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1.
J Anim Ecol ; 92(2): 324-337, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36059124

RESUMO

Studying species interactions in nature often requires elaborated logistics and intense fieldwork. The difficulties in such task might hinder our ability to answer questions on how biotic interactions change with the environment. Fortunately, a workaround to this problem lies within scientific collections. For some animals, the inspection of preserved specimens can reveal the scars of past antagonistic encounters, such as predation attempts. A common defensive behaviour that leaves scars on animals is autotomy, the loss of a body appendage to escape predation. By knowing the collection site of preserved specimens, it is possible to assess the influence of organismal biology and the surrounding environment in the occurrence of autotomy. We gathered data on tail loss for 8189 preserved specimens of 33 snake and 11 amphisbaenian species to investigate biological and environmental correlates of autotomy in reptiles. We applied generalized linear mixed effect models to evaluate whether body size, sex, life-stage, habitat use, activity pattern, biome, tropicality, temperature and precipitation affect the probability of tail loss in limbless reptiles. We observed autotomy in 23.6% of examined specimens, with 18.7% of amphisbaenian and 33.4% of snake specimens showing tail loss. The probability of tail loss did not differ between snakes and amphisbaenians, but it was higher among large-sized specimens, particularly in adults and females. Chance of tail loss was higher for diurnal and arboreal species, and among specimens collected in warmer regions, but it was unaffected by biome, precipitation, and tropicality. Autotomy in limbless reptiles was affected by size-dependent factors that interplay with ontogeny and sexual dimorphism, although size-independent effects of life-stage and sex also shaped behavioural responses to predators. The increase in probability of tail loss with verticality and diurnality suggests a risk-balance mechanism between species habitat use and activity pattern. Although autotomy is more likely in warmer regions, it seems unrelated to seasonal differences in snakes and amphisbaenians activity. Our findings reveal several processes related to predator-prey interactions involving limbless reptiles, demonstrating the importance of scientific collections to unveil ecological mechanisms at different spatio-temporal scales.


Assuntos
Lagartos , Feminino , Animais , Lagartos/fisiologia , Cauda/fisiologia , Comportamento Predatório , Cicatriz , Ecossistema
2.
Gan To Kagaku Ryoho ; 50(11): 1191-1194, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38056872

RESUMO

Barrett's esophagus(BE)is a precursor to adenocarcinoma of the esophagogastric transition. Thus, endoscopic surveillance is essential for the early diagnosis of dysplasia and neoplasm, allowing proper therapeutic. However, during the COVID-19 pandemic, surveillance frequently failed. We present a case of a male, caucasian, 65 years old, patient with early adenocarcinoma in BE. Submitted an endoscopic resection, but due to the COVID-19 pandemic patient lost the follow-up endoscopic exams. Returned with a T3N1 adenocarcinoma esophagus in resection area. The present report illustrates the consequences of the failure in follow-up after submucosal resection in COVID-19 pandemic context.


Assuntos
Adenocarcinoma , Esôfago de Barrett , COVID-19 , Neoplasias Esofágicas , Masculino , Humanos , Idoso , Esôfago de Barrett/cirurgia , Esôfago de Barrett/patologia , Seguimentos , Pandemias , Esofagoscopia , Neoplasias Esofágicas/cirurgia , Neoplasias Esofágicas/patologia , Adenocarcinoma/cirurgia , Adenocarcinoma/patologia
3.
Lupus ; 31(14): 1829-1833, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36274494

RESUMO

Pregnancy and lactation-associated osteoporosis (PLO) is a rare disease that occurs in late pregnancy or early postpartum and is associated with multiple vertebral fractures. We present a case of a 34-year-old woman with a history of Systemic Lupus Erythematosus and Antiphospholipid Syndrome, who started postpartum back pain. After an ineffective response to analgesic escalation, she performed imaging exams with evidence of multiple dorsal and lumbar vertebral fractures. After an exhaustive etiological study, PLO represented the most likely diagnosis. Early diagnosis, interruption of breastfeeding, and initiation of targeted anti-osteoporotic therapy are essential for symptomatic control, increase the quality of life of these patients, and prevent new fractures in the future.


Assuntos
Lúpus Eritematoso Sistêmico , Osteoporose , Complicações na Gravidez , Feminino , Humanos , Gravidez , Adulto , Aleitamento Materno , Qualidade de Vida , Densidade Óssea , Lúpus Eritematoso Sistêmico/complicações , Osteoporose/complicações , Lactação
4.
J Surg Res ; 264: 249-259, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33839340

RESUMO

BACKGROUND: Corrosive ingestion is a significant challenge for healthcare systems. Limited data are available regarding the best treatments, and there remains a lack of consensus about the optimal surgical approach and its outcomes. This study aims to review the current literature and show a single institution's experience regarding the surgical treatment of esophageal stenosis due to corrosive substance ingestion. METHODS: A retrospective review that accounted for demographics, psychiatric profiles, surgical procedures, and outcomes was performed. A systematic review of the literature was performed using PubMed. RESULTS: In total, 27 surgical procedures for esophageal stenosis due to corrosive substance ingestion were performed from 2010 to 2019. Depression and drug abuse were diagnosed in 30% and 22% of the included patients, respectively. Esophagectomies and esophageal bypasses were performed in 13 and 14 patients, respectively. No 30-day mortality was recorded. CONCLUSION: Surgical intervention either by esophagectomy or esophageal bypass results in durable relief from dysphagia. However, successful clinical outcomes depend on a high-quality multidisciplinary network of esophageal and thoracic surgeons, intensivists, psychologists, psychiatrists, and nutritional teams.


Assuntos
Queimaduras Químicas/terapia , Cáusticos/intoxicação , Estenose Esofágica/terapia , Esofagectomia/estatística & dados numéricos , Comportamento Autodestrutivo/terapia , Terapia Comportamental , Queimaduras Químicas/etiologia , Queimaduras Químicas/mortalidade , Queimaduras Químicas/psicologia , Depressão/complicações , Depressão/epidemiologia , Depressão/psicologia , Depressão/terapia , Estenose Esofágica/induzido quimicamente , Estenose Esofágica/mortalidade , Estenose Esofágica/psicologia , Esôfago/patologia , Esôfago/cirurgia , Humanos , Apoio Nutricional , Equipe de Assistência ao Paciente , Fatores de Risco , Comportamento Autodestrutivo/etiologia , Comportamento Autodestrutivo/mortalidade , Comportamento Autodestrutivo/psicologia , Transtornos Relacionados ao Uso de Substâncias/complicações , Transtornos Relacionados ao Uso de Substâncias/etiologia , Transtornos Relacionados ao Uso de Substâncias/psicologia , Transtornos Relacionados ao Uso de Substâncias/terapia , Resultado do Tratamento
5.
New Phytol ; 221(1): 32-49, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-29983005

RESUMO

Contents Summary 32 I. The importance of plant carbon metabolism for climate change 32 II. Rising atmospheric CO2 and carbon metabolism 33 III. Rising temperatures and carbon metabolism 37 IV. Thermal acclimation responses of carbon metabolic processes can be best understood when studied together 38 V. Will elevated CO2 offset warming-induced changes in carbon metabolism? 40 VI. No plant is an island: water and nutrient limitations define plant responses to climate drivers 41 VII. Conclusions 42 Acknowledgements 42 References 42 Appendix A1 48 SUMMARY: Plant carbon metabolism is impacted by rising CO2 concentrations and temperatures, but also feeds back onto the climate system to help determine the trajectory of future climate change. Here we review how photosynthesis, photorespiration and respiration are affected by increasing atmospheric CO2 concentrations and climate warming, both separately and in combination. We also compile data from the literature on plants grown at multiple temperatures, focusing on net CO2 assimilation rates and leaf dark respiration rates measured at the growth temperature (Agrowth and Rgrowth , respectively). Our analyses show that the ratio of Agrowth to Rgrowth is generally homeostatic across a wide range of species and growth temperatures, and that species that have reduced Agrowth at higher growth temperatures also tend to have reduced Rgrowth , while species that show stimulations in Agrowth under warming tend to have higher Rgrowth in the hotter environment. These results highlight the need to study these physiological processes together to better predict how vegetation carbon metabolism will respond to climate change.


Assuntos
Carbono/metabolismo , Mudança Climática , Plantas/metabolismo , Aclimatação , Dióxido de Carbono , Fotossíntese/fisiologia , Transpiração Vegetal , Temperatura
6.
Adv Exp Med Biol ; 1059: 137-153, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29736572

RESUMO

In recent times, the field of tissue engineering and regenerative medicine (TERM) has considerably increased the extent of therapeutic strategies for clinical application in orthopedics. However, TERM approaches have its rules and requirements, in the respect of the biologic response of each tissue and bioactive agents which need to be considered, respected, and subject of ongoing studies. Different medical devices/products have been prematurely available on the market and used in clinics with limited success. However, other therapeutics, when used in a serious and evidence-based approach, have achieved considerable success, considering the respect for solid expectations from doctors and patients (when properly informed).Orthobiologics has appeared as a recent technological trend in orthopedics. This includes the improvement or regeneration of different musculoskeletal tissues by means of using biomaterials (e.g., hyaluronic acid), stem cells, and growth factors (e.g., platelet-rich plasma). The potential symbiotic relationship between biologic therapies and surgery makes these strategies suitable to be used in one single intervention.However, herein, the recent clinical studies using hyaluronic acid (HA) in the treatment of orthopedic conditions will mainly be overviewed (e.g., osteochondral lesions, tendinopathies). The possibilities to combine different orthobiologic agents as TERM clinical strategies for treatment of orthopedic problems will also be briefly discussed.


Assuntos
Ácido Hialurônico/uso terapêutico , Artropatias/tratamento farmacológico , Tendinopatia/tratamento farmacológico , Terapia Biológica , Ensaios Clínicos como Assunto , Terapia Combinada , Previsões , Humanos , Ácido Hialurônico/administração & dosagem , Ácido Hialurônico/química , Injeções Intra-Articulares , Osteoartrite/tratamento farmacológico
7.
Neotrop Entomol ; 53(3): 514-530, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38687425

RESUMO

The concept of Ecosystem Services (ES) recognizes the importance of natural ecosystems in supporting human well-being. Hymenoptera, a diverse group of insects including ants, bees, and wasps, play crucial roles in providing ESs. Despite their significance, the provision of ESs by Hymenoptera is often undervalued, leading to ecosystem degradation and loss of important services. This study focuses on the association between Hymenoptera and a rupicolous bromeliad species (Encholirium spectabile) and explores the ESs promoted directly and indirectly by these insects. The study area is located in the Caatinga region of Brazil, characterized by irregular rainfall and a dry season. The results show that Hymenoptera, particularly bees, ants, and wasps, provide a range of ESs including pollination, honey production, pest control, cultural symbolism, and educational value. These services are vital for plant reproduction, food production, and ecosystem functioning in both seasons; there are no differences in species richness between seasons, but rather in species composition. Understanding the importance of Hymenoptera for ESs is crucial for informing conservation and management practices to ensure the sustainability of natural ecosystems. The study highlights the need for conservation actions to protect the intricate ecological relationships between Hymenoptera and bromeliads, which indirectly support ESs by providing habitat and resources, especially during droughts when resources are scarce in the region. By recognizing the importance of bromeliads in supporting Hymenopteran communities, conservation efforts can focus on preserving these critical ecological interactions and maintaining ES provision.


Assuntos
Bromeliaceae , Ecossistema , Himenópteros , Animais , Brasil , Himenópteros/fisiologia , Polinização , Abelhas , Estações do Ano , Vespas/fisiologia , Formigas
8.
Cancers (Basel) ; 16(17)2024 Aug 29.
Artigo em Inglês | MEDLINE | ID: mdl-39272878

RESUMO

Genome-wide association studies (GWASs) have revealed numerous loci associated with breast cancer risk, yet the precise causal variants, their impact on molecular mechanisms, and the affected genes often remain elusive. We hypothesised that specific variants exert their influence by affecting cis-regulatory alternative splice elements. An analysis of splicing quantitative trait loci (sQTL) in healthy breast tissue from female individuals identified multiple variants linked to alterations in splicing ratios. Through colocalisation analysis, we pinpointed 43 variants within twelve genes that serve as candidate causal links between sQTL and GWAS findings. In silico splice analysis highlighted a potential mechanism for three genes-FDPS, SGCE, and MRPL11-where variants in proximity to or on the splice site modulate usage, resulting in alternative splice transcripts. Further in vitro/vivo studies are imperative to fully understand how these identified changes contribute to breast oncogenesis. Moreover, investigating their potential as biomarkers for breast cancer risk could enhance screening strategies and early detection methods for breast cancer.

9.
Eur J Case Rep Intern Med ; 10(1): 003721, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36819656

RESUMO

Diffuse idiopathic skeletal hyperostosis (DISH) and axial spondyloarthritis (axial SpA) are differential diagnoses of lower back pain. While the latter is considered to be an inflammatory disease, DISH is thought to be a metabolic condition. The authors report a case of a 34-year-old man who presented with a one-year history of axial lower back pain associated to migratory polyarthritis, buttock and heel pain. Imaging revealed contiguous calcification of the anterior longitudinal ligament of the cervical segment, meeting major criteria for DISH. However, he also exhibited signs of bilateral sacroiliitis highly suggestive of axial SpA for which he initiated biological therapy. LEARNING POINTS: Although the most used criteria for diffuse idiopathic skeletal hyperostosis (DISH) were designed to exclude radiographic signs of spondyloarthritis (SpA), both conditions can be present simultaneously.There are only few case reports in the literature that demonstrate the association of the two diseases.Overlap and misperception of SpA and DISH could result in undertreatment of individual patients and have a negative impact on prognosis.

10.
Arq Bras Cir Dig ; 36: e1780, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38088726

RESUMO

BACKGROUND: Achalasia is an esophageal motility disorder, and myotomy is one of the most used treatment techniques. However, symptom persistence or recurrence occurs in 9 to 20% of cases. AIMS: This study aims to provide a practical approach for managing the recurrence or persistence of achalasia symptoms after myotomy. METHODS: A critical review was performed to gather evidence for a rational approach for managing the recurrence or persistence of achalasia symptoms after myotomy. RESULTS: To properly manage an achalasia patient with significant symptoms after myotomy, such as dysphagia, regurgitation, thoracic pain, and weight loss, it is necessary to classify symptoms, stratify severity, perform appropriate tests, and define a treatment strategy. A systematic differential diagnosis workup is essential to cover the main etiologies of symptoms recurrence or persistence after myotomy. Upper digestive endoscopy and dynamic digital radiography are the main tests that can be applied for investigation. The treatment options include endoscopic dilation, peroral endoscopic myotomy, redo surgery, and esophagectomy, and the decision should be based on the patient's individual characteristics. CONCLUSIONS: A good clinical evaluation and the use of proper tests jointly with a rational assessment, are essential for the management of symptoms recurrence or persistence after achalasia myotomy.


Assuntos
Acalasia Esofágica , Miotomia , Humanos , Transtornos de Deglutição/etiologia , Endoscopia , Acalasia Esofágica/diagnóstico , Acalasia Esofágica/cirurgia , Esfíncter Esofágico Inferior/cirurgia , Esofagectomia , Miotomia/efeitos adversos , Miotomia/métodos , Cirurgia Endoscópica por Orifício Natural , Resultado do Tratamento
11.
Ecol Evol ; 12(1): e8518, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-35127032

RESUMO

Climate change and other anthropogenic activities have the potential to alter the dynamics of resource exchange in the mutualistic symbiosis between plants and mycorrhizal fungi, potentially altering its stability. Arbuscular mycorrhizal (AM) fungi, which interact with most plant species, are less cold-tolerant than other groups of fungi; warming might therefore lead to increased fungal-mediated nutrient transfers to plants, which could strengthen the mutualism. By stimulating photosynthesis, rising CO2 could reduce the carbon cost of supporting AM fungi, which may also strengthen the mutualism. Furthermore, rising temperature and CO2 could have stronger effects on the mutualism in wild plants than in domesticated plants because the process of domestication can reduce the dependence of plants on mycorrhizal fungi. We conducted a multi-level random effects meta-analysis of experiments that quantified the strength of the mutualism as plant growth response to AM fungal inoculation (i.e., mycorrhizal growth response) under contrasting temperature and CO2 treatments that spanned the Last Glacial Maximum (LGM) to those expected with future climate change. We tested predictions using a three-level mixed effects meta-regression model with temperature or CO2, domestication status and their interaction as moderators. Increases from subambient to ambient temperature stimulated mycorrhizal growth response only for wild, but not for domesticated plant species. An increase from ambient to superambient temperature stimulated mycorrhizal growth response in both wild and domesticated plants, but the overall temperature effect was not statistically significant. By contrast, increased CO2 concentration, either from subambient to ambient or ambient to super ambient levels, did not affect mycorrhizal growth response in wild or domesticated plants. These results suggest the mutualism between wild plants and AM fungi was likely strengthened as temperature rose from the past to the present and that forecasted warming due to climate change may have modest positive effects on the mutualistic responses of plants to AM fungi. Mutualistic benefits obtained by plants from AM fungi may not have been altered by atmospheric CO2 increases from the past to the present, nor are they likely to be affected by a forecasted CO2 increase. This meta-analysis also identified gaps in the literature. In particular, (i) a large majority of studies that examined temperature effects on the mutualism focus on domesticated species (>80% of all trials) and (ii) very few studies examine how rising temperature and CO2, or other anthropogenic effects, interact to influence the mutualism. Therefore, to predict the stability of the mycorrhizal mutualism in the Anthropocene, future work should prioritize wild plant species as study subjects and focus on identifying how climate change factors and other human activities interact to affect plant responses to AM fungi.

12.
Rev Bras Enferm ; 75Suppl 2(Suppl 2): e20210960, 2022.
Artigo em Inglês, Português | MEDLINE | ID: mdl-36259881

RESUMO

OBJECTIVES: to analyze nursing vulnerability through photos released by the media amidst the COVID-19 pandemic. METHODS: a documentary study, with a qualitative approach. The object of analysis were photographic images selected between January 2020 and March 2021, published by the main news portals in countries such as Brazil, the United States, France, Spain, England and Germany. Thematic categorical analysis was the method of analysis used. RESULTS: we found 74 photographs that portrayed nursing professionals in different work situations. It was possible to identify stigma and social devaluation about this class's representation and professional attribution. Moreover, we found an underrepresentation of black professionals in Brazilian portals and the man as the prominent figure in the spaces of claims. FINAL CONSIDERATIONS: the photographs represented an important tool for the social analysis of nursing vulnerability, favoring the unveiling of situations that may go unnoticed by nursing and society.


Assuntos
COVID-19 , Humanos , Estados Unidos , Pandemias , Espanha , Brasil/epidemiologia , Percepção Social
13.
JMIR Res Protoc ; 10(7): e29921, 2021 Jul 26.
Artigo em Inglês | MEDLINE | ID: mdl-34134971

RESUMO

BACKGROUND: Ensuring women's rights during childbirth care based on humanized and bioethical principles results in better quality of care and patient safety and provides positive childbirth experiences. OBJECTIVE: We aim to explore the available evidence on the application of bioethical principles in the general context of childbirth care. METHODS: Our scoping review will follow the Joanna Briggs Institute Reviewer's Manual. Published and unpublished bibliographic materials will be considered based on the following inclusion criteria: reports of the application of bioethical principles (concept) in assistance to the predelivery, childbirth, and postpartum periods (population) in the hospital context (context). We will search for relevant studies in PubMed and the Virtual Health Library, including MEDLINE, LILACS, BDENF, SCiELO, Web of Science, and Google Scholar. Two reviewers will perform the screening of titles and abstracts, read the full texts, and extract data from the selected articles. The data will then be organized and expressed into categories based on their content. RESULTS: The analyzed data will be presented through flowcharts, tables, and descriptive narratives. A paper summarizing the findings from this review will be published in a peer-reviewed journal. In addition, a synthesis of the key findings will be disseminated to health services linked to university hospitals in Brazil. They will also be shared with the academic community and policy makers involved in the Childbirth Assistance Network, which will potentially adopt our recommendations in their decision-making process regarding childbirth care practice in Brazil. CONCLUSIONS: The findings from this review will inform, through the translation of knowledge, childbirth support groups, feminist movements, movements in favor of humanization of childbirth, and other childbirth support networks in the country. TRIAL REGISTRATION: Open Science Framework; https://osf.io/kczyr/.

14.
Physiol Meas ; 42(10)2021 10 29.
Artigo em Inglês | MEDLINE | ID: mdl-34134102

RESUMO

Objective.The purpose of this article is to introduce readers to the concept and structure of the CAAos (CerebralAutoregulationAssessmentOpenSource) platform, and provide evidence of its functionality.Approach.The CAAos platform is a new open-source software research tool, developed in Python 3 language, that combines existing and novel methods for interactive visual inspection, batch processing and analysis of multichannel records. The platform is scalable, allowing for the customization and inclusion of new tools.Main results.Currently, the CAAos platform is composed of two main modules, preprocessing (containing artefact removal, filtering and signal beat to beat extraction tools) and cerebral autoregulation (CA) analysis modules. Two methods for assessing CA have been implemented into the CAAos platform: transfer function analysis (TFA) and the autoregulation index (ARI). In order to provide validation of the TFA and ARI estimates derived from the CAAos platform, the results were compared with those derived from two other algorithms. Validation was performed using data from 28 participants, corresponding to 13 acute ischemic stroke patients and 13 age- and sex-matched control subjects. Agreement between estimates was assessed by intraclass correlation coefficient and Bland-Altman analysis. No significant statistical difference between the algorithms was found. Moreover, there was an excellent correspondence between the curves of all parameters analysed, with the intraclass correlation coefficient ranging from 0.98 (95%CI 0.976-0.999) to 1.00 (95%CI 1 -1). The mean differences revealed a very small magnitude bias indicating an excellent agreement between the estimates.Significance.As open-source software, the source code for the software is freely available for noncommercial use, reducing barriers to performing CA analysis, allowing inspection of the inner-workings of the algorithms, and facilitating networked activities with common standards. The CAAos platform is a tailored software solution for the scientific community in the cerebral hemodynamic field and contributes to the increasing use and reproducibility of CA assessment.


Assuntos
Isquemia Encefálica , Acidente Vascular Cerebral , Circulação Cerebrovascular , Hemodinâmica , Humanos , Reprodutibilidade dos Testes
15.
Funct Plant Biol ; 47(2): 134-144, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31902392

RESUMO

Low atmospheric CO2 conditions prevailed for most of the recent evolutionary history of plants. Such concentrations reduce plant growth compared with modern levels, but low-CO2 effects on plant performance may also be affected by nitrogen availability, since low leaf nitrogen decreases photosynthesis, and CO2 concentrations influence nitrogen assimilation. To investigate the influence of N availability on plant performance at low CO2, we grew Elymus canadensis at ambient (~400 µmol mol-1) and subambient (~180 µmol mol-1) CO2 levels, under four N-treatments: nitrate only; ammonium only; a full and a half mix of nitrate and ammonium. Growth at low CO2 decreased biomass in the full and nitrate treatments, but not in ammonium and half plants. Low CO2 effects on photosynthetic and maximum electron transport rates were influenced by fertilisation, with photosynthesis being most strongly impacted by low CO2 in full plants. Low CO2 reduced stomatal index in half plants, suggesting that the use of this indicator in paleo-inferences can be influenced by N availability. Under low CO2 concentrations, nitrate plants discriminated more against 15N whereas half plants discriminated less against 15N compared with the full treatment, suggesting that N availability should be considered when using N isotopes as paleo-indicators.


Assuntos
Dióxido de Carbono , Nitrogênio , Nitratos , Fotossíntese , Plantas
16.
Rev Col Bras Cir ; 47: e20202637, 2020.
Artigo em Inglês, Português | MEDLINE | ID: mdl-33263652

RESUMO

OBJECTIVE: to evaluate esophageal dysmotility (ED) and the extent of Barrett's esophagus (BE) before and after laparoscopic Nissen fundoplication (LNF) in patients previously diagnosed with BE and ED. METHODS: twenty-two patients with BE diagnosed by upper gastrointestinal (GI) endoscopy with biopsies and ED diagnosed by conventional esophageal manometry (CEM) were submitted to a LNF, and followed up with clinical evaluations, upper GI endoscopy with biopsies and CEM, for a minimum of 12 months after the surgical procedure. RESULTS: : sixteen patients were male (72.7%) and six were females (27.3%). The mean age was 55.14 (± 15.52) years old. and the mean postoperative follow-up was 26.2 months. The upper GI endoscopy showed that the mean length of BE was 4.09 cm preoperatively and 3.91cm postoperatively (p=0.042). The evaluation of esophageal dysmotility through conventional manometry showed that: the preoperative median of the lower esophageal sphincter resting pressure (LESRP) was 9.15 mmHg and 13.2 mmHg postoperatively (p=0.006). The preoperative median of the esophageal contraction amplitude was 47.85 mmHg, and 57.50 mmHg postoperatively (p=0.408). Preoperative evaluation of esophageal peristalsis showed that 13.6% of the sample presented diffuse esophageal spasm and 9.1% ineffective esophageal motility. In the postoperative, 4.5% of patients had diffuse esophageal spasm, 13.6% of aperistalsis and 22.7% of ineffective motor activity (p=0.133). CONCLUSION: LNF decreased the BE extension, increased the LES resting pressure, and increased the amplitude of the distal esophageal contraction; however, it was unable to improve ED.


Assuntos
Esôfago de Barrett/cirurgia , Transtornos da Motilidade Esofágica/cirurgia , Fundoplicatura/efeitos adversos , Laparoscopia , Adulto , Idoso , Espasmo Esofágico Difuso , Feminino , Fundoplicatura/métodos , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
17.
Clin Case Rep ; 7(7): 1374-1377, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31360491

RESUMO

This study describes a patient with symptomatic Killian-Jamieson, a rare entity, successfully treated by cervical approach with diverticulum resection and esophagomyotomy.

18.
Int J Surg Case Rep ; 65: 164-167, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31715446

RESUMO

INTRODUCTION: Heterotopic pancreas is a rare congenital anomaly. We report a case of esophageal heterotopic pancreas complicated by recurrent mediastinal abscess and treated by minimally invasive resection. PRESENTATION OF CASE: A 31-year-old woman was admitted with a history of recurrent chest pain, dysphagia, and heartburn. CT scan revealed focal confined collection in the lower mediastinum surrounding esophagus. Endoscopic ultrasound revealed a subepithelial lesion. The patient was treated by minimally invasive esophagectomy and made an uneventful postoperative recovery. DISCUSSION: The management of subepithelial lesions would depend on their size, ability to exclude other etiologies and their associated symptoms. The patient, in this case, was obviously symptomatic and accurate differentiation from malignant etiologies could not be accurately made. CONCLUSION: Although pancreatic heterotopia is rare, it should be remembered in the differential diagnosis of various gastrointestinal lesions.

19.
Bone ; 110: 107-114, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-29414596

RESUMO

Enzymatic collagen cross-linking has been shown to play an important role in the macroscopic elastic and plastic deformation of bone across ages. However, its direct contribution to collagen fibril deformation is unknown. The aim of this study is to determine how covalent intermolecular connections from enzymatic collagen cross-links contribute to collagen fibril elastic and plastic deformation of adults and children's bone matrix. We used ex vivo data previously obtained from biochemical analysis of children and adults bone samples (n = 14; n = 8, respectively) to create 22 sample-specific computational models of cross-linked collagen fibrils. By simulating a tensile test for each fibril, we computed the modulus of elasticity (E), ultimate tensile and yield stress (σu and σy), and elastic, plastic and total work (We, Wp and Wtot) for each collagen fibril. We present a novel difference between children and adult bone in the deformation of the collagen phase and suggest a link between collagen fibril scale and macroscale for elastic behavior in children bone under the influence of immature enzymatic cross-links. We show a parametric linear correlation between We and immature enzymatic collagen cross-links at the collagen fibril scale in the children population that is similar to the one we found at the macroscale in our previous study. Finally, we suggest the key role of covalent intermolecular connections to stiffness parameters (e.g. elastic modulus and We) in children's collagen fibril and to toughness parameters in adult's collagen fibril, respectively.


Assuntos
Doenças Ósseas/metabolismo , Osso e Ossos/metabolismo , Colágeno/química , Elasticidade , Adolescente , Idoso , Matriz Óssea/metabolismo , Osso e Ossos/patologia , Criança , Simulação por Computador , Módulo de Elasticidade , Matriz Extracelular/metabolismo , Humanos , Pessoa de Meia-Idade , Estresse Mecânico
20.
J. inborn errors metab. screen ; 11: e20230008, 2023. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1514439

RESUMO

Abstract Aromatic L-Amino acid decarboxylase (AADC) deficiency is a rare neurometabolic disorder due to a homozygous or compound heterozygous pathogenic variant of the DDC gene, resulting in low synthesis of the biogenic amines dopamine, serotonin, epinephrine, and norepinephrine. Most patients had severe expression of the disease with global developmental delay, early hypotonia, movement disorders such as oculogyric crises, tremor, and dystonia. Oromandibular dystonia (OMD) is rarely recognized in patients with AADC deficiency. The aim of this study was to describe OMD in detail in 4 patients with AADC deficiency. OMD occurred in isolated form or in association with oculogyric crises, increasing the difficulty in care patients during the crises. The main form of OMD was tongue dystonia associated with mouth opening dystonia. AADC deficiency must be included in the list of genetic causes of OMD.

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