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Viruses

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Запоздалая прогрессивная многофукальная лейкоэнцефалопатия после теклистамб в множественной миеломе: продление периода инфекционного риска.

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… In this setting, progressive multifocal leukoencephalopathy (PML) - a rare demyelinating disease of the central nervous system caused by John Cunningham polyomavirus (JC virus) reactivation - has recently emerged as a potential complication. … Role of CD4 + and CD8 + T-cell responses against JC virus in the outcome of patients with progressive multifocal leukoencephalopathy (PML) and PML with immune reconstitution inflammatory syndrome. J Virol. 2011;85(14):7256-7263. …

Progressive Multifocal Leukoencephalopathy after Administration of Front-Line Obinutuzumab and Venetoclax in a Patient with Chronic Lymphocytic Leukemia: Case Report.

INTRODUCTION: Progressive multifocal leukoencephalopathy (PML) is a rare and often fatal demyelinating disease of the central nervous system caused by the reactivation of the John Cunningham virus (JCV) in immunocompromised patients. Obinutuzumab is type II anti-CD 20 antibody, used in combination with venetoclax for chronic lymphocytic leukemia (CLL). CASE PRESENTATION: A 75-year-old female patient was diagnosed with PML after a short course of obinutuzumab and venetoclax started for a newly diagnosed CLL. There was no history of hepatitis B, C, or human-immunodeficiency virus. Quantitative

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… Similarly, a case of PML in multiple myeloma following SARS-CoV-2 infection emphasized that COVID-19-related immune dysfunction and B-cell depletion from therapies may predispose patients to JC virus reactivation [ 11 ]. … JC virus DNA is present in many human brain samples from patients without progressive multifocal leukoencephalopathy . J Virol . 1992 ; 66 ( 10 ): 5726 – 34 . 1326640 10.1128/jvi.66.10.5726-5734.1992 PMC241447 3. Sidhu N , McCutchan JA . …

The Oncolytic Virotherapy Era in Cancer Management: Prospects of Applying H-1 Parvovirus to Treat Blood and Solid Cancers.

Non-Hodgkin lymphoma (NHL) and leukemia are among the most common cancers worldwide. While the treatment of NHL/leukemia of B-cell origin has much progressed with the introduction of targeted therapies, few treatment standards have been established for T-NHL/leukemia. As presentation in both B- and T-NHL/leukemia patients is often aggressive and as prognosis for relapsed disease is especially dismal, this cancer entity poses major challenges and requires innovative therapeutic approaches. In clinical trials, oncolytic viruses (OVs) have been used against refractory multiple myeloma (MM). In pr

Влияние возраста на изменение или прекращение болезней, изменяющих терапию при множественном склерозе.

Пожилые пациенты в возрасте ≥55 лет составляют почти половину от общей численности населения страны. Несмотря на то, что в результате возникновения заболеваний происходят такие точечные и подстрекательские процессы демиелионации и такие прогрессивные процессы, как разрозненное воспаление CNS, нейродегенерация и отказ компенсационных механизмов, наблюдается сдвиг в преобладающих болезнях с заметным клиническим прогрессом в течение пятого десятилетия жизни. Клинически это проявляется в уменьшении числа рецидивов в клинической области и активности МРТ в качестве лиц в возрасте MS, что приводит к

Secondary Osteoporosis and Metabolic Bone Diseases.

Fragility fracture is a worldwide problem and a main cause of disability and impaired quality of life. It is primarily caused by osteoporosis, characterized by impaired bone quantity and or quality. Proper diagnosis of osteoporosis is essential for prevention of fragility fractures. Osteoporosis can be primary in postmenopausal women because of estrogen deficiency. Secondary forms of osteoporosis are not uncommon in both men and women. Most systemic illnesses and organ dysfunction can lead to osteoporosis. The kidney plays a crucial role in maintaining physiological bone homeostasis by control

Вирус Варичеллы Зостер и повторный перевод множественных склерозов.

Множественный склероз (MS) представляет собой иммунное расстройство; однако мало что известно о пусковых факторах аномальной иммунной реакции. В качестве потенциальных участников были упомянуты различные вирусы из семейства герпесов. Здесь мы анализируем доказательства, подтверждающие связь вируса варицелла-зостера (VZV) с MS. Эпидемиологические исследования, проведенные в географических районах, где в последние десятилетия наблюдалось увеличение числа случаев заболевания MS, показали высокую частотность варицелла и зостера в клинических предместьях пациентов MS, а также результаты лабораторны

Thrombotic risk in hepatitis C: Interplay between hepatic dysfunction, viral-driven inflammation, and cardiovascular consequences.

Hepatitis C virus (HCV) infection, traditionally regarded as a hepatotropic disease, is increasingly recognized as a systemic condition with significant thrombotic implications. Chronic HCV induces a persistent proinflammatory and prothrombotic state that substantially elevates the risk of both venous and arterial events. Mechanistically, HCV drives endothelial dysfunction, enhances platelet activation, disrupts coagulation and fibrinolytic balance, and promotes immune-mediated vascular injury through cryoglobulinemia and chronic systemic inflammation. Clinical manifestations range from portal

Trial watch: Oncolytic viruses for cancer therapy.

Oncolytic virotherapy is emerging as a promising approach for the treatment of several neoplasms. The term "oncolytic viruses" is generally employed to indicate naturally occurring or genetically engineered attenuated viral particles that cause the demise of malignant cells while sparing their non-transformed counterparts. From a conceptual standpoint, oncolytic viruses differ from so-called "oncotropic viruses" in that only the former are able to kill cancer cells, even though both display a preferential tropism for malignant tissues. Of note, such a specificity can originate at several diffe

Treatment of medulloblastoma using an oncolytic measles virus encoding the thyroidal sodium iodide symporter shows enhanced efficacy with radioiodine.

BackgroundMedulloblastoma is the most common malignant brain tumor of childhood. Although the clinical outcome for medulloblastoma patients has improved significantly, children afflicted with the disease frequently suffer from debilitating side effects related to the aggressive nature of currently available therapy. Alternative means for treating medulloblastoma are desperately needed. We have previously shown that oncolytic measles virus (MV) can selectively target and destroy medulloblastoma tumor cells in localized and disseminated models of the disease. MV-NIS, an oncolytic measles virus t

Clinical development of gene therapy: results and lessons from recent successes.

Therapeutic gene transfer holds the promise of providing lasting therapies and even cures for diseases that were previously untreatable or for which only temporary or suboptimal treatments were available. For some time, clinical gene therapy was characterized by some impressive but rare examples of successes and also several setbacks. However, effective and long-lasting treatments are now being reported from gene therapy trials at an increasing pace. Positive outcomes have been documented for a wide range of genetic diseases (including hematological, immunological, ocular, and neurodegenerativ

Hiv and Lymphoma: from Epidemiology to Clinical Management.

Patients infected with human immunodeficiency virus (HIV) are at increased risk for developing both non-Hodgkin's lymphoma (NHL) and Hodgkin's lymphoma (HL). Even if this risk has decreased for NHL after the introduction of combination antiretroviral therapy (cART), they remain the most common acquired immune deficiency syndrome (AIDS)-related cancer in the developed world. They are almost always of B-cell origin, and some specific lymphoma types are more common than others. Some of these lymphoma types can occur in both HIV-uninfected and infected patients, while others preferentially develop

Unraveling the Role of Allo-Antibodies and Transplant Injury.

Alloimmunity driving rejection in the context of solid organ transplantation can be grossly divided into mechanisms predominantly driven by either T cell-mediated rejection (TCMR) and antibody-mediated rejection (ABMR), though the co-existence of both types of rejections can be seen in a variable number of sampled grafts. Acute TCMR can generally be well controlled by the establishment of effective immunosuppression (1, 2). Acute ABMR is a low frequency finding in the current era of blood group and HLA donor/recipient matching and the avoidance of engraftment in the context of high-titer, pref

Decoy cells detected in the urine of a patient with complex karyotype Myelodysplastic neoplasms who underwent umbilical cord blood transplantation: a case report.

BACKGROUND: Currently, few literature reports document cases of decoy cells in the urine of umbilical cord blood transplant patients. The majority of the literature indicates that decoy cells are frequently identified in the urine of kidney transplant recipients. CASE PRESENTATION: This case report describes a patient with Myelodysplastic Neoplasms featuring a complex karyotype who underwent umbilical cord blood transplantation. Postoperative urinary cytology revealed decoy cells, and subsequent BK virus nucleic acid testing was positive. However, the routine use of antiviral drugs by the phy

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… Polyomaviruses including the common BK and JC viruses, which can remain dormant in renal tubular epithelial cells and urothelial cells until the host’s immune system is compromised, then they can quickly reactivate and replicate, causing death of renal tubular epithelial cells in transplanted kidneys … In addition to BK and JC viruses, other types of polyomaviruses may also lead to the appearance of decoy cells, but most hospitals only detect nucleic acids of BK and JC viruses, and other unknown viral subtypes and adenovirus infections may also lead to the formation of decoy cells in urine [ 21 ]. …

Cryoglobulin Test and Cryoglobulinemia Hepatitis C-Virus Related.

Cryoglobulins are immunoglobulins that precipitate in serum at temperatures below 37°C and resolubilize upon warming. The clinical syndrome of cryoglobulinemia usually includes purpura, weakness, and arthralgia, but the underlying disease may also contribute other symptoms. Blood samples for cryoglobulin are collected, transported, clotted and spun at 37°C, before the precipitate is allowed to form when serum is stored at 4°C in a Wintrobe tube for at least seven days. The most critical and confounding factor affecting the cryoglobulin test is when the preanalytical phase is not fully complete

Stevens - Johnson Syndrome and Toxic Epidermal Necrolysis; Extensive Review of Reports of Drug-Induced Etiologies, and Possible Therapeutic Modalities.

Stevens - Johnson Syndrome and Toxic Epidermal Necrolysis are adverse hypersensitivity reactions that affect the skin and mucous membranes. They are characterised by erythematous macules and hemorrhagic erosions of the mucous membranes. Epidermal detachments of varying degrees of severity also occur in these conditions. Various aetiologies are associated with these conditions, with adverse drug reaction being the most common. Though the worldwide incidence of these conditions is recorded as low, diverse types of medication are being observed to lead to these conditions. This review compiles in

Clinical management of cancer after kidney transplantation.

Advances in immunosuppressive therapy have markedly improved short-term graft survival post-kidney transplantation (KT); however, these advances have also profoundly altered long-term disease patterns in transplant recipients. Cancer remains a major barrier limiting improvements in long-term survival. Kidney transplant recipients are at increased risk of malignancy owing to impaired graft function and immunosuppressive medications. To improve cancer-related outcomes, comprehensive strategies encompassing prevention, early detection through screening, and appropriate treatment are required. Pri

Monomorphic T-cell post-transplant lymphoproliferative disorder with features of HHV8-negative primary effusion lymphoma: an autopsy case and review of the literature.

A 67-year-old man underwent renal transplantation in his twenties. He developed refractory pleural effusion, with many large lymphocytes with severe atypia and mitosis in the effusion, indicating malignant lymphoma. He finally died of respiratory failure. An autopsy revealed atypical lymphocytes positive for CD3, CD4, and CD30 and negative for CD8, CD20, PAX5, human herpesvirus (HHV) 8, and Epstein-Barr virus-encoded small RNAs by immunohistochemistry and in situ hybridization. Atypical lymphocytes also had T-cell receptor gene rearrangements Jβ2, Jγ2, and Jδ1 and chromosomal aberrations der(8

Прогрессивная многофукальная лейкоэнцефалопатия как осложнение лечения множественным склерозом, которое может привести к изменению болезней

Обзор дает современное представление о патогенезе прогрессивной многофукальной лейкоэнцефалопатии (ПМЛ), которая представляет собой серьезную и потенциально фатальную форму расстройства белых позвоночников головного мозга. Анализируется информация о частотности его развития у пациентов, которые проходят курс лечения множественным склерозом. В этой категории пациентов с множественным склерозом подробно описаны алгоритмы оптимизации рисков PML. Обобщаются данные о наиболее важных биомаркерах PML, поиск которых в настоящее время ведется во многих центрах по всему миру. Первый случай PML в России

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… Discovery and epidemiology of the human polyomaviruses BK virus (BKV) and JC virus (JCV). Adv Exp Med Biol 2006; 577: 19–45. DOI: 10.1007/0-387-32957-9_2. PMID: 16626025. 18. Reid C.E., Li H., Sur G. et al. Sequencing and analysis of JC virus DNA from natalizumab-treated PML patients. … Relevance of CD34+ cells as a reservoir for JC virus in patients with multiple sclerosis. JAMA Neurol 2014; 71: 1192. DOI: 10.1001/jamaneurol.2014.1858. PMID: 25200546. 20. Zakharova M.N. [Progressive multifocal leukoencephalopathy (literature review)]. …

Вирус Эпштейн-Барр, витамин D и иммунная реакция: связи с последствиями множественного склероза.

Множественный склероз (MS) — аутоиммунное заболевание центральной нервной системы (CNS) без какого-либо окончательного запуска. Однако эпидемиологические исследования показывают, что важными факторами риска являются такие экологические факторы, как инфекция вируса Эпштейн-Барр (ЭБВ) и низкий уровень витамина D (вид D) у генетически предрасположенных лиц. Одно из ведущих предложений заключается в том, что EBV приводит в действие MS с помощью таких механизмов, как молекулярная имитация, где активированные автоматически реактивные B и T лимфоциты ошибочно нацелены на самоантигены. В соответствии