1. Expression of PTEN regulated by PTENp1 as a "sponge" adsorbed by miR-21 in oral squamous cell carcinoma
Journal of Xi'an Jiaotong University(Medical Sciences) 2020;41(5):713-717
Objective: To explore the role of the new regulator pseudogene phosphatase and tensin homolog pseudogene 1 (PTENp1) in the regulation of PTEN mRNA and gene expression in oral squamous cell carcinoma (OSCC) so as to provide a new target for the prevention, treatment and outcome of OSCC. Methods: First, we collected 42 specimens of OSCC and normal tissues, extracted RNA, detected the expressions of PTENp1, PTEN and miR-21 by qRT-PCR, and studied their correlation by Pearson correlation analysis. HEK293 cells were cultured and transfected with luciferase plasmid of 3'UTR of PTEN and mimic or inhibitor of miR-21 or full-length PTENp1 3'UTR plasmid, respectively. The regulatory role of PTENp1 in PTEN-miR-21 axis and its cancer promoting function were verified by luciferase activity test. Results: qRT-PCR showed that the expressions of PTEN (85.7%) and PTENp1 (90.4%) were significantly repressed in the OSCC tissues while miR-21 expression (76.2%) was remarkably increased. Pearson correlation analysis showed that PTEN expression was negatively correlated with miR-21 expression (R=0.123 5, P<0.001) but positively correlated with PTENp1 expression (R=0.051 8, P=0.01). The results of luciferase activity showed that PTEN expression was significantly up-regulated by overexpression of PTENp1, suggesting that PTENp1 could target competitive binding miR-21 to regulate PTEN expression. Results: PTENp1, as the ceRNA of PTEN, competitively binds the miR-21, which provides a new idea for predicting the early marker and targeting therapy of OSCC in the future.
2.Evaluation of the Effect of Targeted Monitoring of TypeⅠand TypeⅡIncision Oporation in a Hospital
Linmei JI ; Xuan GUAN ; Danru ZHANG ; Mingming LI
China Pharmacy 2015;(20):2759-2761
OBJECTIVE:to provide reference for the continuous improvement of surgical site infection (SSI). METHODS:There were totally 7 472 patients with typeⅠand typeⅡincision surgeries in a hospital after the targeted monitoring and special recti-fication(Jul. 2012 to Jun. 2013,monitoring group)and 5 958 patients with surgeries during the same period before special rectifi-cation(Jul. 2010 to Jun. 2011,control group). The clinic data of typeⅠand typeⅡincision surgical was compared,including infec-tion,the perioperative antibiotics use and hospitalization time after surgery,etc. RESULTS:The infection rate of typeⅠand typeⅡstandardized incision in monitoring group was respectively 0.35% and 0.43% and control group was respectively 0.60% and 1.36%(P<0.05). The rate of typeⅠincision perioperative antibiotics use in monitoring group was 10.72% and control group was 86.88%(P<0.05). The post-operative non-medication rate of patients was increased from the 6.98%(control group)to 49.20%(monitor-ing group)(P<0.05),the discontinuance rate within 48 h was increased from the 32.09%(control group)to 44.11%(monitoring group),and the ratio of patients who took antibiotics after the surgery for more than 3 d was decreased from the 42.82%(control group)to 3.05%(monitoring group)(P<0.05). The inguinal hernia repair time in monitoring group was 3.90 d,shorter than con-trol group(4.22 d)(P=0.018). The patient with gallbladder surgery in monitoring group was 6.47 d,compared with control group (6.38 d),there was no significant difference (P=0.619). CONCLUSIONS:The special rectification can obviously promote the standardized of perioperative antibiotics use,reduce the incidence of SSI and shorten the hospitalization time after operation.
3.About Long-term Hospitalization in Elderly Alzheimer's Patients Nursing Ethical Problem and Countermeasure Analysis
Shouya ZHANG ; Wenxian JIANG ; Linmei JIANG ; Zhijuan ZHENG
Chinese Medical Ethics 2015;(4):590-592
Alzheimer′s patients bring heavy burden to their family and society, causing potential safety prob-lems unable to escort for a long time with the family, physical constraints between protection and between self-es-teem and the mental health law,the quality of life and life values produce a series of contradiction and ethical is-sues,also make close contact with their nursing staff have to face the moral and ethical dilemma.The suggestions are:Hospital provides professional full-time, professional pension caregivers of alzheimer′s patients for long-term care, Strengthen the communication of nursing staff and patients′families, Reasonable and legitimate use tools, Perfect medical system construction, buildMedical support combinedcare system, Carry out the comprehensive rehabilitation nursing intervention, improve the patients quality of life, Change service concept, strengthening the study of ethical knowledge and application to promote the doctor-patient relationship.
4.Clinical analysis of twelve cases with cerebral venous sinus thrombosis in children
Xinhua WANG ; Haijuan HUANG ; Linmei ZHANG ; Shuizhen ZHOU
Chinese Journal of Neurology 2013;(6):383-386
Objective To summarize the etiological,clinical and imaging characteristics of cerebral venous sinus thrombosis (CVST) in children so as to provide the basis for early diagnosis and prompt treatment.Methods All the medical records including clinical manifestations,laboratory data,neuroimaging changes,treatment and short-term prognosis were analyzed retrospectively in 12 cases of CVST hospitalized in Children' s Hospital of Fudan University from Aug 2008 to May 2012.Results (1) Regarding the etiology:of the 12 cases,the causes of CVST were infection (2/12),intracranial tumor (1/12),nephrotic syndrome (2/12),cryptogenic disease (7/12).Seven out of all 12 cases without definite cause were presented subacute or chronic headache associated with progressive or acute exacerbation.Seven cases had been misdiagnosed.(2)Diagnosis:All 12 cases were made a definite diagnosis as CVST after neuroimaging examination of brain magnetic resonance imaging combined with magnetic angiography venography.(3) Short-term prognosis:all the patients were treated with anticoagulation,and 11 cases improved.Four of 7 cases with cryptogenic disease had different degrees of visual impairment,and no improvement were found after the treatment; One patient died although accepted digital subtraction angiography and balloon catheter technique.Conclusions Cerebral venous sinus thrombosis has no specific clinical manifestations and a high rate of misdiagnosis.Increased consideration and prompt magnetic angiography venography play a key role in the accurate diagnosis.Anticoagulation is safe and effective.
5.A troponin detection-combined study of rabbit experiment for evaluating cardiac fatigue.
Xiaobo YAN ; Linmei LUO ; Shouzhong XIAO ; Leichu LIU ; Suyuan DENG ; Cong ZHANG ; Guoxiang XIA
Journal of Biomedical Engineering 2014;31(4):855-860
The objective of this study is to combine troponin and indicators of cardiac acoustics for synthetically evaluating cardiac fatigue of rabbits, analyzing exercise-induced cardiac fatigue (EICF) and exercise-induced cardiac damage (EICD). New Zealand white rabbits were used to conduct a multi-step swimming experiments with load, reaching an exhaustive state for evaluating if the amplitude ratio of the first to second heart sound (S1/S2) and heart rate (HR) during the exhaustive exercise would decrease or not and if they would be recovered 24-48 h after exhaustive exercise. The experimental end point was to complete 3 times of exhaustions or death from exhaustion. Circulating troponin I (cTnI) were detected from all of the experimental rabbits at rest [(0. 02±0. 01) ng/mL], which, in general, indicated that there existed a physiological release of troponin. After the first exhaustive swim, cTnI of the rabbits increased. However, with 24-hour rest, S1/S2, HR, and cTnI of the tested rabbits all returned toward baseline levels, which meant that the experimental rabbits experienced a cardiac fatigue process. After repeated exhaustion, overloading phenomena were observed, which led to death in 3 out of 11 rabbits, indicating their cardiac damage; the troponin elevation under this condition could be interpreted by pathological release. Evaluation of myocardial damage can not be based on the troponin levels alone, but can only be based on a comprehensive analysis.
Animals
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Fatigue
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Heart
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physiopathology
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Heart Rate
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Myocardium
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pathology
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Rabbits
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Swimming
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Troponin I
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blood
6.The clinical and radiological features of children with first attack of inflammatory demyelinating central nervous system disorders and seropositivity to myelin-oligodendrocyte glycoprotein
Min ZHANG ; Wenhui LI ; Haowei YANG ; Linmei ZHANG
Chinese Journal of Neurology 2018;51(2):97-104
Objective To investigate the clinical and radiological features of children with first attack of inflammatory central nervous system disorders and seropositivity to myelin-oligodendrocyte glycoprotein (MOG).Methods The clinical course,cerebrospinal fluid (CSF),MRI studies,MOG status and outcomes were retrospectively analyzed in children with first attack of inflammatory central nervous system disorders and seropositivity to MOG who were hospitalized in Children's Hospital of Fudan University from January 2016 to April 2017.Results Thirteen patients including 8 males and 5 females were included in this study,the ratio of male/female was 1.6∶ 1,and the median age was six years.Ten patients were diagnosed with acute disseminating encephalomyelitis,and three with clinically isolated syndromes.Seven patients had elevated CSF lymphocyte cells,and five patients had elevated CSF protein.All the patients' sera were tested for the anti-MOG IgG,which ranged from 1∶10 to 1∶100 with cell-based assay.MRI results showed that multiple anatomical areas were involved.Twelve patients had brain lesions,in which 10 patients had multiple lobes involved and four had tumefactive demyelinating lesions.The affected anatomical areas included white matters in 11 cases,thalamus/basal ganglias in nine,corpus callosums in three,brainstems in 10,spinal cord in five.The MRI features were characterized by hazy,bilateral lesions without clear boundaries.Clinical symptoms were fully restored in all the patients after treated with intravenous globulin and methyl prednisone.The average follow-up time was 8.9 months,and none of the patients had clinical recurrence.Conclusions MOG was associated with many kinds of inflammatory demyelinating diseases of central nervous system in children.Most of them were diagnosed with acute disseminating encephalomyelitis which has an acute or sub acute clinical course.The clinical manifestations of patients showed diversity.Multiple anatomical areas were involved,and treatment with intravenous globulin and methyl prednisone was effective in the acute phase.All of the patients had a favorable outcome.
7. Analysis of gene mutation of early onset epileptic spasm with unknown reason
Xue YANG ; Gang PAN ; Wenhui LI ; Linmei ZHANG ; Bingbing WU ; Huijun WANG ; Ping ZHANG ; Shuizhen ZHOU
Chinese Journal of Pediatrics 2017;55(11):813-817
Objective:
To summarize the gene mutation of early onset epileptic spasm with unknown reason.
Method:
In this prospective study, data of patients with early onset epileptic spasm with unknown reason were collected from neurological department of Children's Hospital of Fudan University between March 2016 and December 2016. Patients with known disorders such as infection, metabolic, structural, immunological problems and known genetic mutations were excluded. Patients with genetic disease that can be diagnosed by clinical manifestations and phenotypic characteristics were also excluded. Genetic research methods included nervous system panel containing 1 427 epilepsy genes, whole exome sequencing (WES), analysis of copy number variation (CNV) and karyotype analysis of chromosome. The basic information, phenotypes, genetic results and the antiepileptic treatment of patients were analyzed.
Result:
Nine of the 17 cases with early onset epileptic spasm were boys and eight were girls. Patients' age at first seizure onset ranged from 1 day after birth to 8 months (median age of 3 months). The first hospital visit age ranged from 1 month to 2 years (median age of 4.5 months). The time of following-up ranged from 8 months to 3 years and 10 months. All the 17 patients had early onset epileptic spasm. Video electroencephalogram was used to monitor the spasm seizure. Five patients had Ohtahara syndrome, 10 had West syndrome, two had unclear classification. In 17 cases, 10 of them had detected pathogenic genes. Nine cases had point mutations, involving SCN2A, ARX, UNC80, KCNQ2, and GABRB3. Except one case of mutations in GABRB3 gene have been reported, all the other cases had new mutations. One patient had deletion mutation in CDKL5 gene. One CNV case had 6q 22.31 5.5MB repeats. Ten cases out of 17 were using 2-3 antiepileptic drugs (AEDs) and the drugs had no effect. Seven cases used adrenocorticotropic hormone (ACTH) and prednisone besides AEDs (a total course for 8 weeks). Among them, five cases had no effect and two cases were seizure free recently. A case with GABRB3 (C.905A>G) had seizure controlled for 3 mouths. A case with ARX (C.700G>A) had seizure controlled for 6 mouths.
Conclusion
The early onset epileptic spasm with unknown reason is highly related to genetic disorders. A variety of genetic mutations, especially new mutations were found. Genetic heterogeneity of epileptic spasm is obvious.
8. Novel compound heterozygous TBC1D24 mutations in a boy with infantile focal myoclonic epilepsy and literature review
Wenhui LI ; Shuizhen ZHOU ; Linmei ZHANG ; Xinhua WANG ; Yunjian ZHANG ; Bingbing WU ; Huijun WANG ; Haowei YANG
Chinese Journal of Pediatrics 2017;55(1):50-53
Objective:
To investigate the clinical features and genetic characteristics of patients with TBC1D24 gene mutations.
Method:
The clinical data of a patient with novel TBC1D24 compound heterozygous mutations from Children′s Hospital of Fudan University were collected, the related literature was searched from China National Knowledge Infrastructure, Wanfang Data Knowledge Service Platform, National Center from Biotechnology Information and Pubmed (up to April 2016) by using search terms "TBC1D24" "epilepsy" . The clinical features, electroencephalogram (EEG) and prognosis of the patients with TBC1D24 gene mutations were studied.
Result:
The patient was a boy with non-consanguineous healthy parents.He had an acute episode of focal continuous myoclonus lasting a few hours with consciousness preserved at the age of 3 months.Myoclonic jerks alternatively affected the eyelids, either the right or left limbs, sometimes triggered by fever or fatigue.The frequency was once 3-7 days.At the age of 6 months he was found to have myoclonus seizures with onset from a unilateral eyes lid and limb lasting 10 more minutes and subsequently affected four extremities or the trunk.They occurred once 3-4 months with perserved consciousness and lasted from several hours to up to ten more hours.They mostly disappeared during sleep.He had ataxia and mild mental retarding.Paroxysmal anomalies were not found on ictal traces.A novel compound heterozygous mutation of TBC1D24 gene, c. 730G>A, p.A244T and c. 1571G>C, p.R524P were found in the patient.Further study showed that c. 730G>A mutation was inherited from his father and c. 1571G>C from his mother. These two were not reported in public databases and predicted deleterious by Mutation Taster and polyphen-2.Literature relevant to TBC1D24 published all around the world was reviewed, no Chinese cases with TBC1D24 gene mutations had been reported. The total of 24 cases including the present case with TBC1D24 gene mutation were reported.Among them, 11 cases had compound heterozygous mutations and 13 cases had homozygous mutations.Ten mutations were identified, including 1 termination mutation, 1 frameshift mutation and 8 missense mutations.
Conclusion
TBC1D24 gene mutational analysis should be performed on patients with early-onset focal continuous myoclonus, if the etiology was unclear.
9.Persistent Malfunction of Glymphatic and Meningeal Lymphatic Drainage in a Mouse Model of Subarachnoid Hemorrhage
Tinglin PU ; Wenyan ZOU ; Weixi FENG ; Yanli ZHANG ; Linmei WANG ; Hongxing WANG ; Ming XIAO
Experimental Neurobiology 2019;28(1):104-118
Subarachnoid hemorrhage (SAH) is a devastating cerebrovascular event that often is followed by permanent brain impairments. It is necessary to explore the pathogenesis of secondary pathological damages in order to find effective interventions for improving the prognosis of SAH. Blockage of brain lymphatic drainage has been shown to worsen cerebral ischemia and edema after acute SAH. However, whether or not there is persistent dysfunction of cerebral lymphatic drainage following SAH remains unclear. In this study, autologous blood was injected into the cisterna magna of mice to establish SAH model. One week after surgery, SAH mice showed decreases in fluorescent tracer drainage to the deep cervical lymph nodes (dcLNs) and influx into the brain parenchyma after injection into the cisterna magna. Moreover, SAH impaired polarization of astrocyte aquaporin-4 (AQP4) that is a functional marker of glymphatic clearance and resulted in accumulations of Tau proteins as well as CD3⁺, CD4⁺, and CD8⁺ cells in the brain. In addition, pathological changes, including microvascular spasm, activation of glial cells, neuroinflammation, and neuronal apoptosis were observed in the hippocampus of SAH mice. Present results demonstrate persistent malfunction of glymphatic and meningeal lymphatic drainage and related neuropathological damages after SAH. Targeting improvement of brain lymphatic clearance potentially serves as a new strategy for the treatment of SAH.
Animals
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Apoptosis
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Aquaporin 4
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Astrocytes
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Brain
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Brain Ischemia
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Cisterna Magna
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Drainage
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Edema
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Hippocampus
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Lymph Nodes
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Mice
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Neuroglia
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Neurons
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Prognosis
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Spasm
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Subarachnoid Hemorrhage
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tau Proteins
10.Preliminary study of rabbit experiment modality for evaluating cardiac fatigue.
Xiaobo YAN ; Linmei LUO ; Leichu LIU ; Shouzhong XIAO ; Suyuan DENG ; Lingli XIANG ; Cong ZHANG
Journal of Biomedical Engineering 2013;30(2):287-291
This paper presents a preliminary study of rabbit experiment modality incorporating a new indicator for evaluating cardiac function changes, providing a basis for subsequent study of cardiac fatigue. Using only biochemical indicators, such as troponins, is difficult to make a distinction between exercise-induced cardiac fatigue (EICF) and exercise-induced cardiac damage (EICD). Therefore, some new indicators are needed to evaluate cardiac fatigue synthetically. In our study, we used New Zealand white rabbits to conduct a multi-step swimming experiments with load. We made the rabbits reach an exhaustive state to evaluate whether the amplitude ratio of the first to second heart sound (S1/S2) and heart rate (HR) during the exhaustive exercise would be decreased and whether they would be able to recover after the exhaustive exercise for 24 hours. During the first phase of swimming, S1/S2 and HR were increased, and then decreased at exhaustive state. They were recovered after the exhaustive exercise for 24 hours. Overloading led to deaths of three rabbis, and new phenomena from overloading and related to this kind of death were observed. The experiments proved that Multi-steps swimming experiments with loads by using New Zealand white rabbit is useful for studying cardiac fatigue and premonition of sudden cardiac death.
Animals
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Cardiovascular Physiological Phenomena
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Death, Sudden, Cardiac
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Female
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Heart
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physiology
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Heart Rate
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physiology
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Male
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Muscle Fatigue
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physiology
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Myocardial Contraction
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physiology
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Myocardium
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chemistry
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Physical Endurance
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physiology
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Rabbits
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Stress, Physiological
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physiology
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Swimming