@article {10419, title = {Genetic profile of patients with early onset inflammatory bowel disease.}, journal = {Gene}, volume = {645}, year = {2018}, month = {2018 Mar 01}, pages = {18-29}, abstract = {

Inflammatory Bowel disease (IBD) is a widespread pathological condition with clinical heterogeneity and with different levels of severity. Although IBD usually occurs in young adults, onset in childhood and infancy are described in patients within the 10th and second year of age. By genome-wide association studies and meta-analysis, several genetic loci have been identified associated with an increased risk of developing IBD in Western populations with variants that may alter the normal mucosal immunity in the gastrointestinal tract. The clinical complexity and the heterogeneity of the IBD phenotype probably reflect the presence of genetic heterogeneity where different genes or combinations of them may be involved, together with environmental factors. We hypothesized that patients with early onset IBD could have either more severe genetic variants in genes associated with IBD or multiple variants in different genes. Under the multifactorial diseases is crucial to consider the small contribution of a single variant in all not only to other small variations in the same gene but also in different genes belonging to the same pathway. We performed direct gene sequencing looking for 94 variations in NOD2, ATG16L1, IL23R, IL10R, IL10 and XIAP genes previously shown as correlated with IBD both in multifactorial and in Mendelian models. All variants identified are known in literature as being associated with IBD except for three variants in the genes NOD2, IL10 and IL10RB that even though present in online databases have never been involved in association studies on IBD patients. Moreover, we coupled genetic variants identification with an accurate "in silico" analysis to verify their predictive impact on the protein structure and function. The in-silico prediction of these variants results as benign therefore even if they exhibit a very low frequency in control population being benign, they cannot be considered pathogenic as monogenic disease but fall within the multifactorial range. The variants identified in our study partially reflect the association data described in the literature but there are no significant differences with the onset of disease (VEO vs EO-IBD).

}, keywords = {Age of Onset, Autophagy-Related Proteins, Child, Child, Preschool, Computer Simulation, Female, Genetic Predisposition to Disease, Genome-Wide Association Study, Humans, Infant, Inflammatory Bowel Diseases, Interleukin-10, Male, Nod2 Signaling Adaptor Protein, Polymorphism, Single Nucleotide, Receptors, Interleukin, Receptors, Interleukin-10, Sequence Analysis, DNA, X-Linked Inhibitor of Apoptosis Protein}, issn = {1879-0038}, doi = {10.1016/j.gene.2017.12.029}, author = {Girardelli, Martina and Basaldella, Federica and Paolera, Sara Della and Vuch, Josef and Tommasini, Alberto and Martelossi, Stefano and Crovella, Sergio and Bianco, Anna Monica} } @article {8315, title = {Putative modifier genes in mevalonate kinase deficiency.}, journal = {Mol Med Rep}, volume = {13}, year = {2016}, month = {2016 Apr}, pages = {3181-9}, abstract = {

Mevalonate kinase deficiency (MKD) is an autosomal recessive auto-inflammatory disease, caused by impairment of the mevalonate pathway. Although the molecular mechanism remains to be elucidated, there is clinical evidence suggesting that other regulatory genes may be involved in determining the phenotype. The identification of novel target genes may explain non-homogeneous genotype-phenotype correlations, and provide evidence in support of the hypothesis that novel regulatory genes predispose or amplify deregulation of the mevalonate pathway in this orphan disease. In the present study, DNA samples were obtained from five patients with MKD, which were then analyzed using whole exome sequencing. A missense variation in the PEX11γ gene was observed in homozygosis in P2, possibly correlating with visual blurring. The UNG rare gene variant was detected in homozygosis in P5, without correlating with a specific clinical phenotype. A number of other variants were found in the five analyzed DNA samples from the MKD patients, however no correlation with the phenotype was established. The results of the presents study suggested that further analysis, using next generation sequencing approaches, is required on a larger sample size of patients with MKD, who share the same MVK mutations and exhibit {\textquoteright}extreme{\textquoteright} clinical phenotypes. As MVK mutations may be associated with MKD, the identification of specific modifier genes may assist in providing an earlier diagnosis.

}, issn = {1791-3004}, doi = {10.3892/mmr.2016.4918}, author = {Marcuzzi, Annalisa and Vozzi, Diego and Girardelli, Martina and Tricarico, Paola Maura and Knowles, Alessandra and Crovella, Sergio and Vuch, Josef and Tommasini, Alberto and Piscianz, Elisa and Bianco, Anna Monica} } @article {8074, title = {Fever tree revisited: From malaria to autoinflammatory diseases.}, journal = {World J Clin Pediatr}, volume = {4}, year = {2015}, month = {2015 Nov 8}, pages = {106-12}, abstract = {

Over the centuries the idea of recurrent fevers has mainly been associated with malaria, but many other fevers, such as typhoid and diphtheria were cause for concern. It is only in recent times, with the more severe forms of fever from infectious origin becoming less frequent or a cause for worry that we started noticing recurrent fevers without any clear infectious cause, being described as having a pathogenesis of autoinflammatory nature. The use of molecular examinations in many cases can allow a diagnosis where the cause is monogenic. In other cases, however the pathogenesis is likely to be multifactorial and the diagnostic-therapeutic approach is strictly clinical. The old fever tree paradigm developed to describe fevers caused by malaria has been revisited here to describe today{\textquoteright}s periodic fevers from the periodic fever adenitis pharyngitis aphthae syndrome to the more rare autoinflammatory diseases. This model may allow us to place cases that are yet to be identified which are likely to be of multifactorial origin.

}, issn = {2219-2808}, doi = {10.5409/wjcp.v4.i4.106}, author = {Pastore, Serena and Vuch, Josef and Bianco, Anna Monica and Taddio, Andrea and Tommasini, Alberto} } @article {7774, title = {Genetic profiling of autoinflammatory disorders in patients with periodic fever: a prospective study.}, journal = {Pediatr Rheumatol Online J}, volume = {13}, year = {2015}, month = {2015}, pages = {11}, abstract = {

BACKGROUND: Periodic fever syndromes (PFS) are an emerging group of autoinflammatory disorders. Clinical overlap exists and multiple genetic analyses may be needed to assist diagnosis. We evaluated the diagnostic value of a 5-gene sequencing panel (5GP) in patients with undiagnosed PFS.

METHODS: Simultaneous double strand Sanger sequencing of MEFV, MVK, TNFRSF1A, NLRP3, NLRP12 genes was performed in 42 patients with unexplained PFS. Clinical features were correlated with genetic results.

RESULTS: None of 42 patients analyzed displayed a causative genotype. However, single or multiple genetic variants of uncertain significance were detected in 24 subjects. Only in 5 subjects a definite diagnosis was made by taking into account both genetic and clinical data (2 TRAPS syndrome; 2 FMF; 1 FCAS). Statistical analysis showed that patients carrying genetic variants in one or more of the five selected genes displayed a significantly lower response to glucocorticoids compared with subjects who had completely negative genetic results.

CONCLUSIONS: The sequencing of multiple genes is of little help in the diagnostics of PFS and can often lead to results of uncertain interpretation, thus the clinically driven sequencing of single genes should remain the recommended approach. However, the presence of single or multiple genetic variants of uncertain significance, even if not allowing any specific diagnosis, correlated with a poorer response to glucocorticoids, possibly indicating a multifactorial subgroup of PFS with differential response to pharmacological treatment.

}, keywords = {Adolescent, Carrier Proteins, Child, Cryopyrin-Associated Periodic Syndromes, Cytoskeletal Proteins, Familial Mediterranean Fever, Female, Fever, Gene Expression Profiling, Genotype, Hereditary Autoinflammatory Diseases, Humans, Intracellular Signaling Peptides and Proteins, Logistic Models, Male, Mutation, Phosphotransferases (Alcohol Group Acceptor), Prospective Studies, Receptors, Tumor Necrosis Factor, Type I, Syndrome}, issn = {1546-0096}, doi = {10.1186/s12969-015-0006-z}, author = {De Pieri, Carlo and Vuch, Josef and De Martino, Eleonora and Bianco, Anna M and Ronfani, Luca and Athanasakis, Emmanouil and Bortot, Barbara and Crovella, Sergio and Taddio, Andrea and Severini, Giovanni M and Tommasini, Alberto} } @article {3610, title = {F402L variant in NLRP12 in subjects with undiagnosed periodic fevers and in healthy controls.}, journal = {Clin Exp Rheumatol}, volume = {32}, year = {2014}, month = {2014 Nov-Dec}, pages = {993-4}, keywords = {Cryopyrin-Associated Periodic Syndromes, Female, Humans, Intracellular Signaling Peptides and Proteins, Male, Mutation}, issn = {0392-856X}, author = {De Pieri, Carlo and Vuch, Josef and Athanasakis, Emmanouil and Severini, Giovanni Maria and Crovella, Sergio and Bianco, Anna Monica and Tommasini, Alberto} } @article {3502, title = {Novel missense mutation in the NOD2 gene in a patient with early onset ulcerative colitis: causal or chance association?}, journal = {Int J Mol Sci}, volume = {15}, year = {2014}, month = {2014}, pages = {3834-41}, abstract = {

Deregulated immune response to gut microflora in genetically predisposed individuals is typical for inflammatory bowel diseases. It is reasonable to assume that genetic association with the disease will be more pronounced in subjects with early onset than adult onset. The nucleotide-binding oligomerization domain containing-2 gene, commonly involved in multifactorial risk of Crohn{\textquoteright}s disease, and interleukin 10 receptor genes, associated with rare forms of early onset inflammatory bowel diseases, were sequenced in an early onset patient. We identified a novel variant in the NOD2 gene (c.2857A > G p.K953E) and two already described missense variants in the IL10RA gene (S159G and G351R). The new NOD2 missense variant was examined in silico with two online bioinformatics tools to predict the potentially deleterious effects of the mutation. Although cumulative effect of these variations in the early onset of the disease can be only hypothesized, we demonstrated that family information and in silico studies can be used to predict association with the disease.

}, keywords = {Age of Onset, Amino Acid Sequence, Base Sequence, Child, Colitis, Ulcerative, Crohn Disease, DNA Mutational Analysis, Genetic Predisposition to Disease, Genotype, Humans, Interleukin-10 Receptor alpha Subunit, Interleukin-10 Receptor beta Subunit, Molecular Sequence Data, Mutation, Missense, Nod2 Signaling Adaptor Protein, Polymorphism, Single Nucleotide, Risk Factors, Sequence Homology, Amino Acid}, issn = {1422-0067}, doi = {10.3390/ijms15033834}, author = {Girardelli, Martina and Vuch, Josef and Tommasini, Alberto and Crovella, Sergio and Bianco, Anna Monica} } @article {1842, title = {Comments to the editor concerning the paper entitled "Preclinical renal cancer chemopreventive efficacy of geraniol by modulation of multiple molecular pathways" Shiekh Tanveer Ahmad et al.}, journal = {Toxicology}, volume = {293}, year = {2012}, month = {2012 Mar 11}, pages = {123-4}, keywords = {Animals, Antineoplastic Agents, Kidney Neoplasms, Male, Signal Transduction, Terpenes}, issn = {1879-3185}, doi = {10.1016/j.tox.2011.12.008}, author = {Vuch, Josef and Marcuzzi, Annalisa and Zanin, Valentina and Crovella, Sergio} } @article {1955, title = {The effect of clodronate on a mevalonate kinase deficiency cellular model.}, journal = {Inflamm Res}, volume = {61}, year = {2012}, month = {2012 Dec}, pages = {1363-7}, abstract = {

BACKGROUND: A potential anti-inflammatory effect of clodronate--an aminobisphosphonate--was described to antagonize the pro-inflammatory effects of the block in the mevalonate pathway, the main feature of a rare auto-inflammatory disease called mevalonate kinase deficiency (MKD).

OBJECTIVE: In this study we evaluated the potential anti-inflammatory effect of clodronate in MKD--a still orphan drug pediatric disease.

METHODS: We studied some biological parameters, nitric oxide production using Griess reagents and programmed cell death by flow cytometry, as common inflammatory parameters in MKD, in the presence of different doses of clodronate (1, 10 and 100 μM).

RESULTS: In our cellular model and in monocytes from patients with MKD, clodronate induced an increase in programed cell death and nitric oxide production in comparison with non-treated cells.

CONCLUSION: Our findings suggest that clodronate does not have an anti-inflammatory effect as previously reported but that it increases the epiphenomena of this pediatric disease.

}, keywords = {Adolescent, Adult, Alendronate, Animals, Anti-Inflammatory Agents, Apoptosis, Cell Line, Cells, Cultured, Child, Clodronic Acid, Female, Humans, Inflammation, Lipopolysaccharides, Male, Mevalonate Kinase Deficiency, Mice, Models, Biological, Monocytes, Nitric Oxide, Young Adult}, issn = {1420-908X}, doi = {10.1007/s00011-012-0537-4}, author = {Zanin, Valentina and Marcuzzi, Annalisa and Piscianz, Elisa and Vuch, Josef and Bianco, Anna Monica and Monasta, Lorenzo and Decorti, Giuliana and Crovella, Sergio} } @article {1943, title = {Lovastatin-induced apoptosis is modulated by geranylgeraniol in a neuroblastoma cell line.}, journal = {Int J Dev Neurosci}, volume = {30}, year = {2012}, month = {2012 Oct}, pages = {451-6}, abstract = {

Mevalonic aciduria (MA), the most severe form of mevalonate kinase deficiency (MKD), is still an orphan drug disease and the pathogenetic mechanisms underlying neuronal dysfunction is still poorly understood. In our study we have investigated the apoptotic mechanism mediated by the exposure of the cultured neuroblastoma cell line, SH-SY5Y, to lovastatin in absence or in presence of the isoprenoid, geranylgeraniol, with the aim of unraveling the pathogenesis of MA. Lovastatin, blocks the mevalonate pathway inhibiting the 3-hydroxy-3-methylglutaryl-CoA reductase (HMG-CR), an enzyme of the mevalonate pathway upstream the mevalonate kinase enzyme, reproducing biochemical features similar to those found in MKD. We demonstrate that apoptosis in neuronal lovastatin treated-cells is induced by the mitochondrial pathway, with caspase-9 as the initiator and caspase-3 as the effector caspase. The presence of geranylgeraniol modulates both the caspase-9 and caspase-3 activity in a dose-dependent way, confirming that this isoprenoid enters the mevalonate pathway, is metabolized and finally is able to by-pass the statin biochemical block reconstituting the mevalonate pathway. According to our findings, it should not be the time course adopted that modulates the apoptotic response but rather the isoprenoid itself. Being aware that our results have been obtained using a biochemical model of MKD, and not cells from patients with the disease, we believe our findings increase the knowledge of MA pathogenesis, and may possibly contribute to the development of novel therapeutic strategies.

}, keywords = {Analysis of Variance, Apoptosis, Caspases, Cell Line, Tumor, Diterpenes, Dose-Response Relationship, Drug, Drug Interactions, Humans, Hydroxymethylglutaryl-CoA Reductase Inhibitors, Lovastatin, Neuroblastoma, Time Factors}, issn = {1873-474X}, doi = {10.1016/j.ijdevneu.2012.06.002}, author = {Marcuzzi, Annalisa and Zanin, Valentina and Piscianz, Elisa and Tricarico, Paola Maura and Vuch, Josef and Girardelli, Martina and Monasta, Lorenzo and Bianco, Anna Monica and Crovella, Sergio} } @article {1761, title = {Letter to the editor: acute effects of intravenous administration of pamidronate in patients with osteoporosis.}, journal = {J Korean Med Sci}, volume = {26}, year = {2011}, month = {2011 Jun}, pages = {848-9; author reply 850}, keywords = {Anti-Inflammatory Agents, Cytokines, Diphosphonates, Humans, Injections, Intravenous, Osteoporosis}, issn = {1598-6357}, doi = {10.3346/jkms.2011.26.6.848}, author = {Marcuzzi, Annalisa and Zanin, Valentina and Vuch, Josef and Pontillo, Alessandra and Crovella, Sergio} }