Imperial College London

Professor Daqing Ma, MD, PhD

Faculty of MedicineDepartment of Surgery & Cancer

Professor of Anaesthesia
 
 
 
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Contact

 

+44 (0)20 3315 8495d.ma Website

 
 
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Assistant

 

Miss Steffi Klier +44 (0)20 3315 8816

 
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Location

 

G3.44Chelsea and Westminster HospitalChelsea and Westminster Campus

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Summary

 

Publications

Publication Type
Year
to

372 results found

Zhu Y, Zhou M, Jia X, Zhang W, Shi Y, Bai S, Rampes S, Vizcaychipi MP, Wu C, Wang K, Ma D, Yang Q, Wang Let al., 2023, Inflammation Disrupts the Brain Network of Executive Function after Cardiac Surgery., Ann Surg, Vol: 277, Pages: e689-e698

OBJECTIVE: To investigate postoperative functional connectivity (FC) alterations across impaired cognitive domains and their causal relationships with systemic inflammation. BACKGROUND: Postoperative cognitive dysfunction commonly occurs after cardiac surgery, and both systemic and neuroinflammation may trigger its development. Whether FC alterations underlying deficits in specific cognitive domains after cardiac surgery are affected by inflammation remains unclear. METHODS: Seventeen patients, who underwent cardiac valve replacement, completed a neuropsychological test battery and brain MRI scan before surgery and on days 7 and 30 after surgery compared to age-matched healthy controls. Blood samples were taken for tumor necrosis factor-a and interleukin-6 measurements. Seed-to-voxel FC of the left dorsolateral prefrontal cortex (DLPFC) was examined. Bivariate correlation and linear regression models were used to determine the relationships among cognitive function, FC alterations, and cytokines. RESULTS: Executive function was significantly impaired after cardiac surgery. At day 7 follow-up, the surgical patients, compared to the controls, demonstrated significantly decreased DLPFC FC with the superior parietal lobe and attenuated negative connectivity in the default mode network, including the angular gyrus and posterior cingulate cortex. The left DLPFC enhanced the connectivity in the right DLPFC and posterior cingulate cortex, all of which were related to the increased tumor necrosis factor-a and decreased executive function up to day 7 after cardiac surgery. CONCLUSIONS: The decreased FC of executive control network and its anticorrelation with the default mode network may contribute to executive function deficits after cardiac surgery. Systemic inflammation may trigger these transient FC changes and executive function impairments.

Journal article

Pan W-T, Liu P-M, Ma D, Yang J-Jet al., 2023, Advances in photobiomodulation for cognitive improvement by near-infrared derived multiple strategies., J Transl Med, Vol: 21

Cognitive function is an important ability of the brain, but cognitive dysfunction can easily develop once the brain is injured in various neuropathological conditions or diseases. Photobiomodulation therapy is a type of noninvasive physical therapy that is gradually emerging in the field of neuroscience. Transcranial photobiomodulation has been commonly used to regulate neural activity in the superficial cortex. To stimulate deeper brain activity, advanced photobiomodulation techniques in conjunction with photosensitive nanoparticles have been developed. This review addresses the mechanisms of photobiomodulation on neurons and neural networks and discusses the advantages, disadvantages and potential applications of photobiomodulation alone or in combination with photosensitive nanoparticles. Photobiomodulation and its associated strategies may provide new breakthrough treatments for cognitive improvement.

Journal article

Ye R, Lin Q, Xiao W, Mao L, Zhang P, Zhou L, Wu X, Jiang N, Zhang X, Zhang Y, Ma D, Huang J, Wang X, Deng Let al., 2023, miR-150-5p in neutrophil-derived extracellular vesicles associated with sepsis-induced cardiomyopathy in septic patients, CELL DEATH DISCOVERY, Vol: 9

Journal article

Li P, Wang Y, Li H, Cheng B, Wu S, Ye H, Ma D, Fang Xet al., 2023, Prediction of postoperative infection in elderly using deep learning-based analysis: an observational cohort study, AGING CLINICAL AND EXPERIMENTAL RESEARCH, ISSN: 1594-0667

Journal article

Liao Z, Ou X, Zhou C, Ma D, Zhao H, Huang Het al., 2022, Xenon attenuated neonatal lipopolysaccharide exposure induced neuronal necroptosis and subsequently improved cognition in juvenile rats, Frontiers in Pharmacology, Vol: 13

Background: Neonatal sepsis is known to cause neurodevelopment impairment and has been reported to increase risks for neurological/psychiatric disorders. In this study, we investigated the effect of xenon, a well-known potent neuroprotective gas, on neonatal sepsis-induced neurodevelopment impairment in rats together with underlying mechanism by focusing on receptor-interacting protein kinase (RIP) mediated neuronal necroptosis. Methods: 3-day-old Sprague–Dawley rat pups were exposed to either 70% xenon or N2 balanced with O2 for 6 h, during which lipopolysaccharide (LPS) was injected intraperitoneally for 3 times (500 μg/kg for the 1st and 250 μg/kg for the second and third dose; n = 6–10/group). In another cohort of 3-day-old rat pups, intracerebroventricular injection of necrostatin-1 (4μg in 4μl saline, a RIP-1-targeted inhibitor of necroptosis) was performed 20 min after the third dose of LPS. The learning ability and memory were assessed 25 days after LPS injection. Then, their hippocampus was collected for neuronal necroptosis with RIP and MIKL assessments using western blot and in situ immunostaining. Systemic and neuro-inflammation was also assessed. Results: LPS insult resulted in elevation of pro-inflammatory cytokine TNF-? and IL-6, caused neuronal necroptosis and damaged synaptic integrity at the brain developing stage, which finally led to the long-term cognitive impairment. Xenon inhibited necroptosis associated mediator RIP-1, RIP-3, and MLKL activation, protected neurons and attenuated cognitive dysfunction induced by LPS. Like xenon, the similar pattern changes induced by a RIP-1 inhibitor Necrostatin-1 were also found. Conclusion: This study indicates that necroptosis is involved in neonatal sepsis-induced neurofunctional impairments and xenon may be a novel therapeutic strategy to prevent/treat cognitive impairment in neonatal septic patients.

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Wong R, Zhang Y, Zhao H, Ma Det al., 2022, Circular RNAs in organ injury: recent development, JOURNAL OF TRANSLATIONAL MEDICINE, Vol: 20

Journal article

Zhao T, Shi Z, Ling N, Qin J, Zhou Q, Wu L, Wang Y, Lin C, Ma D, Song Xet al., 2022, Sevoflurane Ameliorates Schizophrenia in a Mouse Model and Patients: A Pre-Clinical and Clinical Feasibility Study., Curr Neuropharmacol, Vol: 20, Pages: 2369-2380

BACKGROUND: GABAergic deficits have been considered to be associated with the pathophysiology of schizophrenia, and hence, GABA receptors subtype A (GABAARs) modulators, such as commonly used volatile anesthetic sevoflurane, may have therapeutic values for schizophrenia. The present study investigates the therapeutic effectiveness of low-concentration sevoflurane in MK801-induced schizophrenia-like mice and schizophrenia patients. METHODS: Three weeks after MK801 administration (0.5 mg kg-1, i.p. twice a day for 5 days), mice were exposed to 1% sevoflurane 1hr/day for 5 days. Behavioral tests, immunohistochemical analysis, western blot assay, and electrophysiology assessments were performed 1-week post-exposure. Ten schizophrenia patients received 1% sevoflurane 5 hrs per day for 6 days and were assessed with the Positive and Negative Syndrome Scale (PANSS) and the 18-item Brief Psychiatric Rating Scale (BPRS-18) at week 1 and week 2. RESULTS: MK801 induced hypolocomotion and social deficits, downregulated expression of NMDARs subunits and postsynaptic density protein 95 (PSD95), reduced parvalbumin - and GAD67-positive neurons, altered amplitude and frequency of mEPSCs and mIPSCs, and increased the excitation/inhibition ratio. All these changes induced by MK-801 were attenuated by sevoflurane administration. Six and eight patients achieved a response defined as a reduction of at least 30% in the PANSS total score at 1st and 2nd week after treatments. The BPRS-18 total score was found to be significantly decreased by 38% at the 2nd week (p < 0.01). CONCLUSION: Low-concentration sevoflurane effectively reversed MK801-induced schizophrenialike disease in mice and alleviated schizophrenia patients' symptoms. Our work suggests sevoflurane to be a valuable therapeutic strategy for treating schizophrenia patients.

Journal article

Yang Z, Pan X, Wu X, Lin Q, Chen Y, Cai S, Zhang Y, Mai Z, Ahmad N, Ma D, Deng Let al., 2022, TREM-1 induces pyroptosis in cardiomyocytes by activating NLRP3 inflammasome through the SMC4/NEMO pathway, FEBS JOURNAL, ISSN: 1742-464X

Journal article

Hu C, Wang B, Liu Z, Chen Q, Ishikawa M, Lin H, Lian Q, Li J, Li J, Ma Det al., 2022, Sevoflurane but not propofol enhances ovarian cancer cell biology through regulating cellular metabolic and signaling mechanisms, CELL BIOLOGY AND TOXICOLOGY, ISSN: 0742-2091

Journal article

Iwasaki M, Zhao H, Hu C, Saito J, Wu L, Sherwin A, Ishikawa M, Sakamoto A, Buggy D, Ma Det al., 2022, The differential cancer growth associated with anaesthetics in a cancer xenograft model of mice: mechanisms and implications of postoperative cancer recurrence, CELL BIOLOGY AND TOXICOLOGY, ISSN: 0742-2091

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Lin JA, Ma D, Wu SY, 2022, Editorial: Impact of anesthetics on cancer behavior and outcome, Frontiers in Pharmacology, Vol: 13

Journal article

Liu F, Duan M, Fu H, Zhao G, Han Y, Lan F, Ahmed Z, Cao G, Li Z, Ma D, Wang Tet al., 2022, Orthopedic Surgery Causes Gut Microbiome Dysbiosis and Intestinal Barrier Dysfunction in Prodromal Alzheimer Disease Patients A Prospective Observational Cohort Study, ANNALS OF SURGERY, Vol: 276, Pages: 270-280, ISSN: 0003-4932

Journal article

Deng C-M, Ding T, Liu Z-H, He S-T, Ma J-H, Xu M-J, Wang L, Li M, Liang W-L, Li X-Y, Ma D, Wang D-Xet al., 2022, Impact of maternal neuraxial labor analgesia exposure on offspring's neurodevelopment: A longitudinal prospective cohort study with propensity score matching, FRONTIERS IN PUBLIC HEALTH, Vol: 10

Journal article

Chen J, Liu S, Wang X, Huang J, Phillips J, Ma D, Ouyang W, Tong Jet al., 2022, HDAC6 Inhibition Alleviates Anesthesia and Surgery-Induced Less Medial Prefrontal-Dorsal Hippocampus Connectivity and Cognitive Impairment in Aged Rats, MOLECULAR NEUROBIOLOGY, Vol: 59, Pages: 6158-6169, ISSN: 0893-7648

Journal article

Shen S, Liu K, Li S, Rampes S, Yang Y, Huang Y, Tang J, Xia Z, Ma D, Zhang Let al., 2022, N6-methyladenosine modulates long non-coding RNA in the developing mouse heart., Cell Death Discov, Vol: 8, ISSN: 2058-7716

Long non-coding RNAs (lncRNAs) were reported to potentially play a regulatory role in the process of myocardial regeneration in the neonatal mouse. N6-methyladenosine (m6A) modification may play a key role in myocardial regeneration in mice and regulates a variety of biological processes through affecting the stability of lncRNAs. However, the map of m6A modification of lncRNAs in mouse cardiac development still remains unknown. We aimed to investigate the differences in the m6A status of lncRNAs during mouse cardiac development and reveal a potential role of m6A modification modulating lncRNAs in cardiac development and myocardial regeneration during cardiac development in mice. Methylated RNA immunoprecipitation sequencing (MeRIP-seq) and RNA sequencing (RNA-seq) of the heart tissue in C57BL/6 J mice at postnatal day 1 (P1), P7 and P28 were performed to produce stagewise cardiac lncRNA m6A-methylomes in a parallel timeframe with the established loss of an intrinsic cardiac regeneration capacity and early postnatal development. There were significant differences in the distribution and abundance of m6A modifications in lncRNAs in the P7 vs P1 mice. In addition, the functional role of m6A in regulating lncRNA levels was established for selected transcripts with METTL3 silencing in neonatal cardiomyocytes in vitro. Based on our MeRIP-qPCR experiment data, both lncGm15328 and lncRNA Zfp597, that were not previously associated with cardiac regeneration, were found to be the most differently methylated at P1-P7. These two lncRNAs sponged several miRNAs which further regulated multiple mRNAs, including some of which have previously been linked with cardiac regeneration ability. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analysis revealed that differential m6A modifications were more enriched in functions and cellular signalling pathways related to cardiomyocyte proliferation. Our data suggested that the m6A modification on lncRNAs may play an import

Journal article

Alam A, Ma D, 2022, Is it time to assess neurological status before surgery to improve postoperative outcomes?, Annals of Surgery, Vol: 275, Pages: 644-645, ISSN: 0003-4932

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Hu C, Ma D, 2022, Specifications and suggestions for general anesthesia and analgesia in experimental animals, Chinese Journal of Anesthesiology, Vol: 42, Pages: 257-259, ISSN: 0254-1416

Journal article

Yang X, Li Z, Wang B, Pan Y, Jiang C, Zhang X, Yang Y, Zhou C, Hu C, Zhang Z, Xu H, Liao W, Vizcaychipi MP, Sanders RD, Li Y, Ma D, Peng Zet al., 2022, Prognosis and antibody profiles in survivors of critical illness from COVID-19: a prospective multicentre cohort study., British Journal of Anaesthesia, Vol: 128, Pages: 491-500, ISSN: 0007-0912

BACKGROUND: There is a need to assess the long-term outcomes of survivors of critical illness from COVID-19. METHODS: Ninety-two survivors of critical illness from COVID-19 from four hospitals in Hubei Province, China participated in this prospective cohort study. Multiple characteristics, including lung function (lung volumes, diffusing capacity for carbon monoxide, chest computed tomography scores, and walking capacity); immune status (SARS-CoV-2-neutralising antibody and all subtypes of immunoglobulin (Ig) G against SARS-CoV-2, immune cells in response to ex vivo antigen peptide stimuli, and lymphocyte count and its subtypes); liver, coagulation, and kidney functions; quality of life; cognitive function; and mental status, were assessed after 3, 6, and 12 months of follow-up. RESULTS: Amongst the 92 enrolled survivors, 72 (78%) patients required mechanical ventilation. At 12 months, the predicted percentage diffusing capacity of lung for carbon monoxide was 82% (inter-quartile range [IQR]: 76-97%) with a residual volume of 77 (64-88)%. Other lung function parameters and the 6-min walk test improved gradually over time and were almost back to normal by 12 months. The titres of IgG and neutralising antibody to COVID-19 remained high at 12 months compared with those of controls who were not infected with COVID-19, although IgG titres decreased significantly from 34.0 (IQR: 23.8-74.3) to 15.0 (5.8-24.3) AU ml-1 (P<0.001), whereas neutralising antibodies decreased from 29.99 (IQR: 19.43-53.93) AU ml-1 at 6 months to 19.75 (13.1-29.8) AU ml-1 (P<0.001) at 12 months. In general, liver, kidney, physical, and mental functions also improved over time. CONCLUSIONS: Survivors of critical illness from COVID-19 show some persistent long-term impairments in lung function. However, a majority of these tests were normal by 12 months. These patients still had detectable levels of neutralising antibodies against SARS-CoV-2 and all types of IgG at 12 months, but the level

Journal article

Hu J, Lv B, West R, Chen X, Yan Y, Soo CP, Ma Det al., 2022, Comparison between dexmedetomidine and propofol on outcomes after coronary artery bypass graft surgery: a retrospective study, BMC ANESTHESIOLOGY, Vol: 22, ISSN: 1471-2253

Journal article

Li X, Zhou B, Yang H, Yang X, Zhao Z, Pan Z, Liao X, Jian W, Liu Y, Lu H, Xue Q, Luo Y, Yu B, Huang H, Ma D, Liu Zet al., 2022, Phosphorylation at Ser 727 Increases STAT3 Interaction with PKC epsilon Regulating Neuron-Glia Crosstalk via IL-6-Mediated Hyperalgesia In Vivo and In Vitro, MEDIATORS OF INFLAMMATION, Vol: 2022, ISSN: 0962-9351

Journal article

Ma D, 2022, Methionine restriction prevents lipopolysaccharide-inducedacute lung injury via modulating CSE/H2S pathway, Nutrients, Vol: 14, Pages: 1-15, ISSN: 2072-6643

Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) result in high mortality, whereas effective treatments are limited. Methionine restriction (MR) has been reported to offer various benefits against multiple pathological processes of organ injuries. However, it remains unknown whether MR has any potential therapeutic value for ALI/ARDS. The current study was set to investigate the therapeutic potential of MR on lipopolysaccharide (LPS)-induced ALI and its underlying mechanisms. We found that MR attenuated LPS-induced pulmonary edema, hemorrhage, atelectasis, and alveolar epithelial cell injuries in mice. MR upregulated cystathionine-gamma-lyase (CSE) expression and enhanced the production of hydrogen sulfide (H2S). MR also inhibited the activation of Toll-like receptors 4 (TLR4)/NF-κB/NOD-like receptor protein 3 (NLRP3), then reduced IL-1β, IL-6, and TNF-α release and immune cell infiltration. Moreover, the protective effects of MR on LPS-induced ALI were abrogated by inhibiting CSE, whereas exogenous H2S treatment alone mimicked the protective effects of MR in Cse−/− mice after LPS administration. In conclusion, our findings showed that MR attenuated LPS-induced lung injury through CSE and H2S modulation. This work suggests that developing MR towards clinical use for ALI/ARDS patients may be a valuable strategy.

Journal article

Liu L, Sun Q, Davis F, Mao J, Zhao H, Ma Det al., 2022, Epithelial-mesenchymal transition in organ fibrosis development: current understanding and treatment strategies, BURNS & TRAUMA, Vol: 10, ISSN: 2321-3868

Journal article

Chen Q, Qin Z, Sun Y, Liu X, Soo AP, Chang E, Sun Q, Yi B, Wang D-X, Zhao H, Ma D, Gu Jet al., 2022, Dexmedetomidine Activates Akt, STAT6 and IRF4 Modulating Cytoprotection and Macrophage Anti-Inflammatory Phenotype Against Acute Lung Injury in vivo and in vitro, JOURNAL OF INFLAMMATION RESEARCH, Vol: 15, Pages: 2707-2720

Journal article

Li Y, Li J, Shi Y, Zhou X, Feng W, Han L, Ma D, Jiang H, Yuan Yet al., 2022, Urinary Aromatic Amino Acid Metabolites Associated With Postoperative Emergence Agitation in Paediatric Patients After General Anaesthesia: Urine Metabolomics Study., Front Pharmacol, Vol: 13, ISSN: 1663-9812

Background: Emergence agitation (EA) is very common in paediatric patients during recovery from general anaesthesia, but underlying mechanisms remain unknown. This prospective study was designed to profile preoperative urine metabolites and identify potential biomarkers that can predict the occurrence of EA. Methods: A total of 224 patients were screened for recruitment; of those, preoperative morning urine samples from 33 paediatric patients with EA and 33 non-EA gender- and age-matched patients after being given sevoflurane general anaesthesia were analysed by ultra-high-performance liquid chromatography (UHPLC) coupled with a Q Exactive Plus mass spectrometer. Univariate analysis and orthogonal projection to latent structures squares-discriminant analysis (OPLS-DA) were used to analyse these metabolites. The least absolute shrinkage and selection operator (LASSO) regression was used to identify predictive variables. The predictive model was evaluated through the receiver operating characteristic (ROC) analysis and then further assessed with 10-fold cross-validation. Results: Seventy-seven patients completed the study, of which 33 (42.9%) patients developed EA. EA and non-EA patients had many differences in preoperative urine metabolic profiling. Sixteen metabolites including nine aromatic amino acid metabolites, acylcarnitines, pyridoxamine, porphobilinogen, 7-methylxanthine, and 5'-methylthioadenosine were found associated with an increased risk of EA, and they all exhibited higher levels in the EA group than in the non-EA group. The main metabolic pathways involved in these metabolic changes included phenylalanine, tyrosine and tryptophan metabolisms. Among these potential biomarkers, L-tyrosine had the best predictive value with an odds ratio (OR) (95% CI) of 5.27 (2.20-12.63) and the AUC value of 0.81 (0.70-0.91) and was robust with internal 10-fold cross-validation. Conclusion: Urinary aromatic amino acid metabolites are closely associated with EA in paediat

Journal article

Li X, Ma X, Liu Y, Chang E, Cui J, Ma D, Zhang Jet al., 2022, Predictive value of Leukocyte ImmunoTest (LIT™) in cancer patients: a prospective cohort study., Front Oncol, Vol: 12, ISSN: 2234-943X

Early diagnosis of cancer is crucial to initiate prompt treatment for better patient outcomes. The host immune function and its associated modulators are considered to be potential biomarkers for early cancer diagnosis. Immune and immune-checkpoint biomarkers have been reported to contribute to cancer development, while a high neutrophil-to-lymphocyte ratio has been shown to be associated with poor survival outcomes in a variety of cancers. One hundred sixty-one cancer patients were recruited to take a cost-effective novel Leukocyte ImmuneTest (LIT). LIT was measured to objectively determine the pre-treatment immune status of patients. The correlation between LIT and other conventional diagnostic markers or tumor-related variables was then investigated. Significant correlations between LIT and white blood cell count, smoking status, and tumor stage 4 were found. In addition, the LIT score significantly differentiated between malignant and benign tumors in this study population. Our work raises the possibility to use LIT for general screening surveillance before further costly specialized equipment is applied for cancer diagnosis.

Journal article

Juan Z, Chen J, Ding B, Yongping L, Liu K, Wang L, Le Y, Liao Q, Shi J, Huang J, Wu Y, Ma D, Ouyang W, Tong Jet al., 2021, Probiotic supplement attenuates chemotherapy-related cognitive impairment in patients with breast cancer: a randomised, double-blind, and placebo-controlled trial., European Journal of Cancer, Vol: 161, Pages: 10-22, ISSN: 0959-8049

BACKGROUND: Chemotherapy-related cognitive impairment (CRCI) is highly prevalent in patients with cancer and is associated with poor outcomes and quality of life. To date, the management of CRCI remains a clinical challenge. Herein, we aim to determine the preventive effects of probiotics on CRCI development and underlying mechanisms. METHODS: We conducted a randomised, double-blind and placebo-controlled trial (ChiCTR-INQ-17014181) of 159 patients with breast cancer and further investigated the underlying mechanism in a pre-clinical setting. From 2018 to 2019, patients with breast cancer (Stage I-III) who needed adjuvant chemotherapy were screened, enrolled and randomly assigned to receive either probiotics or placebo (three capsules, twice/day) during chemotherapy. Their cognition, anxiety and depression were assessed with well-established assays; their plasma biomarkers, metabolites and faecal microbiota compositions were measured. In addition, the systemic effects of the metabolites found in the clinical trial on long-term potentiation, synapse injury, oxidative stress and glial activation were assessed in rats. RESULTS: Probiotics supplement significantly decreased the incidence of CRCI, improved the allover cognitive functions, changed the gut microbial composition and modulated nine plasma metabolite changes. Among these metabolites, p-Mentha-1,8-dien-7-ol, Linoelaidyl carnitine and 1-aminocyclopropane-1-carboxylic acid were negatively correlated with the occurrence of CRCI. Furthermore, probiotics supplement increased plasma p-Mentha-1,8-dien-7-ol in rats. Administration of exogenous p-Mentha-1,8-dien-7-ol significantly alleviated chemotherapy-induced long-term potentiation impairment, synapse injury, oxidative stress and glial activation in the hippocampus of rats. CONCLUSION: Our data indicated that probiotics supplement prevents the occurrence of CRCI in patients with breast cancer via modulating plasma metabolites, including p-Mentha-

Journal article

Li Y, Wu B, Hu C, Hu J, Lian Q, Li J, Ma Det al., 2021, The role of the vagus nerve on dexmedetomidine promoting survival and lung protection in a sepsis model in rats, EUROPEAN JOURNAL OF PHARMACOLOGY, Vol: 914, ISSN: 0014-2999

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Ma D, 2021, The role of the vagus nerve on Dexmedetomidine promoting survival and lung protection in a sepsis model in rats, European Journal of Pharmacology, ISSN: 0376-6357

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