Objective(s): Many studies have reported that tea consumption decreases cardiovascular risk, but ... more Objective(s): Many studies have reported that tea consumption decreases cardiovascular risk, but the mechanisms remain unclear. Green tea is known to have potent antioxidant and free radical scavenging activities. This study aimed to investigate whether green tea extract (GTE) can protect endothelial progenitors cells (EPCs) against oxidative stress through antioxidant mechanisms. Materials and Methods: Mononuclear cells (MNCs) were isolated from peripheral blood by density gradient centrifugation with Ficoll. The cells were then plated on fibronectin-coated culture dishes. After 7 days of culture, EPCs were characterized as adherent cells double positive for DiI-ac-LDL uptake and lectin binding. EPCs were further identified by assessing the expression of CD34/45, CD133, and KDR. EPCs were then treated with hydrogen peroxide (H2O2) at doses of 50, 100, 200 µM and incubated with or without GTE (25 µg/ml). The intracellular reactive oxygen species (ROS) levels were detected by flow cytometry using a 2',7'-dichlorofluorescein diacetate (DCF-DA) fluorescent probe. Results: GTE ameliorated the cell viability of EPCs induced by H2O2 at doses of 50, 100, 200 µM for about 25.47, 22.52, and 11.96% higher than controls, respectively. GTE also decreased the intracellular ROS levels of EPCs induced by H2O2 at doses of 50, 100, 200 µM for about 84.24, 92.27, and 93.72% compared to controls, respectively. Conclusion: GTE improves cell viability by reducing the intracellular ROS accumulation in H2O2-induced EPCs. I. Green tea extract protects endothelial progenitor cells from oxidative insult through reduction of intracellular reactive oxygen species activity. Iran J Basic Med Sci 2014; 17:702-709.
Aim: To evaluate the ability of â-carotene to protect oxidation effect of H 2 O 2 , and to enhanc... more Aim: To evaluate the ability of â-carotene to protect oxidation effect of H 2 O 2 , and to enhance proliferation and differentiation into AD-MSCs into EPCs. Experimental: AD-MSCs were induced by EGM Bullet Kit medium with or without â-carotene. The proliferation of EPCs was determined by viable cell number counts. Differentiation into EPCs was characterized by the following surface markers: CD 34, CD133 and vascular endothelial growth factor receptor 2 (VEGFR-2). The protective effect of â-carotene was measured base on the level of intracellular reactive oxygen species (ROS) by fluorescence with 2',7'-dichlorofluorescein diacetate (DCF-DA) using flow cytometry. Results: â-Carotene enhanced cell proliferation and differentiation of AD-MSCs into EPCs, and also decreased the accumulation of H 2 0 2-induced intracellular ROS in EPCs. Conclusion: â-Carotene plays a role in cell proliferation and differentiation of AD-MSCs to EPCs that might be due to decreased intracellular ROS level.
Atherosclerosis as one of the causes of cardiovascular disease will induce endothelial dysfunctio... more Atherosclerosis as one of the causes of cardiovascular disease will induce endothelial dysfunction and platelet aggregation. Mangostin peel extract (MPE) contains xanthones which have antioxidant activity, anti-cholesterol, anti aggregation, and anti-inflammatory in preventing and inhibiting atherosclerosis. In this research, MPE was evaluated the xanthones quantitative based on standard xanthone compounds using High Liquid Performance Chromatography (HPLC) method and tested anti aggregation platelet activity and ABTS+ 2,2-Azinobis-(3 ethylbenzothiazoline-6-sulfonic acid) diammonium (ABTS)-reducing activity. The anti-aggregation platelet using agonist namely adenosine diphosphate inducer (ADP), collagen (COLL), and epinephrine (EPN). Quantification of MPE using four xanthones compound as a marker, showed that MPE contained α-mangostin 105 ppm, γ-mangostin 7.20 ppm, 9.92 ppm Gar-C, and Gar-D 3.50 ppm. MPE and xathones had high ABTS-reducing activity and the most active was , α-mangostin with IC50 2.348 µg/ml. α-mangostin and γ-mangostin had anti-aggregation activity on EPN inducer were comparable with aspirin. MPE and xathones had not anti-aggregation activity on COLL and ADP inducer. MPE contain xathones including α-mangostin, γ-mangostin, Garcinone-C and Garcinone-D. MPE and xanthones have high ABTS-reducing activity. MPE, α-mangostin, γ-mangostin, Garcinone-D decrease EPN-induced aggregation platelet. α-mangostin, γ-mangostin were the most active antiaggregation and antioxidant activities.
This article appeared in a journal published by Elsevier. The attached copy is furnished to the a... more This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: http://www.elsevier.com/authorsrights
BACKGROUND Plant-derived herbal compounds have a long history of clinical use, better patient tol... more BACKGROUND Plant-derived herbal compounds have a long history of clinical use, better patient tolerance and acceptance. They are freely available natural compounds that can be safely used to prevent various ailments. Plants have been the basis of traditional medicine throughout the world for thousands of years and are providing mankind with new remedies. The objective of this study was to determine the cytotoxicity of soursop (Anona muricata Linn) leaves and pearl grass (Hedyotis corymbosa (L.) Lam.) on the hormone-dependent human breast carcinoma Michigan Cancer Foundation-7 (MCF-7) cell line.
Objective: Breast cancer is a malignant disease of women most often found after cervical cancer i... more Objective: Breast cancer is a malignant disease of women most often found after cervical cancer in Indonesia. Increased levels of free radicals can cause DNA damage, which could lead to malignancy; this can play role in breast cancer etiopathogenesis. The present research was conducted to determine the activity of catechins as antioxidants and their potential efficacy in inhibiting breast cancer malignancy. Methods: The research was done by examining the antioxidant and free radical scavenging activity including 1,1-diphenyl-2-picryl-hydrazyl (DPPH), the value of superoxide dismutase (SOD), and assays in breast cancer cell lines (T47D, MCF7). The cytotoxic potency was determined by the MTS (3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium) assay. Results: The highest DPPH scavenging activity is presented by (-)-epigallocatechin (EGC) and the lowest by gallo catechins (GC). The highest SOD value were reached with EGC at 500 µg/ml, followed by (-)-epicatechin gallate (ECG) at 125 µg/ml, and GC at 31.25 µg/ml concentrations. The highest cytotoxic activity in T47D cell line for 24 and 48 h incubation was exhibited by (-)-gallocatechin gallate (GCG). The greatest cytotoxic activity in MCF7 cell line for 24 h was presented by (-)-epigallocatechin gallate (EGCG), and for 48 h incubation by (+)-catechin (C). Conclusion: Catechins have high antioxidant activities proven by both DPPH scavenging and SOD activities. They possess higher anticancer action on T47D than on MCF7 cell line.
Cancer is one the most common life-threatening diseases. Cancer cases worldwide are forecast to r... more Cancer is one the most common life-threatening diseases. Cancer cases worldwide are forecast to rise by 75% in the future. Although cancer therapies have been improved, many tumors remain unresponsive to conventional treatments, such as radiation and chemotherapy. Therefore, novel strategies in treating and managing the disease are urgently needed. Wharton's Jelly-derived mesenchymal stem cells (WJ-MSCs) have recently been shown to possess anti-cancer activities as well as tumor-homing ability. These cells are able to migrate to sites of neoplastic growth in vivo and their secretory products display tumoricidal activity both in vitro and in vivo models of human cancer. Recent reports also suggest that the anti-cancer potential of WJ-MSCs can also be enhanced through genetic engineering. This review will summarize the current understanding on the interactions between WJ-MSCs and tumor cells, as well as the potential use of both un-engineered and engineered WJ-MSCs as an anti-cancer agent.
Background: Obesity is considered an emergency health problem through out the world and is charac... more Background: Obesity is considered an emergency health problem through out the world and is characterized by an increase in the number and size of adipocytes in adipose tissue. Some phytochemical bioactive have been shown to inhibit adipocyte differentiation and induce adipocyte apoptosis. The Objective: In this ex vivo study, we evaluated the cytotoxic effects, antiobesity and antidiapogenesis potential of ethanol extract of Detam 1 soybean seed (EEDS), Jati Belanda Original Research Article Hidayat et al.; JSRR, 6(4): xxx-xxx, 2015; Article no.JSRR.2015.156 305 leaves (EEJB) and their combinations on 3T3-L1 cells. Experimental Approach: The cytotoxic effect of EEDS and EEJB were assayed using MTS assay. Triglyceride (TG) level and inhibitory activity were assayed using a TG assay kit. Glucose 6-phosphate dehydrogenase (G6PD) activity and inhibitory activity were determined by using G6PDH assay kit. The cholesterol level was measured according to the Chol Kit Randox protocol. Results: The lowest cytotoxic activity and safe substances on 3T3-L1 cell were EEDS and EEJB in 50 and 10 µg/ml of concentration. EEJB in the concentration of 50 µg/ml was the most active to inhibit G6PD, TG, and cholesterol activity with inhibition activities 47.30%, 37.93% and 73.91% respectively compared to the control (differentiated 3T3-L1 adipocyte). Conclusion: Ethanol extract of Detam 1 soybean seed and Jati Belanda leaves posses the inhibitory potential on G6PD, triglyceride and cholesterol activities in 3T3-L1 cell line and the most active compound showed by ethanol extract of Jati Belanda leaves.
This study was performed to elucidate the potential of human platelet lysate (huPL) as an alterna... more This study was performed to elucidate the potential of human platelet lysate (huPL) as an alternative to xeno-free media for culturing mesenchymal stem cells (MSCs). In this work, Wharton's jelly-derived MSCs (WJ-MSCs; n Z 5) were isolated, characterized, and cultured in huPL derived from type O platelets reconstituted with type AB platelet-poor plasma (huPLeABO). WJ-MSCs from five donors were cultured under two different conditions [cell culture supplemented with 20% fetal bovine serum (FBS) and 0.250 mg/mL, 0.125 mg/ mL, 0.063 mg/mL, and 0.031 mg/mL huPL]. Growth kinetics, cell surface markers, and in vitro differentiation potential toward the adipogenic, chondrogenic, and osteogenic line-ages were evaluated. Our results indicate that WJ-MSCs cultured in the presence of huPLeABO showed typical fibroblast-like morphology and had a significantly higher cell count (p < 0.05), compared with those cultured in FBS. Furthermore, results of immunophenotyping assay showed similar MSCs characteristics for both culture conditions. In addition, no significant differences were observed in the MSCs differentiation toward the adipogenic, chondrogenic, and osteogenic lineages. The optimal concentrations of huPLeABO in the culture medium were 0.250 mg/mL and 0.125 mg/mL. Because of insignificant differences between the concentrations in terms of WJ-MSCs population doubling time, the concentration of 0.125 mg/mL was used in all comparisons between FBS and huPLeABO. The average concentrations of insulin-like growth factor-1, platelet-derived growth factor-AB, vascular endothelial growth factor, and transforming growth factor-b1 in huPLeABO were 287.89 pg/mg, 47,096.63 pg/mg, Biomarkers and Genomic Medicine (2015) xx, 1e11 150.93 pg/mg, and 74,817.76 pg/mg, respectively. huPLeABO produced by this method was able to enhance the WJ-MSCs proliferation rate constantly and decrease the required time to reach confluence compared with the FBS culture condition.
Objective(s): Many studies have reported that tea consumption decreases cardiovascular risk, but ... more Objective(s): Many studies have reported that tea consumption decreases cardiovascular risk, but the mechanisms remain unclear. Green tea is known to have potent antioxidant and free radical scavenging activities. This study aimed to investigate whether green tea extract (GTE) can protect endothelial progenitors cells (EPCs) against oxidative stress through antioxidant mechanisms. Materials and Methods: Mononuclear cells (MNCs) were isolated from peripheral blood by density gradient centrifugation with Ficoll. The cells were then plated on fibronectin-coated culture dishes. After 7 days of culture, EPCs were characterized as adherent cells double positive for DiI-ac-LDL uptake and lectin binding. EPCs were further identified by assessing the expression of CD34/45, CD133, and KDR. EPCs were then treated with hydrogen peroxide (H2O2) at doses of 50, 100, 200 µM and incubated with or without GTE (25 µg/ml). The intracellular reactive oxygen species (ROS) levels were detected by flow cytometry using a 2',7'-dichlorofluorescein diacetate (DCF-DA) fluorescent probe. Results: GTE ameliorated the cell viability of EPCs induced by H2O2 at doses of 50, 100, 200 µM for about 25.47, 22.52, and 11.96% higher than controls, respectively. GTE also decreased the intracellular ROS levels of EPCs induced by H2O2 at doses of 50, 100, 200 µM for about 84.24, 92.27, and 93.72% compared to controls, respectively. Conclusion: GTE improves cell viability by reducing the intracellular ROS accumulation in H2O2-induced EPCs. I. Green tea extract protects endothelial progenitor cells from oxidative insult through reduction of intracellular reactive oxygen species activity. Iran J Basic Med Sci 2014; 17:702-709.
Aim: To evaluate the ability of â-carotene to protect oxidation effect of H 2 O 2 , and to enhanc... more Aim: To evaluate the ability of â-carotene to protect oxidation effect of H 2 O 2 , and to enhance proliferation and differentiation into AD-MSCs into EPCs. Experimental: AD-MSCs were induced by EGM Bullet Kit medium with or without â-carotene. The proliferation of EPCs was determined by viable cell number counts. Differentiation into EPCs was characterized by the following surface markers: CD 34, CD133 and vascular endothelial growth factor receptor 2 (VEGFR-2). The protective effect of â-carotene was measured base on the level of intracellular reactive oxygen species (ROS) by fluorescence with 2',7'-dichlorofluorescein diacetate (DCF-DA) using flow cytometry. Results: â-Carotene enhanced cell proliferation and differentiation of AD-MSCs into EPCs, and also decreased the accumulation of H 2 0 2-induced intracellular ROS in EPCs. Conclusion: â-Carotene plays a role in cell proliferation and differentiation of AD-MSCs to EPCs that might be due to decreased intracellular ROS level.
Atherosclerosis as one of the causes of cardiovascular disease will induce endothelial dysfunctio... more Atherosclerosis as one of the causes of cardiovascular disease will induce endothelial dysfunction and platelet aggregation. Mangostin peel extract (MPE) contains xanthones which have antioxidant activity, anti-cholesterol, anti aggregation, and anti-inflammatory in preventing and inhibiting atherosclerosis. In this research, MPE was evaluated the xanthones quantitative based on standard xanthone compounds using High Liquid Performance Chromatography (HPLC) method and tested anti aggregation platelet activity and ABTS+ 2,2-Azinobis-(3 ethylbenzothiazoline-6-sulfonic acid) diammonium (ABTS)-reducing activity. The anti-aggregation platelet using agonist namely adenosine diphosphate inducer (ADP), collagen (COLL), and epinephrine (EPN). Quantification of MPE using four xanthones compound as a marker, showed that MPE contained α-mangostin 105 ppm, γ-mangostin 7.20 ppm, 9.92 ppm Gar-C, and Gar-D 3.50 ppm. MPE and xathones had high ABTS-reducing activity and the most active was , α-mangostin with IC50 2.348 µg/ml. α-mangostin and γ-mangostin had anti-aggregation activity on EPN inducer were comparable with aspirin. MPE and xathones had not anti-aggregation activity on COLL and ADP inducer. MPE contain xathones including α-mangostin, γ-mangostin, Garcinone-C and Garcinone-D. MPE and xanthones have high ABTS-reducing activity. MPE, α-mangostin, γ-mangostin, Garcinone-D decrease EPN-induced aggregation platelet. α-mangostin, γ-mangostin were the most active antiaggregation and antioxidant activities.
This article appeared in a journal published by Elsevier. The attached copy is furnished to the a... more This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: http://www.elsevier.com/authorsrights
BACKGROUND Plant-derived herbal compounds have a long history of clinical use, better patient tol... more BACKGROUND Plant-derived herbal compounds have a long history of clinical use, better patient tolerance and acceptance. They are freely available natural compounds that can be safely used to prevent various ailments. Plants have been the basis of traditional medicine throughout the world for thousands of years and are providing mankind with new remedies. The objective of this study was to determine the cytotoxicity of soursop (Anona muricata Linn) leaves and pearl grass (Hedyotis corymbosa (L.) Lam.) on the hormone-dependent human breast carcinoma Michigan Cancer Foundation-7 (MCF-7) cell line.
Objective: Breast cancer is a malignant disease of women most often found after cervical cancer i... more Objective: Breast cancer is a malignant disease of women most often found after cervical cancer in Indonesia. Increased levels of free radicals can cause DNA damage, which could lead to malignancy; this can play role in breast cancer etiopathogenesis. The present research was conducted to determine the activity of catechins as antioxidants and their potential efficacy in inhibiting breast cancer malignancy. Methods: The research was done by examining the antioxidant and free radical scavenging activity including 1,1-diphenyl-2-picryl-hydrazyl (DPPH), the value of superoxide dismutase (SOD), and assays in breast cancer cell lines (T47D, MCF7). The cytotoxic potency was determined by the MTS (3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium) assay. Results: The highest DPPH scavenging activity is presented by (-)-epigallocatechin (EGC) and the lowest by gallo catechins (GC). The highest SOD value were reached with EGC at 500 µg/ml, followed by (-)-epicatechin gallate (ECG) at 125 µg/ml, and GC at 31.25 µg/ml concentrations. The highest cytotoxic activity in T47D cell line for 24 and 48 h incubation was exhibited by (-)-gallocatechin gallate (GCG). The greatest cytotoxic activity in MCF7 cell line for 24 h was presented by (-)-epigallocatechin gallate (EGCG), and for 48 h incubation by (+)-catechin (C). Conclusion: Catechins have high antioxidant activities proven by both DPPH scavenging and SOD activities. They possess higher anticancer action on T47D than on MCF7 cell line.
Cancer is one the most common life-threatening diseases. Cancer cases worldwide are forecast to r... more Cancer is one the most common life-threatening diseases. Cancer cases worldwide are forecast to rise by 75% in the future. Although cancer therapies have been improved, many tumors remain unresponsive to conventional treatments, such as radiation and chemotherapy. Therefore, novel strategies in treating and managing the disease are urgently needed. Wharton's Jelly-derived mesenchymal stem cells (WJ-MSCs) have recently been shown to possess anti-cancer activities as well as tumor-homing ability. These cells are able to migrate to sites of neoplastic growth in vivo and their secretory products display tumoricidal activity both in vitro and in vivo models of human cancer. Recent reports also suggest that the anti-cancer potential of WJ-MSCs can also be enhanced through genetic engineering. This review will summarize the current understanding on the interactions between WJ-MSCs and tumor cells, as well as the potential use of both un-engineered and engineered WJ-MSCs as an anti-cancer agent.
Background: Obesity is considered an emergency health problem through out the world and is charac... more Background: Obesity is considered an emergency health problem through out the world and is characterized by an increase in the number and size of adipocytes in adipose tissue. Some phytochemical bioactive have been shown to inhibit adipocyte differentiation and induce adipocyte apoptosis. The Objective: In this ex vivo study, we evaluated the cytotoxic effects, antiobesity and antidiapogenesis potential of ethanol extract of Detam 1 soybean seed (EEDS), Jati Belanda Original Research Article Hidayat et al.; JSRR, 6(4): xxx-xxx, 2015; Article no.JSRR.2015.156 305 leaves (EEJB) and their combinations on 3T3-L1 cells. Experimental Approach: The cytotoxic effect of EEDS and EEJB were assayed using MTS assay. Triglyceride (TG) level and inhibitory activity were assayed using a TG assay kit. Glucose 6-phosphate dehydrogenase (G6PD) activity and inhibitory activity were determined by using G6PDH assay kit. The cholesterol level was measured according to the Chol Kit Randox protocol. Results: The lowest cytotoxic activity and safe substances on 3T3-L1 cell were EEDS and EEJB in 50 and 10 µg/ml of concentration. EEJB in the concentration of 50 µg/ml was the most active to inhibit G6PD, TG, and cholesterol activity with inhibition activities 47.30%, 37.93% and 73.91% respectively compared to the control (differentiated 3T3-L1 adipocyte). Conclusion: Ethanol extract of Detam 1 soybean seed and Jati Belanda leaves posses the inhibitory potential on G6PD, triglyceride and cholesterol activities in 3T3-L1 cell line and the most active compound showed by ethanol extract of Jati Belanda leaves.
This study was performed to elucidate the potential of human platelet lysate (huPL) as an alterna... more This study was performed to elucidate the potential of human platelet lysate (huPL) as an alternative to xeno-free media for culturing mesenchymal stem cells (MSCs). In this work, Wharton's jelly-derived MSCs (WJ-MSCs; n Z 5) were isolated, characterized, and cultured in huPL derived from type O platelets reconstituted with type AB platelet-poor plasma (huPLeABO). WJ-MSCs from five donors were cultured under two different conditions [cell culture supplemented with 20% fetal bovine serum (FBS) and 0.250 mg/mL, 0.125 mg/ mL, 0.063 mg/mL, and 0.031 mg/mL huPL]. Growth kinetics, cell surface markers, and in vitro differentiation potential toward the adipogenic, chondrogenic, and osteogenic line-ages were evaluated. Our results indicate that WJ-MSCs cultured in the presence of huPLeABO showed typical fibroblast-like morphology and had a significantly higher cell count (p < 0.05), compared with those cultured in FBS. Furthermore, results of immunophenotyping assay showed similar MSCs characteristics for both culture conditions. In addition, no significant differences were observed in the MSCs differentiation toward the adipogenic, chondrogenic, and osteogenic lineages. The optimal concentrations of huPLeABO in the culture medium were 0.250 mg/mL and 0.125 mg/mL. Because of insignificant differences between the concentrations in terms of WJ-MSCs population doubling time, the concentration of 0.125 mg/mL was used in all comparisons between FBS and huPLeABO. The average concentrations of insulin-like growth factor-1, platelet-derived growth factor-AB, vascular endothelial growth factor, and transforming growth factor-b1 in huPLeABO were 287.89 pg/mg, 47,096.63 pg/mg, Biomarkers and Genomic Medicine (2015) xx, 1e11 150.93 pg/mg, and 74,817.76 pg/mg, respectively. huPLeABO produced by this method was able to enhance the WJ-MSCs proliferation rate constantly and decrease the required time to reach confluence compared with the FBS culture condition.
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