The salivary microbiota as a diagnostic indicator of oral cancer: A descriptive, non-randomized study of cancer-free and oral squamous cell carcinoma subjects

BACKGROUND: The purpose of the present investigation was to determine if the salivary counts of 40 common oral bacteria in subjects with an oral squamous cell carcinoma (OSCC) lesion would differ from those found in cancer-free (OSCC-free) controls. METHODS: Unstimulated saliva samples were collected from 229 OSCC-free and 45 OSCC subjects and evaluated for their content of 40 common oral bacteria using checkerboard DNA-DNA hybridization. DNA counts per ml saliva were determined for each species, averaged across subjects in the 2 subject groups, and significance of differences between groups determined using the Mann-Whitney test and adjusted for multiple comparisons. Diagnostic sensitivity and specificity in detection of OSCC by levels of salivary organisms were computed and comparisons made separately between a non-matched group of 45 OSCC subjects and 229 controls and a group of 45 OSCC subjects and 45 controls matched by age, gender and smoking history. RESULTS: Counts of 3 of the 40 species tested, Capnocytophaga gingivalis, Prevotella melaninogenica and Streptococcus mitis, were elevated in the saliva of individuals with OSCC (p < 0.001). When tested as diagnostic markers the 3 species were found to predict 80% of cancer cases (sensitivity) while excluding 83% of controls (specificity) in the non-matched group. Diagnostic sensitivity and specificity in the matched group were 80% and 82% respectively. CONCLUSION: High salivary counts of C. gingivalis, P. melaninogenica and S. mitis may be diagnostic indicators of OSCC

Narratives of urban female adolescents in South Africa: dietary and physical activity practices in an obesogenic environment

Objectives: The objectives of this study were to investigate the narratives pertaining to dietary and physical activity practices by female adolescents in Soweto.Design: This was exploratory qualitative research, using duo interviews (pairs of best friends) (n = 29) from adolescent females.Setting: The setting was three urban high schools in the township of Soweto, South Africa.Subjects: Subjects were twenty-nine pairs of Grade 12 female adolescents predominantly, with a mean age of 18 years (15.3-21.6, standard deviation 1.1).Outcome measures: The outcome measure was body mass index, interpreted in relation to eating practices and exercise participation.Results: Locally prepared convenience foods were reported to replace home-prepared breakfast. The majority of participants did not prioritise eating breakfast at home, but purchased deep-fried dough balls (“fat” cakes) from vendors before school. Lunch boxes were also not commonly used as participants preferred to use spending money to purchase food from the school tuck shop. Kotas, “fat” cakes and snacks were popular lunch choices because of their affordability, convenience, peer influence and popularity. Respondents engaged in minimal active recreationalactivities. A lack of facilities and concerns about safety were barriers to activity.Conclusion: This study highlights the importance of investigating the immediate social context as a potential intervention point to improve the lifestyle of adolescents, to enable them to make the affordable and convenient choice, the healthier choice. Keywords: adolescent, eating, consumption, nutrition, physical activity, obesity, urban, South Afric

A novel anti-mycobacterial function of mitogen-activated protein kinase phosphatase-1

<p>Abstract</p> <p>Background</p> <p><it>Mycobacterium tuberculosis </it>(MTB) is a major cause of morbidity and mortality in the world. To combat against this pathogen, immune cells release cytokines including tumor necrosis factor-α (TNF-α), which is pivotal in the development of protective granulomas. Our previous results showed that Bacillus Calmette Guerin (BCG), a mycobacterium used as a model to investigate the immune response against MTB, stimulates the induction of TNF-α via mitogen-activated protein kinase (MAPK) in human blood monocytes. Since MAPK phosphatase-1 (MKP-1) is known to regulate MAPK activities, we examined whether MKP-1 plays a role in BCG-induced MAPK activation and cytokine expression.</p> <p>Results</p> <p>Primary human blood monocytes were treated with BCG and assayed for MKP-1 expression. Our results demonstrated that following exposure to BCG, there was an increase in the expression of MKP-1. Additionally, the induction of MKP-1 was regulated by p38 MAPK and extracellular signal-regulated kinase 1 and 2 (ERK1/2). Surprisingly, when MKP-1 expression was blocked by its specific siRNA, there was a significant decrease in the levels of phospho-MAPK (p38 MAPK and ERK1/2) and TNF-α inducible by BCG.</p> <p>Conclusions</p> <p>Since TNF-α is pivotal in granuloma formation, the results indicated an unexpected positive function of MKP-1 against mycobacterial infection as opposed to its usual phosphatase activity.</p

What to expect from a non-suspicious prostate MRI? A review = Que peut-on attendre d’une IRM prostatique non suspecte ? Une revue de la littérature

BACKGROUND: Many guidelines now recommend multiparametric MRI (mpMRI) prior to an initial or repeat prostate biopsy. However, clinical decision making for men with a non-suspicious mpMRI (Likert or PIRADS score 1-2) varies. OBJECTIVES: To review the most recent literature to answer three questions. (1) Should we consider systematic biopsy if mpMRI is not suspicious? (2) Are there additional predictive factors that can help decide which patient should have a biopsy? (3) Can the low visibility of some cancers be explained and what are the implications? SOURCES: A narrative review was performed in Medline databases using two searches with the terms "MRI" and "prostate cancer" and ("diagnosis" or "biopsy") and ("non-suspicious" or "negative" or "invisible"); "prostate cancer MRI visible". References of the selected articles were screened for additional articles. STUDY SELECTION: Studies published in the last 5 years in English language were assessed for eligibility and selected if data was available to answer one of the three study questions. RESULTS: Considering clinically significant cancer as ISUP grade≥2, the negative predictive value (NPV) of mpMRI in various settings and populations ranges from 76% to 99%, depending on cancer prevalence and the type of confirmatory reference test used. NPV is higher among patients with prior negative biopsy (88-96%), and lower for active surveillance patients (85-90%). The PSA density (PSAd) with a threshold of PSAd<0.15ng/ml/ml was the most studied and relevant predictive factor used in combination with mpMRI to rule out clinically significant cancer. Finally, mpMRI-invisible tumours appear to differ from a histopathological and genetic point of view, conferring clinical advantage to invisibility. LIMITATIONS: Most published data come from expert centres and results may not be reproducible in all settings. CONCLUSION: mpMRI has high diagnostic accuracy and in cases of negative mpMRI, PSA density can be used to determine which patient should have a biopsy. Growing knowledge of the mechanisms and genetics underlying MRI visibility will help develop more accurate risk calculators and biomarkers

Environmental and Parental Influences on Offspring Health and Growth in Great Tits (Parus major)

PMCID: PMC3728352This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited

Phenological tracking of a seasonal climate window in a recovering tropical island bird species

Constraints on evolutionary adaptation and range shifts mean that phenotypic plasticity, which includes physiological, developmental or behavioural responses to environmental conditions, could be an important mode of adaptation to a changing climate for many species with small insular populations. While there is evidence to suggest adaptive plasticity to climate in some island populations, little is known about this capacity in species that have experienced a severe population bottleneck. In a changing climate, plasticity in the timing of life-history events, such as in breeding phenology, is adaptive if timing is optimised in seasonal environments, although these processes are poorly understood for tropical species. Here, we quantify the effects of climate on the breeding phenology and success of the Mauritius kestrel (Falco punctatus), a tropical raptor whose extinction has been averted by conservation management. We show that the timing of egg-laying is advancing in response to warming, at rates similar to temperate bird populations. Individual females show plasticity to temperature, although there is limited variation among individual responses. We show that advances in breeding phenology are likely to be adaptive, as they track changes in a seasonal climate window of favourable conditions, defined by late winter-early spring temperatures and the onset of the summer rainy season. Our results provide a rare example of a small and bottlenecked insular population that has adjusted to recent climate change through phenotypic plasticity. Furthermore, seasonal climate windows and their dynamics may be widespread mechanisms through which tropical species are impacted by and respond to climate change

A Modified Newcastle-Ottawa Scale for Assessment of Study Quality in Genetic Urological Research

Our modification of the traditional Newcastle-Ottawa scale enables urological researchers to effectively appraise and communicate the quality of genetic-based research in urology

The effects of yoga on mental health in school-aged children: A Systematic Review and Narrative Synthesis of Randomised Control Trials

Copyright © The Author(s) 2022. It is becoming increasingly common for frontline clinicians to see children and teenagers struggle with their mental health. Since mental health issues have increased over the past ten years in the UK, they are now the leading cause of disability and cost the British economy £105 billion annually. The review discusses the evidence base underpinning the effect of yoga on children’s mental health and summarises the results of 21 research papers. The Cumulative Index to Nursing and Allied Health Literature, PsycINFO, ERIC, Web of Science, PubMed, Medline and Cochrane Library were searched through Ovid from January 2008 until May 2022. The keywords 'yoga OR mindfulness – AND school AND children OR child OR youth OR adolescent' were used. The search was limited to studies in the English language. The quality of each study was rated against Version 2 of the Cochrane risk-of-bias tool for randomised control trials and a set of inclusion and exclusion criteria. The evidence for yoga therapies in children is encouraging, although studies include methodological flaws such as small sample sizes and sparse information on interventions. This review has highlighted that yoga interventions may be implemented in schools as a preventative and therapeutic measure for mental health issues

Systematic review and narrative synthesis of pharmacist provided medicines optimisation services in care homes for older people to inform the development of a generic training or accreditation process

Objectives: To develop a training programme to enable pharmacists with prescribing rights to assume responsibility for the provision of pharmaceutical care within care homes, a systematic review and narrative synthesis was undertaken to identify reported approaches to training pharmacists and use this literature to identify potential knowledge requirements. Methods: A PROSPERO‐registered systematic review was performed using key search terms for care homes, pharmacist, education, training and pharmaceutical care. Papers reporting primary research focussed on care of the older person within the care home setting were included. No restrictions were placed on methodology. Two researchers independently reviewed titles, abstracts and papers. Agreement on inclusion was reached through consensus. Data on titles, training and activities undertaken were extracted and knowledge requirements identified. Findings were synthesised and reported narratively. Key findings: Fifty‐nine papers were included, most of which were uncontrolled service evaluations. Four papers reported an accreditation process for the pharmacist. Thirteen papers reported providing tools or specific training on a single topic to pharmacists. The main clinical and therapeutic areas of activity (requiring codified knowledge) were dementia, pain, antipsychotic and cardiovascular medication. Provision of pharmaceutical care, effective multidisciplinary working and care home staff training represented the main areas of practical knowledge. Conclusions: Information regarding training and accreditation processes for care home pharmacists is limited. This study provides insight into potential codified and practical knowledge requirements for pharmacists assuming responsibility for the provision of pharmaceutical care within care homes. Further work involving stakeholders is required to identify the cultural knowledge requirements and to develop a training and accreditation process