114 research outputs found
Aspects of surrealism in the work of Jean Cocteau
The work of Jean Cocteau reveals connections, similarities and differences between him and the writers of the surrealist movement. In order to appreciate the links it is also necessary to examine the principles of Surrealism to determine the extent to which they have similar origins to some of Cocteau's own ideas.This line of inquiry leads to an examination of the part played by the work of Freud and Jung in inspiring both Surrealism and Cocteau. To a certain degree one is lead to question the association between Freud and Surrealism which has often been taken for granted and to look for the origins of surrealistic thought in more specifically French sources to which Freud also had access. Whilst it is difficult to bring about a rapprochement between Cocteau and Freud, there is a much smaller problem in comparing the work of Jung and that of Cocteau. There are striking similarities which indicate not only a divergence of thought between Cocteau and the surrealists but which also tempt one to extrapolate a direct link between Cocteau and Jung for which there is virtually no direct evidence. What is achieved in comparing the two is a greater understanding of the creative method of Cocteau, of the forces which drove him, and of his basic position as a child of the 20th century, yet as a poet of all ages. One begins also to have a clearer vision of the reasons which underlie his all important interest in mythology as a source of pure emotion and distilled poetic essence. For personal rather than artistic reasons a close rapport between Cocteau and the surrealist group is unthinkable as well as generally known, so that there is an enhanced interest not only in a direct comparison but also in comparing Cocteau with artists and poets who worked close to official movement but were not, at least for very long, part of it. Garcia Lorca is a Spanish writer in this position whose ideas and background so closely,resemble Cocteau's that it is almost surprising to find that he was at least tolerated if not completely accepted by the Surrealists; his friends Dalí and and Bunuel even joined the group formally. On the other hand Cocteau's proclaimed admiration for Garcia Lorca indicated at least some feeling in not being able to participate directly in the Surrealist experience. Comparing Cocteau with Lorca necessitates an examination of the creeds and ideals of them both, highlighting aspects of poetic power and creativity in the process.It is hoped to place in the context of 20th century thought the work of both Cocteau and the Surrealists. A continuity between the second half of the nineteenth century and the twentieth century should also be established and the manner in which the First World War acts as a watershed made clear. From the study Cocteau emerges as a more consistent and deeper thinker than he is often considered. The parallels found in the work which he presented in a variety of different artistic fields coupled with the overpowering sense of mission which begins to appear, dispel for ever the myths of the careless and carefree casual adolescent dilettante and reveal instead a conscious artist, a thinking poet, a careful craftsman and a profoundly proud human figure wrought with deep seated anxieties often masqued with flippancy. Undeniably however, consciously or unconsciously, whether or not the Surrealist liked the idea, there was an affinity between them and Cocteau which was sometimes a very close link and at others flared up into an open hostility which at least indicated that they were working in the same areas.Since it was the fashion at the time to accept the view of Freud as a scientist and a medical practitioner in the field of psychiatry, a view which he himself insisted upon, it has been felt justifiable to accept it, although nowadays he is partially discredited. The concept of the subconscious is also not considered favourably although it seemed real to Freud, Jung, the Surrealists and to Cocteau. Consequently it is desirable to work within the parameters of their imagination rather than to take the stance of modern behaviourist psychiatrists whose ideas are irrelevant to the literary uses made of the work of Freud and Jung
Aberrant mucin assembly in mice causes endoplasmic reticulum stress and spontaneous inflammation resembling ulcerative colitis
BACKGROUND:
MUC2 mucin
produced by intestinal goblet cells is the major component of the intestinal
mucus barrier. The inflammatory bowel disease ulcerative colitis is characterized by depleted
goblet cells and a reduced mucus layer, but the aetiology remains obscure. In this study we
used random mutagenesis to produce two murine models of inflammatory bowel disease,
characterised the basis and nature of the inflammation in these mice, and compared the
pathology with human ulcerative colitis.
METHODS AND FINDINGS:
By murine N-ethyl-N-nitrosourea mutagenesis we identified two distinct noncomplementing
missense mutations in Muc2 causing an ulcerative colitis-like phenotype. 100% of mice of both
strains developed mild spontaneous distal intestinal inflammation by 6 wk (histological colitis
scores versus wild-type mice, p , 0.01) and chronic diarrhoea. Monitoring over 300 mice of
each strain demonstrated that 25% and 40% of each strain, respectively, developed severe
clinical signs of colitis by age 1 y. Mutant mice showed aberrant Muc2 biosynthesis, less stored
mucin in goblet cells, a diminished mucus barrier, and increased susceptibility to colitis induced
by a luminal toxin. Enhanced local production of IL-1b, TNF-a, and IFN-c was seen in the distal
colon, and intestinal permeability increased 2-fold. The number of leukocytes within mesenteric
lymph nodes increased 5-fold and leukocytes cultured in vitro produced more Th1 and Th2
cytokines (IFN-c, TNF-a, and IL-13). This pathology was accompanied by accumulation of the
Muc2 precursor and ultrastructural and biochemical evidence of endoplasmic reticulum (ER)
stress in goblet cells, activation of the unfolded protein response, and altered intestinal
expression of genes involved in ER stress, inflammation, apoptosis, and wound repair.
Expression of mutated Muc2 oligomerisation domains in vitro demonstrated that aberrant
Muc2 oligomerisation underlies the ER stress. In human ulcerative colitis we demonstrate
similar accumulation of nonglycosylated MUC2 precursor in goblet cells together with
ultrastructural and biochemical evidence of ER stress even in noninflamed intestinal tissue.
Although our study demonstrates that mucin misfolding and ER stress initiate colitis in mice, it
does not ascertain the genetic or environmental drivers of ER stress in human colitis.
CONCLUSIONS:
Characterisation of the mouse models we created and comparison with human disease
suggest that ER stress-related mucin depletion could be a fundamental component of the
pathogenesis of human colitis and that clinical studies combining genetics, ER stress-related
pathology and relevant environmental epidemiology are warranted.
The Editors’ Summary of this article follows the references
Aberrant Mucin Assembly in Mice Causes Endoplasmic Reticulum Stress and Spontaneous Inflammation Resembling Ulcerative Colitis
Michael McGuckin and colleagues identify two mutations that cause aberrant mucin oligomerization in mice. The resulting phenotype, including endoplasmic reticulum stress, resembles clinical and pathologic features of human ulcerative colitis
The Influence of Number and Timing of Pregnancies on Breast Cancer Risk for Women With BRCA1 or BRCA2 Mutations
International audienceBACKGROUND:Full-term pregnancy (FTP) is associated with a reduced breast cancer (BC) risk over time, but women are at increased BC risk in the immediate years following an FTP. No large prospective studies, however, have examined whether the number and timing of pregnancies are associated with BC risk for BRCA1 and BRCA2 mutation carriers.METHODS:Using weighted and time-varying Cox proportional hazards models, we investigated whether reproductive events are associated with BC risk for mutation carriers using a retrospective cohort (5707 BRCA1 and 3525 BRCA2 mutation carriers) and a prospective cohort (2276 BRCA1 and 1610 BRCA2 mutation carriers), separately for each cohort and the combined prospective and retrospective cohort.RESULTS:For BRCA1 mutation carriers, there was no overall association with parity compared with nulliparity (combined hazard ratio [HRc] = 0.99, 95% confidence interval [CI] = 0.83 to 1.18). Relative to being uniparous, an increased number of FTPs was associated with decreased BC risk (HRc = 0.79, 95% CI = 0.69 to 0.91; HRc = 0.70, 95% CI = 0.59 to 0.82; HRc = 0.50, 95% CI = 0.40 to 0.63, for 2, 3, and ≥4 FTPs, respectively, P trend < .0001) and increasing duration of breastfeeding was associated with decreased BC risk (combined cohort P trend = .0003). Relative to being nulliparous, uniparous BRCA1 mutation carriers were at increased BC risk in the prospective analysis (prospective hazard ration [HRp] = 1.69, 95% CI = 1.09 to 2.62). For BRCA2 mutation carriers, being parous was associated with a 30% increase in BC risk (HRc = 1.33, 95% CI = 1.05 to 1.69), and there was no apparent decrease in risk associated with multiparity except for having at least 4 FTPs vs. 1 FTP (HRc = 0.72, 95% CI = 0.54 to 0.98).CONCLUSIONS:These findings suggest differential associations with parity between BRCA1 and BRCA2 mutation carriers with higher risk for uniparous BRCA1 carriers and parous BRCA2 carriers
Psychosocial impact of undergoing prostate cancer screening for men with BRCA1 or BRCA2 mutations.
OBJECTIVES: To report the baseline results of a longitudinal psychosocial study that forms part of the IMPACT study, a multi-national investigation of targeted prostate cancer (PCa) screening among men with a known pathogenic germline mutation in the BRCA1 or BRCA2 genes. PARTICPANTS AND METHODS: Men enrolled in the IMPACT study were invited to complete a questionnaire at collaborating sites prior to each annual screening visit. The questionnaire included sociodemographic characteristics and the following measures: the Hospital Anxiety and Depression Scale (HADS), Impact of Event Scale (IES), 36-item short-form health survey (SF-36), Memorial Anxiety Scale for Prostate Cancer, Cancer Worry Scale-Revised, risk perception and knowledge. The results of the baseline questionnaire are presented. RESULTS: A total of 432 men completed questionnaires: 98 and 160 had mutations in BRCA1 and BRCA2 genes, respectively, and 174 were controls (familial mutation negative). Participants' perception of PCa risk was influenced by genetic status. Knowledge levels were high and unrelated to genetic status. Mean scores for the HADS and SF-36 were within reported general population norms and mean IES scores were within normal range. IES mean intrusion and avoidance scores were significantly higher in BRCA1/BRCA2 carriers than in controls and were higher in men with increased PCa risk perception. At the multivariate level, risk perception contributed more significantly to variance in IES scores than genetic status. CONCLUSION: This is the first study to report the psychosocial profile of men with BRCA1/BRCA2 mutations undergoing PCa screening. No clinically concerning levels of general or cancer-specific distress or poor quality of life were detected in the cohort as a whole. A small subset of participants reported higher levels of distress, suggesting the need for healthcare professionals offering PCa screening to identify these risk factors and offer additional information and support to men seeking PCa screening
Multiple novel prostate cancer susceptibility signals identified by fine-mapping of known risk loci among Europeans
Genome-wide association studies (GWAS) have identified numerous common prostate cancer (PrCa) susceptibility loci. We have
fine-mapped 64 GWAS regions known at the conclusion of the iCOGS study using large-scale genotyping and imputation in
25 723 PrCa cases and 26 274 controls of European ancestry. We detected evidence for multiple independent signals at 16
regions, 12 of which contained additional newly identified significant associations. A single signal comprising a spectrum of
correlated variation was observed at 39 regions; 35 of which are now described by a novel more significantly associated lead SNP,
while the originally reported variant remained as the lead SNP only in 4 regions. We also confirmed two association signals in
Europeans that had been previously reported only in East-Asian GWAS. Based on statistical evidence and linkage disequilibrium
(LD) structure, we have curated and narrowed down the list of the most likely candidate causal variants for each region.
Functional annotation using data from ENCODE filtered for PrCa cell lines and eQTL analysis demonstrated significant
enrichment for overlap with bio-features within this set. By incorporating the novel risk variants identified here alongside the
refined data for existing association signals, we estimate that these loci now explain ∼38.9% of the familial relative risk of PrCa,
an 8.9% improvement over the previously reported GWAS tag SNPs. This suggests that a significant fraction of the heritability of
PrCa may have been hidden during the discovery phase of GWAS, in particular due to the presence of multiple independent
signals within the same regio
BHPR research: qualitative1. Complex reasoning determines patients' perception of outcome following foot surgery in rheumatoid arhtritis
Background: Foot surgery is common in patients with RA but research into surgical outcomes is limited and conceptually flawed as current outcome measures lack face validity: to date no one has asked patients what is important to them. This study aimed to determine which factors are important to patients when evaluating the success of foot surgery in RA Methods: Semi structured interviews of RA patients who had undergone foot surgery were conducted and transcribed verbatim. Thematic analysis of interviews was conducted to explore issues that were important to patients. Results: 11 RA patients (9 ♂, mean age 59, dis dur = 22yrs, mean of 3 yrs post op) with mixed experiences of foot surgery were interviewed. Patients interpreted outcome in respect to a multitude of factors, frequently positive change in one aspect contrasted with negative opinions about another. Overall, four major themes emerged. Function: Functional ability & participation in valued activities were very important to patients. Walking ability was a key concern but patients interpreted levels of activity in light of other aspects of their disease, reflecting on change in functional ability more than overall level. Positive feelings of improved mobility were often moderated by negative self perception ("I mean, I still walk like a waddling duck”). Appearance: Appearance was important to almost all patients but perhaps the most complex theme of all. Physical appearance, foot shape, and footwear were closely interlinked, yet patients saw these as distinct separate concepts. Patients need to legitimize these feelings was clear and they frequently entered into a defensive repertoire ("it's not cosmetic surgery; it's something that's more important than that, you know?”). Clinician opinion: Surgeons' post operative evaluation of the procedure was very influential. The impact of this appraisal continued to affect patients' lasting impression irrespective of how the outcome compared to their initial goals ("when he'd done it ... he said that hasn't worked as good as he'd wanted to ... but the pain has gone”). Pain: Whilst pain was important to almost all patients, it appeared to be less important than the other themes. Pain was predominately raised when it influenced other themes, such as function; many still felt the need to legitimize their foot pain in order for health professionals to take it seriously ("in the end I went to my GP because it had happened a few times and I went to an orthopaedic surgeon who was quite dismissive of it, it was like what are you complaining about”). Conclusions: Patients interpret the outcome of foot surgery using a multitude of interrelated factors, particularly functional ability, appearance and surgeons' appraisal of the procedure. While pain was often noted, this appeared less important than other factors in the overall outcome of the surgery. Future research into foot surgery should incorporate the complexity of how patients determine their outcome Disclosure statement: All authors have declared no conflicts of interes
Copy number variants as modifiers of breast cancer risk for BRCA1/BRCA2 pathogenic variant carriers
The risk of germline copy number variants (CNVs) in BRCA1 and BRCA2 pathogenic variant carriers in breast cancer is assessed, with CNVs overlapping SULT1A1 decreasing breast cancer risk in BRCA1 carriers.The contribution of germline copy number variants (CNVs) to risk of developing cancer in individuals with pathogenic BRCA1 or BRCA2 variants remains relatively unknown. We conducted the largest genome-wide analysis of CNVs in 15,342 BRCA1 and 10,740 BRCA2 pathogenic variant carriers. We used these results to prioritise a candidate breast cancer risk-modifier gene for laboratory analysis and biological validation. Notably, the HR for deletions in BRCA1 suggested an elevated breast cancer risk estimate (hazard ratio (HR) = 1.21), 95% confidence interval (95% CI = 1.09-1.35) compared with non-CNV pathogenic variants. In contrast, deletions overlapping SULT1A1 suggested a decreased breast cancer risk (HR = 0.73, 95% CI 0.59-0.91) in BRCA1 pathogenic variant carriers. Functional analyses of SULT1A1 showed that reduced mRNA expression in pathogenic BRCA1 variant cells was associated with reduced cellular proliferation and reduced DNA damage after treatment with DNA damaging agents. These data provide evidence that deleterious variants in BRCA1 plus SULT1A1 deletions contribute to variable breast cancer risk in BRCA1 carriers.Peer reviewe
Polygenic risk scores and breast and epithelial ovarian cancer risks for carriers of BRCA1 and BRCA2 pathogenic variants
Purpose We assessed the associations between population-based polygenic risk scores (PRS) for breast (BC) or epithelial ovarian cancer (EOC) with cancer risks forBRCA1andBRCA2pathogenic variant carriers. Methods Retrospective cohort data on 18,935BRCA1and 12,339BRCA2female pathogenic variant carriers of European ancestry were available. Three versions of a 313 single-nucleotide polymorphism (SNP) BC PRS were evaluated based on whether they predict overall, estrogen receptor (ER)-negative, or ER-positive BC, and two PRS for overall or high-grade serous EOC. Associations were validated in a prospective cohort. Results The ER-negative PRS showed the strongest association with BC risk forBRCA1carriers (hazard ratio [HR] per standard deviation = 1.29 [95% CI 1.25-1.33],P = 3x10(-72)). ForBRCA2, the strongest association was with overall BC PRS (HR = 1.31 [95% CI 1.27-1.36],P = 7x10(-50)). HR estimates decreased significantly with age and there was evidence for differences in associations by predicted variant effects on protein expression. The HR estimates were smaller than general population estimates. The high-grade serous PRS yielded the strongest associations with EOC risk forBRCA1(HR = 1.32 [95% CI 1.25-1.40],P = 3x10(-22)) andBRCA2(HR = 1.44 [95% CI 1.30-1.60],P = 4x10(-12)) carriers. The associations in the prospective cohort were similar. Conclusion Population-based PRS are strongly associated with BC and EOC risks forBRCA1/2carriers and predict substantial absolute risk differences for women at PRS distribution extremes.Peer reviewe
Breast and Prostate Cancer Risks for Male BRCA1 and BRCA2 Pathogenic Variant Carriers Using Polygenic Risk Scores
Background: Recent population-based female breast cancer and prostate cancer polygenic risk scores (PRS) have been developed. We assessed the associations of these PRS with breast and prostate cancer risks for male BRCA1 and BRCA2 pathogenic variant carriers. Methods: 483 BRCA1 and 1318 BRCA2 European ancestry male carriers were available from the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA). A 147-single nucleotide polymorphism (SNP) prostate cancer PRS (PRSPC) and a 313-SNP breast cancer PRS were evaluated. There were 3 versions of the breast cancer PRS, optimized to predict overall (PRSBC), estrogen receptor (ER)-negative (PRSER-), or ER-positive (PRSER+) breast cancer risk. Results: PRSER+ yielded the strongest association with breast cancer risk. The odds ratios (ORs) per PRSER+ standard deviation estimates were 1.40 (95% confidence interval [CI] =1.07 to 1.83) for BRCA1 and 1.33 (95% CI = 1.16 to 1.52) for BRCA2 carriers. PRSPC was associated with prostate cancer risk for BRCA1 (OR = 1.73, 95% CI = 1.28 to 2.33) and BRCA2 (OR = 1.60, 95% CI = 1.34 to 1.91) carriers. The estimated breast cancer odds ratios were larger after adjusting for female relative breast cancer family history. By age 85 years, for BRCA2 carriers, the breast cancer risk varied from 7.7% to 18.4% and prostate cancer risk from 34.1% to 87.6% between the 5th and 95th percentiles of the PRS distributions. Conclusions: Population-based prostate and female breast cancer PRS are associated with a wide range of absolute breast and prostate cancer risks for male BRCA1 and BRCA2 carriers. These findings warrant further investigation aimed at providing personalized cancer risks for male carriers and informing clinical management.Peer reviewe
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