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Диабет мелитус в множестве миэломы и связанных с ним расстройства плазменных клеток: обзор риска, прогноза и результатов.

Существует четкая связь между типом 2 сахарный диабет и общий риск заболевания раком. Однако исследования, посвященные оценке типа 2 Риск ДМ и множественной миэломы (ММ) ограничен, и связь менее ясна. Понимание воздействия давнишнего типа 2 Важнейшее значение имеет DM о системах органов и симптоматологии у пациентов с последующим диагнозом MM, а также потенциальные перекликающиеся токсичные вещества, связанные с лечением MM. В настоящем обзоре резюмируется роль вида 2 ДМ о рисках и результатах ММ и изучает различные механизмы, лежащие в основе этих ассоциаций. Более глубокое понимание этой асс

Unique B- and plasma cell signature differentiates hidradenitis suppurativa from psoriasis and atopic dermatitis.

INTRODUCTION: Hidradenitis suppurativa (HS), psoriasis (PsO), and atopic dermatitis (AD) have unique disease pathogenesis and distinct patho … that HS pathogenesis is more heterogeneous than AD or PsO and highlight an important role of B and plasma cells in HS inflammation.

Phenotypic plasticity in plasma cell myeloma: a CD138-negative case with a rare BRAF G469R mutation.

CD138-negative plasma cell myeloma harboring a BRAF G469R mutation is described in a 76-year-old male presenting with multiple osteolytic lesions. Histologically, the lesion exhibited epithelioid to plasmacytoid morphology with prominent mitotic activity and vascular-like spaces. Immunophenotyping demonstrated strong vimentin and CD31 expression but absence of CD138 and other endothelial markers. Light-chain in situ hybridization confirmed a clonal κ-restricted plasma cell population. Bone marrow examination revealed near-complete replacement by atypical plasma cells, retaining CD138 negativit…

Cocaine-Induced Plasma Cell Dermatomucositis (CI-PCDM): Clinical and Histopathological Features of a UK Cohort.

BACKGROUND: Cocaine-induced plasma cell dermatomucositis (CI-PCDM) is an emerging clinical entity involving ulcerated, nodular lesions of the nasolabial region. While it shares some clinical features with other cocaine-induced midline disorders, CI-PCDM is increasingly recognized as a distinct inflammatory process characterized by specific histological patterns. METHODS: This retrospective, multi-center case series identified six patients from two UK pathology archives. Data were retrieved from electronic records and medical photography, while histopathology and immunohistochemistry reports w

Diffuse skeletal and bone marrow metastases mimicking plasma cell dyscrasia in advanced lung adenocarcinoma.

A man in his late 40s presented with progressive chest pain, cough and dyspnoea. Imaging revealed left lung collapse with pleural involvement. Thoracoscopic pleural biopsy confirmed pulmonary adenocarcinoma by immunohistochemistry. Staging fluorodeoxyglucose positron emission tomography-CT demonstrated nodal disease and unexpectedly diffuse marrow uptake with widespread lytic lesions involving the axial and appendicular skeleton, raising concern for a haematological malignancy. Serum protein electrophoresis revealed no monoclonal band, arguing against plasma cell dyscrasia. CT of the brain dem

Longitudinal plasma and urinary SP-D and sRAGE during BEP chemotherapy in germ cell tumours.

BACKGROUND: Bleomycin-induced pulmonary toxicity remains a significant complication of curative BEP chemotherapy for germ cell tumours, and no validated circulating biomarker enabling individual risk prediction or early detection of lung damage is currently available. METHODS: This exploratory two-centre cohort study enrolled 60 patients with germ cell tumours receiving therapeutic three or four cycles of bleomycin, etoposide, and cisplatin (BEP) chemotherapy. A separate cohort of 18 patients with germ cell tumours receiving adjuvant single-cycle BEP was analysed independently. Plasma and uri

Plasma extracellular vesicles promote follicular T helper cell expansion in primary Sjögren's syndrome.

Primary Sjögren's syndrome (pSS) is a prevalent autoimmune disease characterized by exocrine gland dysfunction, with hallmarks of B cell and T cell overactivation, whose underlying mechanism remains largely unknown. Herein, we show that pSS plasma contained more extracellular vesicles (EVs) than HC plasma, which promoted CD4+ T cell activation, Th1, and follicular T helper cell (Tfh) differentiation, aggravating pSS immunopathology. Notably, pSS plasma EVs were enriched with miR-501-3p, mediating CD4+ T cell activation and Tfh cell differentiation. Furthermore, miR-501-3p downregulated special

Evaluation of treatment for diffuse large B-cell lymphoma using plasma D-dimer levels.

It has been documented that D-dimer levels have potential utility as a measure of tumor activity in diffuse large B-cell lymphoma (DLBCL), however whether it can be used as a predictive marker of treatment outcome has not been established. This study means to retrospectively evaluate the role of D-dimer in prediction of treatment efficacy in patients with DLBCL. 151 patients with newly diagnosed DLBCL were enrolled. Blood samples were taken from those patients during the initial visit to our hospital and again after two cycles of chemotherapy to measure D-dimer levels. The link between plasma

Chronic Antibody-Mediated Rejection and Plasma Cell ER Stress: Opportunities and Challenges with Calcineurin Inhibitors.

Chronic alloantibody-mediated rejection (cAMR) remains a major challenge in transplant immunology, with no FDA-approved targeted therapies currently available. Despite advancements in cellular immunosuppression, effective strategies to mitigate alloantibody-mediated rejection are still lacking. This review provides a comprehensive overview of transplant rejection with a particular focus on the pathophysiology and therapeutic landscape of cAMR. We highlight the role of plasma cell-driven alloantibody production and its susceptibility to endoplasmic reticulum (ER) stress, a pathway with potentia

Imaging in plasma cell disorders-consensus recommendations of the Asian myeloma network bone imaging workgroup.

The role of imaging in accurate classification and management of plasma cell disorders is substantial with the increasing evidence in the ability of cross-sectional imaging to identify disease related manifestations. International myeloma working group and nation-wide guidelines provide recommendations for guiding practice. However, there are remarkable variations in practice globally and in particular, adoption of incorrect imaging techniques due to lack of awareness/education, lack of equipment or personnel and resource constraints. These limitations are not specific to any particular geogra

Plasma Cell Myeloma: Биохимический анализ диагноза, лечения и умного нанокарьера - терапевтического развития.

Плазменная миелома (ПХМ) классифицируется как рак крови и характеризуется аномальным распространением плазменных клеток в костном мозге и чрезмерным производством моноколональных иммуноглобулинов, что приводит к постоянному повреждению жизненно важных органов. Несмотря на то, что стратегии лечения улучшились благодаря разработке протеазонных ингибиторов (ИП), иммуноводных препаратов (ИМИД) и моноклонных антител (mAbs), ПХМ остается неизлечимым заболеванием из-за молекулярной неоднородности и развития сопротивляемости лекарствам. В этом обзоре мы обсуждаем биохимические и молекулярные основы, л

Совпадение в аннотации оригинала
Plasma cell myeloma (PCM) is classified as a blood cancer and is characterized by the abnormal proliferation of plasma cells in the bone marrow and the excessive production of monoclonal immunoglobulins, which lead to permanent damage to vital organs. Although treatment strategies have improved with the development of proteasome inhibitors (PIs), immunomodul…

Maternal plasma cell-free RNA as a predictor of early and late-onset preeclampsia throughout pregnancy.

Early- and late-onset preeclampsia (EOPE and LOPE) pose serious maternal-fetal risks, yet non-invasive early prediction remains challenging. In a prospective cohort of 9,586 pregnancies, we analyze trimester-specific plasma cell-free RNA (cfRNA) profiles from 42 EOPE and 43 LOPE cases versus 131 normotensive controls. Organ-specific transcriptomic shifts distinguish EOPE from LOPE. Predictive models based on cfRNA signatures identify EOPE up to 18.0 weeks before clinical onset in the first-trimester (T1) (AUC = 0.88), and 8.5 weeks in the second trimester (T2) (AUC = 0.89). LOPE is predicted 1

Tissue of origin characterization of cell free DNA in seminal plasma: Implications for new liquid biopsies.

Liquid biopsies are becoming increasingly used for the detection and monitoring of disease states. While cell free DNA (cfDNA) in blood and urine have been well studied, much less is known about the composition of cfDNA in seminal fluid. We sought to characterize cfDNA in seminal fluid through tissue of origin studies using methylation analysis in men aged 21-60 yrs. We confirmed the observations of others that seminal fluid contains an abundance of cfDNA that is both nucleosomal and > 1 kb. However, here we demonstrate for the first time that the high molecular weight (HMW) DNA harbors a lowe

Augmentation of PRDX1-DOK3 interaction alleviates rheumatoid arthritis progression by suppressing plasma cell differentiation.

Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by persistent inflammation and joint damage, accompanied by the accumulation of plasma cells, which contributes to its pathogenesis. Understanding the genetic alterations occurring during plasma cell differentiation in RA can deepen our comprehension of its pathogenesis and guide the development of targeted therapeutic interventions. Here, our study elucidates the intricate molecular mechanisms underlying plasma cell differentiation by demonstrating that PRDX1 interacts with DOK3 and modulates its degradation by the autoph…

Genetic, epigenetic, and molecular determinants of multiple myeloma and precursor plasma cell disorders: a pathophysiological overview.

Multiple myeloma (MM) is a malignancy of clonal plasma cells that arises from precursor conditions, including monoclonal gammopathy of undetermined significance (MGUS) and smoldering multiple myeloma (SMM). Disease progression is driven by a complex interplay of genetic alterations, epigenetic dysregulation, and support from the bone marrow microenvironment. Early events such as chromosomal translocations (e.g. t(4;14)), copy number abnormalities (e.g. del(17p), gain(1q)), and driver mutations in KRAS, NRAS, TP53, and DIS3 promote clonal evolution. These are complemented by non-coding regulato…

Plasma cell-free DNA as a monitoring tool for high-risk pregnancies associated with antiphospholipid syndrome.

INTRODUCTION: Despite thromboprophylaxis, women with antiphospholipid syndrome (APS) face high-risk pregnancies due to proinflammatory and prothrombotic states. This highlights the need for new monitoring and prognostic tools. Recent insights into the pathophysiological role of neutrophil activation and extracellular trap (NET) formation in this syndrome led to the exploration of plasma cell-free DNA (cfDNA), a derivative of NETosis, as a promising biomarker. MATERIALS AND METHODS: cfDNA was isolated and quantified from plasma samples of healthy pregnant women (control group, HC) and women wi

Therapeutic vaccine-induced plasma cell differentiation is defective in the presence of persistently high HBsAg levels.

BACKGROUND & AIMS: Mechanisms behind the impaired response of antigen-specific B cells to therapeutic vaccination in chronic hepatitis B vir … ng antibodies with vaccines can surmount this altered humoral response associated with atypical pre-plasma cells, leading to improved therapeutic efficacy in HBV carrier mice. IMPACT AND IMPLICATIONS: Therapeutic vaccines aimed at combatting HBV encounter suboptimal humoral responses in clinical settings, and the mechanisms impeding their effectiveness have r …

Genetic alterations in chronic lymphocytic leukemia and plasma cell neoplasms - a practical guide to WHO HAEM5.

The 5th edition of the World Health Organization Classification of Haematolymphoid Tumours (WHO-HAEM5) provides a revised classification of lymphoid malignancies including chronic lymphocytic leukemia (CLL) and plasma cell myeloma/multiple myeloma (PCM/MM). For both diseases the descriptions of precursor states such as monoclonal B-cell lymphocytosis and monoclonal gammopathy of uncertain significance (MGUS) have been updated including a better risk stratification model. New insights on mutational landscapes and branching evolutionary pattern were embedded as diagnostic and prognostic factors,

Discriminating Benign from Malignant Lung Diseases Using Plasma Glycosaminoglycans and Cell-Free DNA.

We aimed to investigate the use of free glycosaminoglycan profiles (GAGomes) and cfDNA in plasma to differentiate between lung cancer and benign lung disease, in a cohort of 113 patients initially suspected of lung cancer. GAGomes were analyzed in all samples using the MIRAM® Free Glycosaminoglycan Kit with ultra-high-performance liquid chromatography and electrospray ionization triple quadrupole mass spectrometry. In a subset of samples, cfDNA concentration and NGS-data was available. We detected two GAGome features, 0S chondroitin sulfate (CS), and 4S CS, with cancer-specific changes. Based