Pharmacological effect of Rubus ulmifolius Schott as antihyperglycemic and antihyperlipidemic on streptozotocin (STZ)-induced albino mice

Akhtar, Khalil; Shah, Syed Wadood Ali; Shah, Assar Ali; Shoaib, Muhammad; Haleem, Kashif Syed; Sultana, Nighat

doi:10.1007/s13765-017-0293-9

Cited by 11 publications

(7 citation statements)

References 35 publications

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“…Though glycosides, arctiin (2) and matairesinoside (4), increased a little PI size comparing with AL-induced groups, there was no statistical significance. However, aglycones, arctigenin (1) and matairesinol (3), significantly increased PI size by 38.53% (p = 0.0014) and 45.19% (p = 0.0001), respectively ( Fig. 2a, c), showing similar recovery effects to those observed in the group treated with the positive control, glimepiride.…”

Section: Resultssupporting

confidence: 55%

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Recovery effect of lignans and fermented extracts from Forsythia koreana flowers on pancreatic islets damaged by alloxan in zebrafish (Danio rerio)

et al. 2019

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Repeated column separation yielded four enterolactone type lignans from Forsythia koreana flowers (FKF), whose chemical structures were identified using several spectral technics. FKF MeOH extract (FKFM) and four lignans significantly recovered aloxan induced pancreatic islet in zebrafish. Especially, aglycones, 1 and 3, exhibited relatively higher activity than the lignan glycosides, 2 and 4. Therefore, FKFM was fermented using a Microbacterium esteraromaticum, BGP1, to yield the fermented FKFM (FKFM-BGP1). FKFM and FKFM-BGP1 were extracted using n-butanol to give n-BuOH fraction of each, FKFM-nB and FKFM-BGP1-nB, respectively. FKFM-BGP1-nB showed higher activity than FKFM-nB, as well the content of the aglycones, 1 and 3, in FKFM-BGP1-nB, 2.42 ± 0.01% and 1.15 ± 0.01%, was revealed to be much higher than that in FKFM-nB, 0.01 ± 0.01% and 0.01 ± 0.01%, respectively. In conclusion, the lignan aglycones 1 and 3 as well FKFM-BGP1-nB from F. koreana flowers were proved to be potential anti-diabetic agents. Furthermore, we suggest that antidiabetic efficacy of FKFM-BGP1-nB might be related to lignan aglycones 1 and 3.

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Section: Resultssupporting

confidence: 55%

“…Diabetes mellitus (DM), which is characterized by high blood glucose levels (hyperglycemia), is originated in disorders of insulin secretion or decrease of insulin sensitivity [1,2], which is synthesized in pancreatic islet (PI) β-cells [3]. DM is developed by decrease or dysfunction of β-cells in PI [4,5].…”

Section: Introductionmentioning

confidence: 99%

Recovery effect of lignans and fermented extracts from Forsythia koreana flowers on pancreatic islets damaged by alloxan in zebrafish (Danio rerio)

et al. 2019

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“…In particular, human beings suffer from chronic metabolic diseases and so-called adult diseases, and diabetes is the most representative of these diseases. Diabetes mellitus is a metabolic disease caused by hyperglycemia, which affects more than 400 million people worldwide [ 1 , 2 ]. Diabetes is a disease with a high concentration of glucose in the blood due to a lack of insulin secretion or poor functioning [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Aurones and Flavonols from Coreopsis lanceolata L. Flowers and Their Anti-Oxidant, Pro-Inflammatory Inhibition Effects, and Recovery Effects on Alloxan-Induced Pancreatic Islets in Zebrafish

et al. 2021

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(1) Background: Many flavonoids have been reported to exhibit pharmacological activity; a preparatory study confirmed that Coreopsis lanceolata flowers (CLFs) contained high flavonoid structure content; (2) Methods: CLFs were extracted in aqueous methanol (MeOH:H2O = 4:1) and fractionated into acetic ester (EtOAc), normal butanol (n-BuOH), and H2O fractions. Repeated column chromatographies for two fractions led to the isolation of two aurones and two flavonols; (3) Results: Four flavonoids were identified based on a variety of spectroscopic data analyses to be leptosidin (1), leptosin (2), isoquercetin (3), and astragalin (4), respectively. This is the first report for isolation of 2–4 from CLFs. High-performance liquid chromatography (HPLC) analysis determined the content levels of compounds 1–4 in the MeOH extract to be 2.8 ± 0.3 mg/g (1), 17.9 ± 0.9 mg/g (2), 3.0 ± 0.2 mg/g (3), and 10.9 ± 0.9 mg/g (4), respectively. All isolated compounds showed radical scavenging activities and recovery activities in Caco-2, RAW264.7, PC-12, and HepG2 cells against reactive oxygen species. MeOH extract, EtOAc fraction, and 1–3 suppressed NO formation in LPS-stimulated RAW 264.7 cells and decreased iNOS and COX-2 expression. Furthermore, all compounds recovered the pancreatic islets damaged by alloxan treatment in zebrafish; (4) Conclusions: The outcome proposes 1–4 to serve as components of CLFs in standardizing anti-oxidant, pro-inflammatory inhibition, and potential anti-diabetic agents.

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“…Diabetes is characterized by variations in the metabolism of carbohydrates, proteins and fats. It results from insulin secretion disorders or reduced insulin sensitivity to blood sugar levels [ 1 ]. In diabetic patients and animal models, the pancreatic islet (PI) size and β-cell number are smaller than normal [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Flavonoid 8-O-Glucuronides from the Aerial Parts of Malva verticillata and Their Recovery Effects on Alloxan-Induced Pancreatic Islets in Zebrafish

Nam

Joo

et al. 2018

Molecules

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Malva verticillata (Cluster mallow), a leafy vegetable that has been popular in East Asia for a long time, has also been used in herbal teas and medicines. The aqueous fraction of the aerial parts of Malva verticillata, exhibiting a very high quantity of flavonoids compared to the EtOAc and n-BuOH fractions, exhibited significant recovery effects on pancreatic islets damaged by alloxan in zebrafish larvae. Thus, the bioactive components responsible for this anti-diabetic activity were investigated. A new flavonoid glucuronide (1) and five known flavonoids were isolated from the aqueous fraction. Based on several spectroscopic methods, compound 1 was identified to be nortangeretin-8-O-β-d-glucuronide, and was named malvaflavone A. The A-ring of compound 1 had a 5,6,7,8-tetrahydroxy moiety, which rarely occurs in plant systems. Also 8-O-glucuronide attached to the flavonoid moiety was rarely occurred in plant system. Compounds 1, 3, 4, and 6 significantly improved the pancreatic islet size in zebrafish at 0.1 μM, and compounds 1 and 6 were found to block β-cell K+ channels in experiments with diazoxide. In ABTS, ORAC, and SOD assays, compounds 1–5 exhibited high anti-oxidant activities compared with quercetin and BHA (positive controls), indicating that the 8-O-glucuronide attached to the flavonoid moiety is a key structure for the expression of anti-oxidant activity. This is the first report of the isolation of compounds 1–6 from M. verticillata as well evaluated for anti-diabetic and anti-oxidant ativities.

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Pharmacological effect of Rubus ulmifolius Schott as antihyperglycemic and antihyperlipidemic on streptozotocin (STZ)-induced albino mice

Cited by 11 publications

References 35 publications

Recovery effect of lignans and fermented extracts from Forsythia koreana flowers on pancreatic islets damaged by alloxan in zebrafish (Danio rerio)

Recovery effect of lignans and fermented extracts from Forsythia koreana flowers on pancreatic islets damaged by alloxan in zebrafish (Danio rerio)

Aurones and Flavonols from Coreopsis lanceolata L. Flowers and Their Anti-Oxidant, Pro-Inflammatory Inhibition Effects, and Recovery Effects on Alloxan-Induced Pancreatic Islets in Zebrafish

Flavonoid 8-O-Glucuronides from the Aerial Parts of Malva verticillata and Their Recovery Effects on Alloxan-Induced Pancreatic Islets in Zebrafish

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