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Zhang S, Meng N, Liu S, Ruan J, Li H, Xu X, Ruan Q, Xie W. Targeting senescent HDF with the USP7 inhibitor P5091 to enhance DFU wound healing through the p53 pathway. Biochem Biophys Res Commun 2024; 722:150149. [PMID: 38788355 DOI: 10.1016/j.bbrc.2024.150149] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 05/20/2024] [Indexed: 05/26/2024]
Abstract
OBJECTIVE The objective of this study was to examine the potential of USP7 as a target for senolytic therapy and to investigate the molecular mechanism by which its inhibitor selectively induced apoptosis in senescent HDF and enhanced DFU wound healing. METHODS Clinical samples of DFU were collected to detect the expression of USP7 and aging-related proteins using immunohistochemistry and Western blot. In addition, β-galactosidase staining, qPCR, flow cytometry, ROS and MMP kits, and Western blot were used to analyze the biological functions of P5091 on senescence, cycle, and apoptosis. RNAseq was employed to further analyze the molecular mechanism of P5091. Finally, the DFU rat model was established to evaluate the effect of P5091 on wound healing. RESULTS The expression of USP7 and p21 were increased in DFU clinical samples. After treatment with d-glucose (30 mM, 7 days), β-galactosidase staining was deepened, proliferation rate decreased. USP7 inhibitors (P5091) could reduce the release of SASP factors, activate the production of ROS, and reduce MMP. In addition, it induced apoptosis and selectively clears senescent cells through the p53 signaling pathway. Finally, P5091 can improve diabetic wound healing in rats. CONCLUSION This study clarified the molecular mechanism of USP7 inhibitor (P5091) selectively inducing apoptosis of high glucose senescent HDF cells. This provides a new senolytics target and experimental basis for promoting DFU wound healing.
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Affiliation(s)
- Siyu Zhang
- Institute of Burns, Wuhan Third Hospital (Tongren Hospital of WuHan University), Wuhan 430060, China.
| | - Na Meng
- School of Medicine, Jianghan University, Wuhan, 430056, China.
| | - Shuhua Liu
- Institute of Burns, Wuhan Third Hospital (Tongren Hospital of WuHan University), Wuhan 430060, China.
| | - Jingjing Ruan
- Institute of Burns, Wuhan Third Hospital (Tongren Hospital of WuHan University), Wuhan 430060, China.
| | - Hongju Li
- Marine Biomedical Research Institute of Qingdao, Key Laboratory of Marine Drugs Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China.
| | - Ximing Xu
- Marine Biomedical Research Institute of Qingdao, Key Laboratory of Marine Drugs Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China.
| | - Qiongfang Ruan
- Institute of Burns, Wuhan Third Hospital (Tongren Hospital of WuHan University), Wuhan 430060, China.
| | - Weiguo Xie
- Institute of Burns, Wuhan Third Hospital (Tongren Hospital of WuHan University), Wuhan 430060, China.
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Sun Z, Hu K, Wang T, Chen X, Meng N, Peng X, Ma L, Tian D, Xiong S, Zhou C, Yang Y. Enhanced physiochemical, antibacterial, and hemostatic performance of collagen-quaternized chitosan-graphene oxide sponges for promoting infectious wound healing. Int J Biol Macromol 2024; 266:131277. [PMID: 38565366 DOI: 10.1016/j.ijbiomac.2024.131277] [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: 01/10/2024] [Revised: 03/26/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024]
Abstract
Bacteria-infected wound healing has attracted widespread attention in biomedical engineering. Wound dressing is a potential strategy for repairing infectious wounds. However, the development of wound dressing with appropriate physiochemical, antibacterial, and hemostatic properties, remains challenging. Hence, there is a motivation to develop new synthetic dressings to improve bacteria-infected wound healing. Here, we fabricate a biocompatible sponge through the covalent crosslinking of collagen (Col), quaternized chitosan (QCS), and graphene oxide (GO). The resulting Col-QCS-GO sponge shows an elastic modulus of 1.93-fold higher than Col sponge due to enhanced crosslinking degree by GO incorporation. Moreover, the fabricated Col-QCS-GO sponge shows favorable porosity (84.30 ± 3.12 %), water absorption / retention (2658.0 ± 113.4 % / 1114.0 ± 65.7 %), and hemostasis capacities (blood loss <50.0 mg). Furthermore, the antibacterial property of the Col-QCS-GO sponge under near-infrared (NIR) irradiation is significantly enhanced (the inhibition rates are 99.9 % for S. aureus and 99.9 % for E. coli) due to the inherent antibacterial properties of QCS and the photothermal antibacterial capabilities of GO. Finally, the Col-QCS-GO+NIR sponge exhibits the lowest percentage of wound area (9.05 ± 1.42 %) at day 14 compared to the control group (31.61 ± 1.76 %). This study provides new insights for developing innovative sponges for bacteria-infected wound healing.
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Affiliation(s)
- Zhiwei Sun
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Keqiang Hu
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Ting Wang
- Department of Medical Ultrasound, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Xiangru Chen
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Na Meng
- Department of Cardiovascular Medicine, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Ximing Peng
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Liya Ma
- The Centre of Analysis and Measurement of Wuhan University, Wuhan University, Wuhan 430072, PR China
| | - Di Tian
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, Department of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China
| | - Shaotang Xiong
- The Second People's Hospital of China Three Gorges University·The Second People's Hospital of Yichang, Hubei, China
| | - Chuchao Zhou
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China.
| | - Yanqing Yang
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China.
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Yao J, Luo Z, Lin J, Meng N, Guo J, Xu H, Shi R, Zhao L, Zhou J, Yan F, Wang B, Mao H. Antimicrobial and Antiviral Nanofibers Halt Co-Infection Spread via Nuclease-Mimicry and Photocatalysis. Adv Sci (Weinh) 2024:e2309590. [PMID: 38647392 DOI: 10.1002/advs.202309590] [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] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/17/2024] [Indexed: 04/25/2024]
Abstract
The escalating spread of drug-resistant bacteria and viruses is a grave concern for global health. Nucleic acids dominate the drug-resistance and transmission of pathogenic microbes. Here, imidazolium-type poly(ionic liquid)/porphyrin (PIL-P) based electrospun nanofibrous membrane and its cerium (IV) ion complex (PIL-P-Ce) are developed. The obtained PIL-P-Ce membrane exhibits high and stable efficiency in eradicating various microorganisms (bacteria, fungi, and viruses) and decomposing microbial antibiotic resistance genes and viral nucleic acids under light. The nuclease-mimetic and photocatalytic mechanisms of the PIL-P-Ce are elucidated. Co-infection wound models in mice with methicillin-resistant S. aureus and hepatitis B virus demonstrate that PIL-P-Ce integrate the triple effects of cationic polymer, photocatalysis, and nuclease-mimetic activities. As revealed by proteomic analysis, PIL-P-Ce shows minimal phototoxicity to normal tissues. Hence, PIL-P-Ce has potential as a "green" wound dressing to curb the spread of drug-resistant bacteria and viruses in clinical settings.
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Affiliation(s)
- Jieran Yao
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Zhenhong Luo
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Jiaying Lin
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Na Meng
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Jiangna Guo
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Hui Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Rongwei Shi
- School of Material and Chemical Engineering, Tongren University, Tongren, 554300, China
| | - Linhui Zhao
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Jiateng Zhou
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Feng Yan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Bin Wang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Hailei Mao
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
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Qi S, Lei Z, Huo Q, Zhao J, Huang T, Meng N, Liao J, Yi J, Shang C, Zhang X, Yang H, Hu Q, He C. Ultrathin High-Entropy Fe-Based Spinel Oxide Nanosheets with Metalloid Band Structures for Efficient Nitrate Reduction toward Ammonia. Adv Mater 2024:e2403958. [PMID: 38641326 DOI: 10.1002/adma.202403958] [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] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/16/2024] [Indexed: 04/21/2024]
Abstract
Spinel oxides with tunable chemical compositions have emerged as versatile electrocatalysts, however their performance is greatly limited by small surface area and low electron conductivity. Here, ultrathin high-entropy Fe-based spinel oxides nanosheets are rationally designed (i.e., (Co0.2Ni0.2Zn0.2Mg0.2Cu0.2)Fe2O4; denotes A5Fe2O4) in thickness of ≈4.3 nm with large surface area and highly exposed active sites via a modified sol-gel method. Theoretic and experimental results confirm that the bandgap of A5Fe2O4 nanosheets is significantly smaller than that of ordinary Fe-based spinel oxides, realizing the transformation of binary spinel oxide from semiconductors to metalloids. As a result, such A5Fe2O4 nanosheets manifest excellent performance for the nitrate reduction reaction (NO3 -RR) to ammonia (NH3), with a NH3 yield rate of ≈2.1 mmol h-1 cm-2 at -0.5 V versus Reversible hydrogen electrode, outperforming other spinel-based electrocatalysts. Systematic mechanism investigations reveal that the NO3 -RR is mainly occurred on Fe sites, and introducing high-entropy compositions in tetrahedral sites regulates the adsorption strength of N and O-related intermediates on Fe for boosting the NO3 -RR. The above findings offer a high-entropy platform to regulate the bandgap and enhance the electrocatalytic performance of spinel oxides.
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Affiliation(s)
- Shuai Qi
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Zhihao Lei
- Global Innovative Center of Advanced Nanomaterials, College of Engineering, Science and Environment, University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Qihua Huo
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Jinwen Zhao
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Tianchi Huang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Na Meng
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Jinlian Liao
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Jiabao Yi
- Global Innovative Center of Advanced Nanomaterials, College of Engineering, Science and Environment, University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Chunyan Shang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Xue Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Hengpan Yang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Qi Hu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Chuanxin He
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
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Meng N, Zhou C, Sun Z, Chen X, Xiong S, Tao M, Qin Y, Hu K, Ma L, Tian D, Zhu F, Yang Y. Tailored gelatin methacryloyl-based hydrogel with near-infrared responsive delivery of Qiai essential oils boosting reactive oxygen species scavenging, antimicrobial, and anti-inflammatory activities for diabetic wound healing. Int J Biol Macromol 2024; 263:130386. [PMID: 38395288 DOI: 10.1016/j.ijbiomac.2024.130386] [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: 11/20/2023] [Revised: 02/20/2024] [Accepted: 02/20/2024] [Indexed: 02/25/2024]
Abstract
The management of diabetic wounds poses a substantial economic and medical burden for diabetic patients. Oxidative stress and persistent bacterial infections are considered to be the primary factors. Qiai essential oil (QEO) exhibits various pharmacological characteristics, including inflammatory-reducing, antibacterial, and antioxidant properties. Nevertheless, the hydrophobic nature and propensity for explosive release of this substance present constraints on its potential for future applications. Here, we developed a stimulus-responsive hydrogel to overcome the multiple limitations of QEO-based wound dressings. The QEO was encapsulated within graphene oxide (GO) through repeated extrusion using an extruder. Subsequently, QEO@GO nanoparticles were incorporated into a Gelatin-methacryloyl (GelMA) hydrogel. The QEO@GO-GelMA hydrogel demonstrated controlled release ablation, photothermal antibacterial effects, and contact ablation against two representative bacterial strains. It effectively reduced reactive oxygen species (ROS) generation, promoted angiogenesis, and decreased levels of the pro-inflammatory cytokine interleukin-6 (IL-6), thereby accelerating the healing process of diabetic wounds. In addition, in vitro and in vivo tests provided further evidence of the favorable biocompatibility of this multifunctional hydrogel dressing. Overall, the QEO@GO-GelMA hydrogel provides numerous benefits, encompassing antimicrobial properties, ROS-scavenging abilities, anti-inflammatory effects, and the capacity to expedite diabetic wound healing. These attributes make it an optimal choice for diabetic wound management.
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Affiliation(s)
- Na Meng
- Department of Cardiovascular Medicine, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Chuchao Zhou
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Zhiwei Sun
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Xiangru Chen
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Shaotang Xiong
- The Second People's Hospital of China Three Gorges University, The Second People's Hospital of Yichang, Hubei, China
| | - Mengjuan Tao
- Department of Clinical Laboratory, Wuhan Center for Clinical Laboratory, Wuhan, Hubei, China
| | - Yueyue Qin
- Department of Cardiovascular Medicine, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Keqiang Hu
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China
| | - Liya Ma
- The Centre of Analysis and Measurement of Wuhan University, Wuhan University, Wuhan 430072, China
| | - Di Tian
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, Department of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China
| | - Fen Zhu
- Department of Cardiovascular Medicine, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China.
| | - Yanqing Yang
- Department of Plastic Surgery, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan 430060, China.
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Huang Y, Wang X, Meng N, Li L, Zhang J, Wu Q, Zhang Y. Suboptimal status of tummy time for infants in early childhood education institutions in urban China: A cross-sectional study. J Glob Health 2024; 14:04048. [PMID: 38483439 PMCID: PMC10939112 DOI: 10.7189/jogh.14.04048] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024] Open
Abstract
Background Although tummy time is recommended as a form of physical activity for non-movable infants worldwide, little is known regarding the current status of tummy time practices among Chinese infants. Early childhood education (ECE) institutions provide children with rich learning experiences; however, tummy time practices among infants in these ECE institutions were unclear. This study aimed to investigate the status of tummy time among infants within the context of ECE institutions. Methods We conducted a cross-sectional survey with primary caregivers of infants aged 0-11 months across 31 provinces of China from 1 March to 30 April 2023. To recruit participants, we collaborated with Gymboree Play & Music, an ECE institution with over 500 centres in nearly 200 cities in urban China. Our survey instrument was developed based on the World Health Organization (WHO) guidelines and literature to collect data on infants' tummy time practices, caregivers' tummy time knowledge and information sources. We used self-administered questionnaires through WeChat, in which participants scanned a quick response (QR) code to complete the questionnaire. Results We included 1040 infants and their primary caregivers, with 504 infants aged 0-5 and 536 infants aged 6-11 months old. Less than half of infants (48.2%) started tummy time in the neonatal period, with 20.5% starting within two weeks after birth. Only 27.2% of infants engaged in at least 30 minutes of tummy time during the last 24 hours, with infants aged 0-5 months significantly lower than those aged 6-11 months (21.6 vs 32.5%, P < 0.0001). No significant difference was found between attending ECE class and non-attending ECE class groups for the proportion of infants with tummy time ≥30 minutes per day (28.9 vs 23.4%, P = 0.0625); however, infants aged 0-5 months in the attending group engaged in longer duration of tummy time than those in the non-attending group (P = 0.0005). The compliance with the tummy time guidelines in infants receiving long-nurturing care was significantly higher than those receiving short-nurturing care (30.4 vs 22.1%, P = 0.0036). Only 42.7% of caregivers knew that at least 30 minutes daily tummy time was necessary for infant, and more primary caregivers in the attending group knew that, compared to the non-attending group (45.3 vs 36.8%, P = 0.0098). Conclusions The current status of infants' tummy time practices and caregivers' knowledge are generally suboptimal within the context of ECE institutions in urban China. Longer nurturing time contributes to higher compliance with tummy time guidelines. Effectively promoting tummy time practices through multiple channels in China is crucial.
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Affiliation(s)
- Yiwen Huang
- Child Healthcare Centre, Children’s Hospital, Capital Institute of Paediatrics, Beijing, China
| | - Xiaotong Wang
- Department of Integrated Early Childhood Development, Capital Institute of Paediatrics, Beijing, China
| | - Na Meng
- Department of Integrated Early Childhood Development, Capital Institute of Paediatrics, Beijing, China
| | - Lin Li
- Beijing KidsHome Children Development Centre, Beijing, China
| | - Jian Zhang
- Department of Integrated Early Childhood Development, Capital Institute of Paediatrics, Beijing, China
| | - Qiong Wu
- Department of Integrated Early Childhood Development, Capital Institute of Paediatrics, Beijing, China
| | - Yanfeng Zhang
- Department of Integrated Early Childhood Development, Capital Institute of Paediatrics, Beijing, China
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Wu Q, Meng N, Wang X, Li L, Zhang J, Huang Y, Zhang Y. Complementary feeding practices for children aged 6-23 months in early childhood education institutions in urban China: A cross-sectional study. J Glob Health 2024; 14:04043. [PMID: 38454879 PMCID: PMC10921127 DOI: 10.7189/jogh.14.04043] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024] Open
Abstract
Background Appropriate infant and young child feeding (IYCF) plays a crucial role in promoting the healthy growth of children. Currently, many Chinese urban parents are seeking care of children from the early childhood education (ECE) institutions, however, little is known about the feeding practices of infants and young children in ECE institutions. This study aims to investigate the complementary feeding practices for Chinese urban children aged 6-23 months in ECE institutions and explore potential factors influencing their feeding practices. Methods This cross-sectional study was conducted among primary caregivers of children aged 6-23 months in ECE institutions across 31 provinces in China from 1 March to 30 April 2023. Convenience sampling was used to recruit caregivers from centres of Gymboree Play & Music (an ECE institution). Self-administered questionnaires were designed using the online survey tool Sojump and distributed through WeChat platform, which collected information on 1) children's complementary feeding practices; 2) food frequency of seven food groups; 3) caregivers' feeding knowledge and practices; 4) frequency of children attended ECE classes and the primary caregivers' daily nurturing care time; 5) source of information on complementary feeding. Results A total of 2731 children and their caregivers were surveyed, with 416 children aged 6-11 months and 2315 children aged 12-23 months. The prevalence of minimum dietary diversity (MDD), minimum meal frequency (MMF), and minimum acceptable diet (MAD) was 59.4, 60.6, and 39.2%, respectively. Only 17.3% caregivers believed that continued breastfeeding should be at two years or above, and 29.5% children were continuously breastfed at 12-23 months (CBF). The proportion of non-responsive feeding practices among caregivers ranged from 28 to 64%. Except for CBF, the prevalence of other key complementary feeding practices was higher among children who attending ECE classes than those not attending ECE classes (all P < 0.05). Moreover, children aged 12-23 months who received long-nursing care time (≥4h/d) had significantly higher MMF and MAD prevalence than those in short-nursing care time group (MMF = 66.2 vs. 58.8%, P = 0.0003; MAD = 44.2 vs. 38.3%, P = 0.0047). Conclusions The complementary feeding practices of children aged 6-23 months in ECE institutions in urban China remained suboptimal, and non-responsive feeding practices among caregivers were common. The attendance of ECE classes and the caregivers' daily nurturing care time could be beneficial in ensuring children to comply with complementary feeding recommendations.
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Affiliation(s)
- Qiong Wu
- Department of Integrated Early Childhood Development, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Na Meng
- Department of Integrated Early Childhood Development, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Xiaotong Wang
- Department of Integrated Early Childhood Development, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Lin Li
- Beijing KidsHome Children Development Centre, Beijing, China
| | - Jian Zhang
- Department of Integrated Early Childhood Development, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
| | - Yiwen Huang
- Child Healthcare Center, Children’s Hospital, Capital Institute of Pediatrics, Beijing, China
| | - Yanfeng Zhang
- Department of Integrated Early Childhood Development, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, China
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Huang Y, Li L, Zhao C, Zhong P, Wang X, Geng Y, Meng N, Wu Q, Zhang Y. Leveraging nursery and early childhood education institutions for improving feeding and movement behaviours of infants and young children in China. J Glob Health 2024; 14:03011. [PMID: 38330205 PMCID: PMC10852538 DOI: 10.7189/jogh.14.03011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024] Open
Affiliation(s)
- Yiwen Huang
- Child Healthcare Center, Children’s Hospital, Capital Institute of Paediatrics, Beijing, China
| | - Lin Li
- Beijing KidsHome Children Development Center, Beijing, China
| | - Chen Zhao
- Beijing KidsHome Children Development Center, Beijing, China
| | - Peijing Zhong
- GYMBOREE Educational Information Consultation CO. LTD, Shanghai, China
| | - Xiaotong Wang
- Department of Integrated Early Childhood Development, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Paediatrics, Beijing, China
| | - Yi Geng
- Beijing KidsHome Children Development Center, Beijing, China
| | - Na Meng
- Department of Integrated Early Childhood Development, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Paediatrics, Beijing, China
| | - Qiong Wu
- Department of Integrated Early Childhood Development, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Paediatrics, Beijing, China
| | - Yanfeng Zhang
- Department of Integrated Early Childhood Development, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Paediatrics, Beijing, China
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Zhao C, Liu G, Lin Y, Li X, Meng N, Wang X, Fu S, Yu J, Ding B. Diphylleia Grayi-Inspired Intelligent Temperature-Responsive Transparent Nanofiber Membranes. Nanomicro Lett 2024; 16:65. [PMID: 38175378 PMCID: PMC10766919 DOI: 10.1007/s40820-023-01279-z] [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: 07/01/2023] [Accepted: 11/08/2023] [Indexed: 01/05/2024]
Abstract
Nanofiber membranes (NFMs) have become attractive candidates for next-generation flexible transparent materials due to their exceptional flexibility and breathability. However, improving the transmittance of NFMs is a great challenge due to the enormous reflection and incredibly poor transmission generated by the nanofiber-air interface. In this research, we report a general strategy for the preparation of flexible temperature-responsive transparent (TRT) membranes, which achieves a rapid transformation of NFMs from opaque to highly transparent under a narrow temperature window. In this process, the phase change material eicosane is coated on the surface of the polyurethane nanofibers by electrospray technology. When the temperature rises to 37 °C, eicosane rapidly completes the phase transition and establishes the light transmission path between the nanofibers, preventing light loss from reflection at the nanofiber-air interface. The resulting TRT membrane exhibits high transmittance (> 90%), and fast response (5 s). This study achieves the first TRT transition of NFMs, offering a general strategy for building highly transparent nanofiber materials, shaping the future of next-generation intelligent temperature monitoring, anti-counterfeiting measures, and other high-performance devices.
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Affiliation(s)
- Cengceng Zhao
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China
| | - Gaohui Liu
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China
| | - Yanyan Lin
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China
| | - Xueqin Li
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China
| | - Na Meng
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China
| | - Xianfeng Wang
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China.
| | - Shaoju Fu
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China.
| | - Jianyong Yu
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China
| | - Bin Ding
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, People's Republic of China.
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Meng N, Gong Y, Jin YL, Sun YQ, Zhang HX, Tian YP. [Study on clearance of chlorfenapyr via blood purification (a case analysis)]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:840-843. [PMID: 38073212 DOI: 10.3760/cma.j.cn121094-20230328-00098] [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: 12/18/2023]
Abstract
This paper analyzed the clinical data of a patient with acute oral emamectin·chlorfenapyr poisoning, and discussed the effect of blood purification therapy on chlorfenapyr poisoning. Chlorfenapyr was detected in the blood, urine, ultrafiltrate and plasma exchange fluid of the patient, and the concentrations of chlorfenapyr poison gradually decreased with time. Blood purification has a certain effect on chlorfenapyr, and early blood purification may be an effective measure to treat chlorfenapyr poisoning.
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Affiliation(s)
- N Meng
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Y Gong
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Y L Jin
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Y Q Sun
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - H X Zhang
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Y P Tian
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
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Sun X, Liang H, Wang H, Meng N, Jin S, Zhou N. Silk fibroin/polyvinyl alcohol composite film loaded with antibacterial AgNP/polydopamine-modified montmorillonite; characterization and antibacterial properties. Int J Biol Macromol 2023; 251:126368. [PMID: 37591434 DOI: 10.1016/j.ijbiomac.2023.126368] [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: 05/21/2023] [Revised: 08/12/2023] [Accepted: 08/14/2023] [Indexed: 08/19/2023]
Abstract
In this study, a kind of nanocomposite film was fabricated via combining silk fibroin, polyvinyl alcohol (SF/PVA) and AgNP/polydopamine-modified Montmorillonite (AgNP/PDA-Mt). The structural characteristics and properties of the SF/PVA/AgNP/PDA-Mt nanocomposites films were identified using X-ray diffraction (XRD), Thermal gravimetric analyzer (TGA), Fourier transform infrared spectroscopy (FTIR), EDS-mapping analyses and Scanning electron microscope (SEM). The results indicated enhanced thermal performance of SF/PVA/AgNP/PDA-Mt nanocomposites with increased AgNP/PDA-Mt weight. The nanocomposite film exhibited excellent antibacterial activity against E. coli and S. aureus. The 2 % SF/PVA/AgNP/PDA-Mt film showed the highest zone of inhibition with an average inhibition circle diameter of 26.1 mm against E. coli and 20.61 mm against S. aureus. Cytotoxicity test results indicated that the nanocomposites films were biocompatible with L929 cells with a 100 % survival rate, which can be considered as one of the advantages of new nanocomposites films. These findings suggest that SF/PVA/AgNP/PDA-Mt films have potential clinical applications in wound dressing and antibacterial biomedical applications.
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Affiliation(s)
- Xuemei Sun
- School of Food Science and Pharmaceutical Engineering, Nanjing normal university, Nanjing, PR china
| | - Han Liang
- School of Food Science and Pharmaceutical Engineering, Nanjing normal university, Nanjing, PR china
| | - Huiyan Wang
- School of Food Science and Pharmaceutical Engineering, Nanjing normal university, Nanjing, PR china
| | - Na Meng
- School of Food Science and Pharmaceutical Engineering, Nanjing normal university, Nanjing, PR china.
| | - Suxing Jin
- School of Food Science and Pharmaceutical Engineering, Nanjing normal university, Nanjing, PR china.
| | - Ninglin Zhou
- Jiangsu Engineering Research Center for Biomedical Function Materials, Nanjing Normal University, Nanjing 210046, China; Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210097, China.
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Wang X, Huang Y, Meng N, Zhang J, Wu Q, Zhang Y. Suboptimal movement behaviours among children under two years old in early childhood education institutions in urban China: A cross-sectional study. J Glob Health 2023; 13:04110. [PMID: 37766637 PMCID: PMC10534191 DOI: 10.7189/jogh.13.04110] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023] Open
Abstract
Background Healthy movement behaviours in early life promote better physical health and facilitate psychological development. Early childhood education (ECE) institutions provide opportunities for caregivers to improve children's movement behaviour practices, but little is known about the current status of movement behaviours among infants and young children in urban China in this context. We aimed to investigate the movement behaviour status of children under two years of age via ECE institutions and compare movement behaviour practices and knowledge between children attending ECE classes and those not attending. Methods We conducted the cross-sectional survey from 1 March to 30 April 2023 in Gymboree Play&Music, an ECE institution covering 31 provinces in China. We developed our survey instrument based on World Health Organization (WHO) guidelines to measure children's movement behaviour practices and caregivers' movement behaviour knowledge. We carried out the online questionnaire survey through Sojump, the largest professional online survey platform in China. We sent a quick response (QR) code to Gymboree Play&Music centres; the QR code was linked to a questionnaire intended for caregiver members and non-members coming for experience classes and activities. Results We surveyed 3355 primary caregivers, encompassing 504, 536, and 2315 children aged 0-5 months, 6-11 months, and 12-23 months, respectively. Overall, less than half of the children met recommendations in physical activity time (PAT) (19.2%), physical restraint (PR) (45.8%), and screen time (ST) (46.4%) during the last 24 hours. PAT, outdoor time (OT), and sleep duration (SD) in children aged 0-5 months were significantly lower than in the other two age groups, while ST was significantly higher than in the other two age groups during the last 24 hours (all P < 0.001). For children attending ECE classes, PAT, OT, and SD were significantly higher than those not attending ECE during the last 24 hours and the last two weeks (all P < 0.05). All indicators in the long-nursing care time (NCT) group were significantly higher than those in the short-NCT group, while there was no statistical difference in SD between the two groups (66.6% vs 65.6%; P = 0.558). Conclusions The status of movement behaviours for children under two years old in urban China is not optimistic, especially for PAT, PR, and ST. Additionally, attending early childhood education classes and primary caregivers' daily nurturing care time are important for infants and young children to adhere to movement guidelines. Consequently, more ECE institution-specific practical strategies and educational materials are needed to promote compliance with movement behaviour guidelines.
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Affiliation(s)
- Xiaotong Wang
- Department of Integrated Early Childhood Development, Capital Institute of Pediatrics, Beijing, China
| | - Yiwen Huang
- Child Healthcare Center, Children’s Hospital, Capital Institute of Pediatrics, Beijing, China
| | - Na Meng
- Department of Integrated Early Childhood Development, Capital Institute of Pediatrics, Beijing, China
| | - Jian Zhang
- Department of Integrated Early Childhood Development, Capital Institute of Pediatrics, Beijing, China
| | - Qiong Wu
- Department of Integrated Early Childhood Development, Capital Institute of Pediatrics, Beijing, China
| | - Yanfeng Zhang
- Department of Integrated Early Childhood Development, Capital Institute of Pediatrics, Beijing, China
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Wang F, Li Y, Tang D, Yang B, Tian T, Tian M, Meng N, Xie W, Zhang C, He Z, Zhu X, Ming D, Liu Y. Exploration of the SIRT1-mediated BDNF-TrkB signaling pathway in the mechanism of brain damage and learning and memory effects of fluorosis. Front Public Health 2023; 11:1247294. [PMID: 37711250 PMCID: PMC10499441 DOI: 10.3389/fpubh.2023.1247294] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 08/16/2023] [Indexed: 09/16/2023] Open
Abstract
Introduction Fluoride is considered an environmental pollutant that seriously affects organisms and ecosystems, and its harmfulness is a perpetual public health concern. The toxic effects of fluoride include organelle damage, oxidative stress, cell cycle destruction, inflammatory factor secretion, apoptosis induction, and synaptic nerve transmission destruction. To reveal the mechanism of fluorosis-induced brain damage, we analyzed the molecular mechanism and learning and memory function of the SIRT1-mediated BDNF-TrkB signaling pathway cascade reaction in fluorosis-induced brain damage through in vivo experiments. Methods This study constructed rat models of drinking water fluorosis using 50 mg/L, 100 mg/L, and 150 mg/L fluoride, and observed the occurrence of dental fluorosis in the rats. Subsequently, we measured the fluoride content in rat blood, urine, and bones, and measured the rat learning and memory abilities. Furthermore, oxidative stress products, inflammatory factor levels, and acetylcholinesterase (AchE) and choline acetyltransferase (ChAT) activity were detected. The pathological structural changes to the rat bones and brain tissue were observed. The SIRT1, BDNF, TrkB, and apoptotic protein levels were determined using western blotting. Results All rats in the fluoride exposure groups exhibited dental fluorosis; decreased learning and memory abilities; and higher urinary fluoride, bone fluoride, blood fluoride, oxidative stress product, and inflammatory factor levels compared to the control group. The fluoride-exposed rat brain tissue had abnormal AchE and ChAT activity, sparsely arranged hippocampal neurons, blurred cell boundaries, significantly fewer astrocytes, and swollen cells. Furthermore, the nucleoli were absent from the fluoride-exposed rat brain tissue, which also contained folded neuron membranes, deformed mitochondria, absent cristae, vacuole formation, and pyknotic and hyperchromatic chromatin. The fluoride exposure groups had lower SIRT1, BDNF, and TrkB protein levels and higher apoptotic protein levels than the control group, which were closely related to the fluoride dose. The findings demonstrated that excessive fluoride caused brain damage and affected learning and memory abilities. Discussion Currently, there is no effective treatment method for the tissue damage caused by fluorosis. Therefore, the effective method for preventing and treating fluorosis damage is to control fluoride intake.
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Affiliation(s)
- Feiqing Wang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
- Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Yanju Li
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Dongxin Tang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Bo Yang
- Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Tingting Tian
- Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Mengxian Tian
- Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Na Meng
- Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Wei Xie
- Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou Province, China
| | - Chike Zhang
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Zhixu He
- National & Guizhou Joint Engineering Laboratory for Cell Engineering and Biomedicine Technique, Guiyang, Guizhou Province, China
| | - Xiaodong Zhu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
- Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Dong Ming
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Yang Liu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
- National & Guizhou Joint Engineering Laboratory for Cell Engineering and Biomedicine Technique, Guiyang, Guizhou Province, China
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Wang F, Zhao J, Zhang C, Yang B, Tian T, Tian M, Meng N, Xie W, Liu G, Zhu X, Su M, He Z, Liu Y, Tang D, Li Y. Effect of microserum environment stimulation on extraction and biological function of colorectal cancer stem cells. Discov Oncol 2023; 14:156. [PMID: 37639070 PMCID: PMC10462592 DOI: 10.1007/s12672-023-00779-z] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 08/22/2023] [Indexed: 08/29/2023] Open
Abstract
BACKGROUND 3D cancer stem cell (CSC) cultures are widely used as in vitro tumor models. In this study, we determined the effects of enriching HCT116 tumor spheres initially cultured in serum-free medium with different concentrations of serum, focusing on the effect of microserum environment stimulation on extraction and biological function of colorectal cancer stem cells (CCSCs). METHODS CCSCs were enriched in standard serum-free medium and serum-free medium with different concentrations of serum for 1 week. The expression of CSC-associated markers in CCSCs, and the presence and relative proportion of CSCs (CD133/CD44 cell sorting) were then determined to elucidate the effect of the microserum environment on the preservation of CSC-related features. Further, the tumorigenic capacity of CCSCs was evaluated in an immunodeficiency mouse model. RESULTS Our data indicated that a significantly greater number of spheres with a greater size range and high viability without drastic alteration in biological and structural features, which maintained self-renewal potential after sequential passages were formed after serum supplementation. Real-time analysis showed that both serum spheres and serum-free spheres displayed similar expression patterns for key stemness genes. Serum spheres showed higher expression of the CSC surface markers CD133 and CD44 than did CSCs spheres cultured in serum-free medium. Adherent cultures in complete medium could adapt to the serum-containing microenvironment faster and showed higher proliferation ability. The addition of serum induced EMT and promoted the migration and invasion of serum globular cells. Compared with serum-free cells and adherent cells, serum spheres showed higher tumor initiation ability. CONCLUSIONS Microserum environment stimulation could be an effective strategy for reliable enrichment of intact CCSCs, and a more efficient CSC enrichment method.
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Affiliation(s)
- Feiqing Wang
- Clinical Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001 Guizhou Province China
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin City, 300072 China
| | - Jianing Zhao
- Clinical Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001 Guizhou Province China
| | - Chike Zhang
- Department of Hematology Oncology, Affiliated Hospital of Guizhou Medical University, No. 4 Bei Jing Road, Yunyan District, Guiyang, 550004 Guizhou Province China
| | - Bo Yang
- Clinical Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001 Guizhou Province China
| | - Tingting Tian
- Clinical Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001 Guizhou Province China
| | - Mengxian Tian
- Clinical Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001 Guizhou Province China
| | - Na Meng
- Clinical Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001 Guizhou Province China
| | - Wei Xie
- Clinical Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001 Guizhou Province China
| | - Guangyang Liu
- Clinical Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001 Guizhou Province China
| | - Xiaodong Zhu
- Clinical Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001 Guizhou Province China
| | - Min Su
- Key Laboratory of Adult Stem Cell Translational Research, Chinese Academy of Medical Sciences, Guizhou Medical University, Guiyang, 550004 Guizhou Province China
| | - Zhixu He
- Key Laboratory of Adult Stem Cell Translational Research, Chinese Academy of Medical Sciences, Guizhou Medical University, Guiyang, 550004 Guizhou Province China
| | - Yang Liu
- Clinical Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001 Guizhou Province China
- Key Laboratory of Adult Stem Cell Translational Research, Chinese Academy of Medical Sciences, Guizhou Medical University, Guiyang, 550004 Guizhou Province China
| | - Dongxin Tang
- Clinical Medical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No. 71 Bao Shan North Road, Yunyan District, Guiyang, 550001 Guizhou Province China
| | - Yanju Li
- Department of Hematology Oncology, Affiliated Hospital of Guizhou Medical University, No. 4 Bei Jing Road, Yunyan District, Guiyang, 550004 Guizhou Province China
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Yang F, Shi W, Meng N, Zhao Y, Ding X, Li Q. Antimicrobial resistance and virulence profiles of staphylococci isolated from clinical bovine mastitis. Front Microbiol 2023; 14:1190790. [PMID: 37455736 PMCID: PMC10344457 DOI: 10.3389/fmicb.2023.1190790] [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: 03/21/2023] [Accepted: 06/15/2023] [Indexed: 07/18/2023] Open
Abstract
Staphylococci, mainly including Staphylococcus aureus and coagulase-negative staphylococci (CNS), are one of the most common pathogens causing bovine mastitis worldwide. In this study, we investigated the antimicrobial resistance and virulence profiles of staphylococci from clinical bovine mastitis in Ningxia Hui Autonomous Region of China. Antimicrobial resistance was determined by disc diffusion combined with E-test method. Genes of antimicrobial resistance and virulence factors were determined by PCR. A total of 332 staphylococcal isolates were confirmed from 1,519 mastitic milk samples, including 172 S. aureus and 160 CNS isolates. Fifteen CNS species were identified, with S. chromogenes being the most frequent found (49.4%), followed by S. equorum (13.8%). Noticeably, 2 S. agnetis isolates were found among the CNS isolates. To our knowledge, this is the first report documenting the presence of S. agnetis from bovine mastitis in China. The S. aureus and CNS isolates showed high resistance against penicillin, followed by erythromycin and tetracycline. Multidrug resistance was found in 11.6 and 16.3% of the S. aureus and CNS isolates, respectively. Resistance to penicillin was attributed to the presence of blaZ, erythromycin resistance to ermC (alone or combined with ermB) and tetracycline resistance to tetK (alone or combined with tetM). Notably, one S. equorum isolate and one S. saprophyticus isolate were both methicillin-resistant and mecA positive. Additionally, all S. aureus isolates carried the adhesin genes fnbpA, clfA, clfB, and sdrC, and most of them contained cna and sdrE. Conversely, only a few of the CNS isolates carried clfA, cna, and fnbA. Regarding toxin genes, all S. aureus isolates harbored hlb, and most of them were hlg positive. The lukE-lukD, lukM, sec, sed, sei, sen, seo, tst, seg, seh, and sej were also detected with low frequencies. However, no toxin genes were observed in CNS isolates. This study reveals high species diversity of staphylococci from clinical bovine mastitis in Ningxia Hui Autonomous Region of China. The findings for the genetic determinants of antimicrobial resistance and virulence factor provide valuable information for control and prevention of staphylococcal bovine mastitis.
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Affiliation(s)
- Feng Yang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Science, Lanzhou, Gansu, China
| | - Wenli Shi
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Na Meng
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Yiyu Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Xuezhi Ding
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Science, Lanzhou, Gansu, China
| | - Qinfan Li
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
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Meng N, Wu J, Chen J, Luo Y, Xu L, Li X. Basement membrane regeneration and TGF-β1 expression in rabbits with corneal perforating injury. Mol Vis 2023; 29:58-67. [PMID: 37287643 PMCID: PMC10243679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 05/18/2023] [Indexed: 06/09/2023] Open
Abstract
Purpose To evaluate the relationship between basement membrane (BM) regeneration and the spatiotemporal expression of TGF-β1 during wound healing in rabbits with corneal perforating injury. Methods Forty-two rabbits were randomly allocated into 7 experimental groups, with 6 rabbits per group at each time point. The central cornea of the left eye was injured with 2.0 mm trephine to establish the perforating injury model. Six rabbits that received no treatment were used as controls. The cornea was evaluated at 3 days, 1-3 weeks, and 1-3 months after injury with a slit lamp for haze levels. Real-time quantitative polymerase chain reaction (qRT-PCR) was performed to quantify the relative expression of TGF-β1 and α-SMA mRNA. Immunofluorescence (IF) was used to assess TGF-β1 and alpha-smooth actin (α-SMA) expression and localization. BM regeneration was assessed using transmission electron microscopy (TEM). Results After injury, dense haze appeared at 1 month and then gradually faded. The relative expression of TGF-β1 mRNA peaked at 1 week and then decreased until 2 months. The relative α-SMA mRNA expression reached its peak at 1 week, then reached a small peak again at 1 month. IF results showed that TGF-β1 was initially detected in the fibrin clot at 3 days and then in the entire repairing stroma at 1 week. TGF-β1 localization gradually diminished from the anterior region to the posterior region at 2 weeks to 1 month, and it was nearly absent at 2 months. The myofibroblast marker α-SMA was observed in the entire healing stroma at 2 weeks. Localization of α-SMA gradually disappeared from the anterior region at 3 weeks to 1 month, remaining only in the posterior region at 2 months and disappearing at 3 months. Defective epithelial basement membrane (EBM) was first detected at 3 weeks after injury, then gradually repaired, and was nearly regenerated at 3 months. A thin and uneven Descemet's membrane (DM) was initially detected at 2 months after injury, then gradually regenerated to some extent, but remained abnormal at 3 months. Conclusions In the rabbit corneal perforating injury model, EBM regeneration was observed earlier than DM. At 3 months, complete EBM regeneration was observed, while the regenerated DM was still defective. TGF-β1 was distributed throughout the entire wound area in the early stages and then decreased from the anterior to the posterior region. α-SMA exhibited a similar temporospatial expression to TGF-β1. EBM regeneration may play a key role in low expression of TGF-β1 and α-SMA in the anterior stroma. Meanwhile, incomplete DM regeneration may contribute to the sustained expression of TGF-β1 and α-SMA in the posterior stroma.
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Affiliation(s)
- Na Meng
- Department of Ophthalmology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jinling Wu
- Department of Ophthalmology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jingjing Chen
- Department of Ophthalmology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yuqing Luo
- Department of Ophthalmology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Luxing Xu
- Department of Ophthalmology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Xia Li
- Department of Ophthalmology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
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Meng N, Yang H, Chen J, Qin Y, Lei Y, Huang Z, Tang G. [Honokiol reduces oxidative stress by activating the SIRT3-MnSOD2 pathway to alleviate hypertriglyceridemia-induced acute pancreatitis in rats]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:405-411. [PMID: 37087585 PMCID: PMC10122730 DOI: 10.12122/j.issn.1673-4254.2023.03.10] [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: 04/24/2023]
Abstract
OBJECTIVE To determine how honokiol affects the sirtuin-3 (SIRT3)-MnSOD2 pathway and oxidative stress in rats with hypertriglyceridemia-induced acute pancreatitis (HTGP). METHODS Thirty 4-week-old male SD rats were randomly divided into two groups for normal feeding and high-fat feeding for 4 weeks, after which the rats with normal feeding were randomized into control group and acute pancreatitis (AP) group (n=6), and those with high-fat feeding were divided into hypertriglyceridemia group, HTGP group, and honokiol treatment group (n=6). In AP, HTGP, and honokiol groups, AP models were established by intraperitoneal injection of cerulean; in honokiol group, the rats received an intraperitoneal injection of 5 mg/kg honokiol 15 min after cerulean injection. Serum TG, IL-6, and TNF-α levels were measured 24 h after the treatments, and pathological changes in the pancreas were observed with HE staining; The levels of reactive oxygen species (ROS), malondialdehyde (MDA), and glutathione peroxidase (GSH) were measured, and SIRT3 and manganese superoxide dismutase (MnSOD2) expressions were detected using Western blotting and immunohistochemistry. Transmission electron microscopy was used to examine the ultrastructure of pancreatic acinar cells and mitochondria. RESULTS Compared with the those with normal feeding, the rats with high-fat feeding had significantly elevated serum TG level (P < 0.05). The rat models of AP showed significantly increased serum levels of IL-6, TNF-α, and MDA and decreased GSH level and expressions of SIRT3 and MnSOD2, with obvious edema and inflammatory cell infiltration and enhanced ROS fluorescence intensity in the pancreas and ultrastructural damages of the acinar cells and mitochondria. In rats with HTGP, honokiol treatment significantly decreased serum levels of IL-6, TNF-α, and MDA, increased GSH level and SIRT3 and MnSOD2 expressions, reduced ROS production, and alleviated ultrastructural damage of the acinar cells and mitochondria in the pancreas. CONCLUSION Honokiol reduce oxidative stress and alleviates pancreatic injuries in HTGP rats possibly by activating the SIRT3-MnSOD2 pathway.
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Affiliation(s)
- N Meng
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - H Yang
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - J Chen
- Endoscopy Center, Tumor Hospital of Guangxi Medical University, Nanning 530021, China
| | - Y Qin
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Y Lei
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Z Huang
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - G Tang
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
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Wang H, Huang X, Liang H, Sun X, Meng N, Zhou N. Synthesis and Characterization of Polydopamine‐Modified Montmorillonite Loaded with Silver Nanoparticles for Antibacterial Functionalization. ChemistrySelect 2023. [DOI: 10.1002/slct.202204371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Affiliation(s)
- Huiyan Wang
- School of Food Science and Pharmaceutical Engineering Nanjing Normal University Nanjing 210046 China
| | - Xinrong Huang
- School of Food Science and Pharmaceutical Engineering Nanjing Normal University Nanjing 210046 China
| | - Han Liang
- School of Food Science and Pharmaceutical Engineering Nanjing Normal University Nanjing 210046 China
| | - Xuemei Sun
- School of Food Science and Pharmaceutical Engineering Nanjing Normal University Nanjing 210046 China
| | - Na Meng
- School of Food Science and Pharmaceutical Engineering Nanjing Normal University Nanjing 210046 China
| | - Ninglin Zhou
- Jiangsu Collaborative Innovation Center for Biological Functional Materials, College of Chemistry and Materials Science Nanjing Normal University Nanjing 210023 China
- Jiangsu Key Laboratory of Biofunctional Materials Jiangsu Engineering Research Center for Biomedical Function Materials Nanjing 210023 China
- Nanjing Zhou Ninglin Advanced Materials Technology Company Limited Nanjing 211505 China
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Meng N, Pan P, Hu S, Miao C, Hu Y, Wang F, Zhang J, An L. The molecular mechanism of γ-aminobutyric acid against AD: the role of CEBPα/circAPLP2/miR-671-5p in regulating CNTN1/2 expression. Food Funct 2023; 14:2082-2095. [PMID: 36734072 DOI: 10.1039/d2fo03049g] [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: 01/27/2023]
Abstract
The expression levels of the synaptic-related proteins contactin 1/2 (CNTN1/2) are down-regulated in the brain of Alzheimer's disease (AD), but the mechanism has not been clarified. γ-Aminobutyric acid (GABA) is considered a biologically active ingredient in food. Our previous research revealed that GABA can regulate CEBPα expression in Aβ-treated U251 cells. However, it is uncertain whether GABA can antagonize the pathogenesis of AD. Whether GABA can inhibit the reduction in CNTN1/2 expression by regulating CEBPα/circAPLP2/miR-671-5p in the AD brain remains unclear yet. Here, we demonstrate that GABA could attenuate the deposition of Aβ in the brain and ameliorate cognitive impairments in AD model mice. The expressions of CEBPα, circAPLP2, and CNTN1/2 were decreased and that of miR-671-5p was increased in AD model mouse brains and Aβ-induced SH-SY5Y cells. These alterations were partly reversed by GABA. The CNTN1/2 expression was down-regulated and up-regulated in SH-SY5Y cells treated with miR-671-5p mimics and miR-671-5p inhibitors, respectively. The results from the luciferase reporter assay revealed that miR-671-5p could bind to the 3'-untranslated region of circAPLP2. The silencing of circAPLP2 with the siRNA duplex caused an up-regulation of miR-671-5p and a down-regulation of CNTN1/2 in SH-SY5Y cells. The silencing of CEBPα with the siRNA duplex caused a down-regulation of circAPLP2 or CNTN1/2 and an up-regulation of miR-671-5p. In conclusion, GABA may decrease the deposition of Aβ in the brain, inhibit the down-regulation of CNTN1/2 expression, and ameliorate the cognitive deficits of AD model mice. The CEBPα/circAPLP2/miR-671-5p pathway plays a role in regulating CNTN1/2 expression by GABA in AD.
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Affiliation(s)
- Na Meng
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China.
| | - Pengyu Pan
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China.
| | - Shuang Hu
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China.
| | - Chen Miao
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China.
| | - Yixin Hu
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China.
| | - Fangfang Wang
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China.
| | - Jingzhu Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China.
| | - Li An
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China.
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Sun X, Shiraz H, Wong R, Zhang J, Liu J, Lu J, Meng N. Enhancing the Performance of PVDF/GO Ultrafiltration Membrane via Improving the Dispersion of GO with Homogeniser. Membranes (Basel) 2022; 12:1268. [PMID: 36557175 PMCID: PMC9782047 DOI: 10.3390/membranes12121268] [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] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/05/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
In this study, PVDF/GO-h composite membranes were synthesised using a homogeniser to improve the dispersion of GO nanosheets within the composite membrane's structure, and then characterised and contrasted to PVDF/GO-s control samples, which were synthesised via traditional blending method-implementing a magnetic stirrer. By characterizing membrane via X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), water contact angle (WCA) and membrane performance. SEM results showed that the number of the finger-like structure channels and pores in the sponge like structure of PVDF/GO-h composite membranes become more compared with PVDF/GO-s membranes. Water contact angle tests showed that the PVDF/GO-h composite membranes have lower contact angle than PVDF/GO-s control, which indicated the PVDF/GO-h composite membranes are more hydrophilic. Results also showed that composite membranes blended using homogeniser exhibited both improved water flux and rejection of target pollutants. In summary, it was shown that the performance of composite membranes could be improved significantly via homogenisation during synthesis, thus outlining the importance of further research into proper mixing.
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Affiliation(s)
- Xin Sun
- School of Environmental Engineering, Xuzhou University of Technology, Xuzhou 221018, China
| | - Hana Shiraz
- Department of Chemical Engineering, Monash University, Melbourne, VIC 3800, Australia
| | - Riccardo Wong
- Department of Chemical Engineering, Monash University, Melbourne, VIC 3800, Australia
| | - Jingtong Zhang
- School of Environmental Engineering, Xuzhou University of Technology, Xuzhou 221018, China
| | - Jinxin Liu
- School of Environmental Engineering, Xuzhou University of Technology, Xuzhou 221018, China
| | - Jun Lu
- School of Environmental Engineering, Xuzhou University of Technology, Xuzhou 221018, China
| | - Na Meng
- School of Environmental Engineering, Xuzhou University of Technology, Xuzhou 221018, China
- Department of Chemical Engineering, Monash University, Melbourne, VIC 3800, Australia
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Meng N, Zhao P, Zhou W, Yan J, Hu D, Fang Y, Lu J, Liu Q. Study on Spacing Regulation and Separation Performance of Nanofiltration Membranes of GO. Membranes (Basel) 2022; 12:803. [PMID: 36005718 PMCID: PMC9414754 DOI: 10.3390/membranes12080803] [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] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 08/14/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
Graphene oxide (GO) membranes have attracted significant attention in the field of water processing in recent years due to their unique characteristics. However, few reports focus on both membrane stability and the “trade-off” effect. In this study, a series of aliphatic diamines (1, 2-ethylenediamine, 1, 4-butanediamine, and 1, 6-hexamethylenediamine) of covalent crosslinked GO were used to prepare diamine-modified nanofiltration membranes, BPPO/AX-GO, with adjustable layer spacing using the vacuum extraction−filtration method. Moreover, Ax-GO-modified nanofiltration membranes modified with adipose diamine had higher layer spacing, lower mass-transfer resistance, and better stability. When the number of carbon atoms was 5, the best layer spacing was reached, and when the number of carbon atoms was greater than 4, the modified membrane nanosheets more easily accumulated. With the increase in layer spacing, the water flux of the composite film increased to 26.27 L/m2·h·bar. Meanwhile, adipose diamine crosslinking significantly improved the stability of GO films. The interception sequence of different valence salts in the composite membrane was NaCl > Na2SO4 > MgSO4, and the rejection rate of bivalent salts was higher than that of monovalent salts. The results can provide some experimental basis and research ideas for overcoming the “trade-off” effect of a lamellar GO membrane.
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Huang X, Ge M, Wang H, Liang H, Meng N, Zhou N. Functional modification of polydimethylsiloxane nanocomposite with silver nanoparticles-based montmorillonite for antibacterial applications. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128666] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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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Jiao L, Meng N, Wang Z, Schwieter JW, Liu C. Partially shared neural mechanisms of language control and executive control in bilinguals: Meta-analytic comparisons of language and task switching studies. Neuropsychologia 2022; 172:108273. [DOI: 10.1016/j.neuropsychologia.2022.108273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 05/15/2022] [Accepted: 05/17/2022] [Indexed: 01/28/2023]
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Lin Y, Wang C, Miao D, Cheng N, Meng N, Babar AA, Wang X, Ding B, Yu J. A Trilayered Composite Fabric with Directional Water Transport and Resistance to Blood Penetration for Medical Protective Clothing. ACS Appl Mater Interfaces 2022; 14:18944-18953. [PMID: 35412798 DOI: 10.1021/acsami.2c03136] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Functional textiles with enhanced moisture management can facilitate sweat transport away from the skin to improve personal comfort. However, porous materials exhibit low capability of preventing the intrusion of external liquids, becoming a bottleneck in the design of medical protective clothing. Herein, a trilayered composite fabric based on a gradient wettability structure is demonstrated for directional water transport and resistance to blood penetration. The proposed fabric shows distinct advantages, including a high water breakthrough pressure of 2.43 kPa from the external side, an outstanding positive water transport index (1522%), and an antiblood penetration resistance of 2.71 kPa. Moreover, the fabric shows improved comfort with a high moisture transmission (320 g m-2 h-1) and desired water evaporation rate (0.36 g h-1). This work addressed the concern of directional water transport and resistance to blood penetration while providing a comfortable wearing microenvironment, leading to a promising research direction for multifunctional medical textiles.
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Affiliation(s)
- Yanyan Lin
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Chao Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Dongyang Miao
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Ningbo Cheng
- College of Fashion and Design, Donghua University, Shanghai 200051, China
| | - Na Meng
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Aijaz Ahmed Babar
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Xianfeng Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
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Meng N, Sun Y, Liu L, Yao D, Gao H, Ma Y, Jin Y, Dong Y, Zhu T, Tian Y. [Clinical features of 86 cases of acute diquat poisoning]. Zhonghua Wei Zhong Bing Ji Jiu Yi Xue 2022; 34:301-305. [PMID: 35574750 DOI: 10.3760/cma.j.cn121430-20220128-00105] [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 explore the clinical features of acute diquat (DQ) poisoning, and further improve the awareness of acute DQ poisoning. METHODS A retrospective analysis was performed on the clinical data of patients with acute DQ poisoning diagnosed in the emergency department of the Second Hospital of Hebei Medical University from January 1, 2019 to December 31, 2021. The clinical data included age, gender, exposure routes, presence of pesticides (drugs) mixture poisoning, dosage of poison, the time from taking poisoning to admitting in the emergency department, clinical manifestations, laboratory data, treatment, hospital days, prognosis and survival days. RESULTS The number of cases who firstly complained of acute DQ poisoning in the past three years were 19 cases in 2019, 28 cases in 2020, and 51 cases in 2021. A total of 12 patients were excluded due to being diagnosed paraquat (PQ) poisoning by toxicology detection. Finally, 86 cases of acute DQ poisoning were included, including 80 cases of oral DQ poisoning, 1 case of intramuscular injection, 1 case of binocular contact and 4 cases of dermal exposure. In 80 cases of oral DQ poisoning, there were 70 cases of diquat poisoning alone (42 cases survived, 28 cases died) and 10 cases of pesticide mixture poisoning (6 cases survived, 4 cases died). The time from oral poisoning to admitting in the emergency department was 0.5-96.0 hours, with an average of (8.6±5.8) hours. The time of intramuscular injection poisoning to admitting in the emergency department was 3 hours. The time of dermal exposure to admitting in the emergency department was relatively long, with an average of 66.1 hours. The time from oral simple DQ poisoning to death was 12.0-108.0 hours, and the time from oral mixed DQ poisoning to death was 24.0-576.0 hours. A total of 70 patients with oral diquat poisoning alone presented various degrees of multiple organ injuries. All patients presented gastrointestinal symptoms such as nausea and vomiting. Renal injury and central nervous system injury were the most significant and closely related to the prognosis. CONCLUSIONS Acute oral DQ poisoning can cause to multiple organ injuries, and the clinical manifestations are related to the dose of the poison. In severe cases, acute renal failure and refractory circulatory failure occur within 24 hours after poisoning, and severe central nervous system injury with disturbance of consciousness as the primary manifestation occurs within 36 hours, followed by multiple organ failure until death.
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Affiliation(s)
- Na Meng
- Department of Emergency Medicine, the Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, China. Corresponding author: Tian Yingping,
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Wang C, Meng N, Babar AA, Gong X, Liu G, Wang X, Yu J, Ding B. Highly Transparent Nanofibrous Membranes Used as Transparent Masks for Efficient PM 0.3 Removal. ACS Nano 2022; 16:119-128. [PMID: 34870426 DOI: 10.1021/acsnano.1c09055] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Currently, the quest for highly transparent and flexible fibrous membranes with robust mechanical characteristics, high breathability, and good filtration performance is rapidly rising because of their potential use in the fields of electronics, energy, environment, medical, and health. However, it is still an extremely challenging task to realize transparent fibrous membranes due to serious surface light reflection and internal light scattering. Here, we report the design and development of a simple and effective topological structure to create porous, breathable, and high visible light transmitting fibrous membranes (HLTFMs). The resultant HLTFMs exhibit good optical performance (up to 90% transmittance) and high porosities (>80%). The formation of such useful structure with high light transmittance has been revealed by electric field simulation, and the mechanism of fibrous membrane structure to achieve high light transmittance has been proposed. Moreover, transparent masks have been prepared to evaluate the filtration performance and analyze their feasibility to meet requirement of facial recognition systems. The prepared masks display high transparency (>80%), low pressure drop (<100 Pa) and high filtration efficiency (>90%). Furthermore, the person wearing this mask can be successfully identified by facial recognition systems. Therefore, this work provides an idea for the development of transparent, breathable, and high-performance fibrous membranes.
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Affiliation(s)
- Chao Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Na Meng
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Aijaz Ahmed Babar
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Xiaobao Gong
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Gaohui Liu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Xianfeng Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 200051, China
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Yan KW, Tian XF, Meng N, Liu WZ, Lu ZM, Guo MT, Xiao B. Flexible ureteroscopy with ultrasound guidance for the treatment of parapelvic renal cysts: A complementary approach for locating the cystic wall. BMC Urol 2022; 22:7. [PMID: 35073883 PMCID: PMC8785450 DOI: 10.1186/s12894-022-00960-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 01/18/2022] [Indexed: 12/26/2022] Open
Abstract
Background Flexible ureteroscopic incision and drainage is a relatively new surgical method for treating parapelvic cysts. Considering that the intraoperative localization of the cyst may fail with a flexible ureteroscope, we use an innovative ultrasound-guided method to locate the cystic wall during flexible ureteroscopic surgery. Methods We retrospectively reviewed 17 consecutive cases of parapelvic renal cysts treated by ultrasound-guided flexible ureteroscopy between March 2017 and May 2020. The differences between the simple flexible ureteroscopic technique and ultrasound-guided flexible ureteroscopic technique were compared. The surgical procedures, postoperative complications, results and patient follow-ups were evaluated. Results The cyst wall was seen clearly in 10 patients with ureteroscopic vision. Another 7 patients underwent ultrasound-guided flexible ureteroscopic surgery since it was difficult to identify the cyst wall. The mean operative time was 25.9 ± 8.7 min and 37.1 ± 10.1 min for the conventional and modified techniques, respectively (P = 0.004); the mean time to search for cysts was 17.6 ± 5.8 min and 26.5 ± 8.4 min, respectively (P = 0.002); and the mean incision time was 7.1 ± 4.9 min and 12.1 ± 5.6 min, respectively (P = 0.000). All of the patients were followed-up for 12 months, and no serious complications or recurrence were observed. Conclusions We demonstrated that it is feasible and safe to treat parapelvic renal cysts by ultrasound-guided flexible ureteroscopic incision and drainage. The small sample size and need for further studies were the limitations of our work. Supplementary Information The online version contains supplementary material available at 10.1186/s12894-022-00960-6.
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Lv Y, Cui H, Meng N, Yue H, Wei W. Recent advances in the application of sulfinic acids for the construction of sulfur-containing compounds. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.06.068] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Chu X, Zhang P, Liu Y, Sun B, Huang X, Zhou N, Shen J, Meng N. Multifunctional Carbon Dots-Based Nanoplatform for Bioimaging and Quaternary Ammonium Salt/Photothermal Synergistic Antibacterial. J Mater Chem B 2022; 10:2865-2874. [DOI: 10.1039/d1tb02717d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The emergence of drug resistance and superbugs poses a devastating threat to public health, even lead to death. Thus, it is significant to develop a novel antibacterial agent to combat...
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Yu J, Qin C, Huang S, Ye X, Meng N. TREATMENT OF GIANT JUVENILE BREAST FIBROADENOMA BY SINGLE HOLE BREAST ENDOSCOPY: A CASE REPORT. Acta Endocrinol (Buchar) 2021; 17:552-553. [PMID: 35747870 PMCID: PMC9206158 DOI: 10.4183/aeb.2021.552] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
| | | | | | | | - N. Meng
- Correspondence to: Ning Meng MD, Hangzhou Normal University Affiliated Hospital, Department of Thyroid and Breast Surgery, No. 126 Wenzhou Road, Gongshu District, Hangzhou, Zhejiang, 310015, China, E-mail:
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Zhang Y, Meng N, Babar AA, Wang X, Yu J, Ding B. Multi-bioinspired and Multistructural Integrated Patterned Nanofibrous Surface for Spontaneous and Efficient Fog Collection. Nano Lett 2021; 21:7806-7814. [PMID: 34463511 DOI: 10.1021/acs.nanolett.1c02788] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Harvesting water from untapped fog is a potential and sustainable solution to freshwater shortages. However, designing high-efficiency fog collectors is still a critical and challenging task. Herein, learning from the unique microstructures and functionalities of the Namib desert beetle, honeycomb, and pitcher plant, we present a multi-bioinspired patterned fog collector with hydrophilic nanofibrous bumps and a hydrophobic slippery substrate for spontaneous and efficient fog collection. Interestingly, hydrophilic nanofibrous bumps display a honeycomb-like cellular grid structure self-assembled from electrospun nanofibers. Notably, the patterned nanofibrous fog collector exhibits superior water-collecting efficiency of 1111 mg cm-2 h-1. The hydrophilic nanofibrous bumps increase the effective fog-collecting area, and the hydrophobic slippery substrate promotes quick transport of collected water in the desired direction reducing the secondary water evaporation, finally achieving rapid directional transport of tiny droplets and high-efficiency water collection. This work opens a new avenue to collect water efficiently and provides clues to research on the multi-bioinspired synergistical optimization strategy.
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Affiliation(s)
- Yufei Zhang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Na Meng
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Aijaz Ahmed Babar
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Xianfeng Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
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Chen J, Meng N, Cao B, Ye Y, Ou Y, Li Z. Transitory restless arms syndrome in a patient with antipsychotics and antidepressants: a case report. BMC Psychiatry 2021; 21:453. [PMID: 34530775 PMCID: PMC8447733 DOI: 10.1186/s12888-021-03433-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 08/19/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Restless arms syndrome (RAS) is characterized by uncomfortable aching or burning sensations in the arms. RAS is regarded as an upper limb variant of restless legs syndrome (RLS). The lack of specific diagnostic criteria makes it difficult to recognize the RAS. Therefore, RAS is usually neglected in clinical practice. Moreover, when a patient was diagnosed with RAS, the adjustment of medications was the first choice for doctors, which may make the patient's condition unstable. CASE PRESENTATION A 33-year-old woman was diagnosed with schizophrenia and major depressive disorder. Starting with 0.6 g/d amisulpride, 0.1 g/d quetiapine, 75 mg/d venlafaxine sustained-release tablets, the patient reported symptoms of RAS (itching arms) on the fourth day since the latest hospitalization. After ruling out other factors, her RAS was suspected to be induced by antidepressants or antipsychotics. Without medication adjustment, RAS spontaneously remitted. CONCLUSIONS This case suggests that psychiatrists should pay attention to RAS when using antipsychotics and/or antidepressants. Moreover, RAS may be transitory. When a patient manifests RAS, observation may be one choice instead of an immediate medication adjustment.
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Affiliation(s)
- Juan Chen
- Mental Health Center, West China Hospital/West China School of Nursing, Sichuan University, Chengdu, China
| | - Na Meng
- Mental Health Center, West China Hospital/West China School of Nursing, Sichuan University, Chengdu, China
| | - Bingrong Cao
- Mental Health Center, West China Hospital/West China School of Nursing, Sichuan University, Chengdu, China
| | - Yinghua Ye
- Mental Health Center, West China Hospital/West China School of Nursing, Sichuan University, Chengdu, China
| | - Ying Ou
- Mental Health Center, West China Hospital/West China School of Nursing, Sichuan University, Chengdu, China
| | - Zhe Li
- Mental Health Center, West China Hospital, Sichuan University, No.28 Dianxin South Road, Chengdu, 610041, China.
- Sichuan Clinical Medical Research Center for Mental Disorders, Chengdu, China.
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Zhang Y, Meng N, Babar AA, Wang X, Yu J, Ding B. Lizard-Skin-Inspired Nanofibrous Capillary Network Combined with a Slippery Surface for Efficient Fog Collection. ACS Appl Mater Interfaces 2021; 13:36587-36594. [PMID: 34311547 DOI: 10.1021/acsami.1c10067] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Freshwater shortage is a critical global issue that needs to be resolved urgently. Efficient water collection from fog provides a promising and sustainable solution to produce clean drinking water, especially in the desert and arid regions. Nature has long served as our best source of inspiration for designing new structures and developing new materials. Herein, we report a strategy to design a novel Janus fog collector with a hydrophilic lizard-skin-like nanofibrous network upper surface and hydrophobic slippery lower surface using a simple and feasible method of coating and electrospinning. We analyze the forming law of the lizard-skin-like nanofibrous network structure on different substrates using electric field simulation. The resulting copper mesh-based Janus fog collector exhibits superior water-collecting efficiency (907 mg cm-2 h-1) and long-term durability, achieving directional transport of tiny droplets and high-efficiency water collection. However, there are few reports on the combination of the lizard-skin-like nanofibrous capillary network and slippery surface for efficient fog collection. Therefore, we believe that this work will open a new avenue to collect water efficiently and also provide clues to research on the lizard-skin-like nanofibrous network structure.
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Affiliation(s)
- Yufei Zhang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Na Meng
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Aijaz Ahmed Babar
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
- Textile Engineering Department, Mehran University or Engineering and Technology, Jamshoro 76060, Pakistan
| | - Xianfeng Wang
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Bin Ding
- Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
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Guo Q, Meng N, Fan G, Sun D, Meng Y, Luo G, Liu Y. The role of the exocytic pathway in cell wall assembly in yeast. Yeast 2021; 38:566-578. [PMID: 34250641 DOI: 10.1002/yea.3659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 06/29/2021] [Accepted: 07/01/2021] [Indexed: 11/09/2022] Open
Abstract
The cell wall is a dynamic organelle which is tightly controlled for cell morphology, viability, and pathogenesis. It was previously shown that exocytosis is involved in the secretion of some components and enzymes of the cell wall. However, how the secretory pathway affects the cell wall integrity and assembly remains unclear. Here we show that the secretory pathway mutant (sec) cells were sensitive to cell wall antagonists in Saccharomyces cerevisiae, and they were lysed at restrictive conditions but can be rescued by osmotic stabilizers, indicating their cell walls were disrupted. Although glucans were reduced at the cell surface in sec mutants as speculated, the other two main cell wall components, chitins, and mannoproteins, were accumulated at the cell surface. We also found that both the protein level and the phosphorylation level of Slt2 increased in sec mutants. These results suggest that the exocytic pathway has a critical role in cell wall assembly. Our study will help to understand the mechanism of cell wall formation.
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Affiliation(s)
- Qingguo Guo
- Institute of Translational Medicine, China Medical University, Shenyang, China.,Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, China
| | - Na Meng
- Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, China
| | - Guanzhi Fan
- Institute of Translational Medicine, China Medical University, Shenyang, China
| | - Dong Sun
- Institute of Translational Medicine, China Medical University, Shenyang, China
| | - Yuan Meng
- Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, China
| | - Guangzuo Luo
- Institute of Translational Medicine, China Medical University, Shenyang, China
| | - Ying Liu
- Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, China
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Guo N, Zhou LX, Meng N, Shi YP. Associations of oral and intestinal florae and serum inflammatory factors with pathogenesis of oral cancer. Eur Rev Med Pharmacol Sci 2021; 24:11090-11095. [PMID: 33215425 DOI: 10.26355/eurrev_202011_23595] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to explore the effects of oral and intestinal florae and serum inflammatory factors on the pathogenesis of oral cancer. PATIENTS AND METHODS Oral cancer patients and healthy subjects in our hospital were enrolled in disease group (n=50) and control group (n=50), respectively. Oral flora of subjects was collected using the sterile cotton swab. Microbial deoxyribonucleic acid (DNA) was extracted for Polymerase Chain Reaction (PCR) amplification and sequencing. Subsequently, the feces were also collected from patients, and sent to the company for analysis of microbial composition via sequencing. In addition, the levels of serum inflammatory factors tumor necrosis factor-α (TNF-α), interleukin-8 (IL-8), IL-6, and IL-1β in disease group and control group were detected via enzyme-linked immunosorbent assay (ELISA). RESULTS The number of patients with a history of drinking (p=0.040) and betel nut chewing (p=0.000) in the disease group was larger than that in the control group, and the difference was statistically significant. In terms of oral flora distribution, the ratios of dominant bacteria Staphylococcus and Rothia were 64% and 50% in disease group, which were significantly higher than those in the control group (24% and 18%) (p=0.023 and 0.034). In terms of intestinal flora distribution, the abundance of intestinal florae (Flavobacteriaceae, Sphingobacteriales, Rikenella, Pseudomonadales, Tetragenococcus and Acinetobacter) in the disease group was remarkably higher than that in the control group (p<0.05). However, the abundance of Vagococcus and Pediococcus in control group was significantly higher than that in the disease group (p<0.05). Among intestinal flora, Firmicutes exhibited a highly positive correlation with Bacteroides (r=0.341, p=0.023), and a highly negative correlation with Ruminococcus (r=-0.832, p=0.000). Bacteroides had a highly negative correlation with Lactobacillus (r=-0.763, p=0.000) and Enterococcus (r=-0.461, p=0.000). In disease group, the levels of TNF-α (p=0.021), IL-8 (p=0.000), and IL-1β (p=0.000) were evidently higher than those in the control group [(23.51±2.14) ng/L vs. (12.34±2.45) ng/L, (89.75±4.29) ng/L vs. (43.23±3.25) ng/L, (42.25±3.25) ng/L vs. (15.32±1.47) ng/L]. However, there was no statistically significant difference in IL-6 level between the two groups (p=0.217). CONCLUSIONS Oral and intestinal florae and serum inflammatory factors are associated with the pathogenesis of oral cancer.
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Affiliation(s)
- N Guo
- Department of Dental, Liaocheng People's Hospital, Liaocheng, China.
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36
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Wang M, Wang Y, Meng N, Li X. The factors of patient-reported readiness for hospital discharge in patients with depression: A cross-sectional study. J Psychiatr Ment Health Nurs 2021; 28:409-421. [PMID: 32981173 DOI: 10.1111/jpm.12693] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 07/25/2020] [Accepted: 09/09/2020] [Indexed: 02/05/2023]
Abstract
WHAT IS KNOWN ON THE SUBJECT?: The attributes of readiness for hospital discharge (RHD) have been identified to be physical stability, adequate support, psychological ability, and adequate information and knowledge. Patient-reported RHD has been regarded as an outcome indicator, and poor RHD leads to unplanned readmission, emergency department visits and even death. Knowledge regarding patient-reported RHD and its factors among patients with depression is limited. WHAT THE PAPER ADDS TO EXISTING KNOWLEDGE?: RHD among patients with depression is at a moderate level. More than a quarter of people with depression had low RHD. The knowledge dimension of the RHDS among patients with depression should be further strengthened. The length of stay, content received and delivery dimensions of the QDTS were significantly associated with RHD. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: This study encourages nurses to assess patient-reported RHD at discharge in mental health settings. Nurses should pay more attention to patients with hospital stays longer than 20 days. Nurses could improve RHD by enhancing the quality of discharge teaching, particularly the content received and the skills nurses used to deliver such content. Nurses' managers could develop programmes to improve teaching skills via Internet technology, such as simulated patients and online interprofessional discharge planning. ABSTRACT: Introduction Low readiness for hospital discharge (RHD) can be followed by negative healthcare outcomes. However, no studies have investigated RHD among patients with depression. Aim This study aimed to examine patient-reported RHD and its factors among patients with depression. Method In total, 367 inpatients with depression were recruited and completed the Readiness for Hospital Discharge Scale (RHDS) and Quality of Discharge Teaching Scale (QDTS). A binary logistic regression analysis was performed to explore the factors of RHD among patients with depression. Results The total RHDS score was 7.70 ± 1.52. Approximately 28.9% of the participants had low RHD (RHDS score < 7). The results revealed that RHD was significantly associated with the length of stay, content received and delivery. Discussion RHD among patients with depression is at a moderate level. More than a quarter of people with depression had low RHD. To improve RHD, enhancing the quality of discharge teaching is imperative for patients with depression. Implications for Practice Nurses should pay more attention to patients with a hospital stay longer than 20 days. Nurses could improve RHD by enhancing the quality of discharge teaching, particularly the content received and the skills nurses used to deliver such content.
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Affiliation(s)
- Mengmeng Wang
- West China School of Nursing, Sichuan University/West China Hospital, Sichuan University, Chengdu, China
| | - Ya Wang
- Department of Nursing, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, China
| | - Na Meng
- Mental Health Center, West China Hospital, Sichuan University/ West China School of Nursing, Sichuan University, Chengdu, China
| | - Xiaolin Li
- West China School of Nursing, Sichuan University/West China Hospital, Sichuan University, Chengdu, China
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Meng Y, Lu H, Wang C, Wang Y, Meng N, Yang K, Jie Y, Zhang L. Naso-ocular neuropeptide interactions in allergic rhinoconjunctivitis, rhinitis, and conjunctivitis. World Allergy Organ J 2021; 14:100540. [PMID: 34035875 PMCID: PMC8131918 DOI: 10.1016/j.waojou.2021.100540] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/25/2021] [Accepted: 04/01/2021] [Indexed: 01/22/2023] Open
Abstract
Background Ocular as well as nasal symptoms contribute to allergic response but remain poorly characterized. The aim of this study was to analyze the levels of substance P (SP), vasoactive intestinal peptide (VIP), and calcitonin gene-related peptide (CGRP) in tears and nasal secretions of patients with allergic rhinoconjunctivitis (ARC), allergic rhinitis, and allergic conjunctivitis, while exploring possible mechanisms of naso-ocular interactions. Methods A total of 21 patients with ARC, 17 with allergic rhinitis, 13 with allergic conjunctivitis, and 15 healthy controls were enrolled in the study. Nasal secretions and tears were collected. Patient demographics and clinical characteristics were recorded and levels of substance P, VIP, and CGRP were measured. Results SP levels in nasal secretions and tears were significantly higher in the ARC, AR, and AC groups. Similar results were obtained for VIP levels. CGRP levels in tears were also significantly higher in the 3 patient groups. The level of SP was significantly higher in the nasal secretions than in the tears of the ARC, AR, and AC patient groups. The level of VIP was significantly higher in the nasal secretions than in the tears in the ARC and AR groups. The level of CGRP was significantly higher in the nasal secretions than in the tears in the ARC and AC groups. Finally, both of the nasal and tear levels of SP and VIP but not CGRP were positively correlated with the visual analog scale (VAS) score in the patients with ARC. Conclusion The results of this study suggested that SP, VIP, and CGRP play important roles in the mechanism of ARC and that nasal neurotransmitters and neuropeptides might have more important roles than those of ocular origin.
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Affiliation(s)
- Yifan Meng
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, 100730, China
| | - Hongshuang Lu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Chengshuo Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, 100730, China
| | - Yang Wang
- Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing, 100005, China
| | - Na Meng
- Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing, 100005, China
| | - Ke Yang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Ying Jie
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Luo Zhang
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, 100730, China.,Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing, 100005, China.,Department of Allergy, Beijing TongRen Hospital, Capital Medical University, Beijing, 100730, China
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Liu Z, Mi F, Han M, Tian M, Deng L, Meng N, Luo J, Fu R. Bone marrow-derived mesenchymal stem cells inhibit CD8 + T cell immune responses via PD-1/PD-L1 pathway in multiple myeloma. Clin Exp Immunol 2021; 205:53-62. [PMID: 33735518 DOI: 10.1111/cei.13594] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 05/30/2020] [Revised: 02/03/2021] [Accepted: 02/21/2021] [Indexed: 12/19/2022] Open
Abstract
High expression of the inhibitory receptor programmed cell death ligand 1 (PD-L1) on tumor cells and tumor stromal cells have been found to play a key role in tumor immune evasion in several human malignancies. However, the expression of PD-L1 on bone marrow mesenchymal stem cells (BMSCs) and whether the programmed cell death 1 (PD-1)/PD-L1 signal pathway is involved in the BMSCs versus T cell immune response in multiple myeloma (MM) remains poorly defined. In this study, we explored the expression of PD-L1 on BMSCs from newly diagnosed MM (NDMM) patients and the role of PD-1/PD-L1 pathway in BMSC-mediated regulation of CD8+ T cells. The data showed that the expression of PD-L1 on BMSCs in NDMM patients was significantly increased compared to that in normal controls (NC) (18·81 ± 1·61 versus 2·78± 0·70%; P < 0·001). Furthermore, the PD-1 expression on CD8+ T cells with NDMM patients was significantly higher than that in normal controls (43·22 ± 2·98 versus 20·71 ± 1·08%; P < 0·001). However, there was no significant difference in PD-1 expression of CD4+ T cells and natural killer (NK) cells between the NDMM and NC groups. Additionally, the co-culture assays revealed that BMSCs significantly suppressed CD8+ T cell function. However, the PD-L1 inhibitor effectively reversed BMSC-mediated suppression in CD8+ T cells. We also found that the combination of PD-L1 inhibitor and pomalidomide can further enhance the killing effect of CD8+ T cells on MM cells. In summary, our findings demonstrated that BMSCs in patients with MM may induce apoptosis of CD8+ T cells through the PD-1/PD-L1 axis and inhibit the release of perforin and granzyme B from CD8+ T cells to promote the immune escape of MM.
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Affiliation(s)
- Z Liu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - F Mi
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - M Han
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - M Tian
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - L Deng
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - N Meng
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - J Luo
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - R Fu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
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Meng N, Yu W, Suzuki T, Chen M, Qi Z, Hu B, Bao J, Debenham JS, Mazzola R, Duffy JL. Mild Condition for the Deoxygenation of α-Heteroaryl-Substituted Methanol Derivatives. J Org Chem 2021; 86:5560-5567. [PMID: 33784101 DOI: 10.1021/acs.joc.1c00067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A mild condition via PPh3/I2/imidazole for the deoxygenation of substituted methanol derivatives has been identified. This metal-free process was found to proceed well on secondary or tertiary alcohols substituted with one or two heteroaryl groups, and it tolerates acid-sensitive heterocycles. This condition works for methanol derivatives substituted with 2-pyridyl, 4-pyridyl, or other heterocyclic groups, allowing the negative charge formed during the reaction to resonate to a nitrogen atom. Methanol derivatives substituted with 3-pyridyl or heterocyclic groups that do not allow the negative charge formed during the reaction to resonate to a nitrogen atom will not undergo deoxygenation under this condition.
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Affiliation(s)
- Na Meng
- IDSU, WuXi AppTec Company, Ltd., Shanghai 200131, China
| | - Wensheng Yu
- Merck & Company, Inc., 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Takao Suzuki
- IDSU, WuXi AppTec Company, Ltd., Shanghai 200131, China
| | - Maofen Chen
- IDSU, WuXi AppTec Company, Ltd., Shanghai 200131, China
| | - Zhiqi Qi
- IDSU, WuXi AppTec Company, Ltd., Shanghai 200131, China
| | - Bin Hu
- IDSU, WuXi AppTec Company, Ltd., Shanghai 200131, China
| | - Jianming Bao
- Merck & Company, Inc., 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - John S Debenham
- Merck & Company, Inc., 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Robert Mazzola
- Merck & Company, Inc., 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Joseph L Duffy
- Merck & Company, Inc., 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
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Wang M, Wang Y, Xu J, Meng N, Li X, Liu Z, Huang J. Individual-level socioeconomic status and contact or familiarity with people with mental illness: a cross-sectional study in Wuhou District, Chengdu, Southwest China. BMC Fam Pract 2021; 22:71. [PMID: 33836653 PMCID: PMC8035729 DOI: 10.1186/s12875-021-01422-y] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 03/19/2021] [Indexed: 02/08/2023]
Abstract
Background People with mental illness (PWMI) often suffer from public stigma, which can make them unwilling to seek help and reduce access to early treatment. The aims of this study were to determine attitudes towards PWMI among the general public in a Chinese sample and to explore the relationships with sociodemographic characteristics. Methods A community-based, cross-sectional study was conducted from March to June 2019. The participants’ attitudes towards PWMI were evaluated by the Chinese version of the Social Distance Scale (SDSC). An independent-sample T-test and one-way ANOVA were used to determine the association of categorical variables with the outcome variable. Multiple linear regression and Spearman correlations were computed to explore the correlation between SDSC scores and individual-level socioeconomic status (SES). Results A total of 1437 participants were recruited, and their total SDSC score was 12.53 (SD: 3.11). Univariate analysis results showed that age, education level, educational attainment, and individual-level SES as well as whether they were caregivers/family members of PWMI were correlated with SDSC scores. The results of regression analysis showed a significant effect caused by contact or familiarity with PWMI (B = -1.134, β = -.190, P < 0.001), as well as for individual-level SES (B = -.339, β = -.110, P < 0.001). Spearman correlation results showed that SDSC scores were negatively correlated with individual-level SES (r = -.078, p < 0.01) and contact or familiarity with PWMI (r = -.168, p < 0.001). Conclusion This study reveals that public stigma towards PWMI is common in Southwest China. Individuals who are not a family member or a caregiver of PWMI or have low education level or low individual-level SES need to be provided more anti-stigma interventions. Contacting with PWMI is also a potentially beneficial measure to reduce social distance. Supplementary Information The online version contains supplementary material available at 10.1186/s12875-021-01422-y.
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Affiliation(s)
- Mengmeng Wang
- West China School of Nursing, Sichuan University/Department of Nursing, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ya Wang
- Department of Nursing, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, 610041, China
| | - Jiajun Xu
- Mental Health Center, West China Hospital, Sichuan University, Guoxuexiang No.37, Chengdu, 610041, Sichuan, China.
| | - Na Meng
- Mental Health Center, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, 610041, China
| | - Xiaolin Li
- West China School of Nursing, Sichuan University/Department of Nursing, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zheng Liu
- Department of Nursing, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, 610041, China
| | - Junqiang Huang
- Chengdu Dekang Hospital, Sichuan University, Chengdu, 610041, China
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Meng N, Liu Z, Wang Y, Feng Y, Liu Q, Huang J, Li X. Beyond Sociodemographic and COVID-19-Related Factors: The Association Between the Need for Psychological and Information Support from School and Anxiety and Depression. Med Sci Monit 2021; 27:e929280. [PMID: 33824264 PMCID: PMC8040519 DOI: 10.12659/msm.929280] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 02/23/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND In addition to sociodemographic and COVID-19- related factors, the needs of school support, including material, psychological and information support, have seldom been discussed as factors influencing anxiety and depression among college students during the COVID-19 pandemic. MATERIAL AND METHODS In this cross-sectional study, 3351 college students from China were surveyed through questionnaires about their sociodemographic and COVID-19 characteristics, the needs of school support, and their experiences with anxiety and depression. RESULTS Anxiety and depression were reported by 6.88% and 10.50% of students, respectively. Married, higher education, non-medical, and urban students had significantly higher risks of anxiety or depression. Additionally, symptoms such as cough and fever, especially when following a possible contact with suspected individuals, quarantine history of a personal contact, going out 1-3 times a week, not wearing a mask, and spending 2-3 hours browsing COVID-19-related information were significantly associated with the occurrence of anxiety or depression. Those who used methods to regulate their emotional state, used a psychological hotline, and who had visited a psychiatrist showed higher anxiety or depression. Those who used online curricula and books, used preventive methods for COVID-19, and who had real-time information about the epidemic situation of the school showed lower anxiety and depression. CONCLUSIONS In addition to sociodemographic and COVID-19-related aspects, students' needs for psychological assistance and information from schools were also associated with anxiety and depression among college students.
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Affiliation(s)
- Na Meng
- Mental Health Center, West China Hospital/West China School of Nursing, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Zheng Liu
- Department of Nursing, West China Hospital/West China School of Nursing, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Ya Wang
- Department of Nursing, West China Hospital/West China School of Nursing, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Yan Feng
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, P.R. China
| | - Qin Liu
- Integration of Traditional Chinese Medicine and Western Medicine, Nanchong Central Hospital, Nanchong, Sichuan, P.R. China
| | - Junqiang Huang
- Department of Psychiatry, Chengdu Dekang Hospital, Chengdu, Sichuan, P.R. China
| | - Xiaolin Li
- West China School of Nursing/West China Hospital, Sichuan University, Chengdu, Sichuan, P.R. China
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Meng N, Chen J, Cao B, Wang F, Xie X, Li X. Focusing on quality of life in the family caregivers of patients with schizophrenia from the perspective of family functioning: A cross-sectional study. Medicine (Baltimore) 2021; 100:e24270. [PMID: 33592869 PMCID: PMC7870230 DOI: 10.1097/md.0000000000024270] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 12/11/2020] [Indexed: 02/05/2023] Open
Abstract
The study aimed to explore the association between family functioning and quality of life (QOL) in family caregivers of patients with schizophrenia.Totally 121 family caregivers were surveyed in the cross-sectional study by the self-administration questionnaires about sociodemographic characteristics, family functioning and QOL. Family functioning was evaluated in terms of the family assessment device and the Family Adaptability and Cohesion Evaluation Scale II China Version. QOL was evaluated in terms of TSDHE short-form 12-item health survey, version 2. Multiple regression models were built to explore the association between QOL and family functioning.A regression analysis showed that poorer physical health of family caregivers was significantly associated with the lower educational level of caregivers, the closer kinship with patients and the multiple episodes schizophrenia. The other regression analysis showed that better family adaptability and affective responsiveness were significantly associated with the better mental health of family caregivers.Family functioning is associated with mental health rather than the physical health of family caregivers. Psychoeducational intervention could focus on family caregivers with a lower educational level and closer kinship, and those who look after patients with multiple episodes schizophrenia. Further family intervention could focus on family adaptability and affective expression in family caregivers of patients with schizophrenia.
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Affiliation(s)
- Na Meng
- Mental Health Center, West China Hospital/West China School of Nursing, Sichuan University
| | - Juan Chen
- Mental Health Center, West China Hospital/West China School of Nursing, Sichuan University
| | - Bingrong Cao
- Mental Health Center, West China Hospital/West China School of Nursing, Sichuan University
| | - Feng Wang
- Mental Health Center, West China Hospital/West China School of Nursing, Sichuan University
| | - Xing Xie
- Mental Health Center, West China Hospital/West China School of Nursing, Sichuan University
| | - Xiaolin Li
- West China School of Nursing/West China Hospital, Sichuan University, Chengdu, Sichuan, China
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Huang YM, Li G, Li M, Yin J, Meng N, Zhang D, Cao XQ, Zhu FP, Chen M, Li L, Lyu XJ. Kelp-derived N-doped biochar activated peroxymonosulfate for ofloxacin degradation. Sci Total Environ 2021; 754:141999. [PMID: 33254870 DOI: 10.1016/j.scitotenv.2020.141999] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 06/12/2020] [Revised: 08/06/2020] [Accepted: 08/24/2020] [Indexed: 06/12/2023]
Abstract
N-doped carbon materials have been proven to be effective catalysts for activating peroxymonosulfate (PMS). Marine algae biomass is rich in nitrogenous substances , which can reduce the cost of N-doping process and can obtain excellent N-doped catalysts cheaply and easily. In this study, kelp biomass was selected to prepare N-doped kelp biochar (KB) materials. The high defect degree, high specific surface area, and participation of graphite N make KB have excellent catalytic degradation ability. The KB degraded 40 mg/L ofloxacin (OFL) close to 100% within 60 min, applied with PMS. Through quenching experiments and electron paramagnetic resonance spectroscopy, the degradation process dominated by non-radical pathways was determined. At the same time, O2·- and 1O2 were closely related, and a significant impact of quenching O2·- on the reaction was observed. The non-radical approach made the system excellent performance over a wide pH range and in the presence of multiple anions. The experiments of reusability confirmed the stability of the material. Its catalytic performance was restored after low-temperature pyrolysis. This research supports the use of endogenous nitrogen in biomass. It provides more options for advanced oxidation process application and marine resource development.
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Affiliation(s)
- Yi-Meng Huang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Guang Li
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Mingzhen Li
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Jijie Yin
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Na Meng
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Di Zhang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Xiao-Qiang Cao
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; Key Laboratory of Coal Processing and Efficient Utilization, (China University of Mining and Technology), Ministry of Education, Xuzhou 221116, China.
| | - Fan-Ping Zhu
- School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Ming Chen
- School of Civil Engineering, Southeast University, Nanjing 210096, China
| | - Lin Li
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Xian-Jun Lyu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
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Meng N, Lv Y, Liu Q, Liu R, Zhao X, Wei W. Visible-light-induced three-component reaction of quinoxalin-2(1H)-ones, alkenes and CF3SO2Na leading to 3-trifluoroalkylated quinoxalin-2(1H)-ones. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.11.034] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Zhao F, Meng N, Sun T, Wen J, Zhao X, Wei W. Metal-free electrochemical synthesis of α-ketoamides via decarboxylative coupling of α-keto acids with isocyanides and water. Org Chem Front 2021. [DOI: 10.1039/d1qo01351c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A mild and convenient electrochemical protocol has been developed for the preparation of α-ketoamides via a decarboxylative coupling reaction of α-keto acids with isocyanides and water.
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Affiliation(s)
- Feng Zhao
- Key Laboratory of Functional Organic Molecule, School of Chemistry and Materials Science, Guizhou Education University, Guiyang 550018, P. R. China
| | - Na Meng
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Ting Sun
- Key Laboratory of Functional Organic Molecule, School of Chemistry and Materials Science, Guizhou Education University, Guiyang 550018, P. R. China
| | - Jiangwei Wen
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Xiaohui Zhao
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Qinghai 810008, People's Republic of China
| | - Wei Wei
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
- Qinghai Provincial Key Laboratory of Tibetan Medicine Research and CAS Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Qinghai 810008, People's Republic of China
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Zou J, Li W, Meng N, Jiang J, Wu C, Lei TC, Sroka R, Huang Z. Evaluation of lensed fibers used in photodynamic therapy (PDT). Photodiagnosis Photodyn Ther 2020; 31:101924. [DOI: 10.1016/j.pdpdt.2020.101924] [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] [Received: 12/20/2019] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 10/23/2022]
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Guo Q, Duan Y, Meng N, Liu Y, Luo G. The N-terminus of Sec3 is required for cell wall integrity in yeast. Biochimie 2020; 177:30-39. [PMID: 32800898 DOI: 10.1016/j.biochi.2020.07.023] [Citation(s) in RCA: 1] [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: 04/16/2020] [Revised: 07/28/2020] [Accepted: 07/31/2020] [Indexed: 10/23/2022]
Abstract
The cell wall is essential for cell viability and pathogenesis of fungi. It was previously shown that the exocytosis landmark Sec3 is an effector of the cell wall integrity (CWI) master regulator Rho1 GTPase. However, disruption of the interaction between Sec3 and Rho1 did not inhibit exocytic secretion and cell growth. The physiological role of Sec3 in fungi is unclear. We have examined the growth, cell wall sensitivity, exocyst localization, and exocytic secretion of Sec3-binding deficient rho1 mutants and Rho1-binding deficient sec3 mutants. We found that the Sec3 N-terminal deletion mutant was defective in cell wall integrity. The cells harboring binding mutation between Rho1 and Sec3 N-terminus were sensitive to cell wall antagonists. We also found that the polarized localization of exocyst subunits was disrupted in these mutants. Our study demonstrates that the N-terminus of Sec3 mediates cell wall integrity in yeast. Pathogenic fungi may use similar regulatory mechanisms because components of the exocytic signaling pathways are conserved.
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Affiliation(s)
- Qingguo Guo
- Institute of Translational Medicine, China Medical University, Shenyang, 110122, China; Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, 110122, China
| | - Yuran Duan
- Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, 110122, China
| | - Na Meng
- Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, 110122, China
| | - Ying Liu
- Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, 110122, China.
| | - Guangzuo Luo
- Institute of Translational Medicine, China Medical University, Shenyang, 110122, China.
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Liu W, Wang J, Meng N, Wang X, Ge D. MiR-195 inhibits proliferation of oral squamous cell carcinoma cells through regulating Smad7. Panminerva Med 2020:S0031-0808.20.04009-4. [PMID: 32759899 DOI: 10.23736/s0031-0808.20.04009-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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)
- Weilin Liu
- Department of Stomatology, Honggang Hospital of Dongying, Dongying, China
| | - Jing Wang
- Department of Stomatology, Liaocheng People's Hospital, Liaocheng, China
| | - Na Meng
- Department of Stomatology, Hospital of Traditional Chinese Medicine of Dongchangfu District, Liaocheng, China
| | - Xuan Wang
- Department of Pediatrics, Dongying District People's Hospital, Dongying, China
| | - Dengfeng Ge
- Department of Stomatology, Central Hospital of Shengli Oil Field, Dongying, China -
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