Lege Artis Medicinae

[Metformin - but what else is in the box?]

KISS Zsófia1, KIS János Tibor1

APRIL 22, 2011

Lege Artis Medicinae - 2011;21(04)

[Metformin is currentlly the most commonly prescribed oral antidiabetic drug for the treatment of patients with type 2 diabetes mellitus. Its administration is limited by the contraindications and the possible gastrointestinal side effects. In Hungary, metformin is currently available in numerous forms, among which the extended-release tablets are distinguished because of their tolerability. The authors summarise the most recent data about the favourable features of metformin, help clinicians to choose the appropriate preparation of metformin, and highlight the administration procedures that help to avoid gastrointestinal side effects.]

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  1. Budai Irgalmasrendi Kórház Kht.

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Further articles in this publication

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[Diagnosis and therapy of cerebrovascular diseases - Retrospection to the efforts for managing patients with stroke in the last two decades in Hungary]

NAGY Zoltán

[The first Hungarian guideline regarding management of stroke patients has been published in 1990 (LAM). In the past 21 years, clinical practice in stroke care has improved significantly in Hungary and is currently performed according to evidencebased protocols issued by international and national consensus meetings. Currently the EUSI guideline published in 2008 and the management protocol written in the same year by the board of the Hungarian Stroke Society are followed. The most important changes of the past 20 years in stroke management have been the following: the priority concept and lysis therapy have become common in daily practice, emergency examination has been performed in selected TIA cases and an up-to-date practice has been established in stroke prevention. The increasing number of lysis therapy each year demonstrates an improving organisation of stroke care and improving professional preparedness. In selected stroke centres, all the modern technical facilities are available, on the other hand, substantial development is needed in a number of stroke units. A national stroke registry and quality control are warranted for further professional development in Hungary.]

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[Diagnosis of diabetes mellitus, treatment and care of diabetic patients in the adulthood - Novelties in the position statement of the Hungarian Diabetes Association, 2011]

JERMENDY György

[The position statement of the Hungarian Diabetes Association has been renewed in 2011. The new version of the position statement, comparing to that of the formerly published one in 2009, implies some new data which are currently reviewed. Besides target value of antidiabetic treatment the importance of the target range is emphasized. Details about the monogenic forms of diabetes and the role of the continuous glucose monitoring system are discussed. A treatment algorithm for type 2 diabetes is published and the use of newly available antidiabetic drugs is summarized. Finally, the importance of the early diagnosis and the prevention of diabetes mellitus are pointed out.]

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[Fulvestrant therapy in elderly: long survival, good quality of life]

UHLYARIK Andrea, RIEDL Erika, ÁGOSTON Péter, SARKADI Gábor, PÁPAI Zsuzsanna

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[Homeostasis - The art of life and equilibrium]

KAPÓCS Gábor

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[IgG4-related disease]

ZEHER Margit

[IgG-4-related disease is a clinical entity characterised by significant elevation in serum IgG-4 levels, infiltration of IgG-4+ plasma cells into the involved tissues, enhanced fibrosis, and good therapeutic response to corticosteroids. The IgG-4 associated disease mostly affects two organs. The salivary and lacrimal gland enlargement and inflammation is known as Mikulicz’s disease, which had been previously known as a subtype of Sjögren’s syndrome for a long time. The other commonly involved organ is the pancreas, in which a special form of chronic pancreatitis, namely autoimmune pancreatitis develops. IgG-4 associated disease as a separate disease has been suggested by Japanese authors. Previously published data support the common pathogenesis of autoimmune pancreatitis and Mikulicz’s disease. Besides these two manifestations, similar histological lesions and elevated IgG-4 levels have been demonstrated in many other organs. At present, it is not clearly demonstrated whether IgG-4 syndrome is an autoimmune disorder, and we do not know the exact reason of the elevated IgG-4 levels in patients with this syndrome. IgG-4 is a regulatory immunoglobulin, the main function of which is to decelerate immune responses, thus its pathologic role in tissue destruction is difficult to explain. It is not clear either, whether IgG-4 syndrome is indeed a single disease, or only an example of overlapping symptoms of various diseases. On the basis of the characteristic histological lesions in various organs, IgG-4 syndrome is similar to multi-organ diseases, such as sarcoidosis or vasculitis.]

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[The role of metformin in the glucose-lowering therapy of patients with type 2 diabetes]

JERMENDY György

[Metformin is the oral antidiabetic drug of choice for patients with type 2 diabetes. Its effect is predominantly based on the reduction of insulin resistance by inhibiting hepatic glucose production. Metformin can be used as an initial oral antidiabetic drug at the start of, or in case of the failure of lifestyle modifications. Metformin is also used in dual or triple oral antidiabetic combinations, however, its use should not be suspended even if initiation of insulin therapy is indicated in patients with type 2 diabetes. Metformin does not increase bodyweight and the risk of hypoglycaemia, and recent data suggest that it decreases the risk of tumour development. Today, an extended- release (XR) formulation is also available besides the traditional one, which not only simplifies the treatment, but might also reduce the incidence of gastrointestinal adverse effects.]

LAM Extra for General Practicioners

[METFORMIN - BUT WHAT ELSE IS IN THE BOX?]

KISS Zsófia, KIS János Tibor

[Metformin is currentlly the most commonly prescribed oral antidiabetic drug for the treatment of patients with type 2 diabetes mellitus. Its administration is limited by the contraindications and the possible gastrointestinal side effects. In Hungary, metformin is currently available in numerous forms, among which the extended-release tablets are distinguished because of their tolerability. The authors summarise the most recent data about the favourable features of metformin, help clinicians to choose the appropriate preparation of metformin, and highlight the administration procedures that help to avoid gastrointestinal side effects.]

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[Several questions of medical treatments in polycystic ovary syndrome]

BAJNOK László

[Polycystic ovary syndrome is an endemic disease, thus its treatment is of great importance. In polycystic ovary syndrome, metformin decreases androgen levels, improves menstrual irregularity, hirsutism, ovulation ratio, and the efficiency of lifestyle interventions on visceral obesity, endothelial function and LDL-cholesterol level. It seems plausible to suppose that metformin decreases the incidence of diabetes in this group of patients. Metformin is superior to oral contraceptives/antiandrogens in respect of its effect on triglyceride level and insulin sensitivity, however, it is less effective in decreasing androgen levels, normalisation of the menstrual cycle and supposedly in the prevention of endometrial cancer. Metformin therapy improves fertility, however, when infertility is the main problem, it is not indicated as the primary treatment. In this case, ovulation induction, ovary drilling, as well as in vitro fertilization are warranted that can be supported by metformin therapy is some cases.]

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[The role of the DPP-4 inhibitor sitagliptin in the therapy of type 2 diabetes, in light of the new guidelines]

HIDVÉGI Tibor

[Type 2 diabetes has become a global public health problem, threatening the economies of all nations, as a consequence of rapid urbanisation, changing eating habits, sedentary lifestyle and obesity. Asian populations tend to develop diabetes at younger ages and lower body mass index compared with Caucasians. The latest guidelines of the American Diabetes Association and the European Association for the Study of Diabetes recommend lifestyle interventions as the first step for patients with newly diagnosed type 2 diabetes. The widely used metformin remains one of the first-line drugs for type 2 diabetes. If monotherapy alone does not achieve or maintain the target HbA1c level, addition of a second oral agent is recommended as a second step. The highly selective dipetidyl peptidase-4 inhibitor sitagliptin and metformin are efficient and well tolerable. The complementary effects of sitagliptin and metformin lead to an efficient, safe and long-term improvement in glycaemic control.]

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[THE ROLE AND METHODS OF IMPROVING INSULIN SENSITIVITY AND BETA-CELL FUNCTION IN TYPE 2 DIABETES]

GYIMESI András, TÁRNOK Enikő, TAYBANI Zoltán

[Increased knowledge on the pathogenesis of type 2 diabetes has considerably transformed the principles and practice of treatment. Insulin resistance and beta-cell dysfunction, the two main components of the pathogenesis both play a role in the conversion of normal glucose metabolism, through impaired glucose tolerance, into type 2 diabetes. Decreased insulin sensitivity, with or without beta-cell dysfunction, is present in the vast majority cases, therefore, its treatment is essential. Physical activity is known to improve insulin sensitivity. The primary action of the recommended first-line pharmacological agent metformin is the inhibition of hepatic glucose production but it also moderately stimulates muscle glucose uptake. Glitazones are insulin sensitizers that increase glucose uptake in muscle and adipose tissue and moderately decrease hepatic glucose production. Some evidence suggests that α-glucosidase inhibitors and also certain insulin secretagogues can improve the effect of insulin. Early detection of the pathologic state and an efficient treatment to improve both insulin sensitivity and beta-cell function are essential in order to slow the progression and prevent the development of complications in type 2 diabetes.]