1.An experimental method for simultaneous extraction and culture of primary cortical neurons and microglial cells from SD rats
Longcai HE ; Wenxue SONG ; Jiang MING ; Guangtang CHEN ; Junhao WANG ; Yidong LIAO ; Junshuan CUI ; Kaya XU
Chinese Journal of Tissue Engineering Research 2025;29(7):1395-1400
BACKGROUND:Primary cortical neurons and microglial cells play a crucial role in exploring cell therapies for neurological disorders,and most of the current methods for obtaining the two types of cells are cumbersome and require separate extraction.It is therefore crucial to find a convenient and rapid method to extract both types of cells simultaneously. OBJECTIVE:To explore a novel method for simultaneous extraction of primary cortical neurons and microglial cells. METHODS:Newborn suckling SD rats were taken within 24 hours.The brain was removed and placed in a dish with DMEM,and the pia mater was removed for later use.Primary neurons were extracted from the same brain tissue,and then the remaining brain tissue was used to extract microglial cells.The whole process was performed on ice.Extraction and culture steps of primary cortical neurons:The cerebral cortex was taken 2.0-3.0 mm with forceps,and the tissue was digested with papain for 20 minutes.After aborting digestion,the blown tissue presented an adherent tissue suspension.The supernatant cell suspension was obtained,filtered,and dispensed into 15 mL centrifuge tubes.After centrifugation and re-suspension,the cells were inoculated onto 6-well plate crawls coated with L-polylysine.Neuronal morphology was observed at 1-day intervals,and staining could be performed for identification using immunofluorescence staining of MAP2 and β-Tubulin by day 7.Microglia extraction and culture steps:The remaining brain tissue at 8-10 mm thick was subjected to microglial cell extraction,digested by trypsin for 20 minutes.After digestion was stopped,the tissue was blown to a homogenate,and then the homogenate was transferred to the culture bottle for culture.On day 14,the culture flasks were sealed and subjected to constant temperature horizontal shaking for 2 hours.Microglial cells were shed in the supernatant.Purified microglial cells were taken and continued to be cultured for 3 days for identification by Iba1 immunofluorescence staining. RESULTS AND CONCLUSION:(1)After 24 hours of culture,the neurons were adherent to the wall,the cytosol was enlarged,and some neurons developed synapses.After 3 and 5 days of culture,the cytosol was further enlarged,and most of the neurons were in the form of synapses,and some neurons were growing in clusters.On day 7,neuronal synapses were prolonged and thickened,and they were connected with each other to form a network.The neurons were identified by β-Tubulin and MAP2 immunofluorescence staining.(2)The cells grew close to the wall on day 1 of culture.On days 3,5,and 7,the density of microglial cells was small,and the cell morphology was bright oval or round,but the cells basically grew in clumps on the upper layer of other cells.On day 10,the density of microglial cells increased significantly.On day 14,microglial cells grew in dense clumps on the upper layer of other cells,and then they could be isolated and purified.The isolated and purified cells were taken and re-cultured to day 3 and identified as microglial cells by Iba1 immunofluorescence;their purity was greater than 95%.(3)The results show that primary cortical neurons and microglial cells obtained by this method after extraction and culture are of high purity,good morphology,and high viability.
2.Effect of Anmeidan on Cognitive Function and Metabolic Profiling in Insomnia Model Rats Based on Untargeted Metabolomics
Feizhou LI ; Bo XU ; Zijing YE ; Lianyu LI ; Andong ZHANG ; Ping WANG ; Linlin CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(10):54-64
ObjectiveTo elucidate the potential mechanisms by which the classic prescription Anmeidan alleviates cognitive impairment in insomnia model rats through metabolic profiling. MethodsA total of 60 SD rats were randomly divided into six groups: blank group, model group, low-, medium-, and high-dose Anmeidan groups, and the Suvorexant group, with 10 rats in each group. Except for the blank group, the insomnia model was established in all other groups via intraperitoneal injection of para-chlorophenylalanine. The Suvorexant group was administered Suvorexant solution (30 mg·kg-1·d-1) by gavage, while the low-, medium-, and high-dose Anmeidan groups received Anmeidan decoction (4.55, 9.09, 18.18 g·kg-1·d-1) by gavage. The blank group received an equivalent volume of normal saline. The open field test was used to assess spatial exploration and anxiety/depressive-like behaviors in rats. Serum levels of epidermal growth factor (EGF), brain-derived neurotrophic factor (BDNF), and vasoactive intestinal peptide (VIP) were measured using enzyme-linked immunosorbent assay (ELISA). Untargeted metabolomics was employed to identify differential metabolites in rat serum, and systematic biological methods were applied to analyze the potential targets and pathways of Anmeidan. ResultsCompared to the blank group, the model group exhibited significant reductions in total distance traveled, average speed, number of entries into the central area, time spent in the central area, and frequency of upright events (P<0.01), along with significant decreases in VIP, EGF, and BDNF levels (P<0.05,P<0.01). A total of 100 differential metabolites were identified between the model and blank groups. Compared to the model group, the low-, medium-, and high-dose Anmeidan groups showed significant increases in total distance traveled, average speed, number of entries into the central area, time spent in the central area, and frequency of upright events (P<0.05,P<0.01), as well as a significant increase in VIP levels (P<0.05,P<0.01). Anmeidan significantly reversed abnormal changes in 67 metabolites compared to the model group. A combined analysis identified 134 potential targets of Anmeidan, with network topology analysis suggesting that Caspase-3, B-cell lymphoma 2 (Bcl-2), nuclear transcription factor-κB (NF-κB), interleukin-1β (IL-1β), interleukin-2 (IL-2), matrix metalloproteinase-9 (MMP-9), and Toll-like receptor 4 (TLR4), among others, may serve as key targets of Anmeidan. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis revealed major enriched pathways, including the cyclic adenosine monophosphate (cAMP) signaling pathway, hypoxia inducible factor-1 (HIF-1) signaling pathway, and IL-17 signaling pathway. ConclusionThis study demonstrates that Anmeidan can recalibrate abnormal metabolic profiles in insomnia model rats to mitigate cognitive impairment, with its mechanisms of action potentially involving the regulation of immune-inflammatory responses, energy metabolism, and apoptosis-related pathways.
3.Correlation between CD4+T lymphocytes and viral load in newly identified human immunodeficiency virus infected individuals in Huangpu District,Shanghai,2023
Shuang ZHU ; Jieqiong ZHAN ; Lili SONG ; Yu WANG ; Wei CHU ; Weihua CHEN ; Huimin XU
Shanghai Journal of Preventive Medicine 2025;37(2):125-128
ObjectiveTo analyze the detected results of CD4+T lymphocytes and viral load in newly identified human immunodeficiency virus (HIV) infected patients in Huangpu District of Shanghai in 2023, to explore the correlation between them, so as to provide a scientific basis for the development of targeted prevention and control measures and antiviral treatment programs. MethodsThe data of CD4 cell count, viral load and demographic characteristics of the newly infected patients living with HIV in Huangpu District, Shanghai in 2023 were collected and analyzed by using descriptive epidemiological method. ResultsThe mean CD4 cell count of the 67 newly identified HIV infected patients in Huangpu District was (301.22±235.19) cells·µL-1, with a mean viral load of (5.15±1.28) ×105 copies·mL-1.There were statistically significant differences in CD4 cell count and viral load among different age groups (P<0.05), but there were no statistically significant differences by gender and marital status (both P>0.05). The CD4 cell count and CD4/CD8 ratio both were negatively correlated with the lg value of viral load (r=-0.290, -0.378; P=0.027, 0.002). ConclusionThe CD4 cell counts of the newly identified HIV infected patients in Huangpu District in 2023 were generally low, the proportion of patients with high viral load was high, but the risk for elderly infected with HIV was high. The elderly have gradually become the key population for AIDS prevention and control in Huangpu District. It is recommended to expand HIV screening in the elderly to reduce the risk of HIV transmission and increase the rate of early detection and treatment.
4.Applications of EEG Biomarkers in The Assessment of Disorders of Consciousness
Zhong-Peng WANG ; Jia LIU ; Long CHEN ; Min-Peng XU ; Dong MING
Progress in Biochemistry and Biophysics 2025;52(4):899-914
Disorders of consciousness (DOC) are pathological conditions characterized by severely suppressed brain function and the persistent interruption or loss of consciousness. Accurate diagnosis and evaluation of DOC are prerequisites for precise treatment. Traditional assessment methods are primarily based on behavioral scales, which are inherently subjective and rely on observable behaviors. Moreover, traditional methods have a high misdiagnosis rate, particularly in distinguishing minimally conscious state (MCS) from vegetative state/unresponsive wakefulness syndrome (VS/UWS). This diagnostic uncertainty has driven the exploration of objective, reliable, and efficient assessment tools. Among these tools, electroencephalography (EEG) has garnered significant attention for its non-invasive nature, portability, and ability to capture real-time neurodynamics. This paper systematically reviews the application of EEG biomarkers in DOC assessment. These biomarkers are categorized into 3 main types: resting-state EEG features, task-related EEG features, and features derived from transcranial magnetic stimulation-EEG (TMS-EEG). Resting-state EEG biomarkers include features based on spectrum, microstates, nonlinear dynamics, and brain network metrics. These biomarkers provide baseline representations of brain activity in DOC patients. Studies have shown their ability to distinguish different levels of consciousness and predict clinical outcomes. However, because they are not task-specific, they are challenging to directly associate with specific brain functions or cognitive processes. Strengthening the correlation between resting-state EEG features and consciousness-related networks could offer more direct evidence for the pathophysiological mechanisms of DOC. Task-related EEG features include event-related potentials, event-related spectral modulations, and phase-related features. These features reveal the brain’s responses to external stimuli and provide dynamic information about residual cognitive functions, reflecting neurophysiological changes associated with specific cognitive, sensory, or behavioral tasks. Although these biomarkers demonstrate substantial value, their effectiveness rely on patient cooperation and task design. Developing experimental paradigms that are more effective at eliciting specific EEG features or creating composite paradigms capable of simultaneously inducing multiple features may more effectively capture the brain activity characteristics of DOC patients, thereby supporting clinical applications. TMS-EEG is a technique for probing the neurodynamics within thalamocortical networks without involving sensory, motor, or cognitive functions. Parameters such as the perturbational complexity index (PCI) have been proposed as reliable indicators of consciousness, providing objective quantification of cortical dynamics. However, despite its high sensitivity and objectivity compared to traditional EEG methods, TMS-EEG is constrained by physiological artifacts, operational complexity, and variability in stimulation parameters and targets across individuals. Future research should aim to standardize experimental protocols, optimize stimulation parameters, and develop automated analysis techniques to improve the feasibility of TMS-EEG in clinical applications. Our analysis suggests that no single EEG biomarker currently achieves an ideal balance between accuracy, robustness, and generalizability. Progress is constrained by inconsistencies in analysis methods, parameter settings, and experimental conditions. Additionally, the heterogeneity of DOC etiologies and dynamic changes in brain function add to the complexity of assessment. Future research should focus on the standardization of EEG biomarker research, integrating features from resting-state, task-related, and TMS-EEG paradigms to construct multimodal diagnostic models that enhance evaluation efficiency and accuracy. Multimodal data integration (e.g., combining EEG with functional near-infrared spectroscopy) and advancements in source localization algorithms can further improve the spatial precision of biomarkers. Leveraging machine learning and artificial intelligence technologies to develop intelligent diagnostic tools will accelerate the clinical adoption of EEG biomarkers in DOC diagnosis and prognosis, allowing for more precise evaluations of consciousness states and personalized treatment strategies.
5.Oxylipidomics Combined with Transcriptomics Reveals Mechanism of Jianpi Huogu Prescription in Treating Steroid-induced Osteonecrosis of Femoral Head in Rats
Lili WANG ; Qun LI ; Zhixing HU ; Qianqian YAN ; Liting XU ; Xiaoxiao WANG ; Chunyan ZHU ; Yanqiong ZHANG ; Weiheng CHEN ; Haijun HE ; Chunfang LIU ; Na LIN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):190-199
ObjectiveTo unveil the mechanism of Jianpi Huogu prescription (JPHGP) in ameliorating the dyslipidemia of steroid-induced osteonecrosis of the femur head (SONFH) by oxylipidomics combined with transcriptomics. MethodsSixty SD rats were assigned into normal, model, low-, medium-, and high-dose (2.5, 5, 10 g·kg-1, respectively) JPHGP, and Jiangushengwan (1.53 g·kg-1) groups. Lipopolysaccharide was injected into the tail vein at a dose of 20 μg·kg-1 on days 1 and 2, and methylprednisolone sodium succinate was injected at a dose of 40 mg·kg-1 into the buttock muscle on days 3 to 5. The normal group received an equal volume of normal saline. Drug administration by gavage began 4 weeks after the last injection, and samples were taken after administration for 8 weeks. Hematoxylin-eosin staining was conducted to reveal the histopathological changes of the femoral head, and the number of adipocytes, the rate of empty bone lacunae, and the trabecular area were calculated. Micro-computed tomography was used for revealing the histological and histomorphometrical changes of the femoral head. Enzyme-linked immunosorbent assay was employed to measure the serum levels of triglyceride (TG), total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), apolipoprotein A1 (ApoA1), and apolipoprotein B (ApoB). At the same time, the femoral head was collected for oxylipidomic and transcriptomic detection. The differential metabolites and differential genes were enriched and analyzed, and the target genes regulating lipid metabolism were predicted. The predicted target proteins were further verified by molecular docking, immunohistochemistry, and Western blot. ResultsCompared with the normal group, the model group showcased thinning of the femoral head, trabecular fracture, karyopyknosis, subchondral cystic degeneration, increases in the number of adipocytes and the rate of empty bone lacunae (P<0.01), a reduction in the trabecular area (P<0.01), decreases in BMD, Tb.Th, Tb.N, and BV/TV, and increases in Tb.Sp and BS/BV (P<0.01). Compared with the model group, the JPHGP groups showed no obvious thinning of the femoral head or subchondroidal cystic degeneration. The high- and medium-dose JPHGP groups presented declines in the number of adipocytes and the rate of empty bone lacunae, an increase in the trabecular area (P<0.05, P<0.01), rises in BMD, Tb.Th, Tb.N, and BV/TV, and decreases in Tb.Sp and BS/BV (P<0.05, P<0.01). Compared with the normal group, the model group showcased raised serum levels of TG, TC, LDL, and ApoB and lowered serum levels of HDL and ApoA1 (P<0.01). Compared with the model group, the JPHGP groups had lowered serum levels of TG, TC, LDL, and ApoB (P<0.05, P<0.01) and a risen serum level of ApoA1 (P<0.05, P<0.01). Moreover, the serum level of HDL in the high-dose JPHGP group increased (P<0.01). A total of 19 different metabolites of disease set and drug set were screened out by oxylipidomics of the femoral head, and 119 core genes with restored expression were detected by transcriptomics. The enriched pathways were mainly concentrated in inflammation, lipids, apoptosis, and osteoclast differentiation. Molecular docking, immunohistochemistry, and Western blot results showed that compared with the normal group, the model group displayed increased content of 5-lipoxygenase (5-LO) and peroxisome proliferator-activated receptor γ (PPARγ) in the femoral head (P<0.01). Compared with the model group, medium- and high-dose JPHGP reduced the content of 5-LO and PPARγ (P<0.05, P<0.01). ConclusionJPHGP can restore the levels of oxidized lipid metabolites by regulating the 5-LO-PPARγ axis to treat SONFH in rats. Relevant studies provide experimental evidence for the efficacy mechanism of JPHGP in the treatment of SONFH.
6.Oxylipidomics Combined with Transcriptomics Reveals Mechanism of Jianpi Huogu Prescription in Treating Steroid-induced Osteonecrosis of Femoral Head in Rats
Lili WANG ; Qun LI ; Zhixing HU ; Qianqian YAN ; Liting XU ; Xiaoxiao WANG ; Chunyan ZHU ; Yanqiong ZHANG ; Weiheng CHEN ; Haijun HE ; Chunfang LIU ; Na LIN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):190-199
ObjectiveTo unveil the mechanism of Jianpi Huogu prescription (JPHGP) in ameliorating the dyslipidemia of steroid-induced osteonecrosis of the femur head (SONFH) by oxylipidomics combined with transcriptomics. MethodsSixty SD rats were assigned into normal, model, low-, medium-, and high-dose (2.5, 5, 10 g·kg-1, respectively) JPHGP, and Jiangushengwan (1.53 g·kg-1) groups. Lipopolysaccharide was injected into the tail vein at a dose of 20 μg·kg-1 on days 1 and 2, and methylprednisolone sodium succinate was injected at a dose of 40 mg·kg-1 into the buttock muscle on days 3 to 5. The normal group received an equal volume of normal saline. Drug administration by gavage began 4 weeks after the last injection, and samples were taken after administration for 8 weeks. Hematoxylin-eosin staining was conducted to reveal the histopathological changes of the femoral head, and the number of adipocytes, the rate of empty bone lacunae, and the trabecular area were calculated. Micro-computed tomography was used for revealing the histological and histomorphometrical changes of the femoral head. Enzyme-linked immunosorbent assay was employed to measure the serum levels of triglyceride (TG), total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), apolipoprotein A1 (ApoA1), and apolipoprotein B (ApoB). At the same time, the femoral head was collected for oxylipidomic and transcriptomic detection. The differential metabolites and differential genes were enriched and analyzed, and the target genes regulating lipid metabolism were predicted. The predicted target proteins were further verified by molecular docking, immunohistochemistry, and Western blot. ResultsCompared with the normal group, the model group showcased thinning of the femoral head, trabecular fracture, karyopyknosis, subchondral cystic degeneration, increases in the number of adipocytes and the rate of empty bone lacunae (P<0.01), a reduction in the trabecular area (P<0.01), decreases in BMD, Tb.Th, Tb.N, and BV/TV, and increases in Tb.Sp and BS/BV (P<0.01). Compared with the model group, the JPHGP groups showed no obvious thinning of the femoral head or subchondroidal cystic degeneration. The high- and medium-dose JPHGP groups presented declines in the number of adipocytes and the rate of empty bone lacunae, an increase in the trabecular area (P<0.05, P<0.01), rises in BMD, Tb.Th, Tb.N, and BV/TV, and decreases in Tb.Sp and BS/BV (P<0.05, P<0.01). Compared with the normal group, the model group showcased raised serum levels of TG, TC, LDL, and ApoB and lowered serum levels of HDL and ApoA1 (P<0.01). Compared with the model group, the JPHGP groups had lowered serum levels of TG, TC, LDL, and ApoB (P<0.05, P<0.01) and a risen serum level of ApoA1 (P<0.05, P<0.01). Moreover, the serum level of HDL in the high-dose JPHGP group increased (P<0.01). A total of 19 different metabolites of disease set and drug set were screened out by oxylipidomics of the femoral head, and 119 core genes with restored expression were detected by transcriptomics. The enriched pathways were mainly concentrated in inflammation, lipids, apoptosis, and osteoclast differentiation. Molecular docking, immunohistochemistry, and Western blot results showed that compared with the normal group, the model group displayed increased content of 5-lipoxygenase (5-LO) and peroxisome proliferator-activated receptor γ (PPARγ) in the femoral head (P<0.01). Compared with the model group, medium- and high-dose JPHGP reduced the content of 5-LO and PPARγ (P<0.05, P<0.01). ConclusionJPHGP can restore the levels of oxidized lipid metabolites by regulating the 5-LO-PPARγ axis to treat SONFH in rats. Relevant studies provide experimental evidence for the efficacy mechanism of JPHGP in the treatment of SONFH.
7.Alanine transferase test results and exploration of threshold adjustment strategies for blood donors in Shenzhen, China
Xin ZHENG ; Yuanye XUE ; Haobiao WANG ; Litiao WU ; Ran LI ; Yingnan DANG ; Tingting CHEN ; Xiaoxuan XU ; Xuezhen ZENG ; Jinfeng ZENG
Chinese Journal of Blood Transfusion 2025;38(4):488-494
[Objective] To conduct a retrospective statistical comparison of alanine aminotransferase (ALT) test values in blood donors prior to blood collection, aiming to analyze the objective characteristics of the population with elevated ALT levels (ALT>50 U/L) and provide reference data for adjusting the screening eligibility threshold for ALT. [Methods] The preliminary ALT screening data of 30 341 blood donor samples collected prior to blood donation from three smart blood donation sites at the Shenzhen Blood Center between 2022 and 2023 were extracted and compared with data from a health examination department of a tertiary hospital in Shenzhen (representing the general population, n=24 906). Both datasets were categorized and statistically described. A retrospective analysis was conducted to examine the associations between ALT test results and factors such as donors' gender, age, ethnicity, donation site, donation season, and frequency of blood donation. [Results] The ALT levels in both blood donors and the general population were non-normally distributed. The 95th percentile of ALT values was calculated as 61.4 U/L (male: 67.8 U/L, female: 39.3 U/L) for blood donors and 58.1 U/L (male: 63.7 U/L, female: 51.2 U/L) for the general population. The non-compliance rates (ALT>50 U/L) were 7.65% (2 321/30 341) in blood donors and 7.08% (1 763/24 906) in the general population. There were significant differences (P<0.05) in the ALT failure rate among blood donors based on gender, age, and donation site, but no significant differences (P>0.05) during the blood donation season. There was no statistically significant difference (P>0.05) in the positive rates of four serological markers (HBsAg, anti HCV, HIV Ag/Ab, anti TP) for blood screening pathogens between ALT unqualified and qualified individuals (2.05% vs 1.5%). If the ALT qualification threshold was raised from 50 U/L to 90 U/L, the non qualification rates of male and female blood donors would decrease from 9.82% (2 074/21 125) to 2.23% (471/21 125) and from 2.70% (249/9 216) to 0.75% (69/9 216), respectively. Among the 154 blood donors who donated blood more than 3 times, 88.31% of the 248 ALT test results were in the range of 50-90 U/L. Among them, 9 cases had ALT>130 U/L, and ALT was converted to qualified in subsequent blood donations. [Conclusion] There are differences in the ALT failure rate among blood donors of different genders and ages, and different blood donation sites and operators can also affect the ALT detection values of blood donors. The vast majority of blood donors with ALT failure are caused by transient and non pathological factors. With the widespread use of blood virus nucleic acid testing, appropriately increasing the ALT qualification threshold for blood donors can expand the qualified population and alleviate the shortage of blood sources, and the risk of blood safety will not increase.
8.Novel outpatient infusion model of blinatumomab: case studies of two patients
Guijun LI ; Xuemei JIANG ; Xin WANG ; Qiuxia XU ; Jianhui LI ; Susi DAI ; Ying HE ; Hai YI ; Dan CHEN
Chinese Journal of Blood Transfusion 2025;38(4):557-561
[Objective] To evaluate the feasibility of a novel outpatient infusion model for blinatumomab in two acute lymphoblastic leukemia (ALL) patients, aiming to address challenges of poor treatment tolerance, high healthcare costs, and compromised quality of life, thereby providing clinical insights for broader adoption of this approach. [Methods] Two post-allogeneic hematopoietic stem cell transplantation (allo-HSCT) patients undergoing blinatumomab maintenance therapy were selected to evaluate the efficacy of the outpatient infusion model. Patient selection criteria, nursing protocols, standardized workflows, and advancements in infusion practices were systematically analyzed combined with a review of global developments in this field. [Results] Both patients completed outpatient blinatumomab infusion without severe adverse events, demonstrating preliminary feasibility and safety of this model. The novel approach enhanced treatment convenience, reduced hospitalization costs, and improved quality of life. [Conclusion] Despite the limited sample size, this pilot study highlights the potential of outpatient blinatumomab administration as a viable alternative to traditional inpatient regimens.
9.Analysis on current situation of drug use in Chinese aeromedical rescue
Aobo LI ; Wei WANG ; Yanrong ZHU ; Chunyan XIN ; Chen LI ; Xu GE
China Pharmacy 2025;36(9):1035-1039
OBJECTIVE To analyze the current situation of drug use in domestic aeromedical rescue, and provide references for the development of aeromedical rescue services and the rational use of drugs on board. METHODS All literature on aeromedical rescue in China were retrieved from the databases of SinoMed, CNKI, VIP, and Wanfang data up to September 1st, 2024. Extracting descriptive analysis were conducted on the literature screened by the inclusion and exclusion criteria. RESULTS A total of 36 literature were included. Aeromedical rescue cases had been reported in China since 1985, with a cumulative total of 5 370 cases reported. Prehospital rescue performed 861 cases, with 96.40% of them involving the use of at least 9 categories, totaling at least 10 different drugs, primarily emergency drugs. Interhospital rescue performed 4 509 cases, and 85.23% of them used over 48 kinds of drugs across 19 categories, mainly emergency drugs supplemented by specialty drugs. From the view of transportation, 5 166 air transfers were made by helicopters, of which 88.00% involved the use of drugs, and 204 cases by fixed-wing aircraft, of which 91.18% involved the use of drugs. CONCLUSIONS Drugs are frequently used in aeromedical rescue involving a wide variety of types in China. It is imperative to strengthen the focus on the equipment and rational use of drugs in aeromedical rescue, thereby facilitating the establishment of a standardized theoretical framework.
10.Study on the safety and pharmacological effect on improving dyspepsia of Shuangshu decoction in rats
Xinyuan CHEN ; Changzhou XIONG ; Jiongfen LI ; Kangyi YU ; Huan XU ; Yingxia WANG ; Dan LIAO ; Junyu TAO ; Ziyi YANG ; Caizhi LIN
China Pharmacy 2025;36(9):1059-1064
OBJECTIVE To study the safety of Shuangshu decoction in rats and its efficacy in improving functional dyspepsia (FD) in rats. METHODS In safety test, 40 rats were divided into blank control group, Shuangshu decoction low-dose, medium- dose and high-dose groups [108, 216, 324 g/(kg·d), calculated by raw medicine, the same applies below]; they were given relevant medicine intragastrically, for continuous 14 days. The mortality and toxic reactions of rats were recorded, and the organ indexes of the liver, kidney, spleen, lung and heart of rats were calculated; the pathological morphological changes in the liver, kidney, spleen, lung, heart, stomach, duodenum, and colon were observed to evaluate the acute toxicity of Shuangshu decoction. Another 40 rats were grouped and administered in the same way for 30 consecutive days. The mortality and toxic reactions of the rats were recorded, and the corresponding organ indexes were calculated. The pathological morphological changes in the corresponding organs were observed, and blood routine and serum biochemical indicators were measured, in order to assess the subacute toxicity of Shuangshu decoction. In pharmacodynamic experiments: 50 rats were divided into blank control group, model group, and Shuangshu decoction low-, medium-, and high-dose groups (9.45, 18.9, 37.8 g/kg), with 10 rats in each group. Except for blank control group, rats in all other groups were used to establish the FD rat model by subcutaneous injection of loperamide (3.5 mg/kg). Rats in each group were administered the corresponding drug solution/normal saline intragastrically, once a day, for 14 consecutive days. After the last medication, fecal moisture content, intestinal propulsion rate, gastric emptying rate and serum level of motilin were all detected, and interstitial cell of Cajal (ICC) ultrastructure of rats was observed in colon tissue. RESULTS The safety experiments showed that no death occurred in each dose group, and no significant difference was found in organ coefficient, routine blood and serum biological index, compared to blank control group (P>0.05); no abnormality was found in organ appearance and pathological sections. The results of the pharmacodynamic experiments showed that, compared with the blank control group, the fecal moisture content, gastric emptying rate, intestinal propulsion rate, and serum motilin levels in the model group were significantly decreased (P<0.05); in the colonic tissue, the mitochondria in the ICC exhibited severe swelling with the disappearance of cristae, and the endoplasmic reticulum was dilated. Compared with model group, the rats in Shuangshu decoction high-dose group showed significant increases in the above quantitative indicators (P< 0.05); additionally, there was a large number of mitochondria in the ICC of the colonic tissue, with clear cristae and regular arrangement. CONCLUSIONS Shuangshu decoction is safe and has a beneficial improving effect on FD rats; its mechanism of action may be related to the regulation of gastrointestinal hormone expression to promote gastric emptying and intestinal propulsion, as well as the repair of mitochondrial structure in ICCs to restore gastrointestinal function.

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