scholarly journals Antimicrobial Peptides and Physical Activity: A Great Hope against COVID 19

2021 ◽  
Vol 9 (7) ◽  
pp. 1415
Author(s):  
Sonia Laneri ◽  
Mariarita Brancaccio ◽  
Cristina Mennitti ◽  
Margherita G. De Biasi ◽  
Maria Elena Pero ◽  
...  
Keyword(s):  
Physical Activity ◽  
Antimicrobial Peptides ◽  
Intracellular Signaling ◽  
Chemokine Receptors ◽  
Healthy Lifestyle ◽  
Direct Interaction ◽  
Vaccine Adjuvants ◽  
Viral Inhibition ◽  
Immune Modulators ◽  
Surface Receptors

Antimicrobial peptides (AMPs), α- and β-defensins, possess antiviral properties. These AMPs achieve viral inhibition through different mechanisms of action. For example, they can: (i) bind directly to virions; (ii) bind to and modulate host cell-surface receptors, disrupting intracellular signaling; (iii) function as chemokines to augment and alter adaptive immune responses. Given their antiviral properties and the fact that the development of an effective coronavirus disease 2019 (COVID-19) treatment is an urgent public health priority, they and their derivatives are being explored as potential therapies against COVID-19. These explorations using various strategies, range from their direct interaction with the virus to using them as vaccine adjuvants. However, AMPs do not work in isolation, specifically in their role as potent immune modulators, where they interact with toll-like receptors (TLRs) and chemokine receptors. Both of these receptors have been shown to play roles in COVID-19 pathogenesis. In addition, it is known that a healthy lifestyle accompanied by controlled physical activity can represent a natural weapon against COVID-19. In competitive athletes, an increase in serum defensins has been shown to function as self-protection from the attack of microorganisms, consequently a controlled physical activity could act as a support to any therapies in fighting COVID-19. Therefore, including information on all these players’ interactions would produce a complete picture of AMP-based therapies’ response.

scholarly journals ERK and β-Arrestin Interaction

2014 ◽  
Vol 20 (3) ◽  
pp. 341-349 ◽  
Author(s):  
Haifeng Eishingdrelo ◽  
Wei Sun ◽  
Hua Li ◽  
Li Wang ◽  
Alex Eishingdrelo ◽  
...  
Keyword(s):  
Signaling Pathways ◽  
Protein Interactions ◽  
Tyrosine Kinases ◽  
Intracellular Signaling ◽  
Kinase Inhibitors ◽  
Adaptor Protein ◽  
Direct Interaction ◽  
Signal Pathways ◽  
Surface Receptors ◽  
Extracellular Stimuli

β-Arrestin, a signal adaptor protein, mediates intracellular signal transductions through protein-protein interactions by bringing two or more proteins in proximity. Extracellular signal-regulated kinase (ERK), a protein kinase in the family of mitogen-activated protein kinases (MAPKs), is involved in various receptor signal pathways. Interaction of ERK with β-arrestin or formation of ERK/β-arrestin signal complex occurs in response to activation of a variety of cell surface receptors. The ERK/β-arrestin signal complex may be a common transducer to converge a variety of extracellular stimuli to similar downstream intracellular signaling pathways. By using a cell-based protein-protein interaction LinkLight assay technology, we demonstrate a direct interaction between ERK and β-arrestin in response to extracellular stimuli, which can be sensitively and quantitatively monitored. Activations of G protein–coupled receptors (GPCRs), receptor tyrosine kinases (RTKs), and cytokine receptors promote formation of the ERK/β-arrestin signal complex. Our data indicate that the ERK/β-arrestin signal complex is a common transducer that participates in a variety of receptor signaling pathways. Furthermore, we demonstrate that receptor antagonists or kinase inhibitors can block the agonist-induced ERK and β-arrestin interaction. Thus, the ERK/β-arrestin interaction assay is useful for screening of new receptor modulators.

scholarly journals Ramping Up Antimicrobial Peptides Against Severe Acute Respiratory Syndrome Coronavirus-2

2021 ◽  
Vol 8 ◽  
Author(s):  
Santosh K. Ghosh ◽  
Aaron Weinberg
Keyword(s):  
Severe Acute Respiratory Syndrome ◽  
Antimicrobial Peptides ◽  
Human Mesenchymal Stem Cell ◽  
Viral Inhibition ◽  
Surface Receptors ◽  
Adaptive Immune ◽  
Viral Particles ◽  
Direct Binding ◽  
Host Cell Surface ◽  
Host Inflammatory Response

Human-derived antimicrobial peptides (AMPs), such as defensins and cathelicidin LL-37, are members of the innate immune system and play a crucial role in early pulmonary defense against viruses. These AMPs achieve viral inhibition through a variety of mechanisms including, but not limited to, direct binding to virions, binding to and modulating host cell-surface receptors, blocking viral replication, and aggregation of viral particles and indirectly by functioning as chemokines to enhance or curb adaptive immune responses. Given the fact that we are in a pandemic of unprecedented severity and the urgent need for therapeutic options to combat severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), naturally expressed AMPs and their derivatives have the potential to combat coronavirus disease 2019 (COVID-19) and impede viral infectivity in various ways. Provided the fact that development of effective treatments is an urgent public health priority, AMPs and their derivatives are being explored as potential prophylactic and therapeutic candidates. Additionally, cell-based platforms such as human mesenchymal stem cell (hMSC) therapy are showing success in saving the lives of severely ill patients infected with SARS-CoV-2. This could be partially due to AMPs released from hMSCs that also act as immunological rheostats to modulate the host inflammatory response. This review highlights the utilization of AMPs in strategies that could be implemented as novel therapeutics, either alone or in combination with other platforms, to treat CoV-2–infected individuals.

Hygienic characteristics of the cosmetologists' lifestyle

2020 ◽  
Vol 60 (12) ◽  
pp. 958-963
Author(s):  
Natalia I. Latyshevskaya ◽  
Tatyana L. Yatsyshena ◽  
Elena L. Shestopalova ◽  
Irina Yu. Krainova
Keyword(s):  
Physical Activity ◽  
Risk Factors ◽  
Information And Communication Technologies ◽  
Health Risks ◽  
Healthy Lifestyle ◽  
Personal Hygiene ◽  
Risk Category ◽  
Essential Components ◽  
Group A ◽  
Group B

Modern trends in the deterioration of health and the growth of non-communicable diseases among the adult working-age population, including medical workers, actualize the importance of a healthy lifestyle for maintaining health and professional longevity. There were almost no studies related to cosmetologists' experienced group as representatives of aesthetic medicine. There is no scientific evidence on behavioral risks of this group. It justifies the relevance of this study. The study aims to analyze the essential components of the cosmetologists' lifestyle depending on age and the argumentation of priority behavioral health risk factors for preventive and recreational work justification. Sixty women (practicing cosmetologists in Volgograd at the age of 28-39 years (group A) and 40-53 (group B)) took part in the study. Lifestyle assessment included a modified questionnaire. The questionnaire consists of 5 blocks (block 1 - nutrition; 2 - physical activity, including hardening and active rest; 3 - daily regimen; 4 - personal hygiene; 5 - bad habits). It allows the analysis of the adherence to a healthy lifestyle based on the provision of quantitative data. Statistical data processing was carried out using the Excel package. The authors identified the essential and statistically significant differences in the cosmetologists' lifestyle depending on age. The respondents of group B demonstrated hygienically rational indicators in all blocks of the lifestyle more often. They had a more formed adherence to a healthy lifestyle: 504 answers in the category "insignificant risk" of respondents in group B versus 354 in group A. Distribution of answers in the "high risk" category: 119 responses in group B and 185 in group A. The lifestyle of 46.7% of the respondents in group B refers to a healthy lifestyle. 3.3% of the group B respondents have an anxious lifestyle, 50% have health risks. 10% of Group A respondents' lifestyle refers to a healthy lifestyle. 13.3% of Group A respondents' lifestyle refers to an anxious lifestyle; 76.7% of this group have health risks. There was almost no complex hygienic research profession of medical cosmetologists. Cosmetologists of the older age group (40-53 years old) are more conscious of maintaining a hygienically rational lifestyle. The most significant defects among cosmetologists aged 28-39 years are low physical activity, nutritional defects, insufficient duration of night rest, and excessive use of information and communication technologies for rest, accompanied by manifestations of neurotization and signs of pronounced fatigue. The obtained results argue the need to develop and implement informational and educational measures to prevent risk behavior patterns, taking into account the age of cosmetologists and the priority of the identified behavioral risk factors.

Physical activity promotion in primary health care in Slovenia

2014 ◽  
Vol 62 (2) ◽  
Keyword(s):  
Physical Activity ◽  
Cardiovascular Disease ◽  
Health Promotion ◽  
Health Professionals ◽  
Healthy Lifestyle ◽  
Graduate Nurses ◽  
Primary Health ◽  
The Family ◽  
Prevention Of Cardiovascular Disease

In Slovenia, the role of general practitioners in counselling physical activity for prevention of cardiovascular disease (CVD) is well recognized. The role of general practitioners in advising healthy lifestyle for individuals who are at risk of developing CVD is formally defined in the National Program for Primary Prevention of Cardiovascular Disease, which has been running since 2001. Part of the program is counselling on healthy lifestyle including physical activity, performed in all health centres across the country. First a screening and medical examination is performed. In case of higher risk for CVD (>20%) the physician should give advice on the particular risk factor and direct patients to health-education centres, where they can participate in healthy lifestyle workshops lead by health professionals. Physicians and other health professionals who are involved in the implementation of prevention activities within the program need knowledge and skills that are crucial for successful counselling on healthy lifestyle. The educational program “basic education in health promotion and prevention of chronic non-communicable diseases in primary health care/family medicine” consists of two parts. The first part of the training is open to all health professionals working within the program. The second part is intended for health professionals working in health-education workshops. In the last few years a new family practice model has been introduced and disseminated. Some duties of the family physician, including health promotion and counselling, are being transferred to graduate nurses who become part of the family practice team. This new division of work undoubtedly brings many advantages, both in terms of the work organization, and of high-quality patient care. Nevertheless preventive action cannot be fully passed on to graduate nurses. Careful planning and education are needed to ensure a comprehensive approach in healthy life style counselling.

scholarly journals Melatonin in Wine and Beer: Beneficial Effects

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 343
Author(s):  
Javier Marhuenda ◽  
Débora Villaño ◽  
Raúl Arcusa ◽  
Pilar Zafrilla
Keyword(s):  
Intracellular Signaling ◽  
Plasma Concentrations ◽  
Radical Scavenging ◽  
Direct Interaction ◽  
Melatonin Receptors ◽  
Current Evidence ◽  
Sleep Cycle ◽  
Beneficial Effects ◽  
Neuroprotective Actions ◽  
Radical Scavenging Properties

Melatonin is a hormone secreted in the pineal gland with several functions, especially regulation of circadian sleep cycle and the biological processes related to it. This review evaluates the bioavailability of melatonin and resulting metabolites, the presence of melatonin in wine and beer and factors that influence it, and finally the different benefits related to treatment with melatonin. When administered orally, melatonin is mainly absorbed in the rectum and the ileum; it has a half-life of about 0.45–1 h and is extensively inactivated in the liver by phase 2 enzymes. Melatonin (MEL) concentration varies from picograms to ng/mL in fermented beverages such as wine and beer, depending on the fermentation process. These low quantities, within a dietary intake, are enough to reach significant plasma concentrations of melatonin, and are thus able to exert beneficial effects. Melatonin has demonstrated antioxidant, anticarcinogenic, immunomodulatory and neuroprotective actions. These benefits are related to its free radical scavenging properties as well and the direct interaction with melatonin receptors, which are involved in complex intracellular signaling pathways, including inhibition of angiogenesis and cell proliferation, among others. In the present review, the current evidence on the effects of melatonin on different pathophysiological conditions is also discussed.

scholarly journals The Comparison of Physical Activity, Sedentary Behavior, and Mental Health between Early Menopausal Women and Age-Matched General Middle-Aged Women

2021 ◽  
Vol 18 (14) ◽  
pp. 7256
Author(s):  
Ji-Su Kim ◽  
Ju-Pil Choe ◽  
Jeong-Hui Park ◽  
Eunhye Yoo ◽  
Jung-Min Lee
Keyword(s):  
Mental Health ◽  
Physical Activity ◽  
Sedentary Behavior ◽  
Healthy Lifestyle ◽  
Multinomial Logistic Regression ◽  
Middle Aged ◽  
General Group ◽  
Menopausal Women ◽  
Global Physical Activity Questionnaire ◽  
Causes Of Mortality

The current study is to examine the differences in physical activity (PA), sedentary behavior (SB), and mental health (i.e., stress, depression, and suicidal behaviors) between early menopausal women and age-matched general middle-aged women. Among 1348 participants in South Korea, 674 participants who experienced menopause before the age of 45 were defined as the early menopausal group, and 674 women who experienced menopause from 45 years to 55 years were classified as the general group by matching age based on early menopausal women. PA, SB, and mental health were evaluated by using the Global Physical Activity Questionnaire (GPAQ). An independent t-test was used to compare the associations of PA, SB, and mental health between the two groups. To demonstrate the predictors of early menopause, variables in the study were analyzed by multinomial logistic regression. The main findings were that moderate-to-vigorous PA (MVPA) and light PA (LPA) had significant differences between the two groups, but SB had no significant differences. In mental health, only perceived stress had significant differences in this study. The moderate level of stress in the early menopausal group was twice as high as that of the general group, and the severe level of stress was even 2.6 times higher than the general group. PA plays an essential role in mitigating the causes of mortality and the risk of various chronic diseases and improving quality of life; thus, the main findings of this study could be important to provide insights on the corresponding impact between early menopausal women and PA to encourage their healthy lifestyle. Further longitudinal studies are needed to examine the mechanisms underlying the effects of PA, SB, and mental health on early menopausal women.

Higher Healthy Lifestyle Score is associated with lower presence of non-alcoholic fatty liver disease in middle-aged and older Chinese adults: a community-based cross-sectional study

2021 ◽  
pp. 1-9
Author(s):  
Yun-yang Deng ◽  
Qing-wei Zhong ◽  
Hai-li Zhong ◽  
Feng Xiong ◽  
Yue-bin Ke ◽  
...  
Keyword(s):  
Physical Activity ◽  
Liver Disease ◽  
Fatty Liver Disease ◽  
Healthy Lifestyle ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Community Based ◽  
Cross Sectional ◽  
Alcoholic Fatty Liver ◽  
Alcoholic Fatty Liver Disease

Abstract Objective: Previous studies have reported inverse associations between certain healthy lifestyle factors and non-alcoholic fatty liver disease (NAFLD), but limited evidence showed the synergistic effect of those lifestyles. This study examined the relationship of a combination of lifestyles, expressed as Healthy Lifestyle Score (HLS), with NAFLD. Design: A community-based cross-sectional study. Questionnaires and body assessments were used to collect data on the six-item HLS (ranging from 0 to 6, where higher scores indicate better health). The HLS consists of non-smoking (no active or passive smoking), normal BMI (18·5–23·9 kg/m2), physical activity (moderate or vigorous physical activity ≥ 150 min/week), healthy diet pattern, good sleep (no insomnia or <6 months) and no anxiety (Self-rating Anxiety Scale < 50), one point each. NAFLD was diagnosed by ultrasonography. Setting: Guangzhou, China. Participants: Two thousand nine hundred and eighty-one participants aged 40–75 years. Results: The overall prevalence of NAFLD was 50·8 %. After adjusting for potential covariates, HLS was associated with lower presence of NAFLD. The OR of NAFLD for subjects with higher HLS (3, 4, 5–6 v. 0–1 points) were 0·68 (95 % CI 0·51, 0·91), 0·58 (95 % CI 0·43, 0·78) and 0·35 (95 % CI 0·25, 0·51), respectively (P-values < 0·05). Among the six items, BMI and physical activity were the strongest contributors. Sensitivity analyses showed that the association was more significant after weighting the HLS. The beneficial association remained after excluding any one of the six components or replacing BMI with waist circumference. Conclusions: Higher HLS was associated with lower presence of NAFLD, suggesting that a healthy lifestyle pattern might be beneficial to liver health.

Food intake, physical activity and quality of life among children and youth

Work ◽  
2021 ◽  
pp. 1-10
Author(s):  
Emília Martins ◽  
Rosina Fernandes ◽  
Francisco Mendes ◽  
Cátia Magalhães ◽  
Patrícia Araújo
Keyword(s):  
Quality Of Life ◽  
Physical Activity ◽  
Healthy Lifestyle ◽  
Eating Habits ◽  
Age Groups ◽  
Related Quality ◽  
Health Related ◽  
Life Habits ◽  
Definition Of

BACKGROUND: The health-related quality of life construct (QoL) implies a relationship with eating habits (EA) and physical activity (PA). Sociodemographic and anthropometric variables (gender, age and Body Mass Index - BMI) are highlighted in the definition of healthy lifestyle habits promotion strategies. OBJECTIVE: We aim to characterize and relate PA, EA and QoL in children/youth and explore gender, age and BMI influences. METHODS: It is a non-experimental study, with 337 children/youth, ages between 8 and 17 years (12.61±2.96), mostly from the rural inland of Portugal. In data collection we used a sociodemographic and anthropometric questionnaire, a weekly register table of EA and Kid-Kindl (QoL). Statistical analysis (p <  0.05) were performed in SPSS-IBM 25. RESULTS: Lower BMI was associated with better EA (p <  0.001), PA (p <  0.05) and self-esteem (p <  0.01) and worse scores on family subscale of QoL. Female showed higher fruit intake (p <  0.05). The older has shown better results. PA is positively correlated with QoL (p <  0.01) and EA (p <  0.05). CONCLUSIONS: It is important to explore other relevant social and family dimensions, to promote intervention programs with parents, school and community, as well as healthy practices policies. The intervention in these age groups is critical for a longer-term impact in improving healthy life habits.

scholarly journals Ca2+ Microdomains, Calcineurin and the Regulation of Gene Transcription

Cells ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 875
Author(s):  
Gerald Thiel ◽  
Tobias Schmidt ◽  
Oliver G. Rössler
Keyword(s):  
Transcription Factors ◽  
Protein Kinase ◽  
Protein Kinases ◽  
Gene Transcription ◽  
Intracellular Signaling ◽  
Second Messengers ◽  
Major Function ◽  
Surface Receptors ◽  
Dependent Protein

Ca2+ ions function as second messengers regulating many intracellular events, including neurotransmitter release, exocytosis, muscle contraction, metabolism and gene transcription. Cells of a multicellular organism express a variety of cell-surface receptors and channels that trigger an increase of the intracellular Ca2+ concentration upon stimulation. The elevated Ca2+ concentration is not uniformly distributed within the cytoplasm but is organized in subcellular microdomains with high and low concentrations of Ca2+ at different locations in the cell. Ca2+ ions are stored and released by intracellular organelles that change the concentration and distribution of Ca2+ ions. A major function of the rise in intracellular Ca2+ is the change of the genetic expression pattern of the cell via the activation of Ca2+-responsive transcription factors. It has been proposed that Ca2+-responsive transcription factors are differently affected by a rise in cytoplasmic versus nuclear Ca2+. Moreover, it has been suggested that the mode of entry determines whether an influx of Ca2+ leads to the stimulation of gene transcription. A rise in cytoplasmic Ca2+ induces an intracellular signaling cascade, involving the activation of the Ca2+/calmodulin-dependent protein phosphatase calcineurin and various protein kinases (protein kinase C, extracellular signal-regulated protein kinase, Ca2+/calmodulin-dependent protein kinases). In this review article, we discuss the concept of gene regulation via elevated Ca2+ concentration in the cytoplasm and the nucleus, the role of Ca2+ entry and the role of enzymes as signal transducers. We give particular emphasis to the regulation of gene transcription by calcineurin, linking protein dephosphorylation with Ca2+ signaling and gene expression.

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