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The Proceedings of the 19th International Cancer Imaging Society Meeting and Annual Teaching Course : Verona, Italy. 7 - 9 October 2019.

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Всемирный конгресс молекулярного воображения 2022.

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The perioperative management of geriatric patients in transplantation surgery-clinical, immunological, and translational considerations.

Transplant surgery encompasses two primary branches: solid organ transplantation (SOT) and vascularized composite allotransplantation (VCA). As the global population ages, elderly transplant patients become a more pressing clinical challenge. Elderly transplant recipients require specialized care that addresses their unique needs, including increased comorbidities and frailty. Despite the growing recognition of these challenges, there is a paucity of studies that synthesize the current knowledge on this patient cohort, from immunological changes over translational challenges to tailored clinic

Rapid Fire Presentations

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The role of bone-modifying agents in myeloma bone disease.

Bone disease is common in patients with multiple myeloma (MM), which manifests as bone pain and skeletal-related events (SREs) such as pathological fractures and spinal cord compression. Myeloma bone disease (MBD) can adversely affect the quality of life of patients and have negative effects on morbidity and mortality. The pathogenesis of MBD is complex, and several factors are involved in the dysregulation of bone metabolism and uncoupling of bone remodeling, which result in net bone loss and devastating SREs. Broadly speaking, elevated osteoclast activity, suppressed osteoblast activity, and

Modulating epigenetic modifications for cancer therapy (Review).

Cancer is a global public health concern. Alterations in epigenetic processes are among the earliest genomic aberrations occurring during cancer development and are closely related to progression. Unlike genetic mutations, aberrations in epigenetic processes are reversible, which opens the possibility for novel pharmacological treatments. Non‑coding RNAs (ncRNAs) represent an essential epigenetic mechanism, and emerging evidence links ncRNAs to carcinogenesis. Epigenetic drugs (epidrugs) are a group of promising target therapies for cancer treatment acting as coadjuvants to reverse drug resist

Pro- and Antioxidant Effects of Vitamin C in Cancer in correspondence to Its Dietary and Pharmacological Concentrations.

Vitamin C is an antioxidant that may scavenge reactive oxygen species preventing DNA damage and other effects important in cancer transformation. Dietary vitamin C from natural sources is taken with other compounds affecting its bioavailability and biological effects. High pharmacological doses of vitamin C may induce prooxidant effects, detrimental for cancer cells. An oxidized form of vitamin C, dehydroascorbate, is transported through glucose transporters, and cancer cells switch from oxidative phosphorylation to glycolysis in energy production so an excess of vitamin C may limit glucose tr

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… This mispairing is targeted by thymine DNA glycosylase (TDG) of the base excision repair or mismatch repair (MMR) system that may restore cytosine in the place of thymine. Catani et al. showed that vitamin C upregulated the MLH1 (Mut L homologue-1) protein in human keratinocytes [ 123 ]. …

Treating Protein Misfolding Diseases: Therapeutic Successes Against Systemic Amyloidoses.

Misfolding and extracellular deposition of proteins is the hallmark of a heterogeneous group of conditions collectively termed protein misfolding and deposition diseases or amyloidoses. These include both localized (e.g. Alzheimer's disease, prion diseases, type 2 diabetes mellitus) and systemic amyloidoses. Historically regarded as a group of maladies with limited, even inexistent, therapeutic options, some forms of systemic amyloidoses have recently witnessed a series of unparalleled therapeutic successes, positively impacting on their natural history and sometimes even on their incidence. I

Advanced multifunctional thermo- and electro-stimulative hydrogels for bone regeneration.

Bone defects caused by trauma, infection, tumors, osteoporosis, and diabetes disrupt skeletal integrity and impair regeneration. The healing process involves inflammatory hematoma formation, callus development, and remodeling, coordinated by diverse cells and signaling pathways. Conventional grafts and inorganic implants are limited by donor scarcity, immune rejection, and low bioactivity, necessitating more effective repair strategies. Recently, multifunctional smart hydrogels have emerged as a frontier in bone regeneration due to their biocompatibility, tunable structure, and ability to inte

The science of tumor-infiltrating lymphocytes (TIL): perspectives from the SITC Surgery Committee.

Immunity to solid tumors is associated with the hallmarks of cancer-associated inflammation and the ability of immune mechanisms to limit tumor progression. Application of expanded tumor-infiltrating lymphocyte adoptive T cell therapy (TIL ACT) in clinical trials is now practiced at many sites around the world. Prior to immune checkpoint blockade (ICB), an approximate 50% objective response rate was consistently observed across multiple institutions for patients with melanoma. This now-approved strategy approaches 35% in recent studies from the USA and 49% with more highly selected patients in

Mobilizing stem cells and inhibition of autoimmunity synergistically modify autoimmune disease to relieve pain: a potential MRG-001 therapy for rheumatoid arthritis.

OBJECTIVES: Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by persistent synovial inflammation, bone erosion, cartilage destruction, and debilitating pain. Current therapies often fall short in preventing structural damage and restoring immune balance. To address these limitations, we evaluated MRG-001 - a fixed-dose combination of plerixafor (AMD3100) and low-dose tacrolimus (FK506) with reported immunoregulatory and regenerative potential - in preclinical models of RA. METHODS: The therapeutic efficacy of MRG-001 was assessed in collagen-induced arthritis and collag

NUPR1 Promotes Radioresistance in Colorectal Cancer Cells by Inhibiting Ferroptosis.

Radioresistance is a major clinical challenge and the underlying mechanism has not been thoroughly elucidated. In this study, a radioresistant (RR) cell line is established to explore the transcriptomic signatures of radioresistance in colorectal cancer (CRC). KEGG enriched pathway analysis demonstrated that ferroptosis is inactivated in RR cells. Further detection confirmed that radiotherapy can promote ferroptosis, and ferroptosis inactivation is one of the hallmarks of radioresistance in CRC. What's more, induction of ferroptosis can restore the radiosensitivity of CRC cells. Then, we perfo

Протеомический анализ показывает, что потенциальные молекулы могут выступать посредником в кортикальной патологии и выявлять возможные биомаркеры в животной модели множественного склероза.

ВВЕДЕНИЕ: Множественный склероз (MS) представляет собой сложное нейродегенеративное заболевание, характеризующееся повторяющимися вспышками, обезвоживанием, повреждением аксона и последующей потерей функции. MS представляет широкий спектр клинических курсов, прогрессивные формы которых приводят к необратимой неврологической инвалидности. Кортикальные демиелионирующие повреждения имеют ключевое значение для патологии этих прогрессивных форм, и в последние десятилетия они приобретают решающее значение в силу их тесной связи с физической инвалидностью и когнитивным упадком. Несмотря на это, механ

Effect of N-Acetylcysteine on Cisplatin Toxicity: A Review of the Literature.

N-acetylcysteine (NAC) is a membrane-permeable cysteine precursor capable of enhancing the intracellular cysteine pool, enhancing cellular glutathione (GSH) synthesis, and thus potentiating the endogenous antioxidant mechanism. Late administration of NAC after cisplatin has been shown in different in vivo studies to reduce the side effects caused by various toxicities at different levels without affecting the antitumor efficacy of platinum, improving total and enzymatic antioxidant capacity and decreasing oxidative stress markers. These characteristics provide NAC with a rationale as a potenti

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… Role of the DNA base excision repair protein, APE1 in cisplatin, oxaliplatin, or carboplatin induced sensory neuropathy. PLoS One . 2014;9(9):e106485. doi: 10.1371/journal.pone.0106485 46. Lu SC. Glutathione synthesis. …

Practical guidance for the management of inflammatory bowel disease in patients with cancer. Which treatment?

Clinicians involved in the treatment of inflammatory bowel disease (IBD) increasingly come across patients with current or previous history of malignancies. With increasing and earlier use of immunosuppression and biologics in IBD patients, the question arises whether these treatments further increase the risk of new or recurrent cancers. A number of population-based observational studies have now reported the odds of development of new or recurrent cancers with thiopurines and antitumour necrosis factors (anti-TNFs). These data combined with data arising from treatment registries from other i

Correlation of long non-coding RNA expression with metastasis, drug resistance and clinical outcome in cancer.

The therapeutic response and clinical outcome of patients diagnosed with the same cancer type and that receive identical treatment is highly variable to reflect the genetic heterogeneity within tumor cells. Non-coding RNAs (ncRNAs) are recently discovered molecules that regulate eukaryotic gene expression and represent a significant advance towards a better understanding of the mechanisms that govern cellular growth. NcRNAs are essential for the proper regulation of cell proliferation and survival under physiologic conditions and are deregulated in many pathologies, e.g., human cancers. NcRNAs

The role of whole brain radiation therapy in the management of newly diagnosed brain metastases: a systematic review and evidence-based clinical practice guideline.

QuestionShould patients with newly-diagnosed metastatic brain tumors undergo open surgical resection versus whole brain radiation therapy (WBRT) and/or other treatment modalities such as radiosurgery, and in what clinical settings?Target populationThese recommendations apply to adults with a newly diagnosed single brain metastasis amenable to surgical resection.RecommendationsSurgical resection plus WBRT versus surgical resection alone Level 1 Surgical resection followed by WBRT represents a superior treatment modality, in terms of improving tumor control at the original site of the metastasis

Role of PARP Inhibitors in Cancer Immunotherapy: Potential Friends to Immune Activating Molecules and Foes to Immune Checkpoints.

Poly (ADP-ribose) polymerase (PARP) inhibitors (PARPi) induce cytotoxic effects as single agents in tumors characterized by defective repair of DNA double-strand breaks deriving from BRCA1/2 mutations or other abnormalities in genes associated with homologous recombination. Preclinical studies have shown that PARPi-induced DNA damage may affect the tumor immune microenvironment and immune-mediated anti-tumor response through several mechanisms. In particular, increased DNA damage has been shown to induce the activation of type I interferon pathway and up-regulation of PD-L1 expression in cance

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… PARP-1 exerts its activity through the post-translational modification of partner molecules by adding linear or branched poly(ADP-ribose) (PAR) chains using NAD+ as its substrate [ 4 ], thus modulating the functional engagement of enzymes involved in the repair of SSBs (i.e., base excision repair (BER …

Vitamin C-Sources, Physiological Role, Kinetics, Deficiency, Use, Toxicity, and Determination.

Vitamin C (L-ascorbic acid) has been known as an antioxidant for most people. However, its physiological role is much larger and encompasses very different processes ranging from facilitation of iron absorption through involvement in hormones and carnitine synthesis for important roles in epigenetic processes. Contrarily, high doses act as a pro-oxidant than an anti-oxidant. This may also be the reason why plasma levels are meticulously regulated on the level of absorption and excretion in the kidney. Interestingly, most cells contain vitamin C in millimolar concentrations, which is much highe

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… Generally, 2OGO catalyze specific hydroxylation of substrates, which, in turn, leads to demethylations via other catalytic cycles or downstream pathway involving thymine-DNA-glycosylase, which catalyzed base excision with DNA base excision repair [ 101 , 120 ]. …

Multiple myeloma, a quintessential malignant disease of aging: a geroscience perspective on pathogenesis and treatment.

Multiple myeloma (MM) is an incurable plasma cell malignancy, which is predominantly a disease of older adults (the median age at diagnosis is 70 years). The slow progression from asymptomatic stages and the late-onset of MM suggest fundamental differences compared to many other hematopoietic system-related malignancies. The concept discussed in this review is that age-related changes at the level of terminally differentiated plasma cells act as the main risk factors for the development of MM. Epigenetic and genetic changes that characterize both MM development and normal aging are highlighted

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… Peng B Hodge DR Thomas SB Cherry JM Munroe DJ Pompeia C Epigenetic silencing of the human nucleotide excision repair gene, hHR23B, in interleukin-6-responsive multiple myeloma KAS-6/1 cells J Biol Chem 2005 280 6 4182 4187 15550378 10.1074/jbc.M412566200 93. …