4.3 Article

Cultured human cells release soluble gamma-glutamyltransferase complexes corresponding to the plasma b-GGT

期刊

BIOMARKERS
卷 14, 期 7, 页码 486-492

出版社

TAYLOR & FRANCIS LTD
DOI: 10.3109/13547500903093757

关键词

gamma-Glutamyltransferase activity; gamma-glutamyltransferase fractions; gel filtration chromatography; gamma-glutamyltransferase release

向作者/读者索取更多资源

Serum gamma-glutamyltransferase (GGT) is thought to derive from the liver, but its values predict morbidity and mortality for several diseases, such as cardiac infarction, stroke, diabetes, renal failure and cancer. We assessed total GGT and its fractions in the culture supernatants of human cell lines (melanoma, prostate cancer, bronchial epithelium) by gel filtration chromatography. We also compared the GGT elution profile in plasma and the corresponding very-low-density lipoprotein (VLDL) fraction. All the cell lines tested released soluble GGT whose activity increased in parallel with the cell growth. Released GGT presented a molecular weight of 2000 kDa, identical to the b-GGT fraction of human plasma and corresponding to that of VLDL. But ultracentrifugation studies showed that b-GGT had a higher density than VLDL. The b-GGT present in human plasma can be produced by tissues other than the liver, thus explaining the increase of serum GGT observed in diseases of other organs.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.3
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Cardiac & Cardiovascular Systems

Myocardial salvage is increased after sympathetic renal denervation in a pig model of acute infarction

Luigi Emilio Pastormerlo, Silvia Burchielli, Marco Ciardetti, Giovanni Donato Aquaro, Chrysantos Grigoratos, Vincenzo Castiglione, Angela Pucci, Maria Franzini, Assuero Giorgetti, Paolo Marzullo, Eleonora Benelli, Silvia Masotti, Veronica Musetti, Fabio Bernini, Sergio Berti, Claudio Passino, Michele Emdin

Summary: This study investigated the potential role of sympathetic renal denervation (RD) in limiting myocardial damage and remodeling immediately after acute myocardial infarction (AMI) in pigs. The results showed that RD performed after AMI led to smaller necrotic areas, improved myocardial salvage index, higher cardiac output, and lower LV end diastolic volume compared to the control group. RD also resulted in reduced sympathetic activation and better cardiac function, indicating its potential for improving outcomes following AMI.

CLINICAL RESEARCH IN CARDIOLOGY (2021)

Article Biochemical Research Methods

Sensitivity and reproducibility enhancement in enzyme immunosorbent assays based on half fragment antibodies

Vanessa Susini, Laura Caponi, Veronica Lucia Rossi, Antonio Sanesi, Nadia Romiti, Aldo Paolicchi, Maria Franzini

Summary: The study found that the free sulfhydryl groups in the hinge region of monovalent antibody fragments (rIgG) play a crucial role in the orientation of antibodies on immunosensors. Both chemical reduction and orientation affect the signal enhancement, with rIgG generally showing greater signal enhancement capacity.

ANALYTICAL BIOCHEMISTRY (2021)

Article Environmental Sciences

Improving the Reprocessing Quality of Flexible Thermolabile Endoscopes: How to Learn from Mistakes

Beatrice Casini, Benedetta Tuvo, Emanuele Marciano, Giuliana Del Magro, Giulia Gemignani, Grazia Luchini, Maria Luisa Cristina, Anna Laura Costa, Guglielmo Arzilli, Michele Totaro, Angelo Baggiani, Gaetano Privitera

Summary: The study highlighted significant issues with non-compliance in the reprocessing of endoscopes, particularly in relation to high-concern organisms. However, improvements were seen through implementing corrective actions and regular microbiological surveillance. The key focus was on sampling the internal channels of duodenoscopes.

INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH (2021)

Article Environmental Sciences

Experimental Evaluation of Aerosol Production after Dental Ultrasonic Instrumentation: An Analysis on Fine Particulate Matter Perturbation

Filippo Graziani, Rossana Izzetti, Lisa Lardani, Michele Totaro, Angelo Baggiani

Summary: The study on the dynamics of aerosol particles during dental procedures found that submicron aerosol particles slightly increased after instrumentation but slowly decreased afterwards, while larger particles did not show significant increases.

INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH (2021)

Review Infectious Diseases

Screening for antimicrobial-resistant Gram-negative bacteria in hospitalised patients, and risk of progression from colonisation to infection: Systematic review

Guglielmo Arzilli, Giuditta Scardina, Virginia Casigliani, Davide Petri, Andrea Porretta, Marco Moi, Ersilia Lucenteforte, Jordi Rello, Pierluigi Lopalco, Angelo Baggiani, Gaetano Pierpaolo Privitera, Lara Tavoschi

Summary: This study investigated screening practices on admission to hospital wards and the risk of developing infection from colonisation. It found that the burden of antimicrobial-resistant Gram-negative bacteria (AMR-GNB) colonisation and the risk of progression to infection vary significantly across regions, pathogens, and time in hospitals.

JOURNAL OF INFECTION (2022)

Article Medicine, General & Internal

Big and Free Fractions of Gamma-Glutamyltransferase: New Diagnostic Biomarkers for Malignant Mesothelioma?

Rudy Foddis, Maria Franzini, Alessandra Bonotti, Riccardo Marino, Roberto Silvestri, Poupak Fallahi, Dante Chiappino, Michele Emdin, Aldo Paolicchi, Alfonso Cristaudo

Summary: This study evaluated the role of specific GGT fractional enzymatic activity patterns in the diagnosis of MPM and found a specific profile of GGT fractions activity significantly associated with MPM. Combining GGT activity with serum SMRP levels improved the diagnostic accuracy.

DIAGNOSTICS (2022)

Review Cardiac & Cardiovascular Systems

RNA-targeting and gene editing therapies for transthyretin amyloidosis

Alberto Aimo, Vincenzo Castiglione, Claudio Rapezzi, Maria Franzini, Giorgia Panichella, Giuseppe Vergaro, Julian Gillmore, Marianna Fontana, Claudio Passino, Michele Emdin

Summary: This review discusses the strategies for TTR silencing in the treatment of ATTR amyloidosis, including small interfering RNAs, antisense oligonucleotides, and gene editing approaches.

NATURE REVIEWS CARDIOLOGY (2022)

Article Virology

Myocardial Infarction Following COVID-19 Vaccine Administration: Post Hoc, Ergo Propter Hoc?

Arianna Baronti, Francesco Gentile, Alice Chiara Manetti, Andrea Scatena, Silvia Pellegrini, Angela Pucci, Maria Franzini, Vincenzo Castiglione, Aniello Maiese, Alberto Giannoni, Mauro Pistello, Michele Emdin, Giovanni Donato Aquaro, Marco Di Paolo

Summary: This study presents five cases of sudden death secondary to myocardial infarction (MI) closely related to COVID-19 vaccination. Pathological analysis and genetic testing revealed that the patients carried pro-thrombotic mutations, suggesting a possible link between COVID-19 vaccination, pro-thrombotic genotypes, and acute cardiovascular events that requires further investigation.

VIRUSES-BASEL (2022)

Article Genetics & Heredity

Old and New Systemic Immune-Inflammation Indexes Are Associated with Overall Survival of Glioblastoma Patients Treated with Radio-Chemotherapy

Francesco Pasqualetti, Celeste Giampietro, Nicola Montemurro, Noemi Giannini, Giovanni Gadducci, Paola Orlandi, Eleonora Natali, Paolo Chiarugi, Alessandra Gonnelli, Martina Cantarella, Cristian Scatena, Giuseppe Nicolo Fanelli, Antonio Giuseppe Naccarato, Paolo Perrini, Gaetano Liberti, Riccardo Morganti, Maria Franzini, Aldo Paolicchi, Giovanni Pellegrini, Guido Bocci, Fabiola Paiar

Summary: This study found that systemic immunity and inflammation indexes (SI) may serve as potential biomarkers for survival in patients with glioblastoma. The results of univariate and multivariate regression analyses showed that certain indexes had a statistically significant impact on overall survival.
Review Biochemistry & Molecular Biology

The Journey of Human Transthyretin: Synthesis, Structure Stability, and Catabolism

Chiara Sanguinetti, Marianna Minniti, Vanessa Susini, Laura Caponi, Giorgia Panichella, Vincenzo Castiglione, Alberto Aimo, Michele Emdin, Giuseppe Vergaro, Maria Franzini

Summary: This article provides an overview of the biological life cycle of transthyretin (TTR), including its physiological metabolism and the role of mutations and physiological ligands in its stability. Understanding these mechanisms is crucial for a better comprehension of the pathogenesis of TTR amyloidosis.

BIOMEDICINES (2022)

Article Immunology

A method to obtain purified free light chain monomers and dimers from urine samples of patients with multiple myeloma

Laura Caponi, Alice Botti, Nadia Romiti, Aldo Paolicchi, Maria Franzini

Summary: Antibody light chains are synthesized in excess by plasma cells and can be secreted into biological fluids in different forms. Structural differences between monomers and dimers may affect their biological functions and pathogenicity. A simple preparatory procedure allows for the purification of FLC monomers and dimers from urine samples of patients with plasma cell disorders.

IMMUNOLOGIC RESEARCH (2022)

Review Pharmacology & Pharmacy

Transthyretin Stabilizers and Seeding Inhibitors as Therapies for Amyloid Transthyretin Cardiomyopathy

Paolo Morfino, Alberto Aimo, Giuseppe Vergaro, Chiara Sanguinetti, Vincenzo Castiglione, Maria Franzini, Marco Alfonso Perrone, Michele Emdin

Summary: Transthyretin (TTR) amyloid cardiomyopathy (ATTR-CM) is a cause of heart failure characterized by misfolded TTR monomers deposited as amyloid fibrils in the myocardium. Standard treatment with TTR-stabilizing ligands may not be effective in advanced disease. Amyloid seeding, a self-propagating process, may further accelerate amyloid aggregation. Inhibition of amyloidogenesis combined with anti-seeding peptides and alternative strategies, such as TTR silencers and immunological amyloid disruptors, show promising results.

PHARMACEUTICS (2023)

Article Biochemistry & Molecular Biology

Binding of Gamma-Glutamyl Transferase to TLR4 Signalling Allows Tissue Factor Activation in Monocytes

Chiara Sanguinetti, Valentina Scalise, Tommaso Neri, Alessandro Celi, Vanessa Susini, Maria Franzini, Roberto Pedrinelli

Summary: Gamma-glutamyl transferase (GGT) plays a role in the progression of atherosclerosis by promoting the generation of reactive oxygen species. It can also induce tissue factor expression, independently of its enzymatic activity. In this study, it was found that GGT-induced tissue factor stimulation is mediated by binding to Toll-like receptor 4, which is expressed on monocytes and colocalizes with GGT activity in atherosclerotic plaques.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2022)

Letter Public, Environmental & Occupational Health

Analysis of costs for pandemic management in a tertiary-care hospital in Italy: An investment for a more resilient structure

Angelo Baggiani, Silvia Briani, Grazia Luchini, Mauro Giraldi, Jacopo Fernandez, Carla Collecchi, Matteo Filippi, Lucia Trillini, Domenica Mamone, Maria Carola Martino, Antonella Ciucci, Michele Cristofano, Antonella De Vito, Gabriella Pellegrini, Grazia Valori, Guglielmo Arzilli, Daniele Sironi, Tommaso Mariotti, Francesca Papini, Virginia Casigliani, Giuditta Scardina, Giacomo Visi, Beatrice Casini, Andrea Porretta, Michele Totaro, Gaetano Privitera, Carlo Milli

INFECTION CONTROL AND HOSPITAL EPIDEMIOLOGY (2021)

暂无数据