Search results for: Dejan Nikolic

Items from 1 to 20 out of 72 results

article

Development of the Melanoma Concerns Questionnaire (MCQ‐28); refinement of the EORTC QLQ‐MEL38 module

Julie Winstanley, Edward White, Robyn Saw, Teresa Young, more

Objective Few patient‐reported outcome measures (PROMs) have been developed that adequately measure the patient‐experience following diagnosis and treatment of melanoma. Building on previous research, which developed the European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life Module (QLQ‐MEL38), the aim of this study was to further test the hypothesised domain structure...

article

Chemical Analysis of Selected Seaweeds and Seagrass from the Adriatic Coast of Montenegro

Sanja Milović, Ivan Stanković, Dejan Nikolić, Jelena Radović, more

Chemistry & Biodiversity > 16 > 10 > n/a - n/a

Three seaweeds (Halimeda tuna, Codium bursa and Cystoseira barbata) and one seagrass (Cymodocea nodosa) were collected from the Coast of Montenegro, Gulf of Boka Kotorska and their chemical analysis was performed. In seagrass C. nodosa, three phenolic compounds were identified (diosmetin 7‐sulfate, caftaric and coutaric acid). The content of β‐glucan, fatty acids, sterols and micro‐ and macro‐elements...

article

Sesquiterpene lactones from the methanol extracts of twenty-eight Hieracium species from the Balkan Peninsula and their chemosystematic significance

Violeta Milutinović, Marjan Niketić, Aleksej Krunić, Dejan Nikolić, more

Phytochemistry > 2018 > 154 > C > 19-30

Four sesquiterpene lactones (SLs), including three undescribed proline-SL conjugates, the guaianolides calophyllamine A and 8-epiixerisamine A, and the eudesmanolide calophyllamine B, were isolated from the methanol extract of Hieracium calophyllum R. Uechtr. (Compositae) flowering heads. Another known guaianolide, crepiside E, was detected in Hieracium L. species for the first time. Their structures...

article

Heterogeneity of tumor cells and metastases in breast cancer patients: cause or consequence?

Darko Zdravkovic, Dejan Nikolic, Marija Zdravkovic

Breast Cancer Research and Treatment > 2018 > 172 > 1 > 241-241

article

Breast cancer and its impact in male transsexuals

Dejan Nikolić, Miroslav Granić, Nebojša Ivanović, Darko Zdravković, more

Breast Cancer Research and Treatment > 2018 > 171 > 3 > 565-569

Introduction Lesbian, gay, and bisexuals have unique healthcare needs. Breast cancer is leading cancer in women, worldwide, accounting for 25% of all cases. Annual incidence rates increased significantly in all countries and age groups. The occurrence of breast cancer is rare in transgender population. As they have very limited access to medical care, it is much less likely to pursue breast cancer...

article

Methanol Extracts of 28 Hieracium Species from the Balkan Peninsula – Comparative LC–MS Analysis, Chemosystematic Evaluation of their Flavonoid and Phenolic Acid Profiles and Antioxidant Potentials

Violeta Milutinović, Marjan Niketić, Ljuboš Ušjak, Dejan Nikolić, more

Phytochemical Analysis > 29 > 1 > 30 - 47

Introduction Hieracium s. str. represents one of the largest and most complex genera of flowering plants. As molecular genetics seems unlikely to disentangle intricate relationships within this reticulate species complex, analysis of flavonoids and phenolic acids, known as good chemosystematic markers, promise to be more reliable. Data about pharmacological activity of Hieracium species are scarce...

article

Cytochrome P450 inhibition by three licorice species and fourteen licorice constituents

Guannan Li, Charlotte Simmler, Luying Chen, Dejan Nikolic, more

European Journal of Pharmaceutical Sciences > 2017 > 109 > C > 182-190

The potential of licorice dietary supplements to interact with drug metabolism was evaluated by testing extracts of three botanically identified licorice species (Glycyrrhiza glabra L., Glycyrrhiza uralensis Fish. ex DC. and Glycyrrhiza inflata Batalin) and 14 isolated licorice compounds for inhibition of 9 cytochrome P450 enzymes using a UHPLC-MS/MS cocktail assay. G. glabra showed moderate inhibitory...

article

Relationship between fear of falling and functional status in nursing home residents aged older than 65 years

Mirjana Kocic, Zorica Stojanovic, Milica Lazovic, Dejan Nikolic, more

Geriatrics & Gerontology International > 17 > 10 > 1470 - 1476

Aim The present study investigated the relationship between fear of falling and functional status, and sociodemographic and health‐related factors in nursing home residents aged older than 65 years. Methods The cross‐sectional study involved 100 participants who were residents of a nursing home and aged older than 65 years. Fear of falling was assessed using the Falls Efficacy Scale. Functional...

article

Hepatic metabolism of licochalcone A, a potential chemopreventive chalcone from licorice (Glycyrrhiza inflata), determined using liquid chromatography-tandem mass spectrometry

Lingyi Huang, Dejan Nikolic, Richard B. Breemen

Analytical and Bioanalytical Chemistry > 2017 > 409 > 30 > 6937-6948

The metabolism of the chemoprevention agent licochalcone A, which is a chemopreventive chalcone found in abundance in the licorice species Glycyrrhiza inflata, was investigated using human liver microsomes and human hepatocytes combined with analysis using high performance liquid chromatography-mass spectrometry (LC-MS). Five oxygenated phase I metabolites of licochalcone A were formed by human liver...

article

Evaluation of estrogenic potency of a standardized hops extract on mammary gland biology and on MNU-induced mammary tumor growth in rats

Annekathrin M. Keiler, Dana Macejova, Birgit M. Dietz, Judy L. Bolton, more

The Journal of Steroid Biochemistry and Molecular Biology > 2017 > 174 > C > 234-241

Supplements with estrogenic activities are intensively investigated as potential alternatives for the treatment of menopausal symptoms. These investigations include studies on their safety regarding potential breast cancer risks. Therefore, the aim of this study was to assess whether or not a standardized hops (Humulus lupulus) extract, containing 0.42% of the estrogenic flavanone, 8-prenylnaringenin,...

article

A standardized Humulus lupulus (L.) ethanol extract partially prevents ovariectomy-induced bone loss in the rat without induction of adverse effects in the uterus

Annekathrin M. Keiler, Janina Helle, Manuela I. Bader, Tino Ehrhardt, more

Phytomedicine > 2017 > 34 > C > 50-58

Hops (Humulus lupulus (L.)) dietary supplements are of interest as herbal remedies to alleviate menopausal symptoms, such as hot flushes, depression and anxiety. So far, the evidence regarding estrogenic and related properties of hops preparations has been considered insufficient for a market authorization for menopausal indications.The study aims to investigate a chemically standardized hops extract...

article

Isolation and structural characterization of dihydrobenzofuran congeners of licochalcone A

Charlotte Simmler, David C. Lankin, Dejan Nikolić, Richard B. van Breemen, more

Fitoterapia > 2017 > 121 > C > 6-15

In an effort to explore the residual complexity of naturally occurring chalcones from the roots of Glycyrrhiza inflata (Fabaceae), two new licochalcone A (LicA) derivatives were isolated as trace metabolites from enriched fractions. Both constituents contain a dihydrofuran moiety linked to carbons C-4 and C-5 of the retrochalcone core. Compound 1 (LicAF1) represents a new chemical entity, whereas...

article

CASMI 2016: A manual approach for dereplication of natural products using tandem mass spectrometry

Dejan Nikolić

Phytochemistry Letters > 2017 > 21 > C > 292-296

The Critical Assessment of Small Molecule Identification (CASMI) contest is an initiative designed as an unbiased test of manual and automated strategies for the identification of small molecules from raw mass spectrometric data. In this contest, the participants are provided a set of high resolution MS and MS/MS data and asked to identify the unknown structure. CASMI 2016 is the fourth round of this...

article

Collision‐induced dissociation of phenethylamides: role of ion‐neutral complexes

Dejan Nikolić, Carmen Macias, David C. Lankin, Richard B. Breemen

Rapid Communications in Mass Spectrometry > 31 > 17 > 1385 - 1395

Rationale Phenethylamides are a large group of naturally occurring molecules found both in the plant and animal kingdoms. In addition, they are used as intermediates for the synthesis of pharmaceutically important dihydro‐ and tetrahydroisoquinolines. To enable efficient characterization of this class of molecules, a detailed mass spectrometric fragmentation study of a broad series of analogs was...

chapter

An implementation of tracking algorithm for over-the-horizon surface wave radar

Nikola Stojkovic, Dejan Nikolic, Bojan Dzolic, Nikola Tosic, more

2016 24th Telecommunications Forum (TELFOR) > 1 - 4

2016 24th Telecommunications Forum (TELFOR)

The aim of this paper is to present a development and an implementation of a tracking algorithm for Over-The-Horizon Radar (OTHR) with surface wave propagation. Proposed implementation utilizes standard tracking algorithm design for OTHR and introduces modifications of Joint Probability Data Association (JPDA) algorithm in order to simplify processing. To justify chosen approach, a simulated environment...

article

Antimicrobial and Cytotoxic Activity of Extracts of Ferula heuffelii Griseb. ex Heuff. and Its Metabolites

Ivan Pavlović, Silvana Petrović, Marina Milenković, Tatjana Stanojković, more

Chemistry & Biodiversity > 12 > 10 > 1585 - 1594

The antimicrobial and cytotoxic activities of isolates (CHCl₃ and MeOH extracts and selected metabolites) obtained from the underground parts of the Balkan endemic plant Ferula heuffeliiGriseb. ex Heuff. were assessed. The CHCl₃ and MeOH extracts exhibited moderate antimicrobial activity, being more pronounced against Gram‐positive than Gram‐negative bacteria, especially against Staphylococcus aureus...

chapter

Impact of radar cross section on HF radar survelance area: Simulation approach

Nikola Lekic, Dejan Nikolic, Bojan Milanovic, Dijana Vucicevic, more

2015 IEEE Radar Conference > 369 - 373

2015 IEEE Radar Conference

High frequency over the horizon radars (HF OTHR) shows great potential for over the horizon surveillance in Exclusive Economic Zones. When analyzing the possibilities of vessel detection it is necessary to know radar cross section. In this paper, the modeling of the vessel is accomplished by using the software for electromagnetic modeling WIPL-D. Usage of radar cross section diagram in HF OTHR simulator...

article

Metabolism of N_ω‐methylserotonin, a serotonergic constituent of black cohosh (Cimicifuga racemosa, L. (Nutt.)), by human liver microsomes

Dejan Nikolić, Jinghu Li, Richard B. Breemen

Biomedical Chromatography > 28 > 12 > 1647 - 1651

The roots/rhizomes of black cohosh (Cimicifuga racemosa L. (Nutt.) (syn. Actaea racemosa L.) are a popular dietary supplements among women for management of menopausal symptoms. Although not estrogenic, N_ω‐methylserotonin has been identified in black cohosh as a potent agonist of serotonin 5‐HT_1A and 5‐HT₇ receptors. In the present study, in vitro metabolism of N_ω‐methylserotonin was investigated...

article

Pharmacokinetics of prenylated hop phenols in women following oral administration of a standardized extract of hops

Richard B. van Breemen, Yang Yuan, Suzanne Banuvar, Lee P. Shulman, more

Molecular Nutrition & Food Research > 58 > 10 > 1962 - 1969

ScopeWomen seeking alternatives to hormone‐replacement therapy for menopausal symptoms often try botanical dietary supplements containing extracts of hops (Humulus lupulus L.). Hops contain 8‐prenylnaringenin (8‐PN), a potent phytoestrogen, the related flavanones 6‐prenylnaringenin and isoxanthohumol (IX), and the prenylated chalcone xanthohumol (XN). Methods and resultsAfter chemically and biologically...

article

Chloroform Extract of Underground Parts of Ferula heuffelii: Secondary Metabolites and Spasmolytic Activity

Ivan Pavlović, Aleksej Krunić, Dejan Nikolić, Mirjana Radenković, more

Chemistry & Biodiversity > 11 > 9 > 1417 - 1427

Plants from the genus Ferula L. (Apiaceae) were used for various purposes in traditional medicine of different nations throughout the history. Ferula heuffeliiGriseb. ex Heuffel is a perennial species endemic for Balkan peninsula. Ten compounds which belong to classes of prenyl‐furocoumarin‐, prenyl‐dihydrofurochromone‐, prenyl‐benzoyl‐ and prenyl‐benzoylfuranone‐type sesquiterpenoids, as well as...

Publication date

Set your own date range

Data set

Elsevier (20)
ACS (18)
Wiley (13)
Springer (10)
PSJD (8)
ieee (3)

Journal

Journal of Natural Products (8)
Open Medicine (8)
Fitoterapia (5)
Central European Journal of Medicine (4)
Biochemistry (3)
Chemistry & Biodiversity (3)
Molecular Nutrition & Food Research (3)
Analytical Biochemistry (2)
Biomedical Chromatography (2)
Bioorganic & Medicinal Chemistry Letters (2)
Breast Cancer Research and Treatment (2)
Chemical Research in Toxicology (2)
European Journal of Pharmaceutical Sciences (2)
Geriatrics & Gerontology International (2)
Journal of Agricultural and Food Chemistry (2)
Journal of Pharmaceutical and Biomedical Analysis (2)
Analytical Chemistry (1)
Analytical and Bioanalytical Chemistry (1)
Clinical Pharmacology & Therapeutics (1)
Journal of Chromatography A (1)
Journal of The American Society for Mass Spectrometry (1)
Journal of the American Chemical Society (1)
Journal of the American Society for Mass Spectrometry (1)
Medical Oncology (1)
Pharmaceutical Research (1)
Phytochemical Analysis (1)
Phytochemistry (1)
Phytochemistry Letters (1)
Phytomedicine (1)
Psycho‐Oncology (1)
Rapid Communications in Mass Spectrometry (1)
The Journal of Organic Chemistry (1)
The Journal of Steroid Biochemistry and Molecular Biology (1)
more

INFONA - science communication portal

Search results for: Dejan Nikolic

Development of the Melanoma Concerns Questionnaire (MCQ‐28); refinement of the EORTC QLQ‐MEL38 module

Chemical Analysis of Selected Seaweeds and Seagrass from the Adriatic Coast of Montenegro

Sesquiterpene lactones from the methanol extracts of twenty-eight Hieracium species from the Balkan Peninsula and their chemosystematic significance

Heterogeneity of tumor cells and metastases in breast cancer patients: cause or consequence?

Breast cancer and its impact in male transsexuals

Methanol Extracts of 28 Hieracium Species from the Balkan Peninsula – Comparative LC–MS Analysis, Chemosystematic Evaluation of their Flavonoid and Phenolic Acid Profiles and Antioxidant Potentials

Cytochrome P450 inhibition by three licorice species and fourteen licorice constituents

Relationship between fear of falling and functional status in nursing home residents aged older than 65 years

Hepatic metabolism of licochalcone A, a potential chemopreventive chalcone from licorice (Glycyrrhiza inflata), determined using liquid chromatography-tandem mass spectrometry

Evaluation of estrogenic potency of a standardized hops extract on mammary gland biology and on MNU-induced mammary tumor growth in rats

A standardized Humulus lupulus (L.) ethanol extract partially prevents ovariectomy-induced bone loss in the rat without induction of adverse effects in the uterus

Isolation and structural characterization of dihydrobenzofuran congeners of licochalcone A

CASMI 2016: A manual approach for dereplication of natural products using tandem mass spectrometry

Collision‐induced dissociation of phenethylamides: role of ion‐neutral complexes

An implementation of tracking algorithm for over-the-horizon surface wave radar

Antimicrobial and Cytotoxic Activity of Extracts of Ferula heuffelii Griseb. ex Heuff. and Its Metabolites

Impact of radar cross section on HF radar survelance area: Simulation approach

Metabolism of N_ω‐methylserotonin, a serotonergic constituent of black cohosh (Cimicifuga racemosa, L. (Nutt.)), by human liver microsomes

Pharmacokinetics of prenylated hop phenols in women following oral administration of a standardized extract of hops

Chloroform Extract of Underground Parts of Ferula heuffelii: Secondary Metabolites and Spasmolytic Activity

Filter options

Publication date

Publication type

Publication language

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: Dejan Nikolic

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Publication type

Publication language

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options