Publications by authors named "Denis Mariano Goulart"

Immunologic thrombocytopenic purpura (ITP) is a condition that affects four to 18 per 100 000 children every year. In most cases, spontaneous remission occurs, but splenectomy may be proposed. Exploring the site of platelet sequestration can help to better predict potential poor responders to splenectomy, but In-radiolabeled platelet scintigraphy (IPS) can be difficult to perform in children with very few platelets.

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Purpose: The aim of this study was to investigate the correlations between areal bone mineral density (aBMD) and body composition measured by two dual-energy X-ray absorptiometers (DXA), the DMS Stratos® (STR) and the Hologic Horizon A® (HRZ), and then generate cross-calibration equations between the two scanners.

Methods: Repeat scans were obtained from 251 adults (85 % female), 36 ± 14 years old with mean body mass index (BMI) of 28.7 ± 11.

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Objective: Developing a scoring assessment tools for the determination of low bone mass for age at lumbar spine and hip in patients with anorexia nervosa (AN).

Methods: The areal bone mineral density (aBMD) was determined with dual-energy X-ray absorptiometry (DXA). In 331 women with AN and 121 controls, aged from 14.

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Bariatric surgery induces a decrease in areal bone mineral density (aBMD), but the long-term effect on trabecular and cortical volumetric bone mineral density (vBMD) has not been well assessed. The main aim of this 5-year longitudinal study was to investigate the changes following sleeve gastrectomy (SG) in aBMD, bone turnover markers and trabecular and cortical vBMD. Forty-five patients with obesity were assessed before and 1, 2 and 5 years after SG.

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Systematic revascularization of asymptomatic coronary artery stenosis before transcatheter aortic valve replacement (TAVR) is controversial. The purpose of this study was to evaluate the feasibility and safety of functional evaluation of coronary artery disease (CAD) followed by selective ischemia-guided percutaneous coronary revascularization following TAVR. This prospective, bi-centric, single-arm, open-label trial included all patients with severe aortic stenosis (AS) eligible for TAVR and with significant CAD defined as ≥1 coronary stenosis ≥ 70%.

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  • Kleine-Levin syndrome (KLS) is a rare disorder characterized by recurring episodes of excessive sleepiness and cognitive/behavioral issues, potentially linked to inflammation, prompting a study on microglia activation using PET imaging.
  • Researchers conducted PET scans on KLS patients and controls, focusing on specific brain regions to measure microglial activation and compare conditions during symptomatic and asymptomatic phases.
  • The study found no significant differences in microglial activation between KLS patients and controls or between symptomatic and asymptomatic periods, suggesting a lack of neuroinflammation in KLS and indicating the need for further research on potential biomarkers.
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  • Narcolepsy type 1 (NT1) is linked to the loss of orexin-producing neurons in the hypothalamus, potentially due to an immune response, but past studies showed no inflammation during later stages of the disease.
  • This research investigated microglia density in the hypothalamus and thalamus of NT1 patients using PET imaging, compared to control subjects, while also exploring relationships between microglial activity and disease factors like duration and severity.
  • Results indicated no significant differences in microglial density between NT1 patients and controls in the hypothalamus and thalamus, but lower overall brain microglial activity was observed in NT1 patients, raising questions about the disease's immune mechanisms and its onset
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Interim analysis of the DOSISPHERE-01 study demonstrated a strong improvement in response and overall survival (OS) on using Y-loaded glass microspheres with personalized dosimetry compared with standard dosimetry in patients with nonoperable locally advanced hepatocellular carcinoma. This report sought to provide a long-term analysis of OS. In this phase II study (ClinicalTrials.

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  • Aging leads to a decrease in lean tissue mass (LTM) and muscle strength in women with obesity, contributing to sarcopenic obesity (SO).
  • The study found that as women aged, there was a redistribution of LTM and fat mass (FM) from the limbs to the trunk, and physical performance metrics like muscle strength and function also declined.
  • Despite these changes, the prevalence of women with obesity affected by sarcopenic obesity remained low, at 15% or less, even among those over 60 years old.
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The objective of the study was to assess the agreement between the Stratos (DMS) and QDR 4500A (Hologic) DXAs in determining whole body and regional aBMD, as well as whole body composition. Fifty-five individuals (46 women: 84%) with a mean age of 41 ± 13.0 years (range: 20 to 64) and a mean BMI of 31.

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  • Spinal cord injury (SCI) leads to bone loss and higher fracture risk, prompting a study to assess the impact of whole-body vibration (WBV) on bone health in chronic SCI patients.
  • Fourteen participants were split into two groups: one receiving WBV treatment twice a week for six months and the other as a control.
  • After six months, there were no significant changes in bone density or biological markers in either group, but the WBV group did experience a notable reduction in body fat compared to controls, suggesting the need for further investigation into different WBV approaches.
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  • Bariatric surgery, specifically sleeve gastrectomy (SG), causes bone loss, but the exact mechanisms remain unclear.
  • A study on 83 obesity patients tracked changes in bone mineral density (aBMD) and bone turnover markers at 1, 12, and 24 months post-surgery.
  • Findings indicated that bone turnover increased over time, with a significant decrease in aBMD primarily observed in the hip region, attributed mainly to weight loss rather than changes in specific biological markers like periostin, sclerostin, and semaphorin 4D.
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  • This study evaluates the effectiveness of 18-FDG PET scans for cancer detection in heart transplant patients, using data from 303 scans performed on 158 individuals.
  • Results indicated a sensitivity of 81% and specificity of 90%, with significant rates of both false positives (FP) and false negatives (FN) identified in the cancer screening process.
  • Notably, factors such as graft-PET delay and elevated CRP levels were significantly linked to false positive results, suggesting they could help predict the likelihood of FP cases in future screenings.
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  • * Participants will undergo a specially modified fPET session to assess brain activity during auditory and emotional stimulation while being monitored for 18 months post-exam.
  • * The research will analyze regional brain activation in relation to recovery outcomes, potentially improving prognostic capabilities in coma patients based on the Coma Recovery Scale-Revisited (CRS-R).
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Spinal cord injury (SCI) induces severe losses of trabecular and cortical volumetric bone mineral density (vBMD), which cannot be discriminated with conventional dual-energy X-ray absorptiometry (DXA) analysis. The objectives were to: (i) determine the effects of SCI on areal BMD (aBMD) and vBMD determined by advanced 3D-DXA-based methods at various femoral regions and (ii) model the profiles of 3D-DXA-derived parameters with the time since injury. Eighty adult males with SCI and 25 age-matched able-bodied (AB) controls were enrolled in this study.

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Background: Transarterial radioembolization (TARE) has recently been recognized as a bridging/downstaging therapy to surgery for early hepatocellular carcinomas (HCCs) with high rates of complete pathological necrosis (CPN) on liver explants. In patients with portal vein tumoral thrombus (PVTT), multifocal or large tumors, TARE has mainly a palliative role and surgery remains controversial in this poor-prognosis population. Personalized dosimetry recently proved to outperform standard dosimetry used in prior negative Y90 randomized-controlled trials.

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Background: Aromatic l-amino acid decarboxylase deficiency (AADCD) is a rare, early-onset, dyskinetic encephalopathy mostly reflecting a defective synthesis of brain dopamine and serotonin. Intracerebral gene delivery (GD) provided a significant improvement among AADCD patients (mean age, ≤6 years).

Objective: We describe the clinical, biological, and imaging evolution of two AADCD patients ages >10 years after GD.

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Sleeve gastrectomy (SG) induces weight loss but its effects on body composition (BC) are less well known. The aims of this longitudinal study were to analyse the BC changes from the acute phase up to weight stabilization following SG. Variations in the biological parameters related to glucose, lipids, inflammation, and resting energy expenditure (REE) were concomitantly analysed.

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  • Dynamic acquisition in myocardial perfusion imaging enhances absolute quantification of heart blood flow, which is beneficial for patients with complex coronary artery disease, and is a more accessible option than PET due to its lower cost and availability.
  • Dynamic cardiac SPECT represents an advanced approach to comprehensive perfusion imaging, facilitating more accurate assessments, yet requires careful attention to various technical steps to avoid potential pitfalls, including patient-related and technical artifacts.
  • The review emphasizes key acquisition parameters such as pharmacological stress and radiopharmaceuticals, along with critical processing factors like image-derived input functions and motion, while advocating for improved standardization in procedures to enhance the reliability of dynamic cardiac SPECT.
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The prevalence of sarcopenia in patients with obesity varies according to the definition used. The purpose of our study was to: (i) determine the prevalence of sarcopenia in terms of lean tissue mass in older women with obesity using the current cut-offs, (ii) redefine a specific cut-off for low lean tissue mass (LLTM), and (iii) re-determine the prevalence of LLTM using this new cut-off. Appendicular lean mass (ALM) and the ALM index [ALM/height: ALMI(h)] and ALMI/body mass index [ALMI(BMI)] were determined in 791 women with or without obesity.

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Purpose: The first objective of the study was to assess the agreement between the Stratos DR (DMS) and the GE Prodigy (GE) DXAs in determining femoral neck, total hip and lumbar spine aBMD. The second objective was to assess the potential impact of leg positioning (hip flexed at 90° or not) on lumbar spine aBMD.

Methods: Forty-six individuals (n=42 women, 91.

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Purpose: Differentiating brain metastasis recurrence from radiation necrosis can be challenging during MRI follow-up after stereotactic radiotherapy. [ 18 F]-FDG is the most available PET tracer, but standard images performed 30 to 60 minutes postinjection provide insufficient accuracy. We compared the diagnostic performance and interobserver agreement of [ 18 F]-FDG PET with delayed images (4-5 hours postinjection) with the ones provided by standard and dual-time-point imaging.

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Objectives: The two-fold aim of this study was: (i) to determine the effects of undernutrition on the myokines in patients with restrictive anorexia nervosa (AN) and (ii) to examine the potential link between myokines and bone parameters.

Methods: In this study, 42 young women with restrictive AN and 42 age-matched controls (CON) (mean age, 18.5 ± 4.

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Primary Objective: Recently, selective internal radiation therapy using yttrium-90 (Y90) glass microspheres (TheraSphere™) was approved for reimbursement by health authorities in France. The PROACTIF study aims to gather data on effectiveness, patient quality of life, and safety with use of Y90 glass microspheres in real-world clinical settings in France.

Inclusion Criteria: Patient with a diagnosis of hepatocellular carcinoma (HCC), intrahepatic cholangiocarcinoma (iCC), and/or metastatic colorectal cancer (mCRC) who was treated with a dose of Y90 glass microspheres that has been reimbursed in France and who do not oppose use of their personal medical data.

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