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1372 full-text articles. Page 1 of 41.

Freshwater Fungal Infections, Dennis J. Baumgardner 2017 Aurora UW Medical Group, Aurora Health Care

Freshwater Fungal Infections, Dennis J. Baumgardner

Journal of Patient-Centered Research and Reviews

Fungal infections as a result of freshwater exposure or trauma are fortunately rare. Etiologic agents are varied, but commonly include filamentous fungi and Candida. This narrative review describes various sources of potential freshwater fungal exposure and the diseases that may result, including fungal keratitis, acute otitis externa and tinea pedis, as well as rare deep soft tissue or bone infections and pulmonary or central nervous system infections following traumatic freshwater exposure during natural disasters or near-drowning episodes. Fungal etiology should be suspected in appropriate scenarios when bacterial cultures or molecular tests are normal or when the infection worsens or fails ...


Aedes Aegypti And Dengue In The Philippines: Centering History And Critiquing Ecological And Public Health Approaches To Mosquito-Borne Disease In The Greater Asian Pacific, Maria R. Pettis 2017 Pomona College

Aedes Aegypti And Dengue In The Philippines: Centering History And Critiquing Ecological And Public Health Approaches To Mosquito-Borne Disease In The Greater Asian Pacific, Maria R. Pettis

Pomona Senior Theses

The global incidence of dengue has increase 30-fold over the past 50 years in the western or Asian Pacific, this region is also a contemporary epicenter for resource extraction and ecological destabilization. Dengue is addition to yellow fever, chikungunya and most recently zika virus, are transmitted by the mosquito vector Aedes aegypti- a domesticated mosquito adept at breeding in artificial household containers and within homes. The history of the domestication and global distribution of Aedes aegypti is intrinsically linked to European expansion into and among tropical worlds. Contemporary population genetics research suggest the westward expansion of the mosquito vector beginning ...


Cyclic Ac253, A Novel Amylin Receptor Antagonist, Improves Cognitive Deficits In A Mouse Model Of Alzheimer’S Disease, Rania Soudy, Aarti Patel, Wen Fu, Kamaljit Kaur, David MacTavish, David Westaway, Rachel Davey, Jeffrey Zajac, Jack Jhamandas 2017 University of Alberta

Cyclic Ac253, A Novel Amylin Receptor Antagonist, Improves Cognitive Deficits In A Mouse Model Of Alzheimer’S Disease, Rania Soudy, Aarti Patel, Wen Fu, Kamaljit Kaur, David Mactavish, David Westaway, Rachel Davey, Jeffrey Zajac, Jack Jhamandas

Pharmacy Faculty Articles and Research

Introduction: Amylin receptor serves as a portal for the expression of deleterious effects of amyloid b-protein (Ab), a key pathologic hallmark of Alzheimer’s disease. Previously, we showed that AC253, an amylin receptor antagonist, is neuroprotective against Ab toxicity in vitro and abrogates Ab-induced impairment of hippocampal long-term potentiation.

Methods: Amyloid precursor protein–overexpressing TgCRND8 mice received intracerebroventricularly AC253 for 5 months. New cyclized peptide cAC253 was synthesized and administered intraperitoneally three times a week for 10 weeks in the same mouse model. Cognitive functions were monitored, and pathologic changes were quantified biochemically and immunohistochemically.

Results: AC253, when administered intracerebroventricularly ...


Localization And Distribution Of Primary Cilia In The Adult Mouse Heart, Ali Zarban, Hannah C. Saternos, Andrea L. Kalinoski, Lijun Liu, Surya M. Nauli, Wissam A. AbouAlaiwi 2016 University of Toledo

Localization And Distribution Of Primary Cilia In The Adult Mouse Heart, Ali Zarban, Hannah C. Saternos, Andrea L. Kalinoski, Lijun Liu, Surya M. Nauli, Wissam A. Aboualaiwi

Pharmacy Faculty Articles and Research

Although primary cilia have been shown to play crucial roles in the development of embryonic mouse heart, their presence and function in adult mouse heart remains controversial. In this study, the presence of primary cilia in adult mouse heart was investigated. The presence of primary cilia was initially demonstrated in the surface of cardiac cells of mouse hearts from both young and adult mice by immunostaining with acetylated α-tubulin, a ciliary structural marker. The presence of cardiac primary cilia in 1-, 3-, 6- and 12-month old mice was further confirmed by staining heart tissues with an antibody against pericentrin, a ...


Predators Catalyze An Increase In Chloroviruses By Foraging On The Symbiotic Hosts Of Zoochlorellae, John DeLong, Zeina Al-Ameeli, Garry A. Duncan, James Van Etten, David D. Dunigan Ph. D. 2016 University of Nebraska-Lincoln

Predators Catalyze An Increase In Chloroviruses By Foraging On The Symbiotic Hosts Of Zoochlorellae, John Delong, Zeina Al-Ameeli, Garry A. Duncan, James Van Etten, David D. Dunigan Ph. D.

James Van Etten Publications

Virus population growth depends on contacts between viruses and their hosts. It is often unclear how sufficient contacts are made between viruses and their specific hosts to generate spikes in viral abundance. Here, we show that copepods, acting as predators, can bring aquatic viruses and their algal hosts into contact. Specifically, predation of the protist Paramecium bursaria by copepods resulted in a >100-fold increase in the number of chloroviruses in 1 d. Copepod predation can be seen as an ecological “catalyst” by increasing contacts between chloroviruses and their hosts, zoochlorellae (endosymbiotic algae that live within paramecia), thereby facilitating viral population ...


An Unusual Case Of Escherichia Coli Meningitis And Bacteremia In An Elderly Woman Presenting With Intractable Low Back Pain, Andrea M. Lauffer, Mahmoud Shorman, Carl McComas 2016 St. Mary's Medical Center, Huntington, WV

An Unusual Case Of Escherichia Coli Meningitis And Bacteremia In An Elderly Woman Presenting With Intractable Low Back Pain, Andrea M. Lauffer, Mahmoud Shorman, Carl Mccomas

Marshall Journal of Medicine

Abstract

Introduction:

We report an unusual case of E. coli meningitis in an elderly woman who presented to the emergency room with a chief complaint of intractable low back pain.

Case Description:

A 67 year old woman presented to the emergency room for a chief complaint of intractable low back pain. After admission, the patient developed delirium. Blood cultures were drawn. Patient underwent a lumbar puncture which revealed purulent cerebrospinal fluid. Results of the cerebrospinal fluid and blood cultures revealed pan-sensitive E. coli.

Conclusion:

In the geriatric population, delayed presentation of meningitis can occur for various reasons. With the older ...


Laboratory Exercises In Microbiology: Discovering The Unseen World Through Hands-On Investigation, Joan Petersen, Susan McLaughlin 2016 CUNY Queensborough Community College

Laboratory Exercises In Microbiology: Discovering The Unseen World Through Hands-On Investigation, Joan Petersen, Susan Mclaughlin

Open Educational Resources

The exercises in this laboratory manual are designed to engage students in hand-on activities that reinforce their understanding of the microbial world. Topics covered include: staining and microscopy, metabolic testing, physical and chemical control of microorganisms, and immunology. The target audience is primarily students preparing for a career in the health sciences, however many of the topics would be appropriate for a general microbiology course as well.


Patterns Of Fecal Progestagens, Estrogens, And Androgens Associated With Reproduction In Blue-Throated Piping Guans (Pipile Cumanensis), Leslie Ann Sterling, Helen Clawitter, Corinne P. Kozlowski, Michael Macek, Anne Tieber 2016 Washington University in St Louis

Patterns Of Fecal Progestagens, Estrogens, And Androgens Associated With Reproduction In Blue-Throated Piping Guans (Pipile Cumanensis), Leslie Ann Sterling, Helen Clawitter, Corinne P. Kozlowski, Michael Macek, Anne Tieber

Undergraduate Research Symposium Posters

While fecal hormone analyses are routinely employed to monitor reproduction in mammals, few studies have used these techniques for monitoring reproductive events in birds. This study describes the endocrine patterns associated with reproduction in the blue-throated piping guan (Pipile cumanensis), a less threatened relative of the critically endangered Trinidad piping guan (P. pipile). Fecal samples were collected approximately once a week for 3 years from seven female guans and six male guans at the Saint Louis Zoo. Concentrations of fecal progestagens, estrogens, and androgens were quantified using commercially available enzyme immunoassays. Baseline progestagen concentrations for females ranged from 1.2 ...


Microhabitat Use Affects Goby (Gobiidae) Cue Choice In Spatial Learning Task, G. E. White, C. Brown 2016 Macquarie University

Microhabitat Use Affects Goby (Gobiidae) Cue Choice In Spatial Learning Task, G. E. White, C. Brown

Culum Brown, Ph.D.

This study investigated whether spatial learning ability and cue use of gobies (Gobiidae) from two contrasting habitats differed in a spatial task. Gobies were collected from the spatially complex rock pools and dynamic, homogenous sandy shores. Fishes were trained to locate a shelter under the simulated threat of predation and it was determined whether they used local or extra-maze (global) and geometric cues to do so. It was hypothesized that fishes from rock pools would outperform fishes from sandy shores in their ability to relocate shelter and the two groups would differ in their cue use. It was found that ...


Predator Recognition And Responses In The Endangered Macquarie Perch (Macquaria Australasica), Culum Brown, Jennifer Morgan 2016 Macquarie University

Predator Recognition And Responses In The Endangered Macquarie Perch (Macquaria Australasica), Culum Brown, Jennifer Morgan

Culum Brown, Ph.D.

Macquarie perch, Macquaria austalasica, is an endangered species endemic to southern Australia whose distribution is highly fragmented and continues to decline. Key threatening processes include habitat destruction, dams and weirs, overfishing and interactions with introduced species. Here, we examined the responses of small and large Macquarie perch to two native predators and to the introduced redfin perch, Perca fluviatilis. Our results showed that Macquarie perch generally avoided large-bodied native predators but was attracted to small-bodied native predators. Responses to large and small redfin perch lay between these two extremes, suggesting that the Macquarie perch does treat these foreign fish as ...


Emotions In Goats: Mapping Physiological, Behavioural And Vocal Profiles, Elodie F. Briefer, Federico Tettamanti, Alan G. McElligott 2016 Queen Mary University of London

Emotions In Goats: Mapping Physiological, Behavioural And Vocal Profiles, Elodie F. Briefer, Federico Tettamanti, Alan G. Mcelligott

Elodie Mandel-Briefer, Ph.D.

Emotions are important because they enable the selection of appropriate behavioural decisions in response to external or internal events. Techniques for understanding and assessing animal emotions, and particularly positive ones, are lacking. Emotions can be characterized by two dimensions: their arousal (bodily excitation) and their valence (negative or positive). Both dimensions can affect emotions in different ways. It is thus crucial to assess their effects on biological parameters simultaneously, so that accurate indicators of arousal and valence can be identified. To find convenient and noninvasive tools to assess emotions in goats, Capra hircus, we measured physiological, behavioural and vocal responses ...


Semi-Wild Chimpanzees Open Hard-Shelled Fruits Differently Across Communities, Bruce Rawlings, Marina Davilla-Ross, Sarah T. Boysen 2016 University of Portsmouth

Semi-Wild Chimpanzees Open Hard-Shelled Fruits Differently Across Communities, Bruce Rawlings, Marina Davilla-Ross, Sarah T. Boysen

Sarah Boysen, Ph.D.

Researchers investigating the evolutionary roots of human culture have turned to comparing behaviours across nonhuman primate communities, with tool-based foraging in particular receiving much attention. This study examined whether natural extractive foraging behaviours other than tool selection differed across nonhuman primate colonies that had the same foods available. Specifically, the behaviours applied to open the hard-shelled fruits of Strychnos spp. were examined in three socially separate, semi-wild colonies of chimpanzees (Pan troglodytes) that lived under shared ecological conditions at Chimfunshi Wildlife Orphanage, and were comparable in their genetic makeup. The chimpanzees (N = 56) consistently applied six techniques to open these ...


Behavioural Budgeting By Wild Coyotes: The Influence Of Food Resources And Social Organization, Marc Bekoff, Michael C. Wells 2016 University of Colorado

Behavioural Budgeting By Wild Coyotes: The Influence Of Food Resources And Social Organization, Marc Bekoff, Michael C. Wells

Marc Bekoff, Ph.D.

Daytime behavioural budgets of coyotes (Canis latrans) living in the Grand Teton National Park Jackson, Wyoming, were analysed in order to determine how activity patterns ' ere influenced by food resources and social organization. In winter coyotes rested more-and hunted less than in other seasons. Pack-living coyotes rested more and travelled less than resident pairs or solitary resident or transients during winter months when the major food resource was ungulate (predominantly elk, Cervus canadensis) carrion. A mated female living in a pack rested significantly more and travelled significantly less than a mated female living only with her mate (as a resident ...


Social Play In Coyotes, Wolves, And Dogs, Marc Bekoff 2016 University of Missouri

Social Play In Coyotes, Wolves, And Dogs, Marc Bekoff

Marc Bekoff, Ph.D.

No abstract provided.


Increasing Our Compassion Footprint: The Animals’ Manifesto, Marc Bekoff 2016 University of Colorado

Increasing Our Compassion Footprint: The Animals’ Manifesto, Marc Bekoff

Marc Bekoff, Ph.D.

Our relationships with animals are wide-ranging. When people tell me that they love animals and then harm or kill them I tell them I’m glad they don’t love me. Many individuals, including scientists, ignore their responsibility when they interact with animals and fail to recognize that doing something in the name of science, which usually means in the name of humans, is not an adequate reason for intentionally causing suffering, pain, or death. “Good welfare” usually is not “good enough.” Existing regulations allow animals to be treated in regrettable ways that demean us as a species. Compassion is ...


Animal Minds, Cognitive Ethology, And Ethics, Colin Allen, Marc Bekoff 2016 Indiana University

Animal Minds, Cognitive Ethology, And Ethics, Colin Allen, Marc Bekoff

Marc Bekoff, Ph.D.

Our goal in this paper is to provide enough of an account of the origins of cognitive ethology and the controversy surrounding it to help ethicists to gauge for themselves how to balance skepticism and credulity about animal minds when communicating with scientists. We believe that ethicists’ arguments would benefit from better understanding of the historical roots of ongoing controversies. It is not appropriate to treat some widely reported results in animal cognition as if their interpretations are a matter of scientific consensus. It is especially important to understand why loose references to ‘‘cognitive ethology’’ by philosophers can signal ignorance ...


Animal Welfare And Individual Characteristics: A Conversation Against Speciesism, Marc Bekoff, Lori Gruen 2016 University of Colorado

Animal Welfare And Individual Characteristics: A Conversation Against Speciesism, Marc Bekoff, Lori Gruen

Marc Bekoff, Ph.D.

It seems impossible for a human being not to have some point of view concerning nonhuman animal (hereafter animal) welfare. Many people make decisions about how humans are permitted to treat animals using speciesist criteria, basing their decisions on an individual's species membership rather than on that animal's individual characteristics. Although speciesism provides a convenient way for making difficult decisions about who should be used in different types of research, we argue that such decisions should rely on an analysis of individual characteristics and should not be based merely on species membership. We do not argue that the ...


Integrating Values And Ethics Into Wildlife Policy And Management—Lessons From North America, Camilla H. Fox, Marc Bekoff 2016 Animal Welfare Institute

Integrating Values And Ethics Into Wildlife Policy And Management—Lessons From North America, Camilla H. Fox, Marc Bekoff

Marc Bekoff, Ph.D.

Few animals provoke as wide a range of emotions as wolves. Some see wolves as icons of a lost wilderness; others see them as intruders. As the battle continues between wolf proponents and opponents, finding solutions that resolve conflicts while supporting the integrity of nature is challenging. In this essay we argue that we need to make room for wolves and other native carnivores who are re-colonizing areas from which they were extirpated. Strategies that foster coexistence are necessary and wildlife agencies must consider all stakeholders and invest adequate resources to inform the public about how to mitigate conflicts between ...


Dynamic Host-Pathogen Interactions Result In Fungal Epitope Unmasking, Alex Hopke 2016 University of Maine

Dynamic Host-Pathogen Interactions Result In Fungal Epitope Unmasking, Alex Hopke

Electronic Theses and Dissertations

Molecular camouflage is used by a diverse set of pathogens to disguise their identity and avoid recognition by protective host receptors. The opportunistic fungal pathogen Candida albicans is a good example, as it masks the inflammatory component β-glucan in its cell wall to evade detection by the immune receptor Dectin-1. Interestingly, it has been seen that β-glucan becomes unmasked during infection in vivo, though the underlying mechanisms remained unclear. Exposure levels of this epitope may be important, as Dectin-1 mediates protection from some strains of C. albicans and alterations in the organization and composition of the Candida cell wall can ...


Ethical Issues In The Use Of Animals In Biomedical And Psychopharmocological Research, John P. Gluck, Jordan Bell 2016 University of New Mexico

Ethical Issues In The Use Of Animals In Biomedical And Psychopharmocological Research, John P. Gluck, Jordan Bell

John P. Gluck, Ph.D.

Rationale: The ethical debate concerning the use of animals in biomedical and pharmacological research continues to be replete with misunderstandings about whether animals have moral standing. Objectives: This article briefly reviews the central ethical positions and their relationship to the basic parameters of research regulation from an international perspective. The issues associated with the validation of animal models will then be discussed. Finally, suggestions for empirical ethics research will be presented. Methods: Recent literature reviews were accessed and analyzed. Results: This review summarizes the pertinent ethical and research literature. Conclusions: In summary, regardless of the ethical perspective one favors, there ...


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