20 years since the establishment of the BANTAO association (Balkan Cities Association of Nephrology, Dialysis, Transplantation and Artificial Organs).

The Balkan Cities Association of Nephrology, Dialysis, Transplantation and Artificial Organs (BANTAO) was born in Ohrid on October 9, 1993. The war in former Yugoslavia negatively affected the development of nephrology and also the connections among the nephrologists from the Balkans. However, there was willingness for further mutual collaboration between the nephrologists from the Balkans. The war in Yugoslavia created hate among people, between the newly established countries, and there were problems with the recognition of the names of the new countries, and so, the nephrologists decided to apply the ancient principle of using the names of the cities, instead of the countries, as the founders of the Association. The main goal of BANTAO is to promote scientific and technical cooperation in the fields of renal disease and artificial organs between the regions on the Balkan Peninsula and the world, to give an opportunity for exchange of experience and knowledge among the experts in the area and to engage in collaborative projects in order to demonstrate that cooperation is possible even on the turbulent Balkan Peninsula. The I BANTAO congress was held in Varna from September 22 to 24th, 1995 (President--D. Nenov, Varna). The II congress of BANTAO was held from September 6th to 10th, 1997 in Struga, (President--M. Polenakovic, Skopje). The III BANTAO congress was held in Belgrade from September 18th to 20th, 1998 (President--Lj. Djukanovic, Belgrade). The IV congress of BANTAO was held in Izmir from 14th to 16th November 1999 (President--A. Akcicek, Izmir). The V Congress of BANTAO was held in Thessaloniki from September 30th to October 3rd, 2001 (President--P. Stathakis, Athens). The VI Congress of BANTAO was held for the second time in Varna from 6th to 9th October 2003 (President--D. Nenov, Varna). The VII congress of BANTAO was held from September 8th to 11th, 2005 in Ohrid, (President--M. Polenakovic, Skopje). The VIII BANTAO congress was held in Belgrade, 16-19 September 2007 (President--V. Nesic, Belgrade). The IX BANTAO congress was held in Antalya, 18-22 November 2009 (President--A. Basci, Izmir). The X BANTAO congress was held from 13 to 15 October 2011 in Chalkidiki (President--D. Tsakiris, Thessaloniki). The XI BANTAO congress is being held on 26-29 September 2013 in Timisoara (President--A. Schiller, Timisoara). At the VII BANTAO Congress for the first time a CME Course was organized by ERA/EDTA and ISN/COMGAN entitled "Frontiers in Nephrology" with seven distinguished speakers. Very important event in the existence of BANTAO is the appearance of the BANTAO journal in 2003. The BANTAO journal has been published biannually since 2003. In the past 10 years, 20 regular issues; 2 supplements (Antalia and Chalkidiki congresses) have been published. Editors of the journal were as follows: 2003-2005--D. Nenov, Editor; 2005-2009--A. Basci, Editor; 2009--Goce Spasovski, Editor. Until now 332 papers have been published. The BANTAO journal is on EBSCO, DOAJ, SCOPUS. After the First Congress of BANTAO, F. Valderrábano, chairman of the EDTA--ERA Registry, at that time, wrote in Nephrology Dialysis Transplantation (1996) 11:740: "Nephrologists of the Balkan countries meet across political frontiers and war fronts--an example to politicians! BANTAO: a new European Medical Association overcomes Political obstacles." Despite the difficulties imposed by major events, such as devastating wars and catastrophic earthquakes in many countries of the Balkan Peninsula BANTAO has made considerable progress. The BANTAO Congress was established as the major scientific and institutional forum for Balkan nephrologists, with its own journal, indicating our will to communicate, to collaborate, to get to know each other and to share our difficulties. Now, we expect further successful work of BANTAO.

[IgA nephropathy: clinico-morphologic correlations]. / IgA nefropatija: klinicko-morfoloska korelacija.

IgA nephropathy is glomerular disease characterized by the presence of IgA dominant or codominant immunoglobuline deposits in glomerular mesangium which can be demonstrated by immunofluorescence. Clinical manifestations of IgA nephropathy in the majority of cases is hematuria which can be macro or microscopic, isolated or combined with proteinuria, which can be of nephrotic range. The prognosis of the disease is better if presented with haematuria. Intensity of morphologic changes as well as the prognosis is in correlation with the amount of proteinuria. The prognosis is better in children.

[Adhesion molecules in Wilm's tumor: expression and significance of beta-catenin (part II)]. / Adhezioni molekuli u Wilms-ovom tumoru: ekspresija i znacaj beta-katenina (II deo).

Beta-catenin is a glicoprotein which has an important role in cell-cell adhesion, as well as in cell signal transmission, in u regulation of gen expression and in interaction with axin and APC (adenomatous poliposis coli). Its oncogenic role in several types of carcinomas in human population is well known. It is very likely that beta-catenin as an protooncogen plays an important role in genesis of Wilms tumor. It is well known that in 15% Wilms tumors there are beta-catenin mutations, which indicates that there is a disorder in Wnt signal path that plays an important role in Wilms tumor genesis. The aim of our study was to investigate b-catenin expression in Wilms tumor, to compare it with the expression in normal renal tissue as well as to see if there is a positive correlation between b-catenin expression in Wilms tumor with tumor stage, histologic type and/or prognostic group.