Freeze-fracture features of epithelioid cells, multinucleated giant cells, and phagocytic macrophages

1987 ◽  
Vol 53 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Hans -Peter Baum ◽  
Wolfgang Thoenes
Keyword(s):  
Freeze Fracture ◽  
Giant Cells ◽  
Multinucleated Giant Cells ◽  
Epithelioid Cells ◽  
Fracture Features

The differentiation of monocytes into macrophages, epithelioid cells, and multinucleated giant cells in subcutaneous granulomas

1979 ◽  
Vol 197 (3) ◽  
pp. 379-396 ◽  
Author(s):  
H. J. van der Rhee ◽  
C. P. M. van der Burgh-de Winter ◽  
W. Th. Daems
Keyword(s):  
Giant Cells ◽  
Multinucleated Giant Cells ◽  
Epithelioid Cells

In Vitro Formation of Macrophage- Epithelioid Cells and Multinucleated Giant Cells by 1?,25-Dihydroxyvitamin D3from Human Circulating Monocytes

1986 ◽  
Vol 465 (1 Tenth Interna) ◽  
pp. 211-220 ◽  
Author(s):  
MASATAKA OHTA ◽  
TETSURO OKABE ◽  
KEIYA OZAWA ◽  
AKIO URABE ◽  
FUMIMARO TAKAKU
Keyword(s):  
Giant Cells ◽  
Multinucleated Giant Cells ◽  
Epithelioid Cells

The differentiation of monocytes into macrophages, epithelioid cells, and multinucleated giant cells in subcutaneous granulomas

1979 ◽  
Vol 197 (3) ◽  
pp. 355-378 ◽  
Author(s):  
H. J. van der Rhee ◽  
C. P. M. van der Burgh-de Winter ◽  
W. Th. Daems
Keyword(s):  
Giant Cells ◽  
Multinucleated Giant Cells ◽  
Epithelioid Cells

scholarly journals Progress of the Art of Macrophage Polarization and Different Subtypes in Mycobacterial Infection

2021 ◽  
Vol 12 ◽  
Author(s):  
Gai Ge ◽  
Haiqin Jiang ◽  
Jingshu Xiong ◽  
Wenyue Zhang ◽  
Ying Shi ◽  
...  
Keyword(s):  
Immune Response ◽  
Peripheral Nerves ◽  
Nontuberculous Mycobacteria ◽  
Macrophage Polarization ◽  
Mycobacterial Infection ◽  
Host Immune Response ◽  
Giant Cells ◽  
Multinucleated Giant Cells ◽  
Epithelioid Cells ◽  
Pathologic Features

Mycobacteriosis, mostly resulting from Mycobacterium tuberculosis (MTb), nontuberculous mycobacteria (NTM), and Mycobacterium leprae (M. leprae), is the long-standing granulomatous disease that ravages several organs including skin, lung, and peripheral nerves, and it has a spectrum of clinical-pathologic features based on the interaction of bacilli and host immune response. Histiocytes in infectious granulomas mainly consist of infected and uninfected macrophages (Mφs), multinucleated giant cells (MGCs), epithelioid cells (ECs), and foam cells (FCs), which are commonly discovered in lesions in patients with mycobacteriosis. Granuloma Mφ polarization or reprogramming is the crucial appearance of the host immune response to pathogen aggression, which gets a command of endocellular microbe persistence. Herein, we recapitulate the current gaps and challenges during Mφ polarization and the different subpopulations of mycobacteriosis.

scholarly journals TRANSFORMATION OF MONOCYTES IN TISSUE CULTURE INTO MACROPHAGES, EPITHELIOID CELLS, AND MULTINUCLEATED GIANT CELLS

1966 ◽  
Vol 28 (2) ◽  
pp. 303-332 ◽  
Author(s):  
Jerry S. Sutton ◽  
Leon Weiss
Keyword(s):  
Golgi Apparatus ◽  
Plasma Membranes ◽  
Giant Cells ◽  
Progressive Increase ◽  
Multinucleated Giant Cells ◽  
Epithelioid Cells ◽  
Cytoplasmic Filaments ◽  
Monocytes And Macrophages ◽  
Sequential Transformation

The sequential transformation of chicken monocytes into macrophages, epithelioid cells, and multinucleated giant cells in vitro was studied by electron microscopy after fixation and embedment in situ. The following changes occur. In the nucleus, margination of chromatin, evident in monocytes, decreases in later forms. Nucleoli become more complex and nuclear pores increase in number. In cytoplasm, a progressive increase in volume of the ectoplasm and endoplasm occurs in culture. Lysosomes increase in number and size prior to phagocytosis. During phagocytosis (most active from 1 to 3 days of culture) lysosome depletion occurs. Lysosomes are present in greatest number and show maximal structural variation in the epithelioid and young giant cells. Aging giant cells lose lysosomes. All stages possess variably large quantities of rough-surfaced endoplasmic reticulum and free ribosomes. The Golgi apparatus, small in monocytes, increases in size and complexity. Massive accumulations of lysosomes within the Golgi apparatus of macrophages and epithelioid cells suggest that lysosomes originate there. In giant cells, multiple Golgi regions occur, often ringing the nuclei. Monocytes and macrophages have few mitochondria. Mitochondria of epithelioid cells are larger, more numerous, and may have discontinuous outer membranes. Mitochondria are most numerous in giant cells where they increase with age and become polymorphous. Cytoplasmic filaments are approximately 50 to 60 A in diameter and of indeterminate length. They occur both singly and in bundles which touch cytoplasmic vesicles and mitochondria. Few filaments occur in monocytes and macrophages. A large increase in the number of filaments occurs in epithelioid cells, where filaments (90 to 100 A) surround the cytocentrum as a distinctive annular bundle often branching into the cytoplasm. The greatest concentration of filaments occurs in aged giant cells. Pseudopodia are always present. They are short and filiform in monocytes and giant cells, and broad, with abundant micropinocytotic vesicles, in macrophages and epithelioid cells. At every stage, the cell membrane contains dense cuplike structures. These may represent the membranous residue of lysosomes which have discharged to the outside, analogous to merocrine secretion. Contiguous epithelioid cells display elaborate cytoplasmic interdigitation. In places, the plasma membranes break down and epithelioid cells fuse to form giant cells.

CLINICAL AND MORPHOLOGICAL CORRELATIONS AND HISTOPATHOLOGY OF JOINT DAMAGE IN PATIENTS WITH DIFFUSE-TYPE TENOSYNOVIAL GIANT CELL TUMOR

2019 ◽  
Vol 72 (12) ◽  
Author(s):  
Olena O Dyadyk ◽  
Anastasiia Hryhorovska
Keyword(s):  
Giant Cell Tumor ◽  
Giant Cell ◽  
Cell Size ◽  
Giant Cells ◽  
Cell Tumor ◽  
Multinucleated Giant Cells ◽  
Diffuse Type ◽  
Association Coefficient ◽  
Mean Values ◽  
Tenosynovial Giant Cell Tumor

Introduction: Tenosynovial giant cell tumor (TSGCT) (synonym – pigmented villonodular synovitis) – is a rare benign proliferative lesion of the synovial sheath, localized in the joint capsule, bursa or tendon sheath and characterized by locally destructive growth. Depending on the prevalence within the joint elements, the presence of a capsule around the tumor, histophotographic features of cell structure and clinical behavior TSGCT can be divided to localized or diffuse type. The aim of the study was researching of histopathological properties of diffuse-type TSGCT, determine the parameters its morphological indicators and to find out the correlation between these morphological and clinical parameters. Materials and methods: The research material was used biopsy (resect) of pathological lesions from 50 patients who were diagnosed and histologically verified diffuse-type TSGCT. Microscopic examinations of the stained sections and their photo archiving were carried out with use of a Olympus-CX 41 light optical microscope. Group measurable parameters (mean values and Pearson tetrachoric index (association coefficient) were calculated in groups of comparison for morphological and clinical indices of TSGCT. The mean values were compared by Student’s test, P value of ≤0.1 was considered statistically significant. Results:Correlation analysis of indicators that accounted for the pairs of cases «clinic – morphology» revealed the relationships, that had the highest parameters of the association coefficient between such indicators: «presence of villous growths» - «severity of hemosiderosis» (if hypertrophied synovial villi available, with vascular injection and pronounced proliferation of synovial cells, there is also a significant accumulation of hemosiderin pigment); «presence of villous growths» - «type of predominant cellular proliferates» (if cells of TSGCT diffuse type consists of monotonous sheets of stromal cells, with uniform, oval to reniform nuclei, the proliferation of villi in synovial layer is non-distinctive); «presence of nodes» - «kind of stroma» (if nodes predominate, their histological structure is mainly represented by polymorphic clusters of synovitis cells in the form of cells, strands, chains, solid formations, among immature connective tissue with low hyalinosis); «cell size (area, cm²)» - «severity of haemosiderosis» and «cell size (area, cm²)» - «the number of multinucleated giant cells» (there is a pronounced deposition of pigment and accumulation of osteoclast-like multinucleated giant cells type, although usually their number is relatively small compared to the localized type of TSGCT). Conclusions: Morphological parameters, that we have identified, characterize pathological changes in the tissues of TSGCT; careful analysis of the frequency of their occurrence in the different comparison groups made it possible to establish intergroup differences and correlations between individual indicators, which were previously unknown or not obvious. Our study was determine to analyze of incidence rates and correlation relationships, revealed some previously unknown differences and dependencies that are important for understanding the pathogenesis, improvement of diagnosis and prognosis of diffuse-type TSGCT.

Sign in / Sign up

Export Citation Format

Share Document