Genetic parameters of the first three lactation records in Polish Lowland cattle

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Human Challenge Studies in Endemic Settings

This open access book provides an extensive review of ethical and regulatory issues related to human infection challenge studies, with a particular focus on the expansion of this type of research into endemic settings and/or low- and middle-income countries (LMICs). Human challenge studies (HCS) involve the intentional infection of research participants, and this type of research is rapidly increasing in frequency worldwide. HCS are widely considered to be an especially promising approach to vaccine development, including for pathogens endemic to LMICs. However, challenge studies are sometimes controversial and raise complex ethical issues, some of which are especially salient in endemic and/or LMIC settings. Informed by qualitative interviews with experts in infectious diseases and bioethics, this book highlights areas of ethical consensus and controversy concerning this kind of research. As the first volume to focus on ethical issues associated with human challenge studies, it sets the agenda for further work in this important area of global health research; contributes to current debates in research ethics; and aims to inform regulatory policy and research practice. Insofar as it focuses on HCS in (endemic) settings where diseases are present and/or widespread, much of the analysis provided here is directly relevant to HCS involving pandemic diseases including COVID19

Human Challenge Studies in Endemic Settings

This open access book provides an extensive review of ethical and regulatory issues related to human infection challenge studies, with a particular focus on the expansion of this type of research into endemic settings and/or low- and middle-income countries (LMICs). Human challenge studies (HCS) involve the intentional infection of research participants, and this type of research is rapidly increasing in frequency worldwide. HCS are widely considered to be an especially promising approach to vaccine development, including for pathogens endemic to LMICs. However, challenge studies are sometimes controversial and raise complex ethical issues, some of which are especially salient in endemic and/or LMIC settings. Informed by qualitative interviews with experts in infectious diseases and bioethics, this book highlights areas of ethical consensus and controversy concerning this kind of research. As the first volume to focus on ethical issues associated with human challenge studies, it sets the agenda for further work in this important area of global health research; contributes to current debates in research ethics; and aims to inform regulatory policy and research practice. Insofar as it focuses on HCS in (endemic) settings where diseases are present and/or widespread, much of the analysis provided here is directly relevant to HCS involving pandemic diseases including COVID19

The role of neuroimaging in the diagnosis of the atypical parkinsonian syndromes in clinical practice

Atypical parkinsonian disorders (APD) are a heterogenous group of neurodegenerative diseases such as: progressive supranuclear palsy (PSP), multiple system atrophy (MSA), cortico-basal degeneration (CBD) and dementia with Lewy bodies (DLB). In all of them core symptoms of parkinsonian syndrome are accompanied by many additional clinical features not typical for idiopathic Parkinson's disease (PD) like rapid progression, gaze palsy, apraxia, ataxia, early cognitive decline, dysautonomia and usually poor response to levodopa therapy. In the absence of reliably validated biomarkers the diagnosis is still challenging and mainly based on clinical criteria. However, robust data emerging from routine magnetic resonance imaging (MRI) as well as from many advanced MRI techniques such as: diffusion weighted imaging (DWI) and diffusion tensor imaging (DTI), magnetic resonance spectroscopy (MRS), voxel-based morphometry (VBM), susceptibility-weighted imaging (SWI) may help in differential diagnosis. The main aim of this review is to summarize briefly the most important and acknowledged radiological findings of conventional MRI due to its availability in standard clinical settings. Nevertheless, we present shortly other methods of structural (like TCS – transcranial sonography) and functional imaging (like SPECT – single photon emission computed tomography or PET – positron emission tomography) as well as some selected advanced MRI techniques and their potential future applications in supportive role in distinguishing APD

The association between C-reactive protein concentration and depression in later life is due to poor physical health: results from the Health in Men Study (HIMS)

Background C-reactive protein (CRP) is a non-specific marker of inflammation that has been associated with depression and vascular disease, particularly in men. This study aimed to investigate the association between high CRP concentration and depression while taking physical health into account. Method A cross-sectional study of a community-dwelling sample of 5438 men aged 70+. Participants with scores 7 on the 15-item Geriatric Depression Scale (GDS-15) were considered to display clinically significant depressive symptoms. We measured the serum concentration of CRP with a high-sensitivity assay. The assessment of physical co-morbidity included three components: the Charlson weighted index, self-report of major health events on a standardized questionnaire, and the physical component of the 36-item Short-Form Health Survey (SF-36). Other measured factors included age, native language, education, a standardized socio-economic index, smoking, prior or current history of depression treatment, cognitive impairment (Mini-Mental State Examination score 3 mg/l had an increased odds ratio (OR) [1·59, 95% confidence interval (CI) 1·20–2·11] of being depressed compared to men with CRP 3 mg/l. This association became non-significant once we adjusted the analysis for the measures of physical co-morbidity and other confounding factors (OR 1·22, 95% CI 0·86–1·73). Conclusions The physiological mechanisms that lead to the onset and maintenance of depressive symptoms in older men remain to be determined, but CRP concentration is unlikely to play a significant role in that process.Osvaldo P. Almeida, Paul Norman, Graeme J. Hankey, Konrad Jamrozik and Leon Flicke

Long term survival after evidence based treatment of acute myocardial infarction and revascularisation: follow-up of population based Perth MONICA cohort, 1984-2005

Objective To examine trends in long term survival in patients alive 28 days after myocardial infarction and the impact of evidence based medical treatments and coronary revascularisation during or near the event

Strategic and scientific contributions of human challenge trials for vaccine development: facts versus fantasy

The unprecedented speed of delivery of SARS-CoV-2 pandemic vaccines has redefined the limits for all vaccine development. Beyond the aspirational 100-day timeline for tomorrow's hypothetical pandemic vaccines, there is a sense of optimism that development of other high priority vaccines can be accelerated. Early in the COVID-19 pandemic, an intense and polarised academic and public discourse arose concerning the role of human challenge trials for vaccine development. A case was made for human challenge trials as a powerful tool to establish early proofof-concept of vaccine efficacy in humans, inform vaccine down selection, and address crucial knowledge gaps regarding transmission, pathogenesis, and immune protection. We review the track record of human challenge trials contributing to the development of vaccines for 19 different pathogens and discuss relevant limitations, barriers, and pitfalls. This Review also highlights opportunities for efforts to broaden the scope and boost the effects of human challenge trials, to accelerate all vaccine development.Host-parasite interactio

Light smoking at base-line predicts a higher mortality risk to women than to men; evidence from a cohort with long follow-up

BACKGROUND: There is conflicting evidence as to whether smoking is more harmful to women than to men. The UK Cotton Workers’ Cohort was recruited in the 1960s and contained a high proportion of men and women smokers who were well matched in terms of age, job and length of time in job. The cohort has been followed up for 42 years. METHODS: Mortality in the cohort was analysed using an individual relative survival method and Cox regression. Whether smoking, ascertained at baseline in the 1960s, was more hazardous to women than to men was examined by estimating the relative risk ratio women to men, smokers to never smoked, for light (1–14), medium (15–24), heavy (25+ cigarettes per day) and former smoking. RESULTS: For all-cause mortality relative risk ratios were 1.35 for light smoking at baseline (95% CI 1.07-1.70), 1.15 for medium smoking (95% CI 0.89-1.49) and 1.00 for heavy smoking (95% CI 0.63-1.61). Relative risk ratios for light smoking at baseline for circulatory system disease was 1.42 (95% CI 1.01 to 1.98) and for respiratory disease was 1.89 (95% CI 0.99 to 3.63). Heights of participants provided no explanation for the gender difference. CONCLUSIONS: Light smoking at baseline was shown to be significantly more hazardous to women than to men but the effect decreased as consumption increased indicating a dose response relationship. Heavy smoking was equally hazardous to both genders. This result may help explain the conflicting evidence seen elsewhere. However gender differences in smoking cessation may provide an alternative explanation

Crafting communities: promoting inclusion, empowerment, and learning between older women

While social policy and planning documents are replete with ominous warnings about the cost of an ageing population, this article tells a different story about the productive and self-sustaining networks that exist among older women in the community who do craftwork. From our research conducted in Victoria, Australia during 2007&ndash;2008 we discovered a resilient and committed group of older women quietly and steadily contributing to community fundraising, building social networks, and providing learning opportunities to each other in diverse ways. Through our conversations with nine craftswomen we have been able to articulate clear links between the theory and models commonly espoused in the community development literature and the life-enriching practices used in organising informal community craft group activities. From our interviews with the older women we provide evidence of sustained participation, the generation of social capital, and the fostering of life-long learning. While none of the women we spoke to were trained in community development and did not use language commonly associated with feminist ideology, the relationship between the informal group work with principles of empowerment and self-efficacy were unmistakeable. We conclude with a discussion of the implications of our findings for critical social work practice.<br /