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4. Emergenze in Otorinolaringoiatria

Author

DANGELO L, SALERNO G, FIORILLO G, MESOLELLA M, COSTA, Giuseppe, TESTA, Domenico, Luigi D'Angelo, Grazia Salerno,Giuseppe Fiorillo, Giuseppe Costa, Massimo Mesolella, Domenico Testa, F. Coraggio, Dangelo, L, Salerno, G, Fiorillo, G, Costa, Giuseppe, Mesolella, M, and Testa, Domenico

Published
1997

13. Abstracts

Author

Doulaptsis, C, Masci, PG, Goetschalckx, K, Janssens, S, Bogaert, J, Ferreira, VM, Piechnik, SK, DallArmellina, E, Karamitsos, TD, Francis, JM, Ntusi, N, Holloway, C, Choudhury, RP, Kardos, A, Robson, MD, Friedrich, MG, Neubauer, S, Miszalski-Jamka, T, Sokolowska, B, Szczeklik, W, Karwat, K, Miszalski-Jamka, K, Belzak, K, Malek, L, Mazur, W, Kereiakes, DJ, Jazwiec, P, Musial, J, Pedrotti, P, Masciocco, G, DAngelo, L, Milazzo, A, Quattrocchi, G, Zanotti, F, Frigerio, M, Roghi, A, Rimoldi, O, Kaasalainen, T, Kivistö, S, Holmström, M, Pakarinen, S, Hänninen, H, Sipilä, O, Lauerma, K, Banypersad, S.M, Fontana, M, Maestrini, V, Sado, D.M, Pinney, J, Wechalekar, A.D, Gillmore, J.D, Lachmann, H, Hawkins, P.N, Moon, J.C, Barone-Rochette, G, Pierard, S, Seldrum, S, de Ravensteen, CM, Melchior, J, Maes, F, Pouleur, A-C, Vancraeynest, D, Pasquet, A, Vanoverschelde, J-L, L Gerber, B, Captur, G, Muthurangu, V, Flett, AS, Wilson, R, Barison, A, Anderson, S, Cook, C, Sado, DM, McKenna, WJ, Mohun, TJ, Elliott, PM, Moon, JC, Pepe, A, Meloni, A, Gulino, L, Rossi, G, Paci, C, Spasisno, A, keilberg, P, Restaino, G, Resta, MC, Positano, V, lombardi, M, Reiter, U, Reiter, G, Kovacs, G, Schmidt, A, Olschewski, H, Fuchsjäger, M, Macmillan, A, Dabir, D, Rogers, T, Monaghan, M, Nagel, E, Puntmann, V, Semaan, E, Spottiswoode, B, Freed, B, Carr, M, Wasielewski, M, Fortney-Campione, K, Shah, S, Carr, J, Markl, M, Collins, J, Sung, YM, Hinojar, R, Ucar, EA, Dabir, D, Voigt, T, Gaddum, N, Schaeffter, T, Nagel, E, Puntmann, VO, Dabir, D, Rogers, T, Ucar, EA, Kidambi, A, Plein, S, Gebker, R, Schnackenburg, B, Voigt, T, Schaeffter, T, Nagel, E, Puntmann, VO, McAlindon, E, Bucciarelli-Ducci, C, Sado, D, Maestrini, V, Piechnik, S, Porter, J, Yamamura, J, Fischer, R, Moon, J, Symons, R, Doulaptsis, C, Masci, P.G, Goetschalckx, K, Dymarkowski, S, Janssens, S, Bogaert, J, Yalin, K, Golcuk, E, Ozer, CS, Buyukbayrak, H, Yilmaz, R, Dursun, M, Bilge, AK, Adalet, K, Reinstadler, SJ, Klug, G, Feistritzer, HJ, Mayr, A, Harrasser, B, Krauter, L, Mair, J, Schocke, MF, Pachinger, O, Metzler, B, Rigolli, M, To, A, Edwards, C, Ding, P, Christiansen, J, Rodríguez-Palomares, JF, Ortiz, JT, Bucciarelli, C, Lee, D, Wu, E, Bonow, RO, Karwat, K, Tomala, M, Miszalski-Jamka, K, Licholaj, S, Mazur, W, Kereiakes, DJ, Nessler, J, Zmudka, K, Jazwiec, P, Miszalski-Jamka, T, Peltonen, J, Kaasalainen, T, Kivistö, S, Holmström, M, Lauerma, K, Rutz, T, Meierhofer, C, Martinoff, S, Ewert, P, Hess, J, Stern, H, Fratz, S, Groarke, JD, Waller, AH, Blankstein, R, Kwong, RY, Steigner, M, Alizadeh, Z, Alizadeh, A, Khajali, Z, Mohammadzadeh, A, Kaykhavani, A, Heidarali, M, Singh, A, Bekele, S, Gunarathne, A, Khan, J, Nazir, SN, Steadman, CD, Kanagala, P, Horsfield, MA, McCann, GP, Duncan, RF, Dundon, BK, Nelson, AJ, Williams, K, Carbone, A, Worthley, MI, Zaman, A, Worthley, SG, Monney, P, Piccini, D, Rutz, T, Vincenti, G, Koestner, S, Stuber, M, Schwitter, J, Gripari, P, Maffessanti, F, Pontone, G, Andreini, D, Bertella, E, Mushtaq, S, Caiani, EG, Pepi, M, El ghannudi, S, Nghiem, A, Germain, P, Jeung, M-J, Roy, C, Gangi, A, Nucifora, G, Muser, D, Masci, PG, Barison, A, Piccoli, G, Rebellato, L, Puppato, M, Gasparini, D, Lombardi, M, Proclemer, A, Nucifora, G, Muser, D, Masci, PG, Barison, A, Piccoli, G, Rebellato, L, Puppato, M, Gasparini, D, Lombardi, M, Proclemer, A, Pöyhönen, P, Kivistö, S, Holmströn, M, Hänninen, H, Thorning, C, Bickelhaupt, S, Kampmann, C, Wentz, KU, Widmer, U, Juli, CF, Miszalski-Jamka, K, Klys, J, Glowacki, J, Kijas, M, Miszalski-Jamka, T, Adamczyk, T, Kwiecinski, R, Bogucka-Czapska, J, Ozaist, M, Mazur, W, Kluczewska, E, Kalarus, Z, Kukulski, T, Karakus, G, Marzluf, B, Bonderman, D, Tufaro, C, Pfaffenberger, S, Babyev, J, Maurer, G, Mascherbauer, J, Kockova, R, Tintera, J, Kautznerova, D, Cerna, D, Sedlacek, K, Kryze, L, El-Husseini, W, Sikula, V, Segetova, M, Kautzner, J, Vasconcelos, M, Lebreiro, A, Martins, E, Cardoso, JS, Madureira, AJ, Ramos, I, Maciel, MJ, Florian, A, Ludwig, A, Rösch, S, Sechtem, U, Yilmaz, A, Monmeneu, J.V, López-Lereu, M.P, Bonanad, C, Sanchis, J, Chaustre, F, Merlos, P, Valero, E, Bodí, V, Chorro, F.J, Yalin, K, Golcuk, E, Ozer, CS, Buyukbayrak, H, Yilmaz, R, Dursun, M, Bilge, AK, Adalet, K, Klug, G, Reinstadler, SJ, Feistritzer, HJ, Mayr, A, Riegler, N, Schocke, M, Esterhammer, R, Kremser, C, Pachinger, O, Metzler, B, Siddiqi, N, Cameron, D, Neil, C, Jagpal, B, Singh, S, Schwarz, K, Papadopoulou, S, Frenneaux, MP, Dawson, D, Robbers, LFHJ, Eerenberg, ES, Teunissen, PFA, Jansen, MF, Hollander, MR, Horrevoets, AJG, Knaapen, P, Nijveldt, R, Levi, MM, van Rossum, AC, Niessen, HWM, Marcu, CB, Beek, AM, van Royen, N, Everaars, H, Robbers, LFHJ, Nijveldt, R, Beek, AM, Teunissen, PFA, Hirsch, A, van Royen, N, Zijlstra, F, Piek, JJ, van Rossum, AC, Goitein, O, Grupper, A, Hamdan, A, Eshet, Y, Beigel, R, Medvedofsky, D, Herscovici, R, Konen, E, Hod, H, Matetzky, S, Cadenas, R, Iniesta, AM, Refoyo, E, Antorrena, I, Guzman, G, Cuesta, E, Salvador, O, López, T, Moreno, M, López-Sendon, JL, Alam, SR, Spath, N, Richards, J, Dweck, M, Shah, A, Lang, N, Semple, S, MacGillivray, T, Mckillop, G, Mirsadraee, S, Pessotto, R, Zamvar, V, Newby, DE, Henriksen, P, Reiter, G, Reiter, U, Kovacs, G, Olschewski, H, Fuchsjäger, M, Ahmad, S, Raza, U, Malik, A, Sun, JP, Eisner, R, Mazur, W, ODonnell, R, Positano, V, Meloni, A, Santarelli, MF, Landini, L, Tassi, C, Grimaldi, S, Gulino, L, De Marchi, D, Chiodi, E, Renne, S, Lombardi, M, Pepe, A, Wu, L, Germans, T, Güçlü, A, Allaart, CP, van Rossum, AC, Kalisz, K, Lehenbauer, K, Katz, D, Bi, X, Cordts, M, Guetter, C, Jolly, M-P, Freed, B, Shah, S, Markl, M, Flukiger, J, Carr, J, Collins, J, Osiak, A, Tyrankiewicz, U, Jablonska, M, Jasinski, K, Jochym, PT, Chlopicki), S, Skorka, T, Kalisz, K, Semaan, E, Katz, D, Bi, X, Cordts, M, Guetter, C, Jolly, MP, Freed, B, Flukiger, J, Lee, D, Kansal, P, Shah, S, Markl, M, Carr, J, Collins, J, Groarke, JD, Shah, RV, Waller, AH, Abbasi, SA, Kwong, RY, Blankstein, R, Steigner, M, Chin, CWL, Semple, S, Malley, T, White, A, Prasad, S, Newby, DE, Dweck, M, Pepe, A, Meloni, A, Lai, ME, Vaquer, S, Gulino, L, De Marchi, D, Cuccia, L, Midiri, M, Vallone, A, Positano, V, Lombardi, M, Pedrotti, P, Milazzo, A, Quattrocchi, G, Roghi, A, Rimoldi, O, Barison, A, De Marchi, D, Masci, P, Milanesi, M, Aquaro, GD, Keilberg, P, Positano, V, Lombardi, M, Positano, Vincenzo, Barison, Andrea, Pugliese, Nicola Riccardo, Masci, Piergiorgio, Del Franco, Annamaria, Aquaro, Giovanni Donato, Landini, Luigi, Lombardi, Massimo, Dieringer, MA, Deimling, M, Fuchs, K, Winter, L, Kraus, O, Knobelsdorff-Brenkenhoff, FV, Schulz-Menger, J, Niendorf, T, Hinojar, R, Ucar, EA, DCruz, D, Sangle, S, Dabir, D, Voigt, T, Gaddum, N, Schaeffter, T, Nagel, E, Puntmann, VO, Sung, YM, Pontone, G, Andreini, D, Bertella, E, Mushtaq, S, Gripari, P, Cortinovis, S, Loguercio, M, Baggiano, A, Conte, E, Pepi, M, El ghannudi, S, Hop, O, Germain, P, Jeung, M-J, De Cesare, A, Roy, C, Gangi, A, Barone-Rochette, G, Pierard, S, Seldrum, S, De Meester de Ravensteen, C, Melchior, J, Maes, F, Pouleur, A-C, Vancraeynest, D, Pasquet, A, Vanoverschelde, J-L, L Gerber, B, Bekele, S, Singh, A, Khan, JN, Nazir, SA, Kanagala, P, McCann, GP, Singh, A, Steadman, CD, Bekele, S, Khan, JN, Nazir, SA, Kanagala, P, McCann, GP, Paelinck, BP, Vandendriessche, T, De Bock, D, De Maeyer, C, Parizel, PM, Christiaan, J, Trauzeddel, RF, Gelsinger, C, Butter, C, Barker, A, Markl, M, Schulz-Menger, J, von Knobelsdorff, F, Florian, A, Schäufele, T, Ludwig, A, Rösch, S, Wenzelburger, I, Yilmaz, A, Sechtem, U, López-Lereu, M.P, Bonanad, C, Monmeneu, J.V, Sanchís, J, Estornell, J, Igual, B, Maceira, A, Chorro, F.J, Focardi, M, Cameli, M, Bennati, E, Massoni, A, Solari, M, Carbone, F, Banchi, B, Mondillo, S, Miia, H, Kirsi, L, Helena, H, Tiina, H, Jyri, L, Pauli, P, Sari, K, Schumm, J, Greulich, S, Grün, S, Ong, P, Klingel, K, Kandolf, R, Sechtem, U, Mahrholdt, H, Raimondi, F, Ou, P, Boudjemline, Y, Bajolle, F, Iserin, F, Bonnet, D, Collins, J, Kalisz, K, Benefield, B, Sarnari, R, Katz, D, Bi, X, Cordts, M, Guetter, C, Jolly, M-P, Freed, B, Flukiger, J, Kansal, P, Lee, D, Shah, S, Markl, M, Carr, J, Sokolowska, B, Miszalski-Jamka, T, Szczeklik, W, Karwat, K, Miszalski-Jamka, K, Belzak, K, Mazur, W, Kereiakes, DJ, Jazwiec, P, Musial, J, Silva, G, Almeida, AG, Resende, C, Marques, JS, Silva, D, David, C, Amaro, C, Costa, P, Silva, JAP, Diogo, AN, Tsokolov, AV, Senchilo, VG, Vertelkin, AV, Hoffmann, P, Mykjåland, G, Wangberg, H, Tønnessen, T, Sjaastad, I, Nordsletten, L, Hjørnholm, U, Løset, A, Rostrup, M, Meloni, A, Gulino, L, Keilberg, P, Palazzi, G, Maddaloni, D, Ascioti, C, Missere, M, Salvatori, C, Positano, V, Lombardi, M, Pepe, A, Meloni, A, Filosa, A, Gulino, L, Pulini, S, Salvatori, C, Chiodi, E, Ascioti, C, Keilberg, P, Positano, V, Lombardi, M, Pepe, A, Meloni, A, Gulino, L, Pietrapertosa, A, Izzi, G, De Marchi, D, Valeri, G, Preziosi, P, Positano, V, Lombardi, M, Pepe, A, Meloni, A, Ruffo, GB, Keilberg, P, Gulino, L, Gerardi, C, Sallustio, G, Tudisca, C, Positano, V, Lombardi, M, Pepe, A, Greulich, S, Backes, M, Schumm, J, Grün, S, Sechtem, U, Mahrholdt, H, Dorniak, K, MSc, AS, Szurowska, E, Fijalkowski, M, Rawicz-Zegrzda, D, Dudziak, M, Raczak, G, Hamdan, A, Baker, FA, Klein, M, Di Segni, E, Goitein, O, Fibisch, G, Konen, E, Müller-Bierl, B, Tanaka, K, Buls, N, Fierens, Y, van Cauteren, T, Willekens, I, van Laere, S, Luypaert, R, de Mey, J, Muzzarelli, S, Faragasso, E, Pedrazzini, G, Sürder, D, Pasotti, E, Moccetti, T, Faletra, F, Qayyum, AA, Hasbak, P, Larsson, HB, Mathiasen, AB, Vejlstrup, NG, Kjaer, A, Kastrup, J, Moschetti, K, Favre, D, Pinget, C, Pilz, G, Petersen, S, Wagner, A, Wasserfallen, JB, Schwitter, J, Ghosh Dastidar, A, Cengarle, M, McAlindon, E, Augustine, D, Nightingale, AK, Bucciarelli-Ducci, C, Dandekar, VK, Ertel, AW, Dickens, C, Gonzalez, RC, Farzaneh-Far, A, Ripley, DP, Higgins, D, McDiarmid, AK, Bainbridge, GJ, Uddin, A, Kidambi, A, Herzog, B, Greenwood, JP, Plein, S, Khanji, M, Newton, T, Westwood, M, Sekhri, N, and Petersen, SE

Abstract

Background-Aims: Early post-infarction pericardial injury is a common finding but its diagnosis remains elusive. Though C-reactive protein (CRP) is considered a marker of myocardial damage, reflecting myocardial inflammation at the infarcted area, we sought to assess the relationship between CRP and pericardial injury depicted by cardiovascular magnetic resonance (CMR) imaging in patients with ST elevation myocardial infarction (MI). Methods and results: 181 MI patients (84% male) were studied with CMR in the first week and at 4 months post-infarction to assess infarct characteristics, left ventricular volumes/function and pericardial injury. The latter was defined as pericardial fluid >4mm and/or enhancement on late gadolinium enhancement CMR. The CRP-value at day 2 (according to previous literature) was used for correlation with CMR and clinical parameters. Pericardial injury was noted in 87 patients, i.e. effusion (n = 30), inflammation (n = 46), both (n = 11). Patients with pericardial injury had significantly higher peak values of cardiac biomarkers (p<0.001) and higher peak CRP-values than patients with normal pericardium (median 13 vs 43 mg/dl, p<0.001). A strong correlation was found between peak CRP-values and a) left venticular ejection fraction and infarct size both at 1 week and 4 months, b) myocardial hemorrhage, microvascular obstruction (MVO) and pericardial injury at 1 week, c) cardiac biomarkers values and time to PCI. However in a multiple regression model only pericardial injury (p = 0.003) and less importantly time to PCI (p = 0.022) were the independent predictors of CRP values. Conclusion: Pericardial damage described by cardiac MRI occurs often after acute ST elevation MI. CRP-values at the acute phase of MI reflect not only inflammation at the infarcted area but even more the inflammation of the surrounding pericardial tissue. Table 1 Comparison of baseline clinical and biochemical parameters of patients with or without evidence of early post-infarct pericardial damage on CMR Normal Group (n = 94)Pericardial injury group (n = 87)p-valueAgem, years59±1160±120.48Male, n(%)83 (88)69 (79)0.10Diabets, n(%)12 (13)9 (10)0.61Smoker, n(%)52 (55)44 (51)0.52Hyperlipidemia, n(%)56 (60)55 (63)0.62BSA m22.0 ± 0.22.0 ± 0.20.20Time to PCI, min195 (155 − 274)223 (160 − 335)0.20Troponin I, μ/l44 (19 − 92)90 (44 − 149)>0.001CK-MB, U/L128 (77 − 216)250 (143 − 443)>0.001CRP, mg/dL13 (7 − 28)43 (16 − 96)>0.001Day of peak CRP2 (1 − 3)2 (1 − 3)0.39 Table 2 Significant correlations between CRP Values and corresponding CMR measurements, cardic biomarkers and clinical related parameters VariblesSpearmanscorrelations rp-valueCMR parameters 1 weekLV EF−0.28>0,001Infractsize(%ofLV)0.40>0,001Microvasular obstruction0.27>0,001Hemorrhage0.33>0,001Size of area atrisk0.31>0,001Transmurality0.30>0,001Pericaldial damage0.43>0,001CMR parameters 4 monthsLVEF−0.43>0,001Infarctsize(%ofLV)0.46>0,001Cardiac BiomarkersPeak TnI0.34>0,001Peak CK-MB0.32>0,001OtherTime to PCI0,1820,007

Published
2013
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14. Post-myocarditis autonomic imbalance: A possible cause of arrhythmias?

Author

giovanni fazio, Novo G, Sutera L, Amoroso G, Di Gesaro G, D'Angelo L, Visconti C, Pitruzzella V, Novo S, FAZIO G, NOVO G, SUTERA L, AMOROSO G, DI GESARO G, DANGELO L, VISCONTI C, PITRUZZELLA V, and NOVO S

Subjects
myocarditis, autonomic imbalance, arrhythmia, Amiodarone, C reactive protein, fibrinogenmetoprololvirus, RNA, Settore MED/11 - Malattie Dell'Apparato Cardiovascolare
Published
2008

15. The degree of porosity influences the release of growth factors by healing polytetrafluoroethylene (PTFE) grafts

Author

Bruto Randone, Anna L. Patrizi, Alessandra Cucina, Sandro Lepidi, Antonio V. Sterpetti, Roberta Palumbo, Antonino Cavallaro, Francesco Stipa, Luciana Santoro D'Angelo, Lepidi, S, Sterpetti, Av, Cucina, A, Randone, B, Palumbo, R, Patrizi, Al, Stipa, F, Dangelo, L, and Cavallaro, A

Subjects
Male, medicine.medical_specialty, Becaplermin, Mitosis, Enzyme-Linked Immunosorbent Assay, chemistry.chemical_compound, Blood vessel prosthesis, medicine.artery, Culture Techniques, medicine, Animals, Animal study, Aorta, Abdominal, Porosity, Culture Media, Conditioned, Fibroblast Growth Factor 2, Platelet-Derived Growth Factor, Proto-Oncogene Proteins c-sis, Rats, Rats, Inbred Lew, Blood Vessel Prosthesis, Polytetrafluoroethylene, Medicine(all), Aorta, biology, business.industry, Outcome measures, Ptfe graft, Surgery, surgical procedures, operative, chemistry, biology.protein, Cardiology and Cardiovascular Medicine, business, Platelet-derived growth factor receptor, Biomedical engineering
Abstract

Objectives: The aim of this study was to determine the influence of the degree of porosity on the release of growth factors (PDGF AA, PDGF BB, bFGF) by healing PTFE grafts. Design and setting: Laboratory animal study. Materials: 1 cm long segments of non-reinforced PTFE grafts (30 microns fibril length, 2 mm internal diameter, 0.39 mm thick) were placed as an abdominal aortic interposition in Lewis rats. Fifteen grafts served as control (Group A; porous grafts); in eight rats (Group B; non porous grafts) the PTFE graft was completely wrapped by a non-porous plastic envelope. Animals were killed 4 weeks after surgery. Outcome measures: The release of PDGF AA, PDGF BB, and bFGF was assessed by Enzyme Linked Immunosorbent Assay (ELISA). Results: The release of PDGF AA, PDGF BB and bFGF was statistically higher in porous grafts. The only histological difference between the two groups was that porous PTFE grafts were invaded by many tufts of capillaries from the surrounding tissue, whereas this phenomenon was absent in non porous PTFE grafts. Conclusions: The degree of porosity influences the release of growth factors by healing PTFE grafts. This fact may have implication in the endothelisation of PTFE grafts and in myointimal hyperplasia formation as well.

Published
1996

16. Progression and regression of myointimal hyperplasia in experimental vein grafts depends on platelet-derived growth factor and basic fibroblastic growth factor production

Author

Alessandra Cucina, Sandro Lepidi, Antonino Cavallaro, Luciana Santoro D'Angelo, Francesco Stipa, Antonio V. Sterpetti, Sergio Stipa, Cesare Aromatario, Bruto Randone, Dario Travi, Sterpetti, Av, Cucina, A, Lepidi, S, Randone, B, Stipa, F, Aromatario, C, Travi, D, Dangelo, L, Cavallaro, A, and Stipa, S

Subjects
Male, Pathology, Platelet-derived growth factor, Vena Cava, medicine.medical_treatment, Remission, Spontaneous, Muscle, Smooth, Vascular, Mice, chemistry.chemical_compound, Conditioned, Aorta, Abdominal, Aorta, Platelet-Derived Growth Factor, Microscopy, 3T3 Cells, Animals, Culture Media, Conditioned, Disease Progression, Fibroblast Growth Factor 2, Histocytochemistry, Hyperplasia, Microscopy, Electron, Mitogens, Organ Culture Techniques, Rats, Rats, Inbred Lew, Replantation, Tunica Intima, Veins, Vena Cava, Inferior, Inbred Lew, biology, Abdominal aorta, medicine.vein, cardiovascular system, Muscle, Smooth, Cardiology and Cardiovascular Medicine, Platelet-derived growth factor receptor, Inferior, medicine.medical_specialty, Remission, Organ culture, Electron, Inferior vena cava, Vascular, medicine.artery, medicine, Abdominal, business.industry, Spontaneous, Growth factor, medicine.disease, Culture Media, chemistry, biology.protein, Surgery, business
Abstract

Purpose: The factors that lead to myointimal hyperplasia (MH) in arterial vein grafts (AVGs) are unknown. Platelet-derived growth factor (PDGF) and basic fibroblastic growth factor (bFGF) are two powerful mitogens for smooth muscle cells that have been implicated in the genesis of MH. The aim of this study was to analyze the correlation between progression and regression of MH and production of PDGF and bFGF in experimental vein grafts.Materials: In 64 inbred Lewis rats, a 1-cm segment of inferior vena cava was inserted at the level of the abdominal aorta. The segments of inferior vena cava were obtained from syngenic rats. In 48 rats, the AVG was explanted 3 days (n=8), 7 days (n=8), 4 weeks (n=24), and 12 weeks (n=8) after surgery. In 16 rats the vein graft was explanted after being in the arterial system for 4 weeks and was reimplanted as a venous-venous bypass in syngenic Lewis rats. Reimplanted vein grafts (RVGs) were explanted 2 weeks (n=8) and 8 weeks (n=8) later. Grafts were analyzed by light and electron microscopy, morphometry, and histochemistry, and were put in organ culture to assess PDGF and bFGF production and mitogenic activity.Results: We observed MH formation in AVGs and MH regression in RVGs (p

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