scholarly journals Destructive disinfection of infected brood prevents systemic disease spread in ant colonies

2017 ◽  
Author(s):  
Christopher D. Pull ◽  
Line V. Ugelvig ◽  
Florian Wiesenhofer ◽  
Simon Tragust ◽  
Thomas Schmitt ◽  
...  
Keyword(s):  
Infectious Disease ◽  
Systemic Disease ◽  
The Body ◽  
Disease Spread ◽  
Social Immunity ◽  
Ant Colonies ◽  
Infected Cells ◽  
Inside Out ◽  
Different Levels ◽  
Biological Organisation

AbstractSocial insects protect their colonies from infectious disease through collective defences that result in social immunity. In ants, workers first try to prevent infection of colony members. Here, we show that if this fails and a pathogen establishes an infection, ants employ an efficient multicomponent behaviour – “destructive disinfection” – to prevent further spread of disease through the colony. Ants specifically target infected pupae during the pathogen’s non-contagious incubation period, relying on chemical ‘sickness cues’ emitted by pupae. They then remove the pupal cocoon, perforate its cuticle and administer antimicrobial poison, which enters the body and prevents pathogen replication from the inside out. Like the immune system of a body that specifically targets and eliminates infected cells, this social immunity measure sacrifices infected brood to stop the pathogen completing its lifecycle, thus protecting the rest of the colony. Hence, the same principles of disease defence apply at different levels of biological organisation.

scholarly journals Destructive disinfection of infected brood prevents systemic disease spread in ant colonies

eLife ◽  
2018 ◽  
Vol 7 ◽  
Author(s):  
Christopher D Pull ◽  
Line V Ugelvig ◽  
Florian Wiesenhofer ◽  
Anna V Grasse ◽  
Simon Tragust ◽  
...  
Keyword(s):  
Fungal Infections ◽  
Systemic Disease ◽  
Disease Outbreaks ◽  
The Body ◽  
Disease Spread ◽  
Negative Consequences ◽  
Ant Colonies ◽  
Lasius Neglectus ◽  
Infected Cells ◽  
Inside Out

In social groups, infections have the potential to spread rapidly and cause disease outbreaks. Here, we show that in a social insect, the ant Lasius neglectus, the negative consequences of fungal infections (Metarhizium brunneum) can be mitigated by employing an efficient multicomponent behaviour, termed destructive disinfection, which prevents further spread of the disease through the colony. Ants specifically target infected pupae during the pathogen’s non-contagious incubation period, utilising chemical ‘sickness cues’ emitted by pupae. They then remove the pupal cocoon, perforate its cuticle and administer antimicrobial poison, which enters the body and prevents pathogen replication from the inside out. Like the immune system of a metazoan body that specifically targets and eliminates infected cells, ants destroy infected brood to stop the pathogen completing its lifecycle, thus protecting the rest of the colony. Hence, in an analogous fashion, the same principles of disease defence apply at different levels of biological organisation.

scholarly journals 3D mapping of disease in ant societies reveals a strategy of a specialized parasite

2014 ◽  
Author(s):  
Raquel G Loreto ◽  
Simon L Elliot ◽  
Mayara LR Freitas ◽  
Thairine M Pereira ◽  
David P Hughes
Keyword(s):  
Disease Spread ◽  
Social Immunity ◽  
Ant Colonies ◽  
Effective Strategies ◽  
Insect Societies ◽  
The Social ◽  
Disease Free ◽  
Ophiocordyceps Unilateralis ◽  
Disease Present

Despite the widely held position that the social insects have evolved effective ways to limit infectious disease spread, many pathogens and parasites do attack insect societies. Maintaining a disease-free nest environment is an important evolutionary feature, but since workers have to leave the nest to forage they are routinely exposed to disease. Here we show that despite effective social immunity, in which workers act collectively to reduce disease inside the nest, 100% of studied ant colonies of Camponotus rufipes in a Brazilian Rainforest were infected by the specialized fungal parasite Ophiocordyceps unilateralis s.l. Not only is disease present for all colonies but long-term dynamics over 20 months revealed disease is a permanent feature. Using 3D maps, we showed the parasite optimizes its transmission by controlling workers’ behavior to die on the doorstep of the colony, where susceptible foragers are predictable in time and space. Therefore, despite social immunity, specialized diseases of ants have evolved effective strategies to exploit insect societies.

scholarly journals Author response: Destructive disinfection of infected brood prevents systemic disease spread in ant colonies

2017 ◽  
Author(s):  
Christopher D Pull ◽  
Line V Ugelvig ◽  
Florian Wiesenhofer ◽  
Anna V Grasse ◽  
Simon Tragust ◽  
...  
Keyword(s):  
Systemic Disease ◽  
Disease Spread ◽  
Author Response ◽  
Ant Colonies

Fournier’s gangrene due to Salmonella Typhimurium in a healthy male: a rare aberrant infection

2020 ◽  
Vol 20 ◽  
Author(s):  
Varsha Gupta ◽  
Lipika Singhal ◽  
Kritika Pal ◽  
Mani Bhushan ◽  
Rajeev Sharma ◽  
...  
Keyword(s):  
Salmonella Typhimurium ◽  
Systemic Disease ◽  
External Genitalia ◽  
Fournier’S Gangrene ◽  
The Body ◽  
Healthy Male ◽  
Fournier's Gangrene ◽  
Salmonella Infections ◽  
Chief Complaints ◽  
Human Infections

Introduction: Human Salmonella infections have been classically distinguised into diseases caused by typhoidal and non-typhoidal salmonella (NTS). Typhiodal salmonella includes S. enterica serovars Typhi and Paratyphi that cause the systemic disease but are restricted to human infections, while NTS consists mainly of other serovars that predominantly cause self-limiting gastroenteritis in humans. Localisation of foci with persisting infection occurs due to dissemination of the bacteria throughout the body and can cause a variety of rare clinical syndromes at aberrant sites. Fournier’s gangrene, a rapidly progressive, often fatal, necrotizing fasciitis of the external genitalia and perineum due to Salmonella Typhimurium, is a rare manifestation and has never been reported. Case: A 22-year-old male, apparently healthy patient with no relevant past medical history presented to surgical emergency with chief complaints of swelling of bilateral scrotal area. Infective etiology was considered and a diagnosis of fournier’s gangrene was made. Pure growth of Salmonella Typhimurium was obtained after repeated subculture and was identified biochemically and on serotyping, as Salmonella enterica serotype Typhimurium using specific antisera. Conclusion: In our case report, we describe a case of fournier’s gangrene due to Salmonella Typhimurium in an otherwise healthy male to highlight the unusual presentation of Non typhoidal salmonellae at an aberrant site. We also emphasize the importance of using selective media like Selenite F broth for isolation of Salmonella Typhimurium from a pus sample.

Rebalance the oral microbiota as efficacy tool in endocrine, metabolic, and immune disorders

2020 ◽  
Vol 20 ◽  
Author(s):  
Ciro Gargiulo Isacco ◽  
Andrea Ballini ◽  
Danila De Vito ◽  
Kieu Cao Diem Nguyen ◽  
Stefania Cantore ◽  
...  
Keyword(s):  
Systemic Disease ◽  
Current Treatment ◽  
Oral Bacteria ◽  
The Body ◽  
Oral Microbiota ◽  
Oral Diseases ◽  
Philosophical Approach ◽  
Treatment And Prevention ◽  
Cardio Vascular Disease ◽  
Cardio Vascular

: The current treatment and prevention of oral disorders follow a very sectoral control and procedures considering mouth and its structures as system completely independent from the rest of the body. The main therapeutic approach is carried out on just to keep the levels of oral bacteria and hygiene in an acceptable range compatible with one-way vision of oral-mouth health completely separated from a systemic microbial homeostasis (eubiosis vs dysbiosis). This can negatively impact on the diagnosis of more complex systemic disease and its progression. Dysbiosis is consequence of oral and gut microbiota unbalance with consequences, as reported in current literature, in cardio vascular disease, diabetes mellitus, rheumatoid arthritis, and Alzheimer’s disease. Likewise, there is the need to highlight and develop a novel philosophical approach in the treatments for oral diseases that will necessarily involve non-conventional approaches.

Turnout in Multi-Level Systems

2017 ◽  
Author(s):  
Sona N. Golder ◽  
Ignacio Lago ◽  
André Blais ◽  
Elisabeth Gidengil ◽  
Thomas Gschwend
Keyword(s):  
National Level ◽  
The Body ◽  
Political Community ◽  
The Political ◽  
European Level ◽  
National Elections ◽  
Political Issues ◽  
European Elections ◽  
Multi Level ◽  
Different Levels

Voters face different incentives to turn out to vote in one electoral arena versus another. Although turnout is lowest in European elections, it is found that the turnout is only slightly lower in regional than in national elections. Standard accounts suggest that the importance of an election, in terms of the policy-making power of the body to be elected, drives variation in turnout across elections at different levels. This chapter argues that this is only part of the story, and that voter attachment to a particular level also matters. Not all voters feel connected to each electoral arena in the same way. Although for some, their identity and the issues they most care about are linked to politics at the national level, for others, the regional or European level may offer the political community and political issues that most resonate with them.

Situating embodied instruction – proxemics and body knowledge

2021 ◽  
Vol 7 (s4) ◽  
Author(s):  
Darren James Reed
Keyword(s):  
The Body ◽  
Public Display ◽  
Intimate Contact ◽  
Dance Class ◽  
Performance Training ◽  
Playing Field ◽  
Close Analysis ◽  
Spoken Interaction ◽  
Different Levels ◽  
Body Knowledge

Abstract In various ways the movement and experience of the body is instructed by others. This may be in the dance class or on the playing field. In these interactions, one person claims knowledge of the other’s body and rights to instruct how that body functions, moves, and feels. By undertaking a close analysis of embodied and spoken interaction within performance training sessions from a multimodal conversation analytic perspective, this paper will identify one kind of broad sequential trajectory – from intimate contact to public display - that shows how an instructor claims rights over the internal workings of another’s body by traversing different levels of proximity and sensorial modalities.

Embodying the culture of achievement: Culture between illness and perfection is a ‘thin line’ – obtaining the ideal female body as an act of achievement

2021 ◽  
pp. 1354067X2110040
Author(s):  
Josefine Dilling ◽  
Anders Petersen
Keyword(s):  
Experimental Study ◽  
Human Body ◽  
Female Body ◽  
The Body ◽  
Thin Line ◽  
Complex Processes ◽  
The Individual ◽  
Different Levels ◽  
The Ideal ◽  
Body Ideals

In this article, we argue that certain behaviour connected to the attempt to attain contemporary female body ideals in Denmark can be understood as an act of achievement and, thus, as an embodiment of the culture of achievement, as it is characterised in Præstationssamfundet, written by the Danish sociologist Anders Petersen (2016) Hans Reitzels Forlag . Arguing from cultural psychological and sociological standpoints, this article examines how the human body functions as a mediational tool in different ways from which the individual communicates both moral and aesthetic sociocultural ideals and values. Complex processes of embodiment, we argue, can be described with different levels of internalisation, externalisation and materialisation, where the body functions as a central mediator. Analysing the findings from a qualitative experimental study on contemporary body ideals carried out by the Danish psychologists Josefine Dilling and Maja Trillingsgaard, this article seeks to anchor such theoretical claims in central empirical findings. The main conclusions from the study are used to structure the article and build arguments on how expectations and ideals expressed in an achievement society become embodied.

scholarly journals Evolution of Marine Organisms under Climate Change at Different Levels of Biological Organisation

Water ◽  
2014 ◽  
Vol 6 (11) ◽  
pp. 3545-3574 ◽  
Author(s):  
Ben Harvey ◽  
Balsam Al-Janabi ◽  
Stefanie Broszeit ◽  
Rebekah Cioffi ◽  
Amit Kumar ◽  
...  
Keyword(s):  
Climate Change ◽  
Marine Organisms ◽  
Different Levels ◽  
Biological Organisation
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