1.The pathogenesis, diagnosis and treatment of sepsis in children
International Journal of Pediatrics 2014;41(2):138-141
Sepsis,a common clinical syndrome,comparing to septicaemia or bacteremia,has a more comprehensive pathophysiological process.Its pathogenesis is complex,including pro-inflammatory/anti-inflammatory cytokine imbalance,intestinal bacterial translocation,immunosuppression,signal pathway activation,etc.Further study on the pathogenesis of sepsis is the theory foundation to explore the new method of sepsis.The diagnosis of sepsis pathogenesis,treatment principles and common virus infection induced sepsis are reviewed in this paper.
2. Sal b attenuates cardiomyocyte injury by regulating priming of nlrp3 inflammasomes
Chinese Pharmacological Bulletin 2020;36(2):210-215
Aim To investigate whether Sal B alleviates hypoxic-induced cardiomyocyte injury by regulating the priming of NLRP3 inflammasomes. Methods The effects of Sal B on growth of H9C2 cells were examined by CCK8 assay,then the appropriate concen tration of Sal B was selected. The expression level of LDH was detected by Microliter assay. The expression levels of cTn/IL-lp were measured by Elisa assay. The protein and mRNA levels of TLR4/Myd88/I-RAK1/NF-kB/NLRP3 were detected by Western blot and qPCR. Results Hypoxia intervention notably reduced the viability of H9C2 cells and increased the expression levels of cTn/IL-IP. Besides,the protein and mRNA expression levels of TLR4/Myd88/IRAK1/NF-kB/NLRP3 were significant uP-regulated after hypoxia intervention. However, the viability of H9C2 cells increased, the secretion levels of LDH/cTn/IL-1 p were reduced,and the protein and mRNA levels of TLR4/Myd88/IRAK1/NF-KB/NLRP3 were significant inhibited after pretreated with Sal B. Conclusion Sal B attenuates cardiomyocyte injury by regulating the priming of NLRP3 inflammasome.I.
3.Clinical manifestations and pathogenesis of mycoplasma pneumoniae-associated extrapulmonary complications in children
Chinese Pediatric Emergency Medicine 2021;28(1):7-11
Mycoplasma pneumonia is the smallest free-living and self-replicating prokaryotic microbe being devoid of cell wall, which can not only lead to respiratory system diseases in human, but also play an important role in a wide variety of extrapulmonary diseases, involving cardiovascular, neurological, digestive, skin, hematological systems, and so on.However, the pathomechanisms of mycoplasma pneumonia-related extra-pulmonary diseases(MpEPDs) remain largely unknown.Yet there are three main possible pathomechanisms of mycoplasma pneumonia causing MpEPDs: direct type, immune type and vascular occlusion.They are connected with each other and cooperate on promoting MpEPDs, especially in children and the young.Comprehensive therapeutic strategies cover microbiology, immunology and anticoagulants, while supportive treatments are necessary.Most patients recover from MpEPDs have a favorable prognosis.
4.Glutamate transporter and neurodegenerative disorders
Yanling YANG ; Gang HU ;
Chinese Journal of Clinical Pharmacology and Therapeutics 2000;0(02):-
Glutamate is the primary excitatory amino acid in the mammal brain. Glutamate transporters perform the regulation of glutamate levels in synaptic cleft. If the glutamate transporters should not be expressed, stopped working, or gone into reverse releasing glutamate from the cytoplasm, there would be an extracellular build up of glutamate. Defective glutamate uptake has been suggested to be important in connection with amyotrophic lateral sclerosis, Alzheimer's disease and Parkinson's disease.
5.Immune function alteration in children after tonsillectomy and(or) adenoidectomy.
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2016;30(5):418-423
Tonsillectomy and(or) adenoidectomy are effective procedures for children with chronic tonsillitis, diseases associated with the tonsil and other adenotonsillar diseases, and obstructive sleep apnea-hypopnea syndrome. Since the tonsil and adenoid gland play a dual role in fluid and cell immunity, whether adenotonsillectomy results in the abnormal immune function in children after the surgery has always been the focus of attention. This review focuses on the alterations and impacts on immunity in children after tonsillectomy and/or adenoidectomy. Recent studies confirmed that in short term the immune index may be slightly reduced after the tonsil and adenoid resection in children, however, the decline has no clinical significance because the remaining mucosa-associated lymphoid tissue can compensate for removal of the tonsils and adenoids. Over time, the immune index tends to be normal. The children's postoperative short-term decline in the immune index will gradually recover to the preoperative level or there is no significant difference compared with that in normal children. Therefore, long-term immune function did not decline after tonsil and adenoid resection in children.
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Immunity, Cellular
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6.Intravenously Injected Bone Marrow Mesenchymal Stem Cells Can Promote Recovery of Bladder Function after Spinal Cord Injury (review)
Chinese Journal of Rehabilitation Theory and Practice 2008;14(11):1018-1023
The feasibility and mechanism study on intravenously injected bone marrow mesenchymal stem cells (MSCs) improving bladder function after spinal cord injury (SCI) were discussed by review the biological characteristics of MSCs, the changes and mechanism of the lower urinary tracts after SCI, and the study on the MSCs promoting recovery of bladder function.
7.In vitro and in vivo models of osteosarcoma for research of enhanced green fluorescent protein expression
China Oncology 2010;20(1):27-30
Background and purpose: Mouse osteosarcoma model was widely used in osteogenic malignant tumor research, and it was helpful for studying the invasion and metastasis of the tumor cells when it was well marked in vivo. The purpose of this study was to establish mouse sarcoma cell lines (S180) that were infected with enhanced green fluorescent protein(EGFP). Methods: EGFP-S180 expressing strong EGFP fluorescence was acquired by electroblot, and supplemented with G418 (800 mg/mL), c-Myc was detected by laser scanning confocal microscopy. Meanwhile, the cancer-bearing model was established subcutaneously within the abdominal cavity. Results: EGFP-S 180 cells were cloned. There was no significantly difference between c-Myc expressions in S180 cells and those in EGFP-S180 cells (P>0.05), and between the cancer-bearing time subcutaneously and the time within abdominal cavity (P>0.05). Conclusion: According to in vitro and in vivo assay, it showed that EGFP-expressing S180 cells could be used for studying further the tumor biological behavior with fluorescence technology.
8.Study on change of hypoxia stress peptide and nitrogen monoxidum in peripheral blood from the entering mountain rapidly man and its significance
International Journal of Laboratory Medicine 2009;30(10):937-939
Objective To analyze the concentration changes of serum hypoxia stress peptide (HSP)and plasma nitrogen monoxidum(NO)in the entering mountain rapidly man and to explore the importance of HSP and NO in adaptation of man to altitude hypoxia.Methods The levels of serum HSP and plasma NO2-/NO3-were measured from 106 entering mountain rapidly men,105 altitude in habitant,105 altitude immigrant and 104 plain healthy controls,respectively by chromatometry and NO2-/NO3-reagent.Furthermore,the content of serum HSP was determined in 106 entering mountain rapidly men,respectively at the time of 24 h,48 h,76 h,l week and 1 month after entering mountain.Results The level of serum HSP was significantly higher in entering mountain rapidly men than in habitant,immigrant and plain controls(P<0.05),while there was no statistical difference between in habitant,immigrant and plain controls(P>0.05).At 24h after entering mountain rapidly,the level of serum HSP was significantly increased and reached the peak.At 48h and 76h,it was slightly decreased,but still maintained a high level.At 1 week and 1 month,it gradually and significantly went down,but was still significantly higher than that in plain controls.Similarly,the level of plasma NO2-/NO3-was significantly elevated in entering mountain rapidly man,compared with inhabitant,immigrant and plain controls(P<0.05).It was lower in inhabitants and immigrants than plain controls,but the difference was not statistically significant(P>0.05).Conclusion The present results demonstrated that the levels of serum HSP and plasma NO were significantly up-regulated in healthy adults after en tcring mountain rapidly in order to adapt to altitude stress,and restored gradually to the normal level as time went by.
9.To Study the Protective Effect of Minocycline on the Model of the Cerebral Ischemia-reperfusion of Gerbils
Journal of Medical Research 2006;0(04):-
Objective To explore the protective effect mechanism of minocyline on the model of the cerebral ischemia-reperfusion of gerbils by decreasing expression of phosphorylation P38MAPK.Methods A cerebral ischemia-reperfusion model in gerbils was established by clamping both common carotids.The ultrastructural alteration in pyramidal neuron in the hippocampal CA1 and the cortex of frontal lobe at different time was observed by electron microscope.And observe the expression level of phosphorylation P38MAPK by using immunohistochemistry technique.Results ①The damage to the neunos became more and more severe as gerbils survived longer postocclusion.Minocyline treated groups were lessened obviously.② Treatment with minocycline reduced expression of phosphorylation P38MAPK with a significant difference(P
10.DISTRIBUTION OF THIAMIN, RIBOFLAVIN, NICOTINIC ACID, TOTAL NITROGEN AND XYLOSE IN KAOLIANG(Andropogon sorghum Brot. var.)KERNEL
Acta Nutrimenta Sinica 1956;0(01):-
The pericarp (1), aleurone layer (2), scutellum (3) (including the epiblast), embryo (4) (including radicle and plumule), and the outer (5) and inner (6) endosperm of two samples of kaoliang grain were separated by dissection. The ratio of the weight between the outer and the inner portions of endosperm is about 1:2.4. The contents of thiamin, riboflavin, nicotinic acid, total protein and xylose and the weight were determined separately for each part as well as for the whole grain.The results of analysis are given in Table 1 and the percentage distribution of the weight and the content of different nutrients of the whole grain in each part are shown in Table 2.More than 90% of thiamin is present in scutellum and embryo, although the sum of their weights represents only about 10% of the whole grain. The amount of this vitamin in the endosperm, the main portion of the polished grain, is only about 3%. Similar to the results obtained from other grains, the content of vitamin B_1 in the outer portion of the endosperm is higher than that in the inner part.The riboflavin content in the endosperm is about one fifth to one eighth of the other parts of the grain; owing to the high proportion of its weight, the percentage of riboflavin in the whole grain present in endosperm is about 30%. Thus the distribution of this vitamin is comparatively more even than that of thiamin and nicotinic acid.Nicotinic acid is largely concentrated in the aleurone layer. It is interesting to note that the content of this vitamin in the two samples of kaoliang is not the same, sample Ⅱ containing only about 70% of that in sample Ⅰ. This difference can be almost entirely attributed to the difference in the quantity present in the aleurone layer. The content of nicotinic acid in other parts of the grain is similar in both samples tested.The total nitrogen content in the embryo is much higher than that in other parts of the grain. The amount present in the inner part of the endosperm is considerably lower than that in the outer part.Xylose is largely concentrated in the pericarp and the aleurone layer, which together represent about 70% of the xylose content in the whole grain.