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Search Results: 1 - 10 of 642 matches for " interpasitus nucleus "
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Influences of cerebellar interpositus nucleus and fastigial nucleus on neuronal activity of lateral hypothalamic area
Jianjun Wang,Yongmei Pu,Tao Wang
Science China Life Sciences , 1997, DOI: 10.1007/BF02882046
Abstract: Stimulation of cerebellar interpositus nucleus and fastigial nucleus could influence the neuronal activity of lateral hypothalamic area in the cat, and some of the neurons which respond to the cerebellar stimulations are glucose-sensitive neurons. These results suggest that the cerebellum is involved not only in motor control, but also in the regulation of non-somatic functions through the cerebello-hypothalamic pathways.
A Study of Multifractal Spectra and Renyi Dimensions in 14.5A GeV/c 28Si-Nucleus Collisions  [PDF]
N. Ahmad, A. Kamal, M. M. Khan,   Hushnud, A. Tufail
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.514129
Abstract:

A systematic analysis of the data on 14.5A GeV/c 28Si-nucleus collisions is carried out to investigate the behaviours of Renyi dimensions, Dq and Multifractal Spectral Function, f(αq). The Renyi dimensions, Dq are observed to decrease with increasing order of the moments, q. However, the Multifractal Spectra are concave downwards with their maxima occurring around αq =1.21±0.01. A continuous curve representing Multifractal Spectral Function, f(αq), characterizes manifestation of fluctuations in the rapidity space.

Central Nervous System Control of Glucose Homeostasis  [PDF]
Poondy Gopalratnam Raman
Open Journal of Endocrine and Metabolic Diseases (OJEMD) , 2017, DOI: 10.4236/ojemd.2017.712020
Abstract: Hypothalamus and brain stem play important roles in Glucose Homeostasis. There are two types of cells in the hypothalamus: Glucose excited (GE) and Glucose inhibited (GI). GE increases glucose concentration and GI decreases glucose concentration. They are located in ventromedial (VMH), arcuate, lateral, dorsomedial and paraventricular areas of hypothalamus. Nucleus of solitary tract, area postrema, dorsomedial nucleus of vagus and basolateral medulla are also related to glucose homeostasis. VMH contains sympathetic nucleus and upregulates plasma glucose and decreases hepatic glycogen, while lateral hypothalamus contains parasympathetic and down regulates plasma glucose. Through Glut-1, dependent transport glucose enters neurons and astrocytes. Glucose is metabolized and provides energy for GE and GI neurons. Their activity is guided by blood sugar level. Blood sugar level sends numerous signals through vagal pathway from periphery. Neuron astrocyte establishes via autonomic system connections with liver, pancreas, adrenal gland and maintains glucose homeostasis. Post prandial glucose levels are regulated by CNS.
Localization of BRUNOL2 in Rat Spermatogenic Cells as Revealed by Immunofluorescence and Immunoelectron Microscopic Techniques  [PDF]
Hiroka Yonetamari, Yuko Onohara, Sadaki Yokota
Open Journal of Cell Biology (OJCB) , 2012, DOI: 10.4236/ojcb.2012.22002
Abstract: Distribution and localization of a RNA-binding protein, BRUNOL2 in rat spermatogenic cells were studied by dot blotting of cell fractions, immunofluorescence (IF), and immunoelectron microscopy (IEM). BRUNOL2 distributed in nuclear (23%), mitochondrial (19%), microsomal (15%), and cytosol fractions (43%). BRUNOL2 was detected in all spermatogenic cells. In the cytoplasm and nucleoplasm of the spermatogonia, spermatocytes and spermatids, both diffuse and granular staining patterns were observed. Many cytoplasmic granules were stained also for DDX4 and DDX25. Large granules in the cytoplasm of elongated spermatids were stained for BRUNOL2 but not for the nuage proteins. IEM showed that gold signals for BRUNOL2 were concentrated in nuage components including loose aggregates of small particles, chromatoid body (CB), intermitochondrial cement (IMC), and satellite body (SB). In addition, many non-nuage structures such as ER-attached small granules, less dense material surrounding connecting piece of flagellum, reticulated body, mitochondria-associated granules (MAG), granulated body, ribosome aggregate, and manchette, were stained for BRUNOL2 with different staining intensities. In the nucleus, gold signals were concentrated in heterochromatin area and nucleolus. The results suggest that BRUNOL2 is one of the nuage proteins and also associated with the other non-nuage structures, suggesting multiple functions of this protein.
Changes in the Nuclei of Infected Cells at Early Stages of Infection with EMCV  [PDF]
Zaven A. Karalyan, Hranush R. Avagyan, Hovakim S. Zakaryan, Liana O. Abroyan, Lina H. Hakobyan, Aida S. Avetisyan, Elena M. Karalova
CellBio (CellBio) , 2013, DOI: 10.4236/cellbio.2013.23014
Abstract:

By the methods of quantitative cytophotometry, we have identified the changes in the nucleus and of some intranuclear compartments in the early stages of infection with encephalomyocarditis virus (EMCV). They can be characterized as early 1 - 2 hours post infection (hpi) and temporary increase (duration about 1 hour) in the content of the acidic proteins of the nucleolus, changing their decline to the control values. Then (after 1 - 2 hours) follows an increase in RNA content of nucleoli to 4 hours post infection (the process takes about 2 hours). The increase in RNA content in nucleoli is in approximately the same time (slightly behind) with the activation of PML bodies (2 - 4 hpi). Then, the RNA content in nucleoli decreased to the control values, while simultaneously decreasing activity of PML bodies (ranging from 5 - 6 hpi). The early stages of infection EMCV are also characterized by the tendency to increase in the size of the nuclei of infected cells, and preserve at a later time. Then there is an increase in RNA content in the nucleus, roughly coinciding with the increased content of RNA in the nucleoli.

Localization of BRUNOL2 in Rat Spermatogenic Cells as Revealed by Immunofluorescence and Immunoelectron Microscopic Techniques  [PDF]
Hiroka Yonetamari, Yuko Onohara, Sadaki Yokota
CellBio (CellBio) , 2012, DOI: 10.4236/ojcb.2012.22002
Abstract:

Distribution and localization of a RNA-binding protein, BRUNOL2 in rat spermatogenic cells were studied by dot blotting of cell fractions, immunofluorescence (IF), and immunoelectron microscopy (IEM). BRUNOL2 distributed in nuclear (23%), mitochondrial (19%), microsomal (15%), and cytosol fractions (43%). BRUNOL2 was detected in all spermatogenic cells. In the cytoplasm and nucleoplasm of the spermatogonia, spermatocytes and spermatids, both diffuse and granular staining patterns were observed. Many cytoplasmic granules were stained also for DDX4 and DDX25. Large granules in the cytoplasm of elongated spermatids were stained for BRUNOL2 but not for the nuage proteins. IEM showed that gold signals for BRUNOL2 were concentrated in nuage components including loose aggregates of small particles, chromatoid body (CB), intermitochondrial cement (IMC), and satellite body (SB). In addition, many non-nuage structures such as ER-attached small granules, less dense material surrounding connecting piece of flagellum, reticulated body, mitochondria-associated granules (MAG), granulated body, ribosome aggregate, and manchette, were stained for BRUNOL2 with different staining intensities. In the nucleus, gold signals were concentrated in heterochromatin area and nucleolus. The results suggest that BRUNOL2 is one of the nuage proteins and also associated with the other non-nuage structures, suggesting multiple functions of this protein.

Further studies on the effects of acamprosate on tolerance to the analgesic effects of morphine and NO synthesis in the brain  [PDF]
Jacqueline Sepúlveda, Andrea Ortega, Jorge Roa, Enrique Contreras
Health (Health) , 2013, DOI: 10.4236/health.2013.511A1001
Abstract: The aim of this work was to investigate whether acamprosate modifies the expression of the enzyme responsible for neuronal NO synthesis (nNOS) in the nucleus accumbens (NAc) of mice chronically treated with morphine and during the abstinence syndrome induced by naloxone. The enzyme was monitored by the NADPH diaphorase method. The number of cells stained for NADPH diaphorase in the NAc of mice was counted in 40 μm thick coronal brain slices at 40X. The intensity of the histochemical reaction of stained cells from naive morphine plus saline and morphine plus acamprosate treated mice was analyzed by Image Pro Plus 4.5.1. Morphine administered in a slow release preparation increased the stain intensity of the positive neurons. The increase in the NADPH staining persisted after naloxone was given to mice chronically treated with morphine. Acamprosate antagonized the effects induced by chronic morphine treatment in the NAc of mice. These results indicate that up-regulation of nNOS in the NAc is a consequence of the sustained effects of morphine stimulation, which, in turn, may result from an increased in glutamate release during the abstinence syndrome.
Some Important Features of Relativistic Charged Particles Produced in 32S-Emulsion Interactions at 200 AGeV/c  [PDF]
Mir Hashim Rasool, Mohammad Ayaz Ahmad, Om Veer Singh, Shafiq Ahmad
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.611154
Abstract: An attempt has been made to study the multiplicity, angular and pseudo rapidity distributions of relativistic charged particles emerging from the interactions between sulphur and nuclear emulsion nuclei at 200 GeV/nucleon. The distributions from 200 AGeV are compared to the corresponding distributions from the predictions of Monte Carlo code FRITIOF samples. The pseudo rapidity distributions in different Nh-intervals translate to the target fragmentation region with increasing target mass. Finally, the scaling of multiplicity distributions of shower particles successfully describes the consequences of KNO scaling.
Neuron Types Of Cochlear Nucleus
Levent Tumkaya,Adnan Korkmaz
Arsiv Kaynak Tarama Dergisi , 2010,
Abstract: The cochlear nuclei, located at the border between the medulla oblongata and pons around the point of entrance of acoustic nerve root, are the first neuronal centres to receive synaptic terminals from the acoustic nerve. The cochlear nucleus is the first relay station of the ascending auditory pathway that receives all efferent output coming from the cochlea. The cochlear nucleus is divided into a ventral part and a dorsal part, consisting of morphologically and physiology distinct types of neurons. Because the cochlear nucleus is related to hearing, it is also associated with language development and learning, therefore many morphological and physiological studies have been done in this nucleus. [Archives Medical Review Journal 2010; 19(2.000): 57-71]
Effects of Naphthalene on DNA and RNA quantity in Amoeba proteus by using confocal laser scanning microscope
Khwanmuni, J.,Tansakul, R.
Songklanakarin Journal of Science and Technology , 2006,
Abstract: Effects of Naphthalene which is a carcinogen on changes of DNA and RNA quantities were studied with acridine orange stained cells under a confocal laser scanning microscope. It was found that DNA and RNA in amoebae nucleus and cytoplasm, reared in 0 (control), 3 and 8.85 mg/l (24h-LD50) at 0 and 12 h. showed a statistically significant difference (p<0.05). The more naphthalene concentrations and larger incubation periods had greater effects on DNA and RNA decreases in amoebae nucleus and cytoplasm.
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