Lee Ann

A complex of the NF-κB family member p52 and the transcription factor ETS1 is required for B cell germinal center responses to T cell-dependent immunization and for IgE-dependent allergic responses.

Posted By: Richie Hall August 16, 2025 The Noblesville football team hosted North Central Friday night for a scrimmage at Beaver Field. The Millers open their regular season next Friday, Aug. 22 at Mt. Vernon.

Abstract B-1 cells are innate-like immune cells abundant in serosal cavities with antibodies enriched in bacterial recognition, yet their

Posted By: The Reporter August 21, 2025 Bruce Barker, a true Purdue University legend known as the “Piano Man,” will perform live at MashCraft Fishers, 11069 Allisonville Road. This ticketed, 21-and-over concert will take place from 5 to 11 p.m. Saturday, Sept. 6. Attendees will be able to enjoy food, and a full bar will be available. Lawn chairs are recommended and no pets will be allowed. Click here to purchase your tickets now.

Posted By: The Reporter August 22, 2025 Paige Noble, Environmental Health Specialist with the Hamilton County Health Department, recently visited Carmel High School to provide food safety training to DECA students who run the Carmel Cafe & Market. The health department is always ready to support students as they learn safe practices for their student-run coffee shop.

Correction to: Nature https://doi.org/10.1038/s41586-025-09421-0 Published online 20 August 2025

Faculty members say they are worried about job security but also whether they should be introducing certain topics, like gender, in their class or with colleagues.

Osteoarthritis (OA), a degenerative joint disease primarily affecting the hips and knees, is characterized by multifactorial dysregulation of chondrocyte homeostasis and currently lacks curative treatment options. Intra-articular hyaluronic acid (HA) injections have clinically provided symptomatic relief for three decades; however, HA's rapid in vivo degradation by free radicals and hyaluronidases limits its efficacy. We hypothesized that adding niacinamide (vitamin B3) to linear HA hydrogels would provide ancillary anti-inflammatory and anti-catabolic properties, thereby improving HA-based viscosupplementation therapy. This preliminary preclinical mechanistic study investigated the functional effects of incorporating niacinamide into linear HA-based hydrogels using in vitro cellular models. Initially, Raw 264.7 macrophages and C28/I2 or SW1353 human chondrocytes were pre-treated with varying concentrations of HA/B3, with or without lipopolysaccharide (LPS) or interleukin-1β (IL-1β), respectively. Subsequently, pro-inflammatory and pro-catabolic markers were quantified biochemically. Results demonstrated that HA/B3 hydrogels exhibited enhanced functional stability compared to HA alone and possessed significant anti-inflammatory and anti-catabolic properties, without inducing cytotoxicity in either cell line. In Raw 264.7 macrophages, HA/B3 inhibited LPS-induced tumor necrosis factor-α (TNF-α) release and suppressed cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) protein expression. In vitro, HA/B3 hydrogels reduced IL-1β-induced IL-6 production in primary chondrocytes by 16% and suppressed PGE2 concentration in both macrophages and chondrocytes by 60%, effects superior to HA alone. Finally, a rat primary articular chondrocyte model suggested slight anti-hypertrophic effects of HA/B3 in vitro. Collectively, these findings suggest that HA/B3 hydrogels possess anti-arthritic potential, highlighting a novel strategy for next-generation viscosupplement systems.

Background: Hypothermic machine perfusion (HMP) has been associated with reduced delayed graft function compared with static cold storage (SCS). However, the molecular mechanisms underlying these differences during cold preservation remain incompletely understood. This study compared cold-storage-related biochemical and histological changes in kidneys preserved by HMP versus SCS using a Lewis rat model prior to transplantation. Methods: Following isolation, rat kidneys were flushed with cold saline (4 °C). Left kidneys were preserved by HMP at constant flow using Belzer’s machine perfusion solution (MPS) at 4 °C, while right kidneys were stored using SCS in University of Wisconsin solution at 4 °C. After four hours of preservation, kidneys were processed for biochemical and histological analysis. Fresh biopsies were evaluated for mitochondrial complex respiration. Western blotting was performed to assess expression of NDUFS3, a complex I subunit. Histological staining for nitrotyrosine and kidney injury markers was compared across groups. Results: Mitochondrial complex respiration did not differ significantly between the SCS and HMP groups. Western blot analysis demonstrated significantly increased NDUFS3 expression in HMP-preserved kidneys compared with SCS and control kidneys. Histological evaluation revealed elevated tubular staining of nitrotyrosine and kidney injury markers in SCS kidneys relative to controls, whereas HMP preservation markedly attenuated these increases. Conclusions: HMP mitigates cold-storage-induced oxidative stress and reduces expression of kidney injury markers after four hours of preservation. These molecular findings suggest a protective effect of HMP during cold preservation. Future studies with longer preservation times and transplantation models are needed to determine whether these improvements translate into enhanced post-transplant kidney function.

There is a scene in “ The Devil Wears Prada 2 ” where legendary fashion editor Miranda Priestly, played by Meryl Streep, is walking alone through Milan's fashion district.