73 research outputs found

    Különböző adalékok hatása az ellentétes töltésű polielektrolitok és tenzidek asszociációjára

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    Munkánk elsődleges célja az elektrolit ellentmondásos hatásának vizsgálata, értelmezése volt. Kutatásaink során polikation/anionos tenzid (PEI-NaDS) és polianion/kationos tenzid (PSS-DTAB, PSS-CTAB) elegyekkel foglalkoztunk. Az elektrolit egyik hatása akkor észlelhető, ha a polielektrolit-tenzid asszociátumok elkészítése során elektrosztatikusan stabilizált kolloid diszperzió képződik. Kis elektrolit koncentráció értékek esetén az elektrolit a diszperzió kinetikai stabilitását csökkenti. PEINaDS és PSS-CTAB elegyei esetén polielektrolit feleslegben egy szűk, és tenzidfeleslegben széles koncentráció tartományban keletkezik kinetikailag stabil kolloid diszperzió. Ugyanakkor PSS és DTAB elegyeinél nem sikerült tenzidfeleslegben kolloid diszperziót létrehozni. Az elektrolit másik hatása akkor figyelhető meg, ha a P/T elegyhez hozzáadott elektrolit jelentősen csökkenti a kötött tenzid mennyiségét, ugyanakkor a tenzid oldhatósága elegendően nagy marad az elektrolitoldatban. Nagy NaCl koncentráció esetén az elektrolit az egyensúlyi fázistulajdonságokra hat: nem történik asszociatív fázisszeparáció. Ezt a hatást észleltük PSS és alkil-trimetilammónium bromidok (DTAB, CTAB) elegyeiben – bizonyos sókoncentráció felett a teljes tenzidkoncentráció tartományban transzparens oldatokat kaptunk. Megállapítható, hogy az elektrolit kettős hatással bír az ellentétes töltésű polielektrolit-tenzid rendszerekre, annak minőségétől függ, hogy az elektrolit egyik, másik, vagy akár mindkét hatását látjuk. Ezek az eredmények érdekes felhasználást nyerhetnek a jövőben. Például polielektrolittenzid aggregátumok elektrosztatikusan stabilizált kolloid diszperziója lehetőséget teremt arra, hogy a részecskék hidrofób belsejükben apoláris anyagot raktározzanak, ami az elektrolit koncentráció hirtelen megemelésével felszabadítható. Más lehetőség lehet, hogy P/T nanorészecskékből álló felületi réteg létrehozásával a felület hidrofóbicitása hangolható a közeg ionerősségének változtatásával. A PEI-NaDS-PEO rendszerrel ellentétben a PSS-CTAB-Pluronic rendszerekben nem tapasztalható a semleges polimer oly mértékű adszorpciója a P/T nanorészecskék felszínére, ami sztérikus stabilizálást biztosítana a PSS-CTAB nanorészecskék kolloid diszperziójának. Az eddigi eredmények azonban nem nyújtanak elegendő információt a polimeradalék hatásáról a polielektrolit-tenzid asszociációra, ezért további vizsgálatok szükségesek

    A CASE OF EPSTEIN-BARR VIRAL INFECTION PROCEEDED UNDER THE MASK OF THE SYSTEMIC VARIANT OF THE JUVENILE RHEUMATOID ARTHRITIS

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    The article describes the treatment of Epstein–Barr viral infection under the mask of the systemic variant of the juvenile rheumatoid arthritis. The clinical presentations of the disease included fever, rash, lymphadenopathy, hepatomegaly, polyarticular syndrome and high lab activity indices. the serologic research uncovered the antibodies to the Epstein–Barr virus in diagnostic titers, which allowed the researchers to verify the diagnosis. A child underwent the treatment with the immunoglobulin of a man with the high concentration of antibodies to cytomegalovirus, which induced the remission of the systemic representations, articular syndrome accompanied B normalization of the lab activity indices and reduction of the antibody titers towards the Epstein–Barr virus.Key words: children, treatment, immune globulin intravenous, septic syndrome, epstein–barr virus.</strong

    The impact of disease and antirheumatic therapy factors on growth retardation in children suffering from juvenile rheumatoid arthritis

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    THE STUDY EVALUATED THE IMPACT OF REFRACTORY JUVENILE IDIOPATHIC ARTHRITIS (JIA) AND INTERFERENCE OF ANTIRHEUMATIC THERAPY ON PHYSICAL STATURE AND GROWTH AND PHYSICAL DEVELOPMENT IN CHILDREN. WE OBSERVED 133 PATIENTS WITH JIA WITH AGE FROM 4.6 TO 18 YEARS. WE ASSESSED PATIENTS' PHYSICAL STATURE (DOCUMENTING HEIGHT AND WEIGHT) AND FURTHER GROWTH AND DEVELOPMENT STARING FROM BIRTH, BEFORE THE ONSET OF JIA, AT THE FIRST YEAR FROM THE ONSET OF THE DISB EASE AND LATER ON. PHYSICAL RETARDATION WAS MARKED IN ALL CHILDREN IN THE FIRST YEAR FROM THE ONSET OF JIA. SYSTEMIC JIA, WHICH IS KNOWN FOR HIGH ACTIVITY AND POLYARTICULAR OR GENERALIZED JOINT LESION, WAS LINKED TO SIGNIFICANT PHYSICAL RETARDATION IN ALL CHILDREN WITH SYSBTEMIC JIA. LONGBTERM GLUCOCORTICOID ADMINISTRATION, EVEN AT LOW DOSES, ACCENTUATED THE NEGATIVE IMPACT OF JIA ON GROWTH RESULTING IN MARKED GROWTH DELAY OR ITS' TOTAL ARREST. WE HAVE ELABORATED RISK FACTORS FOR SHORT STATURE IN CHILDREN WITH JIA, WHICH SUGGEST THERAPY GUIDELINES, PRESENTED IN THIS ARTICLE.KEY WORDS: JUVENILE IDIOPATHIC ARTHRITIS, СHILDREN.</p

    ABATACEPT — NEW OPPORTUNITIES IN TREATMENT OF JUVENILE IDIOPATHIC ARTHRITIS

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    The article presents mechanism of action of abatacept, literature data on clinical studies of its effectiveness in adults with rheumatoid arthritis, and results of clinical randomized double-blinded placebo-controlled study of abatacept effectiveness in treatment of different types of juvenile idiopathic arthritis. The analysis of literature data showed that abatacept is new perspective medication for the treatment of rheumatoid arthritis in adults and children.Key words: children, rheumatoid arthritis, abatacept, treatment.(Voprosy sovremennoi pediatrii — Current Pediatrics. 2009;8(4):84-89

    ASSESSMENT OF «BIFIFORM» EFFICACY IN PATIENTS WITH JUVENILE ARTHRITIS TREATED WITH ANTIBIOTICS

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    Activity of probiotic medication «Bifiform» in children with juvenile arthritis treated with antibiotics is described in this article. Prophylactic application of prebiotic before beginning of antibacterial treatment in base group of patients allows avoiding antibiotic associated diarrhea. «Bifiform» stops diarrhea and other dyspeptic events in patients treated with antibiotics with manifestations of dyspepsia on average in 3 days of therapy. It's recommended to use «Bifiform» in patients with juvenile arthritis treated with wide spectrum antibiotics to prevent dyspepsia.Key words: children, juvenile arthritis, antibacterial treatment, probiotics

    ASPECTS OF TREATMENT OF JUVENILE ARTHRITIS WITH SOLUBLE RECEPTORS TO TNF

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    The theme of review is the results of treatment of rheumatic diseases in adults and children with blocker of TNF-α etanercept. The data from single, open-labeled and multicenter double blinded placebo-controlled studies of activity and safety of etanercept is presented in this article. The results of researches show high efficacy of etanercept in treatment of rheumatoid arthritis and ankylosing spondylitis in children and adults. Besides high activity etanercept is one of the safest blockers of TNF-α in pediatric and adult practice.Key words: children, juvenile rheumatoid arthritis, treatment, etanercept

    ESOMEPRAZOLE EFFICACY IN TREATMENT OF THE INFLAMMATORY DISEASES OF THE UPPER GASTROINTESTINAL TRACT AMONG CHILDREN, SUFFERING FROM RHEUMATIC DISEASES

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    The article deals with the findings of the endoscopic examination and treatment of 80 children, suffering from rheumatic diseases. According to the esophago gastroduodenoscopy data, all the patients turned up to have inflammatory changes in the upper gastrointestinal tract of various degrees of manifestation. Moreover, only 36% of patients complained about pain in the stomach. The application of esomeprazole in the complex therapy contributed to the epithelization of erosive and ulcerous defects and dyspepsia syndrome relief among the majority of the patients. The effects of the complex therapy with esomeprazole were appraised as good among 90% of children and excellent among 9% of patients.Key words: children, rheumatic diseases, esomeprazole, gastrointestinal tract pathology.</strong

    EXPERIENCE OF SEVERE SYSTEM TYPE OF JUVENILE RHEUMATOID ARTHRITIS TREATMENT WITH CYCLOSPORINE IN COMBINATION WITH DIFFERENT METHOTREXATE REGIMEN

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    The article presents the case report of early debut and severe course of system type of juvenile rheumatoid arthritis, refractory to methotrexate and blockers of tumor necrotizing factor _ monotherapy. Successful treatment with cyclosporine in daily dose 4.4 mg/kg of body weight combined with different regimen of methotrexate was described. Combined treatment with cyclosporine in daily dose 4.4 mg/kg of body weight and methotrexate in dose 15 mg/m2 of body surface once weekly intramuscularly and 50 mg/m2 of body surface once weekly intravenously during 8 weeks with further dose decrease to 25 mg/m2 of body surface intramuscularly induced remission development in 2–6 months, provided restoration of joints function, increased quality of life. Cyclosporine combined with pulse-therapy with methotrexate in more early stages stopped extra articulate signs of disease and reduced acute inflammatory joint’s lesions.Key words: children, juvenile rheumatoid arthritis, cyclosporine, methotrexate.(Voprosy sovremennoi pediatrii — Current Pediatrics. 2009;8(4):142-150
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