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de Abreu EP, Rocha VB, Queiroz de Melo RF, Pereira LB. Hypotrichosis and Hair Loss on the Occipital Scalp. Cutis 2023; 112:E27-E29. [PMID: 37903390 DOI: 10.12788/cutis.0866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2023]
Affiliation(s)
- Erica Possa de Abreu
- School of Medicine, Dermatology Department, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Vanessa Barreto Rocha
- School of Medicine, Dermatology Department, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Luciana Baptista Pereira
- School of Medicine, Dermatology Department, Federal University of Minas Gerais, Belo Horizonte, Brazil
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Pereira LB, Sobreira NDP, Rocha VB. Case for diagnosis. Ichthyosiform mycosis fungoides. An Bras Dermatol 2022; 97:795-797. [PMID: 36109269 PMCID: PMC9582871 DOI: 10.1016/j.abd.2021.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/27/2021] [Accepted: 10/01/2021] [Indexed: 11/24/2022] Open
Affiliation(s)
- Luciana Baptista Pereira
- Dermatology Service, Faculty of Medicine, Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Natália de Paiva Sobreira
- Dermatology Service, Faculty of Medicine, Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Vanessa Barreto Rocha
- Dermatology Service, Faculty of Medicine, Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Gontijo JRV, Júnior FF, Pereira LB, Pedrosa MS. Trauma-induced acquired reactive perforating collagenosis. An Bras Dermatol 2021; 96:392-393. [PMID: 33840572 PMCID: PMC8178551 DOI: 10.1016/j.abd.2020.06.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 11/27/2022] Open
Affiliation(s)
- João Renato Vianna Gontijo
- Dermatology Service, Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Dermatology Service, Hospital Mater Dei, Belo Horizonte, MG, Brazil.
| | | | - Luciana Baptista Pereira
- Dermatology Service, Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Faculty of Medicine, Universidade Federal de Minas, Belo Horizonte, MG, Brazil
| | - Moisés Salgado Pedrosa
- Patology Service, Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Pereira LB, Valente NYS, Rocha VB. Do you know this syndrome? Ichthyosis associated with neurological condition and alteration of hairs. An Bras Dermatol 2018; 93:135-137. [PMID: 29641717 PMCID: PMC5871382 DOI: 10.1590/abd1806-4841.20187727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 11/02/2017] [Indexed: 11/30/2022] Open
Abstract
Trichothiodystrophy refers to a heterogeneous group of rare genetic diseases that affects neuroectodermal-derived tissues with multisystem involvement. The hallmark of these syndromes is the deficiency of sulfur in hair matrix proteins, leading to short and brittle hair. Few cases of this rare disorder have been published. The authors report a case of trichothiodystrophy in a male infant with ichthyosis, photosensitivity, spastic paraparesis, short stature, and neurologic and psychomotor retardation. Diagnosis was based on clinical and microscopic features of hair samples.
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Affiliation(s)
- Luciana Baptista Pereira
- Department of Dermatology, Hospital das
Clínicas da Faculdade de Medicina da Universidade Federal de Minas Gerais (UFMG)
- Belo Horizonte (MG), Brazil
| | - Neusa Yuriko Sakai Valente
- Department of Dermatology, Hospital das
Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP) - São
Paulo (SP), Brazil
| | - Vanessa Barreto Rocha
- Department of Dermatology, Hospital das
Clínicas da Faculdade de Medicina da Universidade Federal de Minas Gerais (UFMG)
- Belo Horizonte (MG), Brazil
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Rocha VB, Moraes RDA, Pereira LB. Cardiofaciocutaneous syndrome and the dermatologist's contribution to diagnosis. Cutis 2017; 99:E4-E7. [PMID: 28207016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Batista PB, Bertollo EMG, Costa DDS, Eliam L, Cunha KSG, Cunha-Melo JR, Darrigo Junior LG, Geller M, Gianordoli-Nascimento IF, Madeira LG, Mendes HM, Miranda DMD, Mata-Machado NA, Morato EG, Pavarino ÉC, Pereira LB, Rezende NAD, Rodrigues LDO, Sette JBC, Silva CMD, Souza JFD, Souza MLRD, Martins AS, Valadares ER, Vidigal PVT, Waisberg V, Waisberg Y, Rodrigues LOC. Neurofibromatosis: part 2 – clinical management. Arq Neuro-Psiquiatr 2015; 73:531-43. [DOI: 10.1590/0004-282x20150042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 02/20/2015] [Indexed: 11/21/2022]
Abstract
Part 1 of this guideline addressed the differential diagnosis of the neurofibromatoses (NF): neurofibromatosis type 1 (NF1), neurofibromatosis type 2 (NF2) and schwannomatosis (SCH). NF shares some features such as the genetic origin of the neural tumors and cutaneous manifestations, and affects nearly 80 thousand Brazilians. Increasing scientific knowledge on NF has allowed better clinical management and reduced rate of complications and morbidity, resulting in higher quality of life for NF patients. Most medical doctors are able to perform NF diagnosis, but the wide range of clinical manifestations and the inability to predict the onset or severity of new features, consequences, or complications make NF management a real clinical challenge, requiring the support of different specialists for proper treatment and genetic counseling, especially in NF2 and SCH. The present text suggests guidelines for the clinical management of NF, with emphasis on NF1.
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Abstract
Impetigo is a common cutaneous infection that is especially prevalent in children.
Historically, impetigo is caused by either group A β-hemolytic
streptococci or Staphylococcus aureus.
Currently, the most frequently isolated pathogen is S. aureus. This
article discusses the microbiologic and virulence factors of group A β-hemolytic
streptococci and Staphylococcus aureus, clinical characteristics,
complications, as well as the approach to diagnosis and management of impetigo.
Topical agents for impetigo therapy are reviewed.
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Polachini CRN, Spanevello RM, Casali EA, Zanini D, Pereira LB, Martins CC, Baldissareli J, Cardoso AM, Duarte MF, da Costa P, Prado ALC, Schetinger MRC, Morsch VM. Alterations in the cholinesterase and adenosine deaminase activities and inflammation biomarker levels in patients with multiple sclerosis. Neuroscience 2014; 266:266-74. [PMID: 24508813 DOI: 10.1016/j.neuroscience.2014.01.048] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 01/21/2014] [Accepted: 01/25/2014] [Indexed: 12/20/2022]
Abstract
Multiple sclerosis (MS) is one of the main chronic inflammatory diseases of the CNS that cause functional disability in young adults. It has unknown etiology characterized by the infiltration of lymphocytes and macrophages into the brain. The aim of this study was to evaluate the acetylcholinesterase (AChE) activity in lymphocytes and whole blood, as well as butyrylcholinesterase (BChE) and adenosine deaminase (ADA) activities in serum. We also checked the levels of nucleotides, nucleosides, biomarkers of inflammation such as cytokines (interleukin (IL)-1, IL-6, interferon (IFN)-γ, tumor necrosis factor-alpha (TNF-α) and IL-10) and C-reactive protein (CRP) in serum from 29 patients with the relapsing-remitting form of MS (RRMS) and 29 healthy subjects as the control group. Results showed that AChE in lymphocytes and whole blood as well as BChE, and ADA activities in serum were significantly increased in RRMS patients when compared to the control group (P<0.05). In addition, we observed a decrease in ATP levels and a significant increase in the levels of ADP, AMP, adenosine and inosine in serum from RRMS patients in relation to the healthy subjects (P<0.05). Results also demonstrated an increase in the IFN-γ, TNF-α, IL-1, IL-6 and CRP (P<0.05) and a significant decrease in the IL-10 (P<0.0001) in RRMS patients when compared to control. Our results suggest that alterations in the biomarkers of inflammation and hydrolysis of nucleotides and nucleosides may contribute to the understanding of the neurological dysfunction of RRMS patients.
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Affiliation(s)
- C R N Polachini
- Programa de Pós-Graduação em Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - R M Spanevello
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Campus Universitário, Capão do Leão, 96010-900 Pelotas, RS, Brazil
| | - E A Casali
- Universidade Federal do Rio Grande do Sul, Instituto de Ciências Básicas da Saúde, Porto Alegre, 90035-003 Porto Alegre, RS, Brazil
| | - D Zanini
- Programa de Pós-Graduação em Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - L B Pereira
- Programa de Pós-Graduação em Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - C C Martins
- Programa de Pós-Graduação em Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - J Baldissareli
- Programa de Pós-Graduação em Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - A M Cardoso
- Programa de Pós-Graduação em Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - M F Duarte
- Centro de Ciências da Saúde, Universidade Luterana do Brazil, Campus Santa Maria, Santa Maria, RS, Brazil
| | - P da Costa
- Programa de Pós-Graduação em Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - A L C Prado
- Departamento de Fisioterapia e Reabilitação, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Campus Universitário, Camobi, 97105-900 Santa Maria, RS, Brazil
| | - M R C Schetinger
- Programa de Pós-Graduação em Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - V M Morsch
- Programa de Pós-Graduação em Bioquímica Toxicológica, Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
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Pereira AFJR, Pereira LB, Vale ECSD, Tanure LA. Four cases of Muckle-Wells syndrome within the same family. An Bras Dermatol 2011; 85:907-11. [PMID: 21308320 DOI: 10.1590/s0365-05962010000600022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2008] [Accepted: 10/15/2008] [Indexed: 11/22/2022] Open
Abstract
Muckle-Wells syndrome is a rare autosomal dominant disease that belongs to a group of hereditary febrile syndromes. It is characterized by recurrent and self-limited episodes of fever, urticaria, arthralgia, myalgia and conjunctivitis since childhood, which are related to exposure to cold temperatures. Lately, progressive sensorineural hearing loss occurs. Amyloidosis is the main complication and can be found in about 25% of the cases. It has been demonstrated that there is an association with mutations in the NLRP3 gene, which codifies cryopyrin, a protein responsible for regulating the production of proinflammatory cytokines, such as interleukin-1Beta. The authors report four cases of the disease within a family.
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Oliveira MCLAD, Pereira LB, Rodrigues PC, Sampaio KC, Oliveira BMD, Viana MB. Initial cutaneous manifestation of lymphomas in children. An Bras Dermatol 2011; 86:799-802. [PMID: 21987155 DOI: 10.1590/s0365-05962011000400031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2010] [Accepted: 06/07/2010] [Indexed: 05/26/2023] Open
Abstract
Cutaneous lymphomas comprise a heterogeneous group of lymphoproliferative disorders with skin involvement and are classified as a subgroup of non-Hodgkin lymphomas. From 1981 to 2007, 100 children with non-Hodgkin lymphomas were admitted to the Hematology Unit of the Federal University of Minas Gerais Teaching Hospital. In nine of these children, the skin was involved at the onset of the disease. Three patients were classified as having primary cutaneous lymphoma, while in six the disease was systemic with cutaneous involvement. In seven patients, the immunophenotype was T-cell, in one it was B-cell, and in the remaining case the immunophenotype was indefinable. No deaths occurred in any of the children with primary cutaneous lymphoma.
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Baeta IGR, Pereira ACF, Guedes ACM, Pereira LB. Do you know this syndrome? An Bras Dermatol 2011; 86:605-7. [PMID: 21738991 DOI: 10.1590/s0365-05962011000300036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Indexed: 11/22/2022] Open
Abstract
Keratosis linearis with ichthyosis congenita and sclerosing keratoderma (KLICK) syndrome is a rare autosomal recessive skin disorder characterized by the association of diffuse, transgressive palmoplantar keratoderma with sclerodactyly, linear hyperkeratotic plaques generally located in flexures, and congenital ichthyosis. The patient is physically and mentally healthy and has no history of any problems related to teeth, nails, hair or mucous membranes. Treatment is based on the use of topical keratolytics and oral retinoids.
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Affiliation(s)
- Isabela Guimarães Ribeiro Baeta
- Dermatology Outpatient Department, Teaching Hospital of the Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil.
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Pereira LB. A case of mycosis fungoides unilesional. An Bras Dermatol 2011; 86:405; author reply 405. [PMID: 21603842 DOI: 10.1590/s0365-05962011000200042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Pereira LB. [Discussion about the existence of unilesional form of mycosis fungoides]. An Bras Dermatol 2011; 86:404; author reply 404-5. [PMID: 21603841 DOI: 10.1590/s0365-05962011000200040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Abstract
An 8-year-old girl was referred for evaluation of multiple lesions on the neck, axillae, and genitalia. A great number of milia-like lesions were also noticed on the palms and discrete keratotic plugs on the soles. Histopathology from lesions on the neck, axilla, and vulva were consistent with syringoma. On the palms and soles, eccrine ducts cystically dilated filled with proteinaceous material and calcifications were found. Although the nature of palmar and plantar lesions in our patient is uncertain, we think that they should be related to the other syringomas on her skin.
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Gupta DK, Nicoloso FT, Schetinger MRC, Rossato LV, Pereira LB, Castro GY, Srivastava S, Tripathi RD. Antioxidant defense mechanism in hydroponically grown Zea mays seedlings under moderate lead stress. J Hazard Mater 2009; 172:479-84. [PMID: 19625122 DOI: 10.1016/j.jhazmat.2009.06.141] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2009] [Revised: 06/16/2009] [Accepted: 06/25/2009] [Indexed: 05/22/2023]
Abstract
The present study was designed to study the process of stress adaptation in roots and shoot of Zea mays seedlings grown under hydroponic conditions during exposure to lead (Pb) (0-200 microM) for 1-7 d. The alterations in growth and in the level of various biochemical parameters were accessed vis-à-vis Pb accumulation. The accumulation of Pb increased in a concentration-duration-dependent manner, however its translocation from root to shoot was low. At the same time, the level of malondialdehyde (MDA) increased with increasing Pb concentration. However, growth parameters, such as dry weight and root length did not show a significant decline to any of the Pb concentrations. In addition, the level of photosynthetic pigments decreased only upon exposure to high Pb concentrations. These results suggested an alleviation of the stress that was presumably being achieved by antioxidants viz., superoxide dismutase (SOD) and catalase (CAT) as well as ascorbic acid (AsA), which increased linearly with increasing Pb levels and exposure time. However, the level of non-protein thiols (NP-SH) in roots, in general, showed a decline beyond 4d that could be attributed to their consumption for the purpose of Pb detoxification. In conclusion, Zea mays can be used as an indicator species for Pb, and the various antioxidants might play a key role in the detoxification of Pb induced toxic effects.
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Affiliation(s)
- D K Gupta
- Department of Biology, University Federal de Santa Maria, Camobi-97105-900, Santa Maria, RS, Brazil.
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Froes GC, Pereira LB, Rocha VB. [Case for diagnosis. Dyschromatosis symetrica hereditaria]. An Bras Dermatol 2009; 84:425-7. [PMID: 19851678 DOI: 10.1590/s0365-05962009000400017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2009] [Accepted: 05/29/2009] [Indexed: 11/21/2022] Open
Abstract
Dyschromatosis symetrica hereditaria (reticulate acropigmentation of Dohi) is a rare autosomal dominant disease. It starts as hyperpigmented and hypopigmented macules in reticular pattern on the extremities. We present a case of a 13-year old boy that showed hyper and hypopigmented macules distributed on the dorsal aspects of the extremities, freckle-like pigmented macules on the face and periorbital atrophic linear lesions. Differentiation with others reticulate pigmentation manifestations is necessary.
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Pereira LB, Gontijo JRV. Você conhece esta síndrome? An Bras Dermatol 2008. [DOI: 10.1590/s0365-05962008000600014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A síndrome de Urbach-Wiethe, também conhecida como lipoidoproteinose ou hialinose cutânea e mucosa (OMIM 247100), é rara genodermatose de herança autossômica recessiva, de patogênese desconhecida, que se caracteriza pela deposição de material hialino na pele, mucosa oral e órgãos internos. Alterações características incluem a rouquidão, pápulas e nódulos na face, especialmente na borda das pálpebras, cicatrizes varioliformes, espessamento difuso e aspecto amarelado da pele e lesões verrucosas em áreas de atrito.
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Abstract
Trata-se de criança de oito anos, portadora de atrofia na hemiface direita, desde os seis anos. A ressonância magnética do encéfalo evidenciou espessamento cortical e formação de cistos. A hemiatrofia facial progressiva, ou síndrome de Parry-Romberg, mais freqüente nas duas primeiras décadas de vida, caracteriza-se por atrofia unilateral da face, acometendo área inervada por um ou mais ramos do trigêmeo. A relação dessa síndrome com a esclerodermia localizada é discutida.
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Abstract
FUNDAMENTOS - O vitiligo atinge de 0,5 a 4% da população mundial, e 25% dos casos se iniciam antes dos 10 anos. Embora prevalente, estudos epidemiológicos de vitiligo na infância são raros na literatura brasileira. OBJETIVO - Avaliar características clínicas e epidemiológicas do vitiligo na infância. MÉTODO - Realizado estudo descritivo em 73 crianças com vitiligo, atendidas no Ambulatório de Dermatologia Pediátrica do Hospital das Clínicas da Universidade Federal de Minas Gerais. Variáveis como sexo, idades ao início da doença e tratamento, superfície corporal acometida, forma clínica, localização, associação com doenças auto-imunes, história familiar de vitiligo e tratamento inicial foram avaliadas. A análise estatística foi realizada usando freqüências simples e comparação de médias pela análise de variância. RESULTADOS - 60,3% dos pacientes eram do sexo feminino. A média de idade ao início da doença foi 5,7, e a do início do tratamento, sete anos. A superfície corporal acometida foi inferior a 1% em 71,8%, e a forma localizada foi detectada em 76,7% dos casos. A localização mais comum foi o segmento cefálico. O vitiligo em familiares foi observado em 30,1% dos casos. O hipotireoidismo foi detectado em um paciente, e 11% deles relataram a presença de doença auto-imune em familiares. O corticóide tópico foi o tratamento inicial na maioria dos pacientes. CONCLUSÕES - Os achados deste estudo ambulatorial são basicamente semelhantes aos encontrados em estudos realizados em outros países.
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Mazzanti CM, Spanevello RM, Pereira LB, Gonçalves JF, Kaizer R, Corrêa M, Ahmed M, Mazzanti A, Festugatto R, Graça DL, Morsch VM, Schetinger MRC. Acetylcholinesterase Activity in Rats Experimentally Demyelinated with Ethidium Bromide and Treated with Interferon Beta. Neurochem Res 2006; 31:1027-34. [PMID: 16871442 DOI: 10.1007/s11064-006-9112-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/05/2006] [Indexed: 10/24/2022]
Abstract
The ethidium bromide (EB) demyelinating model was associated with interferon beta (IFN-beta) to evaluate acetylcholinesterase (AChE) activity in the striatum (ST), hippocampus (HP), cerebral cortex (CC), cerebellum (CB), hypothalamus (HY), pons (PN) and synaptosomes from the CC. Rats were divided into four groups: I control (saline), II (IFN-beta), III (EB) and IV (EB and IFN-beta). After 7, 15 and 30 days rats (n = 6) were sacrificed, and the brain structures were removed for enzymatic assay. AChE activity was found to vary in all the brain structures in accordance with the day studied (7-15-30 days) (P < 0.05). In the group III, there was an inhibition of the AChE activity in the ST, CB, HY, HP and also in synaptosomes of the CC (P < 0.05). It was observed that IFN-beta per se was capable to significantly inhibit (P < 0.05) AChE activity in the ST, HP, HY and synaptosomes of the CC. Our results suggest that one of the mechanisms of action of IFN-beta is through the inhibition of AChE activity, and EB could be considered an inhibitor of AChE activity by interfering with cholinergic neurotransmission in the different brain regions.
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Affiliation(s)
- C M Mazzanti
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcellos, 2600-Anexo, 90035-003, Porto Alegre, RS, Brazil
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Abstract
A lipodistrofia generalizada congênita (síndrome de Berardinelli-Seip), doença autossômica recessiva, caracteriza-se por escassez do tecido subcutâneo. A falta de tecido adiposo propicia disfunção metabólica dos lípides e carboidratos, resistência periférica à insulina, hipertrigliceridemia e hipermetabolismo. Outros achados são acantose nigricante, acromegalia, hepatomegalia e alterações musculares, ósseas, cardiovasculares e neurológicas. Relata-se o caso de paciente com essa síndrome, cujo diagnóstico foi realizado em um serviço de dermatologia.
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Abstract
Com o conhecimento cada vez maior da angiogênese, as anomalias vasculares foram divididas em tumores e malformações vasculares. As malformações vasculares, objeto deste trabalho, são categorizadas ou pela natureza dos canais vasculares (capilares, arteriais, venosos ou linfáticos), ou pelo tipo de fluxo (alto ou baixo), ou ainda pela distribuição (localizadas ou difusas). Além disso, há as malformações complexas combinadas, nas quais se encaixa a maioria das síndromes vasculares. Os autores apresentam uma revisão do asssunto, discorrendo sobre características clínicas, diagnóstico e tratamento dessas anomalias.
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Affiliation(s)
- Bernardo Gontijo
- Universidade Federal de Minas Gerais; Universidade Federal de Minas Gerais
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26
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Abstract
As novas classificações disponíveis e os modernos recursos diagnósticos por imagem não só permitiram a diferenciação entre os tumores e as malformações vasculares, mas também modificaram de forma substancial a abordagem e o tratamento dessas anomalias. O hemangioma da infância, o mais comum dos tumores vasculares dessa faixa etária e objeto deste trabalho, é revisto do ponto de vista de suas características clínicas e laboratoriais, diagnóstico diferencial e opções terapêuticas. Embora a conduta expectante permaneça como o tratamento de escolha para a maioria dos casos, o julgamento crítico é crucial para o emprego de outras modalidades terapêuticas.
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Abstract
A disceratose congênita é doença hereditária rara, caracterizada pela tríade de pigmentação reticulada da pele, distrofia ungueal e leucoceratose em mucosas. Alterações dentárias, gastrintestinais, geniturinárias, neurológicas, oftalmológicas, pulmonares e esqueléticas associadas têm sido relatadas. A falência medular é a principal causa de morte precoce e também é descrita predisposição para doenças malignas. Afeta principalmente homens, e reconhecem-se formas recessivas ligadas ao X, autossômicas dominantes e recessivas. Relata-se o caso de uma criança do sexo masculino, que apresentava a tríade clássica das lesões sem antecedentes familiares. Faz-se revisão da literatura com o objetivo de enfatizar a necessidade do acompanhamento médico multidisciplinar, de modo a permitir diagnóstico precoce das possíveis complicações.
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Lacerda CM, de Melo PSV, Amorim A, Carvalho G, Pereira LB. The left gastric vein as an alternative to portal reconstruction in orthotopic liver transplantation. Transplant Proc 2002; 34:1216-7. [PMID: 12072319 DOI: 10.1016/s0041-1345(02)02743-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- C M Lacerda
- General Surgery Division, Oswaldo Cruz University Hospital (OCUH), University of Pernambuco (UPE), Recife, Brazil.
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Abstract
OBJECTIVE: To check the report of neonatal dermatoses of medical relevance (congenital melanocytic nevus, sebaceous nevus, cafe-au-lait spots, Port-wine stain, ash leaf maculas) in the newborn's file. METHODS: The authors carried out a cross-sectional study in two hospitals in the city of Belo Horizonte. All children born during a consecutive period of 4 months were examined within their 36 first hours of life by a dermatologist who reported all clinically relevant dermatoses (congenital melanocytic nevus, sebaceous nevus, cafeau- lait spots, Port-wine stain, ash leaf macules). Simultaneously, the dermatologist's report was cross checked with the pediatrician's. RESULTS: Neonatal dermatoses of clinical relevance were found in 42 (5.6%) out of 752 children examined during this period. However, the report in the neonate's file could be detected only in 5 (11,9%) out of 42 children. CONCLUSIONS: Clinically relevant dermatoses were underreported in the neonate's file in this study. There is a clear need to stimulate the detection and report of these skin disorders so that parental advice, treatment and genetic counseling can be adequately indicated.
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Affiliation(s)
- L B Pereira
- Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
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Nakano T, Mizokami M, Cao K, Noguchi S, Sata M, Park YM, Kim BS, Oyunsuren T, Pereira LB, Ruzibakiev R, Gurtsevitch V, Hayami M. Lack of anti-GOR antibody among subjects with GB virus C/hepatitis G virus RNA. J Med Virol 1998; 55:129-33. [PMID: 9598933 DOI: 10.1002/(sici)1096-9071(199806)55:2<129::aid-jmv8>3.0.co;2-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Homologies were sought between the putative amino acid sequences of GB virus C/hepatitis G virus (GBV-C/HGV) and the GOR epitope or the liver/kidney microsome-1 (LKM-1) epitope, which share partial sequence identity with the hepatitis C virus (HCV) polyprotein. Anti-GOR antibody (anti-GOR) was assayed among 100 subjects with GBV-C/HGV RNA. Twenty-one and 25 subjects were coinfected with hepatitis B virus (HBV) or HCV, respectively. Homologies were found between the NS5 or E2 polyproteins of GBV-C/HGV and the GOR epitope or the LKM-1 epitope, respectively. These segments of GBV-C/HGV polyproteins sharing identity with the GOR or the LKM-1 epitope were well conserved among three genotypes of GBV-C/HGV. However, only 1 of 55 subjects (1.8%) with GBV-C/HGV RNA, but not with HBV or HCV, was positive for anti-GOR. The positivity for anti-GOR among the group with GBV-C/HGV RNA alone was significantly lower than that among the groups with HCV RNA (P < 0.01 and P < 0.05, respectively). Only 2 of 55 subjects (3.6%) with GBV-C/HGV RNA alone exhibited elevation of alanine aminotransferase. The incidence of liver dysfunction among the group with GBV-C/HGV RNA alone was significantly lower than the incidence among the groups with GBV-C/HGV RNA and hepatitis B surface antigen (HBsAg) or HCV RNA (P< 0.01 and P< 0.01, respectively). These data indicate that 1) there is no association between GBV-C/HGV infection and the presence of anti-GOR, and 2) GBV-C/HGV infection is not related to chronic liver dysfunction.
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Affiliation(s)
- T Nakano
- Second Department of Medicine, Nagoya City University Medical School, Mizuho, Nagoya, Japan
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Abstract
OBJECTIVE The authors describe a case of giant hemangioma treated with interferon alpha-2a and review the role of this drug and other therapeutic modalities in the management of vascular lesions. METHODS A seven month-old child with giant hemangioma and persistent bleeding, anemia and repeated infections was treated with interferon alpha-2a. The drug was administered at the dosage of 3 million units/m(2)/day, subcutaneously, for nine months. RESULTS Response to treatment was considered excellent, with regression of 90% of the lesion, control of bleeding, infection and anemia, and catch-up growth. No untoward effects were observed. CONCLUSION Interferon alpha-2a should be considered as a valid therapeutic option in selected cases of hemangioma in children.
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Affiliation(s)
- C M Silva
- Universidade Federal de Minas Gerais
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32
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Oguisso T, Pereira LB. [Course for auxiliary nursing for the civil servants of the INPS in São Paulo]. Rev Bras Enferm 1968; 21:490-500. [PMID: 5197692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Rocha G, Somogy L, Duarte F, Pereira LB, Barbosa M, Lima EF. [South American blastomycosis. A case of lymphatic-abdominal pseudotumoral type]. Hospital (Rio J) 1966; 69:795-801. [PMID: 5295897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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