Publications by authors named "Yuanliang Li"

5 Publications

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Exposure to the herbicide butachlor activates hepatic stress signals and disturbs lipid metabolism in mice.

Chemosphere 2021 Jun 15;283:131226. Epub 2021 Jun 15.

College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China. Electronic address:

Butachlor is a systemic herbicide widely applied on wheat, rice, beans, and different other crops, and is frequently detected in groundwater, surface water, and soil. Therefore, it is necessary to investigate the potential adverse health risks and the underlying mechanisms of hepatotoxicity caused by exposure to butachlor in invertebrates, other nontarget animals, and public health. For this reason, a total of 20 mice were obtained and randomly divided into two groups. The experimental mice in one group were exposed to butachlor (8 mg/kg) and the mice in control group received normal saline. The liver tissues were obtained from each mice at day 21 of the trial. Results indicated that exposure to butachlor induced hepatotoxicity in terms of swelling of hepatocyte, disorders in the arrangement of hepatic cells, increased concentrations of different serum enzymes such as alkaline phosphate (ALP) and aspartate aminotransferase (AST). The results on the mechanisms of liver toxicity indicated that butachlor induced overexpression of Apaf-1, Bax, Caspase-3, Caspase-9, Cyt-c, p53, Beclin-1, ATG-5, and LC3, whereas decreases the expression of Bcl-2 and p62 suggesting abnormal processes of apoptosis and autophagy. Results on different metabolites (61 differential metabolites) revealed upregulation of PE and LysoPC, whereas downregulation of SM caused by butachlor exposure in mice led to the disruption of glycerophospholipids and lipid metabolism in the liver. The results of our experimental research indicated that butachlor induces hepatotoxic effects through disruption of lipid metabolism, abnormal mechanisms of autophagy, and apoptosis that provides new insights into the elucidation of the mechanisms of hepatotoxicity in mice induced by butachlor.
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http://dx.doi.org/10.1016/j.chemosphere.2021.131226DOI Listing
June 2021

Long-term copper exposure promotes apoptosis and autophagy by inducing oxidative stress in pig testis.

Environ Sci Pollut Res Int 2021 Jun 15. Epub 2021 Jun 15.

College of Veterinary, South China Agricultural University, Guangzhou, 510642, China.

Copper (Cu) is a heavy metal which is being used widely in the industry and agriculture. However, the overuse of Cu makes it a common environmental pollutant. In order to investigate the testicular toxicity of Cu, the pigs were divided into three groups and were given Cu at 10 (control), 125, and 250 mg/kg body weight, respectively. The feeding period was 80 days. Serum hormone results showed that Cu exposure decreased the concentrations of follicular stimulating hormone (FSH) and luteinizing hormone (LH) and increased the concentration of thyroxine (T4). Meanwhile, Cu exposure upregulated the expression of Cu transporter mRNA (Slc31a1, ATP7A, and ATP7B) in the testis, leading to increase in testicular Cu and led to spermatogenesis disorder. The Cu exposure led to an increased expression of antioxidant-related mRNA (Gpx4, TRX, HO-1, SOD1, SOD2, SOD3, CAT), along with increase in the MDA concentration in the testis. In LG group, the ROS in the testis was significantly increased. Furthermore, the apoptotic-related mRNA (Caspase3, Caspase8, Caspase9, Bax, Cytc, Bak1, APAF1, p53) and protein (Active Caspase3) and the autophagy-related mRNA (Beclin1, ATG5, LC3, and LC3B) expression increased after Cu exposure. The mitochondrial membrane potential in the testicular tissue decreased, while the number of apoptotic cells increased, as a result of oxidative stress. Overall, our study indicated that the Cu exposure promotes testicular apoptosis and autophagy by mediating oxidative stress, which is considered as the key mechanism causing testicular degeneration as well as dysfunction.
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http://dx.doi.org/10.1007/s11356-021-14853-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8203493PMC
June 2021

Capecitabine and Temozolomide as a Promising Therapy for Advanced Thymic Atypical Carcinoid.

Oncologist 2019 06 9;24(6):798-802. Epub 2018 Nov 9.

Department of Integrative Oncology, China-Japan Friendship Hospital, Beijing, People's Republic of China

Background: Thymic atypical carcinoid (TAC) is a rare thymic neuroendocrine tumor that originates in the neuroendocrine system and lacks a standardized treatment. The combination of capecitabine (CAP) and temozolomide (TEM) is associated with an extremely high and long-lasting response rate in patients with metastatic pancreatic neuroendocrine tumors. However, there is little evidence showing that the CAPTEM regimen is effective for TAC. For patients with unresectable or metastatic atypical carcinoid of the thymus, few treatment options are available, and the treatment efficacy is not satisfactory. To explore the efficacy and safety of the CAPTEM regimen against TAC, we conducted a retrospective review.

Patients And Methods: A total of nine patients with advanced atypical carcinoid of the thymus in the China-Japan Friendship Hospital were treated with capecitabine (750 mg/m twice daily, days 1-14) and temozolomide (200 mg/m once daily, days 10-14) every 28 days between 2014 and 2018. The disease control rate (DCR), progression-free survival (PFS), and adverse effects after treatment were analyzed. The DCR was calculated by RECIST version 1.1. Progression-free survival was calculated by the Kaplan-Meier survival method.

Results: A total of nine patients (six male and three female) were included. The median age at CAPTEM initiation was 50 years (range, 26-58). The median number of CAPTEM cycles was 8 (range, 3-23). The DCR was 89% (8/9), with eight patients achieving stable disease. Only one patient (11%) showed progressive disease. The median PFS was 8 months. Because we applied vitamin B6 and ondansetron before administering the drugs, the side effects of this regimen were very small. Adverse reactions were all below grade 3 and included myelosuppression and digestive tract reaction.

Conclusion: Our results suggest that the CAPTEM regimen may be effective and well tolerated for the treatment of TAC. More evidence is needed to validate the effectiveness of this regimen.

Implications For Practice: Capecitabine and temozolomide regimen is effective and well tolerated in patients with advanced thymic atypical carcinoid.
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http://dx.doi.org/10.1634/theoncologist.2018-0291DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6656479PMC
June 2019

Type 2 gastric neuroendocrine tumor: report of one case.

Transl Gastroenterol Hepatol 2016 30;1:88. Epub 2016 Nov 30.

Department of Integrative Oncology, China-Japan Friendship Hospital, Beijing 100029, China.

In this article we reported a female patient with type 2 gastric neuroendocrine tumor (NET). The patient developed upper abdominal pain, acid reflux, heartburn, nausea, and vomiting without obvious cause 16 years ago. Later, a tumor was found in her stomach. Two years ago, a solid mass was found at the pancreatic head. Somatostatin receptor scintigraphy showed positive result. Puncture biopsy showed the presence of a NET. The serum gastrin level was significantly increased (3,527 pg/mL) at presentation. A second gastroscopy showed polypoid uplifts in gastric body. Puncture biopsy confirmed the presence of a G2 NET in gastric body. The patient previously had received a pituitary tumor surgery and thyroid gland resection. The diagnosis was multiple endocrine neoplasia type 1 (MEN-1). The treatments included sutent, lanreotide, and traditional Chinese herbs. In this article we described the diagnosis and treatment of a patient with MEN-1 accompanied with type 2 gastric NET, which may be clinically informative.
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http://dx.doi.org/10.21037/tgh.2016.11.05DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5244809PMC
November 2016

Preparation and characterization of LiFe0.975Rh0.025PO4 nanorods using the hydrothermal method.

Dalton Trans 2011 Apr 7;40(16):4087-94. Epub 2011 Mar 7.

Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu, 610059, China.

An effective method for the synthesis of LiFe(0.975)Rh(0.025)PO(4) nanorods to serve as a cathode material for lithium-ion batteries is described. During their preparation, L-lysine was used as the growth director of nanorods. The contribution from chloride ions to the formation of the unique nanorods was also investigated. The samples were characterized using X-ray diffraction, X-ray photoelectron spectroscopy, Mössbauer measurements, scanning electron microscopy, electronic conductivity measurements, and transmission electron microscopy. The pH of the solution played a key role in controlling the particle size of the samples. The sample prepared at a pH of 9.5 exhibited excellent electrochemical performance. It delivered an initial discharge capacity of 143.1 mA h g(-1), and a capacity fade of only 7.7% was observed after 200 cycles at 2.5 C over a voltage range of 2.0-4.2 V. Furthermore, its discharge capacity remained stable for values as high as 20 C. The excellent electrochemical performance of LiFe(0.975)Rh(0.025)PO(4) nanorods can be attributed their unique nanorod structure, which limits the distance of lithium ion diffusion in the electrode material to the radius of the nanorods and decreases the surface-film resistance for the charge-transfer process.
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http://dx.doi.org/10.1039/c0dt01643hDOI Listing
April 2011
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