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2. Precious Moments

Author

LeVert, Connie

Subjects
Arts, visual and performing, Literature/writing
Abstract

IT was a damn cold day with high winds even by Arctic standards. It was unlikely that we would see any fixed-wing aircraft landing. There was one helicopter stranded and [...]

Published
2024

3. Remembering Cross Pollination

Author

LeVert, Connie

Subjects
Arts, visual and performing, Literature/writing
Abstract

YEARS AGO, seven regular members of the Manitoulin Writers' Circle attended a special meeting to decide if it was possible for each member to find a companion from another artistic [...]

Published
2024

4. David Dies

Author

Levert, Connie

Subjects
Canada. Health Canada, Arts, visual and performing, Literature/writing
Abstract

DAVID died. He was 14 years old and the youngest of five boys. He missed the front step of the family's old and dilapidated house, and fell into the thick [...]

Published
2024

5. Stepwise recombination suppression around the mating-type locus in an ascomycete fungus with self-fertile spores

Author

Vittorelli, Nina, Rodríguez de la Vega, Ricardo C, Snirc, Alodie, Levert, Emilie, Gautier, Valérie, Lalanne, Christophe, De Filippo, Elsa, Gladieux, Pierre, Guillou, Sonia, Zhang, Yu, Tejomurthula, Sravanthi, Grigoriev, Igor V, Debuchy, Robert, Silar, Philippe, Giraud, Tatiana, and Hartmann, Fanny E

Subjects
Biological Sciences, Ecology, Genetics, Biotechnology, Genes, Mating Type, Fungal, Reproduction, Ascomycota, Sordariales, Recombination, Genetic, Spores, Developmental Biology
Abstract

Recombination is often suppressed at sex-determining loci in plants and animals, and at self-incompatibility or mating-type loci in plants and fungi. In fungal ascomycetes, recombination suppression around the mating-type locus is associated with pseudo-homothallism, i.e. the production of self-fertile dikaryotic sexual spores carrying the two opposite mating types. This has been well studied in two species complexes from different families of Sordariales: Podospora anserina and Neurospora tetrasperma. However, it is unclear whether this intriguing association holds in other species. We show here that Schizothecium tetrasporum, a fungus from a third family in the order Sordariales, also produces mostly self-fertile dikaryotic spores carrying the two opposite mating types. This was due to a high frequency of second meiotic division segregation at the mating-type locus, indicating the occurrence of a single and systematic crossing-over event between the mating-type locus and the centromere, as in P. anserina. The mating-type locus has the typical Sordariales organization, plus a MAT1-1-1 pseudogene in the MAT1-2 haplotype. High-quality genome assemblies of opposite mating types and segregation analyses revealed a suppression of recombination in a region of 1.47 Mb around the mating-type locus. We detected three evolutionary strata, indicating a stepwise extension of recombination suppression. The three strata displayed no rearrangement or transposable element accumulation but gene losses and gene disruptions were present, and precisely at the strata margins. Our findings indicate a convergent evolution of self-fertile dikaryotic sexual spores across multiple ascomycete fungi. The particular pattern of meiotic segregation at the mating-type locus was associated with recombination suppression around this locus, that had extended stepwise. This association between pseudo-homothallism and recombination suppression across lineages and the presence of gene disruption at the strata limits are consistent with a recently proposed mechanism of sheltering deleterious alleles to explain stepwise recombination suppression.

Published
2023

6. Preservation of functionality, immunophenotype, and recovery of HIV RNA from PBMCs cryopreserved for more than 20 years

Author

Wayne B. Dyer, Kazuo Suzuki, Angelique Levert, Mitchell Starr, Andrew R. Lloyd, and John J. Zaunders

Subjects
cryopreservation, biobank, viability, immunophenotyping, HIV reactivation, T cell subsets, Immunologic diseases. Allergy, RC581-607
Abstract

BackgroundMany research laboratories have long-term repositories of cryopreserved peripheral blood mononuclear cells (PBMC), which are costly to maintain but are of uncertain utility for immunological studies after decades in storage. This study investigated preservation of cell surface phenotypes and in-vitro functional capacity of PBMC from viraemic HIV+ patients and healthy seronegative control subjects, after more than 20 years of cryopreservation.MethodsPBMC were assessed by 18-colour flow cytometry for major lymphocyte subsets within T, B, NK, and dendritic cells and monocytes. Markers of T-cell differentiation and activation were compared with original immunophenotyping performed in 1995/1996 on fresh blood at the time of collection. Functionality of PBMC was assessed by culture with influenza antigen or polyclonal T-cell activation, to measure upregulation of activation-induced CD25 and CD134 (OX40) on CD4 T cells and cytokine production at day 2, and proliferative CD25+ CD4 blasts at day 7. RNA was extracted from cultures containing proliferating CD4+ blast cells, and intracellular HIV RNA was measured using short amplicons for both the Double R and pol region pi code assays, whereas long 4-kbp amplicons were sequenced.ResultsAll major lymphocyte and T-cell subpopulations were conserved after long-term cryostorage, except for decreased proportions of activated CD38+HLA-DR+ CD4 and CD8 T cells in PBMC from HIV+ patients. Otherwise, differences in T-cell subpopulations between recent and long-term cryopreserved PBMC primarily reflected donor age-associated or HIV infection-associated effects on phenotypes. Proportions of naïve, memory, and effector subsets of T cells from thawed PBMC correlated with results from the original flow cytometric analysis of respective fresh blood samples. Antigen-specific and polyclonal T-cell responses were readily detected in cryopreserved PBMC from HIV+ patients and healthy control donors. Intracellular HIV RNA quantitation by pi code assay correlated with original plasma viral RNA load results. Full-length intracellular and supernatant-derived amplicons were generated from 5/12 donors, and sequences were ≥80% wild-type, consistent with replication competence.ConclusionsThis unique study provides strong rationale and validity for using well-maintained biorepositories to support immunovirological research even decades after collection.

Published
2024
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7. Measurement of circulating viral antigens post-SARS-CoV-2 infection in a multicohort study

Author

Abraham, Rachael, Ager, Arijan, Aguilar, Franchesca A., Ahmadi-Izad, Ghazal, Ahmed, Dilshad R., Alvarez, Alicarmen, Anderson, Blake, Asencios, Walter D., Atha, Mary, Beaty, Casey L., Bedi, Brahmchetna, Berry, Jasmine A., Boone, Donchel, Bower, Mary, Bremner, James D., Brent, Corbin, Brown-Smith, Ke'Ara, Bull, Rachel, Bush, Patricia A., Capo, Gustavo, Carl-Igwe, Kelechi, Chitadze, Calista, Chukwumerije, Nachi, Clyburn, Erna, Collins, Shelby, Costello, Julie, Couture, Grace, Craft, Angel, Cribbs, Sushma K., Cui, Xiangqin, Dandy, Annette, Rio, Carlos del, Jasarevic, Rijalda, Detelich, Joshua F., Dixon, Cartia, Dow, Jeanne, Doyle, D'Andrea, Elchommali, Jannah, Ibeawuchi, Carmel, Elsey, Imani, Fineman, Rebecca, Francis, Anyssa G., Franks, Nicole, Gallini, Julia, Gander, Jennifer C., Gray, Natalie, Grimes, Ash, Gutter, Evan, Han, Jenny E., Hang, Tina P., Harding, Jess, Hernandez, Liliana, Hewitt, Lauren N., Holloway, Carla, Hudgins, Alex F., Huerta, Christopher, Ifejika, Cynthia, Ingram, Ketteria D., Javia, Vidhi N., Jeter, Mykayla, Johnson, Brandi, Joseph, Yasha, Juarez, Monica, Kajan, Dana, Khalil, Lana, Kirkpatrick, Caitlin M., Kleinhenz, Dean, Kolailat, Imanii, Koumanelis, Athena, Koumanelis, Alexandra, Kozoman, Rebecca, Krishnan, Shilpa, Lainez, Jordi, Lawrence, Brianna, Lee, Matthew A., Leon, Jose D., Lew, Valerie, Lewis, Kennedy C., Litvack, Matthew, Maroney, Mara, Maier, Cheryl L., Makkaoui, Nour, Marconi, Vincent C., Martin, Christopher F., Martinez, Monica, Mbogo, Loice, McCaslin, Atuarra, McIntyre, Jerrod, Moanna, Abeer, Montoya, Miranda, Morales, Elena, Moran, Caitlin A., Morgan-Billingslea, Jan, Murray, Calista, Nelson, Roslin, Neuman, Robert B., Nguyen, Tran, Ofotokun, Ighovwerha, Ojemakinde, Elizabeth I., Ojoawo, Bukkie, Osinski, Eileen, Oviedo, Sofia, Panganiban, Bernadine, Paredes-Gaitan, Yolanda, Patzer, Rachel E., Pemu, Priscilla, Prude, Michael, Rahman, Kazi, Ramakrishnan, Grace, Rebolledo, Paulina A., Roberts, Marjorie, Robinson, Keysha, Rogers, Chantrice, Rouphael, Nadine G., Searles, Charles, Shah, Anand, Segall, Marni, Shaw, Renata M., Silva, Ruvina, Simpson, Cheryl, Simpson-Derrell, Krystal, Sirajud-Deen, Talib, Smith, Veronica E., Stringer, Andre, Stroud, Jacob, Suthar, Mehul S., Sylber, Cory, Sylvera, Ashley, Tanner, Tehquin, Teunis, Larissa J., Tolbert, Maliya, Thomas, Kodasha M., Thompson, Sierra G., Titanji, Kehmia, Toy, Christopher, Traenkner, Jessica, Truong, Alex, Unterberger, Kristen, Vaccarino, Viola, Varney, Kris, Vyas, Kartavya, Vyas, Kurt, Walker, Tiffany A., Walkow, Max, Wang, Dongli, Wesley, Tamara, Wiley, Zanthia, Wimberly, Erika, Winston, Juton R., Winter, Terra J., Wongtrakool, Cherry, Aikawa, Masanori, Alba, George A., Aung, Taing N., Baden, Lindsey, Baslet, Gaston, Bassett, Ingrid V., Bennett, Lindsey, Bhattacharyya, Shamik, Blazey-Martin, Deborah, Buring, Julie, Cagnina, Rebecca E., Chen, Li Qing, Clark, Cheryl R., Cohen, Pieter, Collier, Ai-Ris, Czeisler, Charles, Duffy, Elizabeth, Estill, Peter, Fong, Tamara, Gay, Elizabeth, Ghamloush, Maher, Ginns, Leo C., Haack, Monika, Haas, Jennifer, Hamburg, Naomi, Hauser, Kristine S., John, Janice, Jordan, Michael, Juelg, Boris D., Kanjilal, Diane G., Kim, Arthur Y., Klerman, Elizabeth B., Kobayashi, Misaki ., Kogelman, Laura, Lamas, Daniela, Levy, Bruce D., Levy-Carrick, Nomi, Lewis, Gregory, Maley, Jason H., Manson, JoAnn, Marathe, Jai G., Mullington, Janet M., O'Connor, George T., Ojikutu, Bisola, Perlis, Roy, Quintana, Yuri, Redline, Susan, Remis, Elijah J., Rosand, Jonathan, Sesso, Howard D., Shaughnessy, Lynn, Shepherd, Fitzgerald M., Solomon, Scott, Sparks, Jeffrey A., Spencer, Lia L., Stephenson, Kathryn, Systrom, David, Thomas, Robert J., Min Thu, Phyo Phyo, Ticotsky, Amberly, Torres, Robert, Wallace, Zachary S., Walt, David, Ward, Honorine D., Washko, George, Whittelsey, Maureen, Wiener, Rebecca, Williams, Charles T., Xerras, Dean, Zhang, Haihua, Zionts, Danielle, Armstrong, Donna, Binkley, Susan E., Blackwell, Kenneth, Brown, Todd, Carton, Thomas W., Causey, Annalia, Cook, Felice, Daniel, Casey L., Datri, Paula, Domingo, Julio, Donahue, Conner, Eady, Maitlyn, Edberg, Jeffrey, Erdmann, Nathaniel, Fuloria, Jyotsna, Garcia-McClaney, Noah, Garner, Melissa, Gillespie, Mark, Gray, Brandon, Hagensee, Michael, Hall, Wanda, Hansel, Jamie, Hart, Cady, Hebson, Camden L., Hidalgo, Bertha, Holtzapfel, Kaylen, Jinright, Alexis, Judd, Suzanne E., Kennedy, Teri, Kirkwood, Leigh, Leggio, Cathryn, Levitan, Emily B., Maier, Megan, McCormack, Patricia, Miele, Lucio, Mitchell, Kevin, Montgomery, Aoyjai, Peralta-Carcelen, Myriam, Perkins, Allen, Pilco, Juan P., Powell, Leigh, Shevin, Rachael, Skipworth, Sidney, Spurgeon, Leah, Sutherland, Erica, Tita, Alan T., Trauth, Amber, Trotter, Siobhan, Van Deerlin, Alexander, Ware, Gregory, Weiser, Sharon, Wilson, Rosanne, Woodruff, Dana, Wu, Jing, Young, Madeline, Alemu, Mhret, Anderson, Jordan, Ashktorab, Hassan, Brim, Hassan, Chang, Linda, Chauhan, Mahak, Cho, Sung, Durrani, Saima, Gentil, Monique P., Goodman, Karli, Laiyemo, Adeyinka O., Lanke, Gandi, Lebron, Ralph, Maheshwari, Anurag, Mehari, Alem, Nezamloo, Ali, Ngwa, Julius, Njoku, Noelle, Ok, Jina, Sherif, Zaki A., Solemani, Akbar, Thuluvath, Paul, To, Chau, Spikes, Leslie A., James, Judith A., Luciano Roman, Carlos A., Chow, Dominic C., Marshall, Gailen D., Dickinson, John D., Hoover, Susan E., Warren, David E., Emery, Ivette F., Sukhera, Fatima I., Rosen, Clifford J., Greenway, Frank L., Hodder, Sally L., Shikuma, Cecilia M., VanWagoner, Timothy M., Bardes, James M., Kirwan, John P., Wood, Jeremy P., Whiteheart, Sidney W., Shellito, Judd, Roelke, Theresa, Black, Lora, Tjarks, Brian, Fonseca, Vivian, Gupta, Shaveeta, Longo, Michele, Yang, Mei, MarGangcuangco, Louis, Bengtson, Charles, Castro, Mario, Howard, Theresa, Garvy, Beth, Simmons, Christopher, Garla, Vishnu, Kuebler, Joy, Nandi, Utsav, Vasey, Andrew, Bogie, Amanda, Scott, James, Frontera, Sigrid Perez, Bagur, Jorge Santana, Dominique-Villanueva, Daphne, Juskowich, Joy, Reece, Rebecca, Sarwari, Arif, Aponte-Soto, Lisa, Adams, Dara, Baker, Aileen, Barbera, Sunni, Basu, Sanjib, Bleasdale, Susan, Bolliger, Dawn, Boyd, Andrew D., Boyineni, Jerusha, Breiter, Taylor, Brown, Daniel, Buhimschi, Irina A., Carrithers, Michael D., Certa, Marta, Chalamalla, Rashmika, Chebrolu, Praneeth, Chestek, David, Chessier, Erica, Cook, Judith A., Cranford, Savannah, Curry, Hannah L., Darbar, Dawood, Dasgupta, Raktima, Blakley, Felicia Davis, DeLisa, Julie A., Del Rios, Marina, Diaz, Maya Z., Diviak, Kathleen R., Dixon, Jennifer, Donlon, Meghan F., Donohue, Sarah E., Dworkin, Mark S., Edmonds, Sherrie, Ellison, Angela, Everett, Emily, Flanigan, Clarie, Freedman, Michael B., Gale, Lisa, Gerald, Lynn B., Giles, Wayne H., Gordon, Howard S., Hafner, John, Hammad, Bayan, Hanson, Keith A., Harris, Pastor C., Hartwig, Kimberly, Hasek, Sharon, Hasse, Wendy, Hendrickson, Monica, Hobbs, Brianna, Hryniewicka, Martyna, Hammerl, Savannah, Hutton, Robert, Ibanez, Alejandra L., Illendula, Sai D., Ismail, Nahed, Jain, Akash, Jennette, Kyle J., Kadubek, Grace, Kent, Denise, Kotini-Shah, Pavitra, Kelly, Sara W., Kent, Denise A., Kim, Keri S., Kindred, Elijah, Klein, Jonathan D., Krishnan, Jerry A., Large, Lucia, Lash, James ., Lin, Janet Y., Lu, Jun, Mahamed, Abeer M., Maholovich, Phoebe, Malchenko, Sergey, Martinez, Miriam, Mauntel-Medici, Cammeo, Madineni, Abhigna, McCauley, Mark, Menchaca, Martha, Mermelstein, Robin, Moreno, David J., Morrissy, Liam, Muramatsu, Naoko, Musick, Hugh, Noland, Seth, Norwick, Lourdes, Novak, Richard M., Olds, Lela, Ortiz, Marilyn, Patel, Khushboo, Perez, Nicolas L., Pliskin, Neil H., Pope, Sam, Prabhakar, Bellur S., Prasad, Bharati, Predki, Barbara, Prendergast, Heather M., Quigley, John G., Ramchandran, Ramaswamy, Ramirez, Ana, Rappe, Sarah, Rehman, Jalees, Rolon, Cesar, Rowley, Matthew, Rudraraju, Gowrisree, Rutherfoord, Melissa, Sader, Samer B., Sculley, Jennifer A., Smith-Mack, Jerisha, Swearingen, Peyton, Stewart de Ramirez, Sarah A., Sudhindra, Praveen, Sun, Jun, Tartt, Nancy, Terlinde, Tracy, Thompson, Tiffany, Vanden Hoek, Terry L., Kelly, Sara Warfield, Villanueva, Laura, Welter, Hannah, Woolley, Brittany, Yazici, Cemal, Charney, Alexander W., Kovatch, Patricia, Merad, Miriam, Nadkarni, Girish N., Wisnivesky, Juan P., Aberg, Judith A., Ascolillo, Steven, Assenso, Esther, Bagiella, Emilia, Bartram, Logan, Becker, Jacqueline, Beckmann, Noam D., Bendl, Ashley, Chen, Benjamin K., Civil, Alyssa, Dhar, Kaberi, Evo-Ortega, Lorraine, Fierer, Daniel, Gallagher, Emily J., Garcia-Sastre, Adolfo, Gnjatic, Sacha, Guliyeva, Sabina, Harvey-Ingram, Lori, Herrera-Moreno, Julia, Hill, Matthew, Horowitz, Carol R., Jackson, Rachel, Kastrat, Din, Lala-Trindade, Anu, Lin, Jenny, Macaluso, Nick, Marcon, Kathryn, Meyer, Dara, Morinigo, Janice, Natelson, Benjamin H., Nussenzweig, Maya, Padua, Tiffani, Putrino, David, Quazi, Nawreen, Ramos, Michelle, Richardson, Lynne, Russo, Scott, Seifert, Alan C., Serri, Abdullah, Walker, Jordan, Yee, Michell, Adolphi, Natalie L., Alekhina, Natalya, Archuleta, David A., Barlocker, Jackson, Bateman, Lucinda, Bradfute, Steven B., Brito, Rebecca, Bryan, Tanner W., Buck, Kaitlin E., Davis, Debra, Deakyne Davies, Sara J., Decker, Lauren A., Elifritz, Jamie, Erlandson, Kristine M., Facelli, Julio C., Fudge, Harrison Z., Tran, Huong, Pitch, Chloe, Feuerriegel, Elen M., Ford, Isaac, Friedman, Naomi P., Garcia-Soberanez, Noella D., Gardner, Edward M., Stringham, Caitlyn, Ling, Leah, Gebremariam, Tewodros H., Gentry, Frederick D., Gouripeddi, Ramkiran, Graham, Paige, Gronert, Eve G., Harkins, Michelle S., Hawkins, Kellie L., Hess, Rachel, Johnny, Jace D., Johnson, Brandon M., Jolley, Sarah E., Lloyd, Jennifer, Ludwig, Katelyn R., Martinez, Noah I., McCandless, Sean A., Montoya, Lorenzo A., Oakes, Judy L., Parada, Alisha N., Quinn, Davin K., Raissy, Hengameh, Ramos, Alfredo, Reid, Kayleigh M., Reusch, Jane E., Sheehan, Elyce B., Sokol, Ron J., Treacher, Irena S., Trinity, Joel D., Truong, Dongngan T., West, Shelby C., Molden, Joie, Sharareh, Nasser, Weaver, Lisa J., Spivak, Adam M., Brown, Jeanette P., Shah, Kevin S., Pace, Laura A., Scholand, Mary Beth, Velinder, Matt, Cortez, Melissa, Morimoto, Sarah Shizuko, Vernon, Suzanne D., Lu, Yue, Owen, Megan, Hermansen, Jessica A., Lindsay, Ashton M., Donohue, Dagny K., Garg, Lohit, Wodushek, Thomas, Higgins, Janine, Lockie, Tim, Brightman, Marisa, Thurman, Brook, Powell, Jenny M., Freston, Dylan C., Medina, Juliemar C., Aguirre, Bailee, Anderson, Jeff, Bair, Tami, Bosh, Lindsay, Evans, Lorlie, Garrett, Chase, Harris, Dixie, Herrera, Katherine, Horne, Benjamin D., Juan, James, Knight, Stacey, Knowlton, Kirk, Leither, Lindsay, Maestas, Heather, May, Heidi T., Najarian, Gabriel, Woller, Scott C., Zubal, Shyanne, Jensen, McKenna M., Webb, Tiaura, Iverson, Leslie, Ayache, Mirna, Baloi, Alexis, Barnboym, Emma, Boldt, Nicholas, Bukulmez, Hulya, Chesnick, Hailey, Conrad, Ann, Consolo, Mary, Curtis, Lynette, D’anza, Brian, DiFrancesco, Kathryn, Edminston, Marissa, Eteshola, Ebenezer, Gallagher, Michelle, Gibson, Kelly S., Gordesky, Larraine, Greenwood, Carla, Haghiac, Maricela, Harris, Paul, Hernandez, Carla, Iqbal, Shirin, Kaelber, David C., Kaufman, Elizabeth S., Kennedy, Olivia, Labbato, Danielle, Lengu, Ketrin, Levert, Antonio, Levin, Jennifer, Lowenthal, Rebecca, Mackin, Bridget, Malakooti, Shahdi K., McComsey, Grace A., Minium, Judy, Mouchati, Christian, Oleson, Christine, Pearman, Ann, Hershey, Morgan, Rivera, Amanda, Rodgers, Michael, Rodgers, Theresa, Roy, Arnab, Russ, Kris, Scott, Sarah, Sheth, Niyati, Singer, Nora G., Smith, Beth, Smith, Cheryl, Stancin, Terry, Temple, Daniel, Tribout, Megan, Weinberger, Elisheva, Zhang, David, Zisis, Sokratis N., Atieh, Ornina, Yendewa, George, Baissary, Jhony, Pettinato, KImberly, Lim, Joaquin, Jacob, Joshua, Adams, Cara, Tejani, Viral, Algren, Heather A., Alicic, Radica, Baxter, Joni, Brennan, Conor, Caudill, Antonina, Chen, Peter, Chopra, Tananshi, Chu, Helen Y., Del Alcazar, James, Duven, Alexandria M., Edmark, Rick, Emerson, Sarah, Goldman, Jason D., Gutierrez, Vanessa, Hadlock, Jennifer, Harteloo, Alex, Heath, James R., Hood, Susan, Jackman, Susan, Kaneko, John, Kemp, Megan, Kim, Christina, Kuykendall, Kelli, Li, Sarah, Logue, Jennifer K., Magis, Andrew T., Manner, Paula, Mason, Carly, McCaffrey, Kathryn, McDonald, Connor, McDonald, Dylan, Murray, Kim M., Nackviseth, Callista, Nguyen, Helen, Parimon, Tanyalak, Poussier, Rachel, Rowen, Lee, Satira, Richard, Torbati, Sam, Tuttle, Katherine R., Wallick, Julie A., Yuan, Dan, Watanabe, Kino, Wilcox, Lauren E., Contreras, Fatima, Dahlke, Lea, Gudipudi, Lasya, Modes, Matthew, Muttera, Nicole, Salinas, Nancy, Tadeo, Josie, White, Shane, Alvarado, Stephanie, Anderson, Reed, Arellanes, Azaneth, Barajas, Rose A., Chauhan, Suneet P., Clarke, Geoffrey D., Farner, Cheryl E., Fischer, Melinda S., Goldberg, Mark P., Hasbani, Keren, Hastings, Gabrielyd, Heard, Patricia, Herrera, Italia, Infante, Edgar, Johnson, Hillary, Jones, Johnnie, Kellogg, Dean L., Kraig, Ellen, Longoria, Lisa, Nambiar, Anoop M., Okafor, Emeka, Paredes, Claudia C., Patterson, Thomas F., Patterson, Jan E., Pinones, Alexis, Potter, Jennifer S., Reeves, W.B., Saade, George R., Salehi, Marzieh, Scholler, Irma, Seshadri, Sudha, Shah, Dimpy P., Shah, Pankil, Sharma, Kumar, Sharma, Kavita, Soileau, Bridgette, Solis, Pamela, Stoebner, Carmen, Sullivan, Michael, Taylor, Barbara S., Tragus, Robin, Tsevat, Joel, Verduzco-Gutierrez, Monica, Ahuja, Neera, Blish, Catherine A., Blomkalns, Andra L., Bonilla, Hector, Brotherton, Richard, Clinton, Kimberly, Dingankar, Vaidehi, Geng, Linda N., Go, Minjoung, Haddad, Francois, Jagannathan, Prasanna, Jamero, Christopher, Jee, Kathryn, Jia, Xiaolin K., Khurana, Naresh, Kumar, Andre, Maldonado, Yvonne, Miglis, Mitchell G., O'Conor, Ellen, Olszewski, Kelly, Pathak, Divya, Quintero, Orlando, Scott, Jake, Singh, Upinder, Urdaneta, Alfredo E., Utz, Paul J., Varkey, Mary R., Saperia, Corey, Autry, Lynn, Bime, Christian, Borwege, Sabine, Copeland, Jacquelynn, DiLise-Russo, Marjorie, Ernst, Kacey C., Esquivel, Denise R., Fadden, Susan, Gomez, Isaias, Grischo, Garrett, Hansen, Lillian, Harris, David T., Harris, Stefanie, Hartley, William, Hernandez, Michael, Hillier, Leah, Hsu, Harvey, Hughes, Trina, Ismail, Hira, Iusim, Stephanie, James, Michelle, Kala, Mrinalini, Karnafel, Maria, Kim, Daniel, Knox, Kenneth S., Koleski, Alison, LaFleur, Bonnie, Lambert, Brenda, LaRue, Sicily, Lee-Iannotti, Joyce K., Lieberman, David, Lutrick, Karen, Merchant, Nirav, Morton, Christopher, Mosier, Jarrod M., Murthy, Ganesh, Nikolich, Janko Z., Olorunnisola, Toluwanimi, Parthasarathy, Sairam, Peralta, Jeanette, Pilling, William, Pogreba-Brown, Kristen, Reiman, Eric M., Rischard, Franz P., Ryan, Lee T., Smith, Terry, Snyder, Manuel, Soto, Francisco, Subbian, Vignesh, Suhr, Kyle, Unzek, Samuel, Vadovicky, Sheila, Velarde, Deanna, Veres, Sharry, Wilson, Cathleen, Anderson, Grace, Anglin, Khamal, Argueta, Urania, Asare, Kofi, Buitrago, Melissa, Chang Song, Celina, Clark, Alexus, Conway, Emily, Deeks, Steven G., Del Castillo, Nicole, Deswal, Monika, Durstenfeld, Matthew S., Eilkhani, Elnaz, Eun, Avery, Fehrman, Emily, Figueroa, Tony, Flores, Diana, Grebe, Halle, Henrich, Timothy J., Hoh, Rebecca, Hsue, Priscilla, Huang, Beatrice, Ibrahim, Rania, Kelly, John D., Kerbleski, Marian, Kirtikar, Raushun, Lew, Megan T., Lombardo, James, Lopez, Monica, Luna, Michael, Marquez, Carina, Martin, Jeffrey N., Munter, Sadie, Ngo, Lynn, Peluso, Michael J., Pineda-Ramirez, Jesus, Rhoads, Kim, Rodriguez, Antonio, Romero, Justin, Ryder, Dylan, So, Matthew, Somsouk, Ma, Tai, Viva, Tran, Brandon, Uy, Julian, Valdivieso, Daisy, Verma, Deepshika, Williams, Meghann, Zamora, Andhy, Newman, Lisa T., Abella, Julie, Barnette, Quinn, Bevc, Christine, Beverly, Jennifer, Ceger, Patricia, Croxford, Julie, Enger, Mike, Fain, Katie, Farris, Tonya, Hanlon, Sean, Hines, David, Johnson-Lawrence, Vicki, Jordan, Kevin, Lefebvre, Craig, Linas, Beth, Luukinen, Bryan, Mandal, Meisha, McKoy, Nikki J., Nance, Susan, Pasquarelli, Demian, Quiner, Claire, Sembajwe, Rita, Shaw, Gwendolyn, Thornburg, Vanessa, Tosco, Kendall, Wright, Hannah, Gross, Rachel S., Hochman, Judith S., Horwitz, Leora I., Katz, Stuart D., Troxel, Andrea B., Adler, Lenard, Akinbo, Precious, Almenana, Ramona, Aschalew, Malate, Balick, Lara, Bello, Ola, Bhuiyan, Sultana, Blachman, Nina, Branski, Ryan, Briscoe, Jasmine, Brosnahan, Shari, Bueler, Elliott, Burgos, Yvette, Caplin, Nina, Chaplin, Domonique, Chen, Yu, Cheng, Shen, Choe, Peter, Choi, Jess, Chung, Alicia, Church, Richard, Cobos, Stanley, Croft, Nakia, Irving, Angelique Cruz, Del Boccio, Phoebe, Díaz, Iván, Divers, Jasmin, Doshi, Vishal, Dreyer, Benard, Ebel, Samantha, Esquenazi-Karonika, Shari, Faustin, Arline, Febres, Elias, Fine, Jeffrey, Fink, Sandra, Freeland, Catherine, Frontera, Jennifer, Gallagher, Richard, Gonzalez-Duarte, Alejandra, Gross, Rachel, Hasson, Denise, Hill, Sophia, Hochman, Judith, Horwitz, Leora, Hossain, Jennifer, Islam, Shahidul, Jean, Christina Saint, Johnson, Stephen, Kansal, Neha, Katz, Stuart, Kenney, Rachel, Kershner, Tammy, Kewlani, Deepshikha, Kwak, Judy, Lamendola-Essel, Michelle F., Laury, Sarah, Laynor, Gregory, Lei, Lei, Leon, Terry, Linton, Janelle, Logan, Max, Malik, Nadia, Mamistvalova, Lia, Mandel, Hannah, Maranga, Gabrielle, Mattoo, Aprajita, Mei, Tony, Mendelsohn, Alan, Mercier, Emmanuelle, Vernetti, Patricio Millar, Miller, Marc, Mitchell, Maika, Moreira, Andre, Mudumbi, Praveen C., Nahin, Erica, Nair, Nandini, Nekulak, Joseph, Owens, Kellie, Parent, Brendan, Patibandla, Nandan, Petrov, Peter, Postelnicu, Radu, Pratt, Francesca, Randall, Isabelle, Rao, Priyatha, Rapkiewicz, Amy, Rizzo, JohnRoss, Rosas, Johana, Rose, Chelsea, Saint-Jean, Christina, Santacatterina, Michelle, Shah, Binita, Shaukat, Aasma, Simon, Naomi, Simsir, Aylin, Stinson, Miranda, Tang, Wenfei, Tatapudi, Vasishta, Thawani, Sujata, Thomas, Mary, Thorpe, Lorna, Tom, MeeLee, Treiha, Ethan, Troxel, Andrea, Truong, Jennifer, Udosen, Mmekom, Valencia, Carlos, Velazquez-Perez, Jessica, Vernetti, Patricio M., Vidal, Crystal, Viswanathan, Anand, Willerford, Amy, Williams, Natasha, Wong, Crystal, Wood, Marion J., Wuller, Shannon, Yin, Shonna H., Young, Chloe, Zaretsky, Jonah, Zavlunova, Susanna, Ahirwar, Shreya, Ahmed, Shifa, Ainsworth, Layne L., Atchley-Challenner, Rachel, Avilach, Paul, Balan, Trisha T., Benik, Nicholas, Benoit, Barbara, Bind, Marie-Abèle C., Bonaventura, William J., Boutin, Natalie, Brion, Beverly, Cagan, Andrew, Cai, Tianrun, Cao, Tingyi, Castro, Victor M., Cerretani, Xander R., Chan, James G., Cheng, David, Chibnik, Lori B., Ciriello, Mark, Costenbader, Karen, Dimitrov, Dimitar S., Estiri, Hossein, Fayad, Maria, Feldman, Candace H., Foulkes, Andrea, Gainer, Vivian, Ghosh, Bhaswati, Gollub, Randy, Guan, Zoe, Harris, Alan, Helmer, Karl, Hendrix, Andrew, Holzbach, Ana, Huang, Weixing, Karlson, Elizabeth W., Kaufman, Daniel, Keogh, Diane, Kerr, James D., Klann, Jeffrey G., Krishnamoorthy, Aparna, Lasky-Su, Jessica A., Liao, Katherine P., MacFadden, Doug, Maram, Anupama, Martel, Megan W., Mendis, Michael, Metta, Reeta, Monteiro, Jonathan, Morales, Eduardo, Morse, Richard E., Murphy, Shawn, Nazaire, Marc-Danie, Neils, Gregory, Nguyen, Amber N., Norman, James, Paik, Henry H., Pant, Deepti, Park, HeeKyong, Rabideau, Dustin J., Reeder, Harrison T., Rossi-Roh, Kathleen, Santacroce, Leah M., Schlepphorst, Katherine, Schulte, Carolin, Selvaggi, Caitlin A., Shinnick, Daniel J., Simons, William, Simpson, Lynn A., St. Jean Flanders, Mary L., Strasser, Zachary, Thakrar, Mansi R., Thaweethai, Tanayott, Thorn, Madeleine, Trewett, Philip, Van Fleet, Dustin, Wagholikar, Kavishwar B., Wang, Taowei D., Wattanasin, Nich, Weber, Griffin, Williams, Michael A., Zhang, Ren Zhe, Cicek, Mine, Chang, Nancy, Wirkus, Samantha, Zahnle, Nicole, Flotte, Thomas J., Frisch, Erika, Boysen, Erik M., Welch, Gary, Akintonwa, Teresa, Blancero, Frank, Brown, Heather-Elizabeth, Carmilani, Megan, Cerda, Marta, Clash, Victor H., Copeland, Debra, Hall, Yvonka, kevin kondo, Lerma, Lydia, Lindsay, Jacqui, Marti, Heather, Maughan, Christine, Minor, Tony, Taylor, Brittany, Vincent, Hyatt, Zissis, Mike, Anderson, Brett, Bardhan, Sujata, Castro-Baucom, Leah, Chisolm, Deena, Corchado, Claudia, Damian, April Joy, Daniel, Casey, DasGupta, Soham, Dehority, Walter, Feldman, Candace, Fessel, Josh, Rosas, Lisa Goldman, Horowitz, Carol, Khullar, Dhruv, Lopez, Keila, McDonald Pinkett, Shelly, Myaskovsky, Larissa, Regino, Lidia, St John Thomas, Gelise, Stewart de Ramirez, Sarah, Vangeepuram, Nita, Walden, Anita, Williams, Neely, Yin, Shonna, Burton, Phoebe, Catallozzi, Marina, Clark, Cheryl, Dworetzky, Beth, Edwards, Belinda, Ferrer, Robert L., Judd, Suzanne, Rothman, Russell, Wagner, Laura, Wallace, Ann, Adams, Sonseeahray (Ray), Aragon, Leyna, Bander, Bryan, Bishof, Karyn, Brooks, Gail, Carignan, Etienne, Coombs, Krista, Davis, Hannah, Blakley, Felicia D., Diggs, Marissa, Brown, Heather E., Favors, Umar, Fields, Whitney, Fisher, Liza, Fitzgerald, Megan, Gaffney, Alicia, Witvliet, Margot Gage, Garcia, Roberto, Gustafson, Tyler, Guthe, Nick, Holmes, Verna, Hornig, Mady, Hornig, Maxwell, Jefferson, Wendy, Kochis, Nancy, Kondo, Kevin, Lam, Julie, Lawrence, Fadwa, Letts, Rebecca, Lewis, Juan, Lopez, Silcia, Martinez, Thomas, McCorkell, Lisa, McGrath, Rebecca, Minor, Thomas T., Moore, Charita, Nguyen, Kian, Nichols, Lauren, O'Brien, Lisa, Olson, Holly, Peddie, Aimee, Perlowski, Alice, Lorenzo, Elizabeth P., Prentiss, Lisa, Raytselis, Nadia, Rochez, Nitza, Rockwell, Megan, Rutter, Jacqueline, Seibert, Elle, Sekar, Anisha, Smith, Chimere, Stiles, Lauren, Taylor, Emily, Thompson, Julie, Trapp, Stephen, Valdiva, Stephen, Wilensky, Rochelle, Williams, Melissa, Dawson, Kay W., Wylam, Andrew, Swank, Zoe, Borberg, Ella, Chen, Yulu, Senussi, Yasmeen, Chalise, Sujata, Manickas-Hill, Zachary, Yu, Xu G., Li, Jonathan Z., Alter, Galit, Kelly, J. Daniel, Goldberg, Sarah A., Talla, Aarthi, Li, Xiaojun, Skene, Peter, Bumol, Thomas F., Torgerson, Troy R., Czartoski, Julie L., McElrath, M. Juliana, and Walt, David R.

Published
2024
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8. 'ALERT FOR THE NEIGHBOURS': NEGOTIATING MUSLIM (NON‐)REPRESENTATIONS IN AN EAST GERMAN CITY

Author

Katrin Schade, Josca Levert, Ulrike Rebettge, Janne Bergmann, Lisa Röder, and Marlene Scherer

Subjects
negotiation processes, representation, places of prayer, backyard mosques, east germany, Cities. Urban geography, GF125, Urban groups. The city. Urban sociology, HT101-395
Abstract

Whenitcomes toMuslimrepresentationalpractices inEuropean cities, fears, criticism, and scepticism emerge in the public discourse. The aim of this paper is to investigate how Muslim places of prayer are negotiated. By means of a multi‐method approach, we investigate how Muslim places of prayer in Leipzig become visible. We further question the media’s role in local negotiation processes. The analysis shows that the diverse Muslim places of prayer rather resemble ‘backyard mosques’ due to financial and structural hurdles as well as conflict avoidance. However, some inter‐ viewees explain their satisfaction with the places of prayer, which are places of migration and thus social networks, especiallyforthefirstgeneration.Due toitsEastGermanpast, Leipzig is experiencing a partly catch‐up debate regarding the arrival of Islam through migration. But, religion as culture is giving‐way to individual local practices of repre‐ sentation of diverse Muslim people that could be picked up more strongly by the media.

Published
2024
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9. Off We Go into the Wild Blue Yonder

Author

LeVert, Connie

Subjects
Arts, visual and performing, Literature/writing
Abstract

A helicopter with two men onboard landed upside down in Poorfish Lake, in what is now Nunavut, on July 15, 1969. The pilot died of a heart attack in flight. [...]

Published
2023

11. The Role of Islamic Beliefs in Facilitating Acceptance of Cancer Diagnosis

Author

Amina Benidir, Marie-Josée Levert, and Karine Bilodeau

Subjects
cancer, ethnic minorities, Arab Muslims, couple, religious beliefs, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Although survival rates for patients with cancer have increased, this disease continues to affect couples significantly. Religion and culture seem to be part of the therapeutic process for people with cancer. Despite the abundance of the Arab Muslim community in Western countries, there is a lack of documented data on Arab Muslim couples experiencing cancer. A simple exploratory qualitative study was conducted through semi-structured interviews on six married couples (n = 12) identifying with the Arab Muslim culture and being affected by cancer. An iterative data analysis was performed. Results were reported under the following themes: accepting illness through coping strategies provided by Muslim religious beliefs and practices, experiencing problems with the expression of needs and feelings within the couple, experiencing closeness within the family, and experiencing illness in the hospital setting as Muslims. Our results show that Islamic beliefs can facilitate acceptance of a cancer diagnosis. It is also noted that religion seems to unite spouses in supporting each other and maintaining hope in a difficult context. Communication issues may persist between a couple due to stressors related to cancer. The results of this study could raise awareness about the importance of exploring religious and spiritual beliefs when supporting couples affected by cancer.

Published
2023
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19. Stepwise recombination suppression around the mating-type locus in an ascomycete fungus with self-fertile spores.

Author

Nina Vittorelli, Ricardo C Rodríguez de la Vega, Alodie Snirc, Emilie Levert, Valérie Gautier, Christophe Lalanne, Elsa De Filippo, Pierre Gladieux, Sonia Guillou, Yu Zhang, Sravanthi Tejomurthula, Igor V Grigoriev, Robert Debuchy, Philippe Silar, Tatiana Giraud, and Fanny E Hartmann

Subjects
Genetics, QH426-470
Abstract

Recombination is often suppressed at sex-determining loci in plants and animals, and at self-incompatibility or mating-type loci in plants and fungi. In fungal ascomycetes, recombination suppression around the mating-type locus is associated with pseudo-homothallism, i.e. the production of self-fertile dikaryotic sexual spores carrying the two opposite mating types. This has been well studied in two species complexes from different families of Sordariales: Podospora anserina and Neurospora tetrasperma. However, it is unclear whether this intriguing association holds in other species. We show here that Schizothecium tetrasporum, a fungus from a third family in the order Sordariales, also produces mostly self-fertile dikaryotic spores carrying the two opposite mating types. This was due to a high frequency of second meiotic division segregation at the mating-type locus, indicating the occurrence of a single and systematic crossing-over event between the mating-type locus and the centromere, as in P. anserina. The mating-type locus has the typical Sordariales organization, plus a MAT1-1-1 pseudogene in the MAT1-2 haplotype. High-quality genome assemblies of opposite mating types and segregation analyses revealed a suppression of recombination in a region of 1.47 Mb around the mating-type locus. We detected three evolutionary strata, indicating a stepwise extension of recombination suppression. The three strata displayed no rearrangement or transposable element accumulation but gene losses and gene disruptions were present, and precisely at the strata margins. Our findings indicate a convergent evolution of self-fertile dikaryotic sexual spores across multiple ascomycete fungi. The particular pattern of meiotic segregation at the mating-type locus was associated with recombination suppression around this locus, that had extended stepwise. This association between pseudo-homothallism and recombination suppression across lineages and the presence of gene disruption at the strata limits are consistent with a recently proposed mechanism of sheltering deleterious alleles to explain stepwise recombination suppression.

Published
2023
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20. Upfront resection versus no resection of the primary tumor in patients with synchronous metastatic colorectal cancer: the randomized phase 3 CAIRO4 study conducted by the Dutch Colorectal Cancer Group and the Danish Colorectal Cancer Group

Author

van der Kruijssen, D.E.W., primary, Elias, S.G., additional, van de Ven, P.M., additional, van Rooijen, K.L., additional, Lam-Boer, J. ’t, additional, Mol, L., additional, Punt, C.J.A., additional, Sommeijer, D.W., additional, Tanis, P.J., additional, Nielsen, J.D., additional, Yilmaz, M.K., additional, Van Riel, J.M.G.H., additional, Wasowiz-Kemps, D.K., additional, Loosveld, O.J.L., additional, van der Schelling, G.P., additional, de Groot, J.W.B., additional, van Westreenen, H.L., additional, Jakobsen, H.L., additional, Fromm, A.L., additional, Hamberg, P., additional, Verseveld, M., additional, Jaensch, C., additional, Liposits, G.I., additional, van Duijvendijk, P., additional, Hadj, J. Oulad, additional, van der Hoeven, J.A.B., additional, Trajkovic, M., additional, de Wilt, J.H.W., additional, Koopman, M., additional, Vincent, Jeroen, additional, Wegdam, Johannes A., additional, Haberkorn, Brigitte C.M., additional, van der Harst, Erwin, additional, Hendriks, Mathijs P., additional, Schreurs, W.H. (Hermien), additional, Cense, Huib A., additional, Rietbroek, Ron C., additional, Gier, Marie-José de, additional, de Widt-Levert, Louise M., additional, van Breugel, Edwin A., additional, de Vos, Aad I., additional, Brosens, Rebecca P.M., additional, Doornebosch, P.G., additional, de Jongh, Felix E., additional, Vles, Wouter J., additional, den Boer, Marien O., additional, Leijtens, Jeroen W.A., additional, Gelderblom, A.J. (Hans), additional, Peeters, Koen C.M.J., additional, Kuenen, Bart C., additional, Pultrum, Bareld B., additional, van Dodewaard-de Jong, Joyce M., additional, Consten, Esther C.J., additional, van de Wouw, A.J. (Yes), additional, Konsten, J.L.M., additional, Hoekstra, R., additional, Lutke Holzik, Martijn F., additional, Vos, Allert H., additional, van Hoogstraten, M.J., additional, Schlesinger, Nis H., additional, Creemers, Geert-Jan, additional, de Hingh, Ignace H.J.T., additional, Kjær, Monica L., additional, Petersen, Lone N., additional, Seiersen, Michael, additional, Altaf, Rahim, additional, van Cruijsen, Hester, additional, HessL, Daniël A., additional, van Leeuwen-Snoeks, obke L., additional, Pronk, Apollo, additional, Baeten, Coen I.M., additional, van der Deure, Wendy M., additional, Bosscha, Koop, additional, Schut, Heidi, additional, Leclercq, W.K.G., additional, Simkens, L.H.J., additional, Reijnders, Koen, additional, van Arkel, Kees, additional, van Grevenstein, W.M.U. (Helma), additional, van de Ven, Anthony W.H., additional, Vuylsteke, Ronald J.C.L.M., additional, Kuijer, Philomeen, additional, Bakker, Sandra D., additional, Goei, Hauwy, additional, Helgason, Helgi H., additional, van Acker, Gijs J.D., additional, Temizkan, Mehmet, additional, van Tilburg, Marc W.A., additional, Gerhards, Michael F., additional, Kerver, E.D., additional, Gootjes, Elske, additional, Nieboer, Peter, additional, Bleeker, Wim A., additional, and Vink, G.R., additional

Published
2024
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22. Evidence of Filamin A loss of solubility at the prodromal stage of neuropathologically-defined Alzheimer’s disease

Author

Etienne Aumont, Cyntia Tremblay, Stéphanie Levert, David A. Bennett, Frédéric Calon, and Nicole Leclerc

Subjects
Filamin A, Alzheimer’s disease, post-mortem, taupathy, neuropathology, Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571
Abstract

IntroductionAlzheimer’s disease (AD) is a multifactorial disorder diagnosed through the assessment of amyloid-beta (Aβ) and tau protein depositions. Filamin A (FLNA) could be a key partner of both Aβ and tau pathological processes and may be an important contributor to AD progression. The main aim of this study was to describe the differences in FLNA levels across clinicopathologic groups.MethodsFrom parietal cortex samples of 57 individuals (19 with no cognitive impairment (NCI), 19 mild cognitively impaired (MCI) and 19 with dementia) from the Religious Orders Study (ROS), we quantified total tau, phosphorylated tau (pTau), FLNA, synaptophysin, vesicular acetylcholine transporters (VAChT) and choline acetyltransferase (ChAT) by Western blot. Aβ42 and neuritic plaques (NP) were quantified by ELISA and Bielschowsky silver impregnation, respectively. AD staging was determined using ABC method combining Thal, Braak and the CERAD staging. From this, clinicopathologic stages of AD were established by subdividing subjects with neuropathological AD between preclinical AD, prodromal AD and AD dementia (ADD). Receiver operating characteristics analyses were performed to predict AD neuropathology from FLNA quantifications.ResultsInsoluble FLNA was significantly and positively correlated with Aβ42, NP, Thal stages, ABC scores and AD clinicopathologic stages (p

Published
2022
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24. Preservation of functionality, immunophenotype, and recovery of HIV RNA from PBMCs cryopreserved for more than 20 years.

Author

Dyer, Wayne B., Suzuki, Kazuo, Levert, Angelique, Starr, Mitchell, Lloyd, Andrew R., and Zaunders, John J.

Subjects
MONONUCLEAR leukocytes, LYMPHOCYTE subsets, CELL physiology, T cells, IMMUNOLOGIC memory
Abstract

Background: Many research laboratories have long-term repositories of cryopreserved peripheral blood mononuclear cells (PBMC), which are costly to maintain but are of uncertain utility for immunological studies after decades in storage. This study investigated preservation of cell surface phenotypes and invitro functional capacity of PBMC from viraemic HIV+ patients and healthy seronegative control subjects, after more than 20 years of cryopreservation. Methods: PBMC were assessed by 18-colour flow cytometry for major lymphocyte subsets within T, B, NK, and dendritic cells and monocytes. Markers of T-cell differentiation and activation were compared with original immunophenotyping performed in 1995/1996 on fresh blood at the time of collection. Functionality of PBMC was assessed by culture with influenza antigen or polyclonal T-cell activation, to measure upregulation of activation-induced CD25 and CD134 (OX40) on CD4 T cells and cytokine production at day 2, and proliferative CD25+ CD4 blasts at day 7. RNA was extracted from cultures containing proliferating CD4+ blast cells, and intracellular HIV RNA was measured using short amplicons for both the Double R and pol region pi code assays, whereas long 4-kbp amplicons were sequenced. Results: All major lymphocyte and T-cell subpopulations were conserved after long-term cryostorage, except for decreased proportions of activated CD38+HLA-DR+ CD4 and CD8 T cells in PBMC from HIV+ patients. Otherwise, differences in T-cell subpopulations between recent and long-term cryopreserved PBMC primarily reflected donor age-associated or HIV infectionassociated effects on phenotypes. Proportions of naïve, memory, and effector subsets of T cells from thawed PBMC correlated with results from the original flow cytometric analysis of respective fresh blood samples. Antigen-specific and polyclonal T-cell responses were readily detected in cryopreserved PBMC from HIV+ patients and healthy control donors. Intracellular HIV RNA quantitation by pi code assay correlated with original plasma viral RNA load results. Full-length intracellular and supernatant-derived amplicons were generated from 5/12 donors, and sequences were ≥80% wild-type, consistent with replication competence. Conclusions: This unique study provides strong rationale and validity for using well-maintained biorepositories to support immunovirological research even decades after collection. [ABSTRACT FROM AUTHOR]

Published
2024
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27. 200 mm-scale growth of 2D layered GaSe with preferential orientation

Author

Mickaël Martin, Pascal Pochet, Hanako Okuno, Carlos Alvarez, Edith Bellet-Amalric, Pauline Hauchecorne, Théo Levert, Bernard Pelissier, Łukasz Borowik, Franck Bassani, Sylvain David, Jeremy Moeyaert, and Thierry Baron

Subjects
Biotechnology, TP248.13-248.65, Physics, QC1-999
Abstract

In this article, we present a fab-compatible metal–organic chemical vapor deposition growth process, realized in a hydrogen ambience, of two-dimensional (2D) layered GaSe on 200 mm diameter Si(111) wafers. Atomic scale characterization reveals initial stages of growth consisting of passivation of the H–Si (111) surface by a half-monolayer of GaSe, followed by nucleation of 2D-GaSe from the screw dislocations located at the step edges of the substrate. We, thus, demonstrate that by using a Si wafer that is slightly misoriented toward [1̄1̄2], the crystallographic orientation of 2D-GaSe can be step-edge-guided. It results in a coalesced layer that is nearly free from antiphase boundaries. In addition, we propose a sequential process to reduce the density of screw dislocations. This process consists in a subsequent regrowth after partial sublimation of the initially grown GaSe film. The local band bending in GaSe near the antiphase boundaries measured by Kelvin probe force microscopy emphasizes the electrical activity of these defects and the usefulness of having a nearly single-orientation film. Such a low defectivity layer opens up the way toward large-scale integration of 2D-optical transceivers in Si CMOS technology.

Published
2022
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28. Influence of extraction solvent on the biological properties of maritime pine bark (Pinus pinaster)

Author

Inés Mármol, Catarina Vieito, Vanessa Andreu, Annabel Levert, Anaïs Amiot, Cédric Bertrand, Mª Jesús Rodríguez-Yoldi, Joana Santos, and Manuela Vaz-Velho

Subjects
pinus pinaster, pine bark, extraction solvent, lc-dad-ms, antibacterial, anticancer, Food processing and manufacture, TP368-456
Abstract

Maritime pine bark (Pinus pinaster Aiton subsp. atlantica) is rich in polyphenols with known bioactive properties which are beneficial for human health. However, biological activities of bark extracts depend on the type of polyphenols extracted and the characteristics of these extractives depend on several factors such as the type of solvents used. The influence of the extraction solvent on the composition and consequently on the properties of the extracts has been poorly described. Thus, in this study the influence of the extraction solvent (water, ethanol and ethanol-water (50/50 v/v%)) on the antibacterial and anticancer properties of P. pinaster bark samples were evaluated. LC-DAD-MS profiling of the different extracts was also carried out to study their polyphenol composition. Results show that extraction solvent must be carefully chosen with respect to foreseeing use of bark extracts, since ethanolic and hydroethanolic extracts displayed the greatest antibacterial activity whereas water extracts showed increased anticancer properties.

Published
2022
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29. Acute Impacts of Ionizing Radiation Exposure on the Gastrointestinal Tract and Gut Microbiome in Mice

Author

Jameus, Alexandra, primary, Dougherty, Jessica, additional, Narendrula, Ramya, additional, Levert, Daniela, additional, Valiquette, Manon, additional, Pirkkanen, Jake, additional, Lalonde, Christine, additional, Bonin, Patrice, additional, Gagnon, Jeffrey D., additional, Appanna, Vasu D., additional, Tharmalingam, Sujeenthar, additional, and Thome, Christopher, additional

Published
2024
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31. Identifying SARS-COV-2 infected patients through canine olfactive detection on axillary sweat samples; study of observed sensitivities and specificities within a group of trained dogs

Author

Dominique Grandjean, Capucine Gallet, Clothilde Julien, Riad Sarkis, Quentin Muzzin, Vinciane Roger, Didier Roisse, Nicolas Dirn, Clement Levert, Erwan Breton, Arnaud Galtat, Alexandre Forget, Sebastien Charreaudeau, Fabien Gasmi, Caroline Jean-Baptiste, Sebastien Petitjean, Katia Hamon, Jean-Michel Duquesne, Chantal Coudert, Jean-Pierre Tourtier, Christophe Billy, Jean-Marc Wurtz, Anthony Chauvin, Xavier Eyer, Sabrina Ziani, Laura Prevel, Ilaria Cherubini, Enfel Khelili-Houas, Pierre Hausfater, Philippe Devillier, and Loic Desquilbet

Subjects
Medicine, Science
Abstract

There is an increasing need for rapid, reliable, non-invasive, and inexpensive mass testing methods as the global COVID-19 pandemic continues. Detection dogs could be a possible solution to identify individuals infected with SARS-CoV-2. Previous studies have shown that dogs can detect SARS-CoV-2 on sweat samples. This study aims to establish the dogs’ sensitivity (true positive rate) which measures the proportion of people with COVID-19 that are correctly identified, and specificity (true negative rate) which measures the proportion of people without COVID-19 that are correctly identified. Seven search and rescue dogs were tested using a total of 218 axillary sweat samples (62 positive and 156 negative) in olfaction cones following a randomised and double-blind protocol. Sensitivity ranged from 87% to 94%, and specificity ranged from 78% to 92%, with four dogs over 90%. These results were used to calculate the positive predictive value and negative predictive value for each dog for different infection probabilities (how likely it is for an individual to be SARS-CoV-2 positive), ranging from 10–50%. These results were compared with a reference diagnostic tool which has 95% specificity and sensitivity. Negative predictive values for six dogs ranged from ≥98% at 10% infection probability to ≥88% at 50% infection probability compared with the reference tool which ranged from 99% to 95%. Positive predictive values ranged from ≥40% at 10% infection probability to ≥80% at 50% infection probability compared with the reference tool which ranged from 68% to 95%. This study confirms previous results, suggesting that dogs could play an important role in mass-testing situations. Future challenges include optimal training methods and standardisation for large numbers of detection dogs and infrastructure supporting their deployment.

Published
2022

32. Deleterious mutations in the essential mRNA metabolism factor, hGle1, in amyotrophic lateral sclerosis

Author

Kaneb, Hannah M, Folkmann, Andrew W, Belzil, Véronique V, Jao, Li-En, Leblond, Claire S, Girard, Simon L, Daoud, Hussein, Noreau, Anne, Rochefort, Daniel, Hince, Pascale, Szuto, Anna, Levert, Annie, Vidal, Sabrina, André-Guimont, Catherine, Camu, William, Bouchard, Jean-Pierre, Dupré, Nicolas, Rouleau, Guy A, Wente, Susan R, and Dion, Patrick A

Subjects
Biochemistry and Cell Biology, Bioinformatics and Computational Biology, Genetics, Biological Sciences, Rare Diseases, Neurosciences, Brain Disorders, ALS, Neurodegenerative, Orphan Drug, 2.1 Biological and endogenous factors, Aetiology, Neurological, Amyotrophic Lateral Sclerosis, Animals, Arthrogryposis, Codon, Nonsense, DNA-Binding Proteins, Disease Models, Animal, Haploinsufficiency, HeLa Cells, Humans, Microscopy, Confocal, Motor Neurons, Mutation, Missense, Nuclear Pore, Nucleocytoplasmic Transport Proteins, Pedigree, Protein Processing, Post-Translational, RNA Splicing, RNA, Messenger, Zebrafish, Hela Cells, Medical and Health Sciences, Genetics & Heredity
Abstract

Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder characterized by the selective death of motor neurons. Causative mutations in the global RNA-processing proteins TDP-43 and FUS among others, as well as their aggregation in ALS patients, have identified defects in RNA metabolism as an important feature in this disease. Lethal congenital contracture syndrome 1 and lethal arthrogryposis with anterior horn cell disease are autosomal recessive fetal motor neuron diseases that are caused by mutations in another global RNA-processing protein, hGle1. In this study, we carried out the first screening of GLE1 in ALS patients (173 familial and 760 sporadic) and identified 2 deleterious mutations (1 splice site and 1 nonsense mutation) and 1 missense mutation. Functional analysis of the deleterious mutants revealed them to be unable to rescue motor neuron pathology in zebrafish morphants lacking Gle1. Furthermore, in HeLa cells, both mutations caused a depletion of hGle1 at the nuclear pore where it carries out an essential role in nuclear export of mRNA. These results suggest a haploinsufficiency mechanism and point to a causative role for GLE1 mutations in ALS patients. This further supports the involvement of global defects in RNA metabolism in ALS.

Published
2015

35. Topical. Permanent Low-Earth Orbit Testbed for Welding and Joining: A Path Forward for the Commercialization of Space

Author

Jeffrey W Sowards, Zachary C. Cordero, Zachary S Courtright, Gabriel Demeneghi, David L Edwards, William Evans, Ayman Girgis, Tim Langan, Ernest D. Levert, Fredrick N Michael, Rajiv Mishra, Antonio J. Ramirez, Paul Sanders, Michael P Sansoucie, Dusan P. Sekulic, Louise Strutzenberg, Raju Subedi, Will Tilson, and Fernando Reyes Tirado

Subjects
Space Sciences (General), Spacecraft Design, Testing And Performance, Space Transportation And Safety, Spacecraft Propulsion And Power
Abstract

NASA, defense, academia, and commercial space companies seek to develop orbital manufacturing to enhance mission capabilities. In-space welding and joining are needed for space-based manufacturing. We propose a permanent low-earth orbital welding and joining testbed for scientific study of relevant physical phenomena and development of welding and joining processes to technical maturity. Such data will enable integrated computational materials engineering(ICME)to elucidate the underlying physical and metallurgical processes needed to achieve critical space welding and joining operations.

Published
2022

36. We?re Poppin' For Math

Author

Levert, Brenda

Abstract

Each year, students in my seventh- and eighth-grade math classes plan and organize a schoolwide popcorn sale. This activity brings to life mathematical concepts learned in the classroom. By transferring textbook mathematics to a real-world situation, my students learn to value the mathematics being studied and are able to understand how it can affect them in the future. To conduct this lesson, we use several technologies, including the TI-83 Plus to find the best selling price for the popcorn and create charts and graphs to support decision making, and Microsoft Excel and Word to organize data.

Published
2004

37. Feasibility of Increasing Social Participation for Older Adults with Disabilities.

Author

Levasseur, Mélanie, Lefebvre, Hélène, Levert, Marie-Josée, Lacasse-Bédard, Joanie, Lacerte, Julie, Carbonneau, Hélène, and Therriault, Pierre-Yves

Subjects
HEALTH services accessibility, QUALITATIVE research, RESEARCH funding, PILOT projects, INTERVIEWING, DESCRIPTIVE statistics, SOCIAL integration, OLDER people with disabilities, INTERPERSONAL relations, SOCIAL participation, SOCIAL isolation
Abstract

This study aimed to adapt the personalized citizen assistance for social participation (APIC; French acronym for Accompagnement-citoyen personnalisé d'intégration communautaire) approach for older adults with disabilities and explore its feasibility. A qualitative clinical research design, including interviews, was used with 19 older adults with disabilities. They met with their nonprofessional attendant (citizen supervised by the research team) about 20 times and 16 of them completed the APIC. Personal facilitators and barriers to physical, intellectual, manual, artistic and social interaction experiences were related to health and sensory, motor or behavioral capabilities, including psychological and emotional availability. Results also highlighted environmental facilitators (e.g., paratransit, social support) and barriers (e.g. inaccessibility, weather, over-protective family). The APIC represents new opportunities for older adults to achieve community integration and enhance their social life and resources, while confirming the feasibility of addressing the global "aging well" priority. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
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38. HIV-1 viral blips are associated with repeated and increasingly high levels of cell-associated HIV-1 RNA transcriptional activity

Author

Suzuki, Kazuo, Levert, Angelique, Yeung, Julie, Starr, Mitchell, Cameron, Jane, Williams, Raffaella, Rismanto, Nikolas, Stark, Tayla, Druery, Dylan, Prasad, Salzeena, Ferrarini, Cristina, Hanafi, Imelda, McNally, Leon Patrick, Cunningham, Philip, Liu, Zhixin, Ishida, Takaomi, Huang, Chin-Shiou, Oswald, Velma, Evans, Louise, Symonds, Geoffrey, Brew, Bruce James, and Zaunders, John

Published
2021
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42. Software Performance Analysis

Author

Dagenais, Michel R., Yaghmour, Karim, Levert, Charles, and Pourzandi, Makan

Subjects
Computer Science - Performance, Computer Science - Operating Systems
Abstract

The key to speeding up applications is often understanding where the elapsed time is spent, and why. This document reviews in depth the full array of performance analysis tools and techniques available on Linux for this task, from the traditional tools like gcov and gprof, to the more advanced tools still under development like oprofile and the Linux Trace Toolkit. The focus is more on the underlying data collection and processing algorithms, and their overhead and precision, than on the cosmetic details of the graphical user interface frontends.

Published
2005

43. Security in Carrier Class Server Applications for All-IP Networks

Author

Chatel, Marc, Dagenais, Michel, Levert, Charles, and Pourzandi, Makan

Subjects
Computer Science - Networking and Internet Architecture
Abstract

A revolution is taking place in telecommunication networks. New services are appearing on platforms such as third generation cellular phones (3G) and broadband Internet access. This motivates the transition from mostly switched to all-IP networks. The replacement of the traditional shallow and well-defined interface to telephony networks brings accrued flexibility, but also makes the network accordingly difficult to properly secure. This paper surveys the implications of this transition on security issues in telecom applications. It does not give an exhaustive list of security tools or security protocols. Its goal is rather to initiate the reader to the security issues brought to carrier class servers by this revolution., Comment: Survey paper on the challenges of all IP networks in telecom applications

Published
2004

45. Needs Experienced and services received according to mild brain injury patients and families

Author

Hélène Lefebvre, Marie-Josée Levert

Subjects
lesão cerebral traumática leve, necessidades, serviços, Nursing, RT1-120
Abstract

DOI: https://doi.org/10.26694/reufpi.v1i2.787 Objetivo: O projeto buscou documentar as percepções e pontos de vista do paciente MTBI, sua família e os profissionais sobre a sua experiência. Metodologia: Este projecto-piloto qualitativa foi realizada com grupos focais com pessoas MTBI, familiares e profissionais. Resultados: Os resultados mostram as necessidades dos pacientes MTBI e suas famílias com relação às suas dificuldades na obtenção de informações adequadas, o apoio da família, serviços para responder às suas necessidades e facilitar a integração social. Conclusão: Este estudo piloto nos permitiu elaborar um perfil da percepção subjetiva dos atores envolvidos em relação às necessidades da clientela MTBI, os cuidados e serviços recebidos e sua eficácia como visto subjetivamente.

Published
2020

46. Partenariat entre patients, leaders en soins infirmiers et chercheurs : résultats d’une stratégie web de transfert des connaissances pour planifier le congé d’hôpital et faciliter les transitions au cours des soins oncologiques

Author

Hélène Lefebvre, Isabelle Brault, Odette Roy, Marie-Josée Levert, Dan Lecocq, Maryse Larrivière, and Michelle Proulx

Subjects
Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Un projet de recherche a réuni des patients partenaires, des leaders en soins infirmiers de six milieux cliniques du Québec ainsi que des chercheurs en vue de développer et tester un outil web, le Portail d’échange des savoirs (PES), afin d’améliorer les pratiques de planification des congés et les transitions au cours des soins oncologiques. Le projet a débouché sur la création d’un PES axé sur l’oncologie ouvert à toute la francophonie. Il en a aussi émergé une stratégie novatrice de transfert des connaissances (TC) prenant appui sur le PES et alimentée par le travail collaboratif des différents partenaires, parmi lesquels les patients ont tenu un rôle essentiel. Les résultats ont mis en lumière l’importance, pour la recherche en santé, de donner la parole à des patients partenaires dans le cadre d’une étroite collaboration avec des cliniciens et des chercheurs, pour que les pratiques cliniques soient mieux adaptées aux besoins réels des patients et de leurs proches.

Published
2018

47. Partnership between patients, nurse leaders and researchers: Outcomes of a web-based KT strategy for hospital discharge planning and care transitions in oncology

Author

Hélène Lefebvre, Isabelle Brault, Odette Roy, Marie-Josée Levert, Dan Lecocq, Maryse Larrivière, and Michelle Proulx

Subjects
Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

A research project brought together patient partners, nurse leaders from six clinical settings in Quebec and researchers to develop and test a web technology, the Forum for Knowledge Exchange (FKE), in order to improve discharge planning practices and oncological care transitions. The project led to the creation of a FKE accessible to the oncology sector of the Francophonie. It revealed an innovative strategy of knowledge transfer (KT) based on the FKE and was fed by collaborative work among partners, where the patient partners played a vital role. The results highlighted the importance, for health research, of giving a voice to patient partners in close collaboration with clinicians and researchers so that clinical practices are better adapted to the actual needs of patients and of their relatives.

Published
2018

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