White J

References (7)

Title : Non-front-fanged colubroid snakes: A current evidence-based analysis of medical significance - Weinstein_2013_Toxicon_69C_103
Author(s) : Weinstein SA , White J , Keyler DE , Warrell DA
Ref : Toxicon , 69C :103 , 2013
Abstract : Non-front-fanged colubroid snakes (NFFC; formerly and artificially taxonomically assembled as "colubrids") comprise about 70% of extant snake species and include several taxa now known to cause lethal or life threatening envenoming in humans. Although the medical risks of bites by only a handful of species have been documented, a growing number of NFFC are implicated in medically significant bites. The majority of these snakes have oral products (Duvernoy's secretions, or venoms) with unknown biomedical properties and their potential for causing harm in humans is unknown. Increasingly, multiple NFFC species are entering the commercial snake trade posing an uncertain risk. Published case reports describing NFFC bites were assessed for evidence-based value, clinical detail and verified species identification. These data were subjected to meta-analysis and a hazard index was generated for select taxa. Cases on which we consulted or personally treated were included and subjected to the same assessment criteria. Cases involving approximately 120 species met the selection criteria, and a small subset designated Hazard Level 1 (most hazardous), contained 5 species with lethal potential. Recommended management of these cases included antivenom for 3 species, Dispholidus typus, Rhabdophis tiginis, Rhabdophis subminiatus, whereas others in this subset without commercially available antivenoms (Thelotornis spp.) were treated with plasma/erythrocyte replacement therapy and supportive care. Heparin, antifibrinolytics and/or plasmapheresis/exchange transfusion have been used in the management of some Hazard Level 1 envenomings, but evidence-based analysis positively contraindicates the use of any of these interventions. Hazard Level 2/3 species were involved in cases containing mixed quality data that implicated these taxa (e.g. Boiga irregularis, Philodryas olfersii, Malpolon monspessulanus) with bites that caused rare systemic effects. Recommended management may include use of acetylcholinesterase inhibitors (e.g. neostigmine) and wound care on a case-by-case basis. Hazard level 3 species comprised a larger group capable of producing significant local effects only, often associated with a protracted bite (eg Heterodon nasicus, Borikenophis (Alsophis) portoricensis, Platyceps (Coluber) rhodorachis). Management is restricted to wound care. Bites by Hazard level 4 species comprised the majority of surveyed taxa and these showed only minor effects of no clinical importance. This study has produced a comprehensive evidence-based listing of NFFC snakes tabulated against medical significance of bites, together with best-practice management recommendations. This analysis assumes increasing importance, as there is growing exposure to lesser-known NFFC snakes, particularly in captive collections that may uncover further species of significance in the future. Careful and accurate documentation of bites by verified species of NFFC snakes is required to increase the evidence base and establish the best medical management approach for each species.
ESTHER : Weinstein_2013_Toxicon_69C_103
PubMedSearch : Weinstein_2013_Toxicon_69C_103
PubMedID: 23462380

Title : Population genomic sequencing of Coccidioides fungi reveals recent hybridization and transposon control - Neafsey_2010_Genome.Res_20_938
Author(s) : Neafsey DE , Barker BM , Sharpton TJ , Stajich JE , Park DJ , Whiston E , Hung CY , McMahan C , White J , Sykes S , Heiman D , Young S , Zeng Q , Abouelleil A , Aftuck L , Bessette D , Brown A , FitzGerald M , Lui A , Macdonald JP , Priest M , Orbach MJ , Galgiani JN , Kirkland TN , Cole GT , Birren BW , Henn MR , Taylor JW , Rounsley SD
Ref : Genome Res , 20 :938 , 2010
Abstract : We have sequenced the genomes of 18 isolates of the closely related human pathogenic fungi Coccidioides immitis and Coccidioides posadasii to more clearly elucidate population genomic structure, bringing the total number of sequenced genomes for each species to 10. Our data confirm earlier microsatellite-based findings that these species are genetically differentiated, but our population genomics approach reveals that hybridization and genetic introgression have recently occurred between the two species. The directionality of introgression is primarily from C. posadasii to C. immitis, and we find more than 800 genes exhibiting strong evidence of introgression in one or more sequenced isolates. We performed PCR-based sequencing of one region exhibiting introgression in 40 C. immitis isolates to confirm and better define the extent of gene flow between the species. We find more coding sequence than expected by chance in the introgressed regions, suggesting that natural selection may play a role in the observed genetic exchange. We find notable heterogeneity in repetitive sequence composition among the sequenced genomes and present the first detailed genome-wide profile of a repeat-induced point mutation (RIP) process distinctly different from what has been observed in Neurospora. We identify promiscuous HLA-I and HLA-II epitopes in both proteomes and discuss the possible implications of introgression and population genomic data for public health and vaccine candidate prioritization. This study highlights the importance of population genomic data for detecting subtle but potentially important phenomena such as introgression.
ESTHER : Neafsey_2010_Genome.Res_20_938
PubMedSearch : Neafsey_2010_Genome.Res_20_938
PubMedID: 20516208
Gene_locus related to this paper: cocp7-c5p2u8 , cocp7-c5p5s7 , cocp7-c5pe69 , cocp7-c5pf68 , cocp7-c5pgk6 , cocim-j3ka92 , cocp7-c5phc6 , cocps-e9d3i4 , cocit-a0a0j8rde7 , cocps-e9csw0 , cocps-e9dgm8

Title : Genome sequence of Streptococcus mutans UA159, a cariogenic dental pathogen - Ajdic_2002_Proc.Natl.Acad.Sci.U.S.A_99_14434
Author(s) : Ajdic D , McShan WM , McLaughlin RE , Savic G , Chang J , Carson MB , Primeaux C , Tian R , Kenton S , Jia H , Lin S , Qian Y , Li S , Zhu H , Najar F , Lai H , White J , Roe BA , Ferretti JJ
Ref : Proceedings of the National Academy of Sciences of the United States of America , 99 :14434 , 2002
Abstract : Streptococcus mutans is the leading cause of dental caries (tooth decay) worldwide and is considered to be the most cariogenic of all of the oral streptococci. The genome of S. mutans UA159, a serotype c strain, has been completely sequenced and is composed of 2,030,936 base pairs. It contains 1,963 ORFs, 63% of which have been assigned putative functions. The genome analysis provides further insight into how S. mutans has adapted to surviving the oral environment through resource acquisition, defense against host factors, and use of gene products that maintain its niche against microbial competitors. S. mutans metabolizes a wide variety of carbohydrates via nonoxidative pathways, and all of these pathways have been identified, along with the associated transport systems whose genes account for almost 15% of the genome. Virulence genes associated with extracellular adherent glucan production, adhesins, acid tolerance, proteases, and putative hemolysins have been identified. Strain UA159 is naturally competent and contains all of the genes essential for competence and quorum sensing. Mobile genetic elements in the form of IS elements and transposons are prominent in the genome and include a previously uncharacterized conjugative transposon and a composite transposon containing genes for the synthesis of antibiotics of the gramicidin/bacitracin family; however, no bacteriophage genomes are present.
ESTHER : Ajdic_2002_Proc.Natl.Acad.Sci.U.S.A_99_14434
PubMedSearch : Ajdic_2002_Proc.Natl.Acad.Sci.U.S.A_99_14434
PubMedID: 12397186
Gene_locus related to this paper: strmu-BACT , strmu-BGLB , strmu-GBPD , strmu-pepx , strmu-SMU.118C , strmu-SMU.178 , strmu-SMU.633 , strmu-SMU.643 , strmu-SMU.737 , strmu-SMU.1028 , strmu-SMU.1071C , strmu-SMU.1280C , strmu-SMU.1314 , strmu-SMU.1319C , strmu-SMU.1337C , strmu-SMU.1393C , strmu-SMU.1443C , strmu-SMU.1482C , strmu-SMU.1678

Title : Complete genome sequence of an M1 strain of Streptococcus pyogenes - Ferretti_2001_Proc.Natl.Acad.Sci.U.S.A_98_4658
Author(s) : Ferretti JJ , McShan WM , Ajdic D , Savic DJ , Savic G , Lyon K , Primeaux C , Sezate S , Suvorov AN , Kenton S , Lai HS , Lin SP , Qian Y , Jia HG , Najar FZ , Ren Q , Zhu H , Song L , White J , Yuan X , Clifton SW , Roe BA , McLaughlin R
Ref : Proc Natl Acad Sci U S A , 98 :4658 , 2001
Abstract : The 1,852,442-bp sequence of an M1 strain of Streptococcus pyogenes, a Gram-positive pathogen, has been determined and contains 1,752 predicted protein-encoding genes. Approximately one-third of these genes have no identifiable function, with the remainder falling into previously characterized categories of known microbial function. Consistent with the observation that S. pyogenes is responsible for a wider variety of human disease than any other bacterial species, more than 40 putative virulence-associated genes have been identified. Additional genes have been identified that encode proteins likely associated with microbial "molecular mimicry" of host characteristics and involved in rheumatic fever or acute glomerulonephritis. The complete or partial sequence of four different bacteriophage genomes is also present, with each containing genes for one or more previously undiscovered superantigen-like proteins. These prophage-associated genes encode at least six potential virulence factors, emphasizing the importance of bacteriophages in horizontal gene transfer and a possible mechanism for generating new strains with increased pathogenic potential.
ESTHER : Ferretti_2001_Proc.Natl.Acad.Sci.U.S.A_98_4658
PubMedSearch : Ferretti_2001_Proc.Natl.Acad.Sci.U.S.A_98_4658
PubMedID: 11296296
Gene_locus related to this paper: strpy-ESTA , strpy-PEPXP , strpy-Q8K5W4 , strpy-SPY1308 , strpy-SPYM18.1727

Title : Sequence evaluation of four pooled-tissue normalized bovine cDNA libraries and construction of a gene index for cattle - Smith_2001_Genome.Res_11_626
Author(s) : Smith TP , Grosse WM , Freking BA , Roberts AJ , Stone RT , Casas E , Wray JE , White J , Cho J , Fahrenkrug SC , Bennett GL , Heaton MP , Laegreid WW , Rohrer GA , Chitko-McKown CG , Pertea G , Holt I , Karamycheva S , Liang F , Quackenbush J , Keele JW
Ref : Genome Res , 11 :626 , 2001
Abstract : An essential component of functional genomics studies is the sequence of DNA expressed in tissues of interest. To provide a resource of bovine-specific expressed sequence data and facilitate this powerful approach in cattle research, four normalized cDNA libraries were produced and arrayed for high-throughput sequencing. The libraries were made with RNA pooled from multiple tissues to increase efficiency of normalization and maximize the number of independent genes for which sequence data were obtained. Target tissues included those with highest likelihood to have impact on production parameters of animal health, growth, reproductive efficiency, and carcass merit. Success of normalization and inter- and intralibrary redundancy were assessed by collecting 6000-23,000 sequences from each of the libraries (68,520 total sequences deposited in GenBank). Sequence comparison and assembly of these sequences was performed in combination with 56,500 other bovine EST sequences present in the GenBank dbEST database to construct a cattle Gene Index (available from The Institute for Genomic Research at http:\/\/www.tigr.org/tdb/tgi.shtml). The 124,381 bovine ESTs present in GenBank at the time of the analysis form 16,740 assemblies that are listed and annotated on the Web site. Analysis of individual library sequence data indicates that the pooled-tissue approach was highly effective in preparing libraries for efficient deep sequencing.
ESTHER : Smith_2001_Genome.Res_11_626
PubMedSearch : Smith_2001_Genome.Res_11_626
PubMedID: 11282978
Gene_locus related to this paper: bovin-abhd2 , bovin-abhd4 , bovin-balip , bovin-LPLA2 , bovin-paf2 , bovin-ppme1 , bovin-q5e9h0 , bovin-ABHDA

Title : The DNA sequence of human chromosome 22 - Dunham_1999_Nature_402_489
Author(s) : Dunham I , Hunt AR , Collins JE , Bruskiewich R , Beare DM , Clamp M , Smink LJ , Ainscough R , Almeida JP , Babbage AK , Bagguley C , Bailey J , Barlow KF , Bates KN , Beasley OP , Bird CP , Blakey SE , Bridgeman AM , Buck D , Burgess J , Burrill WD , Burton J , Carder C , Carter NP , Chen Y , Clark G , Clegg SM , Cobley VE , Cole CG , Collier RE , Connor R , Conroy D , Corby NR , Coville GJ , Cox AV , Davis J , Dawson E , Dhami PD , Dockree C , Dodsworth SJ , Durbin RM , Ellington AG , Evans KL , Fey JM , Fleming K , French L , Garner AA , Gilbert JGR , Goward ME , Grafham DV , Griffiths MND , Hall C , Hall RE , Hall-Tamlyn G , Heathcott RW , Ho S , Holmes S , Hunt SE , Jones MC , Kershaw J , Kimberley AM , King A , Laird GK , Langford CF , Leversha MA , Lloyd C , Lloyd DM , Martyn ID , Mashreghi-Mohammadi M , Matthews LH , Mccann OT , Mcclay J , Mclaren S , McMurray AA , Milne SA , Mortimore BJ , Odell CN , Pavitt R , Pearce AV , Pearson D , Phillimore BJCT , Phillips SH , Plumb RW , Ramsay H , Ramsey Y , Rogers L , Ross MT , Scott CE , Sehra HK , Skuce CD , Smalley S , Smith ML , Soderlund C , Spragon L , Steward CA , Sulston JE , Swann RM , Vaudin M , Wall M , Wallis JM , Whiteley MN , Willey DL , Williams L , Williams SA , Williamson H , Wilmer TE , Wilming L , Wright CL , Hubbard T , Bentley DR , Beck S , Rogers J , Shimizu N , Minoshima S , Kawasaki K , Sasaki T , Asakawa S , Kudoh J , Shintani A , Shibuya K , Yoshizaki Y , Aoki N , Mitsuyama S , Roe BA , Chen F , Chu L , Crabtree J , Deschamps S , Do A , Do T , Dorman A , Fang F , Fu Y , Hu P , Hua A , Kenton S , Lai H , Lao HI , Lewis J , Lewis S , Lin S-P , Loh P , Malaj E , Nguyen T , Pan H , Phan S , Qi S , Qian Y , Ray L , Ren Q , Shaull S , Sloan D , Song L , Wang Q , Wang Y , Wang Z , White J , Willingham D , Wu H , Yao Z , Zhan M , Zhang G , Chissoe S , Murray J , Miller N , Minx P , Fulton R , Johnson D , Bemis G , Bentley D , Bradshaw H , Bourne S , Cordes M , Du Z , Fulton L , Goela D , Graves T , Hawkins J , Hinds K , Kemp K , Latreille P , Layman D , Ozersky P , Rohlfing T , Scheet P , Walker C , Wamsley A , Wohldmann P , Pepin K , Nelson J , Korf I , Bedell JA , Hillier L , Mardis E , Waterston R , Wilson R , Emanuel BS , Shaikh T , Kurahashi H , Saitta S , Budarf ML , McDermid HE , Johnson A , Wong ACC , Morrow BE , Edelmann L , Kim UJ , Shizuya H , Simon MI , Dumanski JP , Peyrard M , Kedra D , Seroussi E , Fransson I , Tapia I , Bruder CE , O'Brien KP
Ref : Nature , 402 :489 , 1999
Abstract : Knowledge of the complete genomic DNA sequence of an organism allows a systematic approach to defining its genetic components. The genomic sequence provides access to the complete structures of all genes, including those without known function, their control elements, and, by inference, the proteins they encode, as well as all other biologically important sequences. Furthermore, the sequence is a rich and permanent source of information for the design of further biological studies of the organism and for the study of evolution through cross-species sequence comparison. The power of this approach has been amply demonstrated by the determination of the sequences of a number of microbial and model organisms. The next step is to obtain the complete sequence of the entire human genome. Here we report the sequence of the euchromatic part of human chromosome 22. The sequence obtained consists of 12 contiguous segments spanning 33.4 megabases, contains at least 545 genes and 134 pseudogenes, and provides the first view of the complex chromosomal landscapes that will be found in the rest of the genome.
ESTHER : Dunham_1999_Nature_402_489
PubMedSearch : Dunham_1999_Nature_402_489
PubMedID: 10591208
Gene_locus related to this paper: human-CES5A , human-SERHL2

Title : Nervus terminalis ganglion of the bonnethead shark (Sphyrna tiburo): evidence for cholinergic and catecholaminergic influence on two cell types distinguished by peptide immunocytochemistry - White_1995_J.Comp.Neurol_351_385
Author(s) : White J , Meredith M
Ref : Journal of Comparative Neurology , 351 :385 , 1995
Abstract : The nervus terminalis is a ganglionated vertebrate cranial nerve of unknown function that connects the brain and the peripheral nasal structures. To investigate its function, we have studied nervus terminalis ganglion morphology and physiology in the bonnethead shark (Sphyrna tiburo), where the nerve is particularly prominent. Immunocytochemistry for gonadotropin-releasing hormone (GnRH) and Leu-Pro-Leu-Arg-Phe-NH2 (LPLRFamide) revealed two distinct populations of cells. Both were acetylcholinesterase positive, but LPLR-Famide-immunoreactive cells consistently stained more darkly for acetylcholinesterase activity. Tyrosine hydroxylase immunocytochemistry revealed fibers and terminal-like puncta in the ganglion, primarily in areas containing GnRH-immunoreactive cells. Consistent with the anatomy, in vitro electrophysiological recordings provided evidence for cholinergic and catecholaminergic actions. In extracellular recordings, acetylcholine had a variable effect on baseline ganglion cell activity, whereas norepinephrine consistently reduced activity. Electrical stimulation of the nerve trunks suppressed ganglion activity, as did impulses from the brain in vivo. During electrical suppression, acetylcholine consistently increased activity, and norepinephrine decreased activity. Muscarinic and, to a lesser extent, alpha-adrenergic antagonists both increased activity during the electrical suppression, suggesting involvement of both systems. Intracellular recordings revealed two types of ganglion cells that were distinguishable pharmacologically and physiologically. Some cells were hyperpolarized by cholinergic agonists and unaffected by norepinephrine; these cells did not depolarize with peripheral nerve trunk stimulation. Another group of cells did depolarize with peripheral trunk stimulation; a representative of this group was depolarized by carbachol and hyperpolarized by norepinephrine. These and other data suggest that the bonnethead nervus terminalis ganglion contains at least two cell populations that respond differently to acetylcholine and norepinephrine. The bonnethead nervus terminalis ganglion appears to differ fundamentally from sensory and autonomic ganglia but does share some features with the neural circuits of forebrain GnRH systems.
ESTHER : White_1995_J.Comp.Neurol_351_385
PubMedSearch : White_1995_J.Comp.Neurol_351_385
PubMedID: 7706549