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Mohsin N, Hunt D, Yan J, Jabbour AJ, Nghiem P, Choi J, Zhang Y, Freeman AF, Bergerson JRE, Dell’Orso S, Lachance K, Kulikauskas R, Collado L, Cao W, Lack J, Similuk M, Seifert BA, Ghosh R, Walkiewicz MA, Brownell I. Genetic Risk Factors for Early-Onset Merkel Cell Carcinoma. JAMA Dermatol 2024; 160:172-178. [PMID: 38170500 PMCID: PMC10765310 DOI: 10.1001/jamadermatol.2023.5362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 11/03/2023] [Indexed: 01/05/2024]
Abstract
Importance Merkel cell carcinoma (MCC) is a rare, aggressive neuroendocrine skin cancer. Of the patients who develop MCC annually, only 4% are younger than 50 years. Objective To identify genetic risk factors for early-onset MCC via genomic sequencing. Design, Setting, and Participants The study represents a multicenter collaboration between the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), the National Institute of Allergy and Infectious Diseases (NIAID), and the University of Washington. Participants with early-onset and later-onset MCC were prospectively enrolled in an institutional review board-approved study at the University of Washington between January 2003 and May 2019. Unrelated controls were enrolled in the NIAID Centralized Sequencing Program (CSP) between September 2017 and September 2021. Analysis was performed from September 2021 and March 2023. Early-onset MCC was defined as disease occurrence in individuals younger than 50 years. Later-onset MCC was defined as disease occurrence at age 50 years or older. Unrelated controls were evaluated by the NIAID CSP for reasons other than familial cancer syndromes, including immunological, neurological, and psychiatric disorders. Results This case-control analysis included 1012 participants: 37 with early-onset MCC, 45 with later-onset MCC, and 930 unrelated controls. Among 37 patients with early-onset MCC, 7 (19%) had well-described variants in genes associated with cancer predisposition. Six patients had variants associated with hereditary cancer syndromes (ATM = 2, BRCA1 = 2, BRCA2 = 1, and TP53 = 1) and 1 patient had a variant associated with immunodeficiency and lymphoma (MAGT1). Compared with 930 unrelated controls, the early-onset MCC cohort was significantly enriched for cancer-predisposing pathogenic or likely pathogenic variants in these 5 genes (odds ratio, 30.35; 95% CI, 8.89-106.30; P < .001). No germline disease variants in these genes were identified in 45 patients with later-onset MCC. Additional variants in DNA repair genes were also identified among patients with MCC. Conclusions and Relevance Because variants in certain DNA repair and cancer predisposition genes are associated with early-onset MCC, genetic counseling and testing should be considered for patients presenting at younger than 50 years.
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Affiliation(s)
- Noreen Mohsin
- Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, Maryland
| | - Devin Hunt
- Division of Intramural Research, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland
| | - Jia Yan
- Division of Intramural Research, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland
| | | | - Paul Nghiem
- Division of Dermatology, University of Washington, Seattle
| | - Jaehyuk Choi
- Northwestern University Department of Dermatology and Department of Biochemistry and Molecular Genetics, Chicago, Illinois
| | - Yue Zhang
- Northwestern University Department of Dermatology and Department of Biochemistry and Molecular Genetics, Chicago, Illinois
| | - Alexandra F. Freeman
- Laboratory of Clinical Immunology and Microbiology, NIAID, NIH, Bethesda, Maryland
| | | | | | | | | | - Loren Collado
- Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, Maryland
| | - Wenjia Cao
- Collaborative Bioinformatics Resource, NIAID, NIH, Bethesda, Maryland
| | - Justin Lack
- Collaborative Bioinformatics Resource, NIAID, NIH, Bethesda, Maryland
| | - Morgan Similuk
- Division of Intramural Research, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland
| | - Bryce A. Seifert
- Division of Intramural Research, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland
| | - Rajarshi Ghosh
- Division of Intramural Research, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland
| | - Magdalena A. Walkiewicz
- Division of Intramural Research, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Bethesda, Maryland
| | - Isaac Brownell
- Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, Maryland
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Lourido L, Ruiz-Romero C, Collado L, Hansson M, Klareskog L, Sjöberg R, Pin E, Nilsson P, Blanco FJ. POS0392 PRESENCE OF FOUR SERUM AUTOANTIBODIES ASSOCIATES WITH THE ACPA STATUS IN EARLY RHEUMATOID ARTHRITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:The presence of anti-citrullinated protein antibodies (ACPAs) is a hallmark of rheumatoid arthritis (RA) that precede the development of the disease by years and is used for its clinical diagnosis. However, there are RA subjects that test negative for ACPA and thus the early diagnosis on these patients may be delayed. Furthermore, the presence or absence of ACPA in RA supports the hypothesis that on these two subsets of patients underlie different pathogenesis and clinical outcomes.Objectives:In this work, we searched for serum autoantibodies useful to assist the early diagnosis of ACPA-seronegative RA and its management.Methods:We profiled the serum autoantibody repertoire of 80 ACPA-seronegative and 80 ACPA-seropositive RA subjects from the Swedish population-based Epidemiological Investigation of RA (EIRA) cohort. A suspension bead array platform built on protein fragments within Human Protein Atlas and selected from an initial untargeted screening using arrays containing 2660 total antigens was employed to identify IgG and IgA serum autoantibodies. A validation phase on antigen suspension bead arrays was carried out on another set of samples from EIRA containing 386 ACPA-seropositive, 358 ACPA-seronegative and 372 randomly selected control subjects of the same age and sex. A sample-specific threshold based on 20 times the median absolute deviation plus the median of all signals was selected to determine the reactivity of samples. The Wilcoxon rank sum test and Fisher’s test were applied for the comparison of autoantibody levels and reactivity frequencies between the groups.Results:Our data revealed four antigens associated with the ACPA status (Table 1). Testis-specific Y-encoded-like protein 4 (TSPYL4) showed significantly higher IgG reactivity frequency in ACPA-seronegative subjects compared to ACPA-seropositive (8% vs. 3%; P<0.05). Significant differences at IgG autoantibody levels (P<0.05) were also observed between ACPA-seronegative subjects and controls for this specific antigen. Significantly higher IgG autoantibody levels (P<0.05) towards another antigen, dual specificity mitogen-activated protein kinase kinase 6 (MAP2K6), were also observed in ACPA-seronegative subjects compared to ACPA-seropositive and controls. In contrast, we found significantly higher IgG autoantibody levels (P<0.05) in ACPA-seropositive individuals compared to ACPA-seronegative and controls towards two antigens, anosmin-1 (ANOS-1) and muscle related coiled-coil protein (MURC). ANOS-1 shows also significantly higher IgG reactivity frequency in ACPA-seropositive individuals compared to ACPA-seronegative and controls (22%, 9% and 6% respectively; P<0.05). Interestingly, three out of the four antigens discovered to be associated with the ACPA status in early RA are highly expressed in lungs and heart, two of the main extraarticular sites affected in RA. No significant differences were observed at IgA levels for any of the antigens analyzed.Table 1.Scheme of the different phases of the study, the features within each phase and the results. The reactivity to four antigens allows to distinguish ACPA-seronegative (ACPA-), ACPA seropositive (ACPA+) and controls.PhasesUntargeteddiscoveryTargeteddiscoveryTargetedvalidationNumber of samples80 ACPA-80 ACPA-358 ACPA-372 Controls80 ACPA+80 ACPA+386 ACPA+Antigen arrayplatformPlanararraysSuspensionbead array 1Suspensionbead array 2Number of antigens26606227Number of candidatebiomarkers6227 4 (TSPYL4,MAP2K6,ANOS1,MURC)Conclusion:Upon further validation in other early RA sample cohorts, our data suggest the measurement of these four autoantibodies may be useful for the early diagnosis of ACPA-seronegative RA and give insight into the pathogenesis of the different RA subsets.Characters from table content including title and footnotes:Disclosure of Interests:None declared
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Miao L, Collado L, Barkdull S, Kelly M, Veniaminova N, Wong S, Kelley M, Brownell I. 594 Developmental transcriptomics reveal conservation between mouse Merkel cell differentiation and Merkel cell carcinoma. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Vidal-Veuthey B, Jara R, Santander K, Mella A, Ruiz S, Collado L. Antimicrobial resistance and virulence genes profiles of Arcobacter butzleri strains isolated from back yard chickens and retail poultry meat in Chile. Lett Appl Microbiol 2020; 72:126-132. [PMID: 33025583 DOI: 10.1111/lam.13404] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 09/29/2020] [Accepted: 10/01/2020] [Indexed: 12/14/2022]
Abstract
This research aims to investigate the presence and pathogenic potential of Arcobacter in poultry meat samples purchased in the retail market of Valdivia (South of Chile) as well as in faecal samples from backyard chickens from rural areas around this city. The isolates obtained were identified by molecular methods. Furthermore, putative virulence genes were assessed by PCR and the antimicrobial resistance was tested by phenotypic methods. Arcobacter was present in 41·6% of the samples, with the highest value in retail poultry meat (55·7%) followed by backyard production (28·0%). Arcobacter butzleri was the most prevalent species (75·6%) followed by Arcobacter skirrowii (14·8%) and Arcobacter cryaerophilus (9·6%). An 8·5% of A. butzleri strains from meat were resistant to both ciprofloxacin and tetracycline and 6·1% were resistant to erythromycin, while none was resistant to gentamycin, unlike strains from domestic chickens, which showed no resistance. Furthermore, A. butzleri strains from chicken meat presented a higher prevalence of virulence genes than strains from domestic chickens. In fact, in this last group, some genes (hecA, hecB and irgA) were completely absent. Therefore, this study provides insight on the epidemiology of Arcobacter in Chilean poultry and suggests that under traditional breeding conditions strains are, apparently, less pathogenic and drug resistant.
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Affiliation(s)
- B Vidal-Veuthey
- Institute of Biochemistry and Microbiology, Faculty of Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - R Jara
- Institute of Biochemistry and Microbiology, Faculty of Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - K Santander
- Institute of Biochemistry and Microbiology, Faculty of Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - A Mella
- Institute of Biochemistry and Microbiology, Faculty of Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - S Ruiz
- Institute of Biochemistry and Microbiology, Faculty of Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - L Collado
- Institute of Biochemistry and Microbiology, Faculty of Sciences, Universidad Austral de Chile, Valdivia, Chile.,Millennium Nucleus in the Biology of Intestinal Microbiota, Santiago, Chile
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Hill N, Collado L, Harms P, Brownell I. 519 Paranuclear cytokeratin aggregates help Merkel cell carcinoma evade extrinsic apoptosis. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ochoa S, Martínez OA, Fernández H, Collado L. Comparison of media and growth conditions for culturing enterohepatic Helicobacter species. Lett Appl Microbiol 2019; 69:190-197. [PMID: 31220348 DOI: 10.1111/lam.13192] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 06/07/2019] [Accepted: 06/14/2019] [Indexed: 01/05/2023]
Abstract
This research aims to compare the culturing conditions for enterohepatic Helicobacter, evaluating culture media, incubation atmosphere and susceptibility to antimicrobials used to generate selective conditions. Four common media for the closely related genus Campylobacter (Columbia, Bolton, Brucella and CCDA agar), as well as the need for hydrogen in the microaerobic incubation atmosphere, were evaluated. Serial dilutions of 13 strains belonging to six species (H. apodemus, H. bilis, H. canicola, H. canis, H. equorum and Helicobacter sp.) were inoculated in each media and incubated at 37°C for 48 to 96 h using CampyGen (OXOID) and gaseous exchange (including hydrogen) in parallel. Columbia or Brucella agars were the most appropriate for culturing EHH (P < 0·05). However, there was no significant difference between the atmospheres evaluated (P = 0·13). In addition, minimal inhibitory concentration for six antibiotics showed that all isolates were resistant to trimethoprim, whereas for the rest of the antibiotics (cephalothin, cefoperazone, cefsulodin, teicoplanin and vancomycin) the inhibition range was between 8 and 64 μg ml- 1 . Our findings suggest that Columbia or Brucella media, regardless of the use of hydrogen, can be used for the EHH isolation. In addition, the concentration of antibiotics included in commercial campylobacteria supplements is suitable for EHH species recovery. SIGNIFICANCE AND IMPACT OF THE STUDY: Enterohepatic Helicobacter (EHH) infections have been associated with several diseases in humans such as acute gastroenteritis, inflammatory bowel disease and hepatobiliary diseases. Although they are frequently detected in clinical samples by molecular methods, only occasionally they are isolated using culture conditions described for the taxonomic related pathogen Campylobacter sp. This is because the optimal conditions for the isolation of EHH have not yet been described, which results in an underestimation of the prevalence and clinical importance of these emerging pathogens. Therefore, this study provides insight for culturing EHH species.
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Affiliation(s)
- S Ochoa
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile.,Millennium Nucleus in the Biology of Intestinal Microbiota, Santiago, Chile
| | - O A Martínez
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - H Fernández
- Instituto de Microbiología Clínica, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile
| | - L Collado
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile.,Millennium Nucleus in the Biology of Intestinal Microbiota, Santiago, Chile
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Abstract
The financial cost of cancer treatment in the United States is astronomically high and is expected to rise. The economic burden of cancer care increasingly falls on the patients. Patients thus experience "financial toxicity" of cancer care that can have catastrophic consequences on health and quality of life. Here we examine the results reported by Gilligan et al. in their study of financial toxicity in US cancer patients over 50 years old. This study provided corroborating and compelling data about the financial toxicity experienced by cancer patients. Many questions remain, however, about the consequences of financial toxicity and the full reality of cancer care economics in America.
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Affiliation(s)
- Loren Collado
- Dermatology Branch, NIAMS, NIH , Bethesda , MD , USA
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Hill N, Collado L, Nagashima K, Harms P, Brownell I. 140 Paranuclear dot sequesters death receptors to inhibit apoptosis in Merkel cell carcinoma. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Figueras MJ, Pérez-Cataluña A, Salas-Massó N, Levican A, Collado L. ' Arcobacter porcinus' sp. nov., a novel Arcobacter species uncovered by Arcobacter thereius. New Microbes New Infect 2016; 15:104-106. [PMID: 28070334 PMCID: PMC5219630 DOI: 10.1016/j.nmni.2016.11.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 10/26/2016] [Accepted: 11/04/2016] [Indexed: 11/11/2022] Open
Abstract
Arcobacter thereius is a species associated with human disease. A group of A. thereius pork strains (represented by strain LMG 24487) clustered separately from the type strain (LMG 24486T) in the 16S rRNA and multilocus phylogenetic trees. In silico DNA-DNA hybridization and average nucleotide identity results between their genomes (93.3 and 51.1%) confirmed ‘Arcobacter porcinus’ (LMG 24487T) as a new species.
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Affiliation(s)
- M J Figueras
- Unidad de Microbiología, Facultad de Medicina y Ciencias de la Salud, IISPV, Universidad Rovira i Virgili, Reus, Spain
| | - A Pérez-Cataluña
- Unidad de Microbiología, Facultad de Medicina y Ciencias de la Salud, IISPV, Universidad Rovira i Virgili, Reus, Spain
| | - N Salas-Massó
- Unidad de Microbiología, Facultad de Medicina y Ciencias de la Salud, IISPV, Universidad Rovira i Virgili, Reus, Spain
| | - A Levican
- Escuela de Tecnología Médica, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - L Collado
- Unidad de Microbiología, Facultad de Medicina y Ciencias de la Salud, IISPV, Universidad Rovira i Virgili, Reus, Spain; Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
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Erdozain A, Morentin B, Osna N, Tuma D, Kharbanda K, Collado L, Carter WG. FOC7PATHOLOGYFOC7-1DAMAGE TO THE CYTOSKELETAL ARCHITECTURE IS A PATHOLOGICAL HALLMARK OF ALCOHOL-RELATED BRAIN DAMAGE. Alcohol Alcohol 2015. [DOI: 10.1093/alcalc/agv079.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cafini F, Gómez-Aguado F, Corcuera MT, Ramos C, Bas P, Collado L, Gómez-Lus ML, Prieto J. Genotypic and phenotypic diversity in Enterococcus faecalis: is agar invasion a pathogenicity score? Rev Esp Quimioter 2015; 28:101-108. [PMID: 25904518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVES The main objective of the present study is to analyze different genotypic and phenotypic traits related to virulence in Enterococcus faecalis, as well as evaluated the agar invasion phenotype in a collection of isolates with different clinical origins. MATERIAL AND METHODS Seventy-nine E. faecalis isolates, with invasive and non-invasive clinical origins, have been used in this work. Presence of cytolysin activator (cylA), gelatinase (gelE), surface protein (esp), aggregation substance (asa1), endocarditis antigen (efaA), and collagen-binding protein (ace) have been analyzed by PCR. Phenotypic characterization included gelatinase activity, haemolysin production, biofilm formation and agar invasion. RESULTS All the isolates tested harboured at least one of the virulence determinants. The 95.5% of isolates from haematologic samples were positive for agar invasion test, significantly higher than isolates from non-invasive diseases. A significant reduction in relative invasion area was observed in three selected agar-invasive strains after 15 serial passages. CONCLUSIONS It has been observed a significant high prevalence of agar-invasion positive isolates among strains belonged to haematological samples. Agar invasiveness is reduced after adaptation of clinical isolates to laboratory conditions, showing that agar invasion phenotype can be modulate by culture conditions as other virulence factors observed in different bacterial species.
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Affiliation(s)
- F Cafini
- Fabio Cafini, Medicine Department - Microbiology Area, School of Medicine, Complutense University, Avda Complutense s/n, 28040, Madrid, Spain.
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Bragdon S, Jarvis DI, Gauchan D, Mar I, Hue NN, Balma D, Collado L, Latournerie L, Sthapit BR, Sadiki M, Fadda C, Ndungu-Skilton J. The agricultural biodiversity policy development process: Exploring means of policy development to support the on-farm management of crop genetic diversity. ACTA ACUST UNITED AC 2011. [DOI: 10.1080/17451590902789971] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- S. Bragdon
- a Oregon University System , Portland, Oregon, USA
| | - D. I. Jarvis
- b Bioversity International , Maccarese, Rome, Italy
| | - D. Gauchan
- c Socio-Economics and Agricultural Research Policy Division , Nepal Agricultural Research Council , Khumaltaur, Lalitpur, Nepal
| | - I. Mar
- d Institute for Agrobotany , Tapioszele, Hungary
| | - N. N. Hue
- e Plant Genetic Resources Center, VASI, Van Dien , Thanh Tri, Hanoi, Vietnam
| | - D. Balma
- f Institut de l'Environnement et Recherches Agricoles (INERA) , Ouagadougou, Burkina Faso
| | - L. Collado
- g Consorcio para el Desarrollo Sostenible de Ucayali (CODESU) , Pucallpa, Peru
| | - L. Latournerie
- h Institute of Tecnologico Agropecuario No.2 , Conkal, Yucatan, Mexico
| | - B. R. Sthapit
- i Bioversity International, Bioversity-APO 3/10 Dharmashila Marg, Nadipur Patan , Kaski, Pokhara, Nepal
| | - M. Sadiki
- j Institut Agronomique et Vétérinaire Hassan II , Rabat, Morocco
| | - C. Fadda
- b Bioversity International , Maccarese, Rome, Italy
| | - J. Ndungu-Skilton
- k Bioversity International, Regional Office for Sub-Saharan Africa, ICRAF , Nairobi, Kenya
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Seri B, Herrera DG, Gritti A, Ferron S, Collado L, Vescovi A, Garcia-Verdugo JM, Alvarez-Buylla A. Composition and organization of the SCZ: a large germinal layer containing neural stem cells in the adult mammalian brain. ACTA ACUST UNITED AC 2006; 16 Suppl 1:i103-11. [PMID: 16766696 DOI: 10.1093/cercor/bhk027] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Two known germinal zones continue to generate new neurons and glia in the adult mammalian brain: the subventricular zone (SVZ), lining the lateral walls of the lateral ventricle, and the subgranular zone of the dentate gyrus. Here we describe a region we will refer to as the subcallosal zone (SCZ). The SCZ is a caudal extension of the SVZ that is no longer associated to an open ventricle. It lies between the hippocampus and the corpus callosum. Cells isolated from the SCZ and cultured as neurospheres behave as neural stem cells in vitro. Using electron and light microscopy, we describe the cell types present in this region and how their organization differs from that of the SVZ. Using retroviral labeling and homotypic-homochronic microtransplantation techniques, we show that the majority of cells born in the SCZ migrate into the corpus callosum to become oligodendrocytes in vivo. This study defines the organization and fate of cells born in a large germinal region of the adult forebrain.
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Affiliation(s)
- B Seri
- Neurosurgery Department, University of California-San Francisco, San Francisco, CA 94143, USA
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López-Brea M, Collado L, de Rafael L, Baquero M. [Yersinia enterocolitica in fecal cultures: 5 years' experience]. Rev Sanid Hig Publica (Madr) 1984; 58:481-7. [PMID: 6531627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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López-Brea M, Collado L, Baquero M. [Seasonal incidence of diarrhea caused by Shigella]. Rev Sanid Hig Publica (Madr) 1984; 58:263-8. [PMID: 6523026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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López-Brea M, Collado L, De Rafael L, Jiménez ML, Barquero M. [Species of Shigella isolated in a 4-year period and antimicrobial sensitivity]. Rev Sanid Hig Publica (Madr) 1984; 58:151-8. [PMID: 6395307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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López-Brea M, Collado L, Baquero M. [Salmonella typhi: incidence in coproculture and microbiologic aspects]. Rev Sanid Hig Publica (Madr) 1983; 57:1153-9. [PMID: 6680462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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López-Brea M, Collado L, Jiménez ML. [Campylobacter: its importance in the diarrheic syndrome and taxonomic considerations]. Rev Sanid Hig Publica (Madr) 1981; 55:1221-30. [PMID: 7052267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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López-Brea M, Collado L, Baquero M. [Shigella: microbiological aspects and incidence in our environment]. Rev Sanid Hig Publica (Madr) 1980; 54:949-58. [PMID: 6755638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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López-Brea M, Collado L, De Rafael L, Baquero M. [Yersinia enterocolitica. Incidence in diarrheic processes and microbiologic aspects]. Rev Sanid Hig Publica (Madr) 1980; 54:469-76. [PMID: 7348361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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