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Giralt L, Figueras-Roca M, Eguileor BDL, Romero B, Zarranz-Ventura J, Alforja S, Santiago F, Bolaños J, Lozano F, Dotti-Boada M, Sala-Puigdollers A, Dura P, Izquierdo-Serra J, Valero O, Adan A, Fonollosa A, Molins B. C-reactive protein-complement factor H axis as a biomarker of activity in early and intermediate age-related macular degeneration. Front Immunol 2024; 15:1330913. [PMID: 38633250 PMCID: PMC11021604 DOI: 10.3389/fimmu.2024.1330913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 03/21/2024] [Indexed: 04/19/2024] Open
Abstract
Purpose To determine and compare the serum levels of complement Factor H (FH), monomeric C-Reactive Protein (mCRP) and pentameric C-Reactive protein (pCRP) in patients with age-related macular degeneration (AMD) and to correlate them with clinical, structural and functional parameters. Methods Cross-sectional observational study. One hundred thirty-nine individuals (88 patients and 51 healthy controls) from two referral centers were included and classified into three groups: early or intermediate AMD (n=33), advanced AMD (n=55), and age and sex matched healthy controls (n=51). Serum levels of FH, mCRP, and pCRP were determined and correlated with clinical and imaging parameters. Results Patients with intermediate AMD presented FH levels significantly lower than controls [186.5 (72.1-931.8) µg/mL vs 415.2 (106.1-1962.2) µg/mL; p=0.039] and FH levels <200 µg/mL were associated with the presence of drusen and pigmentary changes in the fundoscopy (p=0.002). While no differences were observed in pCRP and mCRP levels, and mCRP was only detected in less than 15% of the included participants, women had a significantly higher detection rate of mCRP than men (21.0% vs. 3.8%, p=0.045). In addition, the ratio mCRP/FH (log) was significantly lower in the control group compared to intermediate AMD (p=0.031). Visual acuity (p<0.001), macular volume (p<0.001), and foveal thickness (p=0.034) were significantly lower in the advanced AMD group, and choroidal thickness was significantly lower in advanced AMD compared to early/intermediate AMD (p=0.023). Conclusion Intermediate AMD was associated in our cohort with decreased serum FH levels together with increased serum mCRP/FH ratio. All these objective serum biomarkers may suggest an underlying systemic inflammatory process in early/intermediate AMD patients.
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Affiliation(s)
- Lena Giralt
- Institut Clínic d’Oftalmologia (ICOF), Hospital Clínic, Barcelona, Spain
- Department of Ophthalmology, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country, Barakaldo, Spain
| | - Marc Figueras-Roca
- Institut Clínic d’Oftalmologia (ICOF), Hospital Clínic, Barcelona, Spain
- Group of Ocular Inflammation: Clinical and Experimental Studies, Institut d’Investigacions Biomèdiques Agustí Pi I Sunyer (IDIBAPS), Barcelona, Spain
| | - Beatriz De Luis Eguileor
- Department of Ophthalmology, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country, Barakaldo, Spain
| | - Barbara Romero
- Institut Clínic d’Oftalmologia (ICOF), Hospital Clínic, Barcelona, Spain
| | - Javier Zarranz-Ventura
- Institut Clínic d’Oftalmologia (ICOF), Hospital Clínic, Barcelona, Spain
- Group of Ocular Inflammation: Clinical and Experimental Studies, Institut d’Investigacions Biomèdiques Agustí Pi I Sunyer (IDIBAPS), Barcelona, Spain
| | - Socorro Alforja
- Institut Clínic d’Oftalmologia (ICOF), Hospital Clínic, Barcelona, Spain
- Group of Ocular Inflammation: Clinical and Experimental Studies, Institut d’Investigacions Biomèdiques Agustí Pi I Sunyer (IDIBAPS), Barcelona, Spain
| | - Francisca Santiago
- Servei d’Immunologia, Centre de Diagnostic Biomèdic, Hospital Clínic Barcelona, Barcelona, Spain
| | - Jennifer Bolaños
- Servei d’Immunologia, Centre de Diagnostic Biomèdic, Hospital Clínic Barcelona, Barcelona, Spain
| | - Francisco Lozano
- Servei d’Immunologia, Centre de Diagnostic Biomèdic, Hospital Clínic Barcelona, Barcelona, Spain
- Group of Immunoreceptors of the Innate and Adaptive Systems, Institut d’Investigacions Biomèdiques Agustí Pi I Sunyer (IDIBAPS), Barcelona, Spain
- Departament de Biomedicina, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain
| | - Marina Dotti-Boada
- Institut Clínic d’Oftalmologia (ICOF), Hospital Clínic, Barcelona, Spain
| | - Anna Sala-Puigdollers
- Institut Clínic d’Oftalmologia (ICOF), Hospital Clínic, Barcelona, Spain
- Group of Ocular Inflammation: Clinical and Experimental Studies, Institut d’Investigacions Biomèdiques Agustí Pi I Sunyer (IDIBAPS), Barcelona, Spain
| | - Paula Dura
- Department of Ophthalmology, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country, Barakaldo, Spain
| | | | - Oliver Valero
- Servei d’Estadística, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Alfredo Adan
- Institut Clínic d’Oftalmologia (ICOF), Hospital Clínic, Barcelona, Spain
- Group of Ocular Inflammation: Clinical and Experimental Studies, Institut d’Investigacions Biomèdiques Agustí Pi I Sunyer (IDIBAPS), Barcelona, Spain
| | - Alex Fonollosa
- Department of Ophthalmology, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country, Barakaldo, Spain
- Department of Retina, Instituto Oftalmológico Bilbao, Bilbao, Spain
| | - Blanca Molins
- Group of Ocular Inflammation: Clinical and Experimental Studies, Institut d’Investigacions Biomèdiques Agustí Pi I Sunyer (IDIBAPS), Barcelona, Spain
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Basset J, Diab Y, Santiago F, Azulay L, Cordoro K, Zhang A, Watanabe F, Kirkorian A, Frascari F, Siegel D, Bourrat E, Howard R, Hovnanian A. 846 A new case series of olmsted syndrome subjects confirms EGFR activation and long term efficacity of oral erlotinib with acceptable tolerance. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.860] [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: 10/17/2022]
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3
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Torres T, Paiva-Lopes MJ, Gonçalo M, Claro C, Oliveira M, Gomes J, Vieira AP, Amoedo P, Alpalhão M, Nogueira M, Santiago F, Henrique M, Amaro C, Esteves T, Alves J, Cerejeira D, Mendes-Bastos P, Pestana M, Ramos L, Rocha J, Carvalho R, Teixeira L, Selores M, Mota A, Filipe P. Dupilumab for atopic dermatitis: a real-world portuguese multicenter retrospective study. J DERMATOL TREAT 2022; 33:2554-2559. [PMID: 35083945 DOI: 10.1080/09546634.2022.2035309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Introduction: Atopic dermatitis (AD) is a difficult-to-treat inflammatory skin disease with a high impact on patients' quality of life. Dupilumab, an IL-4 and IL-13 inhibitor, was the first monoclonal antibody approved for the treatment of moderate-to-severe AD and is currently approved in patients aged 6 or older.Methods: This is a nationwide, multicenter, retrospective, 48-week study designed by the Portuguese Group of AD to assess real-world efficacy and safety of dupilumab for the treatment of AD.Results: A total of 169 patients were enrolled, with a mean disease duration of 22.75 (±11.98) years. The percentage of patients achieving an improvement of at least 75% in Eczema Area and Severity Index (EASI) compared to baseline (EASI75 response) at weeks 12 and 48 was 67.6% and 74.1%, respectively. In the same timepoints, 25.0% and 44.1% achieved an EASI90 response. Patient-reported outcome measures also improved throughout the study period. Regarding safety, 32.0% of the patients developed adverse events, with conjunctivitis (26.6%), persistent facial erythema (4.7%), and arthritis/arthralgia (3.6%) as the more frequently reported.Conclusion: Data from real-world populations are crucial to guide clinicians in their daily decisions. This study provides data demonstrating that dupilumab is an effective and safe therapeutic option for AD.
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Affiliation(s)
- T Torres
- Department of Dermatology, Centro Hospitalar Universitário do Porto, Porto, Portugal.,Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
| | - M J Paiva-Lopes
- Department of Dermatology, Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal.,CEDOC, Nova Medical School, Universidade Nova de Lisboa, Lisboa, Portugal
| | - M Gonçalo
- Department of Dermatology, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal.,Clinic of Dermatology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - C Claro
- Department of Dermatology, Hospital de Egas Moniz, Centro Hospitalar Lisboa Ocidental, Lisboa, Portugal
| | - M Oliveira
- Department of Dermatology, Centro Hospitalar Tondela Viseu, Viseu, Portugal
| | - J Gomes
- Department of Dermatology, Hospital de Braga, Braga, Portugal
| | - A P Vieira
- Department of Dermatology, Hospital de Braga, Braga, Portugal
| | - P Amoedo
- Department of Dermatology, Centro Hospitalar Universitário de São João EPE, Porto, Portugal
| | - M Alpalhão
- Department of Dermatology, Centro Hospitalar Universitário Lisboa Norte EPE, Lisbon, Portugal.,Dermatology University Clinic, Faculty of Medicine, University of Lisbon, Lisbon, Portugal.,Dermatology Research Unit, IMM João Lobo Antunes, University of Lisbon, Lisbon, Portugal
| | - M Nogueira
- Department of Dermatology, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - F Santiago
- Department of Dermatology, Centro Hospitalar Leiria-Pombal, Leiria, Portugal
| | - M Henrique
- Department of Dermatology, Centro Hospitalar Leiria-Pombal, Leiria, Portugal
| | - C Amaro
- Department of Dermatology, Hospital de Egas Moniz, Centro Hospitalar Lisboa Ocidental, Lisboa, Portugal
| | - T Esteves
- Department of Dermatology, Hospital Central do Funchal, Madeira, Portugal
| | - J Alves
- Department of Dermatology, Hospital Garcia de Orta, Almada, Portugal
| | - D Cerejeira
- Department of Dermatology, Hospital Garcia de Orta, Almada, Portugal
| | - P Mendes-Bastos
- Dermatology Center, Hospital CUF Descobertas, Lisboa, Portugal
| | - M Pestana
- Department of Dermatology, Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal
| | - L Ramos
- Department of Dermatology, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal
| | - J Rocha
- Department of Dermatology, Hospital de Pedro Hispano, Matosinhos, Portugal
| | - R Carvalho
- Department of Dermatology, Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal.,Nova Medical School, Universidade Nova de Lisboa, Lisboa, Portugal
| | - L Teixeira
- Center for Health Technology and Services Research (CINTESIS), Institute of Biomedical Sciences Abel Salazar, University of Porto (ICBAS.UP), Porto, Portugal
| | - M Selores
- Department of Dermatology, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - A Mota
- Department of Dermatology, Centro Hospitalar Universitário de São João EPE, Porto, Portugal.,Faculty of Medicine, University of Porto, CINTESIS, Porto, Portugal
| | - P Filipe
- Department of Dermatology, Centro Hospitalar Universitário Lisboa Norte EPE, Lisbon, Portugal.,Dermatology University Clinic, Faculty of Medicine, University of Lisbon, Lisbon, Portugal.,Dermatology Research Unit, IMM João Lobo Antunes, University of Lisbon, Lisbon, Portugal
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Basset J, Diab Y, Santiago F, Azulay L, Cordoro K, Zhang A, Kirkorian A, Bradley F, Watanabe F, Siegel D, Bourrat E, Howard R, Hovnanian A. 063 A new case series of Olmsted syndrome subjects confirms EGFR activation and shows remarkable efficacy of targeted systemic EGFR inhibition with acceptable side effects. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.065] [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: 10/20/2022]
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5
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Gomes TF, Santiago F, Guiote V. Pigtail hairs in syphilitic alopecia. J Eur Acad Dermatol Venereol 2021; 35:e472-e473. [PMID: 33783889 DOI: 10.1111/jdv.17255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/10/2021] [Accepted: 03/24/2021] [Indexed: 12/01/2022]
Affiliation(s)
- T F Gomes
- Dermatology Department, Centro Hospitalar de Leiria, Leiria, Portugal
| | - F Santiago
- Dermatology Department, Centro Hospitalar de Leiria, Leiria, Portugal
| | - V Guiote
- Dermatology Department, Centro Hospitalar de Leiria, Leiria, Portugal
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Abstract
Ulcerating and mutilating variant of carpal tunnel syndrome occurs in longstanding cases of untreated disease. Pa- tients present with painless ulcers of the second and third fingers, accompanied with other cutaneous and sensory changes. These patients are often misdiagnosed as having a Raynaud disease or systemic sclerosis. Clinical assessment is the gold standard for the diagnosis of carpal tunnel syndrome, but hand radiography and electromyography help supporting the diagnosis. The authors present two cases of this ulcerating variant of carpal tunnel syndrome.
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Gamarra Y, Molina-López J, Herrera-Quintana L, Vázquez-Lorente H, Castaño-Pérez J, Santiago F, Planells E. SUN-LB647: Pyroglutamic Acidosis by Glutathione Regeneration Blockage in Critical Patients. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32613-5] [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: 10/26/2022]
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Quintavalla M, Santiago F, Bonora S, Restaino S. Optical characterization and adaptive optics correction of polymer adaptive lens aberrations. Appl Opt 2019; 58:158-163. [PMID: 30645524 DOI: 10.1364/ao.58.000158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 11/28/2018] [Indexed: 06/09/2023]
Abstract
Adaptive lenses based on fluid-filled polymer membranes allow for great simplification of optical systems providing large focal length variation and reduction of size, weight, and power consumption. However, aberrations can reduce their optical quality and, for some demanding applications, their correction by means of adaptive optics implies increased complexity, especially if reflective wavefront correctors are used. In this work, we characterize two adaptive lenses in terms of optical power and aberrations. We then correct the gravity-induced aberrations by means of a multiactuator adaptive lens in a closed-loop adaptive optics configuration, with a minimal increase in optical setup complexity. The improvements in the performance of an imaging system are shown.
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Julià M, Consuegra-Fernández M, Guilabert A, Muñoz C, Esteve A, Armiger-Borràs N, Santiago F, Arias M, Romaní J, Ferrándiz C, Carrascosa J, Pedrosa E, Alsina-Gibert M, Lozano F, Mascaró-Galy J. Corrigendum to “Genetically defined variants of toll-like receptors 3, 7 and 9 as phenotype and risk modifier factors for psoriasis” [89 (March (3)) (2018) 301–304]. J Dermatol Sci 2018; 91:342. [DOI: 10.1016/j.jdermsci.2018.03.013] [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: 11/25/2022]
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10
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Julià M, Consuegra-Fernández M, Guilabert A, Muñoz C, Esteve A, Armiger-Borràs N, Santiago F, Arias M, Romaní J, Ferrándiz C, Carrascosa J, Pedrosa E, Alsina-Gibert M, Lozano F, Mascaró-Galy J. Genetically defined variants of toll-like receptors 3, 7 and 9 as phenotype and risk modifier factors for psoriasis. J Dermatol Sci 2018; 89:301-304. [DOI: 10.1016/j.jdermsci.2017.12.004] [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] [Received: 08/11/2017] [Revised: 11/19/2017] [Accepted: 12/11/2017] [Indexed: 10/18/2022]
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Kieselova K, Santiago F, Guiote V, Amado C, Henrique M. Fever, lipodystrophy and cutaneous lesions. Clin Exp Dermatol 2017; 42:939-941. [PMID: 28940565 DOI: 10.1111/ced.13215] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2016] [Indexed: 11/27/2022]
Affiliation(s)
- K Kieselova
- Department of Dermatology, Centro Hospitalar Leiria, Leiria, Portugal
| | - F Santiago
- Department of Dermatology, Centro Hospitalar Leiria, Leiria, Portugal
| | - V Guiote
- Department of Dermatology, Centro Hospitalar Leiria, Leiria, Portugal
| | - C Amado
- Department of Dermatology, Centro Hospitalar Leiria, Leiria, Portugal
| | - M Henrique
- Department of Dermatology, Centro Hospitalar Leiria, Leiria, Portugal
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12
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Kieselova K, Santiago F, Henrique M, Cunha F. Image Gallery: Cutaneous lesions in the external auditory canal causing hearing loss. Br J Dermatol 2017; 176:e119. [PMID: 28581247 DOI: 10.1111/bjd.15397] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K Kieselova
- Department of Dermatology, Centro Hospitalar de Leiria, Leiria, Portugal
| | - F Santiago
- Department of Dermatology, Centro Hospitalar de Leiria, Leiria, Portugal
| | - M Henrique
- Department of Dermatology, Centro Hospitalar de Leiria, Leiria, Portugal
| | - F Cunha
- Department of Pathology, Centro Hospitalar de Leiria, Leiria, Portugal
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Mucientes AE, Poblete FJ, Santiago F, Rodriguez MA. Kinetics and mechanism of ruthenium(III) catalyzed oxidation of ethane-1,2-diol by alkaline hexacyanoferrate(III). ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1997941642] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Walters HM, Pan N, Lehman TJA, Adams A, Kalliolias GD, Zhu YS, Santiago F, Nguyen J, Sitaras L, Cunningham-Rundles S, Walsh TJ, Toussi SS. The impact of disease activity and tumour necrosis factor-α inhibitor therapy on cytokine levels in juvenile idiopathic arthritis. Clin Exp Immunol 2016; 184:308-17. [PMID: 26934060 DOI: 10.1111/cei.12782] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/25/2016] [Indexed: 12/31/2022] Open
Abstract
The aim of this study was to evaluate prospectively cytokine levels and disease activity in juvenile idiopathic arthritis (JIA) patients treated with and without tumour necrosis factor (TNF)-α inhibitors. TNF-α inhibitor-naive JIA subjects were followed prospectively for 6 months. Cytokine levels of TNF-α, interleukin (IL)-1β, IL-6, IL-8, IL-10 and IL-17 were measured at baseline for JIA subjects and healthy controls (HCs). Cytokine levels were then measured at four time-points after initiation of TNF-α inhibition for anti-TNF-α-treated (anti-TNF) JIA subjects, and at two subsequent time-points for other JIA (non-TNF) subjects. JIA disease activity by Childhood Health Assessment Questionnaire (CHAQ) disability index/pain score and physician joint count/global assessment was recorded. Sixteen anti-TNF, 31 non-TNF and 16 HCs were analysed. Among JIA subjects, those with higher baseline disease activity (subsequent anti-TNFs) had higher baseline TNF-α, IL-6 and IL-8 than those with lower disease activity (non-TNFs) (P < 0·05). TNF-α and IL-10 increased, and IL-6 and IL-8 no longer remained significantly higher after TNF-α inhibitor initiation in anti-TNF subjects. Subgroup analysis of etanercept versus adalimumab-treated subjects showed that TNF-α and IL-17 increased significantly in etanercept but not adalimumab-treated subjects, despite clinical improvement in both groups of subjects. JIA subjects with increased disease activity at baseline had higher serum proinflammatory cytokines. TNF-α inhibition resulted in suppression of IL-6 and IL-8 in parallel with clinical improvement in all anti-TNF-treated subjects, but was also associated with elevated TNF-α and IL-17 in etanercept-treated subjects.
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Affiliation(s)
- H M Walters
- Department of Pediatric Rheumatology, Cohen Children's Medical Center, North-Shore-Long Island Jewish Health System, Lake Success, NY
| | - N Pan
- Department of Rheumatology, Hospital for Special Surgery, New York, NY, USA
| | - T J A Lehman
- Department of Rheumatology, Hospital for Special Surgery, New York, NY, USA
| | - A Adams
- Department of Rheumatology, Hospital for Special Surgery, New York, NY, USA
| | - G D Kalliolias
- Department of Rheumatology, Hospital for Special Surgery, New York, NY, USA.,Arthritis and Tissue Degeneration Program, Hospital for Special Surgery, New York, NY, USA.,Department of Medicine, New York, NY, USA
| | - Y S Zhu
- Clinical and Translational Science Center, Weill Cornell Medical College, New York, NY, USA
| | - F Santiago
- Clinical and Translational Science Center, Weill Cornell Medical College, New York, NY, USA
| | - J Nguyen
- Department of Epidemiology and Biostatistics, Hospital for Special Surgery, New York, NY, USA
| | - L Sitaras
- Department of Pediatrics, New York, NY, USA
| | | | - T J Walsh
- Department of Pediatrics, New York, NY, USA.,Department of Medicine, Weill Cornell Medical College/New York Presbyterian Hospital, New York, NY, USA
| | - S S Toussi
- Department of Pediatrics, New York, NY, USA
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Paz G, Maia M, Santiago F, Lima V, Miranda H. Muscle activity of the erector spinae during Pilates isometric exercises on and off Swiss Ball. J Sports Med Phys Fitness 2014; 54:575-580. [PMID: 25270777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND The purpose of this study was to investigate the muscle activity of the Erector spinae (ES) during Pilates isometric exercises on and off Swiss ball. METHODS Fifteen women (22.9±2.1years, 171.7±4.7 cm, 65.7±5.3 kg and 11.2±3.2% of body fat) with previous Pilates experience (1±0.9 years) participated as subjects in this study. In the first test session, the anthropometric data and maximal voluntary contraction (MVC) was measured. In the second test session, three isometric exercises were conducted on and off the Swiss ball: back extension (BE), back extension with elbows flexed (BTF) and back extension with elbows extended (BTE). During all exercises, average integrated electromyography (IEMG) from ES muscle was collected and analyzed. A one-way ANOVA with repeated measures followed by Bonferroni post hoc was adopted to compare the muscle activity (P<0.05). RESULTS ES activity was higher for BT, BTF and BTE on stable surface than on Swiss ball, respectively. Significant differences were observed for the ES activity during BTE exercise when compared to BTF and BT on and off Swiss ball, respectively. CONCLUSION The Swiss ball may not provide a potential effect on ES activity during Pilates isometric exercises with similar posture when compared to stable surfaces. Therefore, the combination of BT, BTF and BTE exercises may be an interesting alternative to provide progressive increases in the ES activity.
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Affiliation(s)
- G Paz
- Federal University of Rio de Janeiro Rio de Janeiro, RJ, Brazil
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Coutinho I, Teixeira V, Gameiro A, Santiago F, Rodrigues L, Tomé R, Vieira R, Brites M, Gonçalo M, Figueiredo A. Cutaneous alternariosis - a case series of an increasing phaeohyphomycosis. J Eur Acad Dermatol Venereol 2014; 29:2053-4. [DOI: 10.1111/jdv.12589] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- I. Coutinho
- Department of Dermatology; Centro Hospitalar e Universitário de Coimbra; Coimbra Portugal
| | - V. Teixeira
- Department of Dermatology; Centro Hospitalar e Universitário de Coimbra; Coimbra Portugal
| | - A. Gameiro
- Department of Dermatology; Centro Hospitalar e Universitário de Coimbra; Coimbra Portugal
| | - F. Santiago
- Department of Dermatology; Centro Hospitalar de Leiria-Pombal; Leiria Portugal
| | - L. Rodrigues
- Department of Nephrology; Centro Hospitalar e Universitário de Coimbra; Coimbra Portugal
| | - R. Tomé
- Department of Pathology; Centro Hospitalar e Universitário de Coimbra; Coimbra Portugal
| | - R. Vieira
- Department of Dermatology; Centro Hospitalar e Universitário de Coimbra; Coimbra Portugal
| | - M.M. Brites
- Department of Dermatology; Centro Hospitalar e Universitário de Coimbra; Coimbra Portugal
| | - M. Gonçalo
- Department of Dermatology; Centro Hospitalar e Universitário de Coimbra; Coimbra Portugal
| | - A. Figueiredo
- Department of Dermatology; Centro Hospitalar e Universitário de Coimbra; Coimbra Portugal
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Gonzalez EA, Mensa A, Villarroel P, Diaz M, Fabregat V, Santiago F, Giné E, Serra-Pages C. Identification of a new HLA-C allele, HLA-C*08:75 in a Caucasian individual. Tissue Antigens 2013; 82:68-69. [PMID: 23745573 DOI: 10.1111/tan.12111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 03/07/2013] [Indexed: 06/02/2023]
Abstract
HLA-C*08:75 differs from C*08:02:01 by a non-synonymous mutation at codon 229 (GAG to AAG) in exon 4.
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Affiliation(s)
- E A Gonzalez
- Servei d'Immunologia, Hospital Clinic, Barcelona, Spain
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Gonzalez EA, Mensa A, Villarroel P, Diaz M, Fabregat V, Santiago F, Bandres E, Serra-Pages C. Identification of a new HLA-C allele, HLA-C*08:76 in a Caucasian individual. ACTA ACUST UNITED AC 2013; 82:69-70. [PMID: 23517135 DOI: 10.1111/tan.12106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 02/25/2013] [Indexed: 11/29/2022]
Abstract
HLA-C*08:76 differs from HLA-C*08:02:01 by one nonsynonymous nucleotide change at the codon 144 (CAG to AAG) in exon 3.
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Affiliation(s)
- E A Gonzalez
- Servei d'Immunologia, Hospital Clinic, Barcelona, Spain
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Peñate Y, Hernández-Machín B, Pérez-Méndez LI, Santiago F, Rosales B, Servitje O, Estrach T, Fernández-Guarino M, Calzado L, Acebo E, Gallardo F, Salar A, Izu R, Ortiz-Romero PL, Pujol RM, Fernández-de-Misa R. Intralesional rituximab in the treatment of indolent primary cutaneous B-cell lymphomas: an epidemiological observational multicentre study. The Spanish Working Group on Cutaneous Lymphoma. Br J Dermatol 2012; 167:174-9. [PMID: 22356294 DOI: 10.1111/j.1365-2133.2012.10902.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Intravenous rituximab is a safe and effective option for the treatment of systemic non-Hodgkin B-cell lymphoma. The effectiveness of intralesional rituximab (ILR) in primary cutaneous B-cell lymphomas (PCBL) has been described in a small number of patients. OBJECTIVES To evaluate the effectiveness, tolerance and adverse effects of ILR in patients with follicle centre (FCL) and marginal zone (MZL) PCBL. METHODS This was an epidemiological observational multicentre study of patients with PCBL treated with ILR. RESULTS Seventeen patients with MZL and 18 with FCL PCBL were included. The median number of lesions treated was two per patient. The treatment regimen used in 74% of the patients was a course of three injections in a single week at 1-month intervals. The dose per lesion and day of treatment was 10 mg in 71% of the patients. The median cumulative dose of rituximab per lesion was 60 mg (range 13-270) and per patient was 150 mg (range 20-360 mg). Complete response (CR) and partial response were achieved in 71% and 23% of patients, respectively. The median time to CR in patients who received 10 mg of ILR per lesion was 8 weeks. Similar response rates were observed in MZL and FCL. Median disease-free survival was 114·1 weeks. No parameters that significantly predicted CR were identified. Adverse reactions were recorded in 19 patients; the most frequent was localized pain at the injection site. Median follow-up was 21 months. CONCLUSIONS Intralesional rituximab is a well-tolerated and effective treatment for FCL and MZL PCBL. It should be considered a useful alternative in patients with recurrent lesions and in which the sequelae of radiotherapy or surgery would be significant.
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Affiliation(s)
- Y Peñate
- Department of Dermatology, Complejo Hospitalario Universitario Insular Materno-Infantil, Gran Canaria, Las Palmas de GC, Spain
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Pereira N, Santiago F, Oliveira H, Figueiredo A. Low-dose UVA1 phototherapy for scleroderma: what benefit can we expect? J Eur Acad Dermatol Venereol 2011; 26:619-26. [DOI: 10.1111/j.1468-3083.2011.04137.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yin MT, Modarresi R, Shane E, Santiago F, Ferris DC, McMahon DJ, Zhang CA, Cremers S, Laurence J. Effects of HIV infection and antiretroviral therapy with ritonavir on induction of osteoclast-like cells in postmenopausal women. Osteoporos Int 2011; 22:1459-68. [PMID: 20683705 PMCID: PMC3118504 DOI: 10.1007/s00198-010-1363-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2010] [Accepted: 07/13/2010] [Indexed: 11/24/2022]
Abstract
SUMMARY Ritonavir (RTV) is a commonly used antiretroviral associated with bone loss. We show that peripheral blood mononuclear cells (PBMCs) from human immunodeficiency virus (HIV)-positive women on RTV are more likely to differentiate into osteoclast-like cells when cultured with their own sera than PBMCs and sera from HIV- women or HIV+ on other antiretrovirals. INTRODUCTION RTV increases differentiation of human adherent PBMCs to functional osteoclasts in vitro, and antiretroviral regimens containing RTV have been associated with low bone mineral density (BMD) and bone loss. METHODS BMD, proresorptive cytokines, bone turnover markers (BTMs), and induction of osteoclast-like cells from adherent PBMCs incubated either with macrophage colony-stimulating factor (MCSF) and receptor activator of nuclear factor κB ligand (RANKL) or with autologous serum were compared in 51 HIV- and 68 HIV+ postmenopausal women. RESULTS BMD was lower, and serum proresorptive cytokines and BTMs were higher in HIV+ versus HIV- women. Differentiation of osteoclast-like cells from adherent PBMCs exposed to either MCSF/RANKL or autologous serum was greater in HIV+ women. Induction of osteoclast-like cells was greater from PBMCs exposed to autologous sera from HIV+ women on RTV-containing versus other regimens (172 ± 14% versus 110 ± 10%, p < 0.001). Serum-based induction of osteoclast-like cells from adherent PBMCs correlated with certain BTMs but not BMD. CONCLUSIONS HIV infection and antiretroviral therapy are associated with higher BTMs and increased differentiation of osteoclast-like cells from adherent PBMCs, especially in women on regimens containing RTV. HIV+ postmenopausal women receiving RTV may be at greater risk for bone loss.
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Affiliation(s)
- M T Yin
- Division of Infectious Diseases, Department of Medicine, Columbia University Medical Center, 630 w168th street, PH8-876, New York, NY 10032, USA.
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Cabral R, Santiago F, Tellechea O. Multiple glomus tumors and segmental neurofibromatosis: there are no coincidences. Dermatol Online J 2011; 17:4. [PMID: 21426870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
Segmental neurofibromatosis is a rare subtype of neurofibromatosis type 1 (NF1). Glomus tumors are uncommon benign tumors. The authors report the association between these two rare conditions, not yet reported.
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Cabral R, Santiago F, Tellechea O. Multiple glomus tumors and segmental neurofibromatosis: There are no coincidences. Dermatol Online J 2011. [DOI: 10.5070/d31c22g647] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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Santiago F, Serra D, Vieira R, Figueiredo A. Incidence and factors associated with recurrence after incomplete excision of basal cell carcinomas: a study of 90 cases. J Eur Acad Dermatol Venereol 2011; 24:1421-4. [PMID: 20384689 DOI: 10.1111/j.1468-3083.2010.03662.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Management of incompletely excised basal cell carcinomas (BCC) remains controversial. OBJECTIVE The aim of this study was to assess the rate and the factors associated with the recurrence of incompletely excised BCC. METHODS In this retrospective monocentric study, data from all surgically excised BCC during 4 years (2000 to 2003) were analysed. RESULTS A total of 947 BCC were excised. Of these, 90 were incompletely excised (9.5%). This group was kept under clinical follow-up for a median period of 62.5 months (range 12-84). Recurrence was confirmed in 29 patients (32.2%). The median interval to recurrence was 12 months (range 1-57). Recurrence of incompletely excised BCC was significantly higher (P < 0.05) in younger patients, in aggressive histological types and in localizations like postauricular and nasogenian folds. CONCLUSION Observation might be an acceptable option in many situations, but for patients with aggressive types of BCC, or with tumours localized in risk areas of the face, immediate re-excision appears to be the treatment of choice. A careful follow-up is indicated for at least 3 years; however, long lasted recurrence should not be underestimated.
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Affiliation(s)
- F Santiago
- Dermatology Department, Coimbra University Hospital, Coimbra, Portugal.
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Abstract
A 56-year-old woman presented with a 3-month history of erythematous plaques covered by scales and limited to the right side of her body. The plaques were arranged along Blaschko's lines with a marked mid-line cutoff. The histopathologic analysis of a skin biopsy in conjunction with the anamnesis allowed the diagnosis of linear psoriasis. Our patient showed a good clinical response to antipsoriatic treatment.
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Affiliation(s)
- Ana Brinca
- Dermatology Department, Coimbra University Hospitals, Coimbra, Portugal
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Ward RL, Santiago F, Hawkins NJ, Coomber D, O'connor T, Todd AV. A rapid PCR ELISA for the detection of activated K-ras in colorectal cancer. Mol Pathol 2010; 48:M273-7. [PMID: 16696021 PMCID: PMC407984 DOI: 10.1136/mp.48.5.m273] [Citation(s) in RCA: 9] [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] [Indexed: 12/24/2022]
Abstract
Aims-To develop a rapid PCR ELISA procedure for the detection of mutations in K-ras in a microtitre plate format, and to evaluate the assay for the detection of these mutations in human colorectal cancer.Methods-An enriched PCR method was used with labelled primers, and PCR product was captured on GCN4 coated immunoassay plates. Detection of biotinylated mutant product was performed by colorimetric assay with streptavidin-horseradish peroxidase. The assay was used to determine K-ras status in a series of 60 human colorectal neoplasms, together with paired normal colonic mucosa. Results from gel electrophoretic analysis were compared with ELISA results.Results-The assay proved reliable in detecting K-ras mutations in DNA extracted from both fresh and paraffin embedded colorectal tumours. ELISA results were comparable with results from gel electrophoresis. Mutations of K-ras were detected in 16 of 48 adenocarcinomas and five of 12 adenomas but no mutations were detected in normal mucosa. There was a highly significant difference (p<0.0005) between optical density values for carcinomas with mutant K-ras and their paired normal data. Adenomas did not show the clear distinction between positive and negative results seen with carcinomas.Conclusions-This assay provides a rapid and reliable means of detecting mutations in codon 12 of the K-ras oncogene. The single tube format colorimetric analysis in microtitre plates and clear discrimination between mutant and wild type genes makes the assay suitable for automation. The occurrence of intermediate results in the case of adenomas provides support for the hypothesis that mutations of K-ras occur early in the course of colorectal carcinogenesis.
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Affiliation(s)
- R L Ward
- Department of Medical Oncology, St Vincent's Hospital, Darlinghurst, NSW 2010, Australia
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Mucientes AE, Santiago F, Carrero A, Rivera C. Natural and Treated Hectorites/Poly(Sodium Acrylate) Hybrids: Synthesis, Characterization, and Properties. Aust J Chem 2010. [DOI: 10.1071/ch09613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Novel hybrids of poly(sodium acrylate) and natural and treated hectorites have been synthesized and characterized by X-ray diffraction, transmission electron microscopy analysis, and FTIR analysis. The thermal stability of these materials was studied. The swelling kinetics obey a Voigt-based equation. The experimental equilibrium water absorbency varies with the clay content and shows a minimum. All the hybrids showed excellent reswelling capability. Water desorption studies demonstrated the existence of ‘free water’ and ‘bound water’ within the polymeric matrix.
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Santiago F, Mucientes A, Talavera B. Synthesis, Characterization and Swelling Behaviour of Poly(sodium acrylate)/Palygorskite Superabsorbent Composites based on Palygorskite and Organo-palygorskite. Journal of Polymer Engineering 2009. [DOI: 10.1515/polyeng.2009.29.7.409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Santiago F, Nakamura R, Castilho L, de Faria E. Abstract: 547 HYPERALPHALIPOPROTEINEMIC INDIVIDUALS HAVE PROTECTIVE MODULATION OF CAROTID INTIMA-MEDIA THICKNESS. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70284-3] [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: 10/20/2022]
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Li C, Wu B, Midwinter R, Beck K, Collinson E, Maghzal G, Cassano C, Santiago F, Khachigian L, Gamble J, Stocker R. Abstract: 81 PROTECTION AGAINST ATHEROSCLEROSIS BY HEME OXYGENASE. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70224-7] [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: 10/20/2022]
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Santiago F, Vieira R, Cordeiro M, Carreira I, Figueiredo A. Late-onset hyperpigmentation: a case with multi-systemic involvement and recombinant X chromosome. J Eur Acad Dermatol Venereol 2009; 24:84-5. [PMID: 19453799 DOI: 10.1111/j.1468-3083.2009.03288.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Santiago F, Kaplan D, Schreiber R, dos Santos J, deFaria E. SIMILARITIES OF HEPATIC LIPASE -514C/T AND CHOLESTERYL ESTER TRANSFER PROTEIN I405V POLYMORPHISMS IN BRAZILIAN HYPERALPHALIPOPROTEINEMICS. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70427-6] [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: 11/26/2022]
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Santiago F, Mucientes AE, Osorio M, Rivera C. Preparation of composites and nanocomposites based on bentonite and poly(sodium acrylate). Effect of amount of bentonite on the swelling behaviour. Eur Polym J 2007. [DOI: 10.1016/j.eurpolymj.2006.07.023] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Santiago F, Bueno P, Olmedo C, Comino A, Hassan L, Ferrón-Celma I, Muffak K, Serradilla M, Mansilla A, Ramia JM, Villar JM, Garrote D, Ramirez A, Ferrón JA. Time course of intraoperative cytokine levels in liver transplant recipients. Transplant Proc 2006; 38:2492-4. [PMID: 17097978 DOI: 10.1016/j.transproceed.2006.08.064] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [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: 02/07/2023]
Abstract
We evaluated the levels of several cytokines (interleukin [IL]-2, IL-4, IL-6, IL-10, tumor necrosis factor [TNF]-alpha, and interferon [IFN]-gamma) in plasma samples obtained before surgical intervention (T0) and during intraoperative liver transplantation: after induction of anesthesia (I-1), 15 minutes of anhepatic phase (I-2), 5 minutes before reperfusion (I-3), 10 minutes after reperfusion (I-4), 20 minutes after reperfusion (I-5), 60 minutes after reperfusion (I-6), and 1 hour after liver transplantation (I-7). Cytokine levels were determined using a technique which combines ELISA technique and flow cytometry. The study was approved by the local clinical research (ethics) committee. Written informed consent was obtained from patients' relatives. Twenty patients (14 men, 6 women) aged 23 to 61 years, recipients of a liver transplantation were studied. The cytokine IL-2 plasma values were maintained during the whole study period, with a slight increase at 15 minutes of anhepatic phase (I-2). IL-4 showed a peak value 20 minutes after reperfusion (I-5). IL-6 increased its plasma value starting at 15 minutes of anhepatic phase (I-2), maintaining high concentrations during the whole intraoperative period. IL-10 increased progressively, reaching a maximum 1 hour after transplantation (I-7). TNF-alpha reached maximum plasma levels 20 minutes after reperfusion (I-5), whereas IFN-gamma showed a peak at 15 minutes of anhepatic phase (I-2). Our results indicate that the anhepatic phase (I-2) is the earliest phase during which proinflammatory and anti-inflammatory cytokines, such as IL-6 and IL-10, respectively, are involved during liver transplantation. We conclude that IL-6 is the first cytokine involved in the inflammatory response during liver transplantation.
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Affiliation(s)
- F Santiago
- Anesthesiology Service, Virgen de las Nieves University Hospital, Granada, Spain
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Poblete FJ, Mucientes AE, Villarreal S, Santiago F, Cabañas B, Gabaldón RE. Oxidation of 2,3-butanediol by alkaline hexacyanoferrate(III) using Ru(III) or Ru(VI) as catalyst. J PHYS ORG CHEM 2006. [DOI: 10.1002/poc.1090] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Santiago F, Mucientes AE, Osorio M, Poblete FJ. Synthesis and swelling behaviour of poly (sodium acrylate)/sepiolite superabsorbent composites and nanocomposites. POLYM INT 2006. [DOI: 10.1002/pi.2016] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Neri Q, Takeuchi T, Santiago F, Leopold P, Rosenwaks Z, Palermo G. Devising a Method To Reprogram Somatic Nuclei for Nuclear Transplantation Procedures. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.1047] [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: 10/25/2022]
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Mucientes AE, Santiago F, Almena MC, Poblete FJ, Rodriguez-Cervantes AM. Kinetic study of the ruthenium(VI)-catalyzed oxidation of benzyl alcohol by alkaline hexacyanoferrate(III). INT J CHEM KINET 2002. [DOI: 10.1002/kin.10071] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Horan T, Mateus S, Beraldo P, Araújo L, Urschel J, Urmenyi E, Santiago F. Forced oscillation technique to evaluate tracheostenosis in patients with neurologic injury. Chest 2001; 120:69-73. [PMID: 11451818 DOI: 10.1378/chest.120.1.69] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [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: 11/01/2022] Open
Abstract
STUDY OBJECTIVES To determine the utility of forced oscillation technique (FOT) for measuring pulmonary resistance and reactance in patients with central nervous system injuries, for detection and follow-up of posttracheostomy tracheal stenosis. DESIGN Case series. SETTING A rehabilitation hospital, Brasilia, Distrito Federal, Brazil. PATIENTS Ten consecutive neurologically impaired patients, who had previously undergone tracheostomies, with tracheostenosis without current tracheostomy or other tracheal lesion. INTERVENTIONS AND MEASUREMENTS FOT evaluations were compared to tracheal diameter before and after bronchoscopic tracheostenosis dilatation procedures. Forced spirometry examinations were also obtained and compared. RESULTS Tracheal stenotic lesions were characterized by marked increase in resistance and reduction in reactance at low frequency and a marked increase in resonance frequency (Rf). Consistent reversal of this pattern with large reductions in total impedance of the respiratory system (Zresp) Rf and resistance at 5 Hz (R 5 Hz) were noted in all patients after each successful dilatation. Diameter of the stenosis was strongly correlated with Rf, Zresp, and R 5 Hz. The change in diameter before and after dilatation was similarly correlated with the changes in FOT values of Rf and Zresp. Spirometry values did not correlate well with the diameter of the tracheal stenosis. CONCLUSION The strong correlation of Rf, Zresp, and R 5 Hz to diameter of tracheostenosis suggests a previously unappreciated role for FOT in the noninvasive detection and follow-up of airway stenosis. This may be especially useful for patients with concomitant neurologic disabilities who are at risk of airway stenosis.
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Affiliation(s)
- T Horan
- Hospital SARAH and University SARAH in Rehabilitation Sciences, Brasília, Distrito Federal, Brazil.
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Castellano P, Gámiz MJ, Bracero F, Santiago F, Soldado L, Solanellas J, Ruiz-Mondéjar A, Esteban F. ["Usual" morbidity of pediatric tonsillectomy: a study of 126 cases]. Acta Otorrinolaringol Esp 2001; 52:390-5. [PMID: 11526645 DOI: 10.1016/s0001-6519(01)78225-8] [Citation(s) in RCA: 3] [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: 10/27/2022]
Abstract
Pediatric tonsillectomy is a common procedure in the ENT practice, usually in a Day-surgery basis. The aim of the present work is to further investigate postoperative morbidity to improve both treatment and quality of assistance. 126 children operated in our Day-surgery unit were included in the study, and a questionnaire with items related to postoperative pain, otalgia, halitosis, vomitig, fever and other aspects was filled by their parents or relatives in charge. Significative pain lasting until the third or fourth day was recorded in half of the cases. At the end of the first week most of the children are improved, although only 55% are eating normally. Vomitting, usually the day of the surgery, is described by one third of cases. In our experience, ambulatory tonsillectomy is a safe procedure with low incidence of complications, which are mild. However, the delay in returning to a normal diet and the relative high incidence of vomiting bring into question the inclusion of tonsillectomy in a Day-Surgery program, making necessary to implement treatment protocols to avoid such problems.
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Affiliation(s)
- P Castellano
- Servicios de Otorrinolaringología de los Hospitales Universitarios Virgen de las Nieves de Granada
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de La Fuente C, Deng L, Santiago F, Arce L, Wang L, Kashanchi F. Gene expression array of HTLV type 1-infected T cells: Up-regulation of transcription factors and cell cycle genes. AIDS Res Hum Retroviruses 2000; 16:1695-700. [PMID: 11080812 DOI: 10.1089/08892220050193164] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.3] [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: 01/16/2023] Open
Abstract
By utilizing a human cDNA expression array blot (588 genes), we have observed overexpression of various transcription factors, cell cycle regulated kinases, and DNA repair genes in HTLV-1-infected T cells. One of the genes of interest, and focus in this study, is the cyclin-dependent kinase inhibitor, p21/waf1. The p21/waf1 transcription and protein is overexpressed in all HTLV-1-infected cell lines tested as well as ATL and HAM/TSP patient samples. While p21/waf1 has been shown to display a selectivity for G(1)/S cyclin/cdk complexes, we have observed p21/waf1 to be complexed with cyclin A/cdk2. Functionally, the association of p21/cyclin A/cdk2 decreased the histone H1 phosphorylation in vitro, as observed in immunoprecipitations followed by kinase assays, as well as affecting other substrates such as the C-terminus of Rb protein involved in c-Abl and HDAC1 regulation. Wild-type, but not a mutant form (M47) of Tax, was found to be able to transactivate the p21/waf1 promoter in a p53-independent manner. We found that the minimal p21/waf1 promoter (-49 to +49 sequence) was activated by Tax and the minimal promoter contained two E2A transcription factor binding sites located between the TATA box and the initiation site. E2A proteins, E12 and E47, as well as a related helix-loop-helix protein, HEB, are all up-regulated in HTLV-1-infected T cells. When using band shift analysis, we found that only the E1 site (overlapping the transcription start site) was a functional DNA binding site. By using a chromatin immunoprecipitation (ChIP) assay, we observed that histone H4, and not histone H3, was acetylated from the endogenous p21/waf1 promoter in vivo, implying that CBP/p300, and not the SAGA complex, was critical in complexing with E2A in up-regulation of p21/waf1 in HTLV-1-infected cells.
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Affiliation(s)
- C de La Fuente
- Department of Biochemistry and Molecular Biology, UMDNJ-New Jersey Medical School, Newark, New Jersey 07103, USA
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de La Fuente C, Santiago F, Chong SY, Deng L, Mayhood T, Fu P, Stein D, Denny T, Coffman F, Azimi N, Mahieux R, Kashanchi F. Overexpression of p21(waf1) in human T-cell lymphotropic virus type 1-infected cells and its association with cyclin A/cdk2. J Virol 2000; 74:7270-83. [PMID: 10906181 PMCID: PMC112248 DOI: 10.1128/jvi.74.16.7270-7283.2000] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Human T-cell lymphotropic virus type 1 (HTLV-1) is associated with adult T-cell leukemia (ATL) and HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). T-cell transformation is mainly due to the actions of the viral phosphoprotein Tax. Tax interacts with multiple transcriptional factors, aiding the transcription of many cellular genes. Here, we report that the cyclin-dependent kinase inhibitor p21/waf1 is overexpressed in all HTLV-1-infected cell lines tested as well as in ATL and HAM/TSP patient samples. Tax was found to be able to transactivate the endogenous p21/waf1 promoter, as detected by RNase protection, as well as activate a series of wild-type and 5'-deletion constructs linked to a luciferase reporter cassette. Wild-type but not a mutant form of Tax (M47) transactivated the p21/waf1 promoter in a p53-independent manner and utilized a minimal promoter that contained E2A and TATA box sequences. The p21/waf1 protein was reproducibly observed to be complexed with cyclin A/cdk2 and not with any other known G(1), S, or G(2)/M cyclins. Functionally, the association of p21/cyclin A/cdk2 decreased histone H1 phosphorylation in vitro, as observed in immunoprecipitations followed by kinase assays, and affected other substrates, such as the C terminus of Rb protein involved in c-Abl and histone deacetylase-1 (HDAC1) regulation. Interestingly, upon the use of a stress signal, such as gamma-irradiation, we found that the p21/cyclin A/cdk2 complex was able to block all known phosphorylation sites on the Rb molecule. Finally, using elutriated cell cycle fractions and a stress signal, we observed that the HTLV-1-infected T cells containing wild-type Tax, which had been in early or mid-G(1) phase prior to gamma-irradiation, arrested in G(1) and did not undergo apoptosis. This may be an important mechanism for an oncogenic virus such as HTLV-1 to stop the host at the G(1)/S boundary and to repair the damaged DNA upon injury, prior to S-phase entry.
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Affiliation(s)
- C de La Fuente
- Department of Biochemistry and Molecular Biology, University of Medicine and Dentistry of New Jersey, New Jersey Medical School, Newark, New Jersey 07103, USA
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Clark E, Santiago F, Deng L, Chong S, de La Fuente C, Wang L, Fu P, Stein D, Denny T, Lanka V, Mozafari F, Okamoto T, Kashanchi F. Loss of G(1)/S checkpoint in human immunodeficiency virus type 1-infected cells is associated with a lack of cyclin-dependent kinase inhibitor p21/Waf1. J Virol 2000; 74:5040-52. [PMID: 10799578 PMCID: PMC110856 DOI: 10.1128/jvi.74.11.5040-5052.2000] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/1999] [Accepted: 02/28/2000] [Indexed: 12/21/2022] Open
Abstract
Productive high-titer infection by human immunodeficiency virus type 1 (HIV-1) requires the activation of target cells. Infection of quiescent peripheral CD4 lymphocytes by HIV-1 results in incomplete, labile reverse transcripts and lack of viral progeny formation. An interplay between Tat and p53 has previously been reported, where Tat inhibited the transcription of the p53 gene, which may aid in the development of AIDS-related malignancies, and p53 expression inhibited HIV-1 long terminal repeat transcription. Here, by using a well-defined and -characterized stress signal, gamma irradiation, we find that upon gamma irradiation, HIV-1-infected cells lose their G(1)/S checkpoints, enter the S phase inappropriately, and eventually apoptose. The loss of the G(1)/S checkpoint is associated with a loss of p21/Waf1 protein and increased activity of a major G(1)/S kinase, namely, cyclin E/cdk2. The p21/Waf1 protein, a known cyclin-dependent kinase inhibitor, interacts with the cdk2/cyclin E complex and inhibits progression of cells into S phase. We find that loss of the G(1)/S checkpoint in HIV-1-infected cells may in part be due to Tat's ability to bind p53 (a known activator of the p21/Waf1 promoter) and sequester its transactivation activity, as seen in both in vivo and in vitro transcription assays. The loss of p21/Waf1 in HIV-1-infected cells was specific to p21/Waf1 and did not occur with other KIP family members, such as p27 (KIP1) and p57 (KIP2). Finally, the advantage of a loss of the G(1)/S checkpoint for HIV-1 per se may be that it pushes the host cell into the S phase, which may then allow subsequent virus-associated processes, such as RNA splicing, transport, translation, and packaging of virion-specific genes, to occur.
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Affiliation(s)
- E Clark
- Department of Biochemistry and Molecular Biology, University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, New Jersey 07103, USA
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Henriques J, André M, Santiago F, Pardal C, Abecassis M, Pina J. [Rhodococcus equi pneumonia in patients with AIDS]. ACTA MEDICA PORT 2000; 13:49-53. [PMID: 11059055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Rhodococus equi infection is frequent in animals, but rare in humans. It usually appears as an opportunistic infection, occurring in clinical settings where a compromise of cellular immunity exists, such as in leukemia, neoplastic or transplanted patients. It is currently considered, as another opportunistic AIDS infection. Sixty six cases of Rhodococus equi pneumonia have been published until March 1996. The differential diagnosis includes TB and Staphyloccocal Pneumonia and is generally an infection which is difficult to treat, often resistant to Betalactamic drugs. Therapeutic options include an association of intracellular active antibiotics. The authors report the first Rhodococus equi pneumonia diagnosed in their Hospital and discuss the main difficulties in the diagnostic and therapeutic approach.
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Affiliation(s)
- J Henriques
- Serviço de Pneumologia 2, Hospital de Pulido Valente, Lisboa
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Santiago F, Clark E, Chong S, Molina C, Mozafari F, Mahieux R, Fujii M, Azimi N, Kashanchi F. Transcriptional up-regulation of the cyclin D2 gene and acquisition of new cyclin-dependent kinase partners in human T-cell leukemia virus type 1-infected cells. J Virol 1999; 73:9917-27. [PMID: 10559304 PMCID: PMC113041 DOI: 10.1128/jvi.73.12.9917-9927.1999] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Human T-cell leukemia virus type 1 (HTLV-1) is the etiologic agent for adult T-cell leukemia/lymphoma (ATL) and HTLV-1-associated myelopathy/tropical spastic paraparesis. Tax(1) is a 40-kDa phosphoprotein, predominantly localized in the nucleus of the host cell, which functions to transactivate both viral and cellular promoters. It seems likely that HTLV-1, through expression of the viral regulatory protein Tax(1), provides some initial alteration in cell metabolism predisposing the development of ATL. Here, we demonstrate that HTLV-1 infection in T-cell lines and patient samples causes overexpression of an early G(1) cyclin, cyclin D2. The transcriptional up-regulation of the cyclin D2 gene is due to activation of Tax on the cyclin D2 gene. More important, we find that overexpression of cyclin D2 is accompanied by acquisition of new partners such as cyclin-dependent kinase 2 (cdk2), cdk4, and cdk6 in infected cells. This is in contrast to uninfected T cells, where cyclin D2 associates only with cdk6. Functional effects of these cyclin-cdk complexes in infected cells are shown by hyperphosphorylation of Rb and histone H1, indicators of active progression into S phase as well as changes in cellular chromatin and transcription machinery. These studies link HTLV-1 infection with changes of cellular cyclin gene expression, hence providing clues to development of T-cell leukemia.
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Affiliation(s)
- F Santiago
- Department Biochemistry, UMDNJ-New Jersey Medical School, Newark, New Jersey 07103, USA
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Mucientes AE, Poblete FJ, Rodriguez D, Rodriguez MA, Santiago F. Kinetic study of ruthenium(VI)-catalyzed oxidation of 2-butanol by alkaline hexacyanoferrate(III). INT J CHEM KINET 1999. [DOI: 10.1002/(sici)1097-4601(1999)31:1<1::aid-kin1>3.0.co;2-p] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Mucientes AE, Poblete FJ, Gabaldon RE, Rodriguez MA, Santiago F. Kinetic Study of Ruthenium(iii)-catalysed Oxidation of 2-Methylpentane-2,4-diol by Alkaline Hexacyanoferrate(iii). J Chem Res 1998. [DOI: 10.1039/a708849c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mucientes AE, Poblete FJ, Rodriguez MA, Santiago F. Kinetic study of the oxidation of propan-1-ol by alkaline hexacyanoferrate(III) catalysed by ruthenium trichloride. J PHYS ORG CHEM 1997. [DOI: 10.1002/(sici)1099-1395(199709)10:9<662::aid-poc934>3.0.co;2-l] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ward RL, Todd AV, Santiago F, O'Connor T, Hawkins NJ. Activation of the K-ras oncogene in colorectal neoplasms is associated with decreased apoptosis. Cancer 1997; 79:1106-13. [PMID: 9070487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Recent in vitro data indicate that the oncogenic effects of activated ras genes may be mediated, at least in part, through inhibition of apoptotic cell death. To examine this proposition in vivo, the relationship between mutations of the K-ras gene and the frequency of apoptosis was studied in a series of 69 sporadic colorectal neoplasms (11 adenomas and 58 carcinomas). METHODS Mutations in codon 12 of K-ras were determined by a single tube, enriched polymerase chain reaction. Apoptotic cells in tumor sections were identified by in situ end-labeling of fragmented DNA, whereas levels of bcl-2 and p53 proteins were determined by immunohistochemistry. RESULTS Tumors with mutant K-ras had a significantly lower apoptotic index than those with the wild-type allele (P < 0.05). They were also more likely to exhibit positive bcl-2 staining (P < 0.05). Adenomas showed significantly greater bcl-2 positivity than carcinomas (89% and 51%, respectively; P < 0.05). The frequency of apoptosis in these tumors was not related to either bcl-2 positivity or p53 status. CONCLUSIONS These findings suggest that activation of K-ras in colorectal carcinoma may inhibit apoptosis and thus favor tumor progression. Alternatively, this association may reflect an accumulation of K-ras mutations in cells in which normal apoptotic pathways have been impaired.
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Affiliation(s)
- R L Ward
- Department of Medical Oncology, St. Vincent's Hospital, Darlinghurst, Australia
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