The molecular cloning and characterisation of cDNA coding for the alpha subunit of the acetylcholine receptor

The published version of this article is available at Oxford Journals in Nucleic Acids Research at http://nar.oxfordjournals.org/content/10/19/5809.full.pdf+htmlA rare cDNA coding for most of the α subunit of the Torpedo nicotinic acetylcholine receptor has been cloned into bacteria. The use of a mismatched oligonucleotide primer of reverse transcriptase facilitated the design of an efficient, specific probe for recombinant bacteria. DNA sequence analysis has enabled the elucidation of a large part of the polypeptide primary sequence which is discussed in relation to its acetylcholine binding activity and the location of receptor within the plasma membrane. When used as a radioactive probe, the cloned cDNA binds specifically to a single Torpedo mRNA species of about 2350 nucleotides in length but fails to show significant cross-hybridisation with a subunit mRNA extracted from cat muscle

The influence of social support on the lived experiences of spinal cord injured sportsmen.

© 2003 Human Kinetics, Incas accepted for publicationThis study draws upon life history data to investigate the influence of social support on the lives of 6 men who had acquired a spinal cord injury and become disabled through playing sport. Interviews were analyzed utilizing categorical-content analysis (Lieblich, Tuval-Mashiach, & Zilber, 1998). The participants experienced emotional, esteem, informational, and tangible support (Rees & Hardy, 2000) from various sources. Alongside the positive influence of social support, examples are shown of inappropriate or negatively-experienced support and where participants considered sport to be lacking. The spinal cord injured person is encouraged to be proactive in resourcing social support, but providers might also be taught to recognize the impact, either positively or negatively, that their giving support can have

Medical inpatient mortality at Groote Schuur Hospital, Cape Town, 2002 - 2009

Background. Despite the challenges facing healthcare in South Africa, empirical insights into the performance of healthcare services overtime are scarce.Methods. We analysed first admissions of adult medical inpatients to Groote Schuur Hospital, Cape Town, from January 2002 to July 2009.Data included age, sex, medical specialty, and date of admission and discharge. We used population group and hospital billing codes asproxy measures for socio-economic status (SES). We calculated the duration of stay in days from the date of admission to discharge, andinpatient mortality rates per 1 000 patient days. Poisson regression was used to estimate mortality rate ratios (MRR) in unadjusted analysisand after adjusting for potential confounders.Results. There were 42 582 first admissions. Patient demographics shifted towards a lower SES. Median age decreased from 52 years in 2002to 49 years in 2009, while patients aged 20 - 39 years increased in proportion from 26% to 31%. The unadjusted proportion of admissionswhich resulted in in-hospital deaths increased from 12% in 2002 to 17% in 2009. Corresponding mortality rates per 1 000 patient days were 17.0 (95% confidence interval (CI) 15.9 - 18.3) and 23.4 (95% CI 21.6 - 25.4), respectively (unadjusted MRR 1.37; 95% CI 1.23 - 1.53). Annual increases in mortality rates were highest during the first 2 days following admission (increasing from 30.1 to 50.3 deaths per 1 000), and were associated with increasing age, non-paying patient status, black population group and male sex, and were greatest in the emergency ward (adjusted MRR 1.73, comparing 2009 with 2002; 95% CI 1.49 - 2.01).Discussion. Increasing medical inpatient mortality rates at a large South African academic hospital were most marked during the first 2 days after admission and appeared greatest among emergency medical inpatients

Narrowing the Gap? Describing women's outcomes in Midwifery Group Practice in remote Australia

© 2016 Australian College of Midwives Background In Australia, Aboriginal women and babies experience higher maternal and perinatal morbidity and mortality rates than their non-Aboriginal counterparts. Whilst midwifery led continuity of care has been shown to be safe for women and their babies, with benefits including reducing the preterm birth rate, access to this model of care in remote areas remains limited. A Midwifery Group Practice was established in 2009 in a remote city of the Northern Territory, Australia, with the aim of improving outcomes and access to midwifery continuity of care. Aim The aim of this paper is to describe the maternal and newborn outcomes for women accessing midwifery continuity of care in a remote context in Australia. Methods A retrospective descriptive design using data from two existing electronic databases was undertaken and analysed descriptively. Findings In total, 763 women (40% of whom were Aboriginal) gave birth to 769 babies over a four year period. There were no maternal deaths and the rate of perinatal mortality was lower than that across the Northern Territory. Lower rates of preterm birth (6%) and low birth weight babies (5%) were found in comparison to population based data. Conclusion Continuity of Midwifery Care can be effectively provided to remote dwelling Aboriginal women and appears to improve outcomes for women and their infants

Drosophila nuclear lamin precursor Dm0 is translated from either of two developmentally regulated mRNA species apparently encoded by a single gene.

A cDNA clone encoding a portion of Drosophila nuclear lamins Dm1 and Dm2 has been identified by screening a lambda-gt11 cDNA expression library using Drosophila lamin-specific monoclonal antibodies. Two different developmentally regulated mRNA species were identified by Northern blot analysis using the initial cDNA as a probe, and full-length cDNA clones, apparently corresponding to each message, have been isolated. In vitro transcription of both full-length cDNA clones in a pT7 transcription vector followed by in vitro translation in wheat germ lysate suggests that both clones encode lamin Dm0, the polypeptide precursor of lamins Dm1 and Dm2. Nucleotide sequence analyses confirm the impression that both cDNA clones code for the identical polypeptide, which is highly homologous with human lamins A and C as well as with mammalian intermediate filament proteins. The two clones differ in their 3'-untranslated regions. In situ hybridization of lamin cDNA clones to Drosophila polytene chromosomes shows only a single locus of hybridization at or near position 25F on the left arm of chromosome 2. Southern blot analyses of genomic DNA are consistent with the notion that a single or only a few highly similar genes encoding Drosophila nuclear lamin Dm0 exist in the genome

Searching for emotion or race: Task-irrelevant facial cues have asymmetrical effects

Journal ArticleFacial cues of threat such as anger and other race membership are detected preferentially in visual search tasks. However, it remains unclear whether these facial cues interact in visual search. If both cues equally facilitate search, a symmetrical interaction would be predicted; anger cues should facilitate detection of other race faces and cues of other race membership should facilitate detection of anger. Past research investigating this race by emotional expression interaction in categorisation tasks revealed an asymmetrical interaction. This suggests that cues of other race membership may facilitate the detection of angry faces but not vice versa. Utilising the same stimuli and procedures across two search tasks, participants were asked to search for targets defined by either race or emotional expression. Contrary to the results revealed in the categorisation paradigm, cues of anger facilitated detection of other race faces whereas differences in race did not differentially influence detection of emotion targets. © 2013 Taylor & Francis.Australian Research Council's Discovery Project

Sympathetic and swap cooling of trapped ions by cold atoms in a MOT

A mixed system of cooled and trapped, ions and atoms, paves the way for ion assisted cold chemistry and novel many body studies. Due to the different individual trapping mechanisms, trapped atoms are significantly colder than trapped ions, therefore in the combined system, the strong binary ion$-$atom interaction results in heat flow from ions to atoms. Conversely, trapped ions can also get collisionally heated by the cold atoms, making the resulting equilibrium between ions and atoms intriguing. Here we experimentally demonstrate, Rubidium ions (Rb$^+$) cool in contact with magneto-optically trapped (MOT) Rb atoms, contrary to the general expectation of ion heating for equal ion and atom masses. The cooling mechanism is explained theoretically and substantiated with numerical simulations. The importance of resonant charge exchange (RCx) collisions, which allows swap cooling of ions with atoms, wherein a single glancing collision event brings a fast ion to rest, is discussed.Comment: 10 pages, 3 figure

Outcomes following autologous hematopoietic stem cell transplant for patients with relapsed Wilms' tumor: a CIBMTR retrospective analysis.

Despite the marked improvement in the overall survival (OS) for patients diagnosed with Wilms' tumor (WT), the outcomes for those who experience relapse have remained disappointing. We describe the outcomes of 253 patients with relapsed WT who received high-dose chemotherapy (HDT) followed by autologous hematopoietic stem cell transplant (HCT) between 1990 and 2013, and were reported to the Center for International Blood and Marrow Transplantation Research. The 5-year estimates for event-free survival (EFS) and OS were 36% (95% confidence interval (CI); 29-43%) and 45% (95 CI; 38-51%), respectively. Relapse of primary disease was the cause of death in 81% of the population. EFS, OS, relapse and transplant-related mortality showed no significant differences when broken down by disease status at transplant, time from diagnosis to transplant, year of transplant or conditioning regimen. Our data suggest that HDT followed by autologous HCT for relapsed WT is well tolerated and outcomes are similar to those reported in the literature. As attempts to conduct a randomized trial comparing maintenance chemotherapy with consolidation versus HDT followed by stem cell transplant have failed, one should balance the potential benefits with the yet unknown long-term risks. As disease recurrence continues to be the most common cause of death, future research should focus on the development of consolidation therapies for those patients achieving complete response to therapy