1
|
Whelan C, Coelho T, Conceicao I, Brannagan Iii TH, Wang AK, Polydefkis MJ, Dyck PJ, Berk JL, Obici L, Kristen A, Narayana A, Olugemo K, Aquino P, Benson MD, Gertz M. Long-term efficacy and safety of inotersen in patients with hereditary transthyretin amyloid polyneuropathy with or without cardiomyopathy: post hoc analysis of NEURO-TTR open-label extension. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2745] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background/Introduction
Cardiomyopathy (CM) with associated heart failure and polyneuropathy (PN) are common manifestations of hereditary transthyretin amyloidosis (ATTRv), a progressive, debilitating, and fatal disease that results from the deposition of misfolded transthyretin (TTR) protein throughout the body. NEURO-TTR (NCT01737398) showed that inotersen, an antisense oligonucleotide inhibitor of TTR protein production, slowed the progression of PN and maintained quality of life in patients with ATTRv.
Purpose
To report efficacy and safety from the open-label extension (OLE) of the NEURO-TTR study in patients with ATTRv PN overall and in CM subgroups.
Methods
Patients who completed NEURO-TTR, enrolled in the OLE (NCT02175004), and either switched from placebo in NEURO-TTR to inotersen in the OLE (placebo-inotersen) or received inotersen in NEURO-TTR and remained on inotersen in the OLE (inotersen-inotersen) were included. Assessments included the modified Neuropathy Impairment Score +7 composite score (mNIS+7 [range –22.3 to 346.3], a measure of neuropathy with higher scores indicative of poorer function), TTR levels, and safety monitoring. Utilizing patients from Europe and North America (EU+NA) as of 28 July 2020, this post hoc analysis examined two subgroups: CM ECHO and severe CM ECHO. CM was defined as a diagnosis of ATTRv CM at study entry or all of the following criteria: a left ventricular wall thickness of ≥1.3 cm on transthoracic echocardiography at baseline, no known history of persistent hypertension (systolic blood pressure ≥150 mm Hg) within 12 months before study screening, and evaluable baseline ECHO obtained by central assessment. Severe CM was defined as an interventricular septum thickness ≥1.5 cm at baseline. Descriptive statistics are reported.
Results
In the overall population and both CM subgroups, the placebo-inotersen group demonstrated slowing of neurological disease progression compared with natural history based on NEURO-TTR placebo projection (estimated natural history will be presented). Furthermore, in the overall population and both CM subgroups, the inotersen-inotersen group demonstrated sustained benefit compared with the placebo-inotersen group (Table). Change in serum TTR levels will be presented. There have been no reports of grade 4 thrombocytopenia or acute glomerulonephritis under enhanced monitoring in patients in the EU+NA despite the increased duration of exposure. No new safety concerns were identified.
Conclusions
Inotersen treatment for >3 years slowed the progression of PN associated with ATTRv in patients with CM, including severe CM. In both subgroups, greater neurological preservation was observed in those who initiated inotersen earlier (inotersen-inotersen group), underscoring the benefits of early treatment. No new safety signals were detected in this OLE analysis; enhanced monitoring is successful in managing the risk for thrombocytopenia and acute glomerulonephritis.
Funding Acknowledgement
Type of funding sources: Private company. Main funding source(s): This study was sponsored by Akcea Therapeutics, an affiliate of Ionis Pharmaceuticals, Inc.
Collapse
Affiliation(s)
- C Whelan
- National Amyloidosis Centre, Royal Free Hospital, London, United Kingdom
| | - T Coelho
- Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - I Conceicao
- CHULN, Hospital Santa Maria and Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - T H Brannagan Iii
- Columbia University Medical Center, New York, United States of America
| | - A K Wang
- University of California, Irvine, Orange, United States of America
| | - M J Polydefkis
- Johns Hopkins University, Baltimore, United States of America
| | - P J Dyck
- Mayo Clinic, Rochester, United States of America
| | - J L Berk
- Boston University, Boston, United States of America
| | - L Obici
- Amyloidosis Center, IRCCS Fondazione Policlinico San Matteo, Pavia, Italy
| | - A Kristen
- Amyloidosis Center, Heidelberg University Hospital, Heidelberg, Germany
| | - A Narayana
- Akcea Therapeutics, Boston, United States of America
| | - K Olugemo
- Akcea Therapeutics, Boston, United States of America
| | - P Aquino
- Akcea Therapeutics, Boston, United States of America
| | - M D Benson
- Indiana University School of Medicine, Indianapolis, United States of America
| | - M Gertz
- Mayo Clinic, Rochester, United States of America
| | | |
Collapse
|
2
|
Brannagan TH, Wang AK, Coelho T, Waddington Cruz M, Polydefkis MJ, Dyck PJ, Plante-Bordeneuve V, Berk JL, Barroso F, Merlini G, Conceição I, Hughes SG, Kwoh J, Jung SW, Guthrie S, Pollock M, Benson MD, Gertz M. Early data on long-term efficacy and safety of inotersen in patients with hereditary transthyretin amyloidosis: a 2-year update from the open-label extension of the NEURO-TTR trial. Eur J Neurol 2020; 27:1374-1381. [PMID: 32343462 PMCID: PMC7496583 DOI: 10.1111/ene.14285] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 03/26/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND PURPOSE Hereditary transthyretin (hATTR) amyloidosis causes progressive polyneuropathy resulting from transthyretin (TTR) amyloid deposition throughout the body, including the peripheral nerves. The efficacy and safety of inotersen, an antisense oligonucleotide inhibitor of TTR protein production, were demonstrated in the pivotal NEURO-TTR study in patients with hATTR polyneuropathy. Here, the long-term efficacy and safety of inotersen are assessed in an ongoing open-label extension (OLE) study. METHODS Patients who completed NEURO-TTR were eligible to enroll in the OLE (NCT02175004). Efficacy assessments included the modified Neuropathy Impairment Score plus seven neurophysiological tests composite score (mNIS + 7), the Norfolk Quality of Life - Diabetic Neuropathy (Norfolk QOL-DN) questionnaire total score and the Short-Form 36 Health Survey (SF-36) Physical Component Summary (PCS) score. Safety and tolerability were also assessed. RESULTS Overall, 97% (135/139) of patients who completed NEURO-TTR enrolled in the OLE. Patients who received inotersen for 39 cumulative months in NEURO-TTR and the OLE continued to show benefit; patients who switched from placebo to inotersen in the OLE demonstrated improvement or stabilization of neurological disease progression by mNIS + 7, Norfolk QOL-DN and SF-36 PCS. No new safety concerns were identified. There was no evidence of increased risk for grade 4 thrombocytopenia or severe renal events with increased duration of inotersen exposure. CONCLUSION Inotersen slowed disease progression and reduced deterioration of quality of life in patients with hATTR polyneuropathy. Early treatment with inotersen resulted in greater long-term disease stabilization than delayed initiation. Routine platelet and renal safety monitoring were effective; no new safety signals were observed.
Collapse
Affiliation(s)
- T H Brannagan
- Columbia University Medical Center, New York, NY, USA
| | - A K Wang
- University of California, Irvine, Orange, CA, USA
| | - T Coelho
- Centro Hospitalar do Porto, Porto, Portugal
| | - M Waddington Cruz
- CEPARM, Amyloidosis Referral Center, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | - J L Berk
- Boston University, Boston, MA, USA
| | | | - G Merlini
- Amyloidosis Center, IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy
| | - I Conceição
- CHULN, Hospital Santa Maria and Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - S G Hughes
- Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - J Kwoh
- Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - S W Jung
- Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | | | - M Pollock
- Akcea Therapeutics, Inc., Boston, MA, USA
| | - M D Benson
- Indiana University School of Medicine, Indianapolis, IN, USA
| | - M Gertz
- Mayo Clinic, Rochester, MN, USA
| | | |
Collapse
|
3
|
Garrido C, Sousa A, Cardoso M, Taipa R, Vieira E, Gonçalves A, Melo Pires M, Santos R, Coelho T, Santos M. P.169Sarcoglycanopathies: experience of a tertiary centre. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.224] [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]
|
4
|
Rosas F, Chinen L, Pellizon A, Gondim G, Silva M, Chen M, Fogaroli R, Ramos H, Coelho T, Scintini A, Calsavara V, Castro D. Kinetics of Circulating Tumor Cells and Survival Outcomes after Stereotactic Radiotherapy/Radiosurgery for Brain Metastases of Breast Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2363] [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]
|
5
|
Garrido C, Palavra F, Cardoso M, Sousa A, Rocha R, Alves D, Santos M, Vila Real M, Vieira J, Coelho T, Fineza I, Moreno T, Santos M. DUCHENNE MUSCULAR DYSTROPHY – CLINICAL. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.045] [Citation(s) in RCA: 1] [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: 11/25/2022]
|
6
|
Oliveira Santos M, Falcão de Campos C, Garrido C, Conceição I, Palavra F, Negrão L, Pedro Vieira J, Mendonça C, Coelho T, Fineza I, Santos M, Moreno T. SMA CLINICAL DATA, OUTCOME MEASURES AND REGISTRIES. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.106] [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: 10/28/2022]
|
7
|
Maia P, Machado A, Chen M, Silva M, Fogaroli R, Castro D, Coelho T, Ramos H, Gondim G, Pellizzon A. EP-2255: High Dose Rate Brachytherapy In Patients With Non Melanoma Skin Cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32564-7] [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: 10/14/2022]
|
8
|
Pellizzon A, Silva M, Fogaroli R, Guedes D, Chojniak M, Chen M, Godin G, Ramos H, Coelho T. EP-2250: Salvage second treatment of posterior uveal melanomas with episcleral plaque brachytherapy. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32559-3] [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: 10/14/2022]
|
9
|
Costa SS, Lopes E, Azzali E, Machado D, Coelho T, da Silva PEA, Viveiros M, Pieroni M, Couto I. An Experimental Model for the Rapid Screening of Compounds with Potential Use Against Mycobacteria. Assay Drug Dev Technol 2017; 14:524-534. [PMID: 27845849 DOI: 10.1089/adt.2016.752] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 01/23/2023] Open
Abstract
Infections caused by Mycobacterium tuberculosis and other mycobacteria are major challenges for global public health. Particularly worrisome are infections caused by multidrug-resistant bacteria, which are increasingly difficult to treat because of the loss of efficacy of the current antibacterial agents, a problem that continues to escalate worldwide. There has been a limited interest and investment on the development of new antibacterial agents in the past decades. This has led to the current situation, in which there is an urgent demand for innovative therapeutic alternatives to fight infections caused by multidrug-resistant pathogens, such as multidrug-resistant tuberculosis. The identification of compounds that can act as adjuvants in antimycobacterial therapeutic regimens is an appealing strategy to restore the efficacy lost by some of the antibiotics currently used and shorten the duration of the therapeutic regimen. In this work, by setting Mycobacterium smegmatis as a model organism, we have developed a methodological strategy to identify, in a fast and simple approach, compounds with antimycobacterial activity or with potential adjuvant properties, by either inhibition of efflux or other unrelated mechanisms. Such an approach may increase the rate of identification of promising molecules, to be further explored in pathogenic models for their potential use either as antimicrobials or as adjuvants, in combination with available therapeutic regimens for the treatment of mycobacterial infections. This method allowed us to identify a new molecule that shows promising activity as an efflux inhibitor in M. smegmatis.
Collapse
Affiliation(s)
- Sofia Santos Costa
- 1 Global Health and Tropical Medicine, GHTM, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa , UNL, Lisbon, Portugal
| | - Elizeth Lopes
- 1 Global Health and Tropical Medicine, GHTM, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa , UNL, Lisbon, Portugal
| | - Elisa Azzali
- 2 P4T group, Department of Pharmacy, University of Parma , Parma, Italy
| | - Diana Machado
- 1 Global Health and Tropical Medicine, GHTM, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa , UNL, Lisbon, Portugal
| | - Tatiane Coelho
- 3 Núcleo de Pesquisa em Microbiologia Médica, Faculdade de Medicina, Universidade Federal do Rio Grande , Rio Grande, Brazil
| | - Pedro Eduardo Almeida da Silva
- 3 Núcleo de Pesquisa em Microbiologia Médica, Faculdade de Medicina, Universidade Federal do Rio Grande , Rio Grande, Brazil
| | - Miguel Viveiros
- 1 Global Health and Tropical Medicine, GHTM, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa , UNL, Lisbon, Portugal
| | - Marco Pieroni
- 2 P4T group, Department of Pharmacy, University of Parma , Parma, Italy
| | - Isabel Couto
- 1 Global Health and Tropical Medicine, GHTM, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa , UNL, Lisbon, Portugal
| |
Collapse
|
10
|
Rodrigues P, Pereira D, Coelho T, Reis H. P5401Tafamidis and cardiovascular involvement in hereditary ATTR amyloidosis: a 10-year story. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5401] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
11
|
Mossotto E, Ashton JJ, Coelho T, Beattie RM, MacArthur BD, Ennis S. Classification of Paediatric Inflammatory Bowel Disease using Machine Learning. Sci Rep 2017; 7:2427. [PMID: 28546534 PMCID: PMC5445076 DOI: 10.1038/s41598-017-02606-2] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 04/12/2017] [Indexed: 02/07/2023] Open
Abstract
Paediatric inflammatory bowel disease (PIBD), comprising Crohn's disease (CD), ulcerative colitis (UC) and inflammatory bowel disease unclassified (IBDU) is a complex and multifactorial condition with increasing incidence. An accurate diagnosis of PIBD is necessary for a prompt and effective treatment. This study utilises machine learning (ML) to classify disease using endoscopic and histological data for 287 children diagnosed with PIBD. Data were used to develop, train, test and validate a ML model to classify disease subtype. Unsupervised models revealed overlap of CD/UC with broad clustering but no clear subtype delineation, whereas hierarchical clustering identified four novel subgroups characterised by differing colonic involvement. Three supervised ML models were developed utilising endoscopic data only, histological only and combined endoscopic/histological data yielding classification accuracy of 71.0%, 76.9% and 82.7% respectively. The optimal combined model was tested on a statistically independent cohort of 48 PIBD patients from the same clinic, accurately classifying 83.3% of patients. This study employs mathematical modelling of endoscopic and histological data to aid diagnostic accuracy. While unsupervised modelling categorises patients into four subgroups, supervised approaches confirm the need of both endoscopic and histological evidence for an accurate diagnosis. Overall, this paper provides a blueprint for ML use with clinical data.
Collapse
Affiliation(s)
- E Mossotto
- Human Genetics and Genomic Medicine, University of Southampton, Southampton, UK
- Institute for Life Sciences, University of Southampton, Southampton, UK
| | - J J Ashton
- Human Genetics and Genomic Medicine, University of Southampton, Southampton, UK
- Department of Paediatric Gastroenterology, Southampton Children's Hospital, Southampton, UK
| | - T Coelho
- Human Genetics and Genomic Medicine, University of Southampton, Southampton, UK
- Department of Paediatric Gastroenterology, Southampton Children's Hospital, Southampton, UK
| | - R M Beattie
- Department of Paediatric Gastroenterology, Southampton Children's Hospital, Southampton, UK
| | - B D MacArthur
- Institute for Life Sciences, University of Southampton, Southampton, UK
| | - S Ennis
- Human Genetics and Genomic Medicine, University of Southampton, Southampton, UK.
| |
Collapse
|
12
|
Oliveira J, Cardoso M, Taipa R, Gonçalves A, Oliveira M, Melo-Pires M, Santos M, Coelho T, Santos R. The expanding phenotype of LAMA2-related muscular dystrophies: Four additional cases diagnosed during adulthood. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
13
|
Conceicao I, Suhr O, Coelho T, Waddington Cruz M, Schmidt H, Buades J, Campistol J, Pouget J, Berk J, Adams D. Phase 2 open-label extension study of patisiran, an investigational siRNA agent for hereditary ATTR amyloidosis with polyneuropathy (hATTR-PN). Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
14
|
Abstract
Incidence and radiologic findings of neurocysticercosis were investigated in a series of 23 800 consecutive head examinations using computed tomography (CT). The condition was diagnosed in 168 cases (0.7%). The parenchymatous form was the most common presentation (96.3%), while the meningeal form corresponded to only 11.9 per cent of cases. These two forms coexisted in some cases. These findings reversed the knowledge on the condition based on conventional radiography. The different CT appearances in the brain are described and a new radiologic protocol for the CT evaluation of the condition is advocated, which includes a follow-up after a trial cure with Praziquantel in the presence of cysts not associated with suggestive brain calcifications. CT was more sensitive than conventional radiography in the differentiation between dead and living larvae, thus having an impact on the therapeutic management of the patients.
Collapse
|
15
|
Mata-Santos T, D'Oca CDRM, Mata-Santos HA, Fenalti J, Pinto N, Coelho T, Berne ME, da Silva PEA, D'Oca MGM, Scaini CJ. Toxocara canis: Larvicidal activity of fatty acid amides. Bioorg Med Chem Lett 2016; 26:739-741. [PMID: 26783180 DOI: 10.1016/j.bmcl.2016.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 12/31/2015] [Accepted: 01/04/2016] [Indexed: 01/04/2023]
Abstract
Considering the therapeutic potential of fatty acid amides, the present study aimed to evaluate their in vitro activity against Toxocara canis larvae and their cytotoxicity for the first time. Linoleylpyrrolidilamide was the most potent, with a minimal larvicidal concentration (MLC) of 0.05 mg/mL and 27% cytotoxicity against murine peritoneal macrophages C57BL/6 mice, as assessed by the MTT assay.
Collapse
Affiliation(s)
- Taís Mata-Santos
- Parasitology Laboratory, Faculty of Medicine, Universidade Federal do Rio Grande, Rio Grande, Brazil.
| | - Caroline da Ros Montes D'Oca
- Laboratory Kolbe of Organic Synthesis, School of Chemistry and Food, Universidade Federal do Rio Grande, Rio Grande, Brazil
| | - Hílton Antônio Mata-Santos
- Department of Clinical and Toxicological Analysis, Pharmacy College, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Juliana Fenalti
- Parasitology Laboratory, Faculty of Medicine, Universidade Federal do Rio Grande, Rio Grande, Brazil
| | - Nitza Pinto
- Parasitology Laboratory, Faculty of Medicine, Universidade Federal do Rio Grande, Rio Grande, Brazil
| | - Tatiane Coelho
- Center for Research and Medical Microbiology, Faculty of Medicine, Universidade Federal do Rio Grande, Rio Grande, Brazil
| | - Maria Elisabeth Berne
- Department of Microbiology and Parasitology, Institute of Biology, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Pedro Eduardo Almeida da Silva
- Center for Research and Medical Microbiology, Faculty of Medicine, Universidade Federal do Rio Grande, Rio Grande, Brazil
| | - Marcelo Gonçalves Montes D'Oca
- Laboratory Kolbe of Organic Synthesis, School of Chemistry and Food, Universidade Federal do Rio Grande, Rio Grande, Brazil
| | - Carlos James Scaini
- Parasitology Laboratory, Faculty of Medicine, Universidade Federal do Rio Grande, Rio Grande, Brazil
| |
Collapse
|
16
|
Ashton JJ, Coelho T, Ennis S, Batra A, Afzal NA, Beattie RM. Presenting phenotype of paediatric inflammatory bowel disease in Wessex, Southern England 2010-2013. Acta Paediatr 2015; 104:831-7. [PMID: 25847524 DOI: 10.1111/apa.13017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 03/12/2015] [Accepted: 03/27/2015] [Indexed: 12/17/2022]
Abstract
AIM There has been at least a twofold increase in the incidence of paediatric inflammatory bowel disease (PIBD) over the last 20 years; we report the presenting features from 2010 to 2013 and compare with previous data. METHODS All patients diagnosed with PIBD at University Hospitals Southampton from 2010 to 2013 were identified from an in-house database. Data were obtained from paper and electronic notes. Height, weight and BMI SDS are presented as median values (95% CI). RESULTS One hundred and seventy-two patients were included (median age at diagnosis 13.5, 115 male); Crohn's disease (CD) - 107, UC - 50, inflammatory bowel disease unclassified (IBDU) - 15. The most common presenting features of CD were abdominal pain (86%), diarrhoea (78.5%) and weight loss (56.1%); 42.1% of patients had all three. In UC blood in stool (92%), diarrhoea (92%) and abdominal pain (88%) were the most common; all three in 76% of patients. CD presented with ileocolonic disease in 52.5%. UC presented with pancolitis in 64%. There was growth delay in CD: height -0.37 (-0.60 to -0.14); weight -1.09 (-1.35 to -0.83). Growth was maintained in UC: height 0.53 (0.19 to 0.87); weight 0.14 (-0.20 to 0.48). CONCLUSION Paediatric inflammatory bowel disease phenotype remains as extensive despite increasing incidence. Although the classical phenotype is common, a reasonable proportion present with atypical features, normal growth and normal blood markers.
Collapse
Affiliation(s)
- JJ Ashton
- Department of Paediatric Gastroenterology; University Hospital Southampton; Southampton UK
| | - T Coelho
- Department of Paediatric Gastroenterology; University Hospital Southampton; Southampton UK
| | - S Ennis
- Human Genetics and Genomic Medicine; University of Southampton; Duthie Building; University Hospital Southampton; Southampton UK
| | - A Batra
- Department of Paediatric Gastroenterology; University Hospital Southampton; Southampton UK
| | - NA Afzal
- Department of Paediatric Gastroenterology; University Hospital Southampton; Southampton UK
| | - RM Beattie
- Department of Paediatric Gastroenterology; University Hospital Southampton; Southampton UK
| |
Collapse
|
17
|
Coelho T, Machado D, Couto I, Maschmann R, Ramos D, von Groll A, Rossetti ML, Silva PA, Viveiros M. Enhancement of antibiotic activity by efflux inhibitors against multidrug resistant Mycobacterium tuberculosis clinical isolates from Brazil. Front Microbiol 2015; 6:330. [PMID: 25972842 PMCID: PMC4412083 DOI: 10.3389/fmicb.2015.00330] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 04/01/2015] [Indexed: 11/25/2022] Open
Abstract
Drug resistant tuberculosis continues to increase and new approaches for its treatment are necessary. The identification of M. tuberculosis clinical isolates presenting efflux as part of their resistant phenotype has a major impact in tuberculosis treatment. In this work, we used a checkerboard procedure combined with the tetrazolium microplate-based assay (TEMA) to study single combinations between antituberculosis drugs and efflux inhibitors (EIs) against multidrug resistant M. tuberculosis clinical isolates using the fully susceptible strain H37Rv as reference. Efflux activity was studied on a real-time basis by a fluorometric method that uses ethidium bromide as efflux substrate. Quantification of efflux pump genes mRNA transcriptional levels were performed by RT-qPCR. The fractional inhibitory concentrations (FIC) indicated synergistic activity for the interactions between isoniazid, rifampicin, amikacin, ofloxacin, and ethidium bromide plus the EIs verapamil, thioridazine and chlorpromazine. The FICs ranged from 0.25, indicating a four-fold reduction on the MICs, to 0.015, 64-fold reduction. The detection of active efflux by real-time fluorometry showed that all strains presented intrinsic efflux activity that contributes to the overall resistance which can be inhibited in the presence of the EIs. The quantification of the mRNA levels of the most important efflux pump genes on these strains shows that they are intrinsically predisposed to expel toxic compounds as the exposure to subinhibitory concentrations of antibiotics were not necessary to increase the pump mRNA levels when compared with the non-exposed counterpart. The results obtained in this study confirm that the intrinsic efflux activity contributes to the overall resistance in multidrug resistant clinical isolates of M. tuberculosis and that the inhibition of efflux pumps by the EIs can enhance the clinical effect of antibiotics that are their substrates.
Collapse
Affiliation(s)
- Tatiane Coelho
- Fundação Estadual de Produção e Pesquisa em Saúde, Centro de Desenvolvimento Científico e Tecnológico Porto Alegre, Brazil ; Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul Porto Alegre, Brazil
| | - Diana Machado
- Grupo de Micobactérias, Unidade de Microbiologia Médica, Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa Lisboa, Portugal
| | - Isabel Couto
- Grupo de Micobactérias, Unidade de Microbiologia Médica, Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa Lisboa, Portugal
| | - Raquel Maschmann
- Fundação Estadual de Produção e Pesquisa em Saúde, Centro de Desenvolvimento Científico e Tecnológico Porto Alegre, Brazil ; Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul Porto Alegre, Brazil
| | - Daniela Ramos
- Faculdade de Medicina, Núcleo de Pesquisa em Microbiologia Médica, Universidade Federal do Rio Grande Rio Grande, Brazil
| | - Andrea von Groll
- Faculdade de Medicina, Núcleo de Pesquisa em Microbiologia Médica, Universidade Federal do Rio Grande Rio Grande, Brazil
| | - Maria L Rossetti
- Fundação Estadual de Produção e Pesquisa em Saúde, Centro de Desenvolvimento Científico e Tecnológico Porto Alegre, Brazil ; Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul Porto Alegre, Brazil
| | - Pedro A Silva
- Faculdade de Medicina, Núcleo de Pesquisa em Microbiologia Médica, Universidade Federal do Rio Grande Rio Grande, Brazil
| | - Miguel Viveiros
- Grupo de Micobactérias, Unidade de Microbiologia Médica, Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa Lisboa, Portugal
| |
Collapse
|
18
|
Ferraz I, Ramos I, Coelho T, Mota M. First Faster Then Slower. Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)32100-3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
19
|
|
20
|
Coelho T, Paúl C, Fernandes L. Frailty: Comparison of Three Measures for the Prediction of Short-term Adverse Outcomes. Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)31131-7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
21
|
Rybarczyk Y, Coelho T, Cardoso T, de Oliveira R. Effect of avatars and viewpoints on performance in virtual world: efficiency vs. telepresence. EAI Endorsed Transactions on Creative Technologies 2014. [DOI: 10.4108/ct.1.1.e4] [Citation(s) in RCA: 6] [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: 11/05/2022] Open
|
22
|
Ferraz I, Coelho T, Silva S, Rodrigues P, Castedo J, Mota M. EPA-0495 – Like mother, like daughter. Eur Psychiatry 2014. [DOI: 10.1016/s0924-9338(14)77901-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
|
23
|
Guerra C, Coelho T, Melo R, Guimarães R, Moura M. EPA-0602 – Donors motivation and altruism narratives in living kidney transplantation. Eur Psychiatry 2014. [DOI: 10.1016/s0924-9338(14)77987-8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
24
|
Guerra C, Coelho T, Torres C, Correia R, Moreira R, Silva A, Mota M. EPA-0596 – Catatonia and electroconvulsive therapy: are there patients that need a higher number of sessions? Eur Psychiatry 2014. [DOI: 10.1016/s0924-9338(14)77983-0] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
25
|
Valdrez K, Alves E, Coelho T, Silva S. Reasons for disuse preimplantation genetic diagnosis in carriers with familial amyloidotic polyneuropathy. Eur J Public Health 2013. [DOI: 10.1093/eurpub/ckt123.058] [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: 11/12/2022] Open
|
26
|
Leitão F, Leitão SG, de Almeida MZ, Cantos J, Coelho T, da Silva PEA. Medicinal plants from open-air markets in the State of Rio de Janeiro, Brazil as a potential source of new antimycobacterial agents. J Ethnopharmacol 2013; 149:513-521. [PMID: 23871806 DOI: 10.1016/j.jep.2013.07.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 06/30/2013] [Accepted: 07/06/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Several medicinal plants are traditionally traded in open-air markets in Rio de Janeiro State (Brazil) to treat tuberculosis (TB) and related symptoms. AIMS OF THE STUDY Conduct a survey in the open-air markets of 20 cities of Rio de Janeiro State to find medicinal plants that are popularly used to treat tuberculosis and other related diseases and assess their in vitro antimycobacterial activity. MATERIALS AND METHODS We used direct observation and semi-structured interviews and asked herbalists to list species (free listing) in order to gather data about the plant species most commonly used for lung problems. We calculated a Salience Index and acquired two species of "erva-de-passarinho" (mistletoe), Struthanthus marginatus and Struthanthus concinnus (Loranthaceae), commonly used to treat tuberculosis for a bioassay-guided isolation of the antimycobacterial active principles. Extracts, fractions and isolated compounds of both species were assayed in vitro against susceptible (H37Rv) and rifampicin-resistant (ATCC 35338) Mycobacterium tuberculosis strains. RESULTS From the interviews, we generated a list of 36 plant species belonging to 12 families. The mistletoes Struthanthus marginatus and Struthanthus concinnus showed high Salience Index values among plants used to treat tuberculosis. Bioassay-guided fractionation of hexane extracts from both species led to the isolation and/or identification of steroids and terpenoids. The Minimum Inhibitory Concentration (MIC) of the extracts and isolated compounds ranged from 25 to 200 μg/mL. Some of the isolated compounds have been previously assayed against Mycobacterium tuberculosis, others are reported here for the first time (obtusifoliol: MIC H37Rv 50 μg/mL, MIC ATCC 35338 12.5 μg/mL; 3-O-n-acil-lup-20(29)-en-3β,7β,15α-triol: MIC H37Rv 200 μg/mL, MIC ATCC 35338 100 μg/mL). CONCLUSIONS This study demonstrated the importance of ethnobotanical surveys in markets as a source for new drugs and also for scientific validation of folk medicine.
Collapse
Affiliation(s)
- Fernanda Leitão
- Programa de Biotecnologia Vegetal, Universidade Federal do Rio de Janeiro, UFRJ, Brazil
| | | | | | | | | | | |
Collapse
|
27
|
Coelho T, Maurer M, Plante-Bordeneuve V, Rapezzi C, THAOS Investigators. Baseline Demographics in THAOS - The Transthyretin Amyloidosis Outcomes Survey (P03.149). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p03.149] [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: 11/15/2022] Open
|
28
|
Kaufmann H, Maurer M, Coelho T, Plante-Bordeneuve V, Rapezzi C, Suhr O, THAOS Investigators. Comparison of US and Non-US Patients with Familial Amyloid Polyneuropathy (FAP) and Familial Amyloid Cardiomyopathy (FAC) in THAOS - The Transthyretin Amyloidosis Outcomes Survey (P01.114). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p01.114] [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: 11/15/2022] Open
|
29
|
Conceicao I, Coelho T, Plante-Bordeneuve V, Waddington Cruz M, Ericzon B, Falk R, Ikeda S, Maurer M, Suhr O, Ando Y, Mazzeo A, Grogan D. P3.28 Baseline neurologic function in symptomatic patients in the Transthyretin Amyloidosis Outcomes Survey (THAOS). Neuromuscul Disord 2011. [DOI: 10.1016/j.nmd.2011.06.922] [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: 11/24/2022]
|
30
|
Coelho T, Spence C, Almond S, Stone Y, Harrison M, Kanumakala S. Challenges in the management of a young child with Type 1 diabetes mellitus in a family of profoundly deaf parents. Diabet Med 2010; 27:1327-8. [PMID: 20950391 DOI: 10.1111/j.1464-5491.2010.03070.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
31
|
D’Oca CDRM, Coelho T, Marinho TG, Hack CRL, da Costa Duarte R, da Silva PA, D’Oca MGM. Synthesis and antituberculosis activity of new fatty acid amides. Bioorg Med Chem Lett 2010; 20:5255-7. [DOI: 10.1016/j.bmcl.2010.06.149] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Revised: 06/24/2010] [Accepted: 06/29/2010] [Indexed: 01/18/2023]
|
32
|
Abstract
BACKGROUND The diagnosis of amyloidosis of all types is definitively made by demonstration of Congo red binding material in the affected tissues. Nerve biopsy was classically used to diagnose amyloid polyneuropathy but less invasive alternative types of biopsies have been proposed including labial salivary gland (LSG) biopsy, a minimally invasive procedure. METHOD LSG biopsies were done in 87 subjects with molecular diagnosis of TTRVal30Met mutation. The group includes 76 patients in different stages of familial amyloid polyneuropathy and 11 asymptomatic carriers. They were all submitted to a stomatological and a neurological observation to evaluate oral health problems and to determine the neurological stage of the disease. No major oral health problems were found. Mean age of onset of the symptomatic disease was 32.8 years (+/-9.69 SD). CONCLUSIONS No significant side effects occurred after the surgical procedure, and adequate material for pathological analysis was always obtained. Amyloid deposition was found in 91% of the patients. Patients with negative biopsies (N = 7) were all in the earlier stage of the disease. Two asymptomatic carriers had biopsies with amyloid deposition. We conclude that LSG biopsy is a useful, sensitive and minimal invasive method to detect amyloid deposition.
Collapse
Affiliation(s)
- Barbas Do Amaral
- Department of Stomatology and Maxillofacial Surgery, Hospital de Santo António, Centro Hospitalar do Porto, Porto.
| | | | | | | |
Collapse
|
33
|
Cardoso M, Santos E, Carvalho A, Coelho T. D.P.4.01 Endocrine and metabolic disorders in Myotonic Dystrophy type 1. Neuromuscul Disord 2008. [DOI: 10.1016/j.nmd.2008.06.249] [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: 11/28/2022]
|
34
|
Oliveira J, Santos R, Soares-Silva I, Jorge P, Vieira E, Oliveira ME, Moreira A, Coelho T, Ferreira JC, Fonseca MJ, Barbosa C, Prats J, Aríztegui ML, Martins ML, Moreno T, Heinimann K, Barbot C, Pascual-Pascual SI, Cabral A, Fineza I, Santos M, Bronze-da-Rocha E. LAMA2 gene analysis in a cohort of 26 congenital muscular dystrophy patients. Clin Genet 2008; 74:502-12. [DOI: 10.1111/j.1399-0004.2008.01068.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
35
|
Santos M, Coelho T, Machado A, Cerqueira R, Fernandes A, Tavares P. N.P.3 09 Hereditary neuropathies in a pediatric clinic. Neuromuscul Disord 2006. [DOI: 10.1016/j.nmd.2006.05.085] [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: 11/29/2022]
|
36
|
Martins L, Pedroso S, Henriques AC, Dias L, Sarmento AM, Seca R, Oliveira F, Dores J, Lhamas A, Coelho T, Ribeiro A, Esteves S, Pereira R, Almeida R, Amil M, Cabrita A, Teixeira M. Simultaneous Pancreas-Kidney Transplantation: Five-Year Results From a Single Center. Transplant Proc 2006; 38:1929-32. [PMID: 16908326 DOI: 10.1016/j.transproceed.2006.06.089] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 10/24/2022]
Abstract
We report the 5-year results of our simultaneous pancreas-kidney transplantation (SPKT) program, started on May 2, 2000. Forty-two SPKT were performed on 42 type I diabetic patients with chronic renal failure. The procedure was performed with enteric diversion and vascular anastomosis to the iliac vessels. Immunosuppressive protocol included antithymocyte globulin, tacrolimus, mycophenolate mofetil, and steroids. The 24 women and 18 men had a mean age of 33.5 +/- 6.3 years and mean 22.8 +/- 14.2 years time of diabetes evolution. Forty patients had been on dialysis for 34.3 +/- 24.1 months, and two were preemptive transplantations. Acute rejection episodes were treated in eight patients (19.1%): in three cases they affected both organs; in two only the kidney was affected; and the other three were pancreas graft rejections. The incidence of postoperative complications requiring re-operation was 42.9%, mostly pancreas graft related. Two patients died, one due to cardiovascular disease; the other was transplant related. Three kidney grafts were lost, and the causes were immunologic, thrombosis, and patient death. Pancreas graft loss occurred in seven patients: thrombosis (n = 3); infection (n = 3); immunologic (n = 1). The patients with surviving grafts were doing well, with normal kidney and pancreas function: serum creatinine = 0.89 +/- 0.15 mg/dL; fasting blood glucose = 79 +/- 16 mg/dL; HbA1c = 4.7 +/- 1.1%. The 1-year patient, kidney, and pancreas survival rates were 97.3%, 94.6%, and 83.8% and 5-year values, 91.7%, 89.2%, and 78.7%, respectively. In conclusion, these results are similar to the most recent UNOS/IPTR reports, leading us to consider our experience with SPKT very positive.
Collapse
Affiliation(s)
- L Martins
- Nephrology Department, Hospital Santo António, Largo Professor Abel Salazar, 4050-011 Porto, Portugal.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Da Silva AM, Rocha N, Pinto M, Alves V, Farinha F, Correia AP, Coelho T, Magalhães M. Tremor as the first neurological manifestation of Sneddon's syndrome. Mov Disord 2004; 20:248-51. [PMID: 15382213 DOI: 10.1002/mds.20270] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 11/06/2022] Open
Abstract
We report on a 54-year-old woman with Sneddon's syndrome manifested by livedo reticularis, fetal losses, hypertension, and high antinuclear antibody titres. At the age of 42 years she developed tremor of the trunk, limbs, and head only in the standing position that interfered with walking, followed some years later by cognitive decline and a parkinsonian syndrome. T2-weighted brain magnetic resonance imaging showed high signal in cortical areas, basal ganglia, midbrain, and cerebellum.
Collapse
Affiliation(s)
- A Martins Da Silva
- Serviço de Neurologia do Hospital Geral de Santo António, Santo António, Porto, Portugal
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Martins L, Henriques A, Dias L, Ventura A, Seca R, Almeida R, Dores J, Bacelar C, Oliveira F, Lhamas A, Amil M, Rua F, Coelho T, Esteves S, Ribeiro A, Pereira R, Sarmento A, Teixeira M, Pereira M. Combined pancreas-kidney transplantation: a new program in Portugal, results from the first 12 cases. Transplant Proc 2003; 35:1107-8. [PMID: 12947877 DOI: 10.1016/s0041-1345(03)00327-0] [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: 10/27/2022]
Affiliation(s)
- L Martins
- Transplantation Department, Hospital Santo António, 4050, Porto, Portugal.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Guimarães CP, Lemos M, Menezes I, Coelho T, Sá-Miranda C, Azevedo JE. Characterisation of two mutations in the ABCD1 gene leading to low levels of normal ALDP. Hum Genet 2001; 109:616-22. [PMID: 11810273 DOI: 10.1007/s00439-001-0632-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2001] [Accepted: 09/14/2001] [Indexed: 11/25/2022]
Abstract
A variety of mutations have been identified in the X-linked adrenoleukodystrophy (X-ALD) gene, none of which is prevalent. In this work we describe a reverse transcription polymerase chain reaction (RT-PCR)-based strategy specially suited to the molecular characterisation of mutations in index cases. After RT-PCR amplification of the X-ALD transcript a conformation-sensitive gel electrophoresis analysis is performed followed by sequencing of the fragments with altered mobility. Two X-ALD patients were studied using this strategy. In both cases, splice site mutations were found. The first patient studied has a single base substitution at the first position of the invariant GT dinucleotide donor splice site of intron 8. In spite of this alteration, small quantities of correctly spliced mRNA molecules were easily detected. In agreement with these data, a small amount of ALDP was found by western blotting analysis. An alteration at the -1 position of the donor splice site of exon 1 was detected in the second patient. This mutation results in the utilisation of a cryptic 5' splice site within intron 1. Nevertheless, this transition also allows for some correct splicing. Western blotting analysis revealed the existence of normal-migrating ALDP. However, as expected, the levels of this protein were greatly decreased. Taken together, our data suggest that some less severe or late-onset forms of X-ALD associated with splice mutations result from the production of small amounts of normal ALDP. It is proposed that the quantification of ALDP levels in these patients could provide important insights concerning the correlation between clinical phenotype and amount of normal ALDP.
Collapse
Affiliation(s)
- C P Guimarães
- Genetic Neurobiology Department, IBMC--Oporto University, Rua do Campo Alegre, 823, 4150-180 Oporto, Portugal
| | | | | | | | | | | |
Collapse
|
40
|
Vilarinho L, Santorelli FM, Cardoso ML, Coelho T, Guimarães A, Coutinho P. Mitochondrial DNA analysis in ocular myopathy. Observations in 29 Portuguese patients. Eur Neurol 2000; 39:148-53. [PMID: 9605391 DOI: 10.1159/000007925] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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: 11/19/2022]
Abstract
We analyzed 29 patients with progressive external ophthalmoparesis (PEO) either alone or as part of a multisystem disorder. Ragged-red fibers were very abundant (10-20%) in 15 patients, and many of them were also cytochrome c oxidase-negative. Biochemical analysis of the respiratory chain showed partial defects of single or multiple complexes in 18 patients (64%). Eleven PEO patients (38%) harbored single large-scale mtDNA deletions in muscle, which averaged 5.4 kb in size and 47% in relative abundance. One PEO patient harbored the A3243G mutation (MELAS mutation) in muscle (63%). Our findings, the first reported in Portuguese patients, confirm that single large-scale mtDNA deletions are a significant cause of PEO. Although ophthalmoparesis was the main clinical feature in the majority of patients, the clinical spectrum is broad, ranging from severe encephalopathy of childhood to a milder, though disabling, muscle weakness in adults.
Collapse
Affiliation(s)
- L Vilarinho
- Department of Clinical Biology, Instituto de Genética Médica, Porto, Portugal
| | | | | | | | | | | |
Collapse
|
41
|
Coelho T, Braga J, Sequeira M. Hepatic hematomas in pregnancy. Acta Obstet Gynecol Scand 2000; 79:884-6. [PMID: 11304974] [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: 02/19/2023]
Affiliation(s)
- T Coelho
- Department of Obstetrics, Maternal and Fetal Medicine, Santo António Hospital, Oporto, Portugal
| | | | | |
Collapse
|
42
|
|
43
|
Munar-Qués M, Pedrosa JL, Coelho T, Gusmão L, Seruca R, Amorim A, Sequeiros J. Two pairs of proven monozygotic twins discordant for familial amyloid neuropathy (FAP) TTR Met 30. J Med Genet 1999; 36:629-32. [PMID: 10465115 PMCID: PMC1762972] [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: 02/13/2023]
Abstract
Twin studies are an important tool in medical genetics for the evaluation of the relative roles of genetic and non-genetic factors in several diseases. Familial amyloidotic polyneuropathy type I (FAP-I), TTR Met 30, was present in two sets of proven monozygotic (MZ) twins, one from Majorca and the other from Portugal. Monozygosity was established by analysis of DNA polymorphisms. Both pairs were discordant for age at onset and some clinical manifestations of FAP-I. We reviewed the differences in age at onset and clinical features in both sets and in two other pairs of presumed MZ twins with FAP-I and compared them with those in MZ twin pairs with other Mendelian disorders, such as neurofibromatosis type 1, Huntington's disease, facioscapulohumeral muscular dystrophy, and myotonic dystrophy. We conclude that, in addition to the postulated modifying genes, there must be a significant contribution from non-genetic factors to the phenotypic variability of FAP-I (age at onset and clinical expression), either because of environmental differences or stochastic events during (or after) the twinning process.
Collapse
Affiliation(s)
- M Munar-Qués
- Grupo de Estudio de la PAF, Palma de Mallorca, Spain
| | | | | | | | | | | | | |
Collapse
|
44
|
Soares M, Buxbaum J, Sirugo G, Coelho T, Sousa A, Kastner D, Saraiva MJ. Genetic anticipation in Portuguese kindreds with familial amyloidotic polyneuropathy is unlikely to be caused by triplet repeat expansions. Hum Genet 1999; 104:480-5. [PMID: 10453736 DOI: 10.1007/s004390050991] [Citation(s) in RCA: 26] [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] [Indexed: 10/28/2022]
Abstract
Familial amyloidotic polyneuropathy (FAP) is a lethal autosomal dominant type of amyloidosis resulting from the deposition of transthyretin (ATTR) variants in the peripheral and autonomic nervous systems. ATTR V30M-associated FAP exhibits marked genetic anticipation in some families, with clinical symptoms developing at an earlier age in successive generations. The genetic basis of this phenomenon in FAP is unknown. Anticipation has been associated with the dynamic expansion of trinucleotide repeats in several neurodegenerative disorders, such as Huntington disease, myotonic dystrophy, and fragile X syndrome. We have used the repeat expansion detection (RED) assay to screen affected members of Portuguese FAP kindreds for expansion of any of the ten possible trinucleotide repeats. Nine generational pairs with differences in their age of onset greater than 12 years and a control pair with identical ages of onset were tested. No major differences were found in the lengths of the ten trinucleotide repeats analyzed. The distribution of the maximal repeat sizes was consistent with reported studies in unrelated individuals with no known genetic disease. The present data do not support a role for trinucleotide repeat expansions as the molecular mechanism underlying anticipation in Portuguese FAP.
Collapse
Affiliation(s)
- M Soares
- Amyloid Unit, Instituto de Biologia Molecular e Celular (IBMC), Portugal
| | | | | | | | | | | | | |
Collapse
|
45
|
Beirão I, Lobato L, Guimarães SM, Cardoso P, Costa PM, Coelho T, Rocha G, Guimarães S. Early destructive spondyloarthropathy from combined beta2-microglobulin and transthyretin Met30 amyloidosis in a dialysed patient. Nephrol Dial Transplant 1998; 13:3223-5. [PMID: 9870498 DOI: 10.1093/ndt/13.12.3223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- I Beirão
- Department of Nephrology, Hospital Geral de Santo António, and Centro de Estudos de Paramiloidose, INSA, Porto, Portugal
| | | | | | | | | | | | | | | |
Collapse
|
46
|
Abstract
The effects of pituitary adenylyl cyclase activating polypeptide (PACAP) analogs on prostate cancer cell lines was investigated. 125I-PACAP-27 bound with high affinity to PC-3 cells (Kd = 10 nM) to a single class of sites (Bmax = 30000/cell). By RT-PCR, a major 305 bp band was observed using cDNA derived from PC-3, LNCaP or DU-145 cells. Specific 125I-PACAP binding was inhibited with high affinity by PACAP-27, PACAP-38 and PACAP(6-38) (IC50 values of 15, 10 and 300 nM, respectively) but not by PACAP(28-38). PACAP elevated cAMP and the increase caused by PACAP-27 was reversed by PACAP(6-38). PACAP transiently increased c-fos gene expression and the increase in c-fos mRNA was reversed by PACAP(6-38). PACAP-27 stimulated colony formation in PC-3 cells, whereas PACAP(6-38) reduced colony number and size. In nude mice bearing PC-3 xenografts, PACAP(6-38) significantly slowed tumor growth. These data suggest that biologically active type 1 PACAP receptors are present on human prostate cancer cells and that prostate cancer cell growth is inhibited by PACAP(6-38).
Collapse
Affiliation(s)
- J Leyton
- Cell and Cancer Biology Department, Medicine Branch, National Cancer Institute, Rockville, MD 20850, USA
| | | | | | | | | | | |
Collapse
|
47
|
Moody TW, Leyton J, Coelho T, Jakowlew S, Takahashi K, Jameison F, Koh M, Fridkin M, Gozes I, Knight M. (Stearyl, Norleucine17)VIP hybrid antagonizes VIP receptors on non-small cell lung cancer cells. Life Sci 1997; 61:1657-66. [PMID: 9363981 DOI: 10.1016/s0024-3205(97)00771-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [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: 02/05/2023]
Abstract
The effects of VIP receptor antagonists were investigated using non-small cell lung cancer (NSCLC) cells. By Northern blot and RT-PCR, VIP1 receptors were detected on NSCLC cell line NCI-H1299. VIPhybrid,(N-Stearyl-Norleucine17) VIPhybrid ((SN) VIPhybrid) and PTC4495 inhibited 125I-VIP binding to NCI-H1299 cells with IC50 values of 500, 30 and 5000 nM respectively. (SN) VIPhybrid (1 microM) had no effect on basal cAMP but strongly inhibited the increase in cAMP caused by 10 nM VIP. The order of peptide potency to inhibit cAMP was (SN) VIPhybrid > VIPhybrid > PTC4495. (SN) VIPhybrid was more potent than VIPhybrid at inhibiting NCI-H1299 colony formation. Also, (SN) VIPhybrid was more potent than VIPhybrid at inhibiting NCI-H1299 xenograft formation in nude mice. These data suggest that (SN) VIPhybrid antagonizes VIP1 receptors on NSCLC cells.
Collapse
Affiliation(s)
- T W Moody
- Medicine Branch, National Cancer Institute, Rockville, MD 20850, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Sousa A, Barros J, Coelho T, Lobato L, Drugge U, Sandgren O, Wikström L, Andersson R, Holmgren G, Costa P, Monteiro L, Sequeiros J. 4-48-08 Familial amyloid neuropathy (FAP-type I) in Portugal and Sweden: A more variable disease than the one first described. J Neurol Sci 1997. [DOI: 10.1016/s0022-510x(97)86200-4] [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: 11/29/2022]
|
49
|
Affiliation(s)
- L Vilarinho
- Department of Clinical Biology, Instituto de Genética Médica, Porto, Portugal
| | | | | | | | | |
Collapse
|
50
|
Abstract
The effects of pituitary adenylate cyclase activating polypeptide (PACAP) hybrid, a synthetic antagonist, was investigated on NIH/3T3 cells containing PACAP receptor (R) splice variants (SVs). PACAPhybrid inhibited 125I-PACAP-27 binding to NIH/3T3 cells stably expressing PACAP-R basic, SV-1, SV-2 or SV-3 with an IC50 of 1000 nM. PACAPhybrid antagonized the ability of PACAP-27 to elevate cAMP regardless of the PACAP-R SV used. PACAP was more efficacious at increasing cytosolic Ca2+ in NIH/3T3 cells containing PACAP-R SV-2 than PACAP-R basic, SV-1 or SV-3. PACAPhybrid antagonized the increase in cytosolic Ca2+ caused by PACAP-27 regardless of the PACAP-R SV used. PACAP was more potent at elevating c-fos mRNA using NIH/3T3 cells transfected with PACAP-R SV-2 than PACAP-R basic, SV-1 or SV-3. PACAPhybrid antagonized the increase in c-fos mRNA caused by PACAP-27. These data suggest that PACAPhybrid is a useful PACAP receptor antagonist for PACAP-R SVs.
Collapse
Affiliation(s)
- J R Pisegna
- CURE: VA/UCLA, Digestive Diseases Center, West L.A. VA Medical Center, CA 90073, USA
| | | | | | | | | | | | | | | | | |
Collapse
|