47 results on '"Beenstock, J."'
Search Results
2. Major risk factors for sexual minority young people’s mental and physical health : findings from a county-wide school-based health needs assessment
- Author
-
Clarke, A., Beenstock, J., Lukacs, J.N., Turner, L., and Limmer, M.
- Published
- 2019
3. Public health practitioners’views of the ‘Making Every Contact Count’ initiative and standards for its evaluation
- Author
-
Chisholm, A., Ang-Chen, P., Peters, S., Hart, J., and Beenstock, J.
- Published
- 2019
4. The relationship between parental adverse childhood experiences and the health, well-being and development outcomes of their children:a systematic review
- Author
-
Arnold, R., Ahmed, F., Clarke, A., Quinn, N., Beenstock, J., Holland, P., Arnold, R., Ahmed, F., Clarke, A., Quinn, N., Beenstock, J., and Holland, P.
- Abstract
Objectives A growing body of research is emerging regarding the relationship between parental adverse childhood experiences (ACEs) and negative health, well-being and developmental outcomes in their children. This systematic review seeks to understand the relationship between parental ACEs and the health, well-being and developmental outcomes of their children and whether the relationships differ according to the number and type of parental ACEs. Study design Systematic review. Method The review includes articles published between 2000 and 2021 from studies using quantitative longitudinal methods and multivariate analysis to investigate the relationship between parental ACEs and their offspring's outcomes. Relevant studies were identified through a systematic search of five databases and findings synthesised using a narrative synthesis. This review was registered on PROSPERO (CRD42021274068). Results Nineteen studies met the inclusion criteria and were included in the review. This resulted in a combined population sample of 124,043 parents and 128,400 children. Diversity in measurement of parental ACE exposure and in the type of ACEs measured within the studies precluded a meta-analysis. Offspring of parents exposed to ACEs had a higher risk of a range of negative health, well-being and developmental outcomes. This relationship differs according to the number and type of parental ACEs, with a positive relationship observed between the number of parental ACEs and the risk of negative health, well-being and development outcomes in their children. Conclusions These findings indicate that screening for parental ACEs by health visitors, midwives and other health or social care staff may identify an at-risk population of infants, children and adolescents and improve child outcomes.
- Published
- 2023
5. A qualitative exploration of the barriers to and facilitators of clozapine monitoring in a secure psychiatric setting
- Author
-
Blagden, S., Beenstock, J., Auld, N., Noblett, S., Limmer, M., Blagden, S., Beenstock, J., Auld, N., Noblett, S., and Limmer, M.
- Abstract
Aims and method To explore the beliefs and understanding of staff and patients at a secure mental health unit regarding clozapine monitoring, and to identify barriers to and facilitators of monitoring. Qualitative semi-structured interviews and focus groups were conducted with 17 staff members and six patients. Results Six key themes were identified. The key facilitator of effective monitoring was the motivation of staff to help patients to become independent and facilitate recovery. An important barrier was a lack of clarity around the roles of different staff groups in monitoring. Staff and patients widely supported the establishment of an in-patient clozapine clinic and perceived that it would prepare patients for discharge. Clinical implications An in-patient clozapine clinic is a robust mechanism for clozapine monitoring in secure settings. The barriers and facilitators identified here could be applied to other secure units to guide their systems of clozapine monitoring.
- Published
- 2021
6. Cgi121-tRNA complex
- Author
-
Ceccarelli, D.F., primary, Beenstock, J., additional, Wan, L.C.K., additional, and Sicheri, F., additional
- Published
- 2020
- Full Text
- View/download PDF
7. KEOPS tRNA modifying sub-complex of archaeal Cgi121 and tRNA
- Author
-
Ceccarelli, D.F., primary, Beenstock, J., additional, Mao, D.Y.L., additional, and Sicheri, F., additional
- Published
- 2020
- Full Text
- View/download PDF
8. Public health practitioners' views of the 'Making Every Contact Count' initiative and standards for its evaluation
- Author
-
Chisholm, A., Ang-Chen, P., Peters, S., Hart, J., Beenstock, J., Chisholm, A., Ang-Chen, P., Peters, S., Hart, J., and Beenstock, J.
- Abstract
BACKGROUND: National Health Service England encourages staff to use everyday interactions with patients to discuss healthy lifestyle changes as part of the 'Making Every Contact Count' (MECC) approach. Although healthcare, government and public health organisations are now expected to adopt this approach, evidence is lacking about how MECC is currently implemented in practice. This study explored the views and experiences of those involved in designing, delivering and evaluating MECC. METHODS: We conducted a qualitative study using semi-structured interviews with 13 public health practitioners with a range of roles in implementing MECC across England. Interviews were conducted via telephone, transcribed verbatim and analysed using an inductive thematic approach. RESULTS: Four key themes emerged identifying factors accounting for variations in MECC implementation: (i) 'design, quality and breadth of training', (ii) 'outcomes attended to and measured', (iii) 'engagement levels of trainees and trainers' and (iv) 'system-level influences'. CONCLUSIONS: MECC is considered a valuable public health approach but because organisations interpret MECC differently, staff training varies in nature. Practitioners believe that implementation can be improved, and an evidence-base underpinning MECC developed, by sharing experiences more widely, introducing standardization to staff training and finding better methods for assessing meaningful outcomes.
- Published
- 2019
9. Major risk factors for sexual minority young people's mental and physical health:findings from a county-wide school-based health needs assessment
- Author
-
Clarke, A, Beenstock, J, Lukacs, J N, Turner, L, Limmer, M, Clarke, A, Beenstock, J, Lukacs, J N, Turner, L, and Limmer, M
- Abstract
Background: Childhood health is an important adult health predictor. Sexual orientation is increasingly recognized as influential on children and young people's (CYP) mental and physical health. Methods: Data came from a cross-sectional survey of year 9 children attending schools in two local authorities in the north-west of England, including mental and physical health indicators, and demographic characteristics including sexual orientation. The sample of 8058 represented 67.8% of the eligible population. Data were analysed by sexual orientation, sexual majority or sexual minority. Results: Children reporting their sexual orientation as sexual minority reported worse mental and physical health outcomes and behaviours than sexual majority peers; had higher odds of being lonely (odds ratios (OR) = 8.24, 95% C.I.: 6.56-10.37), having self-harmed (OR = 7.28, 95% C.I.: 5.78-9.15), being bullied (OR = 4.76, 95% C.I.: 3.74-6.05) or perceiving themselves as overweight (OR = 2.40, 95% C.I.: 1.89-3.06). Conclusions: It is important to identify and support children in a sexual minority. Research is required to understand differences between children within sexual minorities and the impact on outcomes and rights. Health and social policy and services, should respond to the vulnerabilities of sexual minority CYP.
- Published
- 2019
10. Major risk factors for sexual minority young people's mental and physical health : findings from a county-wide school-based health needs assessment
- Author
-
Clarke, A, Beenstock, J, Lukacs, J N, Turner, L, Limmer, M, Clarke, A, Beenstock, J, Lukacs, J N, Turner, L, and Limmer, M
- Abstract
Background: Childhood health is an important adult health predictor. Sexual orientation is increasingly recognized as influential on children and young people's (CYP) mental and physical health. Methods: Data came from a cross-sectional survey of year 9 children attending schools in two local authorities in the north-west of England, including mental and physical health indicators, and demographic characteristics including sexual orientation. The sample of 8058 represented 67.8% of the eligible population. Data were analysed by sexual orientation, sexual majority or sexual minority. Results: Children reporting their sexual orientation as sexual minority reported worse mental and physical health outcomes and behaviours than sexual majority peers; had higher odds of being lonely (odds ratios (OR) = 8.24, 95% C.I.: 6.56-10.37), having self-harmed (OR = 7.28, 95% C.I.: 5.78-9.15), being bullied (OR = 4.76, 95% C.I.: 3.74-6.05) or perceiving themselves as overweight (OR = 2.40, 95% C.I.: 1.89-3.06). Conclusions: It is important to identify and support children in a sexual minority. Research is required to understand differences between children within sexual minorities and the impact on outcomes and rights. Health and social policy and services, should respond to the vulnerabilities of sexual minority CYP.
- Published
- 2019
11. Major risk factors for sexual minority young people’s mental and physical health: findings from a county-wide school-based health needs assessment
- Author
-
Clarke, A, primary, Beenstock, J, additional, Lukacs, J N, additional, Turner, L, additional, and Limmer, M, additional
- Published
- 2018
- Full Text
- View/download PDF
12. Public health practitioners’ views of the ‘Making Every Contact Count’ initiative and standards for its evaluation
- Author
-
Chisholm, A, primary, Ang-Chen, P, additional, Peters, S, additional, Hart, J, additional, and Beenstock, J, additional
- Published
- 2018
- Full Text
- View/download PDF
13. Future orientation and smoking cessation: secondary analysis of data from a smoking cessation trial
- Author
-
Beenstock, J, Lindson-Hawley, N, Aveyard, P, Adams, J, and Addiction, Society for the Study of
- Abstract
AIMS: To examine the association between future orientation (how individuals consider and value outcomes in the future) and smoking cessation at 4 weeks and 6 months post quit-date in individuals enrolled in a smoking cessation study. DESIGN: Cohort analysis of randomized controlled trial data. SETTING: UK primary care. PARTICIPANTS: Adults aged ≥18 years smoking ≥15 cigarettes daily, prepared to quit in the next 2 weeks. MEASUREMENTS: Future orientation was measured prior to quitting and at 4 weeks post-quitting using the Consideration of Future Consequences Scale. Smoking cessation at 4 weeks and 6 months was confirmed biochemically. Those lost to follow-up were assumed to not be abstinent. Potential confounders adjusted for were: age, gender, educational attainment, nicotine dependence and longest previous period quit. FINDINGS: A total of 697 participants provided data at baseline; 422 provided information on future orientation at 4 weeks. There was no evidence of an association between future orientation at baseline and abstinence at 4 weeks [adjusted odds ratio (aOR) = 1.05, 95% confidence intervals (CI) 0.80-1.38] or 6 months (aOR = 0.85, 95% CI = 0.60-1.20). There was no change in future orientation from baseline to 4 weeks and no evidence that the change differed between those who were and were not quit at 4 weeks (adjusted regression coefficient = -0.04, 95% CI = -0.16 to 0.08).CONCLUSIONS: In smokers who are prepared to quit in the next 2 weeks, the extent of future orientation is unlikely to be a strong predictor of quitting over 4 weeks or 6 months and any increase in future orientation following quitting is likely to be small.
- Published
- 2016
14. Public health practitioners' views of the 'Making Every Contact Count' initiative and standards for its evaluation.
- Author
-
Chisholm, A, Ang-Chen, P, Peters, S, Hart, J, and Beenstock, J
- Subjects
ATTITUDE (Psychology) ,HEALTH promotion ,INTERVIEWING ,RESEARCH methodology ,MEDICAL personnel ,NATIONAL health services ,PUBLIC health ,STATISTICAL sampling ,TELEPHONES ,QUALITATIVE research ,JUDGMENT sampling ,THEMATIC analysis - Abstract
Background National Health Service England encourages staff to use everyday interactions with patients to discuss healthy lifestyle changes as part of the 'Making Every Contact Count' (MECC) approach. Although healthcare, government and public health organisations are now expected to adopt this approach, evidence is lacking about how MECC is currently implemented in practice. This study explored the views and experiences of those involved in designing, delivering and evaluating MECC. Methods We conducted a qualitative study using semi-structured interviews with 13 public health practitioners with a range of roles in implementing MECC across England. Interviews were conducted via telephone, transcribed verbatim and analysed using an inductive thematic approach. Results Four key themes emerged identifying factors accounting for variations in MECC implementation: (i) 'design, quality and breadth of training', (ii) 'outcomes attended to and measured', (iii) 'engagement levels of trainees and trainers' and (iv) 'system-level influences'. Conclusions MECC is considered a valuable public health approach but because organisations interpret MECC differently, staff training varies in nature. Practitioners believe that implementation can be improved, and an evidence-base underpinning MECC developed, by sharing experiences more widely, introducing standardization to staff training and finding better methods for assessing meaningful outcomes. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
15. Price Discounts on Alcohol in a City in Northern England
- Author
-
Adams, J., primary and Beenstock, J., additional
- Published
- 2012
- Full Text
- View/download PDF
16. The association between time perspective and alcohol consumption in university students: cross-sectional study
- Author
-
Beenstock, J., primary, Adams, J., additional, and White, M., additional
- Published
- 2010
- Full Text
- View/download PDF
17. Structures of KEOPS bound to tRNA reveal functional roles of the kinase Bud32.
- Author
-
Ona Chuquimarca SM, Beenstock J, Daou S, Porat J, Keszei AFA, Yin JZ, Beschauner T, Bayfield MA, Mazhab-Jafari MT, and Sicheri F
- Subjects
- Saccharomyces cerevisiae Proteins metabolism, Saccharomyces cerevisiae Proteins genetics, Saccharomyces cerevisiae Proteins chemistry, Saccharomyces cerevisiae genetics, Saccharomyces cerevisiae metabolism, Models, Molecular, Multienzyme Complexes metabolism, Multienzyme Complexes chemistry, Multienzyme Complexes genetics, Protein Binding, Adenosine Triphosphatases metabolism, Adenosine Triphosphatases chemistry, Adenosine Triphosphatases genetics, Humans, Adenosine analogs & derivatives, Protein Serine-Threonine Kinases, RNA, Transfer metabolism, RNA, Transfer genetics, RNA, Transfer chemistry, Cryoelectron Microscopy
- Abstract
The enzyme complex KEOPS (Kinase, Endopeptidase and Other Proteins of Small size) installs the universally conserved and essential N
6 -threonylcarbamoyl adenosine modification (t6 A) on ANN-decoding tRNAs in eukaryotes and in archaea. KEOPS consists of Cgi121, Kae1, Pcc1, Gon7 and the atypical kinase/ATPase Bud32. Except Gon7, all KEOPS subunits are needed for tRNA modification, and in humans, mutations in all five genes underlie the lethal genetic disease Galloway Mowat Syndrome (GAMOS). Kae1 catalyzes the modification of tRNA, but the specific contributions of Bud32 and the other subunits are less clear. Here we solved cryogenic electron microscopy structures of KEOPS with and without a tRNA substrate. We uncover distinct flexibility of KEOPS-bound tRNA revealing a conformational change that may enable its modification by Kae1. We further identified a contact between a flipped-out base of the tRNA and an arginine residue in C-terminal tail of Bud32 that correlates with the conformational change in the tRNA. We also uncover contact surfaces within the KEOPS-tRNA holo-enzyme substrate complex that are required for Bud32 ATPase regulation and t6 A modification activity. Our findings uncover inner workings of KEOPS including a basis for substrate specificity and why Kae1 depends on all other subunits., Competing Interests: Competing interests: The authors declare no competing interests., (© 2024. The Author(s).)- Published
- 2024
- Full Text
- View/download PDF
18. The HisRS-like domain of GCN2 is a pseudoenzyme that can bind uncharged tRNA.
- Author
-
Yin JZ, Keszei AFA, Houliston S, Filandr F, Beenstock J, Daou S, Kitaygorodsky J, Schriemer DC, Mazhab-Jafari MT, Gingras AC, and Sicheri F
- Subjects
- Binding Sites, Protein Domains, Saccharomyces cerevisiae Proteins metabolism, Saccharomyces cerevisiae Proteins chemistry, Saccharomyces cerevisiae Proteins genetics, Cryoelectron Microscopy, Molecular Docking Simulation, Models, Molecular, Adenosine Triphosphate metabolism, Saccharomyces cerevisiae metabolism, Humans, Histidine metabolism, Histidine chemistry, Phosphorylation, Protein Serine-Threonine Kinases metabolism, Protein Serine-Threonine Kinases chemistry, Protein Serine-Threonine Kinases genetics, RNA, Transfer metabolism, RNA, Transfer chemistry, Protein Binding
- Abstract
GCN2 is a stress response kinase that phosphorylates the translation initiation factor eIF2α to inhibit general protein synthesis when activated by uncharged tRNA and stalled ribosomes. The presence of a HisRS-like domain in GCN2, normally associated with tRNA aminoacylation, led to the hypothesis that eIF2α kinase activity is regulated by the direct binding of this domain to uncharged tRNA. Here we solved the structure of the HisRS-like domain in the context of full-length GCN2 by cryoEM. Structure and function analysis shows the HisRS-like domain of GCN2 has lost histidine and ATP binding but retains tRNA binding abilities. Hydrogen deuterium exchange mass spectrometry, site-directed mutagenesis and computational docking experiments support a tRNA binding model that is partially shifted from that employed by bona fide HisRS enzymes. These results demonstrate that the HisRS-like domain of GCN2 is a pseudoenzyme and advance our understanding of GCN2 regulation and function., Competing Interests: Declaration of interests F.S. is a founder and consultant of Repare Therapeutics and Induxion Therapeutics., (Copyright © 2024 Elsevier Ltd. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
19. A conserved arginine within the αC-helix of Erk1/2 is a latch of autoactivation and of oncogenic capabilities.
- Author
-
Soudah N, Baskin A, Smorodinsky-Atias K, Beenstock J, Ganon Y, Hayouka R, Aboraya M, Livnah O, Ilouz R, and Engelberg D
- Subjects
- Phosphorylation, Humans, Animals, Mice, Cell Line, HEK293 Cells, Enzyme Activation genetics, Mutation, Saccharomyces cerevisiae enzymology, Saccharomyces cerevisiae genetics, Protein Structure, Tertiary, Models, Molecular, Crystallization, Amino Acid Sequence, Arginine metabolism, Mitogen-Activated Protein Kinase 1 chemistry, Mitogen-Activated Protein Kinase 1 genetics, Mitogen-Activated Protein Kinase 1 metabolism, Mitogen-Activated Protein Kinase 3 chemistry, Mitogen-Activated Protein Kinase 3 genetics, Mitogen-Activated Protein Kinase 3 metabolism
- Abstract
Eukaryotic protein kinases (EPKs) adopt an active conformation following phosphorylation of a particular activation loop residue. Most EPKs spontaneously autophosphorylate this residue. While structure-function relationships of the active conformation are essentially understood, those of the "prone-to-autophosphorylate" conformation are unclear. Here, we propose that a site within the αC-helix of EPKs, occupied by Arg in the mitogen-activated protein kinase (MAPK) Erk1/2 (Arg84/65), impacts spontaneous autophosphorylation. MAPKs lack spontaneous autoactivation, but we found that converting Arg84/65 of Erk1/2 to various residues enables spontaneous autophosphorylation. Furthermore, Erk1 molecules mutated in Arg84 are oncogenic. Arg84/65 thus obstructs the adoption of the "prone-to-autophosphorylate" conformation. All MAPKs harbor an Arg that is equivalent to Arg84/65 of Erks, whereas Arg is rarely found at the equivalent position in other EPKs. We observed that Arg84/65 of Erk1/2 interacts with the DFG motif, suggesting that autophosphorylation may be inhibited by the Arg84/65-DFG interactions. Erk1/2s mutated in Arg84/65 autophosphorylate not only the TEY motif, known as critical for catalysis, but also on Thr207/188. Our MS/MS analysis revealed that a large proportion of the Erk2
R65H population is phosphorylated on Thr188 or on Tyr185 + Thr188, and a small fraction is phosphorylated on the TEY motif. No molecules phosphorylated on Thr183 + Thr188 were detected. Thus, phosphorylation of Thr183 and Thr188 is mutually exclusive suggesting that not only TEY-phosphorylated molecules are active but perhaps also those phosphorylated on Tyr185 + Thr188. The effect of mutating Arg84/65 may mimic a physiological scenario in which allosteric effectors cause Erk1/2 activation by autophosphorylation., Competing Interests: Conflict of interest The authors declare that they have no conflicts of interest with the contents of this article., (Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.)- Published
- 2023
- Full Text
- View/download PDF
20. Differential Modulation of the Phosphoproteome by the MAP Kinases Isoforms p38α and p38β.
- Author
-
Melamed Kadosh D, Beenstock J, Engelberg D, and Admon A
- Subjects
- Animals, Humans, Mice, Tumor Suppressor Protein p53 metabolism, Fibroblasts metabolism, Protein Isoforms genetics, Protein Isoforms metabolism, Phosphorylation, p38 Mitogen-Activated Protein Kinases metabolism, Proteome metabolism, Mitogen-Activated Protein Kinase 14 genetics, Mitogen-Activated Protein Kinase 14 metabolism
- Abstract
The p38 members of the mitogen-activated protein kinases (MAPKs) family mediate various cellular responses to stress conditions, inflammatory signals, and differentiation factors. They are constitutively active in chronic inflammatory diseases and some cancers. The differences between their transient effects in response to signals and the chronic effect in diseases are not known. The family is composed of four isoforms, of which p38α seems to be abnormally activated in diseases. p38α and p38β are almost identical in sequence, structure, and biochemical and pharmacological properties, and the specific unique effects of each of them, if any, have not yet been revealed. This study aimed to reveal the specific effects induced by p38α and p38β, both when transiently activated in response to stress and when chronically active. This was achieved via large-scale proteomics and phosphoproteomics analyses using stable isotope labeling of two experimental systems: one, mouse embryonic fibroblasts (MEFs) deficient in each of these p38 kinases and harboring either an empty vector or vectors expressing p38α
WT , p38βWT , or intrinsically active variants of these MAPKs; second, induction of transient stress by exposure of MEFs, p38α-/- , and p38β-/- MEFs to anisomycin. Significant differences in the repertoire of the proteome and phosphoproteome between cells expressing active p38α and p38β suggest distinct roles for each kinase. Interestingly, in both cases, the constitutive activation induced adaptations of the cells to the chronic activity so that known substrates of p38 were downregulated. Within the dramatic effect of p38s on the proteome and phosphoproteome, some interesting affected phosphorylation sites were those found in cancer-associated p53 and Hspb1 (HSP27) proteins and in cytoskeleton-associated proteins. Among these, was the stronger direct phosphorylation by p38α of p53-Ser309, which was validated on the Ser315 in human p53. In summary, this study sheds new light on the differences between chronic and transient p38α and p38β signaling and on the specific targets of these two kinases.- Published
- 2023
- Full Text
- View/download PDF
21. A public health approach to estimating the need for long COVID services.
- Author
-
Pye A, Roberts SR, Blennerhassett A, Iqbal H, Beenstock J, and Iqbal Z
- Subjects
- Humans, SARS-CoV-2, Post-Acute COVID-19 Syndrome, Public Health, Pandemics, COVID-19 epidemiology
- Abstract
Background: The term 'long COVID' describes ongoing symptoms and conditions experienced by people infected with SARS-CoV-2. This paper illustrates how a public health approach was used to influence and inform the development of post-COVID services across two Integrated Care Systems (ICSs)., Methods: A literature review was conducted between October and December 2020 to identify prevalence estimates for long COVID. The prevalence estimates were applied to locally available data on the susceptible population to estimate the number of people with long COVID. They were also used to develop a dashboard to predict fluctuations in the number of people experiencing persistent symptoms over time., Results: A substantial number of people in each ICS may have experienced persistent symptoms or complications as a result of COVID-19. In Lancashire and South Cumbria, it is estimated that 33 000 people may have experienced post-COVID-19 syndrome since the beginning of the pandemic, which will include respiratory or cardiovascular complications., Conclusions: The findings have been valuable in informing early service developments, engaging with managers and clinicians, and supporting applications for funding at a local level. Continued attention to emergent evidence on this topic will be vital in refining estimates and supporting service planning in the longer term., (© The Author(s) 2021. Published by Oxford University Press on behalf of Faculty of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2023
- Full Text
- View/download PDF
22. A suite of in vitro and in vivo assays for monitoring the activity of the pseudokinase Bud32.
- Author
-
Beenstock J, Ona SM, and Sicheri F
- Subjects
- Adenosine Triphosphatases metabolism, Humans, Protein Kinases metabolism, RNA, Transfer metabolism, Saccharomyces cerevisiae metabolism, Archaeal Proteins metabolism, Saccharomyces cerevisiae Proteins metabolism
- Abstract
Bud32 is a member of the protein kinase superfamily that is invariably conserved in all eukaryotic and archaeal organisms. In both of these kingdoms, Bud32 forms part of the KEOPS (Kinase, Endopeptidase and Other Proteins of Small size) complex together with the three other core subunits Kae1, Cgi121 and Pcc1. KEOPS functions to generate the universal and essential tRNA post-transcriptional modification N
6 -theronylcarbamoyl adenosine (t6 A), which is present at position A37 in all tRNAs that bind to codons with an A in the first position (ANN decoding tRNAs) and is essential for the fidelity of translation. Mutations in KEOPS genes in humans underlie the severe genetic disease Galloway-Mowat syndrome, which results in childhood death. KEOPS activity depends on two major functions of Bud32. Firstly, Bud32 facilitates efficient tRNA substrate recruitment to KEOPS and helps in positioning the A37 site of the tRNA in the active site of Kae1, which carries out the t6 A modification reaction. Secondly, the enzymatic activity of Bud32 is required for the ability of KEOPS to modify tRNA. Unlike conventional protein kinases, which employ their enzymatic activity for phosphorylation of protein substrates, Bud32 employs its enzymatic activity to function as an ATPase. Herein, we present a comprehensive suite of assays to monitor the activity of Bud32 in KEOPS in vitro and in vivo. We present protocols for the purification of the archaeal KEOPS proteins and of a tRNA substrate, as well as protocols for monitoring the ATPase activity of Bud32 and for analyzing its role in tRNA binding. We further present a complementary protocol for monitoring the role Bud32 has in cell growth in yeast., (Copyright © 2022 Elsevier Inc. All rights reserved.)- Published
- 2022
- Full Text
- View/download PDF
23. The structural and functional workings of KEOPS.
- Author
-
Beenstock J and Sicheri F
- Subjects
- Adenosine metabolism, Animals, Anion Exchange Protein 1, Erythrocyte chemistry, Anion Exchange Protein 1, Erythrocyte metabolism, Archaea genetics, Archaea metabolism, Conserved Sequence, Gene Expression Regulation, Hernia, Hiatal metabolism, Hernia, Hiatal pathology, Humans, Intracellular Signaling Peptides and Proteins chemistry, Intracellular Signaling Peptides and Proteins genetics, Intracellular Signaling Peptides and Proteins metabolism, Microcephaly metabolism, Microcephaly pathology, Models, Molecular, Nephrosis metabolism, Nephrosis pathology, Nuclear Proteins chemistry, Nuclear Proteins genetics, Nuclear Proteins metabolism, Protein Conformation, Protein Serine-Threonine Kinases chemistry, Protein Serine-Threonine Kinases genetics, Protein Serine-Threonine Kinases metabolism, RNA, Transfer metabolism, Saccharomyces cerevisiae genetics, Saccharomyces cerevisiae metabolism, Saccharomyces cerevisiae Proteins chemistry, Saccharomyces cerevisiae Proteins metabolism, Transcription Factors chemistry, Transcription Factors genetics, Transcription Factors metabolism, Adenosine analogs & derivatives, Anion Exchange Protein 1, Erythrocyte genetics, Hernia, Hiatal genetics, Microcephaly genetics, Nephrosis genetics, RNA, Transfer genetics, Saccharomyces cerevisiae Proteins genetics
- Abstract
KEOPS (Kinase, Endopeptidase and Other Proteins of Small size) is a five-subunit protein complex that is highly conserved in eukaryotes and archaea and is essential for the fitness of cells and for animal development. In humans, mutations in KEOPS genes underlie Galloway-Mowat syndrome, which manifests in severe microcephaly and renal dysfunction that lead to childhood death. The Kae1 subunit of KEOPS catalyzes the universal and essential tRNA modification N6-threonylcarbamoyl adenosine (t6A), while the auxiliary subunits Cgi121, the kinase/ATPase Bud32, Pcc1 and Gon7 play a supporting role. Kae1 orthologs are also present in bacteria and mitochondria but function in distinct complexes with proteins that are not related in structure or function to the auxiliary subunits of KEOPS. Over the past 15 years since its discovery, extensive study in the KEOPS field has provided many answers towards understanding the roles that KEOPS plays in cells and in human disease and how KEOPS carries out these functions. In this review, we provide an overview into recent advances in the study of KEOPS and illuminate exciting future directions., (© The Author(s) 2021. Published by Oxford University Press on behalf of Nucleic Acids Research.)
- Published
- 2021
- Full Text
- View/download PDF
24. Bipartite binding of the N terminus of Skp2 to cyclin A.
- Author
-
Kelso S, Orlicky S, Beenstock J, Ceccarelli DF, Kurinov I, Gish G, and Sicheri F
- Subjects
- Binding Sites, Cyclin A chemistry, Humans, Molecular Docking Simulation, Protein Binding, S-Phase Kinase-Associated Proteins metabolism, Cyclin A metabolism, S-Phase Kinase-Associated Proteins chemistry
- Abstract
Skp2 and cyclin A are cell-cycle regulators that control the activity of CDK2. Cyclin A acts as an activator and substrate recruitment factor of CDK2, while Skp2 mediates the ubiquitination and subsequent destruction of the CDK inhibitor protein p27. The N terminus of Skp2 can interact directly with cyclin A but is not required for p27 ubiquitination. To gain insight into this poorly understood interaction, we have solved the 3.2 Å X-ray crystal structure of the N terminus of Skp2 bound to cyclin A. The structure reveals a bipartite mode of interaction with two motifs in Skp2 recognizing two discrete surfaces on cyclin A. The uncovered binding mechanism allows for a rationalization of the inhibitory effect of Skp2 on CDK2-cyclin A kinase activity toward the RxL motif containing substrates and raises the possibility that other intermolecular regulators and substrates may use similar non-canonical modes of interaction for cyclin targeting., Competing Interests: Declaration of interests F.S. is a founder and consultant of Repare Therapeutics., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
25. A qualitative exploration of the barriers to and facilitators of clozapine monitoring in a secure psychiatric setting.
- Author
-
Blagden S, Beenstock J, Auld N, Noblett S, and Limmer M
- Abstract
Aims and Method: To explore the beliefs and understanding of staff and patients at a secure mental health unit regarding clozapine monitoring, and to identify barriers to and facilitators of monitoring. Qualitative semi-structured interviews and focus groups were conducted with 17 staff members and six patients., Results: Six key themes were identified. The key facilitator of effective monitoring was the motivation of staff to help patients to become independent and facilitate recovery. An important barrier was a lack of clarity around the roles of different staff groups in monitoring. Staff and patients widely supported the establishment of an in-patient clozapine clinic and perceived that it would prepare patients for discharge., Clinical Implications: An in-patient clozapine clinic is a robust mechanism for clozapine monitoring in secure settings. The barriers and facilitators identified here could be applied to other secure units to guide their systems of clozapine monitoring.
- Published
- 2021
- Full Text
- View/download PDF
26. Changes in daily mental health service use and mortality at the commencement and lifting of COVID-19 'lockdown' policy in 10 UK sites: a regression discontinuity in time design.
- Author
-
Bakolis I, Stewart R, Baldwin D, Beenstock J, Bibby P, Broadbent M, Cardinal R, Chen S, Chinnasamy K, Cipriani A, Douglas S, Horner P, Jackson CA, John A, Joyce DW, Lee SC, Lewis J, McIntosh A, Nixon N, Osborn D, Phiri P, Rathod S, Smith T, Sokal R, Waller R, and Landau S
- Subjects
- Adolescent, Aged, Child, Communicable Disease Control, Humans, Policy, SARS-CoV-2, United Kingdom epidemiology, COVID-19, Mental Health Services
- Abstract
Objectives: To investigate changes in daily mental health (MH) service use and mortality in response to the introduction and the lifting of the COVID-19 'lockdown' policy in Spring 2020., Design: A regression discontinuity in time (RDiT) analysis of daily service-level activity., Setting and Participants: Mental healthcare data were extracted from 10 UK providers., Outcome Measures: Daily (weekly for one site) deaths from all causes, referrals and discharges, inpatient care (admissions, discharges, caseloads) and community services (face-to-face (f2f)/non-f2f contacts, caseloads): Adult, older adult and child/adolescent mental health; early intervention in psychosis; home treatment teams and liaison/Accident and Emergency (A&E). Data were extracted from 1 Jan 2019 to 31 May 2020 for all sites, supplemented to 31 July 2020 for four sites. Changes around the commencement and lifting of COVID-19 'lockdown' policy (23 March and 10 May, respectively) were estimated using a RDiT design with a difference-in-difference approach generating incidence rate ratios (IRRs), meta-analysed across sites., Results: Pooled estimates for the lockdown transition showed increased daily deaths (IRR 2.31, 95% CI 1.86 to 2.87), reduced referrals (IRR 0.62, 95% CI 0.55 to 0.70) and reduced inpatient admissions (IRR 0.75, 95% CI 0.67 to 0.83) and caseloads (IRR 0.85, 95% CI 0.79 to 0.91) compared with the pre lockdown period. All community services saw shifts from f2f to non-f2f contacts, but varied in caseload changes. Lift of lockdown was associated with reduced deaths (IRR 0.42, 95% CI 0.27 to 0.66), increased referrals (IRR 1.36, 95% CI 1.15 to 1.60) and increased inpatient admissions (IRR 1.21, 95% CI 1.04 to 1.42) and caseloads (IRR 1.06, 95% CI 1.00 to 1.12) compared with the lockdown period. Site-wide activity, inpatient care and community services did not return to pre lockdown levels after lift of lockdown, while number of deaths did. Between-site heterogeneity most often indicated variation in size rather than direction of effect., Conclusions: MH service delivery underwent sizeable changes during the first national lockdown, with as-yet unknown and unevaluated consequences., Competing Interests: Competing interests: RC consults for Campden Instruments Ltd. and receives royalties from Cambridge University Press, Cambridge Enterprise and Routledge. DB reports royalties from Wiley publishers. AC reports research funding from Angelini Pharma and personal fees from INCiPiT, CARIPLO Foundation and Angelini Pharma. AM reports research funding from The Sackler Trust and personal fees from Janssen and Illumina. PP reports research funding from Novo Nordisk and royalties from John Wiley & Sons. SR reports education support from Janssen, Otsuka and Lundbeck. RS reports research support from Janssen, GSK and Takeda and royalties from Oxford University Press., (© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY. Published by BMJ.)
- Published
- 2021
- Full Text
- View/download PDF
27. A substrate binding model for the KEOPS tRNA modifying complex.
- Author
-
Beenstock J, Ona SM, Porat J, Orlicky S, Wan LCK, Ceccarelli DF, Maisonneuve P, Szilard RK, Yin Z, Setiaputra D, Mao DYL, Khan M, Raval S, Schriemer DC, Bayfield MA, Durocher D, and Sicheri F
- Subjects
- Archaeal Proteins genetics, Archaeal Proteins metabolism, Crystallography, X-Ray, Methanocaldococcus genetics, Models, Molecular, Multiprotein Complexes genetics, Multiprotein Complexes metabolism, Nucleic Acid Conformation, Protein Binding, Protein Domains, RNA, Transfer genetics, RNA, Transfer metabolism, RNA, Transfer, Lys chemistry, RNA, Transfer, Lys genetics, RNA, Transfer, Lys metabolism, Archaeal Proteins chemistry, Methanocaldococcus metabolism, Multiprotein Complexes chemistry, RNA, Transfer chemistry
- Abstract
The KEOPS complex, which is conserved across archaea and eukaryotes, is composed of four core subunits; Pcc1, Kae1, Bud32 and Cgi121. KEOPS is crucial for the fitness of all organisms examined. In humans, pathogenic mutations in KEOPS genes lead to Galloway-Mowat syndrome, an autosomal-recessive disease causing childhood lethality. Kae1 catalyzes the universal and essential tRNA modification N
6 -threonylcarbamoyl adenosine, but the precise roles of all other KEOPS subunits remain an enigma. Here we show using structure-guided studies that Cgi121 recruits tRNA to KEOPS by binding to its 3' CCA tail. A composite model of KEOPS bound to tRNA reveals that all KEOPS subunits form an extended tRNA-binding surface that we have validated in vitro and in vivo to mediate the interaction with the tRNA substrate and its modification. These findings provide a framework for understanding the inner workings of KEOPS and delineate why all KEOPS subunits are essential.- Published
- 2020
- Full Text
- View/download PDF
28. Online behaviour change technique training to support healthcare staff 'Make Every Contact Count'.
- Author
-
Chisholm A, Byrne-Davis L, Peters S, Beenstock J, Gilman S, and Hart J
- Subjects
- Adult, Communication, England, Female, Health Personnel statistics & numerical data, Humans, Learning, Male, Middle Aged, Prospective Studies, State Medicine, Surveys and Questionnaires, Young Adult, Education, Distance, Health Behavior, Health Personnel education, Health Personnel psychology, Professional-Patient Relations
- Abstract
Background: National Health Service (NHS) staff support service users to change health-related behaviours such as smoking, alcohol consumption, diet and physical activity. It can be challenging to discuss behaviour changes with service users hence training is needed to equip staff with up-to-date, evidence-based behaviour change skills. In order to identify how training may help to improve health professional skills in this area, this study evaluated change in professionals' behavioural determinants following an online behaviour change skills module as part of Making Every Contact Count (MECC) training., Methods: This evaluation comprised a within-subject design in which staff from one Northwest England NHS Trust completed a 9-item survey immediately before and after training. This prospective survey identified behavioural determinants regarding adhering to MECC recommendations to hold health conversations with service users and provided written comments about their training experiences. Individuals working within the Trust in clinical or non-clinical roles were eligible to take part and were invited to contribute to the evaluation upon uptake of their usual NHS staff online training programmes., Results: Of participants completing the evaluation (n=206), 12 professional cadres accessed the module, most being female (91%), nurses/midwives (43%), working in children and family services (48%), aged 22 - 62 years. Eight behavioural determinants increased significantly following training, with effect sizes ranging from sizes ranging from 0.27 to 0.51; 'identity' did not change. Content analysis of written feedback (n=256) indicates that training enhanced staff behaviour change skills, modelled a productive and specific method of adopting a patient-led approach to behaviour change conversations, and identified that staff may require further support with embedding skills in practice., Conclusions: Behaviour change science can be translated into useful learning for NHS staff. Online training can engage staff in learning about behaviour change skills and increase their behavioural determinants to adopt these skills in practice.
- Published
- 2020
- Full Text
- View/download PDF
29. Implementing National Institute for Health and Care Excellence smoke-free guidance in a secure facility: an evaluation of the prescribing costs in clozapine users.
- Author
-
Noblett S, Beenstock J, Noblett J, Ireland J, and Ormiston S
- Abstract
Aims and method The increased rates of smoking in people with mental illness is well documented, and establishing smoke-free mental health environments has been emphasised over recent years. This article examines the financial costs of implementing smoke free guidance and assesses the cost associated with patients who were prescribed clozapine and who committed to stopping smoking cigarettes for the duration of the study period., Results: Patients (38) who were prescribed clozapine were included in the study. A moderate reduction in dose was noted with a moderate reduction in prescribing costs. The total increase in cost for the whole group, however, was £17 624, largely due to the use of nicotine replacement therapy and an increase in the number of clozapine assay tests. Clinical implications Further studies on implementing this important policy change are needed. The positive effects must be balanced with increased financial pressure on Mental Health Trusts. Declarations of interest None.
- Published
- 2018
- Full Text
- View/download PDF
30. How Do Protein Kinases Take a Selfie (Autophosphorylate)?
- Author
-
Beenstock J, Mooshayef N, and Engelberg D
- Subjects
- Allosteric Regulation, Allosteric Site, Amino Acid Motifs, Biocatalysis, Catalytic Domain, Gene Expression, Humans, Phosphorylation, Protein Conformation, alpha-Helical, Protein Conformation, beta-Strand, Protein Kinases genetics, Protein Kinases metabolism, Protein Multimerization, Proteome genetics, Proteome metabolism, Protein Interaction Domains and Motifs, Protein Kinases chemistry, Proteome chemistry
- Abstract
Eukaryotic protein kinases (EPKs) control most biological processes and play central roles in many human diseases. To become catalytically active, EPKs undergo conversion from an inactive to an active conformation, an event that depends upon phosphorylation of their activation loop. Intriguingly, EPKs can use their own catalytic activity to achieve this critical phosphorylation. In other words, paradoxically, EPKs catalyze autophosphorylation when supposedly in their inactive state. This indicates the existence of another important conformation that specifically permits autophosphorylation at the activation loop, which in turn imposes adoption of the active conformation. This can be considered a prone-to-autophosphorylate conformation. Recent findings suggest that in prone-to-autophosphorylate conformations catalytic motifs are aligned allosterically, by dimerization or by regulators, and support autophosphorylation in cis or trans., (Copyright © 2016 Elsevier Ltd. All rights reserved.)
- Published
- 2016
- Full Text
- View/download PDF
31. p38β Mitogen-Activated Protein Kinase Modulates Its Own Basal Activity by Autophosphorylation of the Activating Residue Thr180 and the Inhibitory Residues Thr241 and Ser261.
- Author
-
Beenstock J, Melamed D, Mooshayef N, Mordechay D, Garfinkel BP, Ahn NG, Admon A, and Engelberg D
- Subjects
- Animals, Catalytic Domain, Cell Differentiation, Cell Line, Fibroblasts cytology, Fibroblasts metabolism, HEK293 Cells, Humans, Mice, Mitogen-Activated Protein Kinase 11 chemistry, Phosphorylation, Bone and Bones metabolism, Mitogen-Activated Protein Kinase 11 metabolism, Muscles metabolism, Serine metabolism, Threonine metabolism
- Abstract
Many enzymes are self-regulated and can either inhibit or enhance their own catalytic activity. Enzymes that do both are extremely rare. Many protein kinases autoactivate by autophosphorylating specific sites at their activation loop and are inactivated by phosphatases. Although mitogen-activated protein kinases (MAPKs) are usually activated by dual phosphorylation catalyzed by MAPK kinases (MAPKKs), the MAPK p38β is exceptional and is capable of self-activation by cis autophosphorylation of its activation loop residue T180. We discovered that p38β also autophosphorylates in trans two previously unknown sites residing within a MAPK-specific structural element known as the MAPK insert: T241 and S261. Whereas phosphorylation of T180 evokes catalytic activity, phosphorylation of S261 reduces the activity of T180-phosphorylated p38β, and phosphorylation of T241 reduces its autophosphorylation in trans Both phosphorylations do not affect the activity of dually phosphorylated p38β. T241 of p38β is found phosphorylated in vivo in bone and muscle tissues. In myogenic cell lines, phosphorylation of p38β residue T241 is correlated with differentiation to myotubes. T241 and S261 are also autophosphorylated in intrinsically active variants of p38α, but in this protein, they probably play a different role. We conclude that p38β is an unusual enzyme that automodulates its basal, MAPKK-independent activity by several autophosphorylation events, which enhance and suppress its catalytic activity., (Copyright © 2016, American Society for Microbiology. All Rights Reserved.)
- Published
- 2016
- Full Text
- View/download PDF
32. Tighter αC-helix-αL16-helix interactions seem to make p38α less prone to activation by autophosphorylation than Hog1.
- Author
-
Tesker M, Selamat SE, Beenstock J, Hayouka R, Livnah O, and Engelberg D
- Subjects
- Mitogen-Activated Protein Kinase 14 genetics, Mitogen-Activated Protein Kinase 14 metabolism, Mitogen-Activated Protein Kinases genetics, Mitogen-Activated Protein Kinases metabolism, Phosphorylation, Protein Structure, Secondary, Saccharomyces cerevisiae genetics, Saccharomyces cerevisiae Proteins genetics, Saccharomyces cerevisiae Proteins metabolism, Mitogen-Activated Protein Kinase 14 chemistry, Mitogen-Activated Protein Kinases chemistry, Saccharomyces cerevisiae enzymology, Saccharomyces cerevisiae Proteins chemistry
- Abstract
Many eukaryotic protein kinases (EPKs) are autoactivated through autophosphorylation of their activation loop. Mitogen-activated protein (MAP) kinases do not autophosphorylate spontaneously; relying instead upon mitogen-activated protein kinase (MAPK) kinases (MKKs) for their activation loop phosphorylation. Yet, in previous studies we identified mutations in the yeast MAPK high osmolarity glycerol (Hog1) that render it capable of spontaneous autophosphorylation and consequently intrinsically active (MKK-independent). Four of the mutations occurred in hydrophobic residues, residing in the αC-helix, which is conserved in all EPKs, and in the αL16-helix that is unique to MAPKs. These four residues interact together forming a structural element termed 'hydrophobic core'. A similar element exists in the Hog1's mammalian orthologues p38s. Here we show that the 'hydrophobic core' is a loose suppressor of Hog1's autophosphorylation. We inserted 18 point mutations into this core, 17 of which were able to render Hog1 MKK-independent. In p38s, however, only a very few mutations in the equivalent residues rendered these proteins intrinsically active. Structural analysis revealed that a salt bridge between the αC-helix and the αL16-helix that exists in p38α may not exist in Hog1. This bond further stabilizes the 'hydrophobic core' of p38, making p38 less prone to de-repressing its concealed autophosphorylation. Mutating equivalent hydrophobic residues in Jnk1 and Erk2 has no effect on their autophosphorylation. We propose that specific structural elements developed in the course of evolution to suppress spontaneous autophosphorylation of Hog1/p38. The suppressors were kept wobbly, probably to allow activation by induced autophosphorylation, but became stricter in mammalian p38s than in the yeast Hog1., (© 2016 The Author(s).)
- Published
- 2016
- Full Text
- View/download PDF
33. Intrinsically active variants of Erk oncogenically transform cells and disclose unexpected autophosphorylation capability that is independent of TEY phosphorylation.
- Author
-
Smorodinsky-Atias K, Goshen-Lago T, Goldberg-Carp A, Melamed D, Shir A, Mooshayef N, Beenstock J, Karamansha Y, Darlyuk-Saadon I, Livnah O, Ahn NG, Admon A, and Engelberg D
- Subjects
- Amino Acid Motifs, Animals, Cell Transformation, Neoplastic genetics, Extracellular Signal-Regulated MAP Kinases metabolism, HEK293 Cells, Humans, MAP Kinase Signaling System, Mice, Mice, Nude, NIH 3T3 Cells, Phosphorylation, Proto-Oncogene Mas, Rats, Cell Transformation, Neoplastic metabolism, Extracellular Signal-Regulated MAP Kinases genetics, Mutation, Missense
- Abstract
The receptor-tyrosine kinase (RTK)/Ras/Raf pathway is an essential cascade for mediating growth factor signaling. It is abnormally overactive in almost all human cancers. The downstream targets of the pathway are members of the extracellular regulated kinases (Erk1/2) family, suggesting that this family is a mediator of the oncogenic capability of the cascade. Although all oncogenic mutations in the pathway result in strong activation of Erks, activating mutations in Erks themselves were not reported in cancers. Here we used spontaneously active Erk variants to check whether Erk's activity per se is sufficient for oncogenic transformation. We show that Erk1(R84S) is an oncoprotein, as NIH3T3 cells that express it form foci in tissue culture plates, colonies in soft agar, and tumors in nude mice. We further show that Erk1(R84S) and Erk2(R65S) are intrinsically active due to an unusual autophosphorylation activity they acquire. They autophosphorylate the activatory TEY motif and also other residues, including the critical residue Thr-207 (in Erk1)/Thr-188 (in Erk2). Strikingly, Erk2(R65S) efficiently autophosphorylates its Thr-188 even when dually mutated in the TEY motif. Thus this study shows that Erk1 can be considered a proto-oncogene and that Erk molecules possess unusual autoregulatory properties, some of them independent of TEY phosphorylation., (© 2016 Smorodinsky-Atias, Goshen-Lago, et al. This article is distributed by The American Society for Cell Biology under license from the author(s). Two months after publication it is available to the public under an Attribution–Noncommercial–Share Alike 3.0 Unported Creative Commons License (http://creativecommons.org/licenses/by-nc-sa/3.0).)
- Published
- 2016
- Full Text
- View/download PDF
34. Are health and well-being strategies in England fit for purpose? A thematic content analysis.
- Author
-
Beenstock J, Sowden S, Hunter DJ, and White M
- Subjects
- England, Humans, Local Government, Program Evaluation, Public Health Administration legislation & jurisprudence, Health Promotion legislation & jurisprudence, Health Promotion methods, Health Services Needs and Demand
- Abstract
Background: Since 1 April 2013, local authority (LA) health and well-being boards (HWBs) in England are required to publish a health and well-being strategy (HWS). HWSs should identify how population health needs are to be addressed. The extent to which this has been achieved is not known. We analysed HWSs to assess how LAs have interpreted statutory guidance, how evidence has been used within HWSs and the relationship of HWSs to Joint Strategic Needs Assessments (JSNAs)., Methods: Qualitative thematic content analysis of a random sample of one-third of upper tier LA HWSs in 2013-14., Results: Fifty out of 152 LAs were sampled and 47 HWSs analysed. Strategies varied in timescale, length and structure. The term 'evidence' was used most commonly referring to local need, rather than evidence of effectiveness. All, except two, referred to JSNAs., Conclusions: HWSs are dominated by evidence of need and could be strengthened by greater use of evidence of effectiveness for public health interventions. Public health agencies and academics can support the development of effective HWSs by improving the accessibility of evidence and conducting research when evidence is absent. To strengthen HWSs' impact, the statutory guidance should clarify the distinction between evidence of need and evidence of effectiveness., (© The Author 2014. Published by Oxford University Press on behalf of Faculty of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2015
- Full Text
- View/download PDF
35. Future orientation and smoking cessation: secondary analysis of data from a smoking cessation trial.
- Author
-
Beenstock J, Lindson-Hawley N, Aveyard P, and Adams J
- Subjects
- Adult, Female, Humans, Male, Middle Aged, Randomized Controlled Trials as Topic, Risk Factors, Smoking therapy, Time Factors, Treatment Outcome, United Kingdom, Motivation, Orientation, Smoking psychology, Smoking Cessation psychology
- Abstract
Aims: To examine the association between future orientation (how individuals consider and value outcomes in the future) and smoking cessation at 4 weeks and 6 months post quit-date in individuals enrolled in a smoking cessation study., Design: Cohort analysis of randomized controlled trial data., Setting: UK primary care., Participants: Adults aged ≥18 years smoking ≥15 cigarettes daily, prepared to quit in the next 2 weeks., Measurements: Future orientation was measured prior to quitting and at 4 weeks post-quitting using the Consideration of Future Consequences Scale. Smoking cessation at 4 weeks and 6 months was confirmed biochemically. Those lost to follow-up were assumed to not be abstinent. Potential confounders adjusted for were: age, gender, educational attainment, nicotine dependence and longest previous period quit., Findings: A total of 697 participants provided data at baseline; 422 provided information on future orientation at 4 weeks. There was no evidence of an association between future orientation at baseline and abstinence at 4 weeks [adjusted odds ratio (aOR) = 1.05, 95% confidence intervals (CI) 0.80-1.38] or 6 months (aOR = 0.85, 95% CI = 0.60-1.20). There was no change in future orientation from baseline to 4 weeks and no evidence that the change differed between those who were and were not quit at 4 weeks (adjusted regression coefficient = -0.04, 95% CI = -0.16 to 0.08)., Conclusions: In smokers who are prepared to quit in the next 2 weeks, the extent of future orientation is unlikely to be a strong predictor of quitting over 4 weeks or 6 months and any increase in future orientation following quitting is likely to be small., (© 2014 Society for the Study of Addiction.)
- Published
- 2014
- Full Text
- View/download PDF
36. The p38β mitogen-activated protein kinase possesses an intrinsic autophosphorylation activity, generated by a short region composed of the α-G helix and MAPK insert.
- Author
-
Beenstock J, Ben-Yehuda S, Melamed D, Admon A, Livnah O, Ahn NG, and Engelberg D
- Subjects
- Amino Acid Sequence, Biocatalysis, HEK293 Cells, Humans, Isoenzymes chemistry, Molecular Sequence Data, Phosphorylation, Sequence Homology, Amino Acid, p38 Mitogen-Activated Protein Kinases chemistry, Isoenzymes metabolism, Mitogen-Activated Protein Kinases metabolism, p38 Mitogen-Activated Protein Kinases metabolism
- Abstract
Protein kinases are regulated by a large number of mechanisms that vary from one kinase to another. However, a fundamental activation mechanism shared by all protein kinases is phosphorylation of a conserved activation loop threonine residue. This is achieved in many cases via autophosphorylation. The mechanism and structural basis for autophosphorylation are not clear and are in fact enigmatic because this phosphorylation occurs when the kinase is in its inactive conformation. Unlike most protein kinases, MAP kinases are not commonly activated by autophosphorylation but rather by MEK-dependent phosphorylation. Here we show that p38β, a p38 isoform that is almost identical to p38α, is exceptional and spontaneously autoactivates by autophosphorylation. We identified a 13-residue-long region composed of part of the αG-helix and the MAPK insert that triggers the intrinsic autophosphorylation activity of p38β. When inserted into p38α, this fragment renders it spontaneously active in vitro and in mammalian cells. We further found that an interaction between the N terminus and a particular region of the C-terminal extension suppresses the intrinsic autophosphorylation of p38β in mammalian cells. Thus, this study identified the structural motif responsible for the unique autophosphorylation capability of p38β and the motif inhibiting this activity in living cells. It shows that the MAPK insert and C-terminal extension, structural motifs that are unique to MAPKs, play a critical role in controlling autophosphorylation., (© 2014 by The American Society for Biochemistry and Molecular Biology, Inc.)
- Published
- 2014
- Full Text
- View/download PDF
37. Mnk2 alternative splicing modulates the p38-MAPK pathway and impacts Ras-induced transformation.
- Author
-
Maimon A, Mogilevsky M, Shilo A, Golan-Gerstl R, Obiedat A, Ben-Hur V, Lebenthal-Loinger I, Stein I, Reich R, Beenstock J, Zehorai E, Andersen CL, Thorsen K, Ørntoft TF, Davis RJ, Davidson B, Mu D, and Karni R
- Subjects
- Active Transport, Cell Nucleus, Animals, Mice, Protein Binding, Protein Serine-Threonine Kinases genetics, ras Proteins metabolism, Alternative Splicing, Cell Nucleus metabolism, Cell Transformation, Neoplastic metabolism, MAP Kinase Signaling System, Protein Serine-Threonine Kinases metabolism, p38 Mitogen-Activated Protein Kinases metabolism
- Abstract
The kinase Mnk2 is a substrate of the MAPK pathway and phosphorylates the translation initiation factor eIF4E. In humans, MKNK2, the gene encoding for Mnk2, is alternatively spliced yielding two splicing isoforms with differing last exons: Mnk2a, which contains a MAPK-binding domain, and Mnk2b, which lacks it. We found that the Mnk2a isoform is downregulated in breast, lung, and colon tumors and is tumor suppressive. Mnk2a directly interacts with, phosphorylates, activates, and translocates p38α-MAPK into the nucleus, leading to activation of its target genes, increasing cell death and suppression of Ras-induced transformation. Alternatively, Mnk2b is pro-oncogenic and does not activate p38-MAPK, while still enhancing eIF4E phosphorylation. We further show that Mnk2a colocalization with p38α-MAPK in the nucleus is both required and sufficient for its tumor-suppressive activity. Thus, Mnk2a downregulation by alternative splicing is a tumor suppressor mechanism that is lost in some breast, lung, and colon tumors., (Copyright © 2014 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2014
- Full Text
- View/download PDF
38. What helps and hinders midwives in engaging with pregnant women about stopping smoking? A cross-sectional survey of perceived implementation difficulties among midwives in the North East of England.
- Author
-
Beenstock J, Sniehotta FF, White M, Bell R, Milne EM, and Araujo-Soares V
- Subjects
- Cross-Sectional Studies, England, Female, Health Care Surveys, Humans, Pregnancy, Principal Component Analysis, Referral and Consultation, Guideline Adherence, Health Knowledge, Attitudes, Practice, Midwifery, Prenatal Care, Smoking Cessation
- Abstract
Background: Around 5,000 miscarriages and 300 perinatal deaths per year result from maternal smoking in the United Kingdom. In the northeast of England, 22% of women smoke at delivery compared to 14% nationally. Midwives have designated responsibilities to help pregnant women stop smoking. We aimed to assess perceived implementation difficulties regarding midwives' roles in smoking cessation in pregnancy., Methods: A self-completed, anonymous survey was sent to all midwives in northeast England (n = 1,358) that explores the theoretical explanations for implementation difficulties of four behaviours recommended in the National Institute for Health and Clinical Excellence (NICE) guidance: (a) asking a pregnant woman about her smoking behaviour, (b) referring to the stop-smoking service, (c) giving advice about smoking behaviour, and (d) using a carbon monoxide monitor. Questions covering Michie et al.'s theoretical domain framework (TDF), describing 11 domains of hypothesised behavioural determinants (i.e., 'knowledge', 'skills', 'social/professional role/identity', 'beliefs about capabilities', 'beliefs about consequences', 'motivation and goals', 'memory', 'attention and decision processes', 'environmental context and resources', 'social influences', 'emotion', and 'self-regulation/action planning'), were used to describe perceived implementation difficulties, predict self-reported implementation behaviours, and explore relationships with demographic and professional variables., Results: The overall response rate was 43% (n = 589). The number of questionnaires analysed was 364, following removal of the delivery-unit midwives, who are not directly involved in providing smoking-cessation services. Participants reported few implementation difficulties, high levels of motivation for all four behaviours and identified smoking-cessation work with their role. Midwives were less certain about the consequences of, and the environmental context and resources available for, engaging in this work relative to other TDF domains. All domains were highly correlated. A principal component analysis showed that a single factor ('propensity to act'), derived from all domains, explained 66% of variance in theoretical domain measures. The 'propensity to act' was predictive of the self-reported behaviour 'Refer all women who smoke……to NHS Stop Smoking Services' and mediated the relationship between demographic variables, such as midwives' main place of work, and behaviour., Conclusions: Our findings advance understanding of what facilitates and inhibits midwives' guideline implementation behaviours in relation to smoking cessation and will inform the development of current practice and new interventions. Using the TDF as a self-completion questionnaire is innovative, and this study supports previous research that the TDF is an appropriate tool to understand the behaviour of healthcare professionals.
- Published
- 2012
- Full Text
- View/download PDF
39. Osmostress induces autophosphorylation of Hog1 via a C-terminal regulatory region that is conserved in p38α.
- Author
-
Maayan I, Beenstock J, Marbach I, Tabachnick S, Livnah O, and Engelberg D
- Subjects
- Fungal Proteins chemistry, HEK293 Cells, Humans, MAP Kinase Kinase 6 metabolism, MAP Kinase Signaling System, Mitogen-Activated Protein Kinases metabolism, Models, Genetic, Mutation, Osmotic Pressure, Phosphorylation, Plasmids metabolism, Protein Structure, Tertiary, Saccharomyces cerevisiae Proteins metabolism, Gene Expression Regulation, Enzymologic, Mitogen-Activated Protein Kinase 14 metabolism, Mitogen-Activated Protein Kinases genetics, Saccharomyces cerevisiae Proteins genetics
- Abstract
Many protein kinases require phosphorylation at their activation loop for induction of catalysis. Mitogen-activated protein kinases (MAPKs) are activated by a unique mode of phosphorylation, on neighboring Tyrosine and Threonine residues. Whereas many kinases obtain their activation via autophosphorylation, MAPKs are usually phosphorylated by specific, dedicated, MAPK kinases (MAP2Ks). Here we show however, that the yeast MAPK Hog1, known to be activated by the MAP2K Pbs2, is activated in pbs2Δ cells via an autophosphorylation activity that is induced by osmotic pressure. We mapped a novel domain at the Hog1 C-terminal region that inhibits this activity. Removal of this domain provides a Hog1 protein that is partially independent of MAP2K, namely, partially rescues osmostress sensitivity of pbs2Δ cells. We further mapped a short domain (7 amino acid residues long) that is critical for induction of autophosphorylation. Its removal abolishes autophosphorylation, but maintains Pbs2-mediated phosphorylation. This 7 amino acids stretch is conserved in the human p38α. Similar to the case of Hog1, it's removal from p38α abolishes p38α's autophosphorylation capability, but maintains, although reduces, its activation by MKK6. This study joins a few recent reports to suggest that, like many protein kinases, MAPKs are also regulated via induced autoactivation.
- Published
- 2012
- Full Text
- View/download PDF
40. The association between time perspective and alcohol consumption in university students: cross-sectional study.
- Author
-
Beenstock J, Adams J, and White M
- Subjects
- Cross-Sectional Studies, Demography, England epidemiology, Female, Humans, Male, Self Report, Surveys and Questionnaires, Time Factors, Alcohol Drinking epidemiology, Alcohol-Related Disorders epidemiology, Students, Universities
- Abstract
Background: Heavy alcohol consumption is associated with significant morbidity and mortality. Levels of alcohol consumption among students and young people are particularly high. Time perspective describes the varying value individuals place on outcomes in the present and future. In general, it has been found that individuals prefer to receive a gain today rather than in the future. There is evidence that time perspective is associated with addictive health behaviours, including alcoholism and cigarette smoking, but less evidence of its association with non-addictive, but hazardous, levels of alcohol consumption. The objective was to determine if there is an association between time perspective and hazardous alcohol consumption., Methods: A cross-sectional survey using a self-completion questionnaire was administered to willing undergraduate students attending a convenience sample of lectures in two university faculties. Hazardous alcohol consumption was defined as a score of ≥8 on the Alcohol Use Disorders Identification Test (AUDIT) and time perspective was measured using the Consideration of Future Consequences Scale (CFCS). Participants were 322 undergraduate university students in two faculties at a university in Northern England, UK., Results: Hazardous alcohol consumption was reported by 264 (82%) respondents. After controlling for potential confounding by socio-demographic variables, greater consideration of future consequences was associated with lower odds of reporting hazardous drinking [odds ratio = 0.28; 95% confidence interval 0.15-0.54]., Conclusion: Interventions aimed at increasing future orientated time perspective may be effective in decreasing hazardous alcohol consumption in students.
- Published
- 2011
- Full Text
- View/download PDF
41. p38alpha is active in vitro and in vivo when monophosphorylated at threonine 180.
- Author
-
Askari N, Beenstock J, Livnah O, and Engelberg D
- Subjects
- Enzyme Activation, Humans, Mutation, Phosphorylation, Threonine genetics, Tyrosine chemistry, Tyrosine genetics, Tyrosine metabolism, p38 Mitogen-Activated Protein Kinases genetics, Threonine chemistry, Threonine metabolism, p38 Mitogen-Activated Protein Kinases chemistry, p38 Mitogen-Activated Protein Kinases metabolism
- Abstract
A common feature of the regulation of many protein kinases is their phosphorylation on a conserved Thr residue in the activation loop. In the family of mitogen-activated protein kinases (MAPKs), another phosphorylation event, on a Tyr residue neighboring this Thr (in a TXY motif), is required for activity. Many studies suggested that this dual phosphorylation is an absolute requirement for MAPK activation, assigning an equal role for the Thr and Tyr of the phosphorylation motif. Here we tested this notion by producing p38alpha variants carrying a T180A or Y182F mutation or both and assessing their activity in vitro and in vivo. These mutations were inserted into the p38alpha(WT) molecule or into constitutively active variants of p38alpha. We found that p38alpha molecules carrying the T180A mutations lost their activity altogether. On the other hand, p38alpha(WT) and intrinsically active mutants carrying the Y182F mutation are activated by MKK6 in vitro and in vivo, although to low levels, mainly due to reduced affinity for the substrate. However, the intrinsically active variants carrying the Y182F mutation lost most of their autophosphorylation and intrinsic activities. Thus, Thr180 is essential for catalysis, whereas Tyr182 is required for autoactivation and substrate recognition. The p38alpha(Y182F) mutants are capable of activating reporter genes, suggesting that they are not only catalytically active to some degree but also capable of inducing the relevant downstream pathway. We suggest that p38s are active when only the Thr residue of the phosphorylation lip is phosphorylated, similar to many other kinases in nature.
- Published
- 2009
- Full Text
- View/download PDF
42. Primary care trusts. Triple vision.
- Author
-
Beenstock J
- Subjects
- Governing Board, Humans, Organizational Objectives, Professional Competence, United Kingdom, Administrative Personnel standards, Leadership, Primary Health Care organization & administration, State Medicine organization & administration
- Abstract
Primary care trust chief executives need the ability to connect with a variety of organisations and groups. They need to maintain a strategic vision. They must be able to deliver on targets at the same time as delegating power and allowing local flexibility. Their behaviour and values set the tone for the organisation.
- Published
- 2002
43. Primary care groups. Time to shape up.
- Author
-
Beenstock J and Jones S
- Subjects
- Group Practice organization & administration, Leadership, Politics, State Medicine organization & administration, United Kingdom, Efficiency, Organizational, Primary Health Care organization & administration
- Abstract
PCGs and PCTs have to find the sort of structure that best fits their purpose. Unlike traditional organisations, they do not have a line of accountability through a hierarchy. While developing, they should concentrate on decentralization. Flexibility should be safeguarded.
- Published
- 2000
44. Primary care groups. Going through the change.
- Author
-
Beenstock J and Walsh N
- Subjects
- Administrative Personnel, Contract Services, Humans, Nursing Staff, Physicians, Family, State Medicine organization & administration, State Medicine trends, Total Quality Management, United Kingdom, Governing Board, Interprofessional Relations, Primary Health Care organization & administration
- Abstract
The successful establishment of primary care groups will demand sensitivity from managers. It is important to acknowledge, and mourn, what is being lost by ending the old arrangements. People do not resist change itself, but the losses and endings it involves. Despite the tight timetable, management should be participative rather than directive.
- Published
- 1998
45. Patient information. In the clear.
- Author
-
Beenstock J, Broadbent J, and Castro-Fraser J
- Subjects
- Hospitals, Public, Hospitals, University, Humans, Patient Education as Topic methods, Teaching Materials, United Kingdom, Writing, Communication, Patient Education as Topic standards
- Published
- 1998
46. This little trust went to market.
- Author
-
Beenstock J and Mabbott I
- Subjects
- Hospitals, Public economics, Role, State Medicine, United Kingdom, Hospitals, Public organization & administration, Marketing of Health Services
- Published
- 1996
47. Rehabilitation--selling points.
- Author
-
Beenstock J
- Subjects
- England, Hospital Units, Planning Techniques, Marketing of Health Services methods, Rehabilitation Centers organization & administration
- Published
- 1994
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.