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Daudén E, Vidal D, Romero A, Bordel MT, Rivera R, Márquez J, Zamora E, Martinez L, Ocaña MJ, Vila C, Iribarren P, Corona N, Zulaica A. Psoriasis Severity, Health-Related Quality of Life, Work Productivity, and Activity Impairments Among Patients With Moderate to Severe Psoriasis Receiving Systemic Treatment: Real-World Data From Clinical Practice in Spain. Actas Dermosifiliogr 2024; 115:1-9. [PMID: 37429433 DOI: 10.1016/j.ad.2023.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/14/2023] [Accepted: 07/04/2023] [Indexed: 07/12/2023] Open
Abstract
BACKGROUND AND OBJECTIVE The treatment of psoriasis should not only focus on skin affectations but also weigh the parameters for health-related quality of life (HRQoL), thereby tackling the concept of cumulative life course impairment (CLCI) and treating the patient from a holistic perspective. The CRYSTAL study aimed to characterize psoriasis with real-word data from Spanish clinical practice in patients with moderate to severe disease who received continuous systemic treatment for at least 24 weeks by using the absolute Psoriasis Area and Severity Index (PASI) score and its correlation to HRQoL. MATERIAL AND METHODS This was a non-interventional, cross-sectional study conducted in 30 centers in Spain, with 301 patients between the ages of 18 and 75 years. The study collected data regarding current treatment and absolute PASI and their relationship to HRQoL using the Dermatology Life Quality Index (DLQI), to activity impairment using the Work Productivity and Activity Impairment (WPAI) questionnaire, and to treatment satisfaction. RESULTS The mean (SD) age was 50.5 (12.5) years, with a duration of disease of 14 (14.1) years. The mean (SD) absolute PASI reported was 2.3 (3.5), with 28.7% of patients presenting with PASI from >1 to ≤3 and 22.6% with PASI>3. Higher PASI scores were associated with higher DLQI (p<0.001) and WPAI scores and lower levels of treatment satisfaction (p<0.001). CONCLUSIONS These data indicate that achieving lower absolute PASI values may correlate not only with better HRQoL but also with better work productivity and treatment satisfaction.
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Affiliation(s)
- E Daudén
- Dermatology Department, IIS-IP, Hospital Universitario La Princesa, Madrid, Spain
| | - D Vidal
- Dermatology Department, Hospital Moisés Broggi, Barcelona, Spain
| | - A Romero
- Dermatology Department, Hospital de Fuenlabrada, Madrid, Spain
| | - M T Bordel
- Dermatology Department, Hospital Provincial de Zamora, Zamora, Spain
| | - R Rivera
- Dermatology Department, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - J Márquez
- Dermatology Department, Hospital Universitario de Jerez de la Frontera, Jerez de la Frontera, Spain
| | - E Zamora
- Dermatology Department, Hospital Universitario de Móstoles, Madrid, Spain
| | - L Martinez
- Dermatology Department, Hospital Regional Universitario de Málaga, Málaga, Spain
| | - M J Ocaña
- Dermatology Department, Hospital Universitario San Agustín de Linares, Jaén, Spain
| | - C Vila
- Dermatology Department, Hospital Universitario Juan Ramón Jiménez, Huelva, Spain
| | - P Iribarren
- Medical Department, AbbVie Spain, S.L.U., Madrid, Spain
| | - N Corona
- Medical Department, AbbVie Spain, S.L.U., Madrid, Spain
| | - A Zulaica
- Dermatology Department, Complejo Hospitalario Universitario de Vigo (CHUVI), Vigo, Spain.
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Daudén E, Vidal D, Romero A, Bordel MT, Rivera R, Márquez J, Zamora E, Martinez L, Ocaña MJ, Vila C, Iribarren P, Corona N, Zulaica A. Psoriasis Severity, Health-Related Quality of Life, Work Productivity, and Activity Impairments Among Patients With Moderate to Severe Psoriasis Receiving Systemic Treatment: Real-World Data From Clinical Practice in Spain. Actas Dermosifiliogr 2024; 115:T1-T9. [PMID: 37923068 DOI: 10.1016/j.ad.2023.10.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 07/04/2023] [Indexed: 11/07/2023] Open
Abstract
BACKGROUND AND OBJECTIVE The treatment of psoriasis should not only focus on skin affectations but also weigh the parameters for health-related quality of life (HRQoL), thereby tackling the concept of cumulative life course impairment (CLCI) and treating the patient from a holistic perspective. The CRYSTAL study aimed to characterize psoriasis with real-word data from Spanish clinical practice in patients with moderate to severe disease who received continuous systemic treatment for at least 24 weeks by using the absolute Psoriasis Area and Severity Index (PASI) score and its correlation to HRQoL. MATERIAL AND METHODS This was a non-interventional, cross-sectional study conducted in 30 centers in Spain, with 301 patients between the ages of 18 and 75 years. The study collected data regarding current treatment and absolute PASI and their relationship to HRQoL using the Dermatology Life Quality Index (DLQI), to activity impairment using the Work Productivity and Activity Impairment (WPAI) questionnaire, and to treatment satisfaction. RESULTS The mean (SD) age was 50.5 (12.5) years, with a duration of disease of 14 (14.1) years. The mean (SD) absolute PASI reported was 2.3 (3.5), with 28.7% of patients presenting with PASI from >1 to ≤3 and 22.6% with PASI>3. Higher PASI scores were associated with higher DLQI (p<0.001) and WPAI scores and lower levels of treatment satisfaction (p<0.001). CONCLUSIONS These data indicate that achieving lower absolute PASI values may correlate not only with better HRQoL but also with better work productivity and treatment satisfaction.
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Affiliation(s)
- E Daudén
- Dermatology Department, IIS-IP, Hospital Universitario La Princesa, Madrid, España
| | - D Vidal
- Dermatology Department, Hospital Moisés Broggi, Barcelona, España
| | - A Romero
- Dermatology Department, Hospital de Fuenlabrada, Madrid, España
| | - M T Bordel
- Dermatology Department, Hospital Provincial de Zamora, Zamora, España
| | - R Rivera
- Dermatology Department, Hospital Universitario 12 de Octubre, Madrid, España
| | - J Márquez
- Dermatology Department, Hospital Universitario de Jerez de la Frontera, Jerez de la Frontera, España
| | - E Zamora
- Dermatology Department, Hospital Universitario de Móstoles, Madrid, España
| | - L Martinez
- Dermatology Department, Hospital Regional Universitario de Málaga, Málaga, España
| | - M J Ocaña
- Dermatology Department, Hospital Universitario San Agustín de Linares, Jaén, España
| | - C Vila
- Dermatology Department, Hospital Universitario Juan Ramón Jiménez, Huelva, España
| | - P Iribarren
- Medical Department, AbbVie Spain, S.L.U., Madrid, España
| | - N Corona
- Medical Department, AbbVie Spain, S.L.U., Madrid, España
| | - A Zulaica
- Dermatology Department, Complejo Hospitalario Universitario de Vigo (CHUVI), Vigo, España.
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Castañeda S, Vicente E, Llamas Velasco M, Sanchez Perez J, Pardo J, Cabeza-Martínez R, Miranda-Fontes M, Márquez J, Calvo J, Armesto S, Belinchón I, Gómez A, Miranda MD, Martinez Pardo S, Merino-Meléndez L, Casado MA, Yébenes M, Casado A. OP0262-HPR COST OF ILLNESS IN PATIENTS WITH PSORIASIS AND PSORIATIC ARTHRITIS. COEPSO STUDY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3298] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Psoriasis (Ps) and psoriatic arthritis (PsA) have a major impact on patients’ health-related quality of life. Cost of illness of patients with Ps, PsA and both diseases (PsA+Ps) is an important subject as they are associated with a substantial economic impact, with implications from a health management perspective.Objectives:To describe the economic burden of direct non-healthcare and indirect resources of patients with Ps, PsA and PsA+Ps in Spain.Methods:COEPSO (“Evaluation of Costs in patients with Psoriatic Disease”) was an observational, retrospective, cross-sectional study performed in 22 Spanish centers (17 Dermatology and 14 Rheumatology Services), from February 2017 to February 2018, including moderate to severe Ps and PsA patients (with or without Ps), naive to biologics. Direct non-healthcare (social services, home care, physical adaptations, private health and non-health professionals, non-reimbursed and non-pharmaceutical therapies), indirect (loss of productivity) and total costs (direct non-healthcare and indirect costs) related to the disease during the previous year to the study were obtained. Unitary costs (€, 2018) were calculated: out-of-pocket costs were specified directly by patients and loss of productivity costs by means of average salaries based on occupation specified by patients. The information was collected through a case report form filled out by the investigators and a telephone survey administered to the patients.Results:A total of 318 patients were included (196 Ps; 43 PsA and 79 PsA+Ps), mean age 48.7 years and 51.3% males. Metabolic syndrome was the most frequent comorbidity in all groups. The average annual total cost per patient was 1,042.71€ (SD 3,817.55), 1,137.84€ (SD 3,070.39) and 1,830.26€ (SD 5,835.81) for Ps, PsA and PsA+Ps, respectively. The average annual direct non-healthcare cost per patient was 749.57€ (SD 2,393.77), 750.50€ (SD 1,641.82) and 1,247.56€ (SD 4,467.19) for Ps, PsA and PsA+Ps, respectively. The average annual indirect cost per patient was 293.14€ (SD 2,855.27), 387.35€ (SD 2,409.63) and 582.71€ (SD 3,842.12) for Ps, PsA and PsA+Ps, respectively.Patients with combined PsA+Ps had higher annual total cost (direct non-healthcare and indirect costs) than patients with only one of these manifestations separately (75.5% and 60.9% above patients with Ps and PsA, respectively). Total costs in patients with Ps and PsA were similar. Direct non-healthcare costs represent between 66.0% (patients with PsA) to 71.9% (patients with Ps) of total cost. Indirect costs represent between 28.1% (patients with Ps) to 34.0% (patients with PsA) of total cost.Conclusion:PsA and Ps have proved to be diseases with a high economic burden, and the total costs were mainly driven by direct non-healthcare costs. Moreover, although annual total costs in patients with PsA were similar to those of Ps patients, the combination of both manifestations yielded the highest costs suggesting the importance of the increased disease load.Disclosure of Interests:Santos Castañeda: None declared, Esther Vicente Speakers bureau: BMS, Roche., Mar Llamas Velasco: None declared, Javier Sanchez Perez: None declared, José Pardo: None declared, Rita Cabeza-Martínez: None declared, Mercedes Miranda-Fontes: None declared, Juan Márquez: None declared, Jaime Calvo Grant/research support from: Lilly, UCB, Consultant of: Abbvie, Jansen, Celgene, susana armesto: None declared, Isabel Belinchón: None declared, Alejandro Gómez: None declared, María Dolores Miranda: None declared, Silvia Martinez Pardo: None declared, Leticia Merino-Meléndez: None declared, Miguel Angel Casado Consultant of: UCB Pharma, María Yébenes: None declared, Araceli Casado: None declared
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Garcia-Rodriguez J, Fernandez-Gomez J, Cozar J, Miñana B, Gomez-Veiga F, Rodriguez-Antolin A, Pórtela P, Blanco E, González J, Baena V, Morales P, Villavicencio H, Palou J, Loizaga A, Ciudin A, Mihai D, Martínez Jabaloyas J, Castelló A, Díez N, Romero F, Subirá J, Chávez A, Capapé V, Mata M, Elizalde J, Lobato J, Jiménez J, Pérez Llorca L, Tenza J, Herranz F, Husillos A, López E, Ramírez D, Blaha I, Izquierdo E, Reina L, Passas J, Díez L, Hevia M, Castells M, Concepción Masip T, Plata A, Asuar Aydillo S, Alonso J, Mateos J, Carballido J, Martínez C, Areche J, Rodríguez R, Hevia V, Álvarez S, Requena M, Prieto R, Carazo J, Márquez J, Gómez E, García J, Amón J, Cepeda M, Álvarez L, Rodríguez V, de la Cruz B, Rivero A, Sánchez J, Mainez J, Medina R, Conde M, Castiñeiras J, González Baena A, Sánchez E, Campanario R, Saiz R, Romero E, Morote J, Raventós C, Celma A, Vázquez F, Gómez A, Buendía E, García N. Androgen deprivation therapy in patients with localized disease: Comparison with curative intent treatments and time to castration resistance. Results of the Spanish Prostate Cancer Registry. Actas Urol Esp 2020; 44:156-163. [PMID: 32113829 DOI: 10.1016/j.acuro.2019.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 03/26/2019] [Accepted: 06/09/2019] [Indexed: 10/24/2022]
Abstract
BACKGROUND The effect of primary androgen deprivation therapy (ADT) in patients with localized prostate cancer (PCa) has not been well documented. The objective of the present study was to analyze the outcome of tumors treated with ADT as primary therapy in the Spanish Prostate Cancer Registry (19.4% of the series). PATIENTS AND METHODS Patients were classified in three groups: 1) with low/intermediate risk clinically localized tumors; 2) with high risk and locally advanced (T3-4) tumors; 3) with metastatic tumors. Time to castration resistance and overall cancer-specific survival were analyzed. In non-metastatic tumors, survivals in patients treated with ADT were compared with data from patients who underwent local treatments from the Spanish Prostate Cancer Registry. RESULTS 703 cases were analyzed. There were significant differences in the time to castration resistance, which was lower in the group of metastatic tumors. During follow-up, there were 179 deaths (25.5%) of which 89 (12.6%) were due to PCa. After 3 years of ADT, only 14.6% of patients in group 1 had died (1% due to PCa), 20.5% in group 2 and 46.8% in group 3 (9.2% and 31.3% due to PCa, respectively). Cancer-specific survival was significantly worse in group 1 using ADT than radical prostatectomy or radiotherapy. In high-risk and locally advanced tumors, ADT also had a lower cancer-specific survival than local treatments. CONCLUSION A longer time until the castration resistance was observed in patients with well- and intermediate-risk localized tumors treated with ADT. Patients with metastatic tumors showed the shortest time to castration resistance.
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Fernandez-Piñeiro I, Alvarez-Trabado J, Márquez J, Badiola I, Sanchez A. Xanthan gum-functionalised span nanoparticles for gene targeting to endothelial cells. Colloids Surf B Biointerfaces 2018; 170:411-420. [DOI: 10.1016/j.colsurfb.2018.06.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 05/11/2018] [Accepted: 06/20/2018] [Indexed: 12/16/2022]
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Majewska E, Szeliga M, Márquez J, Albrecht J. Liver-type glutaminase (GAB) suppresses malignant phenotype of glioblastoma cells. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx391.017] [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: 11/13/2022] Open
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Herranz JM, Copete E, Copete MA, Márquez J, Ferrandis P. Dormancy induction by summer temperatures and/or desiccation in imbibed seeds of trumpet daffodils Narcissus alcaracensis and N. longispathus (Amaryllidaceae). Plant Biol (Stuttg) 2017; 19:46-52. [PMID: 27094365 DOI: 10.1111/plb.12467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 04/18/2016] [Indexed: 06/05/2023]
Abstract
We analysed the effects of summer temperatures (28/14 °C) and/or desiccation (from 48% to 8% humidity) on imbibed Narcissus alcaracensis and N. longispathus seeds with an elongating embryo. In the N. alcaracensis seeds that overcame dormancy (embryo elongation = 27.14%), exposure to high temperatures induced secondary dormancy and reduced subsequent embryo growth. A further 3-month cold stratification (5 °C) was required to break secondary dormancy. Desiccation in early embryo growth stages (elongation = 11.42%) also reduced germination. Desiccation in the seeds in a more advanced growth stage (i.e. embryo elongation = 27.14%) induced secondary dormancy, which the further 3-month cold stratification did not overcome. When desiccation was preceded by high temperatures, seeds better overcame secondary dormancy (i.e. longer embryo elongation and seed germination). Treatments did not affect seed viability. In the N. longispathus seeds that overcame dormancy (embryo elongation = 59.21%), exposure to high temperatures induced secondary dormancy and they needed a further 1-month stratification at 15/4 °C + 2 months at 5 °C to reactivate the germination process. When embryo elongation was 42.10%, seed desiccation totally impeded subsequent germination. When embryo elongation reached 59.21%, desiccation induced secondary dormancy, which was not overcome by the above-described stratification treatment. When desiccation was preceded by high temperatures, seeds better overcame dormancy. Stress treatments killed 5-10% of seeds. This study suggests that the seeds of species with complex morphophysiological dormancy (MPD) levels are sensitive to desiccation in early embryo development stages, as opposed to the seeds of species with deep simple epicotyl MPD, which better tolerate water stress.
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Affiliation(s)
- J M Herranz
- Department of Crop Production and Agricultural Technology, Higher Technical School of Agronomy and Forestry Engineering, Botanical Institute of the University of Castilla-La Mancha, University of Castilla-La Mancha, Albacete, Spain
| | - E Copete
- Department of Crop Production and Agricultural Technology, Higher Technical School of Agronomy and Forestry Engineering, Botanical Institute of the University of Castilla-La Mancha, University of Castilla-La Mancha, Albacete, Spain
| | - M A Copete
- Department of Crop Production and Agricultural Technology, Higher Technical School of Agronomy and Forestry Engineering, Botanical Institute of the University of Castilla-La Mancha, University of Castilla-La Mancha, Albacete, Spain
| | - J Márquez
- Department of Crop Production and Agricultural Technology, Higher Technical School of Agronomy and Forestry Engineering, Botanical Institute of the University of Castilla-La Mancha, University of Castilla-La Mancha, Albacete, Spain
| | - P Ferrandis
- Department of Crop Production and Agricultural Technology, Higher Technical School of Agronomy and Forestry Engineering, Botanical Institute of the University of Castilla-La Mancha, University of Castilla-La Mancha, Albacete, Spain
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Castillo-Olivares AD, Rodríguez-Caso L, Márquez J, de Castro IN, Medina MÁ. Cytoplasmic pH modulates the activity of the plasma membrane electron transport system in Ehrlich ascites tumour cells. Redox Rep 2016; 2:285-7. [DOI: 10.1080/13510002.1996.11747063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Salinas-Vázquez M, Vicente W, Brito-de la Fuente E, Gallegos C, Márquez J, Ascanio G. Early Numerical Studies on the Peristaltic Flow through the Pharynx. J Texture Stud 2014. [DOI: 10.1111/jtxs.12060] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Salinas-Vázquez
- Instituto de Ingeniería; Universidad Nacional Autónoma de México; México 04510 México
| | - W. Vicente
- Instituto de Ingeniería; Universidad Nacional Autónoma de México; México 04510 México
| | | | - C. Gallegos
- Centre “Complex Formulations”; Fresenius-Kabi Deutschland GmbH; Bad Homburg Germany
| | - J. Márquez
- Centro de Ciencias Aplicadas y Desarrollo Tecnológico; Universidad Nacional Autónoma de México; México México
| | - G. Ascanio
- Centro de Ciencias Aplicadas y Desarrollo Tecnológico; Universidad Nacional Autónoma de México; México México
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Matés JM, Segura JA, Martín-Rufián M, Campos-Sandoval JA, Alonso FJ, Márquez J. Glutaminase isoenzymes as key regulators in metabolic and oxidative stress against cancer. Curr Mol Med 2013; 13:514-34. [PMID: 22934847 DOI: 10.2174/1566524011313040005] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2012] [Revised: 08/02/2012] [Accepted: 08/03/2012] [Indexed: 11/22/2022]
Abstract
Cancer cells require a robust supply of reduced nitrogen to produce nucleotides, non-essential amino acids and a high cellular redox activity. Glutamine provides a major substrate for respiration as well as nitrogen for the production of proteins, hexosamines, and macromolecules. Therefore, glutamine is one of key molecules in cancer metabolism during cell proliferation. The notion of targeting glutamine metabolism in cancer, originally rationalized by the number of pathways fed by this nutrient, has been reinforced by more recent studies demonstrating that its metabolism is regulated by oncogenes. Glutamine can exert its effects by modulating redox homeostasis, bioenergetics, nitrogen balance or other functions, including by being a precursor of glutathione, the major nonenzymatic cellular antioxidant. Glutaminase (GA) is the first enzyme that converts glutamine to glutamate, which is in turn converted to alpha-ketoglutarate for further metabolism in the tricarboxylic acid cycle. Different GA isoforms in mammals are encoded by two genes, Gls and Gls2. As each enzymatic form of GA has distinct kinetic and molecular characteristics, it has been speculated that the differential regulation of GA isoforms may reflect distinct functions or requirements in different tissues or cell states. GA encoded by Gls gene (GLS) has been demonstrated to be regulated by oncogenes and to support tumor cell growth. GA encoded by Gls2 gene (GLS2) reduces cellular sensitivity to reactive oxygen species associated apoptosis possibly through glutathione-dependent antioxidant defense, and therefore to behave more like a tumor suppressor. Thus, modulation of GA function may be a new therapeutic target for cancer treatment.
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Affiliation(s)
- J M Matés
- Department of Biología Molecular y Bioquímica, Facultad de Ciencias, Campus de Teatinos, Universidad de Málaga, Málaga, Spain.
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Marenco ML, Márquez J, Ontanilla A, García-Díaz L, Rivero M, Losada A, Torrejón R, Sainz JA, Antiñolo G. [Intrauterine myelomeningocele repair: experience of the fetal medicine and therapy program of the Virgen de Rocío University Hospital]. ACTA ACUST UNITED AC 2012; 60:47-53. [PMID: 23121708 DOI: 10.1016/j.redar.2012.07.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 07/27/2012] [Indexed: 11/17/2022]
Abstract
The most frequent form of spina bifida is myelomeningocele. There is no optimal postnatal treatment for this defect. In addition to the motor or sensory deficits, which depend on the location of the lesion, the defect is usually associated with Chiari ii malformation in affected children. Myelomeningocele has high mortality and, in up to 80% to 90% of patients, can be accompanied by hydrocephalus, which causes severe neurocognitive impairment and requires the patient to be shunted for survival. Intrauterine repair of fetal malformations employing open access through hysterotomy has become a therapeutic option due to improved anesthetic and surgical techniques and instrumentation, which have allowed this type of intervention to become relatively frequent. Anesthetic treatment should focus on both the mother and fetus and the hemodynamic factors regulating placental flow, uterine dynamics, blood loss and fetal well-being must remain well-controlled. Within our Program for Fetal Medicine and Therapy, 21 open fetal interventions have been performed: 17 EXIT procedures and 4 procedures for the intrauterine correction of fetal myelomeningocele. We describe our experience of the intrauterine repair of fetal myelomeningocele through open fetal surgery.
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Affiliation(s)
- M L Marenco
- Hospital Universitario Virgen del Rocío, Sevilla, España
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Quintero-Gallego E, Gómez C, Morales M, Márquez J. Spatial orientation deficit in children due to cerebellum astrocytoma pediatric tumor obtained by means of the Attentional Network Test. Neurosci Lett 2011; 504:232-6. [DOI: 10.1016/j.neulet.2011.09.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 08/31/2011] [Accepted: 09/15/2011] [Indexed: 10/17/2022]
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Matés JM, Segura JA, Alonso FJ, Márquez J. Anticancer antioxidant regulatory functions of phytochemicals. Curr Med Chem 2011; 18:2315-38. [PMID: 21517750 DOI: 10.2174/092986711795656036] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2011] [Accepted: 04/21/2011] [Indexed: 11/22/2022]
Abstract
Plant foods are not only a main source of nutrients, but they are also rich in physiologically bioactive bionutrients or phytochemicals. Consumption of fruit and vegetables is associated with a decreased risk of pathological status, including cancer. Reactive oxygen species play a key role in the genesis and development of cancer. Therefore, antioxidant functions of phytonutrients have been thoroughly investigated in the last years in relation to their crucial effect in the pathophysiology associated with neoplasia. This review discusses current knowledge on phytochemicals in relation to their potential as chemopreventive and/or chemotherapeutic molecule against human cancers. Finally, we will outline the use of bioactive phytochemicals on synergistic actions involved in the prevention and treatment of cancer as well as its future prospects.
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Affiliation(s)
- J M Matés
- Department of Biología Molecular y Bioquímica, Campus de Teatinos, Universidad de Málaga, 29071 Málaga, Spain.
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Matés JM, Segura JA, Alonso FJ, Márquez J. Natural antioxidants: therapeutic prospects for cancer and neurological diseases. Mini Rev Med Chem 2009; 9:1202-14. [PMID: 19534692 DOI: 10.2174/138955709789055180] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2008] [Accepted: 05/15/2009] [Indexed: 11/22/2022]
Abstract
An all out war is continuously occurring between oxidants and antioxidants inside the cells. This mini-review will provide an updated revision of the function of some natural compounds having main roles in antioxidant function. We will point on some phytochemicals working at two outstanding targets, tumour cells and neurons.
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Affiliation(s)
- J M Matés
- Department of Biología Molecular y Bioquímica, Facultad de Ciencias, Campus de Teatinos, Universidad de Málaga, 29071 Málaga, Spain.
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Chaparro P, Daza G, Caballero M, Márquez J, Jiménez G, Gómez E. P27.15 Usefulness of the visual evoked potentials and the corticography in the IOM of epileptic cerebral tumours. Clin Neurophysiol 2006. [DOI: 10.1016/j.clinph.2006.06.469] [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: 10/24/2022]
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Trujillo-Zamudio FE, Márquez J, Villaseñor Y, Brandan ME. Textural assessment in digital mammograms. Conf Proc IEEE Eng Med Biol Soc 2006; 2006:3456-3459. [PMID: 17947030 DOI: 10.1109/iembs.2006.259629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
This work focuses on testing textural and morphological parameters to assess characteristic features of digital mammograms. The selected images were radiological studies from the Institute Nacional de Cancerologia in Mexico City, evaluated as BI-RADS 4 or 5, meaning "probably malign" or "malign" findings, respectively. All patients were subjected to a biopsy procedure after the image was taken. The study group consisted of patients diagnosed with cancer, while the control group included those without cancer. We propose to analyze textural roughness by the mean height-width ratio of extrema (MHWRE) and morphological features by circularity. Results show good differentiation (correct diagnosis) for 46% of the images, bad differentiation (wrong diagnosis) for 25%, and undetermined diagnosis for 29% of the cases.
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Ibarra V, Portillo A, Santibáñez S, Blanco JR, Pérez-Martínez L, Márquez J, Oteo JA. DEBONEL/TIBOLA: Is Rickettsia slovaca the Only Etiological Agent? Ann N Y Acad Sci 2005; 1063:346-8. [PMID: 16481539 DOI: 10.1196/annals.1355.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- V Ibarra
- Area de Enfermedades Infecciosas, Hospitales San Millán-San Pedro-de La Rioja, Avda. Viana, No. 1, 26001, Logroño (La Rioja), Spain
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19
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20
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Abstract
The shortage of suitable organ donors is an important limiting factor that is making the evaluation of marginal donors necessary and, consequently, allowing expansion of standard donor criteria for organ removal. Lung procurement after methanol poisoning is anecdotal; in fact, there is only one published case in literature and that case showed a successful outcome. In this report, we describe a case of lung donation from a previously healthy individual who died from methanol poisoning. Both lungs were successfully implanted to a 20-year-old man who suffered from cystic fibrosis. This case report is new evidence that lung transplantation from methanol-poisoned donors may be safely performed with a good outcome.
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Affiliation(s)
- J A Silva
- Intensive Care Unit, Hospital Universitario Puerta de Hierro, Madrid, Spain.
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21
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Márquez K, Ortiz R, Schultze J, Márquez O, Márquez J, Staikov G. In situ FTIR monitoring of Ag and Au electrodeposition on glassy carbon and silicon. Electrochim Acta 2003. [DOI: 10.1016/s0013-4686(02)00740-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Abstract
This paper reports results for a new measure of texture coarseness, as a step towards automation of metaphase finding in cell-proliferation studies. This measure is highly specific to grey-level inter-chromosome coarseness features in microscopic images of metaphase spreads and allows the texture quantification of cytological objects, analysing the intensity profile between chromosome-extrema samples. Chromosome fragments produce patterns of pixels at low resolution, and the local neighbourhood of their individual extrema presents a characteristic coarseness along intensity profiles, on randomly oriented test lines. Results of the use of this new measure on microscope images of fields of metaphases and artifacts are compared with some representative texture measures and the performance of reported metaphase finders. This new measure outperforms the latter, when applied in metaphase detection and elimination of artifacts. This coarseness feature provides a specific metaphase signature that can be used in conjunction with other morphological and textural parameters for automated metaphase discrimination.
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Affiliation(s)
- L Vega-Alvarado
- Instituto de Biotecnología-UNAM, Cuernavaca, Morelos, Mexico.
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Chamorro C, Romera M, Borrallo J, Pardo C, Silva J, Márquez J. Experiencia inicial con el empleo de rocuronio para el bloqueo neuromuscular intravenoso continuo de pacientes críticos. Med Intensiva 2002. [DOI: 10.1016/s0210-5691(02)79789-1] [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: 11/29/2022]
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26
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Aledo JC, Rosado A, Olalla L, Campos JA, Márquez J. Overexpression, purification, and characterization of glutaminase-interacting protein, a PDZ-domain protein from human brain. Protein Expr Purif 2001; 23:411-8. [PMID: 11722177 DOI: 10.1006/prep.2001.1522] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A human brain cDNA clone coding for a novel PDZ-domain protein of 124 amino acids has been previously isolated in our laboratory. The protein was termed GIP (glutaminase-interacting protein) because it interacts with the C-terminal region of the human brain glutaminase L. Here we report the heterologous expression of GIP as a histidine-tagged fusion protein in Escherichia coli cells. The induction conditions (temperature and isopropyl beta-d-thiogalactopyranoside concentrations) were optimized in such a way that GIP accounted for about 20% of the total E. coli protein. A simple and rapid procedure for purification was developed, which yielded 17 mg of purified GIP per liter of bacterial cell culture. The apparent molecular mass of the protein by SDS-PAGE was 16 kDa, whereas in native form it was determined to be 28 kDa, which suggests dimer formation. The nature and integrity of the recombinant protein were verified by mass spectrometry analysis. The functionality of the GIP protein was tested with an in vitro activity assay: after being pulled down with glutathione S-transferase-glutaminase, GIP was revealed by Western blot using anti-GIP antibodies. Furthermore, the glutaminase activity in crude rat liver extracts was inhibited by the presence of recombinant purified GIP protein.
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Affiliation(s)
- J C Aledo
- Departamento de Biología Molecular y Bioquímica, Universidad de Málaga, Málaga, 29071, Spain
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27
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Geelhaar L, Márquez J, Kratzer P, Jacobi K. GaAs(2 5 11): a new stable surface within the stereographic triangle. Phys Rev Lett 2001; 86:3815-3818. [PMID: 11329331 DOI: 10.1103/physrevlett.86.3815] [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] [Subscribe] [Scholar Register] [Received: 10/05/2000] [Indexed: 05/23/2023]
Abstract
The atomic structure of GaAs(2 5 11), a hitherto unknown stable surface, has been determined by in situ scanning tunneling microscopy and first-principles electronic structure calculations. This orientation is located within the stereographic triangle, i.e., far away from all low-index surfaces. A low-energy ( 1x1) reconstruction containing arsenic dimers forms on the surface. The analysis of the surface structure shows that, for semiconductor surfaces, the gain in stability due to minimization of the number of dangling bonds is more important than the gain from rendering a semiconducting ground state.
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Affiliation(s)
- L Geelhaar
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
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Flores JM, Jiménez PI, Rincón D, Márquez J, Navarro H, Muñoz A, Murillo F. [C reactive protein as marker of infection among patients with severe closed trauma]. Enferm Infecc Microbiol Clin 2001; 19:61-5. [PMID: 11333570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
BACKGROUND Injury and infection are characterized by the activation of the acute phase proteins response. C-reactive protein (CRP), an acute phase protein, has been mentioned as an useful indicator of infection and sepsis in critically ill patients. OBJECTIVE To study the evolution of serum CRP in patients with severe blunt trauma and to ascertain its ability as a biological marker of infection during the first seven days after injury. METHODS We prospectively studied 54 patients with blunt trauma (injury severity score>=16) age>14 years and length of the Intensive Care Unit (ICU) estay>= 7 days, over a 4-month period. Culture-proven infections were collected and serum CRP was determinated every day, during the first week after ICU admission. RESULTS Twenty-eight patients (51.8%) developed an infection during the first week, and the median day of diagnosis of infection was day 6. Pneumonia was the most common infection (50%) and Gram-negative bacilli (63.3%) were the most common microorganisms recovered. Serum CRP levels were significantly higher in the infected patients group after day 4, showing a median value higher than 170 mg/l. Based on the receiver operating characteristic (ROC) curve analysis, a cutoff value of 109.5 mg/l for CRP gives a sensitivity of 78.6% and a specifity of 73.1% in predicting the presence of infection. CONCLUSIONS The course of serum CRP levels is different in the group of patients with severe blunt trauma and infection, compared with the non-infected group during the first week after injury and it could be an useful supplementary marker for infection after postinjury day 4. A value of 110 mg/l or higher for CRP should suggest an underlying infectious complication.
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Affiliation(s)
- J M Flores
- Servicio de Cuidados Críticos y Urgencias, Hospital Universitario Virgen del Rocío, Sevilla
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29
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Segura JA, Ruiz-Bellido MA, Arenas M, Lobo C, Márquez J, Alonso FJ. Ehrlich ascites tumor cells expressing anti-sense glutaminase mRNA lose their capacity to evade the mouse immune system. Int J Cancer 2001; 91:379-84. [PMID: 11169963 DOI: 10.1002/1097-0215(200002)9999:9999<::aid-ijc1046>3.3.co;2-c] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Glutaminase (EC 3.5.1.2) is a key enzyme in rapidly proliferating cells. Using anti-sense technology, an Ehrlich ascites tumor cell line (0.28AS-2) with reduced glutaminase activity has been obtained. We investigated the in vivo growth characteristics of the 0.28AS-2 cells. When injected i.p. into normal Swiss albino mice, the 0.28AS-2 cells were unable to grow. On the contrary, when injected into nude mice, they developed into solid tumors. Mice inoculated with 0.28AS-2 cells kept immunologic memory and rejected a second inoculation with parental Ehrlich ascites tumor cells. Expression of both polymorphic epithelial mucin-1 (MUC-1) and the enzyme N-acetyl-alpha-D-galactosaminidase, proteins implicated in host immune system escape, were markedly diminished in 0.28AS-2 cells. Study of the immune system response in mice inoculated with 0.28AS-2 cells revealed an increase in splenic CD18 cells and the presence of a large number of activated F4/80+ macrophages in the ascites cavity. These features, not observed in mice inoculated with parental Ehrlich ascites tumor cells, indicate that a distinctive, strong immune response occurred in animals inoculated with 0.28AS-2 cells. Our results suggest that inhibition of glutaminase expression using anti-sense technology induces phenotypic changes in Ehrlich ascites tumor cells that allow the development of an effective anti-tumor immune response, which makes the cells unable to develop in vivo tumors.
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Affiliation(s)
- J A Segura
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.
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30
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Abstract
The enzyme glutaminase in brain is responsible for the synthesis of neurotransmitter glutamate. We used the two-hybrid genetic selection system in yeast to look for interactors of glutaminase in human brain. We have identified two proteins containing PDZ domains, alpha1-syntrophin and a glutaminase-interacting protein, named GIP, that showed association with human glutaminase L, as deduced from specificity test of the two-hybrid system. The complete GIP cDNA clone has 1315 nucleotides with a 372-base open reading frame encoding a 124-amino acids protein. Glutaminase associates with both PDZ proteins through its C-terminal end; mutagenesis of single amino acids revealed the sequence -ESXV as essential for the interaction. These data suggest the possibility that PDZ domain-containing proteins are involved in the regulation of glutaminase in brain.
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Affiliation(s)
- L Olalla
- Departamento de Biología Molecular y Bioquímica, Laboratorio de Química de Proteínas, Facultad de Ciencias, Universidad de Málaga, 29071, Málaga, Spain
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31
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Márquez J, Kratzer P, Geelhaar L, Jacobi K, Scheffler M. Atomic Structure of the Stoichiometric GaAs(114) Surface. Phys Rev Lett 2001; 86:115-118. [PMID: 11136107 DOI: 10.1103/physrevlett.86.115] [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] [Subscribe] [Scholar Register] [Received: 06/06/2000] [Indexed: 05/23/2023]
Abstract
The stoichiometric GaAs(114) surface has been prepared using molecular beam epitaxy followed by annealing in ultrahigh vacuum. Based on in situ scanning tunneling microscopy measurements and first-principles electronic-structure calculations, we determine the surface reconstruction which we call alpha2(2x1). Contrary to what is expected for a high-index surface, it is surprisingly elementary. The (2x1) unit cell contains two As dimers and two rebonded Ga atoms. The surface energy is calculated as 53 meV/Å(2), which falls well within the range of low-index GaAs surface energies.
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Affiliation(s)
- J Márquez
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
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32
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Aledo JC, Gómez-Fabre PM, Olalla L, Márquez J. Identification of two human glutaminase loci and tissue-specific expression of the two related genes. Mamm Genome 2000; 11:1107-10. [PMID: 11130979 DOI: 10.1007/s003350010190] [Citation(s) in RCA: 131] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Glutaminolysis is initiated by either of two isoforms, K- and L-types, of the enzyme phosphate-activated glutaminase. The chromosomal localization, genomic organization, and the tissue-specific expression of the genes have been investigated in the human by using isoform-specific cDNA probes. Results obtained from radiation hybrid mapping experiments assigned the K-glutaminase gene to human Chromosome (Chr) 2, and a second locus for L-glutaminase in Chr 12 was identified. Southern blot analysis with the L-cDNA probe showed hybridization to a single restriction fragment, while four to seven fragments were found to hybridize to the K-cDNA probe. The distribution of human glutaminase expression was also investigated: the L-cDNA probe detected a single band of 2.4 kb in liver, brain, and pancreas, whereas a single transcript of approximately 4.4 kb was detected in kidney, brain, heart, placenta, lung, and pancreas by using the K-cDNA probe. This work provides evidence that the human liver and kidney glutaminase isozymes are encoded by separate genes located on different chromosomes; furthermore, the expression pattern in human tissues revealed for both isoenzymes differs notably from the paradigm based upon the isoenzyme distribution in rats.
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Affiliation(s)
- J C Aledo
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Spain
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33
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Segura JA, Barbero LG, Márquez J. Ehrlich ascites tumour unbalances splenic cell populations and reduces responsiveness of T cells to Staphylococcus aureus enterotoxin B stimulation. Immunol Lett 2000; 74:111-5. [PMID: 10996385 DOI: 10.1016/s0165-2478(00)00208-x] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.9] [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: 11/20/2022]
Abstract
Tumours must avoid host immune response to survive and proliferate; to achieve this purpose, tumours interact with cells of the immune system by means of tumour secreted factors. The alterations of splenic cell populations in mice bearing the Ehrlich ascites tumour have been studied. A rapid and acute response was observed, characterized by a decrease in both CD4 and CD8 T cells, and a transient increase in the number of B cells, which peaked 2 days after tumour inoculation. An increase in macrophage population and in the homing antigen CD18 was also detected. In vitro incubations of splenic cells with the Staphylococcus aureus enterotoxin B (SEB) showed that tumour induces a state of reduced responsiveness to stimulation of T cells, mainly affecting CD8 T cells, and a diminished IFN-gamma expression.
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Affiliation(s)
- J A Segura
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, 29071, Málaga, Spain.
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34
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Márquez J, Pérez-Pérez M, Naves FJ, Vega JA. Effect of spinal cord and peripheral nerve injury on human cutaneous sensory corpuscles. An immunohistochemical study. J Peripher Nerv Syst 2000; 2:49-59. [PMID: 10975736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
This study was aimed at analyzing the changes in cutaneous sensory corpuscles from the territory of lesioned nerves and clinically denervated skin of patients with spinal cord injury using immunohistochemical methods. The morphological and biochemical characteristics of the Schwann-related cells of the mature sensory corpuscles (lamellar cells of Meissner corpuscles and inner-core of Pacinian corpuscles) depend upon the axon. To clarify whether this dependence requires structural and/or functional integrity of sensory axons we analyzed immunohistochemically some axonal, Schwann cell and perineurial cell antigens in cutaneous sensory corpuscles from i) the underlesional levels of patients with spinal cord injury affecting dorsal and lateral funiculi; ii) peripheral nerve entrapment, iii) sectioned and grafted nerves. Skin biopsy samples from the hand or feet were processed for peroxidase-antiperoxidase immunohistochemistry using monoclonal antibodies directed against neurofilament proteins (to label the axons), S-100 protein (to label Schwann-related cells), epithelial membrane antigen (to label the perineurial derivatives), vimentin (to label both Schwann cell and perineurial derivatives). Meissner and Pacinian corpuscles of subjects suffering from spinal cord lesions showed an immunohistochemical profile close to normality, although in many of them S-100 protein was unevenly distributed or absent. Sensory corpuscles of the cutaneous territory of entrapped nerves were in most cases similar to those of normally innervated skin. The most striking finding in these subjects was the hyperinnervation of blood vessels and sweat glands. Finally, nerve section and subsequent unsuccessful graft repair resulted in absence of immunostaining for all the assessed antigens in sensory corpuscles. The present results suggest that structural, but not functional, integrity of the axon is essential in maintaining some immunohistochemical characteristics of the human cutaneous sensory corpuscles. Morphological findings are correlated and discussed in relation to the clinical evaluation of the sensitivity.
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Affiliation(s)
- J Márquez
- Servicio de Cirugía Plástica y Reparadora, Hospital Central de Asturias, Oviedo, Spain
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35
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Lobo C, Ruiz-Bellido MA, Aledo JC, Márquez J, Núñez De Castro I, Alonso FJ. Inhibition of glutaminase expression by antisense mRNA decreases growth and tumourigenicity of tumour cells. Biochem J 2000; 348 Pt 2:257-61. [PMID: 10816417 PMCID: PMC1221061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Phosphate-activated glutaminase has a critical role in tumours and rapidly dividing cells and its activity is correlated with malignancy. Ehrlich ascites tumour cells transfected with the pcDNA3 vector containing an antisense segment (0.28 kb) of rat kidney glutaminase showed impairment in the growth rate and plating efficiency, as well as a shortage in the glutaminase protein and activity. The C-terminal segment used is well conserved in all glutaminase sequences known. The transfected cells, named 0.28AS-2, displayed remarkable changes in their morphology compared with the parental cell line. The 0.28AS-2 cells also lost their tumourigenic capacity in vivo. Control mice developed an ascitic tumour, with a lifespan of 16+/-1 days, when inoculated with 10(7) cells/mouse; on the contrary, animals inoculated with transfected cells up to 2.5 times the cell numbers of control mice did not develop tumours and behaved as healthy animals. The ability to revert the transformed phenotype of antisense-transfected cells confirms the relevance of glutaminase in the transformation process and could provide new ways for the study of gene therapy.
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Affiliation(s)
- C Lobo
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Campus de Teatinos, Universidad de Málaga, 29071 Málaga, Spain
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36
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Aledo JC, de Pedro E, Gómez-Fabre PM, Núñez de Castro IN, Márquez J. Changes in mRNAs for enzymes of glutamine metabolism in the tumor-bearing mouse. Anticancer Res 2000; 20:1463-6. [PMID: 10928057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Changes in the relative mRNA levels of phosphate-activated glutaminase (PAG) and glutamine synthetase (GS) in the liver and kidney of mice bearing a highly malignant strain of Ehrlich ascites tumor cells were determined at different days after tumor transplantation. Kidney glutaminase mRNA steadily increased, reaching maximum values at day 10 of tumor growth, while those of glutamine synthetase did not change, resulting in a sustained decrease of the GS/PAG ratio in the kidneys of tumor-bearing animals compared with controls. However, the GS/PAG ratio in the liver significantly increased, mainly due to a strong decrease in PAG, whereas GS mRNA levels remained almost unaffected. These results, combined with those previously reported on enzymatic activities and glutamine concentrations in the host-tumor system, suggest a long-term regulation of the host glutaminase enzymes in order to increase the circulating glutamine levels needed for tumor growth.
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Affiliation(s)
- J C Aledo
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Spain
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37
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Abstract
This work deals with the problem of radiometric inhomogeneities found on the physical color images of the anatomical cryosections from the Visible Human Project (VHP) male body. Our goal is to extract very thin structures, like the blood vessel tree from the lungs. Current segmentation methods applied to VHP color images are disturbed by discontinuous, inter-slice radiometric variations; we thus devised an adaptive correction that is propagated along a series of parallel slices, taking advantage of the structural coherence between consecutive slices. No blurring is introduced, and fine details and texture are respected. Results of 3D segmentation of fine blood vessels on the corrected volume are presented.
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Affiliation(s)
- J Márquez
- Department of TSI, CNRS-URA820, Ecole Nationale Supérieure de Télécommunications 46, rue Barrault, 75013, Paris, France.
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38
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Castillo P, Márquez J, Rubluo A, Hernández G, Lara M. Plant regeneration from callus and suspension cultures of Valeriana edulis ssp. procera via simultaneous organogenesis and somatic embryogenesis. Plant Sci 2000; 151:115-119. [PMID: 10808067 DOI: 10.1016/s0168-9452(99)00203-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Plants of the genus Valeriana produce irioid esters of biotechnological interest, known as valepotriates. The regeneration of Valeriana edulis ssp. procera via indirect organogenesis and somatic embryogenesis from leaf-derived callus and suspension cultures, is presented. For induction of callus, leaves were cultured on semisolid MS medium supplemented with 2,4-dichlorophenoxyacetic acid (2,4-D) and kinetin. Embryogenic and organogenic callus development was observed after 16 weeks. Calli were transferred to semisolid and liquid Murashige and Skoog (MS) medium supplemented with kinetin and 1-naphthaleneacetic acid (NAA). Appearance of shoot and somatic embryo occurred 4 weeks later. Shoots were rooted and somatic embryos were germinated and were transferred to the greenhouse. A better organogenic and embryogenic response was observed from suspension cultures. Histological observations of morphogenic callus revealed that both somatic embryos and shoots arose from the same type of callus.
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Affiliation(s)
- P Castillo
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Cuernavaca, Morelos, México
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39
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Gómez-Fabre PM, Aledo JC, Del Castillo-Olivares A, Alonso FJ, Núñez De Castro I, Campos JA, Márquez J. Molecular cloning, sequencing and expression studies of the human breast cancer cell glutaminase. Biochem J 2000; 345 Pt 2:365-75. [PMID: 10620514 PMCID: PMC1220766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Phosphate-activated glutaminase (GA) is overexpressed in certain types of tumour but its exact role in tumour cell growth and proliferation is unknown. Here we describe the isolation of a full-length cDNA clone of human breast cancer ZR75 cells, by a combination of lambdagt10 cDNA library screening and the rapid amplification of cDNA ends ('RACE') technique. The cDNA of human GA is 2408 nt with a 1806-base open reading frame encoding a 602-residue protein with a predicted molecular mass of 66309 Da. The deduced amino acid sequence contains a putative mitochondrial import presequence of 14 residues at the N-terminal end. Heterologous expression and purification in Escherichia coli yielded a product of the expected molecular size that was recognized by using antibodies against the recombinant human GA. Sequence analyses showed that human GA was highly similar to the rat liver enzyme. Northern gel analysis revealed that the gene is present in human liver, brain and pancreas, in which a major transcript of 2.4 kb was demonstrated, but not in kidney, heart, skeletal muscle, lung or placenta. These results strongly suggest that the first human GA cloned, the GA from ZR-75 breast cancer cells, and presumably those from human liver and brain, are liver-type isoenzymes, in sharp contrast with the present view that considers the kidney type as the isoform expressed in all tissues with GA activity, with the exception of postnatal liver.
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Affiliation(s)
- P M Gómez-Fabre
- Departamento de Biología Molecular y Bioquímica, Laboratorio de Química de Proteínas, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain
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40
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Abstract
The influence of tumor implantation on glyceraldehyde-3-phosphate dehydrogenase (GAPDH) mRNA levels and stability was determined in the spleen of tumor-bearing mice. While GAPDH mRNA levels were not altered in skeletal muscle, kidney and liver from tumor-bearing mice, tumor implantation led to a 5.6-fold increase in the levels of splenic GAPDH mRNA. An enhanced message stability was observed in splenocytes from tumor-bearing animals, suggesting the involvement of post-transcriptional mechanisms in the selective GAPDH mRNA accumulation after tumor implantation. The GAPDH activity/glycolytic flux ratio was 18.5 in the spleen of healthy mice. Therefore, the three-fold increase in the glycolytic flux observed after tumor implantation could hardly justify the necessity for the upregulation of GAPDH.
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Affiliation(s)
- J C Aledo
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Spain
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41
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Corkidi G, Vega L, Márquez J, Rojas E, Ostrosky-Wegman P. Roughness feature of metaphase chromosome spreads and nuclei for automated cell proliferation analysis. Med Biol Eng Comput 1999. [DOI: 10.1007/bf02513345] [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: 11/28/2022]
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42
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Otero R, Gutiérrez JM, Rojas G, Núñez V, Díaz A, Miranda E, Uribe AF, Silva JF, Ospina JG, Medina Y, Toro MF, García ME, León G, García M, Lizano S, De La Torre J, Márquez J, Mena Y, González N, Arenas LC, Puzón A, Blanco N, Sierra A, Espinal ME, Lozano R. A randomized blinded clinical trial of two antivenoms, prepared by caprylic acid or ammonium sulphate fractionation of IgG, in Bothrops and Porthidium snake bites in Colombia: correlation between safety and biochemical characteristics of antivenoms. Toxicon 1999; 37:895-908. [PMID: 10340829 DOI: 10.1016/s0041-0101(98)00220-7] [Citation(s) in RCA: 92] [Impact Index Per Article: 3.7] [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: 11/25/2022]
Abstract
A randomized blinded clinical trial was performed in 53 patients bitten by Bothrops sp. and Porthidium sp. in Antioquia and Chocó, Colombia, in order to compare the efficacy and safety of two antivenoms made of whole IgG obtained by either ammonium sulphate (monovalent anti-B. atrox) or caprylic acid (polyvalent) fractionation. Additionally, antivenoms were compared by electrophoretic and chromatographic analyses and anticomplementary activity in vitro. With a protocol of 2, 4 and 6 antivenom vials for the treatment of mild, moderate and severe envenomings, respectively, both antivenoms were equally efficient to neutralize the most relevant signs of envenoming and to clear serum venom levels in patients from the first hour and later on. Three patients with severe envenoming and initially treated with less than six vials on admission had persistent or recurrent venom antigenemia within 12-48 h. Monovalent antivenom fractionated by ammonium sulphate precipitation had higher amounts of protein aggregates and nonimmunoglobulin proteins than polyvalent antivenom fractionated by caprylic acid precipitation. Both antivenoms presented anticomplementary activity in vitro, being higher in the monovalent product. In agreement, monovalent antivenom induced a significantly higher incidence of early antivenom reactions (52%) than polyvalent antivenom (25%).
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Affiliation(s)
- R Otero
- Centro de Investigaciones Médicas, Departamento de Pediatría, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
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43
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44
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Repiso-Jiménez JB, Márquez J, Sotillo I, García-Bravo B, Camacho F. Subcutaneous fat necrosis of the newborn. J Eur Acad Dermatol Venereol 1999; 12:254-7. [PMID: 10461649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Subcutaneous fat necrosis of the newborn (SFN) is an uncommon disease that affects newborns who have suffered from tissue hypoxia during or following delivery. This disease appears during the first weeks of life. It consists of indurate, erythematous or purple-erythematous nodules and plaques in the skin. Histology of a biopsy specimen shows granulomatous necrosis in the subcutis with radial crystals in lipocytes and giant cells. Spontaneous resolution in a few weeks is usual, but the mobilization of calcium from the necrosed subcutis together with the action of some hormones may cause hypercalcemia and certain serious complications. A newborn female child developed SFN after dystocic delivery causing cerebral frontal lobe hemorrhage. The skin nodules resolved spontaneously in a few weeks and no complications were observed 1 year later.
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Affiliation(s)
- J B Repiso-Jiménez
- Department of Dermatology, Virgen Macarena University Hospital, Seville, Spain
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45
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Ortiz R, Cuesta A, Márquez O, Márquez J, Méndez J, Gutiérrez C. Origin of the infrared reflectance increase produced by the adsorption of CO on particulate metals deposited on moderately reflecting substrates. J Electroanal Chem (Lausanne) 1999. [DOI: 10.1016/s0022-0728(99)00099-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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46
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Campos JA, Aledo JC, del Castillo-Olivares A, del Valle AE, Núñez de Castro I, Márquez J. Involvement of essential cysteine and histidine residues in the activity of isolated glutaminase from tumour cells. Biochim Biophys Acta 1998; 1429:275-83. [PMID: 9920404 DOI: 10.1016/s0167-4838(98)00240-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The pH dependence of the phosphate-activated glutaminase isolated from Ehrlich tumour cells suggests a functional role for two prototropic groups with apparent pKa of 9.3 and 7.7 at the active site of the protein; these pKa values are compatible with cysteine and histidine residues, respectively. This possibility was investigated by chemical modification studies of the purified enzyme. N-Ethylmaleimide fully inactivated the purified glutaminase; the reaction order was very close to 1.0, suggesting that N-ethylmaleimide modifies glutaminase at a single essential site. Spectrophotometric studies of the isolated protein treated with diethyl pyrocarbonate indicate that two histidine residues are modified. Since glutaminase is loosely associated to the inner mitochondrial membrane, modification experiments were also carried out using mitochondrial membrane fractions. N-Ethylmaleimide and diethyl pyrocarbonate gave similar results in mitochondria membrane-bound enzyme to those obtained with purified enzyme. Glutamate, which behaves as a competitive inhibitor of the enzyme, partially protected the inactivation caused by N-ethylmaleimide in membrane-bound experiments. The results suggest the existence of a critical histidine residue(s) in the tumour glutaminase, and strongly support the notion that a cysteine residue, which is located at (or near) the active site, is involved in the catalytic mechanism as well.
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Affiliation(s)
- J A Campos
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias, Universidad de Málaga, Spain
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47
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Abstract
The influence of progressive tumor growth on phosphate-activated glutaminase (PAG) expression in splenocytes from mice bearing Ehrlich ascites carcinoma cells was investigated. Implantation of Ehrlich ascites tumor cells in the peritoneal cavity of mice led to a 2.3-fold stimulation of spleen PAG activity 48 h later. Four days after tumor implantation the glutaminase activity had returned to nearly basal value and remained at this level throughout the tumor development. Northern blot analysis indicated that two species of glutaminase mRNA were expressed in the spleen, which showed a differential expression pattern during the first 2 days after tumor implantation. The abundance of the transcript of higher electrophoretic mobility (approximately 3 kb) constantly increased over the first 2 days of tumor growth. The mRNA of lower electrophoretic mobility (approximately 6 kb) peaked at 12 h after tumor implantation and returned to control values at 48 h. These results demonstrate that tumor has the capability of altering glutaminase expression in the host spleen.
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Affiliation(s)
- J C Aledo
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias, Universidad de Málaga, Spain
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Corkidi G, Vega L, Márquez J, Rojas E, Ostrosky-Wegman P. Roughness feature of metaphase chromosome spreads and nuclei for automated cell proliferation analysis. Med Biol Eng Comput 1998; 36:679-85. [PMID: 10367457 DOI: 10.1007/bf02518869] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [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: 12/19/2022]
Abstract
As a step towards automation of mitotic index estimation for cell proliferation studies, a roughness feature of surface-intensity images is introduced: the mean depth-width ratio of extrema (MDWRE). This feature allows identification of variable-shaped metaphases and interphase nuclei in the presence of many artefacts (one metaphase per hundreds of nuclei and thousands of artefacts). The texture of the cytological objects (seen as rough surfaces) is quantified by scanning, in one dimension, the lines contained in a closed contour. MDWRE proves to be suitable for image magnifications by a factor of as low as ten, making faster scanning of slides possible. The use of this feature gives +14%, +65%, +133% and +133% better performance figures than classical textural features derived from co-occurrence matrices, such as contrast, energy, entropy and angular second moment, respectively, and +51% better than the relative extrema density (RED). The MDWRE per object and the shape of the histogram of the depth-width ratio of grey-level roughs have been shown to be very useful as textural features for the classification of metaphase images.
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Affiliation(s)
- G Corkidi
- Image Processing Laboratory, Centro de Instrumentos, UNAM, Distrito Federal, México.
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Sanmartín M, Fernández Lozano I, Márquez J, Antorrena I, Bautista A, Silva L, Ortigosa J, de Artaza M. [The absence of interference between GSM mobile telephones and implantable defibrillators: an in-vivo study. Groupe Systèmes Mobiles]. Rev Esp Cardiol 1997; 50:715-9. [PMID: 9417561 DOI: 10.1016/s0300-8932(97)73287-1] [Citation(s) in RCA: 6] [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: 02/05/2023]
Abstract
INTRODUCTION AND OBJECTIVES The electromagnetic field created by mobile telephones can cause pacemaker dysfunction. Although implantable cardioverter defibrillators are also susceptible to electromagnetic interference, few studies have addressed this issue and compatibility with the GSM mode has not been tested. This study was developed to detect possible "in vivo" interference between GSM mobile telephones and implantable cardioverter defibrillators. MATERIAL AND METHODS The study group is composed of 30 patients with 8 different models of defibrillators. Twenty six had endocardial leads and 4 epicardial. Three GSM mobile phones were used: Siemens S3 COM and Motorola 6200 in all cases and Ericsson GA 318 in one. The tests were performed under continuous electrocardiographic monitoring. All therapies were deactivated and sensitivities were set to maximal parameters. The telephones were positioned in close contact to the defibrillator can and precordium, in two different angles. Three situations were evaluated: calling, established contact for 15 seconds and ringing. The protocol was repeated during pacing to assess the possibility of pacemaker mode inhibition. RESULTS No cases of electromagnetic interference were observed. One patient presented non-sustained ventricular tachycardia episodes during the tests that were detected by the defibrillator. CONCLUSIONS These results suggest that electromagnetic interference by GSM mobile phones are not a probable cause of implantable defibrillators dysfunction.
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Affiliation(s)
- M Sanmartín
- Servicio de Cardiología, Clínica Puerta de Hierro, Madrid.
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Abstract
Tumors are characterized by their ability to avoid the host immune system. Ehrlich ascites tumor cells were used to investigate the early alterations of the host immune system after tumor inoculation. The results show that frequencies of splenic Th lymphocytes were drastically reduced during tumor growth, reaching a minimum only two days after tumor inoculation. The frequency of splenic CD4+ lymphocytes expressing IFN-gamma was significantly increased, although the total number was unchanged, suggesting that there was no net induction of Th1-type response. Splenic macrophages were increased, in both frequency and cell number, after four days of tumor growth. The same pattern was observed when mice were inoculated with cell free ascitic fluid. TGF-beta precursors were detected in tumor cells as well as in ascitic fluid. The data suggest that tumor actively interacts with host immune system by means of tumor cell secreted factors.
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Affiliation(s)
- J A Segura
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias, Universidad de Málaga, Spain
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