors, and status of allergy. Between January 2010 and December 2020, 431 cases were diagnosed as rosacea or rosacea-like dermatitis. We selected 340 patients, in which we could confirm telangiectasia on facial skin. Females and males numbered 266 and 74, respectively. The average age of the first visit was 51.5 years, and the youngest and oldest were 11 and 88 years old. Among 340 cases, 323 had erythematotelangiectatic rosacea, 97 papulopustular rosacea, 20 phymatous rosacea presenting as rhinophyma, and four had symptoms of ocular rosacea. The most common complication was hay fever (93 individuals, 27.4%), and 66 (19.4%) had a medical history of contact dermatitis. Temperature differences (141 individuals, 41.5%) were the most common exacerbating factor followed by sunlight exposure (60 individuals, 17.6%). Seventy-eight individuals received allergen-specific immunoglobulin (Ig)E tests, and IgE for cedar was the most frequently observed (46 individuals, 59.0%). High frequencies of IgE for Dermatophagoides pteronyssinus or D. farinae (33 individuals, 42.3%) and house dust I (31 individuals, 39.7%) suggested that environmental conditions at home would affect rosacea symptoms. Since the facial skin is exposed to environmental stimuli every moment, this retrospective observation suggested the importance of the daily lifestyle guidance as well as medical treatments.


Assuntos
Rosácea , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Eritema , Feminino , Humanos , Imunoglobulina E , Japão/epidemiologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Rosácea/diagnóstico , Rosácea/epidemiologia , Rosácea/terapia , Adulto Jovem
3.
J Dermatol ; 48(7): 1077-1080, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33682955

RESUMO

The most common adverse event of epidermal growth factor receptor inhibitors, used to treat colorectal, non-small cell lung, and head and neck cancers, is acneiform eruption, with a profound effect on treatment continuation. Prolonged acneiform eruptions treated with topical corticosteroids, a standard management, may be associated with secondary bacterial infections, thus there is a need for new treatments. We conducted a multicenter, phase II trial to evaluate the efficacy and safety of topical benzoyl peroxide for epidermal growth factor receptor inhibitor-induced prolonged acneiform eruptions. Patients with colorectal, non-small lung cell, and head and neck cancers who received epidermal growth factor receptor inhibitors for >10 weeks and had persistent acneiform eruptions were eligible. Topical benzoyl peroxide was applied to the affected area of the face once daily for 8 weeks; a clinical evaluation was performed every 2 weeks. The primary endpoint was a change in acneiform eruption severity evaluated between disease onset and end of the treatment period. The quality of life of patients was assessed using the Dermatology Life Quality Index. Of the 14 enrolled patients, 11 completed the trial. The protocol-specified grade of acneiform eruptions from baseline to week 8 improved from 2.0 to 1.0 (P < 0.01). The dermatology life quality index score from baseline to week 8 improved from 3.0 to 1.0 point (P < 0.01). No patient experienced severe adverse events. Overall, topical benzoyl peroxide may be effective for treating and managing prolonged acneiform eruptions induced by epidermal growth factor receptor inhibitors.


Assuntos
Erupções Acneiformes , Antineoplásicos , Erupções Acneiformes/tratamento farmacológico , Antineoplásicos/uso terapêutico , Peróxido de Benzoíla/uso terapêutico , Cetuximab/uso terapêutico , Humanos , Panitumumabe , Qualidade de Vida
4.
Support Care Cancer ; 29(5): 2327-2334, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-32918131

RESUMO

PURPOSE: This FAEISS study was designed to confirm the superior efficacy of reactive topical corticosteroid strategies employing serially ranking-DOWN from very strong steroid levels for the treatment of facial acneiform rash induced by epidermal growth factor receptor (EGFR) inhibitors (EGFRIs), in comparison with strategies employing serially ranking-UP from weak steroid levels. This article reports the primary results of the non-small cell lung cancer (NSCLC) part of the trial. METHODS: Patients with EGFR-mutated advanced NSCLC treated with erlotinib or afatinib were enrolled in the first registration. All patients received preemptive therapy with oral minocycline and heparinoid moisturizer from the initiation of an EGFR inhibitor. Enrolled patients who developed facial acneiform rash within 2 weeks were randomized at second registration to either a ranking-UP (WEAK) group or a ranking-DOWN group. The primary endpoint was incidence of grade ≥ 2 facial acneiform rash over 8 weeks. RESULTS: Fifty-one patients were enrolled at the first registration and received EGFRIs (n = 30 for afatinib, n = 21 for erlotinib). However, 35 patients did not develop facial acneiform rash within 2 weeks; one patient discontinued preemptive treatment. Fifteen patients (29.4%) were enrolled in the second registration; nine were assigned to the WEAK group and six to the DOWN group. There was no significant difference in the incidence of grade ≥ 2 facial acneiform rash between the WEAK group (one patient, twice) and the DOWN group (one patient, twice; p = 0.8417). No patients developed severe facial acneiform rash within 10 weeks. CONCLUSION: In NSCLC patients who received EGFRIs, preemptive therapy of oral minocycline and heparinoid moisturizer reduced facial acneiform rash incidence. TRIAL REGISTRATION: UMIN000024113.


Assuntos
Corticosteroides/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/complicações , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Dermatite/tratamento farmacológico , Dermatite/etiologia , Neoplasias Pulmonares/complicações , Neoplasias Pulmonares/tratamento farmacológico , Inibidores de Proteínas Quinases/efeitos adversos , Administração Tópica , Corticosteroides/farmacologia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
5.
Breast Cancer ; 27(5): 861-870, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32363524

RESUMO

BACKGROUND: Recent improvement of machinery evaluation for the skin changes in various therapies enabled us to evaluate fine changes quantitatively. In this study, we performed evaluation of the changes in radiation dermatitis (RD) using quantitative and qualitative methods, and verified the validity of the conventional qualitative assessment for clinical use. METHODS: Forty-three breast cancer patients received conventional fractionated radiotherapy to whole breast after breast-conserving surgery. Erythema, pigmentation and skin dryness were evaluated qualitatively, and biophysical parameters of RD were measured using a Multi-Display Device MDD4 with a Corneometer for capacitance, a Tewameter for transepidermal water loss (TEWL), a Mexameter for erythema index and melanin index. Measurements were performed periodically until 1 year. RESULTS: The quantitative manifestations developed serially from skin erythema followed by dryness and pigmentation. Quantitative measurements detected the effects of irradiation earlier than that of qualitative indices. However, the grades of the domains in RD by qualitative and quantitative assessment showed similar time courses and peak periods. However, no significant correlation was observed between the skin dryness grade and skin barrier function. In contrast to serial increase in pigmentation grades, melanin index showed initial decrease followed by marked increase with significant correlation with pigmentation grades. CONCLUSION: Subjectively and objectively measured results of RD were almost similar course and peak points through the study. Therefore, validity of the conventional qualitative scoring for RD is confirmed by the present quantitative assessments. Instrumental evaluations revealed the presence of modest inflammatory changes before radiotherapy and long-lasting skin dryness, suggesting indication of intervention for RD.


Assuntos
Neoplasias da Mama/terapia , Eritema/diagnóstico , Radiodermite/diagnóstico , Índice de Gravidade de Doença , Pele/efeitos da radiação , Doença Aguda , Adulto , Idoso , Mama/efeitos da radiação , Mama/cirurgia , Fracionamento da Dose de Radiação , Eritema/etiologia , Feminino , Humanos , Mastectomia Segmentar , Pessoa de Meia-Idade , Estudos Prospectivos , Radiodermite/etiologia , Radioterapia Adjuvante/efeitos adversos , Radioterapia Adjuvante/métodos , Pigmentação da Pele/efeitos da radiação , Perda Insensível de Água/efeitos da radiação
8.
J Dermatol ; 46(12): 1215-1218, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31638283

RESUMO

Hidradenitis suppurativa (HS) is a follicular occlusive inflammatory skin disease that occurs in the axilla, groin, buttocks and vulval region. Control of the intractable inflammation is a primary goal of HS treatments. Benefit of anti-tumor necrosis factor (TNF) antibodies against HS have been reported, and adalimumab has been approved for HS in Europe, the USA and Japan. However, the alternative therapies for anti-TNF antibodies have not been established yet. We experienced a case of HS which developed during the infliximab treatment for Crohn's disease (CD) and was well managed by ustekinumab (UST). We reviewed the articles relating to ustekinumab treatments for HS. Twenty-four HS patients, 16 women and eight men, have been treated with ustekinumab. The average age was 35.7 ± 10.8 years (mean ± SD). All were of Hurley stage II or III. Ten (10/24, 41.6%) had received anti-TNF drugs including infliximab, adalimumab and etanercept prior to UST treatment for HS. Although the initial doses varied from 45 mg s.c. to 390 mg i.v., all cases were treated with 45 or 90 mg s.c. every 8 or 12 weeks at the regular dose, by following the regimen for psoriasis or CD. HS in most of the cases started to improve after 3-5 months of UST initiation, and some achieved complete remission. To our knowledge, our case is the first Asian HS patient improved by UST. Overall, UST is useful for HS and could be an alternative treatment if HS patients do not respond to other medications including anti-TNF drugs.


Assuntos
Fármacos Dermatológicos/uso terapêutico , Hidradenite Supurativa/tratamento farmacológico , Ustekinumab/uso terapêutico , Adulto , Humanos , Masculino
9.
Tohoku J Exp Med ; 247(2): 139-147, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30799328

RESUMO

About 20% of patients with breast cancer are likely to develop breast cancer-related lymphedema (BCRL) following an axillary clearance, and BCRL can be refractory or irreversible to treatment. The aim of this pilot randomized controlled study was to evaluate the effectiveness of a 10-min holistic self-care program for patients with BCRL in Japan. The intervention group (n = 22) practiced the BCRL self-care program including 1) modified Japanese Radio Taiso (Rajio Taiso, national calisthenics in Japan), 2) gentle arm exercises combined with deep breathing, 3) central lymphatic drainage, and 4) skin care using a traditional lymphatic drainage technique daily for 6 months, while the control group (n = 21) received usual care from their hospitals. There was significant group*time interaction in the relative edema volume and relative volume change of the hand, with the intervention group having the better outcome. The intervention group showed significant improvement in transepidermal water loss as well as the mental health component summary score of the SF-8, most of BCRL-related symptoms, self-care time and score, frequencies of exercise, self-lymphatic drainage and skin care, and perceived adherence and effectiveness to self-care, although we were unable to exclude the possibility of the Hawthorne effect. Notably, even in the control group, the self-care was similarly increased, but the significant improvements were detected only in transepidermal water loss on the forearm and upper arm, pain and coldness. In conclusion, the patients who practiced the holistic BCRL self-care for 6 months have shown greater improvement.


Assuntos
Neoplasias da Mama/complicações , Linfedema/etiologia , Autocuidado , Edema/patologia , Feminino , Humanos , Análise de Intenção de Tratamento , Pessoa de Meia-Idade , Projetos Piloto
10.
Intern Med ; 58(12): 1753-1758, 2019 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-30713332

RESUMO

A 66-year-old man was admitted to our hospital because of multiple refractory skin ulcers. Based on his severe systemic arterial calcification and severe calcium-phosphate imbalance due to severe kidney dysfunction, we initially considered calciphylaxis. However, a skin biopsy provided a diagnosis of cholesterol crystal embolization. Although we initiated hemodialysis, steroid treatment, and low-density lipoprotein-cholesterol apheresis, he died of multiple intestinal perforation. An autopsy showed cholesterol crystals occluding multiple organ arterioles. This case suggests that skin ulcers in patients with chronic kidney disease may be an important diagnostic hallmark and may be associated with several serious diseases.


Assuntos
Embolia de Colesterol/complicações , Falência Renal Crônica/complicações , Úlcera Cutânea/etiologia , Corticosteroides/uso terapêutico , Idoso , Remoção de Componentes Sanguíneos/métodos , Embolia de Colesterol/terapia , Humanos , Masculino , Diálise Renal/métodos
11.
Endocr J ; 66(1): 107-114, 2019 Jan 28.
Artigo em Inglês | MEDLINE | ID: mdl-30393272

RESUMO

Soft-drink diabetic ketosis, characterized by acute onset ketosis induced by excessive ingestion of sugar-containing drinks, is often seen in obese, young patients, even with undiagnosed type 2 diabetes. We herein report a 15-year-old obese patient with the apolipoprotein E4/2 phenotype, in whom eruptive xanthomas lead to a diagnosis of soft-drink diabetic ketosis. He developed multiple asymptomatic yellowish papules on the auricles, back, buttocks and the extensor surfaces of the elbows and knees. He initially visited a dermatology clinic and his blood triglyceride and HbA1c levels were found to be 6,490 mg/dL and 16.5%, respectively. He was referred to our hospital for treatment of hyperglycemia and hypertyriglyceridemia. On admission, he had ketonuria and increased blood levels of 3-hydroxybutylate and acetoacetate. He habitually drank 1-3 litters of sweet beverages daily to quench his thirst. Therefore, "soft-drink diabetic ketosis" was diagnosed. Severe hypertriglyceridemia was considered to have been a consequence of impaired insulin action and his apolipoprotein E4/2 phenotype. We treated the diabetic ketosis and hypertriglyceridemia with intensive insulin therapy and a fat-restricted diet. At discharge, he no longer required insulin therapy and his blood glucose levels were controlled with metformin and voglibose. Along with amelioration of the hyperglycemia, triglyceride levels decreased to 247 mg/dL without administration of anti-hyperlipidemia agents. The eruptive xanthoma lesions gradually diminished in size and number and eventually disappeared by 12 months. This case provides an instructive example of eruptive xanthomas serving as a sign of severe dysregulation, not only of lipid, but also glucose, metabolism.


Assuntos
Diabetes Mellitus Tipo 2/diagnóstico , Cetoacidose Diabética/diagnóstico , Hipertrigliceridemia/diagnóstico , Xantomatose/diagnóstico , Ácido 3-Hidroxibutírico/sangue , Acetoacetatos/sangue , Adolescente , Apolipoproteína E2 , Apolipoproteína E4 , Bebidas Gaseificadas/efeitos adversos , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/metabolismo , Cetoacidose Diabética/tratamento farmacológico , Cetoacidose Diabética/etiologia , Cetoacidose Diabética/metabolismo , Dieta com Restrição de Gorduras , Hemoglobinas Glicadas/metabolismo , Humanos , Hipertrigliceridemia/complicações , Hipertrigliceridemia/dietoterapia , Hipertrigliceridemia/metabolismo , Hipoglicemiantes/uso terapêutico , Inositol/análogos & derivados , Inositol/uso terapêutico , Insulina/uso terapêutico , Cetose/diagnóstico , Cetose/etiologia , Masculino , Metformina/uso terapêutico , Obesidade/complicações , Obesidade/metabolismo , Xantomatose/etiologia , Xantomatose/patologia
12.
J Dermatol ; 46(1): 18-25, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30402978

RESUMO

Epidermal growth factor receptor inhibitors (EGFRI), EGFR tyrosine kinase inhibitors (TKI) and anti-EGFR antibodies commonly develop skin toxicities including acneiform eruption (AfE). However, precise skin changes and risk factors for severe AfE are still unclear. The objective of the current study was elucidation of the useful parameters for early and sensitive detection of the skin changes by EGFRI. Transepidermal water loss (TEWL), skin surface hydration, skin surface lipid levels and erythema/melanin index were serially measured for 2 weeks in 19 EGFR-TKI afatinib/erlotinib-treated patients and for 8 weeks in 20 anti-EGFR antibody cetuximab-treated patients. The TEWL levels of the cheek in the patients who developed AfE of grade 2 and more (AfE ≥ Gr2) were already elevated at 7 days after the initiation of afatinib/erlotinib therapy compared with those before therapy as well as in patients with grade 1 or less (AfE ≤ Gr1). In patients treated with cetuximab, the skin surface hydration on the cheek in AfE ≥ Gr2 patients significantly decreased compared with that of AfE ≤ Gr1 patients at the 2nd and 6th week. Baseline skin surface lipid levels and erythema index on the cheek of patients with AfE ≥ Gr2 were significantly higher than those with AfE ≤ Gr1. The small sample size of the present study, especially for logistic regression analysis, is a limitation. In conclusion, instrumental evaluation declared rapid inflammatory changes of the skin by EGFRI and elucidated oily skin as a risk for severe AfE.


Assuntos
Erupções Acneiformes/diagnóstico , Antineoplásicos/efeitos adversos , Neoplasias/tratamento farmacológico , Pele/efeitos dos fármacos , Erupções Acneiformes/induzido quimicamente , Erupções Acneiformes/patologia , Adulto , Afatinib/efeitos adversos , Idoso , Cetuximab/efeitos adversos , Receptores ErbB/antagonistas & inibidores , Cloridrato de Erlotinib/efeitos adversos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Fatores de Risco , Pele/patologia , Perda Insensível de Água/efeitos dos fármacos
13.
J Dermatol ; 44(6): 651-655, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28026050

RESUMO

We report the case of a 42-year-old man with a 5-year history of myelodysplastic syndrome and photosensitivity who had developed painful erythema and blisters on sun-exposed sites. Histological examination of a mildly lichenified lesion on the dorsal finger revealed extensive deposits of a hyaline-like, periodic acid-Schiff-positive material around superficial dermal blood vessels. Laboratory tests showed elevated erythrocyte protoporphyrin and normal urinary porphyrins, suggesting a diagnosis of erythropoietic protoporphyria. Late-onset erythropoietic protoporphyria is rare and is usually associated with an acquired somatic mutation of the ferrochelatase gene secondary to a hematological malignancy such as myelodysplastic syndrome. DNA analysis revealed that our patient has the homozygous IVS3-48C polymorphism that is a low-expression variant of wild-type ferrochelatase allele.


Assuntos
Ferroquelatase/genética , Síndromes Mielodisplásicas/complicações , Transtornos de Fotossensibilidade/etiologia , Protoporfiria Eritropoética/genética , Adulto , Idade de Início , Humanos , Masculino , Protoporfiria Eritropoética/complicações
16.
Case Rep Dermatol ; 4(2): 158-62, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22807901

RESUMO

We report the case of a 55-year-old Japanese patient with granuloma faciale (GF) successfully treated with topical tacrolimus and describe the immunohistochemical study. Immunohistochemical staining revealed that the patient's granuloma contained CD3(+), CD4(+), CD8(+), CD68(+) and CD163(+) cells. Interestingly, these cells contained granulysin(+) T cells and lacked Foxp3(high+) regulatory T cells. In addition, the macrophages were mainly CD163(+), which suggested that the alternatively activated macrophage is one of the main components of GF. In summary, the present data shed light on the granuloma-composing cells and possible mechanisms in the treatment of GF with topical tacrolimus.

17.
Eur J Dermatol ; 20(6): 705-11, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20822971

RESUMO

Few studies have reported on the accuracy of reflectance confocal laser microscopy (RCLM) in observing allergic contact dermatitis in vivo. However, distinction of skin reactions from different reagents is not well understood. We sought to diagnose allergic contact dermatitis by RCLM images and compare with routine, visual patch test (PT) reading for 2 major allergen metals in Japan. The PT was performed on the upper back skin with 5% nickel sulfate (Ni) and 2% cobalt chloride (Co) in eight healthy volunteers and eleven patients. RCLM was used to calculate the thickness of the suprabasal epidermis after visual assessment of PT. Comparison of clinical scoring versus suprabasal epidermal thickness was observed. RCLM images of positive PT showed increased suprabasal epidermal thickness on day 2 (D2), and D3 for Co, whereas there was vesicle formation and an overall increase suprabasal epidermal thickness for Ni. In two of 3 doubtful positive PT to Co, RCLM images presented characteristics of irritant reactions; and one characteristic of a positive reaction. The frequency of Co doubtful-positive PT was higher than that of Ni. We found advantages in using RCLM for visualizing features of allergic contact dermatitis and found it a useful tool as an objective parameter in grading severity and types of PT reaction.


Assuntos
Cobalto/imunologia , Dermatite Alérgica de Contato/diagnóstico , Dermatite Alérgica de Contato/imunologia , Microscopia Confocal , Níquel/imunologia , Testes do Emplastro/métodos , Adulto , Análise de Variância , Feminino , Humanos , Japão , Masculino , Pessoa de Meia-Idade , Análise de Regressão , Estatísticas não Paramétricas
19.
J Cosmet Dermatol ; 5(2): 140-9, 2006 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-17173589

RESUMO

The subtle dryness of the skin surrounding the lesions of atopic dermatitis (AD) is called atopic dry skin or atopic xerosis (AX). AX is more susceptible to the development of AD skin lesions under various environmental stimuli than the clinically normal skin of the people who have or have had or will have AD, which might be called normal atopic skin (NAS) that shows no functional differences as compared to the skin of normal individuals. Routine histopathologic studies of AX that involve the invasive procedures of biopsy are not so helpful in clarifying the underlying pathogenesis. Modern, noninvasive biophysical instrumentation provides rich and quantitative information about various functional aspects of skin. The stratum corneum (SC) of AX reveals not only decreased hydration but also mildly impaired barrier function demonstrable as an increase in transepidermal water loss, elevated pH values, and an increased turnover rate of the SC consisting of thick layers of smaller-sized corneocytes. These data suggest that AX is related to mildly increased epidermal proliferation as a result of the presence of subclinical cutaneous inflammation. Although AX skin does not display any impairment in the recovery of barrier function after physical skin irritation by tape-stripping, it produces a much more severe, long-lasting inflammatory response together with a delay in barrier repair after chemical irritation such as that induced by sodium lauryl sulphate. The SC of AX is biochemically characterized by reduction in the amounts of ceramides, especially ceramide I, sebum lipids, and water-soluble amino acids. None of these changes in SC functions are seen in NAS, which includes not only the normal-looking skin of AD patients long after regression of all active lesions but also of latent atopic skin such as neonates who later develop AD. This suggests that all of the observed functional as well as biochemical abnormalities of AX are a reflection of subclinical inflammation. The presence of the underlying inflammation in AX also differentiates it from senile xerosis. The mildly impaired SC functions of AX can be improved by daily repeated applications of effective moisturizers, i.e., corneotherapy, which is effective in preventing the exacerbating progression of AX to AD resulting from inadvertent scratching of the skin that facilitates the penetration of environmental allergens into the skin. The biophysical confirmation of such efficacy of moisturizers, including cosmetic bases on the mildly impaired barrier function and decreased water-holding capacity of the SC of AX, definitely substantiates the importance of skin care for the cosmetic skin problems that affect every individual in the cold and dry season ranging from late autumn to early spring.


Assuntos
Cosméticos/uso terapêutico , Dermatite Atópica/complicações , Fármacos Dermatológicos/uso terapêutico , Ictiose/fisiopatologia , Ictiose/terapia , Higiene da Pele , Dermatite Atópica/patologia , Dermatite Atópica/fisiopatologia , Humanos , Ictiose/etiologia , Prurido/etiologia , Prurido/fisiopatologia , Prurido/terapia
20.
J Dermatol ; 33(11): 809-12, 2006 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17074000

RESUMO

We report a 65-year-old Japanese woman who presented with a nodule on the nose near the left eye. Histological examination of the totally resected lesion revealed the typical features of necrobiotic xanthogranuloma (NXG). However, her laboratory investigation revealed no paraproteinemia. We believe that the present case represents a cutaneous variant of NXG without accompaniment of paraproteinemia or any systemic involvement.


Assuntos
Granuloma/diagnóstico , Transtornos Necrobióticos/diagnóstico , Dermatopatias/diagnóstico , Xantomatose/diagnóstico , Idoso , Diagnóstico Diferencial , Feminino , Granuloma/patologia , Humanos , Transtornos Necrobióticos/patologia , Nariz/patologia , Paraproteinemias , Dermatopatias/patologia , Xantomatose/patologia
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