1.Multiple fundus imaging diagnosis: knowing the principles well for a rational application
Chinese Journal of Experimental Ophthalmology 2021;39(5):376-381
Multimodal fundus imaging techniques, based on lights and shadows, appear to have a rapidly great progress in recent years.Fundus imaging techniques are divided into anatomical approaches and functional approaches according to the working characteristics and principle of different instruments.Nowadays, fundus imaging techniques are developing toward a wide field, microview, multimodal, quantitative, and intelligent way.However, to our knowledge, the fundus is very broad with many unexplored territories and unsolved mysteries until now.The road of clinical industrialization of emerging imaging techniques is still long, and there is also a potential challenge in the application of artificial intelligence deep learning in ophthalmology.Multimodal fundus imaging techniques are beneficial for us to accurately diagnose and dynamically monitor eye diseases, but with so many examination methods, how to choose a highly sensitive and specific way to avoid the waste of medical resources and reduce unnecessary financial burden of patients is the responsibility of ophthalmologists.
2.Model of diabetic keratopathy with high-fat and high-glucose feeding mice
Wen, BO ; Guang-Hua, SUN ; Feng-Xia, SUN ; Wen, CUI
International Eye Science 2015;(4):596-600
AIM: To discuss the establishment of immediate diabetic keratopathy animal model of C57BL/6 mouse induced by ahigh-fat and high-glucose diet.
METHODS: Diabetes mellitus was induced by a high-fat and high-glucose diet in C57BL/6 mouse. 1% rose bengal was stained on the cornea to examine the integrality of the corneal epithelium at 2 ~ 12mo after completion of the model. Corneal epithelial wound healing was observed using a vivo epithelial debridement model which was dyed by sodium fluorescein. Corneal morphology histology was examined by pathological methods.
RESULTS: The high-fat and high-glucose diet C57BL/6 mouse in 2mo had showed general symptoms of diabetes: polydipsia, polyphagia, polyuria, weight loss etc. The model had a steady-state high glucose (≥18mmol/L), also the weight was lower compared with normal control mouse. 1% rose bengal corneal staining had dot coloring at 2mo after completion of the model, the stained area and extent were gradually increased with the extension of the duration of diabetes, almost all the cornea was stained at 12mo after completion of the
model. With the passage of time into a mold, the cornea epithelial healing time become longer: 2mo was about 40h;3mo was about 120h; 4, 6, 12mo was about 144h;the coloboma were gradually increased at 12mo after completion of the model, then the area was reduced gradually until complete healing, the time was 96~120h, showed repeating phenomenon.
CONCLUSION: The mouse were induced by high-fat and high-glucose diet can be used as animal models of diabetic keratopathy: the damage of epithelium for corneal and delay healing on epithelium and other symptoms.
3.Effect of Celecoxib on Proliferation and Apoptosis of U251 Glioma Cells
Chen FENG ; Hua FENG ; Hongli WEN ; Jinrui LIU
Chinese Journal of Rehabilitation Theory and Practice 2013;19(6):532-535
Objective To explore the effect of celecoxib on proliferation and apoptosis of the glioma cells. Methods The glioma cell U251 was used and disposed with different densities of celecoxib (0 μmol/L, 10 μmol/L, 20 μmol/L, 40 μmol/L and 80 μmol/L) for 24 h, 48h and 72 h. The methyl thiazolyl tetrazolium (MTT) assay was used to detect the tumor cell proliferation and flow cytometry was used to detect the tumor cell apoptosis rate. Results The Glioma U251 cells proliferation were significantly decreased with the increase of density of celecoxib in vitro, and there was significant difference in the inhibited rate in different density and different time (P<0.05). The apoptosis rate was higher in the density of 80 μmol/L (17.86%) than in that of 0 μmol/L (11.23%) (P<0.05). Conclusion Celecoxib can inhabit the proliferation of glioma U251 cells, and promote the apoptosis especially with the density of 80 μmol/L.
4.A case of Guillain-Barre syndrome complicated with posterior reversible encephalopathy syndrome.
Ying YANG ; Jian-hua FENG ; Yu-wen DAI
Chinese Journal of Pediatrics 2013;51(6):477-478
Biomarkers
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blood
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Brain
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diagnostic imaging
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pathology
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Brain Edema
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etiology
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pathology
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Child
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Diagnosis, Differential
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Electroencephalography
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Guillain-Barre Syndrome
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complications
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diagnosis
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therapy
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Humans
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Magnetic Resonance Imaging
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Male
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Posterior Leukoencephalopathy Syndrome
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complications
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diagnosis
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therapy
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Radiography
6. Progress in research on cyclophilin A and malignant tumors
Tumor 2013;33(10):928-934
CypA (cyclophilin A), the main intracellular receptor of immunosuppressant CsA (cyclosporin A), is the first discovered and most abundant one in cyclophilin family and has been studied in-depth. CypA has PPIase (peptidyl-prolyl cis-trans isomerase) activity and molecular chaperone functions which enable it playing a role in correct protein folding. CypA also involves in a variety of biological functions such as immune suppression, inflammatory response, and oxidative stress response. Recent studies have found that CypA was overexpressed in many malignant tumors, and it can promote the proliferation of tumor cells, inhibit apoptosis, and mediate tumor invasion and metastasis. It may become a new diagnostic and therapeutic target of some malignant tumors in future. Copyright © 2013 by TUMOR.
7.Changes of Serum Levels of N-Terminal Pro-Brain Natriuretic Peptide in Children with Congestive Heart Failure Complicated with Different Pathogeny and Its Relationship with Pulmonary Hypertension
hai-ying, ZHOU ; hua-feng, YU ; xiao-wen, ZHOU
Journal of Applied Clinical Pediatrics 1992;0(06):-
0.05).Conclusions Serum NT-proBNP level is sensitive and specific for the diagnosis of pneumonia complicated with CHF and CHD complicated with CHF. There is an increasing tendency of NT-proBNP level companied increasing pulmonary pressure.
8.Analysis of Interleukin-1 Recepetor Antagonist Gene Polymorphisms of Children with Febrile Seizwres
shu-hua, LI ; chao-feng, HU ; wen-cheng, MA
Journal of Applied Clinical Pediatrics 2004;0(07):-
Objective To evaluate the relationship between children interleukin-1 receptor antagonist gene(IL-1RN) polymorphisms and susceptibility to febrile seizures(FS).Methods Matching case-control study was carried out,blood samples from 52 patients with FS and 53 healthy children were collected.Genomic DNA was extracted and examined by polymerase chain reaction(PCR) amplification for judging IL-1RN genetype.Results Only Ⅰ/Ⅰ,Ⅰ/Ⅱ,Ⅱ/Ⅳ genetypes of IL-1RN were found in the surveyed Chinese population of Han nationality in Guangdong Province.No significant differences of these genotypes were observed in patients and controls.But the allele frequencise of Ⅰ,Ⅱand Ⅳ in patients were 95.2%,3.8% and 1.0%,respectively,while these frequencise in controls were 84.9%,10.4% and 4.7%,respectively.The allele frequency of IL-1RNⅠin patients was obviously higher than that in controls(P
9.Effect of Xingnaojing injection on intestinal mucosal barrier in septicemia and intracerebral hemorrhage mice
Wen-Qian WANG ; Shuang WU ; Feng-Hua FU
Chinese Journal of Pharmacology and Toxicology 2018;32(4):307-307
OBJECTIVE Xingnaojing injection(XNJ)is an extracts of Angong Niuhuang Pill that is a well-known traditional Chinese medicine used for the treatment of septicemia and stroke.This study aims to investigate the effect of XNJ on intestinal mucosal barrier in septicemia and intracerebral hem-orrhage(ICH)mice models.METHODS The septicemia mice models were induced by intravenous in-jection with lipopolysaccharide(20 mg·kg-1).And the ICH mice models were made by intrastriatal injec-tion of bacterial collagenase. The septicemia animals were treated intravenously with XNJ at dose of 2.5,5,10,or 15 mL·kg-1.The ICH animals were treated intravenously with XNJ at dose of 10 mL·kg-1. Thereafter, the permeability of intestinal mucosa was assayed by FITC-D method. RESULTS Com-pared with the control group(44.72±4.30),the permeability of intestinal mucosa in the mice in septice-mia group (233.68±28.18) was significantly increased (P<0.01). Treatment with XNJ at dose of 5, 10, and 15 mL·kg-1reduced the permeability of intestinal mucosa (150.45 ± 17.52,139.21 ± 17.05,132.55 ± 18.88,respectively, P<0.01)except 2.5mL·kg-1(240.71±21.42,P>0.01);Compared with sham group (57.88±7.31),the permeability of intestinal mucosa in the mice of ICH(282.25±23.78)was significantly in-creased(P<0.01). Treatment with XNJ (10 mL·kg-1)in the mice of ICH group ameliorated the change of permeability in intestinal mucosa (148.83±15.86, P<0.01). CONCLUSION XNJ exhibits the protec-tive effect on the intestinal mucosal barrier in septicemia and ICH, which will prevent the endotoxin to penetrate the intestinal mucosa and then to enter the circulation in infections and stress.
10.Effects of mycorrhizal colonization and medicine quality of Paris polyphylla var. yunnanensis inoculated by different foreign AM fungi species.
Zhou NONG ; Bo DING ; Yuan FENG ; Wen-hua QI ; Hua ZHANG ; Dong-qin GUO ; Jun XIANG
China Journal of Chinese Materia Medica 2015;40(16):3158-3167
After 28 foreign species of AM fungi were inoculated in sterilized soil, the effects of the AM mycorrhizal colonization and the medicine quality of Paris polyphylla var. yunnanensis were observed by combination of inoculation test in pot at room temperature and instrumental analysis. The results showed that, compared with control group (CK), the inoculation of foreign AM fungi in the soil influenced the spore density, mycorrhizal infection rate, and colonization intensity of AM fungi in root system of P. polyphylla var. yunnanensis. The inoculation of foreign AM fungi enhanced the mycorrhiza viability of P. polyphylla var. yunnanensis by increasing the activity of succinic dehydrogenase (SDH) and alkaline phosphatase (ALP) in intraradical hyphae. The content of single steroid saponin in rhizome of P. polyphylla var. yunnanensis showed variation after P. polyphylla var. yunnanensis was inoculated by different foreign species of AM fungi, which was beneficial for increasing the medicine quality; however, the kinds of steroid saponin showed no difference. In a degree, there was a selectivity of symbiosis between P. polyphylla var. yunnanensis and foreign AM fungi. And we found that the Claroideoglomus claroideum and Racocetra coralloidea were best foreign AM fungi species for cultivating P. polyphylla var. yunnanensis under field condition.
Chromatography, High Pressure Liquid
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Drugs, Chinese Herbal
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analysis
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Fungi
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classification
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growth & development
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Liliaceae
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chemistry
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growth & development
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microbiology
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Mycorrhizae
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classification
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growth & development
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Plant Roots
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chemistry
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growth & development
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microbiology
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Quality Control