Dilnoza Ismailova

Mrs. Dilnoza Ismailova

orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 March 2026 in Biomedical and Pharmacology Journal
Verified
Journal Article
Open access
ZSZafar Isomiddinovich Sanoev
Zafar Isomiddinovich Sanoev
SRSokhib Zamon Ogli Rashidov
Sokhib Zamon Ogli Rashidov
TKTolmas Tolibovich Khamroev
Tolmas Tolibovich Khamroev
IAIbrokhimjon Tuychievich Abdinazarov
Ibrokhimjon Tuychievich Abdinazarov
SRSukhrob Davlatyor Ogli Rakhimboev
Sukhrob Davlatyor Ogli Rakhimboev
MSMadina Aladdin Kizi Shakhmurova
Madina Aladdin Kizi Shakhmurova
Many psychiatrists have consistently pointed out the link between stressors and the emergence of depressed moods. Both acute traumatic experiences and long-term psychogenic stress can contribute to the development of depressive disorders in people. The aim of this research is to develop a novel antidepressant medication based on compound-1, 5-(2-aminophenyl)-1,3,4-oxadiazole-2-(3H)-thione. The reference medication fluoxetine and 5-(2-aminophenyl)-1,3,4-oksadiazole-2(3H)-thione (compound 1) were the subjects of the investigation. Their effects were evaluated using models such as the FST and TST, which measure behavioral despair and immobility in response to stress. Other factors that were assessed included acute toxicity, locomotor activity, research activities, anti-anxiety activity, and the spectrum of antidepressant action. In all studies, chemical 1 was administered orally at dosages of 0.1, 0.5, 1.0, 5.0, 10.0, 30.0, and 60.0 mg/kg. Experiments conducted on models of stress-induced depression revealed that compound-1 has a strong antidepressant effect when given once to mice (male and female). Under compound-1's influence, the animals' total immobilization time decreased and the latency period before the onset of immobility increased statistically substantially in the "non-escapable forced Porsolt swimming" and "hanging mice by the tail" tests. Under the effect of the test drug, the number of jumps made by the animals and the total amount of time spent actively swimming increased statistically considerably in the "non-escapable forced swimming, but Porsolt" test. The uniqueness and benefits of compound-1 as a possible antidepressant medication have therefore been demonstrated by neuro- and psychopharmacological research comparing it to the well-known antidepressant fluoxetine.

30 June 2021 in Siberian Journal of Life Sciences and Agriculture
Verified
Journal Article
Open access
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STSaida M. Turayeva
Saida M. Turayeva
DIDilnoza Ismailova
Dilnoza Ismailova
SMSaida Kh. Muratova
Saida Kh. Muratova
SASitorabonu B. Allokulova
Sitorabonu B. Allokulova
Цель. Изучение инсектицидной активности производных 1,3,4-оксадиазолов в отношении сокососущих вредителей садовых культур (Aphis pomi) и декоративных растений (Macrosiphum rosae). Методы и материалы исследования. Материалами для исследований послужили алкилпроизводные 5-(п-Аминофенил)-1,3,4-оксадиазол-2-тиона, формулы которых приведены в тексте статьи, взрослые особи яблоневой тли (Aphis pomi) и розовой тли (Macrosiphum rosae). Методы исследования: первичный скрининг инсектицидной активности изучали методом инкубации в чашках Петри взрослых особей насекомых-вредителей. Насекомых подвергали действию веществ в течение 24 часов. Результаты. Сокососущий вредитель – тля наносит значительный вред растениям, распространяя различные вирусы, поражающие сельскохозяйственные культуры. Для борьбы с сокососущими вредителями необходимы средства химической защиты растений с малой токсичностью для окружающей среды. По результатам скрининга доказано, что биологическая эффективность веществ 2-гексилтио-5-(п-Аминофенил)-1,3,4-оксадиазола (1), 2-октилтио-5-(п-Аминофенил)-1,3,4-оксадиазола (3) и 2-нонилтио-5-(п-Аминофенил)-1,3,4-оксадиазол (4) составляла 98.0%, 97.0% и 99.5% в отношении особи M. rosae. Под воздействием 2-гексилтио-5-(п-Аминофенил)-1,3,4-оксадиазола (1), 2-октилтио-5-(п-Аминофенил)-1,3,4-оксадиазола (3) и 2-нонилтио­-5-(п-Аминофенил)-1,3,4-оксадиазола (4) в дозе 5.0 мг/мл смертность особейA. pomi достигла 99.0%, 83.0% и 90.0%, соответственно. Впервые изучена летальная концентрация (LC50) 2-гексилтио-5-(п-Аминофенил)-1,3,4-оксадиазола (1), 2-гептилтио-5-(п-Аминофенил)-1,3,4-оксадиазола (2), 2-октилтио-5-(п-Аминофенил)-1,3,4-оксадиазола (3), 2-нонилтио-5-(п-Аминофенил)-1,3,4-оксадиазола (4) при контактном действии с насекомым. Заключение. Таким образом, поиск и создание инсектицидов низкой токсичности для окружающей среды, предотвращающие возникновение резистентности на основе алкилпроизводных 5-(п-Аминофенил)-1,3,4-оксадиазол-2-тиона в защите растений является актуальным направлениям. Исследование показало, что 2-гексилтио-5-(п-Аминофенил)-1,3,4-оксадиазол (1), 2-октилтио-5-(п-Аминофенил)-1,3,4-оксадиазол (3) и 2-нонилтио-5-(п-Аминофенил)-1,3,4 оксадиазол (4) в концентрации 0.5 мг/мл сильно токсичны для особей M. rosae и A. pomi. Работа по использованию алкилпроизводных 5-(п-Аминофенил)-1,3,4-оксадиазол-2-тионов в качестве сельскохозяйственных средств защиты будут продолжены.

25 July 2026 in Chemosensors
Verified
Journal Article
Open access
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NQNigora Xakimovna Qutlimurotova
Nigora Xakimovna Qutlimurotova
DADilsora O'tkir qizi Axmadova
Dilsora O'tkir qizi Axmadova
DIDilnoza Ismailova
Dilnoza Ismailova
JTJasur Tursunqulov
Jasur Tursunqulov
RQRukhiya Qutlimurotova
Rukhiya Qutlimurotova
NANargiza Atakulova
Nargiza Atakulova
A simple and cost-effective graphite paste electrode modified with 5-(4-aminophenyl)-4-amino-1,2,4-triazole-3(2H)-thione was developed for the selective voltammetric determination of Cu(II) ions in environmental water samples. The N,S-donor ligand was incorporated into a graphite–polystyrene matrix without the use of nanomaterials, providing a reproducible and straightforward electrode fabrication route. Scanning electron microscopy revealed a rough, porous surface morphology with an enhanced electroactive surface area of 0.065 cm2, approximately twice the geometric area. Electrochemical impedance spectroscopy confirmed diffusion-controlled mass transport, while cyclic voltammetry indicated quasi-reversible behaviour of the Cu(II)/Cu(0) redox system with a linear dependence of peak current on the square root of the scan rate. Differential pulse voltammetry under optimised conditions (0.1 mol·L−1 H2SO4, pH 1.0–1.2) yielded a linear analytical response over the concentration range of 0.01–0.4 μmol·L−1 (R2 = 0.99507), with a limit of detection of 0.02 μmol·L−1 and a limit of quantification of 0.06 μmol·L−1—well below the WHO guideline for copper in drinking water. The sensing mechanism involves selective N,S-bidentate coordination of Cu(II) at the electrode surface, followed by electrochemical reduction, as supported by FT-IR spectroscopic evidence. The sensor demonstrated good selectivity toward Cu(II) in the presence of common interfering metal ions at up to 20-fold excess. The method was successfully validated against ICP-OES (recovery 99.8%, RSD < 0.33%) and confirmed by spike–recovery experiments (99.0–99.5%), confirming its practical applicability for trace-level environmental monitoring. The modified electrode retained approximately 93% of its initial response after 30 consecutive measurements and 91% after 14 days of storage, demonstrating good operational stability.