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Gong F, Gong Z, Liu H, Yi P, Jia Y, Zhuang J, Shu J, Huang X, Wu Y. The Impact of Problematic Internet Use on Adolescent Loneliness-Chain Mediation Effects of Social Support and Family Communication. Psychol Res Behav Manag 2024; 17:1903-1916. [PMID: 38737671 PMCID: PMC11086433 DOI: 10.2147/prbm.s443349] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 04/09/2024] [Indexed: 05/14/2024] Open
Abstract
Purpose To explore the relationship between adolescents' problematic Internet use and loneliness and the mediating roles of social support and family communication. Methods A questionnaire survey of 2483 adolescents aged 12-17 years in 148 cities in China was conducted using the Problematic Internet Use Scale, the Collaborative Social Support Scale, the Family Communication Scale, and the Loneliness Scale. The data were statistically analyzed by SPSS 26.0 and validated by AMOS 28.0. Structural equation modelling (SEM) was conducted to test the effects of problematic Internet use on adolescents' loneliness and the mediating effects of perceptions of social support and family communication. Results There was a significant positive effect of adolescents' problematic Internet use on loneliness (B-0.471, P<0.001), and the mediating effects of perceptual social support (0.003, 0.012) and family communication (0.008, 0.019) were found to play a chain effect between adolescents' problematic Internet use and loneliness, respectively. Use and feelings of loneliness played a chain mediating role (0.002, 0.006). Conclusion This study identified the effects of adolescent problematic Internet use on loneliness and its mechanism of action, emphasized the importance of social support and family communication, and provided practical insights for improving family parenting styles and preventing and intervening in adolescent loneliness problems.
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Affiliation(s)
- Fangmin Gong
- College of Literature and Journalism Communication, Jishou University, Jishou, People’s Republic of China
| | - Zhuliu Gong
- College of Literature and Journalism Communication, Jishou University, Jishou, People’s Republic of China
| | - Haimeng Liu
- College of Minority Preparatory Education, Jishou University, Zhangjiajie, People’s Republic of China
| | - Pei Yi
- College of Literature and Journalism Communication, Jishou University, Jishou, People’s Republic of China
| | - Yuhan Jia
- Office of the Party and Administration, Hebei Academy of Fine Arts, Shijiazhuang, People’s Republic of China
| | - Jingwen Zhuang
- College of Literature and Journalism Communication, Jishou University, Jishou, People’s Republic of China
| | - Jilin Shu
- College of Literature and Journalism Communication, Jishou University, Jishou, People’s Republic of China
| | - Xincheng Huang
- School of Economics and Management, Beijing Institute of Graphic Communication, Beijing, People’s Republic of China
| | - Yibo Wu
- School of Public Health, Peking University, Beijing, People’s Republic of China
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2
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Adleberg J, Benitez CL, Primiano N, Patel A, Mogel D, Kalra R, Adhia A, Berns M, Chin C, Tanghe S, Yi P, Zech J, Kohli A, Martin-Carreras T, Corcuera-Solano I, Huang M, Ngeow J. Fully Automated Measurement of the Insall-Salvati Ratio with Artificial Intelligence. J Imaging Inform Med 2024; 37:601-610. [PMID: 38343226 PMCID: PMC11031523 DOI: 10.1007/s10278-023-00955-1] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/17/2023] [Accepted: 09/19/2023] [Indexed: 04/20/2024]
Abstract
Patella alta (PA) and patella baja (PB) affect 1-2% of the world population, but are often underreported, leading to potential complications like osteoarthritis. The Insall-Salvati ratio (ISR) is commonly used to diagnose patellar height abnormalities. Artificial intelligence (AI) keypoint models show promising accuracy in measuring and detecting these abnormalities.An AI keypoint model is developed and validated to study the Insall-Salvati ratio on a random population sample of lateral knee radiographs. A keypoint model was trained and internally validated with 689 lateral knee radiographs from five sites in a multi-hospital urban healthcare system after IRB approval. A total of 116 lateral knee radiographs from a sixth site were used for external validation. Distance error (mm), Pearson correlation, and Bland-Altman plots were used to evaluate model performance. On a random sample of 2647 different lateral knee radiographs, mean and standard deviation were used to calculate the normal distribution of ISR. A keypoint detection model had mean distance error of 2.57 ± 2.44 mm on internal validation data and 2.73 ± 2.86 mm on external validation data. Pearson correlation between labeled and predicted Insall-Salvati ratios was 0.82 [95% CI 0.76-0.86] on internal validation and 0.75 [0.66-0.82] on external validation. For the population sample of 2647 patients, there was mean ISR of 1.11 ± 0.21. Patellar height abnormalities were underreported in radiology reports from the population sample. AI keypoint models consistently measure ISR on knee radiographs. Future models can enable radiologists to study musculoskeletal measurements on larger population samples and enhance our understanding of normal and abnormal ranges.
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Affiliation(s)
- J Adleberg
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - C L Benitez
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - N Primiano
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - A Patel
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - D Mogel
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - R Kalra
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - A Adhia
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - M Berns
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - C Chin
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - S Tanghe
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - P Yi
- University of Maryland, Baltimore, MD, USA
| | - J Zech
- Columbia University Medical Center, New York, NY, USA
| | - A Kohli
- UT Southwestern, Dallas, TX, USA
| | | | - I Corcuera-Solano
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - M Huang
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - J Ngeow
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Li HJ, Shen YL, Huang X, Liu S, Yi P. Application effect of multidisciplinary collaborative nursing process in emergency care of patients with hypertensive cerebral hemorrhage. Eur Rev Med Pharmacol Sci 2023; 27:2745-2750. [PMID: 37070873 DOI: 10.26355/eurrev_202304_31902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
OBJECTIVE The aim of the study was to analyze the effect of applying multidisciplinary collaborative nursing process (MCNP) in the emergency care of patients with hypertensive cerebral hemorrhage. PATIENTS AND METHODS A total of 124 patients with hypertensive cerebral hemorrhage admitted to Qinghai University Affiliated Hospital from January 2020 to January 2021 was divided into control group (treated with regular emergency care, n=64) and study group (treated with MNCP, n=58). The effect of emergency treatment was compared between the two groups. RESULTS Compared to the control group, initial treatment time, time of opening peripheral veins, first blood drawing time, time of imaging examination, emergency room treatment time, and hospital stay time were lower in MCNP group, the difference was significant (p<0.05). There were significant differences in Functional Independence Assessment (FIM) and National Institutes of Health Stroke Scale (NIHSS) scale scores between the control group and the MCNP group in treatment for 1 week in hospital (p<0.05). The level of total bile acid (TBA) and activated partial thromboplastin time (APTT) in the MCNP group were significantly lower than in the control group (p<0.05). The nursing satisfaction in MCNP was also improved compared to that in the control group (p<0.05). CONCLUSIONS MCNP enhances the rational improvement of patients' awareness, improves the comprehensive quality of emergency treatments and optimizes prognosis; therefore, it is worthy of clinical promotion and application.
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Affiliation(s)
- H-J Li
- Department of Emergency Center, Qinghai University Affiliated Hospital, Xining, Qinghai, China.
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Gong F, Yi P, Yu L, Fan S, Gao G, Jin Y, Zeng L, Li Y, Ma ZF. Media use degree and depression: A latent profile analysis from Chinese residents. Front Psychol 2023; 13:1070774. [PMID: 36733883 PMCID: PMC9887043 DOI: 10.3389/fpsyg.2022.1070774] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 12/28/2022] [Indexed: 01/18/2023] Open
Abstract
Background Previous studies have emphasized the media as an essential channel for understanding information about depression. However, they have not divided groups according to the degree of media use to study their differences in depression. Therefore, this study aims to explore the influence of media use on depression and the influencing factors of depression in people with different media use degrees. Methods Based on seven items related to media use, a total of 11, 031 respondents were categorized by the frequency of media use using latent profile analysis (LPA). Secondly, multiple linear regression analyzes were conducted to analyze the effects of depression in people with different degrees of media use. Finally, factors influencing depression among people with different degrees of media use were explored separately. Results All respondents were classified into three groups: media use low-frequency (9.7%), media use general (67.1%), and media use high-frequency (23.2%). Compared with media use general group, media use low-frequency (β = 0.019, p = 0.044) and media use high-frequency (β = 0.238, p < 0.001) groups are significantly associated with depression. The factors influencing depression in the population differed between media use low-frequency, media use general, and media use high-frequency groups. Conclusion The government and the appropriate departments should develop targeted strategies for improving the overall health status of people with different media use degrees.
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Affiliation(s)
- Fangmin Gong
- College of Literature and Journalism Communication, Jishou University, Jishou, China
| | - Pei Yi
- College of Literature and Journalism Communication, Jishou University, Jishou, China,Pei Yi,
| | - Lian Yu
- College of Public Health, Xi’an Jiaotong University Health Science Center, Xi'an, China,*Correspondence: Lian Yu,
| | - Siyuan Fan
- Department of Preventive Medicine, Yanjing Medical College, Capital Medical University, Beijing, China
| | - Guangze Gao
- Tongliao Clinical College, Inner Mongolia Medical University, Tongliao, China
| | - Yile Jin
- Baotou Clinical College, Inner Mongolia Medical University, Baotou, China
| | - Leixiao Zeng
- College of Journalism and Communication, Renmin University of China, Beijing, China
| | - Yang Li
- College of Communication and Art Design, University of Shanghai for Science and Technology, Shanghai, China
| | - Zheng Feei Ma
- Centre for Public Health and Wellbeing, School of Health and Social Wellbeing, College of Health, Science and Society, University of the West of England, Bristol, United Kingdom
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Gao Q, Xu H, Wang FH, Yi P, Yang TY, Li LP, Xia JQ, Zeng RX, Niu HL. [Pediatric pancreatic lesions: a clinicopathological analysis of 42 cases]. Zhonghua Bing Li Xue Za Zhi 2022; 51:861-867. [PMID: 36097903 DOI: 10.3760/cma.j.cn112151-20220302-00144] [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: 06/15/2023]
Abstract
Objective: To investigate the clinicopathological characteristics of pancreatic lesions in children. Methods: The clinicopathological data of pancreatic lesions in children were analyzed including 42 cases of pancreatic tumors diagnosed from January 2000 to May 2021 in Guangzhou Women's and Children's Medical Center, Guangzhou, China. Histological and immunohistochemical assessments were performed. Related literature was reviewed. Results: The 42 pediatric patients with pancreatic lesions aged 1 day to 12 years (mean, 4.25 years). There were 23 males and 19 females. Clinical presentations included abdominal masses, abdominal pain, vomiting and persistent hypoglycemia after birth. Ultrasound and computerized tomography examination showed space-occupying pancreatic lesions in 31 cases, but no detectable pancreatic lesions in 11 cases. Histologically, among the 42 cases, 22 cases (52.4%) were neoplastic, including 18 cases of epithelial origin. Nine cases of pancreatoblastoma showed that the epithelial tumor cells were arranged in a trabecular pattern, with squamous nests. Six cases of solid-pseudopapillary tumors revealed hemorrhagic and necrotic cysts and monomorphic epithelioid cells arranged in solid sheets, nests or pseudopapillae. Two cases of neuroendocrine tumors showed tumor cells arranged in cords or nests; one case had a mitotic count of about 3/10 high power field, and a Ki-67 index of about 5%, which was consistent with G2 neuroendocrine tumor; the other case showed tumor cells with cytological atypia, brisk mitoses, about 25/10 HPF and a Ki-67 index of about 80%, consistent with small-cell type neuroendocrine carcinoma. The case of acinar cell carcinoma showed high cellularity, tumor cells in solid, cord-like or acinar-like arrangement with little stroma, and monotonous tumor cells with single distinct nucleolus. There were 4 cases of mesenchymal tumors, including 3 cases of Kaposi's hemangioendothelioma and 1 case of inflammatory myofibroblastic tumor. Among the 20 cases (47.6%) of non-neoplastic lesions, there were 11 cases of hyperinsulinism with ATP-sensitive potassium channel abnormality (HAPCA). Severn cases of diffuse type HAPCA in which the islets scattered between the pancreatic acinar tissue, enlarged, and prominent nuclei. Three cases of focal type HAPCA showed pancreatic islet hyperplasia in the form of nested nodules (0.6-1.5 cm). One case of atypical type HAPCA had extensive islet hyperplasia in pancreatic tissue, and scattered proliferation of nest-like nodules was noted. There were also 7 cases of pseudocyst and 2 cases of congenital cyst. Immunohistochemically, pancreatoblastomas were diffusely positive for CKpan, CK8/18, and β-catenin (nuclear staining of squamous nests only). Solid-pseudopapillary tumors expressed CD10, cyclin D1, CD99, vimentin, CD56, and β-catenin (nuclear staining). Neuroendocrine tumors were positive for CK, Syn, NSE, CgA, CD56, and β-catenin (membranous staining). The acinar cell carcinoma was positive for CK8/18, trypsin, and β-catenin (membranous staining). Conclusions: Pancreatic lesions in children have a wide range of histopathological types. HAPCA is the most common lesion of newborns. Pediatric pancreatic tumors are rare and mostly malignant. It is important to recognize them and make correct pathological diagnoses.
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Affiliation(s)
- Q Gao
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health,Guangzhou 510623, China
| | - H Xu
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health,Guangzhou 510623, China
| | - F H Wang
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health,Guangzhou 510623, China
| | - P Yi
- Department of Pediatric Endocrine, Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health,Guangzhou 510623, China
| | - T Y Yang
- Department of Pediatric Surgery, Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health,Guangzhou 510623, China
| | - L P Li
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health,Guangzhou 510623, China
| | - J Q Xia
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health,Guangzhou 510623, China
| | - R X Zeng
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health,Guangzhou 510623, China
| | - H L Niu
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health,Guangzhou 510623, China
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Wang S, Xu W, Yi P, Yuan J, Li M, Su F, Shen W. Transformation of heavy metals via sludge composite conditioning. ScienceAsia 2022. [DOI: 10.2306/scienceasia1513-1874.2022.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Jingzhu Z, Xiangqian Z, Ming G, Yi P, Jiadong C, Xinwei Y, Guangwei X. Clinical challenges with calcitonin-negative medullary thyroid carcinoma: three case reports and a review of the literature. Ann R Coll Surg Engl 2021; 104:221-230. [PMID: 34767473 DOI: 10.1308/rcsann.2020.7118] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Medullary thyroid carcinoma (MTC) is relatively rare, and has the main feature of calcitonin (Ct) secretion. However, a few cases of MTC with negative serum calcitonin have been reported in the literature, so the diagnosis and follow up of Ct-negative MTCs are still a challenge. Here we present three cases of Ct-negative MTCs, illustrating the rarity of the disease and challenges in managing it, together with a review of the literature of 39 MTCs with negative serum Ct.
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Affiliation(s)
- Z Jingzhu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, P. R. China.,Tianjin's Clinical Research Centre for Cancer, P. R. China
| | - Z Xiangqian
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, P. R. China.,Tianjin's Clinical Research Centre for Cancer, P. R. China
| | - G Ming
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, P. R. China.,Tianjin's Clinical Research Centre for Cancer, P. R. China
| | - P Yi
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, P. R. China.,Tianjin's Clinical Research Centre for Cancer, P. R. China
| | - C Jiadong
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, P. R. China.,Tianjin's Clinical Research Centre for Cancer, P. R. China
| | - Y Xinwei
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, P. R. China.,Tianjin's Clinical Research Centre for Cancer, P. R. China
| | - Xu Guangwei
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, P. R. China.,Tianjin's Clinical Research Centre for Cancer, P. R. China
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Niu HL, Yi P, Gao Q, Wang FH, Chen ZR, Li LP, Xia JQ, Cao Y, Zeng RX. [Gonadal neoplastic related lesions in children with disorders of sexual development: a clinicopathological study of twelve cases]. Zhonghua Bing Li Xue Za Zhi 2021; 50:1145-1150. [PMID: 34619868 DOI: 10.3760/cma.j.cn112151-20210327-00239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinicopathological features of gonadal neoplastic related lesions in children with disorders of sexual development (DsD). Methods: The clinical manifestations, chromosomal karyotype, histology and immunophenotype of 12 cases of neoplastic related lesions from Guangzhou Women and Children's Medical Center, Guangzhou were analyzed during Jan 2015 to May 2020. Results: Twelve cases of neoplastic related lesions were screened in 205 cases of DsD, and 6 patients with gonadal germ cell neoplasia aged 3-13 years with an average age of 8.3 years. There were 2 males and 4 females. Clinical features showed malformation of external genitalia in 2 cases, short stature in 2 cases, clitoral enlargement in 1 case, lower abdominal pain and a huge pelvic mass in 1 case. Chromosomal karyotyping of peripheral blood showed 2 cases of 46XY and 4 cases of 45X/46XY. Fourteen gonadal specimens were examined. Microscopically, 1 case showed dysgerminoma in left ovary, and malignant mixed germ cell tumors in right ovary, as well as gonadoblastoma (GB) and undifferentiated gonadal tissue (UGT). The remaining 5 cases were all precursor lesions of germ cell tumor. Six specimens showed GB, 3 of UGT, and 3 specimens showed germ cell neoplasia in situ (GCNIS), one of which was accompanied by intratubular seminoma and 1 was GB with GCNIS. The other 6 patients with DsD were aged from 8 months to 2 years and 5 months, including 5 males and 1 females. Clinical manifestations showed 5 cases of hypospadias and 1 case of bilateral indirect inguinal hernia. Microscopically, 6 cases showed maturation delay of gonocytes in seminiferous tubules. Immunohistochemically, the primordial germ cells/gonocytes expressed OCT3/4, PLAP and c-KIT in the 12 cases. Conclusion: Gonadal neoplasia in children with DsD is mainly precursor lesions of germ cell tumor and improved understanding of these lesions is of great significance.
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Affiliation(s)
- H L Niu
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - P Yi
- Department of Pediatric Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - Q Gao
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - F H Wang
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - Z R Chen
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - L P Li
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - J Q Xia
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - Y Cao
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - R X Zeng
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
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Wang S, Li T, Yi P, Yuan J. Modified phoenix tree leaves and their adsorption removal of Ca2+ from wastewater. ScienceAsia 2021. [DOI: 10.2306/scienceasia1513-1874.2021.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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10
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Li H, Yi P, Su J, Xu C, Cao L, Li M, Chen J. The Role of NRF2 Signaling Regulated by Autophagy Adaptor P62 in Radiation-Induced Myocardial Injury. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Yi P, Li H, Su J, Cao L, Xu C, Li M, Chen J. Early Detection of Trastuzumab and Radiation Induced Cardiotoxicity in Mice Using Echocardiography and PET/CT. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Li H, Yi P, Cao L, Li M, Chen J. Pituitary Adenylate Cyclase-Activating Polypeptide Ameliorates Radiation-Induced Cardiac Injury. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Wang Y, Han Y, Yi P, Qi W, Cao L, Cai G, Chen J, Xu C. Internal Mammary Lymph Nodes Involvement in Patients with Breast Cancer: Anatomical Characteristics and Implication for Target Definition. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Yi P, Niu HL, Gao Q, Wang FH, Jia W, Chen ZR, Xia JQ, Li LP, Cao Y, Zeng RX. [Pathologic features on gonadal changes of sexual developmental disorders in children]. Zhonghua Bing Li Xue Za Zhi 2018; 47:531-535. [PMID: 29996319 DOI: 10.3760/cma.j.issn.0529-5807.2018.07.010] [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 investigate the pathologic features of gonadal tissues of disorders of sexual development (DSD) in children. Methods: Fifty-three cases of gonadal developmental disorders were collected from July 2015 to August 2017 at Guangzhou Women and Children's Medical Center. Clinical manifestations, karyotypes, sex hormone levels, ultrasound imaging, histology and immunophenotype of gonadal tissues were analyzed. Results: The age of patients ranged from 7 months to 17 years with an average of (50.7 ± 47.1) months. Social genders of the patients included 32 males and 21 females. Forty-eight patients had abnormal sex hormone levels. Clinical presentations included: toward female genitalia in 25 cases, male genitalia tendency in 17 cases and ambiguous external genitalia in 11 cases. Hypospadias was seen in 31 cases and short stature was seen in 8 cases. Chromosomal karyotyping of peripheral blood revealed 23 cases of sex chromosome disorders, 22 cases of 46 XY disorders, of which 3 cases were 5α-reductase deficiency and 8 cases of 46 XX disorders. Ultrasound examination showed cryptorchidism in 30 cases, including 16 cases of unilateral, 14 cases of bilateral and 1 case presenting a huge pelvic tumor. A total of 97 gonadal tissues from 53 cases of DSD were examined, including 9 cases of unilateral and 44 cases of bilateral gonads. Microscopically, 55 gonads (56.7%) showed dysplastic testes including 17 unilateral and 19 bilateral gonads. Fourteen were streak gonads (14.4%) including 8 unilateral and 3 bilateral gonadal tissues. Nine streak gonad with epithelial cord-like structures (9.3%) were found, of which 5 were unilateral and 2 were bilateral lesions. Seven gonads were ovotestis (7.2%), unilateral in 5 cases (the other side of the gonads of ovary in 4 cases, 1 case of dysplastic testes) and bilateral in 1 case. Seven gonads showed follicular-rich ovarian tissue (7.2%). One case showed bilateral dysplastic testes with gonadoblastoma and ectopic adrenal cortex. One case of streak gonad showed epithelial cord-like structures and undifferentiated glandular tissue embedded in malignant mixed germ cell tumors (mixed gonadoblastoma, dysgerminoma, mature teratoma and yolk sac tumor). One case had testicular microlithiasis. Uterus and fallopian tube structures were found in 11 cases. Immunohistochemical stains were performed in 15 cases. D2-40, PLAP and CKIT were expressed in germ cells and Calretinin, WT1 and inhibin were positive in Setoli cells. SALL4 and OCT3/4 were positive in 3 cases. Inhibin highlighted interstitial Leydig cells in 2 cases. GPC3 was positive in yolk sac tumor component. Conclusions: Gonadal dysgenesis presents a broad spectrum of gonadal phenotypes with variable degrees of differentiation. The development of bilateral gonadal tissues has certain variability. Chromosomal karyotypes have no correlation with gonadal phenotypes. Accurate histopathologic diagnosis of gonadal dysgenesis plays an important role in the treatment and prognosis of the patient.
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Affiliation(s)
- P Yi
- Department of Pediatric Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
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Yi P, Hu X, Hu B, Wen C, Li Z. Identification and expression of cathepsin B from the freshwater mussel Cristaria plicata. Comp Biochem Physiol B Biochem Mol Biol 2018; 225:21-28. [PMID: 29981453 DOI: 10.1016/j.cbpb.2018.06.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 06/19/2018] [Accepted: 06/21/2018] [Indexed: 11/28/2022]
Abstract
Cathepsin B plays crucial roles in host immune defense against pathogen infection. In present study, a cathepsin B gene from the freshwater mussel, Cristaria plicata (CpCathB) was cloned and characterized. The full-length cDNA of CpCathB was 1825 bp, and contained a 5' untranslated region (UTR) of 36 nucleotides, an open reading frame (ORF) of 1044 bp and a 3' UTR of 745 bp with a poly (A) tail. The deduced CpCathB protein was encoded as a preproenzyme with 347 amino acid residues and predicted molecular weight of 38.55 kDa. Sequence alignment revealed that CpCathB protein shared 56% - 60.7% identity comparison with other species. The predicted tertiary structure of CpCathB protein was highly similar to that of human. The CpCathB mRNA was expressed in hemocytes, hepatopancreas, adductor muscle, gills and mantle tissues of healthy mussels, and the highest expression level was in hepatopancreas. The transcripts of CpCathB were increased in hemocytes and hepatopancreas from mussels after Aeromonas hydrophila challenge. Moreover, the recombinant CpCathB was expressed in the Escherichia coli Rosetta-gami (DE3) strain. The maximum titer of the anti-CpCathB polyclonal antibodies was 1:640,000.The CpCathB protein had a higher expression in hepatopancreas and mantle and a lower level in hemocytes.
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Affiliation(s)
- P Yi
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - X Hu
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - B Hu
- School of Life Science, Nanchang University, Nanchang 330031, China.
| | - C Wen
- School of Life Science, Nanchang University, Nanchang 330031, China.
| | - Z Li
- School of Life Science, Nanchang University, Nanchang 330031, China
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Choi W, Yi P, Kim T, Huh E, Lee A, Hui F. Abstract No. 469 Representation of developing countries in interventional radiology research. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Golden S, Golden E, Yi P, Ozkan O. 4:12 PM Abstract No. 300 Train where you want to work? The association of residency and fellowship with academic attending practice location. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Huh E, Yi P, Hui F. 4:21 PM Abstract No. 80 Readability of patient education materials from RadiologyInfo.org: has there been progress over the past 5 years? J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Huh E, Yi P, Hui F. Abstract No. 474 Readability of Spanish-language patient education materials from RadiologyInfo.org. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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21
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Niu HL, Yi P, Wang H, Wang FH, Liu W, Gao Q, Chen ZR, Xia JQ, Zeng RX. [Infantile Dieulafoy's disease of bronchus: repor/t of a case//]. Zhonghua Bing Li Xue Za Zhi 2017; 46:731-732. [PMID: 29050081 DOI: 10.3760/cma.j.issn.0529-5807.2017.10.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Wei W, Jing ZX, Ke Z, Yi P. Sirtuin 7 plays an oncogenic role in human osteosarcoma via downregulating CDC4 expression. Am J Cancer Res 2017; 7:1788-1803. [PMID: 28979804 PMCID: PMC5622216] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 08/10/2017] [Indexed: 06/07/2023] Open
Abstract
It is still a controversy whether the role of Sirtuin 7 (SIRT7) is an oncogene or a tumor suppressor gene in cancer as SIRT7 may have different functions in different types of cancer. Particularly, the specific roles of SIRT7 in the progression of osteosarcoma remain undiscovered. The main aim of this study is to identify the expression of SIRT7 in osteosarcoma and explore the biological functions of SIRT7 in regulating cellular processes of osteosarcoma cells. Here, we show that SIRT7 expression was significantly higher in osteosarcoma tissues and osteosarcoma cell lines than in non-tumor tissues and an immortalized normal cell line, respectively. Moreover, elevated SIRT7 levels in clinical samples indicate a poor prognosis of osteosarcoma patients. SIRT7 knockdown reduces proliferation, migration, invasion, tumor formation, and metastasis of osteosarcoma cells, while SIRT7 overexpression has the opposite effects. Mechanistically, SIRT7 down regulates H3K18ac expression and decreases H3K18ac binding to the promoter region of CDC4, leading to the inhibition of CDC4 transcription. Furthermore, the silencing of CDC4 partially rescued SIRT7 knockdown-mediated inhibitory effects on proliferation, migration, and invasion of osteosarcoma cells. In summary, our results show that SIRT7 promotes proliferation, migration, and invasion of osteosarcoma cells through targeting CDC4, suggesting a potential therapeutic target for SIRT7 based therapy for osteosarcoma.
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Affiliation(s)
- Wang Wei
- Department of Bone and Soft-Tissue Tumor Surgery, Cancer Hospital of China Medical UniversityShenyang 110042, Liaoning Province, PR China
- Department of Bone and Soft-Tissue Tumor Surgery, Liaoning Cancer Hospital & InstituteShenyang 110042, Liaoning Province, PR China
| | - Zhang Xiao Jing
- Department of Bone and Soft-Tissue Tumor Surgery, Cancer Hospital of China Medical UniversityShenyang 110042, Liaoning Province, PR China
- Department of Bone and Soft-Tissue Tumor Surgery, Liaoning Cancer Hospital & InstituteShenyang 110042, Liaoning Province, PR China
| | - Zheng Ke
- Department of Bone and Soft-Tissue Tumor Surgery, Cancer Hospital of China Medical UniversityShenyang 110042, Liaoning Province, PR China
- Department of Bone and Soft-Tissue Tumor Surgery, Liaoning Cancer Hospital & InstituteShenyang 110042, Liaoning Province, PR China
| | - Pei Yi
- Department of Bone and Soft-Tissue Tumor Surgery, Cancer Hospital of China Medical UniversityShenyang 110042, Liaoning Province, PR China
- Department of Bone and Soft-Tissue Tumor Surgery, Liaoning Cancer Hospital & InstituteShenyang 110042, Liaoning Province, PR China
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Zhang HW, Sun YQ, Li Y, Zhou XD, Tang XZ, Yi P, Murad A, Hussein S, Alshamsi D, Aldahan A, Yu ZB, Chen XG, Mugwaneza VDP. Quality assessment of groundwater from the south-eastern Arabian Peninsula. Environ Monit Assess 2017; 189:411. [PMID: 28735434 DOI: 10.1007/s10661-017-6092-2] [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] [Received: 07/27/2016] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
Assessment of groundwater quality plays a significant role in the utilization of the scarce water resources globally and especially in arid regions. The increasing abstraction together with man-made contamination and seawater intrusion have strongly affected groundwater quality in the Arabia Peninsula, exemplified by the investigation given here from the United Arab Emirates, where the groundwater is seldom reviewed and assessed. In the aim of assessing current groundwater quality, we here present a comparison of chemical data linked to aquifers types. The results reveal that most of the investigated groundwater is not suitable for drinking, household, and agricultural purposes following the WHO permissible limits. Aquifer composition and climate have vital control on the water quality, with the carbonate aquifers contain the least potable water compared to the ophiolites and Quaternary clastics. Seawater intrusion along coastal regions has deteriorated the water quality and the phenomenon may become more intensive with future warming climate and rising sea level.
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Affiliation(s)
- H W Zhang
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
- College of Hydrology and Water Resources, Hohai University, Nanjing, China
| | - Y Q Sun
- Department of Energy & Resources Engineering and Institute of Water Sciences ,College of Engineering, Peking University, Beijing, China
| | - Y Li
- College of Hydrology and Water Resources, Hohai University, Nanjing, China
| | - X D Zhou
- College of Hydrology and Water Resources, Hohai University, Nanjing, China
| | - X Z Tang
- College of Hydrology and Water Resources, Hohai University, Nanjing, China
| | - P Yi
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China.
- College of Hydrology and Water Resources, Hohai University, Nanjing, China.
| | - A Murad
- Department of Geology, United Arab Emirates University, POB 15551, Al Ain, UAE
| | - S Hussein
- Department of Geology, United Arab Emirates University, POB 15551, Al Ain, UAE
| | - D Alshamsi
- Department of Geology, United Arab Emirates University, POB 15551, Al Ain, UAE
| | - A Aldahan
- Department of Geology, United Arab Emirates University, POB 15551, Al Ain, UAE.
| | - Z B Yu
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
- College of Hydrology and Water Resources, Hohai University, Nanjing, China
| | - X G Chen
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
- College of Hydrology and Water Resources, Hohai University, Nanjing, China
| | - V D P Mugwaneza
- College of Hydrology and Water Resources, Hohai University, Nanjing, China
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24
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Yi P, Tsai C, Chang F. 0076 TWO NOVEL ADENOSINE ANALOGUES AS HYPNOTICS. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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25
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Niu HL, Zhou SY, Lin QQ, Yi P, Wang FH, Gao Q, Chen ZR, Xia JQ, Zheng HC, Zeng RX. [Clinicopathologic study of pediatric vascular anomalies: a report of 117 cases]. Zhonghua Bing Li Xue Za Zhi 2017; 45:252-7. [PMID: 27033389 DOI: 10.3760/cma.j.issn.0529-5807.2016.04.008] [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: 11/05/2022]
Abstract
OBJECTIVE To study the clinicopathologic features of pediatric vascular anomalies and application of ISSVA classification. METHODS The clinical features, histopathologic findings and immunohistochemical results were analyzed in 117 cases of pediatric vascular anomalies encountered during the period from May 2014 to May 2015. RESULTS A total of 117 cases of vascular anomalies were studied. The age of patients ranged from 18 hours after birth to 11 years (mean age =34 months and median age =27 months). There were 73 male patients and 44 female patients, with the male-to-female ratio being 1.7∶1.0. Congenital skin lesions were found in 37 cases (31.6%). The common sites of involvement included head and neck region (46 cases, 39.3%), trunk (28 cases, 23.9%), extremities (14 cases, 12.0%) and internal viscera (31 cases, 26.5%). According to the new ISSVA classification, there were 74 cases of vascular malformations and 43 cases of vascular neoplasms (ratio=1.7∶1.0). The commonest vascular tumor encountered was infantile hemangioma (21 cases, 48.8%), including 17 cases in proliferative phase and 4 cases in involutive phase. Thirteen cases (23.3%) of congenital hemangioma were found, with 8 cases of rapidly involuting congenital hemangioma and 5 cases of non-involutive congenital hemangioma. Three of the congenital hemangioma occurred in liver. There were 5 cases (11.6%) of pyogenic granuloma, 3 cases (7.0%) of tufted angioma and 1 case (2.3%) of Kaposiform hemangioendothelioma. Amongst the 74 cases of vascular malformations encountered, lymphatic malformation was found in 47 cases (63.5%), venous malformation in 15 cases (20.2%), lymphatic-venous malformation in 11 cases (14.9%) and arteriovenous malformation in 1 case (1.4%). All cases of vascular anomalies were all positive for CD31 on immunostaining. Glut1 and CD15 were positive both in proliferative and involutive phases of the 21 cases of infantile hemangioma, while other vascular tumors and vascular malformations were negative. Forty-seven cases of lymphatic malformation and 11 cases of lymphatic-venous malformation showed D2-40 expression. Focal positivity for D2-40 was demonstrated in 3 cases of tufted angioma and 1 case of Kaposiform hemangioendothelioma. CONCLUSIONS Vascular anomalies affecting infants and children include tumors and malformations. Accurate histopathologic diagnosis and ISSVA classification of the various types of vascular anomalies play an important role in clinical management.
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Affiliation(s)
- H L Niu
- Department of Pathology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
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Su R, Dong L, Zou D, Zhao H, Ren Y, Li F, Yi P, Li L, Zhu Y, Ma Y, Wang J, Wang F, Yu J. microRNA-23a, -27a and -24 synergistically regulate JAK1/Stat3 cascade and serve as novel therapeutic targets in human acute erythroid leukemia. Oncogene 2016; 35:6001-6014. [DOI: 10.1038/onc.2016.127] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 03/05/2016] [Accepted: 03/07/2016] [Indexed: 01/01/2023]
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Schrott L, Jackson K, Yi P, Dietz F, Johnson G, Basting T, Purdum G, Tyler T, Rios J, Castor T, Alexander J. Acute Oral Bryostatin-1 Administration Improves Learning Deficits in the APP/PS1 Transgenic Mouse Model of Alzheimer’s Disease. Curr Alzheimer Res 2015; 12:22-31. [DOI: 10.2174/1567205012666141218141904] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 11/17/2014] [Accepted: 11/30/2014] [Indexed: 11/22/2022]
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Murad A, Zhou XD, Yi P, Alshamsi D, Aldahan A, Hou XL, Yu ZB. Natural radioactivity in groundwater from the south-eastern Arabian Peninsula and environmental implications. Environ Monit Assess 2014; 186:6157-6167. [PMID: 24903925 DOI: 10.1007/s10661-014-3846-y] [Citation(s) in RCA: 2] [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] [Received: 09/19/2013] [Accepted: 05/21/2014] [Indexed: 06/03/2023]
Abstract
Groundwater is the most valuable resource in arid regions, and recognizing radiological criteria among other water quality parameters is essential for sustainable use. In the investigation presented here, gross-α and gross-β were measured in groundwater samples collected in the south-eastern Arabian Peninsula, 67 wells in Unite Arab Emirates (UAE), as well as two wells and one spring in Oman. The results show a wide gross-α and gross-β activities range in the groundwater samples that vary at 0.01∼19.5 Bq/l and 0.13∼6.6 Bq/l, respectively. The data show gross-β and gross-α values below the WHO permissible limits for drinking water in the majority of the investigated samples except those in region 4 (Jabel Hafit and surroundings). No correlation between groundwater pH and the gross-α and gross-β, while high temperatures probably enhance leaching of radionuclides from the aquifer body and thereby increase the radioactivity in the groundwater. This conclusion is also supported by the positive correlation between radioactivity and amount of total dissolved solid. Particular water purification technology and environmental impact assessments are essential for sustainable and secure use of the groundwater in regions that show radioactivity values far above the WHO permissible limit for drinking water.
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Affiliation(s)
- A Murad
- Department of Geology, United Arab Emirates University, Al Ain, United Arab Emirates
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Gao JM, Liu Y, Li W, Cui ZY, Dong YB, Lu J, Xia ZW, Yi P, Yang QW. Inversion of infrared imaging bolometer based on one-dimensional and three-dimensional modeling in HL-2A. Rev Sci Instrum 2014; 85:043505. [PMID: 24784605 DOI: 10.1063/1.4870408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Linear regularization has been applied to the HL-2A infrared imaging bolometer to reconstruct local plasma emission with one-dimensional (1D) and three-dimensional (3D) modeling under the assumption of toroidal symmetry. In the 3D modeling, a new method to calculate the detector point response function is introduced. This method can be adapted to an arbitrarily shaped pinhole. With the full 3D treatment of the detector geometry, up to 50% of the mean-squared error is reduced compared with the 1D modeling. This is attributed to the effects of finite detector size being taken into account in the 3D modeling. Meanwhile, the number of the bolometer pixels has been optimized to 20 × 20 by making a trade-off between the number of bolometer pixels and the sensitivity of the system. The plasma radiated power density distributions have been calculated as a demonstration using 1D modeling and 3D modeling, respectively.
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Affiliation(s)
- J M Gao
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Y Liu
- Southwestern Institute of Physics, Chengdu 610041, China
| | - W Li
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Z Y Cui
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Y B Dong
- Southwestern Institute of Physics, Chengdu 610041, China
| | - J Lu
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Z W Xia
- Southwestern Institute of Physics, Chengdu 610041, China
| | - P Yi
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Q W Yang
- Southwestern Institute of Physics, Chengdu 610041, China
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Becker F, Yi P, Al-Kofahi M, Ganta VC, Morris J, Alexander JS. Lymphatic dysregulation in intestinal inflammation: new insights into inflammatory bowel disease pathomechanisms. Lymphology 2014; 47:3-27. [PMID: 25109166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Alterations in the intestinal lymphatic network are well-established features of human and experimental inflammatory bowel disease (IBD). Such lymphangiogenic expansion might enhance classic intestinal lymphatic transport, eliminating excess accumulations of fluid, inflammatory cells and mediators, and could therefore be interpreted as an 'adaptive' response to acute and chronic inflammatory processes. However, whether these new lymphatic vessels are functional, unregulated or immature (and what factors may promote 'maturation' of these vessels) is currently an area under intense investigation. It is still controversial whether impaired lymphatic function in IBD is a direct consequence of the intestinal inflammation, or a preceding lymphangitis-like event. Current research has uncovered novel regulatory factors as well as new roles for familiar signaling pathways, which appear to be linked to inflammation-induced lymphatic alterations. The current review summarizes mechanisms amplifying lymphatic dysregulation and remodeling in intestinal inflammation at the organ, cell and molecular levels and discusses the influence of lymphangiogenesis and intestinal lymphatic transport function as they relate to IBD pathophysiology.
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Yi P, Chang F. Amygdala opioid receptors mediate the electroacupuncture-induced deterioration of sleep disruptions in epilepsy rats. Sleep Med 2013. [DOI: 10.1016/j.sleep.2013.11.756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Yan YH, Yi P, Zheng YR, Yu LL, Han J, Han XM, Li L. Screening for preeclampsia pathogenesis related genes. Eur Rev Med Pharmacol Sci 2013; 17:3083-3094. [PMID: 24302191] [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: 06/02/2023]
Abstract
OBJECTIVES Preeclampsia is a complication of pregnancy that severely threatens the health of the mother and infant, yet the mechanism of pathogenesis remains unclear. In this article, gene array technology was applied to identify the genes related to the pathogenesis of preeclampsia, and to explore the regulatory effect of epigenetic modification by on these genes. PATIENTS AND METHODS Placental tissue of preeclampsia patients was collected, and DNA methylation arrays and gene expression microarrays were used to identify the genes. The effect of methylation on the regulation of genes related to the pathogenesis of preeclampsia was also investigated. RESULTS The expression levels of more than ten genes were found to be significantly altered in the placental tissue of patients with preeclampsia as measured by gene expression microarray. This study also identified more than ten genes with notable changes in expression level as well as methylation level. The gene expression of CUEDC1 and DHX34 were verified in this study and the findings were consistent with previous reports. CONCLUSIONS Our research indicates that the occurrence of preeclampsia is correlates closely with differences in the expression of specific genes, which may be regulated through methylation.
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Affiliation(s)
- Y-H Yan
- Department of Obstetrics and Gynecology, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China.
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Li X, Yi R, Liu B, Zheng A, Yu X, Yi P. Synthesis of New Spiro Isoxazoline-Pyrrolizinone Derivativesvia1,3-Dipolar Cycloaddition of Nitrile Oxide. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1610] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- X. Li
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - R. Yi
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - B. Liu
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - A. Zheng
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - X. Yu
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - P. Yi
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
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Yi P, Chen XG, Bao DX, Qian RZ, Aldahan A, Tian FY, Possnert G, Bryhn AC, Gu TF, Hou XL, He P, Yu ZB, Wang B. Model simulation of inflow water to the Baltic Sea based on ¹²⁹I. Appl Radiat Isot 2013; 82:223-31. [PMID: 24056000 DOI: 10.1016/j.apradiso.2013.07.034] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 07/15/2013] [Accepted: 07/19/2013] [Indexed: 10/26/2022]
Abstract
The semi-enclosed Baltic Sea represents a vital economic and recreational resource for more than 90 million people inhabiting its coasts. Extensive contamination of this sea by a variety of anthropogenic pollutants has raised the concern of the people in the region. Quantifying seawater inflow is crucial for estimating potential environmental risks as well as to find the best remedial strategy. We present here a model to estimate water inflow from the North Sea to the Baltic Sea by utilizing ¹²⁹I as a tracer. The results predicted inflow range of 230-450 km³/y with best fit value around 330 km³/y from the North Sea to the Baltic Sea during 1980-1999. Despite limited time series data on ¹²⁹I, the model presented here demonstrates a new management tool for the Baltic Sea to calculate inflow water compared to conventional methods (such as salinity, temperature and hydrographic models).
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Affiliation(s)
- P Yi
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, PR China; College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China; Department of Earth Sciences, Uppsala University, Uppsala, Sweden
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Gao JM, Liu Y, Li W, Lu J, Dong YB, Xia ZW, Yi P, Yang QW. Minimum Fisher regularization of image reconstruction for infrared imaging bolometer on HL-2A. Rev Sci Instrum 2013; 84:093503. [PMID: 24089825 DOI: 10.1063/1.4820920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
An infrared imaging bolometer diagnostic has been developed recently for the HL-2A tokamak to measure the temporal and spatial distribution of plasma radiation. The three-dimensional tomography, reduced to a two-dimensional problem by the assumption of plasma radiation toroidal symmetry, has been performed. A three-dimensional geometry matrix is calculated with the one-dimensional pencil beam approximation. The solid angles viewed by the detector elements are taken into account in defining the chord brightness. And the local plasma emission is obtained by inverting the measured brightness with the minimum Fisher regularization method. A typical HL-2A plasma radiation model was chosen to optimize a regularization parameter on the criterion of generalized cross validation. Finally, this method was applied to HL-2A experiments, demonstrating the plasma radiated power density distribution in limiter and divertor discharges.
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Affiliation(s)
- J M Gao
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, China
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Yi P, Possnert G, Aldahan A, Hou XL, Bryhn AC, He P. 129I in the Baltic Proper and Bothnian Sea: application for estimation of water exchange and environmental impact. J Environ Radioact 2013; 120:64-72. [PMID: 23434726 DOI: 10.1016/j.jenvrad.2013.01.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 01/05/2013] [Accepted: 01/07/2013] [Indexed: 05/08/2023]
Abstract
We report here new data and a mass balance model for (129)I in the Baltic Proper and the Bothnian Sea covering the period from November-December 2009. The results showed that the general (129)I concentrations in the Bothnian Sea were two-four folds lower than in the Baltic Proper for both surface and deep water. Water exchange between the two basins based on the (129)I mass balance model suggests fluxes from the Baltic Proper to the Bothnian Sea and vice versa at 980 km(3)/y (600-1400 km(3)/y) and 1180 km(3)/y (780-1600 km(3)/y) respectively. Water retention time (residence time) in the Bothnian Sea was estimated at up to 4 years. Applying the (129)I exchange model, an estimate of total phosphorus and nitrogen inflow from the Baltic Proper to the Bothnian Sea indicates values of 20 ± 7 × 10(3) tons/y and 300 ± 50 × 10(3) tons/y respectively. The values for the outflow from the Bothnian Sea to the Baltic Proper hold 12 ± 3 × 10(3) tons/y for total phosphorus and 283 ± 55 × 10(3) tons/y for total nitrogen. These data and application of (129)I as a tracer of water masses provide information on small scale salinity changes which are vital for accurate understanding of the Baltic Sea ecosystems evolution through time.
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Affiliation(s)
- P Yi
- College of Hydrology and Water Resources, Hohai University, Nanjing, China.
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Yi P. Assessment of the relationships between iodine isotopes (127I, 129I) and atmospheric elements in precipitation from Sweden. J Radioanal Nucl Chem 2013. [DOI: 10.1007/s10967-012-1906-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wang G, He M, Yi P, Wang J, Li B, Li J, Fu Y, Bai L, Fu Q. Comparison of effects of vanadium absorbed by Coprinus comatus with those of inorganic vanadium on bone in streptozotocin-diabetic rats. Biol Trace Elem Res 2012; 149:391-8. [PMID: 22549703 DOI: 10.1007/s12011-012-9437-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Accepted: 04/19/2012] [Indexed: 11/27/2022]
Abstract
The purpose of this study was to compare the effect of vanadium absorbed by Coprinus comatus (VACC) with inorganic vanadium (vanadium nitrate, IV) in preventing diabetes-related osteopenia in streptozotocin-diabetic rats. Sixty Wistar female rats used were divided into four groups: (1) normal rats (control), (2) diabetic rats, (3) diabetic rats treated with VACC, and (4) diabetic rats treated with vanadium nitrate. A standardized type 1-like diabetes model was induced by injection of streptozotocin. After the rats were treated orally with VACC and IV respectively, plasma glucose, body weights, micro-CT, biomechanical testing, and histomorphometry were examined. In addition, bone samples were obtained to evaluate the content of mineral substances in bones. Treatments were performed over a 12-week period. Both VACC and IV have a positive effect on plasma glucose and body weights of STZ-induced diabetic rats. However, treatment with IV only caused a 39.6 % decrease in glucose levels and a 14.6 % increase in body weights, whereas VACC decreased plasma glucose and increased body weights by up to 52.2 and 24.5 %, respectively. At the same time, VACC significantly improved trabecular microstructure and mechanical strength, while IV did not exhibit desirable such effects. Also, bone Ca and bone P were not significantly increased by IV. These results indicated that both VACC and IV have hypoglycemic activity on diabetic rats, while IV did not improve bone properties. In conclusion, this study suggests that VACC improves diabetes-related bone dysfunction, primarily by improving the diabetic states.
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Affiliation(s)
- Guangbin Wang
- Department of Orthopaedics, ShengJing Hospital, China Medical University, Shenyang, People's Republic of China
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Yi P, Aldahan A, Possnert G, Hou XL, Hansen V, Wang B. 127I and 129I species and transformation in the Baltic proper, Kattegat, and Skagerrak basins. Environ Sci Technol 2012; 46:10948-10956. [PMID: 22989332 DOI: 10.1021/es301979r] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Occurrence of anthropogenic (129)I in seawater has provided invaluable information about water circulation and exchange rates, but results on (129)I species (iodide and iodate) are limited and only available for surface water. We here present the first extensive results on (129)I and (127)I species in samples of seawater depth profiles, which were collected in August 2006 and April 2007 in the Skagerrak, Kattegat, and Baltic Proper. The results expose ≤10% annual reduction of iodate as (129)I is transported from the English Channel along the Dutch coast and German Bight into the Skagerrak and Kattegat. The results also suggest strong variability between surface and bottom seawater with respect to the predominant iodine species. Distribution of iodide and iodate of both (127)I and (129)I in the Kattegat mainly reflects water mixing process rather than speciation transformation. In water of the Baltic Proper, high (127)I(-)/(127)IO(3)(-) and (129)I(-)/(129)IO(3)(-) values suggest effective reduction of iodate with a maximum rate of 8 × 10(-7) ((127)IO(3)(-)) and 6 × 10(-14) ((129)IO(3)(-)) (g/m(3).day). The reduction process of iodate seems to be related to decomposition of organic matter and photochemically induced reactions.
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Affiliation(s)
- P Yi
- Department of Earth Sciences, Uppsala University, Uppsala, Sweden.
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Yi P, Schrott L, Castor TP, Alexander JS. Bryostatin-1 vs. TPPB: dose-dependent APP processing and PKC-α, -δ, and -ε isoform activation in SH-SY5Y neuronal cells. J Mol Neurosci 2012; 48:234-44. [PMID: 22700373 PMCID: PMC3413820 DOI: 10.1007/s12031-012-9816-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Accepted: 05/16/2012] [Indexed: 01/17/2023]
Abstract
Activation of the α-secretase processing pathway of amyloid precursor protein (APP) is recognized as an important mechanism which diverts APP processing from production of beta-amyloid (Aβ) to non toxic sAPPα, decreasing Alzheimer’s disease (AD) plaque formation and AD-associated cognitive deficits. Two potent classes of PKC modulators can activate the α-secretase pathway, the benzo/indolactams and bryostatin/bryologues. While both modulate PKC-dependent APP processing, no direct comparisons of their relative pharmacological potencies have been accomplished which could assist in the development of AD therapies. In this study, we measured the activation of α-secretase APP processing and PKC-α, -δ, and -ε induced by the benzolactam-APP modulator TPPB and bryostatin-1 in the neuroblastoma cell line SH-SY5Y which expresses APP and α- and β-secretase processing mechanisms. Bryostatin-1 produced a more rapid, potent, and sustained activation of α-secretase APP processing than TPPB and selectively activated PKC-δ and PKC-ε. Although TPPB also activated α-secretase, its potency was approximately 10- to 100-fold lower, possibly reflecting lower PKC-δ and -ε activation. Because bryostatin-1 is a highly potent PKC-δ and -ε activator which activates α-secretase APP processing, further characterization of bryostatin-1/bryologues may help refine their use as important tools for the clinical management of AD.
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Affiliation(s)
- P. Yi
- Department of Molecular and Cellular Physiology, LSU Health, 1501 Kings Hwy, Shreveport, LA 71130 USA
| | - L. Schrott
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health, 1501 Kings Hwy, Shreveport, LA 71130 USA
| | | | - J. S. Alexander
- Department of Molecular and Cellular Physiology, LSU Health, 1501 Kings Hwy, Shreveport, LA 71130 USA
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Yi P, Aldahan A, Hansen V, Possnert G, Hou XL. Iodine isotopes (129I and 127I) in the Baltic Proper, Kattegat, and Skagerrak basins. Environ Sci Technol 2011; 45:903-909. [PMID: 21190361 DOI: 10.1021/es102837p] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Radioactive anthropogenic pollution has raised concerns about the present and future environmental status of the semienclosed Baltic Sea. We here study the distribution and inventory of the anthropogenic radioactive (129)I in water depth profiles collected from 16 sites in August 2006 and 19 sites in April 2007 in the Baltic Proper and related Kattegat and Skagerrak basins. The results reveal considerable differences of (129)I concentration in terms of spatial and temporal variability and expose relatively high concentrations in the deep waters. Variability in the concentration of (127)I, stable natural isotope of iodine, seems to follow changes in the seawater salinity, but in oxygen-poor bottom waters sediment diagenetic release may contribute to the concentration of both isotopes in the water body. Inventory estimates show that (129)I in August 2006 (24.2 ± 15.4 kg) is higher than that in April 2007 (14.4 ± 8.3 kg) within the southern and central Baltic Proper whereas almost a constant load occurs in the Kattegat Basin. Calculated model inventory shows correspondence to empirical data and provides a guideline for future environmental assessment on the impact of (129)I load in the studied region.
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Affiliation(s)
- P Yi
- Department of Earth Sciences, Uppsala University, Uppsala, Sweden.
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Ai S, Tianchang L, Ningli W, Yuanbo L, Yi P. e0275 Better criterion screening for left ventricular hypertrophy by electrocardiagram with different purposes. Heart 2010. [DOI: 10.1136/hrt.2010.208967.275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yu L, Chen M, Zhao D, Yi P, Lu L, Han J, Zheng X, Zhou Y, Li L. The H19 gene imprinting in normal pregnancy and pre-eclampsia. Placenta 2009; 30:443-7. [PMID: 19342096 DOI: 10.1016/j.placenta.2009.02.011] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2008] [Revised: 02/25/2009] [Accepted: 02/26/2009] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To characterize the H19 gene imprinting in the placental tissues of normal pregnancy and pre-eclampsia. METHODS A total of 188 subjects at 5-9 weeks, 54 at 10-12 weeks, 50 at the second trimester, 65 at term of gestation, and 30 with pre-eclampsia at the third trimester were recruited. Their DNA and RNA were extracted from the placental tissues. The H19 genotypes for individuals were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and the H19 gene imprinting was identified by reverse transcription-PCR (RT-PCR) and the RsaI-based RFLP. The levels of H19 RNA transcripts in the pre-eclampsia patients with the H19 heterozygote were measured by quantitative RT-PCR. The frequency of the H19 heterozygote, the H19 imprinting status among different trimesters of pregnancy and the clinical symptoms in the pre-eclampsia patients were analyzed. RESULTS (1) About 40-46% of subjects at varying stages of normal pregnancy showed the H19 heterozygote, and 24 out of 87 (27.59%) heterozygous cases were at 5-9 weeks of gestation, but no single one in other stages displayed biallelic expression of the H19 gene. (2) Thirteen out of 30 pre-eclampsia patients were H19 heterozygous and six of these showed the biallelic expression of the H19 gene (loss of imprinting). (3) The pre-eclampsia patients with the biallelic expression of H19 tended to have severer hypertension although their H19 RNA transcription level was similar to that in those with monoallelic expression. CONCLUSIONS (1) The biallelic expression of the H19 gene exists in some cases at the early stage of normal pregnancy and changes into monoallelic expression near 10 weeks of gestation. The dynamic alternations in the patterns of the H19 gene imprinting may regulate the maintenance of normal pregnancy. (2) The loss of the H19 gene imprinting in the placental tissues of pre-eclampsia patients may be associated with severe hypertension, contributing to the pathogenic process of pre-eclampsia.
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Affiliation(s)
- L Yu
- Department of Obstetrics and Gynecology, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, PR China
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Sáenz P, Cerdá M, Díaz JL, Yi P, Gorba M, Boronat N, Barreto P, Vento M. Psychological stress of parents of preterm infants enrolled in an early discharge programme from the neonatal intensive care unit: a prospective randomised trial. Arch Dis Child Fetal Neonatal Ed 2009; 94:F98-F104. [PMID: 18635681 DOI: 10.1136/adc.2007.135921] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Psychological stress of parents of preterm infants is aggravated by prolonged hospitalisation. Early discharge programmes (EDPs) have been implemented to alleviate this situation. OBJECTIVE To evaluate parental psychological stress in an EDP for the first 3 months after neonatal intensive care unit (NICU) discharge. DESIGN/METHODS Prospective randomised trial comparing parents of preterm infants assigned to EDP (n = 72) or standard discharge programme (SDP) (standard discharge) (n = 68). At discharge, parents were evaluated using the Hospital Anxiety and Depression Scale (HAD), and the Likert Scale for well-being every 10 days for 3 months. Parental narrative of Worrying and Helping issues was assessed using a semi-structured interview. RESULTS Length of stay was greater in the SDP group (p<0.01). HAD showed no differences in anxiety, but SDP mothers scored higher in depression (p<0.05). Altogether, parents reported a worrisome emotional condition (EDP 87.2%; SDP 80%), which decreased at the end of the study (EDP 45.2%; SDP 34.5%). Their baby's physical well-being was the most relevant issue in the narrative for Worrying and Helping issues at discharge (EDP 69.2%; SDP 67.5%); however, it decreased at the end of the study (EDP 22.6%; SDP 24.1%). At discharge, the paediatrician's support was more for the SDP group. No differences on the Well-Being Scale were found, but the EDP group always scored better. CONCLUSIONS Vulnerability of parents enrolled in an EDP did not increase after hospital discharge. Physical well-being of the baby was the most important issue for both groups. EDP parents requested less paediatric support and scored higher in the Well-being verbatim.
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Affiliation(s)
- P Sáenz
- Neonatal Research Unit, Servicio de Neonatología, Hospital Universitario Materno Infantil La Fe, Avenida de Campanar 21, Valencia, Spain
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Lindegardh N, Hanpithakpong W, Kamanikom B, Singhasivanon P, Socheat D, Yi P, Dondorp AM, McGready R, Nosten F, White NJ, Day NPJ. Major pitfalls in the measurement of artemisinin derivatives in plasma in clinical studies. J Chromatogr B Analyt Technol Biomed Life Sci 2008; 876:54-60. [PMID: 18980865 DOI: 10.1016/j.jchromb.2008.10.021] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2008] [Revised: 09/20/2008] [Accepted: 10/07/2008] [Indexed: 11/26/2022]
Abstract
A bioanalytical method for the analysis of artesunate (ARS) and its metabolite dihydroartemisinin (DHA) in human plasma using protein precipitation and liquid chromatography coupled to positive tandem mass spectroscopy was developed. The method was validated according to published US FDA-guidelines and showed excellent performance. However, when it was applied to clinical pharmacokinetic studies in malaria, variable degradation of the artemisinins introduced an unacceptable large source of error, rendering the assay useless. Haemolytic products related to sample collection and malaria infection degraded the compounds. Addition of organic solvents during sample processing and even low volume addition of the internal standard in an organic solvent caused degradation. A solid phase extraction method avoiding organic solvents eliminated problems arising from haemolysis induced degradation. Plasma esterases mediated only approximately 20% of ex vivo hydrolysis of ARS into DHA. There are multiple sources of major preventable error in measuring ARS and DHA in plasma samples from clinical trials. These various pitfalls have undoubtedly contributed to the large inter-subject variation in plasma concentration profiles and derived pharmacokinetic parameters for these important antimalarial drugs.
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Affiliation(s)
- N Lindegardh
- Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand.
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Kuo F, Gillespie TA, Kulanthaivel P, Lantz RJ, Ma TW, Nelson DL, Threlkeld PG, Wheeler WJ, Yi P, Zmijewski M. Synthesis and biological activity of some known and putative duloxetine metabolites. Bioorg Med Chem Lett 2005; 14:3481-6. [PMID: 15177457 DOI: 10.1016/j.bmcl.2004.04.066] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2004] [Accepted: 04/19/2004] [Indexed: 10/26/2022]
Abstract
Several putative phase I duloxetine metabolites, 4-hydroxy-, 5-hydroxy-, 6-hydroxy-, 5-hydroxy-6-methoxy-, 6-hydroxy-5-methoxy-, 5,6-dihydroxy-, and 4,6-dihydroxyduloxetine were synthesized, and their phase II metabolite as glucuronide or sulfate conjugates were also synthesized. Their in vitro binding activities were compared to that of parent compound duloxetine.
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Affiliation(s)
- F Kuo
- Lilly Research Laboratories, A Division of Eli Lilly and Company, Lilly Corporate Center, Indianapolis, IN 46285 USA.
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Kuo F, Gillespie T, Kulanthaivel P, Lantz R, Ma T, Nelson D, Threlkeld P, Wheeler W, Yi P, Zmijewski M. Corrigendum to “Synthesis and biological activity of some known and putative duloxetine metabolites”. Bioorg Med Chem Lett 2004. [DOI: 10.1016/j.bmcl.2004.07.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Yi P. The Effects of Estrogen-Responsive Element- and Ligand-Induced Structural Changes on the Recruitment of Cofactors and Transcriptional Responses by ER and ER. Mol Endocrinol 2002. [DOI: 10.1210/me.16.4.674] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Al-Gazali LI, Padmanabhan R, Melnyk S, Yi P, Pogribny IP, Pogribna M, Bakir M, Hamid ZA, Abdulrazzaq Y, Dawodu A, James SJ. Abnormal folate metabolism and genetic polymorphism of the folate pathway in a child with Down syndrome and neural tube defect. Am J Med Genet 2001; 103:128-32. [PMID: 11568918 DOI: 10.1002/ajmg.1509] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The association of neural tube defects (NTDs) with Down syndrome (trisomy 21) and altered folate metabolism in both mother and affected offspring provide a unique opportunity for insight into the etiologic role of folate deficiency in these congenital anomalies. We describe here the case of a male child with trisomy 21, cervical meningomyelocele, agenesis of corpus callosum, hydrocephaly, cerebellar herniation into the foramen magnum, and shallow posterior cranial fossa. Molecular analysis of the methylenetetrahydrofolate (MTHFR) gene revealed homozygosity for the mutant 677C-->T polymorphism in both the mother and child. The plasma homocysteine of the mother was highly elevated at 25.0 micromol/L and was associated with a low methionine level of 22.1 micromol/L. Her S-adenosylhomocysteine (SAH) level was three times that of reference normal women, resulting in a markedly reduced ratio of S-adenosylmethionine (SAM) to SAH and significant DNA hypomethylation in lymphocytes. The child had low plasma levels of both homocysteine and methionine and a reduced SAM/SAH ratio that was also associated with lymphocyte DNA hypomethylation. In addition, the child had a five-fold increase in cystathionine level relative to normal children, consistent with over-expression of the cystathionine beta synthase gene present on chromosome 21. We suggest that altered folate status plus homozygous mutation in the MTHFR gene in the mother could promote chromosomal instability and meiotic non-disjunction resulting in trisomy 21. Altered folate status and homozygous TT mutation in the MTHFR gene in both mother and child would be expected to increase the risk of neural tube defects. The presence of both trisomy 21 and postclosure NTD in the same child supports the need for an extended periconceptional period of maternal folate supplementation to achieve greater preventive effects for both NTD and trisomy 21.
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Affiliation(s)
- L I Al-Gazali
- Department of Paediatrics, Faculty of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates.
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Tan X, Wang F, Bi Y, Su Y, Li Y, He J, Yi P, Yan J, de Bacquer D, Braeckman L, Vanhoorne M. The cross-sectional study of the health effects of occupational exposure to carbon disulfide in a Chinese viscose plant. Environ Toxicol 2001; 16:377-382. [PMID: 11594023 DOI: 10.1002/tox.1046] [Citation(s) in RCA: 5] [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: 05/23/2023]
Abstract
This article presents results of carbon disulfide exposure assessment in a Chinese viscose rayon factory and represents the cross-sectional study beginning phase of the occupational epidemiological project. The authors measured external exposure levels to carbon disulfide at a Chinese viscose rayon factory and monitored results as internal exposure indexes by testing urine samples of workers exposed to carbon disulfide levels. The rate at which carbon disulfide is metabolized by exposed subjects was demonstrated by 2-thio-thiazolidine-4-carboxylic acid (TTCA) concentrations in urine of exposed subjects, which was studied to determine best time points for internal exposure sampling. Carbon disulfide concentrations in the air of the workplace were analyzed with gas chromatography with flame photometric detector (GC-FPD); presence of TTCA in urine samples of subjects was determined using a modified high-performance liquid chromatography method. Kinetics of TTCA excretion was studied by analysis at different time points during and after exposure of workers to carbon disulfide. A total of 155 personal samples were obtained. Carbon disulfide concentration at staple viscose hall was found to be 13.72 +/- 1.12 mg/m3 in terms of geometric mean and geometric standard deviation. Carbon disulfide concentration at filament spinning hall was found to be 20.05 +/- 1.33 mg/m3. TTCA values of subjects at staple spinning hall were 1.18 +/- 0.43 and 1.07 +/- 0.38 mg/g creatinine for subjects working at filament spinning hall. The best time for TTCA sampling is at the end of the exposure-working shift.
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Affiliation(s)
- X Tan
- Department of Public Health, Faculty of Medicine, Wuhan University, DongHu Road 185, Wuhan, 430071, People's Republic of China.
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