Publications by authors named "Marcos Sampaio"

Article Synopsis
  • Scientists wanted to see if short meditation could help women get pregnant while using special treatments.
  • They had different groups of women listen to calming audio or join weekly meditation sessions while waiting for pregnancy test results.
  • The study found that neither type of meditation made a difference in how many women got pregnant.
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Objectives: We aimed to explore the radiographic definitions of types of New Bone formation (NBF) by focusing on the terminology, description and location of the findings.

Methods: Three systematic literature reviews were conducted in parallel to identify the radiographic spinal NBF definitions for spondyloarthritis (SpA), Diffuse Idiopathic Skeletal Hyperostosis (DISH) and Osteorathritis (OA). Study characteristics and definitions were extracted independently by two reviewers.

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The hip is a uniquely constrained joint with critical static stability provided by the labrum, capsule and capsular ligaments, and ligamentum teres. The labrum is a fibrocartilaginous structure along the acetabular rim that encircles most of the femoral head. Labral tears are localized based on the clock-face method, which determines the extent of the tear while providing consistent terminology for reporting.

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Article Synopsis
  • Scientists studied a girl with many health problems, like weakness and breathing issues, but they didn't know the cause.
  • They used advanced DNA testing to find changes in her genes, discovering two specific variants linked to her condition.
  • These changes affected how a key gene called SOX8 works, leading to problems that explained her symptoms and showed how complex our genes can be.
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Congenital myopathy with tremor (MYOTREM) is a recently described disorder characterized by mild myopathy and a postural and intention tremor present since early infancy. MYOTREM is associated with pathogenic variants in MYBPC1 which encodes slow myosin-binding protein C, a sarcomere protein with regulatory and structural roles. Here, we describe a family with three generations of variably affected members exhibiting a novel variant in MYBPC1 (c.

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Oculopharyngeal muscular dystrophy (OPMD) is a rare, primarily autosomal dominant, late onset muscular dystrophy commonly presenting with ptosis, dysphagia, and subsequent weakness of proximal muscles. Although OPMD diagnosis can be confirmed with high confidence by genetic testing, the slow progression of OPMD poses a significant challenge to clinical monitoring and a barrier to assessing the efficacy of treatments during clinical trials. Accordingly, there is a pressing need for more sensitive measures of OPMD progression, particularly those which do not require a muscle biopsy.

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Ultrasound (US)-guided musculoskeletal intervention of small joints or joints other than the shoulder, elbow, hip, knee, and ankle can be technically challenging. Small joints produce a narrower landing zone for the needle and a smaller target that may be made even more inaccessible by bulky osteophytes. Sonographic (US) guidance offers important advantages including near-field visualization of the joint and soft tissues, ease of access, portability, ability to compare with the contralateral side, and lack of ionization radiation.

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Background And Objectives: Coenzyme Q (CoQ) is an important electron carrier and antioxidant. The COQ7 enzyme catalyzes the hydroxylation of 5-demethoxyubiquinone-10 (DMQ), the second-to-last step in the CoQ biosynthesis pathway. We report a consanguineous family presenting with a hereditary motor neuropathy associated with a homozygous c.

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Article Synopsis
  • Oculopharyngeal muscular dystrophy (OPMD) is a genetic disorder characterized by symptoms like drooping eyelids, severe swallowing issues, and muscle weakness, making it hard to diagnose atypical cases.
  • Researchers conducted a study using MRI to assess its effectiveness in diagnosing and tracking OPMD progression by evaluating muscle fat replacement in various muscles among patients with OPMD, other muscular dystrophies, and healthy controls.
  • The results indicated that MRI could differentiate OPMD from other conditions based on fat replacement in the tongue, which also correlated with the severity of swallowing difficulties, suggesting MRI could be a useful tool for clinical trials in OPMD.
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The bony pelvis serves as the attachment site for a large number of powerful muscles and tendons that drive lower extremity movement. Organizing the pelvic tendons into groups that share a common function and anatomic location helps the radiologist systematically evaluate these structures for injury, which can be caused by repetitive stress, acute trauma, or failure of degenerated tissues. Tears of the anteromedial adductors around the pubic symphysis and anterior flexors traversing anterior to the hip principally affect younger male athletes.

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Objective: The objective of our study was to compare the osmolality in sequential and single step culture media, used for in vitro human embryo culture, covered with mineral oil and paraffin, in dry and humid incubators.

Methods: We performed a prospective observational study. A total of 120 Petri dishes, with 960 droplets of culture media, were evaluated.

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Objective: Lyophilization is potentially more practical and cost-effective alternative for sperm preservation. However, there are no studies that evaluate the ultrastructure of human spermatozoa after lyophilization. Therefore, the aim of our study was to evaluate the ultrasctructure of lyophilized spermatozoa using Transmission Electron Microscopy.

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Objective: To evaluate the added value of whole spine magnetic resonance imaging (MRI) for disease activity assessment in ankylosing spondylitis (AS) and psoriatic arthritis (PsA).

Method: Spine and sacroiliac joint (SIJ) MRI scans requested by rheumatologists between 2012 and 2018 were screened retrospectively, and patients who had known diagnosis of AS or PsA were included, if the MRI was done for disease activity assessment. All MRI scans were reviewed by two experienced musculoskeletal radiologists independently, blinded to patients' diagnosis and to the other MRI.

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Objective: To present our experience using four consecutive minimal COS (TetraStim) followed by oocyte retrieval and vitrification to increase the number of oocytes in patients with POR for whom oocyte donation is not an option.

Methods: We performed an observational study evaluating 128 poor responders submitted to TetraStim instead of oocyte donation cycles. Patients were submitted to four consecutive minimal COS started at luteal phase, oocyte retrieval, oocyte vitrification/warming, ICSI, endometrial priming and embryo transfer.

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The aim of the study was to evaluate whether selecting embryos for transfer after prolonged culture after thaw (18-24 h) has better pregnancy rates than selecting embryos for transfer after short culture after thaw (2-5 h). We performed a double-blinded, randomized, controlled trial, evaluating 388 patients submitted to ART treatment who had embryos frozen on day-2 and subsequently transferred. All patients received the same endometrial priming with estradiol valerate followed by vaginal progesterone.

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Background: Neurolymphomatosis (NL) is a direct process of invasion of peripheral nerves by lymphoma. It occurs in roughly 5% of patients with lymphoma and represents a particularly difficult diagnostic dilemma when it is the presenting focal manifestation of occult lymphoma.

Case Presentation: We present 3 examples of invasion of the lumbosacral plexus and its branches.

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Objectives: To understand whether psoriasis has disease modifying effects on disease features and/or severity of enthesitis and spine disease in axial SpA (axSpA).

Methods: Patients with a diagnosis axSpA were included. Demographics, patient and physician reported outcomes were collected.

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Patellar maltracking occurs as a result of an imbalance in the dynamic relationship between the patella and trochlea. This is often secondary to an underlying structural abnormality. The clinical evaluation can provide useful clues for the presence of such entity; however, the diagnosis can often be challenging especially in the absence of a documented history of patellar dislocation.

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Objective: The aim of our study was to identify the prevalence of HPV in the semen of men submitted to ART treatment and look into the possible impacts of the virus on sperm parameters.

Methods: Thirty-five patients treated for infertility from March to August 2016 were invited to join the study. Samples with a minimum concentration of 40x106 spermatozoa per milliliter were included in the study.

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Objective: To evaluate COS and oocyte retrieval results in ART treatment cycles initiated at any stage of the menstrual cycle (random start) in cancer patients, who could not postpone the onset of cancer treatment.

Methods: Prospective observational study of 26 women with cancer, with an indication to start cancer treatment within the next 20 days and wishing to preserve their fertility. Ovarian stimulation started immediately with FSH followed by GnRH antagonist for pituitary suppression and GnRH agonist for oocyte maturation.

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Article Synopsis
  • Concerns have been raised about the effects of controlled ovarian stimulation (COS) on endometrial receptivity and pregnancy outcomes in in-vitro fertilization (IVF), leading to the rise of the "freeze-all" strategy, where all embryos are frozen for later transfer.
  • The freeze-all approach aims to avoid high hormone levels during COS and provides a more natural environment for embryo implantation, but initial benefits are mostly observed in specific patient groups.
  • Despite its growing popularity, there is currently insufficient clinical evidence to support the routine use of the freeze-all strategy for a broader range of patients outside of those with specific risks, like ovarian hyperstimulation syndrome.
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Purpose: The purpose of this study is to compare the results of ART treatment in patients with and without endometriosis in a large cohort of patients from different centers over an extented period of time.

Methods: This retrospective study is using data from patients undergoing 27,294 cycles of IVF/ICSI treatment between 1995 and 2011 that were registered in the database of the Latin American Registry maintained by the Latin America Network of Assisted Reproduction.

Results: The mean number of retrieved oocytes was higher in the control group, but the mean number of metaphase II oocytes was similar.

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Article Synopsis
  • * Some patients exhibit suboptimal COS responses despite normal ovarian reserve indicators, highlighting limitations in relying solely on traditional biomarkers like AFC and AMH for predictions.
  • * Exploring genetic factors influencing ovarian sensitivity to gonadotropins could lead to personalized treatment plans, potentially improving success rates and reducing time-to-pregnancy in assisted reproduction.
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