An electrochemical genomagnetic assay for detection of SARS-CoV-2 and Influenza A viruses in saliva.

Viral respiratory infections represent a major threat to the population's health globally. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes COVID-19 disease and in some cases the symptoms can be confused with Influenza disease caused by the Influenza A viruses. A simple, fast, and selective assay capable of identifying the etiological agent and differentiating the diseases is essential to provide the correct clinical management to the patient.

Effects of a foot-ankle muscle strengthening program on pain and function in individuals with knee osteoarthritis: a randomized controlled trial.

Background: Foot-ankle exercises could improve pain and function of individuals with KOA and need to be tested.

Objective: To investigate whether an 8-week foot-ankle muscle strengthening program is effective for individuals with KOA to reduce pain and improve function.

Methods: In this randomized controlled trial, individuals diagnosed with clinical and radiographic KOA were randomized into the intervention (supervised foot-ankle strengthening exercise program three times a week for 8 weeks) or control (usual care and recommendations of the healthcare team) group.

Do the oxidative stress biomarkers predict COVID-19 outcome? An in-hospital cohort study.

In SARSCoV-2 infections, excessive activation of the immune system dramatically elevates reactive oxygen species levels, harms cell structures, and directly increases disease severity and mortality. We aimed to evaluate whether plasma oxidative stress biomarker levels could predict mortality in adults admitted with Coronavirus Disease 2019 (COVID-19), considering potential confounders. We conducted a cohort study of 115 adults (62.

Molecular test for COVID-19 diagnosis based on a colorimetric genomagnetic assay.

The world is in a long pandemic period caused by the SARS-CoV-2 virus and massive diagnostic tests to assist efforts to control the spread of the disease and also to avoid new coronavirus variants are still needed. Herein, we propose a simple and accurate saliva-based colorimetric test for the diagnosis of COVID-19. Magnetic beads (MBs) modified with a sequence of single-strand DNA (ssDNA) complementary to the N gene of the SARS-CoV-2 RNA were developed and used for magnetic capture and separation from a complex saliva sample.

COVID-19 vaccination and case fatality rates: a case report in a Brazilian municipality.

Vaccination campaigns played a crucial role in reducing the incidence of COVID-19. However, a scant number of studies evaluated the impact of vaccination on case fatality rates (CFRs), including in Brazil. Our study aimed to compare CFRs according to vaccination status among subjects living in Arapongas (Paraná State, Brazil), considering the age composition of the population.

Early passive mobilization increases vascular reactivity response in critical patients with sepsis: a quasi-experimental study.

Objective: To investigate the influence of a passive mobilization session on endothelial function in patients with sepsis.

Methods: This was a quasi-experimental double-blind and single-arm study with a pre- and postintervention design. Twenty-five patients with a diagnosis of sepsis who were hospitalized in the intensive care unit were included.

Burden and psychological symptoms on informal caregivers of the elderly in the COVID-19 pandemic.

Objective: To evaluate the burden and psychological symptoms of informal caregivers of the elderly during the COVID-19 pandemic.

Method: Cross-sectional study with 50 caregivers from the Gerontology Outpatient Clinic in the interior of São Paulo, evaluated in 2021 via teleconsultation by the Hospital Anxiety and Depression Scale and the Zarit-Brief Burden Interview. Poisson's multivariate regression was applied to the two instruments scores according to the set of characteristics of the participants.

Agreement between fragility assessment instruments for older adults registered in primary health care.

Objective: To assess the level of agreement between the Subjective Frailty Assessment (SFA) and Clinical Functional Vulnerability Index (CFVI-20) for the diagnosis of frailty in older adults.

Methods: A descriptive, comparative, cross-sectional study was conducted in 2018/2019 with 492 older adults at nine Family Health Strategy units in the city of Três Lagoas, state of Mato Grosso do Sul, Brazil. Frailty was assessed using the SFA and CFVI-20 in addition to a structured interview.

Vitamin D deficiency predicts 30-day hospital mortality of adults with COVID-19.

Background & Aims: Several studies have shown conflicting results for the relationship between vitamin D deficiency and COVID-19 outcomes. Here, we aimed to evaluate whether plasma 25(OH)D levels predict mortality in adults admitted with COVID-19, considering potential confounders.

Methods: We conducted a retrospective cohort study that included 115 adults (age 62.

Retraction notice to "Use of ivermectin in the treatment of Covid-19: A pilot trial" [Toxicol. Rep. 8 (2021) 505-510].

[This retracts the article DOI: 10.1016/j.toxrep.

Is the angular onset of pain during arm elevation associated to functioning in individuals with rotator cuff related shoulder pain?

Background: Rotator cuff related shoulder pain (RCRSP) is the main diagnosis for shoulder pain. A painful arc during active arm elevation is a common finding in RCRSP. The angular onset of pain during arm elevation may play an important role on functioning of the upper extremities.

The impact of COVID-19 vaccination on case fatality rates in a city in Southern Brazil.

Background: Recent studies have established that vaccination plays a significant role in reducing COVID-19-related deaths. Here, we investigated differences in COVID-19 case fatality rates (CFRs) among vaccinated and unvaccinated populations, and analyzed whether the age composition of confirmed cases has a significant effect on the variations in the observed CFRs across these groups.

Methods: The study considered 59,853 confirmed cases and 1,687 deaths from COVID-19, reported between January 1 to October 20, 2021, by the Health Department of Londrina, a city in Southern Brazil.

25-hydroxyvitamin D in older adults: Which factors really matter?

Background And Objectives: This study investigated the interaction between a set of factors commonly associated with vitamin D production and nutritional intake and serum 25(OH)D levels among older adults.

Methods: Cross-sectional study on 346 adults over 60 years. Serum 25(OH)D levels were measured following routine biochemical laboratory protocols.

Apolipoprotein E ε4 allele impairs cortical activity in healthy aging and Alzheimer's disease.

Aim: To investigate the influence of apolipoprotein E (APOE) genotype on cortical activity, using the event-related potential P300 in healthy older adults and individuals with Alzheimer's disease (AD).

Methods: A cohort of 37 healthy older adults and 48 with AD participated in this study and completed an auditory oddball task using electroencephalographic equipment with 21 channels (10-20 system). APOE genotyping was obtained by real-time PCR.

COVID-19 diagnosis by SARS-CoV-2 Spike protein detection in saliva using an ultrasensitive magneto-assay based on disposable electrochemical sensor.

The outbreak of the COVID-19 pandemic, caused by Severe Acute Respiratory Syndrome of Coronavirus 2 (SARS-CoV-2), has fueled the search for diagnostic tests aiming at the control and reduction of the viral transmission. The main technique used for diagnosing the Coronavirus disease (COVID-19) is the reverse transcription-polymerase chain reaction (RT-PCR) technique. However, considering the high number of cases and the underlying limitations of the RT-PCR technique, especially with regard to accessibility and cost of the test, one does not need to overemphasize the need to develop new and less expensive testing techniques that can aid the early diagnosis of the disease.

Phenylalanine and COVID-19: Tracking disease severity markers.

Background: Although there are several severity predictors for COVID-19, none are specific. Serum levels of phenylalanine were recently associated with increased inflammation, higher SOFA scores, ICU admission, and mortality rates among non-COVID-19 patients. Here, we investigated the relationship between phenylalanine and inflammatory markers in adults with COVID-19.

Frailty state transitions among non-frail and vulnerable older adults: Does mobility performance really matter?

We assessed the predictors of becoming frail between non-frail and vulnerable community-dwelling older adults in a retrospective cohort study with adults (n=346) aged 60 years or older recruited from primary healthcare centers. Edmonton Frailty Scale assessed frailty status, and Kaplan-Meier estimated the frailty-free probability and compared it between groups. Cox regression models explored predictors of becoming frail.

Meteorological parameters and cases of COVID-19 in Brazilian cities: an observational study.

Meteorological parameters modulate transmission of the SARS-Cov-2 virus, the causative agent related to coronavirus disease-2019 (COVID-19) development. However, findings across the globe have been inconsistent attributed to several confounding factors. The aim of the present study was to investigate the relationship between reported meteorological parameters from July 1 to October 31, 2020, and the number of confirmed COVID-19 cases in 4 Brazilian cities: São Paulo, the largest city with the highest number of cases in Brazil, and the cities with greater number of cases in the state of Parana during the study period (Curitiba, Londrina and Maringa).

Plasma 25-hydroxyvitamin D levels, quality of life, inflammation and depression in older adults: Are they related?

Background And Objectives: This study aimed to determine whether there is an association between inflammation and depression taking into account the effect of several confounders, but specially plasma 25-hydroxyvitamin D (25[OH]D) levels.

Material And Methods: A cross-sectional study was conducted on adults (n = 346) aged 60 years or older recruited from primary healthcare centres. Depression was assessed by the Geriatric Depression Scale (GDS), while plasma 25(OH)D and inflammatory cytokines were measured following routine biochemical laboratory protocols.

Elevations in Liver Transaminases in COVID-19: (How) Are They Related?

Liver involvement in COVID-19 is not yet well-understood, but elevations in liver transaminases have been described to occur in 14-53% of the cases and are more frequently seen in severe disease. This cross-sectional study explored the relationship between the elevations in liver transaminases and inflammatory parameters in 209 adults with COVID-19. Demographic and clinical data, serum levels of inflammatory cytokines and liver aminotransferases were analyzed.

Comorbidities predict 30-day hospital mortality of older adults with COVID-19.

We evaluated whether comorbidities predict disease severity and mortality in a cohort of 147 older adults with COVID-19. Patients were divided into three groups according to the Charlson Comorbidity Index (CCI) score. Groups 2 (CCI 4 - 5) and 3 (CCI ≥ 6) had higher 30-day mortality rate as compared to group 1 (CCI ≤ 3).

Pain-related fear phenotypes are associated with function of the upper limbs in individuals with shoulder pain.

Objective: To identify and describe phenotypes related to kinesiophobia, fear-avoidance, and pain catastrophizing, and determine clinical and demographic characteristics related to each phenotype as a function of self-reported function of the upper limbs in individuals with shoulder pain.

Methods: One hundred and seventy-seven individuals with shoulder pain participated in this study. Tampa Scale of Kinesiophobia, Fear-Avoidance Beliefs Questionnaire, Pain Catastrophizing Scale, Disabilities of the Arm, Shoulder and Hand Questionnaire (DASH), Numerical Pain of Rating Scale, and the angular onset of pain during the elevation of the arm were measured in all participants.

Associations between inflammatory markers and muscle strength in older adults according to the presence or absence of obesity.

Background: We investigated the association between inflammatory markers and muscle strength in older adults according to the presence or absence of obesity. Dynapenia is the age-related decline in muscle strength and results in negative outcomes to older adults. Accordingly, obesity is more prevalent throughout aging and is associated with comorbidities, such as type 2 diabetes, dyslipidemia and cardiovascular diseases.

IL-6 and IL-10 are associated with disease severity and higher comorbidity in adults with COVID-19.

Aim: COVID-19 pandemic has caused extensive burden on public life and health care worldwide. This study aimed to assess circulating levels of inflammatory cytokines in adult patients who were hospitalized with COVID-19 and stratified according to age (older or younger than 65 years) aiming to explore associations between these markers of inflammation and comorbidities.

Methods: This was a cross-sectional study of 142 COVID-19 patients consecutively admitted to the University Hospital of the Federal University of São Carlos, from July to October 2020.