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Bond D.J.,University of British Columbia | Hadjipavlou G.,University of British Columbia | Lam R.W.,University of British Columbia | McIntyre R.S.,University of Toronto | And 3 more authors.
Annals of Clinical Psychiatry | Year: 2012

BACKGROUND: Patients with bipolar disorder (BD) and major depressive disorder (MDD) experience adult attention-deficit/hyperactivity disorder (ADHD) at rates substantially greater than the general population. Nonetheless, ADHD frequently goes untreated in this population. METHODS: We reviewed the literature regarding the management of adult ADHD in patients with mood disorders. Because a limited number of studies have been conducted in adults, our treatment recommendations also are partly informed by research in children and adolescents with BD+ADHD or MDD+ADHD, adults with ADHD, and our clinical experience. RESULTS: In individuals with mood disorders, ADHD is best diagnosed when typical symptoms persist during periods of sustained euthymia. Individuals with BD+ADHD, particularly those with bipolar I disorder (BD I), are at risk for mood destabilization with many ADHD treatments, and should be prescribed mood-stabilizing medications before initiating ADHD therapies. Bupropion is a reasonable first-line treatment for BD+ADHD, while mixed amphetamine salts and methylphenidate also may be considered in patients determined to be at low risk for manic switch. Modafinil and cognitive-behavioral therapy (CBT) are second-line choices. In patients with MDD+ADHD and moderate to severe depression, MDD should be the treatment priority, whereas in mildly depressed or euthymic patients the order may be reversed. First-line treatments for MDD+ADHD include bupropion, an antidepressant plus a long-acting stimulant, or an antidepressant plus CBT. Desipramine, nortriptyline, and venlafaxine are second-line options. CONCLUSIONS: Clinicians should be vigilant in screening for comorbid ADHD in mood disorder patients. ADHD symptoms can respond to appropriately chosen treatments. Source


Jackson H.A.,University of British Columbia | Mcintosh S.,University of British Columbia | Whittome B.,University of British Columbia | Asuri S.,University of British Columbia | And 4 more authors.
Clinical Genetics | Year: 2014

Long QT syndrome (LQTS), a rare congenital cardiac condition associated with life-threatening ventricular arrhythmias is characterized by a prolonged QT interval on electrocardiograph corrected for heart rate [corrected QT (QTc)]. LQTS has been historically categorized into the autosomal dominant Romano-Ward syndrome (RWS) and the autosomal recessive Jervell and Lange-Nielsen syndrome (JLNS). JLNS is associated with prelingual sensorineural deafness. Both types of LQTS can be caused by mutations in channel genes (e.g. KCNQ1) responsible for potassium homeostasis in cardiac myocytes and cochlea. Autosomal dominant mutations often cause the RWS phenotype and homozygous or compound heterozygous mutations contribute to JLNS. Two First Nations communities in northern British Columbia are affected disproportionately with LQTS largely due to the V205M mutation in KCNQ1, however, the pathology and phenotypic expression for those V205M homozygous has been unknown. Here, we show that four V205M homozygous individuals have a significantly higher 'peak' QTc, and a more severe cardiac phenotype compared with 41 V205M heterozygous carriers and 57 first to third degree relatives without mutations. Given the lack of prelingual deafness the homozygous V205M LQTS patients present with a phenotype more typical of RWS than JLNS. © 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. Source


Ponger P.,Tel Aviv Sourasky Medical Center | Ben-Sira L.,Tel Aviv Sourasky Medical Center | Ben-Sira L.,Tel Aviv University | Beni-Adani L.,Tel Aviv University | And 4 more authors.
Child's Nervous System | Year: 2010

Objectives: We designed a survey to investigate current international management trends of neonates with lumbar midline skin stigmata suspicious of tethered cord, among pediatric neurosurgeons, focusing on the lower risk stigmata, simple dimples, deviated gluteal folds, and discolorations. Our findings will enable physicians to assess their current diagnosis routine and aid in clarifying management controversies. Study design: A questionnaire on the proposed diagnostic evaluation of seven case reports, each accompanied by relevant imaging, was distributed by e-mail to members of the International Society for Pediatric Neurosurgery, the European Society for Pediatric Neurosurgery, and via the PEDS server list between March and August 2008. Results: Sixty-two questionnaires, completed by experienced professionals with a rather uniform distribution of experience levels, were analyzed. Forty-eight percent do not recommend any imaging of simple dimples, 30% recommend US screening and 22% recommend MR. Seventy-nine percent recommend imaging of deviated gluteal fold with 30% recommending MR. Ninety-two percent recommend imaging infants with hemangiomas with 74% recommending MR. MR for sinus tracts is recommended by 90% if sacral and by 98% if lumber. Eighty-four percent recommend MR for filar cyst. Conclusions: Our survey demonstrates that management of low-risk skin stigmata, simple dimple, deviated gluteal fold, and discolorations lacks consensus. In addition, a significant sector of the professional community proposes a work-up of simple dimples, sacral tracts, and filar cysts that contradicts established recommendations. A simple classification system is needed to attain a better approach, enabling correct diagnosis of tethered cord without exposing neonates to unnecessary examinations. © 2010 Springer-Verlag. Source


Mataseje L.F.,Public Health Agency of Canada | Boyd D.A.,Public Health Agency of Canada | Lefebvre B.,Laboratoire Of Sante Publique Du Quebec | Bryce E.,Vancouver General Hospital | And 39 more authors.
Journal of Antimicrobial Chemotherapy | Year: 2014

Objectives: Emergence of plasmids harbouring blaNDM-1 is a major public health concern due to their association with multidrug resistance and their potential mobility. Methods: PCRwas used to detect blaNDM-1 from clinical isolates of Providencia rettgeri (PR) and Klebsiella pneumoniae (KP). Antimicrobial susceptibilities were determined using Vitek 2. The completeDNAsequence of two blaNDM-1 plasmids (pPrY2001 and pKp11-42) was obtained using a 454-Genome Sequencer FLX. Contig assembly and gap closures were confirmed by PCR-based sequencing. Comparative analysis was done using BLASTn and BLASTp algorithms. Results: Both clinical isolates were resistant to all β-lactams, carbapenems, aminoglycosides, ciprofloxacin and trimethoprim/ sulfamethoxazole, and susceptible to tigecycline. Plasmid pPrY2001 (113295 bp)was isolated fromPR. It didnot showsignificanthomologytoany knownplasmidbackboneandcontainedatruncatedrepAandnovel repB. TwoblaNDM-1-harbouringplasmids fromAcinetobacter lwoffii (JQ001791andJQ060896) shared100%similaritytoa 15 kb region that contained blaNDM-1. pPrY2001 also contained a type II toxin/antitoxin system. pKp11-42 (146695 bp) was isolated fromKP. It containedmultiple repA genes. The plasmid backbone had the highest homology to the IncFIIk plasmid type (51% coverage, 100% nucleotide identity). The blaNDM-1 region was unique in that it was flanked upstream by IS3000 and downstream by a novel transposon designated Tn6229. pKp11-42 also contained a number of mutagenesis and plasmid stability proteins. Conclusions: pPrY2001differedfromall known plasmidsdue toitsnovelbackboneandrepB. pKp11-42wassimilar to IncFIIk plasmids and contained a number of genes that aid in plasmid persistence. © Crown copyright 2013. Source


McCracken M.,Public Health Agency of Canada | Wong A.,Royal University | Mitchell R.,Public Health Agency of Canada | Gravel D.,Public Health Agency of Canada | And 50 more authors.
Journal of Antimicrobial Chemotherapy | Year: 2013

Objectives: Vancomycin-resistant enterococci (VRE) can be associated with serious bacteraemia. The focus of this study was to characterize the molecular epidemiology of VRE from bacteraemia cases that were isolated from 1999 to 2009 as part of Canadian Nosocomial Infection Surveillance Program (CNISP) surveillance activities. Methods: From 1999 to 2009, enterococci were collected from across Canada in accordance with the CNISP VRE surveillance protocol. MICs were determined using broth microdilution. PCR was used to identify vanA, B, C, D, E, G and L genes. Genetic relatedness was examined using multilocus sequence typing (MLST). Results: A total of 128 cases of bacteraemia were reported to CNISP from 1999 to 2009. In 2007, a significant increase in bacteraemia rates was observed in western and central Canada. Eighty-one of the 128 bacteraemia isolates were received for further characterization and were identified as Enterococcus faecium. The majority of isolates were from western Canada (60.5%), followed by central (37.0%) and eastern (2.5%) Canada. Susceptibilities were as follows: daptomycin, linezolid, tigecycline and chloramphenicol, 100%; quinupristin/dalfopristin, 96.3%; high-level gentamicin, 71.6%; tetracycline, 50.6%; high-level streptomycin, 44.4%; rifampicin, 21.0%; nitrofurantoin, 11.1%; clindamycin, 8.6%; ciprofloxacin, levofloxacin and moxifloxacin, 1.2%; and ampicillin, 0.0%. vanA contributed to vancomycin resistance in 90.1% of isolates and vanB in 9.9%. A total of 17 sequence types (STs) were observed. Beginning in 2006 there was a shift in ST from ST16, ST17, ST154 and ST80 to ST18, ST412, ST203 and ST584. Conclusions: The increase in bacteraemia observed since 2007 in western and central Canada appears to coincide with the shift of MLST STs. All VRE isolates remained susceptible to daptomycin, linezolid, chloramphenicol and tigecycline. © Crown copyright 2013. Source

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