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Li D, Karslı B, Rubio N, Janes M, Luo Y, Prinyawiwatkul W, Xu W. Enhanced microbial safety of channel catfish (
Ictalurus punctatus
) fillet using recently invented medium molecular weight water‐soluble chitosan coating. Lett Appl Microbiol 2020; 70:380-387. [DOI: 10.1111/lam.13284] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 01/23/2020] [Accepted: 02/10/2020] [Indexed: 01/07/2023]
Affiliation(s)
- D. Li
- College of Food Science and Nutritional Engineering China Agricultural University Beijing PR China
- School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA
| | - B. Karslı
- School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA
- Faculty of Fisheries Recep Tayyip Erdogan University Rize Turkey
| | - N.K. Rubio
- School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA
| | - M. Janes
- School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA
| | - Y. Luo
- College of Food Science and Nutritional Engineering China Agricultural University Beijing PR China
| | - W. Prinyawiwatkul
- School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA
| | - W. Xu
- School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA
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2
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Janes M, Kuster S, Goldson TM, Forjuoh SN. Steroid-induced psychosis. Proc (Bayl Univ Med Cent) 2019; 32:614-615. [PMID: 31656440 DOI: 10.1080/08998280.2019.1629223] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 04/29/2019] [Revised: 06/04/2019] [Accepted: 06/05/2019] [Indexed: 10/26/2022] Open
Abstract
Steroid-induced psychosis is a well-documented phenomenon. It usually occurs with oral systemic steroid treatment and is more common at higher doses, although there are case reports of occurrence with local steroid injections. We report a case of a 35-year-old man with no previous history of psychosis who was seen for follow-up after a brief psychotic episode following an injection of 5 mg of dexamethasone into his scrotum the previous day. The injection was given to treat chronic pain from a combat injury.
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Affiliation(s)
- Michael Janes
- Department of Family and Community Medicine, Baylor Scott & White Health and Texas A&M Health Science Center College of MedicineTempleTexas
| | - Shaw Kuster
- Department of Family and Community Medicine, Baylor Scott & White Health and Texas A&M Health Science Center College of MedicineTempleTexas
| | - Tove M Goldson
- Department of Family and Community Medicine, Baylor Scott & White Health and Texas A&M Health Science Center College of MedicineTempleTexas
| | - Samuel N Forjuoh
- Department of Family and Community Medicine, Baylor Scott & White Health and Texas A&M Health Science Center College of MedicineTempleTexas
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Alhejaili M, Olson D, Velázquez C, Janes M, Boeneke C, Aryana K. Short communication: Influence of an aqueous myrrh suspension on yogurt culture bacteria over yogurt shelf life. J Dairy Sci 2019; 102:2011-2016. [DOI: 10.3168/jds.2018-14831] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 10/16/2018] [Indexed: 01/08/2023]
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4
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Feng JY, Jarlsberg LG, Rose J, Grinsdale JA, Janes M, Higashi J, Osmond DH, Nahid P, Hopewell PC, Kato-Maeda M. Impact of Euro-American sublineages of Mycobacterium tuberculosis on new infections among named contacts. Int J Tuberc Lung Dis 2018; 21:509-516. [PMID: 28399965 DOI: 10.5588/ijtld.16.0487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The impact of demographic, clinical, and bacterial factors on new infection by Euro-American lineage Mycobacterium tuberculosis among contacts of patients with tuberculosis (TB) has not been evaluated. OBJECTIVE To describe the risk factors for new infection by Euro-American M. tuberculosis sublineages in San Francisco, California. DESIGN We included contacts of patients with TB due to Euro-American M. tuberculosis. Sublineages were determined by large-sequence polymorphisms. We used tuberculin skin testing or QuantiFERON®-TB Gold In-Tube to identify contacts with new infection. Regression models with generalized estimating equations were used to determine the risk factors for new infection. RESULTS We included 1488 contacts from 134 patients with TB. There were 79 (5.3%) contacts with new infection. In adjusted analyses, contacts of patients with TB due to region of difference 219 M. tuberculosis sublineage were less likely to have new infection (OR 0.23, 95%CI 0.06-0.84) than those with other sublineages. Other risk factors for new infection were contacts exposed to more than one patient with TB, contacts exposed for 30 days, or contacts with a history of smoking or excessive alcohol consumption. CONCLUSIONS In addition to well-known exposure and clinical characteristics, bacterial characteristics independently contribute to the transmissibility of TB in San Francisco.
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Affiliation(s)
- J-Y Feng
- Curry International Tuberculosis Center, University of California, San Francisco, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco General Hospital, San Francisco, California, USA, Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Institute of Clinical Medicine, National Yang-Ming University, Taipei, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - L G Jarlsberg
- Curry International Tuberculosis Center, University of California, San Francisco, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco General Hospital, San Francisco, California, USA
| | - J Rose
- Curry International Tuberculosis Center, University of California, San Francisco, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco General Hospital, San Francisco, California, USA
| | - J A Grinsdale
- San Francisco Tuberculosis Control Section, San Francisco Department of Public Health, San Francisco, Office of Equity and Quality Improvement, San Francisco Department of Public Health, San Francisco
| | - M Janes
- Curry International Tuberculosis Center, University of California, San Francisco, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco General Hospital, San Francisco, California, USA
| | - J Higashi
- San Francisco Tuberculosis Control Section, San Francisco Department of Public Health, San Francisco
| | - D H Osmond
- Department of Epidemiology and Biostatistics, University of California, San Francisco, California, USA
| | - P Nahid
- Curry International Tuberculosis Center, University of California, San Francisco, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco General Hospital, San Francisco, California, USA
| | - P C Hopewell
- Curry International Tuberculosis Center, University of California, San Francisco, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco General Hospital, San Francisco, California, USA
| | - M Kato-Maeda
- Curry International Tuberculosis Center, University of California, San Francisco, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco General Hospital, San Francisco, California, USA
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5
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Chamie G, Kato-Maeda M, Emperador DM, Wandera B, Mugagga O, Crandall J, Janes M, Marquez C, Kamya MR, Charlebois ED, Havlir DV. Spatial overlap links seemingly unconnected genotype-matched TB cases in rural Uganda. PLoS One 2018; 13:e0192666. [PMID: 29438413 PMCID: PMC5811029 DOI: 10.1371/journal.pone.0192666] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 01/26/2018] [Indexed: 11/25/2022] Open
Abstract
Introduction Incomplete understanding of TB transmission dynamics in high HIV prevalence settings remains an obstacle for prevention. Understanding where transmission occurs could provide a platform for case finding and interrupting transmission. Methods From 2012–2015, we sought to recruit all adults starting TB treatment in a Ugandan community. Participants underwent household (HH) contact investigation, and provided names of social contacts, sites of work, healthcare and socializing, and two sputum samples. Mycobacterium tuberculosis culture-positive specimens underwent 24-loci MIRU-VNTR and spoligotyping. We sought to identify epidemiologic links between genotype-matched cases by analyzing social networks and mapping locations where cases reported spending ≥12 hours over the one-month pre-treatment. Sites of spatial overlap (≤100m) between genotype-matched cases were considered potential transmission sites. We analyzed social networks stratified by genotype clustering status, with cases linked by shared locations, and compared network density by location type between clustered vs. non-clustered cases. Results Of 173 adults with TB, 131 (76%) were enrolled, 108 provided sputum, and 84/131 (78%) were MTB culture-positive: 52% (66/131) tested HIV-positive. Of 118 adult HH contacts, 105 (89%) were screened and 3 (2.5%) diagnosed with active TB. Overall, 33 TB cases (39%) belonged to 15 distinct MTB genotype-matched clusters. Within each cluster, no cases shared a HH or reported shared non-HH contacts. In 6/15 (40%) clusters, potential epidemiologic links were identified by spatial overlap at specific locations: 5/6 involved health care settings. Genotype-clustered TB social networks had significantly greater network density based on shared clinics (p<0.001) and decreased density based on shared marketplaces (p<0.001), compared to non-clustered networks. Conclusions In this molecular epidemiologic study, links between MTB genotype-matched cases were only identifiable via shared locations, healthcare locations in particular, rather than named contacts. This suggests most transmission is occurring between casual contacts, and emphasizes the need for improved infection control in healthcare settings in rural Africa.
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Affiliation(s)
- Gabriel Chamie
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
- * E-mail:
| | - Midori Kato-Maeda
- Curry International Tuberculosis Center, Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, United States of America
| | - Devy M. Emperador
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
| | - Bonnie Wandera
- Makerere University-University of California, San Francisco (MU-UCSF) Research Collaboration, Kampala, Uganda
| | - Olive Mugagga
- Makerere University-University of California, San Francisco (MU-UCSF) Research Collaboration, Kampala, Uganda
| | - John Crandall
- California Department of Public Health, Richmond, California, United States of America
| | - Michael Janes
- Curry International Tuberculosis Center, Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, United States of America
| | - Carina Marquez
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
| | - Moses R. Kamya
- Department of Medicine, School of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - Edwin D. Charlebois
- Center for AIDS Prevention Studies, Department of Medicine, University of California, San Francisco, United States of America
| | - Diane V. Havlir
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
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6
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Feng JY, Jarlsberg LG, Salcedo K, Rose J, Janes M, Lin SYG, Osmond DH, Jost KC, Soehnlen MK, Flood J, Graviss EA, Desmond E, Moonan PK, Nahid P, Hopewell PC, Kato-Maeda M. Clinical and bacteriological characteristics associated with clustering of multidrug-resistant tuberculosis. Int J Tuberc Lung Dis 2017; 21:766-773. [PMID: 28513421 DOI: 10.5588/ijtld.16.0510] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
SETTING The impact of the genetic characteristics of Mycobacterium tuberculosis on the clustering of multidrug-resistant tuberculosis (MDR-TB) has not been analyzed together with clinical and demographic characteristics. OBJECTIVE To determine factors associated with genotypic clustering of MDR-TB in a community-based study. DESIGN We measured the proportion of clustered cases among MDR-TB patients and determined the impact of clinical and demographic characteristics and that of three M. tuberculosis genetic characteristics: lineage, drug resistance-associated mutations, and rpoA and rpoC compensatory mutations. RESULTS Of 174 patients from California and Texas included in the study, the number infected by East-Asian, Euro-American, Indo-Oceanic and East-African-Indian M. tuberculosis lineages were respectively 70 (40.2%), 69 (39.7%), 33 (19.0%) and 2 (1.1%). The most common mutations associated with isoniazid and rifampin resistance were respectively katG S315T and rpoB S531L. Potential compensatory mutations in rpoA and rpoC were found in 35 isolates (20.1%). Hispanic ethnicity (OR 26.50, 95%CI 3.73-386.80), infection with an East-Asian M. tuberculosis lineage (OR 30.00, 95%CI 4.20-462.40) and rpoB mutation S531L (OR 4.03, 95%CI 1.05-23.10) were independent factors associated with genotypic clustering. CONCLUSION Among the bacterial factors studied, East-Asian lineage and rpoB S531L mutation were independently associated with genotypic clustering, suggesting that bacterial factors have an impact on the ability of M. tuberculosis to cause secondary cases.
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Affiliation(s)
- J-Y Feng
- Curry International Tuberculosis Center, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, Zuckerberg San Francisco General Hospital, San Francisco, California, USA, Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - L G Jarlsberg
- Curry International Tuberculosis Center, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, Zuckerberg San Francisco General Hospital, San Francisco, California, USA
| | - K Salcedo
- Division of Communicable Disease Control, Center for Infectious Diseases, California Department of Public Health, Richmond, California
| | - J Rose
- Curry International Tuberculosis Center, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, Zuckerberg San Francisco General Hospital, San Francisco, California, USA
| | - M Janes
- Curry International Tuberculosis Center, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, Zuckerberg San Francisco General Hospital, San Francisco, California, USA
| | - S-Y G Lin
- Division of Communicable Disease Control, Center for Infectious Diseases, California Department of Public Health, Richmond, California
| | - D H Osmond
- Department of Epidemiology and Biostatistics, University of California, San Francisco, California
| | - K C Jost
- Mycobacteriology/Mycology Group, Texas Department of State Health Services, Austin, Texas
| | - M K Soehnlen
- Microbiology Section, Michigan Department of Health and Human Services, Lansing, Michigan
| | - J Flood
- Division of Communicable Disease Control, Center for Infectious Diseases, California Department of Public Health, Richmond, California
| | - E A Graviss
- Houston Methodist Research Institute Molecular Tuberculosis Laboratory, Department of Pathology and Genomic Medicine, Houston Methodist Research Institute, Houston, Texas
| | - E Desmond
- Division of Communicable Disease Control, Center for Infectious Diseases, California Department of Public Health, Richmond, California
| | - P K Moonan
- Division of Global HIV and Tuberculosis, US Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - P Nahid
- Curry International Tuberculosis Center, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, Zuckerberg San Francisco General Hospital, San Francisco, California, USA
| | - P C Hopewell
- Curry International Tuberculosis Center, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, Zuckerberg San Francisco General Hospital, San Francisco, California, USA
| | - M Kato-Maeda
- Curry International Tuberculosis Center, and Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, Zuckerberg San Francisco General Hospital, San Francisco, California, USA
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7
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Kessler L, Chen J, Guo X, Hensen R, Patricelli M, Li S, Thach C, Darjania L, Li S, Wu T, Hu-Lowe D, Yao Y, Zarieh A, Janes M, Ely T, Burrows F, Zhang J, Li L, Ren P, Liu Y. KO-947, a potent and selective ERK inhibitor with slow dissociation kinetics. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32974-4] [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: 11/16/2022]
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8
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Sati L, Bennett D, Janes M, Huszar G. Next day determination of ejaculatory sperm motility after overnight shipment of semen to remote locations. J Assist Reprod Genet 2014; 32:117-25. [PMID: 25381621 DOI: 10.1007/s10815-014-0365-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 10/08/2014] [Indexed: 11/30/2022] Open
Abstract
PURPOSE To develop a method for delayed assessment of sperm motility, after shipment of semen to a remote laboratory. Sperm in semen were labeled with the MitoTracker(®) Red CM-H(2)XRos reagent, and fixed with 3.7 % formaldehyde by the laboratory technicians at the origin of the semen. This treatment reflected well sperm mitochondrial activity, and the MitoTracker(®) signal was related to sperm motility and velocity for 2-3 days following ejaculation. METHODS Sperm motility and velocity were evaluated manually and by computer assisted semen analysis (CASA), respectively. Fluorescence assessment of individual sperm was carried out with the computer assisted Metamorph v4.6.9 program. Emission levels of MitoTracker(®) spermatozoa were studied in room temperature and cooled semen, or in the respective room temperature swim-up sperm fractions following ejaculation, and on the second day (N = 103 samples, 89 men) and third day (N = 10 samples, 8 men). RESULTS Sperm with optical density (O.D.) ≥0.7 showed close correlations with ejaculatory sperm motility and velocity even after second day (r = 0.92, p < 0.001, N = 103 samples). Further, the multiple of sperm motility and velocity was also related to the proportion of high MitoTracker(®) reagent emission sperm (r = 0.83, p < 0.001, N = 103 samples). MitoTracker(®) dye fluorescence on the second day accurately reflected the ejaculatory sperm motility (r = 0.90, p < 0.001). Thus, a shipping delay would not adversely affect the results. CONCLUSIONS The delayed assessment of sperm motility in samples treated with MitoTracker(®) Red CM-H(2)XRos reagent and shipped to remote laboratory truly reflects the level of sperm motility at the time of the ejaculation.
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Affiliation(s)
- Leyla Sati
- Department of Histology and Embryology, Akdeniz University School of Medicine, Campus, 07070, Antalya, Turkey,
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9
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MacDonald KS, Haq K, Chan J, Iwajomo O, Janes M, Perciani C, Pilon R, Caldwell D, Sandstrom P, Willer DO. O01.6 Persistent SIV-Seronegative Macaque Monkeys Generate Multi-Cytokine Anti- SIV Mucosal Immune Responses Following Serial Low-Dose SIV Mucosal Challenge. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0088] [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: 11/04/2022]
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10
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Shivananda S, Symington A, Murthy P, Thomas S, Fusch C, Dutta S, Meyer C, Cusworth J, Janes M. Impact of Resuscitation and Early Stabilization Improvement in Newborns (Resin) Care Bundle on Invasive Ventilation and Severity of Illness in Preterm Infants. Paediatr Child Health 2013. [DOI: 10.1093/pch/18.suppl_a.8a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- S Shivananda
- Paediatrics, McMaster University, Hamilton, Ontario
| | - A Symington
- Paediatrics, McMaster University, Hamilton, Ontario
| | - P Murthy
- Paediatrics, McMaster University, Hamilton, Ontario
| | - S Thomas
- Paediatrics, McMaster University, Hamilton, Ontario
| | - C Fusch
- Paediatrics, McMaster University, Hamilton, Ontario
| | - S Dutta
- Paediatrics, McMaster University, Hamilton, Ontario
| | - C Meyer
- Paediatrics, McMaster University, Hamilton, Ontario
| | - J Cusworth
- Paediatrics, McMaster University, Hamilton, Ontario
| | - M Janes
- Paediatrics, McMaster University, Hamilton, Ontario
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Butt M, Symington A, Janes M, Steele S, Elliott L, Chant-Gambacort C, Paes B, Mondal T. Respiratory Syncytial Virus (RSV) Prophylaxis in Cardiac Disease: A Retrospective, Single-Centre Study. Paediatr Child Health 2012. [DOI: 10.1093/pch/17.suppl_a.26ab] [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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Naesby M, Nielsen SV, Nielsen CA, Green T, Tange TO, Simón E, Knechtle P, Hansson A, Schwab MS, Titiz O, Folly C, Archila RE, Maver M, van Sint Fiet S, Boussemghoune T, Janes M, Kumar ASS, Sonkar SP, Mitra PP, Benjamin VAK, Korrapati N, Suman I, Hansen EH, Thybo T, Goldsmith N, Sorensen AS. Yeast artificial chromosomes employed for random assembly of biosynthetic pathways and production of diverse compounds in Saccharomyces cerevisiae. Microb Cell Fact 2009; 8:45. [PMID: 19678954 PMCID: PMC2732597 DOI: 10.1186/1475-2859-8-45] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2009] [Accepted: 08/13/2009] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Natural products are an important source of drugs and other commercially interesting compounds, however their isolation and production is often difficult. Metabolic engineering, mainly in bacteria and yeast, has sought to circumvent some of the associated problems but also this approach is impeded by technical limitations. Here we describe a novel strategy for production of diverse natural products, comprising the expression of an unprecedented large number of biosynthetic genes in a heterologous host. RESULTS As an example, genes from different sources, representing enzymes of a seven step flavonoid pathway, were individually cloned into yeast expression cassettes, which were then randomly combined on Yeast Artificial Chromosomes and used, in a single transformation of yeast, to create a variety of flavonoid producing pathways. Randomly picked clones were analysed, and approximately half of them showed production of the flavanone naringenin, and a third of them produced the flavonol kaempferol in various amounts. This reflected the assembly of 5-7 step multi-species pathways converting the yeast metabolites phenylalanine and/or tyrosine into flavonoids, normally only produced by plants. Other flavonoids were also produced that were either direct intermediates or derivatives thereof. Feeding natural and unnatural, halogenated precursors to these recombinant clones demonstrated the potential to further diversify the type of molecules that can be produced with this technology. CONCLUSION The technology has many potential uses but is particularly suited for generating high numbers of structurally diverse compounds, some of which may not be amenable to chemical synthesis, thus greatly facilitating access to a huge chemical space in the search for new commercially interesting compounds.
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Affiliation(s)
- Michael Naesby
- Evolva A/S, Bülowsvej 25, 1870 Frederiksberg C, Denmark.
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13
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Paes BA, Steele S, Janes M, Pinelli J. Does a Risk Scoring Tool Target Rsv Prophylaxis Effectively in 33–35 Completed Weeks Gestational Age Infants? Paediatr Child Health 2009. [DOI: 10.1093/pch/14.suppl_a.51aa] [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: 11/15/2022] Open
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14
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Mahajan V, Kitsommart A, Rahman A, Janes M, Wilson J, Seidlitz W, Paes B. Outcomes of Late-Preterm Infants at Mcmaster Children's Hospital (Mch): a Retrospective, Single-Center Comparative Study. Paediatr Child Health 2009. [DOI: 10.1093/pch/14.suppl_a.50aa] [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: 11/13/2022] Open
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Abstract
Antioxidant compounds and their antioxidant activity in 4 different colored (green, yellow, orange, and red) sweet bell peppers (Capsicum annuum L.) were investigated. The total phenolics content of green, yellow, orange, and red peppers determined by the Folin-Ciocalteau method were 2.4, 3.3, 3.4, and 4.2 micromol catechin equivalent/g fresh weight, respectively. The red pepper had significantly higher total phenolics content than the green pepper. Among the 4 different colored peppers, red pepper contained a higher level of beta-carotene (5.4 microg/g), capsanthin (8.0 microg/g), quercetin (34.0 microg/g), and luteolin (11.0 microg/g). The yellow pepper had the lowest beta-carotene content (0.2 microg/g), while the green one had undetectable capsanthin and the lowest content of luteolin (2.0 microg/g). The free radical scavenging abilities of peppers determined by the 2,2'-diphenyl-1-picrylhydrazyl (DPPH) method were lowest for the green pepper (2.1 micromol Trolox equivalent/g) but not significantly different from the other 3 peppers. All 4 colored peppers exhibited significant abilities in preventing the oxidation of cholesterol or docosahexaenoic acid (DHA) (C22:6) during heating. However, these 4 peppers did not show significant differences in their abilities in preventing cholesterol oxidation. The green pepper showed slightly higher capability in preventing the oxidation of DHA compared to the other 3 peppers.
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Affiliation(s)
- T Sun
- Dept. of Food Science, Louisiana State Univ. Agricultural Center, Baton Rouge, LA 70803, USA
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Bennett D, Janes M, Sati L, Sakkas D, Huszar G. Oxidative Processes and Paternal Contribution of Spermatozoa: Relationship Between Reactive Oxygen Species (ROS) Production and Unexplained Male Infertility. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.185] [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: 10/25/2022]
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Abstract
The effects of (E,Z)-2,6-nonadienal (NDE) and (E)-2-nonenal (NE) on Bacillus cereus, Escherichia coli O157:H7, Listeria monocytogenes, and Salmonella Typhimurium were investigated. A suspension of each organism of 6 to 9 log CFU/ml was incubated for 1 h at 37 degrees C in brain heart infusion solution that contained 0 to 500 or 1,000 ppm of NDE or NE. Depending on concentration, exposure to either NDE or NE caused a reduction in CFU of each organism. Treatment with 250 and 500 ppm NDE completely eliminated viable B. cereus and Salmonella Typhimurium cells, respectively. L. monocytogenes was the most resistant to NDE, showing only about a 2-log reduction from exposure to 500 ppm for 1 h. Conversely, this concentration of NDE caused a 5.8-log reduction in E. coli O157:H7 cells. NE was also effective in inactivating organisms listed above. A higher concentration of NE, 1,000 ppm, was required to kill E. coli O157:H7, L. monocytogenes, or Salmonella Typhimurium compared with NDE. In conclusion, both NDE and NE demonstrated an apparent bactericidal activity against these pathogens.
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Affiliation(s)
- M J Cho
- Department of Food Science and Institute of Food Science and Engineering, University of Arkansas, 2650 North Young Avenue, Fayetteville, Arkansas 72704, USA
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Vohra S, Roberts R, Zhang B, Janes M, Schmidt B. Heat Loss Prevention (Help) in the Delivery Room: A Randomized Clinical Trial in Very Preterm Infants. Paediatr Child Health 2003. [DOI: 10.1093/pch/8.suppl_b.41b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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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Abstract
We examined weekly changes in viral levels in seven untreated infants infected with HIV at birth. Viral levels spiked immediately but reverted quickly to plateau levels typical of infant HIV infection within 2 weeks of first detected viraemia. We speculated that the depletion of naive, susceptible cells is responsible for the rapid decrease in spike levels and that the rapid replacement of lymphocytes in infants causes the high plateau viral levels (10(5) copies/ml) to be sustained.
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Affiliation(s)
- R J Biggar
- Viral Epidemiology Branch, NCI, Bethesda, Maryland, USA
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21
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Janes M, Kalyn A, Pinelli J, Paes B. A randomized trial comparing peripherally inserted central venous catheters and peripheral intravenous catheters in infants with very low birth weight. J Pediatr Surg 2000; 35:1040-4. [PMID: 10917292 DOI: 10.1053/jpsu.2000.7767] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND/PURPOSE To determine whether percutaneously inserted central venous catheters (PICC) and peripheral intravenous catheters (PIV) in infants with very low birth weight (VLBW) differ with respect to (1) incidence of sepsis, (2) number of insertion attempts and catheters required for total intravenous therapy, (3) courses of antibiotics, and (4) total duration of intravenous (IV) use. METHODS A randomized comparative trial was conducted involving 63 VLBW infants (<1,251 g) who required IV therapy. Infants were assigned randomly at 1 week of age to either a PIV or a PICC catheter and followed up prospectively until an IV was no longer required or the infant was transferred out of the neonatal intensive care unit. RESULTS Data were analyzed on an intention-to-treat basis. There was no difference in the incidence of sepsis (P = .64), number of courses of antibiotics (P = .16), or total duration of IV use (P= .34) between the 2 groups. The number of insertion attempts required for total IV therapy was significantly lower in the PICC group than in the PIV group (P = .008). There also was a significantly lower number of total catheters utilized in the PICC group (P = .002). When data were controlled for birth weight strata the results were similar. CONCLUSION PICC lines reduced the number of painful IV procedures in VLBW infants without additional morbidity.
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Affiliation(s)
- M Janes
- Children's Hospital of The Hamilton Health Sciences Corporation and St Joseph's Hospital, Ontario, Canada
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22
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Biggar RJ, Janes M, Pilon R, Miotti P, Taha TE, Broadhead R, Mtimivalye L, Kumwenda N, Cassol S. Virus levels in untreated African infants infected with human immunodeficiency virus type 1. J Infect Dis 1999; 180:1838-43. [PMID: 10558939 DOI: 10.1086/315122] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
In developed areas, human immunodeficiency virus (HIV)-infected infants have high virus levels and rapidly progress to death. HIV levels were assessed in 1994-1997 in untreated infants in Malawi by analysis of dried blood spots tested by nucleic acid silica-bound amplification. Of 24 umbilical cord blood (CB)-positive samples, 83% had >10,000 copies/mL. The median virus level was 78,000 copies/mL. First positive sample median levels were 355,000 copies/mL among 52 perinatally infected infants and 130,000 copies/mL among 43 infants infected by breast-feeding. Virus levels were stable, and initial levels predicted levels 1 year after infection (P=.005), at which time levels did not significantly differ among in utero, perinatally, or postnatally infected infants. Thus, neither age at infection nor route of infection significantly influenced HIV levels measured 1 year after infection. Most (87%) CB-positive infants were infected before labor onset, since virus levels greatly exceeded those expected in their mothers.
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Affiliation(s)
- R J Biggar
- Viral Epidemiology Branch, National Cancer Institute, National Institute of Allergy and Infectious Diseases, Rockville, MD 20862, USA.
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Janes M, Pinelli J. Quotable quotes from transcriptions. Neonatal Netw 1999; 18:59-60, 74. [PMID: 10633686 DOI: 10.1891/0730-0832.18.4.59] [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] [Indexed: 11/25/2022]
Abstract
VERBAL COMMUNICATION IS EASY to misinterpret. In hospitals, misinterpretation can be exacerbated by many factors. People with accents from around the world dictate radiology reports, operative procedures, physical examinations, discharge summaries, and other documents for transcription. Some mumble. Others speak very quickly. In addition, terminology varies greatly among disciplines and specialties. It is amazing that the transcriptionists on the other end of the phone are generally able to transform these cryptic messages into coherent printed form. The few errors that do occur, however, can make for humorous reading—although not for accurate descriptions.
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Affiliation(s)
- M Janes
- NICU, Children's Hospital of the Hamilton Health Sciences Corporation, Ontario, Canada
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Cassol SA, Diaz-Mitoma F, Pilon R, Janes M, Cameron DW. Quantification of HIV-1 RNA in Dried Plasma Spots (DPS) : A Field Approach to Therapeutic Monitoring. Methods Mol Med 1999; 17:139-149. [PMID: 21380665 DOI: 10.1385/0-89603-369-4:139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The ability to accurately measure viral RNA in the plasma (1-3) and intracellular (4-7) compartments of HIV-1-infected persons has led to a dramatic improvement in the understanding of the natural history of HIV-1 and AIDS. A number of recent studies have convincingly demonstrated that high levels of viral replication occur at all stages of disease (8-10), and that changes in viral RNA load are predictive of disease outcome (11,12), and response to therapy (13,14). These findings, combined with the introduction of potent new antivirals (15,16), have stimulated a growing interest in viral load monitoring, both as a function of disease status, and as a predictor of disease progression and therapeutic efficacy.
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Affiliation(s)
- S A Cassol
- Ottawa General Hospital Research Institute, Ottawa, Ontario, Canada
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25
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Kleene R, Janes M, Meyhack B, Pulfer K, Hinnen A. High-level expression of endogenous acid phosphatase inhibits growth and vectorial secretion in Saccharomyces cerevisiae. J Cell Biochem 1995; 57:238-50. [PMID: 7759560 DOI: 10.1002/jcb.240570207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The secretion pathway of Saccharomyces cerevisiae was challenged by constitutively overexpressing plasmid-encoded acid phosphatase, a secreted endogenous glycoprotein. A 2-microns-based multicopy plasmid carrying the coding sequence of acid phosphatase under the control of a truncated variant of the strong constitutive glyceraldehyde-3-phosphate dehydrogenase promoter was used for expression. Selection for the promoterless dLEU2 marker leads to a growth arrest. This is not per se due to leucine starvation, but due to intracellular accumulation of highly glycosylated enzymatically active acid phosphatase. Immunofluorescence and cytological analysis indicate that intracellular accumulation of acid phosphatase occurs in a subpopulation of cells. By Ludox-AM density centrifugation, these cells can be enriched on the basis of their higher density. The dense accumulating cells have a higher average plasmid copy number and produce more acid phosphatase than non-accumulating cells of low density. These cells are defective in directed secretion and bud formation, therefore can no longer grow and show dramatic changes in cell morphology. We suggest that the secretion pathway in these cells is overloaded with the high level of acid phosphatase leading to a shutdown in vectorial secretion, subsequently to a standstill in growth and to the intracellular accumulation of further expressed acid phosphatase. We have indications that accumulation of acid phosphatase occurs in the late Golgi, suggesting a limitation of the overall secretion at this stage.
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Affiliation(s)
- R Kleene
- Ciba-Geigy AG, Biotechnology, Basel, Switzerland
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Abstract
OBJECTIVE To evaluate two heel-stick devices by comparing the volume of blood collected, blood sampling time, amount of hemolysis, pain inflicted during the procedure, and extent of bruising. DESIGN Randomized trial. SETTING Primary care center in a tertiary-level perinatal hospital. PARTICIPANTS Forty healthy, full-term newborns with a postnatal age of greater than 24 hours. Newborns were fed no more than 1 1/2 hours before blood sample collection and fulfilled the requirement for routine phenylketonuria and thyroid screening. INTERVENTIONS Newborns were allocated to a single stab with either an automated incision or a lancet puncture device. MEASUREMENTS/MAIN RESULTS The total volume of blood and blood sampling time were significantly better with the automated incision device (P < .001). Hemolysis was also reduced with the automated incision device (P < .03). Plasma hemoglobin levels were below 1.0 g/L in all samples obtained with the automated incision device and in 71% of samples obtained with the lancet device. There were no differences in the extent of bruising or in pain symptoms manifested by mean increases in heart rate and percentage of time crying during the procedure. CONCLUSIONS The larger volume of blood obtained within a shorter period for blood collection and reduced hemolysis with the automated incision device make it a preferred instrument for neonatal blood collection.
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Affiliation(s)
- B Paes
- Department of Pediatrics, McMaster University Medical Centre, Hamilton, Ontario, Canada
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Janes M, Meyhack B, Zimmermann W, Hinnen A. The influence of GAP promoter variants on hirudin production, average plasmid copy number and cell growth in Saccharomyces cerevisiae. Curr Genet 1990; 18:97-103. [PMID: 2225146 DOI: 10.1007/bf00312596] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The yeast Saccharomyces cerevisiae has been engineered to synthesize and secrete desulfato-hirudin (hirudin), a thrombin inhibitor from the leech Hirudo medicinalis. The synthetic gene coding for hirudin was expressed constitutively under the control of four size-variants of the yeast glyceraldehyde-3-phosphate dehydrogenase promoter (GAP) and cloned into a 2 mu based multicopy yeast vector. The constitutive action of the four promoter variants was confirmed by demonstrating that the expression and secretion of hirudin is growth-related. The different efficiencies of the promoter variants not only affected hirudin expression but also led to changes in several cellular parameters, such as cell growth, average plasmid copy number and plasmid stability. The observed changes show that yeast cells establish a specific equilibrium for each promoter variant. We conclude, that the adjustment of cellular parameters in response to the expression levels of a heterologous protein is regulated by two counteracting selective forces: (1) the need for complementation of the auxotrophic host marker by the plasmid-encoded selection gene which, in the case of dLEU2, requires several plasmid copies; and (2) a selective advantage of cells with a lower copy number enabling them to escape the burden of heterologous protein production.
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Affiliation(s)
- M Janes
- Ciba-Geigy AG, Biotechnology Department, Basel, Switzerland
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Frey J, Janes M, Engelhardt W, Afting EG, Geerds C, Möller B. Fc gamma-receptor-mediated changes in the plasma membrane potential induce prostaglandin release from human fibroblasts. Eur J Biochem 1986; 158:85-9. [PMID: 2942401 DOI: 10.1111/j.1432-1033.1986.tb09724.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Binding of aggregated human immunoglobulin G (IgG) on diploid human fibroblasts leads to a rapid depolarization of the cells within 1-2 min. We resolved this membrane potential change into its plasma membrane and mitochondrial membrane components by measuring the transmembrane distribution of the lipophilic tritium-labelled cation tetraphenylphosphonium, [3H]Ph4P+. The responsibility of the plasma membrane for the membrane potential change, induced by binding of IgGs, is demonstrated. The IgG-induced membrane depolarization leads to the induction of prostaglandin E2 synthesis. Aggregated immunoglobulins (IgG) are specifically bound via the Fc portion because only binding of Fc fragments, in contrast to (Fab')2 fragments, leads to a stimulation of prostaglandin E2 synthesis comparable to that mediated by IgGs. Depolarization of the plasma membrane by short incubation of the fibroblasts in high-K+ buffer (5 min) results in a stimulation of prostaglandin E2 synthesis comparable to that mediated by either aggregated human IgGs or Fc fragments. Our previous results on Fc gamma-receptor-mediated antigen-IgG-antibody complex internalization showed that a maximum uptake of these complexes could be detected 60-90 min after binding. Therefore, we conclude that not internalisation but binding of aggregated IgGs to the Fc gamma receptors on human fibroblasts is the stimulus for plasma membrane depolarization leading to an enhanced prostaglandin E2 release.
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Freitag H, Janes M, Neupert W. Biosynthesis of mitochondrial porin and insertion into the outer mitochondrial membrane of Neurospora crassa. Eur J Biochem 1982; 126:197-202. [PMID: 6290213 DOI: 10.1111/j.1432-1033.1982.tb06766.x] [Citation(s) in RCA: 95] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Mitochondrial porin, the major protein of the outer mitochondrial membrane is synthesized by free cytoplasmic polysomes. The apparent molecular weight of the porin synthesized in homologous or heterologous cell-free systems is the same as that of the mature porin. Transfer in vitro of mitochondrial porin from the cytosolic fraction into the outer membrane of mitochondria could be demonstrated. Before membrane insertion, mitochondrial porin is highly sensitive to added proteinase; afterwards it is strongly protected. Binding of the precursor form to mitochondria occurs at 4 degrees C and appears to precede insertion into the membrane. Unlike transfer of many precursor proteins into or across the inner mitochondrial membrane, assembly of the porin is not dependent on an electrical potential across the inner membrane.
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Delano BG, Janes M, Friedman EA. Paid aides in home hemodialysis: no panacea. Proc Clin Dial Transplant Forum 1980; 10:138-140. [PMID: 6810341] [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: 05/21/2023]
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