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PURPOSE: To examine the relationship of key individual and family self-management theory (IFSMT) components, including self-management process variables on proximal (self-management behaviors) and distal (falls) outcomes in older adults. METHOD: A secondary data analysis was conducted using data of 99 older adults living in continuing care retirement communities in the U.S. Midwest. Descriptive statistics, multiple regression, and logistic regression were performed to analyze the data. RESULTS: The multiple regression model demonstrated a positive association between self-efficacy for physical activity and steps per day. The logistic regression model showed that high expectations regarding aging are associated with reduced likelihood of meeting daily protein intake. CONCLUSION: Key components of the IFSMT, such as self-efficacy, steps per day, and expectations regarding aging, are important when designing self-management interventions to prevent falls. [Journal of Gerontological Nursing, 50(8), 19-28.].
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Acidentes por Quedas , Autoeficácia , Autogestão , Humanos , Idoso , Acidentes por Quedas/prevenção & controle , Acidentes por Quedas/estatística & dados numéricos , Feminino , Masculino , Idoso de 80 Anos ou mais , AutocuidadoRESUMO
Production of new types of probiotics for animal nutrition mainly depends on the appropriate bacterial strain and efficient substrate. Therefore, this study aimed to evaluate the impact of two probiotic strains containing 1.2 × 108 (CFU/g), produced on permeate media on performance responses of Rahmani ewes. Thirty early lactating ewes (about 2-3 years old and weighting on average 43.2 ± 0.3 kg) were randomly divided into three groups of 10 animals each using a completely randomized design. The 1st group was fed the basal diet (60% concentrate feed mixture (CFM) + 30% Egyptian clover + 10% bean straw). While the ewes in 2nd and 3rd groups were fed the basal diet + 2 g of Enterococcus faecium NRC-3(EF) and Lactobacillus rhamnosus (LR), respectively for 9 weeks. Ewes' diet supplementation with EF or LR increased (p < 0.05) dry matter, organic matter, crude protein, neutral detergent fiber, acid detergent fiber, and non-structural carbohydrates digestibility compared to ewes of the control group. Glucose, total protein, and albumin concentrations significantly increased in the blood of EF ewes than those of LR and control. Probiotics increased ewes' milk yield as well as milk protein, fat, and lactose yields, but no differences were observed between treatments when milk components were expressed as percentage. Milk fatty acids profile not changed due to EF or LR supplementation. Probiotics (E. faecium and L. rhamnosus) produced on cheese industry waste (permeate) have proven their ability to improve the productive performance of the lactating Rahmani ewes.
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Enterococcus faecium , Lacticaseibacillus rhamnosus , Animais , Feminino , Ovinos , Lactação/fisiologia , Detergentes , Suplementos Nutricionais , Dieta/veterinária , Ração Animal/análiseRESUMO
ABSTRACT: Breast milk feeding is vital to the health outcomes of the breastfeeding dyad. Nurses have a significant role to promote, educate, and support breastfeeding practices for breastfeeding dyads in diverse settings. Nurses should also promote breastfeeding awareness to normalize breastfeeding as the optimal food for infants. This pilot study investigated the effects of a basic breastfeeding educational module on the breastfeeding attitudes of prelicensure nursing students. There was a statistically significant change in attitudes from pretest and posttest. Developing a comprehensive breastfeeding module is a significant step to standardize education and promote breastfeeding best practices.
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BACKGROUND: Many older adults with physical limitations living in residential care apartments are unable to exercise in a standing position and are at risk for declining in muscle function leading to falls and injury. Novel approaches to achieve exercise benefits are needed. The purpose of this study was to test the effect of semi-recumbent vibration exercise on muscle outcomes in older adults living in residential care apartment complexes (RCACs). METHODS: A randomized, crossover design was used to examine the effect of semi-recumbent vibration exercise on muscle function and mass among 32 RCAC residents (mean age 87.5 years) with physical limitations. Participants received a randomized sequence of two study conditions: sham or vibration for 8 weeks each separated by a 4-week washout. Before and after the 8 weeks of vibration treatment and sham treatment, muscle mechanography was used to assess muscle function including jump power, weight-corrected jump power, and jump height. Short physical performance battery (SPPB) and handgrip strength were also used to measure muscle function. Bioelectrical impedance spectroscopy was used to estimate skeletal muscle mass. The effect of the vibration treatment on muscle outcomes was analyzed through mixed effects linear regression models. RESULTS: Vibration exercise leads to better jump height (p < .05) compared to sham exercise but also poorer chair rise performance (p = 0.012). Other muscle functions tests and muscle mass parameters showed non-significant changes. CONCLUSION: This small pilot study showed no conclusive results on the effect of semi-recumbent vibration exercise on muscle function and mass in older adults living in RCAC. However, the promising signals of improved jump performance could be used to power larger studies of longer duration with various vibration doses to determine the benefit of vibration exercise in this physically impaired, high-risk population with few exercise capabilities. TRIAL REGISTRATION: The study is registered at clinicaltrials.gov ( NCT02533063 ; date of first registration 26/08/2015).
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Força da Mão , Vibração , Idoso , Idoso de 80 Anos ou mais , Exercício Físico , Força da Mão/fisiologia , Humanos , Força Muscular/fisiologia , Músculo Esquelético , Projetos Piloto , Vibração/uso terapêuticoRESUMO
BACKGROUND: Despite the known benefits of non-sedentary behavior, physical activity, and protein and caloric intake to health and muscle mass, strength, and function, many older adults do not meet physical activity and dietary recommendations. A better understanding of the factors associated with sedentary behavior, physical activity and dietary self-management behaviors, and muscle outcomes (muscle mass, strength, and function) is needed, particularly among continuing care retirement community residents. The objective of this study was to examine the factors associated with sedentary behavior, physical activity and dietary self-management behaviors, and muscle outcomes among continuing care retirement community residents. It also aimed to determine whether sedentary behavior and physical activity and dietary self-management behaviors mediate the relationships between self-efficacy, goal congruence, aging expectations, social support, and muscle outcomes. METHODS: A sample of 105 continuing care retirement community residents (age > 70 years) participated in this correlational, cross-sectional study. Questionnaires on pain, self-efficacy, goal congruence, aging expectation, social support, and daily protein and caloric intake were administered. Physical activity and sedentary behavior (ActiGraph wGT3X-BT), muscle mass (ImpediMed SFB7), muscle strength (Jamar Smart Digital Hand Dynamometer), and muscle function (Short Physical Performance Battery) were measured. Multiple regression, logistic regression, and mediation analyses were performed. RESULTS: Low goal congruence predicted engagement in sedentary behavior and light physical activity. Higher levels of self-efficacy and social support were associated with increased likelihoods of achieving greater moderate physical activity and meeting daily recommendations for caloric intake, respectively. Self-efficacy and goal congruence predicted muscle function and strength. Moreover, sedentary behavior and achieving greater moderate physical activity were found to partially but significantly mediate the relationship between self-efficacy and muscle function. CONCLUSION: Future research should evaluate whether attempts to reduce sedentary behavior and promote physical activity and dietary self-management behaviors and muscle outcomes are more successful when modifications to the self-management process factors are also targeted.
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Comportamento Sedentário , Autogestão , Idoso , Estudos Transversais , Exercício Físico , Humanos , Músculos , AposentadoriaRESUMO
OBJECTIVE: This study was conducted to describe and examine the impact of medication intervention practices among African-American clients in two nurse-led community nursing centers (CNCs). METHODS: This study used a retrospective-descriptive design. Omaha System data from visits of 196 African-American adults living with chronic disease and having two or more CNC visits in which medication regimen was an identified problem and the main reason for the visit was analyzed. RESULTS: The sample had a mean age of 53.1 (6.67) and was primarily women (82%), uninsured, and with high school or less education. A total of 9,259 Medication regimen interventions were documented and implemented during 1,146 client CNC visits. A paired samples t test revealed statistically significant improvements in Knowledge (t = 2.434, p < .01). Behavior (t = 0.077, p = .94) and Status (t = 1.489, p = .14) remained unchanged, although the ratings trended toward improvement for each. CONCLUSION: This study provides evidence that the nursing center model of care does improve the knowledge of medications among African-American clients. The study also demonstrated the Omaha System's utility to evaluate the impact of nursing interventions in community settings.
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Negro ou Afro-Americano , Enfermagem em Saúde Comunitária , Conhecimentos, Atitudes e Prática em Saúde , Preparações Farmacêuticas , Padrões de Prática em Enfermagem , Adulto , Negro ou Afro-Americano/educação , Negro ou Afro-Americano/estatística & dados numéricos , Enfermagem em Saúde Comunitária/organização & administração , Feminino , Conhecimentos, Atitudes e Prática em Saúde/etnologia , Humanos , Masculino , Pessoa de Meia-Idade , Modelos de Enfermagem , Pesquisa em Avaliação de Enfermagem , Estudos RetrospectivosRESUMO
Declined food intake is prevalent among long-term care (LTC) residents with dementia and associated with deleterious health outcomes. This study explores food intake, nutritional status, and function and its associated factors in LTC residents with dementia. Data from 82 LTC residents with dementia were used in this secondary analysis. The majority of residents were either malnourished or at risk of being malnourished and demonstrated a worse appetite than previously described in the literature. Comorbid illness, depressed mood, and appetite were associated with 37.1% of the variance in food intake over 30 days. Dementia level and appetite were associated with 22.2% of the variance in nutritional status. Food intake and nutritional status were associated with 29.1% of the variance in function. This study also highlights a new demographic that may require extra assistance in combating declined food intake: LTC residents with dementia who reside in a facility that follows restrictive food practices such as a kosher diet. The potential reversibility of factors associated with food intake and nutritional status provides opportunities for intervention.
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Atividades Cotidianas , Demência/complicações , Ingestão de Energia , Desnutrição/complicações , Estado Nutricional , Idoso de 80 Anos ou mais , Comorbidade , Feminino , Humanos , Masculino , Casas de SaúdeRESUMO
BACKGROUND: One of the loop diuretics, furosemide, was found useful in bronchial asthma. It enhanced anti-asthmatic effects of albuterol. The underlying mechanism is still unclear. OBJECTIVE: This study was planned to investigate whether the enhancing effect of furosemide for albuterol in ovalbumin-induced asthmatic BALB/c mice is diuretic-related or not. METHODS: Two sets of experiments were performed. In the first, effects of inhaled subdiuretic doses of furosemide and bumetanide (another loop diuretic) were compared. Treatments (mg/mL) were given as 15 minute-inhalation before final ovalbumin provocation as follows: albuterol (2.5), furosemide (0.08), bumetanide (0.005), (albuterol+furosemide, 2.5+0.08), and (albuterol+bumetanide, 2.5+0.005). Airway hyperreactivity (AHR) to inhaled methacholine, levels of IL-6, TNF-α, and differential white blood cells in bronchoalveolar lavage fluid (BALF), and lung histopathology were evaluated. In the second set, effects of oral diuretic doses (mg/kg) of furosemide (10) and bumetanide (0.25) were given before final ovalbumin provocation. Urine volume and asthma parameters were measured. RESULTS: Ovalbumin-asthmatic mice showed significant increases in AHR, levels of IL-6, TNF-α, and inflammatory cells in BALF, and lung inflammatory cell infiltration. Inhaled furosemide significantly decreased these changes while inhaled bumetanide failed. Albuterol and albuterol+bumetanide significantly decreased these changes more than furosemide while albuterol+furosemide produced the most significant decreases. Both oral furosemide and bumetanide exerted equivalent diuretic effects but failed to improve asthma. CONCLUSIONS: Inhaled subdiuretic dose of furosemide enhanced effects of albuterol more in ovalbumin-asthmatic mice rather than bumetanide, while oral diuretic doses of both drugs failed to improve asthma, indicating that this enhancing effect is not diuretic-related.
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Albuterol/uso terapêutico , Asma/tratamento farmacológico , Bumetanida/uso terapêutico , Diuréticos/uso terapêutico , Furosemida/uso terapêutico , Pulmão/patologia , Alérgenos/imunologia , Animais , Modelos Animais de Doenças , Sinergismo Farmacológico , Quimioterapia Combinada , Feminino , Humanos , Interleucina-6/metabolismo , Camundongos , Camundongos Endogâmicos BALB C , Ovalbumina/imunologia , Fator de Necrose Tumoral alfa/metabolismoRESUMO
Chronic administration of L-methionine leads to memory impairment, which is attributed to increase in the level of oxidative stress in the brain. On the other hand, metformin is a commonly used antidiabetic drug with strong antioxidant properties. In the current study, we tested if chronic metformin administration prevents memory impairment induced by administration of L-methionine. In addition, a number of molecules related to the action of metformin on cognitive functions were examined. Both metformin and L-methionine were administered to animals by oral gavage. Testing of spatial learning and memory was carried out using radial arm water maze (RAWM). Additionally, hippocampal levels or activities of catalase, thiobarbituric acid reactive substances (TBARs), glutathione peroxidase (GPx), glutathione (GSH), oxidized glutathione (GSSG) and GSH/GSSG ratio were determined. Results showed that chronic L-methionine administration resulted in both short- and long- term memory impairment, whereas metformin treatment prevented such effect. Additionally, L-methionine treatment induced significant elevation in GSSG and TBARs, along with reduction in GSH/GSSG ratio and activities of catalase, and GPx. These effects were shown to be restored by metformin treatment. In conclusion, L-methionine induced memory impairment, and treatment with metformin prevented this impairment probably by normalizing oxidative stress in the hippocampus.
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Myocarditis and acute myocardial infarction (AMI) have been reported after COVID-19 messenger ribonucleic acid vaccination. Nearly all reported patients with myocarditis or AMI after COVID-19 vaccination have survived and become asymptomatic. Described herein is a previously healthy man who developed severe heart decompensation shortly after receiving a COVID-19 vaccination and died approximately 40 hours later. An autopsy disclosed massive AMI.
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COVID-19 , Infarto do Miocárdio , Miocardite , Masculino , Humanos , Vacinas contra COVID-19 , Vasos CoronáriosRESUMO
Background: There is limited evidence on the association between psychological distress, academic stress, and burnout among Saudi nursing students. Clarifying such an association is crucial to understanding the factors associated with psychological distress and developing interventions to prevent it. Aim: To explore the prevalence and association of psychological distress with academic stress and burnout among Saudi nursing students. Methods: A cross-sectional design was used, and 237 students participated from a nursing college in Riyadh, Saudi Arabia. Students' demographics; the Depression, Anxiety, and Stress Scale; the Academic Stress Inventory; and the Maslach Burnout Inventory were used for data collection. Results: Most of the participants reported no-to-mild depression, anxiety, and stress. Stress related to studying in groups, time management, emotional exhaustion, depersonalization, and personal accomplishment were the significant predictors of psychological distress, explaining 52.1% of the variance. Conclusions: This study suggest implementing tailored mental health screenings and support services for nursing students, embedding mental health professionals in the program, and using telehealth or mobile apps for remote monitoring to ensure comprehensive care for nursing students. Future research should consider these predictors while designing strategies to decrease psychological distress among students.
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BACKGROUND: The emergence of artificial intelligence (AI) has significantly influenced the diagnostic evaluation of stroke and has revolutionized acute stroke care delivery. The scientific evidence evaluating the role of AI, especially in areas of stroke treatment and rehabilitation is limited but continues to accumulate. We performed a systemic review of current scientific evidence evaluating the use of AI in stroke evaluation and care and examined the publication trends during the past decade. METHODS: A systematic search of electronic databases was conducted to identify all studies published from 2012 to 2022 that incorporated AI in any aspect of stroke care. Studies not directly relevant to stroke care in the context of AI and duplicate studies were excluded. The level of evidence and publication trends were examined. RESULTS: A total of 623 studies were examined, including 101 reviews (16.2%), 9 meta-analyses (1.4%), 140 original articles on AI methodology (22.5%), 2 case reports (0.3%), 2 case series (0.3%), 31 case-control studies (5%), 277 cohort studies (44.5%), 16 cross-sectional studies (2.6%), and 45 experimental studies (7.2%). The highest published area of AI in stroke was diagnosis (44.1%) and the lowest was rehabilitation (12%). A 10-year trend analysis revealed a significant increase in AI literature in stroke care. CONCLUSIONS: Most research on AI is in the diagnostic area of stroke care, with a recent noteworthy trend of increased research focus on stroke treatment and rehabilitation.
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Inteligência Artificial , Acidente Vascular Cerebral , Humanos , Inteligência Artificial/tendências , Acidente Vascular Cerebral/terapia , Acidente Vascular Cerebral/diagnóstico , Reabilitação do Acidente Vascular Cerebral/tendênciasRESUMO
There are few studies addressing duodenal inflammation. This study was designed to investigate the effects of a recently developed biotechnological product, a nano-formulation of olmesartan medoxomil (OM) - olmesartan medoxomil zeinmersomes (OMZ) - for the treatment of indomethacin-induced duodenitis in rats. Adult male Wistar rats were given indomethacin (10 mg/kg/day) for four weeks. They were divided into a positive control group (PC, untreated) and two groups treated orally with 3 mg/kg per day of OM or OMZ for the last two weeks of the 4-week indomethacin-treatment. At end of the four weeks, blood and duodenum were collected. Duodenal homogenate was used for measurement of levels of myeloperoxidase, tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), malondialdehyde, reduced glutathione (GSH), and cleaved caspase-3. Duodenal sections were stained with H&E. Gene expressions of nuclear factor kappa B (NF-κB p65), Bcl-2-associated X protein (Bax), and B-cell lymphoma 2 (Bcl-2) by RT-PCR, and protein expression of survivin by western blot were assessed. Plasma and duodenal olmesartan concentrations were measured by high performance liquid chromatography mass spectrometry. The duodenitis rats showed significantly higher duodenal levels of myeloperoxidase, TNF-α, IL-6, malondialdehyde, and cleaved caspase-3, a significantly lower GSH level, and histopathological alterations. Moreover, they showed upregulated gene expressions of NF-κB p65 and Bax, downregulated gene expression of Bcl-2, decreased Bcl-2/Bax ratio, and lower protein expression of survivin. OMZ was more effective in protecting the duodenum from indomethacin-induced injuries compared to OM due to improved delivery, higher bioavailability, and better anti-inflammatory, antioxidant, and antiapoptotic effects. OMZ could be a better choice for hypertensive patients with non-steroidal anti-inflammatory drugs-induced duodenitis.
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Duodenite , NF-kappa B , Ratos , Masculino , Animais , Olmesartana Medoxomila , NF-kappa B/metabolismo , Ratos Wistar , Survivina , Peroxidase , Caspase 3 , Fator de Necrose Tumoral alfa/metabolismo , Indometacina , Interleucina-6 , Proteína X Associada a bcl-2 , Anti-Inflamatórios/uso terapêutico , Anti-Inflamatórios/farmacologia , Malondialdeído/metabolismoRESUMO
Despite the high prevalence of ageism worldwide, it is still underestimated and unrecognized by many nurses. Concept clarification is required to delineate the meaning of the word "ageism" in nursing. The purpose of this concept analysis is to clearly define the concept of ageism relative to nursing discipline using the Walker and Avant method. Defining the concept of ageism will provide nurses with a better understanding of its causes and consequences. It will aid policy makers in developing policies and interventions to help decrease ageism in health care environments.
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Etarismo , Cuidados de Enfermagem , Humanos , IdosoRESUMO
Described herein are 2 patients diagnosed clinically as "giant cell myocarditis." Both had short clinical courses (â¼ 2 months) before lifesaving orthotopic heart transplantation (OHT). Examination of the hearts disclosed multiple widespread yellow lesions in the ventricular walls. The short clinical courses in these 2 patients are quite different from cardiac sarcoidosis, which typically has courses lasting years. In contrast to cardiac sarcoidosis, the ventricular myocardial lesions were yellow in color not white as in cardiac sarcoidosis. In conclusion, we consider giant-cell myocarditis and cardiac sarcoidosis to be different conditions and not simply different stages of the same condition.
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Cardiomiopatias , Transplante de Coração , Miocardite , Sarcoidose , Humanos , Miocardite/diagnóstico , Miocardite/patologia , Cardiomiopatias/diagnóstico , Sarcoidose/diagnóstico , Sarcoidose/patologia , Ventrículos do Coração/patologia , Células Gigantes/patologiaRESUMO
Mycophenolate mofetil (MMOF) is a commonly used immunosuppressive prodrug in kidney transplant patients. However, it is not without side effects. The most common of these is diarrhea which inadvertently leads to colonoscopic and endoscopic evaluation when all other workup returns negative. Colonoscopies often show diffuse ulcers and colitis changes depending on the degree of diarrhea. In rare situations, MMOF-induced ischemic colitis may occur on gross endoscopy. We describe an unusual phenomenon of an adult male status post renal transplant with histopathologically diagnosed MMOF-induced colitis who developed gross endoscopic findings concerning ischemic colitis. Our case highlights the importance of recognizing that MMOF-induced colonic changes can rarely mimic ischemic colitis. With this in mind, we aim for gastroenterologists to better understand the varying endoscopic colonic findings of this immunosuppressive drug.
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BACKGROUND: Caring behavior is a major focus of the nursing profession and an important dimension of nursing practice that sets nurses apart from other healthcare professionals. Effective patient-centered care requires ensuring nurses have the emotional intelligence and happiness to address the daily demands of practice. The purpose of this study is to examine the emotional intelligence and happiness among nursing students and their relationship with caring behaviors. METHODS: A cross-sectional, descriptive correlational study was conducted on nursing students (n = 363) from Riyadh, Kingdom of Saudi Arabia, via an online survey. Measures include demographic data survey, Oxford Happiness Questionnaire, Trait Emotional Intelligence Questionnaire, and Caring Behaviors Inventory scale. Descriptive and multiple regression analyses were conducted for this study. RESULTS: Nursing students reported their highest degree of caring was in terms of 'respectful differences to others', while their lowest was in 'knowledge and skills'. Emotional intelligence and happiness were significant predictors of caring behaviors and explained the variance in assurance of human presence (17.5%), knowledge and skills (17.5%), respectful differences to others (18%), and positive connectedness (12.9%). In the final regression model, emotional intelligence and happiness were significant predictors of caring behaviors and explained 19.5% of the variance. CONCLUSIONS: Emotional intelligence and happiness among nursing students were found to be important factors to improve their caregiving behaviors. Therefore, nursing educators should consider integrating emotional intelligence and happiness interventions for students into their curriculum.
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The extent of the application of the Individual and Family Self-Management Theory (IFSMT) in research has yet to be determined. The purpose of this analysis was to review the use of the IFSMT in published research and evaluate posited constructs and relationships. Dimensions and categories of the IFSMT and the interrelationships were generally supported in the 77 articles reviewed. A majority focused on self-management of chronic conditions in the adult population. More research on the strength, direction, and interaction of relationships is needed. Defining and exploring social constructs, including race, ethnicity, and gender, should be prioritized in future IFSMT research.
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AIMS: To study the age at presentation and factors associated with adult-onset diabetes (≥ 20 years) among Arabs and Jews in Israel. METHODS: Participants (n = 1100) were randomly selected from the urban population of the Hadera District in Israel. The study sample was stratified into equal groups according to sex, ethnicity (Arabs and Jews) and age. Information on age at diabetes presentation, family history of diabetes, history of gestational diabetes, socio-demographic and lifestyle characteristics was obtained through personal interviews. Self reports of diabetes were compared with medical records and were found reliable (κ = 0.87). The risk for diabetes was calculated using Kaplan-Meier survival analysis. Factors associated with diabetes in both ethnic groups were studied using Cox proportional hazard model. RESULTS: The prevalence of adult-onset diabetes was 21% among Arabs and 12% among Jews. Arab participants were younger than Jews at diabetes presentation. By the age of 57 years, 25% of Arabs had diagnosed diabetes; the corresponding age among Jews was 68 years, a difference of 11 years (P < 0.001). The greater risk for diabetes among Arabs was independent of lifestyle factors, family history of diabetes and, among women, history of gestational diabetes; adjusted hazard ratio 1.70; 95% confidence interval 1.19-2.43. CONCLUSIONS: Arabs in Israel are at greater risk for adult-onset diabetes than Jews and are younger at diabetes presentation. Culturally sensitive interventions aimed at maintaining normal body weight and active lifestyle should be targeted at this population. Possible genetic factors and gene-environmental interactions underlying the high risk for diabetes among Arabs should be investigated.
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Árabes/estatística & dados numéricos , Diabetes Mellitus Tipo 2/epidemiologia , Judeus/estatística & dados numéricos , População Urbana/estatística & dados numéricos , Adulto , Idade de Início , Idoso , Índice de Massa Corporal , Estudos Transversais , Diabetes Mellitus Tipo 2/genética , Feminino , Seguimentos , Predisposição Genética para Doença , Humanos , Israel/epidemiologia , Estimativa de Kaplan-Meier , Estilo de Vida , Masculino , Pessoa de Meia-Idade , Prevalência , Modelos de Riscos Proporcionais , Medição de Risco , Fatores de RiscoRESUMO
Roflumilast, a highly selective oral phosphodiesterase IV inhibitor, exerts anti-inflammatory and anti-fibrotic effects. Oral roflumilast causes gastrointestinal side effects, especially vomiting, which could be reduced by administering roflumilast via off-label routes. Inhaled roflumilast reportedly improved inflammatory and histopathological changes in asthmatic mice. The current study investigated the effects of oral and rectal roflumilast on trinitrobenzenesulfonic acid (TNBS)-induced chronic colitis in rats, an experimental model resembling human Crohn's disease. Five groups of rats (n=8) were used: normal control, TNBS-induced colitis, and three TNBS-treated colitic groups, which received oral sulfasalazine (500 mg·kg-1·day-1), oral roflumilast (5 mg·kg-1·day-1), or rectal roflumilast (5 mg·kg-1·day-1) for 15 days after colitis induction. Then, the following were assessed: the colitis activity score, tumor necrosis factor (TNF)-α, interleukin (IL)-2, and IL-6 serum levels, colonic length, and myeloperoxidase, malonaldehyde, and glutathione levels. Histological examinations employed H&E, Masson trichrome, and PAS stains in addition to immunostaining for KI-67 and TNF-α. The TNBS-induced colitis rats showed significant increases in disease activity scores, serum TNF-α, IL-2, and IL-6 levels, and colonic myeloperoxidase and malonaldehyde content. They also showed significant decreases in colonic length and glutathione levels in addition to histopathological and immunohistochemical changes. All the treatments significantly improved all these changes. Sulfasalazine provided the greatest improvement, followed by oral roflumilast, and then rectal roflumilast. In conclusion, both oral and rectal roflumilast partially improved TNBS-induced chronic colitis, suggesting the potential of roflumilast as an additional treatment for Crohn's disease.