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Artikel: Food availability leads to more connected contact networks among peridomestic zoonotic reservoir hosts.

Kuenzi, Amy J / Luis, Angela D

2023 Band 10, Heft 11, Seite(n) 230809

Abstract: The North American deermouse ( ...

Abstract	The North American deermouse (
Sprache	Englisch
Erscheinungsdatum	2023-11-15
Erscheinungsland	England
Dokumenttyp	Journal Article
ZDB-ID	2787755-3
ISSN	2054-5703
ISSN	2054-5703
DOI	10.1098/rsos.230809
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Artikel ; Online: Food availability leads to more connected contact networks among peridomestic zoonotic reservoir hosts

Amy J. Kuenzi / Angela D. Luis

Royal Society Open Science, Vol 10, Iss

2023 Band 11

Abstract: The North American deermouse (Peromyscus maniculatus) is a reservoir host for many zoonotic pathogens. Deermice have been well studied, but few studies have attempted to understand social interactions within the species despite these interactions being ... ...

Abstract	The North American deermouse (Peromyscus maniculatus) is a reservoir host for many zoonotic pathogens. Deermice have been well studied, but few studies have attempted to understand social interactions within the species despite these interactions being key to understanding disease transmission. We performed an experiment to determine if supplemental food or nesting material affected social interactions of deermice and tested if interactions increased with increasing population density. We constructed three simulated buildings that received one of three treatments: food, nesting material, or control. Mice were tagged with passive integrated transponder (PIT) tags, and their movement in and out of buildings was monitored with PIT tag readers. PIT tag readings were used to create contact networks, assuming a contact if two deermice were in the same building at the same time. We found that buildings with food led to contact networks that were approximately 10 times more connected than buildings with nesting material or control buildings. We also saw a significant effect of population density on the average number of contacts per individual. These results suggest that food supplementation which is common in peridomestic settings, can significantly increase contacts between reservoir hosts, potentially leading to increased transmission of zoonotic viruses within the reservoir host and from reservoir hosts to humans.
Schlagwörter	social network analysis ; supplemental feeding ; resource provisioning ; Peromyscus maniculatus ; disease transmission ; Science ; Q
Thema/Rubrik (Code)	590
Sprache	Englisch
Erscheinungsdatum	2023-11-01T00:00:00Z
Verlag	The Royal Society
Dokumenttyp	Artikel ; Online
Datenquelle	BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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Artikel ; Online: Leukocyte Evaluation of the Free-Ranging Deermouse (

Eleftheriou, Andreas / Luis, Angela D

Journal of wildlife diseases

2020 Band 56, Heft 3, Seite(n) 717–720

Abstract: We generated reference ranges for seasonal leukocyte differential counts of the free-ranging deermouse ( ...

Abstract	We generated reference ranges for seasonal leukocyte differential counts of the free-ranging deermouse (
Mesh-Begriff(e)	Animals ; Animals, Wild ; Female ; Leukocyte Count/veterinary ; Male ; Montana ; Peromyscus/blood ; Reference Values ; Seasons
Sprache	Englisch
Erscheinungsdatum	2020-02-13
Erscheinungsland	United States
Dokumenttyp	Letter ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
ZDB-ID	410709-3
ISSN	1943-3700 ; 0090-3558
ISSN (online)	1943-3700
ISSN	0090-3558
DOI	10.7589/2019-04-104
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Artikel: Virulence Factors in Coagulase-Negative Staphylococci.

França, Angela / Gaio, Vânia / Lopes, Nathalie / Melo, Luís D R

Pathogens (Basel, Switzerland)

2021 Band 10, Heft 2

Abstract: Coagulase-negative staphylococci (CoNS) have emerged as major pathogens in healthcare-associated facilities, ... ...

Abstract	Coagulase-negative staphylococci (CoNS) have emerged as major pathogens in healthcare-associated facilities, being
Sprache	Englisch
Erscheinungsdatum	2021-02-04
Erscheinungsland	Switzerland
Dokumenttyp	Journal Article ; Review
ZDB-ID	2695572-6
ISSN	2076-0817
ISSN	2076-0817
DOI	10.3390/pathogens10020170
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Artikel ; Online: Physiological links with behavior and fitness: The acute adrenocortical response predicts trappability but not survival in male and female deermice.

Eleftheriou, Andreas / Williams, Sara H / Luis, Angela D

Hormones and behavior

2022 Band 143, Seite(n) 105183

Abstract: The "Cort-Fitness" hypothesis predicts a negative relationship between baseline glucocorticoids (GCs) and fitness, although evidence for this hypothesis remains mixed. Such ambiguity could partially exist because blood GCs, typically used in field ... ...

Abstract	The "Cort-Fitness" hypothesis predicts a negative relationship between baseline glucocorticoids (GCs) and fitness, although evidence for this hypothesis remains mixed. Such ambiguity could partially exist because blood GCs, typically used in field studies, can fluctuate too rapidly to measure accurately, while the relationship between GCs and trappability is often neglected. Here, by addressing these factors, we examined relationships between GC measures and survival of North American deermice (Peromyscus maniculatus; hereafter deermice) as a model system. To do this, we used more stable GC measures, including the integrated measures of baseline and stress response fecal corticosterone metabolites (FCMs), and downstream measures of neutrophil/lymphocyte ratio (N/L ratio), and body condition score (BCS), to characterize their relationships with survival and trappability. Over two years, deermice were live-trapped monthly, evaluated for BCS, and sampled for feces and blood. Stress response FCMs were evaluated only at first capture. Mark-recapture models, with GC measures as predictors of either survival or trappability, were compared to identify top models. We found that stress response FCMs negatively predicted trappability, and weaker evidence that BCS positively predicted survival. Although the latter provides some support for the "Cort-Fitness" hypothesis, there was no support when using integrated measures. Instead, our findings suggest that deermice with a lower adrenocortical response (i.e. stress response FCMs) were more likely to be captured. Therefore, GC-trappability relationships must be investigated in field studies to avoid linking the wrong GC profile to fitness, and physiological measures other than blood GCs may be useful for detecting GC-fitness patterns.
Mesh-Begriff(e)	Corticosterone ; Female ; Glucocorticoids/metabolism ; Humans ; Male ; Stress, Physiological/physiology
Chemische Substanzen	Glucocorticoids ; Corticosterone (W980KJ009P)
Sprache	Englisch
Erscheinungsdatum	2022-05-06
Erscheinungsland	United States
Dokumenttyp	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	214409-8
ISSN	1095-6867 ; 0018-506X
ISSN (online)	1095-6867
ISSN	0018-506X
DOI	10.1016/j.yhbeh.2022.105183
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Artikel ; Online: Virulence Factors in Coagulase-Negative Staphylococci

Angela França / Vânia Gaio / Nathalie Lopes / Luís D. R. Melo

Pathogens, Vol 10, Iss 2, p

2021 Band 170

Abstract: Coagulase-negative staphylococci (CoNS) have emerged as major pathogens in healthcare-associated facilities, being S. epidermidis , S. haemolyticus and, more recently, S. lugdunensis , the most clinically relevant species. Despite being less virulent ... ...

Abstract	Coagulase-negative staphylococci (CoNS) have emerged as major pathogens in healthcare-associated facilities, being S. epidermidis , S. haemolyticus and, more recently, S. lugdunensis , the most clinically relevant species. Despite being less virulent than the well-studied pathogen S. aureus , the number of CoNS strains sequenced is constantly increasing and, with that, the number of virulence factors identified in those strains. In this regard, biofilm formation is considered the most important. Besides virulence factors, the presence of several antibiotic-resistance genes identified in CoNS is worrisome and makes treatment very challenging. In this review, we analyzed the different aspects involved in CoNS virulence and their impact on health and food.
Schlagwörter	coagulase-negative staphylococci ; biofilms ; virulence factors ; Medicine ; R
Sprache	Englisch
Erscheinungsdatum	2021-02-01T00:00:00Z
Verlag	MDPI AG
Dokumenttyp	Artikel ; Online
Datenquelle	BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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Artikel ; Online: Nonlinear population dynamics are ubiquitous in animals.

Clark, T J / Luis, Angela D

Nature ecology & evolution

2019 Band 4, Heft 1, Seite(n) 75–81

Abstract: Nonlinear dynamics, where a change in the input is not proportional to a change in the output, are often found throughout nature, for example in biochemical kinetics. Because of the complex suite of interacting abiotic and biotic variables present in ... ...

Abstract	Nonlinear dynamics, where a change in the input is not proportional to a change in the output, are often found throughout nature, for example in biochemical kinetics. Because of the complex suite of interacting abiotic and biotic variables present in ecosystems, animal population dynamics are often thought to be driven in a nonlinear, state-dependent fashion. However, so far these have only been identified in model organisms and some natural systems. Here we show that nonlinear population dynamics are ubiquitous in nature. We use nonlinear forecasting to analyse 747 datasets of 228 species to find that insect population trends were highly nonlinear (74%), followed by mammals (58%), bony fish (49%) and birds (35%). This indicates that linear, equilibrium-based model assumptions may fail at predicting population dynamics across a wide range of animal taxa. We show that faster-reproducing animals are more likely to have nonlinear and high-dimensional dynamics, supporting past ecological theory. Lastly, only a third of time series were predictable beyond two years; therefore, the ability to predict animal population trends using these methods may be limited. Our results suggest that the complex dynamics necessary to cause regime shifts and other transitions may be inherent in a wide variety of animals.
Mesh-Begriff(e)	Animals ; Ecology ; Ecosystem ; Models, Biological ; Nonlinear Dynamics ; Population Dynamics
Sprache	Englisch
Erscheinungsdatum	2019-12-09
Erscheinungsland	England
Dokumenttyp	Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
ISSN	2397-334X
ISSN (online)	2397-334X
DOI	10.1038/s41559-019-1052-6
Datenquelle	MEDical Literature Analysis and Retrieval System OnLINE

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Artikel: Leukocyte Evaluation of the Free-Ranging Deermouse (Peromyscus maniculatus) from Montana, USA

Eleftheriou, Andreas / Luis, Angela D

Journal of wildlife diseases. 2020 July 2, v. 56, no. 3

2020

Abstract: We generated reference ranges for seasonal leukocyte differential counts of the free-ranging deermouse (Peromyscus maniculatus) from Montana, US. Blood was collected from the retro-orbital capillary sinus of deermice after topical anesthesia with ... ...

Abstract	We generated reference ranges for seasonal leukocyte differential counts of the free-ranging deermouse (Peromyscus maniculatus) from Montana, US. Blood was collected from the retro-orbital capillary sinus of deermice after topical anesthesia with proparacaine. Although season influenced lymphocyte, neutrophil, and monocyte absolute counts, sex and reproductive status did not.
Schlagwörter	Peromyscus maniculatus ; anesthesia ; monocytes ; neutrophils ; wildlife ; Montana
Sprache	Englisch
Erscheinungsverlauf	2020-0702
Umfang	p. 717-720.
Erscheinungsort	Wildlife Disease Association
Dokumenttyp	Artikel
Anmerkung	NAL-AP-2-clean
ZDB-ID	410709-3
ISSN	1943-3700 ; 0090-3558
ISSN (online)	1943-3700
ISSN	0090-3558
DOI	10.7589/2019-04-104
Datenquelle	NAL Katalog (AGRICOLA)

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Artikel ; Online: Heterospecific competitors and seasonality can affect host physiology and behavior

Andreas Eleftheriou / Amy J. Kuenzi / Angela D. Luis

Ecosphere, Vol 12, Iss 6, Pp n/a-n/a (2021)

key factors in disease transmission

2021

Abstract: Abstract Ecological and environmental factors can influence the transmission of infectious diseases. They can accomplish this via effects on host susceptibility and exposure to infection, which are governed by host physiology and behavior, respectively. ... ...

Abstract	Abstract Ecological and environmental factors can influence the transmission of infectious diseases. They can accomplish this via effects on host susceptibility and exposure to infection, which are governed by host physiology and behavior, respectively. To better inform disease control, more information is needed about how extrinsic factors affect physiological and behavioral processes that determine transmission. We investigated how heterospecific competitors and seasonality may influence host susceptibility and intraspecific contact rates using a directly transmitted disease system, the North American deer mouse (Peromyscus maniculatus)—Sin Nombre hantavirus (SNV) system. In grasslands of western Montana, USA, deer mice compete with dominant voles (Microtus spp.) and shrews (Sorex spp.) and experience a seasonal temperate climate. Higher SNV transmission occurs primarily during spring/summer, when changes in physiology and behavior may serve as influential contributors. We hypothesized that (1) voles, and to a lesser extent shrews, will induce chronic stress, suppress immunity, and may change contact rates of deer mice; and (2) during spring/summer, deer mice may experience chronic stress, suppressed immunity, and higher contact rates, which may help explain the reported seasonality in SNV transmission. Over two years, we trapped small mammals at four grids in western Montana. Deer mice were sampled for feces and blood and evaluated for scar numbers, demography, and body condition scores (BCSs). We evaluated stress physiology with fecal corticosterone metabolites (FCMs), neutrophil/lymphocyte (N/L) ratios and BCSs, immunity with white blood cell (WBC) counts, and contact rates with scar numbers. We found that shrew density was negatively associated with stress response FCMs, suggestive of chronic stress. Additionally, although complex interactions existed, shrew and vole densities were negatively associated with BCSs, but differentially with scar numbers. N/L ratios were higher in spring/summer, whereas WBC ...
Schlagwörter	animal behavior ; fecal glucocorticoid metabolites ; generalized linear regression trees ; rodent‐borne zoonosis ; wildlife infectious disease ; Ecology ; QH540-549.5
Thema/Rubrik (Code)	630
Sprache	Englisch
Erscheinungsdatum	2021-06-01T00:00:00Z
Verlag	Wiley
Dokumenttyp	Artikel ; Online
Datenquelle	BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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Artikel ; Online: Vertigo in Acute Stroke Is a Predictor of Brain Location but Is Not Related to Early Outcome

Angela d’Annunzio / Adrià Arboix / Luís García-Eroles / María-José Sánchez-López

Biomedicines, Vol 10, Iss 2830, p

The Experience of Sagrat Cor Hospital of Barcelona Stroke Registry

2022 Band 2830

Abstract: Background: Vertigo is an uncommon symptom among acute stroke victims. Knowledge about the clinical profile, the brain location, and the early outcome in stroke patients with cerebrovascular diseases and vertigo remains limited. Objectives: In this study, ...

Abstract	Background: Vertigo is an uncommon symptom among acute stroke victims. Knowledge about the clinical profile, the brain location, and the early outcome in stroke patients with cerebrovascular diseases and vertigo remains limited. Objectives: In this study, the effects of vertigo on cerebral topography and early prognosis in cerebrovascular diseases were investigated. Methods: A comparative analysis in terms of demographics, risk factors, clinical characteristics, stroke subtypes, cerebral and vascular topography, and early outcome was performed between patients with presence or absence of vertigo on a sample of 3743 consecutive acute stroke patients available from a 24-year ongoing single-center hospital-based stroke registry. Results: Vertigo was present in 147 patients (3.9%). Multiple logistic regression analysis showed that variables independently associated with vertigo were: location in the cerebellum (OR 5.59, CI 95% 3.24–9.64), nausea or vomiting (OR 4.48, CI 95% 2.95–6.82), medulla (OR 2.87, CI 95% 1.31–6.30), pons (OR 2.39, CI 95% 1.26–4.51), basilar artery (OR 2.36, CI 95% 1.33–4.17), ataxia (OR 2.33, CI 95% 1.41–3.85), and headache (OR 2.31, CI 95% 1.53–3.49). Conclusion: The study confirmed that the presence of vertigo was not related with increased in-hospital mortality or poor prognosis at hospital discharge. Vertigo is mainly related to non-lacunar vertebrobasilar stroke with topographic localization in the cerebellum and/or brainstem.
Schlagwörter	brainstem ; cerebellum ; cerebral infarction ; cerebrovascular diseases ; dizziness ; imbalance ; Biology (General) ; QH301-705.5
Sprache	Englisch
Erscheinungsdatum	2022-11-01T00:00:00Z
Verlag	MDPI AG
Dokumenttyp	Artikel ; Online
Datenquelle	BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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