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Araújo F, Gonçalves J, Eurico Fonseca J. SAT0581 Cost Savings with Biosimilars in Rheumatology: A Systematic Literature Search of Budget Impact Analysis: Table 1. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Oliveira C, Wahlberg M, Silva MA, Johnson M, Antunes R, Wisniewska DM, Fais A, Gonçalves J, Madsen PT. Sperm whale codas may encode individuality as well as clan identity. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2016; 139:2860. [PMID: 27250178 DOI: 10.1121/1.4949478] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Sperm whales produce codas for communication that can be grouped into different types according to their temporal patterns. Codas have led researchers to propose that sperm whales belong to distinct cultural clans, but it is presently unclear if they also convey individual information. Coda clicks comprise a series of pulses and the delay between pulses is a function of organ size, and therefore body size, and so is one potential source of individual information. Another potential individual-specific parameter could be the inter-click intervals within codas. To test whether these parameters provide reliable individual cues, stereo-hydrophone acoustic tags (Dtags) were attached to five sperm whales of the Azores, recording a total of 802 codas. A discriminant function analysis was used to distinguish 288 5 Regular codas from four of the sperm whales and 183 3 Regular codas from two sperm whales. The results suggest that codas have consistent individual features in their inter-click intervals and inter-pulse intervals which may contribute to individual identification. Additionally, two whales produced different coda types in distinct foraging dive phases. Codas may therefore be used by sperm whales to convey information of identity as well as activity within a social group to a larger extent than previously assumed.
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Sánchez-Ledesma MJ, Juanes JA, Sáncho C, Alonso-Sardón M, Gonçalves J. Acquisition of Competencies by Medical Students in Neurological Emergency Simulation Environments Using High Fidelity Patient Simulators. J Med Syst 2016; 40:139. [DOI: 10.1007/s10916-016-0496-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 04/11/2016] [Indexed: 01/22/2023]
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Pires AP, Gonçalves J, Sá V, Silva A, Sandell R. Assessment of Change in Psychoanalysis: Another Way of Using the Change After Psychotherapy Scales. J Am Psychoanal Assoc 2016; 64:285-305. [PMID: 27073183 DOI: 10.1177/0003065116644743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Indexed: 11/16/2022]
Abstract
A systematic method is presented whereby material from a full course of psychoanalytic treatment is analyzed to assess changes and identify patterns of change. Through an analysis of session notes, changes were assessed using the CHange After Psychotherapy scales (CHAP; Sandell 1987a), which evaluate changes in five rating variables (symptoms, adaptive capacity, insight, basic conflicts, and extratherapeutic factors). Change incidents were identified in nearly every session. Early in the analysis, relatively more change incidents related to insight were found than were found for the other types of change. By contrast, in the third year and part of the fourth year, relatively more change incidents related to basic conflicts and adaptive capacity were found. While changes related to symptoms occurred throughout the course of treatment, such changes were never more frequent than other types of change. A content analysis of the change incidents allowed a determination of when in the treatment the patient's main conflicts (identified clinically) were overcome. A crossing of quantitative data with clinical and qualitative data allowed a better understanding of the patterns of change.
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Dörner T, Strand V, Cornes P, Gonçalves J, Gulácsi L, Kay J, Kvien TK, Smolen J, Tanaka Y, Burmester GR. The changing landscape of biosimilars in rheumatology. Ann Rheum Dis 2016; 75:974-82. [PMID: 26964144 PMCID: PMC4893105 DOI: 10.1136/annrheumdis-2016-209166] [Citation(s) in RCA: 135] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 02/18/2016] [Indexed: 12/30/2022]
Abstract
Biosimilars remain a hot topic in rheumatology, and some physicians are cautious about their application in the real world. With many products coming to market and a wealth of guidelines and recommendations concerning their use, there is a need to understand the changing landscape and the real clinical and health-economic potential offered by these agents. Notably, rheumatologists will be at the forefront of the use of biosimilar monoclonal antibodies/soluble receptors. Biosimilars offer cost savings and health gains for our patients and will play an important role in treating rheumatic diseases. We hope that these lower costs will compensate for inequities in access to therapy based on economic differences across countries. Since approved biosimilars have already demonstrated highly similar efficacy, it will be most important to establish pharmacovigilance databases across countries that are adequate to monitor long-term safety after marketing approval.
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Araujo GR, Fujimura PT, Vaz ER, Silva TA, Rodovalho VR, Britto-Madurro AG, Madurro JM, Fonseca JE, Silva CHM, Santos PS, Mourão AF, Canhão H, Goulart LR, Gonçalves J, Ueira-Vieira C. A novel reactive epitope-based antigen targeted by serum autoantibodies in oligoarticular and polyarticular juvenile idiopathic arthritis and development of an electrochemical biosensor. Immunobiology 2016; 221:634-40. [PMID: 26806845 DOI: 10.1016/j.imbio.2016.01.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 01/12/2016] [Accepted: 01/12/2016] [Indexed: 12/17/2022]
Abstract
Currently, there are no specific markers for juvenile idiopathic arthritis (JIA) diagnosis, which is based on clinical symptoms and some blood tests for diseases' exclusion. Aiming to select new epitope-based antigens (mimotopes) that could recognize circulating autoantibodies in most JIA forms, we screened a phage displayed random peptide library against IgG antibodies purified from serum of JIA patients. ELISA assay was carried out to confirm immunoreactivity of selected peptides against sera IgG antibodies from JIA patients, healthy children and patients with other autoimmune diseases. The mimotope PRF+1 fused to phage particles was able to efficiently discriminate JIA patients from controls, and for this reason was chosen to be chemically synthesized for validation in a larger sample size. The synthetic peptide was immobilized onto bioelectrodes' surface for antibody detection by electrochemical analyses through differential pulse voltammetry. The PRF+1 synthetic peptide has efficiently discriminated JIA patients from control groups (p<0.0001) with a very good accuracy (AUC>0.84; sensitivity=61%; specificity=91%). The electrochemical platform proved to be fast, low cost and effective in detecting anti-PRF+1 antibodies from JIA patients compared to healthy controls (p=0.0049). Our study describes a novel and promising epitope-based biomarker for JIA diagnosis that can become a useful tool for screening tests, which was successfully incorporated onto an electrochemical biosensor and could be promptly used in field diagnostics.
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Guerra J, Melo MJ, Santana A, Gonçalves J, Nascimento C, da Costa AG. Living kidney donor transplantation: an alternative with limitations. Transplant Proc 2016; 47:898-902. [PMID: 26036481 DOI: 10.1016/j.transproceed.2015.03.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND The major issues involved in the decision to donate are the perioperative risk and the risk of chronic kidney disease or even end-stage renal disease. The usual glomerular filtration rate (GFR) in kidney donors after transplantation is approximately 70% of the predonation rate; however, some have a GFR <60 mL/min/1.73 m(2). So after kidney donation, mild to moderate renal insufficiency may occur. Thus, it is important to identify predictor factors of postdonation kidney function. OBJECTIVES To evaluate the influence of predictor factors in the evolution of the remaining kidney function and to quantify nonpredictable and unexpected developments in GFR at 1 year post donation. METHODS We performed a study of the evolution of renal function pre- and postnephrectomy of 55 living donors without perioperative comorbidities and a mean follow-up of 6.03 ± 2.7 years. RESULTS One year after nephrectomy donor function was 32% lower than the prenephrectomy value and 21% of donors had an eGFR <60 mL/min/1.73 m(2). In multivariate logistic regression a living donor with a predonation eGFR <100 but >80 mL/min/1.73 m(2) had 5.24 times a chance of having an eGFR <60 mL/min/1.73 m(2) at 1 year post donation than if he had an eGFR ≥100 mL/min/1.73 m(2). Among 15 donors with prenephrectomy eGFR ≥80 and <100 mL/min/1.73m(2), 8 (53%), RR = 3.26 (1.517-7.012) had eGFR <60 mL/min/ 1.73 m(2). CONCLUSIONS The eGFR predonation and donor age influenced the first-year postnephrectomy eGFR. Some donors had a more accelerated eGFR fall, not always related to predonation eGFR and age.
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Justino GC, Pinheiro PF, Roseiro APS, Knittel ASO, Gonçalves J, Justino MC, Carvalho MFNN. Camphor-based CCR5 blocker lead compounds – a computational and experimental approach. RSC Adv 2016. [DOI: 10.1039/c6ra09627a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study identifies novel camphor-derived compounds that bind the CCR5 receptor and can be used as lead compounds for drug discovery.
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134
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Antunes I, Machado R, Loureiro L, Loureiro T, Borges L, Silveira D, Teixeira S, Rego D, Ferreira V, Gonçalves J, Teixeira G, de Almeida R. Falsos aneurismas traumáticos da artéria renal – a nossa experiência. ANGIOLOGIA E CIRURGIA VASCULAR 2015. [DOI: 10.1016/j.ancv.2015.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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135
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Ferreira V, Machado R, Martins J, Loureiro L, Loureiro T, Borges L, Silveira D, Teixeira S, Rego D, Gonçalves J, Teixeira G, Antunes I, Almeida R. Post-implantation syndrome – retrospective analysis of 52 patients. ANGIOLOGIA E CIRURGIA VASCULAR 2015. [DOI: 10.1016/j.ancv.2015.09.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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136
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Teixeira G, Martins J, Machado R, Loureiro L, Loureiro T, Borges L, Silveira D, Teixeira S, Rego D, Ferreira V, Gonçalves J, Antunes I, Matos A, Almeida R. Enfarte e abcesso esplénico maciço após tratamento endovascular de aneurisma da artéria esplénica. ANGIOLOGIA E CIRURGIA VASCULAR 2015. [DOI: 10.1016/j.ancv.2015.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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137
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Borges L, Vaz C, Matos A, Loureiro T, Loureiro L, Silveira D, Teixeira S, Rego D, Ferreira V, Gonçalves J, Teixeira G, Antunes I, Almeida R. Rutura de aneurisma degenerativo isolado da artéria femoral superficial. ANGIOLOGIA E CIRURGIA VASCULAR 2015. [DOI: 10.1016/j.ancv.2015.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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138
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Lima AC, Carvalho F, Gonçalves J, Fernandes S, Marques PI, Sousa M, Barros A, Seixas S, Amorim A, Conrad DF, Lopes AM. Rare double sex and mab-3-related transcription factor 1 regulatory variants in severe spermatogenic failure. Andrology 2015; 3:825-33. [PMID: 26139570 PMCID: PMC4802187 DOI: 10.1111/andr.12063] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 05/09/2015] [Accepted: 05/11/2015] [Indexed: 02/03/2023]
Abstract
The double sex and mab-3-related transcription factor 1 (DMRT1) gene has long been linked to sex-determining pathways across vertebrates and is known to play an essential role in gonadal development and maintenance of spermatogenesis in mice. In humans, the genomic region harboring the DMRT gene cluster has been implicated in disorders of sex development and recently DMRT1 deletions were shown to be associated with non-obstructive azoospermia (NOA). In this work, we have employed different methods to screen a cohort of Portuguese NOA patients for DMRT1 exonic insertions and deletions [by multiplex ligation probe assay (MLPA); n = 68] and point mutations (by Sanger sequencing; n = 155). We have found three novel patient-specific non-coding variants in heterozygosity that were absent from 357 geographically matched controls. One of these is a complex variant with a putative regulatory role (c.-223_-219CGAAA>T), located in the promoter region within a conserved sequence involved in Dmrt1 repression. Moreover, while DMRT1 domains are highly conserved across vertebrates and show reduced levels of diversity in human populations, two rare synonymous substitutions (rs376518776 and rs34946058) and two rare non-coding variants that potentially affect DMRT1 expression and splicing (rs144122237 and rs200423545) were overrepresented in patients when compared with 376 Portuguese controls (301 fertile and 75 normozoospermic). Overall our previous and present results suggest a role of changes in DMRT1 dosage in NOA potentially also through a process of gene misregulation, even though DMRT1 deleterious variants seem to be rare.
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139
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Carvalho SB, Gonçalves J, Guisan A, Honrado JP. Systematic site selection for multispecies monitoring networks. J Appl Ecol 2015. [DOI: 10.1111/1365-2664.12505] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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140
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Alves V, Gonçalves J, Conceição C, Teixeira HM, Câmara JS. An improved analytical strategy combining microextraction by packed sorbent combined with ultra high pressure liquid chromatography for the determination of fluoxetine, clomipramine and their active metabolites in human urine. J Chromatogr A 2015; 1408:30-40. [DOI: 10.1016/j.chroma.2015.07.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Revised: 07/01/2015] [Accepted: 07/06/2015] [Indexed: 10/23/2022]
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141
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Gonçalves J, Mojarad B, Gupta G, Coyaud E, Raught B, Pelletier L. A systematic proximity map of the centriole-cilia interface. Cilia 2015. [PMCID: PMC4518891 DOI: 10.1186/2046-2530-4-s1-p72] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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142
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Araujo GR, Vaz ER, Fujimura PT, Fonseca JE, de Lima LM, Canhão H, Venturini G, Cardozo KHM, Carvalho VM, Napimoga MH, Goulart LR, Gonçalves J, Ueira-Vieira C. Improved serological detection of rheumatoid arthritis: a highly antigenic mimotope of carbonic anhydrase III selected in a murine model by phage display. Arthritis Res Ther 2015; 17:168. [PMID: 26099944 PMCID: PMC4493817 DOI: 10.1186/s13075-015-0685-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 06/12/2015] [Indexed: 01/14/2023] Open
Abstract
INTRODUCTION Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease that affects around 1% of the human population worldwide. RA diagnosis can be difficult as there is no definitive test for its detection. Therefore, the aim of this study was to identify biomarkers that could be used for RA diagnosis. METHODS Sera from a collagen-induced arthritis mouse model were used to select potential biomarkers for RA diagnosis by phage display technology. In silico and in vitro analyses were performed to characterize and validate the selected peptides. Samples were classified into three groups: RA; two other immune-mediated rheumatic diseases (systemic lupus erythematosus (SLE) and ankylosing spondylitis (AS)); and healthy controls (HC). Enzyme-linked immunosorbent assay (ELISA) was carried out to determine antibody levels, and diagnostic parameters were determined by constructing receiver operating characteristic curves. Mass spectrometry and Western blot were performed to identify the putative autoantigen that was mimicked by a highly reactive mimotope. RESULTS After three rounds of selection, 14 clones were obtained and tested for immunoreactivity analysis against sera from RA and HC groups. The phage-fused peptide with the highest immunoreactivity (M12) was synthesized, and was able to efficiently discriminate RA patients from SLE, AS and HCs (p < 0.0001) by ELISA. The specificity and sensitivity of anti-M12 antibodies for RA diagnosis were 91 % and 84.3 %, respectively. The M12 peptide was identified as one that mimics a predicted antigenic site of the carbonic anhydrase III (CAIII) protein, a ubiquitous biomarker that has been identified in patients with other diseases. CONCLUSION M12 is the first peptide associated with the CAIII protein that may be used as an antigen for antibody detection to aid in RA diagnosis with high sensitivity and specificity.
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Gonçalves J, Tavares A, Carvalhal S, Soares H. Revisiting the tubulin folding pathway: new roles in centrosomes and cilia. Biomol Concepts 2015; 1:423-34. [PMID: 25962015 DOI: 10.1515/bmc.2010.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Centrosomes and cilia are critical eukaryotic organelles which have been in the spotlight in recent years given their implication in a myriad of cellular and developmental processes. Despite their recognized importance and intense study, there are still many open questions about their biogenesis and function. In the present article, we review the existing data concerning members of the tubulin folding pathway and related proteins, which have been identified at centrosomes and cilia and were shown to have unexpected roles in these structures.
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Pereira BD, Pereira I, Portugal JR, Gonçalves J, Raimundo L. X-linked adrenal hypoplasia congenita: clinical and follow-up findings of two kindreds, one with a novel NR0B1 mutation. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2015; 59:181-5. [PMID: 25993682 DOI: 10.1590/2359-3997000000032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Accepted: 06/30/2014] [Indexed: 11/21/2022]
Abstract
X-linked adrenal hypoplasia congenita typically manifests as primary adrenal insufficiency in the newborn age and hypogonadotropic hypogonadism in males, being caused by mutations in NR0B1 gene. We present the clinical and follow-up findings of two kindreds with NR0B1 mutations. The proband of kindred A had a diagnosis of primary adrenal insufficiency when he was a newborn. Family history was relevant for a maternal uncle death at the newborn age. Beyond 2 year-old steroid measurements rendered undetectable and delayed bone age was noticed. Molecular analysis of NR0B1 gene revealed a previously unreported mutation (c.1084A>T), leading to a premature stop codon, p.Lys362*, in exon 1. His mother and sister were asymptomatic carriers. At 14 year-old he had 3 mL of testicular volume and biochemical surveys (LH < 0.1 UI/L, total testosterone < 10 ng/dL) concordant with hypogonadotrophic hypogonadism. Kindred B had two males diagnosed with adrenal insufficiency at the newborn age. By 3 year-old both siblings had undetectable androgen levels and delayed bone age. NR0B1 molecular analysis identified a nonsense mutation in both cases, c.243C>G; p.Tyr81*, in exon 1. Their mother and sister were asymptomatic carriers. At 14 year-old (Tanner stage 1) hypothalamic-pituitary-gonadal axis evaluation in both males (LH < 0.1UI/L, total testosterone < 10 ng/dL) confirmed hypogonadotropic hypogonadism. In conclusion, biochemical profiles, bone age and an X-linked inheritance led to suspicion of NR0B1 mutations. Two nonsense mutations were detected in both kindreds, one previously unreported (c.1084A>T; p.Lys362*). Mutation identification allowed the timely institution of testosterone in patients at puberty and an appropriate genetic counselling for relatives.
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Teixeira S, Sá Pinto P, Gonçalves J, Silva I, Almeida R. [Renal artery embolism: thromboaspiration and catheter directed thrombolysis - A successful case]. REVISTA PORTUGUESA DE CIRURGIA CARDIO-TORACICA E VASCULAR : ORGAO OFICIAL DA SOCIEDADE PORTUGUESA DE CIRURGIA CARDIO-TORACICA E VASCULAR 2015; 22:115-118. [PMID: 27927005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Indexed: 06/06/2023]
Abstract
Renal artery embolism is a rare event and is associated with high risk of hypertension and functional renal loss. We report the clinical case of a renal artery embolism, which was treated using a combination of thromboaspiration and catheter directed thrombolysis, as well a short literature review on this subject. A 60-year-old male with previous medical history of atrial septal defect surgical repair and cardiac pacemaker was presented in the Emergency Department with complains of abdominal pain and vomiting. Patient had suspended oral anticoagulation to undergo a dental surgical procedure. The Angio-CT scan revealed a left renal artery occlusion, suggestive of embolism, with infarction of the ipsilateral kidney. We underwent, 36 hours after the beginning of complains, a left renal artery recanalization with recovery of renal perfusion, using percutaneous thromboaspiration and catheter directed thrombolysis. Renal scintigraphy, at the end of first month, showed left kidney differential function of 38.9%. In the follow-up period (32 months), serum creatinine levels stabilized at 1 mg/dL (1.59 at the admission). Percutaneous interventions, including thromboaspiration and catheter directed thrombolysis, can be used effectively to treat renal artery embolism. Clinical suspicion, lenght of evolution and previous development of a collateral circulation network are key factors to achieve a therapeutic success.
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Araujo GR, Fonseca JE, Fujimura PT, Cunha-Junior JP, Silva CHM, Mourão AF, Canhão H, Goulart LR, Gonçalves J, Ueira-Vieira C. Anti-type II collagen antibodies detection and avidity in patients with oligoarticular and polyarticular forms of juvenile idiopathic arthritis. Immunol Lett 2015; 165:20-5. [PMID: 25800643 DOI: 10.1016/j.imlet.2015.03.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 02/14/2015] [Accepted: 03/11/2015] [Indexed: 11/28/2022]
Abstract
Juvenile idiopathic arthritis (JIA) refers to a heterogeneous group of illnesses that have in common the occurrence of chronic joint inflammation in children younger than 16 years of age. The diagnosis is made only on clinical assessment. The identification of antibody markers could improve the early diagnosis, optimizing the clinical management of patients. Type II collagen is one potential autoantigen that has been implicated in the process of arthritis development. The aims of our study were to investigate the occurrence of anti-type II collagen antibodies and also to determine the avidity of the antibody-antigen binding. Ninety-six patients with oligoarticular or polyarticular JIA, 13 patients with ankylosing spondylitis (AS) and 61 healthy controls (HC) were tested for anti-type II collagen antibodies by ELISA and avidity ELISA. Sensitivity and specificity were determined by the receiver operating characteristic (ROC) curve analysis. Forty-two JIA patients (44%) were positive for antibodies against type II collagen. Its detection was significantly higher in JIA patients than in AS patients (p=0.006) and HCs (p<0.0001). Furthermore, anti-type II collagen antibody detection was significantly more frequent in patients with JIA of ≤6 months duration (p=0.0007). Antibodies displaying high avidity to type II collagen were associated with disease activity (p=0.004). This study demonstrates that antibodies against type II collagen are present in the serum of patients with oligoarticular and polyarticular JIA, being its presence more prevalent in patients with early disease. It also demonstrates that JIA patients with active disease present antibodies with high avidity against type II collagen.
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Silva F, Castro J, Godinho C, Gonçalves J, Ramalho G, Valente F. Minimally invasive approach of tubo-ovarian abscesses. REVISTA BRASILEIRA DE GINECOLOGIA E OBSTETRÍCIA 2015; 37:115-8. [DOI: 10.1590/so100-720320150005257] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 01/22/2015] [Indexed: 11/21/2022] Open
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Silva B, Pita L, Gomes S, Gonçalves J, Faustino P. The hepcidin gene promoter nc.-1010C > T; -582A > G haplotype modulates serum ferritin in individuals carrying the common H63D mutation in HFE gene. Ann Hematol 2015; 93:2063-6. [PMID: 25015054 DOI: 10.1007/s00277-014-2160-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 07/02/2014] [Indexed: 12/29/2022]
Abstract
Hereditary hemochromatosis is an autosomal recessive disorder characterized by severe iron overload. It is usually associated with homozygosity for the HFE gene mutation c.845G > A; p.C282Y. However, in some cases, another HFE mutation (c.187C > G; p.H63D) seems to be associated with the disease. Its penetrance is very low, suggesting the possibility of other iron genetic modulators being involved. In this work, we have screened for HAMP promoter polymorphisms in 409 individuals presenting normal or increased serum ferritin levels together with normal or H63D-mutated HFE genotypes. Our results show that the hepcidin gene promoter TG haplotype, originated by linkage of the nc.-1010C > T and nc.-582A > G polymorphisms, is more frequent in the HFE_H63D individuals presenting serum ferritin levels higher than 300 μg/L than in those presenting the HFE_H63D mutation but with normal serum ferritin levels or in the normal control group.Moreover, it was observed that the TG haplotype was associated to increased serum ferritin levels in the overall pool of HFE_H63D individuals. Thus, our data suggest that screening for these polymorphisms could be of interest in order to explain the phenotype. However, this genetic condition seems to have no clinical significance.
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Vicente JR, Gonçalves J, Honrado JP, Randin CF, Pottier J, Broennimann O, Lomba A, Guisan A. A framework for assessing the scale of influence of environmental factors on ecological patterns. ECOLOGICAL COMPLEXITY 2014. [DOI: 10.1016/j.ecocom.2014.10.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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150
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Branco V, Godinho-Santos A, Gonçalves J, Lu J, Holmgren A, Carvalho C. Mitochondrial thioredoxin system as a primary target for mercury compounds. Toxicol Lett 2014. [DOI: 10.1016/j.toxlet.2014.06.234] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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