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https://www.readbyqxmd.com/read/27922640/brain-network-reorganization-differs-in-response-to-stress-in-rats-genetically-predisposed-to-depression-and-stress-resilient-rats
#1
N Gass, R Becker, A J Schwarz, W Weber-Fahr, C Clemm von Hohenberg, B Vollmayr, A Sartorius
Treatment-resistant depression (TRD) remains a pressing clinical problem. Optimizing treatment requires better definition of the specificity of the involved brain circuits. The rat strain bred for negative cognitive state (NC) represents a genetic animal model of TRD with high face, construct and predictive validity. Vice versa, the positive cognitive state (PC) strain represents a stress-resilient phenotype. Although NC rats show depressive-like behavior, some symptoms such as anhedonia require an external trigger, i...
December 6, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27872807/identification-of-the-stria-medullaris-thalami-using-diffusion-tensor-imaging
#2
Ryan B Kochanski, Robert Dawe, Daniel B Eddelman, Mehmet Kocak, Sepehr Sani
BACKGROUND: Deep brain stimulation (DBS) via anatomical targeting of white matter tracts defined by diffusion tensor imaging (DTI) may be a useful tool in the treatment of pathologic neurophysiologic circuits implicated in certain disease states like treatment resistant depression (TRD). We sought to determine if DTI could be used to define the stria medullaris thalami (SM), the major afferent white matter pathway to the lateral habenula (LHb), a thalamic nucleus implicated in the pathophysiology of TRD...
2016: NeuroImage: Clinical
https://www.readbyqxmd.com/read/27864716/single-incision-laparoscopic-surgery-increases-the-risk-of-unintentional-thermal-injury-from-the-monopolar-bovie-instrument-in-comparison-with-traditional-laparoscopy
#3
Nicole T Townsend, Edward L Jones, Doug Overbey, Bruce Dunne, Jennifer McHenry, Thomas N Robinson
BACKGROUND: Single-incision laparoscopic surgery (SILS) places multiple instruments in close, parallel proximity, an orientation that may have implications in the production of stray current from the monopolar "Bovie" instrument. The purpose of this study was to compare the energy transferred during SILS compared to traditional four-port laparoscopic surgery (TRD). METHOD: In a laparoscopic simulator, instruments were inserted via SILS or TRD setup. The monopolar generator delivered energy to a laparoscopic L-hook instrument for 5-s activations on 30-Watts coag mode...
November 18, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27810712/sleep-architecture-parameters-as-a-putative-biomarker-of-suicidal-ideation-in-treatment-resistant-depression
#4
Rebecca A Bernert, David A Luckenbaugh, Wallace C Duncan, Naomi G Iwata, Elizabeth D Ballard, Carlos A Zarate
BACKGROUND: Disturbed sleep may confer risk for suicidal behaviors. Polysomnographic (PSG) sleep parameters have not been systematically evaluated in association with suicidal ideation (SI) among individuals with treatment-resistant depression (TRD). METHODS: This secondary data analysis included 54 TRD individuals (N=30 with major depressive disorder (MDD) and N=24 with bipolar depression (BD)). PSG sleep parameters included Sleep Efficiency (SE), Total Sleep Time (TST), Wakefulness After Sleep Onset (WASO), REM percent/latency, and non-REM (NREM) Sleep Stages 1-4...
October 14, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27807990/usefulness-of-repetitive-transcranial-magnetic-stimulation-as-a-maintenance-treatment-in-patients-with-major-depression
#5
Frédéric Haesebaert, Rémi Moirand, Anne-Marie Schott-Pethelaz, Jérôme Brunelin, Emmanuel Poulet
OBJECTIVE: To investigate the clinical efficacy of repetitive Transcranial Magnetic Stimulation (rTMS), venlafaxine or a combination of both treatments as a maintenance treatment in patients with treatment-resistant depression (TRD). METHODS: In a 3-arm open-label study, 66 patients, including 45 remitters, who responded to rTMS (n = 25), venlafaxine (n = 22), or a combination of both treatments (n = 19) continued to receive the treatment that led to a response as a maintenance treatment over 12-month...
November 3, 2016: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/27796193/il6-174g%C3%A2-%C3%A2-c-genetic-polymorphism-influences-antidepressant-treatment-outcome
#6
Serafim Carvalho, Marlene Santos, Luís Lima, Jorge Mota-Pereira, Paulo Pimentel, Dulce Maia, Diana Correia, Sofia Gomes, Agostinho Cruz, Rui Medeiros
BACKGROUND: Major depressive disorder is a condition associated with dysregulated cytokine levels; among these, IL6. Furthermore, genetic variations within cytokine genes have been proposed to predict antidepressant treatment outcome. OBJECTIVES: This study aims to evaluate the role of IL6-174G > C and IL6R D358A A > C functional polymorphisms in antidepressant treatment phenotypes, specifically remission, relapse, and treatment resistant depression (TRD)...
October 31, 2016: Nordic Journal of Psychiatry
https://www.readbyqxmd.com/read/27766398/enhanced-recovery-program-in-high-risk-patients-undergoing-colorectal-surgery-results-from-the-perioperative-italian-society-registry
#7
Marco Braga, Nicolò Pecorelli, Marco Scatizzi, Felice Borghi, Giancarlo Missana, Danilo Radrizzani
BACKGROUND: Enhanced recovery after surgery (ERAS) pathways represent the optimal approach for patients undergoing colorectal surgery. Elderly or low physical status patients have been often excluded from ERAS pathways because considered at high risk. The aim of this study is to assess the adherence to ERAS protocol and its impact on short-term postoperative outcome in patients with different surgical risk undergoing elective colorectal resection. METHODS: Prospectively collected data entered in an electronic Italian registry specifically designed for ERAS were reviewed...
October 20, 2016: World Journal of Surgery
https://www.readbyqxmd.com/read/27761157/current-topics-in-catecholaminergic-polymorphic-ventricular-tachycardia
#8
Naokata Sumitomo
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is induced by emotions or exercise in patients without organic heart disease and may be polymorphic or bidirectional in nature. The prognosis of CPVT is not good, and therefore prevention of sudden death is of utmost importance. Genetic variants of CPVT include RyR2, CASQ2, CALM2, TRD, and possibly KCNJ2 and ANK2 gene mutations. Hypotheses that suggest the causes of CPVT include weakened binding of FKBP12.6 and RyR2, a store overload-induced Ca(2+) release (SOICR), unzipping of intramolecular domain interactions in RyR2, and molecular and functional abnormalities caused by mutations in the CASQ2 gene...
October 2016: Journal of Arrhythmia
https://www.readbyqxmd.com/read/27754938/an-online-survey-of-dietary-and-phosphate-binder-practices-of-owners-of-cats-with-chronic-kidney-disease
#9
Sarah Ma Caney
OBJECTIVES: The objective of this study was to learn about owner experiences of chronic kidney disease (CKD), focusing on use of therapeutic renal diets (TRDs) and intestinal phosphate binders (IPBs). METHODS: An online survey was promoted to UK-based cat owners. RESULTS: In total, 859 owners participated. Most cats (n = 620; 72.18%) had two or more clinical signs at the time of their CKD diagnosis. Most common were polydipsia (n = 462; 53...
October 17, 2016: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/27721183/a-pilot-study-of-hippocampal-n-acetyl-aspartate-in-youth-with-treatment-resistant-major-depression
#10
Danielle Lefebvre, Lisa Marie Langevin, Natalia Jaworska, Ashley D Harris, R Marc Lebel, Yamile Jasaui, Adam Kirton, T Christopher Wilkes, Mariko Sembo, Rose Swansburg, Frank P MacMaster
BACKGROUND: Smaller hippocampal volumes, as assessed by magnetic resonance imaging (MRI), and proton magnetic resonance spectroscopy ((1)H-MRS) indexed alterations in brain metabolites have been identified in adults with major depressive disorder (MDD). Our group has found similar effects in MDD youth. However, this has not been studied in youth with treatment resistant MDD (TRD), nor has the interaction between regional N-acetyl-aspartate and volume deficits. N-acetyl-aspartate is an amino acid in the synthesis pathway of glutamate, and serves a marker of neuronal viability/number...
October 1, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27716050/erratum-to-genomic-and-expression-analyses-of-tursiops-truncatus-t-cell-receptor-gamma-trg-and-alpha-delta-tra-trd-loci-reveal-a-similar-basic-public-%C3%AE-%C3%AE-repertoire-in-dolphin-and-human
#11
Giovanna Linguiti, Rachele Antonacci, Gianluca Tasco, Francesco Grande, Rita Casadio, Serafina Massari, Vito Castelli, Arianna Consiglio, Marie-Paule Lefranc, Salvatrice Ciccarese
No abstract text is available yet for this article.
October 5, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27692695/adjunctive-5-hydroxytryptophan-slow-release-for-treatment-resistant-depression-clinical-and-preclinical-rationale
#12
Jacob P R Jacobsen, Andrew D Krystal, K Ranga R Krishnan, Marc G Caron
Serotonin transporter (SERT) inhibitors treat depression by elevating brain extracellular 5-hydroxytryptamine (5-HTExt). However, only one-third of patients respond adequately. Treatment-resistant depression (TRD) is a major unmet need. Interestingly, elevating 5-HTExt beyond what is achieved by a SERT inhibitor appears to treat TRD. Adjunctive administration of 5-hydroxytryptophan (5-HTP) safely elevates 5-HTExt beyond the SERT inhibitor effect in humans; however, 5-HTP cannot be a clinically viable drug because of its poor pharmacokinetics...
September 28, 2016: Trends in Pharmacological Sciences
https://www.readbyqxmd.com/read/27692010/exploring-a-post-traumatic-stress-disorder-paradigm-in-flinders-sensitive-line-rats-to-model-treatment-resistant-depression-ii-response-to-antidepressant-augmentation-strategies
#13
Sarel Jacobus Brand, Brian Herbert Harvey
OBJECTIVE: Post-traumatic stress disorder (PTSD) displays high co-morbidity with major depression and treatment-resistant depression (TRD). Earlier work demonstrated exaggerated depressive-like symptoms in a gene×environment model of TRD and an abrogated response to imipramine. We extended the investigation by studying the behavioural and monoaminergic response to multiple antidepressants, viz. venlafaxine and ketamine with/without imipramine. METHODS: Male Flinders sensitive line (FSL) rats, a genetic model of depression, were exposed to a time-dependent sensitisation (TDS) model of PTSD and compared with stress naive controls...
October 3, 2016: Acta Neuropsychiatrica
https://www.readbyqxmd.com/read/27659923/cognitive-outcome-after-ventral-capsule-ventral-striatum-stimulation-for-treatment-resistant-major-depression
#14
Cynthia S Kubu, Tim Brelje, Meryl A Butters, Thilo Deckersbach, Paul Malloy, Paul Moberg, Alexander I Tröster, Eric Williamson, Gordon H Baltuch, Mahendra T Bhati, Linda L Carpenter, Darin D Dougherty, Robert H Howland, Ali R Rezai, Donald A Malone
BACKGROUND: We report the neuropsychological outcome of 25 patients with treatment-resistant major depressive disorder (TRD) who participated in an Institutional Review Board (IRB)-approved randomised double-blind trial comparing active to sham deep brain stimulation (DBS) in the anterior limb of the ventral capsule/ventral striatum (VC/VS). METHODS: Participants were randomised to active (n=12) versus sham (n=13) DBS for 16 weeks. Data were analysed at the individual and group levels...
September 22, 2016: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/27650416/bayesian-analysis-of-parent-specific-transmission-ratio-distortion-in-seven-spanish-beef-cattle-breeds
#15
J Casellas, J J Cañas-Álvarez, A González-Rodríguez, A Puig-Oliveras, M Fina, J Piedrafita, A Molina, C Díaz, J A Baró, L Varona
Transmission ratio distortion (TRD) is the departure from the expected Mendelian ratio in offspring, a poorly investigated biological phenomenon in livestock species. Given the current availability of specific parametric methods for the analysis of segregation data, this study focused on the screening of TRD in 602 402 single nucleotide polymorphisms covering all autosomal chromosomes in seven Spanish beef cattle breeds. On average, 0.13% (n = 786) and 0.01% (n = 29) of genetic markers evidenced sire- or dam-specific TRD respectively...
September 21, 2016: Animal Genetics
https://www.readbyqxmd.com/read/27630667/analysis-of-case-parent-trios-using-a-loglinear-model-with-adjustment-for-transmission-ratio-distortion
#16
Lam O Huang, Claire Infante-Rivard, Aurélie Labbe
Transmission of the two parental alleles to offspring deviating from the Mendelian ratio is termed Transmission Ratio Distortion (TRD), occurs throughout gametic and embryonic development. TRD has been well-studied in animals, but remains largely unknown in humans. The Transmission Disequilibrium Test (TDT) was first proposed to test for association and linkage in case-trios (affected offspring and parents); adjusting for TRD using control-trios was recommended. However, the TDT does not provide risk parameter estimates for different genetic models...
2016: Frontiers in Genetics
https://www.readbyqxmd.com/read/27622933/analysis-of-23andme-antidepressant-efficacy-survey-data-implication-of-circadian-rhythm-and-neuroplasticity-in-bupropion-response
#17
Q S Li, C Tian, G R Seabrook, W C Drevets, V A Narayan
Genetic predisposition may contribute to the differences in drug-specific, class-specific or antidepressant-wide treatment resistance. Clinical studies with the genetic data are often limited in sample sizes. Drug response obtained from self-reports may offer an alternative approach to conduct a study with much larger sample size. Using the phenotype data collected from 23andMe 'Antidepressant Efficacy and Side Effects' survey and genotype data from 23andMe's research participants, we conducted genome-wide association study (GWAS) on subjects of European ancestry using four groups of phenotypes (a) non-treatment-resistant depression (n=7795) vs treatment-resistant depression (TRD, n=1311), (b) selective serotonin reuptake inhibitors (SSRI) responders (n=6348) vs non-responders (n=3340), (c) citalopram/escitalopram responders (n=2963) vs non-responders (n=2005), and (d) norepinephrine-dopamine reuptake inhibitor (NDRI, bupropion) responders (n=2675) vs non-responders (n=1861)...
September 13, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27600450/treatment-resistant-major-depressive-disorder-with-psychotic-features-is-associated-with-impaired-processing-speed
#18
Hanna Leinola, Kirsi Honkalampi, Tuomo Hänninen, Heli Koivumaa-Honkanen, Soili M Lehto, Anu Ruusunen, Heimo Viinamäki, Minna Valkonen-Korhonen
OBJECTIVE: A proportion of patients with major depressive disorder (MDD) show cognitive impairment that is associated with treatment nonresponse and poorer functional recovery. A broader range of cognitive dysfunction has been found to be associated with treatment-resistant depression (TRD) and with the presence of psychotic symptoms. Thus far, the effects of psychotic symptoms on the neuropsychological profile of patients with treatment-resistant MDD have not been investigated. METHOD: In the present study, 44 treatment-resistant MDD patients with (n = 12) or without (n = 32) psychotic symptoms-based on the Structured Clinical Interview (SCID I)-were compared with regard to their clinical status and performance in a neuropsychological test battery...
September 6, 2016: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/27591914/clinicians-views-on-treatment-resistant-depression-2016-survey-reports
#19
EDITORIAL
Katarina Arandjelovic, Harris A Eyre, Helen Lavretsky
BACKGROUND: There is a relative paucity of information on both empirical and subjective treatment strategies for treatment-resistant depression (TRD), especially in late life. This paper reviews the findings from two 2016 surveys conducted through the American Psychiatric Association publication the Psychiatric Times and via a member survey by the American Association for Geriatric Psychiatry (AAGP). METHODS: We present the results of the two surveys in terms of descriptive frequencies and percentages and discuss the strengths and weaknesses of various approaches to late-life TRD...
October 2016: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/27580720/novel-m4c-modification-in-type-i-restriction-modification-systems
#20
Richard D Morgan, Yvette A Luyten, Samuel A Johnson, Emily M Clough, Tyson A Clark, Richard J Roberts
We identify a new subgroup of Type I Restriction-Modification enzymes that modify cytosine in one DNA strand and adenine in the opposite strand for host protection. Recognition specificity has been determined for ten systems using SMRT sequencing and each recognizes a novel DNA sequence motif. Previously characterized Type I systems use two identical copies of a single methyltransferase (MTase) subunit, with one bound at each half site of the specificity (S) subunit to form the MTase. The new m4C-producing Type I systems we describe have two separate yet highly similar MTase subunits that form a heterodimeric M1M2S MTase...
August 31, 2016: Nucleic Acids Research
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