Crosstalk Between Iron and Sulfur Homeostasis Networks in .

The widespread deficiency of iron (Fe) and sulfur (S) is becoming a global concern. The underlying mechanisms regulating Fe and S sensing and signaling have not been well understood. We investigated the crosstalk between Fe and S using mutants impaired in Fe homeostasis, sulfate assimilation, and glutathione (GSH) biosynthesis.

Incidence of SARS-CoV-2 re-infection in anti-nucleocapsid IgG-positive healthcare workers: a prospective cohort study.

Unlabelled: BACKGROUND : Since the pandemic of SARS-CoV-2 began, our understanding of the pathogenesis and immune responses to this virus has continued to evolve. It has been shown that this infection produces natural detectable immune responses in many cases. However, the duration and durability of immunity and its effect on the severity of the illness are still under investigation.

Identifying higher risk subgroups of health care workers for priority vaccination against COVID-19.

Background: Health care workers (HCWs) are exposed to high risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection due to close contact with infected patients in hospital. The objective of this study was to estimate the seroprevalence and to identify the exposure risk of various subgroups among HCWs to prioritize them for early vaccination.

Methods: This was a multicentre cross-sectional study conducted between 15 and 29 June 2020.

SARS-CoV-2: big seroprevalence data from Pakistan-is herd immunity at hand?

Purpose: Seroprevalence surveys from different countries have reported SARS CoV-2 antibodies below 20% even in the most adversely affected areas and herd immunity cannot be predicted till more than half of the population gets the disease. The purpose of this survey was to estimate the magnitude of community-based spread of the infection, associated immunity, and the future prospects and proximity to a 'herd community'.

Methods: The study was undertaken as a cluster randomized, cross-sectional countrywide survey.

Antimicrobial Prophylaxis in Clean Pediatric Surgical Procedures: A Necessity or Redundancy?

Background The clinical utility of antimicrobial prophylaxis in clean pediatric surgical cases remains enigmatic. The present study aims to evaluate the prevalence of surgical site infections in instances where antibiotic prophylaxis is not employed prior to clean pediatric surgical procedures. Methods A retrospective cross-sectional study that included data of all pediatric clean surgical procedures from January 2018 till January 2020 was conducted.

Sulfur metabolic engineering enhances cadmium stress tolerance and root to shoot iron translocation in Brassica napus L.

Serine acetyltransferase (SAT) (EC 2.3.1.

Sulfate-Induced Stomata Closure Requires the Canonical ABA Signal Transduction Machinery.

Phytohormone abscisic acid (ABA) is the canonical trigger for stomatal closure upon abiotic stresses like drought. Soil-drying is known to facilitate root-to-shoot transport of sulfate. Remarkably, sulfate and sulfide-a downstream product of sulfate assimilation-have been independently shown to promote stomatal closure.

Sulfate is Incorporated into Cysteine to Trigger ABA Production and Stomatal Closure.

Plants close stomata when root water availability becomes limiting. Recent studies have demonstrated that soil-drying induces root-to-shoot sulfate transport via the xylem and that sulfate closes stomata. Here we provide evidence for a physiologically relevant signaling pathway that underlies sulfate-induced stomatal closure in Arabidopsis ().