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Wang L, Bari MW, Shaheen S, Zhong K. Impostor leader and knowledge hiding: Attachment avoidance as underlying mechanism. Acta Psychol (Amst) 2024; 244:104188. [PMID: 38368783 DOI: 10.1016/j.actpsy.2024.104188] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 02/10/2024] [Accepted: 02/12/2024] [Indexed: 02/20/2024] Open
Abstract
Impostorism and knowledge-hiding behaviors negatively impact employees and organizational performance. This study examines the association between impostor leaders and knowledge hiding (evasive hiding, playing dumb, and rationalized hiding). Attachment avoidance is discussed as a mediator between impostor leaders and knowledge-hiding. For quantitative analyses, this study collected the data from 429 individuals with two time lags by sharing the survey instrument link on different organizations' randomly selected official media pages. After obtaining approval from the administrators of these pages, leaders and subordinates from these organizations were asked to participate in the study. The partial least squares structural equation modeling method is employed with Smartpls-4 software for data analyses. The findings indicate that impostor leaders promote knowledge hiding in subordinates. However, impostor leaders highly promote rationalized hiding behavior in subordinates. Attachment avoidance mediates the relationship between the impostor leader and knowledge-hiding behaviors. However, the highest mediation relationship exists between an impostor leader and playing dumb behavior in subordinates. This study strengthens the generalizability of the social exchange theory. The implications mentioned in this study are beneficial in understanding and dealing with the Impostorism and knowledge-hiding phenomena.
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Affiliation(s)
- Laibin Wang
- School of Business, Chizhou University, Chizhou, China; Center for International Education, Philippines Christian University, Manila, Philippines.
| | | | - Sadia Shaheen
- Lyallpur Business School, Government College University Faisalabad, Pakistan.
| | - Kaiyang Zhong
- College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou, China.
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2
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Zhong K, Zhang MM, Zhu ZX, Liao X, Zhang BF, Cheng ML. [Role of mitochondrial autophagy and the curative effect of rehmannia glutinosa leaves total glycoside capsules on nucleos(t)ide drug-induced renal injury]. Zhonghua Gan Zang Bing Za Zhi 2024; 32:125-132. [PMID: 38514261 DOI: 10.3760/cma.j.cn501113-20231128-00243] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Objective: To study the curative effect of rehmannia glutinosa leaves total glycoside capsules and the role of mitochondrial autophagy on nucleos(t)ide drug-induced renal injury. Methods: Adefovir dipivoxil (ADV) was used to construct a hepatitis B virus (HBV) transgenic mouse model for renal injury. Renal function was measured in each group at one and two weeks of modeling. Mitochondrial autophagy indicators were measured at two weeks of modeling in renal tissue. Transmission electron microscopy was used to detect mitochondrial autophagy phenomena in renal tissue. The model was established for two weeks. Mouse with renal injury were treated with rehmannia glutinosa leaves total glycoside capsules or isotonic saline for eight weeks by intragastric administration. Renal function was measured. Renal tissue morphology was observed. Mitochondrial autophagy indicators were detected in renal tissue. The protective effect of different concentrations of verbascoside (the main active ingredient of rehmannia glutinosa capsule) was observed on HK-2 cell damage induced by ADV. HK-2 cells were divided into control, ADV, and ADV plus verbascoside groups. The effects of verbascoside at different times and concentrations were observed on the HK-2 mitochondrial autophagy indicators. Fifty patients with chronic hepatitis B were collected who presented with renal injury after treatment with nucleos(t)ide analogs. The random number method was used to divide 29 cases into a control group that received conventional treatment. The treatment group of 21 cases was treated with rehmannia glutinosa leaves total glycoside capsules on the basis of the control group. Serum creatinine (Scr) and urinary protein were detected at eight weeks.The χ(2) test or t-test was used for statistical analysis. Results: Compared with the control group, two weeks of modeling in the ADV group induced renal function injury in HBV mice. The expression of autophagy indicators was higher in the renal tissue of the ADV group than that of the control group. Transmission electron microscopy had revealed mitochondrial autophagy in the renal tissue of the ADV group. Compared with the control group, the renal function of HBV mice treated with rehmannia glutinosa leaves total glycoside capsules improved for two months, and the expressions of autophagy indicators were down-regulated.Verbascoside promoted proliferation in ADV-damaged HK-2 cells, and the expression of autophagy indicators was down-regulated compared with the ADV alone group. In 50 patients with renal function injury, the urinary protein improvement was significantly superior in the treatment group than that in the control group, with eighteen and three cases being effective and ineffective in the treatment group and 12 and 17 cases being effective and ineffective in the control group, with a statistically significant difference (χ(2) = 9.975 0, P = 0.001 6). Serum creatinine was decreased in the treatment group compared with the control group, with 11 and 10 cases being effective and ineffective in the treatment group and 12 and 17 cases being effective and ineffective in the control group, with no statistically significant difference (χ(2) = 0.593 5, P = 0.441 1). Conclusion: Rehmannia glutinosa leaves total glycoside capsule can improve the nucleos(t)ide drug-induced renal function injury in chronic hepatitis B, possibly playing a role via inhibiting PINK1/Parkin-mediated mitochondrial autophagy.
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Affiliation(s)
- K Zhong
- Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - M M Zhang
- Department of Gastroenterology, Gui Yang Public Health Clinical Center, Guiyang 550004, China
| | - Z X Zhu
- Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - X Liao
- Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - B F Zhang
- Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - M L Cheng
- Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
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Fu Z, Zhou Y, Li W, Zhong K. Impact of digital finance on energy efficiency: empirical findings from China. Environ Sci Pollut Res Int 2023; 30:2813-2835. [PMID: 35939189 PMCID: PMC9358071 DOI: 10.1007/s11356-022-22320-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
The world is facing the problem of resource scarcity and environmental degradation. Improving energy efficiency is an effective way to reduce energy consumption and reduce pollutant emissions. Based on relevant data from 30 Chinese provinces from 2011 to 2019, this paper constructs energy efficiency indicators by establishing a super-efficient three-stage SBM-DEA model. It explores the impact of digital finance on energy efficiency using a systematic generalized moment estimation method and constructs an analytical framework for the impact of digital inclusive finance on energy efficiency from the breadth of coverage, depth of use, and degree of digitization of digital inclusive finance. In addition, this paper examines the differences in the impact of digital inclusive finance on energy efficiency from a sub-regional perspective. Research indicates the following: (1) At the national level, the relationship between digital inclusive finance development and energy efficiency in China shows an inverted "U"-shape; the breadth of digital financial coverage, the use of digital insurance services and digital credit services, and the degree of digitalization of digital finance all have significant effects on energy efficiency. (2) From a regional perspective, the impact of digital inclusive finance on energy efficiency has regional heterogeneity. Based on this finding, first, the government should speed up the construction of digital financial infrastructure to promote the further development of digital finance. Second, the government should take appropriate measures to regulate industry giants. Third, the government should adjust measures to local conditions when formulating policies. The above research has certain implications for improving the targeting of digital finance-related policies and promoting the high-quality development of China's economy.
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Affiliation(s)
- Zitian Fu
- School of Economics, Sichuan Agricultural University, Chengdu, China
| | - Yujiao Zhou
- School of Economics, Southwestern University of Finance and Economics, Chengdu, China
| | - Weifeng Li
- PBC School of Finance, Tsinghua University, Beijing, China
| | - Kaiyang Zhong
- School of Economic Information Engineering, Southwestern University of Finance and Economics, Chengdu, China
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Liu H, Zhong K. Relationship between health spending, life expectancy and renewable energy in China: A new evidence from the VECM approach. Front Public Health 2022; 10:993546. [PMID: 36339134 PMCID: PMC9631790 DOI: 10.3389/fpubh.2022.993546] [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: 07/13/2022] [Accepted: 09/05/2022] [Indexed: 01/26/2023] Open
Abstract
There has been a growing trend in health spending and renewable energy consumption in China over the past few decades, which has positive implications for health outcomes, such as life expectancy. Therefore, the main objective of this study is to empirically analyze the impact of health expenditures and renewable energy on life expectancy in China. We used the time series data from 2000Q1 to 2020Q4 and applied the VECM approach for the data analysis. The results of this study suggest a long run association between health spending, life expectancy and renewable energy. The increase in health spending improves life expectancy, while renewable energy consumption also positively affects life expectancy in China. Therefore, the government should allocate sufficient funding to the health sector in order to attain higher life expectancy in the country. In addition, the government should also provide incentives for the consumption and production of renewable energy, which could help to achieve the sustainable development goal and life expectancy.
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Affiliation(s)
- Hui Liu
- School of Finance and Taxation, Shandong University of Finance and Economics, Jinan, China,*Correspondence: Hui Liu
| | - Kaiyang Zhong
- School of Economics and Management, Binzhou University, Binzhou, China,School of Economic Information Engineering, Southwestern University of Finance and Economics, Chengdu, China,Kaiyang Zhong
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Ren Z, Fu Z, Zhong K. The influence of social capital on farmers’ green control technology adoption behavior. Front Psychol 2022; 13:1001442. [PMID: 36300048 PMCID: PMC9588932 DOI: 10.3389/fpsyg.2022.1001442] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 09/20/2022] [Indexed: 11/22/2022] Open
Abstract
Relying on social capital to promote farmers’ adoption of green control technology is of great significance for the governance of rural environment and the realization of sustainable agricultural development. Based on the survey data of 754 farmers in Shandong Province, this paper uses the Probit model and the instrumental variable method to empirically analyze the impact of social capital on farmers’ green control technology adoption behavior. The results show that: social capital has a promoting influence on farmers’ green control technology adoption behavior; the influence of the three dimensions of social capital on farmers’ green control technology adoption behavior is in turn social norms, social networks, and social trust; social networks play an enhanced moderating role in the process of social trust and social norms promoting farmers’ green control technology adoption behavior; education level, the number of family labor force and annual family income level have a significant positive impact on farmers’ green control technology adoption behavior, while age has a significant negative impact. Therefore, the government should make full use of social capital to promote farmers to adopt green control technology.
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Affiliation(s)
- Zhong Ren
- Business School, Shandong Normal University, Jinan, China
| | - Zitian Fu
- School of Economics, Sichuan Agricultural University, Chengdu, China
- *Correspondence: Zitian Fu,
| | - Kaiyang Zhong
- School of Economic Information Engineering, Southwestern University of Finance and Economics, Chengdu, China
- Kaiyang Zhong,
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6
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Zhou J, Yuan Y, Fu Z, Zhong K. The impact of public health events on green economy efficiency in the context of environmental regulation. Front Public Health 2022; 10:996139. [PMID: 36249192 PMCID: PMC9561134 DOI: 10.3389/fpubh.2022.996139] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 09/05/2022] [Indexed: 01/26/2023] Open
Abstract
Public health crises have become one of the greatest threats to sustainable global economic development. It is therefore important to explore the impact of public health events on green economic efficiency. However, few studies have specifically examined the relationship between public health security and green economic efficiency. Based on the relevant data of 30 Chinese provinces from 2011 to 2019, this paper explores the impact of public health on green economic efficiency by establishing a four-stage SBM-DEA model to construct green economic efficiency indicators and using a panel model. A moderating effect model is established to explore the moderating effect of environmental regulation on the impact of public health on green economic efficiency. In addition, this paper examines the heterogeneity of public health impact on green economic efficiency in terms of geographic location, carbon pilot, and transportation level. It is found that, first, public health events have a significant hindering effect on green economic efficiency. Second, environmental regulation has a significant moderating effect on the impact of public health events on green economic efficiency. Third, the impact of public health events on green economic efficiency changes from hindering to facilitating as the intensity of environmental regulation increases. Fourth, the impact of public health events on green economic efficiency is heterogeneous in terms of geographic location, carbon pilot, and transportation level. The above studies have implications for how to balance economic development and environmental protection in case of a public safety event.
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Affiliation(s)
- Jingnan Zhou
- China Center for Special Economic Zone Research, Shenzhen University, Shenzhen, China
| | - Yiming Yuan
- China Center for Special Economic Zone Research, Shenzhen University, Shenzhen, China
| | - Zitian Fu
- School of Economics, Sichuan Agricultural University, Chengdu, China
| | - Kaiyang Zhong
- School of Economic Information Engineering Southwestern University of Finance and Economics, Chengdu, China
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7
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Pei J, Zhong K, Yu Z, Wang L, Lakshmanna K. Scene graph semantic inference for image and text matching. ACM T ASIAN LOW-RESO 2022. [DOI: 10.1145/3563390] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
With the rapid development of information technology, image and text data have increased dramatically. Image and text matching techniques enable computers to understand information from both visual and text modalities and match them based on semantic content. Existing methods focus on visual and textual object co-occurrence statistics and learning coarse-level associations. However, the lack of intramodal semantic inference leads to the failure of fine-level association between modalities. Scene graphs can capture the interactions between visual and textual objects and model intramodal semantic associations, which are crucial for the understanding of scenes contained in images and text. In this paper, we propose a novel scene graph semantic inference network (SGSIN) for image and text matching that effectively learns fine-level semantic information in vision and text to facilitate bridging cross-modal discrepancies. Specifically, we design two matching modules and construct scene graphs within each matching module for aggregating neighborhood information to refine the semantic representation of each object and achieve fine-level alignment of visual and textual modalities. We perform extended experiments in Flickr30k and MSCOCO and achieve state-of-the-art results, which validate the advantages of our proposed approach.
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Affiliation(s)
- Jiaming Pei
- School of Computer Science, University of Sydney, Australia
| | - Kaiyang Zhong
- School of Computing and Artificial Intelligence, Southwestern University of Finance and Economics, China
| | - Zhi Yu
- School of Microelectronics and Communication Engineering, Chongqing University, China
| | - Lukun Wang
- (Corresponding author) College of Intelligent equipment, Shandong University of Science and Technology, China
| | - Kuruva Lakshmanna
- School of Information Technology and Engineering, Vellore Institute of Technology, India
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8
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Ren Z, Zhong K. Driving mechanism of subjective cognition on farmers’ adoption behavior of straw returning technology: Evidence from rice and wheat producing provinces in China. Front Psychol 2022; 13:922889. [PMID: 35983208 PMCID: PMC9379131 DOI: 10.3389/fpsyg.2022.922889] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 07/12/2022] [Indexed: 11/26/2022] Open
Abstract
Straw burning is one of the important causes of environmental pollution in rural China. As an important green production technology, straw returning is beneficial to the improvement of rural environment and the sustainable development of agriculture. Based on the improved planned behavior theory, taking the survey data of 788 farmers in Shandong, Henan, Hubei, and Hunan provinces as samples, this paper uses a multi-group structural equation model to explore the driving mechanism of subjective cognition on the adoption behavior of farmers’ straw returning technology. The results show that behavioral attitude, subjective norm, and perceived behavioral control, which represent subjective cognition, all have significant driving effects on farmers’ intention to adopt straw returning technology. Behavioral intention plays a mediating role in the process of subjective cognition driving farmers’ adoption behavior of straw returning technology. Government support has a moderating role in the path from farmers’ behavioral intention to behavioral response. The subjective cognition of different types of farmers has a significant driving effect on the adoption intention of straw returning technology, but the driving strength weakens with the increase of the degree of farmers’ concurrent occupation. This study provides guidance for improving the government’s straw returning policy and regulating straw returning behavior.
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Affiliation(s)
- Zhong Ren
- Business School, Shandong Normal University, Jinan, China
| | - Kaiyang Zhong
- School of Economic Information Engineering, Southwestern University of Finance and Economics, Chengdu, China
- *Correspondence: Kaiyang Zhong,
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9
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Wang D, Abula B, Jizuo A, Si J, Zhong K, Zhou Y. Agricultural Openness and the Risk of COVID-19 Incidence: Evidence from China. Int J Environ Res Public Health 2022; 19:ijerph19063517. [PMID: 35329202 PMCID: PMC8954341 DOI: 10.3390/ijerph19063517] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 03/11/2022] [Accepted: 03/15/2022] [Indexed: 12/04/2022]
Abstract
At present, there are large number of articles on the impact of COVID-19, but there are only a few articles on the impact of COVID-19 and international agriculture. Agriculture product is different from other industrial products. If domestic food cannot be self-sufficient, it must be resolved through imports. This will inevitably face the dilemma between the opening up agriculture and the risk of importing COVID-19. This paper pioneered the use of entropy method, TOPSIS method and grey correlation analysis to predict the correlation between agricultural opening to the outside world and the input and spread of COVID-19. We use the correlation matrix quantifying the number of confirmed COVID-19 cases and agricultural openness to deduce that there is a significant positive correlation between the flow of agricultural products caused by China’s agricultural opening-up and the spread of COVID-19, and use the proposed matrix to predict the spread risk of COVID-19 in China. The results of the empirical analysis can provide strong evidence for decision-makers to balance the risk of COVID-19 transmission with the opening of agricultural markets, and they can take this evidence into full consideration to formulate reasonable policies. This has great implications both for preventing the spread of COVID-19 and for agricultural opening-up.
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Affiliation(s)
- Dezhen Wang
- College of Economics and Management, Xinjiang Agricultural University, Urumqi 830052, China;
- Business School, Yulin Normal University, Yulin 537000, China
| | - Buwajian Abula
- College of Economics and Management, Xinjiang Agricultural University, Urumqi 830052, China;
- Correspondence: (B.A.); (Y.Z.)
| | - Aniu Jizuo
- School of Public Policy & Management, Tsinghua University, Beijing 100084, China;
| | - Jianhua Si
- School of International Studies, Renmin University, Beijing 100872, China;
| | - Kaiyang Zhong
- School of Economic Information Engineering, Southwestern University of Finance and Economics, Chengdu 611130, China;
| | - Yujiao Zhou
- School of Economics, Southwestern University of Finance and Economics, Chengdu 611130, China
- Correspondence: (B.A.); (Y.Z.)
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10
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Abstract
In recent years, digital finance has become a crucial part of the financial system and reshaped the mode of green finance in China. Digital finance has brought certain impact on economic growth, industrial structure, and resident income, which may affect pollution. The nexus of digital finance and environment in China is thus worth exploring. By revising the traditional Environmental Kuznets Curve model with income inequality variable, this paper decomposes the environmental effects of economic activities into income growth effect, industrial structure effect and income inequality effect, and use panel data of China’s provinces to conduct an empirical analysis. The results reveal the following: (1) the Environmental Kuznets Curve is still valid in sample, and digital finance can reduce air and water pollution (as measured through SO2 and COD emission) directly; (2) in the influence mechanism, digital finance can alleviate income inequality and promote green industrial structure, thus reducing pollution indirectly, but the scale effect of income growth outweighs the technological effect, which increases pollution indirectly; and (3) digital finance has a threshold effect on improving the environment, then an acceleration effect appears after a certain threshold value. From the regional perspective, digital finance development in eastern regions is generally ahead of central and western regions, and the effects of environmental improvement in the eastern regions are greater. According to the study, this paper suggest that digital finance can be an effective way to promote social sustainability by alleviating income inequality and environmental sustainability by reducing pollution.
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Affiliation(s)
- Kaiyang Zhong
- School of Economic Information Engineering, Southwestern University of Finance and Economics, Chengdu, China
- * E-mail:
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11
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Ji Y, Xue J, Zhong K. Does Environmental Regulation Promote Industrial Green Technology Progress? Empirical Evidence from China with a Heterogeneity Analysis. Int J Environ Res Public Health 2022; 19:ijerph19010484. [PMID: 35010743 PMCID: PMC8744565 DOI: 10.3390/ijerph19010484] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/27/2021] [Accepted: 12/29/2021] [Indexed: 11/16/2022]
Abstract
The complex relationship between environmental regulation and green technology progress has always been a hot topic of research, especially in developing countries, where the impact of environmental regulation is important. Current research is mainly concerned with the impact of the single environmental regulation on technological progress and lacks study on the diversity of environmental regulations. The main purpose of this paper is to examine the heterogeneity of the effects of different types of environmental regulation on industrial green technology progress. As China's scale of economy and pollution emissions are both large, and the government has also made great efforts in environmental regulation, this paper takes China as the example for analyses. We first use the EBM-GML method to measure the industrial green technology progress of 30 provinces in China from 2000 to 2018, and then apply the panel econometric model and threshold model to empirically investigate the influence of 3 types of environmental regulation. The results show that, first, the impacts of environmental regulation on industrial green technology progress are significantly different; specifically, command-based regulation has no direct significant impact, and autonomous regulation has played a positive role, and market-based regulation's quadratic curve effect is significant, in which the cost-based and investment-based tool presents an inverted U-sharped and U-sharped, respectively. Second, there may be a weak alternative interaction among different types of environmental regulation. Third, a market-based regulatory tool has a threshold effect; with the upgrading of environmental regulation compliance, the effect of a cost-based tool is characterized by "promotion inhibition", and that of an investment-based tool is "inhibition promotion". Finally, the results of regional analysis are basically consistent with those of the national analysis. Based on the study, policy enlightenment is put forward to improve regional industrial green technology progress from the perspective of environmental regulation. This paper can provide a useful analytical framework for studying the relationship between environmental regulation and technological progress in a country, especially in developing countries.
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Affiliation(s)
- Yanli Ji
- School of Mathematics and Statistics, Changshu Institute of Technology, Changshu 215500, China;
| | - Jie Xue
- School of Economics, Hangzhou Dianzi University, Hangzhou 310018, China;
| | - Kaiyang Zhong
- School of Economic Information Engineering, Southwestern University of Finance and Economics, Chengdu 611130, China
- Correspondence:
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12
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13
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Liao H, Wang Y, Xu X, Zhou C, Zhang J, Zhong K, Yang D. [Antitumor effects of AZD2014, a dual mTORC1/2 inhibitor, against human hepatocellular carcinoma xenograft in nude mice]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:1056-1061. [PMID: 34308856 DOI: 10.12122/j.issn.1673-4254.2021.07.13] [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: 11/24/2022]
Abstract
OBJECTIVE To investigate the antitumor effects of AZD2014 (a dual mTORC1/2 inhibitor) against human hepatocellular carcinoma (HCC) xenograft in mice. METHODS HCCLM3 cells were injected subcutaneously in the right flank of nude mice, and when the tumors were macroscopic, the mice were randomized into 2 groups for daily intraperitoneal injection of AZD2014 (5 mg/kg, n=5) or vehicle (5 mL/kg, n=5) for 24 days. Tumor growth was assessed using calipers every 4 days and the tumor growth curve was drawn. After the final injection, the mice were euthanized and the tumors were dissected for measuring tumor weight and histopathological analysis with HE staining. Immunohistochemical staining was used to detect the expressions of Ki-67, cleaved caspase-3, CD31, and the epithelial-mesenchymal transition (EMT)-related proteins (Ecadherin, N-cadherin, and vimentin) in the tumor tissue. RESULTS Daily treatment with AZD2014 significantly suppressed HCC growth as compared with the control group. HE staining showed significantly increased tumor necrosis in AZD2014-treated mice. AZD2014 treatment inhibited tumor cell proliferation, angiogenesis and EMT progression as shown by decreased expressions of Ki-67, CD31, N-cadherin, and vimentin and increased expression of E-cadherin in the tumor tissue, and significantly promoted tumor cell apoptosis as shown by an increased expression of cleaved caspase-3 in AZD2014-treated mice. CONCLUSIONS AZD2014 is a highly potent antitumor agent for HCC in nude mice bearing HCC xenografts. AZD2014 can effectively inhibit tumor proliferation, angiogenesis and EMT progression and induce tumor cell necrosis and apoptosis.
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Affiliation(s)
- H Liao
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Y Wang
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - X Xu
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - C Zhou
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - J Zhang
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - K Zhong
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - D Yang
- Department of Hepatobiliary Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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14
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Ni J, Fu C, Huang R, Li Z, Li S, Cao P, Zhong K, Ge M, Gao Y. Metabolic syndrome cannot mask the changes of faecal microbiota compositions caused by primary hepatocellular carcinoma. Lett Appl Microbiol 2021; 73:73-80. [PMID: 33768575 DOI: 10.1111/lam.13477] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 12/24/2020] [Revised: 03/16/2021] [Accepted: 03/22/2021] [Indexed: 12/19/2022]
Abstract
Both hepatocellular carcinoma (HCC) and metabolic syndrome are closely associated with the composition of the gut microbiota (GM). Although it has been proposed that elements of the GM can be used as biomarkers for the early diagnosis of HCC, whether metabolic syndrome results in a misrepresentation of the results of the early diagnosis of HCC using GM remains unclear. We compared the differences in the faecal microbiota of 10 patients with primary HCC, six patients with type 2 diabetes mellitus (T2DM), seven patients with arterial hypertension, six patients with both HCC and T2DM, and 10 patients with both HCC and arterial hypertension, as well as 10 healthy subjects, using high-throughput sequencing of 16S rRNA gene amplicons. Our results revealed a significant difference in the GM between subjects with and without HCC. The 49 bacterial genera out of the 494 detected genera were significantly different between the groups. These results show that changes in the GM can be used to distinguish between subjects with and without HCC, and can resist interference of T2DM and arterial hypertension with the GM. The results of the present study provide an important basis for the clinical auxiliary diagnosis of HCC by detecting the GM.
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Affiliation(s)
- J Ni
- Research and Development Center, Guangdong Meilikang Bio-Sciences Ltd., Dongguan, China.,Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center of Artificial Organ and Tissue Engineering, Zhujiang Hospital of Southern Medical University, Guangzhou, China.,Dongguan Key Laboratory of Medical Bioactive Molecular Developmental and Translational Research, Guangdong Medical University, Dongguan, China
| | - C Fu
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center of Artificial Organ and Tissue Engineering, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - R Huang
- Department of Neonatal Surgery, Guangdong Women and Children Hospital, Guangzhou, China
| | - Z Li
- Research and Development Center, Guangdong Meilikang Bio-Sciences Ltd., Dongguan, China
| | - S Li
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center of Artificial Organ and Tissue Engineering, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - P Cao
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center of Artificial Organ and Tissue Engineering, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - K Zhong
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center of Artificial Organ and Tissue Engineering, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - M Ge
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center of Artificial Organ and Tissue Engineering, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - Y Gao
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center of Artificial Organ and Tissue Engineering, Zhujiang Hospital of Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China
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15
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Ye YY, Zhao HJ, Fei Y, Wang W, He FL, Zhong K, Yuan S, Wang ZG. Critical values in hematology of 862 institutions in China. Int J Lab Hematol 2017; 39:513-520. [PMID: 28497543 DOI: 10.1111/ijlh.12681] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 03/07/2017] [Indexed: 11/29/2022]
Abstract
INTRODUCTION A national survey on critical values in hematology of China laboratories was conducted to determine the current practice and assess the quality indicators so as to obtain a quality improvement. METHODS Laboratories participating were asked to submit the general information, the practice of critical value reporting, and the status of timeliness of critical value reporting. RESULTS A total of 862 laboratories submitted the results. The majority of participants have included white blood cell count, blood platelet count, hemoglobin, prothrombin time, and activated partial thromboplastin time in their critical value lists. Many sources are used for establishing a critical value policy, and some of the laboratories consult with clinicians. The unreported critical value rate, late critical value reporting rate, and clinically unacknowledged rate in China are relatively low, and the median of critical value reporting time is 8-9 minutes. CONCLUSION There exists a wide variety for critical value reporting in hematology in China. Laboratories should establish a policy of critical value reporting suited for their own situations and consult with clinicians to set critical value lists. Critical values are generally reported in a timely manner in China, but some measures should be taken to further improve the timeliness of critical value reporting.
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Affiliation(s)
- Y Y Ye
- National Center for Clinical Laboratories/Beijing Engineering Research Center of Laboratory Medicine, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - H J Zhao
- National Center for Clinical Laboratories/Beijing Engineering Research Center of Laboratory Medicine, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - Y Fei
- National Center for Clinical Laboratories/Beijing Engineering Research Center of Laboratory Medicine, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - W Wang
- National Center for Clinical Laboratories/Beijing Engineering Research Center of Laboratory Medicine, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - F L He
- National Center for Clinical Laboratories/Beijing Engineering Research Center of Laboratory Medicine, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - K Zhong
- National Center for Clinical Laboratories/Beijing Engineering Research Center of Laboratory Medicine, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - S Yuan
- National Center for Clinical Laboratories/Beijing Engineering Research Center of Laboratory Medicine, National Center of Gerontology, Beijing Hospital, Beijing, China
| | - Z G Wang
- National Center for Clinical Laboratories/Beijing Engineering Research Center of Laboratory Medicine, National Center of Gerontology, Beijing Hospital, Beijing, China
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16
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Leutritz T, Hilfert L, Busse U, Smalla K, Speck O, Zhong K. Contribution of iron and protein contents from rat brain subcellular fractions to MR phase imaging. Magn Reson Med 2016; 77:2028-2039. [DOI: 10.1002/mrm.26288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 05/03/2016] [Accepted: 05/04/2016] [Indexed: 12/14/2022]
Affiliation(s)
- T. Leutritz
- Dept. Biomedical Magnetic ResonanceOtto‐von‐Guericke UniversityMagdeburg Germany
| | - L. Hilfert
- Institute for ChemistryOtto‐von‐Guericke UniversityMagdeburg Germany
| | - U. Busse
- Institute of Apparatus and Environmental EngineeringOtto‐von‐Guericke UniversityMagdeburg Germany
| | - K.‐H. Smalla
- Center for Behavioral Brain Sciences Magdeburg
- Leibniz Institute for NeurobiologyMagdeburg Germany
| | - O. Speck
- Dept. Biomedical Magnetic ResonanceOtto‐von‐Guericke UniversityMagdeburg Germany
- Center for Behavioral Brain Sciences Magdeburg
- Leibniz Institute for NeurobiologyMagdeburg Germany
- German Center for Neurodegenerative Disease (DZNE)Site Magdeburg Germany
| | - K. Zhong
- Dept. Biomedical Magnetic ResonanceOtto‐von‐Guericke UniversityMagdeburg Germany
- High Magnetic Field Lab, Chinese Academy of SciencesHefei China
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17
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Zhang P, Guo Z, Zhong K, Li Q, Ouyang J, Chen M, Hu A, Jiao X, Zhu X, He X. Evaluation of Immune Profiles and MicroRNA Expression Profiles in Peripheral Blood Mononuclear Cells of Long-Term Stable Liver Transplant Recipients and Recipients With Acute Rejection Episodes. Transplant Proc 2015; 47:2907-15. [PMID: 26707312 DOI: 10.1016/j.transproceed.2015.10.048] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 10/20/2015] [Indexed: 12/16/2022]
Abstract
OBJECTIVE This study aimed to document the difference of immunophenotypes in peripheral blood mononuclear cells (PBMCs) between long-term stable liver transplant recipients and recipients with acute rejection. We also sought to identify whether there is any correlation between microRNA (miRNA) expression profile and the differential immunoprofile in these 2 groups to establish a specific miRNA biomarker to identify potential liver transplant recipients. METHODS PBMCs were isolated from 53 stable liver transplant recipients (STA group) and 15 liver transplant recipients with repeated biopsy-proven rejection episodes admitted to our hospital. Immunoprofiles were analyzed by means of flow cytometry. Analysis of miRNA expression in the PBMCs was performed by means of real-time polymerase chain reaction. RESULTS The immune profiling analysis showed increased frequency of peripheral natural killer cells and regulatory T cells in stable liver transplant recipients compared with the acute rejection recipients and healthy volunteers (P < .05). There was no significant difference in the immune cell levels (CD19(+) B cells, CD4(+) T cells, and CD8(+) T cells) in PBMCs among the transplant recipient groups and healthy control subjects. Three miRNAs, miR-18b, miR-340, and miR-106b, were up-regulated in the PBMCs of the STA recipients compared with recipients with acute rejection. CONCLUSIONS These results suggest that miR-18b, miR-340, and miR-106b, which regulate the expression of specific immunophenotypes, can be used as potential biomarkers to identify long-term stable liver transplant recipients from recipients with acute rejection.
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Affiliation(s)
- P Zhang
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Z Guo
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - K Zhong
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Q Li
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - J Ouyang
- Department of Surgical Oncology, Sun Yat-sen University, Dongguan, Guangdong, People's Republic of China
| | - M Chen
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - A Hu
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - X Jiao
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - X Zhu
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.
| | - X He
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.
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Abstract
Neuropsychiatric symptoms are common in Alzheimer's disease (AD) and other neurodegenerative disorders. Recent progress has been made with clinical trials, advancing new therapies for psychosis in Parkinson's disease (PD), agitation in AD, and apathy in AD. Definitions have emerged for agitation and apathy in patients with cognitive impairment, facilitating recruitment of clinical trial populations. Progress in clinical trial design and the agents being assessed promise to advance therapies for disabling symptoms and improve quality of life for patients and caregivers.
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Affiliation(s)
- J Cummings
- Cleveland Clinic Lou Ruvo Center for Brain Health, Las Vegas, Nevada, USA
| | - K Zhong
- Cleveland Clinic Lou Ruvo Center for Brain Health, Las Vegas, Nevada, USA
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19
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Lu WF, Cao JJ, Guo YJ, Zhong K, Zha GM, Wang LF, Yang GY. Expression of the porcine lipoic acid synthase (LIAS) gene in Escherichia coli. Genet Mol Res 2014; 13:5369-77. [PMID: 25078593 DOI: 10.4238/2014.july.24.16] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Lipoic acid synthase, which exists primarily in mitochondria, participates in the biosynthesis of intrinsic lipoic acid. The lipoic acid synthase gene in pig is known as LIAS. To further investigate the biological functions of the protein that is encoded by LIAS, we cloned the open read frame of porcine LIAS (GenBank No. JN797612.1) into the expression vector pET-28α(+). The resulting pET-28α(+)-Lias recombinant vector was introduced into the Escherichia coli BL21 (DE3) strain. With induction by isopropyl β-D-1-thiogalactopyranoside, the recombinant E. coli strain can express the target protein that has a molecular weight of 41.58 kDa, which was confirmed by Western blotting.
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Affiliation(s)
- W F Lu
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
| | - J J Cao
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
| | - Y J Guo
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
| | - K Zhong
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
| | - G M Zha
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
| | - L F Wang
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
| | - G Y Yang
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
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Guo YJ, Liu GZ, Wang CM, Wang YY, Li HJ, Zhong K, Lu WF, Wang YL, Yang GY. Molecular cloning and expression of the porcine S14R gene in Escherichia coli. Genet Mol Res 2013; 12:4405-12. [PMID: 24222220 DOI: 10.4238/2013.october.10.6] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We amplified S14R protein gene cDNA of porcine, cloned it into a prokaryotic expression plasmid, and expressed it in Escherichia coli. A pair of primers was designed based on the cDNA sequence of the porcine S14R gene in GenBank. The target gene fragment from porcine liver tissue was amplified by RT-PCR. Confirmed by auto-sequencing, the target gene fragment was subcloned into an expression vector of pET28a. The pET28a-S14R construct was subsequently transformed into E. coli BL21 (DE3). This construct was verified by restriction endonuclease digestion and sequencing. Using isopropyl β-D-1-thiogalactopyranoside induction, a new recombinant protein with the expected relative molecular mass of 24 kDa appeared. The result was identified by SDS-PAGE electrophoresis. Porcine S14R includes 549bp (GenBank No. JN793537), with an open reading frame of 549 bp coding 182 amino acids.
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Affiliation(s)
- Y J Guo
- College of Animal Sciences and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan Province, China
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21
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Naeem A, Zhong K, Moisá SJ, Drackley JK, Moyes KM, Loor JJ. Bioinformatics analysis of microRNA and putative target genes in bovine mammary tissue infected with Streptococcus uberis. J Dairy Sci 2012; 95:6397-408. [PMID: 22959936 DOI: 10.3168/jds.2011-5173] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Accepted: 07/25/2012] [Indexed: 01/23/2023]
Abstract
MicroRNA (miRNA) are small single-stranded noncoding RNA with important roles in regulating innate immunity in nonruminants via transcriptional and posttranscriptional mechanisms. Mastitis causes significant losses in the dairy industry and a wealth of large-scale mRNA expression data from mammary tissue have provided fundamental insights into the tissue adaptations to pathogens. We studied the expression of 14 miRNA (miR-10a, -15b, -16a, -17, -21, -31, -145, -146a, -146b, -155, -181a, -205, -221, and -223) associated with regulation of innate immunity and mammary epithelial cell function in tissue challenged with Streptococcus uberis. Those data, along with microarray expression of 2,102 differentially expressed genes, were used for bioinformatics analysis to uncover putative target genes and the most affected biological pathways and functions. Three miRNA (181a, 16, and 31) were downregulated approximately 3- to 5-fold and miR-223 was upregulated approximately 2.5-fold in infected versus healthy tissue. Among differentially expressed genes due to infection, bioinformatics analysis revealed that the studied miRNA share in the regulation of a large number of metabolic (SCD, CD36, GPAM, and FASN), immune/oxidative stress (TNF, IL6, IL10, SOD2, LYZ, and TLR4), and cellular proliferation/differentiation (FOS and CASP4) target genes. This level of complex regulation was underscored by the coordinate effect revealed by bioinformatics on various cellular pathways within the Kyoto Encyclopedia of Genes and Genomes database. Most pathways associated with "cellular processes," "organismal systems," and "diseases" were activated by putative target genes of miR-31 and miR-16a, with an overlapping activation of "immune system" and "signal transduction." A pronounced effect and activation of miR-31 target genes was observed within "folding, sorting, and degradation," "cell growth and death," and "cell communication" pathways, whereas a marked inhibition of "lipid metabolism" occurred. Putative targets of miR-181a had a strong effect on FcγR-mediated phagocytosis, toll-like receptor signaling, and antigen processing and presentation, which were activated during intramammary infections. The targets of both miR-31 and miR-223 had an inhibitory effect on "lipid metabolism." Overall, the combined analyses indicated that changes in mammary tissue immune, metabolic, and cell growth-related signaling pathways during infection might have been mediated in part through effects of miRNA on gene transcription. Differential expression of miRNA supports the view from nonruminant cells/tissues that certain miRNA might be essential for the tissue's adaptive response to infection.
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Affiliation(s)
- A Naeem
- Mammalian NutriPhysioGenomics, and Department of Animal Sciences, University of Illinois, Urbana 61801, USA
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Marotta F, Chui DH, Yadav H, Lorenzetti A, Celep G, Jain S, Bomba A, Polimeni A, Zhong K, Allegri F. Effective properties of a sturgeon-based bioactive compound on stress-induced hippocampal degeneration and on in vitro neurogenesis. J BIOL REG HOMEOS AG 2012; 26:327-35. [PMID: 23034252 DOI: pmid/23034252] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The aim of this study is to test the activity of a marine bioactive compound containing high-purity caviar-derived DNA, collagen elastin and protein extracts from sturgeon (LD-1227, Caviarlieri, Laboratoires Dom, Switzerland) to exert neuroprotective properties in an experimental setting while also being potential triggers of neurogenesis in a separate in vitro study. Supplementation with high-DHA mixture of LD-1227 was applied for 30 days to stress model rats. Both supplementations significantly mitigated the histological brain damage when analyzing hippocampal subregions and corticosterone level. However, LD-1227 was most significantly efficient in preventing SOD, Catalase and ascorbic acid decrease in brain tissue. Both supplementations stimulated neurogenesis in vitro and neuron markers in particular but og olygodendrocyte markers and glia increased only in LD-1227-enriched medium. Taken together, these data suggest that LD-1227 is able to significantly protect the brain structure redox system to higher degree than DHA. Moreover, from in vitro study it appears that marine bioactive compound, through it wide array of small unsaturated fatty acids, phospholipids and neurotransmitter precursors, is likely to influence neuronal and glial lineage to act differently from a DHA-rich mixture.
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Affiliation(s)
- F Marotta
- ReGenera Research Group for Aging-Intervention, Milano, Italy.
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Li H, Guo Y, Zhu H, Zhong K, Zha G, Wang L, Wang Y, Lu W, Wang Y, Yang G. IL-8 mRNA expression in the mouse mammary glands during pregnancy and lactation. Genet Mol Res 2012; 11:4746-53. [DOI: 10.4238/2012.october.9.10] [Citation(s) in RCA: 3] [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: 11/03/2022]
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Sedriep S, Zhong K, Nakanishi K, Sweed H, Chui DH, Yang H, Xia X, Catanzaro R, Zhou L, Marotta F. Advantage of carbonate-versus citrate-based alkalinization on bone metabolism in moderately exercising aged male rats fed an acidogenic diet. J BIOL REG HOMEOS AG 2011; 25:341-9. [PMID: 22023758 DOI: pmid/22023758] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
This study aims to determine the effects of different alkaline supplementations on high protein diet-induced abnormalities affecting bone metabolism in rats which were also undergoing physical exercise of moderate intensity. Sixty elderly Sprague-Dawley rats were randomly divided into four groups of 10 rats each and treated for 16 weeks as follows: baseline control group fed normal food (C); acidic high-protein diet supplemented group (chronic acidosis, CA group), bicarbonate-based alkaline formula (Basenpulver, Named, Italy) supplemented chronic acidosis (BB-CA) and citrate-based alkaline supplement (CB-CA). Throughout the supplementation period, rats were put on a treadmill training mimicking a moderate level of exercise. In the CA group, 24-hour urinary calcium (Ca) and phosphorus (P) excretion were increased over 30 percent (p<0.05 vs normal diet controls). However serum Ca was not significantly changed. Femural and tibial BMD and BMC was significantly decreased in the CA group (p<0.05) but both alkaline supplementations prevented such phenomenon (p<0.05 vs CA), without significant difference between the two formulations although the BB-CA group showed significantly more preserved trabecular bone volume (p<0.05 vs CB-CA group). An increased level of over 50 percent of urinary Dpd observed in the CA group (p<0.001) was reverted to normal by both supplementations (p<0.001 vs CA group). The same applied to urinary net acid excretion (p<001) with BB-supplementation performing better than CB-supplementation (p<0.05). Moreover, while the latter did not modify Nterminal telopeptide value, BB-supplementation significantly normalized this parameter (p<0.05 vs CA group) which exercise and acidic protein diet had modified (p<0.01 vs control diet). Overall, the present study shows that a bicarbonate-based alkaline formula, when administered to a dose amenable to clinical use, may significantly protect bone structure in exercising aged animals to a greater extent than a quali/quantitavely similar citrate-based formula.
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Affiliation(s)
- S Sedriep
- Bio-Cell Unit Lab and Analysis Center, Miyazaki, Japan
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Sedriep S, Xia X, Marotta F, Zhou L, Yadav H, Yang H, Soresi V, Catanzaro R, Zhong K, Polimeni A, Chui DH. Beneficial nutraceutical modulation of cerebral erythropoietin expression and oxidative stress: an experimental study. J BIOL REG HOMEOS AG 2011; 25:187-94. [PMID: 21880207 DOI: pmid/21880207] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The main object of this study is to examine the effect of Klamin®, a nutraceutical containing phenylethylamine, phycocyanins, mycosporine-like aminoacids and aphanizomenon flos aquae-phytochrome on the learning and memory ability, the oxidative status and cerebral erythropoietin and its receptor EPO/EPOR system in prematurely senescent (PS) mice. A total of 28 PS mice, selected according to a prior T-maze test, and 26 non-prematurely senescent mice (NPS) mice were chosen. PS animals were divided into 3 groups and followed for 4 weeks: A) normal chow diet; B) added with Klamin® at 20 mg/kg/day (low dose); C) added with Klamin® at 100mg/kg/day (high dose). A further group of NPS mice given either normal food (group D) or high dose Klamin® (group E) was also considered. The behavioral procedures of spatial learning ability (Morris test) showed that PS mice had significantly longer learning time as compared to their NPS counterpart (p<0.01), but this effect was prevented especially in mice supplemented with high-dose Klamin® (p<0.05) which improved performances in NPS mice (p<0.05). High-dose Klamin® supplementation restored the depleted total thiol concentration in the brain observed in PS mice while normalizing their increased malonildialdehyde level (p<0.05). Moreover, the high-dosage only caused a significant upregulation of EPO/EPOR system both in PS and in NPS animals (p<0.05). Taken together, these data suggest that this specific alga Klamath extract has considerable antioxidant and adaptogenic properties, also through a stimulatory effect of cerebral EPO/EPO system.
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Affiliation(s)
- S Sedriep
- Bio-Cell Unit Lab and Analysis Center, Miyazaki, Japan
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26
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Marotta F, Naito Y, Padrini F, Xuewei X, Jain S, Soresi V, Zhou L, Catanzaro R, Zhong K, Polimeni A, Chui DH. Redox balance signalling in occupational stress: modification by nutraceutical intervention. J BIOL REG HOMEOS AG 2011; 25:221-9. [PMID: 21880211 DOI: pmid/21880211] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
There is increasing evidence that psychosocial stress can be viewed as a system-wide derangement of cellular homeostasis, with heightened oxidative stress and triggered proinflammatory mechanisms. The aim of this study is twofold: a) to replicate findings that psychological stress increases oxidative damage and b) to determine whether a fermented papaya preparation known to exert significant protective antioxidant properties could buffer such increases in nuclear DNA damage while also inducing epigenetic protective mechanisms. Twenty-eight sedentary men and women (age range: 28-52), who reported living a stressful lifestyle but with an overall positive attitude, were recruited for this study. Chronic diseases as well as severe burnout and use of drugs for anxiety constituted exclusion criteria. Subjects were supplemented for 1 month with 9 g/day (4.5 g twice a day) of a certified fermented papaya preparation. All subjects were given a stress and sleep quality questionnaire together with a diet and life style assessment. Blood was collected at 2 and 4 week, erythrocyte and leukocyte were separated to assess redox balance and heme oxygenase-1 (HO-1) gene expression while bilirubin oxidized metabolites (BOMs) were tested in the urine. Stressed individuals showed a significant abnormality of redox status with increased MDA of erythrocyte and increased level of 8-0HdG in leukocyte and BOMs excretion (p<0.05). Nutraceutical supplementation brought about a normalization of such values already at the 2 week observation (p<0.05) together with a significant upregulation of HO-1 (p<0.01). Taken together, the results of this study confirm that stressful occupational life per se, without any overt psychiatric illness, may be associated to increased oxidative stress. Supplementation with functional food affecting redox regulation may be part of the therapeutic armamentarium to be considered in this clinical setting.
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Affiliation(s)
- F Marotta
- ReGenera research group, Milan, Italy.
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Wang Y, Wang Y, Li H, Zhu H, Jiang Q, Zhang L, Wang L, Han L, Zhong K, Guo Y, Lu W, Li H, Yang G. Leptin mRNA expression in the rat mammary gland at different activation stages. Genet Mol Res 2011; 10:3657-63. [DOI: 10.4238/2011.october.21.3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Fu B, Wang G, Cui S, Sun T, Cao R, Feng L, Sun X, Chen J, Xi H, Chen Q, Zhong K, Kuang R. MP-04.05: Extraperitoneal Laparoscopic Surgery for the Treatment of Lower Ureteral Disease. Urology 2009. [DOI: 10.1016/j.urology.2009.07.1027] [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]
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Zhong K, Qui S, Wang X. [The application of hansatome microkeratome in LASIK]. Yan Ke Xue Bao 2001; 17:72-5. [PMID: 12567753] [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: 02/28/2023]
Abstract
OBJECTIVE To evaluate the application of Hansatome in excimer laser in situ keratomileusis(LASIK). METHODS Two hundred and sixty-six cases(514 eyes) with myopia were treated with the Hansatome microkeratome and the excimer laser. According to the preoperative spherical equivalent refraction, the patients were divided into three groups: < -8.0 D, -8.0 D(-)-15.0 D and > -15.0 D. The advanced rails of Hansatome microkeratome was revolving, then the stalk of corneal cap was over cornea. Postoperatively for six months all patients had been followed up on visual acuity, refractive status and complication. RESULTS The uncorrected visual acuity in three groups was 0.5 or better in 303, 144 and 28 of the eyes, 278, 124 and 10 had vision of 1.0 or better six months after operation. The refractive status tended to be stable about four to six months after the operation. The complication of operation included corneal epithelial excoriation, incomplete cap, free cap, interfacial foreign bodies, glare, etc. The learning curve of the technique requested half a year. CONCLUSION The Hansatome microkeratome in LASIK is effective for the correction of myopia and it has better safety. The complication of the stalk of corneal capover cornea might be less than which of the inside the nose.
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Affiliation(s)
- K Zhong
- Department of Ophthalmology Huizhou City Center Hospital, Huizhou 516001, China
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Pillai DR, Labbé AC, Vanisaveth V, Hongvangthong B, Pomphida S, Inkathone S, Zhong K, Kain KC. Plasmodium falciparum malaria in Laos: chloroquine treatment outcome and predictive value of molecular markers. J Infect Dis 2001; 183:789-95. [PMID: 11181156 DOI: 10.1086/318836] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.4] [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: 09/27/1999] [Revised: 11/27/2000] [Indexed: 11/03/2022] Open
Abstract
A 28-day treatment trial was undertaken, to determine the efficacy of chloroquine in Laos and to assess the predictive value of molecular markers (cg2, pfmdr1, and pfcrt) that were previously linked to chloroquine resistance. In total, 522 febrile patients were screened for falciparum malaria by rapid diagnostic assays. Of 81 patients (15.5% prevalence) who were positive by the assays and microscopy, 48 were eligible to participate in the 28-day trial. Nine patients defaulted. Chloroquine cured 54% (95% confidence interval, 45.8-61.8) of falciparum-infected patients. Of 18 (46%) patients with treatment failure, 13 (72%) experienced high-grade resistance. Polymorphisms in cg2 and the N86Y mutation in PfMDR1 were not predictive of treatment outcome. A mutation in PfCRT (K76T) was perfectly associated with in vivo chloroquine resistance. However, K76T was also present in in vivo-sensitive isolates, which suggests that the presence of this mutation was necessary, but not sufficient, to predict in vivo outcome in this cohort.
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Affiliation(s)
- D R Pillai
- Centre for Travel and Tropical Medicine, Division of Infectious Diseases, Department of Medicine, Toronto General Hospital and University of Toronto, Toronto, Canada, M5G 2C4
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Zhong K, Li X, Shachar-Hill Y, Picart F, Wishnia A, Springer CS. Magnetic susceptibility shift selected imaging (MESSI) and localized (1)H(2)O spectroscopy in living plant tissues. NMR Biomed 2000; 13:392-397. [PMID: 11114062 DOI: 10.1002/1099-1492(200011)13:7<392::aid-nbm659>3.0.co;2-o] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Maize root segments permeated with aqueous solutions of the paramagnetic agents GdDTPA(2-) or DyDTPA-BMA display two well-resolved NMR peaks corresponding to the signals from intracellular and extracellular (1)H(2)O, which arise from well-understood bulk magnetic susceptibility effects. This allows each component to be studied separately. Images obtained at each frequency with MESSI editing, and single- and multiple-voxel ('spectroscopic imaging') localized spectra, clearly indicate that the agents permeate into the interstitial spaces, and into the longitudinal (xylem/phloem) channels in the stele (core) of the root, confirming earlier assessments. We believe these are the first images of a multicellular tissue acquired in vivo exclusively from the intracellular water proton resonance. This method can be further exploited to study water transport in similar systems.
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Affiliation(s)
- K Zhong
- Department of Chemistry, SUNY Stony Brook, NY 11794-3400, USA
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Ibrahimi A, Bonen A, Blinn WD, Hajri T, Li X, Zhong K, Cameron R, Abumrad NA. Muscle-specific overexpression of FAT/CD36 enhances fatty acid oxidation by contracting muscle, reduces plasma triglycerides and fatty acids, and increases plasma glucose and insulin. J Biol Chem 1999; 274:26761-6. [PMID: 10480880 DOI: 10.1074/jbc.274.38.26761] [Citation(s) in RCA: 279] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Increasing evidence has implicated the membrane protein CD36 (FAT) in binding and transport of long chain fatty acids (FA). To determine the physiological role of CD36, we examined effects of its overexpression in muscle, a tissue that depends on FA for its energy needs and is responsible for clearing a major fraction of circulating FA. Mice with CD36 overexpression in muscle were generated using the promoter of the muscle creatine kinase gene (MCK). Transgenic (MCK-CD36) mice had a slightly lower body weight than control litter mates. This reflected a leaner body mass with less overall adipose tissue, as evidenced by magnetic resonance spectroscopy. Soleus muscles from transgenic animals exhibited a greatly enhanced ability to oxidize fatty acids in response to stimulation/contraction. This increased oxidative ability was not associated with significant alterations in histological appearance of muscle fibers. Transgenic mice had lower blood levels of triglycerides and fatty acids and a reduced triglyceride content of very low density lipoproteins. Blood cholesterol levels were slightly lower, but no significant decrease in the cholesterol content of major lipoprotein fractions was measured. Blood glucose was significantly increased, while insulin levels were similar in the fed state and higher in the fasted state. However, glucose tolerance curves, determined at 20 weeks of age, were similar in control and transgenic mice. In summary, the study documented, in vivo, the role of CD36 to facilitate cellular FA uptake. It also illustrated importance of the uptake process in muscle to overall FA metabolism and glucose utilization.
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Affiliation(s)
- A Ibrahimi
- Department of Physiology and Biophysics, State University of New York, Stony Brook, New York 11794-8661, USA
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Zhong K, Qiu S, Chen Z. [Contrast on therapeutic results of intraocular lens implantation in diabetics and non-diabetics]. Yan Ke Xue Bao 1997; 13:93-5. [PMID: 11189343] [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: 02/19/2023]
Abstract
PURPOSE To observe the results of intraocular lens implantation in diabetics who suffered from cataract. METHODS 30 cases (37 eyes) of diabetics with cataract and 174 cases (197 eyes) of non-diabetics with senile cataract were performed with intraocular lens implantation. The postoperative follow-up was from 2 to 18 months. RESULTS The statistics of the visual acuity in two groups had no difference. The primary factor that effected visual acuity was original retinopathy. Postoperative complications of diabetics group, such as anterior chamber fibrinous exudate, pigment diffusion, were much serious than those of non-diabetic group. But if strong effective hormones were locally administrated, inflammation was absorbed. CONCLUSION The therapeutic results of the diabetics with no or only minor retinopathy were similar with those of non-diabetics.
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Affiliation(s)
- K Zhong
- Department of Ophthalmology, Huizhou City Center Hospital, Huizhou 516001, China
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Abstract
Hyperpolarized 129Xe has been used to obtain gas phase images of mouse lung in vivo, showing distinct ventilation variation as a function of the breathing cycle. Spectra of 129Xe in the thorax show complex structure in both the gas phase (-4 to 3 ppm) and tissue-dissolved (190-205 ppm) regions. The alveolar gas peak shows correlated intensity and frequency oscillations, both attributable to changes in lung volume during breathing. The two major dissolved peaks near 195-200 ppm are attributed to lung parenchyma and to blood; they reach maximum intensity in 5-10 s and decay with an apparent T1 of 30 s. Another peak at 190 ppm takes 20-30 s to reach maximum; this must represent other well-vascularized tissue (e.g., heart and other muscles) in the thorax. The maximum integrated area of the tissue components reaches 30-80% of the maximum alveolar gas area, indicating that imaging at tissue frequencies can be achieved.
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Affiliation(s)
- M E Wagshul
- Department of Radiology, State University of New York at Stony Brook 11794-8460, USA
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Abstract
A general method has been developed to analyze all 2' hydroxyl groups involved in tertiary interactions in RNA in a single experiment. This method involves comparing the activity of populations of circularly permuted RNAs that contain or lack potential hydrogen-bond donors at each position. The 2' hydroxyls of the pre-tRNA substrate identified as potential hydrogen bond donors in intermolecular interactions with the ribozyme from eubacterial RNase P (P RNA) are located in the T stem and T loop, acceptor stem, and 3' CCA regions. To locate the hydrogen-bond acceptors for one of those 2' hydroxyls in the P RNA, a phylogenetically conserved adenosine was mutated to a guanosine. When this mutant P RNA was used, increased cleavage activity of a single circularly permuted substrate within the population was observed. The cleavage efficiency (kcat/Km) of a singly 2'-deoxy-substituted substrate at this position in the T stem was also determined. For the wild-type P RNA, the catalytic efficiency was significantly decreased compared with that of the all-ribo substrate, consistent with the notion that this 2' hydroxyl plays an important role. For the P RNA mutant, no additional effect was found upon 2'-deoxy substitution. We propose that this particular 2' hydroxyl in the pre-tRNA interacts specifically with this adenosine in the P RNA. This method should be useful in examining the role of 2' hydroxyl groups in other RNA-RNA and RNA-protein complexes.
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Affiliation(s)
- T Pan
- Department of Biochemistry and Molecular Biology, University of Chicago, IL 60637, USA
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Lu Z, Qiu S, Zhong K, Wang X, Liang J. [Clinical application of silica ball implant enclosed by an autologous reversal sclera in patients with enucleation]. Yan Ke Xue Bao 1995; 11:111-112. [PMID: 9208667] [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: 05/22/2023]
Abstract
PURPOSE To observe the effects of improved silica ball implantation enclosed by autologous reversal sclera. METHODS After the enucleation of eye balls, we reversed, cleared the autologous sclera, enclosed the silica ball and implanted it in the operative eye. RESULTS 30 cases with enucleation were implanted the prosthetic eyes. The follow-up period was 6 months to 3 years. The prosthetic eyes had the motility of 10 degrees to 25 degrees and the empty socket syndrome was effectively prevented. CONCLUSION The sargical method can overcome the defect that prosthetic eyes cannot rotate after being implanted and has got satisfactory cosmetic effects.
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Affiliation(s)
- Z Lu
- Department of Ophthalmology, Huizhou City Center Hospital, Guangdong, China
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Abstract
The effect of a single break in the phosphodiester backbone of Bacillus subtilis RNAse P RNA (P RNA) was examined using circular permutation analysis (CPA). This method reveals that many of the phosphodiester bonds in this catalytic RNA can be broken with little or no effect on substrate binding. Phosphate positions that show strong effects are located mostly in regions conserved among all RNAse P RNAs, or they are in regions known to interact directly with the pre-tRNA substrate. Two circularly permuted isomers of P RNA were constructed and analyzed in detail. The KM for both circularly permuted isomers is nearly identical to that of the wild-type P RNA. Since the KM of the P RNA is essentially the same as the binding constant to the substrate, this finding confirms the CPA results. The implications of backbone breakage are discussed with respect to folding and catalysis of the RNAse P RNA.
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MESH Headings
- Bacillus subtilis/enzymology
- Base Sequence
- Cloning, Molecular
- Endoribonucleases/metabolism
- Hot Temperature
- Kinetics
- Molecular Sequence Data
- Nucleic Acid Conformation
- Polymerase Chain Reaction
- RNA/chemistry
- RNA/genetics
- RNA/metabolism
- RNA Precursors/chemistry
- RNA Precursors/metabolism
- RNA, Bacterial/chemistry
- RNA, Bacterial/genetics
- RNA, Catalytic/chemistry
- RNA, Catalytic/metabolism
- RNA, Circular
- RNA, Transfer, Phe/chemistry
- RNA, Transfer, Phe/metabolism
- Ribonuclease P
- Substrate Specificity
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Affiliation(s)
- T Pan
- Department of Biochemistry and Molecular Biology, University of Chicago, Illinois 60637
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Abstract
An expanded role for vitamin D (1 alpha,25-(OH)2D3) in mammalian systems has been suggested by recent evidence that its receptor (vitamin D receptor [VDR]) is present not only in classical target organs, but in a variety of normal tissues and organs, tumor tissues, and cancer cell lines. Vitamin D is involved not only in the regulation of calcium homeostasis and bone metabolism, but in the regulation of cell proliferation, differentiation, and immune responses. The role vitamin D may play in normal lung growth, development, and maintenance is unknown. Likewise, its part in lung tumorigenesis is unclear. The present study examined VDR binding activity and VDR expression in normal mouse lung and ethylnitrosourea-induced lung adenomas. Binding of 1 alpha,25-(OH)2D3 was specific and saturable over the concentration range of 0.01 to 0.50 nM, with an affinity (Kd) of 0.93 x 10(-10) M and a total binding capacity (Bmax) of 22 fmol/mg of protein. Scatchard analysis yielded a convex curve, which suggests positive receptor cooperativity. The calculated Hill coefficient equals 1.69, at a receptor concentration of 0.4 nM, consistent with dimerization of the receptor. Western blot analysis showed the presence of 60 kD VDR protein in tumor homogenates, while Northern blot analysis detected the 4.4 kb VDR mRNA in tumor tissue preparations. Immunohistochemistry and in situ hybridization revealed that both adenomatous Clara cells and normal bronchiolar epithelial Clara cells expressed VDR, with the receptor protein present in their nuclei.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- K Zhong
- Department of Pathology, Wayne State University School of Medicine, Detroit, Michigan 48201
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Zhong K, Vasudevan T, Somasundaran P. Floatability of apatites of different type and origin: role of surface area and porosity. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/0301-7516(93)90074-k] [Citation(s) in RCA: 8] [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: 10/27/2022]
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