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Shin D. Prediction of metabolic syndrome using machine learning approaches based on genetic and nutritional factors: a 14-year prospective-based cohort study. BMC Med Genomics 2024; 17:224. [PMID: 39232768 PMCID: PMC11373243 DOI: 10.1186/s12920-024-01998-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Accepted: 08/28/2024] [Indexed: 09/06/2024] Open
Abstract
INTRODUCTION Metabolic syndrome is a chronic disease associated with multiple comorbidities. Over the last few years, machine learning techniques have been used to predict metabolic syndrome. However, studies incorporating demographic, clinical, laboratory, dietary, and genetic factors to predict the incidence of metabolic syndrome in Koreans are limited. In the present study, we propose a genome-wide polygenic risk score for the prediction of metabolic syndrome, along with other factors, to improve the prediction accuracy of metabolic syndrome. METHODS We developed 7 machine learning-based models and used Cox multivariable regression, deep neural network (DNN), support vector machine (SVM), stochastic gradient descent (SGD), random forest (RAF), Naïve Bayes (NBA) classifier, and AdaBoost (ADB) to predict the incidence of metabolic syndrome at year 14 using the dataset from the Korean Genome and Epidemiology Study (KoGES) Ansan and Ansung. RESULTS Of the 5440 patients, 2,120 were considered to have new-onset metabolic syndrome. The AUC values of model, which included sex, age, alcohol intake, energy intake, marital status, education status, income status, smoking status, dried laver intake, and genome-wide polygenic risk score (gPRS) Z-score based on 344,447 SNPs (p-value < 1.0), were the highest for RAF (0.994 [95% CI 0.985, 1.000]) and ADB (0.994 [95% CI 0.986, 1.000]). CONCLUSIONS Incorporating both gPRS and demographic, clinical, laboratory, and seaweed data led to enhanced metabolic syndrome risk prediction by capturing the distinct etiologies of metabolic syndrome development. The RAF- and ADB-based models predicted metabolic syndrome more accurately than the NBA-based model for the Korean population.
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Affiliation(s)
- Dayeon Shin
- Department of Food and Nutrition, Inha University, Incheon, 22212, Republic of Korea.
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2
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Tao H, Chen Z, Yao B, Ren X, Shuai H, Xu S, Zha Q, Li P. Galaxamide alleviates cisplatin-induced premature ovarian insufficiency via the PI3K signaling pathway in HeLa tumor-bearing mice. BMC Cancer 2024; 24:1060. [PMID: 39192214 DOI: 10.1186/s12885-024-12848-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 08/23/2024] [Indexed: 08/29/2024] Open
Abstract
BACKGROUND It is challenging to improve the effects of chemotherapy and reduce its adverse impact on the ovaries. Our previous study suggested that the combination of galaxamide could enhance the antitumor effect of cisplatin (CIS) in HeLa cell xenograft mice. However, their potential effects on ovarian tissues remain unknown. METHODS The Hela tumor-bearing female BALB/c mice model was established and randomly divided into three groups: control group (PBS group), CIS group (0.3 mg/kg CIS group) and galaxamide group (0.3 mg/kg CIS + 3 mg/kg galaxamide-treated group). The serum sex hormones levels, ovarian morphology, functional and molecular characterisation were determined and compared with those of the control group. RESULTS The hormonal effects indicated premature ovarian insufficiency (POI) associated with CIS-induced tumor-bearing mice. CIS induces the apoptosis in primordial and developing follicles and subsequently increases follicular atresia, eventually leading to follicle loss. After cotreatment, galaxamide significantly increased anti-Mullerian hormone (AMH) and follicle-stimulating hormone receptor (FSHR) expression and prevented the CIS-induced PI3K pathway, which triggers follicle activation, apoptosis or atresia. CONCLUSION These findings demonstrate that galaxamide could attenuate CIS-induced follicle loss by acting on the PI3K signaling pathway by stimulating AMH and/or FSHR and thus provides promising therapeutic options for patients with cervical cancer.
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Affiliation(s)
- Huan Tao
- Center of Reproductive Medicine, First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
- Department of Pathology, Jinan University School of Medicine, Guangzhou, 510632, China
| | - Zongbin Chen
- Department of Gynecology & Obstetrics, First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
| | - Bo Yao
- Department of Pathology, Jinan University School of Medicine, Guangzhou, 510632, China
| | - Xinyi Ren
- Department of Pathology, Jinan University School of Medicine, Guangzhou, 510632, China
| | - Hanlin Shuai
- Department of Gynecology & Obstetrics, First Affiliated Hospital of Jinan University, Guangzhou, 510630, China
| | - Shihai Xu
- Department of Chemistry, College of Chemistry and Material Science, Jian University, Guangzhou, 510632, China.
| | - Qingbing Zha
- Center of Reproductive Medicine, First Affiliated Hospital of Jinan University, Guangzhou, 510630, China.
| | - Ping Li
- Department of Pathology, Jinan University School of Medicine, Guangzhou, 510632, China.
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André R, Pacheco R, Santos HM, Serralheiro ML. Exploring the Hypocholesterolemic Potential of a Fucus vesiculosus Extract: Omic Insights into Molecular Mechanisms at the Intestinal Level. Mar Drugs 2024; 22:187. [PMID: 38667804 PMCID: PMC11050770 DOI: 10.3390/md22040187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/18/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
High blood cholesterol levels are a major risk factor for cardiovascular diseases. A purified aqueous extract of Fucus vesiculosus, rich in phlorotannins and peptides, has been described for its potential to inhibit cholesterol biosynthesis and intestinal absorption. In this work, the effect of this extract on intestinal cells' metabolites and proteins was analysed to gain a deeper understanding of its mode of action on lipids' metabolism, particularly concerning the absorption and transport of exogenous cholesterol. Caco-2 cells, differentiated into enterocytes, were exposed to the extract, and analysed by untargeted metabolomics and proteomics. The results of the metabolomic analysis showed statistically significant differences in glutathione content of cells exposed to the extract compared to control cells, along with an increased expression of fatty acid amides in exposed cells. A proteomic analysis showed an increased expression in cells exposed to the extract compared to control cells of FAB1 and NPC1, proteins known to be involved in lipid metabolism and transport. To the extent of our knowledge, this study is the first use of untargeted metabolomics and a proteomic analysis to investigate the effects of F. vesiculosus on differentiated Caco-2 cells, offering insights into the molecular mechanism of the extract's compounds on intestinal cells.
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Affiliation(s)
- Rebeca André
- CBIOS—Research Center for Biosciences & Health Technologies, Universidade Lusófona, Campo Grande 376, 1749-024 Lisboa, Portugal
| | - Rita Pacheco
- Department of Chemical Engineering, ISEL—Instituto Superior de Engenharia de Lisboa, Rua Conselheiro Emídio Navarro, 1, 1959-007 Lisboa, Portugal
- Centro de Química Estrutural, Institute of Molecular Sciences, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Hugo M. Santos
- LAQV@REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal;
- PROTEOMASS Scientific Society, Madan Park, Rua dos Inventores, 2825-182 Caparica, Portugal
| | - Maria Luísa Serralheiro
- BioISI—Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal;
- Department of Chemistry and Biochemistry, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, C8 bldg, 1749-016 Lisboa, Portugal
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André R, Pacheco R, Alves AC, Santos HM, Bourbon M, Serralheiro ML. The Hypocholesterolemic Potential of the Edible Algae Fucus vesiculosus: Proteomic and Quantitative PCR Analysis. Foods 2023; 12:2758. [PMID: 37509850 PMCID: PMC10379601 DOI: 10.3390/foods12142758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/29/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
A brown seaweed consumed worldwide, Fucus vesiculosus, has been used to prevent atherosclerosis and hypercholesterolemia, among other uses. However, the mechanisms of action that lead to these effects are not yet fully understood. This work aims to study the in vitro effect of an aqueous extract of F. vesiculosus, previously characterized as rich in phlorotannins and peptides, on the expression of different proteins involved in the synthesis and transport of cholesterol. A proteomic analysis, Western blot, and qRT-PCR analysis were performed to identify protein changes in HepG2 cells exposed to 0.25 mg/mL of the F. vesiculosus extract for 24 h. The proteomic results demonstrated that, in liver cells, the extract decreases the expression of four proteins involved in the cholesterol biosynthesis process (CYP51A1, DHCR24, HMGCS1 and HSD17B7). Additionally, a 12.76% and 18.40% decrease in the expression of two important transporters proteins of cholesterol, NPC1L1 and ABCG5, respectively, was also observed, as well as a 30% decrease in NPC1L1 mRNA levels in the cells exposed to the extract compared to control cells. Our study reveals some of the mechanisms underlying the actions of bioactive compounds from F. vesiculosus that may explain its previously reported hypocholesterolemic effect, future prospecting its use as a functional food.
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Affiliation(s)
- Rebeca André
- BioISI-Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Rita Pacheco
- Department of Chemical Engineering, ISEL-Instituto Superior de Engenharia de Lisboa, Rua Conselheiro Emídio Navarro, 1, 1959-007 Lisboa, Portugal
- Centro de Química Estrutural, Institute of Molecular Sciences, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Ana Catarina Alves
- BioISI-Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
- Unidade de I&D, Grupo de Investigação Cardiovascular, Departamento de Promoção da Saúde e Prevenção de Doenças Não Transmissíveis, Instituto Nacional de Saúde Doutor Ricardo Jorge, 1649-016 Lisboa, Portugal
| | - Hugo M Santos
- LAQV@REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
- PROTEOMASS Scientific Society, Madan Park, Rúa dos Inventores, 2825-182 Caparica, Portugal
| | - Mafalda Bourbon
- BioISI-Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
- Unidade de I&D, Grupo de Investigação Cardiovascular, Departamento de Promoção da Saúde e Prevenção de Doenças Não Transmissíveis, Instituto Nacional de Saúde Doutor Ricardo Jorge, 1649-016 Lisboa, Portugal
| | - Maria Luísa Serralheiro
- BioISI-Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
- Department of Chemistry and Biochemistry, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, C8 Bldg, 1749-016 Lisboa, Portugal
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Barnard ND, Holtz DN, Schmidt N, Kolipaka S, Hata E, Sutton M, Znayenko-Miller T, Hazen ND, Cobb C, Kahleova H. Nutrition in the prevention and treatment of endometriosis: A review. Front Nutr 2023; 10:1089891. [PMID: 36875844 PMCID: PMC9983692 DOI: 10.3389/fnut.2023.1089891] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 01/31/2023] [Indexed: 02/19/2023] Open
Abstract
Endometriosis is characterized by the presence of endometrial tissues outside the uterine lining, typically on the external surface of the uterus, the ovaries, fallopian tubes, abdominal wall, or intestines. The prevalence of endometriosis in North America, Australia, and Europe is ~1-5% in women of reproductive age. Treatment options for endometriosis are limited. While over-the-counter medications may be used to reduce acute pain, hormonal treatments are common and may interfere with fertility. In more severe cases, laparoscopic excision procedures and even hysterectomies are used to treat the pain associated with endometriosis. Nutritional interventions may be helpful in the prevention and treatment of endometriosis and associated pain. Reducing dietary fat and increasing dietary fiber have been shown to reduce circulating estrogen concentrations, suggesting a potential benefit for individuals with endometriosis, as it is an estrogen-dependent disease. Meat consumption is associated with greater risk of developing endometriosis. Anti-inflammatory properties of plant-based diets may benefit women with endometriosis. Additionally, seaweed holds estrogen-modulating properties that have benefitted postmenopausal women and offers potential to reduce estradiol concentrations in pre-menopausal women. Furthermore, consumption of vitamin D has been shown to reduce endometrial pain via increased antioxidant capacity and supplementation with vitamins C and E significantly reduced endometriosis symptoms, compared with placebo. More randomized clinical trials are needed to elucidate the role of diet in endometriosis.
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Affiliation(s)
- Neal D. Barnard
- Department of Clinical Research, Physicians Committee for Responsible Medicine, Washington, DC, United States
- Adjunct Faculty, George Washington University School of Medicine and Health Sciences, Washington, DC, United States
| | - Danielle N. Holtz
- Department of Clinical Research, Physicians Committee for Responsible Medicine, Washington, DC, United States
| | - Natalie Schmidt
- Department of Clinical Research, Physicians Committee for Responsible Medicine, Washington, DC, United States
- Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, United States
| | - Sinjana Kolipaka
- Department of Clinical Research, Physicians Committee for Responsible Medicine, Washington, DC, United States
- Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, United States
| | - Ellen Hata
- Department of Clinical Research, Physicians Committee for Responsible Medicine, Washington, DC, United States
- Milken Institute School of Public Health George Washington University, Washington, DC, United States
| | - Macy Sutton
- Department of Clinical Research, Physicians Committee for Responsible Medicine, Washington, DC, United States
| | - Tatiana Znayenko-Miller
- Department of Clinical Research, Physicians Committee for Responsible Medicine, Washington, DC, United States
| | - Nicholas D. Hazen
- Department of Obstetrics and Gynecology, Medstar Georgetown University Hospital, Washington, DC, United States
| | - Christie Cobb
- Department of Obstetrics and Gynecology, Baptist Health Medical Center, Little Rock, AR, United States
| | - Hana Kahleova
- Department of Clinical Research, Physicians Committee for Responsible Medicine, Washington, DC, United States
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Relationship between seaweeds consumption and hyperuricaemia in general adults: a Population-based study from the Tianjin Chronic Low-grade Systemic Inflammation and Health (TCLSIH) cohort study. Br J Nutr 2021; 127:369-376. [PMID: 33715651 DOI: 10.1017/s0007114521000891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Seaweeds have numerous biologically active ingredients, such as polysaccharides, polyphenols and carotenoids, that are beneficial to human health. Although these benefits might be related to the synthesis, secretion or reabsorption of uric acid, no studies have explored the relationship between seaweeds consumption and hyperuricaemia (HUA) in the general population. The aim of this study was to investigate whether seaweeds consumption is related to HUA in a large-scale adult population. A cross-sectional study was conducted with 32 365 adults (17 328 men and 15 037 women) in Tianjin, People's Republic of China. Frequency of seaweeds consumption was assessed by a validated self-administered FFQ. HUA was defined as serum uric acid levels >420 μmol/L in men and >350 μmol/L in women. The association between seaweeds consumption and HUA was assessed by multiple logistic regression analysis. Restricted cubic spline functions were used for non-linearity tests. The prevalence of HUA in men and women was 21·17 % and 5·93 %, respectively. After adjustments for potential confounding factors, the OR (95 % CI) for HUA across seaweed consumption (g/1000 kcal per d) were 1·00 (reference) for level 1, 0·91 (95 % CI 0·81, 1·02) for level 2; 0·90 (95 % CI 0·81, 1·01) for level 3; 0·86 (95 % CI 0·78, 0·97) for level 4 in men and 0·90 (95 % CI 0·73, 1·10) for level 2; 0·82 (95 % CI 0·67, 1·00) for level 3; 0·84 (95 % CI 0·68, 1·03) for level 4 in women, respectively. A negative correlation between seaweeds consumption and HUA in males but not in females was observed. Further studies are needed to explore the causal relationship.
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Ugwah-Oguejiofor CJ, Okoli CO, Ugwah MO, Okolo RU, Bello SO. Assessment of reproductive impact of the aerial parts of Caralluma dalzielii N. E. Br in female Wistar rats. Heliyon 2020; 6:e05199. [PMID: 33102839 PMCID: PMC7575800 DOI: 10.1016/j.heliyon.2020.e05199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 06/24/2020] [Accepted: 10/06/2020] [Indexed: 11/29/2022] Open
Abstract
Caralluma dalzielii N. E. Brown belonging to family Asclepiadaceae, is a popular cactus-shaped plant native to East Africa. The aerial parts are used traditionally for treating various diseases including infertility. The present study evaluated the effects of the aqueous extract of the aerial parts of Caralluma dalzielii (AECD) on reproductive performance of female Wistar rats. Adult female virgin rats were allotted into four major groups namely pre-conception, post-conception, implantation site and ovariectomized rats' groups. Each group was subdivided into 4 groups and treated orally with 125, 250, 500 mg/kg of AECD or distilled water (vehicle). In the pre-conception and post-conception groups, litter sizes, pups' weights, deformities, gestation length and reproductive indices were determined. Number of implantation sites and weights of embryos were assessed in the implantation site group while in the ovariectomised rats' group, uterine weights were determined. AECD produced no difference in litter size and reproductive indices in pre-conception group while in post-conception group the litter size at 500 mg/kg was significantly (p < 0.05) reduced compared to the control. Post-implantation loss index was high, and the other reproductive indices were reduced at 500 mg/kg. Whereas at the dose of 125 mg/kg, post-implantation loss index was reduced, and litter size was increased when compared to the control group. At 500 mg/kg, AECD caused a significant (p < 0.05) decrease in the number of implantation sites and weight of embryos while at 125 mg/kg the implantation sites increased. A significant (p < 0.05) increase in the uterine weight in the ovariectomised rats' group was observed at all dose levels. Our study provides scientific evidence that supports the traditional use of AECD in the treatment of infertility. At a lower dose, AECD acts by increasing the number of implantation sites and litter size of animals but at a higher dose, it may be embryotoxic. AECD increases uterine wet weight in ovariectomised rats suggesting that the plant may be oestrogen-like.
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Affiliation(s)
- Chinenye J. Ugwah-Oguejiofor
- Department of Pharmacology & Toxicology, Faculty of Pharmaceutical Sciences, Usmanu Danfodiyo University, P.M.B. 2346, Sokoto, Nigeria
- Corresponding author.
| | - Charles O. Okoli
- Department of Pharmacology & Toxicology, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, Enugu, Nigeria
| | - Michael O. Ugwah
- Department of Pharmacy, Usmanu Danfodiyo University Teaching Hospital, P.M.B. 2346, Sokoto, Nigeria
| | - Ray U. Okolo
- Department of Anatomical Sciences, Faculty of Basic Medical Sciences, College of Health Sciences, University of Abuja, Abuja, Nigeria
| | - Shuaibu O. Bello
- Department of Pharmacology and Therapeutics, College of Health Sciences, Usmanu Danfodiyo University, P.M.B. 2346, Sokoto, Nigeria
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André R, Guedes L, Melo R, Ascensão L, Pacheco R, Vaz PD, Serralheiro ML. Effect of Food Preparations on In Vitro Bioactivities and Chemical Components of Fucus vesiculosus. Foods 2020; 9:foods9070955. [PMID: 32708417 PMCID: PMC7404634 DOI: 10.3390/foods9070955] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/06/2020] [Accepted: 07/15/2020] [Indexed: 12/13/2022] Open
Abstract
Fucus vesiculosus is a brown macroalgae used in food and generally considered safe to be consumed, according to EU Directive (EC 258/97). The aim of this study is to analyze the effect of food preparation on F.vesiculosus of different origins on what concerns its chemical constituents and final bioactivities. The aqueous extract of the seaweeds were obtained at different temperatures, similar to food preparation and then purified by SPE. The compound identification was carried out by Liquid Chromatography High Resolution Mass Spectrometry (LC-HRMS/MS) and algae extracts microstructure were observed by Scanning Electron Microscopy (SEM). The activities were determined by using antioxidant activity, inhibition of acetylcholinesterase (AChE) and 3-hidroxi-3-methyl-glutaril-CoA (HMG-CoA) reductase (HMGR) together with Caco-2 cells line simulating the intestinal barrier. The activity of AChE and the HMGR were inhibited by the extracts giving IC50 values of 15.0 ± 0.1 µg/mL and 4.2 ± 0.1 µg/mL, respectively and 45% of the cholesterol permeation inhibition. The main compounds identified were phlorotannins and peptides derivatives. The mode of preparation significantly influenced the final bioactivities. Moreover, the in vitro results suggest that the preparation of F. vesiculosus as a soup could have hypercholesterolemia lowering effect.
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Affiliation(s)
- Rebeca André
- BioISI—Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal; (R.A.); (L.G.); (R.P.)
| | - Laura Guedes
- BioISI—Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal; (R.A.); (L.G.); (R.P.)
| | - Ricardo Melo
- Marine and Environmental Sciences Centre (MARE), Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal;
| | - Lia Ascensão
- Centre for Environmental and Marine Studies (CESAM) Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal;
| | - Rita Pacheco
- BioISI—Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal; (R.A.); (L.G.); (R.P.)
- Department of Chemical Engineering, ISEL—Instituto Superior de Engenharia de Lisboa, Rua Conselheiro Emídio Navarro, 1, 1959-007 Lisboa, Portugal
| | - Pedro D. Vaz
- Champalimaud Foundation, Champalimaud Centre for the Unknown, 1400-038 Lisboa, Portugal;
| | - Maria Luísa Serralheiro
- BioISI—Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal; (R.A.); (L.G.); (R.P.)
- Department of Chemistry and Biochemistry, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, C8 bldg, 1749-016 Lisboa, Portugal
- Correspondence: ; Tel.: +351-21-750-0935
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Nuñez-Olvera SI, Gallardo-Rincón D, Puente-Rivera J, Salinas-Vera YM, Marchat LA, Morales-Villegas R, López-Camarillo C. Autophagy Machinery as a Promising Therapeutic Target in Endometrial Cancer. Front Oncol 2019; 9:1326. [PMID: 31850214 PMCID: PMC6896250 DOI: 10.3389/fonc.2019.01326] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 11/13/2019] [Indexed: 01/01/2023] Open
Abstract
Endometrial cancer is the fourth most frequent neoplasia for women worldwide, and over the past two decades it incidence has increased. The most common histological type of endometrial cancer is endometrioid adenocarcinoma, also known as type 1 endometrial cancer. Endometrioid endometrial cancer is associated with diverse epidemiological risk factors including estrogen use, obesity, diabetes, cigarette smoking, null parity, early menarche, and late menopause. Clinical effectiveness of chemotherapy is variable, indicating that novel molecular therapies against specific cellular processes associated to cell survival and resistance to therapy, such as autophagy, urged to ameliorate the rates of success in endometrial cancer treatment. Autophagy (also known as macroautophagy) is a specialized mechanism that maintains cell homeostasis which is activated in response to cellular stressors including nutrients deprivation, amino acids starvation, hypoxia, and metabolic stress to prolong cell survival via lysosomal degradation of cytoplasmic macromolecules and organelles. However, in human cancer cells, autophagy has a controversial function due to its dual role as self-protective or apoptotic. Conventional antitumor therapies including hormones, chemotherapy and ionizing radiation, may activate autophagy as a pro-survival tumor response contributing to treatment resistance. Intriguingly, if autophagy continues above reversibility of cell viability, autophagy can result in apoptosis of tumor cells. Here, we have reviewed the mechanisms of autophagy described in endometrial cancers, including the role of PI3K/AKT/mTOR, AMPK-mTOR, and p53 signaling pathways that trigger or inhibit the process and thus representing potential molecular targets in therapeutic clinical approaches. In addition, we discussed the recent findings indicating that autophagy can be modulated using repurposing drugs which may leads to faster experimentation and validation, as well as more easy access of the medications to patients. Finally, the promising role of dietary compounds and microRNAs in autophagy modulation is also discussed. In conclusion, although the research about autophagy is scarce but ongoing in endometrial cancer, the actual findings highlight the promising usefulness of novel molecules for directing targeted therapies.
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Affiliation(s)
| | - Dolores Gallardo-Rincón
- Laboratorio de Medicina Translacional, Instituto Nacional de Cancerología, Mexico City, Mexico
| | - Jonathan Puente-Rivera
- Departamento de Ecología Funcional, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Yarely M. Salinas-Vera
- Posgrado en Ciencias Genómicas, Universidad Autónoma de la Ciudad de México, Mexico City, Mexico
| | - Laurence A. Marchat
- Programa en Biomedicina Molecular y Red de Biotecnología, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Raúl Morales-Villegas
- Coordinación Académica Huasteca del Sur, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - César López-Camarillo
- Posgrado en Ciencias Genómicas, Universidad Autónoma de la Ciudad de México, Mexico City, Mexico
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Ramadan MM, Asran-Amal, Almoammar H, Abd-Elsalam KA. Microbially Synthesized Biomagnetic Nanomaterials. NANOTECHNOLOGY IN THE LIFE SCIENCES 2019:49-75. [DOI: 10.1007/978-3-030-16439-3_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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11
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Alves C, Silva J, Pinteus S, Gaspar H, Alpoim MC, Botana LM, Pedrosa R. From Marine Origin to Therapeutics: The Antitumor Potential of Marine Algae-Derived Compounds. Front Pharmacol 2018; 9:777. [PMID: 30127738 PMCID: PMC6089330 DOI: 10.3389/fphar.2018.00777] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 06/26/2018] [Indexed: 11/13/2022] Open
Abstract
Marine environment has demonstrated to be an interesting source of compounds with uncommon and unique chemical features on which the molecular modeling and chemical synthesis of new drugs can be based with greater efficacy and specificity for the therapeutics. Cancer is a growing public health threat, and despite the advances in biomedical research and technology, there is an urgent need for the development of new anticancer drugs. In this field, it is estimated that more than 60% of commercially available anticancer drugs are natural biomimetic inspired. Among the marine organisms, algae have revealed to be one of the major sources of new compounds of marine origin, including those exhibiting antitumor and cytotoxic potential. These compounds demonstrated ability to mediate specific inhibitory activities on a number of key cellular processes, including apoptosis pathways, angiogenesis, migration and invasion, in both in vitro and in vivo models, revealing their potential to be used as anticancer drugs. This review will focus on the bioactive molecules from algae with antitumor potential, from their origin to their potential uses, with special emphasis to the alga Sphaerococcus coronopifolius as a producer of cytotoxic compounds.
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Affiliation(s)
- Celso Alves
- MARE - Marine and Environmental Sciences Centre, ESTM, Polytechnic Institute of Leiria, Peniche, Portugal.,Biology Department, DoMar Doctoral Programme on Marine Science, Technology and Management, University of Aveiro, Aveiro, Portugal
| | - Joana Silva
- MARE - Marine and Environmental Sciences Centre, ESTM, Polytechnic Institute of Leiria, Peniche, Portugal
| | - Susete Pinteus
- MARE - Marine and Environmental Sciences Centre, ESTM, Polytechnic Institute of Leiria, Peniche, Portugal
| | - Helena Gaspar
- MARE - Marine and Environmental Sciences Centre, ESTM, Polytechnic Institute of Leiria, Peniche, Portugal.,Faculty of Sciences, BioISI - Biosystems and Integrative Sciences Institute, University of Lisboa, Lisbon, Portugal
| | - Maria C Alpoim
- Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal.,Center of Investigation in Environment, Genetics and Oncobiology, University of Coimbra, Coimbra, Portugal.,Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Luis M Botana
- Departament of Pharmacology, Faculty of Veterinary, University of Santiago de Compostela, Lugo, Spain
| | - Rui Pedrosa
- MARE - Marine and Environmental Sciences Centre, ESTM, Polytechnic Institute of Leiria, Peniche, Portugal
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12
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Ito M, Koba K, Hikihara R, Ishimaru M, Shibata T, Hatate H, Tanaka R. Analysis of functional components and radical scavenging activity of 21 algae species collected from the Japanese coast. Food Chem 2018; 255:147-156. [PMID: 29571460 DOI: 10.1016/j.foodchem.2018.02.070] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 01/25/2018] [Accepted: 02/13/2018] [Indexed: 11/26/2022]
Abstract
The functional chemical substances and the antioxidant activity of lipids in 21 marine algae along the Japanese coast were investigated. Principal component analysis was performed to detect any correlation between the chemical substances and algae phylum. Chlorophyta contained a high level of β-carotene. Rhodophyta contained high amounts of cholesterol, β-sitosterol, and saturated fatty acids. Phaeophyta were rich in fucosterol, α-tocopherol, fucoxanthin, and polyphenol. Phaeophyta algae also showed the highest antioxidant activity compared with other phylum. This suggests that Phaeophyta has the greatest potential to be used as a functional food. Consumption of the beneficial Phaeophyta species, such as Eisenia arborea Areschoug and Ecklonia cava Kjellman should be encouraged as not only as food products but also as nutraceuticals and dietary supplements. These beneficial ingredients should be encouraged to be studied in depth with the possibility to develop specific formulated products target to special consumer's population with added nutritional value.
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Affiliation(s)
- Meiko Ito
- Graduate School of Agriculture, University of Miyazaki, Gakuen-kibanadai-nishi-1-1, Miyazaki 889-2192, Japan
| | - Kaisei Koba
- Department of Marine Biology and Environmental Sciences, Faculty of Agriculture, University of Miyazaki, Gakuen-kibanadai-nishi-1-1, Miyazaki 889-2192, Japan
| | - Risako Hikihara
- Department of Marine Biology and Environmental Sciences, Faculty of Agriculture, University of Miyazaki, Gakuen-kibanadai-nishi-1-1, Miyazaki 889-2192, Japan
| | - Mami Ishimaru
- Interdisciplinary Graduate School of Agriculture and Engineering, University of Miyazaki, Gakuen-kibanadai-nishi-1-1, Miyazaki 889-2192, Japan
| | - Toshiyuki Shibata
- Graduate School of Bioresources, Mie University, 1577 Kurimamachiya-cho, Tsu, Mie 514-8507, Japan; Seaweed Biorefinery Research Center, Mie University, 1577 Kurimamachiya-cho, Tsu, Mie 514-8507, Japan
| | - Hideo Hatate
- Department of Marine Biology and Environmental Sciences, Faculty of Agriculture, University of Miyazaki, Gakuen-kibanadai-nishi-1-1, Miyazaki 889-2192, Japan
| | - Ryusuke Tanaka
- Department of Marine Biology and Environmental Sciences, Faculty of Agriculture, University of Miyazaki, Gakuen-kibanadai-nishi-1-1, Miyazaki 889-2192, Japan.
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13
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Oliveira RM, Câmara RBG, Monte JFS, Viana RLS, Melo KRT, Queiroz MF, Filgueira LGA, Oyama LM, Rocha HAO. Commercial Fucoidans from Fucus vesiculosus Can Be Grouped into Antiadipogenic and Adipogenic Agents. Mar Drugs 2018; 16:E193. [PMID: 29867001 PMCID: PMC6025566 DOI: 10.3390/md16060193] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 05/20/2018] [Accepted: 05/25/2018] [Indexed: 02/07/2023] Open
Abstract
Fucus vesiculosus is a brown seaweed used in the treatment of obesity. This seaweed synthesizes various bioactive molecules, one of them being a sulfated polysaccharide known as fucoidan (FF). This polymer can easily be found commercially, and has antiadipogenic and lipolytic activity. Using differential precipitation with acetone, we obtained four fucoidan-rich fractions (F0.5/F0.9/F1.1/F2.0) from FF. These fractions contain different proportions of fucose:glucuronic acid:galactose:xylose:sulfate, and also showed different electrophoretic mobility and antioxidant activity. Using 3T3-L1 adipocytes, we found that all samples had lipolytic action, especially F2.0, which tripled the amount of glycerol in the cellular medium. Moreover, we observed that FF, F1.0, and F2.0 have antiadipogenic activity, as they inhibited the oil red staining by cells at 40%, 40%, and 50%, respectively. In addition, they decreased the expression of key proteins of adipogenic differentiation (C/EBPα, C/EBPβ, and PPARγ). However, F0.5 and F0.9 stimulated the oil red staining at 80% and increased the expression of these proteins. Therefore, these fucoidan fractions have an adipogenic effect. Overall, the data show that F2.0 has great potential to be used as an agent against obesity as it displays better antioxidant, lipolytic and antiadipogenic activities than the other fucoidan fractions that we tested.
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Affiliation(s)
- Ruth Medeiros Oliveira
- Departamento de Bioquímica, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte 59.078-970, Brazil.
- Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte, Caicó, Rio Grande do Norte 59.300-000, Brazil.
| | - Rafael Barros Gomes Câmara
- Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte, Caicó, Rio Grande do Norte 59.300-000, Brazil.
- Escola Multicampi de Ciências Médicas, Universidade Federal do Rio Grande do Norte, Caicó, Rio Grande do Norte 59.300-000, Brazil.
| | | | - Rony Lucas Silva Viana
- Departamento de Bioquímica, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte 59.078-970, Brazil.
| | - Karoline Rachel Teodosio Melo
- Departamento de Bioquímica, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte 59.078-970, Brazil.
| | - Moacir Fernandes Queiroz
- Departamento de Bioquímica, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte 59.078-970, Brazil.
| | | | - Lila Missae Oyama
- Departamento de Fisiologia, Universidade Federal de São Paulo-Escola Paulista de Medicina, São Paulo 04023-060, Brazil.
| | - Hugo Alexandre Oliveira Rocha
- Departamento de Bioquímica, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte 59.078-970, Brazil.
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14
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Pinteus S, Silva J, Alves C, Horta A, Thomas OP, Pedrosa R. Antioxidant and Cytoprotective Activities of Fucus spiralis Seaweed on a Human Cell in Vitro Model. Int J Mol Sci 2017; 18:E292. [PMID: 28146076 PMCID: PMC5343828 DOI: 10.3390/ijms18020292] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 01/19/2017] [Accepted: 01/24/2017] [Indexed: 12/17/2022] Open
Abstract
Antioxidants play an important role as Reactive Oxygen Species (ROS) chelating agents and, therefore, the screening for potent antioxidants from natural sources as potential protective agents is of great relevance. The main aim of this study was to obtain antioxidant-enriched fractions from the common seaweed Fucus spiralis and evaluate their activity and efficiency in protecting human cells (MCF-7 cells) on an oxidative stress condition induced by H₂O₂. Five fractions, F1-F5, were obtained by reversed-phase vacuum liquid chromatography. F3, F4 and F5 revealed the highest phlorotannin content, also showing the strongest antioxidant effects. The cell death induced by H₂O₂ was reduced by all fractions following the potency order F4 > F2 > F3 > F5 > F1. Only fraction F4 completely inhibited the H₂O₂ effect. To understand the possible mechanisms of action of these fractions, the cellular production of H₂O₂, the mitochondrial membrane potential and the caspase 9 activity were studied. Fractions F3 and F4 presented the highest reduction on H₂O₂ cell production. All fractions decreased both caspase-9 activity and cell membrane depolarization (except F1). Taken all together, the edible F. spiralis reveal that they provide protection against oxidative stress induced by H₂O₂ on the human MCF-7 cellular model, probably acting as upstream blockers of apoptosis.
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Affiliation(s)
- Susete Pinteus
- MARE-Marine and Environmental Sciences Centre, School of Tourism and Maritime Technology, Polytechnic Institute of Leiria, 2520-641 Peniche, Portugal.
| | - Joana Silva
- MARE-Marine and Environmental Sciences Centre, School of Tourism and Maritime Technology, Polytechnic Institute of Leiria, 2520-641 Peniche, Portugal.
| | - Celso Alves
- MARE-Marine and Environmental Sciences Centre, School of Tourism and Maritime Technology, Polytechnic Institute of Leiria, 2520-641 Peniche, Portugal.
| | - André Horta
- MARE-Marine and Environmental Sciences Centre, School of Tourism and Maritime Technology, Polytechnic Institute of Leiria, 2520-641 Peniche, Portugal.
| | - Olivier P Thomas
- Marine Biodiscovery, School of Chemistry, National University of Ireland Galway, University Road, H91TK33 Galway, Ireland.
| | - Rui Pedrosa
- MARE-Marine and Environmental Sciences Centre, School of Tourism and Maritime Technology, Polytechnic Institute of Leiria, 2520-641 Peniche, Portugal.
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15
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Zhang J, Riby JE, Conde L, Grizzle WE, Cui X, Skibola CF. A Fucus vesiculosus extract inhibits estrogen receptor activation and induces cell death in female cancer cell lines. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 16:151. [PMID: 27234961 PMCID: PMC4884380 DOI: 10.1186/s12906-016-1129-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Accepted: 05/18/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND We previously reported the anti-estrogenic activity of the brown seaweed, Fucus vesiculosus. The present study aimed to further investigate its anti-estrogenic modes of action and to assess other potentially biologically relevant anti-tumorigenic effects in estrogen receptor (ER)-dependent and -independent female cancer cell lines. METHODS The CALUX® assay was used to determine the effect of a F. vesiculosus extract (FVE) on activation of the ER. Aromatase enzymatic activity was measured to determine the potential effect of FVE on estradiol (E2) biosynthesis. Transcriptional activity profiling of 248 genes involved in cancer, immunity, hormonal regulation, protein phosphorylation, transcription, metabolism, and cellular structure was conducted using the NanoString nCounter® analysis system in FVE-treated breast, ovarian and endometrial cancer cell lines. The effects of FVE on cell viability, morphology, membrane integrity, mitochondrial toxicity, induction of apoptotic and autophagic markers, and cell signaling were also analyzed. RESULTS In co-treatments with 12.5 pM (EC50) E2, FVE (2 %) reduced ER activation by 50 %, exhibiting potent ER antagonistic effects. FVE inhibited aromatase activity in an in vitro assay (IC50 2.0 %). ER-dependent and -independent cancer cell lines showed significantly decreased viability that correlated with increasing FVE concentrations and altered morphological features suggestive of apoptosis and autophagy. Expression of genes that were significantly altered by FVE (p < 0.05) revealed predominantly apoptotic, autophagic and kinase signaling pathways. FVE also effectively inhibited the phosphorylation of Akt, resulting in reduced mTORC1 activities to stimulate autophagy in cells. Concentration-dependent cleavage of PARP and induction of caspase-3 and -7 activities were observed in MDA-MB-231 cells supporting a role for FVE in the promotion of apoptosis. CONCLUSIONS Our study provides new insights into the anti-estrogenic activity of F. vesiculosus. Moreover, the induction of autophagy and apoptosis on breast, endometrial and ovarian cancer cell lines suggests additional anti-tumorigenic actions of FVE that are independent of ER status in female cancers.
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Affiliation(s)
- Jianqing Zhang
- Department of Epidemiology, University of Alabama at Birmingham, 1665 University Boulevard, Birmingham, AL, 35294, USA
- The UAB Comprehensive Cancer Center, University of Alabama at Birmingham, 1824 6th Avenue South, Birmingham, 35233, AL, USA
| | - Jacques E Riby
- Department of Epidemiology, University of Alabama at Birmingham, 1665 University Boulevard, Birmingham, AL, 35294, USA
- The UAB Comprehensive Cancer Center, University of Alabama at Birmingham, 1824 6th Avenue South, Birmingham, 35233, AL, USA
| | - Lucia Conde
- Department of Epidemiology, University of Alabama at Birmingham, 1665 University Boulevard, Birmingham, AL, 35294, USA
| | - William E Grizzle
- Department of Pathology, University of Alabama at Birmingham School of Medicine, Birmingham, 35294, AL, USA
- The UAB Comprehensive Cancer Center, University of Alabama at Birmingham, 1824 6th Avenue South, Birmingham, 35233, AL, USA
| | - Xiangqin Cui
- Department of Biostatistics, University of Alabama at Birmingham School of Medicine, Birmingham, 35294, AL, USA
| | - Christine F Skibola
- Department of Epidemiology, University of Alabama at Birmingham, 1665 University Boulevard, Birmingham, AL, 35294, USA.
- The UAB Comprehensive Cancer Center, University of Alabama at Birmingham, 1824 6th Avenue South, Birmingham, 35233, AL, USA.
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16
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Seaweed (Eucheuma cottonii) reduced inflammation, mucin synthesis, eosinophil infiltration and MMP-9 expressions in asthma-induced rats compared to Loratadine. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.10.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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17
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Abbaspour B, Davood SS, Mohammadi-Sangcheshmeh A. Dietary supplementation of Gracilariopsis persica is associated with some quality related sera and egg yolk parameters in laying quails. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:643-648. [PMID: 25061008 DOI: 10.1002/jsfa.6844] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Revised: 07/19/2014] [Accepted: 07/22/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Gracilariopsis persica (Gp) is one of the most abundant red algae distributed in the Persian Gulf, containing various bioactive components with hypolipedimic, hypoglycemic and antioxidant properties. Therefore using laying quails as a model we aimed to investigate the effect of dietary Gp on body weight, feed conversion, estradiol, progesterone, calcium and lipid levels in serum, as well as the high-density:low-density lipoprotein (HDL:LDL) ratio. Yolk cholesterol and yolk lipid oxidation were also evaluated. To accomplish this, diets containing 0, 10, 30 and 50 g kg(-1) Gp were fed to 5-week-old laying quails for 12 weeks. RESULTS Our data revealed that Gp had no effect on body weight, feed conversion, triglycerides and estradiol levels of serum. Dietary Gp decreased the serum and yolk cholesterol in a dose-dependent manner. In addition, the sera progesterone and calcium levels and HDL:LDL ratios were increased by feeding diets containing 50 g kg(-1) Gp. Our results relating to yolk lipid oxidation showed that malondialdehyde content was decreased in Gp-fed laying quails. CONCLUSIONS The results of the present study demonstrate that not only serum and egg yolk cholesterol levels, but also susceptibility of yolk lipids to oxidation, can be decreased by feeding Gp to laying quails.
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Affiliation(s)
- Behnam Abbaspour
- Department of Animal and Poultry Science, College of Abouraihan, University of Tehran, Pakdasht, 3391-653755, Tehran, Iran
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18
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Brown EM, Allsopp PJ, Magee PJ, Gill CIR, Nitecki S, Strain CR, McSorley EM. Seaweed and human health. Nutr Rev 2014; 72:205-16. [DOI: 10.1111/nure.12091] [Citation(s) in RCA: 227] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Affiliation(s)
- Emma M Brown
- Northern Ireland Centre for Food and Health; University of Ulster; County Londonderry UK
| | - Philip J Allsopp
- Northern Ireland Centre for Food and Health; University of Ulster; County Londonderry UK
| | - Pamela J Magee
- Northern Ireland Centre for Food and Health; University of Ulster; County Londonderry UK
| | - Chris IR Gill
- Northern Ireland Centre for Food and Health; University of Ulster; County Londonderry UK
| | - Sonja Nitecki
- Northern Ireland Centre for Food and Health; University of Ulster; County Londonderry UK
| | - Conall R Strain
- Northern Ireland Centre for Food and Health; University of Ulster; County Londonderry UK
| | - Emeir M McSorley
- Northern Ireland Centre for Food and Health; University of Ulster; County Londonderry UK
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19
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Namvar F, Tahir PM, Mohamad R, Mahdavi M, Abedi P, Najafi TF, Rahman HS, Jawaid M. Biomedical Properties of Edible Seaweed in Cancer Therapy and Chemoprevention Trials: A Review. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300801237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This review article summarizes in vitro and in vivo experiments on seaweed anticancer activity and seaweed chemical components. Seaweed use in cancer therapy, chemopreventive randomized control trials (RCTs) and quasi-experiments are discussed. The literature reviewed in this article was obtained from various scientific sources and encompasses publications from 2000–2012. Seaweed therapeutic effects were deemed scientifically plausible and may be partially explained by the in vivo and in vitro pharmacological studies described. Although the mechanisms of action remain unclear, seaweed's anticancer properties may be attributable to its major biologically active metabolites. Much of the seaweed research outlined in this paper can serve as a foundation for explaining seaweed anticancer bioactivity. This review will open doors for developing strategies to treat malignancies using seaweed natural products.
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Affiliation(s)
- Farideh Namvar
- Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
- Department of Medicine, Applied Biology Research Center, Mashhad Branch, Islamic Azad University, Mashhad Iran
| | - Paridah Md. Tahir
- Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Rosfarizan Mohamad
- Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
- Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | | | - Parvin Abedi
- Reproductive Health Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Tahereh Fathi Najafi
- Department of Medicine, Applied Biology Research Center, Mashhad Branch, Islamic Azad University, Mashhad Iran
| | - Heshu Sulaiman Rahman
- Department of Microbiology and Pathology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Mohammad Jawaid
- Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
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Garber JR, Cobin RH, Gharib H, Hennessey JV, Klein I, Mechanick JI, Pessah-Pollack R, Singer PA, Woeber KA. Clinical practice guidelines for hypothyroidism in adults: cosponsored by the American Association of Clinical Endocrinologists and the American Thyroid Association. Endocr Pract 2013; 18:988-1028. [PMID: 23246686 DOI: 10.4158/ep12280.gl] [Citation(s) in RCA: 611] [Impact Index Per Article: 55.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Hypothyroidism has multiple etiologies and manifestations. Appropriate treatment requires an accurate diagnosis and is influenced by coexisting medical conditions. This paper describes evidence-based clinical guidelines for the clinical management of hypothyroidism in ambulatory patients. METHODS The development of these guidelines was commissioned by the American Association of Clinical Endocrinologists (AACE) in association with American Thyroid Association (ATA). AACE and the ATA assembled a task force of expert clinicians who authored this article. The authors examined relevant literature and took an evidence-based medicine approach that incorporated their knowledge and experience to develop a series of specific recommendations and the rationale for these recommendations. The strength of the recommendations and the quality of evidence supporting each was rated according to the approach outlined in the American Association of Clinical Endocrinologists Protocol for Standardized Production of Clinical Guidelines-2010 update. RESULTS Topics addressed include the etiology, epidemiology, clinical and laboratory evaluation, management, and consequences of hypothyroidism. Screening, treatment of subclinical hypothyroidism, pregnancy, and areas for future research are also covered. CONCLUSIONS Fifty-two evidence-based recommendations and subrecommendations were developed to aid in the care of patients with hypothyroidism and to share what the authors believe is current, rational, and optimal medical practice for the diagnosis and care of hypothyroidism. A serum thyrotropin is the single best screening test for primary thyroid dysfunction for the vast majority of outpatient clinical situations. The standard treatment is replacement with L-thyroxine. The decision to treat subclinical hypothyroidism when the serum thyrotropin is less than 10 mIU/L should be tailored to the individual patient.
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Affiliation(s)
- Jeffrey R Garber
- Endocrine Division, Harvard Vanguard Medical Associates, Boston, Massachusetts 02215, USA.
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21
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Rodrigues M, Alves G, Abrantes J, Falcão A. Herb-drug interaction of Fucus vesiculosus extract and amiodarone in rats: a potential risk for reduced bioavailability of amiodarone in clinical practice. Food Chem Toxicol 2013; 52:121-8. [PMID: 23178632 DOI: 10.1016/j.fct.2012.11.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 10/24/2012] [Accepted: 11/08/2012] [Indexed: 11/17/2022]
Abstract
Fucus vesiculosus is a seaweed claimed to be useful for obesity management. Therefore, considering the relationship between obesity and cardiovascular diseases, this work aimed to assess the potential for an herb-drug interaction among a standardized F. vesiculosus extract (GMP certificate) and amiodarone (a narrow therapeutic index drug) in rats. In a first pharmacokinetic study, rats were simultaneously co-administered with a single-dose of F. vesiculosus (575 mg/kg, p.o.) and amiodarone (50 mg/kg, p.o.); in a second study, rats were pre-treated during 14 days with F. vesiculosus (575 mg/kg/day, p.o.) and received amiodarone (50 mg/kg, p.o.) on the 15th day. Rats of the control groups received the corresponding volume of vehicle. After analysis of the pharmacokinetic data it deserves to be highlighted the significant decrease in the peak plasma concentration of amiodarone (55.4%) as well as the reduction of systemic exposure to the parent drug (~30%) following the simultaneous co-administration of F. vesiculosus extract and amiodarone. This paper reports, for the first time, the herb-drug interaction between F. vesiculosus and amiodarone, which determined a considerable decrease on amiodarone bioavailability in rats. Therefore, the therapeutic efficacy of amiodarone may be compromised by the concurrent administration of herbal slimming medicines/dietary supplements containing F. vesiculosus.
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Affiliation(s)
- Márcio Rodrigues
- Laboratory of Pharmacology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
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Garber JR, Cobin RH, Gharib H, Hennessey JV, Klein I, Mechanick JI, Pessah-Pollack R, Singer PA, Woeber KA. Clinical practice guidelines for hypothyroidism in adults: cosponsored by the American Association of Clinical Endocrinologists and the American Thyroid Association. Thyroid 2012; 22:1200-35. [PMID: 22954017 DOI: 10.1089/thy.2012.0205] [Citation(s) in RCA: 536] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Hypothyroidism has multiple etiologies and manifestations. Appropriate treatment requires an accurate diagnosis and is influenced by coexisting medical conditions. This paper describes evidence-based clinical guidelines for the clinical management of hypothyroidism in ambulatory patients. METHODS The development of these guidelines was commissioned by the American Association of Clinical Endocrinologists (AACE) in association with American Thyroid Association (ATA). AACE and the ATA assembled a task force of expert clinicians who authored this article. The authors examined relevant literature and took an evidence-based medicine approach that incorporated their knowledge and experience to develop a series of specific recommendations and the rationale for these recommendations. The strength of the recommendations and the quality of evidence supporting each was rated according to the approach outlined in the American Association of Clinical Endocrinologists Protocol for Standardized Production of Clinical Guidelines-2010 update. RESULTS Topics addressed include the etiology, epidemiology, clinical and laboratory evaluation, management, and consequences of hypothyroidism. Screening, treatment of subclinical hypothyroidism, pregnancy, and areas for future research are also covered. CONCLUSIONS Fifty-two evidence-based recommendations and subrecommendations were developed to aid in the care of patients with hypothyroidism and to share what the authors believe is current, rational, and optimal medical practice for the diagnosis and care of hypothyroidism. A serum thyrotropin is the single best screening test for primary thyroid dysfunction for the vast majority of outpatient clinical situations. The standard treatment is replacement with L-thyroxine. The decision to treat subclinical hypothyroidism when the serum thyrotropin is less than 10 mIU/L should be tailored to the individual patient.
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Affiliation(s)
- Jeffrey R Garber
- Endocrine Division, Harvard Vanguard Medical Associates, Boston, Massachusetts 02215, USA.
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Song JS, Lim KM, Kang S, Noh JY, Kim K, Bae ON, Chung JH. Procoagulant and prothrombotic effects of the herbal medicine, Dipsacus asper and its active ingredient, dipsacus saponin C, on human platelets. J Thromb Haemost 2012; 10:895-906. [PMID: 22405282 DOI: 10.1111/j.1538-7836.2012.04685.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND In spite of the growing popularity of herbal medicines and natural food supplements, their effects on cardiovascular homeostasis remain largely unknown, especially regarding pro-thrombotic risks. OBJECTIVE In the present study, 21 herbal tea extracts were screened for the procoagulant activities on platelets, an important promoter of thrombosis to examine if herbal medicines or natural products may have prothrombotic risks. We discovered that Dipsacus asper (DA), known to have analgesic and anti-inflammatory effects, potently induced procoagulant activities in platelets. We tried to identify the active ingredient and elucidate the underlying mechanism. RESULTS Among 10 major ingredients of DA, dipsacus saponin C (DSC) was identified as a key active ingredient in DA-induced procoagulant activities. DSC-induced procoagulant activities were achieved by the exposure of phosphatidylserine (PS) and PS-bearing microparticle generation that were caused by the alteration in the activities of phospholipid translocases: scramblase and flippase. These events were initiated by increased intracellular calcium and ATP depletion. Notably, DSC induced a series of apoptotic events including the disruption of mitochondrial membrane potential, translocation of Bax and Bak, cytochrome c release and caspase-3 activation. The key roles of apoptotic pathway and caspase activation were demonstrated by the reversal of DSC-induced PS exposure and procoagulant activities with the pretreatment of caspase inhibitors. Interestingly, EGTA reversed DSC-induced procoagulant activities and apoptotic events suggesting that an intracellular calcium increase may play a central role. These results were also confirmed in vivo where platelets of the rats exposed to DSC or DA exhibited PS exposure. Most importantly, DSC or DA administration led to increased thrombus formation. CONCLUSION These results demonstrate that herbal medicines or natural products such as DA or DSC might have prothrombotic risks through procoagulant activation of platelets.
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Affiliation(s)
- J-S Song
- College of Pharmacy, Seoul National University, Seoul, Korea
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Lienou LL, Telefo BP, Bale B, Yemele D, Tagne RS, Goka SC, Lemfack CM, Mouokeu C, Moundipa PF. Effect of the aqueous extract of Senecio biafrae (Oliv. & Hiern) J. Moore on sexual maturation of immature female rat. Altern Ther Health Med 2012; 12:36. [PMID: 22482701 PMCID: PMC3350434 DOI: 10.1186/1472-6882-12-36] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Accepted: 04/06/2012] [Indexed: 12/29/2022]
Abstract
Background Senecio biafrae (Asteraceae) is a medicinal plant widely used by traditional healers in the western region of Cameroon for the treatment of female infertility. This experiment was designed to evaluate the effect of the aqueous extract from leaves and stems of S. biafrae (AESb) on the onset of puberty and some biochemical and physiological parameters of reproduction in immature Wistar female rats. Methods Different doses of AESb were daily and orally administered to immature female rats (13 animals/group) for 30 days. At the end of the treatment period, six animal of each experimental group were sacrificed and their body, ovarian, uterus weight; uterine, ovarian protein or cholesterol level as well as data on puberty onset recorded. The remaining animals of each group were used for the fertility test and some gestational parameters recorded. Results A linear increase in the growth rate of all animals was observed. The body weight gain in animals treated at the dose of 8 mg/kg of AESb significantly increased (p < 0.05) after 25 days of treatment while those receiving the doses of 32 and 64 mg/kg presented a significantly low body weight gain starting from the 19th day till the end of the treatment period. The ages (days) of animals at vaginal opening (VO) was significantly reduced (p < 0.05) in those treated with the doses of 32 (41.25 ± 0.51) and 64 mg/kg (41.42 ± 0.54) as compared to control animals (43.33 ± 0.73). AESb significantly increased (p < 0.05) the ovarian weight and the number of corpora lutea in animals treated with 8 mg/kg as well as the uterine weight and protein levels irrespective of the dose. No significant effect of the extract on various fertility and gestational parameters was registered. Conclusion The overall results of the present study provide evidence on the puberty onset induction and ovarian folliculogenesis effect of AESb in immature female rat.
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Antioxidant activity of Fragilariopsis pseudonana and protective effect against hydrogen peroxide-induced inhibition of gap junctional intercellular communication. Food Sci Biotechnol 2012. [DOI: 10.1007/s10068-012-0055-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Wada K, Nakamura K, Tamai Y, Tsuji M, Watanabe K, Ando K, Nagata C. Seaweed intake and urinary sex hormone levels in preschool Japanese children. Cancer Causes Control 2011; 23:239-44. [DOI: 10.1007/s10552-011-9871-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Accepted: 11/03/2011] [Indexed: 11/24/2022]
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Li SX, Lin LX, Zheng FY, Wang QX. Metal bioavailability and risk assessment from edible brown alga Laminaria japonica, using biomimetic digestion and absorption system and determination by ICP-MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:822-8. [PMID: 21207979 DOI: 10.1021/jf103480y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A new biomimetic digestion and absorption system, including in vitro bionic digestion and biomimetic membrane extraction, was used for the first time for the pretreatment of edible Laminaria japonica . After bionic digestion, 11 species of trace metals (V, Cr, Mn, Fe, Ni, Cu, Zn, Se, As, Cd, and Pb) in the resulting chyme were transformed into their final coordinated complexes and then absorbed by the biomembrane. Similar to the biomembrane between gastrointestinal tract and blood vessels, monolayer liposome was used for the first time as a biomembrane model. Affinity-monolayer liposome metals (AMLMs) were separated, determined by ICP-MS, and then used for the metal bioavailability assessment as the bioassimilated part. The action of gastrointestinal acidity and components (including digestive enzymes) was assessed on the basis of the concentration of AMLMs; the safe dosage and tolerable upper intake level of L. japonica for adults were proposed as 33.3 and 230.8 g/day, respectively.
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Affiliation(s)
- Shun-Xing Li
- Department of Chemistry and Environmental Science, Zhangzhou Normal University, Zhangzhou, China.
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Potential role of marine algae on female health, beauty, and longevity. ADVANCES IN FOOD AND NUTRITION RESEARCH 2011; 64:41-55. [PMID: 22054937 DOI: 10.1016/b978-0-12-387669-0.00004-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Marine environment has been known as a rich source of chemical structures with numerous health benefit effects. Among marine organisms, marine algae have been identified as an underexploited plant resource although they have long been recognized as valuable sources of structurally diverse bioactive compounds. Presently, several lines of studies have provided insight into biological activities of marine algae in promoting female health, beauty, and longevity. Hence, marine algae have a great potential to be used as a part of pharmaceuticals, nutraceuticals, and functional foods. This contribution presents an overview of marine algal potential effect in promoting female health, beauty, and longevity.
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Teas J, Hurley TG, Hebert JR, Franke AA, Sepkovic DW, Kurzer MS. Dietary seaweed modifies estrogen and phytoestrogen metabolism in healthy postmenopausal women. J Nutr 2009; 139:939-44. [PMID: 19321575 DOI: 10.3945/jn.108.100834] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Seaweed and soy foods are consumed daily in Japan, where breast cancer rates for postmenopausal women are significantly lower than in the West. Likely mechanisms include differences in diet, especially soy consumption, and estrogen metabolism. Fifteen healthy postmenopausal women participated in this double-blind trial of seaweed supplementation with soy challenge. Participants were randomized to 7 wk of either 5 g/d seaweed (Alaria) or placebo (maltodextrin). During wk 7, participants also consumed a daily soy protein isolate (2 mg isoflavones/kg body weight). After a 3-wk washout period, participants were crossed over to the alternate supplement schedule. There was an inverse correlation between seaweed dose (mg/kg body weight) and serum estradiol (E2) (seaweed-placebo = y = -2.29 x dose + 172.3; r = -0.70; P = 0.003), [corrected] which was linear across the range of weights. Soy supplementation increased urinary daidzein, glycitein, genistein, and O-desmethylangolensin (P = 0.0001) and decreased matairesinol and enterolactone (P < 0.05). Soy and seaweed plus soy (SeaSoy) increased urinary excretion of 2-hydroxyestrogen (2-OHE) (P = 0.0001) and the ratio of 2-OHE:16alpha-hydroxyestrone (16alphaOHE(1)) (P = 0.01). For the 5 equol excretors, soy increased urinary equol excretion (P = 0.0001); the combination of SeaSoy further increased equol excretion by 58% (P = 0.0001). Equol producers also had a 315% increase in 2:16 ratio (P = 0.001) with SeaSoy. Seaweed favorably alters estrogen and phytoestrogen metabolism and these changes likely include modulation of colonic bacteria.
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Affiliation(s)
- Jane Teas
- University of South Carolina Cancer Center, Columbia, SC 29208, USA.
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Holtkamp AD, Kelly S, Ulber R, Lang S. Fucoidans and fucoidanases--focus on techniques for molecular structure elucidation and modification of marine polysaccharides. Appl Microbiol Biotechnol 2009; 82:1-11. [PMID: 19043701 DOI: 10.1007/s00253-008-1790-x] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2008] [Revised: 11/07/2008] [Accepted: 11/08/2008] [Indexed: 01/12/2023]
Abstract
The research field of fucoidans (sulphated polysaccharides from algae) and fucoidanases was strongly developing in recent years. Several different fucoidans and a few fucoidan-degrading enzymes were isolated and characterised. A high potential is seen in the medical exploitation of the fucoidans and its degradation products. This review gives an overview about the research of the last 5 years concerning fucoidan characterisation and application as well as enzyme detection, characterisation and production.
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Affiliation(s)
- Andrea Désirée Holtkamp
- Institute of Biochemistry and Biotechnology, Department of Biotechnology, Technical University of Braunschweig, Spielmannstr. 7, Braunschweig, Germany
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Zhang W, Moskowitz RW, Nuki G, Abramson S, Altman RD, Arden N, Bierma-Zeinstra S, Brandt KD, Croft P, Doherty M, Dougados M, Hochberg M, Hunter DJ, Kwoh K, Lohmander LS, Tugwell P. OARSI recommendations for the management of hip and knee osteoarthritis, part I: critical appraisal of existing treatment guidelines and systematic review of current research evidence. Osteoarthritis Cartilage 2007; 15:981-1000. [PMID: 17719803 DOI: 10.1016/j.joca.2007.06.014] [Citation(s) in RCA: 496] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2007] [Accepted: 06/16/2007] [Indexed: 02/02/2023]
Abstract
PURPOSE As a prelude to developing updated, evidence-based, international consensus recommendations for the management of hip and knee osteoarthritis (OA), the Osteoarthritis Research Society International (OARSI) Treatment Guidelines Committee undertook a critical appraisal of published guidelines and a systematic review (SR) of more recent evidence for relevant therapies. METHODS Sixteen experts from four medical disciplines (primary care two, rheumatology 11, orthopaedics one and evidence-based medicine two), two continents and six countries (USA, UK, France, Netherlands, Sweden and Canada) formed the guidelines development team. Three additional experts were invited to take part in the critical appraisal of existing guidelines in languages other than English. MEDLINE, EMBASE, Science Citation Index, CINAHL, AMED, Cochrane Library, seven Guidelines Websites and Google were searched systematically to identify guidelines for the management of hip and/or knee OA. Guidelines which met the inclusion/exclusion criteria were assigned to four groups of four appraisers. The quality of the guidelines was assessed using the AGREE (Appraisal of Guidelines for Research and Evaluation) instrument and standardised percent scores (0-100%) for scope, stakeholder involvement, rigour, clarity, applicability and editorial independence, as well as overall quality, were calculated. Treatment modalities addressed and recommended by the guidelines were summarised. Agreement (%) was estimated and the best level of evidence to support each recommendation was extracted. Evidence for each treatment modality was updated from the date of the last SR in January 2002 to January 2006. The quality of evidence was evaluated using the Oxman and Guyatt, and Jadad scales for SRs and randomised controlled trials (RCTs), respectively. Where possible, effect size (ES), number needed to treat, relative risk (RR) or odds ratio and cost per quality-adjusted life year gained (QALY) were estimated. RESULTS Twenty-three of 1462 guidelines or consensus statements retrieved from the literature search met the inclusion/exclusion criteria. Six were predominantly based on expert opinion, five were primarily evidence based and 12 were based on both. Overall quality scores were 28%, 41% and 51% for opinion-based, evidence-based and hybrid guidelines, respectively (P=0.001). Scores for aspects of quality varied from 18% for applicability to 67% for scope. Thirteen guidelines had been developed for specific care settings including five for primary care (e.g., Prodigy Guidance), three for rheumatology (e.g., European League against Rheumatism recommendations), three for physiotherapy (e.g., Dutch clinical practice guidelines for physical therapy) and two for orthopaedics (e.g., National Institutes of Health consensus guidelines), whereas 10 did not specify the target users (e.g., Ontario guidelines for optimal therapy). Whilst 14 guidelines did not separate hip and knee, eight were specific for knee but only one for hip. Fifty-one different treatment modalities were addressed by these guidelines, but only 20 were universally recommended. Evidence to support these modalities ranged from Ia (meta-analysis/SR of RCTs) to IV (expert opinion). The efficacy of some modalities of therapy was confirmed by the results of RCTs published between January 2002 and 2006. These included exercise (strengthening ES 0.32, 95% confidence interval (CI) 0.23, 0.42, aerobic ES 0.52, 95% CI 0.34, 0.70 and water-based ES 0.25, 95% CI 0.02, 0.47) and nonsteroidal anti-inflammatory drugs (NSAIDs) (ES 0.32, 95% CI 0.24, 0.39). Examples of other treatment modalities where recent trials failed to confirm efficacy included ultrasound (ES 0.06, 95% CI -0.39, 0.52), massage (ES 0.10, 95% CI -0.23, 0.43) and heat/ice therapy (ES 0.69, 95% CI -0.07, 1.45). The updated evidence on adverse effects also varied from treatment to treatment. For example, while the evidence for gastrointestinal (GI) toxicity of non-selective NSAIDs (RR=5.36, 95% CI 1.79, 16.10) and for increased risk of myocardial infarction associated with rofecoxib (RR=2.24, 95% CI 1.24, 4.02) were reinforced, evidence for other potential drug related adverse events such as GI toxicity with acetaminophen or myocardial infarction with celecoxib remained inconclusive. CONCLUSION Twenty-three guidelines have been developed for the treatment of hip and/or knee OA, based on opinion alone, research evidence or both. Twenty of 51 modalities of therapy are universally recommended by these guidelines. Although this suggests that a core set of recommendations for treatment exists, critical appraisal shows that the overall quality of existing guidelines is sub-optimal, and consensus recommendations are not always supported by the best available evidence. Guidelines of optimal quality are most likely to be achieved by combining research evidence with expert consensus and by paying due attention to issues such as editorial independence, stakeholder involvement and applicability. This review of existing guidelines provides support for the development of new guidelines cognisant of the limitations in existing guidelines. Recommendations should be revised regularly following SR of new research evidence as this becomes available.
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Affiliation(s)
- W Zhang
- University of Edinburgh, Osteoarticular Research Group, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh EH16 4TJ, United Kingdom
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Yuan YV, Walsh NA. Antioxidant and antiproliferative activities of extracts from a variety of edible seaweeds. Food Chem Toxicol 2006; 44:1144-50. [PMID: 16554116 DOI: 10.1016/j.fct.2006.02.002] [Citation(s) in RCA: 216] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2006] [Revised: 01/30/2006] [Accepted: 02/01/2006] [Indexed: 11/17/2022]
Abstract
Dietary Laminaria and Porphyra sp. have been reported to reduce the risk of intestinal or mammary cancer in animal studies. Algal anticarcinogenicity may involve effects on cell proliferation and antioxidant activity. Thus, in the present study, we evaluated the effect of red alga, dulse (Palmaria palmata) and three kelp (Laminaria setchellii, Macrocystis integrifolia, Nereocystis leutkeana) extracts on human cervical adenocarcinoma cell line (HeLa cells) proliferation using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) assay. The 1-butanol soluble fractions from the methanol extracts of these algae were also evaluated for reducing activity and total polyphenol content. After 72 h incubation, HeLa cell proliferation was inhibited (p<0.05) between 0% and 78% by P. palmata; 0% and 55% by L. setchellii and 0% and 69% by M. integrifolia and N. leutkeana at 0.5-5mg/mL algal extract. Algal extract reducing activities were as follows: P. palmata>M. integrifolia>L. setchellii>N. leutkeana; and total polyphenol contents were: P. palmata>M. integrifolia=N. leutkeana>L. setchellii. The antiproliferative efficacy of these algal extracts were positively correlated with the total polyphenol contents (p<0.05), suggesting a causal link related to extract content of kelp phlorotannins and dulse polyphenols including mycosporine-like amino acids and phenolic acids.
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Affiliation(s)
- Yvonne V Yuan
- School of Nutrition, Faculty of Community Services, Ryerson University, 350 Victoria St., Toronto, Ont., Canada M5B 2K3.
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Yuan YV, Carrington MF, Walsh NA. Extracts from dulse (Palmaria palmata) are effective antioxidants and inhibitors of cell proliferation in vitro. Food Chem Toxicol 2005; 43:1073-81. [PMID: 15833383 DOI: 10.1016/j.fct.2005.02.012] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2004] [Revised: 02/08/2005] [Accepted: 02/27/2005] [Indexed: 10/25/2022]
Abstract
Previously, we reported that a 1-butanol soluble extract of the edible red alga Palmaria palmata, known as dulse, exhibited hydroxyl and stable free radical scavenging activity as well as inhibition of lipid peroxidation, attributed to the reducing activity and polyphenol content of the dulse extract. In the present study, we evaluated the antioxidant and antiproliferative activities of two grades of dulse harvested from Canadian Maritime locations differing in UV radiation exposure (i.e. west versus east coasts of Grand Manan Island, New Brunswick). The 1-butanol soluble extract from Grade 1 dulse (reduced UV-exposure) exhibited lower reducing activity versus Grade 2 dulse (greater UV exposure) reflecting a lower requirement for endogenous antioxidant protection. Grade 1 and 2 dulse extracts both inhibited (p0.03) AAPH-induced lipid peroxidation, but had no effect on AMVN-induced lipid peroxidation, demonstrating the aqueous nature of the antioxidants involved. The Grade 1 and 2 dulse extract inhibition (p<0.05) of HeLa cell proliferation was dose-dependent over 0.5-5.0mg/mL and maximal at 48 and 72h incubation. The antiproliferative effects of the Grade 1 and 2 dulse extracts in the present study likely reflect the bioactivity of the polyphenol content of these extracts.
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Affiliation(s)
- Yvonne V Yuan
- School of Nutrition, Faculty of Community Services, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3.
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Adams JD, Garcia C. Palliative Care Among Chumash People. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2005; 2:143-147. [PMID: 15937554 PMCID: PMC1142202 DOI: 10.1093/ecam/neh090] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2005] [Revised: 03/17/2005] [Accepted: 04/04/2005] [Indexed: 12/03/2022]
Abstract
Chumash Healers used breathing therapy and counseling to keep patients involved in daily life and to avoid depression. Heat therapy, massage and pain medications were used to help with pain. Another primary function of the Healer was to help the patient sleep as normally as possible, possibly using mugwort or momoy. Nutrition was considered by Healers in treating their patients. The overall concern of the Healer was to help maintain the daily routine of village life during the normal process of the death of a village member.
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Affiliation(s)
- James D. Adams
- Department of Molecular Pharmacology and Toxicology, University of Southern California, School of PharmacyLos Angeles, CA, USA
- For reprints and all correspondence: James D. Adams Jr, Associate Professor of Molecular Pharmacology and Toxicology, University of Southern California, School of Pharmacy, 1985 Zonal Avenue, PSC 508, Los Angeles, CA 90089-9121, USA. Tel: +1-323-442-1362; E-mail:
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