1
|
Programming temporal stiffness cues within extracellular matrix hydrogels for modelling cancer niches. Mater Today Bio 2024; 25:101004. [PMID: 38420142 PMCID: PMC10900776 DOI: 10.1016/j.mtbio.2024.101004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 02/13/2024] [Accepted: 02/15/2024] [Indexed: 03/02/2024] Open
Abstract
Extracellular matrix (ECM) stiffening is a common occurrence during the progression of many diseases, such as breast cancer. To accurately mimic the pathophysiological context of disease within 3D in vitro models, there is high demand for smart biomaterials which replicate the dynamic and temporal mechanical cues of diseased states. This study describes a preclinical disease model, using breast cancer as an example, which replicates the dynamic plasticity of the tumour microenvironment by incorporating temporal (3-week progression) biomechanical cues within a tissue-specific hydrogel microenvironment. The composite hydrogel formulation, integrating adipose-derived decellularised ECM (AdECM) and silk fibroin, was initially crosslinked using a visible light-mediated system, and then progressively stiffened through spontaneous secondary structure interactions inherent between the polymer chains (∼10-15 kPa increase, with a final stiffness of 25 kPa). When encapsulated and cultured in vitro, MCF-7 breast cancer cells initially formed numerous, large spheroids (>1000 μm2 in area), however, with progressive temporal stiffening, cells demonstrated growth arrest and underwent phenotypic changes resulting in intratumoral heterogeneity. Unlike widely-investigated static mechanical models, this stiffening hydrogel allowed for progressive phenotypic changes to be observed, and fostered the development of mature organoid-like spheroids, which mimicked both the organisation and acinar-structures of mature breast epithelium. The spheroids contained a central population of cells which expressed aggressive cellular programs, evidenced by increased fibronectin expression and reduction of E-cadherin. The phenotypic heterogeneity observed using this model is more reflective of physiological tumours, demonstrating the importance of establishing temporal cues within preclinical models in future work. Overall, the developed model demonstrated a novel strategy to uncouple ECM biomechanical properties from the cellular complexities of the disease microenvironment and offers the potential for wide applicability in other 3D in vitro disease models through addition of tissue-specific dECM materials.
Collapse
|
2
|
The complex circumstellar environment of supernova 2023ixf. Nature 2024; 627:759-762. [PMID: 38538936 DOI: 10.1038/s41586-024-07116-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 01/24/2024] [Indexed: 04/01/2024]
Abstract
The early evolution of a supernova (SN) can reveal information about the environment and the progenitor star. When a star explodes in vacuum, the first photons to escape from its surface appear as a brief, hours-long shock-breakout flare1,2, followed by a cooling phase of emission. However, for stars exploding within a distribution of dense, optically thick circumstellar material (CSM), the first photons escape from the material beyond the stellar edge and the duration of the initial flare can extend to several days, during which the escaping emission indicates photospheric heating3. Early serendipitous observations2,4 that lacked ultraviolet (UV) data were unable to determine whether the early emission is heating or cooling and hence the nature of the early explosion event. Here we report UV spectra of the nearby SN 2023ixf in the galaxy Messier 101 (M101). Using the UV data as well as a comprehensive set of further multiwavelength observations, we temporally resolve the emergence of the explosion shock from a thick medium heated by the SN emission. We derive a reliable bolometric light curve that indicates that the shock breaks out from a dense layer with a radius substantially larger than typical supergiants.
Collapse
|
3
|
The Importance of Secondary Gain - a Missing Story. Eur Psychiatry 2022. [PMCID: PMC9565637 DOI: 10.1192/j.eurpsy.2022.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
There is a wealth of data to tell us that, when it comes to illness, not all is as it seems. Research into hidden agendas of patients [1]drives home the point that a substantial portion of patients (up to 42%) have covert motives for obtaining secondary gains associated with their patient status (e.g., financial support, help or attention from others, stimulant medication, work or study related privileges, or evasion of responsibilities. Less than 10% shared their expectations with the psychiatrist. The Accident Compensation Scheme in New Zealand, , reported a prevalence of symptom exaggeration of 20-50%. In 2017 a disorder struck in Sweden. It struck whose families had failed their last appeal for asylum. The previously unknown ’catatonia’ has many of the characteristics of a culture bound syndrome – giving voice to the voiceless/powerless. Researchers from Ireland studied the motivations of people with factitious disorder. A desire for affection was the most commonly mentioned reason for fabricating illness and as a coping mechanism for threatening life events. The analysis showed that motivation was conscious. Bianchini et al have reported on the Financial Incentive Effect. Perhaps counterintuitively one of the most important points they make is that the presence of a financial incentive is associated with worse outcomes. They found that factors othere than the injury itself control for the probabilities of return to work. How can we determine what is real? [1] Van Egmond, J., Kummeling, I., & Balkom, T. A. (2005). Secondary gain as hidden motive for getting psychiatric treatment. European Psychiatry, 20(5-6), 416-421.
Disclosure
No significant relationships.
Collapse
|
4
|
Successful treatment of two horses after perforation of the small intestine by fine wire. EQUINE VET EDUC 2021. [DOI: 10.1111/eve.13151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
5
|
Compulsory admissions of patients with mental disorders: State of the art on ethical and legislative aspects in 40 European countries. Eur Psychiatry 2020; 63:e82. [PMID: 32829740 PMCID: PMC7576531 DOI: 10.1192/j.eurpsy.2020.79] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Background. Compulsory admission procedures of patients with mental disorders vary between countries in Europe. The Ethics Committee of the European Psychiatric Association (EPA) launched a survey on involuntary admission procedures of patients with mental disorders in 40 countries to gather information from all National Psychiatric Associations that are members of the EPA to develop recommendations for improving involuntary admission processes and promote voluntary care. Methods. The survey focused on legislation of involuntary admissions and key actors involved in the admission procedure as well as most common reasons for involuntary admissions. Results. We analyzed the survey categorical data in themes, which highlight that both medical and legal actors are involved in involuntary admission procedures. Conclusions. We conclude that legal reasons for compulsory admission should be reworded in order to remove stigmatization of the patient, that raising awareness about involuntary admission procedures and patient rights with both patients and family advocacy groups is paramount, that communication about procedures should be widely available in lay-language for the general population, and that training sessions and guidance should be available for legal and medical practitioners. Finally, people working in the field need to be constantly aware about the ethical challenges surrounding compulsory admissions.
Collapse
|
6
|
Reach out: it’s good to call. Anaesthesia 2019; 74:1619. [DOI: 10.1111/anae.14828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
7
|
Indoor tanning is associated with injuries including skin burns, US study finds. Assoc Med J 2014. [DOI: 10.1136/bmj.g7689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
8
|
UK sees small decrease in TB, but incidence is still high. Assoc Med J 2014. [DOI: 10.1136/bmj.g5885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
9
|
Serco pulls out of out-of-hours care in Cornwall. Assoc Med J 2013. [DOI: 10.1136/bmj.f7549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
10
|
MPs are to review evidence on screening programmes. Assoc Med J 2013. [DOI: 10.1136/bmj.f7557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
11
|
Shared decision making must move from rhetoric to reality, says King's Fund. BMJ : BRITISH MEDICAL JOURNAL 2011. [DOI: 10.1136/bmj.d4734] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
12
|
Current system of buying medical supplies is unacceptably wasteful, say MPs. West J Med 2011. [DOI: 10.1136/bmj.d3166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
13
|
Cardiologists call for a single European system to oversee medical devices. West J Med 2011. [DOI: 10.1136/bmj.d3144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
14
|
NHS should lead in ensuring goods it buys are produced ethically. West J Med 2011. [DOI: 10.1136/bmj.d3107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
15
|
Illness from cold rental housing costs the NHS in England 145m a year. West J Med 2011. [DOI: 10.1136/bmj.d2215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
16
|
Whistleblowers' concerns are ignored in care sector, report says. West J Med 2011. [DOI: 10.1136/bmj.d2282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
17
|
Government plans to let GPs buy from "any willing provider" are not sophisticated enough, report says. West J Med 2011. [DOI: 10.1136/bmj.d2091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
18
|
Fatal breathing problems are four times as likely in intensive care as in general anaesthesia for surgery. West J Med 2011. [DOI: 10.1136/bmj.d2015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
19
|
Report calls for National Commissioning Board to have strategic commissioning role. West J Med 2011. [DOI: 10.1136/bmj.d1355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
20
|
Royal College is to carve out role of the generalist in an increasingly specialist environment. West J Med 2011. [DOI: 10.1136/bmj.d1438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
21
|
RCGP chair says it will cost 300m for GP time on consortiums. West J Med 2011. [DOI: 10.1136/bmj.d1396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
22
|
Pressure mounts for BMA to oppose health bill. Assoc Med J 2011. [DOI: 10.1136/bmj.d1132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
23
|
|
24
|
Price competition may drive down quality of care, hear MPs looking at health bill. West J Med 2011. [DOI: 10.1136/bmj.d996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
25
|
|
26
|
NHS reforms do little to empower patients, charities say. BMJ : BRITISH MEDICAL JOURNAL 2011. [DOI: 10.1136/bmj.d903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
27
|
"Tsunami of obesity" threatens all regions of world, researchers find. BMJ : BRITISH MEDICAL JOURNAL 2011. [DOI: 10.1136/bmj.d772] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
28
|
Monitoring of GP incentive scheme has been inconsistent, report says. West J Med 2011. [DOI: 10.1136/bmj.d745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
29
|
NHS sets out route map for sustainable healthcare. West J Med 2011. [DOI: 10.1136/bmj.d735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
30
|
Nudge or fudge? Doctors debate best approach to improve public health. BMJ : BRITISH MEDICAL JOURNAL 2011. [DOI: 10.1136/bmj.d580] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
31
|
Commissioning will cost 1.3bn less every year under GP consortiums, says Lansley. West J Med 2011. [DOI: 10.1136/bmj.d418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
32
|
MPs criticise UK government over poor transition planning. West J Med 2011. [DOI: 10.1136/bmj.d358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
33
|
|
34
|
Hospitals need to innovate and compete, says health minister. West J Med 2010. [DOI: 10.1136/bmj.c7066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
35
|
|
36
|
Health atlas shows large variations in care in England. BMJ : BRITISH MEDICAL JOURNAL 2010. [DOI: 10.1136/bmj.c6809] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
37
|
Is the UK turning the clock back on public health advances? BMJ : BRITISH MEDICAL JOURNAL 2010. [DOI: 10.1136/bmj.c6691] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
38
|
New atlas aims to show range of activity and quality in the NHS. West J Med 2010. [DOI: 10.1136/bmj.c6230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
39
|
|
40
|
Emerging technologies should be formally evaluated. West J Med 2010. [DOI: 10.1136/bmj.c5699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
41
|
Charities welcome 50m interim cancer drugs fund. West J Med 2010. [DOI: 10.1136/bmj.c5464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
42
|
|
43
|
|
44
|
UK response to H1N1 pandemic was highly satisfactory, independent review says. BMJ : BRITISH MEDICAL JOURNAL 2010. [DOI: 10.1136/bmj.c3569] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
45
|
|
46
|
Angiotensin receptor blockers are linked to small rise in risk of cancer. West J Med 2010. [DOI: 10.1136/bmj.c3229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
47
|
Public inquiry into Mid Staffs will report in the spring. West J Med 2010. [DOI: 10.1136/bmj.c3117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
48
|
Doctors are one of the "linchpins" in closing the UK health inequalities gap. West J Med 2010. [DOI: 10.1136/bmj.c3060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
49
|
NHS London chief resigns in protest at government axing of plans. West J Med 2010. [DOI: 10.1136/bmj.c2879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
50
|
NICE Citizens Council debates incentives for healthy behaviour. BMJ : BRITISH MEDICAL JOURNAL 2010. [DOI: 10.1136/bmj.c2747] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|