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Dinić J, Podolski-Renić A, Jeremić M, Pešić M. Potential of Natural-Based Anticancer Compounds for P-Glycoprotein Inhibition. Curr Pharm Des 2019; 24:4334-4354. [DOI: 10.2174/1381612825666190112164211] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 12/28/2018] [Accepted: 01/03/2019] [Indexed: 11/22/2022]
Abstract
Medicinal value of natural products comes from symbiotic and competitive evolution in Earth’s complex
biosphere. Billions of years of co-evolutionary interactions among millions of species have produced a large
repertoire of defense molecules effective in fighting bacteria, viral, and fungal pathogens. Each species contains
millions of different and useful molecules and new research technologies enabled the screening of molecules and
complex mixtures from diverse biological sources. Traditional use of plants and other species led to the discovery
of many bioactive compounds with various properties. In the last four decades, a large number of them were
evaluated for their potential to treat cancer. Penetration of drugs into the cancer cell is necessary for their lethal
pharmacological effect through interaction with intracellular target molecules. Increased activity of membrane
efflux pumps reduces the intracellular drug accumulation, thereby preventing drug-target interactions. The discovery
of the efflux transporter P-glycoprotein (P-gp) in multidrug resistant (MDR) cancer cells prompted the
efforts in overcoming drug resistance by P-gp inhibition. The search for nontoxic anticancer agents from natural
sources able to overcome MDR has been imperative in the field of drug design and discovery. Herein, we review
various natural compounds from diverse sources emphasizing their potential to inhibit P-gp activity and/or expression.
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Đorđević J, Kolarević S, Jovanović J, Kostić-Vuković J, Novaković I, Jeremić M, Sladić D, Vuković-Gačić B. Evaluation of genotoxic potential of tert-butylquinone and its derivatives in prokaryotic and eukaryotic test models. Drug Chem Toxicol 2018; 43:522-530. [PMID: 30257571 DOI: 10.1080/01480545.2018.1514043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Tert-butylquinone (TBQ) and its alkylamino and aralkylamino derivatives are of high interest as a potential antitumor agent. Therefore, it was necessary to investigate if the compounds exert undesirable activities such as interaction with DNA molecule which could result in negative side effects in the case of their use in the diseases treatment. The major aim of this study was to investigate genotoxic potential of TBQ and selected derivatives in an acellular model by using plasmid DNA, in the prokaryotic model by the SOS/umuC assay in Salmonella typhimurium TA1535/pSK1002 and in eukaryotic models by using comet assay in human fetal lung cell line (MRC-5) and human liver cancer cell line (HepG2). Results indicated that in the acellular model TBQ and its derivatives do not interact with plasmid pUC19. In the prokaryotic model, only TBQ exerted weak genotoxic potential and only at highly cytotoxic concentrations. In eukaryotic models, genotoxic potential was detected mainly at the highest concentrations of the tested substances but the effect was lower in both cell lines in comparison with benzo[a]pyrene and etoposide which were used as positive controls. Weak genotoxic potential of tested compounds recommends them as good candidates for further testing in development of new antitumor agents.
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Jeremić M, Vuković A, Marković D, Vuković R, Stanojlović N. History of dentistry in central Serbia. BALKAN JOURNAL OF DENTAL MEDICINE 2016. [DOI: 10.1515/bjdm-2016-0022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
History of dentistry in the Central Serbian District of Jagodina has been influenced by traditional medicine for centuries. Development of dentistry in the region of Jagodina was slow, the level of oral and general hygiene was low and the sanitary prevention was absent. Trained physicians started to practice medicine and dentistry in the first half of the nineteenth century and they were educated in abroad universities. However, common people used to address to these physicians only when the traditional medicine were unable to help. Until the end of the World War II, common, mostly rural people, with the urgent dental treatment need were usually referred to the barbers, healers or empirics in the nearby villages rather than the dentists. Medications used for the urgent dental treatment were balsams and solutions made of herbs. After the World War II, the dental technicians who finished special courses started to practice dentistry. In 1947 the Regional Dental Office in Jagodina was opened and in 1955 the first Doctor of Dental Medicine who graduated from the School of Dental Medicine of University of Belgrade was employed. Nowadays, the Department of Dentistry represents is an important and independent part of the Health Care Centre in Jagodina.
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Čobeljić B, Pevec A, Turel I, Swart M, Mitić D, Milenković M, Marković I, Jovanović M, Sladić D, Jeremić M, Anđelković K. Synthesis, characterization, DFT calculations and biological activity of derivatives of 3-acetylpyridine and the zinc(II) complex with the condensation product of 3-acetylpyridine and semicarbazide. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.04.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Djikanović D, Kalauzi A, Radotić K, Lapierre C, Jeremić M. Deconvolution of lignin fluorescence spectra: A contribution to the comparative structural studies of lignins. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2007. [DOI: 10.1134/s0036024407090142] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Radotić K, Tasić M, Jeremić M, Budimlija Z, Simić-Krstić J, Polzović A, Bozović Z. Fractal analysis of STM images of photochemical polymer of coniferyl alcohol. Gen Physiol Biophys 2001; 20:33-42. [PMID: 11508820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Fractal analysis was applied to images of photochemical lignin polymer obtained using scanning tunneling microscope. We studied the polymer obtained in vitro by ionic mechanism through UV radiation--induced polymerization. The analysis showed the regularity of the lignin-like polymer at different levels of organization. At the 95% confidence level, there was no significant difference in the fractal dimension between images representing different organizational levels of photochemical lignin. That means that lignin produced in in vitro conditions by photochemical mechanism of synthesis, has a fractal structural organization. The obtained values of the fractal dimension are in good agreement with the theoretically predicted value for the polyaddition and polycondensation mechanism of polymerization, known as the bulk model.
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Radotić K, Tasić M, Jeremić M, Budimlija Z, Simić-Krstić J, Polzović A, Bozović Z. Fractal analysis of STM images of lignin polymer obtained by in vitro synthesis. Gen Physiol Biophys 2000; 19:171-80. [PMID: 11156440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Lignin, the structural polymer of the plant cell walls, is produced by free radical polymerization of phenolic alcohols, catalyzed by different peroxidases. The mechanism and the structural organization of lignin in the cell have not been completely understood. In this study we applied fractal analysis to images of lignin polymer obtained using scanning tunneling microscope. The analysis showed the regularity of the polymer at different levels of organization. According to the results obtained, at the 95% confidence level, there is no significant difference in the fractal dimension between images representing different organizational levels of lignin. In other words, lignin produced in in vitro conditions has fractal structural organization and, consequently the polymer can be expected to be regular in in vivo conditions. The value of the fractal dimension 1.929 +/- 0.021 is in good agreement with the theoretically predicted value for polyaddition and polycondensation mechanism of polymerization. The mechanism of in vivo lignin synthesis is discussed in terms of various experimental and theoretical evidences. In this paper, we could show that fractal analysis of the lignin polymer is a useful complementary approach to the experimental data collection in structural and phenomenological studies.
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Marković DZ, Radenović CN, Rafailović L, Zerajić SA, Jeremić M, Marković MB. Temperature dependence of delayed fluorescence induction curve transients. Gen Physiol Biophys 1999; 18:257-67. [PMID: 10703742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
The temperature dependence of delayed millisecond fluorescence (DF) induction curve transients was investigated. The transients were obtained by keeping intact maize leaf segments in the dark for 30 to 300 s before illumination. The temperature dependence of DF induction revealed abrupt changes in activation energy of the recombination process. Those changes highly overcome the lowest energy barriers for certain types of chemical reactions, implying significant possible alterations in the DF mechanism itself. On the other hand, the particular transients responses expressed some specificities. Both the electrochemical gradient controlled changes, and the temperature induced changes contribute to it.
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Radotić K, Radenović C, Jeremić M. Spontaneous ultraweak bioluminescence in plants: origin, mechanisms and properties. Gen Physiol Biophys 1998; 17:289-308. [PMID: 10191416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
An analysis of theoretical knowledge and experimental results of ultraweak luminescence (UWL) is provided. The role of excited state of molecules and free radicals, formed in various biochemical reactions, in UWL is discussed. UWL of model reactions and in vivo systems are compared. The hypothesis of coherent electromagnetic field as a source of UWL is also discussed. Spectral, kinetic and temporal properties of UWL are summarised, as well as their connection with its origin and role in the organism. Attention is paid to recent progress in experimental methods of low-light detection. The possible use of UWL in environmental studies, selection and other applications is discussed.
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Djordjević M, Rancˇić Z, Djordjević L, Djordjević R, Djordjević T, Pesˇić M, Jeremić M, Gmijović D, Marjanović H, Stojiljković M. Characteristics of breast cancer in elderly women. Eur J Cancer 1998. [DOI: 10.1016/s0959-8049(98)80540-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Šašić S, Antić-Jovanović A, Jeremić M. An investigation of the equilibrium of mercury(II) thiocyanate complexes in DMF solutions via Raman spectra and factor analysis. ACTA ACUST UNITED AC 1998. [DOI: 10.1039/a805192e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Radotić K, Simić-Krstić J, Jeremić M, Trifunović M. A study of lignin formation at the molecular level by scanning tunneling microscopy. Biophys J 1994; 66:1763-7. [PMID: 8075317 PMCID: PMC1275902 DOI: 10.1016/s0006-3495(94)81007-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
A scanning tunneling microscope (STM) was used to observe the temporal formation and organization of dehydrogenative polymer (DHP) synthesized from coniferyl alcohol. The images obtained elucidate this structure for the first time. The structure of DHP, as seen from STM images, shows long-range order. It appears that DHP consists of building units or modules assembled into larger assemblies called supermodules. Supermodules are interconnected into the overall lattice-like polymer structure with or without spherical regions. One module consists of about 20 monomers, while the supermodule contains about 500 monomers. Calculated molecular weights for modules and supermodules agree with DHP molecular weight distribution peaks. Samples prepared at two different pH values, 6.4 and 7.6, have the same characteristics. The results presented demonstrate that the process of lignification, even in in vitro conditions, is highly ordered, and as such contribute to our understanding of the structure of lignin, a significant constitutive and functional element of cell walls.
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Marković D, Jeremić M, Radenović C, Schara M. Irreversible structural changes in thylakoid membranes at high temperatures. Detection by luminescence and EPR. Gen Physiol Biophys 1993; 12:37-47. [PMID: 8405910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The character of structural changes in thylakoid membranes caused by temperature variation was investigated. Experiments were performed on maize leaf segments in vivo and in a closed temperature cycle 24-50-24 degrees C. Two biophysical methods were used for detection: luminescence and EPR. Arrhenius plots of delayed fluorescence (DF) versus reciprocal temperature revealed two break points, T1 and T2. The MeFASL (10.3) spin probe monitoring properties close to membrane surface detected only T2 transition temperature. The results were interpreted in terms of a fluidity change which starts in a membrane centre at T1 and gradually displaces toward the surface at T2. The T1 and T2 transition temperatures are sensitive to pretreatment history of plants indicating that high temperature and drought-induced membrane alterations are irreversible. Activation energies E1, E2 and E3 were determined for temperature regions below T1 between T1 and T2, and above T2, respectively. The E1 and E3 activation energies showed greater sensitivity to stress than did E2. There are some indications that the DF method could be used to screen temperature sensitive and temperature resistant genotypes.
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Radotić K, Redenović C, Jeremić M, Vucinić Z. Effect of propagators and inhibitors on the ultraweak luminescence from maize roots. JOURNAL OF BIOLUMINESCENCE AND CHEMILUMINESCENCE 1990; 5:221-5. [PMID: 2174639 DOI: 10.1002/bio.1170050403] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This study has investigated the kinetics and mechanism of ultraweak luminescence in maize roots. Mannitol induced the second maximum and enhanced the main maximum of the relative intensity of luminescence from the roots. Hydroquinone and quinone enhanced the relative intensity of the luminescence. Catalase enhanced the maximum of the luminescence and changed the kinetics of the light emission. The effect of catalase on the kinetics was abolished by superoxide dismutase. Ascorbate in the presence of catalase on the kinetics was abolished by superoxide dismutase. Ascorbate in the presence of catalase reduced the luminescence maximum, but did not alter the kinetics. In the presence of catalase only, or in the combination with superoxide dismutase, or ascorbate, the luminescence intensity in the stationary phase was significantly lower compared to the control. The results support the participation of superoxide-radical, singlet oxygen, electron transfer and the role of peroxidase in the reactions generating ultraweak luminescence in the roots. Ascorbate, catalase and superoxide dismutase have a protective role in the luminescent reactions.
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Lalic M, Jeremić M, Antic-Jovanović A, Bojović V. Raman spectral study of solutions of LiClO4 and Sr(ClO4)2 in some organic solvents. J Mol Liq 1988. [DOI: 10.1016/0167-7322(88)80054-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Marković A, Kisić M, Vucić M, Tomić R, Jeremić M. [Value and significance of ante-partum cardiotocography associated with amnioscopy in the control of prolonged pregnancy]. SRP ARK CELOK LEK 1978; 106:305-10. [PMID: 749247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Jeremić M, Antić-Jovanović A, Bojović V. Copper(II) — chloramphenicol complex formation in methanol and aqueous solutions. ACTA ACUST UNITED AC 1978. [DOI: 10.1016/0020-1650(78)80017-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Djurić M, Jeremić M. [Hysterosalpingography in the conservative care of cervical pregnancy]. SRP ARK CELOK LEK 1977; 105:1133-8. [PMID: 617014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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Djurić M, Jeremić M, Ristić P. [Experience with vaginal hysterectomy]. SRP ARK CELOK LEK 1971; 99:843-9. [PMID: 5155095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Djurić M, Knezev B, Jeremić M. [A case of tumor of the uterine blood vessels]. SRP ARK CELOK LEK 1969; 97:625-8. [PMID: 5198381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Djurić M, Knezev B, Rajković V, Jeremić M. [Myoma praeviam. Pregnancy and delivery. Report of 2 cases]. SRP ARK CELOK LEK 1969; 97:247-52. [PMID: 5198124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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