首页 > 最新文献

Journal of Nutritional Health & Food Science最新文献

英文 中文
A Study on Knowledge, Attitude and Practice on Food Safety & Hygiene among the Students of a Private University of Delhi, NCR 印度德里一所私立大学学生食品安全卫生知识、态度与行为研究
Pub Date : 2020-08-03 DOI: 10.15226/jnhfs.2020.001177
Neha R. Malhotra, R. Shankar, Akanksha Pal, Sana Ahmed, N. Taneja, Aanchal Anant Awasth, R. Janardhanan
Background: In India, food safety and hygiene are a growing concern with emerging incidents of food contaminants which if remains unnoticed can lead to various health hazards, illness, outbreaks and even death. Objective: To study knowledge, attitude and practice (KAP) towards food safety and hygiene among students of a private university of Delhi, NCR. Method: A Cross-Sectional study design using self-administered, pre-tested questionnaire containing a total of 40 questions was conducted among 500 private university students in Delhi, NCR. Information was collected from various disciplines through self-administered survey forms. For assessing the knowledge, a score of 1 and 0 was given to every correct and incorrect answers respectively. For assessing Attitude and Practice each correct response was awarded a score of 2, for neutral response a score of 1 and for incorrect response a score of 0 was awarded. Quartiles were generated for each component. Based on quartiles, knowledge, attitude and practice were divided into adequate and inadequate. Result: The study participants included 31.6% males and 68.4% females. 29% participants belonged to postgraduate course and 71.1% from undergraduate course. Regarding food safety & hygiene, 74.8% participants had adequate knowledge, 53% had adequate attitude and 46% had adequate practice. Conclusion: Continuous education is necessary to increase the awareness among young adults in the near future; they will be the ones directly handling food and play an important role to help maintain a hygienic and clean environment. Keywords: Food safety; Food hygiene; Food Borne Disease; Knowledge; Attitude; Practice
背景:在印度,食品安全和卫生日益受到关注,食品污染物事件不断出现,如果不加以注意,可能导致各种健康危害、疾病、疫情甚至死亡。目的:了解德里某私立大学学生对食品安全卫生的知识、态度和实践情况。方法:采用横断面研究设计,采用自填预测问卷,共包含40个问题,对印度首都德里市500名私立大学生进行调查。通过自我管理的调查表格从各个学科收集信息。对每一个正确答案和错误答案分别打1分和0分。对于态度和实践的评估,每个正确的回答得2分,中性的回答得1分,错误的回答得0分。为每个成分生成四分位数。根据四分位数,将知识、态度和实践分为充分和不充分。结果:男性占31.6%,女性占68.4%。29%的参与者为研究生,71.1%为本科。在食品安全卫生方面,74.8%的受访者有足够的知识,53%的受访者有足够的态度,46%的受访者有足够的实践。结论:在不久的将来,继续教育对提高年轻人的意识是必要的;他们将是直接处理食物的人,并在帮助保持卫生和清洁的环境中发挥重要作用。关键词:食品安全;食品卫生;食源性疾病;知识;态度;实践
{"title":"A Study on Knowledge, Attitude and Practice on Food Safety & Hygiene among the Students of a Private University of Delhi, NCR","authors":"Neha R. Malhotra, R. Shankar, Akanksha Pal, Sana Ahmed, N. Taneja, Aanchal Anant Awasth, R. Janardhanan","doi":"10.15226/jnhfs.2020.001177","DOIUrl":"https://doi.org/10.15226/jnhfs.2020.001177","url":null,"abstract":"Background: In India, food safety and hygiene are a growing concern with emerging incidents of food contaminants which if remains unnoticed can lead to various health hazards, illness, outbreaks and even death. Objective: To study knowledge, attitude and practice (KAP) towards food safety and hygiene among students of a private university of Delhi, NCR. Method: A Cross-Sectional study design using self-administered, pre-tested questionnaire containing a total of 40 questions was conducted among 500 private university students in Delhi, NCR. Information was collected from various disciplines through self-administered survey forms. For assessing the knowledge, a score of 1 and 0 was given to every correct and incorrect answers respectively. For assessing Attitude and Practice each correct response was awarded a score of 2, for neutral response a score of 1 and for incorrect response a score of 0 was awarded. Quartiles were generated for each component. Based on quartiles, knowledge, attitude and practice were divided into adequate and inadequate. Result: The study participants included 31.6% males and 68.4% females. 29% participants belonged to postgraduate course and 71.1% from undergraduate course. Regarding food safety & hygiene, 74.8% participants had adequate knowledge, 53% had adequate attitude and 46% had adequate practice. Conclusion: Continuous education is necessary to increase the awareness among young adults in the near future; they will be the ones directly handling food and play an important role to help maintain a hygienic and clean environment. Keywords: Food safety; Food hygiene; Food Borne Disease; Knowledge; Attitude; Practice","PeriodicalId":366384,"journal":{"name":"Journal of Nutritional Health & Food Science","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130005598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Omega 3 and Azadirachta Indica J. Seed Oil Inhibit Hemoglobin Polymerization and Modulate Erythrocyte Membrane Atpases in Sickle Cell Disease (SCD) 欧米伽3和印楝籽油抑制镰状细胞病血红蛋白聚合和调节红细胞膜atp酶
Pub Date : 2020-05-20 DOI: 10.15226/jnhfs.2020.001175
N. Na, Ko Tc, Djouhou Fm, Ngo Sf, Pieme Ac, Kansci G, Fokou E
Back ground: Functional foods/Nutraceuticals efficacy depends on both its composition and the physicochemical properties of the components that used in their formulation. Vegetable oil can play an important role. Several studies are shown that omega 3 (0.2%) and Azadirachta indica J. seed oil (0.4%) have antisickling, antioxidant and anti-haemolytic properties. Objective: The purpose of this present study was conducted to determine effects of omega 3 and Azadirachta indica J. seed oil on hemoglobin polymerization and erythrocyte membrane ATPases in Sickle Cell Disease (SCD). Method: The ability for the omega 3 and Azadirachta indica J. seed oil to inhibit sickle cell hemoglobin polymerization and improve the Fe2+/Fe3+ ratio of HbS blood were assed using spectroscopic method. The activities of three ATPases (Na+/K+; Ca2+; and Mg2+-ATPases ) were investigated by the kinetic method following the release of inorganic phosphate (Pi) by ATP taking into account the determination of the total membrane proteins of erythrocytes by Bradford’s method. Results: The lowest potential was obtained with Azadirachta indica J. seed oil (AO: 0.4% v/v) corresponding significantly (p <0.05) to the highest potential of inhibition of polymerization (83.11 ± 8%) compared to that obtained with omega 3 (ω3 0.2% v/v) estimated at 68.15±7%. The greatest Fe2+Fe3+ ratio was obtained (6.65±1.68) with AO (0.4% v/v) corresponding significantly (p <0.05) to the greatest rate of increase of oxyhemoglobin (79.05±3%) compared to that obtained with ω3 (0.2% v/v) estimated at 70.58±5%. As for the activities of Na+/K+, Ca2+ and Mg2+-ATPases expressed in μmole Pi/mg protein/hour x 10-3, there was an increase in the activities of Na+/K+ and Ca2+-ATPases (203.82±41 and 190.48±32) with AO (0.4% v/v), but without any significant difference (p>0.05) compared to those obtained with ω3 (0.2% v/v) (188.66±9 and 235.61±52). However, for Mg2+-ATPase, there was rather a significant decrease (p <0.05) in these activities ranging from 181.9±32 for ω3 (0.2% v/v) to 124.00±21 for AO (0.4% v/v). Conclusion: The Azadirachta indica J. seed oil at a concentration of 0.4% v/v offered the best potential inhibition of hemoglobin S polymerization, oxyhemoglobin increase rate and the best ATPastic activities. Keywords: Omega 3 - Azadirachta indica J. seed oil - sickle cell disease - polymerization - Fe2+/Fe3+ ratio - ATPase activities.
背景:功能性食品/营养保健品的功效取决于其成分和配方中使用的成分的物理化学性质。植物油可以发挥重要作用。几项研究表明,欧米茄- 3(0.2%)和印楝籽油(0.4%)具有抗镰刀病、抗氧化和抗溶血的特性。目的:研究欧米伽- 3和印楝籽油对镰状细胞病(SCD)患者血红蛋白聚合和红细胞膜atp酶的影响。方法:采用波谱法考察欧米伽- 3和印楝籽油对HbS血中镰状细胞血红蛋白聚合的抑制作用和对Fe2+/Fe3+比值的改善作用。三种atp酶(Na+/K+;Ca2 +;和Mg2+-ATPases)在ATP释放无机磷酸盐(Pi)后用动力学方法进行了研究,同时考虑到用Bradford法测定红细胞的总膜蛋白。结果:与ω为3 (0.2% v/v)时相比,ω为0.4% v/v时电位最低(188.66±9和235.61±52);而对于Mg2+-ATPase, ω3 (0.2% v/v)和AO (0.4% v/v)的活性分别为181.9±32和124.00±21,显著降低(p <0.05)。结论:0.4% v/v浓度的印印果籽油对血红蛋白S聚合、氧合血红蛋白增加率和atp活性的抑制潜力最好。关键词:欧米伽3 -印楝籽油-镰状细胞病-聚合- Fe2+/Fe3+比值- atp酶活性
{"title":"Omega 3 and Azadirachta Indica J. Seed Oil Inhibit Hemoglobin Polymerization and Modulate Erythrocyte Membrane Atpases in Sickle Cell Disease (SCD)","authors":"N. Na, Ko Tc, Djouhou Fm, Ngo Sf, Pieme Ac, Kansci G, Fokou E","doi":"10.15226/jnhfs.2020.001175","DOIUrl":"https://doi.org/10.15226/jnhfs.2020.001175","url":null,"abstract":"Back ground: Functional foods/Nutraceuticals efficacy depends on both its composition and the physicochemical properties of the components that used in their formulation. Vegetable oil can play an important role. Several studies are shown that omega 3 (0.2%) and Azadirachta indica J. seed oil (0.4%) have antisickling, antioxidant and anti-haemolytic properties. Objective: The purpose of this present study was conducted to determine effects of omega 3 and Azadirachta indica J. seed oil on hemoglobin polymerization and erythrocyte membrane ATPases in Sickle Cell Disease (SCD). Method: The ability for the omega 3 and Azadirachta indica J. seed oil to inhibit sickle cell hemoglobin polymerization and improve the Fe2+/Fe3+ ratio of HbS blood were assed using spectroscopic method. The activities of three ATPases (Na+/K+; Ca2+; and Mg2+-ATPases ) were investigated by the kinetic method following the release of inorganic phosphate (Pi) by ATP taking into account the determination of the total membrane proteins of erythrocytes by Bradford’s method. Results: The lowest potential was obtained with Azadirachta indica J. seed oil (AO: 0.4% v/v) corresponding significantly (p <0.05) to the highest potential of inhibition of polymerization (83.11 ± 8%) compared to that obtained with omega 3 (ω3 0.2% v/v) estimated at 68.15±7%. The greatest Fe2+Fe3+ ratio was obtained (6.65±1.68) with AO (0.4% v/v) corresponding significantly (p <0.05) to the greatest rate of increase of oxyhemoglobin (79.05±3%) compared to that obtained with ω3 (0.2% v/v) estimated at 70.58±5%. As for the activities of Na+/K+, Ca2+ and Mg2+-ATPases expressed in μmole Pi/mg protein/hour x 10-3, there was an increase in the activities of Na+/K+ and Ca2+-ATPases (203.82±41 and 190.48±32) with AO (0.4% v/v), but without any significant difference (p>0.05) compared to those obtained with ω3 (0.2% v/v) (188.66±9 and 235.61±52). However, for Mg2+-ATPase, there was rather a significant decrease (p <0.05) in these activities ranging from 181.9±32 for ω3 (0.2% v/v) to 124.00±21 for AO (0.4% v/v). Conclusion: The Azadirachta indica J. seed oil at a concentration of 0.4% v/v offered the best potential inhibition of hemoglobin S polymerization, oxyhemoglobin increase rate and the best ATPastic activities. Keywords: Omega 3 - Azadirachta indica J. seed oil - sickle cell disease - polymerization - Fe2+/Fe3+ ratio - ATPase activities.","PeriodicalId":366384,"journal":{"name":"Journal of Nutritional Health &amp; Food Science","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129351317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Amino Acids Extract from Black Bean Seeds (Phaseolus Vulgaris L.)Inhibit Hemoglobin Polymerizationand Modulate Erythrocyte Membrane Atpases In Sickle Cell Disease (SCD) 黑豆种子氨基酸提取物(Phaseolus Vulgaris L.)抑制镰状细胞病血红蛋白聚合和调节红细胞膜atp酶
Pub Date : 2020-05-06 DOI: 10.15226/jnhfs.2020.001174
Talla Tn, Ko Tc, J. P., Pieme Ac, Kansci G, Fokou E
Back ground: The basic extracts involved in the formulation of functional foods/nutraceutics must first be the subject of preclinical and clinical trials. The several studies were shown that amino acids extract from black bean seeds (Phaseolus vulgaris L.) have antisickling, antioxidant and anti-haemolitic properties. Objective: The objective of this study is to investigate the effect of amino acids extract from black bean seeds (Phaseolus vulgaris L.) on hemoglobin polymerization and erythrocytes membrane ATPases activities in Sickle Cell Disease (SCD). Method: The ability for the amino acids extract to inhibit sickle cell hemoglobin polymerization and improve the Fe2+/Fe3+ ratio of HbSS blood were assed using spectroscopic method. The activities of three ATPases (Na+/K+; Ca2+; and Mg2+-ATPases) were investigated by the kinetic method following the release of inorganic phosphate (Pi) by ATP taking into account the determination of the total membrane proteins of erythrocytes by Bradford’s method. Result: The lowest potential of inhibition was obtained (39.98±2%) with the amino acids extract at 12 mg/mL corresponding significantly (p<0.05) to the highest potential of inhibition of polymerization (71.16±2%). The greatest Fe2+Fe3+ ratio was obtained (3.94±2%) with the amino acids extract at 12 mg/mL corresponding significantly (p<0.05) to the best rates increase of oxy-hemoglobin (48.73±2%). The red blood cells membranes ATPase activity were estimated and expressed as μmol of Pi/mg of protein/hour x 10-3 there was an increase in the activities of Na+/ K+ and Ca2+-ATPases (255.98±62 and 282.98±36 respectively) at the concentration of 12 mg/mL of extract compared to the negative control (167.36±60 and 236.91±62 respectively). However, for Mg2+-ATPase, there is rather a significant reduction (p<0.05) in this activity (286.71±51 against 146.53±35) obtained in the presence of the amino acid extract at 12 mg/mL). Conclusion: The amino acids extract of black bean seeds (Phaseolus vulgaris L.) at a concentration of 12 mg/mL offered the best inhibition potentials of hemoglobin S polymerization, increase rates of oxyhemoglobin and the best ATPasic activities. Keywords: Amino acid extracts; black bean seeds; sickle cell disease; polymerization; Fe2+/Fe3 + ratio; ATPase activities
背景:功能性食品/营养保健品配方中涉及的基本提取物必须首先是临床前和临床试验的主题。多项研究表明,黑豆种子氨基酸提取物具有抗镰刀病、抗氧化和抗溶血作用。目的:研究黑豆种子氨基酸提取物对镰状细胞病(SCD)患者血红蛋白聚合和红细胞膜atp酶活性的影响。方法:采用波谱法考察氨基酸提取物抑制镰状细胞血红蛋白聚合和提高HbSS血中Fe2+/Fe3+比值的能力。三种atp酶(Na+/K+;Ca2 +;和Mg2+-ATPases)在ATP释放无机磷酸盐(Pi)后用动力学方法进行了研究,同时考虑到用Bradford法测定红细胞的总膜蛋白。结果:氨基酸提取物在12 mg/mL时的抑制电位最低(39.98±2%),其抑制电位最高(71.16±2%)显著(p<0.05)。氨基酸提取物浓度为12 mg/mL时,Fe2+Fe3+比值最高(3.94±2%),氧合血红蛋白增幅最高(48.73±2%)(p<0.05)。红血球细胞膜atp酶活性以μmol / Pi/mg蛋白/小时× 10-3表示。与阴性对照(167.36±60和236.91±62)相比,12 mg/mL提取物浓度下Na+/ K+和Ca2+- atp酶活性分别为255.98±62和282.98±36。然而,对于Mg2+- atp酶,在氨基酸提取物浓度为12 mg/mL时,其活性显著降低(p<0.05)(286.71±51比146.53±35)。结论:黑豆种子氨基酸提取物浓度为12 mg/mL时对血红蛋白S聚合的抑制作用最强,对血红蛋白氧合速率的提高作用最强,对ATPasic活性的提高作用最强。关键词:氨基酸提取物;黑豆种子;镰状细胞病;聚合;Fe2+/Fe3 +比值;atp酶的活动
{"title":"Amino Acids Extract from Black Bean Seeds (Phaseolus Vulgaris L.)Inhibit Hemoglobin Polymerizationand Modulate Erythrocyte Membrane Atpases In Sickle Cell Disease (SCD)","authors":"Talla Tn, Ko Tc, J. P., Pieme Ac, Kansci G, Fokou E","doi":"10.15226/jnhfs.2020.001174","DOIUrl":"https://doi.org/10.15226/jnhfs.2020.001174","url":null,"abstract":"Back ground: The basic extracts involved in the formulation of functional foods/nutraceutics must first be the subject of preclinical and clinical trials. The several studies were shown that amino acids extract from black bean seeds (Phaseolus vulgaris L.) have antisickling, antioxidant and anti-haemolitic properties. Objective: The objective of this study is to investigate the effect of amino acids extract from black bean seeds (Phaseolus vulgaris L.) on hemoglobin polymerization and erythrocytes membrane ATPases activities in Sickle Cell Disease (SCD). Method: The ability for the amino acids extract to inhibit sickle cell hemoglobin polymerization and improve the Fe2+/Fe3+ ratio of HbSS blood were assed using spectroscopic method. The activities of three ATPases (Na+/K+; Ca2+; and Mg2+-ATPases) were investigated by the kinetic method following the release of inorganic phosphate (Pi) by ATP taking into account the determination of the total membrane proteins of erythrocytes by Bradford’s method. Result: The lowest potential of inhibition was obtained (39.98±2%) with the amino acids extract at 12 mg/mL corresponding significantly (p<0.05) to the highest potential of inhibition of polymerization (71.16±2%). The greatest Fe2+Fe3+ ratio was obtained (3.94±2%) with the amino acids extract at 12 mg/mL corresponding significantly (p<0.05) to the best rates increase of oxy-hemoglobin (48.73±2%). The red blood cells membranes ATPase activity were estimated and expressed as μmol of Pi/mg of protein/hour x 10-3 there was an increase in the activities of Na+/ K+ and Ca2+-ATPases (255.98±62 and 282.98±36 respectively) at the concentration of 12 mg/mL of extract compared to the negative control (167.36±60 and 236.91±62 respectively). However, for Mg2+-ATPase, there is rather a significant reduction (p<0.05) in this activity (286.71±51 against 146.53±35) obtained in the presence of the amino acid extract at 12 mg/mL). Conclusion: The amino acids extract of black bean seeds (Phaseolus vulgaris L.) at a concentration of 12 mg/mL offered the best inhibition potentials of hemoglobin S polymerization, increase rates of oxyhemoglobin and the best ATPasic activities. Keywords: Amino acid extracts; black bean seeds; sickle cell disease; polymerization; Fe2+/Fe3 + ratio; ATPase activities","PeriodicalId":366384,"journal":{"name":"Journal of Nutritional Health &amp; Food Science","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130753527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Continuous and Discontinuous Adherence to the Sticky Japanese Diet on Adiponectin and Leptin Regulation 连续和间断坚持粘性日本饮食对脂联素和瘦素调节的影响
Pub Date : 2020-03-09 DOI: 10.15226/jnhfs.2020.001171
Y. Hirokawa, N. Izumo, Shogo Tawara, Saki Aihara, R. Obara, Tomomi Shimazu, K. Tsuzuki, Yasuo Watanabe
Background: In order to evaluate the regulational role of adiponectin and leptin on obesity, we examined the significance of daily adherence to the Sticky Japanese Diet (SJD) on the preventions of obesity and metabolic syndrome by assessing the fat adiponectin/leptin and plasma leptin levels using normal and high-fat diet (HFD) mice. Methods: Five-week-old male ICR strain mice were placed in individual cages and randomly divided into eight groups based on feeding of SJD or not. At the end of each treatment period, plasma triglyceride, cholesterol, and leptin levels were measured by biochemical analysis. The adiponectin and leptin levels in adipose tissue were measured using RT-PCR. Results: In normal mice, an eight-week treatment of SJD increased adiponectin levels in adipose tissue. However, four weeks after discontinuing the SJD, these levels decreased. Furthermore, continuous feeding of the SJD for eight weeks increased plasma leptin levels but not that of adipose tissue. And then, discontinuing the SJD for more than eight days resulted in a decrease in plasma leptin levels. In HFD mice, an increase in body weight and visceral fat was seen at eight days after discontinuing the SJD which was undertaken for a total of eight weeks. At this time, the plasma leptin levels in these mice were substantially higher than in normal mice, although these levels were getting to be decreased over four weeks. Conclusion: This study revealed that discontinuous adherence to the SJD induced decreases in both adiponectin and leptin levels. Together with our previous publication, this paper suggests that daily adherence to the SJD might be essential for maintaining good health. Keywords: NuruNeba (Sticky Japanese Diet); Washoku (Japanese foods); normal diet; high-fat diet; leptin; adiponectin; obesity; mice Abbreviations: SJD: Sticky Japanese Diet; HFD: High-Fat Diet; CE-2: CLEA Rodent Diet CE-2; TG: Triglyceride; UCP1: Uncoupling Protein-1; BAT: Brown Adipose Tissue
背景:为了评估脂联素和瘦素对肥胖的调节作用,我们通过评估正常和高脂饮食(HFD)小鼠的脂肪脂联素/瘦素和血浆瘦素水平,研究了每日坚持粘性日本饮食(SJD)对肥胖和代谢综合征预防的意义。方法:将5周龄雄性ICR系小鼠单独饲养,按是否饲喂SJD随机分为8组。在每个治疗期结束时,通过生化分析测量血浆甘油三酯、胆固醇和瘦素水平。采用RT-PCR检测脂肪组织中脂联素和瘦素水平。结果:在正常小鼠中,8周的SJD治疗增加了脂肪组织中的脂联素水平。然而,停用SJD四周后,这些水平下降。此外,连续喂养8周的SJD增加了血浆瘦素水平,但没有增加脂肪组织。然后,停用SJD超过8天导致血浆瘦素水平下降。在HFD小鼠中,在停用SJD共8周后的第8天,体重和内脏脂肪增加。此时,这些小鼠的血浆瘦素水平明显高于正常小鼠,尽管这些水平在四周内逐渐下降。结论:本研究表明,不连续坚持SJD会导致脂联素和瘦素水平降低。与我们之前的出版物一起,这篇论文表明,每天坚持SJD可能对保持良好的健康至关重要。关键词:粘性日粮;和食(日本食品);正常饮食;高脂肪饮食;瘦素;脂联素;肥胖;缩写词:SJD:粘性日本饮食;HFD:高脂肪饮食;CE-2: CLEA啮齿动物饲料CE-2;TG:甘油三酸酯;UCP1:解偶联蛋白1;BAT:棕色脂肪组织
{"title":"Continuous and Discontinuous Adherence to the Sticky Japanese Diet on Adiponectin and Leptin Regulation","authors":"Y. Hirokawa, N. Izumo, Shogo Tawara, Saki Aihara, R. Obara, Tomomi Shimazu, K. Tsuzuki, Yasuo Watanabe","doi":"10.15226/jnhfs.2020.001171","DOIUrl":"https://doi.org/10.15226/jnhfs.2020.001171","url":null,"abstract":"Background: In order to evaluate the regulational role of adiponectin and leptin on obesity, we examined the significance of daily adherence to the Sticky Japanese Diet (SJD) on the preventions of obesity and metabolic syndrome by assessing the fat adiponectin/leptin and plasma leptin levels using normal and high-fat diet (HFD) mice. Methods: Five-week-old male ICR strain mice were placed in individual cages and randomly divided into eight groups based on feeding of SJD or not. At the end of each treatment period, plasma triglyceride, cholesterol, and leptin levels were measured by biochemical analysis. The adiponectin and leptin levels in adipose tissue were measured using RT-PCR. Results: In normal mice, an eight-week treatment of SJD increased adiponectin levels in adipose tissue. However, four weeks after discontinuing the SJD, these levels decreased. Furthermore, continuous feeding of the SJD for eight weeks increased plasma leptin levels but not that of adipose tissue. And then, discontinuing the SJD for more than eight days resulted in a decrease in plasma leptin levels. In HFD mice, an increase in body weight and visceral fat was seen at eight days after discontinuing the SJD which was undertaken for a total of eight weeks. At this time, the plasma leptin levels in these mice were substantially higher than in normal mice, although these levels were getting to be decreased over four weeks. Conclusion: This study revealed that discontinuous adherence to the SJD induced decreases in both adiponectin and leptin levels. Together with our previous publication, this paper suggests that daily adherence to the SJD might be essential for maintaining good health. Keywords: NuruNeba (Sticky Japanese Diet); Washoku (Japanese foods); normal diet; high-fat diet; leptin; adiponectin; obesity; mice Abbreviations: SJD: Sticky Japanese Diet; HFD: High-Fat Diet; CE-2: CLEA Rodent Diet CE-2; TG: Triglyceride; UCP1: Uncoupling Protein-1; BAT: Brown Adipose Tissue","PeriodicalId":366384,"journal":{"name":"Journal of Nutritional Health &amp; Food Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126027373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of the Effects of Cucurbitaceae Seeds Oils and Refined Palm Oil in the Prevention of Cardiovascular Disease Risk 葫芦科种子油与精制棕榈油预防心血管疾病风险的比较
Pub Date : 1900-01-01 DOI: 10.15226/jnhfs.2022.001187
H. Ouattara, Donatien Albert Atsamo, B. Ouattara, Vazoumana Koné, Seraphin Kati Coulibaly
Palm oil, the most oil consumed in the world, because of its high saturated fatty acid content, is nowadays recognized to enhance Cardiovascular disease risk (CVD). In this study, we sought to propose Cucurbitaceae seeds oils (CSO) as reducing CVD risk and a good source of income. Then, physicochemical parameters, composition and nutritional value of Citrullus lanatus seeds oil (HCL), Lagenaria siceraria seeds oil (HLS), Cucumeropsis mannii seeds oil (HCM) were compared to that of Refined palm oil (RPO) and among them. Four diets, conformed to that proposed by AIN-93G but differing to the oil, were formulated by using one of the CSO extracted or RPO. These diets served to feed four homogeneous groups of young rats (six per group) during 45 days. Diets consumption and efficacy were evaluated. Blood sample, collected at the end of the experimentation, were used to measure out heamatological parameters, glyceamia, urea, creatinine, lipids parameters, Aspartate Aminotransferase, Alanine Aminine Transferase, sodium and calicium. Peroxide index and specific gravity were in accordance to the norm. Free fatty acid content of RPO and HLS were in the norm but acid values of the fourth oils were lower than the safe limit for consumption. Grading of most unsaturated fatty acid content was HCL, HCM, RPO and HLS respectively. Plasma parameters, organ weight and the coefficients calculated were not different (p > 0.05) to each other, but according to atherogenicity index, the grading of high inducing cardiovascular disease was HCM, RPO, HCL and HLS respectively. Without no technological treatment CSO compete with RPO. There are possibility that refined CSO reduced CDV than RPO. Keywords: Citrullus lanatus seeds oil ; Refined palm oil ; Physicochemical parameters ; Composition ; Nutritional value ; Cardiovascular disease risk; Rat Abbreviations CVD: Cardiovascular Disease Risk ; CSO: Cucurbitaceae Seeds Oils; RPO: Refined Palm Oil; HDI: Refined palm oil « Dinor »; HLS: Lagenaria siceraria seeds oil ; HCL: Citrullus lanatus seeds oil; HCM: Cucumeropsis mannii seeds oil; RHDI: Diet in which oil used is refined palm oil; RHCL: Diet in which oil used is Citrulus lanatus oil; RHLS: Diet in which oil used is Lagenaria siceraria oil; RHCM: Diet in which oil used is Cucumeropsis mannii oil; RHDI: Diet in which oil used is refined palm oil; RHCL: Diet in which oil used is Citrulus lanatus oil; RHLS: Diet in which oil used is Lagenaria siceraria oil; RHCM: Diet in which oil used is Cucumeropsis mannii oil; ASAT: Aspartate Aminotransferase; ALAT: Alanine Aminine Transferase
棕榈油是世界上消费最多的油,由于其高饱和脂肪酸含量,目前被认为会增加心血管疾病的风险。在这项研究中,我们试图提出葫芦科种子油(CSO)作为降低心血管疾病风险和良好的收入来源。然后,比较了甜瓜籽油(HCL)、麻瓜籽油(HLS)、曼氏黄瓜籽油(HCM)与精制棕榈油(RPO)的理化参数、组成及营养价值。用提取的CSO或RPO中的一种配制了符合AIN-93G建议但与油不同的四种饲粮。这些饮食在45天内喂养四组同质的幼鼠(每组6只)。评估饮食消耗和疗效。实验结束后采集血液,测定血液学参数、血糖、尿素、肌酐、血脂参数、天冬氨酸转氨酶、丙氨酸转氨酶、钠和钙。过氧化指数和比重符合标准。RPO和HLS的游离脂肪酸含量符合标准,但第4种油的酸值低于食用安全限量。大部分不饱和脂肪酸含量分别为HCL、HCM、RPO和HLS。血浆参数、脏器重量及计算系数差异无统计学意义(p > 0.05),但根据致动脉粥样硬化指数,高诱发性心血管疾病的分级分别为HCM、RPO、HCL和HLS。在没有技术处理的情况下,CSO与RPO竞争。精制CSO可能比RPO更能降低CDV。关键词:瓜籽油;精制棕榈油;理化参数;组成;营养价值;心血管疾病风险;CVD:心血管疾病风险;CSO:葫芦科种子油;RPO:精炼棕榈油;人类发展指数:精炼棕榈油«Dinor»;HLS:木槿花籽油;HCL:瓜籽油;HCM:甘露黄瓜籽油;RHDI:使用精炼棕榈油的饮食;RHCL:用油为香瓜油的日粮;RHLS:用油为木槿花油的日粮;RHCM:用油为甘露黄瓜油的日粮;RHDI:使用精炼棕榈油的饮食;RHCL:用油为香瓜油的日粮;RHLS:用油为木槿花油的日粮;RHCM:用油为甘露黄瓜油的日粮;ASAT:天冬氨酸转氨酶;ALAT:丙氨酸氨基转移酶
{"title":"Comparison of the Effects of Cucurbitaceae Seeds Oils and Refined Palm Oil in the Prevention of Cardiovascular Disease Risk","authors":"H. Ouattara, Donatien Albert Atsamo, B. Ouattara, Vazoumana Koné, Seraphin Kati Coulibaly","doi":"10.15226/jnhfs.2022.001187","DOIUrl":"https://doi.org/10.15226/jnhfs.2022.001187","url":null,"abstract":"Palm oil, the most oil consumed in the world, because of its high saturated fatty acid content, is nowadays recognized to enhance Cardiovascular disease risk (CVD). In this study, we sought to propose Cucurbitaceae seeds oils (CSO) as reducing CVD risk and a good source of income. Then, physicochemical parameters, composition and nutritional value of Citrullus lanatus seeds oil (HCL), Lagenaria siceraria seeds oil (HLS), Cucumeropsis mannii seeds oil (HCM) were compared to that of Refined palm oil (RPO) and among them. Four diets, conformed to that proposed by AIN-93G but differing to the oil, were formulated by using one of the CSO extracted or RPO. These diets served to feed four homogeneous groups of young rats (six per group) during 45 days. Diets consumption and efficacy were evaluated. Blood sample, collected at the end of the experimentation, were used to measure out heamatological parameters, glyceamia, urea, creatinine, lipids parameters, Aspartate Aminotransferase, Alanine Aminine Transferase, sodium and calicium. Peroxide index and specific gravity were in accordance to the norm. Free fatty acid content of RPO and HLS were in the norm but acid values of the fourth oils were lower than the safe limit for consumption. Grading of most unsaturated fatty acid content was HCL, HCM, RPO and HLS respectively. Plasma parameters, organ weight and the coefficients calculated were not different (p > 0.05) to each other, but according to atherogenicity index, the grading of high inducing cardiovascular disease was HCM, RPO, HCL and HLS respectively. Without no technological treatment CSO compete with RPO. There are possibility that refined CSO reduced CDV than RPO. Keywords: Citrullus lanatus seeds oil ; Refined palm oil ; Physicochemical parameters ; Composition ; Nutritional value ; Cardiovascular disease risk; Rat Abbreviations CVD: Cardiovascular Disease Risk ; CSO: Cucurbitaceae Seeds Oils; RPO: Refined Palm Oil; HDI: Refined palm oil « Dinor »; HLS: Lagenaria siceraria seeds oil ; HCL: Citrullus lanatus seeds oil; HCM: Cucumeropsis mannii seeds oil; RHDI: Diet in which oil used is refined palm oil; RHCL: Diet in which oil used is Citrulus lanatus oil; RHLS: Diet in which oil used is Lagenaria siceraria oil; RHCM: Diet in which oil used is Cucumeropsis mannii oil; RHDI: Diet in which oil used is refined palm oil; RHCL: Diet in which oil used is Citrulus lanatus oil; RHLS: Diet in which oil used is Lagenaria siceraria oil; RHCM: Diet in which oil used is Cucumeropsis mannii oil; ASAT: Aspartate Aminotransferase; ALAT: Alanine Aminine Transferase","PeriodicalId":366384,"journal":{"name":"Journal of Nutritional Health &amp; Food Science","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126328403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Oxidants and Antioxidants Synergistically Activate Immuno-Responses During Tumorgenesis 氧化剂和抗氧化剂在肿瘤发生过程中协同激活免疫反应
Pub Date : 1900-01-01 DOI: 10.15226/jnhfs.2021.001185
Kui Yuan, Wei-Ling Liu, W. Guo, Lili Zhang, Yawei Liu, Ming Zhao
The human immune system possesses powerful surveillance functions to find and eliminate tumor cells. Several steps are involved, such as uptake and presentation of tumor antigens by dendritic cells (DCs) in order to activate T cells, trafficking and infiltration of the tumor with T cells and, finally, recognition and killing of tumor cells. Tumor cells release a number of soluble mediators that may disrupt these steps, thereby creating tolerance or immune escape. We previously published data on a rat animal model showing 1, 2-dimethylhydrazine (DMH) to inhibit DCs activation and enhance T regulatory cells (Treg) expression, ultimately inducing colon carcinogenesis. By feeding rats with mustard seeds (MS), the animals’ immune system shifted from a Th2 to a Th1 pattern, Tregs were inhibited and DCs activation enhanced. In the present study, we tried to isolate the functional fractions of MS and, to our surprise, we found that the oxidant and antioxidant fractions of MS showed synergistic effect on the activation of DCs and CD8+ effector T cells. Neither of the fractions alone, however, had any inhibitory effect on DMH-induced colon carcinogenesis. Differently from the antioxidant fraction, the oxidant fraction activated DCs (CD11c+CD80+, CD11c+CD86+), but not the CD8+ effector T cells. By adding Vitamin E, an acknowledged antioxidant, the oxidant fraction then became able to activate both spleenic DCs and effector T cells (CD8+CD28+). Taken together, these data suggest that the MS oxidant fraction might play an important role in activation of DCs, while also showing that oxidative signals may induce depletion of effector T cells. Addition of the antioxidant MS fraction, or Vitamin E, might restore the survival of effector T cells and eventually help eradicate tumor cells. Thus, MS oxidants, which normally are regarded as having negative effects, may actually function synergistically with antioxidants to prevent chemical-induced carcinogenesis. Keywords: Oxidants; Antioxidants; Immuno-responses; Mustard seeds; Colorectal cancer; Chemoprevention; T cells; Dendritic cells Abbreviations: AITC: Allyl Isothiocyanate; APCs: Antigen-Presenting Cells; CTLs: Cytotoxic T Lymphocytes; DCs: Dendritic Cells; DMH: 1, 2-Dimethylhydrazine; EGCG: Epigallocatechin Gallate; LPO: Lipid Peroxides ; MDA: Malondialdehyde; MHC: Major Histocompatibility Complex; MS: Mustard Seeds; MSE1: Ether Extract of Mustard Seeds; MSE2: Ethanolic Extract of Mustard Seeds; PBS: Phosphate-Buffered Saline; RBC: Red Blood Cell; ROS: Reactive Oxygen Species; TCRs: T Cell Receptors; Treg : T Regulatory Cells; VitE : Vitamin E
人体免疫系统具有发现和消灭肿瘤细胞的强大监视功能。这涉及到几个步骤,例如由树突状细胞(dc)摄取和呈递肿瘤抗原以激活T细胞,用T细胞运输和浸润肿瘤,最后识别和杀死肿瘤细胞。肿瘤细胞释放许多可溶性介质,这些介质可能破坏这些步骤,从而产生耐受性或免疫逃逸。我们之前在大鼠动物模型上发表的数据显示,1,2 -二甲基肼(DMH)抑制DCs激活并增强T调节细胞(Treg)表达,最终诱导结肠癌发生。通过给大鼠喂食芥菜籽(MS),动物的免疫系统从Th2模式转变为Th1模式,Tregs被抑制,dc激活增强。在本研究中,我们试图分离MS的功能部分,令我们惊讶的是,我们发现MS的氧化和抗氧化部分对DCs和CD8+效应T细胞的激活具有协同作用。然而,这两种组分单独对dmh诱导的结肠癌发生没有任何抑制作用。与抗氧化部分不同,氧化部分激活dc (CD11c+CD80+, CD11c+CD86+),但不激活CD8+效应T细胞。通过添加维生素E(一种公认的抗氧化剂),氧化部分能够激活脾脏dc和效应T细胞(CD8+CD28+)。综上所述,这些数据表明MS氧化部分可能在DCs的激活中起重要作用,同时也表明氧化信号可能诱导效应T细胞的消耗。添加抗氧化MS部分或维生素E,可能恢复效应T细胞的存活,并最终帮助根除肿瘤细胞。因此,通常被认为具有负面作用的MS氧化剂实际上可能与抗氧化剂协同作用,以防止化学诱导的致癌作用。关键词:氧化剂;抗氧化剂;免疫反应;芥菜籽;结直肠癌;化学预防;T细胞;树突状细胞缩写:AITC:异硫氰酸烯丙酯;APCs:抗原呈递细胞;ctl:细胞毒性T淋巴细胞;dc:树突状细胞;DMH: 1,2 -二甲基肼;EGCG:没食子儿茶素没食子酸酯;脂质过氧化物;MDA:丙二醛;MHC:主要组织相容性复合体;MS:芥菜籽;MSE1:芥菜籽醚提取物;MSE2:芥菜籽乙醇提取物;PBS:磷酸盐缓冲盐水;RBC:红细胞;活性氧(ROS);TCRs: T细胞受体;Treg: T调节性细胞;维:维生素E
{"title":"Oxidants and Antioxidants Synergistically Activate Immuno-Responses During Tumorgenesis","authors":"Kui Yuan, Wei-Ling Liu, W. Guo, Lili Zhang, Yawei Liu, Ming Zhao","doi":"10.15226/jnhfs.2021.001185","DOIUrl":"https://doi.org/10.15226/jnhfs.2021.001185","url":null,"abstract":"The human immune system possesses powerful surveillance functions to find and eliminate tumor cells. Several steps are involved, such as uptake and presentation of tumor antigens by dendritic cells (DCs) in order to activate T cells, trafficking and infiltration of the tumor with T cells and, finally, recognition and killing of tumor cells. Tumor cells release a number of soluble mediators that may disrupt these steps, thereby creating tolerance or immune escape. We previously published data on a rat animal model showing 1, 2-dimethylhydrazine (DMH) to inhibit DCs activation and enhance T regulatory cells (Treg) expression, ultimately inducing colon carcinogenesis. By feeding rats with mustard seeds (MS), the animals’ immune system shifted from a Th2 to a Th1 pattern, Tregs were inhibited and DCs activation enhanced. In the present study, we tried to isolate the functional fractions of MS and, to our surprise, we found that the oxidant and antioxidant fractions of MS showed synergistic effect on the activation of DCs and CD8+ effector T cells. Neither of the fractions alone, however, had any inhibitory effect on DMH-induced colon carcinogenesis. Differently from the antioxidant fraction, the oxidant fraction activated DCs (CD11c+CD80+, CD11c+CD86+), but not the CD8+ effector T cells. By adding Vitamin E, an acknowledged antioxidant, the oxidant fraction then became able to activate both spleenic DCs and effector T cells (CD8+CD28+). Taken together, these data suggest that the MS oxidant fraction might play an important role in activation of DCs, while also showing that oxidative signals may induce depletion of effector T cells. Addition of the antioxidant MS fraction, or Vitamin E, might restore the survival of effector T cells and eventually help eradicate tumor cells. Thus, MS oxidants, which normally are regarded as having negative effects, may actually function synergistically with antioxidants to prevent chemical-induced carcinogenesis. Keywords: Oxidants; Antioxidants; Immuno-responses; Mustard seeds; Colorectal cancer; Chemoprevention; T cells; Dendritic cells Abbreviations: AITC: Allyl Isothiocyanate; APCs: Antigen-Presenting Cells; CTLs: Cytotoxic T Lymphocytes; DCs: Dendritic Cells; DMH: 1, 2-Dimethylhydrazine; EGCG: Epigallocatechin Gallate; LPO: Lipid Peroxides ; MDA: Malondialdehyde; MHC: Major Histocompatibility Complex; MS: Mustard Seeds; MSE1: Ether Extract of Mustard Seeds; MSE2: Ethanolic Extract of Mustard Seeds; PBS: Phosphate-Buffered Saline; RBC: Red Blood Cell; ROS: Reactive Oxygen Species; TCRs: T Cell Receptors; Treg : T Regulatory Cells; VitE : Vitamin E","PeriodicalId":366384,"journal":{"name":"Journal of Nutritional Health &amp; Food Science","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116636804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Journal of Nutritional Health &amp; Food Science
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1