A preliminary account of brain growth in postlarval Nereis virens (Polychaeta: Annelida): a [3H]thymidine study

1980 ◽  
Vol 58 (11) ◽  
pp. 2141-2149
Author(s):  
Jane Easdown ◽  
Joan Marsden ◽  
Khazal Paradis ◽  
Kathryn Bell ◽  
Judith Jost
Keyword(s):  
Cell Division ◽  
Brain Growth ◽  
Nereis Virens ◽  
Preliminary Account ◽  
Reduced Rate ◽  
The Brain

Labelling of the supraoesophageal ganglion of postlarval Nereis virens with [3H]thymidine indicates that cell division is most active in very small worms, less than 0.1 g in weight. In such animals a few, small, labelled neurons were found, but only after 13 h of exposure to isotope. After shorter exposures, very small, undifferentiated labelled cells were seen in most of the ganglionic areas of the brain, although the various ganglionic nuclei differ in the time of first appearance of their characteristic neurons. In older animals gliagenesis continues at a reduced rate and neuron production becomes extremely slow.

GABAA overactivation potentiates the effects of NMDA blockade during the brain growth spurt in eliciting locomotor hyperactivity in juvenile mice

2015 ◽  
Vol 50 ◽  
pp. 43-52 ◽  
Author(s):  
Juliana Oliveira-Pinto ◽  
Danielle Paes-Branco ◽  
Fabiana Cristina-Rodrigues ◽  
Thomas E. Krahe ◽  
Alex C. Manhães ◽  
...  
Keyword(s):  
Growth Spurt ◽  
Brain Growth ◽  
Locomotor Hyperactivity ◽  
Brain Growth Spurt ◽  
The Brain

scholarly journals Head circumference and anterior fontanel measurements in newborns

2012 ◽  
Vol 52 (3) ◽  
pp. 145 ◽  
Author(s):  
Rizal Agus Tiansyah ◽  
Irawan Mangunatmadja ◽  
Aman Pulungan
Keyword(s):  
Gestational Age ◽  
Head Circumference ◽  
Full Term ◽  
Brain Growth ◽  
Anterior Fontanel ◽  
Term Infants ◽  
Head Growth ◽  
Term Newborns ◽  
Male Subjects ◽  
The Brain

Background Head growth and anterior fontanel (AP) closureare passive processes in response to brain growth. The growthof the brain and skull starts in the third week of intrauterinegestation. roth processes run simultaneously as a part of integralgrowth, along 'With increasing gestational age, until post􀀿birth.Measurement of head circumference (He) and AF in newbornsis done to determine if the brain and skull grew normally duringthe intrauterine period.Objectives To investigate the differences in He and AF sizebetween preterm and full􀀿term infants, and the relationshipbetween gestational age (GA) and birth weight (BW) to Heand AF size.Methods This was a descriptive analytic study on preterm andfull􀀿term newborns. Measurement of HC and AF was conductedin three phases: just after birth, 1x24 and 2x24 hours of age.Analysis of HC and AF size differences between preterm and fullterm subjects was performed, as well as analysis of the correlationbetween GA and BW to HC and AF size.Results Two hundred fifty newborns completed the study. Therewere 180 full􀀿term and 70 preterm subjects. Median HC in full􀀿term and preterm male subjects were 34 cm (range 31􀀿37 cm)and 31 cm (27􀀿34 cm), respectively. Median HC in full􀀿termand preterm female subjects were 33 cm (31􀀿36 cm) and 32 cm(27􀀿3S.S cm), respectively. Median AF in full􀀿term and pretermmale subjects were 2.17 cm (1.0SA.6 cm) and 2.22 cm (1.3SA.Scm), respectively, and in full􀀿term and preterm female subjectswere 2.02 cm (lA.1S cm) and 2.22 cm (0.7SA cm), respectively.The HC of preterms were significantly lower than the fullterms(P<O.OOl), however the AF size was not different between these2 groups of newborns (P =0 .28). Correlation test between GA andBW to HC size revealed a positive correlation (r=0.620, P<O.OO 1and r=0.801, P<O.OOl, respectively), but not to AF size (r=􀀿 0.06,p􀁀 0.279 and F- 0.049, P􀁀0.44, respectively).Concl usions We found that the HC size of pre terms wassignificantly lower than thefullterms, but no significant differences in AF size between the two groups. GA and BW were associatedwith HC size, but not associated to AF size. [paediatr lndones.2012;52:145-51].

Functional and structural connectivity of the brain in very preterm babies: relationship with gestational age and body and brain growth

2019 ◽  
Vol 49 (8) ◽  
pp. 1078-1084 ◽  
Author(s):  
Vassiliki Mouka ◽  
Aikaterini Drougia ◽  
Vasileios G. Xydis ◽  
Loukas G. Astrakas ◽  
Anastasia K. Zikou ◽  
...  
Keyword(s):  
Gestational Age ◽  
Structural Connectivity ◽  
Brain Growth ◽  
Very Preterm ◽  
Preterm Babies ◽  
The Brain

scholarly journals Fascetto interacting protein ensures proper cytokinesis and ploidy

2019 ◽  
Vol 30 (8) ◽  
pp. 992-1007 ◽  
Author(s):  
Zachary T. Swider ◽  
Rachel K. Ng ◽  
Ramya Varadarajan ◽  
Carey J. Fagerstrom ◽  
Nasser M. Rusan
Keyword(s):  
Cell Division ◽  
Tissue Repair ◽  
Complete Separation ◽  
Contractile Ring ◽  
Interacting Protein ◽  
Simultaneous Reduction ◽  
Central Spindle ◽  
Daughter Cells ◽  
Molecular Machinery ◽  
The Brain

Cell division is critical for development, organ growth, and tissue repair. The later stages of cell division include the formation of the microtubule (MT)-rich central spindle in anaphase, which is required to properly define the cell equator, guide the assembly of the acto-myosin contractile ring and ultimately ensure complete separation and isolation of the two daughter cells via abscission. Much is known about the molecular machinery that forms the central spindle, including proteins needed to generate the antiparallel overlapping interzonal MTs. One critical protein that has garnered great attention is the protein regulator of cytokinesis 1, or Fascetto (Feo) in Drosophila, which forms a homodimer to cross-link interzonal MTs, ensuring proper central spindle formation and cytokinesis. Here, we report on a new direct protein interactor and regulator of Feo we named Feo interacting protein (FIP). Loss of FIP results in a reduction in Feo localization, rapid disassembly of interzonal MTs, and several defects related to cytokinesis failure, including polyploidization of neural stem cells. Simultaneous reduction in Feo and FIP results in very large, tumorlike DNA-filled masses in the brain that contain hundreds of centrosomes. In aggregate, our data show that FIP acts directly on Feo to ensure fully accurate cell division.

scholarly journals The effects of exercise on adolescent hippocampal neurogenesis in a rat model of binge alcohol exposure during the brain growth spurt

2009 ◽  
Vol 1294 ◽  
pp. 1-11 ◽  
Author(s):  
Jennifer L. Helfer ◽  
Charles R. Goodlett ◽  
William T. Greenough ◽  
Anna Y. Klintsova
Keyword(s):  
Rat Model ◽  
Alcohol Exposure ◽  
Hippocampal Neurogenesis ◽  
Growth Spurt ◽  
Brain Growth ◽  
Brain Growth Spurt ◽  
The Brain

Alcohol Exposure During the Brain Growth Spurt Promotes Hippocampal Seizures, Rapid Kindling, and Spreading Depression

2001 ◽  
Vol 25 (5) ◽  
pp. 734-745 ◽  
Author(s):  
Daniel J. Bonthius ◽  
Nicholas J. Pantazis ◽  
Bahri Karacay ◽  
Nancy E. Bonthius ◽  
Derek A. Taggard ◽  
...  
Keyword(s):  
Spreading Depression ◽  
Alcohol Exposure ◽  
Growth Spurt ◽  
Brain Growth ◽  
Brain Growth Spurt ◽  
Hippocampal Seizures ◽  
The Brain
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