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Do we need high temporal resolution modelling of exposure in urban areas? A test case. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 885:163711. [PMID: 37149198 DOI: 10.1016/j.scitotenv.2023.163711] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 04/10/2023] [Accepted: 04/20/2023] [Indexed: 05/08/2023]
Abstract
Roadside concentrations of harmful pollutants such as NOx are highly variable in both space and time. This is rarely considered when assessing pedestrian and cyclist exposures. We aim to fully describe the spatio-temporal variability of exposures of pedestrians and cyclists travelling along a road at high resolution. We evaluate the value added of high spatio-temporal resolution compared to high spatial resolution only. We also compare high resolution vehicle emissions modelling to using a constant volume source. We highlight conditions of peak exposures, and discuss implications for health impact assessments. Using the large eddy simulation code Fluidity we simulate NOx concentrations at a resolution of 2 m and 1 s along a 350 m road segment in a complex real-world street geometry including an intersection and bus stops. We then simulate pedestrian and cyclist journeys for different routes and departure times. For the high spatio-temporal method, the standard deviation in 1 s concentration experienced by pedestrians (50.9 μg.m-3) is nearly three times greater than that predicted by the high-spatial only (17.5 μg.m-3) or constant volume source (17.6 μg.m-3) methods. This exposure is characterised by low concentrations punctuated by short duration, peak exposures which elevate the mean exposure and are not captured by the other two methods. We also find that the mean exposure of cyclists on the road (31.8 μg.m-3) is significantly greater than that of cyclists on a roadside path (25.6 μg.m-3) and that of pedestrians on a sidewalk (17.6 μg.m-3). We conclude that ignoring high resolution temporal air pollution variability experienced at the breathing time scale can lead to a mischaracterization of pedestrian and cyclist exposures, and therefore also potentially the harm caused. High resolution methods reveal that peaks, and hence mean exposures, can be meaningfully reduced by avoiding hyper-local hotspots such as bus stops and junctions.
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Reconstruction of the Corticospinal Tract in Patients with Motor-Eloquent High-Grade Gliomas Using Multilevel Fiber Tractography Combined with Functional Motor Cortex Mapping. AJNR Am J Neuroradiol 2023; 44:283-290. [PMID: 36797033 PMCID: PMC10187805 DOI: 10.3174/ajnr.a7793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 01/17/2023] [Indexed: 02/18/2023]
Abstract
BACKGROUND AND PURPOSE Tractography of the corticospinal tract is paramount to presurgical planning and guidance of intraoperative resection in patients with motor-eloquent gliomas. It is well-known that DTI-based tractography as the most frequently used technique has relevant shortcomings, particularly for resolving complex fiber architecture. The purpose of this study was to evaluate multilevel fiber tractography combined with functional motor cortex mapping in comparison with conventional deterministic tractography algorithms. MATERIALS AND METHODS Thirty-one patients (mean age, 61.5 [SD, 12.2] years) with motor-eloquent high-grade gliomas underwent MR imaging with DWI (TR/TE = 5000/78 ms, voxel size = 2 × 2 × 2 mm3, 1 volume at b = 0 s/mm2, 32 volumes at b = 1000 s/mm2). DTI, constrained spherical deconvolution, and multilevel fiber tractography-based reconstruction of the corticospinal tract within the tumor-affected hemispheres were performed. The functional motor cortex was enclosed by navigated transcranial magnetic stimulation motor mapping before tumor resection and used for seeding. A range of angular deviation and fractional anisotropy thresholds (for DTI) was tested. RESULTS For all investigated thresholds, multilevel fiber tractography achieved the highest mean coverage of the motor maps (eg, angular threshold = 60°; multilevel/constrained spherical deconvolution/DTI, 25% anisotropy threshold = 71.8%, 22.6%, and 11.7%) and the most extensive corticospinal tract reconstructions (eg, angular threshold = 60°; multilevel/constrained spherical deconvolution/DTI, 25% anisotropy threshold = 26,485 mm3, 6308 mm3, and 4270 mm3). CONCLUSIONS Multilevel fiber tractography may improve the coverage of the motor cortex by corticospinal tract fibers compared with conventional deterministic algorithms. Thus, it could provide a more detailed and complete visualization of corticospinal tract architecture, particularly by visualizing fiber trajectories with acute angles that might be of high relevance in patients with gliomas and distorted anatomy.
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Alternative polyadenylation alters protein dosage by switching between intronic and 3'UTR sites. SCIENCE ADVANCES 2023; 9:eade4814. [PMID: 36800428 PMCID: PMC9937581 DOI: 10.1126/sciadv.ade4814] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
Alternative polyadenylation (APA) creates distinct transcripts from the same gene by cleaving the pre-mRNA at poly(A) sites that can lie within the 3' untranslated region (3'UTR), introns, or exons. Most studies focus on APA within the 3'UTR; however, here, we show that CPSF6 insufficiency alters protein levels and causes a developmental syndrome by deregulating APA throughout the transcript. In neonatal humans and zebrafish larvae, CPSF6 insufficiency shifts poly(A) site usage between the 3'UTR and internal sites in a pathway-specific manner. Genes associated with neuronal function undergo mostly intronic APA, reducing their expression, while genes associated with heart and skeletal function mostly undergo 3'UTR APA and are up-regulated. This suggests that, under healthy conditions, cells toggle between internal and 3'UTR APA to modulate protein expression.
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Timing of maternal immune activation and sex influence schizophrenia-relevant cognitive constructs and neuregulin and GABAergic pathways. Brain Behav Immun 2022; 100:70-82. [PMID: 34808289 DOI: 10.1016/j.bbi.2021.11.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 10/17/2021] [Accepted: 11/13/2021] [Indexed: 12/24/2022] Open
Abstract
Maternal immune activation (MIA) during pregnancy is an established environmental risk factor for schizophrenia. Timing of immune activation exposure as well as sex of the exposed offspring are critical factors in defining the effects of MIA. However, the specificity of MIA on the component structure of schizophrenia, especially cognition, has been difficult to assess due to a lack of translational validity of maze-like testing paradigms. We aimed to assess cognitive domains relevant to schizophrenia using highly translational touchscreen-based tasks in male and female mice exposed to the viral mimetic, poly(I:C) (5 mg/k, i.p.), during early (gestational day (GD) 9-11) and late (GD13-15) gestational time points. Gene expression of schizophrenia candidate pathways were assessed in fetal brain immediately following poly(I:C) exposure and in adulthood to identify its influence on neurodevelopmental processes. Sex and window specific alterations in cognitive performance were found with the early window of MIA exposure causing female-specific disruptions to working memory and reduced perseverative behaviour, while late MIA exposure caused male-specific changes to working memory and deficits in reversal learning. GABAergic specification marker, Nkx2.1 gene expression was reduced in fetal brains and reelin expression was reduced in adult hippocampus of both early and late poly(I:C) exposed mice. Neuregulin and EGF signalling were initially upregulated in the fetal brain, but were reduced in the adult hippocampus, with male mice exposed in the late window showing reduced Nrg3 expression. Serine racemase was reduced in both fetal and adult brain, but again, adult reductions were specific to male mice exposed at the late time point. Overall, we show that cognitive constructs relevant to schizophrenia are altered by in utero exposure to maternal immune activation, but are highly dependent on the timing of infection and the sex of the offspring. Glutamatergic and epidermal growth factor pathways were similarly altered by MIA in a timing and sex dependent manner, while MIA-induced GABAergic deficits were independent of timing or sex.
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Expanding the mutational landscape and clinical phenotype of the YIF1B related brain disorder. Brain 2021; 144:e85. [PMID: 34373908 PMCID: PMC8634087 DOI: 10.1093/brain/awab297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 06/27/2021] [Indexed: 11/18/2022] Open
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701P Real-world (RW) treatment (Tx) patterns and clinical outcomes in patients (pts) with metastatic urothelial carcinoma (mUC) receiving first-line (1L) Tx: Results from IMPACT UC. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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103P First-line avelumab in combination with cetuximab and chemotherapy in patients with advanced squamous non-small cell lung cancer (NSCLC). J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)01945-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Expanding the genotypic and phenotypic spectrum in a diverse cohort of 104 individuals with Wiedemann-Steiner syndrome. Am J Med Genet A 2021; 185:1649-1665. [PMID: 33783954 DOI: 10.1002/ajmg.a.62124] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 01/29/2021] [Accepted: 01/30/2021] [Indexed: 12/19/2022]
Abstract
Wiedemann-Steiner syndrome (WSS) is an autosomal dominant disorder caused by monoallelic variants in KMT2A and characterized by intellectual disability and hypertrichosis. We performed a retrospective, multicenter, observational study of 104 individuals with WSS from five continents to characterize the clinical and molecular spectrum of WSS in diverse populations, to identify physical features that may be more prevalent in White versus Black Indigenous People of Color individuals, to delineate genotype-phenotype correlations, to define developmental milestones, to describe the syndrome through adulthood, and to examine clinicians' differential diagnoses. Sixty-nine of the 82 variants (84%) observed in the study were not previously reported in the literature. Common clinical features identified in the cohort included: developmental delay or intellectual disability (97%), constipation (63.8%), failure to thrive (67.7%), feeding difficulties (66.3%), hypertrichosis cubiti (57%), short stature (57.8%), and vertebral anomalies (46.9%). The median ages at walking and first words were 20 months and 18 months, respectively. Hypotonia was associated with loss of function (LoF) variants, and seizures were associated with non-LoF variants. This study identifies genotype-phenotype correlations as well as race-facial feature associations in an ethnically diverse cohort, and accurately defines developmental trajectories, medical comorbidities, and long-term outcomes in individuals with WSS.
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Detection of Optic Neuritis on Routine Brain MRI without and with the Assistance of an Image Postprocessing Algorithm. AJNR Am J Neuroradiol 2021; 42:1130-1135. [PMID: 33737263 DOI: 10.3174/ajnr.a7068] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 12/20/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE At times, there is a clinical need for using routine brain MR imaging performed close to the time of onset of patients' visual symptoms to firmly establish the diagnosis of optic neuritis. Our aim was to assess the diagnostic performance of radiologists in detecting optic neuritis on routine brain MR images and whether this performance could be enhanced using a postprocessing algorithm. MATERIALS AND METHODS In this retrospective case-control study of 60 patients (37 women, 23 men; mean age, 47.2 [SD, 17.9] years), 2 blinded neuroradiologists evaluated T2-weighted FLAIR and contrast-enhanced T1WI from brain MR imaging for the presence of imaging evidence of optic neuritis. Images were processed using an image-processing algorithm that aimed to selectively accentuate the signal intensity of diseased optic nerves. We assessed the effect of image processing on the contrast-to-noise ratio between the optic nerves and normal-appearing white matter and on the diagnostic performance of the neuroradiologists, including the interobserver reliability. RESULTS The average sensitivity of readers was 55%, 56.5%, and 30.0% on FLAIR, coronal contrast-enhanced T1WI, and axial contrast-enhanced T1WI, respectively. Sensitivities were lower in the absence of fat saturation on FLAIR (P = .001) and coronal contrast-enhanced T1WI (P = .04). Processing increased the contrast-to-noise ratio of diseased (P value range = .03 to <.001) but not of control optic nerves. Processing did not improve the sensitivity but improved the specificity and positive predictive value. Interobserver agreement improved from slight to good. CONCLUSIONS Detection of optic neuritis on routine brain MR imaging is challenging. Specificity, positive predictive value, and interobserver agreement can be improved by postprocessing of MR images.
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Bazedoxifene - a promising brain active SERM that crosses the blood brain barrier and enhances spatial memory. Psychoneuroendocrinology 2020; 121:104830. [PMID: 32858306 DOI: 10.1016/j.psyneuen.2020.104830] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 08/11/2020] [Indexed: 12/21/2022]
Abstract
Over 20 years of accumulated evidence has shown that the major female sex hormone 17β-estradiol can enhance cognitive functioning. However, the utility of estradiol as a therapeutic cognitive enhancer is hindered by its unwanted peripheral effects (carcinogenic). Selective estrogen receptor modulators (SERMs) avoid the unwanted effects of estradiol by acting as estrogen receptor antagonists in some tissues such as breast and uterus, but as agonists in others such as bone, and are currently used for the treatment of osteoporosis. However, understanding of their actions in the brain are limited. The third generation SERM bazedoxifene has recently been FDA approved for clinical use with an improved biosafety profile. However, whether bazedoxifene can enter the brain and enhance cognition is unknown. Using mice, the current study aimed to explore if bazedoxifene can 1) cross the blood-brain barrier, 2) rescue ovariectomy-induced hippocampal-dependent spatial memory deficit, and 3) activate neural estrogen response element (ERE)-dependent gene transcription. Using liquid chromatography-mass spectrometry (LC-MS), we firstly demonstrate that a peripheral injection of bazedoxifene can enter the brain. Secondly, we show that an acute intraperitoneal injection of bazedoxifene can rescue ovariectomy-induced spatial memory deficits. And finally, using the ERE-luciferase reporter mouse, we show in vivo that bazedoxifene can activate the ERE in the brain. The evidence shown here suggest bazedoxifene could be a viable cognitive enhancer with promising clinical applicability.
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Real-life outcomes after artificial urinary sphincter explantation in women suffering from severe stress incontinence. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32976-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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P92 Navigated repetitive Transcranial Magnetic Stimulation (nTMS) in the non fluent variant of Primary Progressive Aphasia (nfvPPA). Clin Neurophysiol 2020. [DOI: 10.1016/j.clinph.2019.12.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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P284 Navigated repetitive Transcranial Magnetic Stimulation (nTMS) in the non fluent variant of Primary Progressive Aphasia (nfvPPA). Clin Neurophysiol 2020. [DOI: 10.1016/j.clinph.2019.12.394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Randomized, phase Ib/II study of M6620 + avelumab + carboplatin vs standard care (sc) in patients (pts) with platinum-sensitive poly (ADP-ribose) polymerase inhibitor-(PARPi)-resistant ovarian cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz250.068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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[Temporary urethral stents changes as an alternative treatment for neurological bladder]. Prog Urol 2019; 29:560-566. [PMID: 31471265 DOI: 10.1016/j.purol.2019.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 07/22/2019] [Accepted: 08/03/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Patients with detrusor-sphincter dysynergia (DSD) who are unable to perform self-catheterisation can benefit from an endoscopic treatment. We chose regular urethral stent changes as an alternative to sphincterotomy in this kind of patients. The purpose of this study is to show that temporary urethral stents changes represent a treatment option with a reasonable morbidity for patients with DSD. METHODS We retrospectively reviewed patients in our center who had been treated with urethral stents from April 2005 to September 2017. The stent changes were performed every 12 to 18 months depending on urethrovesical fibroscopy findings. The primary endpoint was treatment continuation. RESULTS A total of 44 patients were enrolled in our study and the average follow-up duration was 46 months [18.5-53.25]. Primary treatment failure was seen in 14 (32%) patients mainly due to problems related to equipment (n=3) and urinary retention (n=2). Four patients died before their first stent change. The treatment was successful in 30 (68%) patients, of whom 10 (33%) subsequently adopted a voiding mode change. We lost sight of 5 patients (11%) during follow-up. The main complications were urinary retention (29%), urinary tract infections (27%) and stent migration (18%). Fifteen (34%) experienced grade III-IV complications. CONCLUSIONS Regular urethral stent changes represent an alternative treatment option for patients with DSD but with a significant morbidity. LEVEL OF EVIDENCE 4.
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Diet selection and preference of small ruminants during drought conditions in a dryland pastoral system in South Africa. Small Rumin Res 2019. [DOI: 10.1016/j.smallrumres.2019.05.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Vorhersage eines ungeplanten Therapieabbruchs bei Patienten mit kastrationsresistentem Prostatakarzinom – Ergebnisse der IBuTu-Studie. Urologe A 2018; 57:909-918. [DOI: 10.1007/s00120-018-0704-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Erratum zu: Visuelle Wahrnehmungsstörungen. Monatsschr Kinderheilkd 2018. [DOI: 10.1007/s00112-018-0529-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Circulating Monocyte Subtypes Correlate with Cardiac Allograft Vasculopathy and Differ from Atherosclerotic Disease: A Tool for Monitoring? J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Prefrontal cortical parvalbumin and somatostatin expression and cell density increase during adolescence and are modified by BDNF and sex. Mol Cell Neurosci 2018; 88:177-188. [DOI: 10.1016/j.mcn.2018.02.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 01/25/2018] [Accepted: 02/01/2018] [Indexed: 01/21/2023] Open
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Ambulante spezialfachärztliche Versorgung (ASV; § 116b neu). Urologe A 2017; 56:985-987. [DOI: 10.1007/s00120-017-0447-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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HEALTH CARE PROFESSIONALS’ PERSPECTIVES OF CARING FOR PATIENTS WITH HEPATOCELLULAR CARCINOMA. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Purified Human Pancreatic Islets, CIT Culture Media with Lisofylline or Exenatide. CELLR4-- REPAIR, REPLACEMENT, REGENERATION, & REPROGRAMMING 2017; 5:e2377. [PMID: 30613755 PMCID: PMC6319648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
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De Novo Mutations of RERE Cause a Genetic Syndrome with Features that Overlap Those Associated with Proximal 1p36 Deletions. Am J Hum Genet 2016; 98:963-970. [PMID: 27087320 DOI: 10.1016/j.ajhg.2016.03.002] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 03/02/2016] [Indexed: 10/21/2022] Open
Abstract
Deletions of chromosome 1p36 affect approximately 1 in 5,000 newborns and are associated with developmental delay, intellectual disability, and defects involving the brain, eye, ear, heart, and kidney. Arginine-glutamic acid dipeptide repeats (RERE) is located in the proximal 1p36 critical region. RERE is a widely-expressed nuclear receptor coregulator that positively regulates retinoic acid signaling. Animal models suggest that RERE deficiency might contribute to many of the structural and developmental birth defects and medical problems seen in individuals with 1p36 deletion syndrome, although human evidence supporting this role has been lacking. In this report, we describe ten individuals with intellectual disability, developmental delay, and/or autism spectrum disorder who carry rare and putatively damaging changes in RERE. In all cases in which both parental DNA samples were available, these changes were found to be de novo. Associated features that were recurrently seen in these individuals included hypotonia, seizures, behavioral problems, structural CNS anomalies, ophthalmologic anomalies, congenital heart defects, and genitourinary abnormalities. The spectrum of defects documented in these individuals is similar to that of a cohort of 31 individuals with isolated 1p36 deletions that include RERE and are recapitulated in RERE-deficient zebrafish and mice. Taken together, our findings suggest that mutations in RERE cause a genetic syndrome and that haploinsufficiency of RERE might be sufficient to cause many of the phenotypes associated with proximal 1p36 deletions.
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A Germline Variant in the PANX1 Gene Has Reduced Channel Function and Is Associated with Multisystem Dysfunction. J Biol Chem 2016; 291:12432-12443. [PMID: 27129271 DOI: 10.1074/jbc.m116.717934] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Indexed: 12/20/2022] Open
Abstract
Pannexin1 (PANX1) is probably best understood as an ATP release channel involved in paracrine signaling. Given its ubiquitous expression, PANX1 pathogenic variants would be expected to lead to disorders involving multiple organ systems. Using whole exome sequencing, we discovered the first patient with a homozygous PANX1 variant (c.650G→A) resulting in an arginine to histidine substitution at position 217 (p.Arg217His). The 17-year-old female has intellectual disability, sensorineural hearing loss requiring bilateral cochlear implants, skeletal defects, including kyphoscoliosis, and primary ovarian failure. Her consanguineous parents are each heterozygous for this variant but are not affected by the multiorgan syndromes noted in the proband. Expression of the p.Arg217His mutant in HeLa, N2A, HEK293T, and Ad293 cells revealed normal PANX1 glycosylation and cell surface trafficking. Dye uptake, ATP release, and electrophysiological measurements revealed p.Arg217His to be a loss-of-function variant. Co-expression of the mutant with wild-type PANX1 suggested the mutant was not dominant-negative to PANX1 channel function. Collectively, we demonstrate a PANX1 missense change associated with human disease in the first report of a "PANX1-related disorder."
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137 Frequent Emergency Department Users: Describing Care Coordination Services. Ann Emerg Med 2015. [DOI: 10.1016/j.annemergmed.2015.07.169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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WAC loss-of-function mutations cause a recognisable syndrome characterised by dysmorphic features, developmental delay and hypotonia and recapitulate 10p11.23 microdeletion syndrome. J Med Genet 2015; 52:754-61. [PMID: 26264232 DOI: 10.1136/jmedgenet-2015-103069] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 07/14/2015] [Indexed: 11/03/2022]
Abstract
BACKGROUND Rare de novo mutations have been implicated as a significant cause of idiopathic intellectual disability. Large deletions encompassing 10p11.23 have been implicated in developmental delay, behavioural abnormalities and dysmorphic features, but the genotype-phenotype correlation was not delineated. Mutations in WAC have been recently reported in large screening cohorts of patients with intellectual disability or autism, but no full phenotypic characterisation was described. METHODS Clinical and molecular characterisation of six patients with loss-of-function WAC mutations identified by whole exome sequencing was performed. Clinical data were obtained by retrospective chart review, parental interviews, direct patient interaction and formal neuropsychological evaluation. RESULTS Five heterozygous de novo WAC mutations were identified in six patients. Three of the mutations were nonsense, and two were frameshift; all are predicted to cause loss of function either through nonsense-mediated mRNA decay or protein truncation. Clinical findings included developmental delay (6/6), hypotonia (6/6), behavioural problems (5/6), eye abnormalities (5/6), constipation (5/6), feeding difficulties (4/6), seizures (2/6) and sleep problems (2/6). All patients exhibited common dysmorphic features, including broad/prominent forehead, synophrys and/or bushy eyebrows, depressed nasal bridge and bulbous nasal tip. Posteriorly rotated ears, hirsutism, deep-set eyes, thin upper lip, inverted nipples, hearing loss and branchial cleft anomalies were also noted. CONCLUSIONS Our case series show that loss-of-function mutations in WAC cause a recognisable genetic syndrome characterised by a neurocognitive phenotype and facial dysmorphism. Our data highly suggest that WAC haploinsufficiency is responsible for most of the phenotypic features associated with deletions encompassing 10p11.23.
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Effect of chronic corticosterone application on depression-like behavior in C57BL/6N and C57BL/6J mice. GENES BRAIN AND BEHAVIOR 2015; 14:292-300. [DOI: 10.1111/gbb.12208] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 02/21/2015] [Accepted: 02/26/2015] [Indexed: 02/01/2023]
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Metabolite profiling of fish skin mucus: a novel approach for minimally-invasive environmental exposure monitoring and surveillance. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:3091-3100. [PMID: 25607249 DOI: 10.1021/es505054f] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The application of 'omics tools to biologically based monitoring and surveillance of aquatic environments shows considerable promise for complementing chemical monitoring in ecological risk assessments. However, few of the current approaches offer the ability to sample ecologically relevant species (e.g., fish) in a way that produces minimal impact on the health of the organism(s) under study. In the current study we employ liquid chromatography tandem mass spectrometry (LC-MS/MS) to assess the potential for skin mucus-based metabolomics for minimally invasive sampling of the fathead minnow (FHM; Pimephales promelas). Using this approach we were able to detect 204 distinct metabolites in the FHM skin mucus metabolome representing a large number of metabolite classes. An analysis of the sex specificity of the skin mucus metabolome showed it to be highly sexually dimorphic with 72 of the detected metabolites showing a statistically significant bias with regard to sex. Finally, in a proof-of-concept fashion we report on the use of skin mucus-based metabolomics to assess exposures in male and female fathead minnows to an environmentally relevant concentration of bisphenol A, a nearly ubiquitous environmental contaminant and an established endocrine active chemical.
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Impact of Assisted Reproductive Therapy (Art) On Infant Health and Health Care Cost Outcomes. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A520. [PMID: 27201623 DOI: 10.1016/j.jval.2014.08.1621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Anspruch und Wirklichkeit selektiver Vertragsmöglichkeiten. Urologe A 2014; 53:1158-61. [DOI: 10.1007/s00120-014-3600-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Neue Kooperation zwischen BDU und Industrie begründet. Urologe A 2013; 52:1065-7. [DOI: 10.1007/s00120-013-3244-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Perspektiven zur Entwicklung der deutschen Urologie. Urologe A 2013; 52:1055-6. [DOI: 10.1007/s00120-013-3254-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Entwicklung und Ziele der Akademie der Deutschen Urologen. Urologe A 2013; 52:1061-4. [DOI: 10.1007/s00120-013-3240-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zusammenarbeit von Berufsverband und Fachgesellschaft. Urologe A 2013; 52:1057-60. [DOI: 10.1007/s00120-013-3245-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Injection of vascular endothelial growth factor into knee joints induces osteoarthritis in mice. Osteoarthritis Cartilage 2013; 21:491-7. [PMID: 23257244 DOI: 10.1016/j.joca.2012.12.003] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 11/13/2012] [Accepted: 12/07/2012] [Indexed: 02/02/2023]
Abstract
UNLABELLED Osteoarthritis (OA) is a common joint disorder affecting circa 2% of the population. OBJECTIVES It has been suggested that secretion of vascular endothelial growth factor (VEGF) could play a role in the chain of events leading to OA. METHODS In the present study, healthy mice were injected intra-articularly with VEGF. RESULTS Shortly after the administration of VEGF, synovial hyperplasia, increased calcification of the articular cartilage and bone sclerosis were observed. Consequently, cartilage degradation characteristic of OA was found. These changes were seen to a lesser degree in the opposite knees of VEGF-injected mice and did not occur in the control mice. CONCLUSIONS The findings suggest an active role of VEGF in the pathogenesis of OA and render support to a possible role for subchondral bone sclerosis in the pathogenesis of cartilage degradation.
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Berufsbild und Sektorengrenzen im Wandel. Urologe A 2012; 51:1063-4. [DOI: 10.1007/s00120-012-2933-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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[Position paper on urological oncology. Joint statement of the German Society for Urology, the Professional Association of German Urologists and the Working Group Urological Oncology of the German Cancer Society]. Urologe A 2012; 50 Suppl 1:165-9. [PMID: 21863407 DOI: 10.1007/s00120-011-2694-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Abstract
The Clinical Islet Laboratory at the University of Alberta/Alberta Health Services distributes human islets for basic research when islet preparations fail to meet defined release criteria for transplantation. This report highlights our islet distribution activity for diabetes research over a 3-year period. Shipments of the acinar-enriched fraction for research were not included in this report. In 2010, we distributed 6.3 million islet equivalents (IEQs) of islets through 127 shipments to 8 researchers, locally, nationally, and internationally. The number of preparations for research use was stable over the 3-year period (26, 23, and 29 preparations in 2008, 2009, and 2010, respectively). Islet yield distributed for research per isolation was 201, 212, and 218 × 10(3) IEQs, respectively. The number of basic researchers was stable as well, although there were only 2 researchers before 2007. Recently, each researcher has received fewer islets per shipment (49,820 IEQs in 2010 vs 75,635 IEQs in 2008) but more frequently (21.5 in 2010 vs 11.2 times per year in 2008). This paradigm shift would be desirable for researchers, because in our experience, most require <30,000 IEQs per shipment, and more frequent islet shipments results in a larger sample size for experimentation. After an initial expansion in the number of researchers requesting islets, our islet distribution activity has remained stable over the years in terms of total productivity of islets utilized for research. The current supply-versus-demand ratio in our program appears to be appropriate.
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Segregating variation for temperature-dependent sex determination in a lizard. Heredity (Edinb) 2011; 106:649-60. [PMID: 20700140 PMCID: PMC2980574 DOI: 10.1038/hdy.2010.102] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2009] [Revised: 06/16/2010] [Accepted: 07/08/2010] [Indexed: 11/08/2022] Open
Abstract
Temperature-dependent sex determination (TSD) was first reported in 1966 in an African lizard. It has since been shown that TSD occurs in some fish, several lizards, tuataras, numerous turtles and all crocodilians. Extreme temperatures can also cause sex reversal in several amphibians and lizards with genotypic sex determination. Research in TSD species indicates that estrogen signaling is important for ovary development and that orthologs of mammalian genes have a function in gonad differentiation. Nevertheless, the mechanism that actually transduces temperature into a biological signal for ovary versus testis development is not known in any species. Classical genetics could be used to identify the loci underlying TSD, but only if there is segregating variation for TSD. Here, we use the 'animal model' to analyze inheritance of sexual phenotype in a 13-generation pedigree of captive leopard geckos, Eublepharis macularius, a TSD reptile. We directly show genetic variance and genotype-by-temperature interactions for sex determination. Additive genetic variation was significant at a temperature that produces a female-biased sex ratio (30°C), but not at a temperature that produces a male-biased sex ratio (32.5°C). Conversely, dominance variance was significant at the male-biased temperature (32.5°C), but not at the female-biased temperature (30°C). Non-genetic maternal effects on sex determination were negligible in comparison with additive genetic variance, dominance variance and the primary effect of temperature. These data show for the first time that there is segregating variation for TSD in a reptile and consequently that a quantitative trait locus analysis would be practicable for identifying the genes underlying TSD.
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[Persistence and adherence: Comparison between the five classes diuretics, beta-blocker, calcium channel blockers, ACE-inhibitors and angiotensin receptor blockers as the first line in antihypertensive therapy]. MMW Fortschr Med 2011; 153 Suppl 1:21-25. [PMID: 21591327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Supraspinal demyelinating lesions in neuromyelitis optica display a typical astrocyte pathology. Neuropathol Appl Neurobiol 2011; 36:685-7. [PMID: 20618839 DOI: 10.1111/j.1365-2990.2010.01105.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
BACKGROUND Cyclic vomiting syndrome (CVS) is a functional gastrointestinal disorder that is characterized by recurrent episodes of intense vomiting. There are several postulated mechanisms involved in its pathogenesis and one potential explanation for this disorder may be linked to autonomic dysfunction. The aim of our study was to evaluate autonomic nerve function in patients with CVS prospectively. METHODS We tested the sympathetic nervous system through postural changes in heart rate (HR) and blood pressure and the thermoregulatory sweat test. The parasympathetic nervous system was tested through the HR response to deep breathing (R-R variability on EKG). KEY RESULTS A total of 20 patients who met Rome III criteria for CVS, 14 (70%) women and 6 (30%) men, and 20 controls were enrolled in the study. A total of 17 (85%) CVS subjects and 2 (10%) controls had abnormalities on thermoregulatory sweat testing (P < 0.001). A total of 7 (35%) patients and one control subject had evidence of postural tachycardia (P = 0.04) with an increase in HR > 30 on standing. Of the subjects, 18 (90%) had either abnormal sudomotor function or postural tachycardia or both. The HR response to deep breathing was normal in 19 (95%) subjects with CVS and 18 (95%) controls. CONCLUSIONS & INFERENCES The results of this study suggest that the majority of subjects (90%) with CVS have impairment of the sympathetic nervous system with postural tachycardia and/or sudomotor dysfunction while parasympathetic nerve function appears to be intact. These findings of dysautonomia in CVS have implications in both the diagnosis and treatment of these patients.
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Do synesthetes excel under object-substitution masking? Type of attention matters. J Vis 2010. [DOI: 10.1167/6.6.1075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Abstract
Charles Darwin first provided a lucid explanation of how gender differences evolve nearly 140 years ago. Yet, a disconnect remains between his theory of sexual selection and the mechanisms that underlie the development of males and females. In particular, comparisons between representatives of different phyla (i.e., flies and mice) reveal distinct genetic mechanisms for sexual differentiation. Such differences are hard to comprehend unless we study organisms that bridge the phylogenetic gap. Analysis of variation within monophyletic groups (i.e., amniotes) is just as important if we hope to elucidate the evolution of mechanisms underlying sexual differentiation. Here we review the molecular, cellular, morphological, and physiological changes associated with sex determination in reptiles. Most research on the molecular biology of sex determination in reptiles describes expression patterns for orthologs of mammalian sex-determining genes. Many of these genes have evolutionarily conserved expression profiles (i.e., DMRT1 and SOX9 are expressed at a higher level in developing testes vs. developing ovaries in all species), which suggests functional conservation. However, expression profiling alone does not test gene function and will not identify novel sex-determining genes or gene interactions. For that reason, we provide a prospectus on various techniques that promise to reveal new sex-determining genes and regulatory interactions among these genes. We offer specific examples of novel candidate genes and a new signaling pathway in support of these techniques.
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Abstract
RNA interference (RNAi) is a specific gene-silencing mechanism triggered by small interfering RNA (siRNA). The application of RNAi in the clinic requires the development of safe and effective delivery systems. Inspired by progress with lipid-based systems in drug delivery, efforts have been dedicated to the development of liposomal siRNA delivery systems. Many of the lipid-based delivery vehicles self-assemble with siRNA through electrostatic interactions with charged amines, generating multi-lamellar lipoplexes with positively charged lipid bilayers separated from one another by sheets of negatively charged siRNA strands. Internalization of lipid-based siRNA delivery systems into cells typically occurs through endocytosis; accordingly, delivery requires materials that can facilitate endosomal escape. The size of the carrier is important as carriers <100 nm in diameter have been reported to have higher accumulation levels in tumours, hepatocytes and inflamed tissue, whereas larger particles tend to be taken up by Kupffer cells or other components of the reticuloendothelial system (RES). To reduce RES uptake and increase circulation time, carriers have been modified on the surface with hydrophilic materials, such as polyethyleneglycol. Herein, we review the molecular and structural parameters of lipid-based siRNA delivery systems.
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Abstract
BACKGROUND The atopic march is well documented, but the interrelationship of food allergy (FA) and asthma is not well understood. OBJECTIVE The aim of this study was to examine the strength of the association and temporal relationships between FA and asthma. METHODS This analysis included 271 children >or=6 years (older group) and 296 children <6 years (younger group) from a family-based FA cohort in Chicago, IL. Asthma was determined by parental report of physician diagnosis. FA status was determined based on the type and timing of clinical symptoms after ingestion of a specific food, and results of prick skin test (Multi-Test II) and allergen-specific IgE (Phadia ImmunoCAP). Analyses were carried out using logistic regression accounting for important covariates and auto-correlations among siblings. Kaplan-Meier curves were used to compare the time to onset of asthma with the FA status. RESULTS Symptomatic FA was associated with asthma in both older [odds ratio (OR)=4.9, 95% confidence interval (CI): 2.5-9.5] and younger children (OR=5.3, 95% CI: 1.7-16.2). The association was stronger among children with multiple or severe food allergies, especially in older children. Children with FA developed asthma earlier and at higher prevalence than children without FA (Cox proportional hazard ratio=3.7, 95% CI: 2.2-6.3 for children >or=6 years, and hazard ratio=3.3, 95% CI: 1.1-10 for children <6 years of age). No associations were seen between asymptomatic food sensitization and asthma. CONCLUSIONS Independent of markers of atopy such as aeroallergen sensitization and family history of asthma, there was a significant association between FA and asthma. This association was even stronger in subjects with multiple food allergies or severe FA.
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Altruism versus self-centredness in the personality of depressives in the 1950s and 1990s. J Affect Disord 2009; 113:157-64. [PMID: 18486236 DOI: 10.1016/j.jad.2008.03.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2007] [Revised: 03/20/2008] [Accepted: 03/26/2008] [Indexed: 11/28/2022]
Abstract
BACKGROUND Research in personality features of patients with major depression has emphasised their tendency to set high standards for themselves. Two directions of acting on high standards have been differentiated which can be summarised as altruistic and self-centred attitudes. Typus melancholicus and narcissistic personality features are representative for them. Since both types of features are age correlated, the question had to be settled whether this reflects an individual process of social adaptation or an epochal change of values. METHODS The study is based on a representative sample of case records of first episode depressives. Two cohorts of the 1950s and two of the 1990s were sampled. In both decades, one cohorts' age of onset was below 40 whereas the other cohorts' age of onset was over 40. Each cohort comprised 20 patients, yielding a total sample of 81 patients. The information from the records was prepared and evaluated in a two step procedure according to v. Zerssen. RESULTS Increase of altruism and decrease of self-centredness with advancing age could be confirmed. There is a weak to moderate epochal decline of altruistic attitudes only in the older cohorts and a marked increase of self-centred attitudes in both, the young and the old cohorts. LIMITATIONS The assessment of depression diagnosis and personality types by means of case records in a retrospective design could limit the reliability and validity of the measured concepts. In addition, items regarding narcissistic features were not validated in other samples. CONCLUSION Both, the age effect and the epochal effect show that such aspects should be born in mind for the psychotherapeutic treatment of depressive patients. This is especially important since basic personality attitudes contribute to the etiology of depression, partly conveyed by societal values, partly by requirements of life-spans in the individual life history.
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