Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where João Francisco Marques-Neto is active.

Publication


Featured researches published by João Francisco Marques-Neto.


Clinical Rheumatology | 2001

Undifferentiated Spondyloarthropathies: A 2-Year Follow-up Study

Percival D. Sampaio-Barros; Manoel Barros Bertolo; Maria Helena Stangler Kraemer; João Francisco Marques-Neto; Adil Muhib Samara

Abstract: The aim of the study was to analyse the 2-year follow-up of a series of patients with the diagnosis of undifferentiated spondyloarthropathy (uSpA). A prospective study was carried out analysing 68 patients with symptomatic uSpA who fulfilled the European Spondylarthropathy Study Group (ESSG) criteria for seronegative spondyloarthropathies (SpA) and were aged between 18 and 50 years. Inclusion criteria included inflammatory low back pain (ILBP) (without radiographic sacroiliitis), asymmetric oligoarthritis (predominantly affecting large joints in the lower limbs) and heel enthesopathies (Achilles tendinitis and/or plantar fasciitis). Imaging methods included pelvic radiography (at study entry and after 2 years) and calcaneal radiography (at study entry). There was a predominance of male gender (78%), caucasoid race (72%) and positive HLA-B27 (54%), with a mean age of 31 years and mean disease duration of 5 years. The first disease manifestations were ILBP (49%), asymmetric oligoarthritis (35%) and heel enthesopathies (16%). A positive family history of a definite SpA was mentioned by 9% of the patients. Seventeen patients (25%) scored 5 points in the Amor set of SpA criteria; logistic regression analysis showed that HLA-B27, heel enthesopathy and asymmetric oligoarthritis were significantly associated with Amor criteria ≥6, whereas ILBP was associated with Amor criteria <6. Male sex was associated with heel enthesopathies (p = 0.041) and ankle involvement (p = 0.015). Caucasoid race was associated with ILBP (p = 0.015) and buttock pain (p = 0.047). Positive HLA-B27 was associated with wrist involvement (p = 0.019) and Amor criteria ≥6 (p = 0.001). After a 2-year follow-up the following outcomes were observed: uSpA 75%; disease remission 13%; ankylosing spondylitis 10%; psoriatic arthritis 2%. Logistic regression analysis showed that buttock pain and positive HLA-B27 (trend) were statistically associated with progression to a definite SpA. In conclusion, uSpA can represent a provisional diagnosis in the group of SpA and a systematic follow-up is necessary in order to better establish the different patterns of the disease.


The Journal of Rheumatology | 2012

Survival, Causes of Death, and Prognostic Factors in Systemic Sclerosis: Analysis of 947 Brazilian Patients

Percival D. Sampaio-Barros; Adriana Bruscato Bortoluzzo; Roberta G. Marangoni; Luiza F. Rocha; Ana Paula Toledo Del Rio; Adil Muhib Samara; Natalino Hajime Yoshinari; João Francisco Marques-Neto

Objective. To analyze survival, prognostic factors, and causes of death in a large cohort of patients with systemic sclerosis (SSc). Methods. From 1991 to 2010, 947 patients with SSc were treated at 2 referral university centers in Brazil. Causes of death were considered SSc-related and non-SSc-related. Multiple logistic regression analysis was used to identify prognostic factors. Survival at 5 and 10 years was estimated using the Kaplan-Meier method. Results. One hundred sixty-eight patients died during the followup. Among the 110 deaths considered related to SSc, there was predominance of lung (48.1%) and heart (24.5%) involvement. Most of the 58 deaths not related to SSc were caused by infection, cardiovascular or cerebrovascular disease, and cancer. Male sex, modified Rodnan skin score (mRSS) > 20, osteoarticular involvement, lung involvement, and renal crisis were the main prognostic factors associated to death. Overall survival rate was 90% for 5 years and 84% for 10 years. Patients presented worse prognosis if they had diffuse SSc (85% vs 92% at 5 yrs, respectively, and 77% vs 87% at 10 yrs, compared to limited SSc), male sex (77% vs 90% at 5 yrs and 64% vs 86% at 10 yrs, compared to female sex), and mRSS > 20 (83% vs 90% at 5 yrs and 66% vs 86% at 10 yrs, compared to mRSS < 20). Conclusion. Survival was worse in male patients with diffuse SSc, and lung and heart involvement represented the main causes of death in this South American series of patients with SSc.


International Journal of Clinical Practice | 2008

A comparison of the effect of alendronate and risedronate on bone mineral density in postmenopausal women with osteoporosis: 24‐month results from FACTS‐International

David M. Reid; David J. Hosking; D. Kendler; Maria L. Brandi; John D. Wark; João Francisco Marques-Neto; G. Weryha; Nadia Verbruggen; C. M. Hustad; E. M. Mahlis; Mary E. Melton

Objectives:  To compare alendronate 70 mg once weekly (OW) with risedronate 35 mg OW with respect to change in bone mineral density (BMD), biochemical markers and upper gastrointestinal (UGI) tolerability over 24 months.


The Journal of Rheumatology | 2009

HLA-G Expression in the Skin of Patients with Systemic Sclerosis

Isabela Jubé Wastowski; Percival D. Sampaio-Barros; Eliane Maria Ingrid Amstalden; Gustavo Martelli Palomino; João Francisco Marques-Neto; Janaina C.O. Crispim; Ana Cristina Biral; Diane M. Rassi; Edgardo D. Carosella; Philippe Moreau; Eduardo A. Donadi

Objective. To determine HLA-G expression in skin biopsies from patients with systemic sclerosis (SSc), and its association with epidemiological, clinical, and laboratory variables and survival. Methods. Paraffin-embedded skin biopsies obtained from 21 SSc patients (14 limited SSc, 7 diffuse SSc) and from 28 healthy controls were studied. HLA-G expression was evaluated by immunohistochemistry. Results. HLA-G molecules were detected in 57% of skin biopsies from patients with SSc (9 from limited SSc, 3 from diffuse SSc), whereas no control sample expressed HLA-G (p = 0.000004). In patients, HLA-G molecules were consistently observed within epidermal and some dermal cells. HLA-G expression was associated with a lower frequency of vascular cutaneous ulcers (p = 0.0004), telangiectasias (p = 0.008), and inflammatory polyarthralgia (p = 0.02). After a 15-year followup, SSc patients who exhibited HLA-G survived longer than patients who did not. Conclusion. HLA-G is expressed in skin biopsies from patients with SSc, and this is associated with a better disease prognosis. This suggests a modulatory role of HLA-G in SSc, as observed in other skin disorders.


Clinical Drug Investigation | 2006

Alendronic Acid Produces Greater Effects than Risedronic Acid on Bone Density and Turnover in Postmenopausal Women with Osteoporosis

David M. Reid; David J. Hosking; David Kendler; Maria L. Brandi; John D. Wark; Georges Weryha; João Francisco Marques-Neto; Keavy A. Gaines; Nadia Verbruggen; Mary E. Melton

AbstractBackground: The objective of the study was to evaluate the effects of alendronic acid once weekly relative to risedronic acid once weekly on bone mineral density (BMD), markers of bone turnover and tolerability in the treatment of osteoporosis in postmenopausal women. Methods: This was a randomised, double-masked, double-dummy multicentre international study (75 centres in 27 countries in Europe, the Americas and Asia-Pacific). A total of 1303 women were screened and 936 with low bone density (T-score ≤−2.0 at the spine, hip trochanter, total hip or femoral neck) were randomised; 91% (n = 854) completed the study. Patients were randomised to treatment with either active alendronic acid 70mg weekly (Fosamax®) and placebo identical to risedronic acid weekly or active risedronic acid 35mg weekly (Actonel®) and placebo identical to alendronic acid weekly for 12 months. The primary efficacy endpoint was the percentage change from baseline in hip trochanter BMD at 12 months. Secondary endpoints included the percentage change from baseline in lumbar spine, total hip and femoral neck BMD; biochemical markers of bone turnover (including serum bone-specific alkaline phosphatase [BSAP] and urinary type I collagen N-telopeptides [NTx]); and safety and tolerability as assessed by reporting of adverse experiences. Results: Alendronic acid produced greater increases in BMD than did risedronic acid at 12 months at all sites measured. Mean percentage increases from baseline in hip trochanter BMD at month 12 were 3.56% and 2.71% in the alendronic acid and risedronic acid groups, respectively (treatment difference [95% CI]: 0.83% [0.22, 1.45; p = 0.008]). Mean percentage increases from baseline were greater with alendronic acid than risedronic acid at the lumbar spine, total hip and femoral neck BMD at month 12 (p = 0.002, p < 0.001, p = 0.039, respectively). Increases in BMD with alendronic acid compared with risedronic acid were also significantly greater at 6 months at the trochanter and total hip. There was a greater reduction in bone turnover with alendronic acid compared with risedronic acid: NTx decreased 58% with alendronic acid compared with 47% with risedronic acid at 12 months (p < 0.001); and BSAP decreased 45% with alendronic acid compared with 34% with risedronic acid at 12 months (p < 0.001). Overall tolerability and upper gastrointestinal tolerability were similar for both agents. Conclusions: Alendronic acid once weekly produced greater BMD increases at both hip and spine sites and greater reductions in bone turnover relative to risedronic acid once weekly. Both agents were well tolerated with no significant difference in upper gastrointestinal adverse experiences. Clinicians should consider these results when making treatment decisions for postmenopausal women with osteoporosis.


Lupus | 2009

Acute acalculous cholecystitis in juvenile systemic lupus erythematosus.

Ja Mendonça; João Francisco Marques-Neto; P Prando; Simone Appenzeller

Small- and medium-vessel vasculitis is a common manifestation in systemic lupus erythematosus (SLE) and may occur in any organ. However, acute acalculous cholecystitis is a rare abdominal manifestation in SLE, especially in children. We report a case of a 12-year-old patient who initially presented with AAC and seizure. Follow-up investigation diagnosed SLE, and brain magnetic resonance imaging had hyperintense white matter lesions in cortico-subcortical regions. The patient was successfully treated with pulse methylprednisolone and cyclophosphamide without surgical intervention.


Clinical Rheumatology | 2005

Camurati-Engelmann disease: failure of response to bisphosphonates: report of two cases

Gláucio Ricardo Werner de Castro; Simone Appenzeller; João Francisco Marques-Neto; Manoel Barros Bertolo; Adil Muhib Samara; Ibsen Bellini Coimbra

Camurati-Engelmann disease is a rare bone disorder characterized by cortical thickening of the diaphysis of tubular bones, with sparing of the epiphysis. It has variable degrees of penetrance and expression, but may be very disabling for the affected individuals who manifest the painful symptoms. The authors report on two women with typical presentation of severe Camurati-Engelmann disease whose treatment with bisphosphonates failed to add any improvement beyond that elicited by corticosteroids alone.


Rheumatology | 2013

Systemic sclerosis sine scleroderma: distinct features in a large Brazilian cohort

Roberta G. Marangoni; Luiza F. Rocha; Ana Paula Toledo Del Rio; Natalino Hajime Yoshinari; João Francisco Marques-Neto; Percival D. Sampaio-Barros

OBJECTIVE Systemic sclerosis sine scleroderma (ssSSc) is an infrequent SSc variant characterized by visceral and immunological manifestations of SSc in the absence of clinically detectable skin involvement. We sought to delineate the characteristics of ssSSc in a cohort of Brazilian patients and contrast them with those in the literature. METHODS SSc patients seen at two academic medical centres in Brazil were retrospectively analysed. Patients were classified as ssSSc if they presented with RP, positive ANAs and at least one visceral involvement typical of SSc in the absence of skin thickening. Demographics, clinical and laboratory data were obtained by chart review. Literature review was performed by searching available original studies up until June 2012. RESULTS Among the 947 consecutive patients with SSc, 79 (8.3%) were classified as ssSSc. Oesophagus was the most frequently affected organ (83.1%), followed by pulmonary involvement (63.2%). Compared with the limited cutaneous form of SSc, telangiectasia was the only variable significantly different after multivariate logistic regression analyses (odds ratio 0.46; 95% CI 0.27, 0.81). Compared with the diffuse cutaneous form of SSc, multivariate analyses revealed that ssSSc patients were less likely to be male (odds ratio 0.15; 95% CI 0.04, 0.57), have digital ulcers (odds ratio 0.26; 95% CI 0.13, 0.51) or anti-Scl70 antibodies (odds ratio 0.19; 95% CI 0.07, 0.55) and less frequently treated with CYC (odds ratio 0.23; 95% CI 0.12, 0.43). These features were comparable to those in the published literature. CONCLUSION In this series, patients with ssSSc had a relatively mild disease with good prognosis.


Rheumatology International | 2012

Increased levels of rheumatoid factors after TNF inhibitor in rheumatoid arthritis

José Alexandre Mendonça; João Francisco Marques-Neto; Adil Muhib Samara; Simone Appenzeller

Targeted inhibition of tumor necrosis factor-α (TNF-α) is an effective therapy in rheumatoid arthritis (RA). In some rare cases, autoimmune phenomena, including drug-induced lupus and vasculitis, is described. However, the immunological mechanisms underlying the development of autoimmunity are unknown. We report 3 patients that developed autoimmune phenomena while in use of TNF-α inhibitor, showing concomitant increase in rheumatoid factor (RF). We hypothesize that the increase in RF several months prior to the occurrence of vasculitis may help identifying other patients at risk for the development of vasculitis secondary to these medications.


Disease Markers | 2009

Association of Interferon-Gamma Gene Polymorphism (+874 T/A) with Systemic Sclerosis

Isabela Jubé Wastowski; Percival D. Sampaio-Barros; Gustavo Martelli-Palomino; João Francisco Marques-Neto; J. C. O. Crispim; Diane Meyre Rassi; Eduardo A. Donadi

Isabela J. Wastowskia,c,∗, Percival D. Sampaio-Barrosb,d, Gustavo Martelli-Palominoa, Joao Francisco Marques-Neto b, Janaina C.O. Crispim a, Diane M. Rassi a and Eduardo A. Donadi a Program of Basic and Applied Immunology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Brazil Unit of Rheumatology, Department of Internal Medicine, Faculty of Medical Sciences, State University of Campinas, Campinas, Brazil Master’s Program in Genetics, Pontifical Catholic University of Goias, Goiânia, Brazil Division of Rheumatology, University of Sao Paulo, Sao Paulo, Brazil

Collaboration


Dive into the João Francisco Marques-Neto's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar

Adil Muhib Samara

State University of Campinas

View shared research outputs
Top Co-Authors

Avatar

Simone Appenzeller

State University of Campinas

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Tiago Nardi Amaral

State University of Campinas

View shared research outputs
Top Co-Authors

Avatar

Aline Tamires Lapa

State University of Campinas

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

A.P. del Rio

State University of Campinas

View shared research outputs
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge