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1.
Nutr Metab Cardiovasc Dis ; 34(5): 1142-1145, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38220504

RESUMO

BACKGROUND AND AIMS: Bariatric surgery is effective for treating type 2 diabetes (T2D) in patients with obesity, although a significant proportion of these patients do not achieve diabetes remission after the surgery even after significant weight loss and metabolic improvement. C-peptide is a valuable marker of beta cell function and insulin secretion, but renal function must be considered when interpreting measurements in patients with T2D. The study aims to investigate the association of serum levels of C-peptide adjusted for creatinine with diabetes remission and glycemic target achievement after bariatric surgery in patients with obesity and T2D. METHODS AND RESULTS: Prospective data from a cohort of 84 patients with obesity and T2D submitted to Roux-en-Y gastric bypass (RYGB) were collected at baseline and at least a 6-month follow up. A multivariate binomial regression model showed that Ln(C-peptide/creatinine) and age were significantly associated with 6-month T2D remission. The area under the curve for the receiver operating characteristic analysis (AUROC) to predict remission was 0.87, and more accurate than the AUROC based on C-peptide levels alone (0.75). The same model was also able to predict achieving an HbA1c target of 7 % (53 mmol/mol) (AUROC 0.96). CONCLUSION: In conclusion, Ln(C-peptide/creatinine) ratio could be a useful tool in predicting T2D remission and target achievement after RYGB surgery, providing a more accurate reflection of beta cell function in bariatric patients.


Assuntos
Cirurgia Bariátrica , Diabetes Mellitus Tipo 2 , Derivação Gástrica , Humanos , Peptídeo C/metabolismo , Creatinina , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/cirurgia , Diabetes Mellitus Tipo 2/complicações , Obesidade/diagnóstico , Obesidade/cirurgia , Obesidade/complicações , Projetos Piloto , Estudos Prospectivos , Indução de Remissão
2.
J Appl Gerontol ; : 7334648231218095, 2023 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-38038169

RESUMO

This study investigated the relationship between physical activity, inactivity, physical function, and sleep in older adults with a frailty phenotype. A total of 184 pre-frail/frail older adults were included. Physical activity, inactive behavior, and sleep parameters were assessed using a wrist-worn accelerometer. Participants were categorized into four groups based on their levels of inactivity and physical activity. The results showed that individuals with lower levels of inactivity had better lower body mean velocity and sleep regularity than those with higher levels of inactivity. Physically active older adults exhibited faster gait speed and performed better in lower body strength tests than physically inactive participants. Further analysis revealed that specific combinations of inactivity and physical activity were associated with varying levels of physical function. The findings highlight the importance of physical activity and the negative impact of inactivity on physical function and sleep in older adults with a frailty phenotype.

3.
Front Aging Neurosci ; 15: 1232460, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37790284

RESUMO

Introduction: This study aims to investigate the health factors associated with cognitive frailty in frail and pre-frail older adults living in the community. Methods: A total of 233 older adults meeting Fried's criteria for pre-frailty or frailty were included. Cognitive status was evaluated using the Short Portable Mental Status Questionnaire. Health factors encompassed nutritional status (evaluated using the Mini Nutritional Assessment tool, body mass index, and waist, arm, and leg circumferences), physical function (assessed with the Short Physical Performance Battery), quality of life (measured with the total index of the EuroQoL 5-Dimension 5-Level questionnaire - EQoL-Index -, and the Visual-Analogue Scale - QoL-VAS - for today's health state), as well as sleep, physical activity, and inactivity estimated through wrist-worn accelerometers. Multivariable logistic regression analyses were conducted to identify potential predictors of cognitive frailty, considering age as a confounding factor. Results: Cognitive frail participants exhibited advanced age, heightened self-reported exhaustion, diminished overall physical performance, reduced leg perimeter, decreased engagement in moderate-to-vigorous physical activity, and higher levels of inactivity (all p<0.05). However, after adjusting for age, only QoL-VAS emerged as a cognitive frailty risk factor (Odds ratio: 1.024), while the EQoL-Index, calf perimeter, and levels of moderate-to-vigorous physical activity were identified as protective factors (Odds ratios: 0.025, 0.929, and 0.973, respectively). Discussion: This study highlights the complex relationship between non-modifiable factors such as age, and modifiable factors including quality of life, nutritional status, and physical activity in the development of cognitive frailty among older adults with a frailty phenotype living in the community.

4.
Gut Microbes ; 15(1): 2229948, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37424323

RESUMO

A high-fat (HF) diet reduces resistance to the foodborne pathogen Listeria monocytogenes. We demonstrate that short-term gavage with A. muciniphila increases resistance to oral and systemic L. monocytogenes infection in mice fed a HF diet. A. muciniphila reduced inflammation in the gut and liver of mice fed a high-fat diet prior to infection and reduced inflammatory cell infiltration in the ileum to levels similar to mice fed a low-fat (LF) diet. Akkermansia administration had minimal impacts upon the microbiota and microbial metabolites and did not affect individual taxa or impact the Bacteroidetes to Firmicutes ratio. In summary, A. muciniphila increased resistance to L. monocytogenes infection in mice fed a HF diet by moderating immune/physiological effects through specific interaction between A. muciniphila and the host gut.


Assuntos
Microbioma Gastrointestinal , Listeria monocytogenes , Listeriose , Animais , Camundongos , Dieta Hiperlipídica/efeitos adversos , Verrucomicrobia/fisiologia , Camundongos Endogâmicos C57BL
5.
Artigo em Inglês | MEDLINE | ID: mdl-36981620

RESUMO

Childhood obesity has reached epidemic levels in developed countries and is becoming a major cause for concern in the developing world. The causes of childhood obesity are complex and multifactorial, involving the interaction between individual genetics and environmental and developmental factors. Among the environmental factors, there is a growing interest in understanding the possible relationship between the so-called environmental obesogens and the development of obesity in children. Exposure to these obesogens such as phthalates, bisphenol A, or parabens, has been identified as a promoter of obesity through different mechanisms such as the alteration of adipocyte development from mesenchymal progenitors, the interference with hormone receptors, and induced inflammation. However, less attention has been paid to the inheritance of epigenetic modifications due to maternal exposure to these compounds during pregnancy. Thus, the aim of this review is to summarize the current knowledge of epigenetic modifications due to maternal exposure to those obesogens during pregnancy as well as their potential implication on long-term obesity development in the offspring and transgenerational inheritance of epiphenotypes.


Assuntos
Disruptores Endócrinos , Obesidade Pediátrica , Efeitos Tardios da Exposição Pré-Natal , Criança , Gravidez , Feminino , Humanos , Obesidade Pediátrica/induzido quimicamente , Obesidade Pediátrica/epidemiologia , Obesidade Pediátrica/genética , Efeitos Tardios da Exposição Pré-Natal/genética , Disruptores Endócrinos/toxicidade , Adipócitos , Epigênese Genética , Exposição Ambiental
6.
Surg Obes Relat Dis ; 19(7): 727-734, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-36842931

RESUMO

BACKGROUND: Obesity has reached epidemic dimensions in recent decades. Bariatric surgery (BS) is one of the most effective interventions for weight loss and metabolic improvement in patients with obesity. Short-chain fatty acids (SCFA) are gut microbiota-derived metabolites with a key role in body weight control and insulin sensitivity. Although BS is known to induce significant changes in the gut microbiota composition, its impact on the circulating levels of certain metabolites produced by the gut microbiota such as SCFA remains poorly understood. OBJECTIVE: To determine the impact of BS on the circulating SCFA levels in patients with severe obesity. SETTING: University hospital. METHODS: An observational, prospective study was performed on 51 patients undergoing Roux-en-Y gastric bypass. Plasma samples were collected at baseline (1 day before surgery) and at 6 and 12 months after BS. Plasma SCFA levels were determined by liquid chromatography-mass spectrometry. RESULTS: The results revealed significant changes in the circulating levels of SCFA after BS. A marked increase in propionate, butyrate, isobutyrate, and isovalerate levels and a decrease in acetate, valerate, hexanoate, and heptanoate levels were observed 12 months after BS. Furthermore, the changes in the levels of propionate, butyrate, and isobutyrate negatively correlated with changes in body mass index, while those of isobutyrate correlated negatively with changes in the homeostatic model assessment for insulin resistance index. CONCLUSION: These results suggest that propionate, butyrate, and isobutyrate levels could be related to weight loss and improved insulin sensitivity in patients with severe obesity after BS.


Assuntos
Cirurgia Bariátrica , Resistência à Insulina , Obesidade Mórbida , Humanos , Obesidade Mórbida/cirurgia , Propionatos , Estudos Prospectivos , Isobutiratos , Obesidade/cirurgia , Cirurgia Bariátrica/métodos , Ácidos Graxos Voláteis , Redução de Peso , Butiratos
7.
Artigo em Inglês | MEDLINE | ID: mdl-36673654

RESUMO

This study aims to analyse sex-specific associations of physical activity and sedentary behaviour with oxidative stress and inflammatory markers in a young-adult population. Sixty participants (21 women, 22.63 ± 4.62 years old) wore a hip accelerometer for 7 consecutive days to estimate their physical activity and sedentarism. Oxidative stress (catalase, superoxide dismutase, glutathione peroxidase, glutathione, malondialdehyde, and advanced oxidation protein products) and inflammatory (tumour necrosis factor-alpha and interleukin-6) markers were measured. Student t-tests and single linear regressions were applied. The women presented higher catalase activity and glutathione concentrations, and lower levels of advanced protein-oxidation products, tumour necrosis factor-alpha, and interleukin-6 than the men (p < 0.05). In the men, longer sedentary time was associated with lower catalase activity (ß = −0.315, p = 0.04), and longer sedentary breaks and higher physical-activity expenditures were associated with malondialdehyde (ß = −0.308, p = 0.04). Vigorous physical activity was related to inflammatory markers in the women (tumour necrosis factor-alpha, ß = 0.437, p = 0.02) and men (interleukin−6, ß = 0.528, p < 0.01). In conclusion, the women presented a better redox and inflammatory status than the men; however, oxidative-stress markers were associated with physical activity and sedentary behaviours only in the men. In light of this, women could have better protection against the deleterious effect of sedentarism but a worse adaptation to daily physical activity.


Assuntos
Comportamento Sedentário , Fator de Necrose Tumoral alfa , Masculino , Humanos , Feminino , Adulto Jovem , Adolescente , Adulto , Catalase , Interleucina-6 , Exercício Físico , Estresse Oxidativo , Antioxidantes , Malondialdeído , Glutationa , Acelerometria
8.
Arch Sex Behav ; 52(2): 833-849, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36478134

RESUMO

Women who have sex with women (WSW) have lower rates of engagement in health care and preventive screenings than women who have sex exclusively with men. Existing literature provides limited insight into how intersecting and overlapping identities, such as race, ethnicity, sexual orientation, gender identity, and identities related to gender expression, may shape individuals' experiences within health care. We conducted qualitative interviews in New York City with 30 people who identified as women, reported sex with people who identify as women, were age 18-65, and were diverse in race, ethnicity, and sexual orientation and gender identity. The semi-structured questionnaire asked participants about positive and negative healthcare experiences to elicit what could encourage or prevent seeking care, with a focus on provider-related factors. Factors that led to positive healthcare experiences included having a provider who was knowledgeable about LGBTQ experience and health and who affirmed their sexuality, gender identity, and other intersecting identities. Factors that contributed to negative healthcare experiences included poor interactions with providers, and providers' perceived heteronormativity and lack of awareness of WSW healthcare needs. WSW of different races, ethnicities, sexual orientations, and gender identities seek validating healthcare experiences that acknowledge and affirm their identities. We present a visual summary of the main thematic factors that contributed to positive and negative WSW healthcare experiences. Increasing access to care requires training providers on how to engage WSW patients, including WSW of diverse race/ethnicity and gender identity and expression.


Assuntos
Identidade de Gênero , Minorias Sexuais e de Gênero , Humanos , Feminino , Masculino , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Cidade de Nova Iorque , Comportamento Sexual , Atenção à Saúde
9.
Food Funct ; 14(1): 112-121, 2023 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-36484295

RESUMO

Cruciferous vegetables have been reported to be a great source of anti-inflammatory compounds. Specifically, sprouts from the Brassicaceae family stand out for their high content of glucosinolates (and their bioactive derivatives, isothiocyanates), phenolic acids, and anthocyanins. Despite the evident anti-inflammatory activity of certain Brassica phytochemicals such as sulforaphane or phenolic acids, the effect of digested Brassica vegetables on inflammation remains understudied. In this work, we aimed to evaluate the anti-inflammatory potential of the bioaccessible forms of cruciferous bioactives (from red cabbage sprouts (RCS) and red radish sprouts (RRS)) obtained upon in vitro gastrointestinal digestion in the HL-60 macrophage-like differentiated human cell line. The study was performed under basal conditions or stimulated with a low dose of LPS for 24 hours as a validated in vitro model of chronic inflammation. The cell viability was determined by MTT assay. The gene expression and production of pro-inflammatory cytokines TNF-α, IL-6 and IL-1ß were determined by RT-qPCR and ELISA respectively. Our results revealed no cytotoxicity with any of the treatments in LPS-stimulated macrophage-like HL60 cells. Regarding cytokine production, digestates significantly decreased the production of the three pro-inflammatory cytokines at concentrations of 50 and 100 µg mL-1 except for IL-1ß treated with RCS digestates. Furthermore, the RT-qPCR analysis showed a decrease in the relative expression of pro-inflammatory cytokines in LPS-stimulated cells treated with RRS digestates at 100 µg mL-1 but not with red cabbage digestates. In conclusion, RRS bioaccessible compounds in the extracts could be used as dietary coadjuvants given their potential anti-inflammatory effect on this in vitro model of chronic inflammation.


Assuntos
Brassica , Humanos , Brassica/química , Células HL-60 , Lipopolissacarídeos/farmacologia , Antocianinas , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/química , Macrófagos/metabolismo , Inflamação/tratamento farmacológico , Citocinas/genética , Citocinas/metabolismo
10.
Gut Microbes ; 14(1): 2149023, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36420990

RESUMO

The mechanisms by which early microbial colonizers of the neonate influence gut development are poorly understood. Bacterial bile salt hydrolase (BSH) acts as a putative colonization factor that influences bile acid signatures and microbe-host signaling pathways and we considered whether this activity can influence infant gut development. In silico analysis of the human neonatal gut metagenome confirmed that BSH enzyme sequences are present as early as one day postpartum. Gastrointestinal delivery of cloned BSH to immature gnotobiotic mice accelerated shortening of the colon and regularized gene expression profiles, with monocolonised mice more closely resembling conventionally raised animals. In situ expression of BSH decreased markers of cell proliferation (Ki67, Hes2 and Ascl2) and strongly increased expression of ALPI, a marker of cell differentiation and barrier function. These data suggest an evolutionary paradigm whereby microbial BSH activity potentially influences bacterial colonization and in-turn benefits host gastrointestinal maturation.


Assuntos
Microbioma Gastrointestinal , Transcriptoma , Feminino , Humanos , Camundongos , Animais , Amidoidrolases/genética , Amidoidrolases/metabolismo , Trato Gastrointestinal/microbiologia , Bactérias/genética , Fatores de Transcrição Hélice-Alça-Hélice Básicos/metabolismo
11.
Int J Mol Sci ; 23(15)2022 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-35955491

RESUMO

Crohn's disease (CD) is a complex, disabling, idiopathic, progressive, and destructive disorder with an unknown etiology. The pathogenesis of CD is multifactorial and involves the interplay between host genetics, and environmental factors, resulting in an aberrant immune response leading to intestinal inflammation. Due to the high morbidity and long-term management of CD, the development of non-pharmacological approaches to mitigate the severity of CD has recently attracted great attention. The gut microbiota has been recognized as an important player in the development of CD, and general alterations in the gut microbiome have been established in these patients. Thus, the gut microbiome has emerged as a pre-eminent target for potential new treatments in CD. Epidemiological and interventional studies have demonstrated that diet could impact the gut microbiome in terms of composition and functionality. However, how specific dietary strategies could modulate the gut microbiota composition and how this would impact host-microbe interactions in CD are still unclear. In this review, we discuss the most recent knowledge on host-microbe interactions and their involvement in CD pathogenesis and severity, and we highlight the most up-to-date information on gut microbiota modulation through nutritional strategies, focusing on the role of the microbiota in gut inflammation and immunity.


Assuntos
Doença de Crohn , Microbioma Gastrointestinal , Microbiota , Doença de Crohn/terapia , Dieta , Microbioma Gastrointestinal/fisiologia , Interações entre Hospedeiro e Microrganismos , Humanos , Inflamação/terapia
12.
Spinal Cord Ser Cases ; 8(1): 27, 2022 03 03.
Artigo em Inglês | MEDLINE | ID: mdl-35241659

RESUMO

STUDY DESIGN: Case-control study. OBJECTIVES: To identify factors associated with neuropathic pain (NP) in patients with spinal cord injury of traumatic origin (TSCI). SETTING: University Hospital of Valle, Cali, Colombia. METHODS: Study participants were individuals with diagnosis of TSCI who visited a trauma referral center from January 1st, 2016, to December 31st, 2016. Information was retrospectively extracted from the Hospital's Spinal Cord Injury registry and patients' medical records. Cases were defined as patients with NP and controls were those without NP. The exposure of interest was intentional injuries. Individuals were matched by age and stratified into 11 groups of ±3 years each. RESULTS: We found 164 participants with an average age of 34 ± 13 years, of whom 95.1% were male, and 53.6% had NP. Neurogenic bladder and bowel occurred in 94.3% of NP patients. Cause of injury was not associated with NP. Older injuries were protective for NP (>10 years since injury OR = 0.10, 95% CI = 0.03-0.37, p < 0.0001) and neurogenic bladder and bowel were found as risk factors (OR = 5.89, 95% CI = 1.84-18.88; p = 0.003). CONCLUSIONS: Our study uniquely shows time since injury as a protective factor for NP and neurogenic bladder and bowel as a risk factor, while violence was not found associated. This could help guide the scope of future research about NP secondary to SCI.


Assuntos
Neuralgia , Traumatismos da Medula Espinal , Adulto , Estudos de Casos e Controles , Colômbia/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Neuralgia/epidemiologia , Neuralgia/etiologia , Estudos Retrospectivos , Traumatismos da Medula Espinal/complicações , Traumatismos da Medula Espinal/epidemiologia , Adulto Jovem
13.
Dolor ; 31(74): 26-34, sept. 2021. tab
Artigo em Espanhol | LILACS | ID: biblio-1362804

RESUMO

El paciente oncológico de cuidados paliativos puede presentar una variedad importante de condiciones clínicas que producen sufrimiento y disminución en la calidad de vida; esto se presenta como un reto para el clínico en la identificación y correcto abordaje de los pacientes. El dolor se ha considerado por años como el síntoma cardinal a tratar en el paciente oncológico, donde se deben considerar sus condicionantes fisiopatológicos, la farmacología de las intervenciones, los posibles efectos secundarios y los condicionantes familiares, sociales y personales del dolor, pero a pesar de su relevancia, no es el único síntoma, estando acompañado de un abanico de patologías, como las afectaciones gastrointestinales, pulmonares, vasculares, hematológicas y neurológicas, que favorecen la pérdida de capacidad del paciente y, en muchas ocasiones, la muerte. Se realizó una revisión actualizada en bases de datos como EMBASE, PUBMED, SCIELO, además de la revisión de guías de asociaciones internacionales con el objetivo de acercar a todos los médicos, sin distinguir su especialidad o área de trabajo, al abordaje y manejo del paciente oncológico en cuidado paliativo, favoreciendo la sensibilización con estas patologías y la importancia en el curso de vida de los pacientes.


The palliative care cancer patient can present a significant variety of clinical conditions that produce suffering and a decrease in the quality of life. This is a challenge for the clinician in the identification and correct approach of patients. Pain has been considered for years as the cardinal symptom to be treated in cancer patients, where its pathophysiological factors, the pharmacology of the interventions, possible side effects and the family, social and personal conditions of pain must be considered, but despite its relevance is not the onset of symptoms and is accompanied by a range of pathologies such as gastrointestinal, pulmonary, vascular, hematological and neurological affectations that favor the loss of capacity of the patient and in many cases death. An updated review was carried out in databases such as EMBASE, PUBMED, SCIELO in addition to the revision of guides from international associations with the aim of bringing all doctors without distinguishing their specialty or area of work to the approach and management of cancer patients in palliative care favoring awareness of these pathologies and their importance in the life course of patients.


Assuntos
Humanos , Cuidados Paliativos/métodos , Dor do Câncer/tratamento farmacológico , Analgésicos Opioides/uso terapêutico , Síndrome da Veia Cava Superior/diagnóstico , Síndrome de Lise Tumoral/diagnóstico , Emergências , Tromboembolia Venosa/diagnóstico , Obstrução Intestinal/diagnóstico , Morfina/uso terapêutico , Neoplasias/complicações
14.
Autophagy ; 17(12): 4119-4140, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34024231

RESUMO

Current disease-modifying therapies for Huntington disease (HD) focus on lowering mutant HTT (huntingtin; mHTT) levels, and the immunosuppressant drug rapamycin is an intriguing therapeutic for aging and neurological disorders. Rapamycin interacts with FKBP1A/FKBP12 and FKBP5/FKBP51, inhibiting the MTORC1 complex and increasing cellular clearance mechanisms. Whether the levels of FKBP (FK506 binding protein) family members are altered in HD models and if these proteins are potential therapeutic targets for HD have not been investigated. Here, we found levels of FKBP5 are significantly reduced in HD R6/2 and zQ175 mouse models and human HD isogenic neural stem cells and medium spiny neurons derived from induced pluripotent stem cells. Moreover, FKBP5 interacts and colocalizes with HTT in the striatum and cortex of zQ175 mice and controls. Importantly, when we decreased FKBP5 levels or activity by genetic or pharmacological approaches, we observed reduced levels of mHTT in our isogenic human HD stem cell model. Decreasing FKBP5 levels by siRNA or pharmacological inhibition increased LC3-II levels and macroautophagic/autophagic flux, suggesting autophagic cellular clearance mechanisms are responsible for mHTT lowering. Unlike rapamycin, the effect of pharmacological inhibition with SAFit2, an inhibitor of FKBP5, is MTOR independent. Further, in vivo treatment for 2 weeks with SAFit2, results in reduced HTT levels in both HD R6/2 and zQ175 mouse models. Our studies establish FKBP5 as a protein involved in the pathogenesis of HD and identify FKBP5 as a potential therapeutic target for HD.Abbreviations : ACTB/ß-actin: actin beta; AD: Alzheimer disease; BafA1: bafilomycin A1; BCA: bicinchoninic acid; BBB: blood brain barrier; BSA: bovine serum albumin; CoIP: co-immunoprecipitation; DMSO: dimethyl sulfoxide; DTT: dithiothreitol; FKBPs: FK506 binding proteins; HD: Huntington disease; HTT: huntingtin; iPSC: induced pluripotent stem cells; MAP1LC3/LC3:microtubule associated protein 1 light chain 3; MAPT/tau: microtubule associated protein tau; MES: 2-ethanesulfonic acid; MOPS: 3-(N-morphorlino)propanesulfonic acid); MSN: medium spiny neurons; mHTT: mutant huntingtin; MTOR: mechanistic target of rapamycin kinase; NSC: neural stem cells; ON: overnight; PD: Parkinson disease; PPIase: peptidyl-prolyl cis/trans-isomerases; polyQ: polyglutamine; PPP1R1B/DARPP-32: protein phosphatase 1 regulatory inhibitor subunit 1B; PTSD: post-traumatic stress disorder; RT: room temperature; SQSTM1/p62: sequestosome 1; SDS-PAGE: sodium dodecyl sulfate-polyacrylamide gel electrophoresis; TBST:Tris-buffered saline, 0.1% Tween 20; TUBA: tubulin; ULK1: unc-51 like autophagy activating kinase 1; VCL: vinculin; WT: littermate controls.


Assuntos
Autofagia , Doença de Huntington , Animais , Autofagia/fisiologia , Proteína Huntingtina/genética , Proteína Huntingtina/metabolismo , Doença de Huntington/metabolismo , Alvo Mecanístico do Complexo 1 de Rapamicina/metabolismo , Camundongos , Neurônios/metabolismo , Proteínas de Ligação a Tacrolimo/metabolismo , Proteínas de Ligação a Tacrolimo/farmacologia
15.
Spinal Cord Ser Cases ; 7(1): 42, 2021 05 25.
Artigo em Inglês | MEDLINE | ID: mdl-34035224

RESUMO

STUDY DESIGN: Retrospective cohort study. OBJECTIVES: To determine the incidence and characteristics of newly injured individuals admitted to a traumatic spinal cord injury (TSCI) referral center during a 4-year period. SETTING: University Hospital of Valle, Cali, Colombia. METHODS: Individuals were identified, and their data was recorded based on the International Spinal Cord Injury Core Data Set. The outcome of interest was the American Spinal Injury Association Impairment Scale (AIS) grade at the last follow-up. RESULTS: There were 491 individuals admitted in the 4-year period. The mean annual incidence of TSCI was 56.27 per million inhabitants. Considering TSCI in individuals exclusively from Cali, the mean annual incidence was 27.78 per million. The leading cause of TSCI was interpersonal violence (47.25%) and falls (33.60%). There was a strong correlation between AIS grade at admission and last follow-up. The most common AIS grade at the last follow-up was E (34.01%) caused mostly by falls (57.48%), followed by A (31.16%) caused mostly by interpersonal violence (76.27%). The reported employment rate dropped from 75.56% to 18.94% before and after TSCI (p < 0.05). AIS grade A was associated with more post-injury complications (p < 0.05). CONCLUSIONS: This is the first cohort study in Colombia describing the incidence and AIS grades of individuals with TSCI from a trauma referral center. Interpersonal violence was overrepresented in this population. Future research should include the evaluation of prevention strategies, as well as research on interventions towards quality improvement in patient care and post-discharge services especially for individuals with AIS grade A.


Assuntos
Assistência ao Convalescente , Traumatismos da Medula Espinal , Estudos de Coortes , Colômbia/epidemiologia , Humanos , Alta do Paciente , Estudos Retrospectivos , Traumatismos da Medula Espinal/epidemiologia , Traumatismos da Medula Espinal/etiologia
16.
Microorganisms ; 8(9)2020 Sep 07.
Artigo em Inglês | MEDLINE | ID: mdl-32906839

RESUMO

An intestinal epithelium model able to produce mucus was developed to provide an environment suitable for testing the therapeutic activity of gut bacteriophages. We show that Enterococcus faecalis adheres more effectively in the presence of mucus, can invade the intestinal epithelia and is able to translocate after damaging tight junctions. Furthermore, Enterococcus phage vB_EfaM_A2 (a member of Herelleviridae that possesses virion associated immunoglobin domains) was found to translocate through the epithelium in the presence and absence of its host bacteria. Phage A2 protected eukaryotic cells by reducing mortality and maintaining the structure of the cell layer structure. We suggest the mammalian cell model utilized within this study as an adaptable in vitro model that can be employed to enable a better understanding of phage-bacteria interactions and the protective impact of phage therapy relating to the intestinal epithelium.

17.
PLoS Genet ; 16(8): e1008962, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32750047

RESUMO

Haspin, a highly conserved kinase in eukaryotes, has been shown to be responsible for phosphorylation of histone H3 at threonine 3 (H3T3ph) during mitosis, in mammals and yeast. Here we report that haspin is the kinase that phosphorylates H3T3 in Drosophila melanogaster and it is involved in sister chromatid cohesion during mitosis. Our data reveal that haspin also phosphorylates H3T3 in interphase. H3T3ph localizes in broad silenced domains at heterochromatin and lamin-enriched euchromatic regions. Loss of haspin compromises insulator activity in enhancer-blocking assays and triggers a decrease in nuclear size that is accompanied by changes in nuclear envelope morphology. We show that haspin is a suppressor of position-effect variegation involved in heterochromatin organization. Our results also demonstrate that haspin is necessary for pairing-sensitive silencing and it is required for robust Polycomb-dependent homeotic gene silencing. Haspin associates with the cohesin complex in interphase, mediates Pds5 binding to chromatin and cooperates with Pds5-cohesin to modify Polycomb-dependent homeotic transformations. Therefore, this study uncovers an unanticipated role for haspin kinase in genome organization of interphase cells and demonstrates that haspin is required for homeotic gene regulation.


Assuntos
Cromatina/genética , Proteínas de Drosophila/genética , Mitose/genética , Proteínas Serina-Treonina Quinases/genética , Animais , Proteínas de Ciclo Celular/genética , Centrômero/genética , Proteínas Cromossômicas não Histona/genética , Segregação de Cromossomos/genética , Drosophila melanogaster/genética , Inativação Gênica , Heterocromatina/genética , Histonas/genética , Interfase/genética , Fosforilação , Proteínas do Grupo Polycomb/genética , Troca de Cromátide Irmã/genética , Treonina/genética
18.
Arch. argent. pediatr ; 118(3): e296-e299, jun. 2020. ilus
Artigo em Espanhol | LILACS, BINACIS | ID: biblio-1116983

RESUMO

La ingesta accidental de más de un imán puede producir complicaciones graves. Los protocolos actuales recomiendan la extracción endoscópica de ser posible. El objetivo de este trabajo es presentar un caso clínico de una ingesta de dos imanes y la técnica endoscópica de extracción. Niño de 11 años que acudió a Urgencias tras la ingesta de dos imanes, asintomático. En la radiografía de abdomen, se identificaron dos cuerpos extraños radiopacos, aparentemente unidos, en la cámara gástrica. Se realizó una endoscopía bajo anestesia general en quirófano. Para facilitar la extracción, se colocó, encima de la pared abdominal, a nivel gástrico, un imán de neodimio. En la endoscopía, se observaron dos pequeños imanes localizados y fijados en la cara anterior del estómago. Una vez localizados, se retiró el imán externo y se procedió a su extracción con cesta


The ingestion of more than one magnet can cause multiple complications. Current protocols recommend endoscopic extraction if possible. We report a patient who swallowed two magnets and the endoscopic extraction technique. An 11-yearold boy presented at the Emergency Room after ingesting two small magnets, being asymptomatic. In the abdominal x-ray two radiopaque bodies were identified at the gastric chamber, apparently together. A gastroscopy was done in the operating room under general anaesthesia. To enable the extraction, a neodymium magnet was placed externally at the abdominal wall. In the endoscopic image, the two magnets were fixed to the anterior gastric wall. Once located, the neodymium magnet was removed and the two magnets were retrieved with an endoscopic basket.


Assuntos
Humanos , Masculino , Adolescente , Imãs , Corpos Estranhos/diagnóstico por imagem , Endoscopia do Sistema Digestório , Neodímio
19.
Arch Argent Pediatr ; 118(3): e296-e299, 2020 06.
Artigo em Espanhol | MEDLINE | ID: mdl-32470269

RESUMO

The ingestion of more than one magnet can cause multiple complications. Current protocols recommend endoscopic extraction if possible. We report a patient who swallowed two magnets and the endoscopic extraction technique. An 11-yearold boy presented at the Emergency Room after ingesting two small magnets, being asymptomatic. In the abdominal x-ray two radiopaque bodies were identified at the gastric chamber, apparently together. A gastroscopy was done in the operating room under general anaesthesia. To enable the extraction, a neodymium magnet was placed externally at the abdominal wall. In the endoscopic image, the two magnets were fixed to the anterior gastric wall. Once located, the neodymium magnet was removed and the two magnets were retrieved with an endoscopic basket.


La ingesta accidental de más de un imán puede producir complicaciones graves. Los protocolos actuales recomiendan la extracción endoscópica de ser posible. El objetivo de este trabajo es presentar un caso clínico de una ingesta de dos imanes y la técnica endoscópica de extracción. Niño de 11 años que acudió a Urgencias tras la ingesta de dos imanes, asintomático. En la radiografía de abdomen, se identificaron dos cuerpos extraños radiopacos, aparentemente unidos, en la cámara gástrica. Se realizó una endoscopía bajo anestesia general en quirófano. Para facilitar la extracción, se colocó, encima de la pared abdominal, a nivel gástrico, un imán de neodimio. En la endoscopía, se observaron dos pequeños imanes localizados y fijados en la cara anterior del estómago. Una vez localizados, se retiró el imán externo y se procedió a su extracción con cesta.


Assuntos
Corpos Estranhos/diagnóstico por imagem , Corpos Estranhos/terapia , Gastroscopia/métodos , Imãs , Estômago/diagnóstico por imagem , Criança , Ingestão de Alimentos , Gastroscopia/instrumentação , Humanos , Masculino , Radiografia
20.
Am J Clin Nutr ; 111(5): 975-982, 2020 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-32246717

RESUMO

BACKGROUND: Many food items included in the Mediterranean diet (MedDiet) are rich in polyamines, small aliphatic amines with potential cardioprotective effects. The consumption of a MedDiet could increase polyamine concentrations. Based on experimental models, polyamine concentrations may be also influenced by physical activity (PA). OBJECTIVES: We aimed to evaluate whether an intervention based on an energy-restricted MedDiet (er-MedDiet) and PA promotion, in comparison with an energy-unrestricted MedDiet and traditional health care, influences the serum pattern of polyamines and related metabolites in subjects at high risk of cardiovascular disease (CVD). METHODS: This was a substudy from the PREDIMED-Plus trial, an ongoing randomized clinical trial including 6874 participants allocated either to an intensive weight-loss lifestyle intervention based on er-MedDiet, PA promotion, and behavioral support (er-MedDiet + PA group), or to an energy-unrestricted MedDiet and traditional health care group (MedDiet group). A total of 75 patients (n = 38, er-MedDiet + PA group; n = 37, MedDiet group) were included in this study. Serum concentrations of arginine, ornithine, polyamines, and acetyl polyamines at baseline and 26 wk of intervention were measured by an ultra-high-performance LC-tandem MS platform. RESULTS: At week 26, study groups had similar adherence to the MedDiet but patients randomly assigned to the er-MedDiet + PA group showed significantly lower mean energy intake (-340.3 kcal/d; 95% CI: -567.3, -113.4 kcal/d; P = 0.004), higher mean PA (1290.6; 95% CI: 39.9, 2541.3 metabolic equivalent tasks · min/d; P = 0.043), and higher mean decrease in BMI (in kg/m2) (-1.3; 95% CI: -1.8, -0.6; P < 0.001) than the MedDiet group. However, no significant differences in serum polyamines or related metabolites were found between study groups after 26 wk of intervention and no significant between-group differences were found in glycated hemoglobin, HDL-cholesterol, or triglyceride concentrations. CONCLUSIONS: In individuals at high CVD risk, an er-MedDiet with increased PA did not result in significant changes of serum concentrations of polyamines or related metabolites in comparison with an energy-unrestricted MedDiet and no increase in PA. This trial was registered at isrctn.com as ISRCTN89898870.


Assuntos
Doenças Cardiovasculares/prevenção & controle , Dieta Mediterrânea , Ingestão de Energia , Exercício Físico , Estilo de Vida , Poliaminas/sangue , Idoso , Feminino , Fatores de Risco de Doenças Cardíacas , Humanos , Masculino , Metaboloma , Pessoa de Meia-Idade
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