Johnson A

References (8)

Title : Assessment of the impacts of GABA and AChE targeting pesticides on freshwater invertebrate family richness in English Rivers - Poyntz-Wright_2023_Sci.Total.Environ__169079
Author(s) : Poyntz-Wright IP , Harrison XA , Johnson A , Zappala S , Tyler CR
Ref : Sci Total Environ , :169079 , 2023
Abstract : Globally, riverine system biodiversity is threatened by a range of stressors, spanning pollution, sedimentation, alterations to water flow, and climate change. Pesticides have been associated with population level impacts on freshwater invertebrates for acute high-level exposures, but far less is known about the chronic impact of episodic exposure to specific classes of pesticides or their mixtures. Here we employed the use of the UK Environment Agency's monitoring datasets over 40 years (covering years 1980 to 2019) to assess the impacts of AChE (acetylcholinesterase) and GABA (gamma-aminobutyric acid) receptor targeting pesticides on invertebrate family richness at English river sites. Concentrations of AChE and GABA pesticides toxic to freshwater invertebrates occurred (measured) across 18 of the 66 river sites assessed. For one of the three river sites (all found in the Midlands region of England) where data recorded over the past 40 years were sufficient for robust modelling studies, both AChE and GABA pesticides associated with invertebrate family richness. Here, where AChE total pesticide concentrations were classified as high, 46 of 64 invertebrate families were absent, and where GABA total pesticide concentration were classified as high, 16 of 64 invertebrate families were absent. Using a combination of field evidence and laboratory toxicity thresholds for population relevant endpoints we identify families of invertebrates most at risk in the selected English rivers to AChE and GABA pesticides. We, furthermore, provide strong evidence that the absence of the invertebrate family Polycentropodidae (caddisfly) from one field site is due to exposure effects to AChE pesticides.
ESTHER : Poyntz-Wright_2023_Sci.Total.Environ__169079
PubMedSearch : Poyntz-Wright_2023_Sci.Total.Environ__169079
PubMedID: 38049000

Title : Stereodivergent synthesis of the LFA-1 antagonist BIRT-377 by porcine liver esterase desymmetrization and Curtius rearrangement - Johnson_2015_Org.Biomol.Chem_13_1463
Author(s) : Johnson A , Saunders MJ , Back TG
Ref : Org Biomol Chem , 13 :1463 , 2015
Abstract : The LFA-1 inhibitor and leukocyte adhesion suppressor BIRT-377 was prepared in high enantiomeric excess by desymmetrization of dimethyl 2-p-bromobenzyl-2-methylmalonate, followed by condensation of the resulting carboxylic acid with 3,5-dichloroaniline, saponification of the remaining ester and Curtius rearrangement as the key steps. When Curtius rearrangement preceded the condensation step, (ent)-BIRT-377 was similarly obtained in high ee.
ESTHER : Johnson_2015_Org.Biomol.Chem_13_1463
PubMedSearch : Johnson_2015_Org.Biomol.Chem_13_1463
PubMedID: 25474271

Title : Cholinesterase inhibitors: an example of geographic variation in prescribing patterns within a drug class -
Author(s) : Fong RK , Johnson A , Gill SS
Ref : Int J Geriatr Psychiatry , 30 :220 , 2015
PubMedID: 25639835

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 : Sequence and analysis of chromosome 4 of the plant Arabidopsis thaliana - Mayer_1999_Nature_402_769
Author(s) : Mayer K , Schuller C , Wambutt R , Murphy G , Volckaert G , Pohl T , Dusterhoft A , Stiekema W , Entian KD , Terryn N , Harris B , Ansorge W , Brandt P , Grivell L , Rieger M , Weichselgartner M , de Simone V , Obermaier B , Mache R , Muller M , Kreis M , Delseny M , Puigdomenech P , Watson M , Schmidtheini T , Reichert B , Portatelle D , Perez-Alonso M , Boutry M , Bancroft I , Vos P , Hoheisel J , Zimmermann W , Wedler H , Ridley P , Langham SA , McCullagh B , Bilham L , Robben J , Van der Schueren J , Grymonprez B , Chuang YJ , Vandenbussche F , Braeken M , Weltjens I , Voet M , Bastiaens I , Aert R , Defoor E , Weitzenegger T , Bothe G , Ramsperger U , Hilbert H , Braun M , Holzer E , Brandt A , Peters S , van Staveren M , Dirske W , Mooijman P , Klein Lankhorst R , Rose M , Hauf J , Kotter P , Berneiser S , Hempel S , Feldpausch M , Lamberth S , Van den Daele H , De Keyser A , Buysshaert C , Gielen J , Villarroel R , De Clercq R , van Montagu M , Rogers J , Cronin A , Quail M , Bray-Allen S , Clark L , Doggett J , Hall S , Kay M , Lennard N , McLay K , Mayes R , Pettett A , Rajandream MA , Lyne M , Benes V , Rechmann S , Borkova D , Blocker H , Scharfe M , Grimm M , Lohnert TH , Dose S , de Haan M , Maarse A , Schafer M , Muller-Auer S , Gabel C , Fuchs M , Fartmann B , Granderath K , Dauner D , Herzl A , Neumann S , Argiriou A , Vitale D , Liguori R , Piravandi E , Massenet O , Quigley F , Clabauld G , Mundlein A , Felber R , Schnabl S , Hiller R , Schmidt W , Lecharny A , Aubourg S , Chefdor F , Cooke R , Berger C , Montfort A , Casacuberta E , Gibbons T , Weber N , Vandenbol M , Bargues M , Terol J , Torres A , Perez-Perez A , Purnelle B , Bent E , Johnson S , Tacon D , Jesse T , Heijnen L , Schwarz S , Scholler P , Heber S , Francs P , Bielke C , Frishman D , Haase D , Lemcke K , Mewes HW , Stocker S , Zaccaria P , Bevan M , Wilson RK , de la Bastide M , Habermann K , Parnell L , Dedhia N , Gnoj L , Schutz K , Huang E , Spiegel L , Sehkon M , Murray J , Sheet P , Cordes M , Abu-Threideh J , Stoneking T , Kalicki J , Graves T , Harmon G , Edwards J , Latreille P , Courtney L , Cloud J , Abbott A , Scott K , Johnson D , Minx P , Bentley D , Fulton B , Miller N , Greco T , Kemp K , Kramer J , Fulton L , Mardis E , Dante M , Pepin K , Hillier L , Nelson J , Spieth J , Ryan E , Andrews S , Geisel C , Layman D , Du H , Ali J , Berghoff A , Jones K , Drone K , Cotton M , Joshu C , Antonoiu B , Zidanic M , Strong C , Sun H , Lamar B , Yordan C , Ma P , Zhong J , Preston R , Vil D , Shekher M , Matero A , Shah R , Swaby IK , O'Shaughnessy A , Rodriguez M , Hoffmann J , Till S , Granat S , Shohdy N , Hasegawa A , Hameed A , Lodhi M , Johnson A , Chen E , Marra M , Martienssen R , McCombie WR
Ref : Nature , 402 :769 , 1999
Abstract : The higher plant Arabidopsis thaliana (Arabidopsis) is an important model for identifying plant genes and determining their function. To assist biological investigations and to define chromosome structure, a coordinated effort to sequence the Arabidopsis genome was initiated in late 1996. Here we report one of the first milestones of this project, the sequence of chromosome 4. Analysis of 17.38 megabases of unique sequence, representing about 17% of the genome, reveals 3,744 protein coding genes, 81 transfer RNAs and numerous repeat elements. Heterochromatic regions surrounding the putative centromere, which has not yet been completely sequenced, are characterized by an increased frequency of a variety of repeats, new repeats, reduced recombination, lowered gene density and lowered gene expression. Roughly 60% of the predicted protein-coding genes have been functionally characterized on the basis of their homology to known genes. Many genes encode predicted proteins that are homologous to human and Caenorhabditis elegans proteins.
ESTHER : Mayer_1999_Nature_402_769
PubMedSearch : Mayer_1999_Nature_402_769
PubMedID: 10617198
Gene_locus related to this paper: arath-AT4G00500 , arath-AT4G16690 , arath-AT4G17480 , arath-AT4G24380 , arath-AT4g30610 , arath-o65513 , arath-o65713 , arath-LPAAT , arath-f4jt64

Title : alpha-Conotoxin GI produces tetanic fade at the rat neuromuscular junction - Blount_1992_Toxicon_30_835
Author(s) : Blount K , Johnson A , Prior C , Marshall IG
Ref : Toxicon , 30 :835 , 1992
Abstract : The ability of the marine snail toxin, alpha-conotoxin GI, to produce blockade of singly evoked twitches and to produce tetanic and train-of-four fade has been determined in the isolated rat hemidiaphragm preparation. Results were compared to those obtained with a reversible (vecuronium) and an irreversible (alpha-bungarotoxin) nicotinic acetylcholine antagonist and have been interpreted in terms of relative effects on post- and prejunctional nicotinic acetylcholine receptors at the neuromuscular junction. alpha-Conotoxin GI (0.5-2 microM) produced a concentration-dependent, readily reversible, decrease in the peak amplitude of single twitches and 50 Hz tetani, and an increase in tetanic and train-of-four fade. alpha-Conotoxin GI was consistently 2-3-fold more potent than vecuronium with respect to all of the measured tension parameters. Both alpha-conotoxin GI and vecuronium were approximately 2-fold more potent in producing tetanic fade and in blocking tetanic contractions than in blocking single twitches. In contrast to both alpha-conotoxin GI and vecuronium, alpha-bungarotoxin (0.13 microM) reduced the peak amplitude of both single twitches and 50 Hz tetani to the same extent without the appearance of a large degree of tetanic or train-of-four fade. Based on a comparison of the in vitro time course of neuromuscular block and of the relative effects of vecuronium, alpha-conotoxin GI and alpha-bungarotoxin on twitches, tetani and trains-of-four, we conclude that alpha-conotoxin GI has both pre- and postjunctional activity at the neuromuscular junction. In this respect, alpha-conotoxin GI resembles the clinically used competitive neuromuscular blocking drugs rather than the irreversible snake alpha-neurotoxins.
ESTHER : Blount_1992_Toxicon_30_835
PubMedSearch : Blount_1992_Toxicon_30_835
PubMedID: 1355934

Title : Acute haemodialysis during the Armenian earthquake disaster - Tattersall_1990_Injury_21_25
Author(s) : Tattersall JE , Richards NT , McCann M , Mathias T , Samson A , Johnson A
Ref : Injury , 21 :25 , 1990
Abstract : On the 7 December 1988 an earthquake struck a densely populated region in northern Armenia. Up to 50,000 people were killed and many thousands were seriously injured. At least 385 of these casualties developed acute renal failure secondary to crush syndrome and required dialysis. The Armenian renal unit at Yerevan, in common with units elsewhere, was already overstretched to cope with the dialysis requirements of their patients with chronic renal failure before the earthquake. Most of the patients requiring dialysis were transferred to other hospitals in the USSR but 120 patients remained in Yerevan, the majority at the regional renal unit, overwhelming the resources. We assisted by taking a team of dialysis personnel, equipped with portable haemodialysis machines, to Yerevan. We performed 57 haemodialysis sessions and treated 15 patients, 13 of whom ultimately survived. Valuable lessons were learnt about the medical management of disasters abroad.
ESTHER : Tattersall_1990_Injury_21_25
PubMedSearch : Tattersall_1990_Injury_21_25
PubMedID: 2140820

Title : Selective blockade of receptor-mediated cyclic GMP formation in N1E-115 neuroblastoma cells by an inhibitor of nitric oxide synthesis -
Author(s) : McKinney M , Bolden C , Smith C , Johnson A , Richelson E
Ref : European Journal of Pharmacology , 178 :139 , 1990
PubMedID: 2158898