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  • Author: Marijana Stanojević Pirković x
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Ruthenium(II) Complexes as Potential Apoptosis Inducers in Cancer Therapy

Abstract

The compound cis-diamminedichloroplatinum(II) (cisplatin) is the most widely used anticancer drug, but due to its serious side effects (including gastrointestinal symptoms, renal tubular injury, neuromuscular complications, and ototoxicity), clinical applications of cisplatin are limited. Therefore, these limitations have provided an encouragement for further research into other transition metal complexes, with an aim to overcome the disadvantages related with cisplatin therapy. In the search for effective complexes that can be targeted against tumor cells, many research groups synthesized various ruthenium( II) complexes with different ligands. Also, newly synthesized ruthenium(II) complexes showed selective anticancer activity against different types of cancer cells. Activity of ruthenium(II) complexes in some cases was even higher than that of cisplatin against the same cells. Precise mechanism of action of ruthenium(II) complexes is not fully understood. The different examples mentioned in this review showed that ruthenium(II) complexes decreased viability of cancer cells by induction of apoptosis and/or by cell cycle arrest which implies their different mechanism of action against different types of cancer cells.

Open access
Influence of Dialysis Modality on the Treatment of Anemia in Patients with End-stage Kidney Disease

Abstract

Anemia is a common complication among the patients with end-stage kidney disease. Management of anemia is influenced by several factors: iron deficiency, subtherapeutic dosage of erythropoietin, microinflammation, vitamin D deficiency, increased iPTH levels and inadequate hemodialysis. The aim of the study was to examine impact of dialysis modality on blood hemoglobin level as well as status of iron, status of vitamin D, hemodialysis adequacy and erythropoietin dose. The study included 120 patients which were divided into two groups: the group of patients treated with hemodiafiltration and the group of patients treated with standard hemodialysis. For statistical analysis Kolmogorov-Smirnov test, Student’s t-test and Mann-Whitney U-test were used. Blood hemoglobin level and parameters of hemodialysis adequacy (Kt/V index, spKt/V index, URR index), hematocrit ad protein catabolic rate (nPCR) were statisticaly significant lower in patients treated with regular hemodialysis compared to patients treated with regular hemodiafiltration. Serum ferritin level, C-reactive protein level and average monthly dose of intravenous iron were higher in the patients treated with regular hemodialysis compared to patients treated with hemodiafiltration. Patients treated with hemodiafiltration have lower grade of microinflammation, better iron status and better control of anemia compared to the patients treated with regular hemodialysis. Dialysis modality is an important factor that influences management of anemia in the patients with end-stage kidney disease.

Open access
Life-Threatening Plasmodium Falciparum Malaria in Patient after Visiting Angola-Case Report

Abstract

Malaria is a potentially life-threatening disease, especially when complicated by a septic shock. It is caused by infection of erythrocytes with protozoan parasites of the genus Plasmodium that are inoculated into the humans by a feeding female anopheline mosquito. Of the four Plasmodia species, infection with Plasmodium (P.) falciparum is often associated with different types of complications and significant mortality. Most imported cases of malaria are not in tourists but in immigrants and their children who have returned to the country of their family’s origin to visit friends and relatives (so-called VFR travelers) and have forgone chemoprophylaxis.

We described a case of a 52 year old patient who came from Angola, an African country with endemic malaria before the occurrence of the first symptoms of the disease. The first symptoms were not recognized by the presence of nonspecific symptoms. Very soon the patient was gone under the hemodynamic unstability that eas followed by shock and high percentage parasitemia of 25%. A global health disorder was developed accompanied with hemodynamic instability and cerebral dysfunction. He performs pulmonary ventilation disorder and renal failure. Only data from social epidemiological survey of travel to the African country, was sufficient to cast doubt on malaria. The diagnosis was conducted using the standard method - peripheral blood smear. After turning antimalarial drugs, improvement of health status with complete recovery within 10 days was noticed. The only consequence of the disease is persistent hypertension that is sensitive to standard antihypertensive therapy.

Open access