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Gao Y, Ye T, Wu LG, Xu Y, Wang X, Cheng XQ, Zhang YL, Wang YY, Fan XR, Zhao HT, Liu H, Chai XF, Zhang L, Wang MZ, Li NS, Lian XL. [The association between baseline TPOAb and/or TgAb positivity and thyroid immune-related adverse events in patients with malignancies following treatment with immune checkpoint inhibitors]. Zhonghua Yi Xue Za Zhi 2024; 104:963-969. [PMID: 38514346 DOI: 10.3760/cma.j.cn112137-20231011-00706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Objective: To investigate the association between positive anti-thyroid peroxidase antibody (TPOAb) and/or anti-thyroglobulin antibody (TgAb) and the occurrence of thyroid immune-related adverse events (irAEs) in patients with malignant tumors who treated with immune checkpoint inhibitors (ICIs). Methods: A case-control study. A total of 116 patients with malignant tumor who received ICIs treatment and underwent thyroid function evaluation at Peking Union Medical College Hospital from January 2017 to April 2023 were enrolled retrospectively, including 77 males and 39 females, with a median age of (M(Q1, Q3)) 63.0 (55.0, 70.0) years. The patients were divided into the euthyroid group (n=58) and the thyroid irAEs group (n=58) according to whether thyroid irAEs occurred after ICIs treatment. The clinical characteristics and baseline anti-thyroid antibodies associated with the occurrence of thyroid irAEs after ICIs treatment in patients with malignant tumors were evaluated. Variables with statistical significance in univariate analysis were included in multivariate logistic regression model to analyze the risk factors for thyroid irAEs in patients with malignant tumors who received ICIs treatment. Results: In irAEs group, therewore 4 (3.4%) cases of clinical thyrotoxicosis, 23(19.8%) cases of subclinical thyrotoxicosis, 23 (19.8%) cases of clinical hypothyroidism, and 8(6.9%) cases of subclinical hypothyroidism. The positive rate of anti-thyroid antibodies at baseline in the thyrioid irAEs group was higher than that in the euthyroid group[16/58(27.6%)vs 3/58(5.2%),P=0.001]. After at least one course of ICIs treatment, the incidence of thyroid irAEs in patients with positive anti-thyroid antibodies at baseline was 84.2% (16/19), whereas it was 43.3% (42/97) in patients with negative anti-thyroid antibodies(P=0.001). Univariate logistic regression analysis showed that gender (OR=2.812, 95%CI:1.257-6.293), baseline thyroid autoantibodies were positive (OR=6.984, 95%CI: 1.909-25.547), baseline TgAb positivity (OR=8.909, 95%CI: 1.923-41.280), and baseline TPOAb positivity (OR=7.304, 95%CI: 1.555-34.308) were associated with thyroid irAEs (all P<0.05). Multivariate logistic regression analysis indicated that baseline TgAb positivity (OR=7.637, 95%CI: 1.617-36.072) was a risk factor for thyroid irAEs (P=0.01). Conclusions: The incidence of thyroid irAEs is higher in patients who are positive for baseline TPOAb and/or TgAb compared to those who are negative for TPOAb and TgAb. Patients with positive TgAb at baseline are at high risk of developing thyroid irAEs.
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Affiliation(s)
- Y Gao
- Department of Endocrinology, Key Laboratory of Endocrinology of the National Health Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - T Ye
- Department of Endocrinology, the Forth Affiliated Hospital of Xinjiang Medical University, Urumqi 830061, China
| | - L G Wu
- Department of Endocrinology, Key Laboratory of Endocrinology of the National Health Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - Y Xu
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - X Wang
- Department of Medical Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - X Q Cheng
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - Y L Zhang
- Medical Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - Y Y Wang
- Department of Medical Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - X R Fan
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - H T Zhao
- Department of Liver Surgery, Peking Union Medical College, Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - H Liu
- Department of Endocrinology, Key Laboratory of Endocrinology of the National Health Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - X F Chai
- Department of Endocrinology, Key Laboratory of Endocrinology of the National Health Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - L Zhang
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - M Z Wang
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - N S Li
- Department of Endocrinology, Key Laboratory of Endocrinology of the National Health Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - X L Lian
- Department of Endocrinology, Key Laboratory of Endocrinology of the National Health Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
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Chen ZH, Zhao Z, Deng CW, Li NS. Association between Air Pollution and Type 2 Diabetes Mellitus in Developing Countries: A Systematic Review and Meta-Analysis. Chinese Medical Sciences Journal 2022; 37:218-227. [PMID: 36321177 DOI: 10.24920/004065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Objective In recent years, many studies have reported that air pollution is a risk factor for type 2 diabetes mellitus (T2DM). The aim of this systematic review and meta-analysis is to summarize the evidence about the association between exposure to air pollution and T2DM in developing countries. Methods The databases, including PubMed, EMBASE and Web of Science, were systematically searched for studies published up to 31 March 2022. Studies about the association between air pollution and T2DM prevalence or incidence in developing countries were included. The odds ratio (OR) was used as effect estimate. We synthesized the included studies in the meta-analysis. Results We included 8 cross-sectional studies and 8 cohort studies, all conducted in developing countries. Meta-analysis of 8 studies on PM2.5 (particulate matter ≤ 2.5 μm in diameter) showed that T2DM prevalence was significantly associated with PM2.5 exposure (OR=1.12; 95% CI: 1.07, 1.17; P<0.001). The association between air pollutants and T2DM incidence was not estimated due to the limited relevant studies. Conclusions The exposure to PM2.5 would be positively associated with an increased prevalence of T2DM in developing countries. Some effective measures should be taken to reduce air pollutant exposure in people who are vulnerable to diabetes.
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Affiliation(s)
- Zi-Han Chen
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China
| | - Zhou Zhao
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China
- Cadre Medical Department, Beijing Aerospace General Hospital, Beijing 100076, China
| | - Chui-Wen Deng
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, the Ministry of Education Key Laboratory, Beijing 100730, China
| | - Nai-Shi Li
- Department of Endocrinology, Key Laboratory of Endocrinology of National Health Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China
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Cai YQ, Zeng HQ, Li YP, Li NS, Zheng YT, Lai XX, Chen X. [Advances in clinical prediction scores for prognosis of coronavirus disease-2019]. Zhonghua Jie He He Hu Xi Za Zhi 2022; 45:706-711. [PMID: 35768378 DOI: 10.3760/cma.j.cn112147-20211125-00837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Coronavirus Disease-2019 (COVID-19) has been a major public health issue all over the world, placing a significant burden on available healthcare resources. The most common types of COVID-19 are the mild and common forms. Although the proportion of the severe-critical types is smaller, the rate of death is significantly higher and the medical resources required tend to be greater. Thus, a variety of scores based on other disease and COVID-19 were used to assess the risk of poor prognosis on the COVID-19, including the common scores for community-acquired pneumonia, sepsis and viral pneumonia. Unfortunately, the above scores often lacked an adequate description of the applicable population or were at high risk of bias with unknown applicability. Therefore, the article summarized the existing scores, aiming to provide a reference for clinical prognostic risk assessment.
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Affiliation(s)
- Y Q Cai
- The Third Clinical Medical College, Fujian Medical University, Fuzhou 350001, China
| | - H Q Zeng
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Xiamen University, Xiamen 361004,China
| | - Y P Li
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Xiamen University, Xiamen 361004,China
| | - N S Li
- The Third Clinical Medical College, Fujian Medical University, Fuzhou 350001, China
| | - Y T Zheng
- The Third Clinical Medical College, Fujian Medical University, Fuzhou 350001, China
| | - X X Lai
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Xiamen University, Xiamen 361004,China
| | - Xiangxing Chen
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Xiamen University, Xiamen 361004,China
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Wu HY, Li NS, Song YL, Bai CM, Wang Q, Zhao YP, Xiao Y, Yu S, Li M, Chen YJ. Plasma levels of acylated ghrelin in patients with insulinoma and expression of ghrelin and its receptor in insulinomas. Endocrine 2020; 68:448-457. [PMID: 32124259 PMCID: PMC7266859 DOI: 10.1007/s12020-020-02233-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 02/14/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Insulinoma is a subtype of pancreatic neuroendocrine tumors. Many patients with insulinoma are obese due to frequent food intake. Ghrelin is associated with obesity and blood levels of insulin. It is not clear if plasma levels of ghrelin in insulinoma patients correlate with hyperinsulinemia and obesity. Expression of ghrelin and its receptor has not been well demonstrated in insulinoma. OBJECTIVE To study if plasma levels of ghrelin is associated with obesity and hyperinsulinemia or hyperproinsulinemia in patients with insulinoma, and to detect the expression of ghrelin and its receptor in insulinoma. METHODS Plasma levels of acylated ghrelin, insulin, and proinsulin were measured in 37 patients with insulinoma and 25 controls by ELISA. Expression of ghrelin and its receptor GHS-R1A was examined in 20 insulinoma and paired pancreatic specimens by immunostaining. P ≤ 0.05 was considered significant. RESULTS The plasma levels of acylated ghrelin in patients with insulinoma were significantly lower than that in the controls (median 15 pg/ml vs. 19 pg/ml, respectively, P = 0.016). The reduced plasma levels of acylated ghrelin in patients were significantly correlated with obesity, hyperinsulinemia, and hyperproinsulinemia (P = 0.029 and P = 0.028, respectively). Expression of ghrelin and its receptor GHS-R1A was shown in the majority of insulinoma specimens. The expression of GHS-R1A was positively correlated with ghrelin expression in insulinoma (P = 0.014). CONCLUSIONS Plasma levels of acylated ghrelin decreased in patients with insulinoma, probably due to the hyperinsulinemia and obesity in the patients. Expression of both ghrelin and its receptor is common in insulinoma.
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Affiliation(s)
- Hai-Yan Wu
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Nai-Shi Li
- Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Yu-Li Song
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Chun-Mei Bai
- Department of Medical Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Qiang Wang
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Yu-Pei Zhao
- Department of Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Yu Xiao
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Shuang Yu
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Ming Li
- Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Yuan-Jia Chen
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China.
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Abstract
BACKGROUND The expression and significance of small nucleolar RNA host gene 7 (SNHG7) in early-stage colon carcinogenesis remains unclear. METHODS The level of SNHG7 and microRNA-193b (miR-193b) was detected by qRT-PCR in colon tumor tissues and cells. The interaction of SNHG7 and miR-193b and the influence of SNHG7 silencing on colon tumor cells was evaluated. RESULTS Stepwise upregulated SNHG7 in colon advanced adenomas and early-stage cancer negatively correlates with miR-193b level, the direct interaction was confirmed in vitro. SNHG7 silencing in HT29 cells decreased proliferation and promoted apoptosis by inhibiting K-ras/ERK/cyclinD1. CONCLUSIONS SNHG7 is an oncogenic biomarker in colon carcinogenesis. The effect may be mediated by interaction with miR-193b.
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Wang L, Lu L, Lu ZL, Chen S, Zhu HJ, Pan H, Duan L, Yang HB, Wang LJ, Yuan T, Li NS. [Etiology and clinical features of primary adrenal insufficiency]. Zhonghua Yi Xue Za Zhi 2020; 100:915-921. [PMID: 32234166 DOI: 10.3760/cma.j.cn112137-20191009-02178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To summarize the etiology of primary adrenal insufficiency (PAI) and analyze its clinical features. Methods: A retrospective analysis was performed in the Department of Endocrinology, Peking Union Medical College Hospital from October 1981 to June 2019. Patients with PAI as the first symptom were enrolled. The etiology of PAI was analyzed and the clinical characteristics was also summarized. Results: A total of 131 patients with PAI were enrolled, including 87 males and 44 females (57 adolescents, and 74 adults). The age ranged from 0 to 73 years. The primary cause of PAI in adolescents was genetic defects (52.6%, 30/57), in which congenital adrenal dysplasia caused by DAX1 gene deficiency accounted for 50.0% (15/30), followed by autoimmunity (22.8%, 13/57). The primary cause of adult PAI was infection (58.1%, 43/74), of which tuberculosis accounted for the majority (93.0%, 40/43), and autoimmune adrenalitis accounted for 19.0% (14/74). Compared with the tuberculosis group, female patients were more common, and the onset age was younger, the plasma cortisol, serum sodium, fasting blood glucose, creatinine and aldosterone were lower (all P<0.05), and serum potassium and renin levels were higher in the autoimmune adrenalitis group (both P<0.05). Conclusions: In the current study, the proportion of PAI caused by infection in the adult group was higher than that in the adolescent group. The most common cause of adult PAI was tuberculosis infection. The most common cause of childhood PAI was genetic defects. Autoimmune damage to the adrenal glands may be more severe than tuberculosis infection.
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Affiliation(s)
- L Wang
- Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Endocrinology of National Health Commission, Beijing 100730, China (Wang Long is now working in the Department of Endocrine and Metabolic Diseases, the Third Affiliated Hospital of Soochow University, Changzhou 213000, China)
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Zhang DM, Xue HD, Duan L, Li J, Li NS, Jin ZY. A Small Solitary Pulmonary Nodule Discovered by (18)F-fluorodeoxyglucose Positron Emission Tomography and CT: Rare Infection Instead of Rare Tumor. ACTA ACUST UNITED AC 2016; 27:249-52. [PMID: 23294592 DOI: 10.1016/s1001-9294(13)60010-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
THE causes of Cushing's syndrome are mainly divided into adrenocorticotropic hormone (ACTH) dependent and independent. ACTH dependent hypercortisolism represents excess ACTH se-creting by the pituitary or tumor outside the pituitary; and the latter one is also called as ectopic ACTH syndrome. Thorax is the most common location of causative lesions for ectopic ACTH syndrome, and the size of lesion is too small to be detected in some cases.1, 2 Cryptococcal pneumonia usually occurs in immunocompromised patients and excess cortisol production can theoretically produce a state of immunodeficiency. Development of cryptococcal pneumonia concomitant with Cushing syndrome (CS) was rare. Here, we report a case of pulmonary nodule in a patient with CS differentiated with ectopic ACTH-producing tumor. Cryptococcal pneumonia was diagnosed following lung resection.
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Affiliation(s)
- Da-Ming Zhang
- Department of Radiology Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
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Zhu HJ, Wang LJ, Wang XQ, Pan H, Li NS, Yang HB, Jin M, Zang BX, Gong FY. Hydroxysafflor yellow A (HYSA) inhibited the proliferation and differentiation of 3T3-L1 preadipocytes. Cytotechnology 2015; 67:885-92. [PMID: 25749912 DOI: 10.1007/s10616-014-9783-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 08/26/2014] [Indexed: 12/15/2022] Open
Abstract
Hydroxysafflor yellow A (HSYA), a main component of safflor yellow, has been demonstrated to prevent steroid-induced avascular necrosis of femoral head by inhibiting primary bone marrow-derived mesenchymal stromal cells adipogenic differentiation induced by steroid. In this study, we investigate the effect of HSYA on the proliferation and adipogenesis of mouse 3T3-L1 preadipocytes. The effects of HSYA on proliferation and differentiation of 3T3-L1 cells and its possible mechanism were studied by 3-(4,5-dimethylthiazol-2-yl) 2,5-diphenyl tetrazolium bromide spectrophotometry, Oil Red O staining, intracellular triglyceride assays, real-time quantitative RT-PCR, transient transfection and dual luciferase reporter gene methods. HSYA inhibited the proliferation of 3T3-L1 preadipocytes and cell viability greatly decreased in a dose and time dependent manner. HSYA (1 mg/l) notably reduced the amount of intracellular lipid and triglyceride content in adipocytes by 21.3 % (2.13 ± 0.36 vs 2.71 ± 0.40, P < 0.01) and 22.6 % (1.33 ± 0.07 vs 1.72 ± 0.07, P < 0.01) on days 8 following the differentiation, respectively. HSYA (1 mg/l) significantly increased hormone-sensitive lipase (HSL) mRNA expression and promoter activities by 2.4- and 1.55-fold, respectively (P < 0.01), in differentiated 3T3-L1 adipocytes. HSYA inhibits the proliferation and adipogenesis of 3T3-L1 preadipocytes. The inhibitory action of HYSA on adipogenesis may be due to the promotion of lipolytic-specific enzyme HSL expression by increasing HSL promoter activity.
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Affiliation(s)
- Hui-Juan Zhu
- Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health, The Translational Medicine Center of PUMCH, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1# Shuaifuyuan, Wangfujing, Beijing, 100730, China
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Zhu HJ, Ding HH, Deng JY, Pan H, Wang LJ, Li NS, Wang XQ, Shi YF, Gong FY. Inhibition of preadipocyte differentiation and adipogenesis by zinc-α2-glycoprotein treatment in 3T3-L1 cells. J Diabetes Investig 2013; 4:252-60. [PMID: 24843663 PMCID: PMC4015661 DOI: 10.1111/jdi.12046] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 10/29/2012] [Accepted: 11/27/2012] [Indexed: 12/19/2022] Open
Abstract
Aims/Introduction Zinc‐α2‐glycoprotein (ZAG) is associated with the loss of adipose tissue in cancer cachexia, and has recently been proposed to be a candidate factor in the regulation of bodyweight. The aim of the study was to investigate the effects of ZAG on the proliferation and differentiation of 3T3‐L1 preadipocytes. Materials and Methods 3‐(4,5‐Dimethylthiazol‐2‐yl) 2,5‐diphenyl tetrazolium bromide (MTT) spectrophotometry, Oil Red O staining, intracellular triglyceride assays, real‐time quantitative reverse transcription polymerase chain reaction and transient transfection methods were used to explore the action of ZAG. Results Ectopic ZAG expression significantly stimulates 3T3‐L1 cells proliferation in a dose‐ and time‐dependent manner. The maximum influence of ZAG on proliferation was 1.43‐fold higher than what was observed in control cells. This effect was observed 144 h after transfection with 0.16 μg of murine ZAG (mZAG) plasmid (P < 0.001). The intracellular lipids content in mZAG over‐expressing cells were decreased as much as 37% when compared with the control cells after differentiation (P < 0.05, P < 0.01). The messenger ribonucleic acid levels of peroxisome proliferators‐activated receptor‐γ (PPARγ), CCAAT enhancer‐binding protein‐α (C/EBPα) and the critical lipogenic gene, fatty acid synthase (FAS), are also downregulated by up to 50% in fully differentiated ZAG‐treated adipocytes. ZAG suppresses FAS messenger ribonucleic acid expression by reducing FAS promoter activity. Conclusions Zinc‐α2‐glycoprotein stimulates the proliferation and inhibits the differentiation of 3T3‐L1 murine preadipocytes. The inhibitory action of ZAG on cell differentiation might be a result of the attenuation of the expression of PPARγ, C/EBPα and the lipogenic‐specific enzyme FAS by reducing FAS promoter activity.
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Affiliation(s)
- Hui-Juan Zhu
- Department of Endocrinology Key Laboratory of Endocrinology of Ministry of Health Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
| | - Hui-Hua Ding
- Department of Endocrinology Key Laboratory of Endocrinology of Ministry of Health Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China ; Department of Rheumatology Renji Hospital, School of Medicine Shanghai Jiao Tong University Shanghai China
| | - Jie-Ying Deng
- Department of Endocrinology Key Laboratory of Endocrinology of Ministry of Health Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
| | - Hui Pan
- Department of Endocrinology Key Laboratory of Endocrinology of Ministry of Health Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
| | - Lin-Jie Wang
- Department of Endocrinology Key Laboratory of Endocrinology of Ministry of Health Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
| | - Nai-Shi Li
- Department of Endocrinology Key Laboratory of Endocrinology of Ministry of Health Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
| | - Xiang-Qing Wang
- Department of Endocrinology Key Laboratory of Endocrinology of Ministry of Health Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
| | - Yi-Fan Shi
- Department of Endocrinology Key Laboratory of Endocrinology of Ministry of Health Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
| | - Feng-Ying Gong
- Department of Endocrinology Key Laboratory of Endocrinology of Ministry of Health Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
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Zhang SJ, Gong FY, Deng JY, Zhu HJ, Pan H, Zhang DX, Li NS. [Construction of Zinc-alpha2-glycoprotein expression plasmid and its expression in 3t3-l1 preadipocytes]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2013; 32:283-8. [PMID: 20602880 DOI: 10.3881/j.issn.1000-503x.2010.03.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To construct mouse Zinc-alpha2-glycoprotein (mZAG) eucaryotic expression plasmid and identify its expression in 3T3-L1 preadipocytes. METHODS The total RNA from mouse liver tissue was extracted. The reverse-transcript(RT)-PCR method was used to amplify the complete domain sequence of mZAG, and the confirmed PCR products was inserted into expression plasmid by DNA ligation. The mZAG expression plasmids with various concentrations (0, 0.4, 0.8, and 1.6 microg) were transfected into 3T3-L1 preadipocytes, and ZAG expression in mRNA and protein level was determined by real-time fluorescence quantitative PCR and Western blot, respectively. RESULTS DNA sequencing confirmed the right sequence of mZAG expression plasmid pcDNA3.1(-)-mZAG. After the mZAG expression plasmid with different concentrations were transfected into 3T3-L1 preadipocytes, mZAG mRNA level significantly increased and reached 2.58 folds (P=0.002), 3.67 folds (P=0.000 and 5.19 folds (P=0.001) of that in the control group (no mZAG transfection). mZAG protein level also significantly increased and reached 2.75 folds of that in the control group (P=0.017). Treating 3T3-L1 cells with small interfering RNA (siRNA) sequence siRNA 1 and siRNA 4 resulted in a decrease of mZAG mRNA to 49% and 41% of those in the control group(no siRNA sequence transfection) (P=0.002P=0.000)and a decrease of mZAG protein to 55% and 62% of that in the control group (P=0.004,P=0.025). CONCLUSIONS mZAG expression plasmid pcDNA3.1(-)-mZAG was successfully established in this study. This plasmid can be well expressed in 3T3-L1 preadipocytes. siRNA 1 and siRNA 4 can effectively inhibit the expression of mZAG in these cells.
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Affiliation(s)
- Shao-Jun Zhang
- Key Laboratory of Endocrinology of Ministry of Health, Department of Endocrinology, PUMC Hospital, CAMS and PUMC, Beijing 100730, China
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Pan H, Ping XC, Zhu HJ, Gong FY, Dong CX, Li NS, Wang LJ, Yang HB. Association of myostatin gene polymorphisms with obesity in Chinese north Han human subjects. Gene 2012; 494:237-41. [DOI: 10.1016/j.gene.2011.10.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 10/08/2011] [Accepted: 10/27/2011] [Indexed: 12/11/2022]
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Zhu Y, Li NS, Lu L, Chen S, Xing XP, Meng XW, Guan H, Tan L, Lü K, Meng YX. Hypercalcemic crisis due to a mediastinal parathyroid cyst diagnosed by ultrasound-guided fine needle aspiration. Chin Med J (Engl) 2010; 123:3731-3733. [PMID: 22166661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Affiliation(s)
- Yan Zhu
- Department of Endocrinology, Key Laboratory of Endocrine and Metabolic Diseases, Ministry of Health, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100730, China
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Li NS, Li WH, Wang H. [Perioperative glycemic control by insulin glargine in type 2 diabetic patients]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2008; 30:109-111. [PMID: 18361065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVE To investigate the feasibility of perioperative glycemic control with insulin glargine in type 2 diabetic patients. METHODS We retrospectively analyzed the clinical data of 16 type 2 diabetic inpatients treated with insulin glargine (research group) and 16 type 2 diabetic inpatients treated with the traditional intensified insulin therapy (control group) for perioperative glycemic control. RESULTS The fasting blood glucose values of the diabetic patients in the research group on the day of surgery and the first 3 postoperative days were (7.5 +/- 1.8), (8.2 +/- 1.8), (7.6 +/- 1.6), and (7.2 +/- 1.1) mmol/L, respectively, and were (9.0 +/- 2.8), (10.4 +/- 2.4), (8.8 +/- 2.7), (9.0 +/- 2.0) mmol/L in the control group, respectively. The fasting blood glucose values in the research group were significantly lower than the control group on the first and third postoperative day (P = 0.02 and 0.01, respectively). No hypoglycemic events were observed and all wounds were healed well in both groups. CONCLUSION With satisfied fasting blood glucose level and fewer episode of hypoglycemia, perioperative glycemic control by insulin glargine in type 2 diabetic patients is safe, effective, and convenient.
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Affiliation(s)
- Nai-Shi Li
- Department of Endocrinology, PUMC Hospital, CAMS and PUMC, Beijing 100730, China
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Abstract
[structure: see text]. The first synthesis of 2'-C-beta-trifluoromethyl pyrimidine ribonucleosides is described. 1,2,3,5-Tetra-O-benzoyl-2-C-beta-trifluoromethyl-alpha-D-ribofuranose (3) is prepared from 1,3,5-tri-O-benzoyl-alpha-D-ribofuranose (1) in three steps and converted to 3,5-di-O-benzoyl-2-C-beta-trifluoromethyl-alpha-D-1-ribofuranosyl bromide (5). The 1-bromo derivative (5) is found to be a powerful reaction intermediate for the synthesis of ribonucleosides. The reaction of silylated pyrimidines with (5) in the presence of HgO/HgBr2 affords exclusively the beta-anomers (6-8). Deprotection of (6-8) with ammonia in methanol yields the 2'-C-beta-trifluoromethyl nucleosides (9-11).
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Affiliation(s)
- N S Li
- Howard Hughes Medical Institute, Department of Biochemistry and Molecular Biology, The University of Chicago, 5841 S. Maryland Avenue, MC 1028, Chicago, Illinois 60637, USA
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Ji H, Li SP, Cheng X, Cheng HR, Ng TB, Li P, Li NS. Antithrombotic effects of low-molecular-weight heparin calcium (LMWH-Ca) in experimental models. Gen Pharmacol 1999; 33:207-11. [PMID: 10461860 DOI: 10.1016/s0306-3623(98)00276-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The antithrombotic activity of low-molecular-weight heparin calcium (LMWH-Ca) was studied in venous and arterial thrombosis models, arterial thrombosis model in rats, arterio-venous shunt model and venous thrombosis model in rabbits. The data showed that LMWH-Ca reduced thrombus formation in a dose-dependent manner. It suggests that LMWH-Ca is a potent antithrombotic agent for venous thrombosis, and also may be a beneficial therapeutic agent in arterial thrombosis.
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Affiliation(s)
- H Ji
- Department of Pharmacology, China Pharmaceutical University, Nanjing, PRC.
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Xiong Y, Li YJ, Yu XJ, Liu GZ, Li NS. Endogenous inhibitors of nitric oxide synthesis and lipid peroxidation in hyperlipidemic rabbits. Zhongguo Yao Li Xue Bao 1996; 17:149-52. [PMID: 9772666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
AIM To examine whether the elevation of endogenous NG, NG-dimethylarginine (DMA) content is related to lipid peroxidation in the high lipid-fed rabbit. METHODS In high lipid diet-fed rabbits, concentrations of serum cholesterol, triglyceride, malondialdehyde (MDA), and DMA were measured, and endothelium-dependent relaxation to acetylcholine (ACh) was tested. RESULTS After 6-wk on a high lipid-diet, the levels of serum total cholesterol, triglyceride, MDA, and DMA were increased vs those in control group (MDA was 2.88 +/- s 0.20 vs 1.54 +/- 0.13 nmol.L-1, P < 0.01 and DMA was 1.51 +/- 0.07 vs 0.75 +/- 0.13 mumol.L-1, P < 0.01), while the endothelium-dependent vasodilation in the isolated thoracic aorta was impaired (the maximal response to ACh was 45.59 +/- 3.10 vs 76.93 +/- 5.68%). Supplementation with vitamin E decreased MDA and DMA content and improved the endothelium-dependent vasodilation. CONCLUSIONS An increase in serum concentration of DMA may be secondary to the elevation of lipid peroxides in the hyperlipidemic rabbit.
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Affiliation(s)
- Y Xiong
- Department of Pharmacology, Hu-nan Medical University Changsha, China
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Zheng YQ, Xu FB, Zhou S, Li NS, Shen ZL, Chen WJ. [Abortifacient activity of caffeic acid and its antiprogestational action in early pregnant mice]. Zhongguo Yao Li Xue Bao 1987; 8:250-4. [PMID: 2959022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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