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1.
Yale J Biol Med ; 97(2): 165-177, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38947108

RESUMO

Background: Chronic rhinosinusitis (CRS) is an inflammatory condition classified into chronic rhinosinusitis with nasal polyps (CRSwNP) and chronic rhinosinusitis without nasal polyps (CRSsNP). Th cells manage inflammatory cells in CRS. Suppressor of Cytokine Signaling (SOCS) proteins regulate Janus kinase (JAK)-signal transducer and activator of transcription (STAT) pathway in Th cells by polarizing toward Th1, Th2, and Th17 cells. This study evaluated the levels of SOCS1,3,5 in CRS patients to find associations with Th cells. Methods: In this cross-sectional study, 20 CRSwNP patients, 12 CRSsNP patients, and 12 controls participated. The infiltration of CD4+ T cells was determined using immunohistochemistry. The expression of specific transcription factors and SOCS proteins was assessed using real-time PCR. Cytokine levels were evaluated using ELISA. SOCS protein levels were investigated using western blot analysis. Results: The expression of SOCS3 increased in the CRSwNP group compared to CRSsNP and control groups (p <0.001). SOCS3 protein levels increased in the CRSwNP group compared to CRSsNP (p <0.05) and control (p <0.001) groups. Although there was a significant difference in SOCS5 expression between CRSsNP and control groups, SOCS5 protein levels were significantly different between CRSsNP and control (p <0.001) and CRSwNP (p <0.05) groups. Conclusions: Targeted therapies may be suggested for CRS by modulating SOCS3 and SOCS5 proteins that are responsible for polarization of Th cells toward Th2 or Th1 cells, respectively. JAK-STAT pathway targeting, which encompasses numerous cells, can be limited to SOCS proteins to more effectively orchestrate Th cell differentiation.


Assuntos
Rinite , Sinusite , Proteína 3 Supressora da Sinalização de Citocinas , Proteínas Supressoras da Sinalização de Citocina , Humanos , Sinusite/metabolismo , Sinusite/imunologia , Proteínas Supressoras da Sinalização de Citocina/metabolismo , Doença Crônica , Masculino , Proteína 3 Supressora da Sinalização de Citocinas/metabolismo , Rinite/metabolismo , Rinite/imunologia , Feminino , Adulto , Pessoa de Meia-Idade , Linfócitos T Auxiliares-Indutores/metabolismo , Linfócitos T Auxiliares-Indutores/imunologia , Estudos Transversais , Pólipos Nasais/metabolismo , Citocinas/metabolismo , Proteína 1 Supressora da Sinalização de Citocina/metabolismo , Proteína 1 Supressora da Sinalização de Citocina/genética , Transdução de Sinais , Rinossinusite
2.
J Biomater Sci Polym Ed ; : 1-29, 2024 Jun 16.
Artigo em Inglês | MEDLINE | ID: mdl-38879811

RESUMO

This study explores the corrosion resistance and antibacterial properties of a PTFE + TiO2/Ag coating applied to 316 L stainless steel. To enhance adhesion, a polydopamine interlayer was chemically deposited onto the steel surface. The PTFE + TiO2 coating was subsequently applied through immersion, followed by the deposition of silver nanoparticles using a chemical method. Optimization of the polydopamine interlayer involved varying temperature, time, stirring speed, and drying parameters. The optimal conditions for the polydopamine interlayer were determined to be 60 °C for 1 h, 300 rpm stirring, and 24-h drying in a freeze dryer. Analytical results demonstrated that both the PTFE + TiO2 and PTFE/PTFE + TiO2/Ag coatings exhibited exceptional corrosion resistance, with corrosion currents of 3.3 × 10-5 and 3.2 × 10-4 µA/cm2, respectively. Antibacterial assessments showcased the remarkable ability of the PTFE/PTFE + TiO2/Ag coating, containing 5% silver content, to effectively inhibit bacterial penetration within a 6.5 mm radius. Furthermore, this coating displayed a water contact angle of 143°, classifying it as a hydrophobic coating. The photocatalytic efficiency (Rs) was determined to be 3.18 × 10-3 A/W, a performance level comparable to that of a standard UV sensor. These findings underscore the substantial enhancements in corrosion resistance, antibacterial performance, and hydrophobic characteristics achieved with the PTFE + TiO2/Ag coating, particularly through the novel optimization of the polydopamine interlayer. This coating exhibits great promise for multifunctional protective applications in diverse fields, particularly demonstrating its suitability for implants and bio-coatings.

3.
Mar Pollut Bull ; 203: 116491, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38754321

RESUMO

Endosymbionts (Symbiodiniaceae) play a vital role in the health of corals. Seawater pollution can harm these endosymbionts and dispersants used during oil spill cleanup can be extremely toxic to these organisms. Here, we examined the impact of oil and a specific dispersant, Corexit-9500, on two representative endosymbionts - Symbiodinium and Cladocopium - from the Southwestern endemic coral Mussismilia braziliensis. The survival and photosynthetic potential of the endosymbionts decreased dramatically after exposure to the dispersant and oil by ~25 % after 2 h and ~50 % after 7 days. Low concentrations of dispersant (0.005 ml/l) and dispersed oil (Polycyclic Aromatic Hydrocarbons, 1132 µg/l; Total Petroleum Hydrocarbons, 595 µg/l) proved highly toxic to both Symbiodinium and Cladocopium. These levels triggered a reduction in growth rate, cell size, and cell wall thickness. After a few hours of exposure, cellular organelles were damaged or destroyed. These acute toxic effects underline the fragile nature of coral endosymbionts.


Assuntos
Antozoários , Dinoflagellida , Poluição por Petróleo , Petróleo , Simbiose , Poluentes Químicos da Água , Antozoários/efeitos dos fármacos , Antozoários/fisiologia , Animais , Petróleo/toxicidade , Dinoflagellida/fisiologia , Dinoflagellida/efeitos dos fármacos , Poluentes Químicos da Água/toxicidade , Lipídeos , Tensoativos/toxicidade
4.
Front Psychiatry ; 15: 1337317, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38699447

RESUMO

Background: Perceived social support (PSS) plays a considerable role in mental health. The Multidimensional Scale of Perceived Social Support (MSPSS) is one of the most widely used scales, leading to much research evidence. The present study investigated its measurement model, equivalence across gender (male and female) and age groups (older patients= above 60 and non-older patients= below 60), and concurrent validity. Methods: A cross-sectional survey was conducted between March and October 2020, on patients hospitalized due to COVID-19 in Tehran, Iran. The scales were administered to 328 COVID-19 patients (54.6% male, aged 21 to 92) from two general hospitals; participants completed MSPSS (including friends, family, and significant others subscales), Pittsburgh Sleep Quality Index (PSQI, include sleep latency, subjective sleep quality, habitual sleep efficiency, sleep duration, use of sleep medication, daytime dysfunction, and sleep disturbances subscales), and the Perceived Stress Scale-10 (PSS-10, to assess patients' appraisal of stressful conditions). Results: The MSPSS three-factor structure was confirmed among COVID-19 patients by Confirmatory Factor Analysis (CFA). The results support the MSPSS internal consistency and configural, metric, and scalar invariance across gender and age groups. Nevertheless, small but significant differences were found across ages based on the latent factor mean of the MSPSS from friends, with a lower mean level in older patients. The coefficients of Cronbach's alpha (ranging from.92 to.96), the ordinal theta (ranging from.95 to.98), and Omega (ranging from.93 to.97) suggested high internal consistency of MSPSS. The concurrent validity of MSPSS was evidenced by its significant negative correlation with PSS-10 (τb = -.13, p <.01) and also subjective sleep quality (τb = -.22, p <.01), sleep disturbances (τb = -.26, p <.001), and daytime dysfunction (τb = -.26, p <.001). Conclusions: The MSPSS was valid and reliable for measuring individuals' perception of social support between males and females and older and non-older COVID-19 patients.

5.
Proc Inst Mech Eng H ; : 9544119241242968, 2024 Apr 09.
Artigo em Inglês | MEDLINE | ID: mdl-38591839

RESUMO

This study investigated the effect of anterior cruciate ligament (ACL) injury on relative acceleration of the tibia and femur during a number of tests/activities, in order to assess the feasibility of acceleration-based diagnosis of ACL injury using inertial sensors. First, a detailed finite element model of the knee joint was developed to simulate the target tests/activities, and identify those in which a large difference between the maximum acceleration peaks (MAPs) of the healthy and ACL injured knees is likely to be observed. The promising tests/activities were entered in an experimental study, where the relative accelerations of the tibiae and femurs of 20 individuals with unilateral ACL injury, allocated randomly to two groups of conscious and unconscious test conditions, were recorded. Model predictions indicated MAP ratios>1.5 for the ACL-injured to healthy knees, during the anterior drawer, Lachman, and pivot-shift tests, as well as the lunge activity. The experimental MAP results indicated acceptable test-retest reliabilities for all tests (coefficient of variation<0.25), and significant MAP differences (p < 0.05) in the anterior drawer and pivot-shift tests, in both coconscious and unconscious conditions. The individualized MAP results indicated side-to-side differences>2 m/s2 for all subjects during unconscious pivot shift tests, and >0.5 m/s2 for eight cases out of ten during conscious anterior drawer tests. It was concluded that the pivot shift test had a great repeatability and discriminative ability for acceleration-based diagnosis of ACL injury in unconscious condition. For the conscious condition, however, the anterior drawer test was appeared to be most promising.

6.
Sci Rep ; 14(1): 2748, 2024 02 02.
Artigo em Inglês | MEDLINE | ID: mdl-38302524

RESUMO

Simulation studies, such as finite element (FE) modeling, provide insight into knee joint mechanics without patient involvement. Generic FE models mimic the biomechanical behavior of the tissue, but overlook variations in geometry, loading, and material properties of a population. Conversely, subject-specific models include these factors, resulting in enhanced predictive precision, but are laborious and time intensive. The present study aimed to enhance subject-specific knee joint FE modeling by incorporating a semi-automated segmentation algorithm using a 3D Swin UNETR for an initial segmentation of the femur and tibia, followed by a statistical shape model (SSM) adjustment to improve surface roughness and continuity. For comparison, a manual FE model was developed through manual segmentation (i.e., the de-facto standard approach). Both FE models were subjected to gait loading and the predicted mechanical response was compared. The semi-automated segmentation achieved a Dice similarity coefficient (DSC) of over 98% for both the femur and tibia. Hausdorff distance (mm) between the semi-automated and manual segmentation was 1.4 mm. The mechanical results (max principal stress and strain, fluid pressure, fibril strain, and contact area) showed no significant differences between the manual and semi-automated FE models, indicating the effectiveness of the proposed semi-automated segmentation in creating accurate knee joint FE models. We have made our semi-automated models publicly accessible to support and facilitate biomechanical modeling and medical image segmentation efforts ( https://data.mendeley.com/datasets/k5hdc9cz7w/1 ).


Assuntos
Cartilagem Articular , Humanos , Cartilagem Articular/diagnóstico por imagem , Articulação do Joelho/diagnóstico por imagem , Joelho , Tíbia/diagnóstico por imagem , Fêmur/diagnóstico por imagem , Imageamento por Ressonância Magnética/métodos
7.
J Mech Behav Biomed Mater ; 150: 106315, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38100981

RESUMO

Nanocomposite coatings based on polydimethylsiloxane were developed by adding silver phosphate and titania nanoparticles with a PDMS pre-layer for 316L stainless steel. FTIR spectra and XRD patterns confirmed the synthesis of TiO2 and Ag3PO4 nanoparticles and nanocomposite coating. FESM and AFM images show that with the increase of Ag3PO4 nanoparticles, the roughness of coatings increased (Ra and Rq for adding 7 wt% of Ag3PO4 coating was 29 and 293 nm). The wettability results demonstrated that the presence of 7 wt% Ag3PO4 nanoparticles in the coating has the highest water contact angle (152 °). Nano-scratch results proved that creating a pre-layer of PDMS can increase the scratch resistance of PDMS + TiO2+Ag3PO4 nanocomposite coating (displacement and scratch coefficient were 408 nm and 0.07µΝ-1/2 with the pre-layer). Corrosion current density of 316lSS with PDMS + TiO2+Ag3PO4 coating was 0.00045 µA/cm2, while for 316LSS with pure PDMS coating was 0.00114 µA/cm2 at 37 °C in PBS solution. The Nyquist curves showed the diameter of the semicircle for the nanocomposite coating was larger than pure PDMS coating, which indicates the higher corrosion resistance of the nanocomposite coating (5.98 × 107 Ω). By increasing Ag3PO4 nanoparticles from 1 to 7 wt%, the number of E. coli bacteria in contact with the nanocomposite decreased significantly from 580000 to 31000 CFU/cm2. In the disk diffusion test, the largest inhibition zone was related to the nanocomposite coating with the addition of 7 wt% Ag3PO4 (23 mm). Therefore, the PDMS + TiO2+Ag3PO4 nanocomposite coating has improved properties such as superhydrophobicity, advanced mechanical behavior, bio-corrosion resistance, and antibacterial activity.


Assuntos
Materiais Revestidos Biocompatíveis , Nanocompostos , Materiais Revestidos Biocompatíveis/farmacologia , Materiais Revestidos Biocompatíveis/química , Corrosão , Escherichia coli , Nanocompostos/química , Antibacterianos/farmacologia
8.
Life Sci ; 328: 121907, 2023 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-37394094

RESUMO

BACKGROUND: The SARS-CoV-2 virus has spread continuously worldwide, characterized by various clinical symptoms. The immune system responds to SARS-CoV-2 infection by producing Abs and secreting cytokines. Recently, numerous studies have highlighted that immunogenetic factors perform a putative role in COVID-19 pathogenesis and implicate vaccination effectiveness. AIM: This review summarizes the relevant articles and evaluates the significance of mutation and polymorphism in immune-related genes regarding susceptibility, severity, mortality, and vaccination effectiveness of COVID-19. Furthermore, the correlation between host immunogenetic and SARS-CoV-2 reinfection is discussed. METHOD: A comprehensive search was conducted to identify relevant articles using five databases until January 2023, which resulted in 105 total articles. KEY FINDINGS: Taken to gather this review summarized that: (a) there is a plausible correlation between immune-related genes and COVID-19 outcomes, (b) the HLAs, cytokines, chemokines, and other immune-related genes expression profiles can be a prognostic factor in COVID-19-infected patients, and (c) polymorphisms in immune-related genes have been associated with the effectiveness of vaccination. SIGNIFICANCE: Regarding the importance of mutation and polymorphisms in immune-related genes in COVID-19 outcomes, modulating candidate genes is expected to help clinical decisions, patient outcomes management, and innovative therapeutic approach development. In addition, the manipulation of host immunogenetics is hypothesized to induce more robust cellular and humoral immune responses, effectively increase the efficacy of vaccines, and subsequently reduce the incidence rates of reinfection-associated COVID-19.


Assuntos
COVID-19 , Humanos , COVID-19/genética , SARS-CoV-2 , Eficácia de Vacinas , Imunogenética , Reinfecção , Citocinas/genética
9.
Sci Total Environ ; 891: 164465, 2023 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-37247740

RESUMO

Microbes play a central role in coral reef health. However, the relative importance of physical-chemical and biological processes in the control of microbial biomass are unknown. Here, we applied machine learning to analyze a large dataset of biological, physical, and chemical parameters (N = 665 coral reef seawater samples) to understand the factors that modulate microbial abundance in the water of Abrolhos reefs, the largest and richest coral reefs of the Southwest Atlantic. Random Forest (RF) and Boosted Regression Tree (BRT) models indicated that hydrodynamic forcing, Dissolved Organic Carbon (DOC), and Total Nitrogen (TN) were the most important predictors of microbial abundance. The possible cumulative effects of higher temperatures, longer seawater residence time, higher nutrient concentration, and lower coral and fish biomass observed in coastal reefs resulted in higher microbial abundance, potentially impacting coral resilience against stressors.


Assuntos
Antozoários , Recifes de Corais , Animais , Biomassa , Temperatura Alta , Aprendizado de Máquina
10.
Cell Mol Biol Lett ; 28(1): 37, 2023 May 09.
Artigo em Inglês | MEDLINE | ID: mdl-37161350

RESUMO

Metabolic reprogramming is a well-known feature of cancer that allows malignant cells to alter metabolic reactions and nutrient uptake, thereby promoting tumor growth and spread. It has been discovered that noncoding RNAs (ncRNAs), including microRNA (miRNA), long noncoding RNA (lncRNA), and circular RNA (circRNA), have a role in a variety of biological functions, control physiologic and developmental processes, and even influence disease. They have been recognized in numerous cancer types as tumor suppressors and oncogenic agents. The role of ncRNAs in the metabolic reprogramming of cancer cells has recently been noticed. We examine this subject, with an emphasis on the metabolism of glucose, lipids, and amino acids, and highlight the therapeutic use of targeting ncRNAs in cancer treatment.


Assuntos
MicroRNAs , Neoplasias , RNA Longo não Codificante , RNA não Traduzido/genética , RNA Longo não Codificante/genética , Transporte Biológico , MicroRNAs/genética , Glucose , RNA Circular , Neoplasias/genética
11.
Front Psychiatry ; 14: 1162729, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37077275

RESUMO

Introduction: Various transdiagnostic factors have been associated with insomnia severity. The current study aimed to predict insomnia severity based on a group of transdiagnostic factors including neuroticism, emotion regulation, perfectionism, psychological inflexibility, anxiety sensitivity, and repetitive negative thinking after controlling for depression/anxiety symptoms and demographic characteristics. Methods: Two hundred patients with chronic insomnia disorder were recruited from a sleep disorder clinic. Participants completed the Insomnia Severity Index (ISI), Clinical Perfectionism Questionnaire (CPQ), Acceptance and Action Questionnaire-II (AAQ-II), Anxiety Sensitivity Index-3 (ASI-3), Repetitive Thinking Questionnaire (RTQ-10), Big Five Inventory (BFI-10), Emotion Regulation Questionnaire (ERQ), and Depression Anxiety Stress Scale (DASS-21). Results: After controlling for the confounding variables (depression/anxiety symptoms and demographic characteristics), hierarchical multiple linear regression suggested the significant association of neuroticism (BFI), cognitive reappraisal (ERQ), personal standards (CPQ), evaluative concerns (CPQ), physical concerns (ASI), cognitive concerns (ASI), and repetitive negative thinking (RTQ) with insomnia severity. Discussion: The findings support the role of transdiagnostic factors, especially physical concerns, repetitive negative thinking, and neuroticism in chronic insomnia. Future research using longitudinal designs is required to verify the causal status of transdiagnostic variables.

12.
Steroids ; 191: 109170, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36587779

RESUMO

In this research, a new magnetic nanocomposite Fe3O4@Saponin/Cu(II) based on quillaja saponin was prepared and the catalyst structure was characterized thoroughly using FT-IR, EDS, TGA, XRD, VSM, HR-TEM, SEM, ICP, BET analyzes. The catalyst prepared in the three-component synthesis of several Betti bases, 1-(α-aminoalkyl)naphthols, under environmentally friendly conditions was used. The advantage of this reaction is the high efficiency of the products and the short reaction time. Furthermore, Fe3O4@Saponin/Cu(II) nano-catalyst is recoverable magnetically and is reusable for other processes with no reduction in its activity.


Assuntos
Nanopartículas Magnéticas de Óxido de Ferro , Nanocompostos , Naftóis , Saponinas , Catálise , Nanocompostos/química , Naftóis/síntese química , Saponinas/química , Espectroscopia de Infravermelho com Transformada de Fourier , Nanopartículas Magnéticas de Óxido de Ferro/química
13.
Middle East J Dig Dis ; 15(4): 277-284, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-38523884

RESUMO

Background: We aimed to compare the effectiveness of mindfulness-based stress reduction and compassion-focused on the cognitive regulation of emotion in patients with irritable bowel syndrome (IBS). The research method was the semi-experimental type, with pre-test, post-test, follow-up, and experimental and control groups. Methods: The population included patients with IBS in Isfahan city; 45 of them were selected by convenience sampling method and randomly assigned to 3 groups (15 in each group). Then, the patients of one experimental group received eight sessions of 90 minutes of a mindfulness-based stress reduction program, while the other experimental group received eight sessions of 90 minutes of compassion-focused therapy. The measurement tools included the Cognitive Emotion Regulation Questionnaire (Garnefski and Kraaij, 2002) and a short clinical interview. Research data were analyzed using variance analysis with repeated measures on one factor (mixed design). Results: Both intervention methods were equally effective in changing the cognitive regulation of adaptive emotion mean scores (P<0.01), but the effect of compassion-focused therapy on improving the mean scores of cognitive regulation of adaptive emotion was more than mindfulness-based stress reduction therapy (P<0.05). Conclusion: It was concluded that both intervention methods can be used as complementary treatment for patients with IBS.

14.
EXCLI J ; 21: 1184-1195, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36381642

RESUMO

Inflammation has been well recognized to play an important role in developing coronary artery disease (CAD). By regulating essential genes in this pathway post-transcriptionally, MicroRNAs (miRNAs) may help or hinder the development of atherosclerotic lesions. The aim of this study was to investigate the expression of miR-24-3p, miR-595, CCL3, CCL4, IL-1ß, TNFαIP3, and NF-κBIα in the peripheral blood mononuclear cells (PBMCs) of CAD and control groups and to examine whether any correlation exists between the expression of miRs and genes in CAD group. A total of 168 subjects (84 CAD subjects and 84 control subjects) were examined in this research. Expression levels of miR-24-3p, miR-595, CCL3, CCL4, IL-1ß, TNFαIP3, and NF-κBIα in PBMCs were measured using the real-time PCR technique. A comparison of the CAD group with the control group indicated significantly increased expression levels of CCL3, CCL4, and IL-1ß (Fold Change (FC)=4, P=0.009; FC=2.9, P=0.01; FC=1.8, P=0.019, respectively) and remarkably reduced expression levels of TNFαIP3 and NF-κBIα (FC=-1.4, P=0.03 and FC=-5.9, P=0.001, respectively). Moreover, the expression levels of miR-24-3p downregulated (FC=-2.5, P=0.005) and miR-595 upregulated (FC=1.9, P=0.009) in the CAD group. There was a statistical correlation between the number of clogged arteries with expression levels of miR-24-3p, miR-595, CCL3, CCL4, IL-1ß, TNFαIP3, and NF-κBIα in the CAD group. Also, there was a statistical correlation between expression levels of miR-24-3p and miR-595 with CCL3, CCL4, IL-1ß, TNFαIP3, and NF-κBIα gene expression in the CAD group. In CAD patients, decreased expression of miR-24-3p and increased expression of miR-595 may aid the progression of atherosclerotic plaques by regulating CCL3, CCL4, IL-1ß, TNFαIP3, and NF-κBIα gene expression.

15.
Tuberc Res Treat ; 2022: 8039046, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36398041

RESUMO

Tuberculosis is still one of the most severe progressive diseases; it severely limits the social and economic development of many countries. In the present study, the topic trend of scientific publications on tuberculosis has been examined using text mining techniques and co-word analysis with an analytical approach. The statistical population of the study is all global publications related to tuberculosis. In order to extract the data, the Scopus citation database was used for the period 1900 to 2022. The main keywords for the search strategy were chosen through consultation with thematic specialists and using MESH. Python programming language and VOSviewer software were applied to analyze data. The results showed four main topics as follows: "Clinical symptoms" (41.8%), "Diagnosis and treatment" (28.1%), "Bacterial structure, pathogenicity and genetics" (22.3%), and "Prevention" (7.84%). The results of this study can be helpful in the decision of this organization and knowledge of the process of studies on tuberculosis and investment and development of programs and guidelines against this disease.

16.
AMB Express ; 12(1): 113, 2022 Sep 03.
Artigo em Inglês | MEDLINE | ID: mdl-36057049

RESUMO

Helicobacter pylori (H. pylori)-induced gastric inflammation in the gastric mucosa and significantly increases the risk of developing gastritis and peptic ulcer disease (PUD). The objective of this research is to determine the role of tumor necrosis factor-α (TNF-α) expression in the gastric mucosa of patients with H. pylori-associated gastritis and PUD compared to uninfected patients, and we determined the relation between TNF-α expression and Th1/Th17/Th22, and Treg cells. Fifty-five patients with H. pylori-associated gastritis, 47 patients with H. pylori-associated PUD, and 48 uninfected patients were in this research. Antrum biopsy was used to detect H. pylori, virulence factors and histopathological assessments. Expression of TNF-α in the infected group was significantly higher than the uninfected group. Also, cagA/oipA-positive infected patients induce significantly more TNF-α expression than do cagA/oipA-negative infected patients. Expression of TNF-α was significantly increased in the PUD group than the gastritis group. Notably, TNF-α expression had a significant positive correlation with the frequency of Th1/Th17/Th22 lymphocytes in the PUD group. These findings indicate the importance of increasing TNF-α with Th1, Th17, Th22 responses increase as an important risk factor for PUD in context of H. pylori infection.

17.
Int Arch Allergy Immunol ; 183(10): 1137-1145, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35878588

RESUMO

INTRODUCTION: Atherosclerosis is a chronic inflammatory process maintained during all stages of the disease by several proinflammatory mediators, such as cytokines and chemokines. Interleukin (IL)-36 cytokines are proinflammatory and have an essential role in innate and adaptive immunity, but the role of IL-36 has not been determined in coronary artery disease (CAD). This study aimed to measure the serum levels of IL-36 in patients with CAD and their association with the serum levels of tumor necrosis factor (TNF)-α, IL-6, and IL-32 and also investigate their correlation with the serum levels of malondialdehyde (MDA) and ferric reducing antioxidant power (FRAP). METHODS: A total of 168 subjects (84 CAD and 84 control subjects) were examined in this research. The total serum levels of IL-36 were measured using the enzyme-linked immunosorbent assay (ELISA). Also, some oxidative stress parameters were evaluated by FRAP and MDA assays in the serum. RESULTS: The serum levels of IL-36 and MDA were significantly higher, and FRAP was significantly lower in the CAD group compared to the controls. Furthermore, the serum levels of IL-36, MDA, and FRAP significantly correlated with the CAD group's cardiac arterial stenosis. Also, the serum levels of IL-36 had a positive and significant correlation with the serum levels of TNF-α, IL-6, IL-32, and biochemical parameters in the CAD group. CONCLUSION: Higher serum levels of IL-36 and its association with the serum levels of TNF-α, IL-32, and IL-6 may play a key role in the pathogenesis of CAD, leading to an increased risk of clogged arteries and oxidative stress.


Assuntos
Doença da Artéria Coronariana , Fator de Necrose Tumoral alfa , Humanos , Antioxidantes/metabolismo , Citocinas , Interleucina-6 , Malondialdeído , Estresse Oxidativo , Interleucinas/sangue
18.
Life Sci ; 304: 120679, 2022 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-35662648

RESUMO

PURPOSES: Hepatic bioactivation of fluoxetine (FXN) could increase free radicals' generation provoking hepatotoxicity. Therefore, the protective effects of ellagic acid (EA) and taurine (TAU) treatments against fluoxetine-induced liver damage in rats were examined. MATERIALS AND METHODS: Sixty four male Wistar rats were randomly assigned to 8 groups (n = 8). Group (1) Control, group (2) FXN, group (3) FXN + EA, group (4) FXN + TAU, group (5) FXN + EA + TAU, group (6) EA, group (7) TAU, and group (8) EA + TAU. Then, the serum and tissue parameters of the oxidative stress were examined. KEY FINDINGS: FXN significantly raised serum MDA, protein carbonyl, lipid profile, ALT, AST, ALP, total bilirubin, serum IL-1ß; and gene expressions of IL-1ß, NF-κB, and TNF-α. Moreover, it significantly decreased HDL-C, ferric reducing antioxidant power (FRAP), catalase activity, vitamin C, and SOD activity in the liver compared to group 1. When compared to group 2, EA and TAU treatment dramatically increased antioxidant capacity and lowered hepatotoxic biochemical markers and cellular inflammation. Results also showed a protective effect of treatment against oxidative damage caused by hepatocytes' cytoarchitecture. SIGNIFICANCE: Our study concluded the beneficial effects of EA and TAU on FXN-induced hepatotoxicity. These effects were derived from free radical scavenging properties and the anti-inflammatory effects related to IL-1ß, NF-κB, and TNF-α gene expression inhibition.


Assuntos
Doença Hepática Induzida por Substâncias e Drogas , Ácido Elágico , Fluoxetina , NF-kappa B , Taurina , Fator de Necrose Tumoral alfa , Animais , Antioxidantes/metabolismo , Antioxidantes/farmacologia , Doença Hepática Induzida por Substâncias e Drogas/tratamento farmacológico , Doença Hepática Induzida por Substâncias e Drogas/metabolismo , Ácido Elágico/farmacologia , Fluoxetina/farmacocinética , Fluoxetina/farmacologia , Masculino , NF-kappa B/biossíntese , NF-kappa B/genética , NF-kappa B/metabolismo , Estresse Oxidativo , Ratos , Ratos Wistar , Taurina/farmacologia , Fator de Necrose Tumoral alfa/biossíntese , Fator de Necrose Tumoral alfa/genética , Fator de Necrose Tumoral alfa/metabolismo
19.
J Investig Med ; 70(8): 1720-1727, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-35636779

RESUMO

Coronary artery disease (CAD) due to atherosclerosis is one of the important reasons for death worldwide. Recent evidence has suggested the essential role of inflammation in the progression of atherosclerosis. Interleukin (IL)-37 is a critical anti-inflammatory member of the IL-1 family which regulates the inflammatory processes. The aim of this study was to compare the serum levels of IL-37 in patients with CAD compared with the control group and its correlation with oxidative stress, cholesterol homeostasis, and inflammation in patients with CAD. A total of 42 patients with CAD and 42 sex-matched and age- matched controls who underwent coronary angiography were included in this study. The serum levels of IL-37 were evaluated via ELISA. Serum levels of biochemical risk factors were determined by enzymatic methods. Serum levels of IL-37 in the CAD group subjects were significantly lower than in the control group and IL-37 was significantly increased in men with CAD than in women with CAD. IL-37 significantly had an inverse correlation with IL-6, tumor necrosis factor-α, IL-32, high-sensitivity C reactive protein, oxidized low-density lipoprotein, and malondialdehyde. Also, IL-37 had a significantly positive correlation with ferric-reducing antioxidant power (FRAP) assay. In addition, IL-37 has positively correlated with ATP-binding cassette transporter A1 and G1 gene expression in peripheral blood mononuclear cells and serum levels of the FRAP. A receiver operating characteristic test displayed that IL-37 level ratios were a relatively significant CAD predictor. Our results indicated that decreased serum levels of IL-37 in patients with CAD and its relationship with inflammatory cytokines and reverse cholesterol transport genes are more likely to be associated in the inflammatory process with disease pathology.


Assuntos
Aterosclerose , Doença da Artéria Coronariana , Feminino , Humanos , Masculino , Aterosclerose/genética , Colesterol , Citocinas/metabolismo , Inflamação , Leucócitos Mononucleares/metabolismo
20.
BMC Psychol ; 10(1): 123, 2022 May 13.
Artigo em Inglês | MEDLINE | ID: mdl-35562792

RESUMO

BACKGROUND: Midwives' stress can have negative consequences on their emotional state, burnout, and poor quality of midwifery care. This study aimed to determine the effectiveness of an adapted mindfulness-based stress management program on perceived stress and the emotional regulation of midwives. METHODS: The study was a parallel randomized clinical trial on the midwives working in general hospitals of Zanjan, Iran. In this study, 121 midwives registered to participate based on the census sampling method were screened using a cut point of ≥ 28 in the Perceived Stress Scale (PSS). From the initial sample, 42 subjects had inclusion criteria assigned to two groups of control (n = 21) and intervention (n = 21) using online random allocation. The intervention group received an 8-week adapted mindfulness-based stress management program. This program emanates from the Kabat-Zinn's MBSR program, which has been adjusted according to the Iranian culture. The ANCOVA and repeated measure analysis of variance test were used to compare groups over time. RESULTS: The results showed that the group intervention effectively affected perceived stress (P = 0.001) and difficulty in emotion regulation during the post-intervention period (P = 0.001). Moreover, the interventions were effective in emotion regulation (P = 0.003), but it was not effective on perceived stress (P = 0.125) at the 3-month follow-up. CONCLUSIONS: This adapted mindfulness-based program successfully reduced stress and increased emotion regulation strategies in midwives; however, the long-term outcomes of this treatment program need further consideration.


Assuntos
Regulação Emocional , Tocologia , Atenção Plena , Depressão/psicologia , Feminino , Humanos , Irã (Geográfico) , Atenção Plena/métodos , Gravidez , Estresse Psicológico/psicologia , Estresse Psicológico/terapia
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