Genetically encoded mechano-sensors with versatile readouts and compact size.

Mechanical forces are critical for virtually all fundamental biological processes, yet quantification of mechanical forces at the molecular scale remains challenging. Here, we present a new strategy using calibrated coiled-coils as genetically encoded, compact, tunable, and modular mechano-sensors to substantially simplify force measurement , via diverse readouts (luminescence, fluorescence and analytical biochemistry) and instrumentation readily available in biology labs. We demonstrate the broad applicability and ease-of-use of these coiled-coil mechano-sensors by measuring forces during cytokinesis (formin Cdc12) and endocytosis (epsin Ent1) in yeast, force distributions in nematode axons (β-spectrin UNC-70), and forces transmitted to the nucleus (mini-nesprin-2G) and within focal adhesions (vinculin) in mammalian cells.

Colistin antibacterial activity, clinical effectiveness, and mechanisms of intrinsic and acquired resistance.

Following a period of disuse owing to the emergence of multidrug-resistant Gram-negative bacteria, colistin has regained global attention as an antibiotic of last resort. The resurgence in its utilization has led to a concurrent increase in acquired resistance, presenting a significant challenge in clinical treatment. Predominantly, resistance mechanisms involve alterations in the lipid A component of the lipopolysaccharide (LPS) structure.

Incidence and survival of European adolescents and young adults diagnosed with sarcomas: EUROCARE-6 results.

Background: Epidemiological data for sarcoma in adolescents and young adults (AYAs) and across age groups are limited. We aim to: 1) update sarcoma incidence, survival, and changes over time in European AYAs; 2) provide an updated comparison of sarcoma survival in AYAs versus children and mature adults.

Methods: We calculated crude incidence rates (IR) per 100,000 European population per year from 2006 to 2013.

Biomonitoring potential of trace metal accumulation and bioavailability in coral skeletons and reef sediments of Persian Gulf: A comparative study.

Nayband Marine National Park in the northern Persian Gulf is an important ecological areas, significantly impacted by industrial activites that poses risk of trace metal pollution to living organisms. In this study, we investigated the bioaccumulation of trace metals in scleractinian corals using annual growth bands and biota-sediment accumulation factor to assess their potential as biomonitoring organisms. Furthermore, to assess the sediment quality, sediment pollution indices and international guidelines was employed.

Evaluating the Cavitary Lung Lesions on CT Scan of COVID-19 Patients: A Retrospective Study.

Background: It has been shown that cavitary lesions on CT scans of patients with COVID-19 may be related to their clinical symptoms and mortality rate.

Materials And Methods: The study population included patients diagnosed with COVID-19 based on RT-PCR results from throat samples or typical clinical and chest CT scan findings who were hospitalized at Sina Hospital in Tehran in 2020 and underwent chest CT scans. Chest CT scans were examined for the severity of pulmonary opacities and the presence, number, size, wall thickness, and distribution of cavitary lung lesions.