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Increased Expression of ITGB 3 in CLL Patient leukemia Cells by Exposure to Cold Physical Plasma and Plasma-treated Medium.

Chronic lymphocytic leukemia (CLL) is the most prevalent hematological cancer, with various medical interventions. In the recent decade, cold physical plasma has become an interesting agent for future cancer therapy. The goal of this study was to see whether cold physical plasma or cold physical plasma-treated liquid (PTL) affected integrin beta 3 (ITGB3) expression, which is hypothesized to mediate an interaction between cancer stem cells and the bone marrow microenvironment, in CLL patients' blood cells. The metabolic activity, cell death pattern, lipid oxidation and ITGB3 gene expression of

Generation of plasma cells and CD27-IgD- B cells during hantavirus infection is associated with distinct pathological findings.

OBJECTIVE: Human hantavirus infections can cause haemorrhagic fever with renal syndrome (HFRS). The pathogenic mechanisms are not fully understood, nor if they affect the humoral immune system. The objective of this study was to investigate humoral immune responses to hantavirus infection and to correlate them to the typical features of HFRS: thrombocytopenia and transient kidney dysfunction. METHODS: We performed a comprehensive characterisation of longitudinal antiviral B-cell responses of 26 hantavirus patients and combined this with paired clinical data. In addition, we measured extracell

DNMTi/HDACi combined epigenetic targeted treatment induces reprogramming of myeloma cells in the direction of normal plasma cells.

BACKGROUND: Multiple myeloma (MM) is the second most common hematologic malignancy. Aberrant epigenetic modifications have been reported in MM and could be promising therapeutic targets. As response rates are overall limited but deep responses occur, it is important to identify those patients who could indeed benefit from epigenetic-targeted therapy. METHODS: Since HDACi and DNMTi combination have potential therapeutic value in MM, we aimed to build a GEP-based score that could be useful to design future epigenetic-targeted combination trials. In addition, we investigated the changes in GEP u

Dihydropyrimidine Dehydrogenase Genotype-Phenotype Correlations in Plasma and Peripheral Blood Mononuclear Cells.

The chemotherapeutic 5-fluorouracil (5-FU) is commonly used to treat solid tumors, especially colorectal cancer. Deleterious variants in DPYD, which encodes dihydropyrimidine dehydrogenase (DPD), are strongly associated with severe and potentially lethal 5-FU toxicity. Phenotypic assays for DPD function have been proposed as alternative or complementary approaches to identify DPD deficiencies with the rationale that they may capture unrecognized causes. These assays include the direct measurement of DPD activity in peripheral blood mononuclear cell (PBMC) lysates and measuring plasma metabolit

Not all plasma cells are made equal: well-hidden layers of heterogeneity.

Plasma cells (PCs) are the final stage of B cell development and sustain long-term humoral immunity by continuously secreting antibodies. Once considered a homogeneous population defined by a short-lived versus long-lived dichotomy, PCs are now recognised as highly heterogeneous. Recent advances have overturned several dogmas, revealing that long-lived plasma cells (LLPCs) can arise from diverse B cell precursors, and persist in tissues beyond the bone marrow. PC heterogeneity is shaped by intrinsic factors, including B cell origin, antigen affinity, BCR signalling strength and immunoglobulin …

Effects of transient plasma membrane disruptions on control and diabetic corneal cells.

Transient plasma membrane disruptions (TPMDs) are mechanically induced membrane injuries that initiate cellular repair and signaling responses. Although TPMDs have recently been identified in corneal cells, their physiological consequences and the effects of diabetes on TPMD-mediated responses remain poorly understood. The aim of this study was to examine the effects of TPMDs on calcium signaling, apoptosis, proliferation, and collagen expression in corneal epithelial and stromal cells and determined how these responses are influenced by diabetes. TPMDs were induced in cultured human corneal e

Plasma ceramide mediates the association of peripheral T cells with Alzheimer's disease.

INTRODUCTION: Neuroinflammation involving peripheral immune cells, particularly T lymphocytes, has been implicated in Alzheimer's disease (AD) progression. Metabolic dysregulation in sphingolipid pathways may influence neuroinflammatory processes in AD pathogenesis. However, the specific roles of T cell subsets and their interactions with metabolic pathways in AD pathogenesis remain unclear. OBJECTIVES: To determine the causal contributions of peripheral T cell subsets to AD risk and investigate whether blood metabolites mediate this association. METHODS: We integrated single-cell RNA sequen

Granulomatous Dermatitis With Dense Plasma Cells: A Diagnostic Clue for Cutaneous Leishmaniasis.

Cutaneous leishmaniasis presents with variable clinical and histopathological features, often complicating diagnosis. Acute lesions with high parasite burden are typically easier to identify, but chronic lesions with low organism load can be more challenging, particularly when leishmaniasis is not clinically suspected. Although granulomatous and lymphoplasmacytic infiltrates are well documented, our study underscores the diagnostic relevance of a plasma cell-rich, loosely organized granulomatous pattern. Observed in both Old and New World infections, this pattern may serve as a key histologic

Anaplastic Multiple Myeloma With a Novel Proliferation of Pleomorphic Binuclear Plasma Cells.

This study describes an unusual case of multiple myeloma that progressed to anaplastic multiple myeloma in the pleural fluid. The Wright-stained cytospin of the pleural fluid showed a predominant population of mononuclear plasma cells with pleomorphic nuclei, characterized by both small and large nuclei, which is typical of anaplastic multiple myeloma. However, there were also more binuclear plasma cells with pleomorphic nuclei. Morphometric analysis showed that the mean nuclear length was 1.9-fold and 2.3-fold higher in the large nuclei compared to the small nuclei for the mononuclear plasma …

Advances in estimating plasma cells in bone marrow: A comprehensive method review.

UNLABELLED: The quantitation of plasma cells in bone marrow (BM) is crucial for diagnosing and classifying plasma cell neoplasms. Various methods, including Romanowsky-stained BM aspirates (BMA), immunohistochemistry, flow cytometry, and radiological imaging, have been explored. However, challenges such as patchy infiltration and sample haemodilution can impact the reliability of BM plasma cell percentage estimates. Bone marrow plasma cell percentage varies across methods, with immunohistochemically stained biopsies consistently yielding higher values than Romanowsky-stained BMA or flow cytome…

Неопластические плазменные клетки с сопутствующими азурофилическими кристаллическими соединениями и телами Снаппера-Шнейда.

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… The bone marrow (BM) aspirate revealed the presence of 30% atypical plasma cells (PC), which contained numerous large cytoplasmic azurophilic granules that appeared as dots resembling intracellular microorganisms. … FIGURE 1 Panels A and B (x100 objective): Plasma cells with numerous large cytoplasmic granules and a few Snapper‐Schneid bodies (arrows). Panel C: Aberrant flow cytometry profile of plasma cells—CD38+/CD138+, loss of CD45, CD19, and CD56, expressing kappa immunoglobulin light chain. …

Increased radiosensitivity of melanoma cells through cold plasma pretreatment mediated by ICG.

Radiation therapy (RT) is the primary treatment for many cancers, but its effectiveness is reduced due to radioresistance and side effects. The study aims to investigate an emerging treatment for cancer, cold atmospheric plasma (CAP), as a selectable treatment between cancerous and healthy cells and its role in the occurrence of photodynamic therapy (PDT) utilizing indocyanine green (ICG) as a photosensitizer. We examined whether the efficiency of radiotherapy could be improved by combining CAP with ICG. The PDT effect induced by cold plasma irradiation and the radiosensitivity of ICG were inv

Inflammatory response in human lung cells stimulated with plasma from COPD patients.

BACKGROUND: Chronic obstructive pulmonary disease (COPD) is a condition resulting from a persistent inflammatory state in the airways even after smoking cessation. Intriguingly, the reasons behind this persistence of the inflammatory influx without smoking exposure have not been fully unraveled. We aimed to explore the hypothesis that systemic inflammation in COPD patients influences lung cell inflammatory response. METHODS: We cultured human lung fibroblast and human airway epithelial cell lines with plasma from COPD patients (four emphysematous-COPD, four asthma-COPD overlap, four chronic b

Transient Pleural Fluid Infiltration by Clonal Plasma Cells Associated with Pulmonary Tuberculosis.

Pleural effusion is a rare presentation of plasma cell myeloma, occurring in around 6% of patients during the course of their disease, most … l effusion as an initial presentation of multiple myeloma. Pleural fluid infiltration by monoclonal plasma cells in the absence of an underlying plasma cell myeloma was not reported before in the literature. Tuberculosis is a known cause of polyclonal gammaglobulinemia, however few case reports described the coexistence of monoclonal gammopathy of undetermined …

Direct observation of nystatin binding to the plasma membrane of living cells.

Nystatin is an antifungal polyene macrolide which is widely applied to treat yeast infections. Nystatin has also been used as a laboratory tool to inhibit endocytic processes in mammalian cells. The interaction of nystatin with model membranes has been studied thoroughly by various spectroscopic methods, making use of its weak fluorescence in the ultraviolet (UV). Studying its interaction with cells would require direct imaging, which, so far, required attachment of a fluorophore to nystatin. Using UV-sensitive microscopy, we show here how to visualize the interaction of nystatin with the plas

Plasma cells and lymphoid aggregates in sleeve gastrectomy specimens: Normal or gastritis?

Lymphoid follicles/aggregates in gastric biopsies have been traditionally linked to Helicobacter pylori gastritis, and less commonly to othe … group (the difference was statistically significant with a P-value of .008). The average number of plasma cells per high power field was 2.15 in the H pylori negative group, compared and average of 5.07 in the H pylori positive group (the difference was also statistically significant with a P-value <.001). Clinically, 10 of the 53 H pylori-negative patients h …

Localized accumulation of kappa restricted Russell body-containing plasma cells in tonsil.

An abnormal clonal plasma cell proliferation with Russell bodies is rare in chronic inflammatory reactions in adult patients. We describe the first case of light chain restricted Russell body accumulation within germinal centers of lymphoid follicles of the tonsil in a child. This should not be confused with a neoplastic process.

Bone Marrow Plasma Cells Modulate Local Myeloid-Lineage Differentiation via IL-10.

Bone marrow plasma cells have been reported to represent a major source of IL-10; however, the impact of plasma cell derived IL-10 in that tissue remains poorly understood. We confirm in this study that even in the absence of acute immune reactions, mature plasma cells represent the dominant IL-10+ cell population in the bone marrow, and identify myeloid-lineage cells as a main local target for plasma cell derived IL-10. Using Vert-X IL-10 transcriptional reporter mice, we found that more than 50% of all IL-10+ cells in bone marrow were CD138+ plasma cells, while other IL-10+ B lineage cells w…