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Certo F, Altieri R, Cammarata G, Barbagallo G. Role of i-CT, i-US and neuromonitoring in surgical management of brain cavernous malformations and arterio-venous malfromations: a case series. Brain and Spine 2022; 2:101421. [DOI: 10.1016/j.bas.2022.101421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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2
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Altieri R, Certo F, Cammarata G, Garozzo M, Maione M, Di Gregorio S, Barbagallo G. Anatomical distribution of Cancer Stem Cells between Enhancing Nodule and FLAIR hyperintensity in supratentorial Glioblastoma: time to recalibrate the surgical target? Brain and Spine 2022; 2:101269. [DOI: 10.1016/j.bas.2022.101269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Altieri R, Certo F, Garozzo M, Cammarata G, Barbagallo G. Metabolic delineation of IDH1 wild type Glioblastoma anatomy: how to plan surgical strategy. Brain and Spine 2022; 2:101523. [DOI: 10.1016/j.bas.2022.101523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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4
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Certo F, Altieri R, Cammarata G, Barbagallo G. Impact of intraoperative CT scan in brain tumors. Surgical and radiological considerations based on 503 patients. Brain and Spine 2022; 2:101524. [DOI: 10.1016/j.bas.2022.101524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Certo F, Altieri R, Cammarata G, Barbagallo G. Is “Polymorphous low-grade neuroepithelial tumor of the young (PLNTY)” the correct name to indicate a tumor entity that can arise at any age? Brain and Spine 2022; 2:101326. [DOI: 10.1016/j.bas.2022.101326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Barbagallo G, Altieri R, Cammarata G, Montemagno F, Garozzo M, Certo F. FLAIRectomy: a multimodal approach protocol in the surgical treatment of glioblastomas. Results from a single center study. Brain and Spine 2021; 1:100514. [DOI: 10.1016/j.bas.2021.100514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Barbagallo C, Malgioglio GL, Petrone G, Cammarata G. Thermal fatigue life evaluation of SnAgCu solder joints in a multi-chip power module. J Phys : Conf Ser 2017; 841:012014. [DOI: 10.1088/1742-6596/841/1/012014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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McDowell GS, Lemire JM, Paré JF, Cammarata G, Lowery LA, Levin M. Conserved roles for cytoskeletal components in determining laterality. Integr Biol (Camb) 2016; 8:267-86. [PMID: 26928161 DOI: 10.1039/c5ib00281h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Consistently-biased left-right (LR) patterning is required for the proper placement of organs including the heart and viscera. The LR axis is especially fascinating as an example of multi-scale pattern formation, since here chiral events at the subcellular level are integrated and amplified into asymmetric transcriptional cascades and ultimately into the anatomical patterning of the entire body. In contrast to the other two body axes, there is considerable controversy about the earliest mechanisms of embryonic laterality. Many molecular components of asymmetry have not been widely tested among phyla with diverse bodyplans, and it is unknown whether parallel (redundant) pathways may exist that could reverse abnormal asymmetry states at specific checkpoints in development. To address conservation of the early steps of LR patterning, we used the Xenopus laevis (frog) embryo to functionally test a number of protein targets known to direct asymmetry in plants, fruit fly, and rodent. Using the same reagents that randomize asymmetry in Arabidopsis, Drosophila, and mouse embryos, we show that manipulation of the microtubule and actin cytoskeleton immediately post-fertilization, but not later, results in laterality defects in Xenopus embryos. Moreover, we observed organ-specific randomization effects and a striking dissociation of organ situs from effects on the expression of left side control genes, which parallel data from Drosophila and mouse. Remarkably, some early manipulations that disrupt laterality of transcriptional asymmetry determinants can be subsequently "rescued" by the embryo, resulting in normal organ situs. These data reveal the existence of novel corrective mechanisms, demonstrate that asymmetric expression of Nodal is not a definitive marker of laterality, and suggest the existence of amplification pathways that connect early cytoskeletal processes to control of organ situs bypassing Nodal. Counter to alternative models of symmetry breaking during neurulation (via ciliary structures absent in many phyla), our data suggest a widely-conserved role for the cytoskeleton in regulating left-right axis formation immediately after fertilization of the egg. The novel mechanisms that rescue organ situs, even after incorrect expression of genes previously considered to be left-side master regulators, suggest LR patterning as a new context in which to explore multi-scale redundancy and integration of patterning from the subcellular structure to the entire bodyplan.
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Affiliation(s)
- Gary S McDowell
- Biology Department, and Center for Regenerative and Developmental Biology, Tufts University, 200 Boston Avenue, Suite 4600, Medford, MA 02155-4243, USA. and Biology Department, Boston College, Chestnut Hill, MA, USA
| | - Joan M Lemire
- Biology Department, and Center for Regenerative and Developmental Biology, Tufts University, 200 Boston Avenue, Suite 4600, Medford, MA 02155-4243, USA.
| | - Jean-Francois Paré
- Biology Department, and Center for Regenerative and Developmental Biology, Tufts University, 200 Boston Avenue, Suite 4600, Medford, MA 02155-4243, USA.
| | | | | | - Michael Levin
- Biology Department, and Center for Regenerative and Developmental Biology, Tufts University, 200 Boston Avenue, Suite 4600, Medford, MA 02155-4243, USA.
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Cammarata G, Calianese D, Best C, Wan Y. Activation of survival signals in melanoma cells in response to glucose deprivation (766.9). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.766.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Charlie Best
- Biology Providence CollegeProvidenceRIUnited States
| | - Yinsheng Wan
- Biology Providence CollegeProvidenceRIUnited States
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10
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Calianese D, Cammarata G, Best C, Wan Y. Alteration of metabolic activities by modulation of PI3K/AKT and mTOR pathways in ovarian cancer cells (766.10). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.766.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Charles Best
- Biology Providence CollegeProvidenceRIUnited States
| | - Yinsheng Wan
- Biology Providence CollegeProvidenceRIUnited States
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11
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Wan Y, Calianese D, Cammarata G, Best C. Constitutive mTORC1 activation upregulates catalase and SODs in melanoma cells (796.12). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.796.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yinsheng Wan
- Biology Providence CollegeProvidenceRIUnited States
| | | | | | - Charles Best
- Biology Providence CollegeProvidenceRIUnited States
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Marzoli SB, Ciasca P, Curone M, Cammarata G, Melzi L, Criscuoli A, Bussone G, D’Amico D. Quantitative analysis of optic nerve damage in idiopathic intracranial hypertension (IIH) at diagnosis. Neurol Sci 2013; 34 Suppl 1:S143-5. [DOI: 10.1007/s10072-013-1373-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Calianese D, Cammarata G, Brum G, Szulak K, Best C, Higgins K, Wan Y. Abstract 5247: Human melanoma cells resist oxidative stress due to overactive MEK/ERK and AKT/mTOR pathways and overproduction of melanin. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-5247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Melanoma is considered as one of the most aggressive and less treatable cancers. While various models of mechanisms have been proposed, the transformation from tranquil melanocytes to invasive melanoma cells remains an enigma. Alteration of cellular redox status has been suggested to be associated with cellular transformation. We compared primary human melanocytes and melanoma cells and their responses to oxidative stress. Both cells were treated with H2O2 at doses between 5 and 250μM. Microscopic data showed that melanoma cells are more resistant to H2O2 treatment. Western blot and confocal microscopic data showed that in melanoma cells, H2O2 does not induce CRT translocation which is considered as a mechanism through which melanocytes surrender to oxidative stress and induces immunogenic cell death. Furthermore, Western blot analysis showed that melanoma cells express EGFR, responsive to EGF treatment and have constitutive activation of AKT and mTOR, which are all related to better survival. In contrast, in the primary human melanocytes, EGFR expression is almost undetectable. And confocal microscopic data confirm this observation. Treatments of cells with MEK/ERK inhibitor U0126 and PI3K/AKT inhibitor LY294002 attenuates S6 phosphorylation. We also observed that in melanoma cells, but not in melanocytes, low dose (5 to 250μM) of H2O2 induces melanin production that is recognized to protect from further oxidative stress. Collectively, our data suggest that active MEK/ERK and AKT/mTOR pathways and up-regulation of melanin production contribute to the resistance of melanoma cells to oxidative stress and attribute to the aggressiveness of melanoma. Our data provides insights into the understanding of the molecular mechanisms of the transformation from melanocytes to melanoma and support the notion from the most recently published proteomic studies that EGFR remains one of the most important targets for better clinical management of melanoma.
Citation Format: David Calianese, Garrett Cammarata, Gabriella Brum, Kevin Szulak, Charles Best, Katelyn Higgins, Yinsheng Wan. Human melanoma cells resist oxidative stress due to overactive MEK/ERK and AKT/mTOR pathways and overproduction of melanin. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 5247. doi:10.1158/1538-7445.AM2013-5247
Note: This abstract was not presented at the AACR Annual Meeting 2013 because the presenter was unable to attend.
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Kette F, Pellis T, Ristagno G, Cammarata G, Gullo A. Max Harry Weil, a world leading clinician, educator and scientist in the field of critical care. An Italian tribute. Minerva Anestesiol 2011; 77:1232-1233. [PMID: 22134429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Grossi P, Giudice C, Bertoletti I, Cioccarelli G, Brocchi E, Cammarata G, Gelmetti D. Immunohistochemical detection of the p27 capsid protein of caprine arthritis-encephalitis virus (CAEV) in bone-marrow cells of seropositive goats. J Comp Pathol 2005; 133:197-200. [PMID: 15899495 DOI: 10.1016/j.jcpa.2005.01.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2004] [Accepted: 01/03/2005] [Indexed: 11/28/2022]
Abstract
Bone-marrow samples were collected from 48 CAEV-seropositive, symptomless goats (30 kids, 18 adults). The samples were formalin-fixed and processed for histological examination. In addition, all samples were examined immunohistochemically with a monoclonal antibody (1A7) against the p27 capsid protein of maedi-visna virus, an antibody which cross-reacts with the Ca-p27 of CAEV. Samples from 16 goats (10/30 kids, 6/18 adults) showed positive immunolabelling of bone-marrow stromal cells (fibrocytes, endothelial cells and adipocytes) and of scattered macrophages, whereas haematopoietic cells were negative. The detection of viral Ca-p27 protein in bone-marrow fibrocytes was consistent with previous in-vitro studies which indicated that such cells are semi-permissive for CAEV infection. It is speculated that bone-marrow stromal cells represent a viral reservoir in symptomless animals.
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Affiliation(s)
- P Grossi
- Istituto Zooprofilattico Sperimentale Lombardia-Emilia Romagna, Via Celoria 12, 20133 Milano, Italy
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Riccaboni P, Di Giancamillo M, Leonardi L, Di Giancamillo A, Cammarata G. Fusion of the distal sesamoid and distal phalanx in a yearling colt. Vet Rec 2002; 150:143-6. [PMID: 11871668 DOI: 10.1136/vr.150.5.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This paper describes a rare malformation of the distal portion of the left foredigit of a 15-month-old half-bred colt which was severely lame. Radiological, pathological and tomographic studies revealed hypoplasia of the metacarpophalangeal skeleton, absence of the distal sesamoid and deformation of the distal phalanx. Morphological analysis of the lesion and computerised measurement of the width of the articular surface of the distal phalanx suggested an early fusion between the distal sesamoid and distal phalanx.
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Affiliation(s)
- P Riccaboni
- Instituto di Anatomia Patologica Veterinaria e Patologia Aviare, Facoltà di Medicina Veterinaria, Università degli Studi di Milano, Italy
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Feo S, Antona V, Cammarata G, Cavaleri F, Passantino R, Rubino P, Giallongo A. Conserved structure and promoter sequence similarity in the mouse and human genes encoding the zinc finger factor BERF-1/BFCOL1/ZBP-89. Biochem Biophys Res Commun 2001; 283:209-18. [PMID: 11322790 DOI: 10.1006/bbrc.2001.4753] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have characterized the genomic structure of the mouse Zfp148 gene encoding Beta-Enolase Repressor Factor-1 (BERF-1), a Kruppel-like zinc finger protein involved in the transcriptional regulation of several genes, which is also termed ZBP-89, BFCOL1. The cloned Zfp148 gene spans 110 kb of genomic DNA encompassing the 5'-end region, 9 exons, 8 introns, and the 3'-untranslated region. The promoter region displays the typical features of a housekeeping gene: a high G+C content and the absence of canonical TATA and CAAT boxes consistent with the multiple transcription initiation sites determined by primary extension analysis. Computer-assisted search in the human genome database allowed us to determine that the same genomic structure with identical intron-exon organization is conserved in the human homologue ZNF 148. Functional analysis of the 5'-flanking sequence of the mouse gene indicated that the region from nucleotide -205 to +144, relative to the major transcription start site, contains cis-regulatory elements that promote basal expression. Such sequences and the overall promoter architecture are highly conserved in the human gene. Furthermore, we show that the complex transcription pattern of the Zfp148 gene might be due to a combination of alternative splicing and differential polyadenylation sites utilization.
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Affiliation(s)
- S Feo
- Dipartimento di Biologia Cellulare e dello Sviluppo, Centro di Oncobiologia Sperimentale, Viale delle Scienze, Palermo, 90128, Italy.
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Antona V, Cammarata G, De Gregorio L, Dragani TA, Giallongo A, Feo S. The gene encoding the transcriptional repressor BERF-1 maps to a region of conserved synteny on mouse chromosome 16 and human chromosome 3 and a related pseudogene maps to mouse chromosome 8. Cytogenet Cell Genet 2000; 83:90-2. [PMID: 9925940 DOI: 10.1159/000015138] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We have recently identified and characterized a Kruppel-like zinc finger protein (BERF-1), that functions as a repressor of beta enolase gene transcription. By interspecific backcross analysis the gene encoding BERF-1 was localized 4.7 cM proximal to the Mtv6 locus on mouse chromosome 16, and an isolated pseudogene was localized to mouse chromosome 8, about 5.3 cM distal to the D8Mit4 marker. Nucleotide sequence identity and chomosome location indicate that the gene encoding BERF-1 is the mouse homologue (Zfp148) of ZNF148 localized to human chromosome 3q21, a common translocation site in acute myeloid leukemia patients.
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Affiliation(s)
- V Antona
- Dipartimento di Biologia Cellulare e dello Sviluppo, Università di Palermo, Palermo (Italy)
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Gelmetti D, Gibelli L, Brocchi E, Cammarata G. Using a panel of monoclonal antibodies to detect Maedi virus (MV) in chronic pulmonary distress of sheep. J Virol Methods 2000; 88:9-14. [PMID: 10921837 DOI: 10.1016/s0166-0934(00)00155-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A selected panel of six monoclonal antibodies (mAbs) against Maedi-Visna virus (MVV), recognising the core proteins (p27 and p15) and the envelope protein (gp105) of MVV, was tested using different unmasking techniques on paraffin embedded lung samples of a seropositive sheep. Only three mAbs were chosen, according to their strong reactivity. mAbs 1A7, 1B6 and 4B3 were employed in an immunohistochemical trial focused on the diagnosis of the lungs of 26 sheep with progressive pulmonary distress. These mAbs demonstrated MVV in 21 out of 26 cases including lymphoid interstitial pneumonia (LIP) and pulmonary adenomatosis. In only nine cases did all three mAbs react positively with the same sample. The sensitivity of immunohistochemical diagnosis of Maedi pneumonia can be increased by using mAbs 1A7, 4B3 and 1B6 together; that is a panel of mAbs direct against the envelope (gp105) and capsid (p27) viral proteins. The positive signal was focal and confined to the cytoplasm of bronchoalveolar epithelial cells and alveolar-interstitial macrophages. The results suggest that this panel of mAbs is useful to confirm severe LIP lesions such as Maedi pneumonia, to demonstrate Maedi infections in mild LIP, to demonstrate MVV in mixed pulmonary changes, and to investigate the pathogenesis of Maedi-Visna.
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MESH Headings
- Adenomatosis, Pulmonary/virology
- Animals
- Antibodies, Monoclonal/immunology
- Antibodies, Viral/immunology
- Antibody Specificity
- Chronic Disease
- Immunohistochemistry
- Lung/pathology
- Lung/virology
- Paraffin Embedding
- Pneumonia, Progressive Interstitial, of Sheep/diagnosis
- Pneumonia, Progressive Interstitial, of Sheep/pathology
- Pneumonia, Progressive Interstitial, of Sheep/physiopathology
- Pneumonia, Progressive Interstitial, of Sheep/virology
- Sheep
- Viral Core Proteins/analysis
- Viral Core Proteins/immunology
- Viral Envelope Proteins/analysis
- Viral Envelope Proteins/immunology
- Visna-maedi virus/isolation & purification
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Affiliation(s)
- D Gelmetti
- Istituto Zooprofilattico Sperimentale Lombardia-Emilia, Brescia, Italy.
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Cervello M, Sanfilippo R, Isola G, Virruso L, Scalia G, Cammarata G, Gambino R. Phosphorylation-dependent regulation of skeletogenesis in sea urchin micromere-derived cells and embryos. Dev Growth Differ 1999; 41:769-75. [PMID: 10646807 DOI: 10.1046/j.1440-169x.1999.00479.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Sea urchin embryo micromeres when isolated and cultured in vitro differentiate to produce spicules. Although several authors have used this model, almost nothing is known about the signaling pathways responsible for initiating skeletogenesis. In order to investigate the potential involvement of phosphorylation events in spiculogenesis, the effect of inhibitors of protein kinases and phosphatases on skeleton formation was studied. Results obtained using both cultured micromeres and embryos revealed that protein tyrosine kinase and phosphatase inhibitors blocked skeleton formation, but not serine/threonine phosphatase inhibitors. The inhibitors showed a dose-dependent effect and when removed from micromere or embryo culture, spicule formation resumed. Inhibition of tyrosine phosphatases resulted in an increase in the tyrosine phosphorylation level of two major proteins and a modest decrease in the expression of the mRNA coding for type I fibrillar collagen. These findings strongly suggest that tyrosine phosphorylation and dephosphorylation is required for micromere differentiation and for normal skeletogenesis during sea urchin embryo development.
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Affiliation(s)
- M Cervello
- Istituto di Biologia dello Sviluppo, Consiglio Nazionale delle Ricerche, Palermo, Italy.
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Paltrinieri S, Parodi MC, Cammarata G. In vivo diagnosis of feline infectious peritonitis by comparison of protein content, cytology, and direct immunofluorescence test on peritoneal and pleural effusions. J Vet Diagn Invest 1999; 11:358-61. [PMID: 10424653 DOI: 10.1177/104063879901100411] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- S Paltrinieri
- Istituto di Patologia Generale Veterinaria, Milano, Italy
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Cillari E, Milano S, D'Agostino P, Di Bella G, La Rosa M, Barbera C, Ferlazzo V, Cammarata G, Grimaudo S, Tolomeo M, Feo S. Modulation of nitric oxide production by tetracyclines and chemically modified tetracyclines. Adv Dent Res 1998; 12:126-30. [PMID: 9972136 DOI: 10.1177/08959374980120010701] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Chemically modified tetracyclines (CMTs) dose-dependently decreased inducible nitric oxide synthase (iNOS) and, consequently, nitric oxide (NO) formation by the lipopolysaccharide (LPS)-stimulated J774 line. The inhibitory effect was due to a specific reduction in the iNOS protein content in the cells, as attested by Western blot analysis and by the inhibition of iNOS mRNA accumulation. Furthermore, CMTs cause a dose-dependent increase in cell death in the J774 line mediated by the NO-independent apoptotic mechanism.
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Affiliation(s)
- E Cillari
- Institute of General Pathology, University of Palermo, Italy
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Abstract
Haematology, antibody titers and serum protein electrophoresis from 48 cats (34 effusive and 14 noneffusive forms) affected with feline infectious peritonitis (FIP) were studied and compared with those of 20 healthy cats. In the effusive form, antibody titers and protein electrophoresis in the effusions were analyzed. The distribution of the immune cells and of the virus in FIP lesions were also investigated immunohistochemically with the avidin-biotin complex (ABC) method, using antibodies against the FIP virus (FIPV), myelomonocytic (MAC387) and lymphoid (CD3, CD4 and CD8 for T-cells and IgM and IgG for B-cells) antigens. Seropositive animals (antibody titer>1:100) were present among both the FIP infected cats (73%) and the healthy cats (70%). Cats with effusive FIP had neutrophilic leukocytosis (P>0.05), lymphopenia (P<0.01) and eosinopenia (P<0.001). In both effusive and noneffusive forms decreased albumin/globulin ratio (P<0.001) with hypoalbuminemia (P<0.001), hyperglobulinemia (P<0.001) and increased alpha2- (P<0.05), beta- (P<0.05) and gamma-globulins (P<0.001) were found. Hypergammaglobulinemia was not related to the antibody titers, suggesting the presence of other proteins with gamma-motility (e.g. complement fractions). The electrophoretic pattern of the effusions was always similar to that of the corresponding serum. Antibody titers higher than those of the corresponding serum were often detected in the effusions. Immunohistochemical findings were not related to the antibody titers, but they were related to the histological aspect of the lesions. In cellular foci of FIP lesions many virus-infected macrophages and few lymphocytes, mainly CD4+, were found. Extracellular viral and myelomonocytic antigens were also detectable in the foci with intercellular necrosis. Only few FIPV-infected cells were present at the periphery of the larger necrotic foci: in these lesions MAC387+ cells were mainly neutrophils, with many MAC387 macrophages, probably due to their activated state; a small number of lymphocytes, with an increasing percentage of CD8+ cells was present. Lymphocytes were more abundant when cellular foci and FIP-infected macrophages were centered around neoformed vessels. IgM and IgG exposing B-cells were always few and scattered. In conclusion the simultaneous analysis of body fluids and of the cellular composition of the lesions showed a complex immune status, on which type III and type IV hypersensitivity could coexist.
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Affiliation(s)
- S Paltrinieri
- Istituto di Patologia Generale Veterinaria, Milan, Italy.
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D'Agostino P, Arcoleo F, Barbera C, Di Bella G, La Rosa M, Misiano G, Milano S, Brai M, Cammarata G, Feo S, Cillari E. Tetracycline inhibits the nitric oxide synthase activity induced by endotoxin in cultured murine macrophages. Eur J Pharmacol 1998; 346:283-90. [PMID: 9652371 DOI: 10.1016/s0014-2999(98)00046-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Here we investigate the effects of tetracycline base and of a semi-synthetic tetracycline derivative, doxycycline, on the induction of inducible nitric oxide synthase and, hence, on the production of nitric oxide (NO) by lipopolysaccharide in J774 macrophage cultured in vitro. The treatment of J774 line with tetracycline base (6.25-250 microM) or doxycycline (5-50 microM) dose-dependently decreased the lipopolysaccharide-stimulated (1 microg/ml) inducible NO synthase activity and, consequently, nitrite formation. For instance, the inhibition was 70% for tetracycline base at 250 microM and 68% for doxycycline at 50 microM. The inhibitory effect of tetracyclines was due neither to a reduction in the viability of the cells, studied as colorimetric 3-[4,5-dimethylthiazol-2yl]-2,5-diphenyltetrazolium bromide (MTT) reduction assay, nor to an indiscriminate inhibition of total protein synthesis, but to a specific decrease in inducible NO synthase protein content in the cells, as attested by the significant reduction of the expression of inducible NO synthase, assayed by sodium-dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) and Western blot. However, no effect of tetracyclines on inducible NO synthase mRNA accumulation could be demonstrated in lipopolysaccharide-stimulated macrophage line, suggesting that the inhibitory effect of tetracyclines on NO synthesis involves post-transcriptional events. The reduction in lipopolysaccharide-stimulated nitrite accumulation produced by tetracyclines was significantly less when they were applied 6 h after lipopolysaccharide and absent 12 h after lipopolysaccharide, indicating that tetracyclines modify an early event in inducible NO synthase activation operating after mRNA transcription. The findings presented in this study indicate that the modulation of NO synthesis is another possible pathway by which tetracyclines may function as anti-inflammatory compounds.
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Affiliation(s)
- P D'Agostino
- Institute of General Pathology, University of Palermo, Italy
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25
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Paltrinieri S, Cammarata Parodi M, Cammarata G, Mambretti M. Type IV hypersensitivity in the pathogenesis of FIPV-induced lesions. Zentralbl Veterinarmed B 1998; 45:151-9. [PMID: 9588109 DOI: 10.1111/j.1439-0450.1998.tb00778.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In focal lesions of feline infectious peritonitis (FIP), the cells involved in the delayed-type hypersensitivity were identified in formalin-fixed paraffin-embedded and frozen samples taken from 35 affected cats. The clinical diagnosis of FIP was confirmed by necropsy, histology and direct immunofluorescence against the coronaviruses on cryostatic sections. The immune cells were detected immunohistochemically by the Avidin-Biotin-Complex (ABC) method using either polyclonal antibodies against lymphoid antigens (CD3) or monoclonal antibodies against lymphoid (PAN-T, CD4, CD8) and myeloid antigens (MAC387). Better identification of T cells and macrophages was found on formalin-fixed paraffin-embedded sections than on cryostatic ones, while T lymphocyte subpopulations could be differentiated only in cryostatic sections. Type IV hypersensitivity was detected in focal feline infectious peritonitis virus (FIPV)-induced lesions from progressive activation of T lymphocytes, mainly CD4+, and the presence of granulocytes and macrophages. The FIPV-induced lesions could be studied as examples of granulomas caused by unconventional antigens, such as viruses or immune complexes.
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Affiliation(s)
- S Paltrinieri
- Istituto di Patologia Generale Veterinaria, Milan, Italy
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26
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27
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Abstract
Several reports have shown that HLA-B8,DR3 positive subjects may display some changes in immune parameters when compared with HLA-B8,DR3 negative ones and are prone to develop several immunological diseases. In the present study we have analysed the proliferative response to phytohaemagglutin (PHA) in HLA-typed healthy subjects. A twin method was also employed to assess the role of genetic and environmental factors in the regulation of the response to the mitogen. It was not possible to demonstrate any difference in proliferative response to optimal doses of PHA between groups of subjects carrying or not carrying the HLA-B8,DR3 phenotype. When suboptimal responses were studied, however, the results showed that lymphocyte responses were significantly decreased in HLA-B8,DR3 positive subjects compared with the negative ones. Moreover, the experiments performed with twins demonstrated that environmental factors were more important than genetic factors in the proliferative response to mitogen. The fact that the HLA-B8,DR3 phenotype affects the suboptimal response to PHA although environmental factors are more important than genetic factors in the response to the mitogen seems of some interest. However, these results could be consistent with the high incidence of autoimmune disorders among HLA-B8,DR3 positive individuals.
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Affiliation(s)
- M A Modica
- Servizio di Immunologia Tissutale, Universita' di Palermo, Italy
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28
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Abstract
The HLA frequencies of 50 Sicilian patients affected with acute lymphoblastic leukaemia (ALL) were examined. The frequency of Cw4 antigen was significantly increased in patients. Thus results obtained in our homogeneous population confirm in part previous reports suggesting that Cw4-related genetic factors might be involved in the susceptibility to aetiological or pathogenetic mechanisms which play a role in some haematological malignancies.
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Affiliation(s)
- C Caruso
- Servizio di Immunologia Tissutale, Università di Palermo, Italia
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29
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Cammarata G, Faravelli G, Mantelli F. [Anatomicopathological studies of chronic dietary hypervitaminosis A in the cat]. SCHWEIZ ARCH TIERH 1983; 125:71-85. [PMID: 6844906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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30
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Poli G, Mandelli G, Ceccarelli A, Caldora C, Cammarata G, Finazzi M. Transmissible gastroenteritis of swine: intestinal and hepatic lesions attributed to changes in and mobilization of enteric microflora. Zentralbl Veterinarmed B 1982; 29:794-804. [PMID: 7164673 DOI: 10.1111/j.1439-0450.1982.tb01200.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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31
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Finazzi M, Cammarata G. Histopathologic Observations on Sertoli Cell Tumors in Dog. Tumori 1981; 67:391-8. [PMID: 7324171 DOI: 10.1177/030089168106700501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Thirty-three cases of Sertoli cell tumor, occurring in dogs of different breeds and ages, were studied histologically. Ectopic testes showed a particularly high tendency to develop the tumor. Metastases were not detected in regularly autopsied dogs nor reported or later ascertained for the bioptic consignments. According to Nielsen and Lein's classification (1974) our findings were divided as follows: 27 intratubular Sertoli cell tumors, 19 with stromal invasion and 8 without invasion; 2 diffuse tumors; 4 multiple primary tumors (3 Sertoli-seminoma cell tumor and 1 Sertoli-Leydig cell tumor). The above classification is discussed and proposed tentatively for revision.
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