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40 Results Found

  • Article
  • Open Access
8 Citations
5,270 Views
17 Pages

Disruption of Structural Disulfides of Coagulation FXIII-B Subunit; Functional Implications for a Rare Bleeding Disorder

  • Sneha Singh,
  • Mohammad Suhail Akhter,
  • Johannes Dodt,
  • Amit Sharma,
  • Senthilvelrajan Kaniyappan,
  • Hamideh Yadegari,
  • Vytautas Ivaskevicius,
  • Johannes Oldenburg and
  • Arijit Biswas

Congenital FXIII deficiency is a rare bleeding disorder in which mutations are detected in F13A1 and F13B genes that express the two subunits of coagulation FXIII, the catalytic FXIII-A, and protective FXIII-B. Mutations in FXIII-B subunit are consid...

  • Article
  • Open Access
15 Citations
2,929 Views
9 Pages

31 July 2020

Unexpected intraoperative bleeding is associated with a reduced availability of crosslinking capacity (provided through factor XIII (FXIII)) per unit of generated thrombin. Furthermore, FXIII deficiency and thrombocytopenia (but not fibrinogen defici...

  • Article
  • Open Access
13 Citations
4,194 Views
12 Pages

Identification of Potential Novel Interacting Partners for Coagulation Factor XIII B (FXIII-B) Subunit, a Protein Associated with a Rare Bleeding Disorder

  • Sneha Singh,
  • Mohammad Suhail Akhter,
  • Johannes Dodt,
  • Peter Volkers,
  • Andreas Reuter,
  • Christoph Reinhart,
  • Christoph Krettler,
  • Johannes Oldenburg and
  • Arijit Biswas

Coagulation factor XIII (FXIII) is a plasma-circulating heterotetrameric pro-transglutaminase complex that is composed of two catalytic FXIII-A and two protective/regulatory FXIII-B subunits. FXIII acts by forming covalent cross-links within a prefor...

  • Article
  • Open Access
2 Citations
2,691 Views
12 Pages

Cellular FXIII in Human Macrophage-Derived Foam Cells

  • Laura Somodi,
  • Emőke Horváth,
  • Helga Bárdos,
  • Barbara Baráth,
  • Dávid Pethő,
  • Éva Katona,
  • József Balla,
  • Nicola J. Mutch and
  • László Muszbek

Macrophages express the A subunit of coagulation factor XIII (FXIII-A), a transglutaminase which cross-links proteins through Nε-(γ-L-glutamyl)-L-lysyl iso-peptide bonds. Macrophages are major cellular constituents of the atheroscleroti...

  • Article
  • Open Access
3 Citations
3,166 Views
15 Pages

The Effect of Activated FXIII, a Transglutaminase, on Vascular Smooth Muscle Cells

  • Réka Bogáti,
  • Éva Katona,
  • Amir H. Shemirani,
  • Enikő Balogh,
  • Helga Bárdos,
  • Viktória Jeney and
  • László Muszbek

Plasma factor XIII (pFXIII) is a heterotetramer of FXIII-A and FXIII-B subunits. The cellular form (cFXIII), a dimer of FXIII-A, is present in a number of cell types. Activated FXIII (FXIIIa), a transglutaminase, plays an important role in clot stabi...

  • Article
  • Open Access
17 Citations
7,964 Views
17 Pages

Factor XIII B Subunit Polymorphisms and the Risk of Coronary Artery Disease

  • Zoltán A. Mezei,
  • Zsuzsanna Bereczky,
  • Éva Katona,
  • Réka Gindele,
  • Emília Balogh,
  • Szilvia Fiatal,
  • László Balogh,
  • István Czuriga,
  • Róza Ádány and
  • István Édes
  • + 1 author

6 January 2015

The aim of the case-control study was to explore the effect of coagulation factor XIII (FXIII) B subunit (FXIII-B) polymorphisms on the risk of coronary artery disease, and on FXIII levels. In the study, 687 patients admitted for coronary angiography...

  • Case Report
  • Open Access
2 Citations
737 Views
2 Pages

Use of Catridecacog in a Patient with Severe Factor XIII Deficiency Undergoing Surgery

  • Gianluca Sottilotta,
  • Francesca Luise,
  • Vincenzo Oriana,
  • Angela Piromalli,
  • Rosa Santacroce and
  • Alessandra Di Lelio

19 February 2019

Despite many articles regarding the antihemorrhagic treatment and prophylaxis, there is a lack of experience about how to best conduct major surgical procedures in patients with congenital factor XIII (FXIII) deficiency. Here we report a case of surg...

  • Article
  • Open Access
12 Citations
3,853 Views
17 Pages

The Structure of Blood Coagulation Factor XIII Is Adapted to Oxidation

  • Alexandra Vasilyeva,
  • Lyubov Yurina,
  • Alexander Shchegolikhin,
  • Maria Indeykina,
  • Anna Bugrova,
  • Alexey Kononikhin,
  • Eugene Nikolaev and
  • Mark Rosenfeld

17 June 2020

The blood coagulation factor XIII (FXIII) plays a critical role in supporting coagulation and fibrinolysis due to both the covalent crosslinking of fibrin polymers, rendering them resistant to plasmin lysis, and the crosslinking of fibrin to proteins...

  • Article
  • Open Access
378 Views
13 Pages

Protective Effect of Factor XIII Intron-K G Allele on Subclinical Vascular Disease

  • Barbara Cogoi,
  • Regina Esze,
  • Sándor Somodi,
  • Amir H. Shemirani,
  • Zsuzsanna Bereczky,
  • László Muszbek,
  • György Paragh,
  • Mónika Katkó and
  • Miklós Káplár

22 October 2025

Carotid artery intima–media thickness (cIMT), a pre-clinical vascular change that accompanies atherosclerosis is considered as a cardiovascular risk factor. Coagulation factor XIII (FXIII) stabilizes the fibrin clot and increases its resistance...

  • Review
  • Open Access
60 Citations
9,813 Views
21 Pages

Factor XIII-A: An Indispensable “Factor” in Haemostasis and Wound Healing

  • Fahad S. M. Alshehri,
  • Claire S. Whyte and
  • Nicola J. Mutch

Factor XIII (FXIII) is a transglutaminase enzyme that catalyses the formation of ε-(γ-glutamyl)lysyl isopeptide bonds into protein substrates. The plasma form, FXIIIA2B2, has an established function in haemostasis, with fibrin being its principal sub...

  • Feature Paper
  • Article
  • Open Access
2 Citations
2,500 Views
11 Pages

Recurrent Early Pregnancy Loss and Congenital Thrombophilia: A Prospective Study

  • Asma Basha,
  • Yasmine Alkhatib,
  • Tamara Tashtoush,
  • Maysa Yousef,
  • Laila Oweidi,
  • Mohammad Alkhatib,
  • Sally Al-Aqrabawi,
  • Yazun Jarrar and
  • Abdalla Awidi

15 November 2024

Background/Objectives: This study aims to investigate the role of congenital single nucleotide thrombophilia in young females with early recurrent pregnancy loss (RPL). Methods: We studied 120 pregnant females with RPL and 80 matched females as a con...

  • Systematic Review
  • Open Access
14 Citations
4,413 Views
14 Pages

11 April 2019

Background and aims: Numerous studies examined the association between factors FV, FVII, FXII, and FXIII-A gene polymorphisms and ischemic stroke, but conclusive evidence is yet to be obtained. Thus, this meta-analysis aimed to investigate the novel...

  • Article
  • Open Access
3 Citations
2,511 Views
16 Pages

Coagulation Factor XIII Val34Leu Polymorphism in the Prediction of Premature Cardiovascular Events—The Results of Two Meta-Analyses

  • Beata Sarecka-Hujar,
  • Danuta Łoboda,
  • Elżbieta Paradowska-Nowakowska and
  • Krzysztof S. Gołba

15 June 2022

Background: Polymorphisms within the gene that encodes for coagulation factor XIII (FXIII) have been suggested to be involved in the pathogeneses of ischemic stroke (IS) and myocardial infarction (MI). The Val34Leu polymorphism is one of the most com...

  • Article
  • Open Access
2 Citations
3,130 Views
13 Pages

Transglutaminases Are Active in Perivascular Adipose Tissue

  • Alexis N. Orr,
  • Janice M. Thompson,
  • Janae M. Lyttle and
  • Stephanie W. Watts

Transglutaminases (TGs) are crosslinking enzymes best known for their vascular remodeling in hypertension. They require calcium to form an isopeptide bond, connecting a glutamine to a protein bound lysine residue or a free amine donor such as norepin...

  • Article
  • Open Access
11 Citations
3,502 Views
17 Pages

Exploring Diverse Coagulation Factor XIII Subunit Expression Datasets: A Bioinformatic Analysis

  • Muhammad Ahmer Jamil,
  • Sneha Singh,
  • Osman El-Maarri,
  • Johannes Oldenburg and
  • Arijit Biswas

Coagulation factor XIII (FXIII) circulates in plasma as a pro-transglutaminase heterotetrameric complex (FXIIIA2B2), which upon activation by thrombin and calcium covalently crosslinks preformed fibrin polymers. The heterotetrameric complex is compos...

  • Review
  • Open Access
4 Citations
4,309 Views
19 Pages

18 March 2022

Factor XIII (FXIII) deficiency is a rare but serious coagulopathy. FXIII is critical in blood coagulation, and FXIII deficiencies can lead to uncontrolled or spontaneous bleeding. FXIII deficiencies can be congenital or acquired; acquired FXIII defic...

  • Article
  • Open Access
6 Citations
4,342 Views
17 Pages

Cellular Factor XIII, a Transglutaminase in Human Corneal Keratocytes

  • Zsuzsanna Z. Orosz,
  • Helga Bárdos,
  • Amir H. Shemirani,
  • Ildikó Beke Debreceni,
  • Riitta Lassila,
  • Antti S. Riikonen,
  • Johanna A. Kremer Hovinga,
  • Theo G. Seiler,
  • Hendrika A. van Dorland and
  • Verena Schroeder
  • + 7 authors

27 November 2019

Cellular factor XIII (cFXIII, FXIII-A2), a transglutaminase, has been demonstrated in a few cell types. Its main function is to cross-link proteins by isopeptide bonds. Here, we investigated the presence of cFXIII in cells of human cornea. Tissue sec...

  • Article
  • Open Access
5 Citations
2,601 Views
15 Pages

Factor XIII Measurement and Substitution in Trauma Patients after Admission to an Intensive Care Unit

  • Moritz Katzensteiner,
  • Martin Ponschab,
  • Herbert Schöchl,
  • Daniel Oberladstätter,
  • Johannes Zipperle,
  • Marcin Osuchowski and
  • Christoph J. Schlimp

19 July 2022

Trauma patients admitted to an intensive care unit (ICU) may potentially experience a deficiency of coagulation factor thirteen (FXIII). In this retrospective cohort study conducted at a specialized trauma center, ICU patients were studied to determi...

  • Article
  • Open Access
17 Citations
5,867 Views
19 Pages

The Plasma Factor XIII Heterotetrameric Complex Structure: Unexpected Unequal Pairing within a Symmetric Complex

  • Sneha Singh,
  • Alexis Nazabal,
  • Senthilvelrajan Kaniyappan,
  • Jean-Luc Pellequer,
  • Alisa S. Wolberg,
  • Diana Imhof,
  • Johannes Oldenburg and
  • Arijit Biswas

21 November 2019

Factor XIII (FXIII) is a predominant determinant of clot stability, strength, and composition. Plasma FXIII circulates as a pro-transglutaminase with two catalytic A subunits and two carrier-protective B subunits in a heterotetramer (FXIII-A2B2). FXI...

  • Review
  • Open Access
20 Citations
5,313 Views
11 Pages

Factor XIII and Fibrin Clot Properties in Acute Venous Thromboembolism

  • Michał Ząbczyk,
  • Joanna Natorska and
  • Anetta Undas

5 February 2021

Coagulation factor XIII (FXIII) is converted by thrombin into its active form, FXIIIa, which crosslinks fibrin fibers, rendering clots more stable and resistant to degradation. FXIII affects fibrin clot structure and function leading to a more prothr...

  • Article
  • Open Access
17 Citations
3,893 Views
15 Pages

Monocytes Expose Factor XIII-A and Stabilize Thrombi against Fibrinolytic Degradation

  • Fahad S. M. Alshehri,
  • Claire S. Whyte,
  • Ahmet Tuncay,
  • Maria-Louise Williams,
  • Heather M. Wilson and
  • Nicola J. Mutch

Factor XIII (FXIII) is a transglutaminase that promotes thrombus stability by cross-linking fibrin. The cellular form, a homodimer of the A subunits, denoted FXIII-A, lacks a classical signal peptide for its release; however, we have shown that it is...

  • Article
  • Open Access
3 Citations
2,984 Views
17 Pages

Expression Patterns of Coagulation Factor XIII Subunit A on Leukemic Lymphoblasts Correlate with Clinical Outcome and Genetic Subtypes in Childhood B-cell Progenitor Acute Lymphoblastic Leukemia

  • Bettina Kárai,
  • Katalin Gyurina,
  • Anikó Ujfalusi,
  • Łukasz Sędek,
  • Gábor Barna,
  • Pál Jáksó,
  • Peter Svec,
  • Eszter Szánthó,
  • Attila Csaba Nagy and
  • Judit Müller
  • + 16 authors

13 August 2020

Background: Based on previous retrospective results, we investigated the association of coagulation FXIII subunit A (FXIII-A) expression pattern on survival and correlations with known prognostic factors of B-cell progenitor (BCP) childhood acute lym...

  • Article
  • Open Access
9 Citations
3,923 Views
14 Pages

Clinical Validation of an Automated Fluorogenic Factor XIII Activity Assay Based on Isopeptidase Activity

  • Martina Leitner,
  • Christian Büchold,
  • Ralf Pasternack,
  • Nikolaus B. Binder and
  • Gary W. Moore

20 January 2021

Hereditary factor XIII (FXIII) deficiency is a rare autosomal bleeding disorder which can cause life-threatening bleeding. Acquired deficiency can be immune-mediated or due to increased consumption or reduced synthesis. The most commonly used screeni...

  • Article
  • Open Access
3 Citations
2,541 Views
12 Pages

Combined Administration of Fibrinogen and Factor XIII Concentrate Does Not Improve Dilutional Coagulopathy Superiorly Than Sole Fibrinogen Therapy: Results of an In-Vitro Thrombelastographic Study

  • Emmanuel Schneck,
  • Marcus Muelich,
  • Melanie Markmann,
  • Fabian Edinger,
  • Nina Cooper,
  • Annette Moeller,
  • Gregor Bein,
  • Andreas Hecker,
  • Christian Koch and
  • Michael Sander
  • + 1 author

12 May 2021

The early administration of fibrinogen has gained wide acceptance for the treatment of major hemorrhage, whereas the substitution of coagulation factor XIII (FXIII) is only supported by a low level of evidence. This study aimed to answer the question...

  • Article
  • Open Access
9 Citations
3,187 Views
15 Pages

Terminal Phase Components of the Clotting Cascade in Patients with End-Stage Renal Disease Undergoing Hemodiafiltration or Hemodialysis Treatment

  • Krisztina Pénzes,
  • Boglárka Hurják,
  • Éva Katona,
  • Gergely Becs,
  • József Balla and
  • László Muszbek

10 November 2020

Hemostasis disorder in patients with end-stage renal disease (ESRD) is frequently associated with bleeding diathesis but it may also manifest in thrombotic complications. Analysis of individual coagulation and fibrinolytic factors may shed light on t...

  • Review
  • Open Access
22 Citations
6,860 Views
14 Pages

Factor XIII-A in Diseases: Role Beyond Blood Coagulation

  • Katalin Dull,
  • Fruzsina Fazekas and
  • Dániel Törőcsik

1 February 2021

Multidisciplinary research from the last few decades has revealed that Factor XIII subunit A (FXIII-A) is not only involved in blood coagulation, but may have roles in various diseases. Here, we aim to summarize data from studies involving patients w...

  • Article
  • Open Access
9 Citations
4,059 Views
13 Pages

Incorporation of α2-Plasmin Inhibitor into Fibrin Clots and Its Association with the Clinical Outcome of Acute Ischemic Stroke Patients

  • Zsuzsa Bagoly,
  • Barbara Baráth,
  • Rita Orbán-Kálmándi,
  • István Szegedi,
  • Réka Bogáti,
  • Ferenc Sarkady,
  • László Csiba and
  • Éva Katona

25 February 2021

Cross-linking of α2-plasmin inhibitor (α2-PI) to fibrin by activated factor XIII (FXIIIa) is essential for the inhibition of fibrinolysis. Little is known about the factors modifying α2-PI incorporation into the fibrin clot and whether the extent of...

  • Article
  • Open Access
6 Citations
3,634 Views
15 Pages

Functional and Structural Characterization of Nucleic Acid Ligands That Bind to Activated Coagulation Factor XIII

  • Nasim Shahidi Hamedani,
  • Arijit Biswas,
  • Oliver Rudan,
  • Rosa Tönges,
  • Carlotta Meyring,
  • Fabian Tolle,
  • Günter Mayer,
  • Johannes Oldenburg,
  • Jens Müller and
  • Bernd Pötzsch

10 February 2021

Coagulation factor XIII (FXIII) is a protransglutaminase which plays an important role in clot stabilization and composition by cross-linking the α- and γ-chains of fibrin and increasing the resistance of the clot to mechanical and proteolytic challe...

  • Article
  • Open Access
7 Citations
6,032 Views
16 Pages

Effect of Factor XIII-A G185T Polymorphism on Visual Prognosis after Photodynamic Therapy for Neovascular Macular Degeneration

  • Francesco Parmeggiani,
  • Ciro Costagliola,
  • Francesco Semeraro,
  • Mario R Romano,
  • Michele Rinaldi,
  • Carla Enrica Gallenga,
  • Maria Luisa Serino,
  • Carlo Incorvaia,
  • Sergio D’Angelo and
  • Katia De Nadai
  • + 4 authors

20 August 2015

Macular degenerations represent leading causes of central blindness or low vision in developed countries. Most of these severe visual disabilities are due to age-related macular degeneration (AMD) and pathologic myopia (PM), both of which are frequen...

  • Article
  • Open Access
7 Citations
3,047 Views
15 Pages

Functionalizing Fibrin Hydrogels with Thermally Responsive Oligonucleotide Tethers for On-Demand Delivery

  • Chase S. Linsley,
  • Kevin Sung,
  • Cameron White,
  • Cara A. Abecunas,
  • Bill J. Tawil and
  • Benjamin M. Wu

There are a limited number of stimuli-responsive biomaterials that are capable of delivering customizable dosages of a therapeutic at a specific location and time. This is especially true in tissue engineering and regenerative medicine applications,...

  • Article
  • Open Access
1,920 Views
19 Pages

Localization of Hemostasis Elements in Aspirated Coronary Thrombi at Different Stages of Evolution

  • Dóra Pituk,
  • László Balogh,
  • Emőke Horváth,
  • Zoltán Hegyi,
  • Barbara Baráth,
  • Réka Bogáti,
  • Péter Szűcs,
  • Zoltán Papp,
  • Éva Katona and
  • Zsuzsanna Bereczky

1 November 2024

The structure of aspirated coronary thrombus in ST-segment elevation myocardial infarction (STEMI) is still being studied. Our aims were to characterize coronary thrombi of different ages, focusing on the appearance of activated protein C (APC/PC) an...

  • Article
  • Open Access
5 Citations
3,922 Views
18 Pages

Advantages of Fibrin Polymerization Method without the Use of Exogenous Thrombin for Vascular Tissue Engineering Applications

  • Vera G. Matveeva,
  • Evgenia A. Senokosova,
  • Viktoriia V. Sevostianova,
  • Mariam Yu. Khanova,
  • Tatiana V. Glushkova,
  • Tatiana N. Akentieva,
  • Larisa V. Antonova and
  • Leonid S. Barbarash

Fibrin is widely used in vascular tissue engineering. Typically, fibrin polymerization is initiated by adding exogenous thrombin. In this study, we proposed a protocol for the preparation of completely autologous fibrin without the use of endogenous...

  • Article
  • Open Access
12 Citations
5,412 Views
14 Pages

The Efficacy of Fibrinogen Concentrates in Relation to Cryoprecipitate in Restoring Clot Integrity and Stability against Lysis

  • Claire S. Whyte,
  • Akriti Rastogi,
  • Ellis Ferguson,
  • Michela Donnarumma and
  • Nicola J. Mutch

Loss of fibrinogen is a feature of trauma-induced coagulopathy (TIC), and restoring this clotting factor is protective against hemorrhages. We compared the efficacy of cryoprecipitate, and of the fibrinogen concentrates RiaSTAP® and FibCLOT®...

  • Article
  • Open Access
10 Citations
3,814 Views
10 Pages

Venous Malformations and Blood Coagulation in Children

  • Johanna Aronniemi,
  • Satu Långström,
  • Katariina A. Mattila,
  • Anne Mäkipernaa,
  • Päivi Salminen,
  • Anne Pitkäranta,
  • Johanna Pekkola and
  • Riitta Lassila

20 April 2021

Introduction: Venous malformations (VMs) are congenital low-flow lesions with a wide spectrum of clinical manifestations. An increasing number of studies link VMs to coagulation abnormalities, especially to elevated D-dimer and decreased fibrinogen....

  • Article
  • Open Access
9 Citations
2,731 Views
9 Pages

Molecular Analysis of Prothrombotic Gene Variants in Patients with Acute Ischemic Stroke and with Transient Ischemic Attack

  • Gustavo Cernera,
  • Marika Comegna,
  • Monica Gelzo,
  • Marcella Savoia,
  • Dario Bruzzese,
  • Mauro Mormile,
  • Federica Zarrilli,
  • Felice Amato,
  • Pierpaolo Di Micco and
  • Giuseppe Castaldo

17 July 2021

Background and objectives: ischemic stroke (IS) is among the most frequent causes of death worldwide; thus, it is of paramount relevance to know predisposing factors that may help to identify and treat the high-risk subjects. Materials and Methods:we...

  • Article
  • Open Access
26 Citations
4,821 Views
20 Pages

Transglutaminases and Obesity in Humans: Association of F13A1 to Adipocyte Hypertrophy and Adipose Tissue Immune Response

  • Mari T. Kaartinen,
  • Mansi Arora,
  • Sini Heinonen,
  • Aila Rissanen,
  • Jaakko Kaprio and
  • Kirsi H. Pietiläinen

5 November 2020

Transglutaminases TG2 and FXIII-A have recently been linked to adipose tissue biology and obesity, however, human studies for TG family members in adipocytes have not been conducted. In this study, we investigated the association of TGM family member...

  • Review
  • Open Access
6 Citations
5,099 Views
14 Pages

Anticoagulation Management in V-V ECMO Patients: A Multidisciplinary Pragmatic Protocol

  • Ana Bento Rodrigues,
  • Anabela Rodrigues,
  • Catarina Jacinto Correia,
  • Gustavo Nobre Jesus and
  • João Miguel Ribeiro

26 January 2024

(1) Background: Extracorporeal membrane oxygenation (ECMO) is a complex procedure affecting both the risk of thrombosis and bleeding. High-quality data to personalize anticoagulation management in ECMO are lacking, resulting in a high variability in...

  • Article
  • Open Access
834 Views
16 Pages

Effect of Alpha2-Plasmin Inhibitor C-Terminal Heterogeneity on Clot Lysis and Clot Structure

  • Réka Bogáti,
  • Barbara Baráth,
  • Dóra Pituk,
  • Rita Orbán-Kálmándi,
  • Péter Szűcs,
  • Zoltán Hegyi,
  • Zsuzsanna Bereczky,
  • Zsuzsa Bagoly and
  • Éva Katona

5 August 2025

Alpha2-plasmin inhibitor (α2PI) has a heterogeneous structure due to proteolytic cleavages in the circulation. The C-terminally cleaved form loses the plasminogen binding site and is, therefore, a slow plasmin inhibitor (NPB-α2PI). As FXI...

  • Article
  • Open Access
11 Citations
2,792 Views
11 Pages

Molecular Analysis of Prothrombotic Gene Variants in Venous Thrombosis: A Potential Role for Sex and Thrombotic Localization

  • Gustavo Cernera,
  • Alessandro Di Minno,
  • Felice Amato,
  • Ausilia Elce,
  • Renato Liguori,
  • Dario Bruzzese,
  • Antonella Miriam Di Lullo,
  • Giuseppe Castaldo,
  • Federica Zarrilli and
  • Marika Comegna

2 April 2020

Background: Requests to test for thrombophilia in the clinical context are often not evidence-based. Aim: To define the role of a series of prothrombotic gene variants in a large population of patients with different venous thromboembolic diseases. M...

  • Article
  • Open Access
3 Citations
2,456 Views
15 Pages

24 August 2023

Osteoclasts are multinucleated, bone-resorbing giant cells derived from monocyte–macrophage cell lines. Increased bone resorption results in loss of bone mass and osteoporosis. Osteoclast and bone marrow macrophages have been shown to express t...