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Guo W, Liu S, Khan MZ, Wang J, Chen T, Alugongo GM, Li S, Cao Z. Bovine milk microbiota: Key players, origins, and potential contributions to early-life gut development. J Adv Res 2024; 59:49-64. [PMID: 37423549 DOI: 10.1016/j.jare.2023.06.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/27/2023] [Accepted: 06/27/2023] [Indexed: 07/11/2023] Open
Abstract
BACKGROUND Bovine milk is a significant substitute for human breast milk and holds great importance in infant nutrition and health. Apart from essential nutrients, bovine milk also contains bioactive compounds, including a microbiota derived from milk itself rather than external sources of contamination. AIM OF REVIEW Recognizing the profound impact of bovine milk microorganisms on future generations, our review focuses on exploring their composition, origins, functions, and applications. KEY SCIENTIFIC CONCEPTS OF REVIEW Some of the primary microorganisms found in bovine milk are also present in human milk. These microorganisms are likely transferred to the mammary gland through two pathways: the entero-mammary pathway and the rumen-mammary pathway. We also elucidated potential mechanisms by which milk microbiota contribute to infant intestinal development. The mechanisms include the enhancing of the intestinal microecological niche, promoting the maturation of immune system, strengthening the intestinal epithelial barrier function, and interacting with milk components (e.g., oligosaccharides) via cross-feeding effect. However, given the limited understanding of bovine milk microbiota, further studies are necessary to validate hypotheses regarding their origins and to explore their functions and potential applications in early intestinal development.
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Affiliation(s)
- Wenli Guo
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Shuai Liu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Muhammad Z Khan
- Faculty of Veterinary and Animal Sciences, Department of Animal Breeding and Genetics, The University of Agriculture, Dera Ismail Khan 29220, Pakistan
| | - Jingjun Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Tianyu Chen
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Gibson M Alugongo
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Shengli Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Zhijun Cao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
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Chmura P, Kołodziejczyk M, Andrzejewski M, Chmura J, Rokita A, Drożdżowski A, Maćkała K, Konefał M. In which rounds were the most rotations of key players made, and how did this affect physical activity? Analysis of the eight best teams of the 2018 FIFA world cup Russia. BMC Sports Sci Med Rehabil 2024; 16:49. [PMID: 38360783 PMCID: PMC10870587 DOI: 10.1186/s13102-024-00834-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 01/29/2024] [Indexed: 02/17/2024]
Abstract
BACKGROUND Team management, especially player selection, rotation, and availability, are critical issues when dealing with the high demands of modern training and gameplay. As such, research continuously seeks ways to improve these actions or implement new ideas to gain a competitive advantage through the rotation of players in the starting line-up. The current study aimed to examine the rounds of the 2018 FIFA World Cup Russia in which the most rotations of key players were made and how this affected physical activity. METHODS The sample consisted of 110 players from the top eight teams in the 2018 World Cup Russia who played entire matches for up to 90 min in seven consecutive games. All players were divided into key players (KPs, n = 58) and non-key players (NKPs, n = 52). The analysis used data collected by an advanced motion analysis system known as STATS®, with physical activity variables analyzed, including total distance covered (TDC), distance covered with high intensity over 20 km/h (HIR), and the number of sprints undertaken. In statistical analysis, differences between categories and consecutive matches were calculated using the Kruskal-Wallis H test, and if a significant effect size was found, a multiple comparisons p values test was performed. RESULTS The best teams at the 2018 FIFA World Cup Russia used the most KP rotations with NKPs in the third match of the group stage. In addition, this was even more visible among more successful teams than less successful teams. The rotation strategy among the best eight teams allowed them to maintain the physical activity of KPs and NKPs in all rounds of the tournament. CONCLUSIONS Coaches and coaching staff should incorporate squad rotation that includes a large group of players in their team management to improve their success. Team management expertise in player rotation during matches played over congested schedules at top tournaments maintains high levels of physical activity indicators (TDC, HIR, and sprints).
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Affiliation(s)
- Paweł Chmura
- Department of Team Games, Wroclaw University of Health and Sport Sciences , I.J. Paderewskiego 35, 51612, Wrocław, Poland
| | - Michał Kołodziejczyk
- Department of Team Games, Wroclaw University of Health and Sport Sciences , I.J. Paderewskiego 35, 51612, Wrocław, Poland
| | - Marcin Andrzejewski
- Department of Methodology of Recreation, Poznań University of Physical Education, Królowej Jadwigi 27/39, 61871, Poznań, Poland
| | - Jan Chmura
- Department of Human Motor Skills, Wroclaw University of Health and Sport Sciences , I.J. Paderewskiego 35, 51612, Wrocław, Poland
| | - Andrzej Rokita
- Department of Team Games, Wroclaw University of Health and Sport Sciences , I.J. Paderewskiego 35, 51612, Wrocław, Poland
| | - Adrian Drożdżowski
- Department of Team Games, Wroclaw University of Health and Sport Sciences , I.J. Paderewskiego 35, 51612, Wrocław, Poland.
| | - Krzysztof Maćkała
- Department of Track and Field, Wroclaw University of Health and Sport Sciences , I.J. Paderewskiego 35, 51612, Wrocław, Poland
| | - Marek Konefał
- Department of Human Motor Skills, Wroclaw University of Health and Sport Sciences , I.J. Paderewskiego 35, 51612, Wrocław, Poland
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Julliard C, Shi R, Yuan K. The spread of COVID-19 in London: Network effects and optimal lockdowns. J Econom 2023; 235:2125-2154. [PMID: 37323825 PMCID: PMC10184951 DOI: 10.1016/j.jeconom.2023.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/28/2022] [Accepted: 02/03/2023] [Indexed: 06/17/2023]
Abstract
We generalise a stochastic version of the workhorse SIR (Susceptible-Infectious-Removed) epidemiological model to account for spatial dynamics generated by network interactions. Using the London metropolitan area as a salient case study, we show that commuter network externalities account for about 42% of the propagation of COVID-19. We find that the UK lockdown measure reduced total propagation by 44%, with more than one third of the effect coming from the reduction in network externalities. Counterfactual analyses suggest that: (i) the lockdown was somehow late, but further delay would have had more extreme consequences; (ii) a targeted lockdown of a small number of highly connected geographic regions would have been equally effective, arguably with significantly lower economic costs; (iii) targeted lockdowns based on threshold number of cases are not effective, since they fail to account for network externalities.
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Affiliation(s)
- Christian Julliard
- Department of Finance, FMG, and SRC, London School of Economics, WC2A 2AE, London, UK
- CEPR, UK
| | - Ran Shi
- Department of Finance, University of Colorado Boulder, 995 Regent Dr, Boulder, CO 80305, USA
| | - Kathy Yuan
- Department of Finance, FMG, and SRC, London School of Economics, WC2A 2AE, London, UK
- CEPR, UK
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Mélard N, Grard A, Delvenne JC, Mercken L, Perelman J, Kunst AE, Lorant V. The Diffusion of Smoking: Association Between School Tobacco Policies and the Diffusion of Adolescent Smoking in 38 Schools in 6 Countries. Prev Sci 2023; 24:752-764. [PMID: 36652097 DOI: 10.1007/s11121-022-01486-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2022] [Indexed: 01/19/2023]
Abstract
Social network research has evidenced the role of peer effects in the adoption of behaviours. Little is known, however, about whether policies affect how behaviours are shared in a network. To contribute to this literature, we apply the concept of diffusion centrality to school tobacco policies and adolescent smoking. Diffusion centrality is a measure of centrality which refers to a person's ability to diffuse a given property-in our case, smoking-related behaviours. We hypothesized that stronger school tobacco policies are associated with less diffusion centrality of smoking on school premises and of smoking in general. A whole network study was carried out in 2013 and 2016 among adolescents (n = 18,805) in 38 schools located in six European cities. Overall, diffusion centrality of smoking in general and of smoking on school premises significantly decreased over time. Diffusion centrality of smoking significantly decreased both in schools where the policy strengthened or softened over time, but for diffusion of smoking on school premises, this decrease was only significant in schools where it strengthened. Finally, stronger school tobacco policies were associated with lower diffusion centrality of smoking on school premises and of smoking in general, though to a lesser extent. With such policies, smoking may, therefore, become less prevalent, less popular, and less clustered, thereby lowering the risk of it spreading within networks in, and even outside the school.
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Affiliation(s)
- Nora Mélard
- Institute of Health and Society (IRSS), Université catholique de Louvain, Brussels, Belgium.
| | - Adeline Grard
- Institute of Health and Society (IRSS), Université catholique de Louvain, Brussels, Belgium
| | - Jean-Charles Delvenne
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics, Université catholique de Louvain, Louvain-La-Neuve, Belgium
| | - Liesbeth Mercken
- Department of Health Psychology, Open University, Heerlen, the Netherlands
| | - Julian Perelman
- NOVA National School of Public Health, Public Health Research Centre, Comprehensive Health Research Center, CHRC, NOVA University Lisbon, Lisbon, Portugal
| | - Anton E Kunst
- Department of Public and Occupational Health, Amsterdam Public Health Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Vincent Lorant
- Institute of Health and Society (IRSS), Université catholique de Louvain, Brussels, Belgium
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Bohnett E, Vacca R, Hu Y, Hulse D, Varda D. Resilience and fragmentation in healthcare coalitions: The link between resource contributions and centrality in health-related interorganizational networks. Soc Networks 2022; 71:87-95. [PMID: 36060606 PMCID: PMC9420007 DOI: 10.1016/j.socnet.2022.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 05/17/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Interorganizational coalitions or collaboratives in healthcare are essential to address the health challenges of local communities, particularly during crises such as the Covid-19 pandemic. However, few studies use large-scale data to systematically assess the network structure of these collaboratives and understand their potential to be resilient or fragment in the face of structural changes. This paper analyzes data collected in 2009-2017 about 817 organizations (nodes) in 42 healthcare collaboratives (networks) throughout Florida, the third-largest U.S. state by population, including information about interorganizational ties and organizations' resource contributions to their coalitions. Social network methods are used to characterize the resilience of these collaboratives, including identification of key players through various centrality metrics, analyses of fragmentation centrality and core/periphery structure, and Exponential Random Graph Models to examine how resource contributions facilitate interorganizational ties. Results show that the most significant resource contributions are made by key players identified through fragmentation centrality and by members of the network core. Departure or removal of these organizations would both strongly disrupt network structure and sever essential resource contributions, undermining the overall resilience of a collaborative. Furthermore, one-third of collaboratives are highly susceptible to disruption if any fragmentation-central organization is removed. More fragmented networks are also associated with poorer health-system outcomes in domains such as education, health policy, and services. ERGMs reveal that two types of resource contributions - community connections and in-kind resource sharing - are especially important to facilitate the formation of interorganizational ties in these coalitions.
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Affiliation(s)
- Eve Bohnett
- Department of Landscape Architecture, University of Florida, Gainesville, USA
- Florida Institute for Built Environment Resilience, University of Florida, Gainesville, USA
| | - Raffaele Vacca
- Department of Social and Political Sciences, University of Milan, Italy
| | - Yujie Hu
- Department of Geography, University of Florida, Gainesville, USA
| | - David Hulse
- Department of Landscape Architecture, University of Florida, Gainesville, USA
- Florida Institute for Built Environment Resilience, University of Florida, Gainesville, USA
| | - Danielle Varda
- Department of Health Systems, Management and Policy, University of Colorado, Denver, USA
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Winter JR, Green LE. Quantifying the beliefs of key players in the UK sheep industry on the efficacy of two treatments for footrot. Vet J 2018; 239:15-20. [PMID: 30197104 PMCID: PMC6143487 DOI: 10.1016/j.tvjl.2018.07.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 07/15/2018] [Accepted: 07/18/2018] [Indexed: 11/01/2022]
Abstract
Clinical trials have demonstrated that sheep with footrot treated with parenteral and topical antibiotics without foot trimming (treatment A), cure faster than sheep treated with foot trimming and topical antibiotics (treatment B). We investigated how key players in the UK sheep industry recommended treating footrot, and tested whether reviewing the evidence surrounding treatment of footrot changed their beliefs. Eight key players attended a workshop to investigate their current practices, and their perceived efficacy of treatments, using probabilistic elicitation. At the start of the study, all participants recommended use of antibiotic injection but only four recommended not foot trimming feet with footrot. Initial beliefs in the difference in cure rate within five days of treatment ranged from 30 to 97% in favour of treatment A (true difference 60%); this heterogeneity reduced after reviewing the evidence. Participants who believed the cure rate differed by >60% over-estimated the cure rate of treatment A whilst participants who believed the difference was <60% over-estimated the efficacy of treatment B. During discussions, participants stated that parenteral antibiotics had always been recommended as a treatment for footrot but that the new research clarified when to use them. In contrast, it was highly novel to hear that foot trimming was detrimental to recovery, and key players and farmers are taking longer to accept this evidence. Three months after the workshop, two participants stated that they now placed greater emphasis on rapid individual antibiotic treatment of lame sheep and one was no longer recommending trimming feet.
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Affiliation(s)
- J R Winter
- School of Life Sciences, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - L E Green
- School of Life Sciences, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
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