1.Effects of Exercise Training on The Behaviors and HPA Axis in Autism Spectrum Disorder Rats Through The Gut Microbiota
Xue-Mei CHEN ; Yin-Hua LI ; Jiu-Gen ZHONG ; Zhao-Ming YANG ; Xiao-Hui HOU
Progress in Biochemistry and Biophysics 2025;52(6):1511-1528
ObjectiveThe study explores the influence of voluntary wheel running on the behavioral abnormalities and the activation state of the hypothalamic-pituitary-adrenal (HPA) axis in autism spectrum disorder (ASD) rats through gut microbiota. MethodsSD female rats were selected and administered either400 mg/kg of valproic acid (VPA) solution or an equivalent volume of saline via intraperitoneal injection on day 12.5 of pregnancy. The resulting offspring were divided into 2 groups: the ASD model group (PASD, n=35) and the normal control group (PCON, n=16). Behavioral assessments, including the three-chamber social test, open field test, and Morris water maze, were conducted on postnatal day 23. After behavioral testing, 8 rats from each group (PCON, PASD) were randomly selected for serum analysis using enzyme-linked immunosorbent assay (ELISA) to measure corticotropin-releasing hormone (CRH), adrenocorticotropic hormone (ACTH), and corticosterone (CORT) concentration, to evaluate the functional state of the HPA axis in rats. On postnatal day 28, the remaining 8 rats in the PCON group were designated as the control group (CON, n=8), and the remaining 27 rats in the PASD group were randomly divided into 4 groups: ASD non-intervention group (ASD, n=6), ASD exercise group (ASDE, n=8), ASD fecal microbiota transplantation group (FMT, n=8), and ASD sham fecal microbiota transplantation group (sFMT, n=5). The rats in the ASD group and the CON group were kept under standard conditions, while the rats in the ASDE group performed 6 weeks of voluntary wheel running intervention starting on postnatal day 28. The rats in the FMT group were gavaged daily from postnatal day 42 with 1 ml/100 g fresh fecal suspension from ASDE rats which had undergone exercise for 2 weeks, 5 d per week, continuing for 4 weeks. The sFMT group received an equivalent volume of saline. After the interventions were completed, behavioral assessments and HPA axis markers were measured for all groups. ResultsBefore the intervention, the ASD model group exhibited significantly reduced social ability, social novelty preference, spontaneous activity, and exploratory interest, as well as impaired spatial learning, memory, and navigation abilities compared to the normal control group (P<0.05). Serum concentration of corticotropin-releasing hormone (CRH), adrenocorticotropic hormone (ACTH), and corticosterone (CORT) in the PASD group were significantly higher than those in the PCON group (P<0.05). Following 6 weeks of voluntary wheel running, the ASDE group showed significant improvements in social ability, social novelty preference, spontaneous activity, exploratory interest, spatial learning, memory, and navigation skills compared to the ASD group (P<0.05), with a significant decrease in serum CORT concentration (P<0.05), and a downward trend in CRH and ACTH concentration. After 4 weeks of fecal microbiota transplantation in the exercise group, the FMT group showed marked improvements in social ability, social novelty preference, spontaneous activity, exploratory interest, as well as spatial learning, memory, and navigation abilities compared to both the ASD and sFMT groups (P<0.05). In addition, serum ACTH and CORT concentration were significantly reduced (P<0.05), and CRH concentration also showed a decreasing trend. ConclusionExercise may improve ASD-related behaviors by suppressing the activation of the HPA axis, with the gut microbiota likely playing a crucial role in this process.
2.Effects of polyene phosphatidylcholine on metabolic disorders of obese mice induced by high fat diet
Cai LI ; Bing-Jiu LU ; Zhao-Dong QI ; Jia-Lian ZHENG
The Chinese Journal of Clinical Pharmacology 2024;40(6):874-878
Objective To study the mechanism of polyene phosphatidylcholine in improving metabolic disorders and fatty liver induced by high fat diet.Methods Thirty-two C57BL/6 mice were randomly divided into blank group,control group,model group and experimental group.The blank group was fed with low-fat diet and intraperitoneal injection of 10%glucose 200 μL twice a week.Control group was fed with low-fat diet twice a week and intraperitoneally injected 10%glucose solution 200 μL containing polyene phosphatidylcholine(PPC)20 μg.Model group was fed with high-fat diet and intraperitoneal injection of 10%glucose 200 μL twice a week.Experimental group was fed with high-fat diet twice a week and intraperitoneally injected 10%glucose solution 200 μL containing PPC 20 μg.The body weight of the mice was measured,blood glucose test strips and insulin resistance was analyzed.The levels of triglyceride(TG),high density lipoprotein(HDL),low density lipoprotein(LDL),glutamic oxalic aminotransferase(GOT)and glutamic pyruvic aminotransferase(GPT)in serum and liver were analyzed by biochemical method.The levels of tumor necrosis factor-α(TNF-α),interleukin-6 and IL-8 were detected by enzyme-linked immunosorbent assay(ELISA).Results The serum TG levels of blank group,control group,model group and experimental group were(0.15±0.01),(0.11±0.01),(0.21±0.01)and(0.12±0.01)mmol·L-1;LDL levels were(0.41±0.01),(0.25±0.01),(0.71±0.02)and(0.49±0.01)mmol·L-1;GOT levels were(30.30±0.89),(31.39±1.18),(43.04±2.82)and(25.64±0.72)mmol·L-1;GPT levels were(9.15±0.45),(7.39±1.88),(12.87±1.81)and(7.96±1.64)mmol·L-1;fasting blood glucose levels were(4.97±0.08),(6.08±0.18),(8.12±0.20)and(7.29±0.02)mmol·L-1;fasting insulin levels were(6.52±1.11),(5.45±0.28),(54.83±4.32)and(30.55±2.73)mU·L-1;the levels of TNF-α in liver tissues were(3.98±0.63),(3.95±0.98),(20.55±4.71)and(15.28±1.73)pg·g-1;IL-6 levels were(18.93±8.56),(17.64±3.29),(59.40±4.63)and(37.54±7.33)pg·g-1;IL-8 levels were(67.16±12.37),(59.44±3.58),(198.40±9.27)and(132.10±7.04)pg·g-1.The difference of above indicatory between experimental group and model group was statistically significant(all P<0.05).Conclusion Polyene phosphatidylcholine may inhibit the expression of TNF-α,IL-6 and IL-8 inflammatory factors by mediating the inhibition of inflammation on liver tissue and then improve metabolic disorders.
3.Efficacy and Safety of Jianpi Jieyu Decoction for Patients with Mild-to-Moderate Depression of Xin (Heart)-Pi (Spleen) Deficiency Syndrome: A Multi-centre Randomized Controlled Study.
Xu CHEN ; Jiu-Xi CHEN ; Xue-Yan HAN ; Yang ZHAO ; Jing CAO ; Xiu-Zhen JIAO ; Hong-Mei LIU ; Chun-Li GUO ; Shuo MENG ; Shuai LIANG ; Jiang-Xia QI ; Dong CHEN ; Ming-Xia LI ; Yun-Xia JIAO ; Ting-Ting WANG ; Xia HONG
Chinese journal of integrative medicine 2023;29(4):299-307
OBJECTIVE:
To evaluate the efficacy and safety of Jianpi Jieyu Decoction (JJD) for treating patients with mild-to-moderate depression of Xin (Heart)-Pi (Spleen) deficiency (XPD) syndrome.
METHODS:
In this multi-center, randomized, controlled study, 140 patients with mild-to-moderate depression of XPD syndrome were included from Xiyuan Hospital of China Academy of Chinese Medical Sciences and Botou Hospital of Traditional Chinese Medicine from December 2017 to December 2019. They were randomly divided into JJD group and paroxetine group by using a random number table, with 70 cases in each group. The patients in the JJD group were given JJD one dose per day (twice daily at morning and evening, 100 mL each time), and the patients in the paroxetine group were given paroxetine (10 mg/d in week 1; 20 mg/d in weeks 2-6), both orally administration for a total of 6 weeks. The primary outcome was the change of 17-item Hamilton Depression Rating Scale (HAMD-17) score at week 6 from baseline. The secondary outcomes included the Hamilton Anxiety Scale (HAMA) score, Traditional Chinese Medicine Symptom Scale (TCMSS), and Clinlcal Global Impression (CGI) scores at the 2nd, 4th, and 6th weekends of treatment, HAMD-17 response (defined as a reduction in score of >50%) and HAMD-17 remission (defined as a score of ⩽7) at the end of the 6th week of treatment. Adverse events (AEs) were also recorded.
RESULTS:
From baseline to week 6, the HAMD-17 scores decreased 10.2 ± 4.0 and 9.1 ± 4.9 points in the JJD and paroxetine groups, respectively (P=0.689). The HAMD-17 response occurred in 60% of patients in the JJD group and in 50% of those in the paroxetine group (P=0.292); HAMD-17 remission occurred in 45.7% and 30% of patients, respectively (P=0.128). The differences of CGI scores at the 6th week were not statistically significant (P>0.05). There were significant differences in HAMD-17 scores between the two groups at 2nd and 4th week (P=0.001 and P=0.014). The HAMA scores declined 8.1 ± 3.0 and 6.9 ± 4.3 points from baseline to week 6 in the JJD and paroxetine groups, respectively (P=0.905 between groups). At 4th week of treatment, there was a significant difference in HAMA between the two groups (P=0.037). TCMSS decreased 11.4 ± 5.1, and 10.1 ± 6.8 points in the JJD and paroxetine groups, respectively (P=0.080 between groups). At the 6th week, the incidence of AEs in the JJD group was significantly lower than that in the paroxetine group (7.14% vs. 22.86%, P<0.05).
CONCLUSION
Compared with paroxetine, JJD was associated with a significantly lower incidence of AEs in patients with mild-to-moderate depression of XPD syndrome, with no difference in efficacy at 6 weeks. (Trial registration No. ChiCTR2000040922).
Humans
;
Paroxetine/adverse effects*
;
Spleen
;
Anxiety
;
Syndrome
;
Medicine, Chinese Traditional
;
Treatment Outcome
;
Double-Blind Method
4.Clinical practice guidelines for modified radical mastectomy of breast cancer: Chinese Society of Breast Surgery (CSBrs) practice guidelines 2021.
De-Chuang JIAO ; Jiu-Jun ZHU ; Li QIN ; Xu-Hui GUO ; Ya-Jie ZHAO ; Xiu-Chun CHEN ; Cheng-Zheng WANG ; Zhen-Duo LU ; Lian-Fang LI ; Shu-De CUI ; Zhen-Zhen LIU
Chinese Medical Journal 2021;134(8):895-897
5.Delivery room resuscitation and short-term outcomes of extremely preterm and extremely low birth weight infants: a multicenter survey in North China.
Shuai-Jun LI ; Qi FENG ; Xiu-Ying TIAN ; Ying ZHOU ; Yong JI ; Yue-Mei LI ; Shu-Fen ZHAI ; Wei GUO ; Fang ZHANG ; Rong-Xiu ZHENG ; Hai-Ying HE ; Xia LIU ; Jun-Yi WANG ; Hua MEI ; Hong-Yun WANG ; Hua XIE ; Chao-Mei ZENG ; Li MA ; Ping-Ping ZHANG ; Jin-Yu LI ; Xiao-Ying WANG ; Li-Hua LI ; Hong CUI ; Shu-Lan YANG ; Lu CHEN ; Xiao-Hong GU ; Yan-Ju HU ; Sheng-Shun QUE ; Li-Xia SUN ; Ming YANG ; Wen-Li ZHAO ; Qiu-Yan MA ; Hai-Juan WANG ; Jiu-Ye GUO
Chinese Medical Journal 2021;134(13):1561-1568
BACKGROUND:
Delivery room resuscitation assists preterm infants, especially extremely preterm infants (EPI) and extremely low birth weight infants (ELBWI), in breathing support, while it potentially exerts a negative impact on the lungs and outcomes of preterm infants. This study aimed to assess delivery room resuscitation and discharge outcomes of EPI and ELBWI in China.
METHODS:
The clinical data of EPI (gestational age [GA] <28 weeks) and ELBWI (birth weight [BW] <1000 g), admitted within 72 h of birth in 33 neonatal intensive care units from five provinces and cities in North China between 2017 and 2018, were analyzed. The primary outcomes were delivery room resuscitation and risk factors for delivery room intubation (DRI). The secondary outcomes were survival rates, incidence of bronchopulmonary dysplasia (BPD), and risk factors for BPD.
RESULTS:
A cohort of 952 preterm infants were enrolled. The incidence of DRI, chest compressions, and administration of epinephrine was 55.9% (532/952), 12.5% (119/952), and 7.0% (67/952), respectively. Multivariate analysis revealed that the risk factors for DRI were GA <28 weeks (odds ratio [OR], 3.147; 95% confidence interval [CI], 2.082-4.755), BW <1000 g (OR, 2.240; 95% CI, 1.606-3.125), and antepartum infection (OR, 1.429; 95% CI, 1.044-1.956). The survival rate was 65.9% (627/952) and was dependent on GA. The rate of BPD was 29.3% (181/627). Multivariate analysis showed that the risk factors for BPD were male (OR, 1.603; 95% CI, 1.061-2.424), DRI (OR, 2.094; 95% CI, 1.328-3.303), respiratory distress syndrome exposed to ≥2 doses of pulmonary surfactants (PS; OR, 2.700; 95% CI, 1.679-4.343), and mechanical ventilation ≥7 days (OR, 4.358; 95% CI, 2.777-6.837). However, a larger BW (OR, 0.998; 95% CI, 0.996-0.999), antenatal steroid (OR, 0.577; 95% CI, 0.379-0.880), and PS use in the delivery room (OR, 0.273; 95% CI, 0.160-0.467) were preventive factors for BPD (all P < 0.05).
CONCLUSION
Improving delivery room resuscitation and management of respiratory complications are imperative during early management of the health of EPI and ELBWI.
Birth Weight
;
Bronchopulmonary Dysplasia
;
China/epidemiology*
;
Delivery Rooms
;
Female
;
Gestational Age
;
Humans
;
Infant
;
Infant, Extremely Low Birth Weight
;
Infant, Extremely Premature
;
Infant, Newborn
;
Male
;
Pregnancy
6.Effects of theta burst stimulation mode repetitive transcranial magnetic stimulation on negative symptoms and cognitive function in elderly patients with chronic schizophrenia
Jing ZHAO ; Yinmiao GUO ; Mengnan LI ; Ju GAO ; Xinyu FANG ; Chao ZHOU ; Jiu CHEN ; Fuquan ZHANG ; Xiangrong ZHANG
Chinese Journal of Behavioral Medicine and Brain Science 2021;30(7):577-583
Objective:To investigate the effects of theta burst stimulation(TBS)mode repeated transcranial magnetic stimulation (r-TMS) in the left prefrontal on negative symptoms and cognitive function in the elderly chronic schizophrenic patients.Methods:Totally 48 patients with stable chronic senile schizophrenia (24 cases in r-TMS treatment group and 24 cases in r-TMS pseudo stimulation control group) were selected. The treatment group was given the TBS mode r-TMS performed in the left dorsolateral prefrontal cortex. The control group was given pseudo stimulation at the same site. Before and after treatment, the brief psychiatric rating scale(BPRS), scale for assessment of negative symptoms(SANS), and positive and negative syndrome scale(PANSS)were used to assess mental symptoms, while Mattis-dementia rating scale(MDRS-2)and social adaptation functioning evaluation(SAFE)were used to assess cognitive function and social function. SPSS 20.0 was used for statistical analysis.Comparisons of the differences between inter groups and intra groups were conducted by independent sample t test and paired t-test. Results:(1)There were significant differences in the total score of PANSS scale((60.17±3.73), (56.67±3.12)), the negative symptom subscale score of PANSS((20.88±2.94), (17.96±2.33)) and the score of SANS((30.67±1.66), (30.25±1.45)) before and after treatment in the treatment group (all P<0.05). The D-value before and after treatment in the scores of BPRS ( t=3.513, P=0.001), PANSS ( t=6.048, P<0.01), negative symptom subscale ( t=6.610, P<0.01) and SANS ( t=8.239, P<0.01) were significantly different between the two groups. (2)There were significant differences in the scores of MDRS-2 and its sub scales before and after treatment in the treatment group (all P<0.05). The D-value before and after treatment in the scores of MDRS-2 ( t=6.216, P<0.01), attention ( t=4.596, P<0.01), start/maintain ( t=6.424, P<0.01), concept formation ( t=3.974, P<0.01), construction( t=2.194, P=0.033) and memory ( t=3.162, P=0.003) were significantly different between the two groups.(3)There was no significant difference in the SAFE score between the treatment group and the control group before and after treatment ( t=0.138, 0.142, both P>0.05). Conclusion:TBS can improve the negative symptoms and cognitive function in patients with the elderly chronic schizophrenic, but the effect of social function is not clear.
7.Clinical practice guidelines for multigene assays in patients with early-stage breast cancer: Chinese Society of Breast Surgery (CSBrS) practice guidelines 2021.
Jiu-Jun ZHU ; De-Chuang JIAO ; Min YAN ; Xu-Hui GUO ; Ya-Jie ZHAO ; Xiu-Chun CHEN ; Cheng-Zheng WANG ; Zhen-Duo LU ; Lian-Fang LI ; Shu-De CUI ; Zhen-Zhen LIU
Chinese Medical Journal 2021;134(19):2269-2271
8.Correlation of circulating tumor DNA EGFR mutation levels with clinical outcomes in patients with advanced lung adenocarcinoma.
Xiang-Liang LIU ; Ri-Lan BAI ; Xiao CHEN ; Yu-Guang ZHAO ; Xu WANG ; Ke-Wei MA ; Hui-Min TIAN ; Fu-Jun HAN ; Zi-Ling LIU ; Lei YANG ; Wei LI ; Fei GAI ; Jiu-Wei CUI
Chinese Medical Journal 2021;134(20):2430-2437
BACKGROUND:
Circulating tumor DNA (ctDNA) is a promising biomarker for non-invasive epidermal growth factor receptor mutations (EGFRm) detection in lung cancer patients, but existing methods have limitations in sensitivity and availability. In this study, we used the ΔCt value (mutant cycle threshold [Ct] value-internal control Ct value) generated during the polymerase chain reaction (PCR) assay to convert super-amplification-refractory mutation system (superARMS) from a qualitative method to a semi-quantitative method named reformed-superARMS (R-superARMS), and evaluated its performance in detecting EGFRm in plasma ctDNA in patients with advanced lung adenocarcinoma.
METHODS:
A total of 41 pairs of tissues and plasma samples were obtained from lung adenocarcinoma patients who had known EGFRm in tumor tissue and were previously untreated. EGFRm in ctDNA was identified by using superARMS. Through making use of ΔCt value generated during the detection process of superARMS, we indirectly transform this qualitative detection method into a semi-quantitative PCR detection method, named R-superARMS. Both qualitative and quantitative analyses of the data were performed. Kaplan-Meier analysis was performed to estimate the progression-free survival (PFS) and overall survival (OS). Fisher exact test was used for categorical variables.
RESULTS:
The concordance rate of EGFRm in tumor tissues and matched plasma samples was 68.3% (28/41). At baseline, EGFRm-positive patients were divided into two groups according to the cut-off ΔCt value of EGFRm set at 8.11. A significant difference in the median OS (mOS) between the two groups was observed (EGFRm ΔCt ≤8.11 vs. >8.11: not reached vs. 11.0 months; log-rank P = 0.024). Patients were divided into mutation clearance (MC) group and mutation incomplete clearance (MIC) group according to whether the ΔCt value of EGFRm test turned negative after 1 month of treatment. We found that there was also a significant difference in mOS (not reached vs. 10.4 months; log-rank P = 0.021) between MC group and MIC group. Although there was no significant difference in PFS between the two groups, the two curves were separated and the PFS of MC group tended to be higher than the MIC group (not reached vs. 27.5 months; log-rank P = 0.088). Furthermore, EGFRm-positive patients were divided into two groups according to the cut-off of the changes in ΔCt value of EGFRm after 1 month of treatment, which was set at 4.89. A significant difference in the mOS between the two groups was observed (change value of ΔCt >4.89 vs. ≤4.89: not reached vs. 11.0 months; log-rank P = 0.014).
CONCLUSIONS
Detecting EGFRm in ctDNA using R-superARMS can identify patients who are more likely sensitive to targeted therapy, reflect the molecular load of patients, and predict the therapeutic efficacy and clinical outcomes of patients.
Adenocarcinoma of Lung/genetics*
;
Circulating Tumor DNA/genetics*
;
ErbB Receptors/genetics*
;
Humans
;
Lung Neoplasms/genetics*
;
Mutation/genetics*
;
Protein Kinase Inhibitors
9.Relations of expressions of serum hypoxia inducible factor 2α and miR-21 with cerebral vasospasm in patients with aneurysmal subarachnoid hemorrhage after interventional embolization
Dong WANG ; Huanli WU ; Fei GAO ; Linkun LI ; Xiaoying JIU ; Haiyang ZHAO
Chinese Journal of Neuromedicine 2021;20(4):340-345
Objective:To investigate the relations of serum hypoxia inducible factor 2α (HIF-2α) and miR-21 expressions with cerebral vasospasm in patients with aneurysmal subarachnoid hemorrhage (aSAH) after interventional embolization.Methods:One hundred and seventy-four patients with aSAH underwent interventional embolization in our hospital from October 2017 to June 2019 were prospectively selected. DSA examination was performed 4 d after surgery, and severity of cerebral vasospasm was evaluated. Enzyme-linked immunosorbent assay was used to detect the level of serum HIF-2α and reverse transcription-PCR was employed to detect the serum miR-21 expression before and 3 and 7 d after interventional embolization. The clinical data and changes of serum HIF-2α and miR-21 expressions in patients with different degrees of cerebral vasospasm were compared. Correlation analysis was performed to analyze the relation of HIF-2α expression with miR-21 expression 3 and 7 d after interventional embolization. Receiver operating characteristics curve was used to analyze the diagnostic values of serum HIF-2α and miR-21 levels in cerebral vasospasm 3 d after interventional embolization.Results:There were 100 patients without vasospasm, and 20, 38 and 16 patients with mild, moderate and severe cerebral vasospasm, respectively. The serum levels of HIF-2α and miR-21 in patients with mild, moderate and severe cerebral vasospasm increased successively 3 and 7 d after interventional embolization, with significant differences ( P<0.05). Positive correlation was noted between expressions of HIF-2α and miR-21 in serum 3 and 7 d after interventional embolization ( P<0.05). Area under the curve (AUC) of HIF-2α in diagnosis of cerebral vasospasm was 0.748 ( 95%CI: 0.615-0.883, P=0.000) 3 d after interventional embolization. AUC of serum miR-21 level in diagnosis of cerebral vasospasm was 0.715 ( 95%CI: 0.590-0.842, P=0.000). AUC of serum HIF-2α combined with miR-21 in diagnosis of cerebral vasospasm was 0.893 ( 95%CI: 0.792-0.985, P=0.000). When diagnostic critical points of HIF-2α and miR-21 were 82.75 pg/mL and 1.15, the sensitivity, accuracy and negative predictive value of HIF-2α combined with miR-21 in the diagnosis of cerebral vasospasm were higher than those of HIF-2α or miR-21 alone. Conclusion:The expressions of serum HIF-2α and miR-21 in patients with aSAH after interventional embolization can effectively predict the occurrence of cerebral vasospasm, and may be involved in the occurrence and development of cerebral vasospasm.
10. Identification of a novel coronavirus causing severe pneumonia in human: a descriptive study
Li Li REN ; Ye Ming WANG ; Zhi Qiang WU ; Zi Chun XIANG ; Li GUO ; Teng XU ; Yong Zhong JIANG ; Yan XIONG ; Yong Jun LI ; Hui LI ; Guo Hui FAN ; Xiao Ying GU ; Yan XIAO ; Hong GAO ; Jiu Yang XU ; Fan YANG ; Xin Ming WANG ; Chao WU ; Lan CHEN ; Yi Wei LIU ; Bo LIU ; Jian YANG ; Jie DONG ; Li LI ; Chao Lin HUANG ; Jian Ping ZHAO ; Yi HU ; Zhen Shun CHENG ; Lin Lin LIU ; Zhao Hui QIAN ; Chuan QIN ; Qi JIN ; Bin CAO ; Jian Wei WANG
Chinese Medical Journal 2020;133(0):E001-E001
Background: Human infections with zoonotic coronaviruses (CoVs), including severe acute respiratory syndrome (SARS)-CoV and Middle East respiratory syndrome (MERS)-CoV, have raised great public health concern globally. Here, we report a novel bat-origin CoV causing severe and fatal pneumonia in humans. Methods: We collected clinical data and bronchoalveolar lavage (BAL) specimens from five patients with severe pneumonia from Jin Yin-tan Hospital, Wuhan, Hubei province, China. Nucleic acids of the BAL were extracted and subjected to next-generation sequencing. Virus isolation was carried out, and maximum-likelihood phylogenetic trees were constructed. Results: Five patients hospitalized from December 18 to December 29, 2019 presented with fever, cough, and dyspnea accompanied by complications of acute respiratory distress syndrome. Chest radiography revealed diffuse opacities and consolidation. One of these patients died. Sequence results revealed the presence of a previously unknown β-CoV strain in all five patients, with 99.8–99.9% nucleotide identities among the isolates. These isolates showed 79.0% nucleotide identity with the sequence of SARS-CoV (GenBank NC_004718) and 51.8% identity with the sequence of MERS-CoV (GenBank NC_019843). The virus is phylogenetically closest to a bat SARS-like CoV (SL-ZC45, GenBank MG772933) with 87.6–87.7% nucleotide identity, but is in a separate clade. Moreover, these viruses have a single intact open reading frame gene 8, as a further indicator of bat-origin CoVs. However, the amino acid sequence of the tentative receptor-binding domain resembles that of SARS-CoV, indicating that these viruses might use the same receptor. Conclusion: A novel bat-borne CoV was identified that is associated with severe and fatal respiratory disease in humans.

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