1.Establishment of methods for producing rat models of sepsis-associated encephalopathy
Lina ZHANG ; Yuhang AI ; Qulian GUO ; Bo YAO ; Zhiyong LIU ; Li HUANG ; Qianyi PENG
Chinese Journal of Emergency Medicine 2013;22(7):731-736
Objective To establish sepsis-associated encephalopathy (SAE) animal models by using neurobiology score,electroencephalography (EEG),somatosensory evoked potentials in order to provide evidence for early clinical diagnosis of SAE.Methods A total of 30 rats were weighted,numbered,and monitored with EEG electrodes 10 days before modeling.Ten days later,rats were weighted,numbered,and divided randomly (random number) into groups.Rat models of sepsis were made by cecal ligation and puncture (CLP).The changes of their neurological behaviors were observed and EEG was used to monitor at 4,6,8,12 and 24 hours after CLP.The changes of EEG waveform and somatosensory evoked potentials were analyzed and recorded.Rat models of sepsis were divided into sepsis + non-SAE group and SAE group based on the presence or absence of EEG or somatosensory evoked potentials changes ~thin 24 hours.Rats were sacrificed 24 hours later,and histopathological changes of brain tissue were observed under electronic microscopy.Thus,the feasibility of establishing early SAE animal model by monitoring the changes of neurological behaviors,EEG and somatosensory evoked potentials was evaluated.Results SAE could be early diagnosed by using neurobiology score,reduced α wave and markedly increased δ wave on EEG,reduced amplitudes of evoked potentials P1,and significantly prolonged latency of S-P1 and NI-P1.In survived septic rats,6 had changes on neurological behaviors,EEG and somatosensory evoked potentials,and thus were diagnosed as SAE.The incidence of SAE was 46%.Conclusions SAE can be diagnosed in early stage by using neurobiology score,EEG and somatosensory evoked potentials,confirming the SAE rat models to be successfully established.
2.The role of neuroglobin in oxygen-glucose deprivation and reoxygenation-induced mitochondrial ;depolarization and reactive oxygen species production in SH-SY5Y cells
Songyun DENG ; Yuhang AI ; Lina ZHANG ; Long WU ; Caixia CHEN ; Yimin WANG ; Zhiyong LIU ; Li HUANG ; Qianyi PENG
Chinese Journal of Internal Medicine 2017;56(1):44-48
Objective To investigate the role of neuroglobin ( NGB) in oxygen-glucose deprivation and reoxygenation ( OGD/R ) induced mitochondrial depolarization and reactive oxygen species ( ROS ) production in a human neuroblastoma cell line (SH-SY5Y).Methods SH-SY5Y cells were transfected with lentivirus to establish a stable cell line of NGB knockdown ( KD).After treated with OGD/R, cells were collected at different time points to analyze NGB mRNA and protein levels.Furthermore, cells were stained with JC-1 and DCFH-DA to evaluate mitochondrial depolarization and ROS production by inverted fluorescence microscope.Also, to determine the neurotoxicity , we measured the lactate dehydrogenase ( LDH) level in the cell culture medium.Results After the treatment of OGD/R, the NGB mRNA and protein started to elevate and peak at 4 h and 8 h (2.04 ±0.35 fold,1.69 ±0.18 fold).Compared with the vector group , NGB KD group had much more mitochondrial depolarization [ JC-1 red/green ( 1.10 ±0.10 ) vs (1.46 ±0.11),P<0.05] and ROS production [DCFH-DA fluorescence (36.30 ±5.32) vs (16.26 ± 2.97),P<0.05].Furthermore, NGB KD groups had a higher level of LDH release [(63.42 ±6.14)%vs (49.65 ±5.09 )%, P <0.05 ].Conclusions NGB plays an important role in the homeostasis of mitochondria.Knockdown of NGB results in increased mitochondrial depolarization , ROS production and neurotoxicity under hypoxia circumstances.
3. The clinical significance of transcranial Doppler in early diagnosis of sepsis-associated encephalopathy
Meilin AI ; Li HUANG ; Qing FENG ; Qianyi PENG ; Yunan MO ; Yuhang AI ; Lina ZHANG
Chinese Journal of Internal Medicine 2019;58(11):814-818
Objective:
To investigate the clinical significance of transcranial Doppler (TCD) in early diagnosis of sepsis-associated encephalopathy(SAE).
Methods:
Septic patients admitted to the intensive care unit(ICU) were recruited at Xiangya Hospital, Central South University from July 2015 to March 2016. Clinical data and TCD parameters during 24 hours after admission were collected. All patients were screened for delirium using the confusion assessment method for the intensive care unit (CAM-ICU) twice a day. The gold standard of the diagnosis of SAE was positive CAM-ICU evaluation. Patients were divided into SAE group and the non-SAE group. TCD data including systolic velocity (Vs), diastolic velocity (Vd), mean velocity (Vm), pulsatility index (PI) and resistant index (RI) were analyzed to determine the optimal diagnostic cut-off value.
Results:
A total of 43 patients were enrolled including 12 in SAE group and 31 in non-SAE group. Vm and Vd were lower in SAE group [Vm: (53.50±12.22) cm/s vs. (61.68±9.63) cm/s,
4.Causal association of cathepsins with female infertility: a bidirectional Mendelian randomization analysis
Lidan LIU ; Ming LIAO ; Bo LIU ; Qianyi HUANG ; Huimei WU ; Mujun LI
Obstetrics & Gynecology Science 2025;68(3):237-243
Objective:
This study aimed to systematically evaluate potential causal relationships between nine cathepsins and female infertility using Mendelian randomization (MR) methods.
Methods:
A bidirectional MR analysis was conducted utilizing single nucleotide polymorphisms as instrumental variables to investigate the potential causal effects between nine cathepsins and female infertility. Genetic data on female infertility were sourced from the FinnGen study, and cathepsin-related data were obtained from genome-wide association studies datasets of European ancestry.
Results:
Elevated levels of cathepsin E were significantly and inversely associated with the risk of female infertility, suggesting a potential protective role. This finding was further supported by multivariable MR analysis. However, no significant associations were observed between the other eight cathepsins and female infertility.
Conclusion
This study represents the first systematic MR analysis to identify a potential protective effect of cathepsin E on female infertility.
5.Causal association of cathepsins with female infertility: a bidirectional Mendelian randomization analysis
Lidan LIU ; Ming LIAO ; Bo LIU ; Qianyi HUANG ; Huimei WU ; Mujun LI
Obstetrics & Gynecology Science 2025;68(3):237-243
Objective:
This study aimed to systematically evaluate potential causal relationships between nine cathepsins and female infertility using Mendelian randomization (MR) methods.
Methods:
A bidirectional MR analysis was conducted utilizing single nucleotide polymorphisms as instrumental variables to investigate the potential causal effects between nine cathepsins and female infertility. Genetic data on female infertility were sourced from the FinnGen study, and cathepsin-related data were obtained from genome-wide association studies datasets of European ancestry.
Results:
Elevated levels of cathepsin E were significantly and inversely associated with the risk of female infertility, suggesting a potential protective role. This finding was further supported by multivariable MR analysis. However, no significant associations were observed between the other eight cathepsins and female infertility.
Conclusion
This study represents the first systematic MR analysis to identify a potential protective effect of cathepsin E on female infertility.
6.Causal association of cathepsins with female infertility: a bidirectional Mendelian randomization analysis
Lidan LIU ; Ming LIAO ; Bo LIU ; Qianyi HUANG ; Huimei WU ; Mujun LI
Obstetrics & Gynecology Science 2025;68(3):237-243
Objective:
This study aimed to systematically evaluate potential causal relationships between nine cathepsins and female infertility using Mendelian randomization (MR) methods.
Methods:
A bidirectional MR analysis was conducted utilizing single nucleotide polymorphisms as instrumental variables to investigate the potential causal effects between nine cathepsins and female infertility. Genetic data on female infertility were sourced from the FinnGen study, and cathepsin-related data were obtained from genome-wide association studies datasets of European ancestry.
Results:
Elevated levels of cathepsin E were significantly and inversely associated with the risk of female infertility, suggesting a potential protective role. This finding was further supported by multivariable MR analysis. However, no significant associations were observed between the other eight cathepsins and female infertility.
Conclusion
This study represents the first systematic MR analysis to identify a potential protective effect of cathepsin E on female infertility.
7.Causal association of cathepsins with female infertility: a bidirectional Mendelian randomization analysis
Lidan LIU ; Ming LIAO ; Bo LIU ; Qianyi HUANG ; Huimei WU ; Mujun LI
Obstetrics & Gynecology Science 2025;68(3):237-243
Objective:
This study aimed to systematically evaluate potential causal relationships between nine cathepsins and female infertility using Mendelian randomization (MR) methods.
Methods:
A bidirectional MR analysis was conducted utilizing single nucleotide polymorphisms as instrumental variables to investigate the potential causal effects between nine cathepsins and female infertility. Genetic data on female infertility were sourced from the FinnGen study, and cathepsin-related data were obtained from genome-wide association studies datasets of European ancestry.
Results:
Elevated levels of cathepsin E were significantly and inversely associated with the risk of female infertility, suggesting a potential protective role. This finding was further supported by multivariable MR analysis. However, no significant associations were observed between the other eight cathepsins and female infertility.
Conclusion
This study represents the first systematic MR analysis to identify a potential protective effect of cathepsin E on female infertility.
8.Causal association of cathepsins with female infertility: a bidirectional Mendelian randomization analysis
Lidan LIU ; Ming LIAO ; Bo LIU ; Qianyi HUANG ; Huimei WU ; Mujun LI
Obstetrics & Gynecology Science 2025;68(3):237-243
Objective:
This study aimed to systematically evaluate potential causal relationships between nine cathepsins and female infertility using Mendelian randomization (MR) methods.
Methods:
A bidirectional MR analysis was conducted utilizing single nucleotide polymorphisms as instrumental variables to investigate the potential causal effects between nine cathepsins and female infertility. Genetic data on female infertility were sourced from the FinnGen study, and cathepsin-related data were obtained from genome-wide association studies datasets of European ancestry.
Results:
Elevated levels of cathepsin E were significantly and inversely associated with the risk of female infertility, suggesting a potential protective role. This finding was further supported by multivariable MR analysis. However, no significant associations were observed between the other eight cathepsins and female infertility.
Conclusion
This study represents the first systematic MR analysis to identify a potential protective effect of cathepsin E on female infertility.
9. The correlations between traditional Chinese medicine syndromes of histiocytic necrotizing lymphadenitis and its pathological types
Ruhui JIN ; Zihui HUANG ; Qianyi XUE ; Jiguo DING ; Quanyong JIN ; Zhiqiao WANG
International Journal of Traditional Chinese Medicine 2020;42(2):110-114
Objective:
To investigate the interaction between traditional Chinese medicine (TCM) syndromes of histiocytic necrotizing lymphadenitis (HNL) and pathological types of HNL, so as to discover the distribution rule of TCM syndromes for indiction of intervention of HNL.
Methods:
A total of 166 patients with HNL were included. The baseline data of the patients, clinical feature, the four diagnosis information of TCM and histopathological of cervical lymph node were collected. The syndromes of TCM were judged. The pathological types were confirmed by cervical lymph node biopsy. The Multi-way ANOVA was used to analyze the correlation between traditional Chinese medicine syndromes of HNL and its pathological types.
Results:
Among the 166 patients, the ratio of different types are as follow: wind-heat and phlegm-toxin syndrome (57.83%, 96/166), heat-toxin exuberance syndrome (34.34%, 57/166), and phlegm and blood stasis syndrome (7.83%, 13/166). The pathological types include proliferative type (57.83%, 96/166), necrotizing type (35.54%, 59/166), and xanthomatous type (6.63%, 11/166). There were significant differences in targeted lymph node diameter, pain scores, body temperature (
10.Effect of salt restriction strategy based on salt taste on sodium intake of patients with chronic heart failure
Qianyi WANG ; Guozhen SUN ; Gaoqin WEN ; Qin WANG ; Min GAO ; Yuanyuan PENG ; Yanling HUANG ; Zejuan GU
Chinese Journal of Modern Nursing 2021;27(26):3522-3527
Objective:To explore the effect of salt restriction strategy based on salt taste on salt taste preference (STP) and sodium intake in patients with chronic heart failure.Methods:From April to September 2020, convenience sampling was used to select 166 patients with chronic heart failure in the Cardiology Department of a Class Ⅲ Grade A hospital in Nanjing City, Jiangsu Province as the research object. The patients were randomly divided into the experimental group (83 cases) and the control group (83 cases) . Both groups of patients were given standardized chronic heart failure treatment methods and health education. On this basis, the experimental group was given a low-salt nutrient meal of 5.0g, 6.0g, and 7.5 g per day according to the different STP of the patients.The 24-hour urine sodium, STP, and Dietary Sodium Restriction Questionnaire (DSRQ) were used to evaluate the intervention effect.Results:After the intervention, there was a statistically significant difference in STP between the two groups of patients ( P<0.05) . The 24-hour urine sodium of the experimental group after intervention was lower than that of the control group, and the difference was statistically significant ( P<0.01) . After the intervention, the DSRQ score of the experimental group was higher than that of the control group, and the difference was statistically significant ( P<0.01) . Conclusions:The salt restriction strategy based on salt taste can reduce the STP and urine sodium of patients with chronic heart failure, and improve the current status of the implementation of sodium restriction diet.