Glioblastoma induces the recruitment and differentiation of dendritic-like "hybrid" neutrophils from skull bone marrow.

Tumor-associated neutrophil (TAN) effects on glioblastoma (GBM) biology remain under-characterized. We show here that neutrophils with dendritic features-including morphological complexity, expression of antigen presentation genes, and the ability to process exogenous peptide and stimulate major histocompatibility complex (MHC)II-dependent T cell activation-accumulate intratumorally and suppress tumor growth in vivo. Trajectory analysis of patient TAN scRNA-seq identifies this "hybrid" dendritic-neutrophil phenotype as a polarization state that is distinct from canonical cytotoxic TANs, and which differentiates from local precursors.

Student-run free clinics may enhance medical students' self-confidence in their clinical skills and preparedness for clerkships.

Introduction: Student-run free clinics (SRFCs) offer medical students a unique opportunity to develop their clinical, diagnostic, and social skills while providing care to medically underserved communities. This study aims to evaluate the value of SRFC involvement on students' self-reported confidence in various clinical domains and satisfaction with their medical education.

Methods: We conducted a single-center retrospective pre-post assessment at an urban academic institution among second- to fourth-year medical students.

Sociodemographic Characteristics of Patients Undergoing Surgery for Metastatic Disease of the Spine.

Introduction: Some patients, particularly those who are socioeconomically deprived, are diagnosed with primary and/or metastatic cancer only after presenting to the emergency department. Our objective was to determine sociodemographic characteristics of patients undergoing surgery for metastatic spine disease at our institution.

Methods: This retrospective case series included patients 18 years and older who presented to the emergency department with metastatic spine disease requiring surgery.

A Comparison of Prognostic Models to Facilitate Surgical Decision-Making for Patients With Spinal Metastatic Disease.

Study Design: Retrospective cohort.

Objective: Compare the performance of and provide cutoff values for commonly used prognostic models for spinal metastases, including Revised Tokuhashi, Tomita, Modified Bauer, New England Spinal Metastases Score (NESMS), and Skeletal Oncology Research Group model, at three- and six-month postoperative time points.

Summary Of Background Data: Surgery may be recommended for patients with spinal metastases causing fracture, instability, pain, and/or neurological compromise.

Sustained ICP Elevation Is a Driver of Spatial Memory Deficits After Intraventricular Hemorrhage and Leads to Activation of Distinct Microglial Signaling Pathways.

The mechanisms of cognitive decline after intraventricular hemorrhage (IVH) in some patients continue to be poorly understood. Multiple rodent models of intraventricular or subarachnoid hemorrhage have only shown mild or even no cognitive impairment on subsequent behavioral testing. In this study, we show that intraventricular hemorrhage only leads to a significant spatial memory deficit in the Morris water maze if it occurs in the setting of an elevated intracranial pressure (ICP).

[Complex application of indralin and ferrocin for the combined exposure on the organism of external gamma-irradiation and incorporation of 137Cs].

The summary of the study is that when using both medicines indraline doesn't influence the effectiveness of pherrocine in preventing of 137Cs accumulation in the main depositing/pooling organs. The radiation protecting medicine indraline used more intensive accumulation of radio nuclides in liver and kidney then a control. Accumulation rapidity and amount of 137Cs in liver and kidney depends on the time period between taking indraline and inflow of cesium into organism of animals.

[The bioavailability of zinc oxide nanoparticles. Study using methods of radionuclide indicators].

Zinc oxide nanoparticles labeled with 65Zn were administered once intragastrically to male Wistar rats. The distribution of radionuclide-marker (65Zn) was measured by gamma-spectrometer in tissue samples of animals the organs through 4 hours, 1, 3 and 5 days after administration, and in the wastes of animals through 1 since 5 days. The data obtained demonstrate for the first time the bioavailability of zinc trace element in the form of its oxide nanoparticles.

[On the problem of prophylaxis of late effects induced by internal irradiation using immunomodulators].

Using the experimental modeling of late effects induced by intake of radionuclides (131I, 238,239Pu, 90Sr) the attempt to investigate the possibility of protection using immune modulators was made. Co-polymer of 2-methil-5-vinilprilidin and N-vinilpirrholidon (sovidon), G immunoglobulin and interferon, Fc fragment of immunoglobulin and S. parathyphi B.

[The state of dog's metabolism after long interval after oxide tritium administration].

An attempt to evaluate the influence of tritium oxide on the metabolism by some indices of lipid metabolism (common lipids, beta-lipoproteins, cholesterin), protein metabolism (cholinesterasa) and carbohydrate metabolism (blood sugar) was made. It was established that the introduction into organism of tritium oxide in the quantities, which could form lethal and sublethal doses of internal radiation, provoked the main changes of values of mentioned indices of metabolism. The character of metabolism changes in the remote period allows us to judge about the development of sclerosis processes, which can be the result of radiation-stipulated acceleration of organism aging.

[Study of the effect of a food additive Medetopect on metabolic kinetics of transuranic radionuclides in animal body].

The effect of Medetopect, a food additive, on the metabolic kinetics of transuranics (239Pu and 241Am) has been studied experimentally in white mongrel rats following chronic intake by ingestion. The Medetopect application has been shown to be advantageous for reduction of the 239Pu and 241Am absorption from and content of the gastrointestinal tract of the animals.

[Evaluation of relative biological effectiveness of tritium oxide based on biochemical indices of blood in rats].

The influence of tritium oxide injected peritoneally of the range of activity of 5.5 MBq/g to 111 MBq/g versus gamma-radiation of 137Cs with decreasing dose rate in biochemical parameters of blood in rats was compared. It was shown that relative biological effectiveness of tritium oxide was higher than that for metabolism and it was equal to 1.

[Radionuclide biokinetics as a function of the age of experimental animals].

Behaviour of radionuclides with different distribution types in the organism of animals of various ages was studied. Depending on the age of experimental animals, an essential difference in biokinetic parameters such as coefficients of absorbtion from gastro-intestinal tract, distribution and retention levels in critical organs, retention and excretion rates of radionuclides was found.

[The relation of non-stochastic effects to the radiation dose of the human thyroid gland].

The paper is concerned with the reported data characterizing the dose-effect relationship for the main non-stochastic effects, namely for acute radiation and chronic thyroiditis and hypothyroidism that occur as a result of external and internal radiation of the thyroid. The threshold doses for acute thyroiditis, hypothyroidism, temporary thyroid hypofunction in adults and children exposed to 131I are estimated. The influence of modifying factors on the intensity and the times of thyroid lesion manifestations such as hyperactive thyroid is under consideration.

[The significance of modifying factors in evaluating the effect of radionuclides].

The authors provide the data obtained in experimental animals, pertaining to the influence of certain modifying factors on metabolism and biological effects induced by radioactive isotopes of iodine, by transuranium elements and beryllium. Out of all the modifying factors investigated, the form of the introduced compound and age turned out the most significant ones.