Search

Your search keyword '"Yuan, H. S."' showing total 86 results
Start Over Author "Yuan, H. S."
86 results on '"Yuan, H. S."'

3. Global consortium for the classification of fungi and fungus-like taxa

Author

Hyde, K. D., Abdel-Wahab, M. A., Abdollahzadeh, J., Abeywickrama, P. D., Absalan, S., Afshari, N., Ainsworth, A. M., Akulov, O. Y., Aleoshin, V. V., Al-Sadi, A. M., Alvarado, P., Alves, A., Alves-Silva, G., Amalfi, M., Amira, Y., Amuhenage, T. B., Anderson, J. L., Antonín, V., Aouali, S., Aptroot, A., Apurillo, C. C. S., Araújo, J. P.M., Ariyawansa, H. A., Armand, A., Arumugam, E., Asghari, R., Assis, D. M.A., Atienza, V., Avasthi, S., Azevedo, E., Bahkali, A. H., Bakhshi, M., Banihashemi, Z., Bao, D. F., Baral, H. O., Barata, M., Barbosa, F. R., Barbosa, R. N., Barreto, R. W., Baschien, C., Belamesiatseva, D. B., Reuel, M. Bennett, Bera, I., Bezerra, J. D. P., Bezerra, J. L., Bhat, D. J., Bhunjun, C. S., Bianchinotti, M. V., Błaszkowski, J., Blondelle, A., Boekhout, T., Bonito, G., Boonmee, S., Boonyuen, N., Bregant, C., Buchanan, P., Bundhun, D., Burgaud, G., Burgess, T., Buyck, B., Cabarroi-Hernández, M., Cáceres, M. E. S., Caeiro, M. F., Cai, L., Cai, M. F., Calabon, M. S., Calaça, F. J. S., Callalli, M., Camara, M. P. S., Cano-Lira, J. F., Cantillo, T., Cao, B., Carlavilla, J. R., Carvalho, A., Castañeda-Ruiz, R. F., Castlebury, L., Castro-Jauregui, O., Catania, M. D., Cavalcanti, L. H., Cazabonne, J., Cedeño-Sanchez, M. L., Chaharmiri-Dokhaharani, S., Chaiwan, N., Chakraborty, N., Chaverri, P., Cheewangkoon, R., Chen, C., Chen, C. Y., Chen, K. H., Chen, J., Chen, Q., Chen, W. H., Chen, Y. P., Chethana, K. W. T., Coleine, C., Condé, T. O., Corazon-Guivin, M. A., Cortés-Pérez, A., Costa-Rezende, D. H., Courtecuisse, R., Crouch, J. A., Crous, P. W., Cui, B. K., Cui, Y. Y., da Silva, D. K. A., da Silva, G. A., da Silva, I. R., da Silva, R. M. F., da Silva Santos, A. C., Dai, D. Q., Dai, Y. C., Damm, U., Darmostuk, V., Zoha, Daroodi, Das, K., Davoodian, N., Davydov, E. A., Dayarathne, M. C., Decock, C., de Groot, M. D., De Kesel, A., de la Cruz, T. E. E., De Lange, R., Delgado, G., Denchev, C. M., Denchev, T. T., de Oliveira, N. T., de Silva, N. I., de Souza, F. A., Dentinger, B., Devadatha, B., Dianese, J. C., Dima, B., Diniz, A. G., Dissanayake, A. J., Dissanayake, L. S., Doğan, H. H., Doilom, M., Dolatabadi, S., Dong, W., Dong, Z. Y., Dos Santos, L. A., Drechsler-Santos, E. R., Du, T. Y., Dubey, M. K., Dutta, A. K., Egidi, E., Elliott, T. F., Elshahed, M. S., Erdoğdu, M., Ertz, D., Etayo, J., Evans, H. C., Fan, X. L., Fan, Y. G., Fedosova, A. G., Fell, J., Fernandes, I., Firmino, A. L., Fiuza, P. O., Flakus, A., de Souza, C. A.Fragoso, Frisvad, J. C., Fryar, S. C., Gabaldón, T., Gajanayake, A. J., Galindo, L. J., Gannibal, P. B., García, D., García-Sandoval, S. R., Garrido-Benavent, I., Garzoli, L., Gautam, A. K., Ge, Z. W., Gené, D. J., Gentekaki, E., Ghobad-Nejhad, M., Giachini, A. J., Gibertoni, T. B., Góes-Neto, A., Gomdola, D., de Farias, A. R. Gomes, Gorjón, S. P., Goto, B. T., Granados-Montero, M. M., Griffith, G. W., Groenewald, J. Z., Groenewald, M., Grossart, H. P., Gueidan, C., Gunarathne, A., Gunaseelan, S., Gusmão, L. F.P., Gutierrez, A. C., Guzmán-Dávalos, L., Haelewaters, D., Halling, R., Han, Y. F., Hapuarachchi, K. K., Harder, C. B., Harrington, T. C., Hattori, T., He, M. Q., He, S., He, S. H., Healy, R., Herández-Restrepo, M., Heredia, G., Hodge, K. T., Holgado-Rojas, M., Hongsanan, S., Horak, E., Hosoya, T., Houbraken, J., Huang, S. K., Huanraluek, N., Hur, J. S., Hurdeal, V. G., Hustad, V. P., Iotti, M., Iturriaga, T., Jafar, E., Janik, P., Jany, J. L., Jayalal, R. G.U., Jayasiri, S. C., Jayawardena, R. S., Jeewon, R., Jerônimo, G. H., Jesus, A. L., Jin, J., Johnston, P. R., Jones, E. B.G., Joshi, Y., Justo, A., Kaishian, P., Kakishima, M., Kaliyaperumal, M., Kang, G. P., Kang, J. C., Karakehian, J. M., Karimi, O., Karpov, S. A., Karunarathna, S. C., Kaufmann, M., Kemler, M., Kezo, K., Khyaju, S., Kirchmair, M., Kirk, P. M., Kitaura, M. J., Klawonn, I., Kolarik, M., Kong, A., Kuhar, F., Kukwa, M., Kumar, S., Kušan, I., Lado, C., Larsson, K. H., Latha, K. P.D., Lee, H. B., Leonardi, M., Leontyev, D. L., Lestari, A. S., Li, C. J.Y., Li, D. W., Li, H. Y., Li, L., Li, Q. R., Li, W. L., Li, Y., Li, Y. C., Liao, C. F., Liimatainen, K., Lim, Y. W., Lin, C. G., Linaldeddu, B. T., Linde, C. C., Linn, M. M., Liu, F., Liu, J. K., Liu, N. G., Liu, S., Liu, X. F., Liu, X. Z., Liu, Z. B., Lu, L., Lu, Y. Z., Luangharn, T., Luangsa-ard, J. J., Lumbsch, H. T., Lumyong, S., Luo, L., Luo, M., Luo, Z. L., Ma, J., Machado, A. R., Madagammana, A. D., Madrid, H., Magurno, F., Magyar, D., Mahadevan, N., Maharachchikumbura, S. S.N., Maimaiti, Y., Malosso, E., Manamgoda, D. S., Manawasinghe, I. S., Mapook, A., Marasinghe, D. S., Mardones, M., Marin-Felix, Y., Márquez, R., Masigol, H., Matočec, N., May, T. W., McKenzie, E. H.C., Meiras-Ottoni, A., Melo, R. F.R., Mendes-Alvarenga, R. L., Mendieta, S., Meng, Q. F., Menkis, A., Menolli, N., Mešić, A., Calvo, J. G.Meza, Mikhailov, K. V., Miller, S. L., Moncada, B., Moncalvo, J. M., Monteiro, J. S., Monteiro, M., Mora-Montes, H. M., Moreau, P. A., Mueller, G. M., Mukhopadyay, S., Murugadoss, R., Nagy, L. G., Najafiniya, M., Nanayakkara, C. M., Nascimento, C. C., Nei, Y., Neves, M. A., Neuhauser, S., Niego, A. G.T., Nilsson, R. H., Niskanen, T., Niveiro, N., Noorabadi, M. T., Noordeloos, M. E., Norphanphoun, C., Otaño, N. B.Nuñez, O’Donnell, R. P., Oehl, F., Olariaga, I., Orlando, O. P., Pang, K. L., Papp, V., Pawłowska, J., Peintner, U., Pem, D., Pereira, O. L., Perera, R. H., Perez-Moreno, J., Perez-Ortega, S., Péter, G., Phillips, A. J.L., Phonemany, M., Phukhamsakda, C., Phutthacharoen, K., Piepenbring, M., Pires-Zottarelli, C. L.A., Poinar, G., Pošta, A., Prieto, M., Promputtha, I., Quandt, C. A., Radek, R., Rahnama, K., Raj, K. N.A., Rajeshkumar, K. C., Rämä, T., Rambold, G., Ramírez-Cruz, V., Rasconi, S., Rathnayaka, A. R., Raza, M., Ren, G. C., Robledo, G. L., Rodriguez-Flakus, P., Ronikier, A., Rossi, W., Ryberg, M., Ryvarden, L. R., Salvador-Montoya, C. A., Samant, B., Samarakoon, B. C., Samarakoon, M. C., Sánchez-Castro, I., Sánchez-García, M., Sandoval-Denis, M., Santamaria, B., Santiago, A. L.C.M.A., Sarma, V. V., Savchenko, A., Savchenko, K., Saxena, R. K., Scholler, M., Schoutteten, N., Seifollahi, E., Selbmann, L., Selcuk, F., Senanayake, I. C., Shabashova, T. G., Shen, H. W., Shen, Y. M., Silva-Filho, A. G.S., Simmons, D. R., Singh, R., Sir, E. B., Song, C. G., Souza-Motta, C. M., Sruthi, O. P., Stadler, M., Stchigel, A. M., Stemler, J., Stephenson, S. L., Strassert, J. F.H., Su, H. L., Su, L., Suetrong, S., Sulistyo, B., Sun, Y. R., Svantesson, S., Sysouphanthong, P., Takamatsu, S., Tan, T. H., Tanaka, K., Tang, A. M.C., Tang, X., Tanney, J. B., Tavakol, N. M., Taylor, J. E., Taylor, P. W.J., Tedersoo, L., Tennakoon, D. S., Thamodini, G. K., Thines, M., Thiyagaraja, V., Thongklang, N., Tiago, P. V., Tian, Q., Tian, W. H., Tibell, L., Tibell, S., Tibpromma, S., Tkalčec, Z., Tomšovský, M., Toome-Heller, M., Torruella, G., Tsurykau, A., Udayanga, D., Ulukapi, M., Untereiner, W. A., Uzunov, B. A., Valle, L. G., Van Caenegem, W., Van den Wyngaert, S., Van Vooren, N., Velez, P., Verma, R. K., Vieira, L. C., Vieira, W. A.S., Vizzini, A., Walker, A., Walker, A. K., Wanasinghe, D. N., Wang, C. G., Wang, K., Wang, S. X., Wang, X. Y., Wang, Y., Wannasawang, N., Wartchow, F., Wei, D. P., Wei, X. L., White, J. F., Wijayawardene, N. N., Wijesinghe, S. N., Wijesundara, D. S.A., Wisitrassameewong, K., Worthy, F. R., Wu, F., Wu, G., Wu, H. X., Wu, N., Wu, W. P., Wurzbacher, C., Xiao, Y. P., Xiong, Y. R., Xu, B., Xu, L. J., Xu, R., Xu, T. M., Yakovchenko, L., Yan, J. Y., Yang, H. D., Yang, J., Yang, Z. L., Yang, Y. H., Yapa, N., Yasanthika, E., Youssef, N. H., Yu, F. M., Yu, Q., Yu, X. D., Yu, Y. X., Yu, Z. F., Yuan, H. S., Yuan, Y., Yurkov, A., Zafari, D., Zamora, J. C., Zare, R., Zeng, M., Zeng, N. K., Zeng, X. Y., Zhang, F., Zhang, H., Zhang, J. F., Zhang, J. Y., Zhang, Q. Y., Zhang, S. N., Zhang, W., Zhang, Y., Zhao, C. L., Zhao, H., Zhao, Q., Zhao, R. L., Zhou, L. W., Zhou, M., Zhurbenko, M. P., Zin, H. H., Zucconi, L., Hyde, K. D., Abdel-Wahab, M. A., Abdollahzadeh, J., Abeywickrama, P. D., Absalan, S., Afshari, N., Ainsworth, A. M., Akulov, O. Y., Aleoshin, V. V., Al-Sadi, A. M., Alvarado, P., Alves, A., Alves-Silva, G., Amalfi, M., Amira, Y., Amuhenage, T. B., Anderson, J. L., Antonín, V., Aouali, S., Aptroot, A., Apurillo, C. C. S., Araújo, J. P.M., Ariyawansa, H. A., Armand, A., Arumugam, E., Asghari, R., Assis, D. M.A., Atienza, V., Avasthi, S., Azevedo, E., Bahkali, A. H., Bakhshi, M., Banihashemi, Z., Bao, D. F., Baral, H. O., Barata, M., Barbosa, F. R., Barbosa, R. N., Barreto, R. W., Baschien, C., Belamesiatseva, D. B., Reuel, M. Bennett, Bera, I., Bezerra, J. D. P., Bezerra, J. L., Bhat, D. J., Bhunjun, C. S., Bianchinotti, M. V., Błaszkowski, J., Blondelle, A., Boekhout, T., Bonito, G., Boonmee, S., Boonyuen, N., Bregant, C., Buchanan, P., Bundhun, D., Burgaud, G., Burgess, T., Buyck, B., Cabarroi-Hernández, M., Cáceres, M. E. S., Caeiro, M. F., Cai, L., Cai, M. F., Calabon, M. S., Calaça, F. J. S., Callalli, M., Camara, M. P. S., Cano-Lira, J. F., Cantillo, T., Cao, B., Carlavilla, J. R., Carvalho, A., Castañeda-Ruiz, R. F., Castlebury, L., Castro-Jauregui, O., Catania, M. D., Cavalcanti, L. H., Cazabonne, J., Cedeño-Sanchez, M. L., Chaharmiri-Dokhaharani, S., Chaiwan, N., Chakraborty, N., Chaverri, P., Cheewangkoon, R., Chen, C., Chen, C. Y., Chen, K. H., Chen, J., Chen, Q., Chen, W. H., Chen, Y. P., Chethana, K. W. T., Coleine, C., Condé, T. O., Corazon-Guivin, M. A., Cortés-Pérez, A., Costa-Rezende, D. H., Courtecuisse, R., Crouch, J. A., Crous, P. W., Cui, B. K., Cui, Y. Y., da Silva, D. K. A., da Silva, G. A., da Silva, I. R., da Silva, R. M. F., da Silva Santos, A. C., Dai, D. Q., Dai, Y. C., Damm, U., Darmostuk, V., Zoha, Daroodi, Das, K., Davoodian, N., Davydov, E. A., Dayarathne, M. C., Decock, C., de Groot, M. D., De Kesel, A., de la Cruz, T. E. E., De Lange, R., Delgado, G., Denchev, C. M., Denchev, T. T., de Oliveira, N. T., de Silva, N. I., de Souza, F. A., Dentinger, B., Devadatha, B., Dianese, J. C., Dima, B., Diniz, A. G., Dissanayake, A. J., Dissanayake, L. S., Doğan, H. H., Doilom, M., Dolatabadi, S., Dong, W., Dong, Z. Y., Dos Santos, L. A., Drechsler-Santos, E. R., Du, T. Y., Dubey, M. K., Dutta, A. K., Egidi, E., Elliott, T. F., Elshahed, M. S., Erdoğdu, M., Ertz, D., Etayo, J., Evans, H. C., Fan, X. L., Fan, Y. G., Fedosova, A. G., Fell, J., Fernandes, I., Firmino, A. L., Fiuza, P. O., Flakus, A., de Souza, C. A.Fragoso, Frisvad, J. C., Fryar, S. C., Gabaldón, T., Gajanayake, A. J., Galindo, L. J., Gannibal, P. B., García, D., García-Sandoval, S. R., Garrido-Benavent, I., Garzoli, L., Gautam, A. K., Ge, Z. W., Gené, D. J., Gentekaki, E., Ghobad-Nejhad, M., Giachini, A. J., Gibertoni, T. B., Góes-Neto, A., Gomdola, D., de Farias, A. R. Gomes, Gorjón, S. P., Goto, B. T., Granados-Montero, M. M., Griffith, G. W., Groenewald, J. Z., Groenewald, M., Grossart, H. P., Gueidan, C., Gunarathne, A., Gunaseelan, S., Gusmão, L. F.P., Gutierrez, A. C., Guzmán-Dávalos, L., Haelewaters, D., Halling, R., Han, Y. F., Hapuarachchi, K. K., Harder, C. B., Harrington, T. C., Hattori, T., He, M. Q., He, S., He, S. H., Healy, R., Herández-Restrepo, M., Heredia, G., Hodge, K. T., Holgado-Rojas, M., Hongsanan, S., Horak, E., Hosoya, T., Houbraken, J., Huang, S. K., Huanraluek, N., Hur, J. S., Hurdeal, V. G., Hustad, V. P., Iotti, M., Iturriaga, T., Jafar, E., Janik, P., Jany, J. L., Jayalal, R. G.U., Jayasiri, S. C., Jayawardena, R. S., Jeewon, R., Jerônimo, G. H., Jesus, A. L., Jin, J., Johnston, P. R., Jones, E. B.G., Joshi, Y., Justo, A., Kaishian, P., Kakishima, M., Kaliyaperumal, M., Kang, G. P., Kang, J. C., Karakehian, J. M., Karimi, O., Karpov, S. A., Karunarathna, S. C., Kaufmann, M., Kemler, M., Kezo, K., Khyaju, S., Kirchmair, M., Kirk, P. M., Kitaura, M. J., Klawonn, I., Kolarik, M., Kong, A., Kuhar, F., Kukwa, M., Kumar, S., Kušan, I., Lado, C., Larsson, K. H., Latha, K. P.D., Lee, H. B., Leonardi, M., Leontyev, D. L., Lestari, A. S., Li, C. J.Y., Li, D. W., Li, H. Y., Li, L., Li, Q. R., Li, W. L., Li, Y., Li, Y. C., Liao, C. F., Liimatainen, K., Lim, Y. W., Lin, C. G., Linaldeddu, B. T., Linde, C. C., Linn, M. M., Liu, F., Liu, J. K., Liu, N. G., Liu, S., Liu, X. F., Liu, X. Z., Liu, Z. B., Lu, L., Lu, Y. Z., Luangharn, T., Luangsa-ard, J. J., Lumbsch, H. T., Lumyong, S., Luo, L., Luo, M., Luo, Z. L., Ma, J., Machado, A. R., Madagammana, A. D., Madrid, H., Magurno, F., Magyar, D., Mahadevan, N., Maharachchikumbura, S. S.N., Maimaiti, Y., Malosso, E., Manamgoda, D. S., Manawasinghe, I. S., Mapook, A., Marasinghe, D. S., Mardones, M., Marin-Felix, Y., Márquez, R., Masigol, H., Matočec, N., May, T. W., McKenzie, E. H.C., Meiras-Ottoni, A., Melo, R. F.R., Mendes-Alvarenga, R. L., Mendieta, S., Meng, Q. F., Menkis, A., Menolli, N., Mešić, A., Calvo, J. G.Meza, Mikhailov, K. V., Miller, S. L., Moncada, B., Moncalvo, J. M., Monteiro, J. S., Monteiro, M., Mora-Montes, H. M., Moreau, P. A., Mueller, G. M., Mukhopadyay, S., Murugadoss, R., Nagy, L. G., Najafiniya, M., Nanayakkara, C. M., Nascimento, C. C., Nei, Y., Neves, M. A., Neuhauser, S., Niego, A. G.T., Nilsson, R. H., Niskanen, T., Niveiro, N., Noorabadi, M. T., Noordeloos, M. E., Norphanphoun, C., Otaño, N. B.Nuñez, O’Donnell, R. P., Oehl, F., Olariaga, I., Orlando, O. P., Pang, K. L., Papp, V., Pawłowska, J., Peintner, U., Pem, D., Pereira, O. L., Perera, R. H., Perez-Moreno, J., Perez-Ortega, S., Péter, G., Phillips, A. J.L., Phonemany, M., Phukhamsakda, C., Phutthacharoen, K., Piepenbring, M., Pires-Zottarelli, C. L.A., Poinar, G., Pošta, A., Prieto, M., Promputtha, I., Quandt, C. A., Radek, R., Rahnama, K., Raj, K. N.A., Rajeshkumar, K. C., Rämä, T., Rambold, G., Ramírez-Cruz, V., Rasconi, S., Rathnayaka, A. R., Raza, M., Ren, G. C., Robledo, G. L., Rodriguez-Flakus, P., Ronikier, A., Rossi, W., Ryberg, M., Ryvarden, L. R., Salvador-Montoya, C. A., Samant, B., Samarakoon, B. C., Samarakoon, M. C., Sánchez-Castro, I., Sánchez-García, M., Sandoval-Denis, M., Santamaria, B., Santiago, A. L.C.M.A., Sarma, V. V., Savchenko, A., Savchenko, K., Saxena, R. K., Scholler, M., Schoutteten, N., Seifollahi, E., Selbmann, L., Selcuk, F., Senanayake, I. C., Shabashova, T. G., Shen, H. W., Shen, Y. M., Silva-Filho, A. G.S., Simmons, D. R., Singh, R., Sir, E. B., Song, C. G., Souza-Motta, C. M., Sruthi, O. P., Stadler, M., Stchigel, A. M., Stemler, J., Stephenson, S. L., Strassert, J. F.H., Su, H. L., Su, L., Suetrong, S., Sulistyo, B., Sun, Y. R., Svantesson, S., Sysouphanthong, P., Takamatsu, S., Tan, T. H., Tanaka, K., Tang, A. M.C., Tang, X., Tanney, J. B., Tavakol, N. M., Taylor, J. E., Taylor, P. W.J., Tedersoo, L., Tennakoon, D. S., Thamodini, G. K., Thines, M., Thiyagaraja, V., Thongklang, N., Tiago, P. V., Tian, Q., Tian, W. H., Tibell, L., Tibell, S., Tibpromma, S., Tkalčec, Z., Tomšovský, M., Toome-Heller, M., Torruella, G., Tsurykau, A., Udayanga, D., Ulukapi, M., Untereiner, W. A., Uzunov, B. A., Valle, L. G., Van Caenegem, W., Van den Wyngaert, S., Van Vooren, N., Velez, P., Verma, R. K., Vieira, L. C., Vieira, W. A.S., Vizzini, A., Walker, A., Walker, A. K., Wanasinghe, D. N., Wang, C. G., Wang, K., Wang, S. X., Wang, X. Y., Wang, Y., Wannasawang, N., Wartchow, F., Wei, D. P., Wei, X. L., White, J. F., Wijayawardene, N. N., Wijesinghe, S. N., Wijesundara, D. S.A., Wisitrassameewong, K., Worthy, F. R., Wu, F., Wu, G., Wu, H. X., Wu, N., Wu, W. P., Wurzbacher, C., Xiao, Y. P., Xiong, Y. R., Xu, B., Xu, L. J., Xu, R., Xu, T. M., Yakovchenko, L., Yan, J. Y., Yang, H. D., Yang, J., Yang, Z. L., Yang, Y. H., Yapa, N., Yasanthika, E., Youssef, N. H., Yu, F. M., Yu, Q., Yu, X. D., Yu, Y. X., Yu, Z. F., Yuan, H. S., Yuan, Y., Yurkov, A., Zafari, D., Zamora, J. C., Zare, R., Zeng, M., Zeng, N. K., Zeng, X. Y., Zhang, F., Zhang, H., Zhang, J. F., Zhang, J. Y., Zhang, Q. Y., Zhang, S. N., Zhang, W., Zhang, Y., Zhao, C. L., Zhao, H., Zhao, Q., Zhao, R. L., Zhou, L. W., Zhou, M., Zhurbenko, M. P., Zin, H. H., and Zucconi, L.

Abstract

The Global Consortium for the Classification of Fungi and fungus-like taxa is an international initiative of more than 550 mycologists to develop an electronic structure for the classification of these organisms. The members of the Consortium originate from 55 countries/regions worldwide, from a wide range of disciplines, and include senior, mid-career and early-career mycologists and plant pathologists. The Consortium will publish a biannual update of the Outline of Fungi and fungus-like taxa, to act as an international scheme for other scientists. Notes on all newly published taxa at or above the level of species will be prepared and published online on the Outline of Fungi website (https://www.outlineoffungi.org/), and these will be finally published in the biannual edition of the Outline of Fungi and fungus-like taxa. Comments on recent important taxonomic opinions on controversial topics will be included in the biannual outline. For example, 'to promote a more stable taxonomy in Fusarium given the divergences over its generic delimitation', or 'are there too many genera in the Boletales?' and even more importantly, 'what should be done with the tremendously diverse 'dark fungal taxa?' There are undeniable differences in mycologists' perceptions and opinions regarding species classification as well as the establishment of new species. Given the pluralistic nature of fungal taxonomy and its implications for species concepts and the nature of species, this consortium aims to provide a platform to better refine and stabilise fungal classification, taking into consideration views from different parties. In the future, a confidential voting system will be set up to gauge the opinions of all mycologists in the Consortium on important topics. The results of such surveys will be presented to the International Commission on the Taxonomy of Fungi (ICTF) and the Nomenclature Committee

Published
2023

4. Fungal diversity notes 1512-1610: taxonomic and phylogenetic contributions on genera and species of fungal taxa

Author

Jayawardena, R. S., Hyde, K.D., Wang, Shanshan, Sun, Y.-R., Suwannarach, N., Sysouphanthong, P., Abdel-Wahab, M.A., Abdel-Aziz, F.A., Abeywickrama, P.D., Abreu, V.P., Armand, A., Wijesinghe, S.N., Yang, H., Yang, Y., Yuan, H.-S., Zhang, H., Zhang, J., Balasuriya, A., Bhunjun, C.S., Bulgakov, T.S., Cai, L., Doilom, M., Camporesi, E., Chomnunti, P., Deepika, Y.S., Duan, W.-J., Han, S.-L., Huanraluek, N., Jones, E. B. Gareth, Lakshmidevi, N., Li, Y., Lumyong, S., Luo, Z.-L., Khuna, S., Aptroot, A., Kumla, J., Manawasinghe, I.S., Mapook, A., Bao, D.-F., Begerow, D., Bellanger, J.-M., Bezerra, J.D.P., Bundhun, D., Calabon, M.S., Cao, T., Cantillo, T., Carvalho, J.L.V.R., Chaiwan, N., Chen, C.-C., Courtecuisse, R., Cui, B.-K., Damm, U., Denchev, C.M., Denchev, T.T., Deng, C.Y., Devadatha, B., de, Silva, N.I., dos, Santos, L.A., Dubey, N.K., Dumez, S., Ferdinandez, H.S., Firmino, A.L., Gafforov, Y., Gajanayake, A.J., Gomdola, D., Gunaseelan, S., Shucheng-He, Htet, Z.H., Kaliyaperumal, M., Kemler, M., Kezo, K., Kularathnage, N.D., Leonardi, M., Li, J.-P., Liao, C., Liu, S., Loizides, M., Luangharn, T., Ma, J., Madrid, H., Mahadevakumar, S., Maharachchikumbura, S.S.N., Manamgoda, D.S., Martín, María P., Mekala, N., Moreau, Pierre-Arthur, Mu, Y.-H., Pahoua, P., Pem, D., Pereira, O.L., Phonrob, W., Phukhamsakda, C., Raza, M., Ren, G.-C., Rinaldi, A.C., Rossi, W., Samarakoon, B.C., Samarakoon, M.C., Sarma, V.V., Senanayake, I.C., Singh, A., Souza, M.F., Souza-Motta, C.M., Spielmann, A.A., Su, W., Tang, X., Tian, X.G., Thambugala, K.M., Thongklang, N., Tennakoon, D.S., Wannathes, N., Wei, D.P., Welti, S., Jayawardena, R. S., Hyde, K.D., Wang, Shanshan, Sun, Y.-R., Suwannarach, N., Sysouphanthong, P., Abdel-Wahab, M.A., Abdel-Aziz, F.A., Abeywickrama, P.D., Abreu, V.P., Armand, A., Wijesinghe, S.N., Yang, H., Yang, Y., Yuan, H.-S., Zhang, H., Zhang, J., Balasuriya, A., Bhunjun, C.S., Bulgakov, T.S., Cai, L., Doilom, M., Camporesi, E., Chomnunti, P., Deepika, Y.S., Duan, W.-J., Han, S.-L., Huanraluek, N., Jones, E. B. Gareth, Lakshmidevi, N., Li, Y., Lumyong, S., Luo, Z.-L., Khuna, S., Aptroot, A., Kumla, J., Manawasinghe, I.S., Mapook, A., Bao, D.-F., Begerow, D., Bellanger, J.-M., Bezerra, J.D.P., Bundhun, D., Calabon, M.S., Cao, T., Cantillo, T., Carvalho, J.L.V.R., Chaiwan, N., Chen, C.-C., Courtecuisse, R., Cui, B.-K., Damm, U., Denchev, C.M., Denchev, T.T., Deng, C.Y., Devadatha, B., de, Silva, N.I., dos, Santos, L.A., Dubey, N.K., Dumez, S., Ferdinandez, H.S., Firmino, A.L., Gafforov, Y., Gajanayake, A.J., Gomdola, D., Gunaseelan, S., Shucheng-He, Htet, Z.H., Kaliyaperumal, M., Kemler, M., Kezo, K., Kularathnage, N.D., Leonardi, M., Li, J.-P., Liao, C., Liu, S., Loizides, M., Luangharn, T., Ma, J., Madrid, H., Mahadevakumar, S., Maharachchikumbura, S.S.N., Manamgoda, D.S., Martín, María P., Mekala, N., Moreau, Pierre-Arthur, Mu, Y.-H., Pahoua, P., Pem, D., Pereira, O.L., Phonrob, W., Phukhamsakda, C., Raza, M., Ren, G.-C., Rinaldi, A.C., Rossi, W., Samarakoon, B.C., Samarakoon, M.C., Sarma, V.V., Senanayake, I.C., Singh, A., Souza, M.F., Souza-Motta, C.M., Spielmann, A.A., Su, W., Tang, X., Tian, X.G., Thambugala, K.M., Thongklang, N., Tennakoon, D.S., Wannathes, N., Wei, D.P., and Welti, S.

Abstract

This article is the 14th in the Fungal Diversity Notes series, wherein we report 98 taxa distributed in two phyla, seven classes, 26 orders and 50 families which are described and illustrated. Taxa in this study were collected from Australia, Brazil, Burkina Faso, Chile, China, Cyprus, Egypt, France, French Guiana, India, Indonesia, Italy, Laos, Mexico, Russia, Sri Lanka, Thailand, and Vietnam. There are 59 new taxa, 39 new hosts and new geographical distributions with one new combination. The 59 new species comprise Angustimassarina kunmingense, Asterina lopi, Asterina brigadeirensis, Bartalinia bidenticola, Bartalinia caryotae, Buellia pruinocalcarea, Coltricia insularis, Colletotrichum flexuosum, Colletotrichum thasutense, Coniochaeta caraganae, Coniothyrium yuccicola, Dematipyriforma aquatic, Dematipyriforma globispora, Dematipyriforma nilotica, Distoseptispora bambusicola, Fulvifomes jawadhuvensis, Fulvifomes malaiyanurensis, Fulvifomes thiruvannamalaiensis, Fusarium purpurea, Gerronema atrovirens, Gerronema flavum, Gerronema keralense, Gerronema kuruvense, Grammothele taiwanensis, Hongkongmyces changchunensis, Hypoxylon inaequale, Kirschsteiniothelia acutisporum, Kirschsteiniothelia crustaceum, Kirschsteiniothelia extensum, Kirschsteiniothelia septemseptatum, Kirschsteiniothelia spatiosum, Lecanora immersocalcarea, Lepiota subthailandica, Lindgomyces guizhouensis, Marthe asmius pallidoaurantiacus, Marasmius tangerinus, Neovaginatispora mangiferae, Pararamichloridium aquisubtropicum, Pestalotiopsis piraubensis, Phacidium chinaum, Phaeoisaria goiasensis, Phaeoseptum thailandicum, Pleurothecium aquisubtropicum, Pseudocercospora vernoniae, Pyrenophora verruculosa, Rhachomyces cruralis, Rhachomyces hyperommae, Rhachomyces magrinii, Rhachomyces platyprosophi, Rhizomarasmius cunninghamietorum, Skeletocutis cangshanensis, Skeletocutis subchrysella, Sporisorium anadelphiae-leptocomae, Tetraploa dashaoensis, Tomentella exiguelata, Tomentella fuscoaraneosa, Tricholomopsi

Published
2022

5. [CT spectral curve in differentiating spinal tumor metastasis and infections]

Author

Yuan, Y., Ning Lang, and Yuan, H. S.

Subjects
Diagnosis, Differential, 论著, Spinal Neoplasms, ROC Curve, Humans, Spinal Cord Neoplasms, Middle Aged, Tomography, X-Ray Computed, Sensitivity and Specificity
Abstract

OBJECTIVE: To evaluate the value of CT spectral curve in differentiating spinal tumor metastasis (STM) from spinal infections (SI). METHODS: In the study, 29 STM and 18 SI patients proved pathologically and clinically were examined by dual energy spectral CT (DESCT). The monochromatic images and CT spectral curves were generated automatically by GSI Viewer software. The attenuation values at different energy levels (40-140 keV, every 10 keV), the attenuation values of the lesions on the conventional polychromatic CT images and the gradients of the curve were calculated and compared between STM and SI. RESULTS: The median age of STM and SI (58 years vs. 64 years) were not significantly different (U=171, P=0.4). The attenuation values of STM at 40-100 keV were 281.79 (143.67, 446.19) HU, 199.68 (100.04, 321.49) HU, 151.54 (81.47, 243.49) HU, (122.64±27.72) HU, (99.90±23.88) HU, (85.82±21.61) HU, and (75.94±20.27) HU, respectively, which were significantly higher than SI: 185.29 (164.19, 277.03) HU, 138.44 (124.98, 238.56) HU, 105.46 (92.94, 169.53) HU, (93.77±15.55) HU, (79.15±12.84) HU, (68.99±11.75) HU, and (62.22±11.71) HU (all P < 0.05). The attenuation values at 110-140 keV and the attenuation value on the conventional CT images were not significantly different between STM and SI. The gradient of CT spectral curve of STM was 2.43±0.58, which was higher than the value of 1.50±0.40 for SI (P < 0.001). Using 1.72 and 248.80 HU as the threshold value for CT spectral curve slope and the attenuation value at 40 keV, could obtain the area under receiver operating characteristic (ROC) curve of 0.905 and 0.892, sensitivity of 88.0% and 80.0%, and specificity of 76.9% and 92.3%. CONCLUSION: CT spectral curve provides valuable semi-quantitative information for the differential diagnosis of STM and SI, which can be used as a supplement to traditional CT imaging.

Published
2021

6. Fungal diversity notes 1387–1511: taxonomic and phylogenetic contributions on genera and species of fungal taxa

Author

Boonmee, S., Wanasinghe, D. N., Calabon, M. S., Huanraluek, N., Chandrasiri, S. K. U., Jones, G. E. B., Rossi, W., Leonardi, M., Singh, S. K., Rana, S., Singh, P. N., Maurya, D. K., Lagashetti, A. C., Choudhary, D., Dai, Y. C., Zhao, C. L., Mu, Y. H., Yuan, H. S., He, S. H., Phookamsak, R., Jiang, H. B., Martín, M. P., Dueñas, M., Telleria, M. T., Kałucka, I. L., Jagodziński, A. M., Liimatainen, K., Pereira, D. S., Phillips, A. J. L., Suwannarach, N., Kumla, J., Khuna, S., Lumyong, S., Potter, T. B., Shivas, Roger G., Sparks, A. H., Vaghefi, N., Abdel-Wahab, M. A., Abdel-Aziz, F. A., Li, G. J., Lin, W. F., Singh, U., Bhatt, R. P., Lee, H. B., Nguyen, T. T. T., Kirk, P. M., Dutta, A. K., Acharya, K., Sarma, V. V., Niranjan, M., Rajeshkumar, K. C., Ashtekar, N., Lad, S., Wijayawardene, N. N., Bhat, D. J., Xu, R. J., Wijesinghe, S. N., Shen, H. W., Luo, Z. L., Zhang, J. Y., Sysouphanthong, P., Thongklang, N., Bao, D. F., Aluthmuhandiram, J. V. S., Abdollahzadeh, J., Javadi, A., Dovana, F., Usman, M., Khalid, A. N., Dissanayake, A. J., Telagathoti, A., Probst, M., Peintner, U., Garrido-Benavent, I., Bóna, L., Merényi, Z., Boros, L., Zoltán, B., Stielow, J. B., Jiang, N., Tian, C. M., Shams, E., Dehghanizadeh, F., Pordel, A., Javan-Nikkhah, M., Denchev, T. T., Denchev, C. M., Kemler, M., Begerow, D., Deng, C. Y., Harrower, E., Bozorov, T., Kholmuradova, T., Gafforov, Y., Abdurazakov, A., Xu, J. C., Mortimer, P. E., Ren, G. C., Jeewon, R., Maharachchikumbura, S. S. N., Phukhamsakda, C., Mapook, A., Hyde, K. D., Boonmee, S., Wanasinghe, D. N., Calabon, M. S., Huanraluek, N., Chandrasiri, S. K. U., Jones, G. E. B., Rossi, W., Leonardi, M., Singh, S. K., Rana, S., Singh, P. N., Maurya, D. K., Lagashetti, A. C., Choudhary, D., Dai, Y. C., Zhao, C. L., Mu, Y. H., Yuan, H. S., He, S. H., Phookamsak, R., Jiang, H. B., Martín, M. P., Dueñas, M., Telleria, M. T., Kałucka, I. L., Jagodziński, A. M., Liimatainen, K., Pereira, D. S., Phillips, A. J. L., Suwannarach, N., Kumla, J., Khuna, S., Lumyong, S., Potter, T. B., Shivas, Roger G., Sparks, A. H., Vaghefi, N., Abdel-Wahab, M. A., Abdel-Aziz, F. A., Li, G. J., Lin, W. F., Singh, U., Bhatt, R. P., Lee, H. B., Nguyen, T. T. T., Kirk, P. M., Dutta, A. K., Acharya, K., Sarma, V. V., Niranjan, M., Rajeshkumar, K. C., Ashtekar, N., Lad, S., Wijayawardene, N. N., Bhat, D. J., Xu, R. J., Wijesinghe, S. N., Shen, H. W., Luo, Z. L., Zhang, J. Y., Sysouphanthong, P., Thongklang, N., Bao, D. F., Aluthmuhandiram, J. V. S., Abdollahzadeh, J., Javadi, A., Dovana, F., Usman, M., Khalid, A. N., Dissanayake, A. J., Telagathoti, A., Probst, M., Peintner, U., Garrido-Benavent, I., Bóna, L., Merényi, Z., Boros, L., Zoltán, B., Stielow, J. B., Jiang, N., Tian, C. M., Shams, E., Dehghanizadeh, F., Pordel, A., Javan-Nikkhah, M., Denchev, T. T., Denchev, C. M., Kemler, M., Begerow, D., Deng, C. Y., Harrower, E., Bozorov, T., Kholmuradova, T., Gafforov, Y., Abdurazakov, A., Xu, J. C., Mortimer, P. E., Ren, G. C., Jeewon, R., Maharachchikumbura, S. S. N., Phukhamsakda, C., Mapook, A., and Hyde, K. D.

Abstract

This article is the 13th contribution in the Fungal Diversity Notes series, wherein 125 taxa from four phyla, ten classes, 31 orders, 69 families, 92 genera and three genera incertae sedis are treated, demonstrating worldwide and geographic distribution. Fungal taxa described and illustrated in the present study include three new genera, 69 new species, one new combination, one reference specimen and 51 new records on new hosts and new geographical distributions. Three new genera, Cylindrotorula (Torulaceae), Scolecoleotia (Leotiales genus incertae sedis) and Xenovaginatispora (Lindomycetaceae) are introduced based on distinct phylogenetic lineages and unique morphologies. Newly described species are Aspergillus lannaensis, Cercophora dulciaquae, Cladophialophora aquatica, Coprinellus punjabensis, Cortinarius alutarius, C. mammillatus, C. quercoflocculosus, Coryneum fagi, Cruentomycena uttarakhandina, Cryptocoryneum rosae, Cyathus uniperidiolus, Cylindrotorula indica, Diaporthe chamaeropicola, Didymella azollae, Diplodia alanphillipsii, Dothiora coronicola, Efibula rodriguezarmasiae, Erysiphe salicicola, Fusarium queenslandicum, Geastrum gorgonicum, G. hansagiense, Helicosporium sexualis, Helminthosporium chiangraiensis, Hongkongmyces kokensis, Hydrophilomyces hydraenae, Hygrocybe boertmannii, Hyphoderma australosetigerum, Hyphodontia yunnanensis, Khaleijomyces umikazeana, Laboulbenia divisa, Laboulbenia triarthronis, Laccaria populina, Lactarius pallidozonarius, Lepidosphaeria strobelii, Longipedicellata megafusiformis, Lophiotrema lincangensis, Marasmius benghalensis, M. jinfoshanensis, M. subtropicus, Mariannaea camelliae, Melanographium smilaxii, Microbotryum polycnemoides, Mimeomyces digitatus, Minutisphaera thailandensis, Mortierella solitaria, Mucor harpali, Nigrograna jinghongensis, Odontia huanrenensis, O. parvispina, Paraconiothyrium ajrekarii, Parafuscosporella niloticus, Phaeocytostroma yomensis, Phaeoisaria synnematicus, Phanerochaete hainanensis, Pleop

Published
2021

7. Combination of cells-based therapy with apelin-13 and hyperbaric oxygen efficiently promote neovascularization in ischemic animal model.

Author

YU, M., YUAN, H.-S., LI, Q., LII, Q., and TENG, Y.-F.

Abstract

OBJECTIVE: Critical lower-limb ischemia (CLLI) is characterized by high morbidity and mortality. The aim of this study was to explore the effectiveness of the combination of cell therapy with apelin-13 and hyperbaric oxygen in CLLI animal model. MATERIALS AND METHODS: The experimental ischemic rats were divided into five groups, including negative control, bone marrow derived mononuclear cells (BM-MNCs), apelin-13, hyperbaric oxygen treatment (HBOT) and apelin-13 with HBOT group. Each group was composed of 10 rats. Endothelial progenitor cells (EPCs) derived from bone marrow were transplanted into the ischemia rat model. After 3 weeks of transplantation, the formation of new vessels was evaluated by examining cluster of differentiation (CD)31, CD34 and vascular endothelial growth factor receptor 2 (VEGFR- 2) expressions as well as a direct vision of vessels by hematoxylin and eosin (HE) staining and immunohistochemistry. RESULTS: Compared with the negative control group, both angiogenic factors expressions and the number of new vessels increased notably by the transplantation of BM-MNCs in the ischemic models. Apelin-13 or HBOT alone improved the efficacy within limit while the combination of the three elements remarkably promoted the neovascularization in ischemic limbs. CONCLUSIONS: BM-MNC induced angiogenesis in the ischemic limbs and was considered an effective resource for cell therapy. The preliminary data of this study showed that the combination of cell therapy with apelin-13 and HBOT improved the efficacy of angiogenesis. [ABSTRACT FROM AUTHOR]

Published
2019

9. Polypores from Beijing area, Northern China

Author

UCL - AGRO/CABI - Département de chimie appliquée et des bio-industries, Dai, Y.-C., Yuan, H.-S., He, W., Decock, Cony, UCL - AGRO/CABI - Département de chimie appliquée et des bio-industries, Dai, Y.-C., Yuan, H.-S., He, W., and Decock, Cony

Abstract

72 species of poroid Aphyllophorales were identified from the materieals collected in Beijing area, northern China ; a checklist of these species is supplied, and the host of each species is listed. Most of the species are the first time reported in the studied area. Antrodia Wangii Y.C. Dai and H.S. Yuan (aphyllophorales, Basidiomycota) is described as new. It is characterized by effused-reflexed basidiocarps, cream to buff pore surface, cylindrical spores with a little curve and by growth exclusively on Prunus. It is rather similar to Antrodia pulvinascens which, however, has thicker and perennial basidiospores, and it is resupinate species.

Published
2006

12. An investigation of short haul air transportation in the southeastern United States

Author

Kanafani, A and Yuan, H. S

Subjects
Air Transportation And Safety
Abstract

The specific objectives of this stage of the study are numerous. First, an attempt is made to characterize the travel patterns in the study region, both in terms of origin destination patterns, and connecting and through trip patterns. Second, the structure of the air service in the region is characterized in an attempt to develop an understanding of the evolution of the short haul air transportation network. Finally, a look is taken at the socioeconomic environment of Atlanta and the region in order to seek an explanation for the historic evolution of short haul air travel activities and the rather high growth rates experienced in recent years.

Published
1977

25. New records of Heterobasidion parviporum in China.

Author

Dai, Y. C., Yuan, H. S., Wei, Y. L., and Korhonen, K.

Subjects
*HETEROBASIDION annosum, *BASIDIOCARPS, *HETEROBASIDION, *FORESTS & forestry, *CONIFER diseases & pests, *ROOT diseases, *CONIFERS, *ROOT rots
Abstract

Twenty-one basidiocarp specimens of Heterobasidion annosum s.l. were collected in six forest areas in western and central China, from host trees Picea schrenkiana, Abies fabri, Abies fargesii and Larix griffithii. Single-spore cultures were isolated from the basidiocarps and identified by mating tests. All the specimens proved to belong to the species Heterobasidion parviporum. The results show that this fungus has a wide distribution in China. It seems to be a less aggressive pathogen in China than in Europe, although reliable data on the occurrence of Heterobasidion root rot in coniferous forests of China are so far lacking. [ABSTRACT FROM AUTHOR]

Published
2006
Full Text
View/download PDF

26. Determination of the absolute configuration of (-)-(2R)-succinic-2-d acid by neutron diffraction study: unambiguous proof of the absolute stereochemistry of the NAD+/NADH interconversion.

Author

Yuan, H S, Stevens, R C, Fujita, S, Watkins, M I, Koetzle, T F, and Bau, R

Abstract

The absolute configuration of the CHD group (D = deuterium) in (-)-(2R)-succinic-2-d acid, as prepared from (-)-(2S,3R)-malic-3-d acid, has been shown unambiguously to be R by the technique of single-crystal neutron diffraction. The optically active cation (+)-phenylethylammonium was used as the chiral reference. The structure of [C6H5CH3CHNH3]+[HOOCCH2CHDCOO]- has been studied with x-ray diffraction at room temperature and neutron diffraction at 100 K. Crystal data from the neutron diffraction analysis of the phenylethylammonium salt of the title compound at 100 K: space group P21; a = 8.407(2) A, b = 8.300(4) A, c = 8.614(2) A, beta = 91.20(3) degrees; unit cell volume = 600.9(3) A3, zeta = 2 (numbers in parentheses are the estimated standard deviations). Final agreement factors are R(F2) = 0.0355 and R(wF2) = 0.0457 for 1690 independent neutron reflections and 297 parameters varied. The result confirms the stereochemistry of the malate/succinate transformation, as well as the NAD+/NADH interconversion, and demonstrates the usefulness of the single-crystal neutron diffraction method for determining the absolute configuration of molecules having a chiral monodeuteriomethylene group.

Published
1988
Full Text
View/download PDF

34. [The application of setting tube voltage and iodine delivery rate in weight-grouped for reducing the radiation and contrast medium dose in coronary CT angiography].

Author

Zhang Y, Wu JX, Wang Y, and Yuan HS

Subjects
Male, Female, Humans, Aged, Contrast Media, Prospective Studies, Radiation Dosage, Coronary Angiography methods, Tomography, X-Ray Computed methods, Body Weight, Radiographic Image Interpretation, Computer-Assisted methods, Computed Tomography Angiography methods, Iodine
Abstract

Objective: To evaluate the application value of reducing tube voltage and iodine delivery rate according to body weight in coronary CT angiography (CCTA). Methods: A prospective randomized controlled study. A total of 297 subjects, 172 males and 125 females, aged [ M ( Q 1 , Q 3 =141). The subjects in both groups were divided into four sub-groups according to body weight: 50-59 group, 60-69 kg group, 70-79 kg group and 80-89 kg group, respectively. The CCTA images were reconstructed with hybrid iterative algorithm(KARL 3D) with levels of 6 and 8, respectively. 100 kVp and iodine flow rate 1.1, 1.3, 1.4 and 1.5 gI/s recommended by the domestic CCTA application guidelines were used in the control group, while the tube voltage and iodine flow rate were reduced in the test group based on the guidelines and body weight:70 kVp and 0.8 g I/s in 50~59 kg group, 80 kVp and 1.0 gI/s in 60~69 kg group, 80 kVp and 1.1 gI/s in70~79 kg group, and 100 kVp and 1.5 gI/s in 80~89 kg group, respectively. The CT values and standard deviation ( n =156) and control group ( n =141). The subjects in both groups were divided into four sub-groups according to body weight: 50-59 group, 60-69 kg group, 70-79 kg group and 80-89 kg group, respectively. The CCTA images were reconstructed with hybrid iterative algorithm(KARL 3D) with levels of 6 and 8, respectively. 100 kVp and iodine flow rate 1.1, 1.3, 1.4 and 1.5 gI/s recommended by the domestic CCTA application guidelines were used in the control group, while the tube voltage and iodine flow rate were reduced in the test group based on the guidelines and body weight:70 kVp and 0.8 g I/s in 50~59 kg group, 80 kVp and 1.0 gI/s in 60~69 kg group, 80 kVp and 1.1 gI/s in70~79 kg group, and 100 kVp and 1.5 gI/s in 80~89 kg group, respectively. The CT values and standard deviation ( SD ) of aortic root, proximal left anterior descending branch (LAD) and distal right coronary artery (RCA) luminal CCTA, the signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) of coronary artery CT images, subjective coronary scores and effective radiation dose (ED) were compared between the both groups. One-way ANOVA or Wilcoxon test was used to analyze the differences of above indicators between the groups to evaluate the application value of low voltage and low iodine flow rate based on weight in coronary CCTA. Results: CT values of aortic root, LAD proximal CT values and SD values of aortic root [411.4 (377.2, 439.8) HU, (366.3±42.9) HU, 26.5±2.3] in the test group were all higher than those in the control group [379.00 (335.2, 415.9) HU, (355.0±46.9) HU and 24.8±2.3]. The differences were statistically significant (all P <0.05), and the other parameters were not statistically significant (all P >0.05). The total subjective image quality score in test group were superior to those in the control group (all P< 0.05). The total ED and contrast agent dosage [2.07 (1.52, 3.28) mSv and (38.28±9.68) ml] in CCTA examination in the test group were lower than those in the control group [3.30(2.32, 4.44) mSv and (45.31±5.63) ml], and the differences were statistically significant (all P <0.05). The dosage of ED and contrast agent in the test group was decreased by 37.3% and 15.5%, respectively. Conclusion: Combined with KARL 3D,it is feasible to reduce contrast medium and ED by setting the tube voltage and iodine flow rate of CCTA according to the weight of the subject, which can further reduce the radiation dose and contrast agent dosage of CCTA.

Published
2024
Full Text
View/download PDF

35. [Correlations between plaque characteristics and cerebral blood flow in patients with moderate to severe carotid stenosis using magnetic resonance vessel wall imaging].

Author

Liu Y, Huo R, Xu HM, Wang Z, Wang T, and Yuan HS

Subjects
Humans, Ulcer pathology, Magnetic Resonance Imaging methods, Carotid Arteries chemistry, Carotid Arteries pathology, Hemorrhage, Magnetic Resonance Spectroscopy, Cerebrovascular Circulation, Carotid Stenosis diagnostic imaging, Plaque, Atherosclerotic diagnostic imaging, Calcinosis
Abstract

Objective: To investigate the correlations between carotid plaque characteristics and cerebral blood flow (CBF) in patients with unilateral moderate to severe carotid stenosis using high-resolution magnetic resonance imaging (HR-MRI) and 3D pseudo-continuous arterial spin labeling (3D pcASL)., Methods: A total of 43 patients with unilateral moderate to severe carotid stenosis were recruited. The degree of carotid stenosis, maximum wall thickness (Max WT) and normalized wall index (NWI) were measured using HR-MRI. The plaque characteristics were analyzed. Presence or absence of plaque components including intraplaque hemorrhage (IPH), lipid-rich necrotic nucleus (LRNC), calcification and ulcer were identified, and the grades of calcification and LRNC were recorded. CBF values within the region of interest representing the bilateral middle cerebral artery distribution were acquired using 3D pcASL. Paired sample t test was used to compare the differences of CBF values between the index side and the contralateral side. Spearman correlation analysis was conducted to evaluate the correlations of CBF values with the degree of carotid stenosis, Max WT and NWI. The differences of CBF values between the patients with or without IPH and ulcer were compared using Mann-Whitney U test. Different levels of calcification and LRNC were compared by Kruskal-Wallis test, respectively., Results: The ave-rage degree of carotid stenosis at the index side was 77.30%±11.79%. The mean CBF value of the index side was (46.77±11.65) mL/(100 g·min), and that of the contralateral side was (49.92±9.95) mL/(100 g·min), and the difference was statistically significant ( t =-2.474, P =0.017). The mean Max WT and NWI of the carotid plaques at the index side was (6.40±1.87) mm and 62.91%±8.87%, respectively. There were no significant correlations of CBF values with the degrees of stenosis, Max WT and NMI ( P >0.05). Plaque composition analysis showed that the CBF values of the index side were different when there was calcification or not and the degrees of calcification were different ( P =0.030), but there were no differences between the CBF values on the index sides with or without IPH, ulcer and LRNC., Conclusion: In patients with unilateral moderate to severe carotid stenosis, calcification might affect CBF perfusion. When there is no calcification, the plaque components need attention.

Published
2023

36. [Cortical thickness and cognitive impairment in patients with amyotrophic lateral sclerosis].

Author

Ye S, Jin PP, Zhang N, Wu HB, Shi L, Zhao Q, Yang K, Yuan HS, and Fan DS

Subjects
Humans, Neuropsychological Tests, Magnetic Resonance Imaging methods, Amyotrophic Lateral Sclerosis complications, Amyotrophic Lateral Sclerosis diagnostic imaging, Neurodegenerative Diseases, Frontotemporal Dementia psychology, Cognitive Dysfunction diagnostic imaging, Cognitive Dysfunction etiology
Abstract

Objective: Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease with high morbidity and mortality. There are about 5%-15% of ALS patients combining with frontotemporal lobe degeneration (FTLD) at the same time and 50% of patients combing with cognitive function changes. The analysis of cortical thickness based on MRI is an important imaging method to evaluate brain structure. The aim of the study was to explore the changes of brain structure in ALS patients by cortical thickness analysis, and to explore the correlation between the brain structure and cognitive function., Methods: In the study, 18 ALS patients treated in Department of Neurology, Peking University Third Hospital and 18 normal controls (age, gender and education level matched) were included. 3D magnetization prepared rapid gradient echo imaging (MPRAGE) sequence MRI was performed and the cortical thickness was analyzed. At the same time, all the ALS patients took neuropsychology assessments, including: mini-mental state examination (MMSE), verbal fluency test (VFT), Stroop color word test (SCWT), prospective memory (PM), emotional picture perception and recognition, and faux pas story test., Results: After cognitive assessment, two ALS patients had cognitive impairment. One was in accordance with ALS-frontotemporal dementia (FTD) diagnosis and the other one was in accordance with ALS cognitive impairment (ALSci) diagnosis. In all the 18 ALS patients and 18 normal controls, the cortical thickness of the left medial orbitofrontal lobe and the medial temporal lobe were significantly reduced ( P < 0.05) in ALS group by the vertex-wise comparison. Cortical thickness of the left entorhinal cortex, the left inferior temporal gyrus, the left medial orbitofrontal lobe and the left insular lobe was significantly reduced ( P < 0.05) by the region-wise comparison. However, when only concluded the 16 ALS non-cognitive impairment patients, there was no significant difference between the two groups ( P >0.05). There were correlations between the scores of prospective memory, emotional picture perception and recognition, faux pas story test and the cortical thickness of their corresponding regions ( P < 0.05)., Conclusion: The cortical thickness of ALS patients are correlated with neuropsychological scores which may reflect the changes of cortical structure corresponding to the cognitive assessment, and may provide help for the early diagnosis of cognitive changes in ALS patients.

Published
2022

37. [Pay attention to the imaging research in marathon-related musculoskeletal injuries].

Author

Yuan HS and Liu JF

Subjects
China, Humans, Athletic Injuries, Marathon Running
Abstract

Marathon-related musculoskeletal injuries are very common. The imaging research of musculoskeletal injuries may provide scientific support for the health protection of marathon athletes. Unfortunately, imaging studies on musculoskeletal system injury are relatively lacking, large sample studies are almost blank, and neither imaging methods nor study populations are comprehensive enough. The imaging study of marathon-related musculoskeletal injuries remains to be further studied. As a country with a large number of marathon participants, China should strengthen relevant imaging studies to provide more health protection for marathon enthusiasts and professional athletes.

Published
2022
Full Text
View/download PDF

38. Comparative analysis and differentiation between SAPHO syndrome and spondyloarthropathies using whole-spine MRI.

Author

Zhang LH, Han SB, Song L, Gao S, Zhao Q, Deng XL, and Yuan HS

Subjects
Adult, Diagnosis, Differential, Female, Humans, Intervertebral Disc diagnostic imaging, Lumbar Vertebrae diagnostic imaging, Male, Middle Aged, Retrospective Studies, Spine diagnostic imaging, Young Adult, Acquired Hyperostosis Syndrome diagnostic imaging, Magnetic Resonance Imaging methods, Spondylarthropathies diagnostic imaging
Abstract

Aim: To determine the imaging characteristics of SAPHO (synovitis, acne, pustulosis, hyperostosis, and osteitis) syndrome and seronegative spondyloarthropathies (SpAs) on whole-spine magnetic resonance imaging (WS-MRI) and evaluate the role of WS-MRI in the diagnosis and differentiation of the two diseases., Materials and Methods: Twenty-eight patients with SAPHO and 44 with SpAs were included. All patients were symptomatic and clinically diagnosed with SAPHO or SpAs, and all underwent WS-MRI for comparison of imaging characteristics., Results: The mean age of the SAPHO patients was 48.7 ± 12.7 years, while that of the SpA patients was 34.7 ± 12.3 years (p<0.001). WS-MRI showed that the frequency of cervical, thoracic, and lumbar spine involvement was 53.6% versus 52.3%, 75% versus 88.6%, and 60.7% versus 63.6%, respectively (p=0.70, 0.13, and 0.80). The frequency of sacroiliac joint involvement was 7.1% and 100% (p<0.001). Continuous spinal involvement accounted for 50% versus 43.2%, 60.7% versus 84.1%, and 39.3% versus 40.9% in the cervical, thoracic, and lumbar vertebrae, respectively (p=0.03). WS-MRI showed that bone marrow oedema of spinal anterior corner was observed in 50% versus 75% (p=0.03). Vertebral body and posterior attachment involvement accounted for 85.7% versus 93.2% and 14.3% versus 34.1% (p=0.3, 0.06). The frequency of bone erosion in mobile spine was 75% and 36.4%, respectively (p=0.02). The frequency of intervertebral disc, endplate, anterior thoracic wall, and paraspinal soft-tissue swelling was 42.9% versus 18.2%, 53.6% versus 22.7%, 85.7% versus 42.2%, and 50% versus 11.4% (p=0.02, 0.00)., Conclusions: Factors differentiating the two groups at WS-MRI were bone marrow oedema of the spinal anterior corner, bone erosion, and swelling of the intervertebral disc, endplate, anterior thoracic wall, and paraspinal soft-tissue., (Copyright © 2020 The Royal College of Radiologists. Published by Elsevier Ltd. All rights reserved.)

Published
2021
Full Text
View/download PDF

39. [CT spectral curve in differentiating spinal tumor metastasis and infections].

Author

Yuan Y, Lang N, and Yuan HS

Subjects
Diagnosis, Differential, Humans, Middle Aged, ROC Curve, Sensitivity and Specificity, Tomography, X-Ray Computed, Spinal Cord Neoplasms, Spinal Neoplasms diagnostic imaging
Abstract

Objective: To evaluate the value of CT spectral curve in differentiating spinal tumor metastasis (STM) from spinal infections (SI)., Methods: In the study, 29 STM and 18 SI patients proved pathologically and clinically were examined by dual energy spectral CT (DESCT). The monochromatic images and CT spectral curves were generated automatically by GSI Viewer software. The attenuation values at different energy levels (40-140 keV, every 10 keV), the attenuation values of the lesions on the conventional polychromatic CT images and the gradients of the curve were calculated and compared between STM and SI., Results: The median age of STM and SI (58 years vs. 64 years) were not significantly different ( U =171, P =0.4). The attenuation values of STM at 40-100 keV were 281.79 (143.67, 446.19) HU, 199.68 (100.04, 321.49) HU, 151.54 (81.47, 243.49) HU, (122.64±27.72) HU, (99.90±23.88) HU, (85.82±21.61) HU, and (75.94±20.27) HU, respectively, which were significantly higher than SI: 185.29 (164.19, 277.03) HU, 138.44 (124.98, 238.56) HU, 105.46 (92.94, 169.53) HU, (93.77±15.55) HU, (79.15±12.84) HU, (68.99±11.75) HU, and (62.22±11.71) HU (all P < 0.05). The attenuation values at 110-140 keV and the attenuation value on the conventional CT images were not significantly different between STM and SI. The gradient of CT spectral curve of STM was 2.43±0.58, which was higher than the value of 1.50±0.40 for SI ( P < 0.001). Using 1.72 and 248.80 HU as the threshold value for CT spectral curve slope and the attenuation value at 40 keV, could obtain the area under receiver operating characteristic (ROC) curve of 0.905 and 0.892, sensitivity of 88.0% and 80.0%, and specificity of 76.9% and 92.3%., Conclusion: CT spectral curve provides valuable semi-quantitative information for the differential diagnosis of STM and SI, which can be used as a supplement to traditional CT imaging.

Published
2020

40. [Study on the deposition of monosodium urate in patients with first-episode of acute gouty arthritis by dual energy CT].

Author

Zhang Y, Dong XZ, and Yuan HS

Subjects
Adolescent, Adult, Aged, Female, Humans, Male, Middle Aged, Retrospective Studies, Tomography, X-Ray Computed, Uric Acid, Young Adult, Arthritis, Gouty, Gout
Abstract

Objectives: To investigate the characteristics of monosodium urate (MSU) deposition in patients with the first-episode of acute gouty arthritis (Gout) by using dual energy CT (DECT) imaging technique. Methods: A total of 70 first-episode patients with acute Gout diagnosed in Peking University Third Hospital in 2019 were collected as the case group, including 69 males and 1 female, aged 17-65 (39±14) years. During the same period, a total of 15 male patients aged 19-56 (33±12) years were collected as the control group. They were admitted to the hospital due to sports injuries and were excluded from gout. The DECT data of the first-affected or the most painful joints of gout in the case group and the surgical ankle joints in the control group were retrospectively analyzed. The crystal morphology, volume and deposition location of MSU in the measured joints were evaluated and recorded, and the degree of MSU deposition in the joints of the first-episode patients with Gout and its coincidence with clinical symptoms were summarized. The χ(2) test, and Kruskal-walls were used for statistical analysis. Results: The detection rate of MSU by DECT in the case group was 97.1% (68/70), and 0 in the control group. The first-affected joints of Gout included 52 cases of ankles (74.3%), 13 cases of knees (18.6%), and 5 cases of wrists (7.1%). The three joints were mainly deposited with scattered submillimeter MCU. There was no significant difference in MSU morphology and volume between the three joints. The locations with the most MCU deposits among the three joints were 78.8% (41/52) of the posterior calf tendons (including Achilles tendon), 76.9% (10/15) of the knee articular cartilages, and 60.0% (3/5) of the palmaris tendons, while the distribution of the first metatarsophalangeal joint was less than 13.5% (7/52). The number of MSU deposited joints detected by DECT was 37 cases more than that of symptomatic joints, accounting for 52.8%. Conclusions: DECT is highly sensitive in detecting MCU in the first-episode of acute Gout, which helps to improve the early diagnosis rate of gout.

Published
2020
Full Text
View/download PDF

41. [Clinical value of artifact identification in ankle dual-energy CT for gout diagnosis].

Author

Zhang Y, Wang L, and Yuan HS

Subjects
Artifacts, Female, Humans, Male, Tomography, X-Ray Computed, Uric Acid, Ankle, Gout diagnostic imaging
Abstract

Objective: To investigate the clinical value of artifact identification in ankle dual-energy CT for gout diagnosis. Methods: A total of 58 patients with gout, who were definitely diagnosed in Peking University Third Hospital from December 2018 to May 2019, were included in the case group, which were composed of 57 males and 1 female. And 37 individuals without gout were regarded as control group, which were composed of 36 males and 1 female. Dual-energy CT was performed for one foot, and the affected side or the more serious side was chosen in the case group. The dual-energy data were used in gout-recognition software to highlight the monosodium urate (MSU) with green-colored. And to compare the difference in MSU relevance ratio on the images of toenail, submillimeter spots, skins, movements and vascular calcification between two groups. Results: In the case group, 55 patients were revealed with MSU green-colored toenails (relevance ratio 94.8%), while 22 cases in the control groups (relevance ratio 59.5%). There was significantly statistical difference on the mean toenails numbers and the MSU distribution scores in the two groups (all P< 0.01). In the case group, 47 patients were revealed with green-colored submillimeter spots (relevance ratio 81.0%),while 5 cases in the control group (relevance ratio 13.5%). The relevance ratio of submillimeter spots on tendon and ligament in the case group and control group were 75.9% (44/58) and 13.5%(5/37). There was also significantly statistical difference in the two groups on submillimeter spots (all P< 0.01). And there was no significantly statistical difference in the two groups on MSU green-colored skins, movements and vascular calcification. Conclusion: There is great value for gout clinical diagnosis when green-colored MSU is detected on toenails and submillimeter spots, which should not be judged as artifact simply.

Published
2020
Full Text
View/download PDF

42. [Cerebral blood flow measurements in patients with comorbid hypertension and depression using 3D arterial spin labeling].

Author

Liu Y, Zeng XZ, Wang Z, Zhang H, Wang XL, and Yuan HS

Subjects
Adult, Aged, Brain, Cerebrovascular Circulation, Comorbidity, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Depression, Hypertension
Abstract

Objective: To evaluate cerebral blood flow (CBF) in patients with comorbid hypertension in depression using 3D pseudocontinuous arterial spin labeling (3D pcASL) and to compare the differences of CBF values in depression, hypertension, and comorbid hypertension between depression and healthy control groups. To investigate the correlation between CBF values and degrees of depression., Methods: Sixteen patients with depression (depression group, 3 males and 13 females, age range of 42-72 years old), sixteen patients with hypertension (hypertension group, 3 males and 13 females, age range of 41-68 years old), sixteen patients with comorbid hypertension in depression (comorbidity group, 3 males and 13 females, age range of 45-74 years old), and sixteen healthy controls (control group, 3 males and 13 females, age range of 43-68 years old) were recruited. 3D pcASL sequence was performed by GE 3.0T magnetic resonance scanner and CBF map was generated automatically. Statistical parametric mapping (SPM8) was performed to preprocess the CBF map, which was spatially normalized and smoothed. Comparison of the CBF values among the four groups was conducted by ANOVA. Correlation between the average CBF values in areas of decreased CBF and Hamilton depression scale (HAMD-17) was investigated., Results: The patients with comorbid hypertension in depression demonstrated lower CBF in bilateral superior frontal gyri, middle frontal gyri, inferior frontal gyri, right superior parietal gyrus, right inferior parietal gyrus, right supramarginal gyrus, left caudate nucleus and left insula lobe in comparison with the controls. Compared with control group, CBF values decreased in bilateral frontal lobes, but did not reach statistical significance. There were no significant differences of CBF values between the patients with hypertension and control subjects. Compared with depression, the patients with comorbid hypertension in depression showed lower CBF values in bilateral frontal lobes and right supramarginal gyrus. Compared with hypertension, lower CBF values in left middle frontal gyrus in the patients with comorbid hypertension in depression were shown. Correlation analysis indicated that no correlation between CBF values and scores of HAMD-17 was shown., Conclusion: Although there were no significant decreases of CBF values in patients with depression and hypertension, regional hypoperfusions were observed in patients with comorbid hypertension in depression. Hypertension might play a synergistic action on cerebral hypoperfusion in patients with comorbid hypertension in depression.

Published
2019

43. [CT-guidance interstitial Iodine-125 seed brachytherapy as a salvage therapy for recurrent head and neck carcinoma].

Author

Jiang YL, Ji Z, Tian SQ, Guo FX, Yuan HS, Liu C, Sun HT, and Wang JJ

Subjects
Female, Humans, Iodine Radioisotopes, Male, Neoplasm Recurrence, Local, Retrospective Studies, Tomography, X-Ray Computed, Brachytherapy, Salvage Therapy
Abstract

Objective: To investigate the efficacy of CT-guidance interstitial Iodine-125 seed brachytherapy as a salvage therapy for recurrent head and neck carcinoma. Methods: A total of 122 patients who had been treated for recurrent head and neck carcinoma with CT-guided Iodine-125 seed permanent implantation were conducted a retrospective analysis at Peking University Third Hospital from February 2003 to December 2015. The study included 78 male and 44 female patients. Of the 122 patients, 76 had undergone radical surgery, 106 had received EBRT. Among the patients who underwent EBRT, the total dose delivered to PTV ranged from 30 to 140 Gy (median, 68.4 Gy). The actuarial median number of the implanted Iodine-125 seeds was 38 (range, 5-158). The specific activity of Iodine-125 seeds ranged from 14.8 to 28.9 MBq/seed (median, 22.2 MBq). The evaluation of post plan showed the actuarial D90 ranged from 46 to 282 Gy (median, 121 Gy). The overall local control and survival times were determined by using the Kaplan - Meier method from SPSS 13.0.Univariate analysis was performed on the local control rate and overall survival rate. Results: Tumor responses rate was 75.4%. The median local control time was 10.0 months (95% CI 9.8-24.2 months), and the 1-, 2-, 3-, and 5-year local control were 41.9%, 21.2%, 3.7%, and 3.7%, respectively. Univariate analysis showed that the local control in D90≥120 Gy group had an increasing tendency, but no statistical difference were found. The effect of local control in the squamous cell carcinoma group was slightly worse than that in the non-squamous cell carcinoma group ( P =0.032). Multi-factor analysis showed that the effect of local control in the squamous cell carcinoma group was slightly poor ( P =0.03). The median survival time was 14 months (95% CI 14.4-35.8 months), and the 1-, 2-, 3- and 5-year survival rate were 51.5%, 34.2%, 19.4%, and 19.4%, respectively. The three factors, such as the tumor responses, KPS status before the seed implantation, and the D90 after the seed implantation, had a tendency to improve the total survival, but there was still no statistical differences. Multivariate analysis showed no clear influence factors. Conclusions: Interstitial permanent Iodine-125 seed implantation is an effective salvage re-irradiation modality for recurrent head and neck carcinoma after previous surgery and/or EBRT. CT image-guided method could yield the reliable seeds configuration and accurate dose distribution.

Published
2018
Full Text
View/download PDF

44. Imaging Appearances and Pathologic Characteristics of Spinal Epidural Meningioma.

Author

Zhang LH and Yuan HS

Subjects
Adult, Aged, Cervical Vertebrae, Epidural Neoplasms pathology, Female, Humans, Magnetic Resonance Imaging, Male, Meningeal Neoplasms pathology, Meningioma pathology, Middle Aged, Retrospective Studies, Thoracic Vertebrae, Tomography, X-Ray Computed, Young Adult, Epidural Neoplasms diagnostic imaging, Meningeal Neoplasms diagnostic imaging, Meningioma diagnostic imaging
Abstract

Background and Purpose: Spinal epidural meningioma is an uncommon tumor. This study aimed to analyze the imaging and pathologic characteristics of this rare tumor., Materials and Methods: Fourteen confirmed cases of epidural meningioma were retrospectively reviewed, and imaging characteristics and pathologic findings were analyzed to identify the typical features., Results: The mean age of the patients (4 men, 10 women) was 44.9 years. Twelve tumors were in the cervical spinal canal, and 2, in the thoracic spinal canal. There were 9 en plaque meningiomas, 4 dumbbell-shaped meningiomas, and 1 fusiform/ovoid meningioma. The epidural meningiomas extended over 2-5 spinal segments (mean, 3.2 spinal segments). A soft epidural mass was seen in 12/14 (86%) patients. Dural calcification was seen in 8/14 (57%) tumors. Tumor caused intervertebral foramen enlargement in 10/14 (71%) patients and adhered to the nerve roots in 11/14 (79%) patients. Intradural invasion was seen in 8/14 (57%) patients. The dural tail sign was present in 13/14 (93%) tumors on contrast-enhanced T1WI. Regarding pathologic type, 10 of 14 (71%) were psammomatous, 2 of 14 (14%) were meningothelial, 1 of 14 (7%) was angiomatous, and 1 of 14 (7%) was transitional. During follow-up (mean follow-up, 73.4 months; range, 4-192 months), 7 patients had recurrence. Recurrences were between 4 and 192 months after the operation., Conclusions: Epidural meningioma has 3 different growth patterns. Dural thickening, calcification, invasion, and epidural mass formation are characteristic features of epidural meningioma. Regular follow-up imaging is required to detect recurrence., (© 2018 by American Journal of Neuroradiology.)

Published
2018
Full Text
View/download PDF

45. A directional passive air sampler for monitoring polycyclic aromatic hydrocarbons (PAHs) in air mass.

Author

Tao S, Liu YN, Lang C, Wang WT, Yuan HS, Zhang DY, Qiu WX, Liu JM, Liu ZG, Liu SZ, Yi R, Ji M, and Liu XX

Subjects
Air Movements, Environmental Monitoring methods, Particle Size, Temperature, Air Pollutants analysis, Environmental Monitoring instrumentation, Polycyclic Aromatic Hydrocarbons analysis
Abstract

A passive air sampler was developed for collecting polycyclic aromatic hydrocarbons (PAHs) in air mass from various directions. The airflow velocity within the sampler was assessed for its responses to ambient wind speed and direction. The sampler was examined for trapped particles, evaluated quantitatively for influence of airflow velocity and temperature on PAH uptake, examined for PAH uptake kinetics, calibrated against active sampling, and finally tested in the field. The airflow volume passing the sampler was linearly proportional to ambient wind speed and sensitive to wind direction. The uptake rate for an individual PAH was a function of airflow velocity, temperature and the octanol-air partitioning coefficient of the PAH. For all PAHs with more than two rings, the passive sampler operated in a linear uptake phase for three weeks. Different PAH concentrations were obtained in air masses from different directions in the field test.

Published
2008
Full Text
View/download PDF

46. Combination pharmacological cardioversion of permanent atrial fibrillation in post-prosthetic mitral valve replacement outpatients: a novel approach for the treatment of atrial fibrillation.

Author

Qian YJ, Xiao XJ, Yuan HS, Tang H, Shao HZ, and Wei DM

Subjects
Adult, Anti-Arrhythmia Agents adverse effects, Combined Modality Therapy, Drug Therapy, Combination, Female, Follow-Up Studies, Humans, Male, Outpatients, Treatment Outcome, Anti-Arrhythmia Agents therapeutic use, Atrial Fibrillation drug therapy, Electric Countershock, Heart Valve Prosthesis, Mitral Valve pathology
Abstract

This study explored the efficacy and safety of combination pharmacological cardioversion of permanent atrial fibrillation in outpatients following prosthetic mitral valve replacement. The study group comprised 99 outpatients who were randomly divided into two groups. In group 1 (n = 50), only ventricular heart rate was controlled. In group 2 (n = 49), combination pharmacological cardioversion therapy with low-dose oral amiodarone (2 mg/kg), captopril (0.25 mg/kg) and simvastatin (0.3 mg/kg) was administered daily. During 12 months of serial pharmacological treatment, the cardioversion rate was 6% for group 1 and 39% for group 2; the likelihood of cardioversion differed significantly between the two groups. In group 2, one patient developed severe pruritus that necessitated withdrawal from the study and six patients ceased captopril treatment after contracting a persistent cough. In summary, combination pharmacological cardioversion was found to be effective and safe in outpatients who had undergone prosthetic mitral valve replacement.

Published
2008
Full Text
View/download PDF

47. Distribution of sorbed phenanthrene and pyrene in different humic fractions of soils and importance of humin.

Author

Pan B, Xing BS, Liu WX, Tao S, Lin XM, Zhang XM, Zhang YX, Xiao Y, Dai HC, and Yuan HS

Subjects
Adsorption, Environmental Monitoring methods, Hydrophobic and Hydrophilic Interactions, Solubility, Humic Substances analysis, Phenanthrenes analysis, Pyrenes analysis, Soil Pollutants analysis
Abstract

Contributions of fulvic-humic acids (FA/HA) and humin (HM) to sorption of phenanthrene (PHE) and pyrene (PYR) in a soil were differentiated using a humic separation procedure after multi-concentration sorption experiments. It was found that the amount of solutes in FA/HA did not change significantly after 48 h, while that in HM increased continuously and slowly up to the end of the experimental period (720 h), indicating that HM was the main region for slow sorption. Based on the fitting results using Freundlich equation, it was found that nonlinearity of both solutes was greater in HM than in FA/HA, consistent with the sorption characteristics of individually extracted HA and HM in a separate experiment. The observed nonlinearity of the solute distribution was confirmed by using three other soil samples with organic carbon contents ranging from 0.7 to 7.9%. Distribution dynamics of PHE and PYR among various fractions were also discussed.

Published
2006
Full Text
View/download PDF

48. Crystallization and preliminary X-ray diffraction analysis of the 1,3-1,4-beta-D-glucanase from Fibrobacter succinogenes.

Author

Tsai LC, Shyur LF, Lin SS, and Yuan HS

Subjects
Crystallization, Crystallography, X-Ray, Gene Deletion, Glycoside Hydrolases genetics, Protein Conformation, Bacteria enzymology, Glycoside Hydrolases chemistry
Abstract

The truncated 1,3-1,4-beta-glucanase (1,3-1,4-beta-D-glucan 4-glucanohydrolase; E.C. 3.2.1.73) from Fibrobacter succinogenes was crystallized in four different forms by the vapour-diffusion method. Form A crystals have the largest trigonal P321 unit cell, diffracting to 3.0 A resolution with four to six molecules per asymmetric unit. Form B and C crystals belong to the same monoclinic space group P2(1), but the form B unit cell is twice as large as the unit cell of form C. Form B crystals diffract to 2.5 A resolution and contain four molecules per asymmetric unit. Form C crystals diffract to 2.1 A resolution and contain two molecules per asymmetric unit. Form D crystals have the smallest orthorhombic P2(1)2(1)2(1) unit cell, containing only one molecule per asymmetric unit, and diffract beyond 2.1 A resolution. The crystallization conditions for form B and C crystals are almost identical, except that form C crystals were grown in the presence of 2 mM Ca(2+) ions. It is likely that Ca(2+) directly binds to the glucanase, leading to unit-cell shrinkage as observed in other Bacillus glucanase crystals. A self-rotation search identified non-crystallographic twofold axes that combine with the crystallographic twofold dyads to give 222 symmetry for both form A and form B crystals, indicating that the glucanase has a tendency to pack in 222 symmetry.

Published
2001
Full Text
View/download PDF

49. Directed mutagenesis of apecific active site residues on Fibrobacter succinogenes 1,3-1,4-beta -D-glucanase significantly affects catalysis and enzyme structural stability.

Author

Chen JL, Tsai LC, Wen TN, Tang JB, Yuan HS, and Shyur LF

Subjects
Amino Acid Sequence, Animals, Bacterial Proteins genetics, Bacterial Proteins metabolism, Catalysis, Enzyme Stability genetics, Glycoside Hydrolases genetics, Gram-Negative Anaerobic Bacteria genetics, Molecular Sequence Data, Mutagenesis, Site-Directed, Mutation, Rumen microbiology, Structure-Activity Relationship, Glycoside Hydrolases metabolism, Gram-Negative Anaerobic Bacteria enzymology
Abstract

The functional and structural significance of amino acid residues Met(39), Glu(56), Asp(58), Glu(60), and Gly(63) of Fibrobacter succinogenes 1,3-1,4-beta-d-glucanase was explored by the approach of site-directed mutagenesis, initial rate kinetics, fluorescence spectroscopy, and CD spectrometry. Glu(56), Asp(58), Glu(60), and Gly(63) residues are conserved among known primary sequences of the bacterial and fungal enzymes. Kinetic analyses revealed that 240-, 540-, 570-, and 880-fold decreases in k(cat) were observed for the E56D, E60D, D58N, and D58E mutant enzymes, respectively, with a similar substrate affinity relative to the wild type enzyme. In contrast, no detectable enzymatic activity was observed for the E56A, E56Q, D58A, E60A, and E60Q mutants. These results indicated that the carboxyl side chain at positions 56 and 60 is mandatory for enzyme catalysis. M39F, unlike the other mutants, exhibited a 5-fold increase in K(m) value. Lower thermostability was found with the G63A mutant when compared with wild type or other mutant forms of F. succinogenes 1,3-1,4-beta-d-glucanase. Denatured wild type and mutant enzymes were, however, recoverable as active enzymes when 8 m urea was employed as the denaturant. Structural modeling and kinetic studies suggest that Glu(56), Asp(58), and Glu(60) residues apparently play important role(s) in the catalysis of F. succinogenes 1,3-1,4-beta-d-glucanase.

Published
2001
Full Text
View/download PDF

50. Structural basis of non-specific lipid binding in maize lipid-transfer protein complexes revealed by high-resolution X-ray crystallography.

Author

Han GW, Lee JY, Song HK, Chang C, Min K, Moon J, Shin DH, Kopka ML, Sawaya MR, Yuan HS, Kim TD, Choe J, Lim D, Moon HJ, and Suh SW

Subjects
Binding Sites, Crystallography, X-Ray, Decanoic Acids metabolism, Fatty Acids chemistry, Humans, Hydrogen Bonding, Ligands, Models, Molecular, Oleic Acid metabolism, Pliability, Protein Conformation, Serum Albumin chemistry, Serum Albumin metabolism, Substrate Specificity, Carrier Proteins chemistry, Carrier Proteins metabolism, Fatty Acids metabolism, Plant Proteins, Zea mays chemistry
Abstract

Non-specific lipid-transfer proteins (nsLTPs) are involved in the movement of phospholipids, glycolipids, fatty acids, and steroids between membranes. Several structures of plant nsLTPs have been determined both by X-ray crystallography and nuclear magnetic resonance. However, the detailed structural basis of the non-specific binding of hydrophobic ligands by nsLTPs is still poorly understood. In order to gain a better understanding of the structural basis of the non-specific binding of hydrophobic ligands by nsLTPs and to investigate the plasticity of the fatty acid binding cavity in nsLTPs, seven high-resolution (between 1.3 A and 1.9 A) crystal structures have been determined. These depict the nsLTP from maize seedlings in complex with an array of fatty acids.A detailed comparison of the structures of maize nsLTP in complex with various ligands reveals a new binding mode in an nsLTP-oleate complex which has not been seen before. Furthermore, in the caprate complex, the ligand binds to the protein cavity in two orientations with equal occupancy. The volume of the hydrophobic cavity in the nsLTP from maize shows some variation depending on the size of the bound ligands. The structural plasticity of the ligand binding cavity and the predominant involvement of non-specific van der Waals interactions with the hydrophobic tail of the ligands provide a structural explanation for the non-specificity of maize nsLTP. The hydrophobic cavity accommodates various ligands from C10 to C18. The C18:1 ricinoleate with its hydroxyl group hydrogen bonding to Ala68 possibly mimics cutin monomer binding which is of biological importance. Some of the myristate binding sites in human serum albumin resemble the maize nsLTP, implying the importance of a helical bundle in accommodating the non-specific binding of fatty acids., (Copyright 2001 Academic Press.)

Published
2001
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results