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https://www.readbyqxmd.com/read/28396290/neuroanatomical-demonstration-of-calbindin-2a-and-calbindin-2b-like-calcium-binding-proteins-in-the-early-embryonic-development-of-zebrafish-mrna-study
#1
Rahul C Bhoyar, Arun G Jadhao, Sridhar Sivasubbu, A R Singh, Ankit Sabharwal, Nikhil V Palande, Saikat Biswas
Certain calcium binding proteins (CaBPs) are essential for metabolic processes but the role of these proteins in the development is not well known. We have investigated the mRNA expression of CaBPs, calbindin 2a (Calb2a) and calbindin 2b (Calb2b) in the zebrafish embryos 24, 36, 48 and 72h post fertilization (hpf). We have seen very high Calb2a mRNA expression in the tegmentum (Tg), midbrain-hindbrain boundary (Mhb), hindbrain (Hb), spinal cord (Sc), retina and cranial ganglion (Crg). Also very high Calb2b mRNA expression was noted in olfactory cells, cerebellum, Tg, Mhb, Hb, optic tectum, retina, retinal ganglion cell layer, retinal inner nuclear layer, Sc, Neural crest, infraorbital neuromasts, pharyngeal arch 3-7 skeleton and mandibular neuromasts...
April 8, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28387937/specific-connections-of-the-interpeduncular-subnuclei-reveal-distinct-components-of-the-habenulopeduncular-pathway
#2
Lely A Quina, Julie Harris, Hongkui Zeng, Eric E Turner
The habenulopeduncular pathway consists of the medial habenula (MHb), its output tract, the fasciculus retroflexus, and its principal target, the interpeduncular nucleus (IP). Several IP subnuclei have been described, but their specific projections and relationship to habenula inputs are not well understood. Here we have used viral, transgenic, and conventional anterograde and retrograde tract-tracing methods to better define the relationship between the dorsal and ventral MHb, the IP, and the secondary efferent targets of this system...
April 7, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28368384/glp-1-acts-on-habenular-avoidance-circuits-to-control-nicotine-intake
#3
Luis M Tuesta, Zuxin Chen, Alexander Duncan, Christie D Fowler, Masago Ishikawa, Brian R Lee, Xin-An Liu, Qun Lu, Michael Cameron, Matthew R Hayes, Theodore M Kamenecka, Matthew Pletcher, Paul J Kenny
Tobacco smokers titrate their nicotine intake to avoid its noxious effects, sensitivity to which may influence vulnerability to tobacco dependence, yet mechanisms of nicotine avoidance are poorly understood. Here we show that nicotine activates glucagon-like peptide-1 (GLP-1) neurons in the nucleus tractus solitarius (NTS). The antidiabetic drugs sitagliptin and exenatide, which inhibit GLP-1 breakdown and stimulate GLP-1 receptors, respectively, decreased nicotine intake in mice. Chemogenetic activation of GLP-1 neurons in NTS similarly decreased nicotine intake...
May 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28340505/afferent-and-efferent-connections-of-the-interpeduncular-nucleus-with-special-reference-to-circuits-involving-the-habenula-and-raphe-nuclei
#4
Leandro B Lima, Debora Bueno, Fernanda Leite, Stefani Souza, Luciano Gonçalves, Isadora C Furigo, Jose Donato, Martin Metzger
The habenula is an epithalamic structure differentiated into two nuclear complexes, medial (MHb) and lateral habenula (LHb). Recently, MHb together with its primary target, the interpeduncular nucleus (IP), have been identified as major players in mediating the aversive effects of nicotine. However, structures downstream of the MHb-IP axis, including the median (MnR) and caudal dorsal raphe nucleus (DRC), may contribute to the behavioral effects of nicotine. The afferent and efferent connections of the IP have hitherto not been systematically investigated with sensitive tracers...
March 24, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28193648/pharmacodynamics-of-finafloxacin-ciprofloxacin-and-levofloxacin-in-serum-and-urine-against-tem-and-shv-type-extended-spectrum-%C3%AE-lactamase-producing-enterobacteriaceae-isolates-from-patients-with-urinary-tract-infections
#5
A Dalhoff, S Schubert, A Vente
The pharmacodynamics of finafloxacin, ciprofloxacin, and levofloxacin against extended-spectrum-β-lactamase (ESBL)-producing Enterobacteriaceae isolates were compared. Since quinolones lose activity in acidic media, and particularly in urine, their activities were tested in parallel under conventional conditions and in acidic artificial urine. For this purpose, TEM- and SHV-type ESBL-producing Escherichia coli and Klebsiella pneumoniae strains and their wild-type counterparts were exposed in a modified Grasso model to simulated concentrations of drugs in serum and urine following oral doses of either finafloxacin at 800 mg once a day (q...
May 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28148652/calcium-signals-drive-cell-shape-changes-during-zebrafish-midbrain-hindbrain-boundary-formation
#6
Srishti U Sahu, Mike R Visetsouk, Ryan J Garde, Leah Hennes, Constance Kwas, Jennifer H Gutzman
One of the first morphogenetic events in the vertebrate brain is the formation of the highly conserved midbrain-hindbrain boundary (MHB). Specific cell shape changes occur at the point of deepest constriction of the MHB, the midbrain-hindbrain boundary constriction (MHBC), and are critical for proper MHB formation. These cell shape changes are controlled by nonmuscle myosin II (NMII) motor proteins, which are tightly regulated via the phosphorylation of their associated myosin regulatory light chains (MRLCs)...
April 1, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28092164/comparing-modified-huddart-bodenham-scoring-system-and-goslon-yardstick-to-assess-dental-arch-relationships-in-unilateral-cleft-lip-and-palate-patients
#7
Muhaini Yakob, H Yang Rafidah, M Gu, Y Yang
OBJECTIVE:   To test the reliability of the modified Huddart-Bodenham (MHB) numerical scoring system and its agreement with the GOSLON Yardstick categorization for assessing the dental arch relationships in unilateral cleft lip and palate (UCLP) cases. DESIGN:   A retrospective study. SETTING:   Faculty of Dentistry, The University of Hong Kong. PATIENTS:   Forty-one nonsyndromic UCLP consecutive patients attending the Joint Cleft Lip/Palate Clinic at Faculty of Dentistry in the University of Hong Kong were selected...
January 16, 2017: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/28039166/an-ensemble-approach-to-protein-fold-classification-by-integration-of-template-based-assignment-and-support-vector-machine-classifier
#8
Jiaqi Xia, Zhenling Peng, Dawei Qi, Hongbo Mu, Jianyi Yang
Motivation: Protein fold classification is a critical step in protein structure prediction. There are two possible ways to classify protein folds. One is through template-based fold assignment and the other is ab-initio prediction using machine learning algorithms. Combination of both solutions to improve the prediction accuracy was never explored before. Results: We developed two algorithms, HH-fold and SVM-fold for protein fold classification. HH-fold is a template-based fold assignment algorithm using the HHsearch program...
March 15, 2017: Bioinformatics
https://www.readbyqxmd.com/read/27943295/pharmacokinetic-and-pharmacodynamic-characterization-of-ceftiofur-crystalline-free-acid-following-subcutaneous-administration-in-domestic-goats
#9
G S Waraich, P K Sidhu, P S Daundkar, G Kaur, S K Sharma
Pharmacokinetic (PK)-pharmacodynamic (PD) integration of crystalline ceftiofur-free acid (CCFA) was established in six healthy female goats administered subcutaneously (s.c.) on the left side of the neck at a dosage of 6.6 mg/kg body weight. Serum concentrations of ceftiofur and desfuroylceftiofur (DFC) were determined using high-performance liquid chromatography. Mutant prevention concentration (MPC), minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of ceftiofur were determined for Pasteurella (P...
December 12, 2016: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27940019/the-habenula-as-a-critical-node-in-chronic-stress-related-anxiety
#10
Luis R Jacinto, Rui Mata, Ashley Novais, Fernanda Marques, Nuno Sousa
The habenula is activated in response to stressful and aversive events, resulting in exploratory inhibition. Although possible mechanisms for habenula activation have been proposed, the effects of chronic stress on the habenular structure have never been studied. Herein, we assessed changes in volume, cell density and dendritic structure of habenular cells after chronic stress exposure using stereological and 3D morphological analysis. This study shows for the first time that there is a hemispherical asymmetry in the medial habenula (MHb) of the adult rat, with the right MHb containing more neurons than its left counterpart...
March 2017: Experimental Neurology
https://www.readbyqxmd.com/read/27938710/comparison-of-standardised-versus-non-standardised-methods-for-testing-the-in-vitro-potency-of-oxytetracycline-against-mannheimia-haemolytica-and-pasteurella-multocida
#11
P Lees, J Illambas, L Pelligand, P-L Toutain
The in vitro pharmacodynamics of oxytetracycline was established for six isolates of each of the calf pneumonia pathogens Mannheimia haemolytica and Pasteurella multocida. Minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and bacterial time-kill curves were determined in two matrices, Mueller Hinton broth (MHB) and calf serum. Geometric mean MIC ratios, serum:MHB, were 25.2:1 (M. haemolytica) and 27.4:1 (P. multocida). The degree of binding of oxytetracycline to serum protein was 52...
December 2016: Veterinary Journal
https://www.readbyqxmd.com/read/27901206/antimicrobial-activity-of-different-disinfectants-against-cariogenic-microorganisms
#12
Esra Uzer Celik, Ayse Tugce Tunac, Mustafa Ates, Bilge Hakan Sen
The aim of this study was to assess the in vitro antimicrobial effects of chlorhexidine digluconate (CHX), polyhexamethylene biguanide (PHBM), and octenidine dihydrochloride (OCT) on cariogenic microorganisms by using their minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). CHX, PHBM, and OCT were diluted in distilled water to the final test concentrations. Using the in-tube dilution method, Streptococcus mutans, Lactobacillus acidophilus, Lactobacillus rhamnosus, and Actinomyces viscosus were cultivated on blood agar and Mueller-Hinton broth (MHB) at 37°C for 48 h...
November 28, 2016: Brazilian Oral Research
https://www.readbyqxmd.com/read/27891615/a-large-potentiation-effect-of-serum-on-the-in%C3%A2-vitro-potency-of-tulathromycin-against-mannheimia-haemolytica-and-pasteurella-multocida
#13
P Lees, J Illambas, T J Potter, L Pelligand, A Rycroft, P-L Toutain
The antimicrobial properties of tulathromycin were investigated for M. haemolytica and P. multocida. Three in vitro indices of antimicrobial activity, minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and time-kill curves, were established for six isolates of each organism. Each index was measured in two growth media: Mueller-Hinton broth (MHB) and calf serum. It was shown that MICs and MBCs were markedly lower in serum than in MHB. MHB:serum ratios for MIC were 47:1 (M. haemolytica) and 53:1 (P...
November 27, 2016: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27890353/anxiety-and-nicotine-dependence-emerging-role-of-the-habenulo-interpeduncular-axis
#14
REVIEW
Susanna Molas, Steven R DeGroot, Rubing Zhao-Shea, Andrew R Tapper
While innovative modern neuroscience approaches have aided in discerning brain circuitry underlying negative emotional behaviors including fear and anxiety responses, how these circuits are recruited in normal and pathological conditions remains poorly understood. Recently, genetic tools that selectively manipulate single neuronal populations have uncovered an understudied circuit, the medial habenula (mHb)-interpeduncular (IPN) axis, that modulates basal negative emotional responses. Interestingly, the mHb-IPN pathway also represents an essential circuit that signals heightened anxiety induced by nicotine withdrawal...
February 2017: Trends in Pharmacological Sciences
https://www.readbyqxmd.com/read/27814710/methemoglobin-and-nitric-oxide-therapy-in-ugandan-children-hospitalized-for-febrile-illness-results-from-a-prospective-cohort-study-and-randomized-double-blind-placebo-controlled-trial
#15
Andrea L Conroy, Michael Hawkes, Kyla Hayford, Laura Hermann, Chloe R McDonald, Suparna Sharma, Sophie Namasopo, Robert O Opoka, Chandy C John, W Conrad Liles, Christopher Miller, Kevin C Kain
BACKGROUND: Exposure of red blood cells to oxidants increases production of methemoglobin (MHb) resulting in impaired oxygen delivery to tissues. There are no reliable estimates of methemoglobinemia in low resource clinical settings. Our objectives were to: i) evaluate risk factors for methemoglobinemia in Ugandan children hospitalized with fever (study 1); and ii) investigate MHb responses in critically ill Ugandan children with severe malaria treated with inhaled nitric oxide (iNO), an oxidant that induces MHb in a dose-dependent manner (study 2)...
November 4, 2016: BMC Pediatrics
https://www.readbyqxmd.com/read/27793697/development-and-experience-dependent-plasticity-in-the-dorsomedial-habenula
#16
Peter Koppensteiner, Christopher Galvin, Ipe Ninan
Of the two major subdivisions of the habenula, the medial and lateral nuclei, the medial habenula is the least understood in terms of synaptic transmission, intrinsic properties and plasticity. The medial habenula (MHb) is composed of glutamatergic neurons which receive the majority of their inputs from the septal region and project predominantly to the interpeduncular nucleus (IPN). To understand the synaptic transmission, we studied both glutamatergic and GABAergic synaptic transmission in the dorsal region of the medial habenula (dMHb)...
December 2016: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/27775222/monitoring-macular-pigment-changes-in-macular-holes-using-fluorescence-lifetime-imaging-ophthalmoscopy
#17
Lydia Sauer, Sven Peters, Johanna Schmidt, Dietrich Schweitzer, Matthias Klemm, Lisa Ramm, Regine Augsten, Martin Hammer
PURPOSE: To investigate the impact of macular pigment (MP) on fundus autofluorescence (FAF) lifetimes in vivo by characterizing full-thickness idiopathic macular holes (MH) and macular pseudo-holes (MPH). METHODS: A total of 37 patients with MH and 52 with MPH were included. Using the fluorescence lifetime imaging ophthalmoscope (FLIO), based on a Heidelberg Engineering Spectralis system, a 30° retinal field was investigated. FAF decays were detected in a short (498-560 nm; ch1) and long (560-720 nm; ch2) wavelength channel...
October 24, 2016: Acta Ophthalmologica
https://www.readbyqxmd.com/read/27768819/habitat-and-taxon-as-driving-forces-of-carbohydrate-catabolism-in-marine-heterotrophic-bacteria-example-of-the-model-algae-associated-bacterium-zobellia-galactanivorans-dsij-t
#18
Tristan Barbeyron, François Thomas, Valérie Barbe, Hanno Teeling, Chantal Schenowitz, Carole Dossat, Alexander Goesmann, Catherine Leblanc, Frank Oliver Glöckner, Mirjam Czjzek, Rudolf Amann, Gurvan Michel
The marine flavobacterium Zobellia galactanivorans Dsij(T) was isolated from a red alga and by now constitutes a model for studying algal polysaccharide bioconversions. We present an in-depth analysis of its complete genome and link it to physiological traits. Z. galactanivorans exhibited the highest gene numbers for glycoside hydrolases, polysaccharide lyases and carbohydrate esterases and the second highest sulfatase gene number in a comparison to 125 other marine heterotrophic bacteria (MHB) genomes. Its genome contains 50 polysaccharide utilization loci, 22 of which contain sulfatase genes...
December 2016: Environmental Microbiology
https://www.readbyqxmd.com/read/27725766/functional-visualization-and-disruption-of-targeted-genes-using-crispr-cas9-mediated-egfp-reporter-integration-in-zebrafish
#19
Satoshi Ota, Kiyohito Taimatsu, Kanoko Yanagi, Tomohiro Namiki, Rie Ohga, Shin-Ichi Higashijima, Atsuo Kawahara
The CRISPR/Cas9 complex, which is composed of a guide RNA (gRNA) and the Cas9 nuclease, is useful for carrying out genome modifications in various organisms. Recently, the CRISPR/Cas9-mediated locus-specific integration of a reporter, which contains the Mbait sequence targeted using Mbait-gRNA, the hsp70 promoter and the eGFP gene, has allowed the visualization of the target gene expression. However, it has not been ascertained whether the reporter integrations at both targeted alleles cause loss-of-function phenotypes in zebrafish...
October 11, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27721656/role-of-mirna-9-in-brain-development
#20
REVIEW
Balachandar Radhakrishnan, A Alwin Prem Anand
MicroRNAs (miRNAs) are a class of small regulatory RNAs involved in gene regulation. The regulation is effected by either translational inhibition or transcriptional silencing. In vertebrates, the importance of miRNA in development was discovered from mice and zebrafish dicer knockouts. The miRNA-9 (miR-9) is one of the most highly expressed miRNAs in the early and adult vertebrate brain. It has diverse functions within the developing vertebrate brain. In this article, the role of miR-9 in the developing forebrain (telencephalon and diencephalon), midbrain, hindbrain, and spinal cord of vertebrate species is highlighted...
2016: Journal of Experimental Neuroscience
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