1.Impact of initial screening strategies on compliance with colonoscopy for colorectal carcinoma in residents aged 50 years and above
Fang XIANG ; Zhihao HU ; Yawei WANG ; Yiying ZHANG ; Fang HUANG ; Qian PENG ; Hongjie YU ; Chaowei FU
Shanghai Journal of Preventive Medicine 2025;37(2):140-144
ObjectiveTo compare colonoscopy compliance rates under different screening strategies, to explore ways to enhance colonoscopy compliance among residents with colorectal carcinoma. MethodsResidents aged between 50‒80 years were recruited through extensive community outreach and voluntary participation. A total of 210 630 residents who participated in the colorectal carcinoma screening program in Jiading District, Shanghai, between 2013 and 2019 were selected as the research subjects. All subjects underwent a colorectal carcinoma risk assessment questionnaire survey and two fecal occult blood tests (FOBT). Positive results in the initial screening were defined as a positive questionnaire survey or a positive result in at least one FOBT. Participants with positive initial screening results were advised to undergo colonoscopy screening in a hospital. Colonoscopy results were collected from hospital reports and physician follow-ups. Compliance with colonoscopy was analyzed under different screening strategies to identify possible factors influencing residents’ willingness to undergo the procedure. ResultsA total of 21 403 individuals (10.16%) were identified as positive with the questionnaire survey, 31 595 individuals (15.00%) tested positive with at least one FOBT. Combined questionnaire and FOBT positivity was observed in 3 501 individuals (1.66%). Among the 48 453 individuals with positive initial screening results, 17 230 (35.56%) underwent colonoscopy, and a total of 315 cases of colorectal cancer were detected. The sensitivity, specificity value of FOBT initial screening were 83.81% and 84.66%, respectively. According to the combined risk assessment and FOBT initial screening preliminary screening, the lowest colonoscopy compliance rate (25.63%) was observed among individuals with only a positive questionnaire, and the highest compliance rate (52.55%) was among those with both positive questionnaire survey and two positive FOBT results. Multivariate analysis revealed that FOBT positivity had the greatest impact on colonoscopy compliance. Those with one positive FOBT test result were 2.64 times more likely to undergo colonoscopy screening than those with negative FOBT results, while individuals with two positive FOBT results were 3.18 times more likely to do so. After adjusting for FOBT results, individuals with positive questionnaire survey results were 1.43 times more likely to undergo colonoscopy screening than those with negative results (95%CI: 1.34‒1.52). Compared to questionnaire-based risk assessment, FOBT results were more influential in determining compliance with colonoscopy. ConclusionThe choice of initial screening method significantly impacts residents’ compliance with colonoscopy. While implementing colorectal carcinoma screening programs, it is necessary to strictly adhere to screening protocols, including risk assessment and FOBT. Additionally, efforts should be made to raise public awareness, encouraging residents to actively participate in risk assessments and FOBT, thereby improving their compliance with colonoscopy.
2.Effects of Estradiol tablet/Estradiol and dydrogesterone tablet combined with Dan’e fukang decoction on post-operative indicators in patients with high risk of endometrial basal layer injury after induced abortion
Fei FU ; Yu HAN ; Xianmei WEI
China Pharmacy 2025;36(8):966-969
OBJECTIVE To investigate the effects of Estradiol tablet/Estradiol and dydrogesterone tablet combined with Dan’e fukang decoction on postoperative recovery, sex hormone levels, uterine artery blood flow, and endometrium in patients with high risk of endometrial basal layer injury after induced abortion, and evaluate the safety of drug use. METHODS A retrospective analysis was conducted on the clinical data of 244 patients with high risk of endometrial basal layer injury who underwent artificial abortions in our hospital between January 2022 and December 2023. They were divided into control group (120 cases) and observation group (124 cases) according to postoperative medication plan. All patients received anti-infective treatment after induced abortion. Based on it, control group was given Estradiol tablet/Estradiol and dydrogesterone tablet, and observation group was given Estradiol tablet/Estradiol and dydrogesterone tablet+Dan’e fukang decoction, for consecutive 28 d. The time of vaginal bleeding, abdominal pain, return of menstruation, and vaginal bleeding volume were observed in 2 groups; serum sex hormone levels [serum follicle stimulating hormone (FSH), luteinizing hormone (LH), estradiol, and progesterone], uterine artery blood flow parameters [peak systolic blood flow velocity (PSV), pulsatility index (PI), and resistance index (RI)] and endometrial thickness were compared between the two groups before and after treatment. The occurrence of complications and adverse reactions in patients were recorded. RESULTS After treatment, the duration of vaginal bleeding, vaginal bleeding volume, duration of abdominal pain, and menstrual cycle recovery time in observation group were significantly shorter or less than the control group (P<0.05). After treatment, both groups exhibited a significant increase in endometrial thickness, serum FSH and LH levels, and PSV, compared to before treatment, and the observation group was significantly thicker/higher than the control group (P<0.05); the levels of estradiol and progesterone, as well as the values of PI and RI, were significantly lower than those before treatment, and the observation group was significantly lower than the control group (P<0.05). The total incidence of postoperative complications in observation group was significantly lower than control group (P<0.05), but there was no significant difference in the total incidence of adverse reactions between the 2 groups (P>0.05). CONCLUSIONS Estradiol tablet/Estradiol and dydrogesterone tablet combined with Dan’e fukang decoction can accelerate the postoperative recovery of patients with high risk of endometrial basal layer injury after induced abortion, promote endometrial growth, regulate serum sex hormone levels, improve uterine artery blood flow, reduce postoperative complications, and have good safety.
3.Evaluation of the efficacy and safety of cryopreserved deglycerolized red blood cells infusion based on propensity score matching method
Wei YANG ; Fanfan FU ; Lei NIU ; Tingchen XU ; Xin ZHANG ; Hongmei SHI ; Lihui FU ; Chunya MA ; Yang YU
Chinese Journal of Blood Transfusion 2025;38(4):531-536
[Objective] To compare the efficacy and safety of deglycerolized red blood cells (DRBC) and suspended red blood cells (SRBC) based on the propensity score matching (PSM) method, so as to provide evidence for the rational use of DRBC resources in clinical practice. [Methods] A total of 89 patients who received DRBC transfusion and 2 916 patients who received SRBC transfusion in our hospital from January 2023 to September 2024 were included. A 1∶1 nearest neighbor PSM was used to balance covariates such as gender, age, and body mass index (BMI). The changes of hemoglobin (Hb), red blood cell (RBC) count, hematocrit (HCT), and inflammatory markers such as white blood cell (WBC) count, neutrophil (NE) count, C-reactive protein (CRP), and Interleukin-6(IL-6) in the last 72 hours after transfusion were analyzed by SPSS 26.0 and R software to evaluate clinical efficacy and transfusion safety. [Results] The baseline of the two groups was balanced after PSM (P>0.05). There was no significant difference in the total effective rate between the DRBC group (80.9%) and the SRBC group (86.5%) (P>0.05). In the SRBC group, WBC (×10
/L) increased from 9.634±6.742 to 10.147±6.835, CRP (mg/dL) increased from 5.468±4.647 to 6.174±6.114, and IL-6(pg/mL) decreased from 213.733±587.191 to 157.255±552.626. In the DRBC group, WBC (×10
/L) decreased from 11.123±7.880 to 11.011±8.549, CRP (mg/dL) decreased from 5.729±4.761 to 5.326±4.466, and IL-6(pg/mL) decreased from 238.806±639.060 to 152.255±266.558. Compared with the before treatment, the differences between the SRBC group and DRBC group were not statistically significant (P>0.05). Among all patients included in the statistics, the overall incidence of transfusion adverse reactions was 0.205% (6/2 916) in the SRBC group, and no adverse reactions occurred in the DRBC group. The incidence in the SRBC group was higher than that in the DRBC group. [Conclusion] Based on PSM analysis, there was no significant difference in the efficacy and safety of DRBC transfusion compared with SRBC transfusion, which can provide evidence-based support for routine application.
4.Neuromolecular Mechanisms of Transcranial Electrical Stimulation for The Improvement of Alzheimer’s Disease
Yuan YUAN ; Zhuang-Fei CHEN ; Yu FU
Progress in Biochemistry and Biophysics 2025;52(5):1179-1195
Alzheimer’s disease (AD) is one of the most common and severe dementias, severely affecting the physical and mental health and quality of life of patients and imposing a heavy burden on society. Recently, transcranial electrical stimulation (tES) has shown great potential for improving cognitive function in AD. Transcranial direct current stimulation (tDCS) and transcranial alternating current stimulation (tACS) are the two main forms of tES. The present review mainly summarizes the neuromolecular mechanisms of tDCS and tACS for the improvement of AD. Both techniques show similarities in exerting neuroprotective effects, improving cerebral blood flow to alleviate cerebrovascular dysfunction, affecting the state and function of astrocytes, affecting the levels of amyloid β‑protein (Aβ) and phosphorylated tau (p-tau) proteins, and affecting neuroplasticity. Specifically, tDCS improves neuronal status, inhibits neuronal apoptosis, improves cholinergic neurons and reduces oxidative stress, etc., and further exerts neuroprotective effects, but tACS mainly maintains the normal function of cholinergic neurons to exert the effects. For the alleviation of cerebrovascular dysfunction, tDCS has particular advantages in optimizing the neural vascular unit and improving the blood-brain barrier. For astrocytes, tDCS attenuates inflammatory responses by inhibiting their activation. In contrast, the effect of tACS on the activation state of microglial cells is still controversial for enhancement in AD mice and inhibition in patients. For Aβ levels, the effects of tDCS in AD patients are also inconclusive, but in AD rodents, tDCS may regulate molecular pathways related to Aβ production and degradation, thereby removing Aβ. In addition, tACS reduces p-tau levels in AD patients, but tDCS shows a trend toward reduction. In short, the effect of tES on Aβ and p-tau needs further investigation. Regarding neuroplasticity, tDCS improves cortical and synaptic plasticity, but tACS improves only synaptic plasticity. However, both techniques do not affect the molecular level associated with plasticity. On the other hand, this review has summarized some interesting findings of tES in non-AD rodents that may be relevant to the pathological mechanisms of AD. For neuroprotection, tDCS can promote neurogenesis, GABAergic and glutamatergic neurotransmission, modulate neuroprotection-related signaling pathways, reduce oxidative stress, and protect hippocampal neurons. In addition, tDCS inhibits conversion of microglia to the M1 phenotype and promotes conversion to the M2 phenotype, thereby reducing neuroinflammation. Importantly, tDCS induces changes in molecular indices associated with synaptic plasticity. These findings in non-AD rodents provide a reference for understanding the potential effect and possible mechanism of tES in AD and for exploring new approaches to treat other diseases with similar pathological features. In addition, tES has shown some effects in AD rodents, such as tACS improving plasticity, that have not been studied in non-AD rodents. These effects suggest the particular complexity of the pathological mechanisms of AD, which should be considered when applying the results of tES studies in non-AD rodents to AD rodents. In conclusion, this review provides a comprehensive overview of the neuromolecular mechanisms of tES in AD research and highlights its promise as a non-invasive brain stimulation technique in the treatment of AD. Furthermore, tES will play an indispensable role in the treatment of neuropsychiatric disorders and in the study of brain function.
5.Mechanism of Huangqi Chifengtang in Treating Atherosclerosis Based on 16S rRNA Sequencing and Metabolomics
Yuqin LIANG ; Jiaqi FU ; Yunhe SHI ; Fang LU ; Donghua YU ; Shumin LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):94-103
ObjectiveTo investigate the mechanism of action of Huangqi Chifengtang (HQCFT) on rats with atherosclerosis (AS) by regulating the gut microbiota and their metabolites. MethodsA rat model of AS was induced through high-fat diet feeding and vitamin D3 injection, and the modeling lasted for 12 weeks. Fifty eight-week-old male SD rats were randomly divided into five groups: A blank group, a model group, a group receiving a low dose of HQCFT at 1.53 g·kg-1 (HQCFT-L group), a group receiving a high dose of HQCFT at 3.06 g·kg-1 (HQCFT-H group), and a group receiving atorvastatin calcium tablets at 1.8 mg·kg-1 (Ato group), with 10 rats in each group. Oral gavage administration started on the day after model establishment, once daily for four weeks. The efficacy of HQCFT was verified using aortic hematoxylin-eosin (HE) staining and determination of lipid levels and hemorrheology. The real-time polymerase chain reaction (Real-time PCR) was used for detecting inflammatory factor levels in the aorta, high-throughput sequencing for analyzing the gut microbiota composition in intestinal contents, targeted metabolomics for detecting short-chain fatty acid (SCFA) levels, and non-targeted metabolomics for identifying metabolomic profiles of intestinal contents. ResultsCompared with that in the blank group, the aortic tissue of rats in the model group showed significant AS lesions, including endothelial damage, inflammatory infiltration, and formation of fibrous plaques and calcified foci. Moreover, serum triacylglycerol (TG), total cholesterol (TC), and low-density lipoprotein cholesterol (LDL-C) levels were significantly elevated (P<0.05), while high-density lipoprotein cholesterol (HDL-C) levels were significantly reduced (P<0.05). Significant increases were observed in whole blood viscosity, plasma viscosity, and the mRNA expression levels of NOD-like receptor pyrin domain containing 3 (NLRP3), Caspase-1, interleukin (IL)-β, IL-6, and tumor necrosis factor-α (TNF-α) in aortic tissue (P<0.05). Additionally, gut microbiota composition, SCFA levels, and metabolomic profiles were significantly altered. Compared with those in the model group, serum TC, TG, and LDL-C levels, as well as the whole blood viscosity and plasma viscosity, were significantly reduced in all groups treated with HQCFT (P<0.05). Significant decreases were observed in NLRP3 mRNA expression levels in all groups treated with HQCFT, Caspase-1, IL-β, and IL-6 mRNA expression levels in the HQCFT-H group, and TNF-α mRNA expression levels in the HQCFT-L group (P<0.05). HQCFT reversed the increase in the F/B ratio and dialled back the decrease in the relative abundance of Blautia and the increase in that of Desulfovibrio. HQCFT promoted the production of acetic acid, valeric acid, and propionic acid. Non-targeted metabolomics identified 39 differential metabolites, which were mainly enriched in metabolic pathways such as arachidonic acid metabolism and primary bile acid biosynthesis. ConclusionThe mechanism by which HQCFT ameliorates AS injury may be related to the improvement of dyslipidemia and body inflammatory responses by altering gut microbiota composition, promoting SCFA production, and regulating the levels of metabolites in intestinal contents.
6.Phase Change and Quantity-quality Transfer Analysis of Medicinal Materials, Decoction Pieces and Standard Decoction of Haliotidis Concha (Haliotis discus hannai)
Zhihan YANG ; Jingwei ZHOU ; Weichao WANG ; Yu HUANG ; Chuang LUO ; Lian YANG ; Chenyu ZHONG ; Hongping CHEN ; Fu WANG ; Yuan HU ; Youping LIU ; Shilin CHEN ; Lin CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):206-214
ObjectiveTo explore the quantity-quality transfer process of medicinal materials, decoction pieces and standard decoction of Haliotidis Concha(Haliotis discus hannai) by analyzing the physical phase and compositional changes, so as to provide references for the effective control of its quality. MethodsA total of 20 batches of Haliotidis Concha(H. discus hannai) from different habitats were collected and prepared into corresponding calcined products and standard decoction, and the content of CaCO3 of the three samples were determined and the extract yield and transfer rate of CaCO3 were calculated. The changes in elemental composition and their relative contents were investigated by X-ray fluorescence spectrometry(XRF), X-ray diffraction(XRD) was used to study the changes in the phase compositions of the three samples and to establish their respective XRD specific chromatogram. Fourier transform infrared spectrometry(FTIR) was used to study the changes in the chemical composition and content changes of the three samples and to establish their respective FTIR specific chromatogram, while combining hierarchical cluster analysis(HCA), principal component analysis(PCA) and orthogonal partial least squares-discriminant analysis(OPLS-DA) to find the common and differential characteristics, in order to explore the quantity-quality transfer relationship in the preparation process of standard decoction of Haliotidis Concha(H. discus hannai). ResultsThe CaCO3 contents of the 20 batches of medicinal materials, decoction pieces and standard decoction of Haliotidis Concha(H. discus hannai) were 93.87%-98.95%, 96.02%-99.97% and 38.29%-51.96%, respectively, and the extract yield of standard decoction was 1.71%-2.37%, and the CaCO3 transfer rate of decoction pieces-standard decoction was 0.68%-1.27%. XRF results showed that the elemental species and their relative contents contained in Haliotidis Concha and its calcined products had a high degree of similarity, and although there was no obvious difference in the elemental species contained in decoction pieces and standard decoction, the difference in the relative contents was obvious, which was mainly reflected in the decrease of the relative content of element Ca and the increase of the relative content of element Na. XRD results showed that Haliotidis Concha mainly contained CaCO3 of aragonite and calcite, while calcined Haliotidis Concha only contained CaCO3 of calcite, and standard decoction mainly contained CaCO3 of calcite and Na2CO3 of natrite. FTIR results showed that there were internal vibrations of O-H, C-H, C=O, HCO3- and CO32- groups in Haliotidis Concha, while O-H, HCO3- and CO32- groups existed in the calcined products and standard decoction. ConclusionThe changes of Haliotidis Concha and calcined Haliotidis Concha are mainly the increase of CaCO3 content, the transformation of CaCO3 aragonite crystal form to calcite crystal form and the absence of organic components after calcination, and the changes of calcined products and standard decoction are mainly the decrease of CaCO3 content and the increase of Na2CO3 relative content. The method established in the study is applicable to the quality control of the shellfish medicines-decoction pieces- standard decoction, which provides a new idea for the study of quality control of dispensing granules of shellfish medicines.
7.Mechanism of Huangqi Chifengtang in Treating Atherosclerosis Based on 16S rRNA Sequencing and Metabolomics
Yuqin LIANG ; Jiaqi FU ; Yunhe SHI ; Fang LU ; Donghua YU ; Shumin LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):94-103
ObjectiveTo investigate the mechanism of action of Huangqi Chifengtang (HQCFT) on rats with atherosclerosis (AS) by regulating the gut microbiota and their metabolites. MethodsA rat model of AS was induced through high-fat diet feeding and vitamin D3 injection, and the modeling lasted for 12 weeks. Fifty eight-week-old male SD rats were randomly divided into five groups: A blank group, a model group, a group receiving a low dose of HQCFT at 1.53 g·kg-1 (HQCFT-L group), a group receiving a high dose of HQCFT at 3.06 g·kg-1 (HQCFT-H group), and a group receiving atorvastatin calcium tablets at 1.8 mg·kg-1 (Ato group), with 10 rats in each group. Oral gavage administration started on the day after model establishment, once daily for four weeks. The efficacy of HQCFT was verified using aortic hematoxylin-eosin (HE) staining and determination of lipid levels and hemorrheology. The real-time polymerase chain reaction (Real-time PCR) was used for detecting inflammatory factor levels in the aorta, high-throughput sequencing for analyzing the gut microbiota composition in intestinal contents, targeted metabolomics for detecting short-chain fatty acid (SCFA) levels, and non-targeted metabolomics for identifying metabolomic profiles of intestinal contents. ResultsCompared with that in the blank group, the aortic tissue of rats in the model group showed significant AS lesions, including endothelial damage, inflammatory infiltration, and formation of fibrous plaques and calcified foci. Moreover, serum triacylglycerol (TG), total cholesterol (TC), and low-density lipoprotein cholesterol (LDL-C) levels were significantly elevated (P<0.05), while high-density lipoprotein cholesterol (HDL-C) levels were significantly reduced (P<0.05). Significant increases were observed in whole blood viscosity, plasma viscosity, and the mRNA expression levels of NOD-like receptor pyrin domain containing 3 (NLRP3), Caspase-1, interleukin (IL)-β, IL-6, and tumor necrosis factor-α (TNF-α) in aortic tissue (P<0.05). Additionally, gut microbiota composition, SCFA levels, and metabolomic profiles were significantly altered. Compared with those in the model group, serum TC, TG, and LDL-C levels, as well as the whole blood viscosity and plasma viscosity, were significantly reduced in all groups treated with HQCFT (P<0.05). Significant decreases were observed in NLRP3 mRNA expression levels in all groups treated with HQCFT, Caspase-1, IL-β, and IL-6 mRNA expression levels in the HQCFT-H group, and TNF-α mRNA expression levels in the HQCFT-L group (P<0.05). HQCFT reversed the increase in the F/B ratio and dialled back the decrease in the relative abundance of Blautia and the increase in that of Desulfovibrio. HQCFT promoted the production of acetic acid, valeric acid, and propionic acid. Non-targeted metabolomics identified 39 differential metabolites, which were mainly enriched in metabolic pathways such as arachidonic acid metabolism and primary bile acid biosynthesis. ConclusionThe mechanism by which HQCFT ameliorates AS injury may be related to the improvement of dyslipidemia and body inflammatory responses by altering gut microbiota composition, promoting SCFA production, and regulating the levels of metabolites in intestinal contents.
8.Phase Change and Quantity-quality Transfer Analysis of Medicinal Materials, Decoction Pieces and Standard Decoction of Haliotidis Concha (Haliotis discus hannai)
Zhihan YANG ; Jingwei ZHOU ; Weichao WANG ; Yu HUANG ; Chuang LUO ; Lian YANG ; Chenyu ZHONG ; Hongping CHEN ; Fu WANG ; Yuan HU ; Youping LIU ; Shilin CHEN ; Lin CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):206-214
ObjectiveTo explore the quantity-quality transfer process of medicinal materials, decoction pieces and standard decoction of Haliotidis Concha(Haliotis discus hannai) by analyzing the physical phase and compositional changes, so as to provide references for the effective control of its quality. MethodsA total of 20 batches of Haliotidis Concha(H. discus hannai) from different habitats were collected and prepared into corresponding calcined products and standard decoction, and the content of CaCO3 of the three samples were determined and the extract yield and transfer rate of CaCO3 were calculated. The changes in elemental composition and their relative contents were investigated by X-ray fluorescence spectrometry(XRF), X-ray diffraction(XRD) was used to study the changes in the phase compositions of the three samples and to establish their respective XRD specific chromatogram. Fourier transform infrared spectrometry(FTIR) was used to study the changes in the chemical composition and content changes of the three samples and to establish their respective FTIR specific chromatogram, while combining hierarchical cluster analysis(HCA), principal component analysis(PCA) and orthogonal partial least squares-discriminant analysis(OPLS-DA) to find the common and differential characteristics, in order to explore the quantity-quality transfer relationship in the preparation process of standard decoction of Haliotidis Concha(H. discus hannai). ResultsThe CaCO3 contents of the 20 batches of medicinal materials, decoction pieces and standard decoction of Haliotidis Concha(H. discus hannai) were 93.87%-98.95%, 96.02%-99.97% and 38.29%-51.96%, respectively, and the extract yield of standard decoction was 1.71%-2.37%, and the CaCO3 transfer rate of decoction pieces-standard decoction was 0.68%-1.27%. XRF results showed that the elemental species and their relative contents contained in Haliotidis Concha and its calcined products had a high degree of similarity, and although there was no obvious difference in the elemental species contained in decoction pieces and standard decoction, the difference in the relative contents was obvious, which was mainly reflected in the decrease of the relative content of element Ca and the increase of the relative content of element Na. XRD results showed that Haliotidis Concha mainly contained CaCO3 of aragonite and calcite, while calcined Haliotidis Concha only contained CaCO3 of calcite, and standard decoction mainly contained CaCO3 of calcite and Na2CO3 of natrite. FTIR results showed that there were internal vibrations of O-H, C-H, C=O, HCO3- and CO32- groups in Haliotidis Concha, while O-H, HCO3- and CO32- groups existed in the calcined products and standard decoction. ConclusionThe changes of Haliotidis Concha and calcined Haliotidis Concha are mainly the increase of CaCO3 content, the transformation of CaCO3 aragonite crystal form to calcite crystal form and the absence of organic components after calcination, and the changes of calcined products and standard decoction are mainly the decrease of CaCO3 content and the increase of Na2CO3 relative content. The method established in the study is applicable to the quality control of the shellfish medicines-decoction pieces- standard decoction, which provides a new idea for the study of quality control of dispensing granules of shellfish medicines.
9.An animal model of severe acute respiratory distress syndrome for translational research
Kuo‑An CHU ; Chia‑Yu LAI ; Yu‑Hui CHEN ; Fu‑Hsien KUO ; I.‑Yuan CHEN ; You‑Cheng JIANG ; Ya‑Ling LIU ; Tsui‑Ling KO ; Yu‑Show FU
Laboratory Animal Research 2025;41(1):81-92
Background:
Despite the fact that an increasing number of studies have focused on developing therapies for acute lung injury, managing acute respiratory distress syndrome (ARDS) remains a challenge in intensive care medicine.Whether the pathology of animal models with acute lung injury in prior studies differed from clinical symptoms of ARDS, resulting in questionable management for human ARDS. To evaluate precisely the therapeutic effect of trans‑ planted stem cells or medications on acute lung injury, we developed an animal model of severe ARDS with lower lung function, capable of keeping the experimental animals survive with consistent reproducibility. Establishing this animal model could help develop the treatment of ARDS with higher efficiency.
Results:
In this approach, we intratracheally delivered bleomycin (BLM, 5 mg/rat) into rats’ left trachea via a needle connected with polyethylene tube, and simultaneously rotated the rats to the left side by 60 degrees. Within sevendays after the injury, we found that arterial blood oxygen saturation (SpO2 ) significantly decreased to 83.7%, partial pressure of arterial oxygen (PaO2 ) markedly reduced to 65.3 mmHg, partial pressure of arterial carbon dioxide (PaCO2 )amplified to 49.2 mmHg, and the respiratory rate increased over time. Morphologically, the surface of the left lung appeared uneven on Day 1, the alveoli of the left lung disappeared on Day 2, and the left lung shrank on Day 7. A his‑ tological examination revealed that considerable cell infiltration began on Day 1 and lasted until Day 7, with a larger area of cell infiltration. Serum levels of IL-5, IL-6, IFN-γ, MCP-1, MIP-2, G-CSF, and TNF-α substantially rose on Day 7.
Conclusions
This modified approach for BLM-induced lung injury provided a severe, stable, and one-sided (left-lobe) ARDS animal model with consistent reproducibility. The physiological symptoms observed in this severe ARDS animal model are entirely consistent with the characteristics of clinical ARDS. The establishment of this ARDS animal model could help develop treatment for ARDS.
10.Relationships Between Exercise Components and Social Anxiety Levels Among Chinese College Students
Qi CHENG ; Wenbing YU ; Mingxiao JU ; Duo YANG ; Jiannan FU ; Shilong SONG
Psychiatry Investigation 2025;22(2):196-203
Objective:
This study aimed to explore the relationships between various exercise components (frequency, intensity, duration) and social anxiety.
Methods:
A sample of 844 college students in China participated in this study. The Physical Activity Rating Scale-3 assessed participants’ daily physical activity. Social anxiety levels were measured using the Liebowitz Social Anxiety Scale. A questionnaire was developed to collect demographic information and examine the relationships between exercise components and social anxiety levels.
Results:
One-way analysis of variance revealed significant differences in social anxiety levels across varying physical activity intensities. Specifically, students engaging in high levels of physical activity exhibited the lowest social anxiety. Post hoc analyses identified that exercise frequency F3 (p<0.01), exercise duration D5 (p<0.01), and exercise intensity I3 (p<0.01) were significantly associated with the lowest social anxiety levels. Among these components, regression analysis indicated that exercise duration (p<0.01) had the most substantial impact on social anxiety levels, followed by exercise frequency (p<0.05). In contrast, exercise intensity (p>0.05) did not significantly affect social anxiety levels.
Conclusion
The most influential factors associated with decreased social anxiety were: 1) moderate to high exercise intensity, 2) exercise duration of at least one hour, and 3) exercise frequency of at least 1–2 times per week. Among these factors, exercise duration and frequency demonstrated significantly stronger associations with reduced social anxiety. Therefore, it is advisable to prioritize exercise duration and frequency in physical activity programs for college students to reduce social anxiety and achieve more substantial outcomes.

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