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116 results on '"Pinero G"'

1. Acoustic Echo Cancellation using Residual U-Nets

Author

Silva-Rodríguez, J., Dolz, M. F., Ferrer, M., Castelló, A., Naranjo, V., and Piñero, G.

Subjects
Electrical Engineering and Systems Science - Audio and Speech Processing, Computer Science - Machine Learning
Abstract

This paper presents an acoustic echo canceler based on a U-Net convolutional neural network for single-talk and double-talk scenarios. U-Net networks have previously been used in the audio processing area for source separation problems because of their ability to reproduce the finest details of audio signals, but to our knowledge, this is the first time they have been used for acoustic echo cancellation (AEC). The U-Net hyperparameters have been optimized to obtain the best AEC performance, but using a reduced number of parameters to meet a latency restriction of 40 ms. The training and testing of our model have been carried out within the framework of the 'ICASSP 2021 AEC Challenge' organized by Microsoft. We have trained the optimized U-Net model with a synthetic dataset only (S-U-Net) and with a synthetic dataset and the single-talk set of a real dataset (SR-U-Net), both datasets were released for the challenge. The S-U-Net model presented better results for double-talk scenarios, thus their inferred near-end signals from the blind testset were submitted to the challenge. Our canceler ranked 12th among 17 teams, and 5th among 10 academia teams, obtaining an overall mean opinion score of 3.57., Comment: 6 pages, 2 figures, submitted to the 2021 IEEE International Conference on Acoustics, Speech and Signal Processing on October 2020

Published
2021

2. General care in the management of severe traumatic brain injury: Latin American consensus

Author

Godoy, D.A., Videtta, W., Santa Cruz, R., Silva, X., Aguilera-Rodríguez, S., Carreño-Rodríguez, J.N., Ciccioli, F., Piñero, G., Ciro, J.D., da Re-Gutiérrez, S., Domeniconi, G., Fischer, D., Hernández, O., Lacerda-Gallardo, Á., Mejía, J., Panhke, P., Romero, C., Lora, F.S., Soler-Morejón, C., Sufan, J.L., Montes, J.M., Fuenzalida, L.C., Parahnos, J.L., and Jibaja, M.

Published
2020
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8. Outcomes and Treatment Strategies for Autoimmunity and Hyperinflammation in Patients with RAG Deficiency

Author

Farmer, J.R. Foldvari, Z. Ujhazi, B. De Ravin, S.S. Chen, K. Bleesing, J.J.H. Schuetz, C. Al-Herz, W. Abraham, R.S. Joshi, A.Y. Costa-Carvalho, B.T. Buchbinder, D. Booth, C. Reiff, A. Ferguson, P.J. Aghamohammadi, A. Abolhassani, H. Puck, J.M. Adeli, M. Cancrini, C. Palma, P. Bertaina, A. Locatelli, F. Di Matteo, G. Geha, R.S. Kanariou, M.G. Lycopoulou, L. Tzanoudaki, M. Sleasman, J.W. Parikh, S. Pinero, G. Fischer, B.M. Dbaibo, G. Unal, E. Patiroglu, T. Karakukcu, M. Al-Saad, K.K. Dilley, M.A. Pai, S.-Y. Dutmer, C.M. Gelfand, E.W. Geier, C.B. Eibl, M.M. Wolf, H.M. Henderson, L.A. Hazen, M.M. Bonfim, C. Wolska-Kuśnierz, B. Butte, M.J. Hernandez, J.D. Nicholas, S.K. Stepensky, P. Chandrakasan, S. Miano, M. Westermann-Clark, E. Goda, V. Kriván, G. Holland, S.M. Fadugba, O. Henrickson, S.E. Ozen, A. Karakoc-Aydiner, E. Baris, S. Kiykim, A. Bredius, R. Hoeger, B. Boztug, K. Pashchenko, O. Neven, B. Moshous, D. de Villartay, J.-P. Bousfiha, A.A. Hill, H.R. Notarangelo, L.D. Walter, J.E.

Subjects
hemic and lymphatic diseases
Abstract

Background: Although autoimmunity and hyperinflammation secondary to recombination activating gene (RAG) deficiency have been associated with delayed diagnosis and even death, our current understanding is limited primarily to small case series. Objective: Understand the frequency, severity, and treatment responsiveness of autoimmunity and hyperinflammation in RAG deficiency. Methods: In reviewing the literature and our own database, we identified 85 patients with RAG deficiency, reported between 2001 and 2016, and compiled the largest case series to date of 63 patients with prominent autoimmune and/or hyperinflammatory pathology. Results: Diagnosis of RAG deficiency was delayed a median of 5 years from the first clinical signs of immune dysregulation. Most patients (55.6%) presented with more than 1 autoimmune or hyperinflammatory complication, with the most common etiologies being cytopenias (84.1%), granulomas (23.8%), and inflammatory skin disorders (19.0%). Infections, including live viral vaccinations, closely preceded the onset of autoimmunity in 28.6% of cases. Autoimmune cytopenias had early onset (median, 1.9, 2.1, and 2.6 years for autoimmune hemolytic anemia, immune thrombocytopenia, and autoimmune neutropenia, respectively) and were refractory to intravenous immunoglobulin, steroids, and rituximab in most cases (64.7%, 73.7%, and 71.4% for autoimmune hemolytic anemia, immune thrombocytopenia, and autoimmune neutropenia, respectively). Evans syndrome specifically was associated with lack of response to first-line therapy. Treatment-refractory autoimmunity/hyperinflammation prompted hematopoietic stem cell transplantation in 20 patients. Conclusions: Autoimmunity/hyperinflammation can be a presenting sign of RAG deficiency and should prompt further evaluation. Multilineage cytopenias are often refractory to immunosuppressive treatment and may require hematopoietic cell transplantation for definitive management. © 2019 The Authors

Published
2019

11. Outcomes and Treatment Strategies for Autoimmunity and Hyperinflammation in Patients with RAG Deficiency

Author

Farmer, J. R., Foldvari, Z., Ujhazi, B., De Ravin, S. S., Chen, K., Bleesing, J. J. H., Schuetz, C., Al-Herz, W., Abraham, R. S., Joshi, A. Y., Costa-Carvalho, B. T., Buchbinder, D., Booth, C., Reiff, A., Ferguson, P. J., Aghamohammadi, A., Abolhassani, H., Puck, J. M., Adeli, M., Cancrini, C., Palma, P., Bertaina, A., Locatelli, Franco, Di Matteo, G., Geha, R. S., Kanariou, M. G., Lycopoulou, L., Tzanoudaki, M., Sleasman, J. W., Parikh, S., Pinero, G., Fischer, B. M., Dbaibo, G., Unal, E., Patiroglu, T., Karakukcu, M., Al-Saad, K. K., Dilley, M. A., Pai, S. -Y., Dutmer, C. M., Gelfand, E. W., Geier, C. B., Eibl, M. M., Wolf, H. M., Henderson, L. A., Hazen, M. M., Bonfim, C., Wolska-Kusnierz, B., Butte, M. J., Hernandez, J. D., Nicholas, S. K., Stepensky, P., Chandrakasan, S., Miano, M., Westermann-Clark, E., Goda, V., Krivan, G., Holland, S. M., Fadugba, O., Henrickson, S. E., Ozen, A., Karakoc-Aydiner, E., Baris, S., Kiykim, A., Bredius, R., Hoeger, B., Boztug, K., Pashchenko, O., Neven, B., Moshous, D., de Villartay, J. -P., Bousfiha, A. A., Hill, H. R., Notarangelo, L. D., Walter, J. E., Locatelli F. (ORCID:0000-0002-7976-3654), Farmer, J. R., Foldvari, Z., Ujhazi, B., De Ravin, S. S., Chen, K., Bleesing, J. J. H., Schuetz, C., Al-Herz, W., Abraham, R. S., Joshi, A. Y., Costa-Carvalho, B. T., Buchbinder, D., Booth, C., Reiff, A., Ferguson, P. J., Aghamohammadi, A., Abolhassani, H., Puck, J. M., Adeli, M., Cancrini, C., Palma, P., Bertaina, A., Locatelli, Franco, Di Matteo, G., Geha, R. S., Kanariou, M. G., Lycopoulou, L., Tzanoudaki, M., Sleasman, J. W., Parikh, S., Pinero, G., Fischer, B. M., Dbaibo, G., Unal, E., Patiroglu, T., Karakukcu, M., Al-Saad, K. K., Dilley, M. A., Pai, S. -Y., Dutmer, C. M., Gelfand, E. W., Geier, C. B., Eibl, M. M., Wolf, H. M., Henderson, L. A., Hazen, M. M., Bonfim, C., Wolska-Kusnierz, B., Butte, M. J., Hernandez, J. D., Nicholas, S. K., Stepensky, P., Chandrakasan, S., Miano, M., Westermann-Clark, E., Goda, V., Krivan, G., Holland, S. M., Fadugba, O., Henrickson, S. E., Ozen, A., Karakoc-Aydiner, E., Baris, S., Kiykim, A., Bredius, R., Hoeger, B., Boztug, K., Pashchenko, O., Neven, B., Moshous, D., de Villartay, J. -P., Bousfiha, A. A., Hill, H. R., Notarangelo, L. D., Walter, J. E., and Locatelli F. (ORCID:0000-0002-7976-3654)

Abstract

Background: Although autoimmunity and hyperinflammation secondary to recombination activating gene (RAG) deficiency have been associated with delayed diagnosis and even death, our current understanding is limited primarily to small case series. Objective: Understand the frequency, severity, and treatment responsiveness of autoimmunity and hyperinflammation in RAG deficiency. Methods: In reviewing the literature and our own database, we identified 85 patients with RAG deficiency, reported between 2001 and 2016, and compiled the largest case series to date of 63 patients with prominent autoimmune and/or hyperinflammatory pathology. Results: Diagnosis of RAG deficiency was delayed a median of 5 years from the first clinical signs of immune dysregulation. Most patients (55.6%) presented with more than 1 autoimmune or hyperinflammatory complication, with the most common etiologies being cytopenias (84.1%), granulomas (23.8%), and inflammatory skin disorders (19.0%). Infections, including live viral vaccinations, closely preceded the onset of autoimmunity in 28.6% of cases. Autoimmune cytopenias had early onset (median, 1.9, 2.1, and 2.6 years for autoimmune hemolytic anemia, immune thrombocytopenia, and autoimmune neutropenia, respectively) and were refractory to intravenous immunoglobulin, steroids, and rituximab in most cases (64.7%, 73.7%, and 71.4% for autoimmune hemolytic anemia, immune thrombocytopenia, and autoimmune neutropenia, respectively). Evans syndrome specifically was associated with lack of response to first-line therapy. Treatment-refractory autoimmunity/hyperinflammation prompted hematopoietic stem cell transplantation in 20 patients. Conclusions: Autoimmunity/hyperinflammation can be a presenting sign of RAG deficiency and should prompt further evaluation. Multilineage cytopenias are often refractory to immunosuppressive treatment and may require hematopoietic cell transplantation for definitive management.

Published
2019

12. Creatinine clearance and adverse hospital outcomes in patients with acute coronary syndromes: findings from the global registry of acute coronary events (GRACE)

Author

Santopinto, JJ, Fox, KAA, Goldberg, RJ, Budaj, A, Pinero, G, Avezum, A, Gulba, D, Esteban, J, Gore, JM, Johnson, J, and Gurfinkel, EP

Subjects
Coronary heart disease -- Care and treatment -- Prognosis, Outcome and process assessment (Health Care) -- Analysis -- Measurement -- Physiological aspects, Statistics -- Analysis -- Physiological aspects -- Measurement, Creatinine -- Physiological aspects -- Measurement -- Analysis, Health
Abstract

Objective: To determine whether creatinine clearance at the time of hospital admission is an independent predictor of hospital mortality and adverse outcomes in patients with acute coronary syndromes (ACS). Design: [...]

Published
2003

16. Predicting outcome after traumatic brain injury: Practical prognostic models based on large cohort of international patients

Author

Perel, P. A., Olldashi, F., Muzha, I., Filipi, N., Lede, R., Copertari, P., Traverso, C., Copertari, A., Vergara, E. A., Montenegro, C., De Huidobro, R. R., Saladino, P., Surt, K., Cialzeta, J., Lazzeri, S., Pinero, G., Ciccioli, F., Videtta, W., Barboza, M. F., Svampa, S., Sciuto, V., Domeniconi, G., Bustamante, M., Waschbusch, M., Gullo, M. P., Drago, D. A., Linares, J. C. A., Camputaro, L., Troccoli, G., Galimberti, H., Tallott, M., Eybner, C., Buchinger, W., Fitzal, S., Mazairac, G., Oleffe, V., Grollinger, T., Delvaux, P., Carlier, L., Braet, V., Jacques, J. -M., De Knoop, D., Nasi, L., Choi, H. K., Schmitt, M., Gentil, A., Nacul, F., Barrios, P. B., Xinkang, C., Hua, L. S., Tian, H. H., Xiaodong, C., Gualteros, W., Otero, A. A., Arango, M., Ciro, J., Jaramillo, H., Gonzalez, I., Gomez, C., Arias, A., Fonseca, M., Mora, C., Cabrera, E. G. L., Betancurth, J. L., Munoz, P., Quinonez, J. A., Castillo, M. E. G., Lopez, O., Yepes, R. P., Cuellar, D. L., Paez, G., Chaves, H. D., Ordonez, P. E., Plata, Riccardo, Pineda, M., Pulido, L. E., Jaramillo, J. S. V., Rebolledo, C., Palma, O., Soler, C., Pastrana, I., Falero, R., Perera, M. D., Garcia, A. A., Oliva, R., Delgado, H. L., Carnero, A. M., Lopez, B. L., Gallardo, A. L., Morales, A. O., Lezcano, H., Ferrer, M. I., Bess, I. Z., Canino, G. R., Ruiz, E. M. P., Cruz, O. G., Svoboda, P., Kantorova, I., Ochmann, J., Scheer, P., Kozumplik, L., Marsova, J., Edelmann, K., Chytra, I., Bosman, R., Andrejsova, H., Pachl, J., Burger, J., Kramar, F., Ulloa, M. I., Gonzalez, L., Daccach, A., Ortega, A., Cevallos, S., Cueva, B. Z., Ochoa, M., Tapia, J. V., Hurtado, J., Wong, M. C. S., Santos, R., Khamis, H., Abaza, A. H., Fekry, A., El Kordy, S., Shawky, T., El-Sayed, H., Khalil, N., Negm, N., Fisal, S., Alamin, M., Shokry, H., Elhusseny, A. Y., Radwan, A., Rashid, M., Gogichaisvili, T., Ingorokva, G., Gongadze, N., Otarashvili, A., Kleist, W., Kalkum, M., Ulrich, P., Andrews, N., Nakos, G., Karavelis, A., Archontakis, G., Myrianthefs, P., Yadav, Y., Yadav, S., Khatri, R., Baghel, A., Husain, M., Jha, D., Chhang, W. H., Dhandhania, M., Fonning, C., Iyengar, S. N., Gupta, S., Ravi, R. R., Bopiah, K. S., Herur, A., Venkataramana, N. K., Satish, A., Bhavadasan, K., Morris, R., Ramesh, S., Dewan, Y., Singh, Y., Bhagchandani, R., Bhagchandani, S., Sethurayar, V. U., Ipe, S., Sreekumar, G., Panigrahi, M., Reddy, A., Khosla, V., Pillay, H., Thomas, N., Sridhar, K., Jose, B., Kurian, N., Praharaj, S., Pillai, S., Ramana, Kiyawat, D., Maheshwari, K., Panikar, D., Chawla, J., Shenoy, S., Raja, A., Rupayana, Y., Reddy, S., Mohan, N., Kelkar, S., Johri, M., Golden, N., Maliawan, S., Fauzi, A., Farouk, U., Fakharian, E., Aramesh, A., Eghtedari, M., Ahmadzadeh, F., Gholami, A., Plunkett, P., Redican, C., Mcmahon, G., Annetta, Maria Giuseppina, Mouchaty, H., Bruzzone, E., Harding, B., Qureshi, M., Idris, Z., Jafri Abdullah, N. C., Ghazali, G., Ghani, A. R. I., Cheah, F., Cabrera, A., Gonzalez, J. L. M., Loria-Castellanos, J., Jackson, S., Hutchinson, R., Komolafe, E., Adeolu, A., Komolafe, M., Adeyemi-Doro, O., Bankole, F., Shehu, B., Danlami, V., Odebode, O., Oluwadiya, K., Sanni, A., Giebel, H., Kumar, S., Jooma, R., Mezquita, J. E., Ovelar, C. O., Portillo, M. G., Rodriguez, D., Balica, L., Oprita, B., Sklerniacof, M., Steflea, L., Bandut, L., Danil, A., Iliescu, R., Ciurea, J., El-Dawlatly, A., Alwatidy, S., Al-Yafi, W., El-Dawlatly, M., Krunic-Protic, R., Janosevic, V., Tan, J., Seah, C., Trenkler, S., Humenansky, M., Stajancova, T., Schwendt, I., Laincz, A., Julius, Z., Maros, S., Firment, J., Cifranicova, M., Saniova, B., Kalig, K., Medekova, S., Wiszt, R., Macuga, I., Hartzenberg, B., Du Plessis, G., Houlie, Z., Nathoo, N., Khumalo, S., Tracey, R., Munoz-Sanchez, A., Francisco Murillo-Cabezas, N. C., Flores-Cordero, J., Rincon- Ferrari, D., Rubi, M., Caler, L., Del Campo, M. M., Laguna, L. B., Nava, J. M., Minguillon, M. A., Lopez, A. M., Ramos-Gomez, L., De La Torre-Prados, V., Pellejero, R., Laloe, V., Mandrella, B., Suganthan, Perera, S., Mahendran, K., Stocker, R., Ludwig, S., Zimmermann, H., Denzler, U., Yutthakasemsunt, S., Kittiwattanagul, W., Piyavechvirat, P., Tapsai, P., Namuang-Jan, A., Chantapimpa, U., Watanachai, C., Subsompon, P., Pussanakawatin, W., Khunjan, P., Tangchitvittaya, S., Nilapong, S., Klangsang, T., Taechakosol, W., Srinat, A., Jerbi, Z., Borsali- Falfoul, N., Rezgui, M., Cakar, N., Ssenyonjo, H., Kobusingye, O., Lomas, G., Yates, D., Lecky, F., Bleetman, A., Baldwin, A., Jenkinson, E., Pantrini, S., Stewart, J., Contractor, N., Roberts, T., Butler, J., Pinto, A., Lee, D., Brayley, N., Robbshaw, K., Dix, C., Graham, S., Pye, S., Green, M., Kellins, A., Moulton, C., Fogg, B., Cottingham, R., Funnell, S., Shanker, U., Summers, C., Malek, L., Ashcroft, C., Powell, J., Moore, S., Buckley, S., Grocutt, M., Chambers, S., Morrice, A., Marshall, H., Harris, J., Matthews, W., Tippet, J., Mardell, S., Macmillan, F., Shaw, A., Luthra, P., Dixon, G., Ahmed, M., Young, M., Mason, S., Loveday, I., Clark, C., Taylor, S., Wilson, P., Ali, K., Greenwood, S., White, M., Perez, R., Eljamel, S., Wasserberg, J., Shale, H., Read, C., Mccarron, J., Pennell, A., Ray, G., Thurston, J., Brown, E., Jaffey, L., Graves, M., Bailey, R., Loveridge, N., Evans, G., Hughes, S., Ahmed, M. K., Richardson, J., Gallagher, C., Odedun, T., Lees, K., Foley, D., Payne, N., Pennycook, A., Griffiths, C., Moore, D., Byrne, D., Dasan, S., Banerjee, Abhishek, Mcguinness, S., Chikhani, C., Zoltie, N., Barlow, I., Stell, I., Hulse, W., Crossley, J., Watkins, L., Dorani, B., Van Viet, T., Plata R., Annetta M. G. (ORCID:0000-0001-7574-1311), Banerjee A., Perel, P. A., Olldashi, F., Muzha, I., Filipi, N., Lede, R., Copertari, P., Traverso, C., Copertari, A., Vergara, E. A., Montenegro, C., De Huidobro, R. R., Saladino, P., Surt, K., Cialzeta, J., Lazzeri, S., Pinero, G., Ciccioli, F., Videtta, W., Barboza, M. F., Svampa, S., Sciuto, V., Domeniconi, G., Bustamante, M., Waschbusch, M., Gullo, M. P., Drago, D. A., Linares, J. C. A., Camputaro, L., Troccoli, G., Galimberti, H., Tallott, M., Eybner, C., Buchinger, W., Fitzal, S., Mazairac, G., Oleffe, V., Grollinger, T., Delvaux, P., Carlier, L., Braet, V., Jacques, J. -M., De Knoop, D., Nasi, L., Choi, H. K., Schmitt, M., Gentil, A., Nacul, F., Barrios, P. B., Xinkang, C., Hua, L. S., Tian, H. H., Xiaodong, C., Gualteros, W., Otero, A. A., Arango, M., Ciro, J., Jaramillo, H., Gonzalez, I., Gomez, C., Arias, A., Fonseca, M., Mora, C., Cabrera, E. G. L., Betancurth, J. L., Munoz, P., Quinonez, J. A., Castillo, M. E. G., Lopez, O., Yepes, R. P., Cuellar, D. L., Paez, G., Chaves, H. D., Ordonez, P. E., Plata, Riccardo, Pineda, M., Pulido, L. E., Jaramillo, J. S. V., Rebolledo, C., Palma, O., Soler, C., Pastrana, I., Falero, R., Perera, M. D., Garcia, A. A., Oliva, R., Delgado, H. L., Carnero, A. M., Lopez, B. L., Gallardo, A. L., Morales, A. O., Lezcano, H., Ferrer, M. I., Bess, I. Z., Canino, G. R., Ruiz, E. M. P., Cruz, O. G., Svoboda, P., Kantorova, I., Ochmann, J., Scheer, P., Kozumplik, L., Marsova, J., Edelmann, K., Chytra, I., Bosman, R., Andrejsova, H., Pachl, J., Burger, J., Kramar, F., Ulloa, M. I., Gonzalez, L., Daccach, A., Ortega, A., Cevallos, S., Cueva, B. Z., Ochoa, M., Tapia, J. V., Hurtado, J., Wong, M. C. S., Santos, R., Khamis, H., Abaza, A. H., Fekry, A., El Kordy, S., Shawky, T., El-Sayed, H., Khalil, N., Negm, N., Fisal, S., Alamin, M., Shokry, H., Elhusseny, A. Y., Radwan, A., Rashid, M., Gogichaisvili, T., Ingorokva, G., Gongadze, N., Otarashvili, A., Kleist, W., Kalkum, M., Ulrich, P., Andrews, N., Nakos, G., Karavelis, A., Archontakis, G., Myrianthefs, P., Yadav, Y., Yadav, S., Khatri, R., Baghel, A., Husain, M., Jha, D., Chhang, W. H., Dhandhania, M., Fonning, C., Iyengar, S. N., Gupta, S., Ravi, R. R., Bopiah, K. S., Herur, A., Venkataramana, N. K., Satish, A., Bhavadasan, K., Morris, R., Ramesh, S., Dewan, Y., Singh, Y., Bhagchandani, R., Bhagchandani, S., Sethurayar, V. U., Ipe, S., Sreekumar, G., Panigrahi, M., Reddy, A., Khosla, V., Pillay, H., Thomas, N., Sridhar, K., Jose, B., Kurian, N., Praharaj, S., Pillai, S., Ramana, Kiyawat, D., Maheshwari, K., Panikar, D., Chawla, J., Shenoy, S., Raja, A., Rupayana, Y., Reddy, S., Mohan, N., Kelkar, S., Johri, M., Golden, N., Maliawan, S., Fauzi, A., Farouk, U., Fakharian, E., Aramesh, A., Eghtedari, M., Ahmadzadeh, F., Gholami, A., Plunkett, P., Redican, C., Mcmahon, G., Annetta, Maria Giuseppina, Mouchaty, H., Bruzzone, E., Harding, B., Qureshi, M., Idris, Z., Jafri Abdullah, N. C., Ghazali, G., Ghani, A. R. I., Cheah, F., Cabrera, A., Gonzalez, J. L. M., Loria-Castellanos, J., Jackson, S., Hutchinson, R., Komolafe, E., Adeolu, A., Komolafe, M., Adeyemi-Doro, O., Bankole, F., Shehu, B., Danlami, V., Odebode, O., Oluwadiya, K., Sanni, A., Giebel, H., Kumar, S., Jooma, R., Mezquita, J. E., Ovelar, C. O., Portillo, M. G., Rodriguez, D., Balica, L., Oprita, B., Sklerniacof, M., Steflea, L., Bandut, L., Danil, A., Iliescu, R., Ciurea, J., El-Dawlatly, A., Alwatidy, S., Al-Yafi, W., El-Dawlatly, M., Krunic-Protic, R., Janosevic, V., Tan, J., Seah, C., Trenkler, S., Humenansky, M., Stajancova, T., Schwendt, I., Laincz, A., Julius, Z., Maros, S., Firment, J., Cifranicova, M., Saniova, B., Kalig, K., Medekova, S., Wiszt, R., Macuga, I., Hartzenberg, B., Du Plessis, G., Houlie, Z., Nathoo, N., Khumalo, S., Tracey, R., Munoz-Sanchez, A., Francisco Murillo-Cabezas, N. C., Flores-Cordero, J., Rincon- Ferrari, D., Rubi, M., Caler, L., Del Campo, M. M., Laguna, L. B., Nava, J. M., Minguillon, M. A., Lopez, A. M., Ramos-Gomez, L., De La Torre-Prados, V., Pellejero, R., Laloe, V., Mandrella, B., Suganthan, Perera, S., Mahendran, K., Stocker, R., Ludwig, S., Zimmermann, H., Denzler, U., Yutthakasemsunt, S., Kittiwattanagul, W., Piyavechvirat, P., Tapsai, P., Namuang-Jan, A., Chantapimpa, U., Watanachai, C., Subsompon, P., Pussanakawatin, W., Khunjan, P., Tangchitvittaya, S., Nilapong, S., Klangsang, T., Taechakosol, W., Srinat, A., Jerbi, Z., Borsali- Falfoul, N., Rezgui, M., Cakar, N., Ssenyonjo, H., Kobusingye, O., Lomas, G., Yates, D., Lecky, F., Bleetman, A., Baldwin, A., Jenkinson, E., Pantrini, S., Stewart, J., Contractor, N., Roberts, T., Butler, J., Pinto, A., Lee, D., Brayley, N., Robbshaw, K., Dix, C., Graham, S., Pye, S., Green, M., Kellins, A., Moulton, C., Fogg, B., Cottingham, R., Funnell, S., Shanker, U., Summers, C., Malek, L., Ashcroft, C., Powell, J., Moore, S., Buckley, S., Grocutt, M., Chambers, S., Morrice, A., Marshall, H., Harris, J., Matthews, W., Tippet, J., Mardell, S., Macmillan, F., Shaw, A., Luthra, P., Dixon, G., Ahmed, M., Young, M., Mason, S., Loveday, I., Clark, C., Taylor, S., Wilson, P., Ali, K., Greenwood, S., White, M., Perez, R., Eljamel, S., Wasserberg, J., Shale, H., Read, C., Mccarron, J., Pennell, A., Ray, G., Thurston, J., Brown, E., Jaffey, L., Graves, M., Bailey, R., Loveridge, N., Evans, G., Hughes, S., Ahmed, M. K., Richardson, J., Gallagher, C., Odedun, T., Lees, K., Foley, D., Payne, N., Pennycook, A., Griffiths, C., Moore, D., Byrne, D., Dasan, S., Banerjee, Abhishek, Mcguinness, S., Chikhani, C., Zoltie, N., Barlow, I., Stell, I., Hulse, W., Crossley, J., Watkins, L., Dorani, B., Van Viet, T., Plata R., Annetta M. G. (ORCID:0000-0001-7574-1311), and Banerjee A.

Abstract

Objective: To develop and validate practical prognostic models for death at 14 days and for death or severe disability six months after traumatic brain injury. Design: Multivariable logistic regression to select variables that were independently associated with two patient outcomes. Two models designed: "basic" model (demographic and clinical variables only) and "CT" model (basic model plus results of computed tomography). The models were subsequently developed for high and low-middle income countries separately. Setting: Medical Research Council (MRC) CRASH Trial. Subjects: 10 008 patients with traumatic brain injury. Models externally validated in a cohort of 8509. Results: The basic model included four predictors: age, Glasgow coma scale, pupil reactivity, and the presence of major extracranial injury. The CT model also included the presence of petechial haemorrhages, obliteration of the third ventricle or basal cisterns, subarachnoid bleeding, midline shift, and non-evacuated haematoma. In the derivation sample the models showed excellent discrimination (C statistic above 0.80). The models showed good calibration graphically. The Hosmer-Lemeshow test also indicated good calibration, except for the CT model in low-middle income countries. External validation for unfavourable outcome at six months in high income countries showed that basic and CT models had good discrimination (C statistic 0.77 for both models) but poorer calibration. Conclusion: Simple prognostic models can be used to obtain valid predictions of relevant outcomes in patients with traumatic brain injury.

Published
2008

18. Effect of intravenous corticosteroids on death within 14 days in 10008 adults with clinically significant head injury (MRC CRASH trial): Randomised placebo-controlled trial

Author

Olldashi, F., Muzha, I., Filipi, N., Lede, R., Copertari, P., Traverso, C., Copertari, A., Vergara, E. A., Montenegro, C., De Huidobro, R. R., Surt, K., Cialzeta, J., Lazzeri, S., Pinero, G., Ciccioli, F., Videtta, W., Barboza, M. F., Svampa, S., Sciuto, V., Domeniconi, G., Bustamante, M., Waschbusch, M., Gullo, M. P., Drago, D. A., Linares, J. C. A., Camputaro, L., Troccoli, G., Galimberti, H., Tallott, M., Eybner, C., Buchinger, W., Fitzal, S., Mazairac, G., Oleffe, V., Grollinger, T., Delvaux, P., Carlier, L., Braet, V., Jacques, J. -M., De Knoop, D., Nasi, L., Choi, H. K., Schmitt, M., Gentil, A., Nacul, F., Barrios, P. B., Xinkang, C., Hua, L. S., Tian, H. H., Xiaodong, C., Gualteros, W., Otero, A. A., Arango, M., Ciro, J., Jaramillo, H., Garcia, G., Gonzalez, I., Gomez, C., Arias, A., Fonseca, M., Mora, C., Cabrera, E. G. L., Betancurth, J. L., Munoz, P., Quinonez, J. A., Castillo, M. E. G., Lopez, O., Yepes, R. P., Cuellar, D. L., Paez, G., Chaves, H. D., Ordonez, P. E., Plata, Riccardo, Pineda, M., Pulido, L. E., Jaramillo, J. S. V., Rebolledo, C., Palma, O., Soler, C., Pastrana, I., Falero, R., Perera, M. D., Garcia, A. A., Oliva, R., Delgado, H. L., Carnero, A. M., Lopez, B. L., Gallardo, A. L., Morales, A. O., Lezcano, H., Ferrer, M. I., Bess, I. Z., Canino, G. R., Ruiz, E. M. P., Cruz, O. G., Svoboda, P., Kantorova, I., Ochmann, J., Scheer, P., Kozumplik, L., Marsova, J., Edelmann, K., Chytra, I., Bosman, R., Andrejsova, H., Pachl, J., Burger, J., Kramar, F., Ulloa, M. I., Gonzalez, L., Daccach, A., Ortega, A., Cevallos, S., Cueva, B. Z., Ochoa, M., Tapia, J. V., Hurtado, J., Wong, M. C. S., Santos, R., Khamis, H., Abaza, A. H., Fekry, A., El Kordy, S., Shawky, T., El-Sayed, H., Khalil, N., Negm, N., Fisal, S., Shokry, H., Alamin, M., Elhusseny, A. Y., Radwan, A., Rashid, M., Gogichaisvili, T., Ingorokva, G., Gongadze, N., Otarashvili, A., Kleist, W., Kalkum, M., Ulrich, P., Andrews, N., Nakos, G., Karavelis, A., Archontakis, G., Myrianthefs, P., Yadav, Y., Yadav, S., Khatri, R., Baghel, A., Husain, M., Jha, D., Hoong Chhang, W., Dhandhania, M., Fonning, C., Iyengar, S. N., Gupta, S., Ravi, R. R., Bopiah, K. S., Herur, A., Venkataramana, N. K., Satish, A., Bhavadasan, K., Morris, R., Ramesh, S., Dewan, Y., Singh, Y., Bhagchandani, R., Bhagchandani, S., Sethurayar, V., Ipe, S., Sreekumar, G., Panigrahi, M., Reddy, A., Khosla, V., Pillay, H., Thomas, N., Sridhar, K., Jose, B., Kurian, N., Praharaj, S., Pillai, S., Ramana, Kiyawat, D., Maheshwari, K., Panikar, D., Chawla, J., Shenoy, S., Raja, A., Rupayana, Y., Reddy, S., Mohan, N., Kelkar, S., Johri, M., Golden, N., Maliawan, S., Fauzi, A., Farouk, U., Fakharian, E., Aramesh, A., Eghtedari, M., Ahmadzadeh, F., Gholami, A., Plunkett, P., Redican, C., Mcmahon, G., Annetta, Maria Giuseppina, Mouchaty, H., Bruzzone, E., Harding, B., Qureshi, M., Idris, Z., Abdullah, J., Ghazali, G., Ghani, A., Cheah, F., Gonzalez, J., Loria-Castellanos, J., Jackson, S., Hutchinson, R., Komolafe, E., Adeolu, A., Komolafe, M., Adeyemi-Doro, O., Bankole, F., Shehu, B., Danlami, V., Odebode, O., Oluwadiya, K., Sanni, A., Giebel, H., Kumar, S., Jooma, R., Mezquita, J., Ortiz Ovelar, C., Gonzales-Portillo, M., Rodriguez, D., Balica, L., Oprita, B., Sklerniacof, M., Steflea, L., Bandut, L., Danil, A., Iliescu, R., Ciurea, J., El-Dawlatly, A., Alwatidy, S., Al-Yafi, W., El-Dawlatly, M., Krunic-Protic, R., Janosevic, V., Tan, J., Seah, C., Trenkler, S., Humenansky, M., Stajancova, T., Schwendt, I., Laincz, A., Julius, Z., Maros, S., Firment, J., Cifranicova, M., Saniova, B., Kalig, K., Medekova, S., Wiszt, R., Macsuga, I., Hartzenberg, B., Du Plessis, G., Houlie, Z., Nathoo, N., Khumalo, S., Tracey, R., Munoz-Sanchez, A., Murillo-Cabezas, F., Flores-Cordero, J., Rincon-Ferrari, D., Rubi, M., Caler, L., Del Campo, M., Laguna, L., Manuel Nava, J., Minguillon, M., Lopez, A., Ramos-Gomez, L., De La Torre-Prados, V., Pellejero, R., Laloe, V., Mandrella, B., Suganthan, Perera, S., Mahendran, K., Stocker, R., Ludwig, S., Zimmermann, H., Denzler, U., Yutthakasemsunt, S., Kittiwattanagul, W., Watanachai, C., Subsompon, P., Pussanakawatin, W., Khunjan, P., Tangchitvittaya, S., Nilapong, S., Klangsang, T., Taechakosol, W., Srinat, A., Jerbi, Z., Borsali-Falfoul, N., Rezgui, M., Cakar, N., Ssenyonjo, H., Kobusingye, O., Lomas, G., Yates, D., Lecky, F., Bleetman, A., Baldwin, A., Jenkinson, E., Pantrini, S., Stewart, J., Contractor, N., Roberts, T., Butler, J., Pinto, A., Lee, D., Brayley, N., Robbshaw, K., Dix, C., Graham, S., Pye, S., Green, M., Kellins, A., Moulton, C., Fogg, B., Cottingham, R., Funnell, S., Shanker, U., Summers, C., Malek, L., Ashcroft, C., Powell, J., Moore, S., Buckley, S., Grocutt, M., Chambers, S., Morrice, A., Marshall, H., Harris, J., Matthews, W., Tippet, J., Mardell, S., Macmillan, F., Shaw, A., Luthra, P., Dixon, G., Ahmed, M., Young, M., Mason, S., Loveday, I., Clark, C., Taylor, S., Wilson, P., Ali, K., Greenwood, S., White, M., Perez, R., Eljamel, S., Wasserberg, J., Shale, H., Read, C., Mccarron, J., Pennell, A., Ray, G., Thurston, J., Brown, E., Jaffey, L., Graves, M., Bailey, R., Loveridge, N., Evans, G., Hughes, S., Richardson, J., Gallagher, C., Odedun, T., Lees, K., Foley, D., Payne, N., Pennycook, A., Griffiths, C., Moore, D., Byrne, D., Dasan, S., Banerjee, Abhishek, Mcguinness, S., Chikhani, C., Zoltie, N., Barlow, I., Stell, I., Hulse, W., Crossley, J., Watkins, L., Dorani, B., Vanviet, T., Saladino, P., Cabrera, A., Baigent, C., Bracken, M., Chadwick, D., Curley, K., Duley, L., Farrell, B., Haegi, M., Nickson, G., Peto, R., Pickard, J., Roberts, I., Sandercock, P., Teasdale, G., Collins, R., Haines, S., Macmahon, S., Warlow, C., Edwards, P., Ritchie, N., Shakur, H., Ramos, M., Barnetson, L., Fernandes, J., Tooth, D., Free, C., Narayanan, L., Collander, J., Abernethy, J., Bardswell, J., Mashru, R., Godward, C., Afolabi, L., Ritchie, A., Hosford, T., Collingwood, A., Massey, S., Plata R., Annetta M. (ORCID:0000-0001-7574-1311), Banerjee A., Olldashi, F., Muzha, I., Filipi, N., Lede, R., Copertari, P., Traverso, C., Copertari, A., Vergara, E. A., Montenegro, C., De Huidobro, R. R., Surt, K., Cialzeta, J., Lazzeri, S., Pinero, G., Ciccioli, F., Videtta, W., Barboza, M. F., Svampa, S., Sciuto, V., Domeniconi, G., Bustamante, M., Waschbusch, M., Gullo, M. P., Drago, D. A., Linares, J. C. A., Camputaro, L., Troccoli, G., Galimberti, H., Tallott, M., Eybner, C., Buchinger, W., Fitzal, S., Mazairac, G., Oleffe, V., Grollinger, T., Delvaux, P., Carlier, L., Braet, V., Jacques, J. -M., De Knoop, D., Nasi, L., Choi, H. K., Schmitt, M., Gentil, A., Nacul, F., Barrios, P. B., Xinkang, C., Hua, L. S., Tian, H. H., Xiaodong, C., Gualteros, W., Otero, A. A., Arango, M., Ciro, J., Jaramillo, H., Garcia, G., Gonzalez, I., Gomez, C., Arias, A., Fonseca, M., Mora, C., Cabrera, E. G. L., Betancurth, J. L., Munoz, P., Quinonez, J. A., Castillo, M. E. G., Lopez, O., Yepes, R. P., Cuellar, D. L., Paez, G., Chaves, H. D., Ordonez, P. E., Plata, Riccardo, Pineda, M., Pulido, L. E., Jaramillo, J. S. V., Rebolledo, C., Palma, O., Soler, C., Pastrana, I., Falero, R., Perera, M. D., Garcia, A. A., Oliva, R., Delgado, H. L., Carnero, A. M., Lopez, B. L., Gallardo, A. L., Morales, A. O., Lezcano, H., Ferrer, M. I., Bess, I. Z., Canino, G. R., Ruiz, E. M. P., Cruz, O. G., Svoboda, P., Kantorova, I., Ochmann, J., Scheer, P., Kozumplik, L., Marsova, J., Edelmann, K., Chytra, I., Bosman, R., Andrejsova, H., Pachl, J., Burger, J., Kramar, F., Ulloa, M. I., Gonzalez, L., Daccach, A., Ortega, A., Cevallos, S., Cueva, B. Z., Ochoa, M., Tapia, J. V., Hurtado, J., Wong, M. C. S., Santos, R., Khamis, H., Abaza, A. H., Fekry, A., El Kordy, S., Shawky, T., El-Sayed, H., Khalil, N., Negm, N., Fisal, S., Shokry, H., Alamin, M., Elhusseny, A. Y., Radwan, A., Rashid, M., Gogichaisvili, T., Ingorokva, G., Gongadze, N., Otarashvili, A., Kleist, W., Kalkum, M., Ulrich, P., Andrews, N., Nakos, G., Karavelis, A., Archontakis, G., Myrianthefs, P., Yadav, Y., Yadav, S., Khatri, R., Baghel, A., Husain, M., Jha, D., Hoong Chhang, W., Dhandhania, M., Fonning, C., Iyengar, S. N., Gupta, S., Ravi, R. R., Bopiah, K. S., Herur, A., Venkataramana, N. K., Satish, A., Bhavadasan, K., Morris, R., Ramesh, S., Dewan, Y., Singh, Y., Bhagchandani, R., Bhagchandani, S., Sethurayar, V., Ipe, S., Sreekumar, G., Panigrahi, M., Reddy, A., Khosla, V., Pillay, H., Thomas, N., Sridhar, K., Jose, B., Kurian, N., Praharaj, S., Pillai, S., Ramana, Kiyawat, D., Maheshwari, K., Panikar, D., Chawla, J., Shenoy, S., Raja, A., Rupayana, Y., Reddy, S., Mohan, N., Kelkar, S., Johri, M., Golden, N., Maliawan, S., Fauzi, A., Farouk, U., Fakharian, E., Aramesh, A., Eghtedari, M., Ahmadzadeh, F., Gholami, A., Plunkett, P., Redican, C., Mcmahon, G., Annetta, Maria Giuseppina, Mouchaty, H., Bruzzone, E., Harding, B., Qureshi, M., Idris, Z., Abdullah, J., Ghazali, G., Ghani, A., Cheah, F., Gonzalez, J., Loria-Castellanos, J., Jackson, S., Hutchinson, R., Komolafe, E., Adeolu, A., Komolafe, M., Adeyemi-Doro, O., Bankole, F., Shehu, B., Danlami, V., Odebode, O., Oluwadiya, K., Sanni, A., Giebel, H., Kumar, S., Jooma, R., Mezquita, J., Ortiz Ovelar, C., Gonzales-Portillo, M., Rodriguez, D., Balica, L., Oprita, B., Sklerniacof, M., Steflea, L., Bandut, L., Danil, A., Iliescu, R., Ciurea, J., El-Dawlatly, A., Alwatidy, S., Al-Yafi, W., El-Dawlatly, M., Krunic-Protic, R., Janosevic, V., Tan, J., Seah, C., Trenkler, S., Humenansky, M., Stajancova, T., Schwendt, I., Laincz, A., Julius, Z., Maros, S., Firment, J., Cifranicova, M., Saniova, B., Kalig, K., Medekova, S., Wiszt, R., Macsuga, I., Hartzenberg, B., Du Plessis, G., Houlie, Z., Nathoo, N., Khumalo, S., Tracey, R., Munoz-Sanchez, A., Murillo-Cabezas, F., Flores-Cordero, J., Rincon-Ferrari, D., Rubi, M., Caler, L., Del Campo, M., Laguna, L., Manuel Nava, J., Minguillon, M., Lopez, A., Ramos-Gomez, L., De La Torre-Prados, V., Pellejero, R., Laloe, V., Mandrella, B., Suganthan, Perera, S., Mahendran, K., Stocker, R., Ludwig, S., Zimmermann, H., Denzler, U., Yutthakasemsunt, S., Kittiwattanagul, W., Watanachai, C., Subsompon, P., Pussanakawatin, W., Khunjan, P., Tangchitvittaya, S., Nilapong, S., Klangsang, T., Taechakosol, W., Srinat, A., Jerbi, Z., Borsali-Falfoul, N., Rezgui, M., Cakar, N., Ssenyonjo, H., Kobusingye, O., Lomas, G., Yates, D., Lecky, F., Bleetman, A., Baldwin, A., Jenkinson, E., Pantrini, S., Stewart, J., Contractor, N., Roberts, T., Butler, J., Pinto, A., Lee, D., Brayley, N., Robbshaw, K., Dix, C., Graham, S., Pye, S., Green, M., Kellins, A., Moulton, C., Fogg, B., Cottingham, R., Funnell, S., Shanker, U., Summers, C., Malek, L., Ashcroft, C., Powell, J., Moore, S., Buckley, S., Grocutt, M., Chambers, S., Morrice, A., Marshall, H., Harris, J., Matthews, W., Tippet, J., Mardell, S., Macmillan, F., Shaw, A., Luthra, P., Dixon, G., Ahmed, M., Young, M., Mason, S., Loveday, I., Clark, C., Taylor, S., Wilson, P., Ali, K., Greenwood, S., White, M., Perez, R., Eljamel, S., Wasserberg, J., Shale, H., Read, C., Mccarron, J., Pennell, A., Ray, G., Thurston, J., Brown, E., Jaffey, L., Graves, M., Bailey, R., Loveridge, N., Evans, G., Hughes, S., Richardson, J., Gallagher, C., Odedun, T., Lees, K., Foley, D., Payne, N., Pennycook, A., Griffiths, C., Moore, D., Byrne, D., Dasan, S., Banerjee, Abhishek, Mcguinness, S., Chikhani, C., Zoltie, N., Barlow, I., Stell, I., Hulse, W., Crossley, J., Watkins, L., Dorani, B., Vanviet, T., Saladino, P., Cabrera, A., Baigent, C., Bracken, M., Chadwick, D., Curley, K., Duley, L., Farrell, B., Haegi, M., Nickson, G., Peto, R., Pickard, J., Roberts, I., Sandercock, P., Teasdale, G., Collins, R., Haines, S., Macmahon, S., Warlow, C., Edwards, P., Ritchie, N., Shakur, H., Ramos, M., Barnetson, L., Fernandes, J., Tooth, D., Free, C., Narayanan, L., Collander, J., Abernethy, J., Bardswell, J., Mashru, R., Godward, C., Afolabi, L., Ritchie, A., Hosford, T., Collingwood, A., Massey, S., Plata R., Annetta M. (ORCID:0000-0001-7574-1311), and Banerjee A.

Abstract

Background Corticosteroids have been used to treat head injuries for more than 30 years. In 1997, findings of a systematic review suggested that these drugs reduce risk of death by 1-2%. The CRASH trial—a multicentre international collaboration—aimed to confirm or refute such an effect by recruiting 20 000 patients. In May, 2004, the data monitoring committee disclosed the unmasked results to the steering committee, which stopped recruitment. Methods 10 008 adults with head injury and a Glasgow coma score (GCS) of 14 or less within 8 h of injury were randomly allocated 48 h infusion of corticosteroids (methylprednisolone) or placebo. Primary outcomes were death within 2 weeks of injury and death or disability at 6 months. Prespecified subgroup analyses were based on injury severity (GCS) at randomisation and on time from injury to randomisation. Analysis was by intention to treat. Effects on outcomes within 2 weeks of randomisation are presented in this report. This study is registered as an International Standard Randomised Controlled Trial, number ISRCTN74459797. Findings Compared with placebo, the risk of death from all causes within 2 weeks was higher in the group allocated corticosteroids (1052 [21·1%] vs 893 [17·9%] deaths; relative risk 1·18 [95% CI 1·09-1·27]; p=0·0001). The relative increase in deaths due to corticosteroids did not differ by injury severity (p=0·22) or time since injury (p=0·05). Interpretation Our results show there is no reduction in mortality with methylprednisolone in the 2 weeks after head injury. The cause of the rise in risk of death within 2 weeks is unclear.

Published
2004

35. Coordination in a Multi-Cell Multi-Antenna Multi-User W-CDMA System: A Beamforming Approach.

Author

Botella, C., Pinero, G., Gonzalez, A., and De Diego, M.

Abstract

The problem of designing joint power control and optimal beamforming (JPCOB) algorithms for the downlink of a coordinated multi-cell WCDMA system is considered throughout this paper. In this case, the JPCOB design is formulated as the problem of minimizing the total transmitted power in the coordinated multi-cell system, subject to a certain quality of service requirement for each user. In this paper, the performance of two JPCOB algorithms based on different beamforming approaches is compared over the coordinated multi-cell system. The first one, obtains local beamformers by means of the well-known virtual uplink-downlink duality. In contrast, the second algorithm implements multi-base beamformers, taking into account match filter equalizers at the receivers. Moreover, realistic system parameters, such as per-base station power constraints or the asynchronous nature of the signals arriving at the receivers, are taken into account. Simulation results show that the algorithm based on multi-base beamforming presents attractive properties, such as an inherent multi-base scheduling technique or a decreasing total transmitted power as the degree of coordination between base stations is increased. [ABSTRACT FROM PUBLISHER]

Published
2008
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36. Osteopontin (OPN) distribution in premalignant and malignant lesions of oral epithelium and expression in cell lines derived from squamous cell carcinoma of the oral cavity.

Author

Devoll, Robert E., Wei Li, Woods, Kendra V., Pinero, Gerald J., Butler, William T., Farach-Carson, Mary C., Happonen, Risto-Pekka, Devoll, R E, Li, W, Woods, K V, Pinero, G J, Butler, W T, Farach-Carson, M C, and Happonen, R P

Subjects
OSTEOPONTIN, CELL lines, CANCER cells, ORAL cancer, IMMUNOHISTOCHEMISTRY, PATHOLOGY, PROTEIN analysis, PROTEIN metabolism, RNA analysis, GLYCOPROTEIN analysis, HYPERPLASIA, COMPARATIVE studies, CYTOCHEMISTRY, EPITHELIAL cells, GLYCOPROTEINS, IMMUNOBLOTTING, RESEARCH methodology, MEDICAL cooperation, MOUTH tumors, NUCLEOTIDE separation, ORAL mucosa, PRECANCEROUS conditions, PROTEINS, RESEARCH, SQUAMOUS cell carcinoma, EVALUATION research, CARCINOMA in situ, CANCER cell culture
Abstract

The objectives of this study were to assess the immunolocalization of human osteopontin (OPN) in oral lesions and to identify human cell lines of oral squamous cell carcinoma (OSCC) origin that express OPN mRNA. OPN was localized using immunohistochemistry in the following oral specimens: normal epithelium (n=6), epithelial hyperplasia (n=4), epithelial dysplasia (n=28), carcinoma in situ (n=11) and squamous cell carcinoma (n=43). Cell lines UMSCC-1, MDA TU 138, MDA 686LN, SCC4, SCC9, SCC25, CAL 27 and MDA 1483 were characterized for OPN mRNA expression using Northern blotting. OPN was not detected in normal oral epithelium. Intracellular and intercellular immunoreactivity was seen in 75% of hyperplasias, 57% of dysplasias, 54% of carcinoma in situ and 67% of squamous cell carcinomas. UMSCC-1 expressed high levels of OPN mRNA. We conclude that OPN protein is detectable in premalignant and malignant lesions arising from oral epithelium. UMSCC-1 may be a useful cell line in which to conduct in vitro studies designed to clarify the role of OPN in OSCC. [ABSTRACT FROM AUTHOR]

Published
1999
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37. Human Gingival Fibroblast Production of Interferon.

Author

ROSE, G. G., PINERO, G. J., O'NEILL, P. A., NIKAI, H., and MAHAN, C. J.

Subjects
DENTAL chemistry, GINGIVA, FIBROBLASTS, CELL lines, INTERFERON inducers, INTERFERONS, RNA synthesis, ENZYME inhibitors, SERUM
Abstract

Three human gingival fibroblast cell lines were used to determine whether they could be induced by a synthetic RNA and super-induced by metabolic inhibitors to produce interferon (IFN-β). When established procedures were followed for human fetal or newborn skin fibroblast cell lines, the adult gingival fibroblasts produced comparable amounts of IFN-β. It was shown that the superinducers alone would not cause an IFN-β production response, and that the absence of serum in the production medium also inhibited the production of IFN-β. The effect of IFN-β on cell growth was carried out in T-flasks seeded with 105 HEp-2 cells. After one and two wk, the cells of triplicate control flasks and triplicate flasks containing various dilutions of the production media were enumerated to determine a cell multiplication inhibition (CMI) value. A correlation between the IFN-β content and the CMI effect, however, was not obtained, and it was concluded that other CMI agents, possibly more potent than the IFN-β, were being produced by the stimulated human gingival fibroblasts. Cell protein assays which gave a high ng/ cell protein content correlated with TEM micrographs which showed clusters of complex lysosomes, primarily in cells cultured in the IFN-β-containing nutrient. However, since commercial IFN-β initiated no such lysosomal response, it was further concluded that the complex lysosomes were due to CMI agent(s) other than IFN-β. [ABSTRACT FROM AUTHOR]

Published
1984
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38. Phagocytosis of Latex Beads by a Human Gingival Epithelial-Like Cell Line in Tissue Culture.

Author

PINERO, G. J. and WHITE, R. R.

Subjects
PHAGOCYTOSIS, GINGIVA, EPITHELIAL cells, PERIODONTAL disease, LATEX, IMMUNE response, CULTURES (Biology), ELECTRON microscopy
Abstract

Phagocytosis by a human gingival epithelial-like cell line in tissue culture was studied using latex beads as a marker. Electron microscopic and chemical analyses revealed that the cells ingested the beads in a quantitative and reproducible manner. This phagocytosis system is potentially useful for studying the effects of dental plaque on cell metabolism. [ABSTRACT FROM AUTHOR]

Published
1977
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40. Microfilaments in Human Cementoblasts and Periodontal Fibroblasts

Author

Yamasaki, A., Rose, G. G., Pinero, G. J., and Mahan, C. J.

Abstract

An electron microscopic surveywas carried out on the human periodontal ligament (PDL), including a part of the gingival connective tissue attached to extracted tooth roots (11 functioning premolars and 6 nonfunctioning third molars) in order to examine the characteristics of microfilaments (6 nm) in cementoblasts and PDL fibroblasts. Microfilaments which were grouped in bundles with semiperiodic dense nodes or in meshworks just beneath the cell membrane were seen predominantly in the cells characterized by their ultrastructurally immature appearance. These microfilaments were more commonly observed in third molar PDL than in premolar PDL and, in general, more conspicuous in cementoblasts than in fibroblasts. The significance of microfilaments in human PDL is discussed, particularly in relation to cell differentiation and morphogenesis.

Published
1987
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41. Ultrastructural and Morphometric Analyses of Human Cementoblasts and Periodontal Fibroblasts

Author

Yamasaki, A., Rose, G. G., Pinero, G. J., and Manan, C. J.

Abstract

In order to elucidate the cytologicalcharacteristics of human cementoblasts which distinguish them from periodontal fibroblasts, the periodontal ligament and gingival connective tissue attached to 37 extracted teeth from 27 patients (ages 10‐67) were analyzed by electron microscopy coupled with a morphometric procedure. The cementoblasts largely consisted of either immature or restingtypes of collagen‐producing cells (CPC), both of which were poor in the rough endoplasmic reticulum and Golgi complex; these organelles were well‐developed in the relatively less common activecementoblasts. The cementoblasts consistently revealed a higher mean‐volume‐density per tissue unit than the fibroblasts and sometimes were grouped into clusters with the formation of junctional apparatuses. The relative volume of glycogen particles per cytoplasm was significantly higher in the cementoblasts, whereas the rough endoplasmic reticulum was higher in the fibroblasts. From the present study, it is suggested that the cementoblasts are functionally less active CPC than the periodontal fibroblasts.

Published
1987
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47. On the progressive nature of grain crushing

Author

Ciantia Matteo O., Piñero Gema, Zhu Jian, and Shire Tom

Subjects
Physics, QC1-999
Abstract

In this work acoustic emission (AE) is used as experimental evidence of the progressive nature of grain crushing. Stress controlled high pressure oedometric compression test are carried out on 1.2 mm monodisperse samples of glass beads. It was observed that the granular assembly starts to experience particle breakage at a vertical stress of about 25MPa. When this yield pressure is exceeded the glass beads start to break emitting loud impulsive sound and the vertical displacement increases rapidly. The load was increased beyond the yield stress and at each increment while the vertical stress remained constant the sample continued to emit sound. The emission of sound at a constant vertical stress indicates that crushing is a progressive failure mechanism; once the first crushing event occurs, the structure starts to rearrange causing other crushing events to occur and additional settlement. In particular, two signal processing algorithms are used on the samples of the acoustic signal to obtain two additional metrics of the crushing evolution. The first is the cumulative energy versus time. The second is the number of crushing events versus time, which is based on the automatic detection of the peaks of the sound signal envelope. There is a clear correlation between the cumulative acoustic energy emitted and the observed sample displacement. Using laser scanning, the evolution of the particle size distribution and particle shape are measured in detail so that a link between the acoustic data and the crushing intensity is established. The crushing intensity was controlled using materials with different strengths.

Published
2017
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