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Almeida FC, Berzoti-Coelho MG, Cacemiro MC, Bassan VL, Barretto GD, Palma LC, Figueiredo-Pontes LL, Sorgi CA, Gardinassi LG, Castro FA. EICOSANOIDS AS HALLMARKS OF CHRONIC MYELOID LEUKEMIA PROGRESSION AND RESISTANCE TO TKI. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.402] [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: 11/06/2022] Open
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Cacemiro MC, Cominal JG, Almeida FC, Oliveira MC, Sorgi CA, Figueiredo-Pontes LL, Faccioli LH, Gardinassi LG, Castro FA. METABOLIC PROFILE OF BONE MARROW PLASMA IN MYELOPROLIFERATIVE NEOPLASMS. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.234] [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: 10/20/2022] Open
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Barretto GD, Bassan VL, Palma PBV, Lettieri JP, Garibaldi PMM, Rodrigues MCO, Covas DT, Figueiredo-Pontes LL, Kashima S, Castro FA. FREQUÊNCIA DE SUBPOPULAÇÕES DE PRECURSORES TERMINAIS ERITROIDES EM NEOPLASIAS MIELOPROLIFERATIVAS PH – NEGATIVAS. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.227] [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: 10/20/2022] Open
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Lima SCG, Brand H, Batista LC, Fantacini DMC, Coelho MGB, Castro FA, Covas DT, Souza LEB. DEVELOPMENT OF CRISPR/CAS9-BASED GENOME EDITING PLATFORM FOR THE GENERATION OF ALLOGENEIC CAR-T CELLS. Cytotherapy 2021. [DOI: 10.1016/j.jcyt.2021.02.034] [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: 11/16/2022]
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Castro FA, Lourenco M, Leite PVA, Azevedo O, Dias G, Faria B, Nogueira I, Lourenco A. P317 Assessment of atrial function in elite soccer players. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.170] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Athlete´s heart is associated with physiological remodelling as a consequence of repetitive cardiac loading. Atrial dilation may occur in athletes, but atrial size is insufficient to provide mechanistic information about the atrium itself and an increase in atrial size is not intrinsically an expression of atrial dysfunction. Two dimensional (2D) LA strain analysis by speckle tracking emerges as a gold standard for evaluation of atrial myocardial function.
Aim
To compare LA function between elite soccer players and sedentary healthy controls through 2D-strain analysis by speckle tracking.
Methods
We included 44 consecutive male professional soccer players and 25 sedentary male healthy controls, matched by age and race. All subjects underwent transthoracic echocardiogram, including evaluation of LA diameter and volume and 2D-strain analysis by speckle tracking. Peak atrial longitudinal strain (PALS) was measured at the end of the reservoir phase and peak atrial contraction strain (PACS) was measured just before the start of the active atrial contractile phase. The average of PALS and PACS was obtained from the 12 LA segments at apical 4 and 2-chamber views. The LA contraction strain index (CSI) (ratio PACS/PALS x100) was also calculated. SPSS 20.0 was used for statistical analysis.
Results
Mean age was similar between athletes and controls (22.3 ± 4.2 vs 25.0 ± 2.4 p = 0.13) as well as body mass index (23.3 ± 5.8 vs 24.6 ± 2.7 Kg/m2, p = 0.24).
Athletes had significantly higher LA volume (29.1 ± 6.9 vs. 21.1 ± 5.5, p < 0.001). No statistical differences were observed in LA diameter between the two groups (18.7 ± 2 vs 18.0 ±1.7, p = 0.163).
Athletes had significantly lower PALS (36.3%±5.8 vs. 44.2%±8.9, p < 0.001), PACS (9.5%±2.8 vs 15.3%±4.8, p < 0.001) and LA CSI (26.3 ± 7.8 vs. 35.0 ± 9.3, p < 0.001) than controls. LA volume was correlated with PALS (p < 0.001 r = 0.99), but not with PACS or CSI (p = 0.089 and p = 0.142, respectively).
Conclusion
This study showed that in top-level athletes LA PALS and PACS are lower and PALS correlates with LA volume, suggesting that LA suffers not only a morphological but also a functional remodelling in response to intensive exercise. This can be mediated by increased LA workload imposed by the increased left ventricular work.
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Affiliation(s)
- F A Castro
- Hospital Senhora da Oliveira, Serviço de Cardiologia, Guimarães, Portugal
| | - M Lourenco
- Hospital Senhora da Oliveira, Serviço de Cardiologia, Guimarães, Portugal
| | - P V A Leite
- Hospital Senhora da Oliveira, Serviço de Cardiologia, Guimarães, Portugal
| | - O Azevedo
- Hospital Senhora da Oliveira, Serviço de Cardiologia, Guimarães, Portugal
| | - G Dias
- Hospital Senhora da Oliveira, Serviço de Cardiologia, Guimarães, Portugal
| | - B Faria
- Hospital Senhora da Oliveira, Serviço de Cardiologia, Guimarães, Portugal
| | - I Nogueira
- Hospital Senhora da Oliveira, Serviço de Cardiologia, Guimarães, Portugal
| | - A Lourenco
- Hospital Senhora da Oliveira, Serviço de Cardiologia, Guimarães, Portugal
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Castro FA, Davies J, Pattipaka T, Surinach A, Reyes-Rivera I, Garcia J. P01.024 Corticosteroid use in elderly patients with newly diagnosed glioblastoma in the United States. Neuro Oncol 2018. [DOI: 10.1093/neuonc/noy139.066] [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)
- F A Castro
- PHC Data Science, Real World Data Oncology, F. Hoffmann-La Roche, Ltd, Basel, Switzerl
| | - J Davies
- PHC Data Science, Real World Data Oncology, F. Hoffmann-La Roche, Ltd, Basel, Switzerl
| | - T Pattipaka
- PHC Data Science, Real World Data Oncology, F. Hoffmann-La Roche, Ltd, Basel, Switzerl
| | - A Surinach
- Genesis Research, Hoboken, NJ, United States
| | - I Reyes-Rivera
- PHC Data Science, Real World Data Oncology, F. Hoffmann-La Roche, Ltd, Basel, Switzerl
| | - J Garcia
- Clinical Science, F. Hoffmann-La Roche, Ltd, Basel, Switzerland
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Song RB, Kent M, Glass EN, Davis GJ, Castro FA, de Lahunta A. Hemifacial Microsomia in a Cat. Anat Histol Embryol 2017; 46:497-501. [PMID: 28718994 DOI: 10.1111/ahe.12285] [Citation(s) in RCA: 3] [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] [Received: 12/06/2016] [Accepted: 06/12/2017] [Indexed: 11/27/2022]
Abstract
A 7-month-old domestic medium hair cat presented with facial asymmetry affecting the bony and soft tissue structures of the right side of the head including the maxilla, nose, eye and pinna of the ear. Additionally, neurological dysfunction of the facial and vestibulocochlear nerves on the affected side was present. A congenital malformation affecting the first and second embryologic pharyngeal arches was suspected. This is the first case of hemifacial microsomia of likely congenital origin reported in a cat.
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Affiliation(s)
- R B Song
- Department of Neurology and Neurosurgery, Red Bank Veterinary Hospital, Compassion First Pet Hospitals, Tinton Falls, NJ, USA
| | - M Kent
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - E N Glass
- Department of Neurology and Neurosurgery, Red Bank Veterinary Hospital, Compassion First Pet Hospitals, Tinton Falls, NJ, USA
| | - G J Davis
- Department of Surgery, Red Bank Veterinary Hospital, Compassion First Pet Hospitals, Tinton Falls, NJ, USA
| | - F A Castro
- Department of Radiology, Red Bank Veterinary Hospital, Compassion First Pet Hospitals, Tinton Falls, NJ, USA
| | - A de Lahunta
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
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Moura LG, Tognon R, Nunes NS, Rodrigues LC, Ferreira AF, Kashima S, Covas DT, Santana M, Souto EX, Perobelli L, Simões BP, Dias-Baruffi M, Castro FA. Different expression patterns of LGALS1 and LGALS3 in polycythemia vera, essential thrombocythemia and primary myelofibrosis. J Clin Pathol 2016; 69:926-9. [PMID: 27402956 DOI: 10.1136/jclinpath-2016-203948] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 06/21/2016] [Indexed: 11/04/2022]
Abstract
Despite all the knowledge, the cellular and molecular mechanisms involved in myeloproliferative neoplasm (MPN) pathophysiology remain unclear. Authors have shown galectin-1 (Gal-1) and 3 playing roles in tumour angiogenesis and fibrosis, which were correlated with poor prognosis in patients with MPN. In the present study LGALS1 and LGALS3 were differently expressed between polycythemia vera, essential thrombocythemia (ET) and primary myelofibrosis (PMF) diseases. Increased LGALS3 expression was associated with a negative JAK2 V617F status mutation in leucocytes from PMF but not in patients with ET without this mutation. However, a positive Janus kinase 2 (JAK2) V617F cell line established from patients with ET (SET-2 cells) when treated with JAK inhibitor presented high levels of LGALS3. Additionally, high LGALS1 expression was found in CD34(+) cells but not in leucocytes from patients with PMF, in absence of JAK2 V617F mutation, and also in SET-2 cells treated with JAK inhibitor. Thus, our findings indicate that differential expression of LGALS1 and/or LGALS3 in patients with MPN is linked with JAK2 V617F status mutation in these diseases and state of cell differentiation.
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Affiliation(s)
- L G Moura
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - R Tognon
- Departamento de Farmácia, Universidade Federal de Juiz de Fora-Campus Governador Valadares, Governador Valadares, Minas Gerais, Brasil
| | - N S Nunes
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - L Cataldi Rodrigues
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - A F Ferreira
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - S Kashima
- Hemocentro de Ribeirão Preto-Hospital das Clínicas, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - D T Covas
- Hemocentro de Ribeirão Preto-Hospital das Clínicas, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil Departamento de Clínica Médica, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - M Santana
- Hospital Estadual de Transplantes Euryclides de Jesus Zerbini, São Paulo, Brasil
| | - E X Souto
- Hospital Estadual de Transplantes Euryclides de Jesus Zerbini, São Paulo, Brasil
| | - L Perobelli
- Hospital Estadual de Transplantes Euryclides de Jesus Zerbini, São Paulo, Brasil
| | - B P Simões
- Departamento de Clínica Médica, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - M Dias-Baruffi
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - F A Castro
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
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Song RB, Glass EN, Kent M, Castro FA, deLahunta A. Magnetic resonance imaging and computed tomography findings of Dyke-Davidoff-Masson-like syndrome in a cat. Aust Vet J 2015; 93:377-80. [PMID: 26412120 DOI: 10.1111/avj.12365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Revised: 12/30/2014] [Accepted: 04/13/2015] [Indexed: 11/27/2022]
Abstract
CASE REPORT A 3.5-year-old spayed female Domestic Shorthair cat was evaluated for new onset seizures and lateralising signs indicative of a lesion in the right prosencephalon. Magnetic resonance imaging and computed tomography of the head revealed hypoplasia of the right cerebral hemisphere and changes in the overlying cranium, including hyperostosis and expansion of the diploic space, resulting in an increased pneumatisation of the rostral bones of the cranium. A congenital injury to the cerebral hemisphere and secondary changes of the cranium in response to the decreased brain parenchyma was presumed. Similar changes have been previously recognised in human patients with unilateral anomalies of the cerebral hemispheres, termed Dyke-Davidoff-Masson syndrome (DDMS). CONCLUSION The case presented is the first clinical and imaging description of a cat with a syndrome that closely resembles DDMS in humans. The description of the syndrome allows recognition of an additional differential for seizures in a young patient and informs the clinician of the imaging characteristics of the cranium seen with early loss of brain parenchyma.
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Affiliation(s)
- R B Song
- Department of Neurology and Neurosurgery, Red Bank Veterinary Hospital, Tinton Falls, NJ, USA.
| | - E N Glass
- Department of Neurology and Neurosurgery, Red Bank Veterinary Hospital, Tinton Falls, NJ, USA
| | - M Kent
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - F A Castro
- Department of Radiology, Red Bank Veterinary Hospital, Tinton Falls, NJ, USA
| | - A deLahunta
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
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Ferreira AF, Moura LG, Tojal I, Ambrósio L, Pinto-Simões B, Hamerschlak N, Calin GA, Ivan C, Covas DT, Kashima S, Castro FA. ApoptomiRs expression modulated by BCR-ABL is linked to CML progression and imatinib resistance. Blood Cells Mol Dis 2014; 53:47-55. [PMID: 24629639 DOI: 10.1016/j.bcmd.2014.02.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 02/03/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Chronic myeloid leukemia (CML) is a myeloproliferative disease characterized by the presence of Philadelphia chromosome (Ph) leading to expression of a BCR-ABL1 fusion oncogene. The BCR-ABL protein has a constitutive tyrosine kinase activity which is responsible for CML pathogenesis by promoting cell apoptosis resistance; however, the cellular and molecular mechanisms associated with BCR-ABL expression and apoptosis impairment in CML leukemic cells have not been fully elucidated. METHODS This study evaluated apoptomiRs and their predicted apoptotic genes in BCR-ABL(+) cells from patients in different phases of CML treated with tyrosine kinase inhibitor (TKI) according to their imatinib (IM) response by qPCR. Phosphotyrosine and c-ABL expressions in HL-60.BCR-ABL cells treated with TKI were done by Western blot. RESULTS We found that dasatinib (DAS) modulated miR-let-7d, miR-let-7e, miR-15a, miR-16, miR-21, miR-130a and miR-142-3p expressions while IM modulated miR-15a and miR-130a levels. miR-16, miR-130a and miR-145 expressions were modulated by nilotinib (NIL). We observed higher miR-15a, miR-130b and miR-145; and lower miR-16, miR-26a and miR-146a expressions in CML-CP in comparison with controls. CML-AP patients showed low miR-let-7d, miR-15a, miR-16, miR-29c, miR-142-3p, miR-145, and miR-146a levels in comparison with CML-CP. We noted that the miR-26a, miR-29c, miR-130b and miR-146a expressions were downregulated in IM resistant patients in comparison with IM responsive patients. CONCLUSIONS This study showed the modulation of apoptomiRs by BCR-ABL kinase activity and the deregulation of apoptomiRs and their predicted apoptotic target genes in different CML phases and after treatment with TK inhibitors. ApoptomiRs may be involved in the BCR-ABL(+) cell apoptosis regulation.
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Affiliation(s)
- A F Ferreira
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Brazil.
| | - L G Moura
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Brazil
| | - I Tojal
- Centro Regional de Hemoterapia de Ribeirão Preto, Brazil
| | - L Ambrósio
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Brazil
| | - B Pinto-Simões
- Departamento de Clínica Médica, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Brazil
| | - N Hamerschlak
- Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - G A Calin
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - C Ivan
- Center for RNA Interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - D T Covas
- Centro Regional de Hemoterapia de Ribeirão Preto, Brazil; Departamento de Clínica Médica, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Brazil
| | - S Kashima
- Centro Regional de Hemoterapia de Ribeirão Preto, Brazil
| | - F A Castro
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Brazil
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De Carvalho DD, Binato R, Pereira WO, Leroy JMG, Colassanti MD, Proto-Siqueira R, Bueno-Da-Silva AEB, Zago MA, Zanichelli MA, Abdelhay E, Castro FA, Jacysyn JF, Amarante-Mendes GP. BCR-ABL-mediated upregulation of PRAME is responsible for knocking down TRAIL in CML patients. Oncogene 2010; 30:223-33. [PMID: 20838376 DOI: 10.1038/onc.2010.409] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Tumor necrosis factor-related apoptosis-inducing ligand-TNFSF10 (TRAIL), a member of the TNF-α family and a death receptor ligand, was shown to selectively kill tumor cells. Not surprisingly, TRAIL is downregulated in a variety of tumor cells, including BCR-ABL-positive leukemia. Although we know much about the molecular basis of TRAIL-mediated cell killing, the mechanism responsible for TRAIL inhibition in tumors remains elusive because (a) TRAIL can be regulated by retinoic acid (RA); (b) the tumor antigen preferentially expressed antigen of melanoma (PRAME) was shown to inhibit transcription of RA receptor target genes through the polycomb protein, enhancer of zeste homolog 2 (EZH2); and (c) we have found that TRAIL is inversely correlated with BCR-ABL in chronic myeloid leukemia (CML) patients. Thus, we decided to investigate the association of PRAME, EZH2 and TRAIL in BCR-ABL-positive leukemia. Here, we demonstrate that PRAME, but not EZH2, is upregulated in BCR-ABL cells and is associated with the progression of disease in CML patients. There is a positive correlation between PRAME and BCR-ABL and an inverse correlation between PRAME and TRAIL in these patients. Importantly, knocking down PRAME or EZH2 by RNA interference in a BCR-ABL-positive cell line restores TRAIL expression. Moreover, there is an enrichment of EZH2 binding on the promoter region of TRAIL in a CML cell line. This binding is lost after PRAME knockdown. Finally, knocking down PRAME or EZH2, and consequently induction of TRAIL expression, enhances Imatinib sensibility. Taken together, our data reveal a novel regulatory mechanism responsible for lowering TRAIL expression and provide the basis of alternative targets for combined therapeutic strategies for CML.
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Affiliation(s)
- D D De Carvalho
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
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Iunes DH, Bevilaqua-Grossi D, Oliveira AS, Castro FA, Salgado HS. Análise comparativa entre avaliação postural visual e por fotogrametria computadorizada. Braz J Phys Ther 2009. [DOI: 10.1590/s1413-35552009005000039] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/28/2023] Open
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Iunes DH, Monte-Raso VV, Santos CBA, Castro FA, Salgado HS. A influência postural do salto alto em mulheres adultas: análise por biofotogrametria computadorizada. Braz J Phys Ther 2008. [DOI: 10.1590/s1413-35552008005000003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
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14
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Castro FA, Palma PVB, Morais FR, Voltarelli JC. Immunological effects of donor lymphocyte infusion in patients with chronic myelogenous leukemia relapsing after bone marrow transplantation. Braz J Med Biol Res 2004; 37:201-6. [PMID: 14762574 DOI: 10.1590/s0100-879x2004000200006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/21/2022] Open
Abstract
Allogeneic bone marrow transplantation (alloBMT) is the only curative therapy for chronic myelogenous leukemia (CML). This success is explained by the delivery of high doses of antineoplastic agents followed by the rescue of marrow function and the induction of graft-versus-leukemia reaction mediated by allogeneic lymphocytes against host tumor cells. This reaction can also be induced by donor lymphocyte infusion (DLI) producing remission in most patients with CML who relapse after alloBMT. The immunological mechanisms involved in DLI therapy are poorly understood. We studied five CML patients in the chronic phase, who received DLI after relapsing from an HLA-identical BMT. Using flow cytometry we evaluated cellular activation and apoptosis, NK cytotoxicity, lymphocytes producing cytokines (IL-2, IL-4 and IFN-gamma), and unstimulated (in vivo) lymphocyte proliferation. In three CML patients who achieved hematological and/or cytogenetic remission after DLI we observed an increase of the percent of activation markers on T and NK cells (CD3/DR, CD3/CD25 and CD56/DR), of lymphocytes producing IL-2 and IFN-gamma, of NK activity, and of in vivo lymphocyte proliferation. These changes were not observed consistently in two of the five patients who did not achieve complete remission with DLI. The percent of apoptotic markers (Fas, FasL and Bcl-2) on lymphocytes and CD34-positive cells did not change after DLI throughout the different study periods. Taken together, these preliminary results suggest that the therapeutic effect of DLI in the chronic phase of CML is mediated by classic cytotoxic and proliferative events involving T and NK cells but not by the Fas pathway of apoptosis.
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Affiliation(s)
- F A Castro
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
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15
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Castro FA, Fernandes MI, Júnior RM, Foss MC. [Study of the frequency of diabetes mellitus and glucose intolerance in patients with cystic fibrosis]. J Pediatr (Rio J) 2001; 77:321-6. [PMID: 14647865 DOI: 10.2223/jped.241] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE: To evaluate the frequency of diabetes mellitus and glucose intolerance in patients with cystic fibrosis treated at the Pediatric Gastroenterology Service of HC-FMRP-USP. METHODS: A cross-sectional analytical study was conducted on a group of 25 patients with mucoviscidosis who were followed up at HC-FMRP-USP. Oral glucose tolerance tests (OGTT) were performed, with simultaneous determination of glycemia and insulinemia. Areas under the curve were obtained for glycemia (G) and insulinemia (I) and the I/G ratio was calculated and correlated with the duration of clinical manifestation and pancreatic exocrine function. RESULTS: Five patients presented alterations: one was diabetic and four had glucose intolerance and/or hyperinsulinemia. There was a direct correlation between the area under the curve for insulinemia and the duration of mucoviscidosis. A significant inverse correlation was also observed between the area under the curve for insulinemia and I/G ratio, and number of enzyme capsules/kg/day. CONCLUSIONS: The frequency of alterations in glucose homeostasis observed in patients with mucoviscidosis was higher than in the population at large (20% of the total sample and 33% of the group of patients with glycemia and insulinemia on OGTT). Therefore, it is important that glucose tolerance tests be performed systematically in patients with mucoviscidosis so that metabolic abnormalities can be early detected, and proper treatment can be initiated.
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Affiliation(s)
- F A Castro
- Universidade de São Paulo (USP), SP, Brazil
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Abstract
Natural killer (NK) cells are CD3- CD56+ and/or CD16+ cytotoxic lymphocytes that mediate first-line defense against various types of target cells without prior immunization. To assess the effect of the menstrual cycle and gender on NK activity we evaluated 30 healthy women (mean age 28.1 years, range 21-39) in follicular and luteal phases, 29 postmenopausal women (mean age 58.8 years, range 42-72) and 48 healthy men (mean age 31.6 years, range 21-40). In a flow cytometric test of NK activity, peripheral blood mononuclear effector cells were mixed with K562 targets cells labeled with DiO (3,3'-dioctadecyloxacarbocyanine perchlorate) at effector:target cell ratios of 40, 20, 10 and 5:1. Dead cells were stained with propidium iodide and results were expressed as lytic units per 10(7) cells. In addition, progesterone levels were determined in the luteal phase of the menstrual cycle of healthy women by a chemiluminescence assay. Our results showed that (1) NK cytotoxicity was higher in the follicular than in the luteal phase of the menstrual cycle (P < 0.0001); (2) postmenopausal women and men showed NK activity similar to women in the follicular phase but higher than women in the luteal phase of the menstrual cycle (P < 0.05); and (3) there was no correlation between NK activity and levels of progesterone. The data suggest that progesterone does not influence NK activity directly and that other factors may explain the reduction of NK activity in the luteal phase of the menstrual cycle.
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Affiliation(s)
- S S Souza
- Department of Gynecology and Obstetrics, Section of Human Reproduction, School of Medicine of Ribeirão Preto, University of São Paulo, SP, Brazil
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Abstract
The antiarthritic effect of a hydroalcohol extract of Pterodon pubescens (HEPp) seeds was tested using collagen-induced arthritis (CIA) in DBA1/J mice treated with daily oral doses of HEPp in different schedules. The preventive treatment significantly reduced both the arthritic index (AI) and the CIA incidence. Using a therapeutic protocol, only the lower dose of HEPp induced a decrease in both parameters. These results provide a scientific foundation for the popular use of Pp seed infusions in rheumatoid arthritis (RA) treatment.
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Affiliation(s)
- K C Sabino
- Departamento de Bioquímica, Instituto de Biologia, Centro Biomédico, Universidade do Estado do Rio de Janeiro, 20511-013, Programa de Medicina Experimental, INCA, Rio de Janeiro, RJ, Brazil
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Carneiro SR, Castro FA, Lisbôa O, Carrara SL. Direct phase reading in two-mode fiber sensors and sensor arrays. Opt Lett 1992; 17:831-832. [PMID: 19794646 DOI: 10.1364/ol.17.000831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A novel signal-processing scheme is presented for two-mode fiber in-line interferometric sensors in which frequency shifters are used as directional couplers that provide mode coupling to form an interferometer and simultaneously transfer the optical phase shift to the interference signal at the beat frequency (a few kilohertz to hundreds of kilohertz). The phase shift can be read directly by using a two-channel lock-in amplifier or a time-interval counter. Several sensing regions can be cascaded in a single strand of fiber, and cross talk between them is below -34 dB.
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