26
|
De la Fuente JR, Aliaga C, Poblete C, Zapata G, Jullian C, Saitz C, Cañete A, Kciuk G, Sobarzo-Sanchez E, Bobrowski K. Photoreduction of Oxoisoaporphines by Amines: Laser Flash and Steady-State Photolysis, Pulse Radiolysis, and TD-DFT Studies. J Phys Chem A 2009; 113:7737-47. [DOI: 10.1021/jp901877q] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
27
|
Grill J, Perek D, Sanchez de Toledo-Codina J, Madero L, Estlin E, Cañete A, Icher C, Breazna A, Geoerger B, Cisar L, Hargrave D. Phase II single-arm study of irinotecan in combination with temozolomide in children with recurrent or refractory medulloblastoma. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.10018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
10018 Background: Irinotecan and temozolomide have demonstrated moderate single agent activity in childhood medulloblastoma (MB). Using the recommended dose established from a prior pediatric phase I study, the combination of irinotecan and temozolomide was investigated in relapsed MB. Methods: Patients aged 6 months to 18 years with radiological measurable relapsed/refractory MB were treated with temozolomide 100–125 mg/m2/day on days 1–5 orally and irinotecan 10 mg/m2/day on days 1–5 and days 8–12 intravenously. After cycle 5, patients who did not progress could receive irinotecan 125 mg/m2 once weekly on days 1 and 8 of the 3-week cycle. The primary objective was confirmed tumor response (partial or complete) after 4 cycles of treatment. According to a two-stage Optimum Simon design, at least 6 of the first 15 evaluable subjects were to have a confirmed objective response, to proceed to stage 2; a total of 19 responses in 46 subjects are required for success. A central radiological review determined tumor response in all patients. Results: Preliminary results are reported on 33 patients entered from May 2007 through to November 2008 in 19 treatment centers. The median age was 9 years (range 2 to 17 years); 23 male and 10 female. The number of relapsed patients with M3:M2:M1:M0 (Chang M stage) were 10:15:2:6, and 17 had more than 1 prior therapy. Previous treatment included chemotherapy, 7 with high-dose regimens, and craniospinal (CSI) (n=30) or posterior fossa irradiation (n=2). Central radiological review is ongoing: 16/26 reviewed patients were evaluable for response. Six patients had confirmed PR, 3 had SD, and 7 had PD. To date, 10 patients have been excluded after central review (8, poor imaging; 2, no measurable disease). Toxicity has been manageable with dose reduction required in 11/33 MB patients, all of these had received prior CSI. The study is ongoing in stage 2 and centrally verified results will be reported at the Meeting. Conclusions: This multi-centre international study is the largest phase II trial of the irinotecan and temozolomide combination in pediatric central nervous system tumors. The activity of the combination in heavily pre-treated recurrent MB patients is promising. [Table: see text]
Collapse
|
28
|
Garcia-Ortega A, Cañete A, Quintero C, Silberstein L, Gil MP, Alvarez-Dolado M, Dekel B, Gottgens B, Sanchez M. Enhanced Hemato-Vascular Contribution Of SCL-3′Enh Expressing Fetal Liver Cells Uncovers Their Potential To Integrate In Extra-Medullary Adult Niches. Stem Cells 2009; 28:100-12. [DOI: 10.1002/stem.228] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
29
|
Nonell S, Ferreras LR, Cañete A, Lemp E, Günther G, Pizarro N, Zanocco AL. Photophysics and photochemistry of naphthoxazinone derivatives. J Org Chem 2008; 73:5371-8. [PMID: 18553978 DOI: 10.1021/jo800039r] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The photophysics and photochemistry of a series of naphthoxazinones have been studied using a combination of methods ranging from steady-state and time-resolved spectroscopic techniques to product analysis. The photophysics of naphthoxazinone derivatives is very dependent on the structure: phenanthrene-like compounds exhibit higher fluorescence quantum yield than the less aromatic anthracene-like homologous. The latter, exhibit a substantial degree of charge transfer in the excited singlet state. These compounds are fairly photostable in the absence of additives, yielding a single photoproduct arising from the triplet state. The presence of electron donors such as amines increases the photoconsumption quantum yield and changes the product distribution, the primary photoproduct being a dihydronaphthoxazinone that photoreacts further yielding ultimately an oxazoline derivative.
Collapse
|
30
|
Rocco G, Toledo C, Ahumada I, Sepúlveda B, Cañete A, Richter P. Determination of polychlorinated biphenyls in biosolids using continuous ultrasound-assisted pressurized solvent extraction and gas chromatography–mass spectrometry. J Chromatogr A 2008; 1193:32-6. [DOI: 10.1016/j.chroma.2008.04.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2008] [Revised: 04/02/2008] [Accepted: 04/10/2008] [Indexed: 10/22/2022]
|
31
|
Balaguer J, Cañete A, Costa E, Oltra S, Hernández M, Castel V. Tumour banks in pediatric oncology. Clin Transl Oncol 2006; 8:884-8. [PMID: 17169761 DOI: 10.1007/s12094-006-0151-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
INTRODUCTION The information offered by the new genomic and proteomic techniques will play a central role in our knowledge of cancer; but it is limited by the lack of available tissue samples. Cancer in children is a sum of infrequent diseases, so tumor banks are support tools for translational research, providing access to a sufficiently large series of samples, which would minimize the asymmetric effect of the diverse origin. MATERIAL AND METHODS From 2003 a Molecular Pathology Network in Pediatric Solid Tumors Netwoks exists in Spain, and we are a part of it. Our aim was to create a pediatric tumor bank program and consensus documents about its use. RESULTS Standard Operating Procedures for collection and transport of samples have been created. CONCLUSIONS Thinking about the fast progress in Molecular Biology and the low frequency in pediatric tumors, it is vital to consider the importance of a bio bank.
Collapse
|
32
|
Cañete A, Meléndrez MX, Saitz C, Zanocco AL. SYNTHESIS OF AMINONAPHTHALENE DERIVATIVES USING THE BUCHERER REACTION UNDER MICROWAVE IRRADIATION. SYNTHETIC COMMUN 2006. [DOI: 10.1081/scc-100104465] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
33
|
Verdeguer A, Muñoz A, Cañete A, Pardo N, Martínez A, Donat J, Gómez P, Bureo E, Fernández JM, Cubells J, Maldonado M, Sastre A. Long-term results of high-dose chemotherapy and autologous stem cell rescue for high-risk neuroblastoma patients: a report of the Spanish working party for BMT in children (Getmon). Pediatr Hematol Oncol 2004; 21:495-504. [PMID: 15552813 DOI: 10.1080/08880010490477284] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The authors retrospectively analyzed the long-term outcome of 67 patients over 1 year of age at diagnosis with high-risk neuroblastoma (stage 4 or stage 3 with N-myc amplification) who were treated with megatherapy and stem cell rescue from 1984 to 1998. Median age at transplant was 4 years (range 1.6-15 years). The source of cells was peripheral stem cells in 29 and bone marrow in 38 patients. In 12 patients, an in vitro purging of bone marrow harvest was performed. Most patients were conditioned with melphalan, BCNU, and VM-26. After transplant 19 patients received complementary treatment with IL-2 (16) or 13-cis-retinoic acid (3). Six patients (8%) died from transplant-related toxicity and 39 from disease progression. Three patients were alive with active disease at the time of analysis. Nineteen patients are alive and disease-free at a median follow-up of 104 months. Five-year event-free survival is 0.30. Survival of patients who received a purged graft was not significantly better than the rest. Post-transplant complementary treatment significantly improved overall and event-free survival (p = .01 and p = .04, respectively).
Collapse
|
34
|
Verdeguer A, Bermudez M, De la Rubia J, Fernandez J, Cañete A, Castel V. Allogeneic PBPC transplantation in children. Cytotherapy 2003; 1:195-201. [PMID: 12881175 DOI: 10.1080/14653249910001591276] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND While PBPC are being used increasingly as a source of stem cells in allotransplantation, the published experience in pediatric donor-recipient pairs is limited. Our aim was to evaluate the mobilization of PBPC in healthy child donors and the outcome of child recipients undergoing allogeneic PBSC transplant. METHODS Eight children with malignancies AML (one), refractory anemia with excess blasts in transformation (RAEBt) (one), ALL (four), NHL (one) and neuroblastoma (one)] were grafted with PBPC from HLA-identical sibling donors (seven patients) or from a 2-antigen mismatched donor (one case). Donors, aged 1-15 years underwent leukapheresis after mobilization with G-CSF (10-15 g/kg/day, 4 days). The extracorporeal line was primed in five cases (four with HSA). Peripheral venous access was used in all except one infant. The harvests were cryopreserved in six cases. GvHD prophylaxis consisted of CsA plus MTX or methylprednisolone. RESULTS No adverse effects related to G-CSF administration, nor procedure-related complications were observed. Median number of CD34(+) cells harvested was 5.18 x 10(6)/kg (range, 2.56-6.40), after one (five cases) or two (three cases) leukaphereses. All patients engrafted. The median time to achieve an ANC > 0.5 x 10(9)/L was 11 days (range 9-13) and a platelet count of > 50 x 10(9)/L was 18 days (range 13-45). Six patients did not develop any acute GvHD and three developed chronic GvHD. After a median follow-up of 18 months (14-44 months), six patients are alive and five in complete remission. DISCUSSION Allogeneic PBPC transplantation has shown to be a safe and successful procedure for pediatric donor and recipient pairs.
Collapse
|
35
|
Hervás I, Bello P, Fernández JM, González-Cabezas P, Flores D, Torres MJ, Cañete A, Pérez-Velasco R, Rivas A, Alonso J, Castel V, Mateo A. [Bone scintigraphy and somatostatin receptor scintigraphy in pediatric patients with bone involvement in Langerhans cell histiocytosis]. ACTA ACUST UNITED AC 2003; 22:367-75. [PMID: 14588229 DOI: 10.1016/s0212-6982(03)72220-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Langerhans cell histiocytosis (LCH) is a granulomatous disease which can involve multiples sites of the body. Diagnostic imaging is of utmost importance in the management of these patients. Up to now radiographic skeletal survey and bone scintigraphy (BS) have been used to assess bone involvement (both with low specificity). Magnetic resonance imaging (MRI) and CT have been used to assess visceral involvement but with the limitation that they cannot give information about the functional status. Recently somatostatin receptor scintigraphy (SSRS) has been proposed to detect active lesions and to monitor response to treatment. The aim of this study is to assess bone and somatostatin receptor scintigraphy in the detection of bone involvement in LCH in children. Twenty scintigraphies (12 SSRS and 8 BS) were performed in seven patients (3 girls and 4 boys) aged at diagnosis: 18 month-12 years (mean age 6 years). The findings obtained in the scintigraphies were compared with clinical evolution and other imaging techniques. Bone scintigraphy detected all the LCH bone lesions, and discovered one unknown lesion. SSRS scintigraphy visualised the active lesions in 3 patients (clinical and other imaging techniques were also positive). SSRS was negative in one patient classified as disease free and another in clinical remission. SSRS detected 2 new unknown bone lesions, but could not detect LCH bone lesions confirmed in other imaging techniques in 2 patients. Somatostatin receptor and Bone scintigraphy can be used to detect active LCH bone lesions in children and can help to monitor response to treatment. Further studies with more patients are needed to confirm the diagnostic usefulness of these techniques.
Collapse
|
36
|
Oltra S, Martínez F, Orellana C, Grau E, Fernández JM, Cañete A, Castel V. Minimal Residual Disease in Neuroblastoma: To GAGE or not to GAGE. Oncol Res 2003; 14:291-5. [PMID: 15206491 DOI: 10.3727/096504003773994824] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
We assessed the utility of GAGE gene expression as a marker of minimal residual disease (MRD) in neuroblastoma. The GAGE gene family shows a high degree of homology (>90%), clustering into two subgroups. GAGE-1, -2, and -8 form one subset, almost identical among themselves, while GAGE-3 to -7 constitute the other subset. The entire GAGE family (GAGE-1-8) was studied by RT-PCR followed by Southern blotting to increase both the sensitivity and specificity of the technique. Surprisingly, expression of GAGE was detected in 59% of peripheral blood samples from normal controls (20/35) as well as in a similar proportion from neuroblastoma patients with localized disease (stages 1 and 2). The study of GAGE-1, -2, and -8 with specific primers lowered this percentage to 28% (10/35), of which only two (6%) showed a high level of expression (directly visualized after RT-PCR). We conclude that GAGE genes can show a variable, usually low level of illegitimate expression in normal blood cells, and therefore their use as MRD markers should be taken with caution.
Collapse
|
37
|
Alvarez Calatayud G, Bermejo F, Morales JL, Claver E, Huber LB, Abunaji J, Cañete A, Boixeda D. Acute pancreatitis in childhood. REVISTA ESPANOLA DE ENFERMEDADES DIGESTIVAS : ORGANO OFICIAL DE LA SOCIEDAD ESPANOLA DE PATOLOGIA DIGESTIVA 2003; 95:40-4, 45-8. [PMID: 12760729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
AIM to evaluate etiological agents involved in acute pancreatitis in children, as well as clinical, laboratory and radiological findings and the illness clinical course. PATIENTS AND METHODS we reviewed the cases of acute pancreatitis diagnosed over the last 15 years. The criteria used for cases to be included were acute abdominal pain, elevated serum amylase levels and/or ultrasound abnormalities in the pancreatic area in conscious patients, and the last two criteria in unconscious patients. RESULTS thirty-one children were included (average age 7.9 years, range 2-15; 55% males). Infection and gallstones were the most common causes (19 and 16 %, respectively). In all, 9.7% of cases were drug-related (valproic acid, L-asparaginase, azathioprine combined with high doses of methylprednisolone); 6.5% were traumatic in origin and another 6.5% was due to systemic diseases. In 35.5 % no cause was found (idiopathic). The most frequent symptoms were abdominal pain (90%) and emesis (38%). Amylase serum levels were elevated in all patients. Abdominal ultrasound scans were abnormal in 64%, with an increase in the pancreatic area in 48% and hypoechogenicity in 51%. Seven cases required surgical treatment (22%). Seven children had acute pancreatitis, and three of them died as a result of shock unrelated to pancreatitis. Relapse of disease occurred in 19% of patients. CONCLUSIONS acute pancreatitis should always be considered in children with abdominal pain. There are a wide variety of etiological factors and in a high percentage of patients no underlying cause is found. Prognosis is variable owing to the heterogeneity of the clinical course of this illness in children.
Collapse
|
38
|
Castel V, Tovar JA, Costa E, Cuadros J, Ruiz A, Rollan V, Ruiz-Jimenez JI, Perez-Hernández R, Cañete A. The role of surgery in stage IV neuroblastoma. J Pediatr Surg 2002; 37:1574-8. [PMID: 12407542 DOI: 10.1053/jpsu.2002.36187] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND/PURPOSE The importance of primary tumor resection in stage IV neuroblastoma is controversial. The authors analyzed prospectively the role of surgery in a multicentric series of stage IV neuroblastoma patients. METHODS Patients were studied according to the International Neuroblastoma Staging System (INSS) recommendations. Age, sex, location of the tumor, type of metastases, time of resection (initial or delayed), extension of resection, surgical complications, pathology, N-myc and Shimada classification results, relapses, and outcome were studied. After diagnosis, children received induction chemotherapy followed by delayed surgery and autologous stem cell transplantation or maintenance chemotherapy. Resection was classified as complete (C), greater than 90% (P1), greater than 50% (P2), less than 50% (P3), and biopsy (B). RESULTS Ninety-eight stage IV children were admitted in the study from June 1992 to July 1999. Seventy-six were older than one year, and in 78 the primary tumor was abdominal. Bone was the most common metastatic site followed by bone marrow. Initial biopsy was performed in 74 patients, and resection in 6, with one complication in each group. N-myc was amplified in 20 of 80 tumors, and Shimada was unfavorable in 45 of 67. Delayed surgery was performed in 70 cases, achieving gross total resection in 55 (79%); there were minor complications in 10%. Mean survival rate time was 50 months. Event-free survival rate (EFS) at 5 years for the entire series is 0.32, but 0.0 for children having biopsy only, 0.25 for less than 50% resection, 0.31 for 50% to 90% resection, 0.44 for greater than 90% resection, and 0.33 for complete resection. Differences were statistically significant only when compared with the biopsied group. EFS rate for infants was 0.56, but, again, there was no difference in relation to the type of resection. There were 46 relapses, 12 of them local, 7 of 20 N-myc-amplified tumors, and 4 of 60 not amplified (P <.005). CONCLUSIONS Biopsies of stage IV neuroblastoma allow safe assessment of N-myc and other biological factors on tumor tissue. Delayed surgery after chemotherapy is performed with a low rate of complications, achieving a good local control of disease. N-myc-amplified tumors have higher local relapse rates than nonamplified and therefore would need more intensive local treatment. The final outcome in these patients is determined more by metastatic relapses than by the degree of resection.
Collapse
|
39
|
De la Fuente JR, Cañete A, Saitz C, Jullian C. Photoreduction of 3-Phenylquinoxalin-2-ones by Amines: Transient-Absorption and Semiempirical Quantum-Chemical Studies. J Phys Chem A 2002. [DOI: 10.1021/jp014317c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
40
|
Carvajal E, Verdeguer A, Fernández JM, Cañete A, Castel V. Herpesvirus-6 encephalitis complicated by Wernicke-Korsakoff syndrome in a pediatric recipient of unrelated cord blood transplantation. J Pediatr Hematol Oncol 2001; 23:626-8. [PMID: 11902311 DOI: 10.1097/00043426-200112000-00016] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A 10-year-old girl with M2 acute myeloid leukemia underwent an unrelated cord blood transplantation in refractory first relapse. On day +13, after 48 hours with fever, she showed a measles-like rash, and on day +15, she began experiencing neurologic symptoms (headache, tremors, weakness, nystagmus, mild confusion, speaking, taste, and behavior disturbances, and focal seizures). She also had amnesia for recent events with disability to learn, mimicking Wernicke-Korsakoff syndrome. Computed tomography of the brain and cerebrospinal fluid (CSF) and electroencephalogram were nonspecific. We found human herpesvirus 6 (HHV-6) DNA in CSF and cytomegalovirus in bronchoalveolar lavage using polymerase chain reaction techniques. Treatment with ganciclovir and foscarnet was effective, with total resolution of symptoms.
Collapse
MESH Headings
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Antiviral Agents/therapeutic use
- Child
- Combined Modality Therapy
- Cytarabine/administration & dosage
- Daunorubicin/administration & dosage
- Encephalitis, Viral/drug therapy
- Encephalitis, Viral/etiology
- Etoposide/administration & dosage
- Fatal Outcome
- Female
- Fetal Blood/cytology
- Foscarnet/therapeutic use
- Ganciclovir/therapeutic use
- Hematopoietic Stem Cell Transplantation/adverse effects
- Herpesvirus 6, Human/isolation & purification
- Herpesvirus 6, Human/physiology
- Humans
- Immunocompromised Host
- Korsakoff Syndrome/etiology
- Leukemia, Myeloid, Acute/complications
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/therapy
- Recurrence
- Roseolovirus Infections/drug therapy
- Roseolovirus Infections/etiology
- Transplantation Conditioning/adverse effects
- Transplantation, Homologous/adverse effects
- Virus Activation
Collapse
|
41
|
Castel V, Cañete A, Navarro S, García-Miguel P, Melero C, Acha T, Navajas A, Badal MD. Outcome of high-risk neuroblastoma using a dose intensity approach: improvement in initial but not in long-term results. MEDICAL AND PEDIATRIC ONCOLOGY 2001; 37:537-42. [PMID: 11745893 DOI: 10.1002/mpo.1248] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Stage 4 and MYCN amplified (MNA) neuroblastoma in children have a poor prognosis. Our aim was to increase initial and long-term response in this population. PROCEDURE High-risk children were studied according to the International Neuroblastoma Staging System, then treated with high-dose cyclophosphamide and high-dose carboplatin, followed by surgery and autologous stem cell transplant or maintenance chemotherapy. RESULTS From June 1992 to December 1998, 83 children were admitted in the study (72 stage 4> 1 year, 5 stage 4 MNA infants, and 6 MNA stage 3 children); tumor tissue was obtained from 73, MYCN was performed in 65, being amplified in 21 (32%). Induction chemotherapy was administered in the expected time in 35% of patients. Its toxicity was mainly hematologic followed by infections, and there were 3 chemotherapy-related deaths. Delayed surgery was performed on 60 patients with complete or >90% resection in 80% of cases. Chemotherapy plus surgery produced some response in 90% of patients, 53% were in CR/VGPR; 49 children received autologous SCT, and 16 received maintenance chemotherapy for 9 months. Follow-up ranges are 1-87 months, mean 30 months. S and EFS at 4 years are 0.33 (SD 0.02). CONCLUSIONS High-dose cyclophosphamide and high-dose carboplatin are effective in the initial treatment of neuroblastoma; combined with surgery they produce some response in most patients. Nevertheless, the CR/VGPR rate reaches only 53%. Survival time has also been prolonged but most patients relapse with metastases.
Collapse
|
42
|
Hervás Benito I, Rivas Sánchez A, Bello Arques P, Cañete A, Fernández JM, Saura Quiles A, González Cabezas P, Ruiz Rodríguez JC, Castell V, Pérez Pastor JL, Monfort JA, Mateo Navarro A. [Value of 123I-MIBG scanning, neuron-specific enolase and serum ferritin in the diagnosis and follow-up of patients with neuroblastoma]. REVISTA ESPANOLA DE MEDICINA NUCLEAR 2001; 20:369-76. [PMID: 11470071 DOI: 10.1016/s0212-6982(01)71976-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
INTRODUCTION The neuroblastoma (NB) is one of the most common pediatric malignant neoplasms. The most commonly used tumor markers in the diagnosis and follow-up of this tumor are the serum neuron-specific enolase (NSE), ferritin and lactic dehydrogenase and urinary vanillymandelic and homovanillic acid. The common imaging modalities are CT, MRI and 123I or 131I-meta-iodobenzylguanidine scintigraphy. AIM The aim of this study is to assess the value of 123I-meta-iodobenzylguanidine (MIBG) scintigraphy and serum determinations of NSE and ferritin in the diagnosis and evolution of NB patients. MATERIAL AND METHODS 20 patients (8 female, 12 male) whose ages ranged from 2 months to 9 years with a mean age of 2.64 years diagnosed of NB. 47 123I-MIBG scans, 47 NSE determinations and 47 ferritin ones were selected. RESULTS At the time of diagnosis, 100% of the 123I-MIBG scans were positive. 65% of NSE determinations presented clearly pathological levels and 15% were very near to the cut-off point. Only 45% of the ferritin levels were increased. The differences between the lesions visible by 123I-MIBG scanning before and 3 months after treatment as well as NSE and ferritin levels were studied. When the Student's T test was applied, we found statistically significant pre and post-treatment differences in 123I-MIBG scanning and NSE. In the case of ferritin, there was no statistical significance in spite of the decrease in the values. The direct correlation and Spearman correlation between laboratory data and 123I-MIBG scanning as well as correlation between NSE and ferritin were also studied. There was a good correlation between 123I-MIBG and NSE and between NSE and ferritin. We have also studied the data in 7 relapses. CONCLUSIONS 123I-MIBG scintigraphy and serum determination of NSE are two successful diagnostic tools for the diagnosis and evolution of NB patients.
Collapse
|
43
|
Saitz C, Rodríguez H, Márquez A, Cañete A, Jullian C, Zanocco A. NEW SYNTHESIS OF NAPHTHO- AND BENZOXAZOLES: DECOMPOSITION OF NAPHTHO- AND BENZOXAZINONES WITH KOH. SYNTHETIC COMMUN 2001. [DOI: 10.1081/scc-100000190] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
44
|
Castel V, Cañete A, Melero C, Acha T, Navajas A, García-Miguel P, Contra T, Molina J, Galarón P, Cruz O. Results of the cooperative protocol (N-III-95) for metastatic relapses and refractory neuroblastoma. MEDICAL AND PEDIATRIC ONCOLOGY 2000; 35:724-6. [PMID: 11107156 DOI: 10.1002/1096-911x(20001201)35:6<724::aid-mpo53>3.0.co;2-u] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND Prognosis of relapsed and refractory neuroblastoma is uniformly fatal; new therapeutic approaches are needed. PROCEDURE Relapsed and refractory neuroblastoma patients were treated with continuous infusion chemotherapy combined with MIBG. RESULTS Over 4 years, 35 heavily pretreated patients were registered, 29 with bone or/and bone marrow metastases. Grade 3 or 4 hematologic toxicity was frequent, without toxic deaths. Sixteen patients responded. The probability of 5-year overall survival was 0.19. CONCLUSIONS This approach is feasible and toxicity manageable; it rescued some patients and prolonged their survival. It merits assay in newly diagnosed high-risk neuroblastoma patients.
Collapse
|
45
|
Cañete A, Navarro S, Bermúdez J, Pellín A, Castel V, Llombart-Bosch A. Angiogenesis in neuroblastoma: relationship to survival and other prognostic factors in a cohort of neuroblastoma patients. J Clin Oncol 2000; 18:27-34. [PMID: 10623690 DOI: 10.1200/jco.2000.18.1.27] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE To study angiogenesis in neuroblastoma, using morphometric and computerized image analysis, and correlate the results with survival and other prognostic factors. PATIENTS AND METHODS Sixty-nine patients from the Spanish Cooperative Study for Neuroblastoma were studied. Tumoral angiogenesis was studied using an avidin-biotin immunoperoxidase technique with an anti-CD34 antibody. Vascular parameters (VPs) were analyzed by a computerized system. Statistical analysis was also performed. RESULTS Sixty-six samples had adequate tumoral tissue, and their tumoral vessels were counted. Endothelial cells were more prominent in pure neuroblastomas than in maturing and more mature tumors. VPs showed no statistical difference between the groups of patients as defined by the levels of the other prognostic factors in neuroblastoma: age, stage, histopathology, TRK-A, P-glycoprotein expression, or MYCN copy number. In patients who relapsed, tumors did not show statistically significant difference in VPs when compared with tumors from patients who did not relapse. There was also no difference in VPs in tumors from living patients when compared with tumors from deceased patients. Overall survival was 75%, and event-free survival was 55% at 50 months. CONCLUSION VPs could be adequately determined by a computerized system in neuroblastoma; however, VPs were not predictive of survival for our patients. In our patients, neither disseminated nor local relapses were influenced by the angiogenic characteristics of the tumors.
Collapse
|
46
|
Castel V, García-Miguel P, Cañete A, Melero C, Navajas A, Ruíz-Jiménez JI, Navarro S, Badal MD. Prospective evaluation of the International Neuroblastoma Staging System (INSS) and the International Neuroblastoma Response Criteria (INRC) in a multicentre setting. Eur J Cancer 1999; 35:606-11. [PMID: 10492635 DOI: 10.1016/s0959-8049(98)00395-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The aim of this study was to classify prospectively a series of neuroblastoma tumours according to the International Neuroblastoma Staging System (INSS) and the International Neuroblastoma Response Criteria (INRC) and to evaluate the difficulties and pitfalls involved in a multicentre setting. Each hospital provided their data for central review. The surgical procedures and their complications were reported. Kaplan-Meier estimates of survival and event-free survival were calculated according to stage and response to therapy. From June 1992 to December 1996, 194 patients were included in the study, with a mean age of 2 years. Initial studies were performed according to INSS recommendations without major problems. INSS stage was correctly applied to all patients except for 9 (95%). Post-operative complications were observed in 15 patients (8.3%). Response to therapy (INRC) was studied in 63 stage 4 patients, 11 of whom were not classified correctly (17%). Differences in survival according to stage (INSS) and group of response to therapy (INRC) were statistically significant (P < 0.001). In conclusion the INSS was easy to use and separated different prognostic groups. Surgical complications and mortality did not increase in this series because of using the INSS. The feasibility of INRC was evaluated in a small series of stage 4 patients and the designation of response was problematic in a relatively high proportion of cases. The prognostic value of the different responses was highly significant, but less informative than had been hoped for.
Collapse
|
47
|
Cañete A, Jovani C, Lopez A, Costa E, Segarra V, Fernández JM, Verdeguer A, Velázquez J, Castel V. Surgical treatment for neuroblastoma: complications during 15 years' experience. J Pediatr Surg 1998; 33:1526-30. [PMID: 9802806 DOI: 10.1016/s0022-3468(98)90490-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND/PURPOSE Surgery plays an important role in neuroblastoma treatment. Although influence of resectability in survival has been studied deeply, reports about surgical complications are scant. The authors analyze retrospectively their experience in neuroblastomas (NB) diagnosed from 1980 to 1995. METHODS Clinical variables such as age, stage, location, presurgical chemotherapy, type, and extent of surgery were studied. Complications were classified according to the following criteria: time, type of surgery, and extent of resection. RESULTS Seventy-eight NB patients had surgery performed in our hospital. Mean age at diagnosis was 2.4 years (range, 0 to 11 years); 33 patients were under 1 year of age. Sixty-eight percent of the patients had advanced disease. Abdominal tumors were predominant. Sixty-three percent of the patients had chemotherapy before surgery, with shrinkage of the tumor in most of the cases (88%). Eighty-six surgical procedures were performed, 29 initially and 57 delayed. Complete resection was reached in 52 patients, partial in 19 patients, and seven patients underwent biopsy only. There were 42 surgical complications. Three of them were considered extremely serious (one death caused by cardiac arrest, one tumoral rupture, and one great vessel injury). Nephrectomies (n = 12) were the most frequent intraoperatory complications. Bernard-Horner syndrome (n = 5) and pleural effusions (n = 5) predominated in the postoperative period. CONCLUSIONS (1) Surgery in NB can be performed safely. (2) Nephrectomies can be necessary to achieve complete resection in some abdominal tumors. (3) Nephrectomies, Bernard-Horner syndrome, and pleural effusions were the most frequent complications in our patients. (4) Presurgical chemotherapy can lead to a wider and safer removal of locally advanced tumors.
Collapse
|
48
|
Orellana C, Martínez F, Hernandez-Marti M, Castel V, Cañete A, Prieto F, Badía L. A novel TP53 germ-line mutation identified in a girl with a primitive neuroectodermal tumor and her father. CANCER GENETICS AND CYTOGENETICS 1998; 105:103-8. [PMID: 9723024 DOI: 10.1016/s0165-4608(98)00015-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A search of TP53 mutations was undertaken in a series of 51 pediatric brain tumors. The only germ-line mutation was detected in a 9-year-old girl with a PNET. Her family history was unremarkable for neoplastic disease, except for the paternal grandfather, who died of a gallbladder carcinoma at an advanced age. The mutation was a thymine deletion at the first base of codon 241, leading to termination codon at position 246 that has not previously been reported. This mutation was found to be inherited from the proband's father, who was healthy at age 40. In the tumoral sample, loss of heterozygosity in several 17p markers was found, the only TP53 allele preserved in the tumor was the mutated one. The presence of two short tandem repeats and two different palindromic sequences spanning the deletion lead us to propose the predisposition of this region to forming a complex secondary structure during replication. Consequently, it could have facilitated the present deletion. Furthermore, six other short deletions affecting--partially or totally--the region implicated in the folding model that we propose have been described in the literature. These findings confirm that this sequence represents a hotspot of deletion in the TP53 gene.
Collapse
|
49
|
Quiroga J, Hormaza A, Insuasty B, Saitz C, Cañete A, Jullian C. Synthesis of pyrazolo[1,5-a]pyrimidines in the reaction of 5-amino-3-arylpyrazoles with methoxymethylene meldrum's acid derivatives and thermolysis of their pyrazolylaminomethylene derivatives. J Heterocycl Chem 1998. [DOI: 10.1002/jhet.5570350112] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
50
|
López Saiz A, Fernández MS, Segarra V, Costa E, Muro MD, García A, Cañete A, Velázquez J. [Solid ovarian tumors in childhood]. CIRUGIA PEDIATRICA : ORGANO OFICIAL DE LA SOCIEDAD ESPANOLA DE CIRUGIA PEDIATRICA 1997; 10:104-7. [PMID: 9376232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We evaluate our experience in solid ovarian tumors at the Children's Hospital La Fe. The main aims of the study were finding out relevant clinical data for a correct clinical approach, and the optimal surgical attitude in order to obtain tumor relieving with preservation of fertility when possible. A review of 28 girls under 14 years with solid ovarian tumors was carried out. Previous history, initial symptoms and signs, analytical and radiological explorations, treatment and evolution were analysed. 17 benign and 11 malignant tumors were found. Main clinical data were acute abdominal pain and palpation of a mass. Surgery was performed in all of them: salpyngo-oophorectomy in 23 and oophorectomy in 5, with tumoral resection. All patients survive, with periodic follow-up. We remark the frequency of acute abdominal pain as initial symptom of an ovarian tumor, and the importance of a surgical attitude that, intending to be curative, would preserve fertility.
Collapse
|