Browsing by Author "Berikkhanova, K."
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Item Open Access Erythrocyte ghosts` influence on the phenotypic plasticity of macrophage(2016-05) Khassenbekova, Zh.; Berikkhanova, K.; Gulyayev, A.; Sergazy, Sh.; Yermekbayeva, В.; Kushugulova, A.R.; Omarova, D.; Akhmetova, A.; Nurgozhin, T.; Zhumadilov, Zh.Correction of phenotypic plasticity of macrophages for reprogramming inflammatory response is of great interest to modern medicine. To date, there are lots of factors, which can alter macrophages' phenotype to M1 or M2. The introduction of drug containing autologous erythrocyte ghosts is one of such factors. We have developed a method for the targeted delivery of autologous erythrocyte ghosts loaded with antibiotic (pharmacocytes) directly into the wound tissues. Introduction of pharmacocytes to the purulent wound ensures high therapeutic concentrations of the antibiotic, which leads to rapid arresting of the phase of the inflammatory process and thus results in early healing. In order to explain this phenomenon, we investigated the effect of the pharmacocytes on the phenotypic polarization of macrophages.Item Open Access Genetic, social, and behavioral risk factors for tuberculosis: preliminary results from a matched case-control study in Kazakhstan(Nazarbayev University, 2013) Zhumadilov, Zh.; Issayeva, R.; Berikkhanova, K.; Terlikbayeva, A.; Darisheva, M.; Amirov, B.; Rakhimova, S.; Akilzhanova, A.We designed a case-control study to examine demographic, clinical, social and cultural factors associated with tuberculosis in four regions of Kazakhstan. Cases included persons identified by the national tuberculosis program as having primary pulmonary tuberculosis, and controls were healthy household members and randomly selected community residents.Item Open Access Investigating the Suitability of Mare’s Milk-Derived Exosomes as Potential Drug Carriers.(MDPI, 2024) Sergazy, S.; Zhetkenev, S; Shulgau, Z.; Chulenbayeva, L.; Kamyshanskiy, Y.; Nurgaziyev, M.; Nurgozhina, A.; Mukhanbetzhanova, Z.; Berikkhanova, K.; Gulyayev, A.; Aljofan M.Exosomes are cell-derived, membrane-surrounded particles that deliver bioactive molecules to various cells. Due to their small size, low immunogenicity, extended blood circulation, and involvement in cellular communication, they hold potential as effective drug carriers. Exosomes are present in various biological fluids, including mare’s milk, a traditional drink in Central Asia. This study aims to compare exosome isolation methodologies and determine the stability of mare’s milk-derived exosomes as potential therapeutic carriers. Three extraction methods—immunoprecipitation, size exclusion chromatography, and total exosome isolation—were compared in terms of exosome characteristics, purity, and content. The isolated exosomes were then loaded with quercetin, and their ability to increase its bioavailability was tested in vitro and in vivo. Total exosome isolation was identified as the most efficient method for producing high-quality exosomes. These exosomes were loaded with quercetin and compared to free quercetin and exosomes alone. Exosomes loaded with 80 µM quercetin significantly restored β-galactosidase activity and cellular viability in doxorubicin-treated cells, exhibiting similar potency to 160 µM free quercetin. In aged model animals, treatment with quercetin-loaded exosomes resulted in significantly less acute and subacute damage to the myocardium, kidneys, and liver compared to untreated control animals. This study provides a proof-of-concept that mare’s milk-derived exosomes can be effectively absorbed by cells and animal tissues, supporting their potential use as drug carriers.Item Metadata only Pharmacokinetics of Ceftriaxone Included In Cellular Transport System(2015-08-01) Nurgozhin, T.; Gulyayev, A.; Lokhvytsky, S.; Yermekbayeva, B.; Sergazy, S.; Shulgau, Z.; Berikkhanova, K.; T., NurgozhinItem Metadata only Tuberculosis report among injection drug users and their partners in Kazakhstan(Public Health, 2015-05-01) Hermosilla, S.; El-Bassel, N.; Aifah, A.; Terlikbayeva, A.; Zhumadilov, Z.; Berikkhanova, K.; Darisheva, M.; Gilbert, L.; Schluger, N.; Galea, S.; S., HermosillaAbstract ObjectivesTuberculosis (TB) is a major threat to global public health. Kazakhstan has the second highest percentage of multidrug-resistant tuberculosis (MDR-TB) cases among incident tuberculosis cases in the world (WHO 2013). A high burden of MDR-TB suggests TB prevention, control, and treatment programs are failing. This study provides an epidemiologic profile of TB among injection drug users (IDUs), a high-risk and chronically underserved population, in Kazakhstan. Study designCross-sectional study. MethodsThe authors studied the characteristics and risk environment of IDUs with self-reported previous active TB and their primary sexual partners in Almaty, Kazakhstan. 728 individuals (364 couples) participated in a couple-based study in 2009. Results16.75% of participants reported at least one positive TB test (x-ray) in their lifetime. In a multivariable logistic regression adjusting for couple-based sampling, persons with positive TB test were significantly more likely to be older (odds ratio (OR) 7.26, 95% confidence interval (CI): 1.73, 30.43), male (OR 5.53, 95% CI: 2.74, 11.16), have a shorter duration of injection drug use (OR 0.17, 95% CI: 0.04, 0.65), have received high social support from their significant other (OR 2.13, 95% CI: 1.03, 4.40) and more likely (non-significantly) to have been incarcerated (OR 7.03, 95% CI: 0.64, 77.30). ConclusionsOlder men with a history of incarceration and recent injection drug use were more likely to have positive TB test in Kazakhstan. Social network support, while potentially positive for many aspects of population health, may increase risk of TB among IDUs in this context. Public health policies that target high-risk populations and their at-risk networks may be necessary to stem the rise of MDR-TB in Central Asia.