scholarly journals Isolation and Characterisation of the Bundooravirus Genus and Phylogenetic Investigation of the Salasmaviridae Bacteriophages

Viruses ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1557
Author(s):  
Cassandra R. Stanton ◽  
Daniel T. F. Rice ◽  
Michael Beer ◽  
Steven Batinovic ◽  
Steve Petrovski
Keyword(s):  
Treatment Options ◽  
Teichoic Acid ◽  
The United States ◽  
Industrial Processes ◽  
Antimicrobial Compounds ◽  
Wall Teichoic Acid ◽  
Medical Settings ◽  
Phage Evolution ◽  
Genetic Mosaicism ◽  
Resistant Mutants

Bacillus is a highly diverse genus containing over 200 species that can be problematic in both industrial and medical settings. This is mainly attributed to Bacillus sp. being intrinsically resistant to an array of antimicrobial compounds, hence alternative treatment options are needed. In this study, two bacteriophages, PumA1 and PumA2 were isolated and characterized. Genome nucleotide analysis identified the two phages as novel at the DNA sequence level but contained proteins similar to phi29 and other related phages. Whole genome phylogenetic investigation of 34 phi29-like phages resulted in the formation of seven clusters that aligned with recent ICTV classifications. PumA1 and PumA2 share high genetic mosaicism and form a genus with another phage named WhyPhy, more recently isolated from the United States of America. The three phages within this cluster are the only candidates to infect B. pumilus. Sequence analysis of B. pumilus phage resistant mutants revealed that PumA1 and PumA2 require polymerized and peptidoglycan bound wall teichoic acid (WTA) for their infection. Bacteriophage classification is continuously evolving with the increasing phages’ sequences in public databases. Understanding phage evolution by utilizing a combination of phylogenetic approaches provides invaluable information as phages become legitimate alternatives in both human health and industrial processes.

scholarly journals Influence of Provider Interaction on Patient's Readiness Toward Audiological Services and Technology

2020 ◽  
Vol 31 (05) ◽  
pp. 342-353
Author(s):  
Amyn M. Amlani
Keyword(s):  
Treatment Options ◽  
Descriptive Analysis ◽  
Univariate Analysis ◽  
The United States ◽  
Consumer Electronics ◽  
Medical Rehabilitation ◽  
Sample Survey ◽  
Consumer Decision Making ◽  
Medical Settings ◽  
Mean Differences

Abstract Background Patients and providers recognize the importance of patient-centered care. Clinical interactions, however, suggest that audiologists maintain their traditional provider-centered approach. Purpose The primary purpose of this study was to assess the degree to which provider interaction influenced patient readiness toward audiological services using the neobehavioral concept of need recognition described in consumer decision-making. Research Design We used a randomized, within-group experimental approach using survey responses to quantify predisposed expectations on ten dimensions toward service and technology provision 2 weeks before and 2 weeks after an audiological assessment. Responses were also categorized as a function of the respondent-perceived professional setting of the provider (medical, rehabilitation, and consumer electronics). Study Sample Survey respondents included 618 adults {186 males (mean age = 63.1 years; standard deviation [SD] = 5.3) and 432 females [mean age = 58.4 years; SD = 6.2]} from across the United States. Data Collection and Analysis Data were analyzed using two approaches. First, we used a two-step cluster analysis procedure that revealed natural groupings (i.e., profiles) of respondent characteristics of the ten dimensions. Second, we compared within-group mean differences between pre- and postappointment responses using a univariate analysis of variance, with mean differences reported as a function of professional setting and preappointment responses serving as the control condition. Results Results revealed that the predisposed expectation profiles among the ten dimensions differed among the professional settings, with rehabilitation having the highest mean response values and consumer electronics having the least mean response values. A descriptive analysis indicated that respondents in the rehabilitation and medical settings presented the greatest interest in amplification before the patient-provider interaction, but the least interest afterward. In addition, postappointment analyses revealed that providers failed statistically to meet patients' predisposed expectations in all three settings. Conclusions Overall, most respondents' predisposed expectations were unmet during their interaction with an audiologist. These expectations differed across professional settings, with the greatest unmet expectations observed in the rehabilitative and medical settings. Patient readiness is influenced by the behavior of the provider which, at present, appears to be a barrier to patients' acceptance of treatment options.

scholarly journals “It’s way more than just writing a prescription”: A qualitative study of preferences for integrated versus non-integrated treatment models among individuals with opioid use disorder

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Elizabeth C. Saunders ◽  
Sarah K. Moore ◽  
Olivia Walsh ◽  
Stephen A. Metcalf ◽  
Alan J. Budney ◽  
...  
Keyword(s):  
Qualitative Study ◽  
The United States ◽  
Opioid Use Disorder ◽  
Integrated Treatment ◽  
Medical Setting ◽  
Integrated Models ◽  
Opioid Use ◽  
Medical Settings ◽  
Psychosocial Services ◽  
Treatment Models

Abstract Background Increasingly, treatment for opioid use disorder (OUD) is offered in integrated treatment models addressing both substance use and other health conditions within the same system. This often includes offering medications for OUD in general medical settings. It remains uncertain whether integrated OUD treatment models are preferred to non-integrated models, where treatment is provided within a distinct treatment system. This study aimed to explore preferences for integrated versus non-integrated treatment models among people with OUD and examine what factors may influence preferences. Methods This qualitative study recruited participants (n = 40) through Craigslist advertisements and flyers posted in treatment programs across the United States. Participants were 18 years of age or older and scored a two or higher on the heroin or opioid pain reliever sections of the Tobacco, Alcohol, Prescription Medications, and Other Substances (TAPS) Tool. Each participant completed a demographic survey and a telephone interview. The interviews were coded and content analyzed. Results While some participants preferred receiving OUD treatment from an integrated model in a general medical setting, the majority preferred non-integrated models. Some participants preferred integrated models in theory but expressed concerns about stigma and a lack of psychosocial services. Tradeoffs between integrated and non-integrated models were centered around patient values (desire for anonymity and personalization, fear of consequences), the characteristics of the provider and setting (convenience, perceived treatment effectiveness, access to services), and the patient-provider relationship (disclosure, trust, comfort, stigma). Conclusions Among this sample of primarily White adults, preferences for non-integrated versus integrated OUD treatment were mixed. Perceived benefits of integrated models included convenience, potential for treatment personalization, and opportunity to extend established relationships with medical providers. Recommendations to make integrated treatment more patient-centered include facilitating access to psychosocial services, educating patients on privacy, individualizing treatment, and prioritizing the patient-provider relationship. This sample included very few minorities and thus findings may not be fully generalizable to the larger population of persons with OUD. Nonetheless, results suggest a need for expansion of both OUD treatment in specialty and general medical settings to ensure access to preferred treatment for all.

scholarly journals The Public’s Perception of Interventions for Migraine Headache Disorders: A Crowdsourcing Population-Based Study

2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Orr Shauly ◽  
Daniel J Gould ◽  
Ketan M Patel
Keyword(s):  
Migraine Headache ◽  
Treatment Options ◽  
The United States ◽  
Cost Of Care ◽  
Adverse Outcomes ◽  
Amazon Mechanical Turk ◽  
Cross Sectional ◽  
Economic Productivity ◽  
Migraine Headaches ◽  
Patient Reported

Abstract Background Migraine disorders are a leading cause of morbidity and decreased economic productivity in the United States among both men and women. As such, it is important to consider patient opinions, and have an accurate representation of the burden and sentiment toward currently available interventions among those suffering from migraines. Objectives The aim of the study was to assess patient options regarding adverse outcomes of the various treatment options available for migraine headaches. Methods A prospective cross-sectional study of volunteers recruited through an internet crowdsourcing service, Amazon Mechanical Turk©, was conducted. Surveys were administered to collect patient-reported opinions regarding adverse outcomes of both surgical and nonsurgical treatment options for migraine headaches. Results The prevalence of migraine headache across all study participants was 15.6% and varied slightly across participant demographics. Individuals ages 35–44 (2.73 migraines per month) experienced the fewest migraine and with the lowest severity. Those individuals ages 45+ experienced the most severe headaches (Visual Analog Scale = 44.23 mm). Additionally, the greatest migraine frequency and severity existed among those households with yearly income of $75,000–$100,000. The lowest injection therapy utility scores were obtained for adverse outcomes of hematoma (47.60 mm) and vertigo (54.40 mm). Conclusions Migraine headaches remains a significant problem among the US population, with an overall prevalence of 15.6% (approximately 50 million Americans). Additionally, physicians interesting in offering minimally invasive or surgical treatment for migraine headaches should focus on mitigating patient fears regarding clinical outcomes and cost of care.

scholarly journals Depletion of Undecaprenyl Pyrophosphate Phosphatases Disrupts Cell Envelope Biogenesis in Bacillus subtilis

2016 ◽  
Vol 198 (21) ◽  
pp. 2925-2935 ◽  
Author(s):  
Heng Zhao ◽  
Yingjie Sun ◽  
Jason M. Peters ◽  
Carol A. Gross ◽  
Ethan C. Garner ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Transcriptional Repression ◽  
Cell Envelope ◽  
Turgor Pressure ◽  
Teichoic Acid ◽  
Lethal Gene ◽  
Genetic Redundancy ◽  
Wall Teichoic Acid ◽  
Content Type ◽  
Lipid Ii

ABSTRACTThe integrity of the bacterial cell envelope is essential to sustain life by countering the high turgor pressure of the cell and providing a barrier against chemical insults. InBacillus subtilis, synthesis of both peptidoglycan and wall teichoic acids requires a common C55lipid carrier, undecaprenyl-pyrophosphate (UPP), to ferry precursors across the cytoplasmic membrane. The synthesis and recycling of UPP requires a phosphatase to generate the monophosphate form Und-P, which is the substrate for peptidoglycan and wall teichoic acid synthases. Using an optimizedclusteredregularlyinterspacedshortpalindromicrepeat (CRISPR) system with catalytically inactive (“dead”)CRISPR-associated protein9(dCas9)-based transcriptional repression system (CRISPR interference [CRISPRi]), we demonstrate thatB. subtilisrequires either of two UPP phosphatases, UppP or BcrC, for viability. We show that a third predicted lipid phosphatase (YodM), with homology to diacylglycerol pyrophosphatases, can also support growth when overexpressed. Depletion of UPP phosphatase activity leads to morphological defects consistent with a failure of cell envelope synthesis and strongly activates the σM-dependent cell envelope stress response, includingbcrC, which encodes one of the two UPP phosphatases. These results highlight the utility of an optimized CRISPRi system for the investigation of synthetic lethal gene pairs, clarify the nature of theB. subtilisUPP-Pase enzymes, and provide further evidence linking the σMregulon to cell envelope homeostasis pathways.IMPORTANCEThe emergence of antibiotic resistance among bacterial pathogens is of critical concern and motivates efforts to develop new therapeutics and increase the utility of those already in use. The lipid II cycle is one of the most frequently targeted processes for antibiotics and has been intensively studied. Despite these efforts, some steps have remained poorly defined, partly due to genetic redundancy. CRISPRi provides a powerful tool to investigate the functions of essential genes and sets of genes. Here, we used an optimized CRISPRi system to demonstrate functional redundancy of two UPP phosphatases that are required for the conversion of the initially synthesized UPP lipid carrier to Und-P, the substrate for the synthesis of the initial lipid-linked precursors in peptidoglycan and wall teichoic acid synthesis.

scholarly journals The Role of Oxidative Stress-Induced Epigenetic Alterations in Amyloid-βProduction in Alzheimer’s Disease

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Li Zuo ◽  
Benjamin T. Hemmelgarn ◽  
Chia-Chen Chuang ◽  
Thomas M. Best
Keyword(s):  
Oxidative Stress ◽  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Amyloid Beta ◽  
Treatment Options ◽  
Memory Loss ◽  
The United States ◽  
Traditional Medicines ◽  
Progressive Neurodegeneration ◽  
Antioxidant Supplements

An increasing number of studies have proposed a strong correlation between reactive oxygen species (ROS)-induced oxidative stress (OS) and the pathogenesis of Alzheimer’s disease (AD). With over five million people diagnosed in the United States alone, AD is the most common type of dementia worldwide. AD includes progressive neurodegeneration, followed by memory loss and reduced cognitive ability. Characterized by the formation of amyloid-beta (Aβ) plaques as a hallmark, the connection between ROS and AD is compelling. Analyzing the ROS response of essential proteins in the amyloidogenic pathway, such as amyloid-beta precursor protein (APP) and beta-secretase (BACE1), along with influential signaling programs of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and c-Jun N-terminal kinase (JNK), has helped visualize the path between OS and Aβoverproduction. In this review, attention will be paid to significant advances in the area of OS, epigenetics, and their influence on Aβplaque assembly. Additionally, we aim to discuss available treatment options for AD that include antioxidant supplements, Asian traditional medicines, metal-protein-attenuating compounds, and histone modifying inhibitors.

scholarly journals Hidden Mode of Action of Glycopeptide Antibiotics: Inhibition of Wall Teichoic Acid Biosynthesis

2017 ◽  
Vol 121 (16) ◽  
pp. 3925-3932 ◽  
Author(s):  
Manmilan Singh ◽  
James Chang ◽  
Lauryn Coffman ◽  
Sung Joon Kim
Keyword(s):  
Mode Of Action ◽  
Teichoic Acid ◽  
Glycopeptide Antibiotics ◽  
Acid Biosynthesis ◽  
Wall Teichoic Acid

scholarly journals Localization and Interactions of Teichoic Acid Synthetic Enzymes in Bacillus subtilis

2007 ◽  
Vol 190 (5) ◽  
pp. 1812-1821 ◽  
Author(s):  
Alex Formstone ◽  
Rut Carballido-López ◽  
Philippe Noirot ◽  
Jeffery Errington ◽  
Dirk-Jan Scheffers
Keyword(s):  
Bacillus Subtilis ◽  
Cell Shape ◽  
Spatial Organization ◽  
Structural Integrity ◽  
Fluorescent Protein ◽  
Teichoic Acid ◽  
Cytoskeletal Proteins ◽  
Thick Wall ◽  
Wall Teichoic Acid ◽  
Critical Function

ABSTRACT The thick wall of gram-positive bacteria is a polymer meshwork composed predominantly of peptidoglycan (PG) and teichoic acids, both of which have a critical function in maintenance of the structural integrity and the shape of the cell. In Bacillus subtilis 168 the major teichoic acid is covalently coupled to PG and is known as wall teichoic acid (WTA). Recently, PG insertion/degradation over the lateral wall has been shown to occur in a helical pattern. However, the spatial organization of WTA assembly and its relationship with cell shape and PG assembly are largely unknown. We have characterized the localization of green fluorescent protein fusions to proteins involved in several steps of WTA synthesis in B. subtilis: TagB, -F, -G, -H, and -O. All of these localized similarly to the inner side of the cytoplasmic membrane, in a pattern strikingly similar to that displayed by probes of nascent PG. Helix-like localization patterns are often attributable to the morphogenic cytoskeletal proteins of the MreB family. However, localization of the Tag proteins did not appear to be substantially affected by single disruption of any of the three MreB homologues of B. subtilis. Bacterial and yeast two-hybrid experiments revealed a complex network of interactions involving TagA, -B, -E, -F, -G, -H, and -O and the cell shape determinants MreC and MreD (encoded by the mreBCD operon and presumably involved in the spatial organization of PG synthesis). Taken together, our results suggest that, in B. subtilis at least, the synthesis and export of WTA precursors are mediated by a large multienzyme complex that may be associated with the PG-synthesizing machinery.

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