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2.
Cien Saude Colet ; 29(5): e00092023, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38747756

RESUMEN

This article aims to identify the association of sociodemographic factors and lifestyle behaviours with bullying perpetration and victimization among high school students. The adolescents (n=852) answered a questionnaire about bullying (victims and perpetrators), sociodemographic factors (sex, age, maternal education, and participant's work status), tobacco use, alcohol use, illicit drug experimentation, physical activity, screen time, and sleep duration. Multilevel logistic regression models were performed. Older adolescents were less likely to be victims of bullying. Females were less likely to be perpetrators or victims of bullying. Adolescents who were working were more likely to be involved in bullying in both forms. Participation in non-sport activities and alcohol consumption were associated with higher odds of bullying victimization. We have identified specific populational subgroups that are more susceptible to being victims and/or perpetrators of bullying, which could support tailor-specific interventions to prevent bullying.


Asunto(s)
Acoso Escolar , Víctimas de Crimen , Estilo de Vida , Estudiantes , Humanos , Adolescente , Brasil , Femenino , Acoso Escolar/estadística & datos numéricos , Masculino , Víctimas de Crimen/estadística & datos numéricos , Víctimas de Crimen/psicología , Encuestas y Cuestionarios , Estudiantes/estadística & datos numéricos , Estudiantes/psicología , Factores Sociodemográficos , Factores Sexuales , Estudios Transversales , Factores de Edad , Consumo de Bebidas Alcohólicas/epidemiología , Conducta del Adolescente/psicología
3.
Artículo en Inglés | MEDLINE | ID: mdl-38690939

RESUMEN

BACKGROUND: High levels of testosterone (Testo) are associated with cardiovascular risk by increasing reactive oxygen species (ROS) formation. NADPH oxidases (NOX) are the major source of ROS in the vasculature in cardiovascular diseases. NOX4 is a unique isotype, which produces hydrogen peroxide (H2O2), and its participation in cardiovascular biology is controversial. So far, it is unclear whether NOX4 protects from Testo-induced endothelial injury. Thus, we hypothesized that supraphysiological levels of Testo induce endothelial NOX4 expression to attenuate endothelial injury. METHODS: Human Mesenteric Vascular Endothelial Cells (HMEC) and Human Umbilical Vein Endothelial Cells (HUVEC) were treated with Testo (10-7 M) with or without a NOX4 inhibitor [GLX351322 (10-4 M)] or NOX4 siRNA. In vivo, 10-week-old C57Bl/6J male mice were treated with Testo (10 mg/kg) for 30 days to study endothelial function. RESULTS: Testo increased mRNA and protein levels of NOX4 in HMEC and HUVEC. Testo increased superoxide anion (O2-) and H2O2 production, which were abolished by NOX1 and NOX4 inhibition, respectively. Testo also attenuated bradykinin-induced NO production, which was further impaired by NOX4 inhibition. In vivo, Testo decreased H2O2 production in aortic segments and triggered endothelial dysfunction [decreased relaxation to acetylcholine (ACh)], which was further impaired by GLX351322 and by a superoxide dismutase and catalase mimetic (EUK134). Finally, Testo led to a dysregulated endothelial cells migration, which was exacerbated by GLX351322. CONCLUSION: These data indicate that supraphysiological levels of Testo increase the endothelial expression and activity of NOX4 to counterbalance the deleterious effects caused by Testo in endothelial function.

4.
Vaccine ; 42(15): 3384-3388, 2024 May 31.
Artículo en Inglés | MEDLINE | ID: mdl-38664072

RESUMEN

The persistence of varicella outbreaks in Brazil has underscored the high concern with the low vaccine coverage in the last 4 years. Using publicly available data from the Brazilian Health System (SUS), this study analyzed varicella vaccine coverage and incidence trends from 2019 to 2022 in Brazilian States. Vaccine coverage decreased nationally in 2020, possibly influenced by the COVID-19 pandemic's initial phase. In Bahia State, we have the persistence of varicella with an incidence rate of 3.0 cases per 100,000 inhabitants (higher incidence compared to other States) in 2023. Under 15 months children and young children (4-6 Years old) faced the highest risk, urging the importance of vaccination. Despite a monovalent varicella vaccine being available through Brazil's National Immunization Program (NIP), Bahia fell short of achieving the ≥95 % disease control target for coverage. The study highlight the importance of vaccines to prevent some infectious diseases, as varicella, in poor tropical regions. Addressing vaccine hesitancy and misinformation, and augmenting awareness campaigns, are important to achieve and sustain high vaccine coverage over 80% as WHO guidelines to obtain a safe rate of protection for Brazilian population (Brazil's national immunization program has a target of 95% coverage).


Asunto(s)
Vacuna contra la Varicela , Varicela , Brotes de Enfermedades , Programas de Inmunización , Cobertura de Vacunación , Humanos , Brasil/epidemiología , Varicela/prevención & control , Varicela/epidemiología , Vacuna contra la Varicela/administración & dosificación , Vacuna contra la Varicela/inmunología , Preescolar , Cobertura de Vacunación/estadística & datos numéricos , Niño , Lactante , Brotes de Enfermedades/prevención & control , Incidencia , Adolescente , Femenino , Masculino , COVID-19/prevención & control , COVID-19/epidemiología , Adulto , Vacunación/estadística & datos numéricos , Adulto Joven
5.
Artículo en Inglés | MEDLINE | ID: mdl-38643455

RESUMEN

Estrone (E1) constitutes the primary component in oral conjugated equine estrogens (CEEs) and serves as the principal estrogen precursor in the female circulation in the post-menopause. E1 induces endothelium-dependent vasodilation and activate PI3K/NO/cGMP signaling. To assess whether E1 mitigates vascular dysfunction associated with postmenopause and explore the underlying mechanisms, we examined the vascular effects of E1 in ovariectomized (OVX) rats, a postmenopausal experimental model. Blood pressure was measured using tail-cuff plethysmography, and aortic rings were isolated to assess responses to phenylephrine, acetylcholine (ACh), and sodium nitroprusside. Responses to ACh in rings pre-incubated with superoxide dismutase (SOD), catalase (CAT), or apocynin were also evaluated. Protein expression of SOD, CAT, NOX1, NOX2, and NOX4 was determined by Western blotting. E1 treatment resulted in decreased body weight and retroperitoneal fat, increased uterine weight, and prevented elevated blood pressure in the OVX group. Furthermore, E1 improved endothelium-dependent ACh vasodilation, activated compensatory antioxidant mechanisms - i.e. increased SOD and CAT antioxidant enzymes activity, and decreased NOX4 expression. This, in turn, helped prevent oxidative stress and endothelial dysfunction in OVX rats. Additionally, E1 treatment reversed the increased total LDL cholesterol observed in the OVX group. The findings underscore protective effects of E1 on the cardiovascular system, counteracting OVX-related oxidative stress and endothelial dysfunction in Wistar rats. E1 exhibits promising therapeutic benefits for managing cardiovascular health, particularly in postmenopausal conditions.

6.
BMC Public Health ; 24(1): 1080, 2024 Apr 18.
Artículo en Inglés | MEDLINE | ID: mdl-38637757

RESUMEN

Movement-related behaviors (physical activity [PA], sedentary behavior [SB], and sleep) and diet interact with each other and play important roles in health indicators in youth. This systematic review aimed to investigate how PA, SB, sleep, and diet cluster in youth by biological sex; and to examine which cluster are associated with health indicators. This study was registered in PROSPERO (number: CRD42018094826). Five electronic databases were assessed. Eligibility criteria allowed studies that included youth (aged 19 years and younger), and only the four behaviors {PA, SB, sleep, and diet (ultra-processed foods [UPF]; fruits and vegetables [FV])} analyzed by applying data-based cluster procedures. From 12,719 articles screened; 23 were included. Of these, four investigated children, and ten identified clusters by biological sex. Sixty-six mixed cluster were identified including, 34 in mixed-sex samples, 10 in boys and 11 in girls. The most frequent clusters in mixed-sex samples were "High SB UPF Low Sleep", "Low PA High SB Satisfactory Sleep", and "High PA". The main difference in profiles according to sex was that girls' clusters were characterized by high sleep duration, whereas boys' clusters by high PA. There were a few associations found between cluster types and health indicators, highlighting that youth assigned to cluster types with low PA exhibited higher adiposity. In conclusion, the youth presented a range of clusters of behaviors, typically exhibiting at least one unhealthy behavior. Similar patterns were observed in both sexes with the biggest difference in time of sleep for girls and PA for boys. These findings underscore the importance of intervention strategies targeting multiple behaviors simultaneously to enhance health risk profiles and indicators in children and adolescents.


Asunto(s)
Dieta , Ejercicio Físico , Obesidad , Conducta Sedentaria , Adolescente , Niño , Femenino , Humanos , Masculino , Conductas Relacionadas con la Salud , Actividad Motora , Sueño
7.
Pan Afr Med J ; 47: 58, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38646138

RESUMEN

Granulosa cell tumor (GCT) is a rare ovarian malignancy that represents only 2-3% of all cases. There are two subtypes of GCT: juvenile/JGCT (5% of cases) and adult/AGCT (95% of cases). This study aimed to describe a series of 6 GCT cases. The 6 study patients were managed from June 2011 to November 2022 in a private oncology clinic located in Teresina (PI), Brazil. At diagnosis, the mean patient age was 47 years, and symptoms in 5 patients (83%) were pelvic pain and/or increased abdominal volume. The majority of the patients (N=4/67%) had no comorbidities or findings related to GCT on physical examination. The mean tumor size was 11 cm. Five (83%) tumors were stage Ia and one tumor (17%) was stage III. Regarding tumor subtype, 5 (83%) were AGCT and 1 (17%) was JGCT. Surgical treatment consisted of unilateral salpingo-ophorectomy in 2 patients (33%), total hysterectomy and bilateral salpingo-ophorectomy in 3 patients (50%), and cytoreduction (suboptimal) in 1 patient (17%). After a mean follow-up period of 62.7 months, 5 patients (83%) are still alive and free of disease. One (17%) died from disease progression after 126 months. In the current study, disease-free overall survival was 83%, in a mean follow-up period of 62.7 months.


Asunto(s)
Tumor de Células de la Granulosa , Estadificación de Neoplasias , Neoplasias Ováricas , Humanos , Femenino , Tumor de Células de la Granulosa/patología , Tumor de Células de la Granulosa/diagnóstico , Tumor de Células de la Granulosa/cirugía , Persona de Mediana Edad , Adulto , Neoplasias Ováricas/patología , Neoplasias Ováricas/diagnóstico , Brasil , Histerectomía , Estudios de Seguimiento , Procedimientos Quirúrgicos de Citorreducción/métodos , Anciano , Estudios Retrospectivos , Dolor Pélvico/etiología
8.
J Neurol Surg Rep ; 85(2): e29-e38, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38596232

RESUMEN

Background Spinal epidural abscess is a rare but serious condition that can cause spinal cord compression and neurological deficits. Case Description and Methods The article reports a case of a 31-year-old patient who presented with an infectious cellulitis in the left hand, which progressed to a spinal epidural abscess. The diagnosis was confirmed by clinical examination and magnetic resonance imaging. Treatment involved laminectomy, after which the patient had complete recovery of neurological deficits. This article is a case report with a literature review. Patient data and images were collected by the researchers who participated in the patient's care. The literature was reviewed by one of the researchers based on the search for articles in the PubMed database. For the research, the following keywords were inserted: "Spinal epidural empyema," "Spinal epidural abscess." Conclusion Spinal epidural abscess is often underdiagnosed, which can lead to delays in treatment and serious complications. The relationship between cellulitis and spinal epidural abscess may be related to the spread of infection through the lymphatic or blood system.

9.
Am J Physiol Endocrinol Metab ; 326(5): E555-E566, 2024 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-38446637

RESUMEN

Prenatal exposure to maternal diabetes has been recognized as a significant cardiovascular risk factor, increasing the susceptibility to the emergence of conditions such as high blood pressure, atherosclerosis, and heart disease in later stages of life. However, it is unclear if offspring exposed to diabetes in utero have worse vascular outcomes on a high-salt (HS) diet. To test the hypothesis that in utero exposure to maternal diabetes predisposes to HS-induced vascular dysfunction, we treated adult male wild-type offspring (DM_Exp, 6 mo old) of diabetic Ins2+/C96Y mice (Akita mice) with HS (8% sodium chloride, 10 days) and analyzed endothelial function via wire myograph and cyclooxygenase (COX)-derived prostanoids pathway by ELISA, quantitative PCR, and immunochemistry. On a regular diet, DM_Exp mice did not manifest any vascular dysfunction, remodeling, or inflammation. However, HS increased aortic contractility to phenylephrine and induced endothelial dysfunction (analyzed by acetylcholine-induced endothelium-dependent relaxation), vascular hydrogen peroxide production, COX2 expression, and prostaglandin E2 (PGE2) overproduction. Interestingly, ex vivo antioxidant treatment (tempol) or COX1/2 (indomethacin) or COX2 (NS398) inhibitors improved or reverted the endothelial dysfunction in DM_Exp mice fed a HS diet. Finally, DM_Exp mice fed with HS exhibited greater circulating cytokines and chemokines accompanied by vascular inflammation. In summary, our findings indicate that prenatal exposure to maternal diabetes predisposes to HS-induced vascular dysfunction, primarily through the induction of oxidative stress and the generation of COX2-derived PGE2. This supports the concept that in utero exposure to maternal diabetes is a cardiovascular risk factor in adulthood.NEW & NOTEWORTHY Using a unique mouse model of prenatal exposure to maternal type 1 diabetes, our study demonstrates the novel observation that prenatal exposure to maternal diabetes results in a predisposition to high-salt (HS) dietary-induced vascular dysfunction and inflammation in adulthood. Mechanistically, we demonstrated that in utero exposure to maternal diabetes and HS intake induces vascular oxidative stress, cyclooxygenase-derived prostaglandin E2, and inflammation.


Asunto(s)
Diabetes Gestacional , Endotelio Vascular , Efectos Tardíos de la Exposición Prenatal , Prostaglandinas , Animales , Femenino , Ratones , Embarazo , Ciclooxigenasa 2/metabolismo , Diabetes Gestacional/metabolismo , Endotelio Vascular/metabolismo , Endotelio Vascular/patología , Inflamación/metabolismo , Efectos Tardíos de la Exposición Prenatal/metabolismo , Prostaglandinas/metabolismo , Cloruro de Sodio Dietético/efectos adversos , Cloruro de Sodio Dietético/metabolismo
10.
Rev. bras. cir. plást ; 39(1): 1-4, jan.mar.2024. ilus
Artículo en Inglés, Portugués | LILACS-Express | LILACS | ID: biblio-1552872

RESUMEN

Introdução: O carcinoma basocelular (CBC) de vulva é uma condição rara que corresponde a menos de 0,4% dos casos de CBC e de 2% a 4% das neoplasias de vulva. O CBC de vulva é mais comum entre mulheres brancas, multíparas e na pósmenopausa, especialmente na sétima década de vida. O objetivo é relatar um caso de CBC de vulva no qual discutiram-se os aspectos do diagnóstico e tratamento. Relato de Caso: Mulher de 63 anos de idade, G1P1A0, chega ao consultório em janeiro de 2022 para tratamento de lesão persistente em vulva. Realizou-se biópsia incisional que mostrou tratar-se de provável carcinoma basocelular nodular com invasão da derme. A paciente submeteu-se a uma ressecção do tumor com margens macroscópicas livres e sutura primária. A cirurgia não teve complicações no pré-operatório e no pós-operatório. O histopatológico da peça cirúrgica mostrou tratar-se de carcinoma basocelular nodular com área irregular, plana, branco, medindo 0,7x0,4cm, com as margens laterais distando 7,0 e 5,0mm e profundas, 5,9mm; todas livres. Conclusão: O caso relatado é raro, tendo sido o tratamento de ressecção cirúrgica do CBC de vulva com margens bem-sucedido. Catorze meses após a cirurgia, a paciente encontra-se sem evidências de recidiva local ou regional.


Introduction: Basal cell carcinoma (BCC) of the vulva is a rare condition that accounts for less than 0.4% of BCC cases and 2% to 4% of vulvar neoplasms. BCC of the vulva is more common among white, multiparous and postmenopausal women, especially in the seventh decade of life. The aim is to report a case of BCC of the vulva in which aspects of diagnosis and treatment were discussed. Case report: A 63-year-old woman, G1P1A0, arrives at the office in January 2022 for treatment of a persistent lesion on her vulva. An incisional biopsy was performed and showed that it was likely nodular basal cell carcinoma with invasion of the dermis. The patient underwent tumor resection with free macroscopic margins and primary suture. The surgery had no complications preoperatively or postoperatively. The histopathology of the surgical specimen showed that it was a nodular basal cell carcinoma with an irregular, flat, white area, measuring 0.7x0.4cm, with the lateral margins 7.0 and 5.0mm apart and 5.9mm deep; all free. Conclusion: The reported case is rare, with surgical resection of BCC of the vulva with margins being successful. Fourteen months after surgery, the patient has no evidence of local or regional recurrence.

11.
Cytokine ; 176: 156503, 2024 04.
Artículo en Inglés | MEDLINE | ID: mdl-38301358

RESUMEN

Orosomucoid, or alpha-1 acid glycoprotein (AGP), is a major acute-phase protein expressed in response to systemic injury and inflammation. AGP has been described as an inhibitor of neutrophil migration on sepsis, particularly its immunomodulation effects. AGP's biological functions in coronavirus disease 2019 (COVID-19) are not understood. We sought to investigate the role of AGP in severe COVID-19 infection patients and neutrophils infected with severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Epidemiological data, AGP levels, and other laboratory parameters were measured in blood samples from 56 subjects hospitalized in the ICU with SARS-CoV-2 infection. To evaluate the role of AGP in NETosis in neutrophils, blood samples from health patients were collected, and neutrophils were separated and infected with SARS-CoV-2. Those neutrophils were treated with AGP or vehicle, and NETosis was analyzed by flow cytometry. AGP was upregulated in severe COVID-19 patients (p<0.05). AGP level was positively correlated with IL-6 and C-reactive protein (respectively, p=0.005, p=0.002) and negatively correlated with lactate (p=0.004). AGP treatment downregulated early and late NETosis (respectively, 35.7% and 43.5%) in neutrophils infected with SARS-CoV-2 and up-regulated IL-6 supernatant culture expression (p<0.0001). Our data showed increased AGP in COVID-19 infection and contributed to NETosis regulation and increased IL-6 production, possibly related to the Cytokine storm in COVID-19.


Asunto(s)
COVID-19 , Humanos , COVID-19/metabolismo , Neutrófilos/metabolismo , Orosomucoide/metabolismo , Orosomucoide/farmacología , SARS-CoV-2 , Interleucina-6/metabolismo , Proteínas Tirosina Quinasas Receptoras/metabolismo , Inmunoproteínas/metabolismo
12.
Food Chem ; 446: 138808, 2024 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-38408398

RESUMEN

Calystegines are potent glycosidase inhibitors with therapeutic potential and are constituents of food and feed with potential toxic effects. This study aims to target calystegines and other nitrogenous substances in food plants. Hydroalcoholic extracts from Solanum tuberosum, Ipomoea batatas, S. lycocarpum, and fruit from S. lycopersicum, S. aethiopicum, S. paniculatum, S. crinitum, and S. acanthodes were analyzed by liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) using an acidic HILIC column. The dereplication approach included data processing using MZMine2, FBMN-GNPS, and structure elucidation and interpretation of the organized data. The calystegines A3, A5, B2, and C1 were identified, and several potential new calystegine analogues: three may correspond to new calystegines of the A-group, one glycosyl derivative of calystegine A3, and two glycosyl derivatives of the B-group. These findings help to direct the search for new calystegines. In addition, the dereplication approach enabled the annotation of 22 other nitrogen compounds.


Asunto(s)
Solanum , Plantas Comestibles , Espectrometría de Masas en Tándem , Frutas , Brasil
13.
Cureus ; 16(1): e52811, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38389591

RESUMEN

Melanoma of the uterine cervix is an exceedingly rare malignancy that has high recurrence rates and distant metastases. In general, surgery is the preferred treatment for this tumor, and depending on stage additional consideration to radiotherapy and chemotherapy. Immunotherapy has emerged as a new treatment option in this context. The aim of this study was to report a case of melanoma of the uterine cervix that progressed rapidly to death while the patient was undergoing immunotherapy with nivolumab. A 39-year-old woman presented with an amelanotic ulcerated lesion of the uterine cervix in February of 2023. Histopathology study demonstrated melanoma of the uterine cervix. Treatment was initiated with surgery. Two months after cancer diagnosis, the tumor board decided to initiate adjuvant treatment with nivolumab. After four cycles of immunotherapy, progression of the disease occurred with death of the patient within six months of follow-up. The rare case presented illustrates the aggressive natural history of the tumor and possible use of immunotherapy in this context, despite current evidence that response to nivolumab is less effective in cervical melanoma than in skin melanoma.

14.
Hypertension ; 81(4): 776-786, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38240165

RESUMEN

BACKGROUND: Aldosterone has been described to initiate cardiovascular diseases by triggering exacerbated sterile vascular inflammation. The functions of CCL5 (C-C motif chemokine ligand 5) and its receptor CCR5 (C-C motif chemokine receptor 5) are well known in infectious diseases, their contributions to aldosterone-induced vascular injury and hypertension remain unknown. METHODS: We analyzed the vascular profile, blood pressure, and renal damage in wild-type (CCR5+/+) and CCR5 knockout (CCR5-/-) mice treated with aldosterone (600 µg/kg per day for 14 days) while receiving 1% saline to drink. Vascular function was analyzed in aorta and mesenteric arteries, blood pressure was measured by telemetry and renal injury and inflammation were analyzed via histology and flow cytometry. Endothelial cells were used to study the molecular signaling whereby CCL5 induces endothelial dysfunction. RESULTS: Aldosterone treatment resulted in exaggerated CCL5 circulating levels and vascular CCR5 expression in CCR5+/+ mice accompanied by endothelial dysfunction, hypertension, and renal inflammation and damage. CCR5-/- mice were protected from these aldosterone-induced effects. Mechanistically, we demonstrated that CCL5 increased NOX1 (NADPH oxidase 1) expression, reactive oxygen species formation, NFκB (nuclear factor kappa B) activation, and inflammation and reduced NO production in isolated endothelial cells. These effects were abolished by antagonizing CCR5 with Maraviroc. Finally, aorta incubated with CCL5 displayed severe endothelial dysfunction, which is prevented by blocking NOX1, NFκB, or CCR5. CONCLUSIONS: Our data demonstrate that CCL5/CCR5, through activation of NFκB and NOX1, is critically involved in aldosterone-induced vascular and renal damage and hypertension placing CCL5 and CCR5 as potential therapeutic targets for conditions characterized by aldosterone excess.


Asunto(s)
Aldosterona , Quimiocina CCL5 , Hipertensión , Receptores CCR5 , Animales , Ratones , Aldosterona/farmacología , Células Endoteliales/metabolismo , Hipertensión/inducido químicamente , Hipertensión/metabolismo , Inflamación , Receptores CCR5/genética , Receptores CCR5/metabolismo , Quimiocina CCL5/genética , Quimiocina CCL5/metabolismo
15.
Behav Sleep Med ; 22(2): 129-139, 2024 Mar 03.
Artículo en Inglés | MEDLINE | ID: mdl-37154038

RESUMEN

OBJECTIVES: This cross-sectional study aimed to examine the relationships of sleep timing and sleep variability with depressive symptoms, health-related quality of life (HRQoL), daytime sleepiness, and body mass index (BMI) in adolescents. METHODS: Adolescents from three schools (n = 571, 56% female, 16.3 ± 1.0 years) had their sleep examined by actigraphy, their anthropometrics assessed, and answered a survey. Sleep timing was examined by combining groups of median-dichotomized onset and wakeup times (early onset and early wakeup; early onset and late wakeup; later onset and early wakeup; later onset and later wakeup); sleep variability was based on within-participant standard deviations of onset and wakeup; and sleep duration as the length of time between onset and wakeup. The sleep variables were separated for weekdays and weekend. Mixed linear models were fitted to compare each sleep variable with health-related outcomes. RESULTS: Higher values of daytime sleepiness were observed in adolescents from the late-early and late-late timing group during the week. Greater sleep midpoint and wakeup variability on weekdays were related with higher daytime sleepiness. Adolescents in the late-late and early-late groups showed higher daytime sleepiness. Increased of all sleep variability variables was related with greater daytime sleepiness. Higher depressive symptoms scores were found among adolescents in the late-early subgroup and with the increase of sleep variability. Participants with greater sleep onset variability and sleep midpoint variability reported less HRQoL. CONCLUSIONS: Not only sleep duration, but sleep timing and variability also relate to health outcomes, and should be addressed by policies and interventions among adolescents.


Asunto(s)
Trastornos de Somnolencia Excesiva , Calidad de Vida , Humanos , Femenino , Adolescente , Masculino , Estudios Transversales , Brasil/epidemiología , Sueño , Trastornos de Somnolencia Excesiva/epidemiología
16.
Life Sci ; 338: 122361, 2024 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-38158040

RESUMEN

AIMS: Overproduction of reactive oxygen species (ROS) is a pathologic hallmark of cyclophosphamide toxicity. For this reason, antioxidant compounds emerge as promising tools for preventing tissue damage induced by cyclophosphamide. We hypothesized that melatonin would display cytoprotective action in the vasculature by preventing cyclophosphamide-induced oxidative stress. MATERIALS AND METHODS: Male C57BL/6 mice (22-25 g) were injected with a single dose of cyclophosphamide (300 mg/kg; i.p.). Mice were pretreated or not with melatonin (10 mg/kg/day, i.p.), given during 4 days before cyclophosphamide injection. Functional (vascular reactivity) and oxidative/inflammatory patterns were evaluated at 24 h in resistance arteries. The antioxidant action of melatonin was assessed in vitro in cultured vascular smooth muscle cells (VSMCs) of mesenteric arteries. KEY FINDINGS: Cyclophosphamide induced ROS generation in both mesenteric arterial bed (MAB) and cultured VSMCs, and this was normalized by melatonin. Cyclophosphamide-induced ROS generation and lipoperoxidation in the bladder and kidney was also prevented by melatonin. Increased levels of tumor necrosis factor (TNF)-α and interleukin (IL)-6 were detected in the MAB of cyclophosphamide-treated mice, all of which were prevented by melatonin. Functional assays using second-order mesenteric arteries of cyclophosphamide-treated mice revealed a decrease in vascular contractility. Melatonin prevented vascular hypocontractility in the cyclophosphamide group. Melatonin partially prevented the decrease in myeloperoxidase (MPO) and N-acetyl-beta-D-glucosaminidase (NAG) activities in the MAB of the cyclophosphamide group. SIGNIFICANCE: Melatonin may constitute a novel and promising therapeutic approach for management of the toxic effects induced by cyclophosphamide in the vasculature.


Asunto(s)
Melatonina , Ratones , Masculino , Animales , Especies Reactivas de Oxígeno/farmacología , Melatonina/uso terapéutico , Antioxidantes/metabolismo , Ratones Endogámicos C57BL , Ciclofosfamida/toxicidad , Estrés Oxidativo , Arterias Mesentéricas/metabolismo
17.
Biochem Pharmacol ; 220: 115982, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38097051

RESUMEN

Hyperglycemia is a major risk factor for kidney diseases. Oxidative stress, caused by reactive oxygen species, is a key factor in the development of kidney abnormalities related to hyperglycemia. The nuclear factor erythroid 2-related factor-2 (Nrf2) plays a crucial role in defending cells against oxidative stress by activating genes that produce antioxidants. L-sulforaphane (SFN), a drug that activates Nrf2, reduces damage caused by hyperglycemia. Hyperglycemic Wistar rats and HEK 293 cells maintained in hyperglycemic medium exhibited decreased Nrf2 nuclear translocation and reduced expression and activity of antioxidant enzymes. SFN treatment increased Nrf2 activity and reversed decreased renal function, oxidative stress and cell death associated with hyperglycemia. To investigate mechanisms involved in hyperglycemia-induced reduced Nrf2 activity, we addressed whether Nrf2 is modified by O-linked ß-N-acetylglucosamine (O-GlcNAc), a post-translational modification that is fueled in hyperglycemic conditions. In vivo, hyperglycemia increased O-GlcNAc-modified Nrf2 expression. Increased O-GlcNAc levels, induced by pharmacological inhibition of OGA, decreased Nrf2 activity in HEK 293 cells. In conclusion, hyperglycemia reduces Nrf2 activity, promoting oxidative stress, cell apoptosis and structural and functional renal damage. Pharmacological treatment with SFN attenuates renal injury. O-GlcNAcylation negatively modulates Nrf2 activity and represents a potential mechanism leading to oxidative stress and renal damage in hyperglycemic conditions.


Asunto(s)
Hiperglucemia , Enfermedades Renales , Animales , Humanos , Ratas , Antioxidantes/metabolismo , Apoptosis , Células HEK293 , Hiperglucemia/complicaciones , Hiperglucemia/metabolismo , Riñón/metabolismo , Enfermedades Renales/metabolismo , Factor 2 Relacionado con NF-E2/genética , Factor 2 Relacionado con NF-E2/metabolismo , Estrés Oxidativo , Ratas Wistar , Sulfóxidos
18.
Acta Med Port ; 36(12): 811-818, 2023 Dec 04.
Artículo en Inglés | MEDLINE | ID: mdl-38048689

RESUMEN

INTRODUCTION: Mental health warrants exist in most countries and are issued when patients have severe mental illness, refuse treatment, and present a serious risk to themselves or others. We describe the epidemiology of mental health warrant requests received, and warrants issued by a Public Health Unit in a Portuguese region, as well as subsequent hospital admissions before and during the COVID-19 pandemic. METHODS: We used routine administrative data of mental health warrant request entries from a Public Health Unit serving a population of 219 739 individuals and compared the average of monthly requests, issued warrants, and hospital admissions during two separate periods (January 2013 to January 2021 and February 2021 to October 2022) as well as the proportion of warrants issued, hospital admissions among requests, and other patient characteristics. We identified factors associated with hospital admissions among the requests using logistic regression. RESULTS: Monthly average warrant requests, issued warrants and hospital admissions increased after February 2021 (x̄ 2.87 vs 7.09 p < 0.001; x̄ 2.67 vs 6.42 p < 0.001; x̄ 1.55 vs 3.58 p < 0.001). We found no differences by period in the proportion of requests with issued warrants (92.8% vs 90.6% p = 0.42) nor the proportion of requests with subsequent hospital admissions (54.0% vs 49.0% p = 0.33). In the second period, there were differences in the proportion of patients with a previously diagnosed mental health disorder (95.3% vs 90.4% p = 0.049). There were significant differences in the distribution of the origin of requests. Being unemployed (OR:2.5 CI:1.2 - 5.2), not having completed high school (OR:2.01 CI:1.12 - 3.77) and having university education (OR:3.67 CI:1.27 - 10.57) degree were associated with hospital admission. CONCLUSION: Severe mental illness with criteria for mental health warrants may require more resources and different approaches due to a possible increase during and after the COVID-19 pandemic. Community based mental healthcare, incentivized follow-up by primary care and ambulatory treatment may be considered. Further research should evaluate both the national and international trends and associated factors.


Asunto(s)
COVID-19 , Humanos , COVID-19/epidemiología , Portugal/epidemiología , Salud Mental , Pandemias , Hospitales
19.
Radiología (Madr., Ed. impr.) ; 65(6): 509-518, Nov-Dic. 2023. ilus, tab
Artículo en Español | IBECS | ID: ibc-227227

RESUMEN

Objetivo: La rápida progresión de la neumonía COVID-19 puede implicar la necesidad de recurrir a sistemas de respiración asistida, como la ventilación mecánica no invasiva o la intubación endotraqueal. La introducción de herramientas que detecten la neumonía COVID-19 puede mejorar la atención sanitaria de los pacientes. Nuestro objetivo es evaluar la eficacia y la eficiencia de la herramienta de inteligencia artificial (IA) Thoracic Care Suite de GE Healthcare (que incorpora Lunit Insight CXR) para predecir la necesidad de recurrir a la respiración asistida en función de la progresión de la neumonía en la COVID-19 en radiografías torácicas consecutivas. Métodos: Se incluyó a pacientes ambulatorios con infección por SARS-CoV-2 confirmada, con hallazgos probables o indeterminados de neumonía COVID-19 en la radiografía torácica (RXT) y que necesitaron una segunda RXT debido a la evolución clínica desfavorable. En las 2RXT se evaluaron el número de campos pulmonares afectados mediante la herramienta de IA. Resultados: Se incluyó a 114 pacientes (57,4±14,2 años; 65 de ellos varones, el 57%) de forma retrospectiva; 15 pacientes (el 13,2%) precisaron respiración asistida. La progresión de la diseminación neumónica ≥0,5 campos pulmonares al día en comparación con el inicio de la neumonía, detectada mediante la herramienta TCS, cuadruplicó el riesgo de precisar respiración asistida. El análisis de los resultados de IA precisó 26 segundos. Conclusiones: Aplicar la herramienta de IA, Thoracic Care Suite, a la RXT de pacientes con neumonía COVID-19 nos permite predecir la necesidad de recurrir a la respiración asistida en menos de medio minuto.(AU)


Objective: Rapid progression of COVID-19 pneumonia may put patients at risk of requiring ventilatory support, such as non-invasive mechanical ventilation or endotracheal intubation. Implementing tools that detect COVID-19 pneumonia can improve the patient's healthcare. We aim to evaluate the efficacy and efficiency of the artificial intelligence (AI) tool GE Healthcare's Thoracic Care Suite (featuring Lunit Insight CXR, TCS) to predict the ventilatory support need based on pneumonic progression of COVID-19 on consecutive chest X-rays. Methods: Outpatients with confirmed SARS-CoV-2 infection, with chest X-ray (CXR) findings probable or indeterminate for COVID-19 pneumonia, who required a second CXR due to unfavorable clinical course, were collected. The number of affected lung fields for the 2CXRs was assessed using the AI tool. Results: One hundred fourteen patients (57.4±14.2 years; 65 of them were men, 57%) were retrospectively collected; and 15 (13.2%) required ventilatory support. Progression of pneumonic extension ≥ 0.5 lung fields per day compared to pneumonia onset, detected using the TCS tool, increased the risk of requiring ventilatory support by 4-fold. Analyzing the AI output required 26seconds of radiological time. Conclusions: Applying the AI tool, Thoracic Care Suite, to CXR of patients with COVID-19 pneumonia allows us to anticipate ventilatory support requirements requiring less than half a minute.(AU)


Asunto(s)
Humanos , Masculino , Femenino , Inteligencia Artificial , Neumonía/diagnóstico por imagen , /diagnóstico por imagen , Radiografía Torácica , Tecnología Biomédica , Atención Ambulatoria , Radiología , Servicio de Radiología en Hospital , Tecnología
20.
Rev Enferm UFPI ; 12(1): e3383, 2023-12-12. tab e graf
Artículo en Inglés, Portugués | LILACS, BDENF - Enfermería | ID: biblio-1523910

RESUMEN

Objetivo: Identificar as principais dificuldades durante o tratamento e pós-alta de pacientes com hanseníase atendidos na Atenção Secundária em Teresina-Piauí e seu perfil epidemiológico. Métodos: Trata-se de um estudo transversal, quantitativo, que identificou necessidades e levantou dados de pacientes em tratamento de hanseníase em um serviço de referência localizado em Teresina-Piauí. Resultados: Na amostra, observou-se predomínio de pacientes do sexo masculino (58,5%), casados ou em união estável (54,7%), com ensino fundamental completo (62,3%), renda de 1 a 2 salários mínimos (66,0%) e residentes em Teresina-Piauí (90,6%). A idade média dos pacientes foi 53 anos. 9,4% abandonaram o tratamento. No pós-alta, 90,6% dos pacientes apresentaram algum tipo de sequela. Notou-se que a ausência de conhecimento sobre a hanseníase retardou o acesso ao sistema de saúde. Verificou-se associação significativa entre a variável presença de sequela e alteração de sensibilidade (p=0,014). Os relatos de preconceito foram mais frequentes durante o tratamento (41,5%), em relação ao pós-alta (15,1%). Conclusão: A hanseníase ainda é uma doença negligenciada, estigmatizada e de difícil diagnóstico, sendo necessário maiores investimentos em políticas públicas para a difusão de conhecimentos sobre a doença. Descritores: Hanseníase; Terapêutica; Perfil de Saúde; Conhecimento; Estigma Social.


Objective: To identify the main difficulties and the epidemiological profile during treatment and post-discharge in patients with leprosy treated at the Secondary Care level in Teresina-Piauí.Methods: This is a cross-sectional and quantitative study that identified needs and surveyed data from patients undergoing leprosy treatment in a reference service located in Teresina-Piauí.Results: In the sample, there was predominance of male patients (58.5%), married or in a stable union (54.7%), with complete Elementary School (62.3%), incomes of 1 to 2 minimum wages (66.0%) and residents of Teresina-Piauí (90.6%). The mean age of the patients was 53years old. 9.4% abandoned the treatment. 90.6% of the patients presented some type of sequelae post-discharge. It was noticed that lack of knowledge about leprosy delayed access to the health system. A significant association was verified between the "presence of sequelae" variable and change in sensitivity (p = 0.014). The reports about prejudice were more frequent during the treatment (41.5%) than in the post-discharge period(15.1%). Conclusion: Leprosy is still a neglected, stigmatized and difficult to diagnose disease, with a need for greater investments in public policies to disseminate knowledge about the disease. Descriptors: Leprosy; Therapy; Health Profile; Knowledge; Social Stigma.


Asunto(s)
Terapéutica , Perfil de Salud , Conocimiento , Estigma Social , Lepra
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