Objectives: The aims of this study were to investigate the presence of human herpesvirus 6 (HHV6) A and B in human pancreata and to search for signs of active infection in this organ of subjects with and without type 1 diabetes (T1D).
Methods: Pancreata from brain-dead organ donors with and without T1D were examined for the presence of HHV6 genomic sequences by polymerase chain reaction (PCR), transcripts by reverse transcriptase-PCR, and protein by immunohistochemistry. Quantitative PCR of isolated pancreatic islets and exocrine cell clusters was used to determine the intrapancreatic location of HHV6 DNA.
Results: Human herpesvirus 6B genomic sequences were present in 1 of 2 donors who died of acute-onset T1D, 4 of 6 donors with long-standing T1D, and 9 of 12 nondiabetic donors. Higher copy numbers of HHV6B DNA were present in isolated islets than in exocrine tissue from the same donors. No signs of active HHV6 transcription were found. Human herpesvirus 6A was not present in any tested pancreas.
Conclusions: The herein presented data demonstrate, for the first time, the presence of a latent HHV6B infection in the pancreas and islets of Langerhans. Whether this virus can contribute to disease in the pancreas remains to be determined.
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http://dx.doi.org/10.1097/MPA.0000000000000927 | DOI Listing |
Front Oncol
December 2024
The Second Infectious Disease Department, Xixi Hospital of Hangzhou, Hangzhou, China.
Kaposi's sarcoma (KS) is a soft tissue lesion that resembles a hyperpigmented angiosarcoma and is typically associated with human herpesvirus 8 (HHV-8) infection. It is most frequently observed in immunocompromised patients, particularly those with AIDS, and is also referred to as HIV-associated Kaposi's sarcoma (AIDS-KS). The disease progresses rapidly, is challenging to manage, and has a high mortality rate.
View Article and Find Full Text PDFJ Infect
January 2025
Department of Oncology and National Centre for HIV Malignancy, Chelsea and Westminster Hospital, London, UK; Centre for Immunology and Vaccinology, Department of Infectious Diseases, Imperial College, London, UK. Electronic address:
In solid organ transplant recipients (SOTRs), the oncogenic virus human herpesvirus-8 (HHV-8) also named Kaposi sarcoma herpesvirus (KSHV) causes four clinical diseases: Kaposi Sarcoma, Primary Effusion Lymphoma, Multicentric Castleman Disease (MCD), and KSHV inflammatory cytokine syndrome (KICS). This review outlines these clinical scenarios and discusses their management. Although HHV8 related disease in SOTR was first described more than three decades ago, there is a lack of data on treatment so much of the guidance is based on evidence in other immunodeficient patients, particularly people living with HIV.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Virus Research Laboratory, ICMR-National Institute of Cholera and Enteric Disease, Kolkata 700010, India. Electronic address:
Human cytomegalovirus (HCMV) is a common herpesvirus that can severely affect transplant recipients, those with AIDS, and newborns. Existing synthetic medications face limitations, including toxicity, processing issues, and viral resistance. As part of this study, the efficacy of the extracellular enzyme laccase isolated from a widely available mushroom (Pleurotus pulmonarius) was compared to that of ganciclovir, a common antiviral, used against HCMV.
View Article and Find Full Text PDFCell Rep
December 2024
School of Pharmacy, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 9112102, Israel; Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA. Electronic address:
Alzheimer's disease (AD) diagnosis relies on the presence of extracellular β-amyloid (Aβ) and intracellular hyperphosphorylated tau (p-tau). Emerging evidence suggests a potential link between AD pathologies and infectious agents, with herpes simplex virus 1 (HSV-1) being a leading candidate. Our investigation, using metagenomics, mass spectrometry, western blotting, and decrowding expansion pathology, detects HSV-1-associated proteins in human brain samples.
View Article and Find Full Text PDFAm J Dermatopathol
January 2025
Department of Dermatology, Columbia University Medical Center, New York, NY; and.
Primary effusion lymphoma (PEL) is a rare and aggressive B-cell lymphoma typically associated with human herpesvirus 8 (HHV-8) and Epstein-Barr virus infections. It classically presents as a malignant effusion in body cavities, but rarely presents with an extracavitary variant characterized by solid tumors in lymph nodes or extranodal sites such as the gastrointestinal tract, skin, lungs, and nervous system. This case report describes an unusual presentation of primary cutaneous extracavitary PEL in an HIV-positive patient that has only been reported in 8 cases previously.
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