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1.
Nat Immunol ; 24(4): 604-611, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36879067

RESUMO

Infection with severe acute respiratory syndrome coronavirus 2 associates with diverse symptoms, which can persist for months. While antiviral antibodies are protective, those targeting interferons and other immune factors are associated with adverse coronavirus disease 2019 (COVID-19) outcomes. Here we discovered that antibodies against specific chemokines were omnipresent post-COVID-19, were associated with favorable disease outcome and negatively correlated with the development of long COVID at 1 yr post-infection. Chemokine antibodies were also present in HIV-1 infection and autoimmune disorders, but they targeted different chemokines compared with COVID-19. Monoclonal antibodies derived from COVID-19 convalescents that bound to the chemokine N-loop impaired cell migration. Given the role of chemokines in orchestrating immune cell trafficking, naturally arising chemokine antibodies may modulate the inflammatory response and thus bear therapeutic potential.


Assuntos
COVID-19 , Humanos , SARS-CoV-2 , Autoanticorpos , Síndrome de COVID-19 Pós-Aguda , Quimiocinas
2.
Arch Microbiol ; 197(6): 773-80, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25868793

RESUMO

In Saccharomyces cerevisiae, a typical apoptotic phenotype is induced by some stress factors such as sugars, acetic acid, hydrogen peroxide, aspirin and age. Nevertheless, no data have been reported for apoptosis induced by puromycin, a damaging agent known to induce apoptosis in mammalian cells. We treated S. cerevisiae with puromycin to induce apoptosis and evaluated the percentage of dead cells by using Hoechst 33342 staining, transmission electron microscopy (TEM) and Annexin V flow cytometry (FC) analysis. Hoechst 33342 fluorescence images were processed to acquire parameters to use for multiparameter analysis [and perform a principal component analysis, (PCA)]. Cell viability was evaluated by Rhodamine 123 (Rh 123) and Acridine Orange microscope fluorescence staining. The results show puromycin-induced apoptosis in S. cerevisiae, and the PCA analysis indicated that the increasing percentage of apoptotic cells delineated a well-defined graph profile. The results were supported by TEM and FC. This study gives new insights into yeast apoptosis using puromycin as inducer agent, and PCA analysis may complement molecular analysis facilitating further studies to its detection.


Assuntos
Apoptose/efeitos dos fármacos , Inibidores da Síntese de Proteínas/farmacologia , Puromicina/farmacologia , Saccharomyces cerevisiae/efeitos dos fármacos , Citometria de Fluxo , Microscopia Eletrônica de Transmissão , Análise de Componente Principal , Saccharomyces cerevisiae/fisiologia
3.
Eur Arch Psychiatry Clin Neurosci ; 264(2): 155-69, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23835528

RESUMO

The underlying structures of clinical caseness and need of care in prodromal (i.e., at-risk) and early phases of schizophrenia remain poorly characterized in their essential psycho-behavioral coherence. To identify the schizophrenia proneness-related subtypes within a population of young help-seekers referred to a dedicated, community-based early detection program (Programma 2000). A sample of consecutive referrals (n = 168) for suspected psychosis or first-episode schizophrenia spectrum psychosis received a detailed clinical assessment, including the early recognition inventory for the retrospective assessment of the onset of schizophrenia checklist. We used exploratory factor analysis (EFA) to determine the underlying dimensional structure and latent class analysis (LCA) to identify putative vulnerability subtypes. EFA identified four factors: dysphoria (irritability tension), paranoid autocentrism, introversive withdrawal, and disturbed subjective experience. LCA distinguished three classes, interpretable as carrying different degrees of "proneness to schizophrenia psychosis," which best captured the underlying continuum of clinical severity. The validity of the three classes was supported by distinct patterns of association with major clinical variables (i.e., diagnostic staging at referral). Vulnerability to schizophrenia psychosis in young help-seekers may manifest in three major clinical prototypes, presenting common levels of dysphoria and social withdrawal but different degrees of paranoid autocentrism and disturbed subjective experience. Overall, the results provide the empirical background to dissect shared features of clinical caseness from more schizophrenia-specific vulnerability components. This is of value for the refinement of the clinical staging model as well as for the pragmatic implementation of multiple-gate screening programs.


Assuntos
Transtorno Depressivo Maior/fisiopatologia , Sintomas Prodrômicos , Transtornos Psicóticos/fisiopatologia , Esquizofrenia/diagnóstico , Esquizofrenia/fisiopatologia , Psicologia do Esquizofrênico , Adolescente , Adulto , Transtorno Depressivo Maior/diagnóstico , Feminino , Humanos , Masculino , Transtornos Psicóticos/diagnóstico , Características de Residência , Estudos Retrospectivos , Estatísticas não Paramétricas , Adulto Jovem
4.
Front Public Health ; 12: 1375817, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38746006

RESUMO

Introduction: Both mental and physical health of office workers had a positive relationship with their work engagement, with the latter relationship being driven by the association of a healthy diet and physical activity (PA). This observational study aimed to investigate the associations between PA levels, musculoskeletal disorders (MSDs), burnout, and work engagement, in a sample of white-collar employees. Methods: A total of 615 workers (age 42.2 ± 9.5 years) successfully completed an online questionnaire comprising work-related information and standardized questionnaires on PA, MSDs, burnout and work engagement. Results: 36.9% of the participants did not meet the PA guidelines, 19.0% adhered to them, and 44.1% exceeded them. A significant portion of participants reported suffering from MSDs, primarily neck/shoulder and/or low back/hip pain. Those exceeding PA guidelines had fewer MSDs compared to non-compliant participants and exhibited better mental health and work engagement. Compliance with PA guidelines was associated with a 38% reduced risk of emotional exhaustion, with an even greater reduction of 47% among those surpassing the guidelines. Discussion: PA could exert a positive effect on physical and mental health of employees, but only if performed above a certain amount. The study supports the need to identify workplaces as suitable for health-focused interventions and lifestyle changes.


Assuntos
Exercício Físico , Doenças Musculoesqueléticas , Engajamento no Trabalho , Humanos , Adulto , Feminino , Masculino , Estudos Transversais , Doenças Musculoesqueléticas/epidemiologia , Itália , Exercício Físico/psicologia , Inquéritos e Questionários , Pessoa de Meia-Idade , Esgotamento Profissional/psicologia , Local de Trabalho/psicologia
5.
J Strength Cond Res ; 27(3): 769-75, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22706575

RESUMO

The aim of this study was to identify the main components that determine firefighters' level of physical fitness using a stair-climbing test. The age, weight, height, body fat, and VO(2max) of the firefighters were recorded before the trial, and percentage of heart rate reserve (%HRR) was recorded during the stair climbing. Nonlinear modeling of HRR time series and Principal Component Analysis (PCA) was applied to the data to isolate a small number of variables that quantify overall individual physical fitness. The HRR was represented as a function of time using the sum of linear and trigonometric functions. Four main factors that influence performance, obtained from PCA analysis, emerged (78.2% of total explained variance): the capacity to carry the extra load (22.8% of total variance); the effect of body fat (19.6% of total variance); the influence of age in the task (19.3% of total variance); and the overall fitness level (16.4% of total variance). This approach allowed us to make a rapid assessment of each subject's fitness level. Such an assessment could be used in planning individualized functional training programs to improve each firefighter's job performance and reduce injuries and hence save time, energy, and financial resources.


Assuntos
Teste de Esforço/métodos , Bombeiros , Aptidão Física/fisiologia , Adulto , Fatores Etários , Distribuição da Gordura Corporal , Frequência Cardíaca/fisiologia , Humanos , Masculino , Pessoa de Meia-Idade , Consumo de Oxigênio/fisiologia , Análise de Componente Principal
6.
Front Immunol ; 14: 1129060, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36936914

RESUMO

Introduction: Upper respiratory tract infections (URTI) are the most common illnesses affecting athletes, causing absences from training and competition. Salivary immunoglobulin A (sIgA) is the main immune factor in saliva, and a consistent association between low concentrations of sIgA and an increased incidence of URTIs has been reported. The oral probiotic Streptococcus salivarius K12 has been suggested to have the potential to improve oral diseases and mucosal barrier function. However, the effects of this probiotic on active young subjects performing a high-intensity training (HIT) program have not been investigated. Methods: Active young students were randomised into a treated group (S. salivarius K12) and a control (placebo) group and asked to take the product daily for 30 days. After this period, participants performed a graded exercise test and five HIT sessions, all within 3 days. They were also asked to complete the Wisconsin Upper Respiratory Symptom Survey daily to monitor URTI's presence. Before and after the 30 days, and at 0h, 24h and 72h after the last training session, saliva samples were collected to quantify sIgA level, secretion rate, and flow. The effect of S. salivarius K12 intake on these parameters was tested using an ANOVA for repeated measures. Results: Twenty (M = 14, F = 6) young subjects (23.5 ± 2.3 years old) participated in the study. The total accumulated training load (sRPE) in the supplementation period was similar in the two groups (treated: 4345 ± 3441 AU; control: 4969 ± 4165 AU; p > 0.05). Considering both sIgA level and secretion rate, significant time (F(4,15) = 3.38; p = 0.037; F(4,15) = 6.00; p = 0.004) and time×group interactions (F(4,15) = 2.49; p = 0.049; F(4,15) = 5.01; p = 0.009) were reported, with the treated group showing higher sIgA levels at 72h post-exercise and increased secretion rate both at 0h and 72h. The number of URTI episodes was similar in the treated and control groups (χ² = 1.83; p > 0.05). Conclusion: This study demonstrates that relatively short-term S. salivarius K12 supplementation increased sIgA level and secretion in healthy subjects performing a demanding exercise-training programme composed of HIT sessions.


Assuntos
Streptococcus salivarius , Humanos , Adulto Jovem , Adulto , Método Duplo-Cego , Imunoglobulina A Secretora , Saliva , Imunidade
7.
Artigo em Inglês | MEDLINE | ID: mdl-36982094

RESUMO

Numerous athletes compete at a high level without consuming animal products; although a well-planned vegan diet might be appropriate for all stages of the life cycle, a few elements need to be addressed to build a balanced plant-based diet for an athlete, particularly in bodybuilding, in which muscle growth should be maximised, as athletes are judged on their aesthetics. In this observational study, nutritional intakes were compared in a cohort of natural omnivorous and vegan bodybuilders, during two different phases of preparation. To this end, 18 male and female bodybuilders (8 vegans and 10 omnivores) completed a food diary for 5 days during the bulking and cutting phases of their preparation. A mixed-model analysis was used to compare macro- and micronutrient intakes between the groups in the two phases. Both vegans and omnivores behaved similarly regarding energy, carbohydrate, and fat intakes, but vegans decreased their protein intake during the cutting phase. Our results suggest that vegan bodybuilders may find difficulties in reaching protein needs while undergoing a caloric deficit, and they might benefit from nutritional professionals' assistance to bridge the gap between the assumed proteins and those needed to maintain muscle mass through better nutrition and supplementation planning.


Assuntos
Dieta Vegana , Veganos , Animais , Humanos , Estudos Transversais , Estado Nutricional , Inquéritos e Questionários , Dieta
8.
Eur J Sport Sci ; 23(8): 1600-1611, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35960537

RESUMO

This study aimed to assess if, during incremental exercise, considering individual characteristics can make the relationship between the percentages of heart rate (HRR) and oxygen uptake (V̇O2R) reserve either 1:1 or more accurate. Cycle ergometer data of the maximal incremental exercise tests performed by 450 healthy and sedentary participants (17-66 years) of the HERITAGE Family Study, grouped for sex, ethnicity, age, body fat, resting HR, and V̇O2max, were used to calculate the individual linear regressions between %HRR and %V̇O2R. The mean slope and intercept of the individual linear regressions of each subgroup were compared with 1 and 0 (identity line), respectively, using Hotelling tests followed by post-hoc one-sample t-tests. Two multiple linear regressions were also performed, using either the slopes or intercepts of the individual linear regressions as dependent variables and sex, age, resting HR, and V̇O2max as independent variables. The mean %HRR-%V̇O2R relationships of all subgroups differed from the identity line. Moreover, individual linear regression intercepts (8.9 ± 16.0) and slopes (0.971 ± 0.190) changed (p < 0.001) after 20 weeks of aerobic training (13.1 ± 11.1 and 0.891 ± 0.122). The multiple linear regressions could explain only 3.8% and 1.3% of the variance in the intercepts and slopes, whose variability remained high (standard error of estimate of 15.8 and 0.189). In conclusion, the %HRR-%V̇O2R relationship differs from the identity line regardless of individual characteristics and their difference increased after aerobic training. Moreover, due to the high interindividual variability, using a single equation for the whole population seems not suitable for representing the %HRR-%V̇O2R relationship of a given subject, even when several individual characteristics are considered.HighlightsThe association between %HRR and %V̇O2R is not 1:1 even when individuals are grouped by age, sex, ethnicity, body composition, HRrest, and V̇O2max.Using several subject characteristics to identify the individual's %HRR-%V̇O2R relationship does not meaningfully increase its prediction accuracy or reduce the interindividual variability of %HRR-%V̇O2R relationshipsUsing a single equation for the whole population is not suitable for representing the relationship of a given subject; hence, individual relationships should be preferred when prescribing the intensity of aerobic exercise.The individual %HRR-%V̇O2R relationship should be periodically assessed due to the potential training induced changes in the relationship.


Assuntos
Exercício Físico , Consumo de Oxigênio , Humanos , Consumo de Oxigênio/fisiologia , Frequência Cardíaca/fisiologia , Exercício Físico/fisiologia , Teste de Esforço , Ergometria
9.
Sports Med ; 53(4): 887-901, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36840913

RESUMO

BACKGROUND: Workplace exercise interventions showed good results, but lack of time was often reported as a barrier to participation. To overcome this problem, several studies attempted to implement short high-intensity interval training (HIT) within the workplace. OBJECTIVES: The aim of this systematic review is to explore the feasibility and effectiveness of HIT interventions within the workplace setting. DATA SOURCES: A systematic literature search was conducted in PubMed and SPORTDiscus to identify articles related to HIT within the workplace. STUDY ELIGIBILITY CRITERIA: Only interventions that consisted of HIT programmes within the workplace and tested at least one physiological, psychological, or work-related outcome were included. RESULTS: Seven studies (317 participants) met the inclusion criteria. HIT interventions lasted 6-12 weeks, with a frequency of 2-4 sessions/week and a duration of 8-30 min per session. Feasibility was qualitatively investigated in four studies, with key positive aspects reported for HIT time-appeal, the sense of competence driven by individual intensity, and improved intention to exercise; five studies reported adherence rates > 80%. Small-to-large effect sizes were reported for improvements in cardiorespiratory and muscular fitness. Small-to-medium effect sizes were reported for blood parameters and health-related quality of life. CONCLUSIONS: HIT interventions in the workplace showed limited effectiveness in improving health-related outcomes, while promising results regarding feasibility were reported, mainly due to the time-efficiency and the positive post-exercise psychosocial responses. However, further high-quality studies involving more participants are still needed to make firm conclusions on HIT effectiveness and feasibility compared to other types of exercise in this context.


Assuntos
Exercício Físico , Qualidade de Vida , Humanos , Estudos de Viabilidade , Local de Trabalho , Fatores de Tempo
10.
Front Oncol ; 13: 1225645, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37727203

RESUMO

Background: Breast cancer (BC) is the second-leading cause of cancer-related death worldwide. This study aimed to investigate the effects of a 12-week home-based lifestyle intervention (based on nutrition and exercise) on gut microbial composition in twenty BC survivors of the MoviS clinical trial (protocol: NCT04818359). Methods: Gut microbiota analysis through 16S rRNA gene sequencing, anthropometrics, Mediterranean Diet (MD) adherence, and cardiometabolic parameters were evaluated before (Pre) and after (Post) the lifestyle intervention (LI). Results: Beneficial effects of the LI were observed on MD adherence, and cardiometabolic parameters (pre vs post). A robust reduction of Proteobacteria was observed after LI, which is able to reshape the gut microbiota by modulating microorganisms capable of decreasing inflammation and others involved in improving the lipid and glycemic assets of the host. A significant negative correlation between fasting glucose and Clostridia_vadinBB60 (r = -0.62), insulin and homeostatic model assessment (HOMA) index and Butyricicoccus genera (r = -0.72 and -0.66, respectively), and HDL cholesterol and Escherichia/Shigella (r = -0.59) have been reported. Moreover, positive correlations were found between MD adherence and Lachnospiraceae_ND3007 (r = 0.50), Faecalibacterium (r = 0.38) and Butyricimonas (r = 0.39). Conclusion: These data suggest that adopting a healthy lifestyle, may contribute to ameliorate several biological parameters that could be involved in the prevention of cancer relapses through the modulation of gut microbiota.

11.
Compr Psychiatry ; 53(7): 1039-43, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22444950

RESUMO

BACKGROUND AND PURPOSE: A large number of subjective experiences and beliefs with some degree of affinity with psychotic symptoms can be found in the general population. However, the appraisal of these psychotic-like experiences in terms of associated distress, raised preoccupation, and the conviction with which the experience is held can be more discriminative in distinguishing people in need for care from those who simply hold unusual or uncommon beliefs because of cultural reasons. METHOD: In this study, 81 patients with a Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, diagnosis of schizophrenia or an affective disorder with psychotic features were compared on the Peters et al Delusions Inventory (PDI) to 210 people from the same local area, who had never received a formal diagnosis of a mental disorder. RESULTS: Patients scored higher than controls on the PDI total score and on its distress, preoccupation, and conviction subscales. A stepwise logistic regression model showed PDI-preoccupation (odds ratio, 2.46; 95% confidence interval, 1.52-3.98) and, marginally, PDI-distress (odds ratio = 1.58; 95% confidence interval, 0.93-2.58) adding discriminative power to PDI total score in distinguishing patients from controls. CONCLUSIONS: The evaluation of the severity of delusion-like experiences and beliefs is important in discriminating patients diagnosed with psychosis from people who are not in need of care.


Assuntos
Delusões/diagnóstico , Transtornos Psicóticos/diagnóstico , Estresse Psicológico/psicologia , Adolescente , Adulto , Idoso , Delusões/psicologia , Manual Diagnóstico e Estatístico de Transtornos Mentais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Escalas de Graduação Psiquiátrica , Transtornos Psicóticos/psicologia , Índice de Gravidade de Doença , Inquéritos e Questionários
12.
Med Sci Law ; 52(2): 100-6, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22422785

RESUMO

Circadian and seasonal rhythms have an impact on the risk of violent death in humans, with more evidence available in suicide than in homicide. This study set out to investigate the pattern of deaths by homicide in Italy, taking into account the month, the day of the week and the time of day when the homicidal incident happened. Data based on official statistics on deaths by homicide (n = 3894) from 2003 to 2008 were analysed by spectral analysis and circular statistics techniques based on the Rayleigh test. Homicides showed seasonal distribution with a bimodal pattern, with summer (July and August) and winter (December and January) peaks over the other seasons. Homicides also peaked on Sundays and Mondays and were at their highest at night-time (00:00 to 5:59 hours). These rhythms in homicide victimization could be accounted for by social factors - within the framework of the routine activity theory - by psychological factors, including those leading to domestic violence, and by biological factors, including those impacting on impulse dyscontrol. The identification of risk or protective factors involved in the victim's surviving or succumbing to an assault might be important for the prevention of the worst outcome of injury at large, suicides and accidents included.


Assuntos
Homicídio/estatística & dados numéricos , Humanos , Itália/epidemiologia , Modelos Estatísticos , Estações do Ano , Fatores de Tempo
13.
Br J Pharmacol ; 179(2): 218-226, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34331459

RESUMO

The present work provides arguments for the involvement of anti-vector immunity and of SARS-CoV-2 variants on the efficacy of ChAdOx1 nCoV-19 vaccine. First, it is suggested that anti-vector immunity takes place as homologous vaccination with ChAdOx1 nCoV-19 vaccine is applied and interferes with vaccine efficacy when the interval between prime and booster doses is less than 3 months. Second, longitudinal studies suggest that ChAdOx1 nCoV-19 vaccine provides suboptimal efficacy against SARS-CoV-2 Alpha variant, which appears to have an increased transmissibility among vaccinated people. At the moment, ChAdOx1 nCoV-19 vaccine is able to reduce the severity of symptoms and transmissibility. However, if the vaccinated individuals do not maintain physical preventive measures, they could turn into potential spreaders, thus suggesting that mass vaccination will not quickly solve the pandemic. Possible consequences of SARS-CoV-2 evolution and of repeated anti-SARS-CoV-2 vaccinations are discussed and adoption of an influenza-like vaccination strategy is suggested.


Assuntos
COVID-19 , SARS-CoV-2 , Vacinas contra COVID-19 , ChAdOx1 nCoV-19 , Humanos , Eficácia de Vacinas
14.
Healthcare (Basel) ; 10(3)2022 Mar 18.
Artigo em Inglês | MEDLINE | ID: mdl-35327045

RESUMO

Alzheimer's disease (AD) is a neurodegenerative disorder, characterized by cortical dementia and irreversibly progressive developments leading to a vegetative state and, finally, to death. Although many aspects of its etiology, diagnosis and treatment still remain obscure and the current approach to the disease mostly suffers from limited and low-efficiency therapeutic means, nevertheless, recent interventions have aimed at improving patients' quality of life through nonpharmacological approaches, including animal-assisted therapy (AAT), arousing growing interest. In order to assess the physiological and neuropsychological effects of AAT on AD, 24 residents of a rest house in northern Italy were enrolled. The intervention consisted of one 45-minute AAT session per week over ten weeks. Twelve residents (six AD and six non-AD) received AAT and twelve (six AD and six non-AD) were controls. In order to evaluate the physiological and clinical effect of AAT on AD residents, three cardiac parameters, including the systolic and diastolic blood pressure and heart rate, were measured. Moreover, the neurocognitive and depressive states were assessed by the Mini Mental State Examination and the Geriatric Depression Scale, respectively. Analyses were performed by a four-way ANOVA model (including two ways for repeated measures) considering each main effect and interaction possible in the design. Our findings, despite the small sample size, suggest that AAT has a positive significant effect on physiological parameters and neurocognitive impairment, while no effect was observed on the depression level.

15.
J Funct Morphol Kinesiol ; 7(4)2022 Oct 14.
Artigo em Inglês | MEDLINE | ID: mdl-36278747

RESUMO

Body composition assessment is a relevant element in the biomedical field, in research and daily practice in the medical and nutritional fields, and in the management of athletes. This paper aimed to operate in an Italian sample investigating the possibility of predicting the somatotype from bioimpedance analysis and comparing the predicted results with those obtained from anthropometric measurements. This observational study was conducted with retrospective data collected from 2827 subjects. The somatotype of each subject was calculated both with the Heath−Carter method and by a multiple regression model based on bioimpedance and anthropometric parameters. Somatotypes (endomorph, mesomorph, and ectomorph) were predicted with a high goodness of fit (R2 adjusted > 0.80). Two different somatocharts were obtained from anthropometric measures and bioimpedance parameters and subsequentially compared. Bland−Altman plots showed acceptable accuracy. This study could be a first step in developing a new approach that allows the detection of a subject's somatotype via bioimpedance analysis, stratified according to sex, with a time-saving and more standardized procedure. It would allow, for example, during the COVID-19 pandemic, to minimize operator−patient contact in having measurements.

16.
Antioxidants (Basel) ; 11(5)2022 May 20.
Artigo em Inglês | MEDLINE | ID: mdl-35624869

RESUMO

Rubia cordifolia L. (Rubiaceae) is an important plant in Indian and Chinese medical systems. Extracts prepared from the root, stem and leaf have been used traditionally for the management of various diseases. Some of the known effects are anti-inflammation, neuroprotection, anti-proliferation, immunomodulation and anti-tumor. A comparative account of the extracts derived from different organs that lead to the identification of the most suitable solvent is lacking. We explored the presence of phytochemicals, antioxidant activity and anti-proliferative properties of a variety of solvent-based extracts of root, and methanol extracts of stem and leaf of R. cordifolia L. The antioxidant potential was determined by DPPH, hydrogen peroxide, nitric oxide and total antioxidant assays. The anti-proliferative nature was evaluated by MTT assay on HeLa, ME-180 and HepG2 cells. The composition of the extracts was determined by UPLC-UV-MS. We found that the root extracts had the presence of higher amounts of antioxidants over the stem and leaf extracts. The root extracts prepared in methanol exhibited the highest cytotoxicity in HepG2 cells. The main compounds identified through UPLC-UV-MS of the methanol extract give credibility to the previous results. Our comprehensive study corroborates the preference given to the root over the stem and leaf for extract preparation. In conclusion, we identified the methanol extract of the root to be the most suited to have bioactivity with anti-cancer potential.

17.
Sci Rep ; 12(1): 3952, 2022 03 10.
Artigo em Inglês | MEDLINE | ID: mdl-35273317

RESUMO

Numerous factors, ranging from genetics, age, lifestyle, and dietary habits to local environments, contribute to the heterogeneity of the microbiota in humans. Understanding the variability of a "healthy microbiota" is a major challenge in scientific research. The gut microbiota profiles of 148 healthy Italian volunteers were examined by 16S rRNA gene sequencing to determine the range and diversity of taxonomic compositions in the gut microbiota of healthy populations. Possible driving factors were evaluated through a detailed anamnestic questionnaire. Microbiota reference intervals were also calculated. A "scaffold" of a healthy Italian gut microbiota composition was identified. Differences in relative quantitative ratios of microbiota composition were detected in two clusters: a bigger cluster (C2), which included 124 subjects, was characterized by more people from the northern Italian regions, who habitually practised more physical activity and with fewer dietary restrictions. Species richness and diversity were significantly higher in this cluster (C2) than in the other one (C1) (C1: 146.67 ± 43.67; C2: 198.17 ± 48.47; F = 23.40; P < 0.001 and C1: 16.88 ± 8.66; C2: 35.01 ± 13.40; F = 40.50; P < 0.001, respectively). The main contribution of the present study was the identification of the existence of a primary healthy microbiological framework that is only marginally affected by variations. Taken together, our data help to contextualize studies on population-specific variations, including marginal aspects, in human microbiota composition. Such variations must be related to the primary framework of a healthy microbiota and providing this perspective could help scientists to better design experimental plans and develop strategies for precision tailored microbiota modulation.


Assuntos
Microbioma Gastrointestinal , Microbiota , Adulto , Fezes/microbiologia , Comportamento Alimentar , Microbioma Gastrointestinal/genética , Humanos , Microbiota/genética , RNA Ribossômico 16S/genética
18.
bioRxiv ; 2022 Nov 27.
Artigo em Inglês | MEDLINE | ID: mdl-35664993

RESUMO

Infection by SARS-CoV-2 leads to diverse symptoms, which can persist for months. While antiviral antibodies are protective, those targeting interferons and other immune factors are associated with adverse COVID-19 outcomes. Instead, we discovered that antibodies against specific chemokines are omnipresent after COVID-19, associated with favorable disease, and predictive of lack of long COVID symptoms at one year post infection. Anti-chemokine antibodies are present also in HIV-1 infection and autoimmune disorders, but they target different chemokines than those in COVID-19. Monoclonal antibodies derived from COVID- 19 convalescents that bind to the chemokine N-loop impair cell migration. Given the role of chemokines in orchestrating immune cell trafficking, naturally arising anti-chemokine antibodies associated with favorable COVID-19 may be beneficial by modulating the inflammatory response and thus bear therapeutic potential. One-Sentence Summary: Naturally arising anti-chemokine antibodies associate with favorable COVID-19 and predict lack of long COVID.

19.
Psychiatry Res ; 185(1-2): 97-101, 2011 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-20537711

RESUMO

Delusional beliefs and experiences can predict the development of mental disorders within the spectrum of psychosis. The nature, content and prevalence of delusional experiences in the general population are still disputed topics. This study investigates the latent structure of delusion proneness in the non-clinical population. Eight hundred young adults (400 from Italy and 400 from the United Kingdom) completed the Peters et al. delusions inventory, a general population measure of delusional proneness. Latent class analysis was used to explore the latent structure of delusion proneness. Four classes were identified: low delusion proneness (including 28% of the sample), grandiosity (13%), paranoid thinking (41%) and positive psychotic beliefs (18%). Latent structures of sub-clinical symptoms can be observed also in non-clinical population; paranoid thinking is the most common delusional theme.


Assuntos
Delusões/diagnóstico , Delusões/epidemiologia , Inventário de Personalidade , Adolescente , Adulto , Fatores Etários , Feminino , Humanos , Itália , Masculino , Análise Multivariada , Psicometria , Índice de Gravidade de Doença , Fatores Sexuais , Reino Unido , Adulto Jovem
20.
Recenti Prog Med ; 112(9): 587-593, 2021 09.
Artigo em Italiano | MEDLINE | ID: mdl-34423793

RESUMO

INTRODUCTION: Nomophobia, a form of behavioral addiction, is uncontrolled, obsessive fear of being disconnected from the mobile phone network. Excessive use of smartphone during care, a source of errors and distractions, is among the top ten risks related to the use of technologies in healthcare. The study aims to investigate the presence of nomophobia among nurses and students of the Degree in Nursing and any differences based on gender, age group and seniority. METHODS: A cross-sectional quantitative descriptive study conducted at Università Politecnica delle Marche and Azienda Ospedali Riuniti Marche Nord departments; the NMP-Q questionnaire (Nomophobia Questionnaire) was administered to a non-probabilistic sample of nurses and nursing students. The data were analyzed using descriptive and inferential non-parametric statistical measurements. RESULTS: A total of 280 questionnaires were returned, 141 for students and 139 for nurses. The mean total score for students and nurses was moderate and overlapping (M=79.9 vs. 79.3, p>0.05), with no difference by gender and course year (p>0.05); in the sample of nurses score is higher in men (M=89.8 vs. 76.0, p=0.037), under 30 (M=72.0) and over 50 years (M=83.1, p=0.021). The comparison between the two groups shows higher percentages of moderate nomophobic grade among students (+17pp), mild (+8.2 pp) and severe (+7.4 pp) among nurses, without significant gender differences. CONCLUSIONS: In the perspective of proper risk management, the level of nomophobia found in both groups should not be underestimated. This study highlights the importance of monitoring the phenomenon, adopting information and awareness-raising policies aimed at healthcare personnel as early as university training: distracting factors associated with the over-use of smartphones in the workplace make nurses, particularly newly graduates and with less expertise, more vulnerable and more exposed to the risk of error.


Assuntos
Ansiedade , Estudantes de Enfermagem , Estudos Transversais , Humanos , Masculino , Smartphone , Inquéritos e Questionários , Universidades
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