Lege Artis Medicinae

[Experimental investigation of the complex energy balance]

GARAMI András

DECEMBER 10, 2018

Lege Artis Medicinae - 2018;28(11-12)

[The complex energy balance includes maintenance of both normal body mass and body temperature. In the homeostasis regulation it is important that the activities of several physiologic processes are balanced with each other, for example, the balance between food intake and energy expenditure is crucial to maintain normal body mass, while the balance between heat production and heat loss is vital in determining body temperature. Obesity and loss of body weight, as well as fever and hypothermia are consequences of the dysregulation in energy balance. In our research, we studied receptorial and neurohumoral mechanisms involved in the maintenance and in the impairment of energy balance. This paper gives an overview of our most important findings, which served as the basis of the application submitted to and awarded with 3rd prize by the Prof. Dr. Laszlo Romics Memorial Foundation. We review the physiologic role of transient receptor potential channels, mostly of vanilloid-1 (formerly: capsaicin receptor) in the regulation of body temperature and body mass. Among the neuropeptides which take part in the maintenance of energy balance, we present the thermoregulatory effects of alpha-melanocyte stimulating hormone and pituitary adenylate cyclase-activating polypeptide. Last, among the molecular mechanisms of systemic inflammation, which is characterized by thermoregulation disorders (e.g., fever, hypothermia), we recap the role of the vanilloid-1 and neurokinin-1 receptor, and bilirubin.]

COMMENTS

0 comments

Further articles in this publication

Lege Artis Medicinae

[Editor’s Response to a Reader Correspondence Reflecting the Article “Health Economics in Hungary: Great Potential, Missed Opportunity?” [2018;28(10):431-438.] ]

NÉMETH Bertalan

Lege Artis Medicinae

[IgG4-related gastropathy mimicking malignancy]

NAGY Pál, KASZÁS Ilona, PÁK Gábor, TIBA Imre, FELFÖLDI Éva, HAMVAS József, BAGDI Enikő, KRENÁCS László

[The Immunoglobulin G4-related disease (IgG4-RD) along with its synonyms is recently a popular topic in the medical literature. This illness can affect almost every organ in the body therefore it is frequently discussed in any type of interdisciplinary forums. We presented an instructive case of IgG4-RD with gastric involvement in 2016. Hereby we share our pertinent experiences. We are not dealing with the IgG4-RD in general including its terminology problems, epidemiology, pathogenesis, detailed clinical/pathological appearances, diagnostic criteria and treatment. A 63-year-old male presented with symp­toms of pylorus stenosis. The endoscopic findings and CT images were interpreted as those of a malignant tumour in the antrum of the stomach. So a subtotal resection was performed although the biopsy showed reactive proliferation of plasma cells without evidence of malignancy. Pathological examination of the surgical specimen confirmed an IgG4- associated sclerosing inflammation. The patient had an uneventful recovery. Our case is an example of rare, isolated formof IgG4-RD. ]

Lege Artis Medicinae

[The Nobel Prize in Medicine 2018 ]

KOVÁCS Ferenc

Lege Artis Medicinae

[Mastitis and breastfeeding]

UNGVÁRY Renáta, MIKÓ-BARÁTH Eszter, KISS Eleonóra

[Various degrees of mastitis affect a significant percentage of breastfeeding mothers. Prevention and effective treatment are important public health issues due to the severe pain, malaise, high fever, and possible complications. Among other causes for early termination of breastfeeding, the most prominent reasons are the pain, prolonged healing, abscess due to mastitis and the frequent recurrence of the disease. Proper management of mastitis and alleviating the symptoms influence the length of breastfeeding and hence leads to a positive outcome for both the mother’s and her child’s long term health. Nevertheless, there are inconsistencies worldwide regarding the diagnosis, cure and prevention of mastitis. The treatments are done mostly on empirical basis. Even though numerous articles have been published on the subject, the unequivocal results are yet to come. This overview summarizes the current knowledge and the dilemmas about mastitis as well as the prevention opportunities and therapies. It also discusses the new results on breastmilk microbiome research, which might change the approach towards mastitis treatment.]

Lege Artis Medicinae

[Type 2 diabetes: what is the role of a General Practitioner in the treatment of diabetes?]

TORZSA Péter, OLÁH Ilona, HARGITTAY Csenge, KALABAY László

[The 2017 National Guidelines of the Hun­garian Diabetes Association emphasize the individual treatment of diabetic patients and the strong, goal-oriented regulation of carbohydrate metabolism from recogni­tion on. Beside monotherapy, primary dual or triple combination therapy may be applied in the treatment of patients. In primary care it’s the treatment of patients with type 2 diabetes where there is a lot to be done. We hope that the everyday use of the Professional Guidelines will contribute to a more successful diabetic care by General Practitioners (GPs). The holistic care of the GP’s team plays an important role in the primary, secondary and tertiary prevention of Type 2 diabetes, which accounts for more than 90% of all diabetic cases. ]

All articles in the issue

Related contents

Hypertension and nephrology

[Antihypertensive effect of rilmenidine focusing on the Hungarian multicenter trial VERITAS]

FARSANG Csaba, FINTA Ervin

[Summary in the antihypertensive therapy, in addition to the RAS-blockers (ACE-inhibitors or ARBs), calcium antagonists and thizid-like diuretics, other antihypertensive drugs with different mechanisms of actions, such as the imidazoline I1 receptor agonists, are beneficially used. Several international and Hungarian studies showed the results of the effects of these agents. Authors emphasize the effects of the VERITAS study showing that in hypertensive patients the imidazoline I1 receptor agonist, rilmenidine significantly decreased the office blood pressure as well as the blood pressure measured by ambulatory blood pressure monitoring (ABPM). The white-coat reaction and left ventricular hypertrophy (LVH) were also decreased. In a separate study involving hypertensive subjects rilmenidine significantly increased baroreflex sensitivity. This effect may contribute - mainly during daytime - to the antihypertensive effect. Authors summarise the most important actions of rilmenidine, and the selected publications on the results of the Hungarian and international investigations.]

LAM KID

[Bone status in praediabetic state - Relationship of bone density and energy homeostasis before the manifestation of type 2 diabetes mellitus]

BUDAY BARBARA, VITAI Márta, PACH Péter, LITERÁTI Nagy Botond, PÉTERFAI Éva, BEZZEGH Katalin, PAUER József, KORÁNYI LÁSZLÓ

[INTRODUCTION - All forms of diabetes are associated with increased fracture risk. In type 2 diabetes, bone mineral density is increased. In order to determine whether increased bone density is a consequence of diabetes-related metabolic changes or rather a primary alteration independent of these changes, we examined women and men with the following characteristics: normal glucose tolerance; genetically determined risk of T2DM but healthy on the basis of detailed metabolic tests; or incipient glucose intolerance, praediabetic state. PATIENTS AND METHODS - We included 72 men with normal glucose tolerance; seven men with normal glucose tolerance and first-degree relative(s) with diabetes; 64 body fat mass adjusted and BMI-adjusted men with glucose intolerance; 36 healthy women with normal glucose tolerance; 12 women with normal glucose tolerance and first-degree relative(s) with T2DM and 88 women with glucose intolerance. Muscle glucose uptake was measured by hyperinsulinaemic-normoglycaemic clamp, and bone density was measured by DEXA. RESULTS - In healthy men, the connection between leptin and BMDL1-4 is positive and the relationship between testosterone and BMDL1-4 is negative, but both correlations disappear in the early praediabetic stage. In the whole female study population, negative correlations were found between total BMD and adiponectin (r=-0.318, p<0.0001), and osteocalcin (r=-0.412, p<0.0000), which stayed significant after adjustments for body fat percent and age in case of impaired glucose tolerance. CONCLUSION - In women with healthy glucose metabolism who have first-degree relative(s) with diabetes, increased bone density is not related to changes in glucose metabolism. Our study emphasizes the substantial gender differences in the relationship between density of the femur and vertebrae and metabolism. Our data question the mediatory role of adiponectin shown in animal studies in the insulin-sensitizing, glucose metabolism improving effect of osteocalcin in men.]

Clinical Neuroscience

Autonomic nervous system may be affected after carpal tunnel syndrome surgery: A possible mechanism for persistence of symptoms after surgery

ONDER Burcu, KELES Yavuz Betul

After carpal tunnel surgery, some patients report complaints such as edema, pain, and numbness. Purpose – The aim of this study was to evaluate autonomic nervous system function in patients with a history of carpal tunnel surgery using sympathetic skin response (SSR). Thirty three patients (55 ±10 years old) with a history of unilateral operation for carpal tunnel syndrome were included in the study. The SSR test was performed for both hands. Both upper extremities median and ulnar nerve conduction results were recorded. A reduced amplitude (p=0.006) and delayed latency (p<0.0001) were detected in the SSR test on the operated side compared to contralateral side. There was no correlation between SSR and carpal tunnel syndrome severity. Although complex regional pain syndrome does not develop in patients after carpal tunnel surgery, some of the complaints may be caused by effects on the autonomic nervous system.