1.Advances in transporting critical ill neonates
Mengyu CHEN ; Xirong GAO ; Yunqin WU
Chinese Pediatric Emergency Medicine 2017;24(7):541-545
In order to understand the status of neonatal transport research at home and abroad,we summarized and analyzed the research progress of neonatal transport through the literature search.Thus we evaluated the current application of a variety of transport critical rating system.Intrauterine transport is considered the safest mode of transport,and promote intrauterine transport of high-risk mothers.It is suggested that the parents participate in the transshipment process and return the stable children to the local hospital for further treatment and promote the family-centered treatment mode.In transit,mobile ECMO,hypothermia and other advanced equipment in foreign countries have been applied.It is recommended to use the respiratory function monitor to monitor the respiration during transit.It can provide the parameters of respiratory wave,identify air leak,accidental release,spontaneous breathing.
2.Effect of Active Components of Zhi Ga ncao Decoction and Their Combinatio n on Triggered Activity and Myocar-dial Damage in Isolated Ischemia -reperfusion Rat Heart
Xinggao LI ; Qi CHEN ; Mengyu HUANG ; Ming BI ; Lanyin CHEN
Traditional Chinese Drug Research & Clinical Pharmacology 1993;0(01):-
Objective To observe the effect of active components(glycyrrhizic acid monoaminate,total ginsenoside and to-tal ophiopogonoside)of Zhi Gancao Decoction(ZGD)and their combination on the triggered activity and myocardial dam-age in the isolated ischemia -reperfusion rat heart.Methods Isolated rat heart was treated with L angendroff perfusion and monophase action potential technology was applied.Results &Conclusion Total extract of ZGD,single active c omponents and their combination can markedly l ower the incidence of cardiac triggered activity,prevent the myocardiu m from injury and decrease the incidence of arrhythmia induced by ischemia -reperfusion in rats and the effects of their com bination are positively related to the doses.
3.Advances in Parvovirus Non-structural Protein NS1 Induced Apoptosis.
Mengyu TU ; Fei LIU ; Shun CHEN ; Mingshu WANG ; Anchun CHENG
Chinese Journal of Virology 2015;31(6):679-684
Until now, more than seventeen parvovirus have been reported which can infect mammals and poultries. The infected cells appeared different properties of apoptosis and death, present a typical cytopathic effect. NS1 is a major nonstructural protein of parvovirus, with a conservative structure and function, which plays an important role in the viral life cycle. In addition to the influence on viral replication, the NS1 also participates in apoptosis induced by viruses. Parvovirus induced apoptosis which is mainly mediated by mitochondrial pathway, this review summarized the latest research progresses of parvovirus induced apoptosis.
Animals
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Apoptosis
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Humans
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Parvoviridae Infections
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physiopathology
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veterinary
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virology
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Parvovirus
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genetics
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metabolism
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Viral Nonstructural Proteins
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genetics
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metabolism
4.Voxel-based analysis of diffusion tensor indices in the brain of the patients with type Ⅱ diabetes mellitus
Zhiye CHEN ; Jinfeng LI ; Mengyu LIU ; Lin MA
Chinese Journal of Radiology 2013;47(9):811-815
Objective To evaluate early occult brain damage by diffusion tensor imaging in patients with type Ⅱ diabetes mellitus.Methods High resolution three-dimensional T1-weighted fast spoiled gradient recalled echo MRI images and diffusion tensor imaging were obtained from 16 patients with type Ⅱ diabetes mellitus (T2DM) and 16 normal controls (NC).Average apparent diffusion coefficient (ADC) map and fractional anisotropy (FA) map were calculated and analyzed with voxel-based analysis.Analysis of covariance was performed to compare ADC and FA between T2DM and NC.Results Increased ADC values of gray matter were demonstrated in right superior temporal gyrus,middle frontal gyrus,anterior cingulate gyrus,middle cingulate gyrus,inferior occipital gyrus,and left lingual gyrus,operculum orbitale,fusiform gyrus and parahippocampal gyrus in T2DM (voxel numbers in clusters were 176-3125,P < 0.01).And increased ADC values of white matter were demonstrated in the regions of right middle temporal lobe,linual lobe,middle frontal lobe,calcarine gyrus,superior parietal lobe,and left operculum orbitale in T2DM patients compared with NC (voxel numbers in clusters were 200-781,P < 0.01).Decreased FA values of gray natter were mainly located in left thalamus,bilateral caudate nuclei and right cuneus in T2DM(voxel numbers in clusters were 210-1402,P <0.01).Decreased FA values of white matter were demonstrated in the regions of right cuneus and the body of corpus callosum in T2DM (voxel numbers in clusters were 206,253,P < 0.01).Conclusions The occult brain damage is demonstrated as increased ADC values and decreased FA values in regional brain parenchyma in type Ⅱ diabetes mellitus.Voxel-based analysis of diffusion tensor indices may be a simple and effective tool for the evaluation of occult brain damage in type]][diabetes mellitus.
5.Volume changes of cortical and subcortical reward circuitry in the brain of patients with type 2 diabetes mellitus.
Zhiye CHEN ; Jinfeng LI ; Mengyu LIU ; Lin MA
Journal of Southern Medical University 2013;33(9):1265-1272
OBJECTIVETo elucidate the volume changes of cortical and subcortical reward circuitry in patients with type 2 diabetes mellitus.
METHODSHigh-resolution three-dimensional T1-weighted fast spoiled gradient recalled echo MRI images were obtained from 16 patients with type 2 diabetes mellitus and 16 normal controls, and 11 type 2 diabetic patients also received the same MRI scans after insulin therapy for 1 year. Volumetric analysis was performed and analysis of covariance and paired t test were applied.
RESULTSA decreased volume was found in the left insular lobe, left nucleus accumbens area, right hippocampus, putamen and amygdala in type 2 diabetic patients compared with normal controls (P<0.05). After insulin therapy for 1 year, an increased volume of bilateral cortical reward structures was observed (left, 33.65∓3.66 ml; right, 33.35∓4.25 ml) compared the baseline level (left, 31.45∓2.90 ml; right, 31.12∓2.97 ml) in diabetic patients (P<0.05). No significant volume change in the bilateral basal ganglia structures was found after insulin therapy for 1 year (P>0.05), and bilateral ventral diencephalon area showed an increased volume after the treatment (left, 3.26∓0.68 ml; right, 3.20∓0.78 ml) compared with the baseline (left, 2.96∓0.76 ml; right, 2.82∓0.90 ml)(P<0.05).
CONCLUSIONType 2 diabetic patients have a decreased volume of the cortical and subcortical reward circuitry, and insulin therapy can reverse such changes and improve the damage of reward circuitry.
Aged ; Cerebral Cortex ; pathology ; Diabetes Mellitus, Type 2 ; drug therapy ; pathology ; Entorhinal Cortex ; pathology ; Female ; Humans ; Insulin ; therapeutic use ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Nucleus Accumbens ; pathology
6.Structural connectivity between visual cortex and auditory cortex in healthy adults: a diffusion tensor imaging study.
Zhiye CHEN ; Jinfeng LI ; Mengyu LIU ; Lin MA
Journal of Southern Medical University 2013;33(3):338-341
OBJECTIVETo investigate the structural connectivity between visual cortex and auditory cortex in healthy adults.
METHODSDiffusion tensor imaging was performed to examine the brain of 21 healthy adult subjects. The structural connectivity was calculated based on fractional anisotropy (FA) value of the visual and auditory cortices, and fiber tracking was performed between the visual cortex and auditory cortex.
RESULTSPositive structural connectivity was demonstrated between the bilateral visual cortices, and between the bilateral auditory cortices. Ipsilateral primary auditory cortex presented a negative structural connectivity with the ipsilateral visual cortex, and a positive structural connectivity with the contralateral visual cortex. A positive connectivity was demonstrated between the secondary auditory cortex and visual cortex. Tracking analysis showed fiber connectivity between the bilateral visual cortices, and between the ipsilateral auditory and visual cortices.
CONCLUSIONIntrinsic structural connectivity is present between the visual cortex and auditory cortex in the brain of healthy adults.
Adult ; Auditory Cortex ; anatomy & histology ; Diffusion Tensor Imaging ; Female ; Humans ; Male ; Visual Cortex ; anatomy & histology ; Young Adult
7.Age-related changes in resting functional connectivity of the marginal division of the neostriatum in healthy adults.
Zhiye CHEN ; Jinfeng LI ; Mengyu LIU ; Lin MA
Journal of Southern Medical University 2013;33(1):74-79
OBJECTIVETo investigate the age-related changes in resting functional connectivity of the marginal division (MrD) of the neostriatum in healthy adults detected using resting-state functional magnetic resonance imaging (rs-fMRI).
METHODSForty-four healthy volunteers aged between 22 and 44 years (mean 30.36∓6.31 years) and 20 elderly volunteers aged between 48-83 years (mean 61.4∓10.25 years) underwent conventional MRI, 3D structural MRI and rs-fMRI. MrD was defined manually on the structural images for computation of the functional connectivity maps. The single group data were analyzed with independent sample t test, and the data of the two-group were examined by analysis of covariance with gender as the covariance.
RESULTSIn the young volunteers, the brain regions of functional connectivity related with the MrD were located in bilateral middle cingulate gyri, putamen, thalamus and amygdala, as compared with the brain regions of the bilateral putamen, thalamus, amygdala, insular cortex, rolandic operculum and right supramarginal gyrus in the elderly volunteers. Compared with the young volunteers, the elderly volunteers showed decreased functional connectivity related with the MrD in the bilateral middle cingulate gyri, parahippocampal gyri and left hippocampus.
CONCLUSIONAn increased age is associated with alterations in the functional connectivity related with the MrD in healthy adults.
Adult ; Age Factors ; Aged ; Aged, 80 and over ; Female ; Humans ; Limbic System ; physiology ; Magnetic Resonance Imaging ; methods ; Male ; Middle Aged ; Neural Pathways ; Rest ; Young Adult
8.Resting-state brain functional magnetic resonance imaging in patients with type 2 diabetes mellitus.
Zhiye CHEN ; Mengqi LIU ; Mengyu LIU ; Lin MA
Journal of Southern Medical University 2014;34(8):1083-1091
OBJECTIVETo evaluate early occult brain functional damage in patients with type 2 diabetes mellitus using resting-state functional magnetic resonance imaging (MRI).
METHODSHigh-resolution three-dimensional T1-weighted fast spoiled gradient recalled echo MRI and resting-state functional MRI images were obtained from 18 patients with type 2 diabetes mellitus and 18 normal control subjects. Regional homogeneity (ReHo) map, amplitude of low-frequency fluctuation (ALFF) map, and functional connectivity map of the bilateral hippocampus and posterior cingulate gyrus were calculated and voxel-based analysis was performed using two-sample t-test.
RESULTSIn type 2 diabetic patients, decreased ReHo was deteted in the right thalamus, hippocampus, olfactory cortex and left putamen as compared with the normal controls. The decreased ALFF was found mainly in the left middle frontal gyrus, right supramarginal gyrus and middle occipital gyrus in the diabetic patients. The patients showed reduced functional connectivity between the bilateral hippocampus but not between the bilateral posterior gyrus and the other brain regions.
CONCLUSIONThe occult brain damage is featured by decreased ReHo and ALFF in multiple brain regions and reduced functional connectivity between the bilateral hippocampus in type 2 diabetic patients.
Brain ; pathology ; Brain Injuries ; Brain Mapping ; Case-Control Studies ; Diabetes Mellitus, Type 2 ; pathology ; Frontal Lobe ; Gyrus Cinguli ; Hippocampus ; Humans ; Imaging, Three-Dimensional ; Magnetic Resonance Imaging
9.The Disease Spectrum and Natural History of Patients With Abdominal Bloating or Distension:A Longitudinal Study
Fangfei CHEN ; Niandi TAN ; Songfeng CHEN ; Qianjun ZHUANG ; Mengyu ZHANG ; Yinglian XIAO
Journal of Neurogastroenterology and Motility 2024;30(1):64-72
Background/Aims:
Abdominal bloating or distension (AB/D) is a common complaint in the outpatient of gastroenterology department. Since the potential contributors are numerous and complex, a longitudinal study on the disease spectrum and natural history of patients was performed to better understand the key factors of AB/D.
Methods:
Consecutive patients with the chief complaint of AB/D referred to the outpatient clinic were screened. Functional gastrointestinal disorders (FGIDs) were diagnosed according to Rome IV criteria. A 3-year follow-up was performed to seek for the changes in symptoms as well as disease spectrum.
Results:
A total of 261 participants were enrolled and 139 completed the follow-up. Most patients suffered from moderate to severe symptoms more than 1 day per week. Common causes of AB/D were FGIDs (51.7%) and organic diseases (17.2%). The latter group was older with lower body mass index (BMI). Functional dyspepsia was the most common type of FGIDs in AB/D. The symptoms of 18.0% of participants failed to improve at the end of the 3-year follow-up, and those diagnosed with FGIDs were most likely to continue to suffer. Abdominal pain was a positive predictive factor for good prognosis in the FGIDs group. Besides, only 22.7% of participants had a consistent diagnosis of FGIDs during follow-up.
Conclusions
FGIDs are the most common diagnosis in patients with AB/D. Symptoms were especially hard to be improved. Classification diagnoses of FGIDs in AB/D patients fluctuated significantly over time.
10.Acid Exposure Time > 6% Might Not Improve the Therapeutic Outcome in Chinese Gastroesophageal Reflux Disease Patients
Yuqing LIN ; Yuwen LI ; Mengya LIANG ; Niandi TAN ; Mengyu ZHANG ; Songfeng CHEN ; Yinglian XIAO
Journal of Neurogastroenterology and Motility 2021;27(1):55-62
Background/Aims:
There is less acid burden in Chinese gastroesophageal reflux disease (GERD) patients. However, the Lyon consensus proposed a higher threshold of acid exposure time (AET > 6%) for GERD. The aims are to apply the updated criteria in Chinese GERD patients and clarify its influence on clinical outcome.
Methods:
Patients who were referred for both esophageal high-resolution manometry and 24-hour esophageal pH monitoring due to reflux symptoms were retrospectively screened. Those patients with AET > 4% was included and grouped into either AET 4-6% or AET > 6%. Their manometric profile, reflux profile, and response to proton pump inhibitors (PPIs) were evaluated. Adjunctive evidence proposed in the Lyon consensus was added in patients with AET 4-6% for therapeutic gain. Another group of patients (n = 144) with AET < 4% were included as non-GERD patients.
Results:
In total, 151 patients (102 males) were included with 113 patients AET > 6% (74.9%). GERD patients with AET > 4% were with more male, older patients, and higher body mass index compared with non-GERD patients. Meanwhile, GERD patients were less competent in esophagogastric junction pressure. However, the manometric and reflux profile were similar between patients with AET > 6% and 4-6%. The response rate of PPI therapy was 64.6% and 63.2%, respectively, in groups of AET > 6% and 4-6% (P > 0.05). When adjunctive evidence was added in patients with AET 4-6%, no therapeutic gain was obtained.
Conclusions
The efficacy of PPI therapy was similar in patients with AET > 6% and 4-6%. The increase of the AET threshold did not influence the clinical outcome of Chinese GERD patients.