Antiadipogenic Effects and Mechanisms of Combinations of Genistein, Epigallocatechin-3-Gallate, and/or Resveratrol in Preadipocytes

Bulbul Ahmed,Siqin Liu,Hongwei Si 한국식품영양과학회 2017 Journal of medicinal food Vol.20 No.2

Natural bioactive compounds are considered an excellent alternative strategy for developing effective, safe, and cost-effective antiobesity agents. The aim of this study was to investigate if combinations of soy bean genistein (G), green tea epigallocatechin-3-gallate (E), and/or grape resveratrol (R) at low dosages synergistically inhibit preadipocyte differentiation both in 3T3-L1 cells and human primary preadipocytes (HPAs). Our results show that combinations of G, E, and/or R additively inhibited preadipocyte differentiation (39–56% of control) both in 3T3-L1 cells at 30 μM and HPAs at 15 μM, while the individual compounds have no antiadipogenic effect at the selected concentrations. We also observed similar patterns that combinations of G, E, and/or R additively reduced protein expressions of peroxisome proliferator-activated receptor gamma (PPAR-γ) and CCAAT binding proteins alpha (C/EBP-α), the two key preadipocyte differentiation regulators, both in differentiated 3T3-L1 cells and HPAs. Moreover, combined G, E, and/or R attenuated protein expressions of fatty acid binding protein 4 and perilipin, two PPAR-γ/C/EBP-α downstream molecules in fat drop development in a very similar pattern, in inhibiting differentiation in preadipocytes. This combined antiadipogenic effect of G + E + R is additive, not synergistic according to our results and the Median-Effect Principle. In addition, we found that a lower concentration (15 μM) of G, E, and/or R is required in HPAs than the concentration (30 μM) needed in 3T3-L1 cells, to exert the combined antiadipogenic effect. These data suggest that combinations of G, E, and/or R intake or soy bean, green tea, and/or grape simultaneous consumption may prevent obesity in human being.

필러재료의 변화에 따른 NR-SBR 타입 엘라스토머 기반 고무재료의 기계적물성

Saban Bulbul,Mustafa Yasar,Nuretttin Akcakale 한국고분자학회 2014 폴리머 Vol.38 No.5

The effects of different filling materials and stabilizers in polymer based materials that are used as shoe solesin the shoemaking industry on the mechanical properties (strength, failure, tensile, tearing, bending etc.) of the final products have been examined in this study. Natural rubber (NR RSS3) and styrene-butadiene rubber (SBR 1502) were used as the main matrix material. New compounds were formed by replacing the fillings in the general compound of the existing factory (SiO2, CaCO3) with 40% (1200 g) blast furnace flue dust, rice husk, reclaimed rubber (recycled) and woodash. Comparison of the new compounds with the existing compounds revealed a decrease in hardness, density, dimension stability, bending, tearing, % elongation and failure strength and an increase in wearing.

Morphometric Evaluation of Bony Nasolacrimal Canal in a Caucasian Population with Primary Acquired Nasolacrimal Duct Obstruction: A Multidetector Computed Tomography Study

Erdogan Bulbul,Alper Yazici,Bahar Yanik,Hasmet Yazici,Gulen Demirpolat 대한영상의학회 2016 Korean Journal of Radiology Vol.17 No.2

Objective: The bony nasolacrimal duct (BNLD) morphology as a contributory factor in primary acquired nasolacrimal duct obstruction (PANDO) is still controversial. The objectives of this study were to evaluate the morphometric differences of BNLDs in unilateral PANDO patients between PANDO and non-PANDO sides, as compared with the control group using multidetector computed tomography (CT). Materials and Methods: Bilateral BNLDs in 39 unilateral PANDO patients and 36 control subjects were retrospectively reviewed. CT images with 0.5-mm thickness were obtained with a 64-slice scanner. The length, volume, coronal orientation type, sagittal orientation angle of BNLD, and relative lacrimal sac-BNLD angle were assessed. The entrance, minimum and distal end transverse diameters (TD) of BNLD was investigated. Results: The mean minimum and distal end BNLD TDs measurements were significantly narrower in PANDO patients, both in PANDO and non-PANDO sides, as compared with the control group (p < 0.001 and p = 0.040, respectively); however, there were no significant differences between PANDO and non-PANDO sides within PANDO patients. The length, entrance TD, volume, coronal orientation type, sagittal orientation angle of BNLD, and relative lacrimal sac-BNLD angle were not significantly different between PANDO patients and control subjects, as well as between PANDO and non-PANDO sides within PANDO patients. Conclusion: The narrow mean minimum and distal end BNLD TD in PANDO patients, in both PANDO and non-PANDO sides, may be associated with PANDO development. The lack of difference between PANDO and non-PANDO sides within PANDO patients and some overlap between PANDO patients and control subjects suggest that narrow BNLD is not the sole factor.

Identification of royal jelly as a potential new drug to protect the ovarian reserve and uterus against cyclophosphamide in rats

Mehmet Bulbul,Ali Tekce,Ebru Annac,Omer Korkmaz,Muhittin Onderci,Deniz Korkmaz,Akin Mustafa Demirci The Korean Society for Reproductive Medicine 2023 Clinical and Experimental Reproductive Medicine Vol.50 No.1

Objective: The aim of this study was to investigate the effect of royal jelly (RJ), a powerful natural antioxidant, on cyclophosphamide-induced ovarian damage. Methods: Thirty-two Wistar albino rats were divided into four groups. Oral treatment was administered to all rats for 16 days after a single intraperitoneal injection. The control group received intraperitoneal and oral saline; the RJ group received intraperitoneal saline and 100 mg/kg/day oral RJ; the cyclophosphamide group received intraperitoneal 100 mg/kg cyclophosphamide and oral saline; and the treatment group received intraperitoneal 100 mg/kg cyclophosphamide and 100 mg/kg/day oral RJ. The groups were compared in terms of ovarian reserve tests and histopathological changes in the ovary and uterus. Results: All follicle counts were higher in the treatment group than in the cyclophosphamide group. The increase in the number of preantral follicles (p=0.001) and the decrease in the number of atretic follicles (p=0.004) were statistically significant. RJ treatment significantly improved follicular degeneration and cortical fibrosis in the ovary and epithelial and gland degeneration in the uterus due to cyclophosphamide toxicity. Conclusion: According to these results, RJ reduces cyclophosphamide-related ovarian and endometrial damage in rats. For this reason, it should be further investigated to determine its effects on reproductive function.

Relationship of brain antioxidant protection of aged mice with memory enhancing efficiency of Aegiceras corniculatum leaves

Latifa Bulbul,S. M. Kamruzzaman,Md. Mostafizur Rahman 경희대학교 융합한의과학연구소 2017 Oriental Pharmacy and Experimental Medicine Vol.17 No.4

The present study was investigated the brain antioxidant status and the memory enhancing efficiency of methanolic extract of Aegiceras corniculatum (AC) leaves in mice. The effects of 7-day oral administration of extracts at doses of 50 and 100 mg/kg BW were examined in both adult and aged group of mice. The memory enhancing activity was assessed by passive avoidance (PA) test and Morris water maze test (MWM). Amnesia was induced by scopolamine in MWM test. Both groups were subdivided into three groups (n = 10/groups) for PA test and five groups (n = 5/groups) for MWM test. Instantly after experiment, mice brain homogenates were subjected to determination of acetyl cholinesterase (AChE), superoxide dismutase (SOD), catalase (CAT), thiobarbituric acid reactive substances (TBARS), glutathione peroxidase (GPx), glutathione reductase (GR), glutathione S-transferase (GST), reduced glutathione (GSH) and reactive oxygen species (ROS). In PA test, both doses were significantly increased step through and escape latencies in both group of mice, whereas in MWM test, AC extract also significantly attenuated the effects of scopolamine compared to negative control animals in respective models. Additionally, the highest levels of SOD, CAT, GSH and GST were observed in the aged groups, whereas GR and GSHpx were observed in the adult groups. Moreover, AChE, TBARS and ROS levels were significantly decreased in both groups of mice in a dose-dependent manner. Histopathological analysis also showed the protected effect of AC. These findings together that A. corniculatum has potent antioxidant properties, capable of enhancing cognitive function in both adult and aged mice.

The Effects of Deposition Parameters on Surface Morphology and Crystallographic Orientation of Electroless Ni-B Coatings

Ferhat Bulbul 대한금속·재료학회 2011 METALS AND MATERIALS International Vol.17 No.1

Electroless Ni-B coatings were deposited on AISI 304 stainless steels by electroless deposition method, which was performed for nine different test conditions at various levels of temperature, concentration of NaBH4,concentration of NiCl2, and time, using the Taguchi L9(34) experimental method. The effects of deposition parameters on the crystallographic orientation of electroless Ni-B coatings were investigated using SEM and XRD equipment. SEM analysis revealed that the Ni-B coatings developed six types (pea-like, maize-like,primary nodular, blackberry-like or grapes-like, broccoli-like, and cauliflower-like) of morphological structures depending on the deposition parameters. XRD results also showed that these structures exhibited different levels of amorphous character. The concentration of NaBH4 had the most dominant effect on the morphological and crystallographic development of electroless Ni-B coatings.

Leea macrophylla (Roxb.) root extract reverses CCl4 induced liver injury through upregulation of antioxidative gene expression: a molecular interaction for therapeutic inception

Md. Rakibul Hassan Bulbul,Md. Atiar Rahman,Md. Zillur Rahman,Talha Bin Emran,Mirola Afroze,Mala Khan,Muhammad Abid Hasan Chowdhury,Mohammed Auwal Ibrahim,Mohammed Sohel Chowdhury 경희대학교 융합한의과학연구소 2020 Oriental Pharmacy and Experimental Medicine Vol.20 No.1

This study investigated the restorative effect of Leea macrophylla ethanol root extract (LMERE) in carbon tetrachloride (CCl4) induced hepatic injury. It also tried to unfold the underlying mechanism through ligand-receptor interactions. Prior to conduct the CCl4 induced animal model study, the in vitro antioxidative capacities of LMERE were investigated. Gas chromatography mass spectroscopy (GC–MS) was accomplished to identify the prevalent bioactive compounds. The molecular docking was performed using Schrödinger Suites 2017-1. Results showed the promising antioxidative potentials of LMERE in in vitro models. Upon treatment of CCl4 intoxicated animals with LMERE, serum ALT and AST were found to be significantly (p < 0.05) reduced compared to the CCl4 control while LMERE50 was noted as the best dose in restoring the hepatic markers. Serum lipids and total protein were significantly restored compared to control. Remarkable changes of cell necrosis, apoptosis and sinusoidal dilution were noticed in histopathological assay of liver tissue. mRNA expression for superoxide dismutase (SOD1) and catalase was multifold increased which are statistically significant compared to reference drug, silymarin. In docking study, octadecanoic acid showed the lowest binding energy and highest binding affinity with the protein (ID: 1VKX) which is a crystallized structure of NF-κB p50/p65 heterodimer involved in cytokine production. The findings demonstrate that LMERE restores the hepatic damage by the mRNA expression of antioxidative enzymes while LMERE50, at a glance, seems the most suitable dose.

Birt-Hogg-Dubé Syndrome: Diagnostic Journey of Three Cases from Skin to Gene

( Eda Hasal ),( Emel Bulbul Baskan ),( Seref Gul ),( Asli Gorek Dilektasli ),( Sebnem Ozemri Sag ),( Saduman Balaban Adim ),( Sehime Gulsun Temel ) 대한피부과학회 2022 Annals of Dermatology Vol.34 No.1

Birt-Hogg-Dube syndrome (BHDS) is a rare disorder characterized by the triad of cutaneous lesions, renal tumors, lung cysts and inactivation of the gene folliculin (FLCN). Here, we present three female patients diagnosed with BHDS. First case a 55-year-old female had flesh moles histopathology compatible with angiofibroma, multiple cysts in the lung and kidneys, FLCN gene mutations (‘c.1285dupC [p.His429Profs*]’ 11th exon and ‘c.653G>A [p.Arg258His]’ 7th exon). The second case a 76-year-old female had trichodiscoma on her skin, multiple cysts in the lung, spontaneous pneumothorax, FLCN gene mutation ‘c.1285dupC (p.His429Profs*27) 11th exon’ and, her son had renal carcinoma history under 50 years of age. Our third case, also the daughter of case 2, had dermal papules histopathology compatible with trichodiscoma, spontaneous pneumothorax, FLCN gene mutation ‘c.1285dupC (p.His429Profs*27) 11th exon’ and, parotid oncocytoma. Through our cases, we document the first case of two mutations (‘c.1285dupC [p.His429Profs*]’ 11th exon and ‘c.653G>A [p.Arg258His]’ 7th exon) in the same FLCN gene and the 11th known case of parotid oncocytoma associated with BHDS in the light of the literature.

3-Arm PEG Based Amphiphilic Polymer Sorbents for Polar and Non-Polar Liquids

Soner Kizil,Hayal Bulbul Sonmez 한국고분자학회 2019 Macromolecular Research Vol.27 No.11

Crosslinked polymer gels are gaining technological and industrial attention due to their sophisticated application features. Herein, a highly effective amphiphilic polymeric network capable of absorbing polar and nonpolar solvents was produced using hydrophilic glycerol ethoxylate, a member of star type polyethylene glycol (s- PEG), and different hydrophobic organosilane monomers by bulk polymerization as utilized under an inert atmosphere. In this context, the preparation of amphiphilic polymeric networks was achieved by the reaction between hydroxyl terminated s- PEG and ethoxysilane terminated organosilane without using any initiator, activator or a catalyst. SEM, FTIR, 13C and 29Si CPMAS NMR and TGA are used for morphological, structural and thermal characterization of the prepared materials. Likewise, the absorption behavior of amphiphilic polymeric networks was determined by measuring their swelling ratios in polar and nonpolar solvents. Because of having a hydrophobic and hydrophilic structure in their 3D polymeric structure, the obtained polymeric networks behave as an organogel in oil medium, while they can prepared as a hydrogel in aqueous medium. The effect of crosslinker’s difference on the swelling capacity of sorbent were researched by comparing different molecular weight of monomers, and it was found that the molecular structure of organosilane monomers had significant influence on the swelling ability of obtained amphiphilic sorbents. By the use of easy preparations, not needing extra agents for the synthesis, having high and quick absorption abilities in organic solvents showed that the resulting amphiphilic sorbent have potential as absorbents for different organic solvents. Also, the degradable features of amphiphilic polymer networks in water open up optimum application opportunities for additional uses, such as with drug delivery agents.

ORiginal Article : Ischemia-Modified Albumin: Could It Be a New Oxidative Stress Biomarker for Colorectal Carcinoma?

( Hamit Yasar Ellidag ),( Nurullah Bulbuller ),( Esin Eren ),( Sedat Abusoglu ),( Evren Akgol ),( Mustafa Cetiner ),( Necat Yilma ) The Editorial Office of Gut and Liver 2013 Gut and Liver Vol.7 No.6

Background/Aims: An impaired oxidative/antioxidative status plays an important role in the pathogenesis of many diseases, including cancer. The aim of this study was to evaluate the levels of the novel marker ischemia-modified al-bumin (IMA) and albumin-adjusted IMA (Adj-IMA) in patients with colorectal cancer (CRC) and look for the associations of these with the total antioxidant status (TAS), total oxidant status (TOS), and oxidative stress index (OSI). Methods: Forty patients with CRC (19 females and 21 males; mean age, 56.5±2.1 years) and 39 age- and sex-matched healthy peo-ple (22 females and 17 males; mean age, 56.0±1.7 years) were included in this study. Serum levels of IMA, TAS, and TOS were analyzed, and the OSI was calculated. Results: Serum IMA, TOS, and OSI levels were significantly higher in patients with CRC than in controls (p<0.0001), whereas TAS levels were significantly lower in CRC patients (p=0.03). There was no significant difference in serum Adj-IMA levels between groups (p=0.32). Conclusions: In this study, the oxidative/antioxidant status was impaired in favor of oxida-tive stress in CRC patients. This observation was not con-firmed by IMA measurement. Further studies are needed to establish the relationship between IMA and oxidative stress parameters in CRC and other cancers. (Gut Liver 2013;7:675-680)