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Monda M, Sullo A, Viggiano A, De Luca V. Eating Behavior is Associated to Sympathetic Activation Induced by ICV Injection of Prostaglandin E1in the Rat. Nutr Neurosci 2016; 2:69-74. [DOI: 10.1080/1028415x.1999.11747264] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Holden JE, Wang E, Moes JR, Wagner M, Maduko A, Jeong Y. Differences in carbachol dose, pain condition, and sex following lateral hypothalamic stimulation. Neuroscience 2014; 270:226-35. [PMID: 24759771 PMCID: PMC6025747 DOI: 10.1016/j.neuroscience.2014.04.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 04/09/2014] [Accepted: 04/09/2014] [Indexed: 01/21/2023]
Abstract
Lateral hypothalamic (LH) stimulation produces antinociception in female rats in acute, nociceptive pain. Whether this effect occurs in neuropathic pain or whether male-female sex differences exist is unknown. We examined the effect of LH stimulation in male and female rats using conditions of nociceptive and neuropathic pain. Neuropathic groups received chronic constriction injury (CCI) to induce thermal hyperalgesia, a sign of neuropathic pain. Nociceptive rats were naive for CCI, but received the same thermal stimulus following LH stimulation. To demonstrate that CCI ligation produced thermal hyperalgesia, males and females received either ligation or sham surgery for control. Both males and females demonstrated significant thermal hyperalgesia following CCI ligation (p<0.05), but male sham surgery rats also showed a significant left-right difference not present in female sham rats. In the second experiment, rats randomly assigned to CCI or nociceptive groups were given one of three doses of the cholinergic agonist carbachol (125, 250, or 500 nmol) or normal saline for control, microinjected into the left LH. Paw withdrawal from a thermal stimulus (paw withdrawal latency; PWL) was measured every 5 min for 45 min. Linear mixed models analysis showed that males and females in both pain conditions demonstrated significant antinociception, with the 500-nmol dose producing the greatest effect across groups compared with controls for the left paw (p<0.05). Female CCI rats showed equivalent responses to the three doses, while male CCI rats showed more variability for dose. However, nociceptive females responded only to the 500-nmol dose, while nociceptive males responded to all doses (p<0.05). For right PWL, only nociceptive males showed a significant carbachol dose response. These findings are suggestive that LH stimulation produces antinociception in male and female rats in both nociceptive and neuropathic pain, but dose response differences exist based on sex and pain condition.
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Affiliation(s)
- J E Holden
- The University of Michigan School of Nursing, 400 N. Ingalls Building, Ann Arbor, MI 48109-5482, United States; College of Nursing Science, Kyung Hee University, 26 Kyunghee-daero, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
| | - E Wang
- University of Illinois at Chicago, College of Applied Health Sciences, 1919 W. Taylor Street, Chicago, IL 60612, United States.
| | - J R Moes
- Calvin College Nursing Department, Science Building Room 245, 1734 Knollcrest Circle SE, Grand Rapids, MI, United States.
| | - M Wagner
- The University of Michigan School of Nursing, 400 N. Ingalls Building, Ann Arbor, MI 48109-5482, United States.
| | - A Maduko
- The University of Michigan School of Nursing, 400 N. Ingalls Building, Ann Arbor, MI 48109-5482, United States.
| | - Y Jeong
- College of Nursing Science, Kyung Hee University, 26 Kyunghee-daero, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
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Monda M, Vicidomini C, Viggiano A, Sampaolo S, Di Iorio G, Viggiano A, Viggiano E, De Luca B. Inhibition of prostaglandin synthesis reduces the induction of MyoD expression in rat soleus muscle. J Muscle Res Cell Motil 2009; 30:139-44. [DOI: 10.1007/s10974-009-9182-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2009] [Accepted: 05/19/2009] [Indexed: 10/20/2022]
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Rau V, Grijalva CV. Indomethacin attenuates hyperthermia produced by anterior coronal lateral hypothalamic knife cuts. Brain Res Bull 2004; 64:53-8. [PMID: 15275957 DOI: 10.1016/j.brainresbull.2004.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2004] [Accepted: 05/06/2004] [Indexed: 11/20/2022]
Abstract
Electrolytic lesions of the lateral hypothalamus (LH) and coronal knife cuts of fibers anterior to the LH produce an elevation in core body temperature, or hyperthermia. Prostaglandin has been shown to mediate hyperthermia produced by electrolytic LH lesions. The present study characterizes the time course and the role of prostaglandin in mediating knife-cut-induced hyperthermia. Results show that the prostaglandin synthesis inhibitor indomethacin significantly attenuates hyperthermia produced by the knife cuts, suggesting that prostaglandin is involved in mediating this temperature increase. A disruption of axonal fibers that project from the LH to the preoptic area is postulated to be responsible for the temperature increase. There was no effect of knife cuts on food intake and body weight loss, which were also measured, suggesting that this fiber system is not involved in feeding behavior.
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Affiliation(s)
- Vinuta Rau
- Department of Psychology, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, CA 90095-1563, USA.
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Abstract
The function of brown adipose tissue is to transfer energy from food into heat; physiologically, both the heat produced and the resulting decrease in metabolic efficiency can be of significance. Both the acute activity of the tissue, i.e., the heat production, and the recruitment process in the tissue (that results in a higher thermogenic capacity) are under the control of norepinephrine released from sympathetic nerves. In thermoregulatory thermogenesis, brown adipose tissue is essential for classical nonshivering thermogenesis (this phenomenon does not exist in the absence of functional brown adipose tissue), as well as for the cold acclimation-recruited norepinephrine-induced thermogenesis. Heat production from brown adipose tissue is activated whenever the organism is in need of extra heat, e.g., postnatally, during entry into a febrile state, and during arousal from hibernation, and the rate of thermogenesis is centrally controlled via a pathway initiated in the hypothalamus. Feeding as such also results in activation of brown adipose tissue; a series of diets, apparently all characterized by being low in protein, result in a leptin-dependent recruitment of the tissue; this metaboloregulatory thermogenesis is also under hypothalamic control. When the tissue is active, high amounts of lipids and glucose are combusted in the tissue. The development of brown adipose tissue with its characteristic protein, uncoupling protein-1 (UCP1), was probably determinative for the evolutionary success of mammals, as its thermogenesis enhances neonatal survival and allows for active life even in cold surroundings.
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Affiliation(s)
- Barbara Cannon
- The Wenner-Gren Institute, The Arrhenius Laboratories F3, Stockholm University, Stockholm, Sweden
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Monda M, Viggiano A, De Luca V. An aversive diet as thiamine-free food blocks food-induced release of excitatory amino acids in the accumbens. ACTA PHYSIOLOGICA SCANDINAVICA 2003; 178:197-203. [PMID: 12823177 DOI: 10.1046/j.1365-201x.2003.01136.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS As the nucleus accumbens shell plays an important role in the control of eating behaviour, the aim of this study was to evaluate the changes in: (a) the level of aspartic and glutamic acids in the accumbens shell of conditioned rats after the presentation of an aversive diet containing thiamine-free food; (b) the temperature of interscapular brown adipose tissue, effector of thermogenesis related to food intake. METHODS The concentration of aspartic and glutamic acids in the accumbens shell, and brown adipose tissue temperature were monitored in conditioned male Sprague-Dawley rats before and after the presentation of thiamine-free food or standard laboratory food. The aspartic and glutamic acids were collected using a microdialysis probe and quantified by HPLC. Food intake was also measured. RESULTS The results indicated that an intake of standard laboratory food induced an increase in the level of aspartic and glutamic acids, and an elevation in temperature of brown adipose tissue; whereas an intake of thiamine-free food blocks these increases in the conditioned animals. CONCLUSION The thiamine-free diet modifies the release of excitatory amino acids in the nucleus accumbens of conditioned animals. This diet also affects thermogenesis.
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Affiliation(s)
- M Monda
- Department of Experimental Medicine, Section of Human Physiology, Second University of Naples, Naples, Italy
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Monda M, Viggiano A, Mondola P, De Luca V. Inhibition of prostaglandin synthesis reduces hyperthermic reactions induced by hypocretin-1/orexin A. Brain Res 2001; 909:68-74. [PMID: 11478922 DOI: 10.1016/s0006-8993(01)02606-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This experiment tested (i) the effect of orexin A injected into a lateral cerebral ventricle on sympathetic and thermogenic activity and (ii) the involvement of prostaglandins in these phenomena. The firing rates of the sympathetic nerves to interscapular brown adipose tissue (IBAT), along with IBAT and colonic temperatures and heart rate were monitored in urethane-anesthetized male Sprague-Dawley rats before and 6 h after an injection of orexin A (1.5 nmol) into the lateral cerebral ventricle. The same variables were monitored in rats with an intraperitoneal administration of lysine acetylsalicylate (100 mg/kg bw), an inhibitor of prostaglandins synthesis. The results show that orexin A increases the sympathetic firing rate, IBAT and colonic temperatures and heart rate. This increase is reduced by lysine acetylsalicylate. These findings suggest that orexin A affects sympathetic activity, which controls body temperature. Prostaglandins are involved in this control.
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Affiliation(s)
- M Monda
- Department of Experimental Medicine, Section of Human Physiology, Second University of Naples, via Costantinopoli 16, 80138, Naples, Italy.
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Liu H, Mihailoff GA. Hypothalamopontine projections in the rat: anterograde axonal transport studies utilizing light and electron microscopy. THE ANATOMICAL RECORD 1999; 255:428-51. [PMID: 10409816 DOI: 10.1002/(sici)1097-0185(19990801)255:4<428::aid-ar9>3.0.co;2-s] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Projections to the basilar pontine nuclei (BPN) from a variety of hypothalamic nuclei were traced in the rat utilizing the anterograde transport of biotinylated dextran amine. Light microscopy revealed that the lateral hypothalamic area (LH), the posterior hypothalamic area (PH), and the medial and lateral mammillary nuclei (MMN and LMN) are the four major hypothalamic nuclei that give rise to labeled fibers and terminals reaching the rostral medial and dorsomedial BPN subdivisions. Hypothalamopontine fibers extended caudally through the pontine tegmentum dorsal to the nucleus reticularis tegmenti pontis and then coursed ventrally from the main descending bundle toward the ipsilateral basilar pontine gray. Some hypothalamopontine fibers crossed the midline in the tegmental area just dorsal to the pontine gray to terminate in the contralateral BPN. Electron microscopy revealed that the ultrastructural features of synaptic boutons formed by axons arising in the LH, PH, MMN, and LMN are similar to one another. All labeled hypothalamopontine axon terminals contained round synaptic vesicles and formed asymmetric synaptic junctions with dendritic shafts as well as dendritic appendages, and occasionally with neuronal somata. Some labeled boutons formed the central axon terminal in a glomerular synaptic complex. In summary, the present findings indicate that the hypothalamus projects predominantly to the rostral medial and dorsomedial portions of the BPN which, in turn, provide input to the paraflocculus and vermis of the cerebellum. Since the hypothalamic projection zones in the BPN also receive cerebral cortical input, including limbic-related cortex, the hypothalamopontine system might serve to integrate autonomic or limbic-related functions with movement or somatic motor-related activity. Alternatively, since the cerebellum also receives direct input from the hypothalamus, the BPN may function to provide additional somatic and visceral inputs that are used by the cerebellum to perform the integrative function.
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Affiliation(s)
- H Liu
- Department of Anatomy, University of Mississippi Medical Center, Jackson, Mississippi 39216-4505, USA
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Monda M, Viggiano A, Sullo A, De Luca V. Aspartic and glutamic acids increase in the frontal cortex during prostaglandin E1 hyperthermia. Neuroscience 1998; 83:1239-43. [PMID: 9502261 DOI: 10.1016/s0306-4522(97)00448-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The aim of the present experiment was to evaluate the role played by aspartic acid and glutamic acid of frontal cerebral cortex during the hyperthermia induced by prostaglandin E1. Two groups of six Sprague Dawley male rats were anaesthetized with ethyl-urethane. The frontal cortical concentrations of aspartic and glutamic acids, the firing rate of the sympathetic nerves to the interscapular brown adipose tissue, the colonic and interscapular brown adipose tissue temperatures were monitored both before and after an intracerebroventricular injection of prostaglandin E1 (500 ng) or saline. Aspartic and glutamic acids were collected using a microdialysis probe placed in the frontal cortex. Concentrations of aspartic and glutamic acids were measured by high-pressure liquid chromatography with fluorescence detector. Prostaglandin E1 induced an increase in the concentrations of aspartic and glutamic acids, in the firing rate of sympathetic nerves and in the colonic and interscapular brown adipose tissue temperatures. The findings of the present experiment indicate that an intracerebroventricular injection of prostaglandin E1 causes release of aspartic and glutamic acids in the frontal cortex.
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Affiliation(s)
- M Monda
- Dipartimento di Fisiologia Umana e Funzioni Biologiche Integrate Filippo Bottazzi, Seconda Università degli Studi di Napoli, Italy
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Monda M, Sullo A, De Luca V, Viggiano A, Pellicano MP. Acute lesions of the ventromedial hypothalamus reduce sympathetic activation and thermogenic changes induced by PGE1. JOURNAL OF PHYSIOLOGY, PARIS 1997; 91:285-90. [PMID: 9457660 DOI: 10.1016/s0928-4257(97)82408-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The aim of this experiment was to evaluate the effects of an intracerebroventricular (icv) injection of prostaglandin E1 (PGE1) on the sympathetic activation and the thermogenic changes in rats with acute lesions of the ventromedial hypothalamus (VMH). Four groups of six Sprague-Dawley male rats were anesthetized with ethyl-urethane. The firing rate of the sympathetic nerves innervating the interscapular brown adipose tissue (IBAT) and the colonic and IBAT temperatures were monitored both before and after one of the following treatments: 1) VMH lesion plus icv injection of PGE1 (500 ng); 2) VMH lesion plus icv injection of saline: 3) sham lesion plus icv injection of PGE1; and 4) sham lesion plus icv injection of saline. PGE1 induced an increase in the firing rate of IBAT nerves and the colonic and IBAT temperatures. These effects were reduced by VMH lesion. The findings indicate that acute lesions of the VMH reduce the effects of PGE1 and seem to suggest a possible role played by the VMH in the control of the sympathetic activation and the thermogenic changes during PGE1 hyperthermia.
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Affiliation(s)
- M Monda
- Dipartimento di Fisiologia Umana e Funzioni Biologiche Integrate Filippo Bottazzi, Seconda Università degli Studi di Napoli, Naples, Italy
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Monda M, Sullo A, De Luca B. Lesions of the ventromedial hypothalamus reduce postingestional thermogenesis. Physiol Behav 1997; 61:687-91. [PMID: 9145938 DOI: 10.1016/s0031-9384(96)00520-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The aim of this experiment was to evaluate the effects of ventromedial hypothalamus lesions on the thermogenic changes that follow food intake. Four groups of six Sprague-Dawley male rats were used. Under anesthesia with pentobarbital, the animals in the first and second groups received lesions at the ventromedial hypothalamus, and animals in the third and fourth groups received sham lesions. Body weight and food intake were monitored daily until the experimental procedure began. Twenty days after lesion, oxygen consumption, firing rate of sympathetic nerves to interscapular brown adipose tissue (IBAT), and IBAT temperature were monitored for 45 min both before and after 5 g food intake in 24 h fasted rats from the first and third groups. The same variables were measured in the animals of the second and fourth groups 50 days after receiving the lesions. Lesion placements were histologically verified. The results showed that lesions produced hyperphagia and obesity. Firing rate of nerves to IBAT, IBAT temperature, and oxygen consumption increased after food intake in sham-lesioned rats. This increase was significantly reduced by the lesion at both the 20- and 50-day time points. These findings indicate that the ventromedial hypothalamus controls postingestional activation of sympathetic discharge to IBAT. The reduction of postingestional thermogenesis could be involved in the development of obesity induced by lesion of the ventromedial hypothalamus.
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Affiliation(s)
- M Monda
- Dipartimento di Fisiologia Umana e Funzioni Biologiche Integrate Filippo Bottazzi, Seconda Università di Napoli, Italy
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