HYPOTHALAMIC PARAVENTRICULAR NUCLEUS PLAYS A ROLE IN ACUPUNCTURE ANALGESIA THROUGH THE CENTRAL NERVOUS SYSTEM IN THE RAT

1992 ◽  
Vol 17 (4) ◽  
pp. 209-220 ◽  
Author(s):  
Yang Jun ◽  
Bao-Cheng Lin
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Paraventricular Nucleus ◽  
Hypothalamic Paraventricular Nucleus ◽  
Acupuncture Analgesia ◽  
The Central Nervous System

The neurosteroid allopregnanolone modulates oxytocin expression in the hypothalamic paraventricular nucleus

2000 ◽  
Vol 278 (3) ◽  
pp. R684-R691 ◽  
Author(s):  
Brian J. Blyth ◽  
Richard L. Hauger ◽  
Robert H. Purdy ◽  
Janet A. Amico
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Paraventricular Nucleus ◽  
Hypothalamic Paraventricular Nucleus ◽  
Ovariectomized Rats ◽  
Allosteric Modulator ◽  
Mrna Levels ◽  
Positive Allosteric Modulator ◽  
System P ◽  
The Central Nervous System

Virgin, ovariectomized rats exposed to 2 wk of sequential estradiol (E2) and progesterone (P) followed by P withdrawal have increased hypothalamic oxytocin (OT) mRNA and peptide levels relative to sham-treated animals. This increase is prevented if P is sustained. In the central nervous system, P is metabolized to the neurosteroid allopregnanolone (3α-hydroxy-5α-pregnan-20-one), which exerts effects by acting as a positive allosteric modulator of GABAA receptor/Cl−-channel complexes. In the present study, ovariectomized rats that received sequential E2 and P for 2 wk followed by P withdrawal were administered allopregnanolone at the time of P withdrawal. Hypothalamic and plasma allopregnanolone concentrations, serum E2 and P concentrations, and hypothalamic OT mRNA levels were measured at death. Steroid-induced increases in OT mRNA were attenuated in animals treated with allopregnanolone at the time of P withdrawal. The results suggest that allopregnanolone plays an important modulatory role in steroid-mediated increases in hypothalamic OT.

scholarly journals EFEK APOMORFIN SUBLINGUAL PADA EREKSI PENIS

2013 ◽  
Vol 4 (3) ◽  
Author(s):  
Kaleb D.S. Salossa ◽  
Sonny J.R. Kalangi ◽  
Ghazaly Adam
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Erectile Dysfunction ◽  
Cardiovascular Diseases ◽  
Paraventricular Nucleus ◽  
Penile Erection ◽  
Sexual Stimulation ◽  
Psychosocial Therapy ◽  
Penile Erections ◽  
The Central Nervous System

Abstract: Erectile dysfunction is the disability of a male to maintain consistant or repeated penile erections sufficiently for successful sexual intercourse. Many efforts have been done to handle this condition, so far. The psychosocial therapy and several medications inter alia: testosterone, yohimbine, trazadone, direct intracavernosus injection of alprostadil, penile implantation, and  sildenafil citrate, are not always suitable for the patients’ needs, especiallly those who suffer from cardiovascular diseases. Therefore, a new erectogenic agent has been introduced, the sublingual apomorphine. This apomorphine has a dopamine-like molecule that acts on the dopamine receptors in the paraventricular nucleus (PVN) of the central nervous system to increase the penile erection due to sexual stimulation (erotic imagination, audiovisual, or tactile). The sublingual apomorphine has been proved effective in overcoming the erectile dysfunction, especially the mild and moderate forms. Keywords: penile erection, sublingual apomorphin.     Abstrak: Telah banyak upaya dilakukan untuk mengatasi disfungsi ereksi yang merupakan ketidakmampuan seorang laki-laki secara konsisten atau berulang untuk mencapai dan mempertahankan ereksi penis yang cukup untuk melakukan hubungan seksual. Terapi psikososial dan pengobatan yang pernah diajukan seperti pemberian hormon testosteron, yohimbin, trazadon, injeksi langsung alprostadil intrakavernosa, implantasi penis serta sildenafil sitrat tidaklah selalu sesuai dengan kebutuhan penderita, khususnya penderita disfungsi ereksi dengan penyakit kardiovaskuler. Para ahli berusaha melakukan terobosan baru salah satunya adalah apomorfin sublingual yang merupakan agen erektogenik baru. Apomorfin adalah suatu molekul mirip dopamin yang bekerja pada reseptor dopamin pada paraventricular nucleus (PVN) di sistem saraf pusat untuk meningkatkan rangsangan erektil saat stimulasi seksual (imaginasi erotik, audiovisual dan perabaan) terjadi. Apomorfin sublingual terbukti efektif untuk mengatasi disfungsi ereksi, terutama disfungsi ereksi ringan dan sedang. Kata kunci: ereksi penis, apomorfin sublingual.

Sympathoexcitatory input from hypothalamic paraventricular nucleus neurons projecting to rostral ventrolateral medulla is enhanced after myocardial infarction

2020 ◽  
Vol 319 (6) ◽  
pp. H1197-H1207
Author(s):  
Satoshi Koba ◽  
Eri Hanai ◽  
Nao Kumada ◽  
Tatsuo Watanabe
Keyword(s):  
Myocardial Infarction ◽  
Heart Failure ◽  
Central Nervous System ◽  
Nervous System ◽  
Paraventricular Nucleus ◽  
Rostral Ventrolateral Medulla ◽  
Hypothalamic Paraventricular Nucleus ◽  
Ventrolateral Medulla

Using optogenetics in rats, we report that sympathoexcitatory input from hypothalamic paraventricular nucleus neurons that project to the rostral ventrolateral medulla is enhanced after myocardial infarction. It is suggested that this monosynaptic pathway makes up a key part of central nervous system circuitry underlying sympathetic hyperactivation commonly seen in heart failure.

Effects of Hyperoxia on Lung Utrastructure

1970 ◽  
Vol 28 ◽  
pp. 26-27
Author(s):  
Gladys Harrison
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Light Microscopy ◽  
Oxygen Effects ◽  
Age Dependent ◽  
The Central Nervous System ◽  
The Subject ◽  
Space Age ◽  
Alveolar Septa ◽  
Extensive Damage

With the advent of the space age and the need to determine the requirements for a space cabin atmosphere, oxygen effects came into increased importance, even though these effects have been the subject of continuous research for many years. In fact, Priestly initiated oxygen research when in 1775 he published his results of isolating oxygen and described the effects of breathing it on himself and two mice, the only creatures to have had the “privilege” of breathing this “pure air”.Early studies had demonstrated the central nervous system effects at pressures above one atmosphere. Light microscopy revealed extensive damage to the lungs at one atmosphere. These changes which included perivascular and peribronchial edema, focal hemorrhage, rupture of the alveolar septa, and widespread edema, resulted in death of the animal in less than one week. The severity of the symptoms differed between species and was age dependent, with young animals being more resistant.

Emigration of neutrophils in the central nervous system

1983 ◽  
Vol 41 ◽  
pp. 788-789
Author(s):  
John L.Beggs ◽  
John D. Waggener ◽  
Wanda Miller ◽  
Jane Watkins
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Osmium Tetroxide ◽  
White Blood Cells ◽  
Arterial Perfusion ◽  
E Coli ◽  
Intracisternal Injection ◽  
The Central Nervous System ◽  
Brain And Spinal Cord ◽  
Interendothelial Junctions

Studies using mesenteric and ear chamber preparations have shown that interendothelial junctions provide the route for neutrophil emigration during inflammation. The term emigration refers to the passage of white blood cells across the endothelium from the vascular lumen. Although the precise pathway of transendo- thelial emigration in the central nervous system (CNS) has not been resolved, the presence of different physiological and morphological (tight junctions) properties of CNS endothelium may dictate alternate emigration pathways.To study neutrophil emigration in the CNS, we induced meningitis in guinea pigs by intracisternal injection of E. coli bacteria.In this model, leptomeningeal inflammation is well developed by 3 hr. After 3 1/2 hr, animals were sacrificed by arterial perfusion with 3% phosphate buffered glutaraldehyde. Tissues from brain and spinal cord were post-fixed in 1% osmium tetroxide, dehydrated in alcohols and propylene oxide, and embedded in Epon. Thin serial sections were cut with diamond knives and examined in a Philips 300 electron microscope.

Mammalian Bone Marrow Acetylcholinesterase

1982 ◽  
Vol 40 ◽  
pp. 44-45
Author(s):  
Ezzatollah Keyhani
Keyword(s):  
Central Nervous System ◽  
Bone Marrow ◽  
Nervous System ◽  
Common Property ◽  
Extracellular Medium ◽  
The Central Nervous System ◽  
The Common ◽  
Mammalian Bone

Acetylcholinesterase (EC 3.1.1.7) (ACHE) has been localized at cholinergic junctions both in the central nervous system and at the periphery and it functions in neurotransmission. ACHE was also found in other tissues without involvement in neurotransmission, but exhibiting the common property of transporting water and ions. This communication describes intracellular ACHE in mammalian bone marrow and its secretion into the extracellular medium.

Glucuronyl 3-sulfate occurs exclusively on distal unmyelinated terminals of selected sensory neurons in the peripheral nervous system

1995 ◽  
Vol 53 ◽  
pp. 958-959
Author(s):  
S.S. Spicer ◽  
B.A. Schulte
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Cerebral Cortex ◽  
Peripheral Nervous System ◽  
Sensory Neurons ◽  
Sensory Nerves ◽  
Tissue Antigens ◽  
The Central Nervous System ◽  
The Brain ◽  
Leu 7

Generation of monoclonal antibodies (MAbs) against tissue antigens has yielded several (VC1.1, HNK- 1, L2, 4F4 and anti-leu 7) which recognize the unique sugar epitope, glucuronyl 3-sulfate (Glc A3- SO4). In the central nervous system, these MAbs have demonstrated Glc A3-SO4 at the surface of neurons in the cerebral cortex, the cerebellum, the retina and other widespread regions of the brain.Here we describe the distribution of Glc A3-SO4 in the peripheral nervous system as determined by immunostaining with a MAb (VC 1.1) developed against antigen in the cat visual cortex. Outside the central nervous system, immunoreactivity was observed only in peripheral terminals of selected sensory nerves conducting transduction signals for touch, hearing, balance and taste. On the glassy membrane of the sinus hair in murine nasal skin, just deep to the ringwurt, VC 1.1 delineated an intensely stained, plaque-like area (Fig. 1). This previously unrecognized structure of the nasal vibrissae presumably serves as a tactile end organ and to our knowledge is not demonstrable by means other than its selective immunopositivity with VC1.1 and its appearance as a densely fibrillar area in H&E stained sections.

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