1
|
Brasil IRC, Custodio-Lima J, Sampaio RL, Pierre AMM, Esmeraldo TM, Lima RVC, Lima LFA, Esmeraldo RM. Pre-emptive Therapy for Cytomegalovirus in Post-transplantation Liver Patients With Donor-Positive/Recipient-Negative Serostatus. Transplant Proc 2018; 49:871-873. [PMID: 28457414 DOI: 10.1016/j.transproceed.2017.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
INTODUCTION Infection by cytomegalovirus (CMV) is a major cause of morbidity among immunosuppressed patients, especially after solid organ transplantation. The risk of CMV after organ transplantation is strongly related to the serology of the donor and the recipient. The objective of this study was to analyze the outcomes and costs of pre-emptive therapy in patients after liver transplantation with donor-positive/recipient-negative (D+/R-) serostatus. METHODS This retrospective study analyzed all patients who underwent liver transplantation with CMV serostatus D+/R- between January 2012 and December 2015. The service protocol adopts pre-emptive therapy. The outcomes and costs of this therapy are described. RESULTS Of the 119 patients undergoing liver transplantation, 19 were D+/R- and entered the main analysis. Of these, 7 had positive polymerase chain reaction (PCR) results, and 1 developed CMV disease. Of the 6 patients who received no treatment, none developed CMV disease. Analyzing costs, pre-emptive therapy for these patients generated service savings of R$32,346.00. CONCLUSIONS Although outcomes of universal prophylaxis and pre-emptive therapy are similar, pre-emptive therapy save on costs and have to be considered in patients with high-risk CMV disease after liver transplantation.
Collapse
Affiliation(s)
- I R C Brasil
- Liver Transplantation Service of Fortaleza General Hospital, Fortaleza, Ceará, Brasil.
| | - J Custodio-Lima
- Liver Transplantation Service of Fortaleza General Hospital, Fortaleza, Ceará, Brasil
| | - R L Sampaio
- Liver Transplantation Service of Fortaleza General Hospital, Fortaleza, Ceará, Brasil
| | - A M M Pierre
- Liver Transplantation Service of Fortaleza General Hospital, Fortaleza, Ceará, Brasil
| | - T M Esmeraldo
- Liver Transplantation Service of Fortaleza General Hospital, Fortaleza, Ceará, Brasil
| | - R V C Lima
- Liver Transplantation Service of Fortaleza General Hospital, Fortaleza, Ceará, Brasil
| | - L F A Lima
- Liver Transplantation Service of Fortaleza General Hospital, Fortaleza, Ceará, Brasil
| | - R M Esmeraldo
- Liver Transplantation Service of Fortaleza General Hospital, Fortaleza, Ceará, Brasil
| |
Collapse
|
2
|
Vessoni AT, Herai RH, Karpiak JV, Leal AMS, Trujillo CA, Quinet A, Agnez Lima LF, Menck CFM, Muotri AR. Cockayne syndrome-derived neurons display reduced synapse density and altered neural network synchrony. Hum Mol Genet 2016; 25:1271-80. [PMID: 26755826 DOI: 10.1093/hmg/ddw008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 01/06/2016] [Indexed: 01/04/2023] Open
Abstract
Cockayne syndrome (CS) is a rare genetic disorder in which 80% of cases are caused by mutations in the Excision Repair Cross-Complementation group 6 gene (ERCC6). The encoded ERCC6 protein is more commonly referred to as Cockayne Syndrome B protein (CSB). Classical symptoms of CS patients include failure to thrive and a severe neuropathology characterized by microcephaly, hypomyelination, calcification and neuronal loss. Modeling the neurological aspect of this disease has proven difficult since murine models fail to mirror classical neurological symptoms. Therefore, a robust human in vitro cellular model would advance our fundamental understanding of the disease and reveal potential therapeutic targets. Herein, we successfully derived functional CS neural networks from human CS induced pluripotent stem cells (iPSCs) providing a new tool to facilitate studying this devastating disease. We identified dysregulation of the Growth Hormone/Insulin-like Growth Factor-1 (GH/IGF-1) pathway as well as pathways related to synapse formation, maintenance and neuronal differentiation in CSB neurons using unbiased RNA-seq gene expression analyses. Moreover, when compared to unaffected controls, CSB-deficient neural networks displayed altered electrophysiological activity, including decreased synchrony, and reduced synapse density. Collectively, our work reveals that CSB is required for normal neuronal function and we have established an alternative to previously available models to further study neural-specific aspects of CS.
Collapse
Affiliation(s)
- Alexandre T Vessoni
- Department of Pediatrics/Rady Children's Hospital San Diego, Department of Cellular and Molecular Medicine, Stem Cell Program, University of California San Diego, School of Medicine, La Jolla, CA 92037, USA, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP 05508-000, Brazil
| | - Roberto H Herai
- Department of Pediatrics/Rady Children's Hospital San Diego, Department of Cellular and Molecular Medicine, Stem Cell Program, University of California San Diego, School of Medicine, La Jolla, CA 92037, USA, Graduate Program in Health Sciences, School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná 80215-901, Brazil and
| | - Jerome V Karpiak
- Department of Pediatrics/Rady Children's Hospital San Diego, Department of Cellular and Molecular Medicine, Stem Cell Program, University of California San Diego, School of Medicine, La Jolla, CA 92037, USA
| | - Angelica M S Leal
- Department of Pediatrics/Rady Children's Hospital San Diego, Department of Cellular and Molecular Medicine, Stem Cell Program, University of California San Diego, School of Medicine, La Jolla, CA 92037, USA, Department of Cell Biology and Genetics, Center of Biosciences Federal University of Rio Grande do Norte, Natal, RN 59072-970, Brazil
| | - Cleber A Trujillo
- Department of Pediatrics/Rady Children's Hospital San Diego, Department of Cellular and Molecular Medicine, Stem Cell Program, University of California San Diego, School of Medicine, La Jolla, CA 92037, USA
| | - Annabel Quinet
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP 05508-000, Brazil
| | - Lucymara F Agnez Lima
- Department of Cell Biology and Genetics, Center of Biosciences Federal University of Rio Grande do Norte, Natal, RN 59072-970, Brazil
| | - Carlos F M Menck
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP 05508-000, Brazil
| | - Alysson R Muotri
- Department of Pediatrics/Rady Children's Hospital San Diego, Department of Cellular and Molecular Medicine, Stem Cell Program, University of California San Diego, School of Medicine, La Jolla, CA 92037, USA,
| |
Collapse
|
3
|
Nascimento MS, Magalhães JEM, Pinheiro TS, Silva TAD, Coutinho LG, Baseia IG, Lima LFA, Leite EL. Polysaccharides from the fungus Scleroderma nitidum with anti-inflammatory potential modulate cytokine levels and the expression of Nuclear Factor kB. Rev bras farmacogn 2012. [DOI: 10.1590/s0102-695x2011005000214] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
4
|
Queiroz LS, Nascimento MS, Cruz AKM, Castro AJG, Moura MDFV, Baseia IG, Araújo RM, Benevides NMB, Lima LFA, Leite EL. Glucans from the Caripia montagnei mushroom present anti-inflammatory activity. Int Immunopharmacol 2009; 10:34-42. [PMID: 19804847 DOI: 10.1016/j.intimp.2009.09.015] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Revised: 09/19/2009] [Accepted: 09/23/2009] [Indexed: 11/30/2022]
Abstract
Caripia montagnei is a basidiomycete species which contains polysaccharides with immunomodulatory properties. An extract of this mushroom underwent removal of the fat content by organic solvent and subsequently proteolysis. The aqueous phase obtained after proteolysis was precipitated with methanol yielding a fraction containing carbohydrates (98.7+/-3.3%) and protein (1.3+/-0.25%). Chemical analysis, infrared spectroscopy and nuclear magnetic resonance (NMR) showed that the carbohydrate fraction contained (63.3+/-4.1) of beta-glucans and proteins (2.2+/-0.3%). These glucans (50mg/kg of body weight) significantly reduced the inflammatory infiltrate produced by thioglycolate-induced peritonitis by 75.5+/-5.2%, when compared to Wy-14643 (60.3+/-6.1%), PFOA (37.8+/-2.8%) and clofibrate (52.2+/-3.2%), p<0.001, which are of the peroxisome proliferator-activated receptor (PPAR-alpha). L-NAME, a nitric oxide synthase inhibitor, reduced the plantar edema in Wistar rats by 91.4+/-1.3% (p<0.001). A significant reduction in nitric oxide (NO) levels was observed in the exudates when the glucans was used in comparison to carrageenan. The C. montagnei glucans did not present signs of inducing cytotoxicity. A decrease in IL-1ra, IL-10 and IFN-gamma in the peritonitis model was observed. Thus, the results suggest that glucans from the C. montagnei mushroom is an effective immunomodulator and may have potential for anti-inflammatory properties.
Collapse
Affiliation(s)
- Lissandra S Queiroz
- Glycobiology Laboratory, Department of Biochemistry, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil
| | | | | | | | | | | | | | | | | | | |
Collapse
|