Bone-Induced Her2 Promotes Secondary Metastasis in HR+/Her2- Breast Cancer.

Bone metastases can disseminate to secondary sites and promote breast cancer progression creating additional clinical challenges. The mechanisms contributing to secondary metastasis are barely understood. Here, we evaluate the prediction power of Her2-expressing (Her2E) circulating tumor cells (CTCs) after analyzing over 13,000 CTCs from a cohort of 137 metastatic breast cancer (MBC) patients with initial HR+/Her2- status and employ preclinical models of bone metastasis (BM) to validate the role of Her2E CTCs in multi-organ metastases.

New York City's Community-Based Organizations and the COVID-19 Pandemic: A Descriptive Analysis of Local Organizations' Response Efforts and Their Role During Public Health Crises.

Community-based organizations (CBOs) are on the frontlines offering resources and support to residents during times of distress. Through a community-academic partnership, an interdisciplinary team developed, collected, and analyzed 91 surveys from social services providers across New York City assessing the impact of the COVID-19 pandemic on their organizations' operations. The majority (93%) of these organizations stayed open during the pandemic but had to shift the services they offered to meet new needs.

Methyltransferases of gentamicin biosynthesis.

Gentamicin C complex from remains a globally important antibiotic, and there is revived interest in the semisynthesis of analogs that might show improved therapeutic properties. The complex consists of five components differing in their methylation pattern at one or more sites in the molecule. We show here, using specific gene deletion and chemical complementation, that the gentamicin pathway up to the branch point is defined by the selectivity of the methyltransferases GenN, GenD1, and GenK.

[The effect of chronic x-ray radiation at low doses on the gamma-glutamyl transpeptidase activity in rat organs and tissues].

Effect of chronic low dose X-ray irradiation (total doses of 2.58, 5.16, 6.

[The glutathione content and glutathione-S-transferase activity in the organs and blood of rats following chronic irradiation at low doses].

The effect of chronic low dose-rate irradiation with X-rays up to total doses of 2.58, 5.16, 6.