Accumulation of tissue-resident natural killer cells, innate lymphoid cells, and CD8 T cells towards the center of human lung tumors.

Lung cancer is a leading cause of cancer-related death worldwide. Despite recent advances in tissue immunology, little is known about the spatial distribution of tissue-resident lymphocyte subsets in lung tumors. Using high-parameter flow cytometry, we identified an accumulation of tissue-resident lymphocytes including tissue-resident NK (trNK) cells and CD8 tissue-resident memory T (T) cells toward the center of human non-small cell lung carcinomas (NSCLC).

Digital droplet PCR TERT promoter mutational screening in fine needle aspiration cytology of thyroid lesions: A highly specific technique for pre-operative identification of high-risk cases.

Background: Despite the advent of comprehensive molecular testing in surgical pathology, most centers still rely on the morphological assessment of fine-needle aspiration cytology (FNAC) to triage patients with thyroid nodules for surgery. Subsets of patients could benefit from the inclusion of molecular testing to increase the diagnostic and/or prognostic properties of the cytology analysis, including the assessment of TERT promoter mutations, an event coupled with thyroid malignancy, and poor prognosis.

Methods: In this prospective study, preoperative FNAC material from 65 cases was assessed for TERT promoter hotspot mutations C228T and C250T using the digital droplet PCR (ddPCR) technique on frozen pellets and re-evaluated postoperatively.

Semi-automated preparation of fine-needle aspiration samples for rapid on-site evaluation.

Rapid on-site evaluation (ROSE) significantly improves the diagnostic yield of fine needle aspiration (FNA) samples but critically depends on the skills and availability of cytopathologists. Here, we introduce a portable device for semi-automated sample preparation for ROSE. In a single platform, the device combines a smearing tool and a capillary-driven chamber for staining FNA samples.

N-Acetylcysteine protects the peritoneum from the injury induced by hypertonic dialysis solution.

Background: Oxidative stress has been implicated in the development of peritoneal damage. The aim of this study was to evaluate the effects of N-acetylcysteine (NAC) in a rat peritoneal infusion model.

Methods: Eighteen male Wistar rats were divided in 3 groups: (i) control group; (ii) HDS group, receiving peritoneal dialysis solution (PDS); and (iii) HDS+NAC group, receiving PDS and oral NAC.