Xin Xue-Lei

• Professor
• Chinese Academy of Sciences

Diabetic retinopathy (DR) is a specific microvascular problem of diabetes, which is mainly caused by hyperglycemia and may lead to rapid vision loss. Dietary polyphenols have been reported to decrease the risk of DR. Apocynum venetum L. leaves are rich in polyphenolic compounds and are popular worldwide for their health benefits as a national tea d...

Neuroinflammation is a causative factor in neurodegenerative diseases such as Parkinson's disease, Alzheimer's disease and amyotrophic lateral sclerosis. Previous studies have shown that Artemisia mongolica has anti-inflammatory properties. Aschantin (AM3) has been shown to have anti-inflammatory effects. However, the mechanism of AM3 and its epime...

Introduction Fungal species are an attractive resource for physiologically functional food and drug precursor. Fomes officinalis Ames, a medicinal fungus, is traditionally used as a folk medicine in traditional Chinese medicine prescription for the therapy of cough and asthma. The water‐soluble substances in Chinese herbal medicines are likely to p...

In the current study, the lipophilic solvent ( n ‐hexane) extraction, steam distillation (SD) and supercritical CO 2 fluid extraction (SC–CO 2 ) methods were used to extract the volatile components of Mentha asiatica Boriss. Comparisons were made between the extraction yield, chemical component and biological activity. Gas chromatography quadrupole...

Background Xuelian granule (XL), a traditional Chinese medicine (TCM) formula, has been used for the treatment of diabetic nephropathy for a long time as a hospital preparation. Because the active ingredients in the XL that can help to treat diabetic nephropathy are still unclear, which limits the interpretation for its pharmacological mechanism, f...

Matricarla chamomilla L. is native to European countries and widely cultivated in China, especially in Xinjiang. It has been used in Uygur medicine for the treatment of cough caused by asthma. In this study, UHPLC-Q-Orbitrap-MS was used to detect and identify the components from the active fraction of M. Chamomile, 64 compounds were identified by c...

The phytochemical study of Limonium gmelinii roots resulted in the isolation of five lignanamides (1-5). Among them, limoniumins J, K, and M (1, 2, and 4) are undescribed compounds, limoniumin L (3) is a new naturally occurring lignanamide, and limoniumin B (5) is a known compound which showed PTP1B inhibition activity with an IC50 value of 5.05 ±...

Seven previously undescribed guaianolides, millefolactons A-G, and three known analogues, millefoliumins A-C, were isolated from the whole plant of Achillea millefolium L. growing in Xinjiang, China. Their structures were elucidated using the HR-ESI-MS and NMR data analyses. The absolute configurations of millefolactons A-G were determined by singl...

Piper longum is a well‐known spice and traditional medicine. It was revealed to possess anti‐diabetic activity, but few information about its active component and underlying mechanism could be available. In this study, retrofractamides A (1) and C (2) isolated from P. longum showed potent inhibitory activity against PTP1B. Therefore, the potential...

This study aimed to investigate the anti‐inflammatory activity of Prunus cerasifera Ehrhart (EHP). LC–MS/MS, network pharmacology, enzyme‐linked immunosorbent assay (ELISA), and Western blot analysis methods were used to investigate the chemical composition and the anti‐inflammatory mechanism of EHP. The LC–MS/MS results showed that flavonoids and...

Elaeagnus angustifolia Linnaeus is a medicinal plant and its fruit has pharmacological activity such as antiinflammatory, antiedema, antinociceptive, and muscle relaxant functions, etc. Two acidic homogeneous polysaccharides (EAP-H-a1 and EAP-H-a2) were isolated from the fruits of Elaeagnus angustifolia L. through DEAE-52 and Sephadex G-75 column c...

Apocynum venetum L. flowers are the source of beverage and primary nectar with potential industrial value but have received less attention. This study aimed to investigate its processing, chemical characterization and quality evaluation of the potential antidiabetic activity. Compared with heat reflux extraction, the ultrasound-assisted extraction...

Ethnopharmacological relevance: Chamomile (Matricaria chamomilla L.) is a popular herbal tea for the treatment of hepatitis and cholecystitis in traditional Uygur medicines. Aim of the study: To investigate the anti-inflammatory activity and chemical composition of M. chamomilla, and clarify its molecular mechanism. Materials and methods: M. c...

This work aimed to develop and evaluate a post-acquisition data processing strategy, referred to as a mass defect filter (MDF), for rapid target the resin glycosides in root of Convolvulus scammonia by setting mass rang and mass defect range from high-resolution MS data. The full-scan mass data were acquired by high-performance liquid chromatograph...

Vitiligo is a stubborn multifactorial skin disease with a prevalence of approximately 1% in the global population. Kaliziri, the seeds of Vernonia anthelmintica (L.) Willd., is a well-known traditional Uyghur medicine for the treatment of vitiligo. Kaliziri injections is a Chinese-marketed treatment approved by the China Food and Drug Administratio...

Shabyar (SBA) is a traditional medicine formula for relieving vision loss caused by factors including diabetic retinopathy (DR) in clinics. However, the mechanism of it on retina protective effect still unclear. The present study aimed to investigate whether its protective effect was related to aldose reductase (AR) inhibition and retinal pigment e...

Ethnopharmacological relevance Anchusa italica Retz. (Boraginaceae) is an important medicinal plant for the treatment of meningitis and pneumonia in traditional Uygur medicines. Aim of the study To clarify the anti-inflammatory activity of A. italica, to reveal its molecular mechanisms, and to discover the anti-inflammatory active ingredients. Ma...

The polysaccharide composition of dried bulbs of Orchis mascula (L.) L. is reported. The obtained polysaccharides were studied as sulfate derivatives, were called SP-S, and were purified by ion-exchange chromatography over a column of DEAE 650M to afford four fractions. Homogeneous polysaccharides were obtained by purifying these fractions using a...

Alhagi pseudalhagi Desv. Extract (APE) is the major active fraction extracted from the aerial part of Alhagi pseudalhagi Desv. In view of its application in Uyghur medicine, it may be beneficial for the treatment of ulcerative colitis (UC). The aim of the present study was to investigate the possible beneficial effects of APE on UC mice and detect...

Hyssopus cuspidatus is a famous spice and an aromatic vegetable. Few information could be available concerning its non-volatile chemical composition and bioactivities. Preliminary bioactive evaluations on the crude ethanol extract and its four fractions disclosed that the ethyl acetate fraction (EAF) exhibited antioxidant and antimicrobial bioactiv...

Kursi Wufarikun Ziyabit (KWZ) is a classic traditional medicine used for the prevention treatment of diabetes in China. It was widely used as healthcare tea in folk and can prevent and treat type 2 diabetes. However, the underlying mechanism of KWZ in type 2 diabetes has not been investigated extensively. Here, the weekly body weight and blood gluc...

The chemical composition of hazelnut kernels (Corylus avellana L.) and their COX-2 inhibitory, antimicrobial, and 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical-scavenging activities were investigated. Six previously undescribed indoleacetic acid glycosides, hazelnutins A-F (1-6), and...

Nine undescribed lignanamides, limoniumins A−I, together with ten known lignanamides and two known phenolics were isolated from ethyl acetate extract of the roots of Limonium gmelinii (Plumbaginaceae). Their structures were determined by spectroscopic analysis including 1D and 2D NMR and HRESIMS experiments. Limoniumin A is the first hybrid lignana...

In this study, an iron-doped metal-organic framework (MOF) Fe/ZIF-8 was synthesized from ZIF-8 at room temperature. Direct carbonization of Fe/ZIF-8 under a nitrogen atmosphere produced nanoporous nitrogen doped carbon nanoparticles decorated with Fe component (Fe/NC). The Fe/NC exhibited a large surface area (1221.185 m² g⁻¹) and narrow pore-size...

Background Dry skin is a common skin condition caused by reduction of water‐holding capacity, which is regulated by skin barrier function. Dry skin can also be a symptom that indicates a more serious diagnosis. There are a number of moisturizers on the market, which play an important role in dermatologic and cosmetic therapies. However, the demand...

The herbal medicine of Kursi Wufarikun Ziyabit contains two herbs ( Geranium collinum Steph.ex Willd and Hypericum Scabrum Lnn) in the formula of ethnomedicine. It is usually used in the treatment of diabetes mellitus with a significant therapeutic efficacy. However, the molecular mechanism remains unknown for the action of medicine. In this study,...

Objective: To evaluate the hepatoprotective mechanism of Xwak granule (Xwak) in treatment of mice with alcoholic liver injury via activating ERK/NF-κB and Nrf/HO-1 signaling pathways. Methods: The chemical composition of Xwak was tested by liquid chromatography coupled with mass spectrometry (LC-MS). Herein, 1,1-diphenyl-2-picrylhydrazyl (DPPH)...

Objective Asthma is a chronic immune disease that has become a serious public health problem. The currently available medications are not ideal because of their limitations and side effects; hence, new target proteins and signaling cascades for precise and safe therapy treatment are needed. This work established an ovalbumin-induced asthma rat mode...

Plants of Cichorium genus are famous for their therapeutic and medicinal properties. They are used as traditional medicine and edible food. Hitherto, a large amount of compounds, including coumarins, flavonoids, sesquiterpenoids, triterpenoids, steroids, organic acids and other chemical constituents, have been obtained. Pharmacological effects such...

In this study, the method for detection of chloramphenicol was investigated by electrochemical sensor; the sensor was constructed by biomass derived porous carbon. At first, porous carbon doped with hetroatoms (nitrogen, sulfur, phosphorus) was synthesized based on the use of pyrolysis and high temperature carbonization methods. Elaeagnusangustifol...

The pathogenesis of acute liver injury has been plagued by biologists and physicians. We know little about its therapeutic mechanism. Therefore, this study explored the mechanism of bifendate and muaddil sapra in the treatment of acute liver injury. Firstly, co-expression and cluster analysis of disease-related genes were carried out, and the Go fu...

Type 2 diabetes mellitus (T2DM) is the most common type of diabetes with more than hundreds of millions of patients worldwide. However, the medicines for treatment of T2DM are very limited. In China, Punica granatum L. flower (PGF) has been used as an anti-diabetic herb in the herbal medicine. The activity involves in improvement of insulin sensiti...

Kursi Wufarikun Ziyabit (KWZ) is a traditional prescription that used in folk tea drinking for its health care effect in treatment of type 2 diabetes mellitus (T2DM) in central Asia. However, the underlying mechanism of KWZ in T2DM has not been investigated extensively. This study designed to observe the effect of KWZ on glucose consumption and ass...

Fifteen new piperidine derivatives, pyracyclumines A–J (1–10), including five pairs of enantiomers, (+)-1/(−)-1 to (+)-5/(−)-5, together with three known compounds, agrocybenine (11), 4,6,6-trimethyl-5,6-dihydro-2(1H)-pyridone (12), and 3,5,5-trimethyl-1,5-dihydro-2H-pyrrol-2-one (13), were isolated from the roots of Anacyclus pyrethrum. Pyracyclum...

A new fatty acid ester (1) and seven known phenolic compounds, i.e. salfredin B11 (2), nigephenol C (3), nigephenol B (4), acetovanillion (5), p-hydroxybenzoic acid (6), p-hydroxy-acetophenone (7) and p-hydroxybenzaldehyde (8), were isolated from the seeds of Nigella sativa var. hispidula. Among them, compounds 5, 7 and 8 were isolated from Nigella...

By using extraction yield, total polyphenolic content, antidiabetic activities (PTP-1B and í µí»¼-glycosidase), and antioxidant activity (ABTS and DPPH) as indicated markers, the extraction conditions of the prescription Kursi Wufarikun Ziyabit (KWZ) were optimized by response surface methodology (RSM). Independent variables were ethanol concentrat...

Two new alkaloids, nigellisoquinomine (1) with a novel pyrrolo-isoquinoline skeleton, and nigellapyrrolidine (2) possessing a rare glycosylated pyrrolidine moiety, together with two known alkaloids, agrocybenine (3) and 4,6,6-trimethyl-3,4-epoxypiperidin-2-one (4), were isolated from the seeds of Nigella glandulifera Freyn. Their structures were id...

Ethnopharmacological relevance: Rosa rugosa Thunb is traditional Uygur medicine, it is widely used for regulating blood condition, nourishing liver and gallbladder in Uygur ancient prescription. But the mechanism of Rosa rugosa Thunb on diabetes is still unclear. In here, we studied the hypoglycemic effect and explained one probable pathway of pol...

All of the additional experimental data, including standard curve of 12 compounds (Figures S1–S12), screening test results of different proportion (Table S1) and the results of single-factor experiment (Tables S2–S6) can be found in supplementary materials.

Diabetes is a metabolic disease with the characteristic of high blood glucose (hyperglycemia). In our previous study, we found that nigelladines A-C (compounds A-C), three norditerpenoid alkaloids from the seeds of Nigella glandulifera Freyn (Ranunculaceae) exhibited protein of tyrosine phosphatase 1B (PTP1B) inhibitory activity in vitro. In the pr...

Rosa rugosa Thunb, a deciduous shrub of the genus Rosa, has been widely used to treat stomach aches, diarrhoea, pain, and chronic inflammatory disease in eastern Asia. In recent years, our research team has extensively studied the Rosa rugosa flower extract, and specifically undertook pharmacological experiments which have optimized the extraction...

Juju, a perennial herb in the family of Asteraceae is famous for its therapeutic and medicinal properties. It is used both in food, and traditional or modern medicine. Although there are 10–12 species of genus Cichorium in the world, only two of them, Cichorium intybus and Boiss. et Huet are familiar to us as medicine and edible food. Cichorium int...

A novel ellipsoid column was designed for centrifugal counter-current chromatography. Performance of the ellipsoid column with a capacity of 3.4 mL was examined with three different solvent systems composed of 1-butanol–acetic acid–water (4:1:5, v/v/v) (BAW), hexane–ethyl acetate–methanol-0.1 M HCl (1:1:1:1, v/v/v/v) (HEMH), and 12.5% (w/w) PEG1000...

Series of diethyl 2,5-diaminothiophene-3,4-dicarboxylate (DDTD) derivatives: azomethines of DDTD (2a-l) have been synthesized and screened for their anticancer, antimicrobial and anti-diabetic activities. The novel synthesized compounds were characterized by 1H, 13C NMR, MS and FT-IR analyses. All compounds were evaluated for their antiproliferativ...

Ethnopharmacological relevance: Cichorum glandulosum Boiss. et Huet is a traditional Uygur herbal medicine that has been used as a cholagogic and diuretic agent to improve liver function. However, the mechanism is not known for the liver-protective function. We investigated the antioxidant effects of plant extraction (CGE60) in vitro and in vivo,...

Three norditerpenoid alkaloids, nigelladines A-C (1-3), and one pyrroloquinoline alkaloid, nigellaquinomine (4), all possessing new skeletons with highly conjugated systems, were isolated from Nigella glandulifera. The 8aS-configuration for 1 and 2 was determined by comparison of the experimental and calculated electronic circular dichroism spectra...

Rosa rugosa flowers used as herbal medicine possess many activities. A fraction extracted by ethyl acetate exhibited strong inhibitive activity against protein tyrosine phosphatase 1B (PTP1B) in vitro. Establish an efficient method of LC coupled to quadrupole time-of-flight (QTOF) with tandem MS/MS to investigate the compositions in the active frac...

One of the main challenges in MIPs preparation is the proper MIP monolith design for water-soluble compounds due to the difficulty in satisfying the demands of both good column permeability and affinity to polar template. A new strategy of metallic pivot in a ternary porogenic system of dimethyl sulfoxide (DMSO)-dimethylformamide (DMF)-1-butyl-3-me...

A combined chromatographic method using high-speed counter-current chromatography (HSCCC) and Sephadex LH-20 chromatography was established for bioassay-guided separation and purification of water-soluble antioxidants from Carthamus tinctorius L. florets. The crude sample II obtained by an initial cleanup step on the AB-8 macroporous resin exhibite...

A sample pretreatment method using acid-base extraction was established for pH-zone-refining counter-current chromatography (CCC) to increase the yield of the target compound. As the most important step, selection of two-phase solvent system for pH-zone-refining CCC should follow some rules. One of these rules is that when pH of two-phase solvent s...

The chemical compositions of essential oils extracted by n-hexane extract (HE), petroleum ether extract (PE), dichloromethane extract (DE), and hydrodistillation (HD) from Carthamus tinctorius L. (safflower) were analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 86 compounds from four different extracts were identified, and the c...

Background Cichorium glandulosum Boiss. et Huet is used for treatment of liver disorders, and its effects are attributed to sesquiterpenes. This study aims to investigate the hepatoprotective effects of a sesquiterpene-rich fraction (SRF) from the aerial part of C. glandulosum on carbon tetrachloride (CCl4)-induced acute hepatotoxicity in mice, and...

An efficient method for bioassay-guided preparative isolation of antioxidants from the n-butanol extract of Astragalus altaicus Bunge was ingeniously developed by combination of silica gel column chromatography and high-speed counter-current chromatography. Under the bioassay-guidance of antioxidant activities, the antioxidants were gradually separ...

From an alcoholic extract 1-hydroxy-3,7-dimethoxyxanthone (1), 1,8-dihydroxy-3,7-dimethoxyxanthone (2), 1hydroxy-3,7,8-trimethoxyxanthone (3), 1,7-dihydroxy-3,8-dimethoxyxanthone (4), 7-hydroxy-3,8-dimethoxyxanthone-1-O-D-glucopyranoside (5), 8-hydroxy-3,7-dimethoxy-xanthone-1-O--D-glucopyranoside (6), 7-hydroxy-3,8dimethoxyxanthone-1-O[-D-xylosyl(...

Nigella glandulifera Freyn, an annual plant species of the family Ranunculaceae, served as a traditional Uigur medicine and food. Many researchers have reported that Nigella sativa L., which is the same genus with it, has an antidiabetic effect, the seeds oil was an activity component used as a kind of function food. In the present study, the diffe...

The four major active compositions, namely esculetin, lactucin, lactucopicrin and chlorogenic acid in seed, stem and root of the Cichorium glandulosum Boiss. et Huet that planted in Xinjiang have been quantified by HPLC. HPLC method was used, with Inertsil ODS-SP column (4.6 mm x 250 mm, 5 pm). The flow rate was 1.0 mL x min(-1). The column tempera...

Two new sesquiterpene lactones, namely 8-O-methylsenecioylaustricin (1) and epi-8α-angeloyloxycichoralexin (2), as well as a new triterpene glycoside (taraxasterol-3-O-β-D-glucoside, 3), together with the three known sesquiterpene lactones lactucin (4), lactucopicrin (5), and 11β,13-dihydrolactucin (6), were isolated from the stems of Cichorium gla...

Although the medicinal plant and food Nigella glandulifera Freyn has been researched for decades, isobenzofuranones have never been isolated before. Two isobenzofuranone derivatives and two saponins were successfully separated and purified from seeds of N. glandulifera Freyn by high-speed counter-current chromatography (HSCCC) with the optimized tw...

To investigate the chemical constituents of Ligularia xanthotricha. Silica gel column chromatography and preparative TLC were employed for the isolation and purification. The structures were identified on the basis of spectral data (IR, EI-MS, 1H-NMR, 13C-NMR, DEPT) and chemical evidence. Seven compounds were isolated and identified as follows: lup...

8β-Hydroxyeremophil-7(11)-ene-12,8α(4β,6α)-diolide was isolated from the Ligularia intermedia and characterized by MS, multi NMR and X-ray single crystal diffraction. Its crystal structure was determined as in a orthorhombic type, with space group P212121 with a=6.8519(5), b=10.7191(8), c=18.5942(14) Å, V =1365.67(18) Å3, Z=4, and the calculated de...