1.Terms Related to The Study of Biomacromolecular Condensates
Ke RUAN ; Xiao-Feng FANG ; Dan LI ; Pi-Long LI ; Yi LIN ; Zheng WANG ; Yun-Yu SHI ; Ming-Jie ZHANG ; Hong ZHANG ; Cong LIU
Progress in Biochemistry and Biophysics 2025;52(4):1027-1035
Biomolecular condensates are formed through phase separation of biomacromolecules such as proteins and RNAs. These condensates exhibit liquid-like properties that can futher transition into more stable material states. They form complex internal structures via multivalent weak interactions, enabling precise spatiotemporal regulations. However, the use of inconsistent and non-standardized terminology has become increasingly problematic, hindering academic exchange and the dissemination of scientific knowledge. Therefore, it is necessary to discuss the terminology related to biomolecular condensates in order to clarify concepts, promote interdisciplinary cooperation, enhance research efficiency, and support the healthy development of this field.
2.Effect of Linggui Zhugantang on Ventricular Remodeling After Myocardial Infarction and RhoA/ROCK Signaling Pathway
Han REN ; Wanzhu ZHAO ; Shushu WANG ; Rui CAI ; Yuanhong ZHANG ; Shengyi HUANG ; Jinling HUANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):1-9
ObjectiveThis study aims to investigate the effects of Linggui Zhugantang (LGZGT) on ventricular remodeling (VR) in mice with myocardial infarction (MI) and its impact on the Ras homologgene A (RhoA)/Rho-associated coiled-coil forming protein kinase (ROCK) signaling pathway. MethodsThe MI model of mice was established by ligating the left anterior descending coronary artery (LAD). They were divided into the sham-operated group, the model group, the low-dose, medium-dose, and high-dose groups of LGZGT (2.34, 4.68, 9.36 g·kg-1), and the captopril group (3.25 mg·kg-1), with 10 mice in each group. After four weeks of continuous drug administration by gavage, the level of cardiac function in each group of mice was examined using small animal Doppler ultrasound. Hematoxylin-eosin (HE) staining and Masson staining was used to assess the morphological changes of myocardial tissue and calculate the rate of collagen fiber deposition in mouse myocardial tissue. Wheat germ agglutinin (WGA) staining was employed to compare the cross-sectional area of cardiomyocytes in each group of mice. The expression levels of α-smooth muscle actin (α-SMA), matrix metalloproteinase-2 (MMP-2), type Ⅰcollagen (Col Ⅰ), Col Ⅲ, tissue inhibitor of metalloproteinase 1(TIMP1), B-cell lymphoma-2 (Bcl-2)-associated X protein (Bax), Bcl-2, Caspase-3, and cleaved Caspase-3 were detected by Western blot. Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) was used to evaluate the mRNA levels of the pathway-related genes RhoA, ROCK1, and ROCK2. The protein expression levels of RhoA, ROCK1, and ROCK2 were tested by Western blot. ResultsThe level of cardiac function was markedly declined in the model group compared to the sham-operated group(P<0.01). Myocardial tissue morphology changed significantly. The cross-sectional area of cardiomyocytes was significantly enlarged. The expression of α-SMA, MMP-2, Col Ⅰ, and Col Ⅲ was significantly upregulated(P<0.01), and TIMP1 protein expression was significantly reduced(P<0.01). The expressions of apoptosis-related proteins Bax were significantly up-regulated(P<0.01), while the expression of Bcl-2 protein was significantly decreased(P<0.01). The mRNA expression of RhoA, ROCK1, and ROCK2 were significantly upregulated (P<0.01). Compared to the model group, the low-dose, medium-dose, and high-dose groups of LGZGT and the captopril group significantly reversed the experimental results of the model group in a dose-dependent manner (P<0.05, P<0.01). ConclusionLGZGT significantly attenuated myocardial fibrosis, myocardial hypertrophy, and cardiomyocyte apoptosis after MI in mice and effectively reversed VR, the mechanism of which may be related to the modulation of the RhoA/ROCK signaling pathway.
3.Effect of Linggui Zhugantang on Ventricular Remodeling After Myocardial Infarction and RhoA/ROCK Signaling Pathway
Han REN ; Wanzhu ZHAO ; Shushu WANG ; Rui CAI ; Yuanhong ZHANG ; Shengyi HUANG ; Jinling HUANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):1-9
ObjectiveThis study aims to investigate the effects of Linggui Zhugantang (LGZGT) on ventricular remodeling (VR) in mice with myocardial infarction (MI) and its impact on the Ras homologgene A (RhoA)/Rho-associated coiled-coil forming protein kinase (ROCK) signaling pathway. MethodsThe MI model of mice was established by ligating the left anterior descending coronary artery (LAD). They were divided into the sham-operated group, the model group, the low-dose, medium-dose, and high-dose groups of LGZGT (2.34, 4.68, 9.36 g·kg-1), and the captopril group (3.25 mg·kg-1), with 10 mice in each group. After four weeks of continuous drug administration by gavage, the level of cardiac function in each group of mice was examined using small animal Doppler ultrasound. Hematoxylin-eosin (HE) staining and Masson staining was used to assess the morphological changes of myocardial tissue and calculate the rate of collagen fiber deposition in mouse myocardial tissue. Wheat germ agglutinin (WGA) staining was employed to compare the cross-sectional area of cardiomyocytes in each group of mice. The expression levels of α-smooth muscle actin (α-SMA), matrix metalloproteinase-2 (MMP-2), type Ⅰcollagen (Col Ⅰ), Col Ⅲ, tissue inhibitor of metalloproteinase 1(TIMP1), B-cell lymphoma-2 (Bcl-2)-associated X protein (Bax), Bcl-2, Caspase-3, and cleaved Caspase-3 were detected by Western blot. Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) was used to evaluate the mRNA levels of the pathway-related genes RhoA, ROCK1, and ROCK2. The protein expression levels of RhoA, ROCK1, and ROCK2 were tested by Western blot. ResultsThe level of cardiac function was markedly declined in the model group compared to the sham-operated group(P<0.01). Myocardial tissue morphology changed significantly. The cross-sectional area of cardiomyocytes was significantly enlarged. The expression of α-SMA, MMP-2, Col Ⅰ, and Col Ⅲ was significantly upregulated(P<0.01), and TIMP1 protein expression was significantly reduced(P<0.01). The expressions of apoptosis-related proteins Bax were significantly up-regulated(P<0.01), while the expression of Bcl-2 protein was significantly decreased(P<0.01). The mRNA expression of RhoA, ROCK1, and ROCK2 were significantly upregulated (P<0.01). Compared to the model group, the low-dose, medium-dose, and high-dose groups of LGZGT and the captopril group significantly reversed the experimental results of the model group in a dose-dependent manner (P<0.05, P<0.01). ConclusionLGZGT significantly attenuated myocardial fibrosis, myocardial hypertrophy, and cardiomyocyte apoptosis after MI in mice and effectively reversed VR, the mechanism of which may be related to the modulation of the RhoA/ROCK signaling pathway.
4.Changes of corneal densitometry and higher-order aberrations in high myopia patients after small incision lenticule extraction
Yangjing ZHANG ; Liwei MA ; Guohua CAI ; Su LIU ; Ruifu WANG ; Lipye ZU
International Eye Science 2025;25(6):894-899
AIM: To observe the changes of corneal densitometry(CD)and higher-order aberrations after small incision lenticule extraction(SMILE), and to explore their correlations and influencing factors.METHODS: Prospective study. A total of 62 high-degree myopia and compound myopic astigmatism patients(62 eyes)who underwent SMILE in Urumqi Aier Eye Hospital from December 2022 to November 2023 were collected. The CD, root mean square of corneal higher-order aberrations(RMS HOA), spherical aberration, vertical coma, horizontal coma, and corneal epithelial thickness(CET)of the patients were measured before surgery, and at 1 d, 1 wk, 1, 3, and 6 mo after surgery, respectively.RESULTS:There were 4 patients lost to follow-up during the period, all due to failure to attend scheduled reexaminations. The number of complete and valid cases was 58 eyes. The CD in the central and paracentral regions of the anterior, middle, and total layer of the cornea increased significantly on the first day after surgery(all P<0.003). At 6 mo after surgery, there was a slight but statistically significant decrease in the CD of the central and paracentral regions of the anterior and the total anterior layer(all P<0.003). Compared with the preoperative baseline values, the RMS HOA, spherical aberration, and vertical coma significantly increased at 6 mo after surgery(all P<0.003), while the change in horizontal coma was not statistically significant. Compared with the preoperative baseline values, the CET in the central, paracentral, and peripheral regions of the cornea, as well as the total average CET in the 0-7 mm range of the cornea increased at 6 mo after surgery(all P<0.003). At 1 d after surgery, CD of the anterior layer and total layer in the central region of the cornea were positively correlated with the CET in the central region(rs=0.327, rs=0.250, all P<0.05). At 6 mo after the surgery, the CD of the middle layer and posterior layer in the central corneal region were negatively correlated with the preoperative spherical equivalent and the change of RMS HOA(all P<0.05).CONCLUSION:The anterior CD decreases at 6 mo after SMILE for high myopia correction, and there is a certain correlation between the changes in CD and some clinical parameters.
5.Components and Brain-protective Effect of Chuanxiong Rhizoma-Paeoniae Radix Rubra in Improving Ischemic Stroke Based on UPLC-Q-TOF-MS
Qizhong JIN ; Jie ZHANG ; Lijuan XIU ; Fan XU ; Lei WANG ; Ning WANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(12):20-29
ObjectiveTo investigate the chemical constituents of Chuanxiong Rhizoma-Paeoniae Radix Rubra(CRPRR) that cross the blood-brain barrier in rats with ischemic stroke, their brain-protective effects, and their impact on inflammatory factors including tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-18 (IL-18) based on ultra-high performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) and pharmacodynamic experiments. MethodsA focal cerebral ischemia-reperfusion injury model was established in rats via the middle cerebral artery occlusion/reperfusion (MCAO/R) method using intraluminal suture. Neurological function was evaluated using behavioral scoring. UPLC-Q-TOF-MS was employed to identify the chemical constituents of CRPRR that crossed the blood-brain barrier and entered the cerebrospinal fluid in MCAO/R model rats. Male Sprague-Dawley rats were randomly divided into six groups: sham operation group, model group, low-, medium-, and high-dose CRPRR groups (1.35, 2.7, 5.4 g·kg-1, respectively), and an edaravone group (5 mg·kg-1), with 12 rats in each group. The sham and model groups received normal saline, while the treatment groups received the respective doses of CRPRR once daily by gavage for three consecutive weeks. The brain-protective effects of CRPRR were assessed using the Longa five-point scoring method, open field test, Morris water maze, 2,3,5-triphenyltetrazolium chloride (TTC) staining, hematoxylin and eosin (HE) staining, and transmission electron microscopy. ResultsNine chemical constituents were identified in the cerebrospinal fluid containing CRPRR, namely paeoniflorin, senkyunolide F, senkyunolide G, paeonimetabolin Ⅰ, paeoniflorin derivative, senkyunolide H, benzoylpaeoniflorin, senkyunolide A, and ligustilide. Animal experiment results showed that compared with the sham operation group, the model group exhibited disordered neuronal arrangement, severe vacuolation, nuclear pyknosis, and evident mitochondrial swelling. Chromatin aggregation and peripheralization were also observed. Neurological scores and the number of crossings in the central region were significantly increased (P<0.01), while platform crossings were significantly decreased (P<0.01), and clear infarct areas were present (P<0.01). Serum levels and protein expression of TNF-α, IL-1β, and IL-18 were significantly elevated (P<0.01). Compared with the model group, all dose groups of CRPRR showed marked improvement in neuronal morphology which was close to the normal level, with mitochondrial swelling alleviated and chromatin distribution more uniform. The medium- and high-dose groups significantly reduced neurological scores (P<0.01), while the low-, medium-, and high-dose groups significantly reduced the number of central crossings (P<0.01) and infarct volume (P<0.01), and decreased TNF-α, IL-1β, and IL-18 levels (P<0.05, P<0.01) compared with the model group. Furthermore, the medium- and high-dose groups significantly reduced TNF-α protein expression (P<0.05,P<0.01), and the high-dose group significantly reduced IL-1β and IL-18 protein expression (P<0.01). ConclusionThis study confirmed that CRPRR improves neurological function and alleviates brain tissue damage in MCAO/R rats. Its mechanism may be associated with the downregulation of inflammatory factors TNF-α, IL-1β, and IL-18, as well as the presence of nine active chemical constituents in cerebrospinal fluid, namely paeoniflorin, senkyunolide F, senkyunolide G, paeonimetabolin Ⅰ, paeoniflorin derivative, senkyunolide H, benzoylpaeoniflorin, senkyunolide A, and ligustilide, which are closely related to their brain-protective effects.
6.Components and Brain-protective Effect of Chuanxiong Rhizoma-Paeoniae Radix Rubra in Improving Ischemic Stroke Based on UPLC-Q-TOF-MS
Qizhong JIN ; Jie ZHANG ; Lijuan XIU ; Fan XU ; Lei WANG ; Ning WANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(12):20-29
ObjectiveTo investigate the chemical constituents of Chuanxiong Rhizoma-Paeoniae Radix Rubra(CRPRR) that cross the blood-brain barrier in rats with ischemic stroke, their brain-protective effects, and their impact on inflammatory factors including tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-18 (IL-18) based on ultra-high performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) and pharmacodynamic experiments. MethodsA focal cerebral ischemia-reperfusion injury model was established in rats via the middle cerebral artery occlusion/reperfusion (MCAO/R) method using intraluminal suture. Neurological function was evaluated using behavioral scoring. UPLC-Q-TOF-MS was employed to identify the chemical constituents of CRPRR that crossed the blood-brain barrier and entered the cerebrospinal fluid in MCAO/R model rats. Male Sprague-Dawley rats were randomly divided into six groups: sham operation group, model group, low-, medium-, and high-dose CRPRR groups (1.35, 2.7, 5.4 g·kg-1, respectively), and an edaravone group (5 mg·kg-1), with 12 rats in each group. The sham and model groups received normal saline, while the treatment groups received the respective doses of CRPRR once daily by gavage for three consecutive weeks. The brain-protective effects of CRPRR were assessed using the Longa five-point scoring method, open field test, Morris water maze, 2,3,5-triphenyltetrazolium chloride (TTC) staining, hematoxylin and eosin (HE) staining, and transmission electron microscopy. ResultsNine chemical constituents were identified in the cerebrospinal fluid containing CRPRR, namely paeoniflorin, senkyunolide F, senkyunolide G, paeonimetabolin Ⅰ, paeoniflorin derivative, senkyunolide H, benzoylpaeoniflorin, senkyunolide A, and ligustilide. Animal experiment results showed that compared with the sham operation group, the model group exhibited disordered neuronal arrangement, severe vacuolation, nuclear pyknosis, and evident mitochondrial swelling. Chromatin aggregation and peripheralization were also observed. Neurological scores and the number of crossings in the central region were significantly increased (P<0.01), while platform crossings were significantly decreased (P<0.01), and clear infarct areas were present (P<0.01). Serum levels and protein expression of TNF-α, IL-1β, and IL-18 were significantly elevated (P<0.01). Compared with the model group, all dose groups of CRPRR showed marked improvement in neuronal morphology which was close to the normal level, with mitochondrial swelling alleviated and chromatin distribution more uniform. The medium- and high-dose groups significantly reduced neurological scores (P<0.01), while the low-, medium-, and high-dose groups significantly reduced the number of central crossings (P<0.01) and infarct volume (P<0.01), and decreased TNF-α, IL-1β, and IL-18 levels (P<0.05, P<0.01) compared with the model group. Furthermore, the medium- and high-dose groups significantly reduced TNF-α protein expression (P<0.05,P<0.01), and the high-dose group significantly reduced IL-1β and IL-18 protein expression (P<0.01). ConclusionThis study confirmed that CRPRR improves neurological function and alleviates brain tissue damage in MCAO/R rats. Its mechanism may be associated with the downregulation of inflammatory factors TNF-α, IL-1β, and IL-18, as well as the presence of nine active chemical constituents in cerebrospinal fluid, namely paeoniflorin, senkyunolide F, senkyunolide G, paeonimetabolin Ⅰ, paeoniflorin derivative, senkyunolide H, benzoylpaeoniflorin, senkyunolide A, and ligustilide, which are closely related to their brain-protective effects.
7.Impact of Onset-to-Door Time on Endovascular Therapy for Basilar Artery Occlusion
Tianlong LIU ; Chunrong TAO ; Zhongjun CHEN ; Lihua XU ; Yuyou ZHU ; Rui LI ; Jun SUN ; Li WANG ; Chao ZHANG ; Jianlong SONG ; Xiaozhong JING ; Adnan I. QURESHI ; Mohamad ABDALKADER ; Thanh N. NGUYEN ; Raul G. NOGUEIRA ; Jeffrey L. SAVER ; Wei HU
Journal of Stroke 2025;27(1):140-143
9.WANG Jianmin's Experience in Treating Cathartic Colon from the Perspective of "Keeping Sweet to Return Liquid"
Siyuan ZHANG ; Ming LI ; Kun TANG ; Ran TANG ; Yueyue ZHANG ; Yue ZHAO ;
Journal of Traditional Chinese Medicine 2025;66(11):1104-1108
To summarize Professor WANG Jianmin's experience in cathartic colon from "keeping sweet to return liquid". It is believed that the key to the pathogenesis of cathartic colon is fluid consumption and intestinal dryness, including yin depletion of spleen earth, and lack of sources for body fluids production; discordance of water and fire in kidneys, and irregular distribution of body fluids; and closure of the lungs and liver leads to inability of the flow of fluids. The treatment is based on the principle of "keeping sweet to return liquid", using sweet medicinals mainly, assistant with sour, bland and acrid medicinals, and self-prescribed Lipi Shengjin Decoction (理脾生津汤), Wenshen Runchang Decoction (温肾润肠汤), Kaifei Shunchang Decoction (开肺顺肠汤), Rougan Tongbian Decoction (柔肝通便汤) could be used to regulate spleen yin by the sweet and bland, and establish qi and promote fluid production; the sweet and warm medicinals can replenish water and fire, transform into qi, and distribute body fluids; the acrid and sweet can open lung depression, descend qi, and flow the body fluids; the sour and sweet can emolliate liver, move qi, and transform fluids.
10.Application of fractal dimension CONVLSTM model in predicting the number of influenza cases in Hefei City
Sheng ZHANG ; Junjun MAO ; Weiling CHENG
Journal of Public Health and Preventive Medicine 2025;36(1):8-12
Objective To develop a multivariate modeling and prediction approach using the data of influenza incidence, meteorological factors and PM2.5 variables in Hefei City, and to provide new insights into multivariate modeling and prediction methods. Methods PM2.5 data were transformed into fractal dimension data and, along with meteorological data, were incorporated into a ConvLSTM model. The performance of this model was compared with traditional ARIMAX and multivariate LSTM models. Results The ARIMAX model's testing set Mean Absolute Error (MAE) was 95.75, Root Mean Square Error (RMSE) was 176.72, and Index of Agreement (IA) was 0.396642. The multivariate LSTM model's testing set MAE was 22.18, RMSE was 43.06, and IA was 0.974611. For the fractal dimension-based ConvLSTM model, the testing set MAE was 17.37, RMSE was 32.25, and IA was 0.988149. Conclusion The fractal dimension effectively captures the complexity and self-similarity of PM2.5 concentration, providing the model with richer feature information. The fractal dimension-based ConvLSTM model significantly outperforms the traditional ARIMAX model and the multivariate LSTM model in prediction accuracy and can be used for predicting the number of influenza cases.


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