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Showing 1 to 12 of 13 entries
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Cell biology is different in small volumes: endogenous signals shape phenotype of primary hepatocytes cultured in microfluidic channels.

Scientific reports

Haque A, Gheibi P, Gao Y, Foster E, Son KJ, You J, Stybayeva G, Patel D, Revzin A.
PMID: 27681582
Sci Rep. 2016 Sep 29;6:33980. doi: 10.1038/srep33980.

The approaches for maintaining hepatocytes in vitro are aimed at recapitulating aspects of the native liver microenvironment through the use of co-cultures, surface coatings and 3D spheroids. This study highlights the effects of spatial confinement-a less studied component of...

Reconfigurable microfluidic device with integrated antibody arrays for capture, multiplexed stimulation, and cytokine profiling of human monocytes.

Biomicrofluidics

Vu T, Rahimian A, Stybayeva G, Gao Y, Kwa T, Van de Water J, Revzin A.
PMID: 26339315
Biomicrofluidics. 2015 Aug 06;9(4):044115. doi: 10.1063/1.4928128. eCollection 2015 Jul.

Monocytes represent a class of immune cells that play a key role in the innate and adaptive immune response against infections. One mechanism employed by monocytes for sensing foreign antigens is via toll-like receptors (TLRs)-transmembrane proteins that distinguish classes...

Reconfigurable microfluidics combined with antibody microarrays for enhanced detection of T-cell secreted cytokines.

Biomicrofluidics

Chen A, Vu T, Stybayeva G, Pan T, Revzin A.
PMID: 24404010
Biomicrofluidics. 2013 Mar 14;7(2):24105. doi: 10.1063/1.4795423. eCollection 2013.

Cytokines are small proteins secreted by leukocytes in blood in response to infections, thus offering valuable diagnostic information. Given that the same cytokines may be produced by different leukocyte subsets in blood, it is beneficial to connect production of...

Microfluidic Fabrication of Core-Shell Microcapsules carrying Human Pluripotent Stem Cell Spheroids.

Journal of visualized experiments : JoVE

Gwon K, Hong HJ, Gonzalez-Suarez AM, Stybayeva G, Revzin A.
PMID: 34723935
J Vis Exp. 2021 Oct 13;(176). doi: 10.3791/62944.

Three-dimensional (3D) or spheroid cultures of human pluripotent stem cells (hPSCs) offer the benefits of improved differentiation outcomes and scalability. In this paper, we describe a strategy for the robust and reproducible formation of hPSC spheroids where a co-axial...

Nanoparticle-Enabled Multiplexed Electrochemical Immunoassay for Detection of Surface Proteins on Extracellular Vesicles.

ACS applied materials & interfaces

Lee S, Crulhas BP, Suvakov S, Verkhoturov SV, Verkhoturov DS, Eller MJ, Malhi H, Garovic VD, Schweikert EA, Stybayeva G, Revzin A.
PMID: 34709783
ACS Appl Mater Interfaces. 2021 Oct 28; doi: 10.1021/acsami.1c14506. Epub 2021 Oct 28.

Extracellular vesicles (EVs) are lipid bilayer particles secreted from various cells. EVs carry molecular information of parent cells and hold considerable promise for early disease diagnostics. This paper describes a general strategy for multiplexed immunosensing of EV surface proteins,...

Study of the Basic Labor Activity of a General Practitioner Using the Time-Keeping Method on the Example of Polyclinics of the City of Karaganda, Kazakhstan.

Indian journal of occupational and environmental medicine

Mergentay A, Kulov DB, Koikov VV, Omarkulov BK, Sergaliev TS, Imanbayeva G, Stabayeva L.
PMID: 34421238
Indian J Occup Environ Med. 2021 Apr-Jun;25(2):60-62. doi: 10.4103/ijoem.IJOEM_18_20. Epub 2021 Jul 09.

OBJECTIVE: To study and analyze the working time distribution of general practitioners at the outpatient appointment in polyclinics of Karaganda, Kazakhstan.MATERIALS AND METHODS: The time spent by the general practitioner on all activities was studied by the timing method.RESULTS:...

Clinic - Morphologic and Morphometric Criteria for Differential Diagnosis of Sarcoidosis and Pulmonary Tuberculosis.

Open access Macedonian journal of medical sciences

Tussupbekova M, Bakenova R, Stabayeva L, Imanbayeva G, Nygyzbayeva R, Mussabekova S, Tayzhanova D.
PMID: 31198459
Open Access Maced J Med Sci. 2019 May 13;7(9):1480-1485. doi: 10.3889/oamjms.2019.315. eCollection 2019 May 15.

BACKGROUND: Currently incidence and prevalence of sarcoidosis are increasing. Sarcoidosis is a systemic granulomatous lung disease of unknown aetiology, which is characterised by the involvement of different organ systems, variable disease course affecting young people and possessing an important...

Prospects and Opportunities for Microsystems and Microfluidic Devices in the Field of Otorhinolaryngology.

Clinical and experimental otorhinolaryngology

Hwang SH, Gonzalez-Suarez AM, Stybayeva G, Revzin A.
PMID: 32772034
Clin Exp Otorhinolaryngol. 2021 Feb;14(1):29-42. doi: 10.21053/ceo.2020.00626. Epub 2020 Aug 11.

Microfluidic systems can be used to control picoliter to microliter volumes in ways not possible with other methods of fluid handling. In recent years, the field of microfluidics has grown rapidly, with microfluidic devices offering possibilities to impact biology...

A microfluidic platform for cultivating ovarian cancer spheroids and testing their responses to chemotherapies.

Microsystems & nanoengineering

Dadgar N, Gonzalez-Suarez AM, Fattahi P, Hou X, Weroha JS, Gaspar-Maia A, Stybayeva G, Revzin A.
PMID: 34567703
Microsyst Nanoeng. 2020 Oct 19;6:93. doi: 10.1038/s41378-020-00201-6. eCollection 2020.

There is increasing interest in utilizing in vitro cultures as patient avatars to develop personalized treatment for cancer. Typical cultures utilize Matrigel-coated plates and media to promote the proliferation of cancer cells as spheroids or tumor explants. However, standard...

Hepatocyte cultures: From collagen gel sandwiches to microfluidic devices with integrated biosensors.

APL bioengineering

de Hoyos-Vega JM, Hong HJ, Stybayeva G, Revzin A.
PMID: 34703968
APL Bioeng. 2021 Oct 14;5(4):041504. doi: 10.1063/5.0058798. eCollection 2021 Dec.

Hepatocytes are parenchymal cells of the liver responsible for drug detoxification, urea and bile production, serum protein synthesis, and glucose homeostasis. Hepatocytes are widely used for drug toxicity studies in bioartificial liver devices and for cell-based liver therapies. Because...

Predictive Value of Olfactory and Taste Symptoms in the Diagnosis of COVID-19: A Systematic Review and Meta-Analysis.

Clinical and experimental otorhinolaryngology

Kim DH, Kim SW, Stybayeva G, Lim SY, Hwang SH.
PMID: 33541033
Clin Exp Otorhinolaryngol. 2021 Aug;14(3):312-320. doi: 10.21053/ceo.2020.02369. Epub 2021 Jan 25.

OBJECTIVES: This study evaluated the diagnostic value of various symptoms of coronavirus disease 2019 (COVID-19) in screening for this disease.METHODS: Two authors (working independently) comprehensively reviewed six databases (PubMed, Cochrane Database, Embase, Web of Science, Scopus, and Google Scholar)...

Detecting cell-secreted growth factors in microfluidic devices using bead-based biosensors.

Microsystems & nanoengineering

Son KJ, Gheibi P, Stybayeva G, Rahimian A, Revzin A.
PMID: 29963323
Microsyst Nanoeng. 2017;3. doi: 10.1038/micronano.2017.25. Epub 2017 Jul 03.

Microfluidic systems provide an interesting alternative to standard macroscale cell cultures due to the decrease in the number of cells and reagents as well as the improved physiology of cells confined to small volumes. However, the tools available for...

Showing 1 to 12 of 13 entries