Lege Artis Medicinae

[THE ROLE OF THE ENDOCANNABINOID SYSTEM]

JÁRAI Zoltán

DECEMBER 16, 2006

Lege Artis Medicinae - 2006;16(12)

[Cannabinoid research in the last two decades became one of the most important fields in medical science, mainly because of the discovery of the endocannabinoid system and the understanding of the close connections between this system and several important diseases and pathological states. The endocannabinoid system has been shown to be present and active in many tissues and organs including the central nervous, gastrointestinal and reproductive systems, liver, lungs and bones. Its role in eye function, malignant diseases, pain and inflammation has also been studied. This review gives a summary of all these results with special attention to the role of the endocannabinoid system in energy metabolism and cardiovascular regulation.]

COMMENTS

0 comments

Further articles in this publication

Lege Artis Medicinae

[NEBIVOLOL FOR THE TREATMENT OF HYPERTENSION AND CARDIAC FAILURE]

JERMENDY György

[Beta-receptor blocking agents are considered a well defined class of drugs for treating hypertension and heart failure. Nebivolol, a thirdgeneration beta-blocker that combines marked beta-1-receptor selectivity with a vasodilator and antioxidant effect, has relatively recently become available in Hungary. The vasodilator effect of nebivolol has proved to be mediated by the endothelial NO pathway. Due to its neutral metabolic effect, nebivolol can safely be used in patients with glucose intolerance or lipid disorder. Nebivolol is a safe and well tolerated antihypertensive agent. Based on the results of recent clinical trials, nebivolol is also indicated for the treatment of heart failure.]

Lege Artis Medicinae

[The Art of Forgiving Michael E. McCullough, Steven J. Sandage, Everett L. Worthington: To Forgive Is Human: How to Put Your Past in the Past]

FERENCZI Andrea

Lege Artis Medicinae

[Chocolate]

MATOS Lajos, LENGYEL Margit

Lege Artis Medicinae

[The 48. Congress of the Hungarian Society of Gastroenterology - 17-21. June 2006. Szeged]

IZBÉKI Ferenc

Lege Artis Medicinae

[I’ll Visit the Minister!]

KRAMER Imre

All articles in the issue

Related contents

Clinical Neuroscience

[Hypothalamic regulation of the food intake]

PALKOVITS Miklós

[The central regulation of the food intake is organized by a long-loop mechanism involving humoral signals and afferent neuronal pathways to the hypothalamus, obligatory processing in hypothalamic neuronal circuits, and descending commands through vagal and spinal neurons to the body. Receptors sensitive to glucose metabolism, body fat reserves, distension of the stomach, as well as neuropeptide and cannabinoid receptors have been identified and localized in the hypothalamus. Five groups of cells in the hypothalamus - arcuate, paraventricular, ventromedial and dorsomedial nuclei, and the dorsolateral hypothalamic area - contain neurons with either anorexic actions (α-MSH, CART peptide, corticotropin-releasing hormone, urocortin III, cholecystokinin, glucagon-like peptides) or that stimulate food intake (neuropeptide Y, agouti-related peptide, orexins, melanin concentrating hormone, galanin). Intrahypothalamic neuronal circuits exist between these peptidergic neurons including the arcuate-paraventricular and arcuate-dorsolateral hypothalamic projections. Circulating substances carrying signals connected to changes in body food homeostasis and energy balance (leptin, ghrelin, insulin, glucose) enter the hypothalamus mainly through the arcuate nucleus. Neurons in the medulla oblongata that express leptin and insulin receptors, as well as neuropeptide mediators project to the hypothalamus. Vica versa, hypothalamic neurons give rise to projections to autonomic centers in the brainstem and the spinal cord with potential for stimulation or inhibition of food intake, energy balance and ingestion behavior.]

Lege Artis Medicinae

[NON-PHARMACOLOGIC TREATMENT OF TYPE 2 DIABETES AND METABOLIC SYNDROME]

TABÁK Gy. Ádám

[Type 2 diabetes mellitus and metabolic syndrome are important risk factors of cardiovascular morbidity and mortality. Both diseases present with a similar set of metabolic disturbances including hyperglycaemia, hyperlipidaemia, hypertension and obesity. Therefore, their nonpharmacological treatment is based on similar principles. Medical nutritional therapy aims to promote moderate weight loss through decreased energy intake, and to correct metabolic disturbances by ensuring appropriate composition of micro- and macronutrients. In a healthy diet, carbohydrates and cis-fatty acids make up approximately 60 to 70% of total energy intake. It is important to reduce the intake of saturated fatty acids and trans-fatty acids. The consumption of foods with low glycaemic index may be beneficial for diabetic patients. The increase of physical activity (both aerob and resistance exercise) is useful in maintaining weight loss, and it also improves blood lipid levels and blood pressure. Abandonment of smoking results in significant cardiovascular risk reduction. Lifestyle changes should include all of the above factors in order to achieve most reduction in morbidity and mortality associated with type 2 diabetes mellitus and the metabolic syndrome.]

Hypertension and nephrology

[A new perspective on the extrarenal regulation of sodium and water balance]

AGÓCS Róbert István, SUGÁR Dániel, SULYOK Endre, SZABÓ J. Attila

[The regulation of the homeostasis of sodium and water is one of the oldest fields in medical research. Our article exhibits a new aspect of sodium balance: the concept of the regulated sodium storage taking place in the interstitium of the skin. We summarize the history of the research carried out in this area, beginning with the discovery of osmotically inactive sodium reservoirs to the localization of these buffers and the elucidation of the role of a regulating cutaneous cascade, which has an effect on blood pressure. Glycosaminoglycan (GAG) macromolecules present in the skin interstitium, come into reversible contact with the excess of dietary sodium intake. Thus in addition to the known role of the kidney, the above system may contribute to the regulation of sodium- and water balance and thereby to the regulation of blood pressure.]

LAM KID

[Modern medical and dietary treatment of gout in light of the new American guidelines]

SZEKANECZ Zoltán

[After several decades of “silence”, in the past few years a number of new data and treatment options have become available regarding the management of hyperuricaemy and gout. We also have a better understanding of the immunpathogenic processes of the disease, resulting in new medicines, as well as dietary and lifestyle modifications. Finally, in 2012, the American College of Rheumatology (ACR) has published new guidelines, which provide detailed algorhythms for each stage of gout and for special clinical situations. Although some aspects of clinical practice in Europe are different from that in the US, the new guidelines are applicable - with the necessary adaptations - in Hungary for the efficient treatment of gout and its comorbidities.]

Hypertension and nephrology

[Changing dietary guidelines in obesity. MOMOT recommendation]

PADOS Gyula, SIMONYI Gábor, AUDIKOVSZKY Mária, BEDROS J. Róbert

[In the 70s and 80s due to the heart attack „epidemic” the low fat diet was encouraged based on the cholesterol theory, with moderate success. At the same time, the consumption of carbohydrates increased with the frequency of obesity rising from 1971 to 30% in the USA. Foods with high glicemic index and rich in carbohydrates result in a fast increase in glucose level, insuline actions also leading to glucose – fatty acid transformation and weight gain. Over the last decades several comparative trials have proven that with the low carb diet one can lose about 3- more than with the low fat diet in half a year. The excessive low carbohydrate Atkins diet over 1 year (), was superior even to ZONE (), LEARN (), ORNISH () diet, in another trial, over two years also the „low fat” diet. International Association for the Study of Obesity (IASO) recommends an increased protein intake (15 → 25%) along with carbohydrate with low glicemic index (GI). According to the summarized guidelines of the Hungarian Society of Obesitology and Excercise Therapy (MOMOT) low calorie (1200-1500 kcal / day), low-carb (<45%) – low-GI, high-protein (≥ 25%), low-fat (38→30%) diet is recommended, by witch a weight loss of 10 kg/half year can be expected. After half a year patient compliance deteriorates and they can hardly keep even the low-carb diet, whose significant advantage diminishes by this. We hope that patient compliance can be helped with two new appetite decreasing drugs, namely lorcaserin and a combination of phentermin and topiramat. Future dietary recommendations may be influenced by the new guideline issued in November 2013 by AHA/ACC, and the Obesity Society the final approval of which by NHLBI can be expected by June 2014.]