1.A study on polymorphism of salivary esterase in personal identification.
Ai Ying FAN ; Yu Xi ZAN ; Hong Jun LIU ; Ge GAO ; Jin Lian ZHANG
Journal of Forensic Medicine 2001;17(3):155-156
OBJECTIVE:
To research the value of polymorphism of salivary esterase(Set) in paternity and personal identification.
METHODS:
Phenotype and genotype of human salivary esterase were detected in 114 liquid saliva samples from the Chinese population by disc electrophoresis and fast blue RR staining assay.
RESULTS:
The frequency of Set type was F 22.81%, FS 50.88%, S2 6.31%. The estimated gene frequency of SetF was 0.4825 and SetS was 0.5175. The PE was 0.1875 and the DP was 0.6199.
CONCLUSION
Polymorphism of salivary esterase (Set) was practical in paternity and personal identification.
Esterases/genetics*
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Forensic Anthropology/methods*
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Gene Frequency
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Humans
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Paternity
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Polymorphism, Genetic
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Saliva/enzymology*
2.Effect of continuous renal replacement therapy on the function of CD8+T lymphocytes in patients with sepsis
Ling-Yu KONG ; Zan XI ; Wen-Ting MA ; Gen-Sheng LIU
Chinese Journal of Infection Control 2018;17(11):974-978
Objective To investigate the changes in CD8+T lymphocyte count and effect on immune function in patients with sepsis after continuous renal replacement therapy (CRRT).Methods General data of septic patients who admitted to the emergency department of a hospital between October 2015 and August 2016 were collected,pe-ripheral blood was taken from patients before and after single CRRT,the total CD8+T cell count,interferon-γ(IFN-γ)-secreting CD8+T cell count,the levels of inhibitory molecules and costimulatory molecules as well as IFN-γand tumor necrosis factor-α(TNF-α)produced by CD8+T cells were detected.Results A total of 37 hospitalized septic patients were infected with gram-negative bacteria, pathogens causing infection were Klebsiella pneumoniae (22 strains),Acinetobacter baumannii (1 1 strains),and Enterobacter cloacae (3 strains).After CRRT,the body temperature,heart rate,white blood cell count,urea nitrogen,and serum creatinine levels in septic patients were all lower than those before CRRT (all P<0.05).After CRRT,the total CD8+T cell count in septic patients didn’t change significantly (P>0.05),but IFN-γ-secreting CD8+T cell count increased (P<0.05).Levels of cytotoxic T lymphocyte-associated antigen 4(CTLA-4),programmed death-1 (PD-1),T-cell immunoglobulin and mucin-do-main-containing molecule 3 (TIM-3)after CRRT were all lower than those before CRRT (all P<0.05 ),while levels of costimulatory molecules CD28 and secreting IFN-γ elevated after CRRT(all P<0.05).Conclusion CRRT can not only improve the vital signs and renal function of patients with sepsis,but also enhance the immune function of CD8+T cells.
3.Effects of Notch signal on the expressions of HIF-α and autophagy- related genes Beclin1, LC3I, LC3II in oxygen-glucose deprivation induced myocardial cell injury.
Ling Yu KONG ; Zan XI ; Wen Ting MA ; Fei Yun YANG ; Li Dan NIU ; Jin He SHI
Chinese Journal of Applied Physiology 2019;35(2):165-168
OBJECTIVE:
To investigate the effects of Notch signal on hypoxic induction factor (HIF-1α) and autophagy-associated genes Beclin1, LC3I, LC3II in oxygen-glucose deprivation (OGD) induced myocardial cell injury.
METHODS:
The OGD model was established using hypoxic culture box and hypoglycemic DMEM medium. The cells were divided into normal control group, OGD group, OGD + NC siRNA group, OGD + Notch1 siRNA group and OGD + HIF-1α siRNA group. Western blot was used to detect the interference effects of HIF-1α siRNA and Notch1 siRNA. The effects of Notch1 siRNA and HIF-1α siRNA on the activity of myocardial cells in OGD model were detected by the CCK-8 assay. The effects of Notch1 siRNA and HIF-1α siRNA on autophage-associated genes Beclin1, LC3I and LC3II expression were detected by Western blot.
RESULTS:
The results of Western blot showed that HIF-1α siRNA could effectively knock down the expression of HIF-1α in myocardial cells in OGD model, and Notch1 siRNA could effectively knock down the expression of Notch1 and HIF-1α in myocardial cells in OGD model. The result of CCK-8 assay showed that Notch1 siRNA and HIF-1α siRNA reduced the activity of myocardial cells in OGD model, and there was no statistical difference between the two groups. Western blot results showed that Notch1 siRNA and HIF-1α siRNA could reduce the expressions of the autophagy-associated genes Beclin1, LC3I and LC3II, and reduce the ratio of LC3II to LC3I at mRNA level.
CONCLUSION
Notch1 plays a role in myocardial protection by regulating the expression of HIF-1α to regulate the autophagy in OGD model cells.
Autophagy
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Beclin-1
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metabolism
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Cell Hypoxia
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Cells, Cultured
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Glucose
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Humans
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Hypoxia-Inducible Factor 1, alpha Subunit
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metabolism
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Microtubule-Associated Proteins
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metabolism
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Myocytes, Cardiac
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cytology
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pathology
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Oxygen
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Receptors, Notch
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metabolism
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Signal Transduction