Publications by authors named "Lone Madsen"

Immunocompromised patients infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can have a longer duration of viral shedding and persistence of symptoms. The optimal treatment strategy for these patients remains to be established. This case describes a male in his late sixties with follicular lymphoma and persistent symptoms of infection with SARS-CoV-2 variant BA.

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Background And Aims: Extrahepatic comorbidities are common in alcohol-related liver disease (ALD). We examined associations between burden of comorbidities, alcohol, and smoking with low health-related quality of life (HRQoL) among patients with ALD.

Methods: Patients with ALD and matched comparators were identified among respondents of the Danish National Health Survey waves in 2010-2017.

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SARS-CoV-2 virus infects cells by engaging with ACE2 requiring protease TMPRSS2. ACE2 is highly expressed in kidneys. Predictors for severe disease are high age and male sex.

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Unlabelled: Coinfections with human pegivirus 1 (HPgV-1) are common in chronic hepatitis C virus (HCV) patients. However, little is known about whether HPgV-1 is affected by direct-acting antivirals during HCV treatment. Metagenomic analysis and reverse transcriptase-quantitative PCR (RT-qPCR) were performed on RNA from the plasma of 88 selected chronic HCV patients undergoing medical treatment.

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Article Synopsis
  • Recirculating aquaculture systems (RAS) use less water and produce less waste, but growing fish this way can lead to more diseases from germs.
  • Scientists studied rainbow trout raised in RAS to find out about different germs affecting fish health, finding a mix of known and new germs that can cause problems.
  • They created a special testing method to detect multiple germs at once, which could help predict and stop fish diseases that are causing high death rates.
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Objectives: This study aimed to compare antibody trajectories among individuals with SARS-CoV-2 hybrid and vaccine-induced immunity.

Methods: Danish adults receiving three doses of BTN162b2 or mRNA-1237 were included prior to first vaccination (Day 0). SARS-CoV-2 anti-spike IgG levels were assessed before each vaccine dose, at Day 90, Day 180, 28 days after 3rd vaccination (Day 251), Day 365, and prior to 4th vaccination (Day 535).

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Background: Alcohol-related liver disease is a preventable disease with high mortality. If individuals with alcohol-related liver disease were to be diagnosed earlier by screening and they reduced their alcohol consumption, lives lost to alcohol-related liver disease might be saved. A liver stiffness measurement (FibroScan©) is a key tool to screen for alcohol-related liver disease in asymptomatic individuals.

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Background: Within a year of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, vaccines inducing a robust humoral and cellular immune response were implemented worldwide. However, emergence of novel variants and waning vaccine-induced immunity led to implementation of additional vaccine boosters.

Methods: This prospective study evaluated the temporal profile of cellular and serological responses in a cohort of 639 SARS-CoV-2-vaccinated participants, of whom a large proportion experienced a SARS-CoV-2 infection.

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We developed a novel, stress-free blood sampling method for minipigs, allowing continuous cortisol monitoring over 24 h. Baseline cortisol levels exhibited both ultradian and diurnal rhythms. During nighttime, smaller ultradian rhythms overlaid a lower baseline cortisol, which increased in sleeping pigs before lights were turned on.

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Optimal sampling, preservation, and culturing of SARS-CoV-2 from COVID-19 patients are critical for successful recovery of virus isolates and to accurately estimate contagiousness of the patient. In this study, we investigated the influence of the type of sampling media, storage time, freezing conditions, sterile filtration, and combinations of these to determine the optimal pre-analytic conditions for virus recovery and estimation of infectious viral load in COVID-19 patients. Further, we investigated the viral shedding kinetics and mucosal antibody response in 38 COVID-19 hospitalized patients.

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Background: The prevalence of hepatitis C (HCV) among psychiatric patients is elevated compared to the background population in many studies, but the prevalence among Danish psychiatric patients is unknown. The aim of the study was to determine the HCV prevalence and the proportion of the psychiatric patient population that remains to be diagnosed and treated in a Danish setting.

Methods: During a 5-month period, patients attending the psychiatric emergency room in Vejle, Denmark, were offered point-of-care anti-HCV testing.

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HCV genotype 3b is a difficult-to-treat subtype, associated with accelerated progression of liver disease and resistance to antivirals. Moreover, its prevalence has significantly increased among persons who inject drugs posing a serious risk of transmission in the general population. Thus, more genetic information and antiviral testing systems are required to develop novel therapeutic options for this genotype 3 subtype.

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Background: In solid organ transplant (SOT) recipients, the humoral response following COVID-19 vaccination is reduced, as a result of their immunosuppressed treatment. In this study, we investigated antibody concentrations after booster vaccinations until the fifth dose, the latter by monovalent or bivalent BA1 or BA4/5 vaccines. In addition, we evaluated the efficacy of vaccination by recording breakthrough infections, hospitalizations, and deaths.

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Fabry disease (FD, OMIM 301500) is a rare X-linked inherited lysosomal storage disorder associated with reduced activities of α-galactosidase A (aGal, EC 3.2.1.

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SARS-CoV-2 Omicron quickly spread globally, also in regions with high vaccination coverage, emphasizing the importance of exploring the immunological requirements for protection against Omicron breakthrough infection. The test-negative matched case-control study (N = 964) characterized Omicron breakthrough infections in triple-vaccinated individuals from the ENFORCE cohort. Within 60 days before a PCR test spike-specific IgG levels were significantly lower in cases compared to controls (GMR [95% CI] for BA.

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Background: Increased knowledge of the causes of death will be essential to prevent premature death in alcohol-related liver disease. We examined cause-specific mortality, including death due to specific cancers, in the 15 years after diagnosis of alcohol-related liver disease.

Methods: We used nationwide health registries to identify patients (aged ≥18 years) with a first diagnosis of alcohol-related liver disease between Jan 1, 2002, and Dec 31, 2017, in Denmark and followed up patients for their underlying cause of death up to Dec 31, 2019.

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This work aims to generate the data needed to set epidemiological cut-off values for minimum inhibitory concentration (MIC) and disc-diffusion zone measurements of Vibrio anguillarum. A total of 261 unique isolates were tested, applying standard methods specifying incubation at 28°C for 24-28 h. Aggregated MIC distributions for a total of 247 isolates were determined in 9 laboratories for 11 agents.

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Background: Continuous evolution of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) outpaces monovalent vaccine cross-protection to new viral variants. Consequently, bivalent coronavirus disease 2019 (COVID-19) vaccines including Omicron antigens were developed. The contrasting immunogenicity of the bivalent vaccines and the impact of prior antigenic exposure on new immune imprinting remains to be clarified.

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Objectives: Immunocompromised patients infected with SARS-CoV-2 have been shown to shed replicable virus for a prolonged period of time, and the duration of isolation can therefore be difficult to estimate. The objective of this study was to evaluate the viral load dynamic in non-hospitalized immunocompromised patients infected with SARS-CoV-2 and treated with monoclonal antibodies (mAbs) or antivirals.

Methods: Oropharyngeal swabs for RT-PCR and viral culture were collected from 29 immunocompromised patients before treatment with mAbs or antivirals and at days 5 and 15 after treatment.

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Background: Older age and chronic disease are important risk factors for developing severe COVID-19. At population level, vaccine-induced immunity substantially reduces the risk of severe COVID-19 disease and hospitalization. However, the relative impact of humoral and cellular immunity on protection from breakthrough infection and severe disease is not fully understood.

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Physical enrichment can improve the welfare of captive fish. Previous research has shown that fish often show preference for enriched environments, which can also result in improvements in growth performance. However, effects of enrichment are not always positive and the design and extent of the enrichment needs to be carefully considered.

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Vibrio vulnificus is a zoonotic pathogen that can cause death by septicaemia in farmed fish (mainly eels) and humans. The zoonotic strains that have been isolated from diseased eels and humans after eel handling belong to clade E (or serovar E (SerE)), a clonal complex within the pathovar (pv.) piscis.

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Background & Aims: The function and structure of social relationships influence mortality in individuals within the general population. We compared aspects of social relationships in individuals with cirrhosis and a matched comparison cohort and studied their association with health-related quality of life (HRQoL) and mortality in cirrhosis.

Methods: Individuals with cirrhosis and comparators were identified among participants of the Danish National Health Surveys 2010-2017.

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