2,236 Works

Distinct roles of cohesin acetyltransferases Esco1 and Esco2 in porcine oocyte meiosis I

Yajuan Lu, Ying Chen, Zhaokang Cui & Bo Xiong
In mammalian cells, cohesin acetyltransferases Esco1 and Esco2 acetylate cohesin subunit Smc3 to establish chromosome cohesion, ensuring the accurate chromosome segregation. However, we have previously documented that both Esco1 and Esco2 have unique substrates and roles in mouse oocyte meiosis I to orchestrate the meiotic progression, but whether these functions are conserved among species is still not determined. Here, we used porcine oocytes as a model to illustrate that Esco1 and Esco2 exerted conserved functions...

SPA: a peptide antagonist that acts as a cell-penetrating peptide for drug delivery

Jingjing Song, Sujie Huang, Zhengzheng Zhang, Bo Jia, Huan Xie, Ming Kai & Wei Zhang
Although cell-penetrating peptides (CPPs) has been proven to be efficient transporter for drug delivery, ideal peptide vectors for tumor therapy are still being urgently sought. Peptide antagonists have attracted substantial attention as targeting molecules because of their high tumor accumulation and antitumor activity compared with agonists. SPA, a derivative of substance P, is a potent antagonist that exhibits antitumor activity. Based on the amino acid composition of SPA, we speculate that it can translocate across...

Myotubularin related protein 7 is essential for the spermatogonial stem cell homeostasis via PI3K/AKT signaling

Dan Zhao, Cong Shen, Tingting Gao, Hong Li, Yueshuai Guo, Feng Li, Chenchen Liu, Yuanyuan Liu, Xia Chen, Xi Zhang, Yangyang Wu, Yi Yu, Meng Lin, Yan Yuan, Xiaofang Chen, Xiaoyan Huang, Shenmin Yang, Jun Yu, Jun Zhang & Bo Zheng
Myotubularin related protein 7 (MTMR7), a key member of the MTMR family, depicts phosphatase activity and is involved in myogenesis and tumor growth. We have previously identified MTMR7 in the proteomic profile of mouse spermatogonial stem cell (SSC) maturation and differentiation, implying that MTMR7 is associated with neonatal testicular development. In this study, to further explore the distribution and function of MTMR7 in mouse testis, we studied the effect of Mtmr7 knockdown on neonatal testicular...

Mapping the global potential transmission hotspots for severe fever with thrombocytopenia syndrome by machine learning methods

Dong Miao, Ke Dai, Guo-Ping Zhao, Xin-Lou Li, Wen-Qiang Shi, Jiu Song Zhang, Yang Yang, Wei Liu & Li-Qun Fang
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease with increasing spread. Currently SFTS transmission has expanded beyond Asian countries, however, with definitive global extents and risk patterns remained obscure. Here we established an exhaustive database that included globally reported locations of human SFTS cases and the competent vector, Haemaphysalis longicornis (H. longicornis), as well as the explanatory environmental variables, based on which, the potential geographic range of H. longicornis and risk areas...

Photoelectrochemical Immunosensor Based on ZnIn2S4/Bi2Se3 Nanocomposite for the Determination of Cardiac Troponin I

Wanxin Dong, Xinxin Mo, Yu Wang, Qin Lei & He Li
In this work, a novel flexible photoelectrochemical immunosensor is developed to determine cardiac troponin I (cTnI) in serum. The flower-like ZnIn2S4 nanospheres (ZIS), as signal amplification material, were successfully synthesized by a solvothermal method. The ZIS and Bi2Se3 were modified on the indium tin oxide- polyethylene terephthalate (ITO-PET) electrode, which effectively accelerates the electronic transition and improved the photocurrent conversion efficiency (signal on). However, the binding of antigen–antibody proteins blocks the electron transfer, resulting in...

RNA based mNGS approach identifies a novel human coronavirus from two individual pneumonia cases in 2019 Wuhan outbreak

Liangjun Chen, Weiyong Liu, Qi Zhang, Ke Xu, Guangming Ye, Weichen Wu, Ziyong Sun, Fang Liu, Kailang Wu, Bo Zhong, Yi Mei, Wenxia Zhang, Yu Chen, Yirong Li, Mang Shi, Ke Lan & Yingle Liu
From December 2019, an outbreak of unusual pneumonia was reported in Wuhan with many cases linked to Huanan Seafood Market that sells seafood as well as live exotic animals. We investigated two patients who developed acute respiratory syndromes after independent contact history with this market. The two patients shared common clinical features including fever, cough, and multiple ground-glass opacities in the bilateral lung field with patchy infiltration. Here, we highlight the use of a low-input...

RNA based mNGS approach identifies a novel human coronavirus from two individual pneumonia cases in 2019 Wuhan outbreak

Liangjun Chen, Weiyong Liu, Qi Zhang, Ke Xu, Guangming Ye, Weichen Wu, Ziyong Sun, Fang Liu, Kailang Wu, Bo Zhong, Yi Mei, Wenxia Zhang, Yu Chen, Yirong Li, Mang Shi, Ke Lan & Yingle Liu
From December 2019, an outbreak of unusual pneumonia was reported in Wuhan with many cases linked to Huanan Seafood Market that sells seafood as well as live exotic animals. We investigated two patients who developed acute respiratory syndromes after independent contact history with this market. The two patients shared common clinical features including fever, cough, and multiple ground-glass opacities in the bilateral lung field with patchy infiltration. Here, we highlight the use of a low-input...

Robust neutralization assay based on SARS-CoV-2 S-protein-bearing vesicular stomatitis virus (VSV) pseudovirus and ACE2-overexpressing BHK21 cells

Hua-Long Xiong, Yang-Tao Wu, Jia-Li Cao, Ren Yang, Ying-Xia Liu, Jian Ma, Xiao-Yang Qiao, Xiang-Yang Yao, Bao-Hui Zhang, Ya-Li Zhang, Wang-Heng Hou, Yang Shi, Jing-Jing Xu, Liang Zhang, Shao-Juan Wang, Bao-Rong Fu, Ting Yang, Sheng-Xiang Ge, Jun Zhang, Quan Yuan, Bao-Ying Huang, Zhi-Yong Li, Tian-Ying Zhang & Ning-Shao Xia
The global pandemic of coronavirus disease 2019 (COVID-19) is a disaster for human society. A convenient and reliable neutralization assay is very important for the development of vaccines and novel drugs. In this study, a G protein-deficient vesicular stomatitis virus (VSVdG) bearing a truncated spike protein (S with C-terminal 18 amino acid truncation) was compared to that bearing the full-length spike protein of SARS-CoV-2 and showed much higher efficiency. A neutralization assay was established based...

Antecedents of purpose in life: Evidence from a lagged exposure-wide analysis

Ying Chen, Eric S. Kim, Alexandra E. Shields & Tyler J. VanderWeele
Potential antecedents to having a sense of purpose in life remain understudied. As researchers begin contemplating purpose as a promising target of public health intervention, it is critical to identify its antecedents. Using prospective data from the Nurses’ Health Study II (2009–2016; N ranged from 3,905 to 4,189), this study evaluated a wide range of potential antecedents of purpose, including psychosocial well-being, psychological distress, employment characteristics, lifestyle, and physical health factors. In separate regression models,...

ddPCR: a more accurate tool for SARS-CoV-2 detection in low viral load specimens

Tao Suo, Xinjin Liu, Jiangpeng Feng, Ming Guo, Wenjia Hu, Dong Guo, Hafiz Ullah, Yang Yang, Qiuhan Zhang, Xin Wang, Muhanmmad Sajid, Zhixiang Huang, Liping Deng, Tielong Chen, Fang Liu, Ke Xu, Yuan Liu, Qi Zhang, Yingle Liu, Yong Xiong, Guozhong Chen, Ke Lan & Yu Chen
Quantitative real time PCR (RT-PCR) is widely used as the gold standard for clinical detection of SARS-CoV-2. However, due to the low viral load specimens and the limitations of RT-PCR, significant numbers of false negative reports are inevitable, which results in failure to timely diagnose, cut off transmission, and assess discharge criteria. To improve this situation, an optimized droplet digital PCR (ddPCR) was used for detection of SARS-CoV-2, which showed that the limit of detection...

Viral RNA level, serum antibody responses, and transmission risk in recovered COVID-19 patients with recurrent positive SARS-CoV-2 RNA test results: a population-based observational cohort study

Chao Yang, Min Jiang, Xiaohui Wang, Xiujuan Tang, Shisong Fang, Hao Li, Le Zuo, Yixiang Jiang, Yifan Zhong, Qiongcheng Chen, Chenli Zheng, Lei Wang, Shuang Wu, Weihua Wu, Hui Liu, Jing Yuan, Xuejiao Liao, Zhen Zhang, Xiaolu Shi, Yijie Geng, Huan Zhang, Huanying Zheng, Min Wan, Linying Lu, Xiaohu Ren … & Qinghua Hu
Managing recovered COVID-19 patients with recurrent-positive SARS-CoV-2 RNA test results is challenging. We performed a population-based observational study to characterize the viral RNA level and serum antibody responses in recurrent-positive patients and evaluate their viral transmission risk. Of 479 recovered COVID-19 patients, 93 (19%) recurrent-positive patients were identified, characterized by younger age, with a median discharge-to-recurrent-positive length of 8 days. After readmission, recurrent-positive patients exhibited mild (28%) or absent (72%) symptoms, with no disease progression....

Viral RNA level, serum antibody responses, and transmission risk in recovered COVID-19 patients with recurrent positive SARS-CoV-2 RNA test results: a population-based observational cohort study

Chao Yang, Min Jiang, Xiaohui Wang, Xiujuan Tang, Shisong Fang, Hao Li, Le Zuo, Yixiang Jiang, Yifan Zhong, Qiongcheng Chen, Chenli Zheng, Lei Wang, Shuang Wu, Weihua Wu, Hui Liu, Jing Yuan, Xuejiao Liao, Zhen Zhang, Xiaolu Shi, Yijie Geng, Huan Zhang, Huanying Zheng, Min Wan, Linying Lu, Xiaohu Ren … & Qinghua Hu
Managing recovered COVID-19 patients with recurrent-positive SARS-CoV-2 RNA test results is challenging. We performed a population-based observational study to characterize the viral RNA level and serum antibody responses in recurrent-positive patients and evaluate their viral transmission risk. Of 479 recovered COVID-19 patients, 93 (19%) recurrent-positive patients were identified, characterized by younger age, with a median discharge-to-recurrent-positive length of 8 days. After readmission, recurrent-positive patients exhibited mild (28%) or absent (72%) symptoms, with no disease progression....

Supplemental Material, CONSORT_a - Effectiveness of Continuous Positive Airway Pressure Versus Mandibular Advancement Device in Severe Obstructive Sleep Apnea Patients With Mandibular Retrognathia: A Prospective Clinical Trial

Haichun Lai, Wei Huang, Wei Chen & Desheng Wang
Supplemental Material, CONSORT_a for Effectiveness of Continuous Positive Airway Pressure Versus Mandibular Advancement Device in Severe Obstructive Sleep Apnea Patients With Mandibular Retrognathia: A Prospective Clinical Trial by Haichun Lai, Wei Huang, Wei Chen and Desheng Wang in Ear, Nose & Throat Journal

Effectiveness of Continuous Positive Airway Pressure Versus Mandibular Advancement Device in Severe Obstructive Sleep Apnea Patients With Mandibular Retrognathia: A Prospective Clinical Trial

Haichun Lai, Wei Huang, Wei Chen & Desheng Wang
Aim:Some obstructive sleep apnea (OSA) patients may have mandibular retrognathia (ANB > 4.7° and SNB < 76.2°). Currently, there are no studies that have compared the effectiveness of continuous positive airway pressure (CPAP) versus mandibular advancement device (MAD) in severe OSA patients with mandibular retrognathia. We explored the efficacy of CPAP versus MAD for the treatment of severe OSA patients with mandibular retrognathia.Methods:A total of 105 patients were enrolled. Outcomes were assessed by using polysomnography,...

Prolonged shedding of severe acute respiratory syndrome coronavirus 2 in patients with COVID-19

Qian Li, Xiao-Shuang Zheng, Xu-Rui Shen, Hao-Rui Si, Xi Wang, Qi Wang, Bei Li, Wei Zhang, Yan Zhu, Ren-Di Jiang, Kai Zhao, Hui Wang, Zheng-Li Shi, Hui-Lan Zhang, Rong-Hui Du & Peng Zhou
Following acute infection, individuals COVID-19 may still shed SARS-CoV-2 RNA. However, limited information is available regarding the active shedding period or whether infectious virus is also shed. Here, we monitored the clinical characteristics and virological features of 38 patients with COVID-19 (long-term carriers) who recovered from the acute disease, but still shed viral RNA for over 3 months. The median carrying history of the long-term carriers was 92 days after the first admission, and the...

Prolonged shedding of severe acute respiratory syndrome coronavirus 2 in patients with COVID-19

Qian Li, Xiao-Shuang Zheng, Xu-Rui Shen, Hao-Rui Si, Xi Wang, Qi Wang, Bei Li, Wei Zhang, Yan Zhu, Ren-Di Jiang, Kai Zhao, Hui Wang, Zheng-Li Shi, Hui-Lan Zhang, Rong-Hui Du & Peng Zhou
Following acute infection, individuals COVID-19 may still shed SARS-CoV-2 RNA. However, limited information is available regarding the active shedding period or whether infectious virus is also shed. Here, we monitored the clinical characteristics and virological features of 38 patients with COVID-19 (long-term carriers) who recovered from the acute disease, but still shed viral RNA for over 3 months. The median carrying history of the long-term carriers was 92 days after the first admission, and the...

Risks and features of secondary infections in severe and critical ill COVID-19 patients

Haocheng Zhang, Yi Zhang, Jing Wu, Yang Li, Xian Zhou, Xin Li, Haili Chen, Mingquan Guo, Shu Chen, Feng Sun, Richeng Mao, Chao Qiu, Zhaoqin Zhu, Jingwen Ai & Wenhong Zhang
Objectives Severe or critical COVID-19 is associated with intensive care unit admission, increased secondary infection rate, and would lead to significant worsened prognosis. Risks and characteristics relating to secondary infections in severe COVID-19 have not been described. Methods Severe and critical COVID-19 patients from Shanghai were included. We collected lower respiratory, urine, catheters, and blood samples according to clinical necessity and culture and mNGS were performed. Clinical and laboratory data were archived. Results We found...

The activation of antiviral RNA interference not only exists in neural progenitor cells but also in somatic cells in mammals

Yuqiang Zhang, Zhe Li, Zhi Ye, Yan Xu, Binbin Wang, Congcong Wang, Yunpeng Dai, Jinfeng Lu, Boxun Lu, Wanju Zhang & Yang Li
The RNA interference (RNAi) pathway directs an important antiviral immunity mechanism in plants and invertebrates. Recently, we and others have demonstrated that the antiviral RNAi response is also conserved in mammals, at least to five distinct RNA viruses, including Zika virus (ZIKV). ZIKV may preferentially infect neuronal progenitor cells (NPCs) in the developing foetal brain. Ex vivo ZIKV infection induces RNAi-mediated antiviral response in human NPCs, but not in the more differentiated NPCs or somatic...

The activation of antiviral RNA interference not only exists in neural progenitor cells but also in somatic cells in mammals

Yuqiang Zhang, Zhe Li, Zhi Ye, Yan Xu, Binbin Wang, Congcong Wang, Yunpeng Dai, Jinfeng Lu, Boxun Lu, Wanju Zhang & Yang Li
The RNA interference (RNAi) pathway directs an important antiviral immunity mechanism in plants and invertebrates. Recently, we and others have demonstrated that the antiviral RNAi response is also conserved in mammals, at least to five distinct RNA viruses, including Zika virus (ZIKV). ZIKV may preferentially infect neuronal progenitor cells (NPCs) in the developing foetal brain. Ex vivo ZIKV infection induces RNAi-mediated antiviral response in human NPCs, but not in the more differentiated NPCs or somatic...

Tranilast attenuates neuropathic pain during type-2 diabetes by inhibiting hypoxia-induced pro-inflammatory cytokines in Zucker diabetic fatty rat model

Wei Zhang, Jun Ma, Shan Wang, Tao Huang & Min Xia
The modulatory effect of tranilast on neuropathic pain in type-2 diabetes (T2DM) remains unclear. We monitored interleukin (IL)-1β, nuclear factor-κB (NF-κB) and tumour necrosis factor-α (TNF-α) levels during the progression of T2DM induced neuropathic pain in rats, and assessed the impact of tranilast treatment of increasing concentrations (0, 200 and 400 mg/kg/day via oral gavage in 1% NaHCO3 delivered as 100 mg/kg twice a day) on the levels of cytokine production, as well as on...

Potent immunosuppressive and anti-inflammatory bisindole alkaloids from Melodinus fusiformis

Lu Liu, Ming-Jun Xie, Wen-Bing Zhou, Jin-Tang Wang, Jia-Yi Wang, Afsar Khan, Ya-Ping Liu, Jian-Xin Cao, Gui-Guang Cheng & Wen-Yuan Mao
Phytochemical investigation of Melodinus fusiformis led to a new aspidosperma-aspidosperma bisindole alkaloid (BIA), bis-19β-hydroxyvenalstonidine (1), together with three known BIAs (2–4). The structures were established by extensive analysis of their HRESIMS, NMR data, and comparing with the reported data. BIA 1 is an almost symmetrical structure, linked by C3–C14’ bond, while BIAs 2–4 are reported for the first time from the plant. The cytotoxic, immunosuppressive and anti-inflammatory activities of BIAs 1–4 were evaluated in vitro....

Potent immunosuppressive and anti-inflammatory bisindole alkaloids from Melodinus fusiformis

Lu Liu, Ming-Jun Xie, Wen-Bing Zhou, Jin-Tang Wang, Jia-Yi Wang, Afsar Khan, Ya-Ping Liu, Jian-Xin Cao, Gui-Guang Cheng & Wen-Yuan Mao
Phytochemical investigation of Melodinus fusiformis led to a new aspidosperma-aspidosperma bisindole alkaloid (BIA), bis-19β-hydroxyvenalstonidine (1), together with three known BIAs (2–4). The structures were established by extensive analysis of their HRESIMS, NMR data, and comparing with the reported data. BIA 1 is an almost symmetrical structure, linked by C3–C14’ bond, while BIAs 2–4 are reported for the first time from the plant. The cytotoxic, immunosuppressive and anti-inflammatory activities of BIAs 1–4 were evaluated in vitro....

Evaluation of cesarean delivery rates in different levels of hospitals in Jiangsu Province, China, using the 10-Group classification system

Ning Gu, Yimin Dai, Dan Lu, Tingmei Chen, Muling Zhang, Tao Huang, Yalan Qi, Xinning Han, Lihua Xie, Jishi Yang, Chengling Fan, Yunhua Yan, Anhong Zhang, Xiaoping Weng, Huiling Zhang, Li Su, Yingyan Li & Yali Hu
To compare cesarean delivery (CD) rates in referral and non-referral hospitals in Maternal Safety Collaboration in Jiangsu province, China. Sixteen participants (4 referral hospitals, 12 non-referral hospitals) from Drum Tower Hospital Collaboration for Maternal Safety reported CD rates in 2019 using ten-group classification system and maternal/neonatal morbidity and mortality. A total of 22,676 CDs were performed among 52,499 deliveries and the average CD rate was 43.2% (range 34.8–69.6%). CD rate in non-referral hospitals (44.7%) was...

Investigating genetic diversity and population phylogeny of five Chongqing local chicken populations autosomal using microsatellites

Xue Yang, Cheng-Li Liu, Bai-Gao Yang, Hai-Qiang Hu, Gong Ying, Guo Yi, Bo-Er Chen, Ying Yuan, He Yong-Meng, Wei-Yi Zhang, Dan-Ping Zhang, Guang-Xin E. & Ming-Hui Li
The genetic diversity and population structures of five Chongqing local chicken populations were investigated using by 24 microsatellite markers. Results revealed that the mean number of alleles (NA) ranged from 7.08 (Daninghe chicken, DN) to 8.46 (Nanchuan chicken, NC). The highest observed heterozygosity (HO) and expected heterozygosity (HE) were observed in DN (HO = 0.7252; HE = 0.7409) and the lowest HO and HE were observed in XS (Xiushan native chicken [XS], HO = 0.5910...

Association study of hypertension susceptibility genes ITGA9, MOV10, and CACNB2 with preeclampsia in Chinese Han population

Qian Xin, Gang Xin, Li Li, Wenjuan Sun, Wen Jiang, Jue Wang, Yun Luan, Ying Zhang, Ling Cheng, Shuhong Duan, Fanzhen Hong, Qinghong Ji & Weihong Ma
Preeclampsia (PE) is a disorder that occurs during the pregnancy and could affect the maternal and perinatal mortality as well as morbidity. The aim of our study is to investigate the associations between the hypertension susceptibility genes ITGA9, MOV10 and CACNB2 with PE in Chinese Han population. A case–control study including 178 PE patients and 202 healthy controls was conducted to assess the associations between three loci (ITGA9 rs155524, MOV10 rs2932538 and CACNB2 rs4373814) and...

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