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1.
J Wildl Dis ; 2024 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-38717896

RESUMO

We report tracking of bacterial skin microbiota for two bare-nosed wombats (Vombatus ursinus) following in situ treatment for sarcoptic mange. Sarcoptes scabiei, the etiologic agent, has dramatic effects on skin microbiota. Our case reports show differing disease trajectory and bacterial beta diversity between the two treated individuals.

2.
J Nat Prod ; 86(7): 1690-1697, 2023 07 28.
Artigo em Inglês | MEDLINE | ID: mdl-37411021

RESUMO

Methicillin-resistant Staphylococcus aureus (MRSA) is a major human pathogen that causes a wide range of infections. Its resistance to ß-lactam antibiotics complicates treatment due to the limited number of antibiotics with activity against MRSA. To investigate development of alternative therapeutics, the mechanisms that mediate antibiotic resistance in MRSA need to be fully understood. In this study, MRSA cells were subjected to antibiotic stress from methicillin in combination with three cannabinoid compounds and analyzed using proteomics to assess the changes in physiology. Subjecting MRSA to nonlethal levels of methicillin resulted in an increased production of penicillin-binding protein 2 (PBP2). Exposure to cannabinoids showed antibiotic activity against MRSA, and differential proteomics revealed reduced levels of proteins involved in the energy production as well as PBP2 when used in combination with methicillin.


Assuntos
Canabinoides , Staphylococcus aureus Resistente à Meticilina , Humanos , Antibacterianos/farmacologia , Antibacterianos/metabolismo , Proteínas de Bactérias/metabolismo , Meticilina/metabolismo , Staphylococcus aureus Resistente à Meticilina/efeitos dos fármacos , Testes de Sensibilidade Microbiana , Proteínas de Ligação às Penicilinas/metabolismo , Proteômica , Canabinoides/química , Canabinoides/farmacologia
3.
J Osteopath Med ; 123(10): 485-492, 2023 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-37435694

RESUMO

CONTEXT: Medical education is stressful and can adversely affect the health and well-being of students. Although mindfulness-based interventions (MBIs) have been successfully utilized in other settings, little is known about the use of student-led interventions in undergraduate medical education. OBJECTIVES: The objectives of this study are to assess student satisfaction with four student-selected and student-led mindfulness activities incorporated into mandatory small-group sessions, the immediate impact of these activities on student stress levels, and student use of these activities outside the mindfulness sessions. METHODS: First-year osteopathic medical students voluntarily participated in weekly student-selected and student-led mindfulness activities once a week for 8 consecutive weeks during regularly scheduled class time. Activities included yoga postures, the 4-7-8 breathing technique, progressive muscle relaxation (PMR), and values affirmation. Each activity was completed twice during the 8 weeks. After each session, students could anonymously complete an electronic survey assessing participation, change in stress level, satisfaction with the activity, and mindfulness activities practiced outside the session. Survey questions included dichotomous, Likert-like, and multiple-choice responses. A chi-square test was utilized to analyze student responses from each week about the decrease in stress level, and satisfaction with the mindfulness activity, and student use of the activities outside the classroom. Wilcoxon rank sum tests were utilized to determine associations between outcomes, and a logistic regression model was utilized to determine relationships between the change in stress levels and other outcomes. RESULTS: Of the 154 first-year medical students initially enrolled in the 2021-2022 academic year, 14 (9.1 %) to 94 (61.0 %) actively participated in the weekly mindfulness activities. Students indicated that the 4-7-8 breathing technique was the activity most practiced outside the mindfulness sessions (32.3 %, 43/133 total responses) across all weeks. The mindfulness activity with the highest percentage of reported decrease in stress level was the yoga postures in week 5 (94.8 %, 36/38), and both weeks of the yoga activities had the highest reported student satisfaction (95.7 %, 90/94 for week 1; 92.1 %, 35/38 for week 5). For students who answered the change in stress level question, the stress level decrease was related to participation in the weekly activity for weeks 1 through 7 (all p<0.03). For students who participated in mindfulness sessions, the odds of reporting a reduction in the stress level were 16.6 times (95 % CI, 6.8-47.2; p<0.001) that of students who did not participate. For those satisfied with the activities, the odds of reporting a reduction in stress level were 6.7 (95 % CI, 3.3-13.9; p<0.001). CONCLUSIONS: Results suggested that the student-selected and student-led mindfulness activities may successfully reduce medical student stress in students who actively participate. However, additional research is needed to determine how to optimize mindfulness curricula implementation.


Assuntos
Atenção Plena , Estudantes de Medicina , Yoga , Humanos , Projetos Piloto , Currículo
4.
Nutrition ; 108: 111964, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36682268

RESUMO

OBJECTIVES: Malnutrition in pulmonary fibrosis may influence clinical outcomes negatively. This project aimed to investigate if weight, unintended weight loss (UWL) at baseline and weight development, and signs of sarcopenia measured by the strength, assistance with the walking, rising from a chair, climbing stairs, and falls questionnaire (SARC-F) are associated with hospital admissions and mortality for idiopathic pulmonary fibrosis outpatients in ≤1 y as well as referral to pulmonary rehabilitation. METHODS: At baseline, prevalence of weight and UWL were sought in a cross-sectional questionnaire study, consecutively, including 100 patients in an outpatient clinic. Medical records were sought for time from diagnosis and comorbidities. One year after inclusion weight, UWL and SARC-F were collected by phone interviews, and medical records were revisited for clinical outcomes. RESULTS: Of the 100 patients, two patients died and seven were lost to follow-up. The prevalence of UWL increased within the year (10-13%), and the amount of UWL increased (9.1-11.8 kg). Patients with a UWL at baseline had a significantly higher risk of mortality (odds ratio = 29.8; P = 0.037). UWL at baseline was associated with risk of hospital admissions (odds ratio = 14.7; P = 0.009). Based on the results from SARC-F, 20.9% have signs of sarcopenia. UWL at follow-up was associated with the risk of sarcopenia by SARC-F. Patients with risk of sarcopenia and those with body mass index ≥30 kg/m2 were to a higher degree offered pulmonary rehabilitation; however, participation was low. CONCLUSIONS: UWL at baseline was significantly associated with risk of hospital admissions and mortality in ≤1 y in idiopathic pulmonary fibrosis outpatients. Patients with signs of sarcopenia and body mass index ≥30 kg/m2 were most often referred to pulmonary rehabilitation.


Assuntos
Fibrose Pulmonar Idiopática , Sarcopenia , Humanos , Idoso , Sarcopenia/epidemiologia , Seguimentos , Estudos Transversais , Avaliação Geriátrica/métodos , Inquéritos e Questionários
5.
Parasit Vectors ; 15(1): 323, 2022 Sep 13.
Artigo em Inglês | MEDLINE | ID: mdl-36100860

RESUMO

BACKGROUND: Sarcoptes scabiei is globally distributed and one of the most impactful mammalian ectoparasites. Sarcoptic mange, caused by infection with S. scabiei, causes disruption of the epidermis and its bacterial microbiota, but its effects on host fungal microbiota and on the microbiota of marsupials in general have not been studied. Here, we (i) examine bacterial and fungal microbiota changes associated with mange in wild bare-nosed wombats (BNWs) and (ii) evaluate whether opportunistic pathogens are potentiated by S. scabiei infection in this species. METHODS: Using Amplicon Sequencing of the 16S rRNA and ITS2 rDNA genes, we detected skin microbiota changes of the bare-nosed wombat (Vombatus ursinus). We compared the alpha and beta diversity among healthy, moderate, and severe disease states using ANOVA and PERMANOVA with nesting. Lastly, we identified taxa that differed between disease states using analysis of composition of microbes (ANCOM) testing. RESULTS: We detected significant changes in the microbial communities and diversity with mange in BNWs. Severely affected BNWs had lower amplicon sequence variant (ASV) richness compared to that of healthy individuals, and the microbial communities were significantly different between disease states with higher relative abundance of potentially pathogenic microbial taxa in mange-affected BNWs including Staphylococcus sciuri, Corynebacterium spp., Brevibacterium spp., Brachybacterium spp., and Pseudogymnascus spp. and Debaryomyces spp. CONCLUSION: This study represents the first investigation of microbial changes in association with sarcoptic mange in a marsupial host, as well as the first investigation of fungal microbial changes on the skin of any host suffering from sarcoptic mange. Our results are broadly consistent with bacterial microbiota changes observed in humans, pigs, canids, and Iberian ibex, suggesting the epidermal microbial impacts of mange may be generalisable across host species. We recommend that future studies investigating skin microbiota changes include both bacterial and fungal data to gain a more complete picture of the effects of sarcoptic mange.


Assuntos
Marsupiais , Micobioma , Escabiose , Animais , Cabras/parasitologia , Humanos , Marsupiais/parasitologia , RNA Ribossômico 16S/genética , Sarcoptes scabiei/genética , Escabiose/parasitologia , Suínos
6.
BMC Infect Dis ; 22(1): 658, 2022 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-35902827

RESUMO

BACKGROUND: Sarcoptes scabiei is one of the most impactful mammalian parasites. There has been much research on immunological and clinical pathological changes associated with S. scabiei parasitism across a range of host species. This rich body of literature is complex, and we seek to bring that complexity together in this study. We first (1) synthesise narrative reviews of immunopathological relationships to S. scabiei infection to construct overarching hypotheses; then (2) undertake a systematic meta-analysis of primary literature on immunological and clinical pathological changes; and lastly (3) contrast our findings from the meta-analysis to our synthesis from narrative reviews. METHODS: We synthesised 55 narrative reviews into two overarching hypotheses representing type I and type IV immune responses to S. scabiei infection. We then systematically extracted all literature reporting immunological variables, acute phase proteins, oxidant/antioxidant status, and erythrocytic, hepatological and nephrological changes, calculating 565 effect sizes between controls and sarcoptic mange affected groupings, refining (simplifying) hypotheses from narrative reviews. RESULTS: Immunological and clinical pathological parameters were most often studied in dogs (n = 12) and humans (n = 14). Combining immunological and clinical pathological information across mammalian species (n = 19) helped yield general insights into observed disease responses. This is evidenced by interspecific consensus in 27 immunological and clinical pathology variables (6/26 type I hypersensitivity, 3/20 type IV hypersensitivity, 6/10 oxidant/antioxidant status, 3/6 acute phase protein, 4/7 erythrocytic, and 5/10 hepatological/nephrological). CONCLUSIONS: Elevated IgE, eosinophils and mast cells in type I hypersensitivity response corresponded to what was described in narrative reviews. Results from type IV hypersensitivity response suggested typical antibody response, however cell-mediated response was less evident. Some consensus of acute phase protein response and shifted oxidant/antioxidant balance and slight evidence of anemia. We highlight the need for mange/scabies studies to more routinely compare immunological and clinical pathological changes against controls, and include collection of a more standardised suite of variables among studies.


Assuntos
Hipersensibilidade Tardia , Hipersensibilidade Imediata , Patologia Clínica , Escabiose , Proteínas de Fase Aguda , Animais , Antioxidantes , Cães , Humanos , Mamíferos , Oxidantes , Sarcoptes scabiei , Escabiose/parasitologia
7.
APMIS ; 130(11): 657-660, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-35851968

RESUMO

Denmark has experienced an increase in the proportion of invasive vancomycin-resistant Enterococcus faecium (VRE) since 2002 (e.g. <4% in 2015, 7.1% in 2017 and 12% in 2018). At Rigshospitalet, we employ active screening at departments with high prevalence or in case of outbreaks. This includes the collection of rectal swabs specifically for VRE screening. Our purpose was to describe the carrier prevalence of vancomycin-resistant enterococci among acute patients admitted to the Neurointensive Care Unit, Department of Neuroanaesthesiology, Rigshospitalet, Copenhagen, Denmark (NICU). Between April 2018 and January 2019, we investigated 99 consecutive rectal swabs from patients admitted to NICU. The primary outcome was prevalence of VRE carriage. The median age was 64 years (range 23-87) and gender was equally distributed (Female = 47, Male = 46). 26 (28%) had previously been admitted within 179 days and 67 patients (72%) had no hospital admissions within 180 days prior to the admission to NICU. Of the 93 rectal swabs, 2 (2%, 95% CI 0.26-7.55%) were positive for vanA and none were positive for vanB. Routine screening of all patients at admission may be effective in hospital settings with high VRE prevalence, whereas the benefit of screening for VRE in hospitals with a low prevalence may be restricted to specific patient populations.


Assuntos
Enterococcus faecium , Infecções por Bactérias Gram-Positivas , Enterococos Resistentes à Vancomicina , Adulto , Idoso , Idoso de 80 Anos ou mais , Antibacterianos/farmacologia , Feminino , Infecções por Bactérias Gram-Positivas/diagnóstico , Infecções por Bactérias Gram-Positivas/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Vancomicina , Resistência a Vancomicina , Adulto Jovem
8.
Int J Mol Sci ; 23(12)2022 Jun 09.
Artigo em Inglês | MEDLINE | ID: mdl-35742925

RESUMO

Single nucleotide polymorphisms (SNPs) in insulin and insulin receptor genes may influence the interaction between the two molecules, as may anti-insulin antibodies (IAs), commonly found in patients with type 1 diabetes mellitus (T1D) or type 2 diabetes mellitus (T2D) treated with exogenous insulin. We examined the impact of two SNPs in the human insulin gene (INS), rs3842752 and rs689, and two in the insulin receptor gene (INSR) rs2245649 and rs2229429, on disease susceptibility, glycaemic control, and IAs formation in 100 T1D patients and 101 T2D patients treated with insulin. 79 individuals without diabetes were typed as healthy controls. The minor alleles of rs3842752 and rs689 in INS protected against T1D (OR: 0.50, p = 0.01 and OR: 0.44; p = 0.002, respectively). The minor alleles of both rs2245649 and rs2229429 in INSR were risk factors for poor glycaemic control (HbA1c ≥ 80 mmol/mol) in T1D (OR: 5.35, p = 0.009 and OR: 3.10, p = 0.01, respectively). Surprisingly, the minor alleles of rs2245649 and rs2229429 in INSR associated strongly with the absence of IAs in T1D (OR = 0.28, p = 0.008 and OR = 0.30, p = 0.002, respectively). In conclusion, the minor alleles of the investigated INS SNPs protect against T1D, and the minor alleles of the investigated INSR SNPs are associated with poor glycaemic control and the absence of IAs in T1D.


Assuntos
Diabetes Mellitus Tipo 1 , Diabetes Mellitus Tipo 2 , Diabetes Mellitus Tipo 1/tratamento farmacológico , Diabetes Mellitus Tipo 1/genética , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/genética , Predisposição Genética para Doença , Controle Glicêmico , Humanos , Insulina/genética , Polimorfismo de Nucleotídeo Único , Receptor de Insulina/genética
9.
Neonatology ; 119(4): 443-454, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35545018

RESUMO

INTRODUCTION: Approximately, one in ten infants is born preterm or requires hospitalization at birth. These complications at birth have long-term consequences that can extend into childhood and adulthood. Timely detection of developmental delay through surveillance could enable tailored support for these babies and their families. However, the possibilities for follow-up are limited, especially in middle- and low-income countries, and the tools to do so are either not available or too expensive. A standardized and core set of outcomes for neonates, with feasible tools for evaluation and follow-up, could result in improving quality, enhance shared decision-making, and enable global benchmarking. METHODS: The International Consortium for Health Outcomes Measurement (ICHOM) convened an international working group, which was comprised of 14 health-care professionals (HCP) and 6 patient representatives in the field of neonatal care. An outcome set was developed using a three-round modified Delphi process, and it was endorsed through a patient representative-validation survey and an HCP survey. RESULTS: A literature review revealed 1,076 articles and 26 registries which were screened for meaningful outcomes, patient-reported outcome measures, clinical measures, and case mix variables. This resulted in a neonatal set with 21 core outcomes covering three domains (physical, social, and mental functioning) and 14 tools to assess these outcomes at three timepoints. DISCUSSION: This set can be implemented globally and it will allow comparison of outcomes across different settings and countries. The transparent consensus-driven development process which involved stakeholders and professionals from all over the world ensures global relevance.


Assuntos
Medidas de Resultados Relatados pelo Paciente , Qualidade de Vida , Adulto , Criança , Consenso , Hospitalização , Humanos , Lactente , Recém-Nascido , Avaliação de Resultados em Cuidados de Saúde/métodos
10.
J Plast Surg Hand Surg ; 56(6): 381-386, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-35294844

RESUMO

The majority of post-bariatric patients suffer from excess skin after weight loss, impairing physical, psychosocial and mental health. The abdomen is the most common location for excess skin, and abdominoplasty is the most commonly required reconstructive procedure. Abdominoplasty removes excess abdominal skin and attenuates related symptoms, but knowledge regarding mental health-related effects is scarce. Here, we aimed to evaluate the symptoms and severity of depression before and after abdominoplasty in post-bariatric patients and to analyse the relationships between depressive symptoms, quality of life (QoL) and experience of excess skin. We enrolled 110 former obese patients undergoing abdominoplasty. Three questionnaires evaluating the symptoms of depression (Beck Depression Inventory (BDI-II)), experience of excess skin (Sahlgrenska Excess Skin Questionnaire (SESQ)) and QoL (36-item Short-Form Health Survey (SF-36)) were completed preoperatively and 1 year postoperatively. After abdominoplasty, symptoms of depression (BDI sum score) significantly decreased (5.8 vs. 3.0, p = .037). Scores on three BDI questions improved (p < .05), and the SESQ score normalised (p < .001), while the SF-36 score was unaffected. The BDI sum score was moderately correlated with the SF-36 mental composite score (preoperatively, rs = -0.69; postoperatively, rs = -0.66) and fairly correlated with the SF-36 physical composite score (rs = 0.32, rs = 0.26). The correlation between the BDI sum and SESQ scores was poor preoperatively (rs = -0.106) and fair postoperatively (rs = 0.232). The results indicate that abdominoplasty may reduce symptoms of depression in post-bariatric patients. However, the procedure did not affect SF-36 scores. Further studies are required to validate these results.


Assuntos
Abdominoplastia , Cirurgia Bariátrica , Bariatria , Humanos , Estudos de Coortes , Depressão/etiologia , Depressão/diagnóstico , Qualidade de Vida/psicologia , Cirurgia Bariátrica/efeitos adversos , Inquéritos e Questionários
11.
BMJ Open ; 11(11): e051065, 2021 11 15.
Artigo em Inglês | MEDLINE | ID: mdl-34782342

RESUMO

OBJECTIVES: The COVID-19 pandemic has resulted in widespread morbidity and mortality with the consequences expected to be felt for many years. Significant variation exists in the care even of similar patients with COVID-19, including treatment practices within and between institutions. Outcome measures vary among clinical trials on the same therapies. Understanding which therapies are of most value is not possible unless consensus can be reached on which outcomes are most important to measure. Furthermore, consensus on the most important outcomes may enable patients to monitor and track their care, and may help providers to improve the care they offer through quality improvement. To develop a standardised minimum set of outcomes for clinical care, the International Consortium for Health Outcomes Measurement (ICHOM) assembled a working group (WG) of 28 volunteers, including health professionals, patients and patient representatives. DESIGN: A list of outcomes important to patients and professionals was generated from a systematic review of the published literature using the MEDLINE database, from review of outcomes being measured in ongoing clinical trials, from a survey distributed to patients and patient networks, and from previously published ICHOM standard sets in other disease areas. Using an online-modified Delphi process, the WG selected outcomes of greatest importance. RESULTS: The outcomes considered by the WG to be most important were selected and categorised into five domains: (1) functional status and quality of life, (2) mental functioning, (3) social functioning, (4) clinical outcomes and (5) symptoms. The WG identified demographic and clinical variables for use as case-mix risk adjusters. These included baseline demographics, clinical factors and treatment-related factors. CONCLUSION: Implementation of these consensus recommendations could help institutions to monitor, compare and improve the quality and delivery of care to patients with COVID-19. Their consistent definition and collection could also broaden the implementation of more patient-centric clinical outcomes research.


Assuntos
COVID-19 , Qualidade de Vida , Humanos , Avaliação de Resultados em Cuidados de Saúde , Pandemias , SARS-CoV-2
12.
eNeuro ; 8(5)2021.
Artigo em Inglês | MEDLINE | ID: mdl-34561238

RESUMO

Two novel short-interval intracortical inhibition (SICI) protocols, assessing SICI across a range of interstimulus intervals (ISIs) using either parallel threshold-tracking transcranial magnetic stimulation (TT-TMS) or automated conventional TMS (cTMS), were recently introduced. However, the test-retest reliability of these protocols has not been investigated, which is important if they are to be introduced in the clinic. SICI was recorded in 18 healthy subjects using TT-TMS (T-SICI) and cTMS (A-SICI). All subjects were examined at four identical sessions, i.e., morning and afternoon sessions on 2 d, 5-7 d apart. Both SICI protocols were performed twice at each session by the same observer. In one of the sessions, another observer performed additional examinations. Neither intraobserver nor interobserver measures of SICI differed significantly between examinations, except for T-SICI at ISI 3 ms (p = 0.00035) and A-SICI at ISI 2.5 ms (p = 0.0103). Intraday reliability was poor-to-good for A-SICI and moderate-to-good for T-SICI. Interday and interobserver reliabilities of T-SICI and A-SICI were moderate-to-good. Although between-subject variation constituted most of the total variation, SICI repeatability in an individual subject was poor. The two SICI protocols showed no considerable systematic bias across sessions and had a comparable test-retest reliability profile. Findings from the present study suggest that both SICI protocols may be reliably and reproducibly employed in research studies, but should be used with caution for individual decision-making in clinical settings. Studies exploring reliability in patient cohorts are warranted to investigate the clinical utility of these two SICI protocols.


Assuntos
Potencial Evocado Motor , Córtex Motor , Eletromiografia , Humanos , Inibição Neural , Reprodutibilidade dos Testes
13.
Eur J Neurol ; 28(9): 3030-3039, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34233060

RESUMO

BACKGROUND AND PURPOSE: Short-interval intracortical inhibition by threshold tracking (T-SICI) has been proposed as a diagnostic tool for amyotrophic lateral sclerosis (ALS) but has not been compared directly with conventional amplitude measurements (A-SICI). This study compared A-SICI and T-SICI for sensitivity and clinical usefulness as biomarkers for ALS. METHODS: In all, 104 consecutive patients referred with suspicion of ALS were prospectively included and were subsequently divided into 62 patients with motor neuron disease (MND) and 42 patient controls (ALS mimics) by clinical follow-up. T-SICI and A-SICI recorded in the first dorsal interosseus muscle (index test) were compared with recordings from 53 age-matched healthy controls. The reference standard was the Awaji criteria. Clinical scorings, conventional nerve conduction studies and electromyography were also performed on the patients. RESULTS: Motor neuron disease patients had significantly reduced T-SICI and A-SICI compared with the healthy and patient control groups, which were similar. Sensitivity and specificity for discriminating MND patients from patient controls were high (areas under the receiver operating characteristic curves 0.762 and 0.810 for T-SICI and A-SICI respectively at 1-3.5 ms). Paradoxically, T-SICI was most reduced in MND patients with the fewest upper motor neuron (UMN) signs (Spearman ρ = 0.565, p = 4.3 × 10-6 ). CONCLUSIONS: Amplitude-based measure of cortical inhibition and T-SICI are both sensitive measures for the detection of cortical involvement in MND patients and may help early diagnosis of ALS, with T-SICI most abnormal before UMN signs have developed. The gradation in T-SICI from pathological facilitation in patients with minimal UMN signs to inhibition in those with the most UMN signs may be due to progressive degeneration of the subset of UMNs experiencing facilitation.


Assuntos
Esclerose Lateral Amiotrófica , Doença dos Neurônios Motores , Esclerose Lateral Amiotrófica/diagnóstico , Diagnóstico Precoce , Eletromiografia , Potencial Evocado Motor , Humanos , Doença dos Neurônios Motores/diagnóstico , Estimulação Magnética Transcraniana
15.
J Immunol Methods ; 497: 113002, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-33640327

RESUMO

Highly sensitive assays for anti-drug antibodies (ADAs) are both a regulatory requirement and requisite for proper evaluation of the effects of immunogenicity on clinical efficacy and safety. Determination of ADA assay sensitivity depends on positive control antibodies to represent naturally occurring or treatment-induced ADA responses. An accurate determination of the proportion of drug-specific antibodies in these polyclonal positive control batches is critical for correct evaluation of assay sensitivity. Target purification of positive control antibodies is commonly applied but infers the risk to lose a proportion of the antibodies. This may lead to an incorrect estimate of the ADA assay sensitivity, especially if high-affinity antibodies are lost that may be representative of natural ADAs with clinical implication. The Surface Plasmon Resonance platform on the Biacore™ systems offers methods for real-time analysis of biomolecular interactions without introducing any modifications to the analysed material. Calibration-free concentration analysis (CFCA) is such an application for determination of the proportion of drug-specific antibodies, which allows direct determination of active antibody concentrations, as defined by the ligand, in a flow-based system. Here, we present a novel CFCA method for ADA quantification developed and validated using polyclonal positive control antibodies against endogenous human insulin, insulin degludec (Tresiba®) and turoctocog alfa (NovoEight®). We find that CFCA precisely and accurately measures concentrations of drug-specific IgG antibodies with a precision of ±10% and 90%-112% recovery of expected values of monoclonal positive control antibodies. Additionally, we have achieved a more accurate measure of the sensitivity of a cell-based bioassay for in vitro neutralising ADAs using the specific concentration determined with CFCA. Moreover, we effectively quantified serum anti-insulin antibodies in high-titre clinical samples from individuals with diabetes mellitus. This application extends the relevance of the CFCA technology to analysis of immunogenicity for accurate quantification of ADAs in both the polyclonal positive control and in clinical samples.


Assuntos
Anticorpos Neutralizantes/sangue , Coagulantes/imunologia , Diabetes Mellitus/imunologia , Fator VIII/imunologia , Hipoglicemiantes/imunologia , Imunoglobulina G/sangue , Técnicas Imunológicas , Insulina de Ação Prolongada/imunologia , Ressonância de Plasmônio de Superfície , Autoanticorpos/sangue , Biomarcadores/sangue , Diabetes Mellitus/sangue , Diabetes Mellitus/tratamento farmacológico , Humanos , Hipoglicemiantes/uso terapêutico , Insulina de Ação Prolongada/uso terapêutico , Valor Preditivo dos Testes , Reprodutibilidade dos Testes
16.
Neurophysiol Clin ; 51(2): 153-160, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33468370

RESUMO

OBJECTIVES: The transcranial magnetic stimulation (TMS) technique of threshold-tracking short-interval intracortical inhibition (T-SICI) has been proposed as a diagnostic tool for amyotrophic lateral sclerosis (ALS). Most of these studies have used a circular coil, whereas a figure-of-8 coil is usually recommended for paired-pulse TMS measurements. The aim of this study was to compare figure-of-8 and circular coils for T-SICI in the upper limb, with special attention to reproducibility, and the pain or discomfort experienced by the subjects. METHODS: Twenty healthy subjects (aged: 45.5 ±â€¯6.7, mean ±â€¯SD, 9 females, 11 males) underwent two examinations with each coil, in morning and afternoon sessions on the same day, with T-SICI measured at interstimulus intervals (ISIs) from 1-7 ms. After each examination the subjects rated degree of pain/discomfort from 0 to 10 using a numerical rating scale (NRS). RESULTS: Mean T-SICI was higher for the figure-of-8 than for the circular coil at ISI of 2 ms (p < 0.05) but did not differ at other ISIs. Intra-subject variability did not differ between coils, but mean inhibition from 1-3.5 ms was less variable between subjects with the figure-of-8 coil (SD 7.2% vs. 11.2% RMT, p < 0.05), and no such recordings were without inhibition (vs. 6 with the circular coil). The subjects experienced less pain/discomfort with the figure-of-8 coil (mean NRS: 1.9 ±â€¯1.28 vs 2.8 ±â€¯1.60, p < 0.005). DISCUSSION: The figure-of-8 coil may have better applicability in patients, due to the lower incidence of lack of inhibition in healthy subjects, and the lower experience of pain or discomfort.


Assuntos
Córtex Motor , Estimulação Magnética Transcraniana , Adulto , Potencial Evocado Motor , Feminino , Voluntários Saudáveis , Humanos , Masculino , Pessoa de Meia-Idade , Inibição Neural , Reprodutibilidade dos Testes
17.
Parasit Vectors ; 14(1): 18, 2021 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-33407820

RESUMO

BACKGROUND: Sarcoptic mange causes significant animal welfare and occasional conservation concerns for bare-nosed wombats (Vombatus ursinus) throughout their range. To date, in situ chemotherapeutic interventions have involved macrocytic lactones, but their short duration of action and need for frequent re-administration has limited treatment success. Fluralaner (Bravecto®; MSD Animal Health), a novel isoxazoline class ectoparasiticide, has several advantageous properties that may overcome such limitations. METHODS: Fluralaner was administered topically at 25 mg/kg (n = 5) and 85 mg/kg (n = 2) to healthy captive bare-nosed wombats. Safety was assessed over 12 weeks by clinical observation and monitoring of haematological and biochemical parameters. Fluralaner plasma pharmacokinetics were quantified using ultra-performance liquid chromatography and tandem mass spectrometry. Efficacy was evaluated through clinical assessment of response to treatment, including mange and body condition scoring, for 15 weeks after topical administration of 25 mg/kg fluralaner to sarcoptic mange-affected wild bare-nosed wombats (n = 3). Duration of action was determined through analysis of pharmacokinetic parameters and visual inspection of study subjects for ticks during the monitoring period. Methods for diluting fluralaner to enable 'pour-on' application were compared, and an economic and treatment effort analysis of fluralaner relative to moxidectin was undertaken. RESULTS: No deleterious health impacts were detected following fluralaner administration. Fluralaner was absorbed and remained quantifiable in plasma throughout the monitoring period. For the 25 mg/kg and 85 mg/kg treatment groups, the respective means for maximum recorded plasma concentrations (Cmax) were 6.2 and 16.4 ng/ml; for maximum recorded times to Cmax, 3.0 and 37.5 days; and for plasma elimination half-lives, 40.1 and 166.5 days. Clinical resolution of sarcoptic mange was observed in all study animals within 3-4 weeks of treatment, and all wombats remained tick-free for 15 weeks. A suitable product for diluting fluralaner into a 'pour-on' was found. Treatment costs were competitive, and predicted treatment effort was substantially lower relative to moxidectin. CONCLUSIONS: Fluralaner appears to be a safe and efficacious treatment for sarcoptic mange in the bare-nosed wombat, with a single dose lasting over 1-3 months. It has economic and treatment-effort-related advantages over moxidectin, the most commonly used alternative. We recommend a dose of 25 mg/kg fluralaner and, based on the conservative assumption that at least 50% of a dose makes dermal contact, Bravecto Spot-On for Large Dogs as the most appropriate formulation for adult bare-nosed wombats.


Assuntos
Isoxazóis , Marsupiais/parasitologia , Escabiose/tratamento farmacológico , Administração Tópica , Animais , Animais Selvagens/parasitologia , Conservação dos Recursos Naturais , Espécies em Perigo de Extinção , Inseticidas/administração & dosagem , Inseticidas/efeitos adversos , Inseticidas/farmacocinética , Inseticidas/uso terapêutico , Isoxazóis/administração & dosagem , Isoxazóis/efeitos adversos , Isoxazóis/farmacocinética , Isoxazóis/uso terapêutico , Sarcoptes scabiei/efeitos dos fármacos , Escabiose/veterinária , Tasmânia
18.
Eur J Dermatol ; 30(6): 723-729, 2020 Dec 01.
Artigo em Francês | MEDLINE | ID: mdl-33300880

RESUMO

BACKGROUND: Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease of the intertriginous areas. HS affects hair follicles causing perifollicular inflammation, resulting in the formation of nodules and painful abscesses. Intense pulsed light (IPL) uses selective photothermolysis to destroy the hair follicles. OBJECTIVES: To evaluate the effect of IPL hair removal as treatment for mild-to-moderate HS. MATERIALS & METHODS: We conducted a single-blinded, clinical randomized trial with patients with Hurley Stage I-II. Patients with symmetrical disease were randomized to monthly unilateral treatment of the axilla or groin. The contralateral side served as internal control. Concomitant treatment modalities for HS were not permitted throughout the study. Efficacy was assessed using Hidradenitis Suppurativa Clinical Response (HiSCR), modified Sartorius score (MSS) and patient-reported outcomes. RESULTS: A total of 17 patients completed the trial and were included in the analysis. HiSCR was not evaluated in patients without abscesses or inflammatory nodules pre-treatment. HiSCR was insignificantly different between the intervention side (8/12) and control side (4/10), P=0.467. There was, however, a significant reduction in regional MSS on the intervention side with a median score decreasing from 8.5 (IQR: 6.3-13.5) to 4.5 (IQR 1.8-8.0) post-treatment, P=0.006, and an insignificant score reduction in the control side from 6.0 (IQR: 4.5-8.3) to 5.0 (IQR: 2.5-9.0), post-treatment P=0.492. CONCLUSION: IPL hair removal resulted in a significant reduction on MSS on the treated area with no significant reduction on the control side. Our study suggests that IPL may be an effective treatment for mild-to-moderate HS.


Assuntos
Hidradenite Supurativa/terapia , Terapia de Luz Pulsada Intensa , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Método Simples-Cego
19.
Artigo em Inglês | MEDLINE | ID: mdl-33096677

RESUMO

Parkinson's disease (PD) is a neurodegenerative disease and a multidisciplinary approach to rehabilitation has been suggested as the best clinical practice. However, very few studies have investigated the long-term effects of a multidisciplinary rehabilitation approach, particularly regarding whether this can slow the progression of PD. The purpose was to investigate the short- and long-term effect of a 2-week multidisciplinary rehabilitation regimen on the PD-related decline in health-related quality of life (HRQOL), mobility, and muscle function. Individuals with PD (IPD) participated in a 2-week inpatient multidisciplinary rehabilitation regimen that focused on improving HRQOL, mobility, and muscle function. Data from the primary outcome: HRQOL (Parkinson's Disease Questionnaire 39, PDQ-39), secondary outcomes: handgrip strength, Timed-up and Go (TUG), Hospital Anxiety and Depression Scale (HADS), and Falls Efficacy Scale-International (FES-I) were compared at pre-visitation, before and after the 2-week regimen, and again at 4 and 10 months follow-up. In total, 224 patients with PD were included. There were short-term improvements in all outcomes. PDQ-39 was maintained at the same level as pre-visitation after 10 months follow-up. A 2-week multidisciplinary rehabilitation regimen improved short-term mobility, muscle function, and HRQOL in individuals with Parkinson's disease. HRQOL was maintained after 10 months demonstrating long-term effects.


Assuntos
Doenças Neurodegenerativas , Doença de Parkinson , Qualidade de Vida , Idoso , Estudos de Viabilidade , Força da Mão , Humanos , Doença de Parkinson/complicações , Doença de Parkinson/reabilitação , Estudos Prospectivos
20.
Mol Ecol Resour ; 19(2): 512-525, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30575257

RESUMO

In recent years, the availability of reduced representation library (RRL) methods has catalysed an expansion of genome-scale studies to characterize both model and non-model organisms. Most of these methods rely on the use of restriction enzymes to obtain DNA sequences at a genome-wide level. These approaches have been widely used to sequence thousands of markers across individuals for many organisms at a reasonable cost, revolutionizing the field of population genomics. However, there are still some limitations associated with these methods, in particular the high molecular weight DNA required as starting material, the reduced number of common loci among investigated samples, and the short length of the sequenced site-associated DNA. Here, we present MobiSeq, a RRL protocol exploiting simple laboratory techniques, that generates genomic data based on PCR targeted enrichment of transposable elements and the sequencing of the associated flanking region. We validate its performance across 103 DNA extracts derived from three mammalian species: grey wolf (Canis lupus), red deer complex (Cervus sp.) and brown rat (Rattus norvegicus). MobiSeq enables the sequencing of hundreds of thousands loci across the genome and performs SNP discovery with relatively low rates of clonality. Given the ease and flexibility of MobiSeq protocol, the method has the potential to be implemented for marker discovery and population genomics across a wide range of organisms-enabling the exploration of diverse evolutionary and conservation questions.


Assuntos
Elementos de DNA Transponíveis , Genética Populacional/métodos , Técnicas de Genotipagem/métodos , Polimorfismo de Nucleotídeo Único , Análise de Sequência de DNA/métodos , Animais , Cervos , Reação em Cadeia da Polimerase/métodos , Ratos , Lobos
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