@article {10837, title = {Pre-eclampsia affects procalcitonin production in placental tissue.}, journal = {Am J Reprod Immunol}, volume = {79}, year = {2018}, month = {2018 04}, pages = {e12823}, abstract = {

PROBLEM: Procalcitonin (PCT) is the prohormone of calcitonin which is usually released from neuroendocrine cells of the thyroid gland (parafollicular) and the lungs (K cells). PCT is synthesized by almost all cell types and tissues, including monocytes and parenchymal tissue, upon LPS stimulation. To date, there is no evidence for PCT expression in the placenta both in physiological and pathological conditions.

METHOD: Circulating and placental PCT levels were analysed in pre-eclamptic (PE) and control patients. Placental cells and macrophages (PBDM), stimulated with PE sera, were analysed for PCT expression. The effect of anti-TNF-α antibody was analysed.

RESULTS: Higher PCT levels were detected in PE sera and in PE placentae compared to healthy women. PE trophoblasts showed increased PCT expression compared to those isolated from healthy placentae. PE sera induced an upregulation of PCT production in macrophages and placental cells. The treatment of PBDM with PE sera in the presence of anti-TNF-α completely abrogated the effect induced by pathologic sera.

CONCLUSION: Trophoblast cells are the main producer of PCT in PE placentae. TNF-α, in association with other circulating factors present in PE sera, upregulates PCT production in macrophages and normal placental cells, thus contributing to the observed increased in circulating PCT in PE sera.

}, keywords = {Adult, Calcitonin, Cohort Studies, Female, Humans, Macrophages, Placenta, Pre-Eclampsia, Pregnancy, Trophoblasts, Tumor Necrosis Factor-alpha, Up-Regulation, Young Adult}, issn = {1600-0897}, doi = {10.1111/aji.12823}, author = {Agostinis, Chiara and Rami, Damiano and Zacchi, Paola and Bossi, Fleur and Stampalija, Tamara and Mangogna, Alessandro and Amadio, Leonardo and Vidergar, Romana and Vecchi Brumatti, Liza and Ricci, Giuseppe and Celeghini, Claudio and Radillo, Oriano and Sargent, Ian and Bulla, Roberta} } @article {10433, title = {A transcriptomics study of hereditary angioedema attacks.}, journal = {J Allergy Clin Immunol}, volume = {142}, year = {2018}, month = {2018 Sep}, pages = {883-891}, abstract = {

BACKGROUND: Hereditary angioedema (HAE) caused by C1-inhibitor deficiency is a lifelong illness characterized by recurrent acute attacks of localized skin or mucosal edema. Activation of the kallikrein/bradykinin pathway at the endothelial cell level has a relevant pathogenetic role in acute HAE attacks. Moreover, other pathways are involved given the variable clinical expression of the disease in different patients.

OBJECTIVE: We sought to explore the involvement of other putative genes in edema formation.

METHODS: We performed a PBMC microarray gene expression analysis on RNA isolated from patients with HAE during an acute attack and compared them with the transcriptomic profile of the same patients in the remission phase.

RESULTS: Gene expression analysis identified 23 genes significantly modulated during acute attacks that are involved primarily in the natural killer cell signaling and leukocyte extravasation signaling pathways. Gene set enrichment analysis showed a significant activation of relevant biological processes, such as response to external stimuli and protein processing (q~<~0.05), suggesting involvement of PBMCs during acute HAE attacks. Upregulation of 2 genes, those encoding adrenomedullin and cellular receptor for urokinase plasminogen activator (uPAR), which occurs during an acute attack, was confirmed in PBMCs of 20 additional patients with HAE by using real-time PCR. Finally, in~vitro studies demonstrated the involvement of uPAR in the generation of bradykinin and endothelial leakage.

CONCLUSIONS: Our study demonstrates the increase in levels of adrenomedullin and uPAR in PBMCs during an acute HAE attack. Activation of these genes usually involved in regulation of vascular tone and in inflammatory response might have a pathogenic role by amplifying bradykinin production and edema formation in patients with HAE.

}, issn = {1097-6825}, doi = {10.1016/j.jaci.2018.03.016}, author = {Castellano, Giuseppe and Divella, Chiara and Sallustio, Fabio and Montinaro, Vincenzo and Curci, Claudia and Zanichelli, Andrea and Bonanni, Erika and Suffritti, Chiara and Caccia, Sonia and Bossi, Fleur and Gallone, Anna and Schena, Francesco Paolo and Gesualdo, Loreto and Cicardi, Marco} } @article {10527, title = {Association between thyroid hormones and TRAIL.}, journal = {Clin Biochem}, volume = {50}, year = {2017}, month = {2017 Nov}, pages = {972-976}, abstract = {

INTRODUCTION: Recent studies suggest that a circulating protein called TRAIL (TNF-related apoptosis-inducing ligand) might have a role in the regulation of body weight and metabolism. Interestingly, thyroid hormones seem to increase TRAIL tissue expression. This study aimed at evaluating whether overt thyroid disorders affected circulating TRAIL levels.

METHODS: TRAIL circulating levels were measured in euthyroid, hyperthyroid, and hypothyroid patients before and after thyroid function normalization. Univariate and multivariate analyses were performed to evaluate the correlation between thyroid hormones and TRAIL. Then, the stimulatory effect of both triiodothyronine (T3) and thyroxine (T4) on TRAIL was evaluated in vitro on peripheral blood mononuclear cells.

RESULTS: Circulating levels of TRAIL significantly increased in hyperthyroid and decreased in hypothyroid patients as compared to controls. Once thyroid function was restored, TRAIL levels normalized. There was an independent association between TRAIL and both fT3 and fT4. Consistent with these findings, T3 and T4 stimulated TRAIL release in vitro.

CONCLUSION: Here we show that thyroid hormones are associated with TRAIL expression in vivo and stimulate TRAIL expression in vitro. Given the overlap between the metabolic effects of thyroid hormones and TRAIL, this work sheds light on the possibility that TRAIL might be one of the molecules mediating thyroid hormones peripheral effects.

}, keywords = {Aged, Female, Gene Expression Regulation, Humans, Hyperthyroidism, Hypothyroidism, Leukocytes, Mononuclear, Male, Middle Aged, Thyroxine, TNF-Related Apoptosis-Inducing Ligand, Triiodothyronine}, issn = {1873-2933}, doi = {10.1016/j.clinbiochem.2017.05.011}, author = {Bernardi, Stella and Bossi, Fleur and Toffoli, Barbara and Giudici, Fabiola and Bramante, Alessandra and Furlanis, Giulia and Stenner, Elisabetta and Secchiero, Paola and Zauli, Giorgio and Carretta, Renzo and Fabris, Bruno} } @article {10482, title = {Circulating osteoprotegerin is associated with chronic kidney disease in hypertensive patients.}, journal = {BMC Nephrol}, volume = {18}, year = {2017}, month = {2017 Jul 06}, pages = {219}, abstract = {

BACKGROUND: Osteoprotegerin (OPG) is a glycoprotein that plays an important regulatory role in the skeletal, vascular, and immune system. It has been shown that OPG predicts chronic kidney disease (CKD) in diabetic patients. We hypothesized that OPG could be a risk marker of CKD development also in non-diabetic hypertensive patients.

METHODS: A case-control study was carried out to measure circulating OPG levels in 42 hypertensive patients with CKD and in 141 hypertensive patients without CKD. A potential relationship between OPG and the presence of CKD was investigated and a receiver-operating characteristic (ROC) curve was designed thereafter to identify a cut-off value of OPG that best explained the presence of CKD. Secondly, to evaluate whether OPG increase could affect the kidney, 18 C57BL/6J mice were randomized to be treated with saline or recombinant OPG every 3~weeks for 12~weeks.

RESULTS: Circulating OPG levels were significantly higher in hypertensive patients with CKD, and there was a significant inverse association between OPG and renal function, that was independent from other variables. ROC analysis showed that OPG levels had a high statistically predictive value on CKD in hypertensive patients, which was greater than that of hypertension. The OPG best cut-off value associated with CKD was 1109.19~ng/L. In the experimental study, OPG delivery significantly increased the gene expression of pro-inflammatory and pro-fibrotic mediators, as well as the glomerular nitrosylation of proteins.

CONCLUSIONS: This study shows that OPG is associated with CKD in hypertensive patients, where it might have a higher predictive value than that of hypertension for CKD development. Secondly, we found that OPG delivery significantly increased the expression of molecular pathways involved in kidney damage. Further longitudinal studies are needed not only to evaluate whether OPG predicts CKD development but also to clarify whether OPG should be considered a risk factor for CKD.

}, keywords = {Aged, Animals, Biomarkers, Case-Control Studies, Female, Follow-Up Studies, Humans, Hypertension, Male, Mice, Mice, Inbred C57BL, Middle Aged, Osteoprotegerin, Random Allocation, Renal Insufficiency, Chronic}, issn = {1471-2369}, doi = {10.1186/s12882-017-0625-3}, author = {Bernardi, Stella and Toffoli, Barbara and Bossi, Fleur and Candido, Riccardo and Stenner, Elisabetta and Carretta, Renzo and Barbone, Fabio and Fabris, Bruno} } @article {8056, title = {RelB activation in anti-inflammatory decidual endothelial cells: a master plan to avoid pregnancy failure?}, journal = {Sci Rep}, volume = {5}, year = {2015}, month = {2015}, pages = {14847}, abstract = {

It is known that excessive inflammation at fetal-maternal interface is a key contributor in a compromised pregnancy. Female genital tract is constantly in contact with microorganisms and several strategies must be adopted to avoid pregnancy failure. Decidual endothelial cells (DECs) lining decidual microvascular vessels are the first cells that interact with pro-inflammatory stimuli released into the environment by microorganisms derived from gestational tissues or systemic circulation. Here, we show that DECs are hypo-responsive to LPS stimulation in terms of IL-6, CXCL8 and CCL2 production. Our results demonstrate that DECs express low levels of TLR4 and are characterized by a strong constitutive activation of the non-canonical NF-κB pathway and a low responsiveness of the canonical pathway to LPS. In conclusion, DECs show a unique hypo-responsive phenotype to the pro-inflammatory stimulus LPS in order to control the inflammatory response at feto-maternal interface.

}, issn = {2045-2322}, doi = {10.1038/srep14847}, author = {Masat, Elisa and Gasparini, Chiara and Agostinis, Chiara and Bossi, Fleur and Radillo, Oriano and De Seta, Francesco and Tamassia, Nicola and Cassatella, Marco A and Bulla, Roberta} } @article {7730, title = {TRAIL modulates the immune system and protects against the development of diabetes.}, journal = {J Immunol Res}, volume = {2015}, year = {2015}, month = {2015}, pages = {680749}, abstract = {

TRAIL or tumor necrosis factor (TNF) related apoptosis-inducing ligand is a member of the TNF superfamily of proteins, whose best characterized function is the induction of apoptosis in tumor, infected, or transformed cells through activation of specific receptors. In nontransformed cells, however, the actions of TRAIL are less well characterized. Recent studies suggest that TRAIL may be implicated in the development and progression of diabetes. Here we review TRAIL biological actions, its effects on the immune system, and how and to what extent it has been shown to protect against diabetes.

}, keywords = {Animals, Diabetes Mellitus, Humans, Immune System, Receptors, TNF-Related Apoptosis-Inducing Ligand, Signal Transduction}, issn = {2314-7156}, doi = {10.1155/2015/680749}, author = {Bossi, Fleur and Bernardi, Stella and Zauli, Giorgio and Secchiero, Paola and Fabris, Bruno} } @article {3561, title = {C1q as a unique player in angiogenesis with therapeutic implication in wound healing.}, journal = {Proc Natl Acad Sci U S A}, volume = {111}, year = {2014}, month = {2014 Mar 18}, pages = {4209-14}, abstract = {

We have previously shown that C1q is expressed on endothelial cells (ECs) of newly formed decidual tissue. Here we demonstrate that C1q is deposited in wound-healing skin in the absence of C4 and C3 and that C1q mRNA is locally expressed as revealed by real-time PCR and in situ hybridization. C1q was found to induce permeability of the EC monolayer, to stimulate EC proliferation and migration, and to promote tube formation and sprouting of new vessels in a rat aortic ring assay. Using a murine model of wound healing we observed that vessel formation was defective in C1qa(-/-) mice and was restored to normal after local application of C1q. The mean vessel density of wound-healing tissue and the healed wound area were significantly increased in C1q-treated rats. On the basis of these results we suggest that C1q may represent a valuable therapeutic agent that can be used to treat chronic ulcers or other pathological conditions in which angiogenesis is impaired, such as myocardial ischemia.

}, keywords = {Animals, Cell Proliferation, Complement C1q, DNA Primers, Endothelial Cells, Enzyme-Linked Immunosorbent Assay, Human Umbilical Vein Endothelial Cells, Humans, Immunoblotting, Immunohistochemistry, In Situ Hybridization, Mice, Mice, Inbred C57BL, Mice, Knockout, Neovascularization, Physiologic, Rats, Rats, Wistar, Real-Time Polymerase Chain Reaction, Wound Healing}, issn = {1091-6490}, doi = {10.1073/pnas.1311968111}, author = {Bossi, Fleur and Tripodo, Claudio and Rizzi, Lucia and Bulla, Roberta and Agostinis, Chiara and Guarnotta, Carla and Munaut, Carine and Baldassarre, Gustavo and Papa, Giovanni and Zorzet, Sonia and Ghebrehiwet, Berhane and Ling, Guang Sheng and Botto, Marina and Tedesco, Francesco} } @article {1846, title = {MBL interferes with endovascular trophoblast invasion in pre-eclampsia.}, journal = {Clin Dev Immunol}, volume = {2012}, year = {2012}, month = {2012}, pages = {484321}, abstract = {

The spiral arteries undergo physiologic changes during pregnancy, and the failure of this process may lead to a spectrum of pregnancy disorders, including pre-eclampsia. Our recent data indicate that decidual endothelial cells (DECs), covering the inner side of the spiral arteries, acquire the ability to synthesize C1q, which acts as a link between endovascular trophoblast and DECs favouring the process of vascular remodelling. In this study, we have shown that sera obtained from pre-eclamptic patients strongly inhibit the interaction between extravillous trophoblast (EVT) and DECs, preventing endovascular invasion of trophoblast cells. We further demonstrated that mannose-binding lectin (MBL), one of the factor increased in pre-eclamptic patient sera, strongly inhibits the interaction of EVT with C1q interfering with the process of EVT adhesion to and migration through DECs. These data suggest that the increased level of MBL in pre-eclampsia may contribute to the failure of the endovascular invasion of trophoblast cells.

}, keywords = {Cell Communication, Decidua, Endothelial Cells, Female, Humans, Mannose-Binding Lectin, Pre-Eclampsia, Pregnancy, Transendothelial and Transepithelial Migration, Trophoblasts}, issn = {1740-2530}, doi = {10.1155/2012/484321}, author = {Agostinis, Chiara and Bossi, Fleur and Masat, Elisa and Radillo, Oriano and Tonon, Maddalena and De Seta, Francesco and Tedesco, Francesco and Bulla, Roberta} } @article {1615, title = {An alternative role of C1q in cell migration and tissue remodeling: contribution to trophoblast invasion and placental development.}, journal = {J Immunol}, volume = {185}, year = {2010}, month = {2010 Oct 1}, pages = {4420-9}, abstract = {

Fetal trophoblast cells invading the decidua in the early phase of pregnancy establish complex interaction with the maternal extracellular matrix. We discovered that C1q was widely distributed in human decidual stroma in the absence of C4 and C3 and was actively synthesized by migrating extravillous trophoblasts. The cells expressed the messages for the three chains of C1q and secreted this complement component that interacted with the proteins of the decidual extracellular matrix. Solid phase-bound C1q promoted trophoblast adhesion and migration, and cell binding to C1q resulted in activation of ERK1/2 MAPKs. Ab inhibition experiments showed that the receptors for the globular head of C1q/p33 and α(4)β(1) integrin were both involved in this process and were colocalized on the cell surface following binding of C1q to trophoblasts. We also found that C1q(-/-) mice manifested increased frequency of fetal resorption, reduced fetal weight, and smaller litter sizes compared with wild-type mice. C1q deficiency was associated with impaired labyrinth development and decidual vessel remodeling. Collectively, these data suggest that C1q plays an important role in promoting trophoblast invasion of decidua and that defective local production of C1q may be involved in pregnancy disorders, such as pre-eclampsia, characterized by poor trophoblast invasion.

}, keywords = {Animals, Cell Adhesion, Chemotaxis, Leukocyte, Complement C1q, Female, Humans, Immunoblotting, Immunohistochemistry, Immunoprecipitation, Mice, Mice, Inbred C57BL, Microscopy, Confocal, Placentation, Pre-Eclampsia, Pregnancy, Reverse Transcriptase Polymerase Chain Reaction, Trophoblasts}, issn = {1550-6606}, doi = {10.4049/jimmunol.0903215}, author = {Agostinis, Chiara and Bulla, Roberta and Tripodo, Claudio and Gismondi, Angela and Stabile, Helena and Bossi, Fleur and Guarnotta, Carla and Garlanda, Cecilia and De Seta, Francesco and Spessotto, Paola and Santoni, Angela and Ghebrehiwet, Berhane and Girardi, Guillermina and Tedesco, Francesco} }