• Title/Summary/Keyword: Population regulation

검색결과 281건 처리시간 0.02초

Autophagy and Digestive Disorders: Advances in Understanding and Therapeutic Approaches

  • Thein, Wynn;Po, Wah Wah;Choi, Won Seok;Sohn, Uy Dong
    • Biomolecules & Therapeutics
    • /
    • 제29권4호
    • /
    • pp.353-364
    • /
    • 2021
  • The gastrointestinal (GI) tract is a series of hollow organs that is responsible for the digestion and absorption of ingested foods and the excretion of waste. Any changes in the GI tract can lead to GI disorders. GI disorders are highly prevalent in the population and account for substantial morbidity, mortality, and healthcare utilization. GI disorders can be functional, or organic with structural changes. Functional GI disorders include functional dyspepsia and irritable bowel syndrome. Organic GI disorders include inflammation of the GI tract due to chronic infection, drugs, trauma, and other causes. Recent studies have highlighted a new explanatory mechanism for GI disorders. It has been suggested that autophagy, an intracellular homeostatic mechanism, also plays an important role in the pathogenesis of GI disorders. Autophagy has three primary forms: macroautophagy, microautophagy, and chaperone-mediated autophagy. It may affect intestinal homeostasis, host defense against intestinal pathogens, regulation of the gut microbiota, and innate and adaptive immunity. Drugs targeting autophagy could, therefore, have therapeutic potential for treating GI disorders. In this review, we provide an overview of current understanding regarding the evidence for autophagy in GI diseases and updates on potential treatments, including drugs and complementary and alternative medicines.

Effects of exercise training on the biochemical pathways associated with sarcopenia

  • Seo, Dae Yun;Hwang, Boo Geun
    • 운동영양학회지
    • /
    • 제24권3호
    • /
    • pp.32-38
    • /
    • 2020
  • [Purpose] Sarcopenia is considered one of the major causes of disability in the elderly population and is highly associated with aging. Exercise is an essential strategy for improving muscle health while aging and involves multiple metabolic and transcriptional adaptations. Although the beneficial effects of exercise modalities on skeletal muscle structure and function in aging are well recognized, the exact cellular and molecular mechanisms underlying the influence of exercise have not been fully elucidated. [Methods] We summarize the biochemical pathways involved in the progression and pathogenesis of sarcopenia and describe the beneficial effects of exercise training on the relevant signaling pathways associated with sarcopenia. [Results] This study briefly introduces current knowledge on the signaling pathways involved in the development of sarcopenia, effects of aerobic exercise on mitochondria-related parameters and mitochondrial function, and role of resistance exercise in the regulation of muscle protein synthesis against sarcopenia. [Conclusion] This review suggested that the beneficial effects of exercise are still under-explored, and accelerated research will help develop better modalities for the prevention, management, and treatment of sarcopenia.

Food Security through Smart Agriculture and the Internet of Things

  • Alotaibi, Sara Jeza
    • International Journal of Computer Science & Network Security
    • /
    • 제22권11호
    • /
    • pp.33-42
    • /
    • 2022
  • One of the most pressing socioeconomic problems confronting humanity on a worldwide scale is food security, particularly in light of the expanding population and declining land productivity. These causes have increased the number of people in the world who are at risk of starving and have caused the natural ecosystems to degrade at previously unheard-of speeds. Happily, the Internet of Things (IoT) development provides a glimmer of light for those worried about food security through smart agriculture-a development that is particularly relevant to automating food production operations in order to reduce labor expenses. When compared to conventional farming techniques, smart agriculture has the benefit of maximizing resource use through precise chemical input application and regulation of environmental factors like temperature and humidity. Farmers may make data-driven choices about the possibility of insect invasion, natural disasters, anticipated yields, and even prospective market shifts with the use of smart farming tools. The technical foundation of smart agriculture serves as a potential response to worries about food security. It is made up of wireless sensor networks and integrated cloud computing modules inside IoT.

운영 데이터를 활용한 제3자 물류 환경에서의 배송 트럭 무게 예측 (Truck Weight Estimation using Operational Statistics at 3rd Party Logistics Environment)

  • 이유진;최경민;김송은;박경수;정승환
    • 산업경영시스템학회지
    • /
    • 제45권4호
    • /
    • pp.127-133
    • /
    • 2022
  • Many manufacturers applying third party logistics (3PLs) have some challenges to increase their logistics efficiency. This study introduces an effort to estimate the weight of the delivery trucks provided by 3PL providers, which allows the manufacturer to package and load products in trailers in advance to reduce delivery time. The accuracy of the weigh estimation is more important due to the total weight regulation. This study uses not only the data from the company but also many general prediction variables such as weather, oil prices and population of destinations. In addition, operational statistics variables are developed to indicate the availabilities of the trucks in a specific weight category for each 3PL provider. The prediction model using XGBoost regressor and permutation feature importance method provides highly acceptable performance with MAPE of 2.785% and shows the effectiveness of the developed operational statistics variables.

Distribution Financial Performance of Corporate as an Impact of Green Accounting Regulation

  • Dwi ORBANINGSIH
    • 유통과학연구
    • /
    • 제21권10호
    • /
    • pp.77-84
    • /
    • 2023
  • Purpose: This study aims to determine the impact of green accounting on the distribution of company financial performance. Green Accounting is seen as an accounting approach that considers the environmental impact of business activities and the distribution of financial performance which is expected to provide great benefits to the company. Research Design Data and Methodology: The population of this study is 168 manufacturing companies listed on the Indonesia Stock Exchange from 2018 to 2020. The research theory uses the Legitimacy Theory and the Shareholder Theory. Research data were analyzed using multiple regression models with purposive sampling. Green Accounting in this study uses environmental cost proxies using Return on Capital Employed (ROCE). Financial performance uses the Return on Equity (ROE) proxy. Results: research shows that the influence of green accounting can provide important input to operational managers in manufacturing companies in making decisions regarding environmental costs and environmental protection that will provide economic benefits for the company. In addition, these findings also clarify the great benefits of green accounting policies for a company's production process. Conclusion: Green Accounting has a long-term impact through the company's financial performance. Green Accounting can be the basis for companies in deciding whether to invest or not.

User Responses Towards Information Distribution of Copyright Law No. 28 of 2014 Concerning Permits for Commercial Use of Music Performing Rights

  • MUHIDIASTU, Naufal;MANI, La;RASYID, Fariz Ubaidillah;ZHAFIRAH, Hanan;ARAS, Muhammad
    • 유통과학연구
    • /
    • 제20권1호
    • /
    • pp.55-65
    • /
    • 2022
  • Purpose: This article discusses public acceptance in the information distribution of Copyright Law no. 28 of 2014 and Government Regulation No. 56 of 2021 in Indonesia concerning the commercial use of music. Hospitality industry is one of the most affected by this regulations, which some hotelsrefused to comply. To get royalties, LMKN approaches with socialization either directly or indirectly to commercial music users. Research design, data and methodology: Quantitative survey by distributing questionnaires, then testing the validity and reliability tests using the SmartPLS application. The population studied were Hotels on Java and Bali Island in Indonesia. The research sample is 100 hotels. Result: R-Square value of 0.706 for the construct (Y) User Response which means that (X) Socialization can explain the variance (Y) User Response of 70.3%. This shows that the level of influence (X) Socialization has an effect on (Y) User Response. Conclusion: User responses regarding the distribution information of the Act indicate the need for socialization, because socialization provides literacy to the public. More frequent socialization will provide a good opportunity to increase the response of commercial music users.

Microbial Components and Effector Molecules in T Helper Cell Differentiation and Function

  • Changhon Lee;Haena Lee;John Chulhoon Park;Sin-Hyeog Im
    • IMMUNE NETWORK
    • /
    • 제23권1호
    • /
    • pp.7.1-7.27
    • /
    • 2023
  • The mammalian intestines harbor trillions of commensal microorganisms composed of thousands of species that are collectively called gut microbiota. Among the microbiota, bacteria are the predominant microorganism, with viruses, protozoa, and fungi (mycobiota) making up a relatively smaller population. The microbial communities play fundamental roles in the maturation and orchestration of the immune landscape in health and disease. Primarily, the gut microbiota modulates the immune system to maintain homeostasis and plays a crucial role in regulating the pathogenesis and pathophysiology of inflammatory, neuronal, and metabolic disorders. The microbiota modulates the host immune system through direct interactions with immune cells or indirect mechanisms such as producing short-chain acids and diverse metabolites. Numerous researchers have put extensive efforts into investigating the role of microbes in immune regulation, discovering novel immunomodulatory microbial species, identifying key effector molecules, and demonstrating how microbes and their key effector molecules mechanistically impact the host immune system. Consequently, recent studies suggest that several microbial species and their immunomodulatory molecules have therapeutic applicability in preclinical settings of multiple disorders. Nonetheless, it is still unclear why and how a handful of microorganisms and their key molecules affect the host immunity in diverse diseases. This review mainly discusses the role of microbes and their metabolites in T helper cell differentiation, immunomodulatory function, and their modes of action.

Woody Plant Species Composition, Population Structure and Carbon Sequestration Potential of the A. senegal (L.) Willd Woodland Along a Distance Gradient in North-Western Tigray, Ethiopia

  • Birhane, Emiru;Gebreslassie, Hafte;Giday, Kidane;Teweldebirhan, Sarah;Hadgu, Kiros Meles
    • Journal of Forest and Environmental Science
    • /
    • 제36권2호
    • /
    • pp.91-112
    • /
    • 2020
  • In Ethiopia, dry land vegetation including the fairly intact lowland and western escarpment woodlands occupy the largest vegetation resource of the country. These forests play a central role in environmental regulation and socio-economic assets, yet they received less scientific attention than the moist forests. This study evaluated the woody plant species composition, population structure and carbon sequestration potential of the A. senegal woodland across three distance gradients from the settlements. A total of 45 sample quadrants were laid along a systematically established nine parallel transect lines to collect vegetation and soil data across distance gradients from settlement. Mature tree dry biomass with DBH>2.5 cm was estimated using allometric equations. A total of 41 woody plant species that belong to 20 families were recorded and A. senegal was the dominant species with 56.4 IVI value. Woody plant species diversity, density and richness were significantly higher in the distant plots compared to the nearest plots to settlement (p<0.05). The cumulative DBH class distribution of all individuals had showed an interrupted inverted J-shape population pattern. There were 19 species without seedlings, 15 species without saplings and 14 species without both seedlings and saplings. A significant above ground carbon (5.3 to 12.7 ton ha-1), root carbon (1.6 to 3.6 ton ha-1), soil organic carbon (35.6 to 44.5 ton ha-1), total carbon stock (42.5 to 60.7 ton ha-1) and total carbon dioxide equivalent (157.7 to 222.8 ton ha-1) was observed consistently with an increasing of distance from settlement (p<0.05). Distance from settlement had significant and positive correlation with species diversity and carbon stock at 0.64⁎⁎ and 0.78⁎⁎. Disturbance intensity may directly influence the variation of species composition, richness and density along the A. senegal woodland. The sustainability of the A. senegal woodland needs urgent protection, conservation and restoration.

Interaction Effects of Lipoprotein Lipase Polymorphisms with Lifestyle on Lipid Levels in a Korean Population: A Cross-sectional Study

  • Pyun, Jung-A;Kim, Sun-Shin;Park, Kyung-Chae;Baik, In-Kyung;Cho, Nam-H.;Koh, In-Song;Lee, Jong-Young;Cho, Yoon-Shin;Kim, Young-Jin;Go, Min-Jin;Shim, Eu-Gene;Kwack, Kyu-Bum;Shin, Chol
    • Genomics & Informatics
    • /
    • 제10권2호
    • /
    • pp.88-98
    • /
    • 2012
  • Lipoprotein lipase (LPL) plays an essential role in the regulation of high-density lipoprotein cholesterol (HDLC) and triglyceride levels, which have been closely associated with cardiovascular diseases. Genetic studies in European have shown that LPL single-nucleotide polymorphisms (SNPs) are strongly associated with lipid levels. However, studies about the influence of interactions between LPL SNPs and lifestyle factors have not been sufficiently performed. Here, we examine if LPL polymorphisms, as well as their interaction with lifestyle factors, influence lipid concentrations in a Korean population. A two-stage association study was performed using genotype data for SNPs on the LPL gene, including the 3' flanking region from 7,536 (stage 1) and 3,703 (stage 2) individuals. The association study showed that 15 SNPs and 4 haplotypes were strongly associated with HDLC (lowest $p=2.86{\times}10^{-22}$) and triglyceride levels (lowest $p=3.0{\times}10^{-15}$). Interactions between LPL polymorphisms and lifestyle factors (lowest $p=9.6{\times}10^{-4}$) were also observed on lipid concentrations. These findings suggest that there are interaction effects of LPL polymorphisms with lifestyle variables, including energy intake, fat intake, smoking, and alcohol consumption, as well as effects of LPL polymorphisms themselves, on lipid concentrations in a Korean population.

소규모 다중이용시설의 실내공기질 실태조사 및 건강위해성평가: 민감군 이용시설을 중심으로 (Indoor Air Quality and Human Health Risk Assessment for Un-regulated Small-sized Sensitive Population Facilities)

  • 신혜진;박우상;김보경;지경희;김기태
    • 한국환경보건학회지
    • /
    • 제44권4호
    • /
    • pp.397-407
    • /
    • 2018
  • Objectives: The purpose of this study is to investigate human health risk assessment of indoor air pollutants at small-sized public-use facilities (e.g., daycare centers, hospital and elderly care facilities) that the susceptible population is mainly used. Methods: To assess indoor air quality (IAQ), the concentrations of indoor air contaminants such as HCHO, benzene, toluene, ethylbenzene, xylene, styrene, PM-10, CO, $NO_2$ and $O_3$ in air samples were measured according to the Indoor Air Quality Standard Method. By conducting the questionnaire survey, the major factors influencing IAQ were identified. Human health risk assessment was carried out in the consideration of type of use (user and worker) at 75 daycare centers, 34 hospitals and 40 elderly care facilities. Results: As a result of measurement of indoor air contaminants, the average concentration of HCHO and TVOCs in hospitals was higher than daycare centers and elderly care facilities, about 8.8 and 23.5% of hospitals were exceeded by IAQ standard. In human health risk assessment, for the user of daycare centers and elderly care facilities, the mean carcinogenic risk of HCHO inhalation was higher than acceptable value. Except for HCHO, other values were determined under acceptable risk. Similarly, for the worker of hospitals, the mean carcinogenic risk of HCHO inhalation was higher than acceptable value and other values were evaluated under acceptable risk. In contrast, the risk levels of other contaminants measured in elderly care facilities were acceptable. In the determination of factors influencing IAQ, the construction year, building type, ventilation time, and the use of air cleaner were identified. Conclusions: This study provides the information for establishing the plans of public health management of IAQ at small-sized public-use facilities that have not yet been placed under the regulation. The findings suggest the consideration of human health risk assessment results for the IAQ standards.