1
|
Spaziani E, Di Filippo A, Picchio M, De Angelis F, Corazza S, Narilli F, Cimino G. [The age factor in bilateral hydrocele diagnosis secondary to a primitive testis lymphoma: case report, diagnosis and therapy]. Clin Ter 2012; 163:e23-e26. [PMID: 22362240] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Primitive NHL represents 9% of testis tumours and the 85% is diagnosed in patient older thant 60 years old. Usually pain and a testis mass are the main manifestations. The Authors report the case of a 82 years-old man with bilateral hydrocele causing severe alteration in the deambulation. The cytology did not show blood cells or neoplastic cell in the FNAB. The US showed a complete modification in the testis. The patient underwent to surgery intervention of vaginalis tunic eversion and resection with the aim of control the symptoms. The histology on multiple biopsy of testis and epidydims bilaterally showed a large B-cell lymphoma. The patient was treated with 6 chemotheray cycles (Rituximab, Vincristine, Cyclophosphamide, Prednisone). Bilateral hydrocele is a rare clinical presentation of testis NHL. In this patient, blood and neoplastic cell absence in the cytology made difficult the differential diagnosis between inflammatory pathology and neoplasia. Hystopathologic study and immunologic pattern can make a certain diagnosis.
Collapse
MESH Headings
- Age of Onset
- Aged, 80 and over
- Antibodies, Monoclonal, Murine-Derived/administration & dosage
- Antineoplastic Combined Chemotherapy Protocols/administration & dosage
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Biopsy, Fine-Needle
- Combined Modality Therapy
- Cyclophosphamide/administration & dosage
- Diagnosis, Differential
- Doxorubicin/administration & dosage
- Humans
- Lymphoma, Large B-Cell, Diffuse/complications
- Lymphoma, Large B-Cell, Diffuse/diagnosis
- Lymphoma, Large B-Cell, Diffuse/drug therapy
- Lymphoma, Large B-Cell, Diffuse/pathology
- Lymphoma, Large B-Cell, Diffuse/surgery
- Male
- Orchitis/diagnosis
- Prednisone/administration & dosage
- Rituximab
- Testicular Hydrocele/diagnostic imaging
- Testicular Hydrocele/etiology
- Testicular Hydrocele/pathology
- Testicular Hydrocele/surgery
- Testicular Neoplasms/complications
- Testicular Neoplasms/diagnosis
- Testicular Neoplasms/drug therapy
- Testicular Neoplasms/pathology
- Testicular Neoplasms/surgery
- Ultrasonography
- Vincristine/administration & dosage
Collapse
Affiliation(s)
- E Spaziani
- Dipartimento di Scienze Medico-Chirurgiche e Biotecnologie, Sapienza Università di Roma, Polo Pontino, Ospedale A. Fiorini, Terracina, Latina, Italia
| | | | | | | | | | | | | |
Collapse
|
2
|
Veitinger S, Veitinger T, Cainarca S, Fluegge D, Engelhardt CH, Lohmer S, Hatt H, Corazza S, Spehr J, Neuhaus EM, Spehr M. Purinergic signalling mobilizes mitochondrial Ca²⁺ in mouse Sertoli cells. J Physiol 2011; 589:5033-55. [PMID: 21859825 DOI: 10.1113/jphysiol.2011.216309] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Intimate bidirectional communication between Sertoli cells and developing germ cells ensures the integrity and efficiency of spermatogenesis. Yet, a conceptual mechanistic understanding of the physiological principles that underlie Sertoli cell autocrine and paracrine signalling is lacking. Here, we characterize a purinergic Ca(2+) signalling network in immature mouse Sertoli cells that consists of both P2X2 and P2Y2 purinoceptor subtypes, the endoplasmic reticulum and, notably, mitochondria. By combining a transgenic mouse model with a dedicated bioluminescence imaging device, we describe a novel method to monitor mitochondrial Ca(2+) mobilization in Sertoli cells at subcellular spatial and millisecond temporal resolution. Our data identify mitochondria as essential components of the Sertoli cell signalling 'toolkit' that control the shape of purinergic Ca(2+) responses, and probably several other paracrine Ca(2+)-dependent signals.
Collapse
Affiliation(s)
- Sophie Veitinger
- Department of Chemosensation, Institute for Biology II, RWTH-Aachen University, Aachen, Germany
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
3
|
Abrams G, Sheets A, Corazza S, Andriacchi T, Safran M. Injury potential evaluation of the upper extremity and torso of three tennis serve types using a novel markerless motion system. Br J Sports Med 2011. [DOI: 10.1136/bjsm.2011.084038.66] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
4
|
Cainarca S, Fenu S, Bovolenta S, Arioli P, Menegon A, Lohmer S, Corazza S. From c-Photina® Mouse Embryonic Stem Cells to High-Throughput Screening of Differentiated Neural Cells via an Intermediate Step Enriched in Neural Precursor Cells. ACTA ACUST UNITED AC 2010; 15:1132-43. [DOI: 10.1177/1087057110379267] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The use of engineered mouse embryonic stem (mES) cells in high-throughput screening (HTS) can offer new opportunities for studying complex targets in their native environment, increasing the probability of discovering more meaningful hits. The authors have generated and developed a mouse embryonic stem cell line called c-Photina® mES stably expressing a Ca2+-activated photoprotein as a reporter gene. This reporter cell line retains the ability to differentiate into any cell lineage and can be used for miniaturized screening processes in 384-well microplates. The c-Photina® mES cell line is particularly well suited for the study of the pharmacological modulation of target genes that induce Ca2+ mobilization. The authors differentiated this mES reporter cell line into neuronal cells and screened the LOPAC1280™ library monitoring the agonistic or antagonistic activities of compounds. They also demonstrate the possibility to generate and freeze bulk preparations of cells at an intermediate stage of differentiation and enriched in neural precursor cells, which retain the ability to form fully functional neural networks once thawed. The proposed cell model is of high value for HTS purposes because it offers a more physiological environment to the targets of interest and the possibility of using frozen batches of neural precursor cells.
Collapse
Affiliation(s)
| | - Simone Fenu
- Department of Experimental Oncology, European Institute of Oncology, Milan, Italy
| | | | | | - Andrea Menegon
- NeuroTechnology Lab. Alembic (Advanced Light and Electron Microscopy Bio-Imaging Centre), San Raffaele Scientific Institute, Milan, Italy
| | | | | |
Collapse
|
5
|
Cainarca S, Fenu S, Ferri C, Nucci C, Arioli P, Menegon A, Piemonti L, Lohmer S, Wrabetz L, Corazza S. A photoprotein in mouse embryonic stem cells measures Ca2+ mobilization in cells and in animals. PLoS One 2010; 5:e8882. [PMID: 20111708 PMCID: PMC2811732 DOI: 10.1371/journal.pone.0008882] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2009] [Accepted: 12/22/2009] [Indexed: 12/18/2022] Open
Abstract
Exogenous expression of pharmacological targets in transformed cell lines has been the traditional platform for high throughput screening of small molecules. However, exogenous expression in these cells is limited by aberrant dosage, or its toxicity, the potential lack of interaction partners, and alterations to physiology due to transformation itself. Instead, primary cells or cells differentiated from precursors are more physiological, but less amenable to exogenous expression of reporter systems. To overcome this challenge, we stably expressed c-Photina, a Ca2+-sensitive photoprotein, driven by a ubiquitous promoter in a mouse embryonic stem (mES) cell line. The same embryonic stem cell line was also used to generate a transgenic mouse that expresses c-Photina in most tissues. We show here that these cells and mice provide an efficient source of primary cells, cells differentiated from mES cells, including cardiomyocytes, neurons, astrocytes, macrophages, endothelial cells, pancreatic islet cells, stably and robustly expressing c-Photina, and may be exploited for miniaturized high throughput screening. Moreover, we provide evidence that the transgenic mice may be suitable for ex-vivo bioimaging studies in both cells and tissues.
Collapse
|
6
|
Corazza S. All in one with chAMPion: a generic luminescence assay platform for any GPCR signaling type. Assay Drug Dev Technol 2009; 7:304-7. [PMID: 19604107 DOI: 10.1089/adt.2009.9989] [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: 11/12/2022] Open
Affiliation(s)
- Sabrina Corazza
- Axxam, San Raffaele Biomedical Science Park, via Olgettina 58, Milan, Italy.
| |
Collapse
|
7
|
Tasdemir A, Khan F, Jowitt TA, Iuzzolino L, Lohmer S, Corazza S, Schmidt TJ. Engineering of a monomeric fluorescent protein AsGFP499 and its applications in a dual translocation and transcription assay. Protein Eng Des Sel 2008; 21:613-22. [DOI: 10.1093/protein/gzn040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
8
|
Bovolenta S, Foti M, Lohmer S, Corazza S. Development of a Ca(2+)-activated photoprotein, Photina, and its application to high-throughput screening. ACTA ACUST UNITED AC 2007; 12:694-704. [PMID: 17517900 DOI: 10.1177/1087057107301497] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [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
The present work describes the engineering and characterization of a new Ca(2+)-activated photoprotein (Photina) and its use in mammalian cell lines for implementation of flash luminescence cell-based assays for high-throughput screening (HTS). When used to measure the activation of 2 G protein-coupled receptors (GPCRs), targeting Photina to the mitochondria increased the signal strength as compared to the normal cytoplasmic expression of Photina. The mitochondrial-targeted Photina also produced a higher signal-to-noise ratio than conventional calcium dyes and a consistently stronger signal than aequorin when tested under equivalent conditions. MitoPhotina provided strong and reliable results when used to measure the activity of purinergic receptors endogenously expressed in the Chinese Hamster Ovary cells and heterologously expressed GPCRs in response to their cognate ligands. Several different types of flash luminescence plate readers (FLIPR(3), FLIPR(TETRA), CyBi-Lumax flash HT, Lumilux, Lumibox) in different plate formats (96, 384, 1536 wells) were used to validate the use of Photina in HTS. The cell number had to be adjusted to correspond to the qualities of the different readers, but once so adjusted, it provided equivalent results on each device. The results obtained show robust and reproducible light signals that offer new possibilities for application of photoproteins to the generation of cell-based assays for HTS.
Collapse
|
9
|
Corazza S, Scarabottolo L, Lohmer S, Liberati C. An innovative cell-based assay for the detection of modulators of soluble guanylate cyclase. Assay Drug Dev Technol 2006; 4:165-73. [PMID: 16712420 DOI: 10.1089/adt.2006.4.165] [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: 11/13/2022] Open
Abstract
Guanylate cyclase (GC) catalyzes the biosynthesis of cyclic guanosine 3',5'- monophosphate (cGMP) from GTP. GC exists in two isoenzyme forms: soluble and membrane-bound. The soluble GC (sGC) is a heterodimer composed of an alpha and a beta subunit, and it contains heme as a prosthetic group. The most important physiological activator of sGC is nitric oxide, which activates the enzyme upon binding to the heme moiety. By producing the second messenger cGMP, which regulates various effector systems such as phosphodiesterases, ion channels, and protein kinases, sGC plays an important role in different physiological processes, thus representing a very attractive pharmacological target. In fact, the pathogenesis of several diseases, especially those of the cardiovascular system, has been linked to inappropriate regulation of sGC. In order to find new modulators for this important enzyme, an innovative cell-based assay has been developed and optimized for the use in high-throughput screening. This luminescent assay, which is suitable for both 96- and 384-well plate formats, has been achieved by stably expressing the alpha and beta subunits of a mutated form of sGC in Chinese hamster ovary cells. The mutated form synthesizes cyclic adenosine 3',5'-monophosphate instead of cGMP, allowing the detection of enzymatic activity by a reporter gene approach. We demonstrated that this cell line responds to compounds typically used in the field of sGC research and that it represents an innovative and robust assay to screen for sGC modulators with high efficiency and high sensitivity by means of standard luminescence readers.
Collapse
|
10
|
Corazza S, Mündermann L, Chaudhari AM, Demattio T, Cobelli C, Andriacchi TP. A markerless motion capture system to study musculoskeletal biomechanics: visual hull and simulated annealing approach. Ann Biomed Eng 2006; 34:1019-29. [PMID: 16783657 DOI: 10.1007/s10439-006-9122-8] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.5] [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: 07/01/2005] [Accepted: 03/29/2006] [Indexed: 10/24/2022]
Abstract
Human motion capture is frequently used to study musculoskeletal biomechanics and clinical problems, as well as to provide realistic animation for the entertainment industry. The most popular technique for human motion capture uses markers placed on the skin, despite some important drawbacks including the impediment to the motion by the presence of skin markers and relative movement between the skin where the markers are placed and the underlying bone. The latter makes it difficult to estimate the motion of the underlying bone, which is the variable of interest for biomechanical and clinical applications. A model-based markerless motion capture system is presented in this study, which does not require the placement of any markers on the subject's body. The described method is based on visual hull reconstruction and an a priori model of the subject. A custom version of adapted fast simulated annealing has been developed to match the model to the visual hull. The tracking capability and a quantitative validation of the method were evaluated in a virtual environment for a complete gait cycle. The obtained mean errors, for an entire gait cycle, for knee and hip flexion are respectively 1.5 degrees (+/-3.9 degrees ) and 2.0 degrees (+/-3.0 degrees ), while for knee and hip adduction they are respectively 2.0 degrees (+/-2.3 degrees ) and 1.1 degrees (+/-1.7 degrees ). Results for the ankle and shoulder joints are also presented. Experimental results captured in a gait laboratory with a real subject are also shown to demonstrate the effectiveness and potential of the presented method in a clinical environment.
Collapse
Affiliation(s)
- S Corazza
- Department of Mechanical Engineering, Stanford University, 496 Lomita Mall, Durand B. 201, CA 94305-4038, USA.
| | | | | | | | | | | |
Collapse
|
11
|
Andriacchi T, Muendermann L, Corazza S, Chaudhari A. A new era in the capture of human movement; markerless capture of human movement. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)83680-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Abstract
Hyperthermia plays an important role in oncological therapies, most often being used in combination with radiotherapy, chemotherapy and immunotherapy. The success of this therapy is strongly dependent on the precision and control of thermal deposition. Hyperthermia based on induction heating, with thermally self-regulating thermoseeds inserted into the tumorous mass, is used for interstitial treatment. The technique was the subject of the numerical study presented in the paper. The analysis was carried out using coupled electromagnetic heating and thermo-fluid dynamic FEM simulations. During thermal deposition by induction heating of inserted seeds, the simulations estimated the thermal field inside and outside the tumour, as well as the sensitivity of the thermal field to variations regarding seed temperature, configuration and proximity to vessels. The method, for which accurate anatomical patient's information is essential, is suitable for providing useful qualitative and quantitative information about thermal transients and power density distribution for hyperthermic treatment. Several grid steps were analysed and compared. A 1 cm seed grid was resulted in good homogeneity and effectiveness of the thermal deposition. The cold spot effect caused by large vessels was demonstrated and quantified. Simulations of the heating of a tumorous mass in the liver showed that an indcutor generator operating at 200 kHz frequency and 500 A current, producing a pulsating magnetic field of H = 60 A cm(-1), was adequate for the treatment. The seeds that perform best among those tested (Nicu (28% Cu), PdNi (27.2% Ni), PdCo (6.15% Co) and ferrite core) were the PdNi (1 mm radius, 10 mm length), as they have a low Curie temperature (52 degrees C), which is the closest to the desired treatment temperature and thus reduces the risk of hot spots.
Collapse
Affiliation(s)
- F Dughiero
- Department of Electrical Engineering, University of Padova, Padova, Italy.
| | | |
Collapse
|
13
|
Ragogna F, Angeli A, Corazza S, Tettamanti C, Faggiotto A, Grassi A, Ruotolo G. Increased J774 macrophage cytotoxicity of late postprandial triglyceride-rich lipoproteins from normolipidemic young men expressing an apolipoprotein epsilon 4 allele. Atherosclerosis 1997; 132:157-63. [PMID: 9242961 DOI: 10.1016/s0021-9150(97)00082-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
It has been demonstrated that normolipidemic young men with apolipoprotein E4/3 phenotype have a prolonged postprandial clearance of triglyceride-rich lipoproteins following a high-fat diet. In the present study, we isolated fasting and postprandial (3 and 8 h) lipoprotein fraction from normolipidemic young men with E3/3 and E4/3 phenotypes and examined the in vitro cytotoxicity of these lipoproteins towards J774 macrophages. 8 h E4/3 very low density lipoprotein (VLDL) were significantly more cytotoxic than either 8 h E3/3 VLDL or fasting and 3 h E4/3 VLDL (lactate dehydrogenase (LDH) released: 161 +/- 21, 107 +/- 9, 88 +/- 16 and 101 +/- 12 I.U./l, respectively). Fasting E4/3 intermediate density lipoprotein (IDL) were also significantly more cytotoxic than either fasting E3/3 IDL or 3 h and 8 h E4/3 IDL (LDH released: 105 +/- 23, 60 +/- 9, 37 +/- 5 and 53 +/- 16 I.U./l, respectively), whereas either fasting or postprandial low density lipoprotein (LDL) and high density lipoprotein (HDL) samples did not show any difference in cytotoxicity between the two groups studied. 8 h E4/3 VLDL samples incubated with J774 macrophages had a lower esterified cholesterol (40 +/- 3 versus 52 +/- 3 micrograms), and higher triglyceride (783 +/- 133 versus 418 +/- 64 micrograms) and free fatty acid (FFA) (2.0 +/- 0.4 versus 0.9 +/- 0.1 microgram) content than fasting E4/3 VLDL. The increased macrophage cytotoxicity of late postprandial triglyceride-rich lipoproteins seems to be related to the FFA content of E4/3 VLDL.
Collapse
Affiliation(s)
- F Ragogna
- Istituto Scientifico H San Raffaele, University of Milan, Italy
| | | | | | | | | | | | | |
Collapse
|
14
|
Abstract
Most studies on sign lateralization provide inconclusive results about the role of the two hemispheres in sign language processing, whereas the cases reported in the clinical literature show sign language impairment only following left hemisphere damage, suggesting a similar neural organization to spoken languages. By discriminating different levels of processing, a tachistoscopic study found that in deaf subjects matches of sign language handshapes based on equivalence of meaning are processed faster in the right visual field, thus demonstrating a left hemisphere superiority.
Collapse
Affiliation(s)
- G Grossi
- Istituto di Psicologia, Universitá di Pavia, Italy
| | | | | | | |
Collapse
|
15
|
Abstract
Italian deaf children in elementary and middle school have limited competence in written Italian, which is in part caused by difficulties with lexical and morphosyntactic aspects of the Italian language. This study describes a recently developed interactive multimedia application designed to facilitate deaf children's access to new information and reports the results of an initial experiment conducted with deaf elementary and middle school children. Subjects were twelve deaf children with varying backgrounds and linguistic competencies, ranging in age from 6;6 to 16;1 years. Experimentation was structured in three phases. In the initial phase, children explored the computer environment freely, and in the two subsequent phases, children were presented with activities requiring use of the application to obtain information. Results of a final evaluation indicated that all children were able to use and profit from the application. Findings are discussed in terms of bilingual methods of education for deaf children and their implications for increasing deaf children's competence in written language.
Collapse
Affiliation(s)
- V Volterra
- Institute of Psychology of the Italian Council of Research in Rome, Italy.
| | | | | | | |
Collapse
|
16
|
Maltier JP, Legrand C, Corazza S. [Alpha-adrenergic receptors in the myometrium of the preparturient rat]. Pathol Biol (Paris) 1984; 32:878-83. [PMID: 6095163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|