Publications by authors named "Lihong Zhuang"

5 Publications

  • Page 1 of 1

Single Dose of SHR-1222, a Sclerostin Monoclonal Antibody, in Healthy Men and Postmenopausal Women With Low Bone Mass: A Randomized, Double-Blind, Placebo-Controlled, Dose-Escalation, Phase I Study.

Front Pharmacol 2021 20;12:770073. Epub 2021 Oct 20.

National Clinical Research Center for Metabolic Diseases, Key Laboratory of Diabetes Immunology, Ministry of Education, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, China.

SHR-1222 is a humanized monoclonal antibody targeting sclerostin and has the potential to promote bone formation and reduce bone resorption. This study was aimed to assess the safety, tolerability, pharmacokinetics, pharmacodynamics, and immunogenicity of SHR-1222 in healthy men and postmenopausal women with low bone mass (BMD). It was a randomized, double-blind, placebo-controlled, dose-escalation, phase I study. Subjects received SHR-1222 at 50, 100, 200, 300, and 400 mg sequentially or matching placebo subcutaneously. Totally, 50 subjects with low BMD were enrolled and randomly assigned; 10 received placebo and 40 received SHR-1222 (50 mg, n = 4; 100, 200, 300, or 400 mg, n = 9). The most common adverse events that occurred at least 10% higher in subjects with SHR-1222 treatment than those with placebo were decreased blood calcium, blood urine present, increased blood cholesterol, electrocardiogram T wave abnormal, urinary tract infection, increased blood pressure diastolic, and positive bacterial test. All the above adverse events were mild in severity and well resolved except one of increased blood cholesterol in a subject lost to follow-up. The serum SHR-1222 concentration increased in a dose-dependent manner. Administration of SHR-1222 upregulated the bone-formation markers N-terminal propeptide of type 1 procollagen, osteocalcin, and bone-specific alkaline phosphatase, while downregulated the bone-resorption marker β-C-telopeptide. The BMD at the lumbar spine notably rose after a single dose of SHR-1222. The largest increase occurred in the 400 mg cohort (3.8, 6.7, and 6.1% on day 29, 57, and 85, respectively; compared with 1.4, 0.8, and 1.0% in the placebo group). Although 10.0% of subjects receiving SHR-1222 tested positive for anti-SHR-1222 antibodies, no obvious effects of antibody formation were found on pharmacokinetics. Overall, SHR-1222 was well tolerated at doses from 50 to 400 mg and is a promising new remedy for osteoporosis. http://www.clinicaltrials.gov, NCT03870100.
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http://dx.doi.org/10.3389/fphar.2021.770073DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8564351PMC
October 2021

The expression level of COX7C associates with venous thromboembolism in colon cancer patients.

Clin Exp Med 2020 Nov 11;20(4):527-533. Epub 2020 Jul 11.

Department of Anesthesiology, Quanzhou First Hospital Affiliated To Fujian Medical University, No.250 East Street, Licheng District, Quanzhou, 362000, Fujian, China.

Venous thromboembolism (VTE) is a common complication of colon cancer. In the present study, we aimed to explore the association of the oncogene COX7C to VTE in colon cancer patients. Samples from 580 patients were examined histologically for VTE and pathological characteristic of cancer. Gene mutation and expression analysis were performed using polymerase chain reaction-based assays to evaluate genes related to VTE, including COX7C. Univariate analysis between clinical pathological factors and VTE was conducted. Logistic regression analysis was performed for the prediction of VTE by pathological factors and gene expressions. Among patients investigated, a total of 56 patients had VTE. COX7C had a significant correlation with VTE (p < 0.001). Despite a correlation between tumor size, invasion depth of tumor, lymph node metastasis, lymph node metastasis, distant metastasis, lymphovascular invasion, histologic type and pathology type, Ki-67, and some other genes, to VTE (p > 0.05), only COX7C expression demonstrated significance in its ability to predict VTE. Here, we show that COX7C upregulation strongly correlates with VTE in colon cancer, which implicates its role as a biomarker and therapeutic target of VTE in colon cancer.
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http://dx.doi.org/10.1007/s10238-020-00644-1DOI Listing
November 2020

Pharmacodynamics and pharmacokinetics of fluticasone furoate/vilanterol in healthy Chinese subjects.

Pharmacotherapy 2015 Jun 9;35(6):586-99. Epub 2015 Jun 9.

Respiratory Medicines Development Centre, GlaxoSmithKline, Stevenage, Hertfordshire, UK.

Study Objective: To investigate the pharmacodynamic and pharmacokinetic profiles of fluticasone furoate (FF)/vilanterol (VI) - a fixed-dose combination of an inhaled corticosteroid (ICS) and a long-acting β2 -agonist for the treatment of asthma and chronic obstructive pulmonary disease - after single and repeat administration in healthy Chinese subjects.

Design: Double-blind, placebo-controlled, single-site, randomized, four-way crossover study.

Setting: The Clinical Pharmacological Research Centre at Peking Union Medical College Hospital [PUMCH]) in Beijing, China.

Subjects: Sixteen healthy, nonsmoking Chinese adults.

Intervention: Subjects were randomized to receive FF/VI 50/25, 100/25, or 200/25 μg, or placebo once/daily in the morning, delivered by the Ellipta dry powder inhaler, for 7 consecutive days. The subjects then received the other three treatments, with each treatment period separated by a 7-day washout period.

Measurements And Main Results: The co-primary outcome measures reflected pharmacodynamic responses relating to recognized class effects of the two drug classes: reduced serum cortisol level (ICSs), and increased Fridericia's corrected QT interval (QTcF) and reduced serum potassium level (long-acting β2 -agonists). Co-primary pharmacodynamic endpoints were 0-24-hour weighted mean serum cortisol level on day 7 (cortisol0-24 hr, Day 7 ), and 0-4-hour weighted mean and maximum QTcF and weighted mean and minimum serum potassium level on days 1 and 7. Fluticasone furoate and VI plasma concentrations, derived pharmacokinetic parameters, and safety were also assessed. Of the 16 subjects randomized, 15 completed the study. Reductions in cortisol0-24 hour, Day 7 of 15% and 25% were observed with FF/VI 100/25 and 200/25 μg, respectively, versus placebo. Minor increases (< 10 msec) in maximum QTcF on day 7 were seen with FF/VI 50/25 and 100/25 μg but not with 200/25 μg. Slight decreases in serum potassium level were only observed in subjects receiving FF/VI 50/25 μg on day 1 and FF/VI 50/25 and 200/25 μg on day 7. Fluticasone furoate accumulation (day 7 vs day 1) for FF/VI 50/25-200/25 μg ranged from 38 to 54% for maximum observed concentration and 63-71% for area under the concentration-time curve from 0 to 4 hours. Fluticasone furoate pharmacokinetics were less than dose proportional. The VI pharmacokinetic profiles were similar for all three FF/VI doses. Adverse events were all mild in intensity and were reported by 13 (81%) of the 16 subjects.

Conclusion: In healthy Chinese subjects, minimal and non-clinically relevant β-adrenergic pharmacodynamic effects were observed with FF/VI doses ranging from 50/25 to 200/25 μg. FF dose-dependent reductions in serum cortisol levels of 15-25% were seen after administration of FF/VI 100/25 and 200/25 μg. FF/VI was safe and well tolerated in these subjects at doses ranging from 50/25 to 200/25 μg.
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http://dx.doi.org/10.1002/phar.1598DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4744690PMC
June 2015

Enhanced electrochemical nanoring electrode for analysis of cytosol in single cells.

Anal Chem 2014 Dec 11;86(23):11517-22. Epub 2014 Nov 11.

School of Pharmacy, Nanjing Medical University , Nanjing, Jiangsu 210000, China.

A microelectrode array has been applied for single cell analysis with relatively high throughput; however, the cells were typically cultured on the microelectrodes under cell-size microwell traps leading to the difficulty in the functionalization of an electrode surface for higher detection sensitivity. Here, nanoring electrodes embedded under the microwell traps were fabricated to achieve the isolation of the electrode surface and the cell support, and thus, the electrode surface can be modified to obtain enhanced electrochemical sensitivity for single cell analysis. Moreover, the nanometer-sized electrode permitted a faster diffusion of analyte to the surface for additional improvement in the sensitivity, which was evidenced by the electrochemical characterization and the simulation. To demonstrate the concept of the functionalized nanoring electrode for single cell analysis, the electrode surface was deposited with prussian blue to detect intracellular hydrogen peroxide at a single cell. Hundreds of picoamperes were observed on our functionalized nanoring electrode exhibiting the enhanced electrochemical sensitivity. The success in the achievement of a functionalized nanoring electrode will benefit the development of high throughput single cell electrochemical analysis.
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http://dx.doi.org/10.1021/ac502437dDOI Listing
December 2014

[Determination of naphthenic acids in distillates of crude oil by gas chromatography/chemical ionization-mass spectrometry].

Se Pu 2004 May;22(3):220-3

College of Materials & Metallurgy, Northeastern University, Shenyang 110005, China.

The petroleum carboxylic acids in 200-420 degrees C distillate of crude oil were separated by the extraction with column chromatography on an anion exchange resin. The effect of the composition and structure of naphthenic acids on separation were studied by the infra-red (IR) spectroscopic techniques. Naphthenic acids and iso-butane reagent gas were introduced into the ion source for chemical ionization, in which the ions represented by [M + C4H9]+ were used to calculate the relative molecular mass for each acid. Based on the mass spectra of pure fatty and naphthenic acids, in combination with the z-series formula CnH(2n + z)O2, the naphthenic acids can be classified into fatty, mono-, bi- ... hexa-cyclic types. The results indicated that the relative molecular mass range of naphthenic acids in this distillates was 170-510, and the carbon number range was C10-C35. The contents of bi-cyclic and tri-cyclic naphthenic acids were higher than others.
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May 2004
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