scholarly journals Abnormal expansions of polyclonal large to small size granular lymphocytes: reactive or neoplastic process?

Blood ◽  
1984 ◽  
Vol 63 (6) ◽  
pp. 1271-1277 ◽  
Author(s):  
G Semenzato ◽  
G Pizzolo ◽  
A Ranucci ◽  
C Agostini ◽  
M Chilosi ◽  
...  

Abstract Morphological, immunologic, and functional properties of peripheral blood cells from two patients with chronic proliferations of granular lymphocytes are described. Cells from both patients showed a heterogeneous pattern from both a morphological and immunologic standpoint, indicating a polyclonal, rather than a monoclonal, expansion of these cells. In fact, both large and small-to-medium-sized granular lymphocytes were observed, and different percentages of positivity were found in the analysis with a large panel of monoclonal antibodies. Serologic and histologic features support the hypothesis that this lymphocytosis could be secondary to bacterial or viral infections rather than a primary event, suggesting that these patients may have chronic reactive immunoregulatory disorders.

Blood ◽  
1984 ◽  
Vol 63 (6) ◽  
pp. 1271-1277 ◽  
Author(s):  
G Semenzato ◽  
G Pizzolo ◽  
A Ranucci ◽  
C Agostini ◽  
M Chilosi ◽  
...  

Morphological, immunologic, and functional properties of peripheral blood cells from two patients with chronic proliferations of granular lymphocytes are described. Cells from both patients showed a heterogeneous pattern from both a morphological and immunologic standpoint, indicating a polyclonal, rather than a monoclonal, expansion of these cells. In fact, both large and small-to-medium-sized granular lymphocytes were observed, and different percentages of positivity were found in the analysis with a large panel of monoclonal antibodies. Serologic and histologic features support the hypothesis that this lymphocytosis could be secondary to bacterial or viral infections rather than a primary event, suggesting that these patients may have chronic reactive immunoregulatory disorders.


2020 ◽  
pp. 32-37
Author(s):  
О.А. Гусева ◽  
И.С. Мельников ◽  
Е.С. Зубкова ◽  
С.Г. Козлов ◽  
Ю.Н. Автаева ◽  
...  

Данные крупных проспективных исследований демонстрируют корреляционную связь уровня С-реактивного белка (СРБ) в крови и риска развития неблагоприятных сердечно-сосудистых событий. Однако остаются малоизученными уровень экспрессии СРБ клетками пери- ферической крови и их способность синтезировать СРБ. Цель исследования. Определение уровней экспрессии СРБ циркулирующими клетками периферической крови. Исследование экспрессии мРНК СРБ макрофагами, полученными из моноцитов периферической крови. Материал и методы. Исследовали эритроциты, тромбоциты и лейкоциты периферической крови 6 добровольцев в возрасте от 30 до 60 лет. Для идентификации фенотипа клеток крови применяли метод проточной цитофлюориметрии с использованием панели моноклональных ан- тител, конъюгированных с различными флюорохромами, а именно CD235a-PE-Cy7, CD41-APC, CD45-PerCP-Cy5.5 и CD14-APC-Cy-7. Уровень экспрессии клетками крови СРБ определяли по уровню флюоресценции связанных с целевыми клетками FITC-конъюгированных моноклональ- ных антител к СРБ («ИМТЕК», Россия). Для определения мРНК СРБ применяли метод количественной полимеразной цепной реакции (ПЦР) с последующим анализом специфичности амплификаций с помощью электрофореза в агарозном геле. Об экспрессии СРБ макрофагами, полученными из моноцитов периферической крови, судили по количеству мРНК, выделенной после их активации липополисахаридом (ЛПС). Результаты. Результаты исследования показали, что СРБ экспрессируют 85,0±10,5% моноцитов; лимфоциты, тромбоциты и эритроци- ты — 7,5±0,6, 3,0±0,3 и 4,3±0,5% соответственно. Методом количественной ПЦР в небольших количествах мРНК СРБ была зарегистри- рована в макрофагах, активированных ЛПС. Ее уровень незначительно, в 0,79±0,73 раза (p=0,96, n=6), отличался относительно гена «домашнего хозяйства». Заключение. Обнаружено, что СРБ присутствует на внешней клеточной мембране до 90% циркулирующих моноцитов и до 10% лимфо- цитов, в то время как эритроциты и тромбоциты не несут на своей поверхности СРБ. Установлена возможность синтеза СРБ стимулиро- ванными ЛПС макрофагами, полученными из моноцитов периферической крови. Data from major prospective studies demonstrate a correlation between blood C-reactive protein (CRP) levels and the risk of adverse cardiovascular events. However, the level of expression of CRP by peripheral blood cells and their ability to synthesize CRP remains poorly studied. The purpose of the study. Determination of CRP expression levels by circulating peripheral blood cells. Investigation of expression of CRP mRNA by macrophages obtained from peripheral blood monocytes. Material and methods. erythrocytes, platelets and leukocytes of peripheral blood were studied in 6 volunteers aged 30 to 60 years. To identify the blood cell phenotype, the method of flow cytofluorimetry was used using a panel of monoclonal antibodies conjugated with different fluorophores, namely, CD235a-PE-Cy7, CD41-APC, CD45-PerCP-Cy5.5 and CD14-APC-Cy-7. Blood cell expression level of CRP was determined by fluorescence level of FITC-conjugated monoclonal antibodies to CRP associated with target cells (IMTEK, Russia). The method of quantitative polymerase chain reaction (PCR) with the subsequent analysis of specificity of amplifications by electrophoresis in agarose gel was used for determination of mRNA of CRP. The expression of DRR by macrophages derived from peripheral blood monocytes was judged by the amount of mRNA isolated after their activation by lipopolysaccharide (LPS). The results. The results of the study showed that CRP express 85.0±10.5% monocytes, lymphocytes, platelets and red blood cells — 7.5±0.6, 3.0±0.3 and 4.3±0.5% respectively. The method of quantitative PCR in small amounts of CRP mRNA was registered in macrophages activated by LPS. Its level was insignificant, by 0.79±0.73 times (p=0.96, n=6), differed from the "household" gene. Conclusion. It was found that CRP is present on the outer cell membrane up to 90% of circulating monocytes and up to 10% of lymphocytes, while red blood cells and platelets do not carry CRP on their surface. The possibility of synthesis of CRP by stimulated LPS macrophages obtained from peripheral blood monocytes has been established


1987 ◽  
Vol 58 (03) ◽  
pp. 936-942 ◽  
Author(s):  
Lindsey A Miles ◽  
Edward F Plow

SummaryGlu-plasminogen binds to platelets; the monocytoid line, U937, and the human fetal fibroblast line, GM1380 bind both plasminogen and its activator, urokinase. This study assesses the interaction of these fibrinolytic proteins with circulating human blood cells. Plasminogen bound minimally to red cells but bound saturably and reversibly to monocytes, granulocytes and lymphocytes with apparent Kd values of 0.9-1.4 μM. The interactions were of high capacity with 1.6 to 49 × 105 sites/cell and involved the lysine binding sites of plasminogen. Both T cells and non-rosetting lymphocytes and two B cell lines saturably bound plasminogen. Urokinase bound saturably to gianulocytes, monocytes, non-rosetting lymphocytes and a B cell line, but minimally to T cells, platelets and red cells. Therefore, plasminogen binding sites of high capacity, of similar affinities, and with common recognition specificities are expressed by many peripheral blood cells. Urokinase receptors are also widely distributed, but less so than plasminogen binding sites. The binding ol plasminogen and/ or urokinase to these cells may lead to generation of cell- associated proteolytic activity which contributes to a variety of cellular functions.


2020 ◽  
Vol 11 ◽  
Author(s):  
Miguel A. Andrade-Navarro ◽  
Katja Mühlenberg ◽  
Eike J. Spruth ◽  
Nancy Mah ◽  
Adrián González-López ◽  
...  

Huntington's disease (HD) is an autosomal dominantly inherited neurodegenerative disorder caused by a trinucleotide repeat expansion in the Huntingtin gene. As disease-modifying therapies for HD are being developed, peripheral blood cells may be used to indicate disease progression and to monitor treatment response. In order to investigate whether gene expression changes can be found in the blood of individuals with HD that distinguish them from healthy controls, we performed transcriptome analysis by next-generation sequencing (RNA-seq). We detected a gene expression signature consistent with dysregulation of immune-related functions and inflammatory response in peripheral blood from HD cases vs. controls, including induction of the interferon response genes, IFITM3, IFI6 and IRF7. Our results suggest that it is possible to detect gene expression changes in blood samples from individuals with HD, which may reflect the immune pathology associated with the disease.


2001 ◽  
Vol 344 (3) ◽  
pp. 175-181 ◽  
Author(s):  
William I. Bensinger ◽  
Paul J. Martin ◽  
Barry Storer ◽  
Reginald Clift ◽  
Steven J. Forman ◽  
...  

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