101
|
Kwint M, Stam B, Belderbos J, La Fontaine M, Aalbersberg E, Rossi M, Sonke J, Walraven I. P1.17-07 The Prognostic Value of Volumetric Changes of the GTV Measured on CBCT During Radiotherapy for CCRT in NSCLC Patients. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
102
|
Melandro F, Lai Q, Giovanardi F, Hassan R, Rossi M. Hybrid partial ALPPS: A feasible approach in case of right trisegmentectomy and macrovascular invasion. Eur J Surg Oncol 2018. [DOI: 10.1016/j.ejso.2018.07.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
|
103
|
Russo M, Peirce S, Perfetto R, Capasso C, Rossi M, Marzocchella A, Salatino P. Immobilization of carbonic anhydrase for enhancement of CO2 reactive absorption. N Biotechnol 2018. [DOI: 10.1016/j.nbt.2018.05.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
104
|
Stam B, Tijhuis A, Rossi M, Belderbos J, Sonke J. P3.16-17 Cardiac Sparing in Stereotactic Body Radiotherapy of Early Stage NSCLC Patients. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
105
|
Simonelli M, Massara M, Persico P, Capucetti A, Lorenzi E, Lugli E, Dipasquale A, Nibali M, Rossi M, Bello L, Locati M, Bonecchi R. P04.86 Correlation between activated infiltrating neutrophils and MGMT methylation in patients with diffuse malignant gliomas (MGs). Neuro Oncol 2018. [DOI: 10.1093/neuonc/noy139.320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
106
|
Müller D, Robe P, van den Brink W, Ardon H, Idema B, Kloet F, Wagemakers M, Barkhof F, Vandertop P, Bello L, Conti Nibali M, Rossi M, Sciortino T, Widhalm G, Kiesel B, Han S, Mandonnet E, Berger M, de Witt Hamer P. P01.062 Probability maps of glioblastoma indicate variation in surgical decisions between twelve surgical teams. Neuro Oncol 2018. [DOI: 10.1093/neuonc/noy139.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
107
|
Dall'Ara F, Cavazzana I, Frassi M, Taraborelli M, Fredi M, Franceschini F, Andreoli L, Rossi M, Cattaneo C, Tincani A, Airò P. Macrophage activation syndrome in adult systemic lupus erythematosus: report of seven adult cases from a single Italian rheumatology center. Reumatismo 2018; 70:100-105. [PMID: 29976044 DOI: 10.4081/reumatismo.2018.1023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 11/20/2017] [Accepted: 11/21/2017] [Indexed: 01/12/2023] Open
Abstract
The aim was to describe the macrophage activation syndrome (MAS), a life-threatening syndrome characterized by excessive immune activation that can be triggered by conditions affecting immune homeostasis, in a cohort of adult Italian patients with systemic lupus erythematosus (SLE). This was a monocentric retrospective evaluation. The utility of the H-score, developed to estimate the individual risk of having reactive MAS in adult patients, was assessed. Among 511 patients with SLE, 7 cases (1.4%) of MAS (all females) were identified and their medical records reviewed. In all cases, MAS was simultaneous to the onset of SLE. All patients had fever, lymphadenopathy, hematological involvement, and high titer of anti-dsDNA antibodies. Workup for infections and malignancies was negative. In all cases, the H-score was higher than the cut-off suggested for the classification of reactive MAS. All cases required hospital admission, and 2 patients were admitted to the intensive care unit. Most patients were treated successfully with high doses of corticosteroids and with immunosuppressive drugs, whereas the full therapeutic regimen developed for primary hemophagocytic lymphohistiocytosis HLH was used only in one case. No death from MAS was observed. MAS is a rare and severe disorder that complicated the onset of SLE in our cohort. The H-score may be useful in the classification of these patients.
Collapse
|
108
|
Rossi M, Gonzalez-Castro R, Falomo M. Detrimental Effect of Curcumin (Curcuma longa) on Stallion Sperm. J Equine Vet Sci 2018. [DOI: 10.1016/j.jevs.2018.05.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
109
|
Noviello C, Romano M, Nino F, Rossi M, Nobile S, Mariscoli F, Martino A, Cobellis G. Delayed diagnosis of hirschsprungs disease after esophageal atresia repair. JOURNAL OF PEDIATRIC SURGERY CASE REPORTS 2018. [DOI: 10.1016/j.epsc.2018.03.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
110
|
Cannizzaro D, Mancarella C, Milani D, Fernandes B, Rossi M, Fornari M, Cardia A. Intraventricular liponeurocytoma: The role of surgery and adjuvant therapy. INTERDISCIPLINARY NEUROSURGERY 2018. [DOI: 10.1016/j.inat.2017.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
111
|
Lamberti C, Sarti E, Santoro A, Spongano M, Zucchelli P, Rossi M. A Digital Computer Model for Optimal Programming of Hemodialytic Treatment. Int J Artif Organs 2018. [DOI: 10.1177/039139888801100405] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A mathematical model of hydroelectrolyte exchanges and arterial pressure regulation in the human body during dialysis has been set up. It is conceived as a tool for a new dialysis unit which will be able to “interpret” the signals supplied by suitable instruments connected to the patient and modify the machine set-points in real time in order to obtain clinical results defined by the physician. The main aim is the prevention of hypotensive episodes during treatment. An experimental protocol has been developed for parameter estimation of each patient during a single dialysis. Clinical tests illustrated the model's ability to fit the patient's state during dialysis. This is the first step in the more general task of validation of the model, necessary for the achievement of a closed-loop dialysis unit.
Collapse
|
112
|
Rebonato A, Maiettini D, Gerli S, Rossi M. Interventional radiology in the management of post-partum hemorrhage. CLIN EXP OBSTET GYN 2018. [DOI: 10.12891/ceog4315.2018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|
113
|
Boman E, Rossi M, Haltamo M, Skytta T, Kapanen M. EP-1901: Split arc VMAT technique for radiotherapy of lymph node positive breast cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32210-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
114
|
Stam B, Rossi M, Belderbos J, Sonke J. OC-0497: Dose-effect relation of heart dose and Overall Survival in stage I-III NSCLC patients. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)30807-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
115
|
Chang W, Chang W, Homer M, Rossi M. A Study of Remote Medication Management Using Veterans Affairs Clinical Video Telehealth Services. J Am Med Dir Assoc 2018. [DOI: 10.1016/j.jamda.2017.12.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
116
|
De Falco M, Massa F, Rossi M, De Felice M. The Sulfolobus solfataricus RecQ-like DNA helicase Hel112 inhibits the NurA/HerA complex exonuclease activity. Extremophiles 2018; 22:581-589. [PMID: 29488113 DOI: 10.1007/s00792-018-1018-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 02/21/2018] [Indexed: 02/03/2023]
Abstract
ATPase/Helicases and nucleases play important roles in DNA end-resection, a critical step during homologous recombination repair in all organisms. In hyperthermophilic archaea the exo-endonuclease NurA and the ATPase HerA cooperate with the highly conserved Mre11-Rad50 complex in 3' single-stranded DNA (ssDNA) end processing to coordinate repair of double-stranded DNA breaks. Little is known, however, about the assembly mechanism and activation of the HerA-NurA complex. In this study we demonstrate that the NurA exonuclease activity is inhibited by the Sulfolobus solfataricus RecQ-like Hel112 helicase. Inhibition occurs both in the presence and in the absence of HerA, but is much stronger when NurA is in complex with HerA. In contrast, the endonuclease activity of NurA is not affected by the presence of Hel112. Taken together these results suggest that the functional interaction between NurA/HerA and Hel112 is important for DNA end-resection in archaeal homologous recombination.
Collapse
|
117
|
Chiu ATG, Pei SLC, Mak CCY, Leung GKC, Yu MHC, Lee SL, Vreeburg M, Pfundt R, van der Burgt I, Kleefstra T, Frederic TMT, Nambot S, Faivre L, Bruel AL, Rossi M, Isidor B, Küry S, Cogne B, Besnard T, Willems M, Reijnders MRF, Chung BHY. Okur-Chung neurodevelopmental syndrome: Eight additional cases with implications on phenotype and genotype expansion. Clin Genet 2018; 93:880-890. [PMID: 29240241 DOI: 10.1111/cge.13196] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 11/20/2017] [Accepted: 12/10/2017] [Indexed: 12/27/2022]
Abstract
Okur-Chung syndrome is a neurodevelopmental condition attributed to germline CSNK2A1 pathogenic missense variants. We present 8 unreported subjects with the above syndrome, who have recognizable dysmorphism, varying degrees of developmental delay and multisystem involvement. Together with 6 previously reported cases, we present a case series of 7 female and 7 male subjects, highlighting the recognizable facial features of the syndrome (microcephaly, hypertelorism, epicanthic fold, ptosis, arched eyebrows, low set ears, ear fold abnormality, broad nasal bridge and round face) as well as frequently occurring clinical features including neurodevelopmental delay (93%), gastrointestinal (57%), musculoskeletal (57%) and immunological (43%) abnormalities. The variants reported in this study are evolutionary conserved and absent in the normal population. We observed that the CSNK2A1 gene is relatively intolerant to missense genetic changes, and most variants are within the protein kinase domain. All except 1 variant reported in this cohort are spatially located on the binding pocket of the holoenzyme. We further provide key recommendations on the management of Okur-Chung syndrome. To conclude, this is the second case series on Okur-Chung syndrome, and an in-depth review of the phenotypic features and genomic findings of the condition with suggestions on clinical management.
Collapse
|
118
|
Demougeot L, Houdayer F, Pélissier A, Mohrez F, Thevenon J, Duffourd Y, Nambot S, Gautier E, Binquet C, Rossi M, Sanlaville D, Béjean S, Peyron C, Thauvin-Robinet C, Faivre L. [Changes in clinical practice related to the arrival of next-generation sequencing in the genetic diagnosis of developmental diseases]. Arch Pediatr 2018; 25:77-83. [PMID: 29395884 DOI: 10.1016/j.arcped.2017.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 09/29/2017] [Accepted: 12/10/2017] [Indexed: 12/11/2022]
Abstract
INTRODUCTION The arrival of high-throughput sequencing (HTS) has led to a sweeping change in the diagnosis of developmental abnormalities (DA) with or without intellectual deficiency (ID). With the prospect of deploying these new technologies, two questions have been raised: the representations of HTS among geneticists and the costs incurred due to these analyses. METHODS Geneticists attending a clinical genetics seminar were invited to complete a questionnaire. The statistical analysis was essentially descriptive and an analysis of costs was undertaken. RESULTS Of those responding to the questionnaire, 48% had already prescribed exome analysis and 25% had already had the occasion to disclose the results of such analyses. Ninety-six percent were aware that whole-exome sequencing (WES) had certain limits and 74% expressed misgivings concerning its use in medical practice. In parallel, the evaluation of costs showed that WES was less expensive than conventional procedures. DISCUSSION The survey revealed that geneticists had already come to terms with HTS as early as 2015. Among the major concerns expressed were the complexity of interpreting these tests and the many ethical implications. Geneticists seemed to be aware of the advantages but also the limits of these new technologies. The cost analysis raises questions about the place of HTS and in particular WES in the diagnostic work-up: should it be used early to obtain an etiological diagnosis rather than as the last resort? CONCLUSION It is essential for future generations of doctors and for the families concerned to learn about the concepts of HTS, which is set to become a major feature of new genomic medicine.
Collapse
|
119
|
Fasce F, Spinelli A, Bolognesi G, Rossi M, Gemma M. Comparison of BD Multivisc™ with the Soft Shell Technique in Cases with Hard Lens Nucleus and Fuchs Endothelial Dystrophy. Eur J Ophthalmol 2018; 17:709-13. [DOI: 10.1177/112067210701700504] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
120
|
Kaminsky R, Morbiducci U, Rossi M, Scalise L, Verdonck P, Grigioni M. Time-Resolved PIV Technique for High Temporal Resolution Measurement of Mechanical Prosthetic Aortic Valve Fluid Dynamics. Int J Artif Organs 2018; 30:153-62. [PMID: 17377910 DOI: 10.1177/039139880703000210] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Prosthetic heart valves (PHVs) have been used to replace diseased native valves for more than five decades. Among these, mechanical PHVs are the most frequently implanted. Unfortunately, these devices still do not achieve ideal behavior and lead to many complications, many of which are related to fluid mechanics. The fluid dynamics of mechanical PHVs are particularly complex and the fine-scale characteristics of such flows call for very accurate experimental techniques. Adequate temporal resolution can be reached by applying time-resolved PIV, a high-resolution dynamic technique which is able to capture detailed chronological changes in the velocity field. The aim of this experimental study is to investigate the evolution of the flow field in a detailed time domain of a commercial bileaflet PHV in a mock-loop mimicking unsteady conditions, by means of time-resolved 2D Particle Image Velocimetry (PIV). The investigated flow field corresponded to the region immediately downstream of the valve plane. Spatial resolution as in “standard” PIV analysis of prosthetic valve fluid dynamics was used. The combination of a Nd:YLF high-repetition-rate double-cavity laser with a high frame rate CMOS camera allowed a detailed, highly temporally resolved acquisition (up to 10000 fps depending on the resolution) of the flow downstream of the PHV. Features that were observed include the non-homogeneity and unsteadiness of the phenomenon and the presence of large-scale vortices within the field, especially in the wake of the valve leaflets. Furthermore, we observed that highly temporally cycle-resolved analysis allowed the different behaviors exhibited by the bileaflet valve at closure to be captured in different acquired cardiac cycles. By accurately capturing hemodynamically relevant time scales of motion, time-resolved PIV characterization can realistically be expected to help designers in improving PHV performance and in furnishing comprehensive validation with experimental data on fluid dynamics numeric modelling.
Collapse
|
121
|
Carriço JA, Rossi M, Moran-Gilad J, Van Domselaar G, Ramirez M. A primer on microbial bioinformatics for nonbioinformaticians. Clin Microbiol Infect 2018; 24:342-349. [PMID: 29309933 DOI: 10.1016/j.cmi.2017.12.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 11/13/2017] [Accepted: 12/22/2017] [Indexed: 01/19/2023]
Abstract
BACKGROUND Presently, the bottleneck in the deployment of high-throughput sequencing technology is the ability to analyse the increasing amount of data produced in a fit-for-purpose manner. The field of microbial bioinformatics is thriving and quickly adapting to technological changes, which creates difficulties for nonbioinformaticians in following the complexity and increasingly obscure jargon of this field. AIMS This review is directed towards nonbioinformaticians who wish to gain understanding of the overall microbial bioinformatic processes, from raw data obtained from sequencers to final outputs. SOURCES The software and analytical strategies reviewed are based on the personal experience of the authors. CONTENT The bioinformatic processes of transforming raw reads to actionable information in a clinical and epidemiologic context is explained. We review the advantages and limitations of two major strategies currently applied: read mapping, which is the comparison with a predefined reference genome, and de novo assembly, which is the unguided assembly of the raw data. Finally, we discuss the main analytical methodologies and the most frequently used freely available software and its application in the context of bacterial infectious disease management. IMPLICATIONS High-throughput sequencing technologies are overhauling outbreak investigation and epidemiologic surveillance while creating new challenges due to the amount and complexity of data generated. The continuously evolving field of microbial bioinformatics is required for stakeholders to fully harness the power of these new technologies.
Collapse
|
122
|
Rossi M, Taddei AR, Fasciani I, Maggio R, Giorgi F. The cell biology of the thyroid-disrupting mechanism of dichlorodiphenyltrichloroethane (DDT). J Endocrinol Invest 2018. [PMID: 28639207 DOI: 10.1007/s40618-017-0716-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Dichlorodiphenyltrichloroethane (DDT) is an organochlorine known for its pesticide properties and for its negative effects on human health. It was banned in most countries for its toxicity to the endocrine system, but due to its persistence at clinically relevant concentrations in both soil and animal tissues, DDT is still linked to several health and social problems. METHODS We have previously shown that DDT exposure is causally related to the extracellular release of vesicular organelles such as microvesicles and/or exosomes by using immunocytochemistry with gold-tagged antibodies and various fluorescent membrane markers. RESULTS It is now well recognized that microvesicles and/or exosomes organelles are implicated in cell-to-cell communication, and that they are fundamental elements for transferring proteins, RNA, DNA, lipids and transcriptional factors among cells. In this short review, we discussed the role of extracellular vesicle formation in the thyroid-disrupting mechanism of DDT. In particular, we described how DDT, by dislodging the thyrotropin hormone (TSH) receptor from the raft containing compartments of the cells, prevents its activation and internalization. CONCLUSION Based on our earlier finding and on the large body of evidence here reviewed, we propose that DDT-induced formation of extracellular vesicles containing the TSH receptor could be directly involved in the development of autoimmune responses against the TSH receptor and that, therefore, their release could lead to the development of the Graves' disease.
Collapse
|
123
|
Mazguene S, Rossi M, Gogliettino M, Palmieri G, Cocca E, Mirino S, Imadalou-Idres N, Benallaoua S. Isolation and characterization from solar salterns of North Algeria of a haloarchaeon producing a new halocin. Extremophiles 2017; 22:259-270. [PMID: 29288279 DOI: 10.1007/s00792-017-0994-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 12/18/2017] [Indexed: 10/18/2022]
Abstract
Halophilic archaea, thriving in hypersaline environments, synthesize antimicrobial substances with an unknown role, called halocins. It has been suggested that halocin production gives transient competitive advantages to the producer strains and represents one of the environmental factors influencing the microbial community composition. Herein, we report on the antibacterial activity of a new haloarchaeon selected from solar salterns of the northern coast of Algeria. A total of 81 halophilic strains, isolated from the microbial consortia, were screened for the production of antimicrobial compounds by interspecies competition test and against a collection of commercial haloarchaea. On the basis of the partial 16S rRNA sequencing, the most efficient halocin producer was recognized as belonging to Haloferax (Hfx) sp., while the best indicator microorganism, showing high sensitivity toward halocin, was related to Haloarcula genus. The main morphological, physiological and biochemical properties of Hfx were investigated and a partial purification of the produced halocin was allowed to identify it as a surface membrane protein with a molecular mass between 30 and 40 kDa. Therefore, in this study, we isolated a new strain belonging to Haloferax genus and producing a promising antimicrobial compound useful for applications in health and food industries.
Collapse
|
124
|
Perfetto R, Del Prete S, Vullo D, Sansone G, Barone C, Rossi M, Supuran CT, Capasso C. Biochemical characterization of the native α-carbonic anhydrase purified from the mantle of the Mediterranean mussel, Mytilus galloprovincialis. J Enzyme Inhib Med Chem 2017; 32:632-639. [PMID: 28229634 PMCID: PMC6010126 DOI: 10.1080/14756366.2017.1284069] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 01/16/2017] [Indexed: 01/18/2023] Open
Abstract
A α-carbonic anhydrase (CA, EC 4.2.1.1) has been purified and characterized biochemically from the mollusk Mytilus galloprovincialis. As in most mollusks, this α-CA is involved in the biomineralization processes leading to the precipitation of calcium carbonate in the mussel shell. The new enzyme had a molecular weight of 50 kDa, which is roughly two times higher than that of a monomeric α-class enzyme. Thus, Mytilus galloprovincialis α-CA is either a dimer, or similar to the Tridacna gigas CA described earlier, may have two different CA domains in its polypeptide chain. The Mytilus galloprovincialis α-CA sequence contained the three His residues acting as zinc ligands and the gate-keeper residues present in all α-CAs (Glu106-Thr199), but had a Lys in position 64 and not a His as proton shuttling residue, being thus similar to the human isoform hCA III. This probably explains the relatively low catalytic activity of Mytilus galloprovincialis α-CA, with the following kinetic parameters for the CO2 hydration reaction: kcat = 4.1 × 105 s-1 and kcat/Km of 3.6 × 107 M-1 × s-1. The enzyme activity was poorly inhibited by the sulfonamide acetazolamide, with a KI of 380 nM. This study is one of the few describing in detail the biochemical characterization of a molluskan CA and may be useful for understanding in detail the phylogeny of these enzymes, their role in biocalcification processes and their potential use in the biomimetic capture of the CO2.
Collapse
|
125
|
Kris M, Aisner D, Sholl L, Berry L, Rossi M, Chen H, Fujimoto J, Moreira A, Ramalingam S, Villaruz L, Otterson G, Haura E, Politi K, Glisson B, Cetnar J, Garon E, Schiller J, Waqar S, Sequist L, Brahmer J, Shyr Y, Kugler K, Wistuba I, Johnson B, Minna J, Bunn P, Kwiatkowski D. P3.03-007 LCMC2: Expanded Profiling of Lung Adenocarcinomas Identifies ROS1 and RET Rearrangements and TP53 Mutations as a Negative Prognostic Factor. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|