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2.
Int J Cosmet Sci ; 33(2): 144-9, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-20646082

RESUMEN

Conspicuous facial pores are one type of serious aesthetic defects for many women. However, the mechanism(s) that underlie the conspicuousness of facial pores remains unclear. We previously characterized the epidermal architecture around facial pores that correlates with the appearance of those pores in various ethnic groups including Japanese. The goal of this study was to evaluate the possible relationships between facial pore size, the severity of impairment of epidermal architecture around facial pores and sebum output levels to investigate the possible role of IGF-1 in the pathogenesis of conspicuous facial pores. The subjects consisted of 38 healthy Japanese women (aged 22-41 years). IGF-1 was measured using immunoradiometric assay. Surface replicas were collected to compare pore sizes of cheek skin and horizontal cross-section images of cheek skin were obtained non-invasively from the same subjects using in vivo confocal laser scanning microscopy and the severity of impairment of epidermal architecture around facial pores was determined. The skin surface lipids of each subject were collected from their cheeks and lipid classes were determined using gas chromatography/flame ionization detection. The serum level of IGF-1 correlated significantly with total pore area (R = 0.36, P < 0.05), with the severity of impairment of epidermal architecture around facial pores (R = 0.43, P < 0.05) and with sebum output levels (R = 0.41, P < 0.01). The sebum output levels correlated with total pore area (R = 0.32, P < 0.05). Our study found that serum levels of IGF-1 are correlated with facial skin characteristics including facial pore size and with the severity of impairment of epidermal architecture around facial pores.


Asunto(s)
Cara/anatomía & histología , Factor I del Crecimiento Similar a la Insulina/metabolismo , Sebo/metabolismo , Piel/anatomía & histología , Adulto , Epidermis/anatomía & histología , Epidermis/química , Epidermis/metabolismo , Femenino , Cromatografía de Gases y Espectrometría de Masas , Humanos , Microscopía Confocal , Sebo/química , Piel/metabolismo , Estadísticas no Paramétricas , Grabación en Video , Adulto Joven
3.
Gene Ther ; 14(8): 648-56, 2007 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-17268532

RESUMEN

Pseudotyping lentiviral vector with other viral surface proteins could be applied for treating genetic anomalies in human skin. In this study, the modification of HIV vector tropism by pseudotyping with the envelope glycoprotein from vesicular stomatitis virus (VSV), the Zaire Ebola (EboZ) virus, murine leukemia virus (MuLV), lymphocytic choriomeningitis virus (LCMV), Rabies or the rabies-related Mokola virus encoding LacZ as a reporter gene was evaluated qualitatively and quantitatively in human skin xenografts. High transgene expression was detected in dermal fibroblasts transduced with VSV-G-, EboZ- or MuLV-pseudotyped HIV vector with tissue irregularities in the dermal compartments following repeated injections of EboZ- or LCMV-pseudotyped vectors. Four weeks after transduction, double-labeling immunofluorescence of beta-galactosidase and involucrin or integrin beta1 demonstrated that VSV-G-, EboZ- or MuLV-pseudotyped HIV vector effectively targeted quiescent epidermal stem cells which underwent terminal differentiation resulting in transgene expression in their progenies. Among the six different pseudotyped HIV-based vectors evaluated, VSV-G-pseudotyped vector was found to be the most efficient viral glycoprotein for cutaneous transduction as demonstrated by the highest level of beta-galactosidase expression and genome copy number evaluated by TaqMan PCR.


Asunto(s)
Dermis/metabolismo , Terapia Genética/métodos , Vectores Genéticos/administración & dosificación , VIH/genética , Transducción Genética/métodos , Proteínas del Envoltorio Viral/genética , Animales , Ebolavirus/genética , Escherichia coli/enzimología , Expresión Génica , Vectores Genéticos/genética , Humanos , Inmunohistoquímica , Virus de la Leucemia Murina/genética , Virus de la Coriomeningitis Linfocítica/genética , Ratones , Ratones Desnudos , Microscopía Confocal , Virus de la Rabia/genética , Retroviridae/genética , Enfermedades de la Piel/metabolismo , Enfermedades de la Piel/terapia , Transgenes , Trasplante Heterólogo , Virus de la Estomatitis Vesicular Indiana/genética , beta-Galactosidasa/genética
4.
Br J Dermatol ; 151(5): 984-94, 2004 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-15541076

RESUMEN

BACKGROUND: Wrinkling and sagging of the skin during photoageing is physiologically associated with diminished elasticity, which can be attributed to increased fibroblast-derived elastase activity. This degrades the dermal elastic fibres needed to maintain the three-dimensional structure of the skin. We previously reported that ovariectomy accelerates ultraviolet (UV)B-induced wrinkle formation in rat hind limb skin by altering the three-dimensional structure of elastic fibres. OBJECTIVES: In this study, we used hairless mice to assess the effects of ovariectomy with or without chronic UVA or UVB radiation on sagging and wrinkling of skin, on the elasticity of skin, as well as on matrix metalloproteinase activities in the skin. METHODS: Ovariectomies or sham operations were performed on 6-week-old female ICR/HR hairless mice. RESULTS: Even in the ovariectomy group without UV irradiation, the skin elasticity was significantly decreased during the 3-13 weeks after ovariectomy, which was accompanied by a significant increase in elastase activity in the skin. After UVA or UVB irradiation, skin elasticity was significantly decreased to a greater extent in the ovariectomy group than in the sham operation group, and this was accompanied by a reciprocal increase in elastase activity but not in the activities of collagenases I or IV in the skin. Consistent with the decreased skin elasticity, UVA irradiation for 12 weeks elicited more marked sagging in the ovariectomy group than in the sham operation group. UVB irradiation for 12 weeks also induced more marked wrinkle formation in the ovariectomy group than in the sham operation group. CONCLUSIONS: These results suggest that ovariectomy alone is sufficient to accelerate skin ageing and to increase UV sensitivity, which results in the further deterioration of the skin and photoageing, and may account for the accelerated skin ageing seen in postmenopausal women.


Asunto(s)
Ovariectomía , Envejecimiento de la Piel/fisiología , Rayos Ultravioleta/efectos adversos , Animales , Elasticidad/efectos de la radiación , Estrógenos/fisiología , Femenino , Procesamiento de Imagen Asistido por Computador , Ratones , Ratones Pelados , Ratones Endogámicos ICR , Elastasa Pancreática/metabolismo , Piel/enzimología , Piel/efectos de la radiación , Envejecimiento de la Piel/efectos de la radiación
5.
Br J Cancer ; 91(9): 1711-7, 2004 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-15494715

RESUMEN

T-cell infiltration into human cancer tissues can be a manifestation of host immune responses to cancer cells. The present study was undertaken to explore the clinicopathological significance of intraepithelial CD8(+) T cells using 371 consecutively sampled human colorectal carcinomas. By univariate analysis, we noted that the survival curves by intraepithelial CD8(+) T cells became separated only after 1 to 2 years postoperation. Multivariate analyses revealed that the beneficial effect of this factor becomes significant only after a longer (more than 2 year), but not after a shorter (less than 2 year) follow-up period. Furthermore, the number of intraepithelial CD8(+) T cells was significantly higher in patients alive for more than 5 years than in patients who either died of cancer after a curative operation or patients who underwent a noncurative operation. Patients' cancer-specific death long after a curative operation is thought to be caused by the growth of micrometastases in other organs or near the primary sites. The effects of intraepithelial CD8(+) T cells, therefore, may be mediated by suppression of micrometastasis, rather than suppression of growth in the primary tumour. In conclusion, our data support a hypothesis on the presence of systemic immunosurveillance against micrometastasis of cancer cells.


Asunto(s)
Linfocitos T CD8-positivos/patología , Carcinoma in Situ/inmunología , Neoplasias Colorrectales/inmunología , Metástasis Linfática/patología , Linfocitos Infiltrantes de Tumor/patología , Adulto , Anciano , Anciano de 80 o más Años , Linfocitos T CD8-positivos/inmunología , Carcinoma in Situ/cirugía , Neoplasias Colorrectales/cirugía , Femenino , Estudios de Seguimiento , Humanos , Recuento de Linfocitos , Linfocitos Infiltrantes de Tumor/inmunología , Masculino , Persona de Mediana Edad , Invasividad Neoplásica/patología , Pronóstico , Estudios Retrospectivos , Tasa de Supervivencia
6.
Hinyokika Kiyo ; 47(8): 543-6, 2001 Aug.
Artículo en Japonés | MEDLINE | ID: mdl-11579592

RESUMEN

We clinicopathologically reviewed 54 cases (40 males and 14 females) of renal pelvic and ureteral cancer examined between 1983 and 1998, in order to determine the impact of prognostic factors. Follow-up ranged from 2 to 173 months (mean, 45.6 months). The age of the patients ranged from 39 to 88 years (mean, 68.9 years). The 1, 3 and 5-year cause-specific survival rates (Kaplan-Meier's method) for all of the patients were 74.6%, 58.4% and 54.5%, respectively. According to univariate analysis, a high grade and high stage of tumor, the presence of lymphatic invasion and positive regional lymph nodes indicated a significantly poor prognosis. On the other hand, multivariate analysis using Cox proportional hazards regression revealed the presence of lymphatic invasion as the most significant predictor of survival. Therefore, patients with lymphatic invasion have a poor prognosis, and the development of effective adjuvant therapy is needed to improve the outcome in these patients.


Asunto(s)
Neoplasias Renales/mortalidad , Pelvis Renal , Neoplasias Ureterales/mortalidad , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Pronóstico , Modelos de Riesgos Proporcionales , Tasa de Supervivencia
7.
Hinyokika Kiyo ; 47(6): 425-7, 2001 Jun.
Artículo en Japonés | MEDLINE | ID: mdl-11496400

RESUMEN

A 19-year-old male patient was admitted with the chief complaint of left abdominal pain. After receiving a mild punch in the abdomen during boxing exercises, he had severe abdominal pain and was brought to an emergency room. Since abdominal CT scanning revealed the retention of massive fluid in the retroperitoneum, hydronephrotic rupture due to the trauma was diagnosed and nephrectomy was performed. The removed kidney was filled as a result of urinary retention, and congenital hydronephrosis accompanied by the ureteropelvic junction obstruction was macroscopically and pathohistologically diagnosed. Postoperative course was favorable and the patient was discharged on the 10th hospital day.


Asunto(s)
Hidronefrosis/congénito , Pelvis Renal/lesiones , Adulto , Boxeo/lesiones , Humanos , Hidronefrosis/diagnóstico , Hidronefrosis/cirugía , Masculino , Nefrectomía , Rotura , Resultado del Tratamiento
8.
Biol Pharm Bull ; 24(6): 688-92, 2001 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-11411560

RESUMEN

Endothelin-1 (ET-1) has been reported to be expressed in human epidermis at both the gene and protein levels. ET-1 plays a pivotal role in ultraviolet B (UVB)-induced pigmentation due to its accentuated secretion after UVB irradiation and its function as a mitogen and as a melanogen for human melanocytes. We have recently found that endothelin-converting enzyme (ECE)-1alpha plays a constitutive role in the secretion of ET-1 by human keratinocytes and that an extract of Sanguisorba officinalis L. inhibits ECE activity in human endothelial cells, which predominantly express ECE-1alpha. In this report, to clarify the potential use of this botanical extract as a whitening agent, we examined whether this extract inhibits UVB-induced pigmentation in vivo. When this extract was applied to human keratinocytes after UVB irradiation, secretion of ET-1 by those cells was reduced, and this was accompanied by a concomitant increase in the secretion of inactive precursor Big endothelin-1. When hairless mice were exposed to UVB light and were treated with the extract, it suppressed the induction of ET-1 in the UVB-irradiated epidermis. In the course of UVB-induced pigmentation of brownish guinea pig skin, this extract significantly diminished pigmentation in UVB-exposed areas. These findings indicate that ECE-1alpha in keratinocytes plays a pivotal role in the induction of pigmentation following UVB irradiation and that an extract of S. officinalis, which inhibits ET-1 production in human keratinocytes, is a good ingredient for a whitening agent.


Asunto(s)
Ácido Aspártico Endopeptidasas/antagonistas & inhibidores , Pigmentación/efectos de los fármacos , Pigmentación/efectos de la radiación , Extractos Vegetales/farmacología , Rosales/química , Rayos Ultravioleta , Animales , Células Cultivadas , Endotelina-1/antagonistas & inhibidores , Endotelina-1/metabolismo , Enzimas Convertidoras de Endotelina , Cobayas , Humanos , Queratinocitos/metabolismo , Queratinocitos/efectos de la radiación , Metaloendopeptidasas , Ratones , Ratones Pelados
9.
Photochem Photobiol ; 73(5): 525-31, 2001 May.
Artículo en Inglés | MEDLINE | ID: mdl-11367575

RESUMEN

We have previously reported the formation of wrinkles, a decrease in skin elasticity and a loss in the linearity of dermal elastic fibers in rat hind limb skin irradiated with ultraviolet radiation in wavelength ranging 290-320 nm (UVB) at a suberythemal dose for 6 weeks. Estrogens are considered effective in preventing photoaging in postmenopausal females, but the role of estrogen in the skin remains unclear. In this study we have evaluated the influence of short-term chronic UVB irradiation at a suberythemal dose on the skin of ovariectomized rats. An ovariectomy or a sham operation was performed on each 3 week-old female Sprague-Dawley rat. Starting 1 week after the operation the hind limb skin of each rat was irradiated with UVB at a suberythemal dose (130 mJ/cm2) three times a week for 3 or 6 weeks. Decreases in elasticity and wrinkle formation in the skins of ovariectomized animals were induced more quickly than in the skins of sham-operated animals following UVB irradiation. The linearity of elastic fibers in the ovariectomy group decreased significantly compared with the sham-operation group, but erythema in the ovariectomy group was induced more readily than in the sham-operation group following UVB irradiation. These findings suggest that decreases in the estrogen levels after ovariectomy accelerate photoaging in terms of the morphology and physical properties of the skin surface and the three-dimensional structure of elastic fibers.


Asunto(s)
Estrógenos/fisiología , Ovariectomía , Envejecimiento de la Piel/fisiología , Envejecimiento de la Piel/efectos de la radiación , Animales , Tejido Elástico/efectos de la radiación , Estrógenos/metabolismo , Femenino , Ratas , Ratas Sprague-Dawley , Piel/metabolismo , Piel/efectos de la radiación , Piel/ultraestructura , Rayos Ultravioleta/efectos adversos
10.
J Invest Dermatol ; 116(4): 578-86, 2001 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-11286626

RESUMEN

The interaction of stem cell factor with its receptor, c-kit, is well known to be critical to the survival of melanocytes. Little is known about the role(s) of the stem cell factor/c-kit interaction in epidermal pigmentation, however. To clarify whether the stem cell factor/c-kit signaling has a paracrine role in ultraviolet-B-induced pigmentation, we determined whether the exposure of human keratinocytes, melanocytes, and the epidermis to ultraviolet B light stimulates the expression of stem cell factor or c-kit at the gene and/or protein levels. We further examined whether interrupting the binding of stem cell factor to c-kit by subepidermal injection of a monoclonal antibody to c-kit affects ultraviolet-B-induced pigmentation in brownish guinea pig skin. When human keratinocytes and melanocytes in culture were exposed to ultraviolet B light, transcripts of stem cell factor and c-kit (as assessed by reverse transcription polymerase chain reaction) and expression of those proteins (by enzyme-linked immunosorbent assay and western blotting) increased significantly and peaked at a dose of 20-40 mJ per cm2. In ultraviolet-B-exposed human epidermis, stem cell factor transcripts and protein expression were also markedly enhanced compared with the nonexposed epidermis. Immunohistochemistry with antibodies to stem cell factor revealed an increased staining in the ultraviolet-B-exposed epidermis, which was accompanied by a slight epidermal hyperplasia. In the course of ultraviolet-B-induced pigmentation of brownish guinea pig skin, the subepidermal injection of c-kit inhibitory antibodies completely abolished the induction of pigmentation in the ultraviolet-B-exposed area, and there was no increase in the number of dihydroxyphenylalanine-positive melanocytes. These findings indicate that the stem cell factor/c-kit signaling is critically involved in the biologic mechanism of ultraviolet-B-induced pigmentation.


Asunto(s)
Melanocitos/fisiología , Melanocitos/efectos de la radiación , Comunicación Paracrina , Pigmentación/fisiología , Factor de Células Madre/fisiología , Rayos Ultravioleta , Animales , Anticuerpos/farmacología , Células Cultivadas , Epidermis/metabolismo , Epidermis/efectos de la radiación , Cobayas , Humanos , Inyecciones Subcutáneas , Queratinocitos/metabolismo , Queratinocitos/fisiología , Membranas/metabolismo , Pigmentación/efectos de los fármacos , Pigmentación de la Piel/efectos de los fármacos , Pigmentación de la Piel/efectos de la radiación , Factor de Células Madre/inmunología , Factor de Células Madre/metabolismo
11.
J Dermatol Sci ; 25(2): 164-9, 2001 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-11164713

RESUMEN

In order to investigate the role of cyclin-dependent kinase (CDK) inhibitors in hair growth, we analyzed the expressions of p21(waf1/cip1) and p27(kip1) during the synchronized hair cycle of rat coat. The mRNAs of both p21(waf1/cip1) and p27(kip1) were detected in anagen hair follicles by reverse transcription and polymerase chain reaction and their localization was clearly demonstrated in the upper half portion of the hair bulb and the cortex by in situ hybridization. The dermal tissue containing hair follicles was then excised from the anterior dorsal skin of the 5-12-week-old rats at 0.5 week intervals and the expressions of p21(waf1/cip1) and p27(kip1) were analyzed by northern blot hybridization. The mRNA of both CDK inhibitors was expressed at relatively high levels during anagen than during telogen, a fact which correlated with the mRNA expression levels of hair differentiation markers, type I hair keratin (Ha3) and high sulfur protein B2. These results imply that CDK inhibitors, p21(waf1/cip1) and p27(kip1), are involved in the differentiation of follicular epithelial cells.


Asunto(s)
Proteínas de Ciclo Celular , Quinasas Ciclina-Dependientes/antagonistas & inhibidores , Ciclinas/metabolismo , Inhibidores Enzimáticos/metabolismo , Folículo Piloso/metabolismo , Cabello/fisiología , Proteínas Asociadas a Microtúbulos/metabolismo , Proteínas Supresoras de Tumor , Envejecimiento/metabolismo , Animales , Northern Blotting , Inhibidor p21 de las Quinasas Dependientes de la Ciclina , Inhibidor p27 de las Quinasas Dependientes de la Ciclina , Ciclinas/genética , Hibridación in Situ , Masculino , Proteínas Asociadas a Microtúbulos/genética , ARN Mensajero/metabolismo , Ratas , Ratas Sprague-Dawley , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Distribución Tisular
12.
Microbiol Immunol ; 45(10): 709-15, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11762753

RESUMEN

Recent developments of biotechnology have enabled us to use immunotherapy against certain kinds of tumors in patients. However, it is reasonable to doubt if the immunotherapy can completely aid the rejection of tumors that have escaped from the immune system. In this paper, we propose a new mathematical model of tumor immunity by tumor-specific cytotoxic T lymphocytes (CTLs), since tumor-specific CTLs play an important role in tumor immunity. Using this model, we have mathematically investigated the interactions between immunogenic tumor cells (TCs) and tumor-specific CTLs and evaluated the availability of immunotherapies for tumors. The findings herein demonstrate that three kinds of dynamics of tumor immunity exist: i.e. (1) TCs continue to proliferate with CTLs; (2) TCs are rejected by CTLs; and (3) TCs equilibrate with CTLs, but with little possibility of the equilibrium. The findings also demonstrate that a sufficient increase in CTLs by immunotherapy can aid the rejection of TCs, but an insufficient increase in CTLs by immunotherapy causes only a transient regression of TCs. Clinically the findings mean that increasing tumor-specific CTLs, e.g., by vaccination or adoptive transfer of tumor-specific CTLs expanded ex vivo, can theoretically aid the rejection of TCs.


Asunto(s)
Modelos Inmunológicos , Neoplasias/inmunología , Linfocitos T Citotóxicos/inmunología , Humanos , Inmunoterapia , Matemática , Neoplasias/terapia
13.
Pathol Int ; 50(6): 505-8, 2000 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-10886729

RESUMEN

Mesenchymal tumors of the appendix are very rare. Mesenteric fibromatosis is the most common diagnosis in the case of isolated proliferative fibroblastic lesion found in this region. However, the differential diagnosis between fibromatosis and well-differentiated fibrosarcoma (Grade I) can be difficult in some borderline cases. A rare case of proliferative fibroblastic lesion involving the appendix and mesoappendix is presented, and its origin, diagnosis and differential diagnosis are discussed.


Asunto(s)
Neoplasias del Apéndice/patología , Apéndice/patología , Fibroma/patología , Adulto , Neoplasias del Apéndice/metabolismo , Apéndice/química , Fibroma/metabolismo , Humanos , Inmunohistoquímica , Antígeno Ki-67/análisis , Masculino , Índice Mitótico , Vimentina/análisis
14.
Cancer Res ; 58(16): 3491-4, 1998 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-9721846

RESUMEN

The pathophysiological significance of tumor infiltrating lymphocytes remains controversial. To clarify their role, we performed clinicopathological analysis of CD8+ T cells in 131 cases of human colorectal cancer. CD8+ T cells were classified into three groups by their localization: (a) those infiltrated within cancer cell nests; (b) those distributed in the cancer stroma; and (c) those present along the invasive margin (tumor-host interface). Of these, CD8+ T cells within cancer cell nests were most significantly associated with a better survival of patients by both mono- and multivariate analyses. The impact on survival was similar to that of Dukes' staging. Granzyme B+ cytoplasmic granules were detected in lymphocytes within cancer cell nests, confirming their activated, cytotoxic phenotype. CD8 and Ki-67 double immunohistochemistry confirmed higher proliferative activity of CD8+ T cells within cancer cell nests. Our data suggested that human colorectal cancer tissue was infiltrated by various numbers of T cells that had cytotoxic phenotype, contributing to a better survival of patients. This infiltration of colorectal cancer cell nests by CD8+ T cells could be a novel prognostic factor.


Asunto(s)
Linfocitos T CD8-positivos/clasificación , Neoplasias Colorrectales/patología , Linfocitos Infiltrantes de Tumor/clasificación , Análisis de Varianza , Linfocitos T CD8-positivos/enzimología , Neoplasias Colorrectales/mortalidad , Granzimas , Humanos , Linfocitos Infiltrantes de Tumor/enzimología , Estadificación de Neoplasias , Pronóstico , Serina Endopeptidasas/análisis
15.
Gene ; 208(2): 123-9, 1998 Feb 27.
Artículo en Inglés | MEDLINE | ID: mdl-9524245

RESUMEN

High sulfur proteins are cysteine-rich proteins synthesized during the differentiation of hair matrix cells, and form hair fibers in association with hair keratin intermediate filaments. Rat high sulfur protein B2 genes were isolated after screening of a rat genomic library using the cDNA as a probe. Sequence analysis of a 4 kb fragment revealed two high sulfur protein genes, B2E and B2F. Both genes lacked introns, with B2F being located at 2 kb downstream of B2E. The 5' flanking regions of both genes had TATA and CAAT boxes, and consensus sequences of B2 genes. The upstream region of B2F had possible AP-1 and Sp-1 binding elements. The high sulfur protein B2E and B2F, which have putative 188 and 122 amino acids, respectively, comprised four distinct domains with a characteristic repetitive sequence. In situ hybridization indicated that the mRNA of high sulfur protein B2 was specifically localized in the cortex of the hair shaft, and northern blot analysis indicated that the expression of B2 increased in anagen and decreased in telogen, suggesting that high sulfur protein B2 synthesized in cortical cells during anagen contributes to the production of hair fibers.


Asunto(s)
Cabello/metabolismo , Familia de Multigenes , Biosíntesis de Proteínas , Proteínas/genética , Ratas Sprague-Dawley/genética , Secuencia de Aminoácidos , Animales , Secuencia de Bases , Regulación del Desarrollo de la Expresión Génica , Biblioteca Genómica , Cabello/crecimiento & desarrollo , Humanos , Masculino , Datos de Secuencia Molecular , Especificidad de Órganos , Reacción en Cadena de la Polimerasa , Regiones Promotoras Genéticas , Proteínas/química , Ratas , Alineación de Secuencia , Homología de Secuencia de Aminoácido , Homología de Secuencia de Ácido Nucleico , Ovinos , Piel/crecimiento & desarrollo , Piel/metabolismo , TATA Box
16.
Acta Oncol ; 36(4): 413-20, 1997.
Artículo en Inglés | MEDLINE | ID: mdl-9247103

RESUMEN

Prognostic factors and treatment outcome of 71 patients with non-Hodgkin's lymphoma of Waldeyer's ring were analyzed retrospectively. In univariate analyses, unfavorable prognosis was associated with primary disease in the base of the tongue, stage III-IV diseases, B-symptoms, high-grade histology, T-cell phenotype, elevated serum LDH levels, decreased peripheral blood lymphocyte counts, and negative response on delayed type hypersensitivity skin reactions. Multivariate analysis showed that stage III-IV and T-cell phenotype were significant independent risk factors for death. In stage I-II lymphomas, patients with unilateral large or bilateral cervical lymph node involvement had a poorer prognosis. In stage I-II lymphomas with intermediate or high-grade histology, patients who had received radiotherapy with MTCOP-P chemotherapy (pirarubicin, cyclophosphamide, vincristine, methotrexate with leucovorin rescue, peplomycin, and predonisolone) showed significantly better 5-year disease-free survival rate compared with patients treated with radiotherapy alone.


Asunto(s)
Linfoma no Hodgkin/terapia , Neoplasias Tonsilares/terapia , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Análisis de Varianza , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Terapia Combinada , Supervivencia sin Enfermedad , Femenino , Humanos , Hipersensibilidad Tardía/inmunología , L-Lactato Deshidrogenasa/sangre , Ganglios Linfáticos/patología , Linfoma no Hodgkin/tratamiento farmacológico , Linfoma no Hodgkin/patología , Linfoma no Hodgkin/radioterapia , Linfoma de Células T/patología , Linfopenia/patología , Masculino , Persona de Mediana Edad , Análisis Multivariante , Estadificación de Neoplasias , Fenotipo , Pronóstico , Estudios Retrospectivos , Factores de Riesgo , Neoplasias de la Lengua/patología , Neoplasias de la Lengua/terapia , Neoplasias Tonsilares/tratamiento farmacológico , Neoplasias Tonsilares/patología , Neoplasias Tonsilares/radioterapia , Resultado del Tratamiento
17.
Acta Oncol ; 36(3): 307-11, 1997.
Artículo en Inglés | MEDLINE | ID: mdl-9208902

RESUMEN

Nasal T-cell lymphoma of the LMG type (LMG-NTL) is characterized by progressive, unrelenting ulceration, and necrosis of the nasal cavity and midline facial tissues. The clinical behavior of this tumor in 16 patients is compared with that of a nasal lymphoma of non-LMG-NTL type (non-LMG-NTL) in 8 patients and a paranasal sinus lymphoma (PSL) in 6 patients. All patients had stage I or II disease. Fourteen of the 16 patients with LMG-NTL received chemotherapy before and/or after radiotherapy. Cause-specific 5-year survival rates for patients with LMG-NTL, non-LMG-NTL, and PSL were 22%, 75%, and 67% respectively. Seven patients with LMG-NTL, had complete response, although 3 recurred, whereas it was incomplete in 9 patients. The data indicates that it is desirable to deliver 50 Gy or more to achieve in-field control of LMG-NTL.


Asunto(s)
Granuloma Letal de la Línea Media/radioterapia , Linfoma de Células T/radioterapia , Neoplasias Nasales/radioterapia , Adulto , Anciano , Femenino , Estudios de Seguimiento , Granuloma Letal de la Línea Media/mortalidad , Granuloma Letal de la Línea Media/patología , Humanos , Linfoma de Células T/mortalidad , Linfoma de Células T/patología , Masculino , Persona de Mediana Edad , Neoplasias Nasales/mortalidad , Neoplasias Nasales/patología , Terminología como Asunto
18.
Br J Dermatol ; 137(5): 693-8, 1997 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-9415226

RESUMEN

The mRNA expressions of various growth regulatory molecules in single human anagen hair follicles were analysed by reverse transcription and polymerase chain reaction. Approximately 370 hair follicles were isolated from 20 normal individuals, and 0.90 +/- 0.34 microgram (mean +/- SD) total RNA was extracted per whole hair follicle. The mRNAs of fibroblast growth factor (FGF)-1, FGF-2, FGF-5, FGF-7, transforming growth factor (TGF)-alpha, TGF-beta 1, hepatocyte growth factor, insulin-like growth factor (IGF)-I, tumour suppressor gene p53 and high sulphur protein were detected in most or all of the examined hair follicles per target gene. In contrast, none of the mRNAs of FGF-3, FGF-4, FGF-6, FGF-9 and IGF-II was detected, and those of TGF-beta 2 and TGF-beta 3 were detected in only a limited number of the examined hair follicles. Among cyclin-dependent kinase inhibitors, the mRNAs of p21waf1/cip1 and p27kip1 were expressed in almost all the hair follicles, while those of p15INK4B and p16INK4A were not detected. These results suggest that both positive and negative factors for the proliferation and differentiation of follicular epithelial cells coexist in a human anagen hair follicle.


Asunto(s)
Quinasas Ciclina-Dependientes/antagonistas & inhibidores , Sustancias de Crecimiento/metabolismo , Folículo Piloso/metabolismo , Ciclo Celular , Citocinas/genética , Cartilla de ADN , Electroforesis en Gel de Agar , Regulación de la Expresión Génica , Sustancias de Crecimiento/genética , Folículo Piloso/anatomía & histología , Humanos , Reacción en Cadena de la Polimerasa/métodos , ARN Mensajero/genética , Transcripción Genética
20.
Cell Immunol ; 161(2): 288-94, 1995 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-7697740

RESUMEN

We previously reported the amino acid sequence of the human macrophage chemotactic factor with a molecular weight of 1000 (MCF-1) was WLGREDGSE. In this study we examined the roles of MCF-1 and tumor necrosis factor (TNF) in a guinea pig delayed-type hypersensitivity (DTH) reaction. When macrophage chemotactic activity (MCA) in a skin extract was subjected to gel filtration, only the activity with a molecular weight of 1000 was significantly inhibited by anti-human MCF-1 mAb (7-3 mAb). Both MCA and TNF activity were detected in skin extracts from DTH inflammation sites where the specific antigen was injected. Both activities were produced at the early DTH reaction stage. In contrast, MCF-1 was produced at the late DTH reaction stage. The erythema was suppressed significantly either by anti-guinea pig TNF Ab or by 7-3 mAb, suggesting the roles of these two cytokines in a DTH reaction.


Asunto(s)
Citocinas/análisis , Hipersensibilidad Tardía/inmunología , Factor de Necrosis Tumoral alfa/inmunología , Secuencia de Aminoácidos , Animales , Anticuerpos Monoclonales/inmunología , Factores Quimiotácticos/inmunología , Citocinas/inmunología , Cobayas , Humanos , Hibridomas , Datos de Secuencia Molecular , Piel/inmunología
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