We report a case of hairy cell leukemia variant developing in a background of polycythemia vera in a 77-year-old man who presented with lymphocytosis and splenomegaly. Classic hairy cell leukemia in a patient with polycythemia vera has been reported previously, but hairy cell leukemia variant arising in a patient with polycythemia vera has never been described to the best of our knowledge. Initial testing of the peripheral blood showed circulating medium to large leukemic cells with large, centrally placed nuclei, each containing a prominent nucleolus, and some cells showed cytoplasmic projections. A bone marrow biopsy had marked myeloid and erythroid hyperplasia and interstitially distributed cells with a fried-egg appearance. We verified a monoclonal B-cell population by flow cytometric analysis, which revealed expression of bright CD11c, CD22, and CD103 expression, and a lack of CD25 expression. The patient received a 5-day course of cladribine and subsequently had a complete remission. Approximately 2 months later, he had a relapse and was treated with pentostatin; however, he had no clinical response and died.
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http://dx.doi.org/10.5858/2003-127-e209-HCLVDI | DOI Listing |
Mediterr J Hematol Infect Dis
January 2025
Hematology, Department of Translational and Precision Medicine, Sapienza University of Rome, Italy.
Background: Clonal mature B-cell lymphoproliferative disorders (B-LPDs) are a heterogeneous group of neoplasia characterized by the proliferation of mature B lymphocytes in the peripheral blood, bone marrow and/or lymphoid tissues. B-LPDs classification into different subtypes and their diagnosis is based on a multiparametric approach. However, accurate diagnosis may be challenging, especially in cases of ambiguous interpretation.
View Article and Find Full Text PDFPlant Cell Environ
January 2025
Integrative Legume Research Group, School of Agriculture and Food Sustainability, The University of Queensland, St. Lucia, Brisbane, Queensland, Australia.
Hairy-root transformation is widely used to generate transgenic plant roots for genetic functional characterisation studies. However, transformation efficiency can be limited, largely due to the use of binary vectors. Here, we report on the development of novel integrative vectors that significantly increase the transformation efficiency of hairy roots.
View Article and Find Full Text PDFPlant Cell Physiol
January 2025
Plant Genetic Engineering Laboratory, Department of Biotechnology, Bharathiar University, Coimbatore, 641046, India.
Carnosol (CO) and carnosic acid (CA) are pharmaceutically important diterpenes predominantly produced in members of Lamiaceae, Salvia officinalis (garden sage), Salvia fruticosa and Rosmarinus officinalis. Nevertheless, availability of these compounds in plant system is very low. In an effort to improve the in planta content of these diterpenes in garden sage, SmERF6 (Salvia miltiorrhiza Ethylene Responsive Factor 6) transcription factor was expressed heterologously.
View Article and Find Full Text PDFZhongguo Zhong Yao Za Zhi
December 2024
School of Traditional Chinese Medicine, Binzhou Medical College Yantai 264003, China Institute of Basic Medicine, Xiyuan Hospital, China Academy of Chinese Medical Sciences Beijing 100091, China.
This article explored the specific mechanism by which ginsenoside Rg_1 regulates cellular autophagy to attenuate hypoxia/reoxygenation(H/R) injury in HL-1 cardiomyocytes through the microRNA155(miR-155)/neurogenic gene Notch homologous protein 1(Notch1)/hairy and enhancer of split 1(Hes1) pathway. An HL-1 cell model with H/R injury was constructed, and ginsenoside Rg_1 and/or Notch1 inhibitor DAPT and miR-155 mimics were used to treat cells. Cell counting kit(CCK)-8 was used to detect the relative viability of HL-1 cells with H/R injury.
View Article and Find Full Text PDFPlant Cell Physiol
December 2024
RIKEN Center for Sustainable Resource Science, Yokohama 230-0045, Japan.
Soybean (Glycine max) is a leguminous crop cultivated worldwide that accumulates high levels of isoflavones. Although previous research has often focused on increasing the soybean isoflavone content because of the estrogen-like activity of dietary soy in humans, the rapidly increasing demand for soybean as a plant-based meat substitute has raised concerns about excessive isoflavone intake. Therefore, the production of isoflavone-free soybean has been anticipated.
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