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Abstract
Bats are social mammals that display a wide array of social communication calls. Among them, it is common for most bats species to emit distress, agonistic, appeasement and infant isolation calls. Big brown bats (Eptesicus fuscus) are no different: They are gregarious animals living in colonies that can comprise hundreds of individuals. These bats live in North America and, typically found roosting in man-made structures like barns and attics, are considered common. They are insectivorous laryngeal echolocators, and while their calls and associated brain mechanisms in echolocation are well-documented, much less is known about their neural systems for analyzing social vocalizations. In this work we review what we know about the social lives of big brown bats and propose how to consolidate the nomenclature used to describe their social vocalizations. Furthermore, we discuss the next steps in the characterization of the social structure of this species and how these studies will advance both research in neuroethology and ecology of big brown bats.
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LB752 A cross sectional survey of skin cancer knowledge, attitudes, and sun care practices in an underserved Phoenix population. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.07.094] [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]
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[Alzemon: a prospective follow-up study of eslicarbazepine acetate monotherapy in patients with newly diagnosed epilepsy]. Rev Neurol 2021; 72:263-268. [PMID: 33851715 DOI: 10.33588/rn.7208.2020593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Eslicarbazepine acetate is a novel sodium channel blocker for use in the treatment of focal onset seizures. Prospective studies on its effectiveness in monotherapy in patients with newly diagnosed partial epilepsy in routine clinical practice are scarce. AIM To evaluate the effectiveness of eslicarbazepine as initial monotherapy in patients with newly diagnosed partial epilepsy in routine clinical practice. PATIENTS AND METHODS A prospective, multicentre, post-authorisation study. Patients with newly diagnosed partial epilepsy aged 18 years or older without previous treatment were included. The efficacy variables were: percentage of seizure-free patients, responders and reduction in monthly frequency of seizures. The safety variables analyse the 12-month retention rate and the occurrence of adverse effects. RESULTS Fifty-three patients were included. The retention rate was 77.4%. At the end of the observation period, 83% of patients were seizure-free and 92.5% had reduced their baseline frequency by 50% or more. In addition, 68% of the patients reported some adverse effect and 7.5% of them dropped out of the study for this reason. The effectiveness analysis of the subgroup of patients aged 65 years or more showed no differences with respect to the overall population. CONCLUSION Eslicarbazepine monotherapy in patients with newly diagnosed partial epilepsy, both in the general population and in the population over 65 years old, is effective and safe in routine clinical practice.
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Machine Learning in Melanoma Diagnosis. Limitations About to be Overcome. ACTAS DERMO-SIFILIOGRAFICAS 2020; 111:313-316. [PMID: 32248945 DOI: 10.1016/j.ad.2019.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Accepted: 09/16/2019] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Automated image classification is a promising branch of machine learning (ML) useful for skin cancer diagnosis, but little has been determined about its limitations for general usability in current clinical practice. OBJECTIVE To determine limitations in the selection of skin cancer images for ML analysis, particularly in melanoma. METHODS Retrospective cohort study design, including 2,849 consecutive high-quality dermoscopy images of skin tumors from 2010 to 2014, for evaluation by a ML system. Each dermoscopy image was assorted according to its eligibility for ML analysis. RESULTS Of the 2,849 images chosen from our database, 968 (34%) met the inclusion criteria for analysis by the ML system. Only 64.7% of nevi and 36.6% of melanoma met the inclusion criteria. Of the 528 melanomas, 335 (63.4%) were excluded. An absence of normal surrounding skin (40.5% of all melanomas from our database) and absence of pigmentation (14.2%) were the most common reasons for exclusion from ML analysis. DISCUSSION Only 36.6% of our melanomas were admissible for analysis by state-of-the-art ML systems. We conclude that future ML systems should be trained on larger datasets which include relevant non-ideal images from lesions evaluated in real clinical practice. Fortunately, many of these limitations are being overcome by the scientific community as recent works show.
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A laboratory assay for improved prediction of drug responses in acute myeloid leukaemia cells. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz413.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Current Challenges and Solutions in Research and Clinical Care of Older Persons Living with HIV: Findings Presented at the 9th International Workshop on HIV and Aging. AIDS Res Hum Retroviruses 2019; 35:985-998. [PMID: 31373216 PMCID: PMC6862962 DOI: 10.1089/aid.2019.0100] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
In the era of effective antiretroviral therapy, the number of older people with HIV (PWH) is increasing, and those aging with HIV are experiencing an increasing burden of age-associated comorbidities. Life expectancy among older PWH is approaching that of demographically comparable HIV-uninfected (HIV-) adults. With this changing demographic of PWH come new challenges for researchers and clinicians in how to identify, address, and manage the complex interplay of treated HIV infection and aging-associated factors. In response to these challenges, the annual International Workshop on HIV and Aging was initiated in 2009 as a multidisciplinary platform for scientific discourse on the research and clinical complications arising from the aging population of PWH. The multidisciplinary nature of the workshop has resulted in a wide range of topics addressed over the past 9 years, from basic mechanisms in aging and HIV pathogenesis, to epidemiology of aging within large cohorts, interventions, and implementation of clinical programs. Herein, we summarize the key topics discussed at the 9th Annual International Workshop on HIV and Aging 2018, including "inflammaging," mitochondrial dysfunction, exercise interventions, HIV-associated neurocognitive impairment, metabolic dysfunction, menopause, and polypharmacy. In addition to recent developments in research and clinical care, we discuss open questions and future research directions required to better understand the interaction of HIV and aging.
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121 Prognostic value of INPP5A expression in recurrent and metastatic cutaneous squamous cell carcinoma. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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C - 26Combined Effects of HIV and Past Methamphetamine Use Disorder on Frailty, Neurocognition, and Everyday Functioning. Arch Clin Neuropsychol 2018. [DOI: 10.1093/arclin/acy061.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Retrospective study of perampanel efficacy and tolerability in myoclonic seizures. Acta Neurol Scand 2018; 138:122-129. [PMID: 29573400 DOI: 10.1111/ane.12931] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/27/2018] [Indexed: 02/05/2023]
Abstract
OBJECTIVES Perampanel is an antiepileptic drug (AED) approved for add-on treatment of focal seizures (with or without generalization) and primary generalized tonic-clonic (GTC) seizures. Our objective was to explore the effectiveness and tolerability of adjunctive perampanel in patients with drug-resistant myoclonic seizures, after failure of other AEDs. MATERIALS AND METHODS Retrospective, multicenter, observational study. Data were collected from individual patient clinical files and analysed using appropriate descriptive statistics and inferential analyses. RESULTS Data are reported for 31 patients with mean age 36.4 years, who had an average epilepsy duration of 18 years, previously taken an average of 5.03 AEDs, and were taking an average of 2.4 AEDs on perampanel initiation. Patients exhibited myoclonic, GTC, absence, tonic and focal seizures, and most had associated cognitive decline and/or ataxia. Median time on perampanel was 6 months, most common dose was 6 mg, and overall retention rate was 84%. The responder rate for myoclonic seizures was defined via reduction of days with myoclonic seizures per month. At 6 months, 15 (48.4%) of the 31 patients were classed as myoclonic seizure responders, 10 (32.3%) were myoclonic seizure free, and 39% saw improvements in functional ability. Of 17 patients with GTC seizures at baseline, 9 (53%) were responders at 6 months, and 8 (47.1%) were seizure free. The most frequent side effects were psychiatric disorders, instability, dizziness and irritability, and mostly resolved with dose reduction. Five patients discontinued perampanel due to side effects. CONCLUSIONS Perampanel caused clinically meaningful improvements in patients with drug-resistant myoclonic seizures. It was generally well tolerated, but psychiatric and neurological side effects sometimes required follow-up and dose reduction.
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PO042 Early-esli study: from early add-on to monotherapy with eslicarbazepine acetate. J Neurol Psychiatry 2017. [DOI: 10.1136/jnnp-2017-abn.75] [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]
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EARLY-ESLI study: Long-term experience with eslicarbazepine acetate after first monotherapy failure. Acta Neurol Scand 2017; 136:254-264. [PMID: 27935017 DOI: 10.1111/ane.12720] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/17/2016] [Indexed: 02/01/2023]
Abstract
PURPOSE Evaluate real-life experience with eslicarbazepine acetate (ESL) after first monotherapy failure in a large series of patients with focal epilepsy. METHOD Multicentre, retrospective, 1-year, observational study in patients older than 18 years, with focal epilepsy, who had failed first antiepileptic drug monotherapy and who received ESL. Data from clinical records were analysed at baseline, 3, 6 and 12 months to assess effectiveness and tolerability. RESULTS Eslicarbazepine acetate was initiated in 253 patients. The 1-year retention rate was 92.9%, and the final median dose of ESL was 800 mg. At 12 months, 62.3% of patients had been seizure free for 6 months; 37.3% had been seizure free for 1 year. During follow-up, 31.6% of the patients reported ESL-related adverse events (AEs), most commonly somnolence (8.7%) and dizziness (5.1%), and 3.6% discontinued due to AEs. Hyponatraemia was observed in seven patients (2.8%). After starting ESL, 137 patients (54.2%) withdrew the prior monotherapy and converted to ESL monotherapy; 75.9% were seizure free, 87.6% were responders, 4.4% worsened, and 23.4% reported ESL-related AEs. CONCLUSION Use of ESL after first monotherapy failure was associated with an optimal seizure control and tolerability profile. Over half of patients were converted to ESL monotherapy during follow-up.
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Ultra-High Spatial Resolution, Multi-Energy CT using Photon Counting Detector Technology. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2017; 10132. [PMID: 28392615 DOI: 10.1117/12.2255589] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Two ultra-high-resolution (UHR) imaging modes, each with two energy thresholds, were implemented on a research, whole-body photon-counting-detector (PCD) CT scanner, referred to as sharp and UHR, respectively. The UHR mode has a pixel size of 0.25 mm at iso-center for both energy thresholds, with a collimation of 32 × 0.25 mm. The sharp mode has a 0.25 mm pixel for the low-energy threshold and 0.5 mm for the high-energy threshold, with a collimation of 48 × 0.25 mm. Kidney stones with mixed mineral composition and lung nodules with different shapes were scanned using both modes, and with the standard imaging mode, referred to as macro mode (0.5 mm pixel and 32 × 0.5 mm collimation). Evaluation and comparison of the three modes focused on the ability to accurately delineate anatomic structures using the high-spatial resolution capability and the ability to quantify stone composition using the multi-energy capability. The low-energy threshold images of the sharp and UHR modes showed better shape and texture information due to the achieved higher spatial resolution, although noise was also higher. No noticeable benefit was shown in multi-energy analysis using UHR compared to standard resolution (macro mode) when standard doses were used. This was due to excessive noise in the higher resolution images. However, UHR scans at higher dose showed improvement in multi-energy analysis over macro mode with regular dose. To fully take advantage of the higher spatial resolution in multi-energy analysis, either increased radiation dose, or application of noise reduction techniques, is needed.
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Renal Stone Characterization using High Resolution Imaging Mode on a Photon Counting Detector CT System. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2017; 10132. [PMID: 28458443 DOI: 10.1117/12.2255651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
In addition to the standard-resolution (SR) acquisition mode, a high-resolution (HR) mode is available on a research photon-counting-detector (PCD) whole-body CT system. In the HR mode each detector consists of a 2x2 array of 0.225 mm × 0.225 mm subpixel elements. This is in contrast to the SR mode that consists of a 4x4 array of the same sub-elements, and results in 0.25 mm isotropic resolution at iso-center for the HR mode. In this study, we quantified ex vivo the capabilities of the HR mode to characterize renal stones in terms of morphology and mineral composition. Forty pure stones - 10 uric acid (UA), 10 cystine (CYS), 10 calcium oxalate monohydrate (COM) and 10 apatite (APA) - and 14 mixed stones were placed in a 20 cm water phantom and scanned in HR mode, at radiation dose matched to that of routine dual-energy stone exams. Data from micro CT provided a reference for the quantification of morphology and mineral composition of the mixed stones. The area under the ROC curve was 1.0 for discriminating UA from CYS, 0.89 for CYS vs COM and 0.84 for COM vs APA. The root mean square error (RMSE) of the percent UA in mixed stones was 11.0% with a medium-sharp kernel and 15.6% with the sharpest kernel. The HR showed qualitatively accurate characterization of stone morphology relative to micro CT.
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Lung Nodule Volume Quantification and Shape Differentiation with an Ultra-High Resolution Technique on a Photon Counting Detector CT System. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2017; 10132. [PMID: 28392613 DOI: 10.1117/12.2255736] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A new ultra high-resolution (UHR) mode has been implemented on a whole body photon counting-detector (PCD) CT system. The UHR mode has a pixel size of 0.25 mm by 0.25 mm at the iso-center, while the conventional (macro) mode is limited to 0.5 mm by 0.5 mm. A set of synthetic lung nodules (two shapes, five sizes, and two radio-densities) was scanned using both the UHR and macro modes and reconstructed with 2 reconstruction kernels (4 sets of images in total). Linear regression analysis was performed to compare measured nodule volumes from CT images to reference volumes. Surface curvature was calculated for each nodule and the full width half maximum (FWHM) of the curvature histogram was used as a shape index to differentiate sphere and star shape nodules. Receiver operating characteristic (ROC) analysis was performed and area under the ROC curve (AUC) was used as a figure of merit for the differentiation task. Results showed strong linear relationship between measured nodule volume and reference standard for both UHR and macro mode. For all nodules, volume estimation was more accurate using UHR mode with sharp kernel (S80f), with lower mean absolute percent error (MAPE) (6.5%) compared with macro mode (11.1% to 12.9%). The improvement of volume measurement from UHR mode was more evident particularly for small nodule size (3mm, 5mm), or star-shape nodules. Images from UHR mode with sharp kernel (S80f) consistently demonstrated the best performance (AUC = 0.85) when separating star from sphere shape nodules among all acquisition and reconstruction modes. Our results showed the advantages of UHR mode on a PCD CT scanner in lung nodule characterization. Various clinical applications, including quantitative imaging, can benefit substantially from this high resolution mode.
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Erratum to "Safety, efficacy and outcome-related factors of perampanel over 12months in a real-world setting: The FYDATA study" [Epilepsy Res. 126 (2016) 201-210]. Epilepsy Res 2016; 129:174-175. [PMID: 28017504 DOI: 10.1016/j.eplepsyres.2016.12.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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A statistical algorithm showing coenzyme Q 10 and citrate synthase as biomarkers for mitochondrial respiratory chain enzyme activities. Sci Rep 2016; 6:15. [PMID: 28442759 PMCID: PMC5431365 DOI: 10.1038/s41598-016-0008-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 08/23/2016] [Indexed: 11/15/2022] Open
Abstract
Laboratory data interpretation for the assessment of complex biological systems remains a great challenge, as occurs in mitochondrial function research studies. The classical biochemical data interpretation of patients versus reference values may be insufficient, and in fact the current classifications of mitochondrial patients are still done on basis of probability criteria. We have developed and applied a mathematic agglomerative algorithm to search for correlations among the different biochemical variables of the mitochondrial respiratory chain in order to identify populations displaying correlation coefficients >0.95. We demonstrated that coenzyme Q10 may be a better biomarker of mitochondrial respiratory chain enzyme activities than the citrate synthase activity. Furthermore, the application of this algorithm may be useful to re-classify mitochondrial patients or to explore associations among other biochemical variables from different biological systems.
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Safety, efficacy and outcome-related factors of perampanel over 12 months in a real-world setting: The FYDATA study. Epilepsy Res 2016; 126:201-10. [DOI: 10.1016/j.eplepsyres.2016.08.001] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 07/18/2016] [Accepted: 08/03/2016] [Indexed: 01/05/2023]
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SU-G-IeP2-15: Virtual Insertion of Digital Kidney Stones Into Dual-Source, Dual- Energy CT Projection Data. Med Phys 2016. [DOI: 10.1118/1.4957020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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WE-FG-207B-09: Experimental Assessment of Noise and Spatial Resolution in Virtual Non-Contrast Dual-Energy CT Images Across Multiple Patient Sizes and CT Systems. Med Phys 2016. [DOI: 10.1118/1.4957954] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Long-Term Single-Cell Culture of Human Pluripotent Stem Cells on Precoated rLaminin-521 Cultureware in Multiple Culture Media. Cytotherapy 2016. [DOI: 10.1016/j.jcyt.2016.03.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Treatment monitoring of 0.5% 5-fluorouracil and 10% salicylic acid in clinical and subclinical actinic keratoses with the combination of optical coherence tomography and reflectance confocal microscopy. J Eur Acad Dermatol Venereol 2015; 30:258-65. [DOI: 10.1111/jdv.13445] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Accepted: 09/04/2015] [Indexed: 11/29/2022]
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FYDATA STUDY: PERAMPANEL STUDY IN A REAL-LIFE SETTING. Journal of Neurology, Neurosurgery and Psychiatry 2015. [DOI: 10.1136/jnnp-2015-312379.55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
FYDATA is a multi-centre, retrospective, 1-year, observational study (inclusion criteria: written informed consent to review clinical charts; patients ≥12 years old; partial-onset seizure [POS] diagnosis; perampanel treatment according to clinical practice as add-on therapy; patients with ≥1 POS in year prior to starting perampanel). The source of data was patient clinical records collected by physicians. An interim analysis was performed at 3 months in 111 patients (mean age: 37.8 years; mean epilepsy duration: 24 years). Mean seizure number/month at onset was 19.3. At baseline, patients had tried a mean of 8.3 antiepileptic drugs (AEDs) and half were taking ≥3 concomitant AEDs. 31% of patients had a comorbid psychiatric condition. At 3 months, with a mean perampanel dose of 5.4 mg, 9% of patients were seizure-free and 44% were responders (≥50% reduction in seizure number). Adverse events were reported by 41.4% of patients; most frequent were irritability (13.5%), somnolence (10.8%) and dizziness (9.9%). Irritability and aggressiveness were more frequent if patients had a comorbid psychiatric condition – personality disorder/hyperactivity. Preliminary results at 3 months in refractory POS patients receiving adjunctive perampanel in a real-life setting showed a promising response. Study sponsors: Eisai Inc. Writing support: Choice Healthcare Solutions; funding, Eisai Ltd.
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Patients with ankylosing spondylitis have been breast fed less often than healthy controls: a case–control retrospective study. Ann Rheum Dis 2015; 75:879-82. [DOI: 10.1136/annrheumdis-2015-208187] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 09/20/2015] [Indexed: 11/04/2022]
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Mitochondrial DNA haplogroups associated with neovascular age-related degeneration in a Spain population. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0608] [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]
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Physical Activity is Associated with Better Neurocognitive and Everyday Functioning Among Older Adults with HIV Disease. AIDS Behav 2015; 19:1470-7. [PMID: 25731660 PMCID: PMC4527965 DOI: 10.1007/s10461-015-1024-z] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We examined the association between physical activity (PA), neurocognitive impairment (NCI), and instrumental activities of daily living (IADLs) among older HIV+ persons. One hundred older HIV+ adults completed the International Physical Activity Questionnaire, a neurocognitive battery, and IADL scale. Higher levels of moderate PA were associated with lower odds of NCI (p = 0.01), even when covariates were modeled. The association between moderate PA and NCI was driven by executive function (p = 0.04). Higher levels of moderate PA were also associated with lower odds of IADL Dependence (p = 0.03), although this fell to a trend (p = 0.08) when including covariates. Follow-up analysis showed those with both NCI and IADL Dependence had lower moderate PA than those with neither (p = 0.03). While these cross-sectional findings suggest PA is associated with better neurocognitive and everyday functioning in older HIV+ adults, longitudinal studies utilizing objective PA methods are needed to evaluate directionality and mechanisms.
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From FAST to E-FAST: an overview of the evolution of ultrasound-based traumatic injury assessment. Eur J Trauma Emerg Surg 2015; 42:119-26. [PMID: 26038031 DOI: 10.1007/s00068-015-0512-1] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 03/03/2015] [Indexed: 01/12/2023]
Abstract
Ultrasound is a ubiquitous and versatile diagnostic tool. In the setting of acute injury, ultrasound enhances the basic trauma evaluation, influences bedside decision-making, and helps determine whether or not an unstable patient requires emergent procedural intervention. Consequently, continued education of surgeons and other acute care practitioners in performing focused emergency ultrasound is of great importance. This article provides a synopsis of focused assessment with sonography for trauma (FAST) and the extended FAST (E-FAST) that incorporates basic thoracic injury assessment. The authors also review key pitfalls, limitations, controversies, and advances related to FAST, E-FAST, and ultrasound education.
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Lower platelet mitochondrial function in severe septic patients than in controls. Crit Care 2015. [PMCID: PMC4473053 DOI: 10.1186/cc14106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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P12.02 * BRAINSTEM HEMANGIOBLASTOMAS IN PATIENTS WITH VON HIPPEL-LINDAU DISEASE - SURGICAL CONSIDERATIONS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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P11.01 * THE ROLE OF SURGERY IN PRIMARY CENTRAL NERVOUS SYSTEM LYMPHOMAS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Renal function of cancer patients "fit" for Cisplatin chemotherapy: physician perspective. Gulf J Oncolog 2014; 1:64-72. [PMID: 25316394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2014] [Indexed: 06/04/2023]
Abstract
UNLABELLED Renal insufficiency is prevalent among cancer patients and it poses a hindrance in using cisplatin. We sought to describe the baseline renal function of our patients who were considered "fit" for cisplatin, along with saline hydration and mannitol diuresis, and determine occurrence of nephrotoxicity during chemotherapy. METHODS A retrospective study from 2008 to 2012 of 100 patients who were given cisplatin was done. Demographic and clinical variables were recorded. Creatinine Clearance was calculated using Cockcroft-Gault formula. Nephrotoxicity was defined as an increase of 0.5mg/dL or more after cisplatin infusion. Descriptive statistics, ANOVA, logistic regression analysis were done. RESULTS A total of 100 patients were "fit" for cisplatin, with a mean age of 52 years, mean creatinine of 0.83mg/dL, CrCl of 94.14ml/ min, and ECOG performance status of 0-2. 12 patients have Chronic Kidney Disease (CKD) stage of 3, 42 patients with stage 2, 46 patients with stage 1. After cisplatin treatment, mean creatinine increased to 0.95mg/dL, and mean CrCl decreased to 83.7ml/min. Nine patients developed nephrotoxicity; all resolved with hydration. Patients with nephrotoxicity were significantly different from those without, in terms of weight p 0.012. None of the variables were predictors of nephrotoxicity. CONCLUSION With hydration and mannitol diuresis, patients with ECOG 2, normal creatinine, CKD stage 3 or better, CrCl of 50ml/min and above are "fit" for cisplatin. During the study period, 9% of the patients "fit" for cisplatin developed nephrotoxicity, all resolved with conservative management. There was an increase in mean creatinine and a decrease in the mean CrCl after cisplatin.
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Clinical and Echocardiographic Presentation of Rejection Episodes Following Heart Transplantation. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.658] [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] Open
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SPIHT-Based Echocardiogram Compression: Clinical Evaluation and Recommendations of Use. IEEE J Biomed Health Inform 2013. [DOI: 10.1109/titb.2012.2227336] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstracts of the 10th Congress of the European Association of NeuroOncology. Marseille, France. September 6-9, 2012. Neuro Oncol 2012; 14 Suppl 3:iii1-109. [PMID: 22977921 DOI: 10.1093/neuonc/nos183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
siRNA (small interfering RNA) and shRNA (small hairpin RNA) are powerful and commonly used tools in biomedical research. Currently, siRNAs are generally designed as two 21 nt strands of RNA that include a 19 nt completely complementary part and a 2 nt overhang. However, since the si/shRNAs use the endogenous miRNA machinery for gene silencing and the miRNAs are generally 22 nt in length and contain multiple internal mismatches, we tested if the functionality can be increased by designing the si/shRNAs to mimic a miRNA structure. We systematically investigated the effect of single or multiple mismatches introduced in the passenger strand at different positions on siRNA functionality. Mismatches at certain positions could significantly increase the functionality of siRNAs and also, in some cases decreased the unwanted passenger strand functionality. The same strategy could also be used to design shRNAs. Finally, we showed that both si and miRNA structured oligos (siRNA with or without mismatches in the passenger strand) can repress targets in all individual Ago containing cells, suggesting that the Ago proteins do not differentiate between si/miRNA-based structure for silencing activity.
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Screening for nuclear genetic defects in the ATP synthase-associated genes TMEM70, ATP12 and ATP5E in patients with 3-methylglutaconic aciduria. Clin Genet 2011; 80:297-300. [PMID: 21815885 DOI: 10.1111/j.1399-0004.2011.01650.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Biochemical parameters to assess choroid plexus dysfunction in Kearns–Sayre syndrome. Clin Biochem 2011. [DOI: 10.1016/j.clinbiochem.2011.03.117] [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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Maternal neural responses to infant cries and faces: relationships with substance use. Front Psychiatry 2011; 2:32. [PMID: 21720537 PMCID: PMC3118477 DOI: 10.3389/fpsyt.2011.00032] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Accepted: 05/22/2011] [Indexed: 12/29/2022] Open
Abstract
Substance abuse in pregnant and recently post-partum women is a major public health concern because of effects on the infant and on the ability of the adult to care for the infant. In addition to the negative health effects of teratogenic substances on fetal development, substance use can contribute to difficulties associated with the social and behavioral aspects of parenting. Neural circuits associated with parenting behavior overlap with circuits involved in addiction (e.g., frontal, striatal, and limbic systems) and thus may be co-opted for the craving/reward cycle associated with substance use and abuse and be less available for parenting. The current study investigates the degree to which neural circuits associated with parenting are disrupted in mothers who are substance-using. Specifically, we used functional magnetic resonance imaging to examine the neural response to emotional infant cues (faces and cries) in substance-using compared to non-using mothers. In response to both faces (of varying emotional valence) and cries (of varying distress levels), substance-using mothers evidenced reduced neural activation in regions that have been previously implicated in reward and motivation as well as regions involved in cognitive control. Specifically, in response to faces, substance users showed reduced activation in prefrontal regions, including the dorsolateral and ventromedial prefrontal cortices, as well as visual processing (occipital lobes) and limbic regions (parahippocampus and amygdala). Similarly, in response to infant cries, substance-using mothers showed reduced activation relative to non-using mothers in prefrontal regions, auditory sensory processing regions, insula and limbic regions (parahippocampus and amygdala). These findings suggest that infant stimuli may be less salient for substance-using mothers, and such reduced saliency may impair developing infant-caregiver attachment and the ability of mothers to respond appropriately to their infants.
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Epidemiology of bovine anaplasmosis in dairy herds from Costa Rica. Vet Parasitol 2010; 177:359-65. [PMID: 21236580 DOI: 10.1016/j.vetpar.2010.12.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2009] [Revised: 12/05/2010] [Accepted: 12/07/2010] [Indexed: 11/16/2022]
Abstract
Bovine anaplasmosis is endemic and occurs in almost all areas of livestock production of Costa Rica. The aim of this study was to determine the seroprevalence and risk factors of anaplasmosis in dairy farms of Costa Rica by the recombinant truncated MSP-5 (rMSP-5) enzyme-linked immunosorbent assay (ELISA). Serum samples were obtained from 733 cattle from 20 commercial dairy herds of Costa Rica. The overall seroprevalence was 37.2% and herd seroprevalence ranged from 20.0 to 72.0%. The age-specific seroprevalence was 49.3% in young and 33.4% in adult animals. The main risk factors associated with seroprevalence were season of occurrence of clinical cases (rainy season) (OR=22.8), presence of tabanids (OR=9.5) and stable flies (OR=6.2), stable flies control measures (OR=3.2), non-use of ear tattoos (OR=2.8), interval of veterinary visit (≤ 60 days) (OR=2.7), altitude of the farms (<800 masl) (OR=2.6) and age (<2 years) (OR=1.8). The results indicated that exposure of cattle to Anaplasma marginale is common in dairy herds of Costa Rica and endemic instability situation probably is due to inadequate vector control.
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[Leigh syndrome caused by the mitochondrial DNA G14459A mutation in a Mexican family]. Rev Neurol 2009; 49:248-250. [PMID: 19714555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
INTRODUCTION Leigh syndrome is a neurodegenerative and progressive disease that appears usually in childhood due to defects in nuclear or mitochondrial genome. The mutation G14459A in mitochondrial DNA has been associated previously to Leber hereditary optic neuropathy and recently to Leigh syndrome. CASE REPORT A 10 months-old Mexican girl diagnosed of Leigh syndrome. Molecular-genetic studies detected the mutation G14459A in a percentage close to homoplasmy and in low heteroplasmy in her mother. The rest of the maternally related family members analyzed were negative. CONCLUSION The G14459A mutation, although not very frequently associated to Leigh syndrome, should be analyzed in patients that do not present the most common point mutations.
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[Giuseppe Attardi: mitochondrial genetic system and its influence in the study of the mitochondrial diseases]. Rev Neurol 2008; 47:483-487. [PMID: 18985599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
AIM To describe the scientific contributions and biography of Giuseppe Attardi (1923-2008), in particular his work on the human mitochondrial genetic system of crucial importance for the discovery and understanding of the mechanisms that produce the mitochondrial diseases. DEVELOPMENT Giuseppe Attardi was an Italian-born medical doctor that worked with outstanding researchers as James Watson, Francois Jacob, and Renato Dulbecco, all Nobel Prizes of Medicine until 1963 that was promoted to Professor of the California Institute of Technology in Pasadena (USA). In 1967 discovered the human mitochondrial RNA, a little later the mitochondrial ribosomes and proteins encoded in the genome, in 1981 showed the genetic and transcription map of the mitochondrial DNA, and in 1983 described the proteins codified in this genome, all of them components of the oxidative phosphorylation system, metabolic pathway that leads to the synthesis of ATP. Later, he developed a technique, widely used nowadays, to study the mechanism by which the mutations in the mitochondrial DNA altered the cellular function and originated the mitochondrial diseases. In 1999, demonstrated the role of the mitocondrial DNA, and the mutations produced along the life, in aging.
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NARP syndrome in a patient harbouring an insertion in the MT-ATP6 gene that results in a truncated protein. J Med Genet 2008; 46:64-7. [DOI: 10.1136/jmg.2008.060616] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Cognitive dysfunction and hypogonadotrophic hypogonadism in a Brazilian patient with mitochondrial neurogastrointestinal encephalomyopathy and a novel ECGF1 mutation. Eur J Neurol 2007; 14:581-5. [PMID: 17437622 DOI: 10.1111/j.1468-1331.2007.01720.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Mitochondrial neurogastrointestinal encephalomyopathy (MNGIE) is caused by mutations in the thymidine phosphorylase gene (ECGF1). We present the first detailed report of a Brazilian MNGIE patient, harboring a novel ECGF1 homozygous mutation (C4202A, leading to a premature stop codon, S471X). Multiple deletions and the T5814C change were found in mitochondrial DNA. Together with gastrointestinal symptoms, endocrine involvement and memory dysfunction, not reported in MNGIE to date, were the most preeminent features.
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[Mitochondrial encephalomyopathy, lactic acidosis and stroke-like episodes (MELAS) with the A3243G mutation of the tRNALeu(UUR) gene of mtDNA in native American haplogroup B2]. Rev Neurol 2007; 44:18-22. [PMID: 17199225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
INTRODUCTION Mitochondrial encephalopathy, lactic acidosis and cerebrovascular accident syndrome (MELAS) is, from the clinical point of view, one of the best studied mitochondrial multisystemic disorders. This disease has mainly been associated to the mitochondrial desoxyribonucleic acid (mtDNA) mutation A3243G located in the tRNALeu(UUR) gene. Although a relation between European haplogroups and the presence of the 3243 mutation has not been described, nothing is known about the presence of this mutation in native American haplogroups. CASE REPORT A 12 year-old female Mexican patient diagnosed with MELAS is reported. Besides neurological, biochemical and cytological examination, we also analyzed the particular mtDNA mutations related to MELAS and the whole genome was sequenced to determine the mitochondrial haplogroup. The A3243G mutation was detected in the patient and maternal relatives (mother and siblings, all of them asymptomatic). The genotype corresponds to the native American haplogroup B2 and contains two private non-synonymous polymorfisms. CONCLUSION All the members of the family studied present different percentage of the A3243G mutation, being the patient who presented the highest value. The mtDNA genotype corresponds to the native American haplogroup B2 and the private polymorphisms do not confer any phenotypic modification in MELAS syndrome.
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[Diseases of the human mitochondrial oxidative phosphorylation system]. Rev Neurol 2006; 43:416-24. [PMID: 17006861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
AIM The diseases of the oxidative phosphorylation system consist of a group of disorders originated by a deficient synthesis of adenosine triphosphate (ATP). These diseases are increasingly being diagnosed among patients with multisystemic disorders. Mitochondrial deoxyribonucleic acid (mtDNA) mutations are usually maternally inherited, but they also can be sporadic or secondary to nuclear mutations, that are inherited in a Mendelian mode, or due to environmental hazards. In this review we will update, from a genetic point of view, the knowledge on human mitochondrial diseases, remarking the difficulties to study these pathologies. DEVELOPMENT To mirror these difficulties, we will use selected examples of mutations in the mitochondrial genome, and review recent advances on mitochondrial pathology due to mutations in the nuclear genes codifying for mitochondrial proteins that participate in a good performance of the oxidative phosphorylation system. CONCLUSIONS Sequencing of the complete human mtDNA should be part of the basic profile in the study of mitochondrial diseases. Due to the increasing number of nuclear genes involved in the oxidative phosphorylation system performance, their analysis should be based on solid biochemical clues.
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[Mitochondrial DNA deletions in Kearns-Sayre syndrome]. Neurologia 2006; 21:357-64. [PMID: 16977556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023] Open
Abstract
INTRODUCTION Kearns-Sayre syndrome (KSS) is a mitochondrial disorder characterized by progressive external ophthalmoplegia, pigmentary retinopathy, onset before 20 years, and ragged-red fibers on muscle biopsy. KSS has been associated to mitochondrial DNA (mtDNA) mutations. We report neurological manifestations and mtDNA deletions in KSS. METHODS Six KSS patients underwent neurological examination, biochemical analysis (muscle enzymes, lactate, cerebrospinal fluid analysis), electromicrography, muscle biopsy (Gomori stain, electronic microscopy), electrocardiogram, echocardiography, MRI/CT scan. MtDNA deletions were studied in blood and muscle samples using Southern blotting and long polymerase chain reaction. RESULTS Four males and two females (mean age: 27.7 years; range: 17-42; mean age at onset: 8.2 years) were studied. Initial symptoms were ptosis and gaze restriction, fatigue, exercise intolerance and proximal limb weakness. Syncope and neurosensory hypoacusia were initial symptoms in two patients. All of them presented a unique deletion in the mitochondrial genome, in heteroplasmy, and their size was in the range of 4,420 and 9,437 basis pairs. Three of these deletions are reported for the first time in this article. Most of the deletions are flanked by small direct repeats elements. CONCLUSIONS Proximal muscle weakness and fatigue appear frequently in KSS patients during follow up. The syndrome in these patients has been caused by mtDNA deletions.
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[Evolution until death of two members of a family with A3243G mutation and MELAS phenotype versus diabetes mellitus]. Neurologia 2006; 21:327-32. [PMID: 16799910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023] Open
Abstract
INTRODUCTION The A3243G gene tRNALeu(UUR) mutation has different phenotypic expressions. The clinical outcome and survival of each phenotype are mostly unknown. We followed-up two of three family members, carriers of the A3243G mutation, until their death. CLINICAL CASE The proband case had MELAS (mitochondrial myopathy, encephalopathy, lactacidosis, stroke) phenotype. Although he presented with a stroke-like episode, he developed recurrent generalized and partial epileptic seizures without associated stroke-like episodes over time as well as slowly progressive dementia. The cognitive performance greatly worsened after a complex partial epileptic status. He died from bronchopneumonia and septic shock eleven years after diagnosis. His sister remains asymptomatic. His mother was diagnosed of diabetes mellitus and deafness when she was 53. Seventeen years later she developed a single stroke-like episode. She died one year after from acute renal failure and cardiogenic shock following sympathectomy for ischemic angiopathy. In the MELAS case neither idebenone treatment nor valproate substitution by other anticonvulsants reduced seizure frequency nor the spreading of lesions evaluated by MRI. In the phenotype with diabetes and deafness the outcome diabetes mellitus was as expected. CONCLUSIONS In this family with A3243G mutation, the phenotype with neurosensorial deafness and diabetes mellitus seems to have longer survival than the MELAS phenotype. The cause of death in both cases was closely related to medical complications prevalent in each patient at the time of death.
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Tandem screening of toxic compounds on GFP-labeled bacteria and cancer cells in microtiter plates. Biochem Biophys Res Commun 2005; 335:367-72. [PMID: 16081045 DOI: 10.1016/j.bbrc.2005.07.086] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2005] [Accepted: 07/16/2005] [Indexed: 11/16/2022]
Abstract
A 96-well fluorescence-based assay has been developed for the rapid screening of potential cytotoxic and bacteriocidal compounds. The assay is based on detection of green fluorescent protein (GFP) in HeLa human carcinoma cells as well as gram negative (Escherichia coli) and gram positive bacteria (Mycobacterium avium). Addition of a toxic compound to the GFP marked cells resulted in the loss of the GFP fluorescence which was readily detected by fluorometry. Thirty-nine distinct naphthoquinone derivatives were screened and several of these compounds were found to be toxic to all cell types. Apart from differences in overall toxicity, two general types of toxic compounds were detected, those that exhibited toxicity to two or all three of the cell types and those that were primarily toxic to the HeLa cells. Our results demonstrate that the parallel screening of both eukaryotic and prokaryotic cells is not only feasible and reproducible but also cost effective.
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