1.Exploration in Relationship Between Mitochondrial Homeostasis Dysregulation and Panvascular Diseases Based on Theory of ''Positive Deficiency Phlegm Stasis''
Hongping LI ; Jie WANG ; Zhenpeng ZHANG ; Chao LIU ; Lanchun LIU ; Chengzhi HOU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(1):30-38
Panvascular diseases represent systemic vascular disorders characterized by atherosclerosis as their core pathological feature. Their incidence rates continue to rise, posing significant challenges for clinical management. Based on Traditional Chinese Medicine (TCM) theory of ''positive deficiency phlegm stasis'', this study delved into the pivotal role of mitochondrial homeostasis dysregulation in the pathogenesis and progression of pan-vascular diseases, along with its intrinsic connection to TCM pathogenesis. Mitochondrial homeostasis dysregulation pervades the entire course of these diseases, with mitochondrial oxidative stress serving as the initiating factor. Excessive reactive oxygen species (ROS) trigger endothelial dysfunction, lipid accumulation, and inflammatory initiation. Additionally, the imbalance between mitochondrial autophagy and apoptosis constitutes a pivotal link in disease progression. Excessive or insufficient autophagy may lead to the accumulation of damaged mitochondria and excessive cellular apoptosis, thereby promoting plaque instability. Furthermore, mitochondrial metabolic reprogramming impairs energy supply and function in vascular wall cells, hindering subsequent vascular repair. These pathological processes constitute the microscopic manifestation of the core pathogenesis, which is characterized by ''the intermingle of phlegm and stasis and the deficiency of healthy Qi''. Specifically, the endogenous phlegm-turbidity drives mitochondrial oxidative stress injuries, the mutual entanglement of phlegm and stasis induces an imbalance between mitochondrial autophagy and apoptosis, while deficiency of healthy Qi propels mitochondrial energy metabolism disorders and reprogramming. In view of this, this study proposed to employ phlegm-resolving and turbidity-clearing methods to mitigate mitochondrial oxidative stress injuries, phlegm-resolving and blood-activating methods to regulate mitochondrial autophagy and apoptosis, and spleen-tonifying and kidney-nourishing methods to modulate mitochondrial metabolic reprogramming. This approach can prevent and treat panvascular diseases by multi-target regulation of mitochondrial homeostasis, providing a theoretical framework and therapeutic strategies for the prevention and treatment of panvascular diseases through integrated Chinese and Western medicine.
2.Material Basis of Anti-Inflammatory Efficacy and Mechanism of Action of Bushen Tongdu Prescription Based on UPLC-LTQ-Orbitrap-MS and Network Pharmacology
Yan RONG ; Lulu JING ; Hongping HOU ; Huijun WANG ; Lihua CHEN ; Yunxin CHEN ; Liang LI ; Li LIN ; Xiaoqin LUO ; Haiyu ZHAO ; Xiaolu WEI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):152-161
ObjectiveThis paper aims to investigate the material basis of the anti-inflammatory efficacy and mechanism of action of Bushen Tongdu prescription (BSTDP). MethodsThe chemical components of BSTDP and its blood-absorbed components in vivo were systematically identified by using ultra-performance liquid chromatography-linear ion trap-electrostatic field orbitrap high-resolution mass spectrometry (UPLC-LIT-Orbitrap-MS). Network pharmacology was employed to screen blood-absorbed bioactive components and potential targets of this formula. A protein-protein interaction (PPI) network of core targets was constructed to conduct enrichment analysis. Molecular docking was further utilized to verify the binding affinity between key components and targets. The inflammatory model was established and verified in vivo by using a transgenic zebrafish Tg (mpx: GFP). At three days post-fertilization (3 dpf), larvae of zebrafish were randomly assigned to blank group, model group, positive drug dexamethasone acetate group (75 μmol·L-1), and BSTDP groups with low, medium, and high doses (500, 1 000, and 2 000 mg·L-1). The distribution and quantity of neutrophils in the yolk sac region were observed under a fluorescence microscope. The mRNA expression levels of key genes in the toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (MyD88)/nuclear factor kappa-B (NF-κB) signaling pathway and inflammatory factors including interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF-α) were detected by Real-time quantitative polymerase chain reaction (Real-time PCR). ResultsA total of 120 chemical components were identified in BSTDP, among which 26 original components were confirmed by using serum pharmacochemical methods. A total of 227 common targets linking rheumatoid arthritis (RA) and the blood-absorbed components were screened by network pharmacology. It is suggested that pseudobrucine, vomicine, sinapine, rehmannioside, cinnamyl alcohol glycoside, and methylephedrine exert anti-inflammatory effects by acting on core targets including protein kinase B1 (Akt1), signal transducer and activator of transcription 3 (STAT3), tumor necrosis factor (TNF), TLR4, mitogen-activated protein kinase 14 (MAPK14), and phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit α (PIK3CA), thereby modulating multiple signaling pathways such as TLR4 and NF-κB. In vivo verification in zebrafish demonstrates that the maximum tolerable concentration of Bushen Tongdu Formula is 2 000 mg·L-1. Compared to those in the blank group, zebrafish in the model group showed a significantly higher number of neutrophils in the yolk sac region (P<0.01) and rising mRNA levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β (P<0.01). Compared to that in the model group, the number of neutrophils was significantly reduced in BSTDP groups with medium and high doses, as well as the dexamethasone acetate group (P<0.05, P<0.01). There was no statistically significant difference in the low dose group. The mRNA expression levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β were significantly down-regulated (P<0.05, P<0.01). ConclusionThis paper identifies the material basis of the efficacy of BSTDP, demonstrating that the formula can exert an anti-inflammatory effect through the TLR4/MyD88/NF-κB signaling pathway. The results provide scientific experimental evidence for its further clinical application.
3.Material Basis of Anti-Inflammatory Efficacy and Mechanism of Action of Bushen Tongdu Prescription Based on UPLC-LTQ-Orbitrap-MS and Network Pharmacology
Yan RONG ; Lulu JING ; Hongping HOU ; Huijun WANG ; Lihua CHEN ; Yunxin CHEN ; Liang LI ; Li LIN ; Xiaoqin LUO ; Haiyu ZHAO ; Xiaolu WEI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):152-161
ObjectiveThis paper aims to investigate the material basis of the anti-inflammatory efficacy and mechanism of action of Bushen Tongdu prescription (BSTDP). MethodsThe chemical components of BSTDP and its blood-absorbed components in vivo were systematically identified by using ultra-performance liquid chromatography-linear ion trap-electrostatic field orbitrap high-resolution mass spectrometry (UPLC-LIT-Orbitrap-MS). Network pharmacology was employed to screen blood-absorbed bioactive components and potential targets of this formula. A protein-protein interaction (PPI) network of core targets was constructed to conduct enrichment analysis. Molecular docking was further utilized to verify the binding affinity between key components and targets. The inflammatory model was established and verified in vivo by using a transgenic zebrafish Tg (mpx: GFP). At three days post-fertilization (3 dpf), larvae of zebrafish were randomly assigned to blank group, model group, positive drug dexamethasone acetate group (75 μmol·L-1), and BSTDP groups with low, medium, and high doses (500, 1 000, and 2 000 mg·L-1). The distribution and quantity of neutrophils in the yolk sac region were observed under a fluorescence microscope. The mRNA expression levels of key genes in the toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (MyD88)/nuclear factor kappa-B (NF-κB) signaling pathway and inflammatory factors including interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF-α) were detected by Real-time quantitative polymerase chain reaction (Real-time PCR). ResultsA total of 120 chemical components were identified in BSTDP, among which 26 original components were confirmed by using serum pharmacochemical methods. A total of 227 common targets linking rheumatoid arthritis (RA) and the blood-absorbed components were screened by network pharmacology. It is suggested that pseudobrucine, vomicine, sinapine, rehmannioside, cinnamyl alcohol glycoside, and methylephedrine exert anti-inflammatory effects by acting on core targets including protein kinase B1 (Akt1), signal transducer and activator of transcription 3 (STAT3), tumor necrosis factor (TNF), TLR4, mitogen-activated protein kinase 14 (MAPK14), and phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit α (PIK3CA), thereby modulating multiple signaling pathways such as TLR4 and NF-κB. In vivo verification in zebrafish demonstrates that the maximum tolerable concentration of Bushen Tongdu Formula is 2 000 mg·L-1. Compared to those in the blank group, zebrafish in the model group showed a significantly higher number of neutrophils in the yolk sac region (P<0.01) and rising mRNA levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β (P<0.01). Compared to that in the model group, the number of neutrophils was significantly reduced in BSTDP groups with medium and high doses, as well as the dexamethasone acetate group (P<0.05, P<0.01). There was no statistically significant difference in the low dose group. The mRNA expression levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β were significantly down-regulated (P<0.05, P<0.01). ConclusionThis paper identifies the material basis of the efficacy of BSTDP, demonstrating that the formula can exert an anti-inflammatory effect through the TLR4/MyD88/NF-κB signaling pathway. The results provide scientific experimental evidence for its further clinical application.
4.Comparison of the efficacy and safety of vedolizumab versus infliximab in Bio-naive patients with ulcerative colitis
Duidui YAO ; Feixue LI ; Jiaqi WU ; Xiaobing LIU ; Hongping WEN
China Pharmacy 2026;37(10):1307-1312
OBJECTIVE To compare the efficacy and safety of vedolizumab (VDZ) versus infliximab (IFX) in biologic-naive(Bio-naive) patients with moderate-to-severe active ulcerative colitis (UC), and to analyze the factors influencing efficacy. METHODS Clinical data were retrospectively collected from Bio-naive patients with moderate-to-severe active UC who received treatment in the Department of Gastroenterology at Shanxi Provincial People’s Hospital from June 2023 to June 2024. Based on the type of biologic agent administered, the patients were divided into the IFX group (41 cases) and the VDZ group (30 cases). Patients in the two groups received IFX (5 mg/kg) or VDZ (300 mg) for induction and maintenance of remission therapy. The two groups were compared regarding modified Mayo score, serological indicators (hemoglobin, albumin, platelet count, erythrocyte sedimentation rate, C-reactive protein), combined medication, efficacy-related indexes (clinical response rate/remission rate, and endoscopic response rate/remission rate), and the occurrence of adverse drug reactions (ADR). Based on Logistic regression model, univariate and multivariate analyses were conducted to identify potential factors influencing clinical remission at week 14 and endoscopic remission at week 38. RESULTS There were no statistically significant differences in clinical response rate/remission rate, or endoscopic response rate/remission rate between the two groups at weeks 14 and 38 ( P >0.05). However, at week 14 of treatment, the proportion of patients using concomitant corticosteroids in VDZ group was 26.67%, significantly higher than the 7.50% in IFX group ( P <0.05). There was no statistical significance in the overall incidence of ADR between the two groups ( P >0.05); all ADRs in the IFX group were grade 3 and led to treatment discontinuation (6 cases), whereas ADR in the VDZ group was grade 2 and did not interrupt therapy (1 case). Univariate and multivariate regression analyses revealed that disease type (relapsing) was significantly associated with clinical remission at week 14 of treatment, and a history of smoking was significantly associated with endoscopic remission at week 38 of treatment (the odds ratios were 0.08 for both, with 95% confidence intervals of 0.01-0.77 and 0.01-0.91 respectively, P <0.05). CONCLUSIONS For Bio-naive patients with moderate-to-severe active UC, VDZ and IFX demonstrate comparable efficacy in inducing and maintaining clinical remission and promoting mucosal healing, as well as overall safety. Although IFX can achieve faster control of inflammation in the early stage of the disease, it causes more severe ADR. Disease type (relapsing) and smoking history are identified as independent negative predictors for short-term clinical remission and long-term endoscopic remission, respectively.
5.Mechanism of Yiqi Huoxue Therapy Regulating IL-33/ST2/IL-1RAP to Improve Nasal Mucosal Tissue Remodeling and Intervene in Allergic Rhinitis
Huan WANG ; Hongping LUO ; Meiya WANG ; Yuyin LIU ; Chenlin WANG ; Chao LIAO ; Fangqi LIANG ; Peizheng XIONG ; Li TIAN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(14):298-307
ObjectiveTo explore the mechanism by which Qidan Yifei Tongqiao granules (QDYF) alleviate nasal mucosal remodeling in allergic rhinitis (AR) via the interleukin-33 (IL-33)/growth stimulation expressed gene 2 (ST2)/interleukin-1 receptor accessory protein (IL-1RAP) signaling pathway from the perspective of Qi-replenishing and blood-activating therapy. MethodsFirst, according to the previous network pharmacology results, this study predicted the potential mechanisms of QDYF in treating AR by screening key pathways, components, and targets. Molecular docking was performed via AutoDock and PyMOL 2.5.5. Subsequently, a rat model of ovalbumin (OVA)-induced AR was used for validation through in vivo experiments. Forty-eight rats were assigned into 6 groups: Control, model, low-dose QDYF (QDYF-L, 4.04 g·kg-1), medium-dose QDYF (QDYF-M, 8.08 g·kg-1), high-dose QDYF (QDYF-H, 16.16 g·kg-1), and loratadine (0.9 mg·kg-1). After 14 days of intervention, behavioral scores of the rats were observed. The morphological changes of nasal mucosa tissue were observed by hematoxylin-eosin (HE) staining. Masson staining was used to observe collagen fiber deposition in the nasal mucosal tissue and to calculate the collagen volume fraction (CVF). The expression of E-cadherin (E-cad) in the nasal mucosa tissue was detected by immunofluorescence. The serum levels of helper T cell 2 (Th2) cytokines interleukin-4 (IL-4), interleukin-5 (IL-5), and interleukin-13 (IL-13) as well as helper T cell 1 (Th1) cytokines interleukin-2 (IL-2) and interferon-γ (INF-γ) were quantified by enzyme-linked immunosorbent assay (ELISA). The protein levels of transforming growth factor-beta 1 (TGF-β1), IL-33, ST2, and IL-1RAP in the nasal mucosa tissue were determined by Western blot. ResultsIL-33, ST2, and IL-1RAP had strong binding ability with the main active ingredients—wogonin, 7-methoxy-2-methylisoflavone, formononetin, naringenin, stigmasterol, and beta-sitosterol of QDYF, with the binding energy < -4.25 kcal⋅mol-1(1 cal≈4.184 J). The results of in vivo experiments showed that compared with the control group, the model group exhibited increased behavioral scores (P<0.05), aggravated pathological damage of nasal mucosa, increased collagen fiber deposition and CVF (P<0.05), elevated serum levels of IL-4, IL-5, and IL-13, up-regulated protein levels of TGF-β1, IL-33, ST2, and IL-1RAP in the nasal mucosa (P<0.05), down-regulated expression of E-cad, and declined serum levels of IL-2, IFN-γ, and IFN-γ/IL-4 ratio (P<0.05). Compared with the model group, the QDYF groups and loratadine group showed reduced behavioral scores (P<0.05), alleviated pathological damage of nasal mucosa, reduced collagen fiber deposition and CVF (P<0.05), and up-regulated E-cad expression (P<0.05). Compared with the model group, the QDYF-H group and the loratadine group showed raised levels of INF-γ and IFN-γ/IL-4 ratio (P<0.05), declined serum levels of IL-4, IL-5, and IL-13, and down-regulated protein levels of TGF-β1, IL-33, ST2, and IL-1RAP in the nasal mucosa (P<0.05). In addition, the QDYF-H group exhibited an elevated serum IL-2 level (P<0.05). The QDYF-M group showed down-regulated protein levels of TGF-β1, IL-33 and IL-1RAP in the nasal mucosa (P<0.05). The QDYF-L group demonstrated a down-regulated protein level of ST2 in the nasal mucosa (P<0.05). ConclusionQDYF may regulate the Th1/Th2 balance through the IL-33/ST2/IL-1RAP signaling pathway, thereby ameliorating nasal mucosal tissue remodeling and alleviating AR.
6.Practice in Validity Period Management of Disinfectants, Feed, and Bedding in Laboratory Animal Facilities under Good Laboratory Practice Management System
Wenjing MA ; Yanping LIU ; Yifan LI ; Huan GUO ; Lihui XIE ; Longji DU ; Jiali MA ; Hongping WANG ; Jiamin LI
Laboratory Animal and Comparative Medicine 2026;46(4):593-603
ObjectiveTo meet the requirements of Good Laboratory Practice (GLP), Sichuan Institute for Drug Control (Sichuan Testing Center of Medical Devices, Sichuan Institute of Musk Deer Breeding) Safety Evaluation Center (hereinafter referred to as the center) conducts a targeted validation study to address the lack of supporting data for the specified validity periods of disinfectants, feed, and bedding during their use in laboratory animal facilities. The study summarizes practical experience in material management and provides a scientific basis for the standardized management of materials in the facility. MethodsUnder the routine operating conditions of the laboratory animal facility at the center, the disinfection efficacy of four commonly used disinfectants was confirmed using the quantitative suspension kill test, with the disinfectants tested on day 0, day 7, and at 1, 2, and 3 months after preparation and after opening; for laboratory animal feed, nutritional components, chemical contaminants, and microbial indicators were tested 7 days after opening; microbial indicators of laboratory animal corncob bedding were tested after storage for 7 days following opening and sterilization. ResultsUnder the GLP management system of our center, the disinfection efficacy log reduction values of prepared 0.04% sodium hypochlorite solution, 0.1% didecyldimethylammonium bromide solution, and 0.2% benzalkonium bromide solution were all ≥5 on days 0 and 7. The log reduction values of opened 75% ethanol were ≥5 on days 0 and 7 and at 1, 2, and 3 months after opening. All disinfectants were therefore qualified and effective. Compared with the factory inspection data, the nutritional components, chemical contaminants, and microbial indicators of SPF-grade rat and mouse maintenance feed, SPF-grade guinea pig growth and reproduction feed, conventional-grade guinea pig growth and reproduction feed, rabbit maintenance feed, and dog maintenance feed showed a slight overall downward trend but no significant differences 7 days after opening. The microbial indicators of specialized corncob bedding for SPF-grade laboratory animals stored for 7 days after opening and conventional-grade corncob bedding stored for 7 days after sterilization showed no significant fluctuations. All indicators still met the relevant requirements of GB/T 14924.2—2001 Laboratory Animals—Hygienic Standard for Formula Feeds and GB 14924.3—2010 Laboratory Animals—Nutrients for Formula Feeds. ConclusionBased on practical experience in managing the center's GLP laboratory animal facility and validation of core quality indicators, the specified validity periods of disinfectants, feed, and bedding meet the quality requirements, providing a practical reference for the standardized management of laboratory animal facilities.
7.Analysis of risk factors for post-prematurity respiratory disease in very preterm infants
You YOU ; Jingwen LYU ; Lin ZHOU ; Liping WANG ; Jufeng ZHANG ; Li WANG ; Yongjun ZHANG ; Hongping XIA
Chinese Journal of Pediatrics 2025;63(1):50-54
Objective:To investigate the risk factors associated with post-prematurity respiratory disease (PPRD) in very preterm infants.Methods:A prospective cohort study was conducted, enrolling 369 very preterm infants who were admitted to the neonatal intensive care unit of Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, within one week of birth from January 2019 to June 2023. Data on maternal and infant clinical characteristics, neonatal morbidities, and treatments during hospitalization were collected. The very preterm infants were divided into 2 groups based on whether they developed PPRD. Continuous variables were compared using Mann-Whitney U test, while categorical variables were compared using χ2 tests or continuity correction χ2 test. Multivariate Logistic regression analysis was used to identify the independent risk factors for PPRD in very preterm infants. Results:Among the 369 very preterm infants, 217 cases(58.8%) were male, with a gestational age of 30 (28, 31) weeks at birth and a birth weight of 1 320 (1 085, 1 590) g. Of these, 116 cases (31.4%) developed PPRD, while 253 cases (68.6%) did not. The very preterm infants in the PPRD group had a lower gestational age and lower birth weight (both, P<0.001). The PPRD group also had a higher proportion of males, lower Apgar scores at the 1 th minute after birth and the 5 th minutes after birth, a higher rate of born via cesarean delivery, and a higher incidence of bronchopulmonary dysplasia, more pulmonary surfactant treatment, longer durations of mechanical ventilation, longer total oxygen therapy, and lower Z-score for weight at discharge (all P<0.05). Multivariate Logistic regression analysis showed that gestational age ( OR=0.85, 95% CI 0.73-0.99, P=0.037), born via cesarean delivery ( OR=2.23, 95% CI 1.21-4.10, P=0.010), a duration of mechanical ventilation ≥7 days ( OR=2.51, 95% CI 1.43-4.39, P=0.001), and a Z-score for weight at discharge ( OR=0.82, 95% CI 0.67-0.99, P=0.040) were all independent risk factors for PPRD in very preterm infants. Conclusion:Very preterm infants with a small gestational age, born via cesarean section, mechanical ventilation ≥7 days, and a low Z-score for weight at discharge should be closely monitored for PPRD, and provided with standardized respiratory management after discharge.
8.Identification of Alumen and Ammonium alum Based on XRD, FTIR, TG-DTA Combined with Chemometrics
Bin WANG ; Jingwei ZHOU ; Huangsheng ZHANG ; Jian FENG ; Hanxi LI ; Guorong MEI ; Jiaquan JIANG ; Hongping CHEN ; Fu WANG ; Yuan HU ; Youping LIU ; Shilin CHEN ; Lin CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):178-186
ObjectiveTo establish the multi-technique characteristic profiles of Alumen by X-ray diffraction(XRD), Fourier-transform infrared spectroscopy(FTIR) and thermogravimetric-differential thermal analysis(TG-DTA), and to explore the spectral characteristics for rapid identification of Alumen and its potential adulterant, Ammonium alum. MethodsA total of 27 batches of Alumen samples from 8 production regions were collected for preliminary identification based on visual characteristics. The PDF standard cards of XRD were used to differentiate Alumen from A. alum, and the XRD characteristic profiles of Alumen were established, and then the common peaks were screened. Based on hierarchical clustering analysis(HCA) and orthogonal partial least squares-discriminant analysis(OPLS-DA), the characteristic information that could be used for identification of Alumen was selected with variable importance in the projection(VIP) value>1. FTIR characteristic profiles of Alumen were established, and key wavenumbers for identification were screened by HCA and OPLS-DA with VIP value>1. Meanwhile, the thermogravimetric differences between Alumen and A. alum were analyzed by TG-DTA, and the thermogravimetric traits that could be used for identification were screened. ResultsAlumen and A. alum could not be effectively distinguished by traits alone. However, by comparing the PDF standard cards of XRD, 15 batches of Alumen and 12 batches of A. alum could be distinguished. In the XRD profiles, 10 characteristic peaks were confirmed, corresponding to diffraction angles of 14.560°, 24.316°, 12.620°, 32.122°, 17.898°, 34.642°, 27.496°, 46.048°, 40.697° and 21.973°. In the FTIR profiles, 4 wavenumber ranges(399.193-403.050, 1 186.010-1 471.420, 1 801.190-2 620.790, 3 612.020-3 997.710 cm-1) and 12 characteristic wavenumbers(1 428.994, 1 430.922, 1 432.851, 1 434.779, 1 436.708, 1 438.636, 1 440.565, 1 442.493, 1 444.422, 1 446.350, 1 448.279, 1 450.207 cm-1) were identified. In the TG-DTA profiles, there were characteristic decomposition peaks of ammonium ion and mass reduction features near 555.34 ℃ for A. alum. These characteristics could serve as important criteria for distinguishing the authenticity of Alumen. ConclusionXRD, FTIR and TG-DTA can be used to rapidly detect Alumen and A. alum, and combined with the discriminant features selected through chemometrics, the rapid and accurate identification of Alumen and A. alum can be achieved. The research findings provide new approaches for the rapid identification of Alumen.
9.Identification of Alumen and Ammonium alum Based on XRD, FTIR, TG-DTA Combined with Chemometrics
Bin WANG ; Jingwei ZHOU ; Huangsheng ZHANG ; Jian FENG ; Hanxi LI ; Guorong MEI ; Jiaquan JIANG ; Hongping CHEN ; Fu WANG ; Yuan HU ; Youping LIU ; Shilin CHEN ; Lin CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(13):178-186
ObjectiveTo establish the multi-technique characteristic profiles of Alumen by X-ray diffraction(XRD), Fourier-transform infrared spectroscopy(FTIR) and thermogravimetric-differential thermal analysis(TG-DTA), and to explore the spectral characteristics for rapid identification of Alumen and its potential adulterant, Ammonium alum. MethodsA total of 27 batches of Alumen samples from 8 production regions were collected for preliminary identification based on visual characteristics. The PDF standard cards of XRD were used to differentiate Alumen from A. alum, and the XRD characteristic profiles of Alumen were established, and then the common peaks were screened. Based on hierarchical clustering analysis(HCA) and orthogonal partial least squares-discriminant analysis(OPLS-DA), the characteristic information that could be used for identification of Alumen was selected with variable importance in the projection(VIP) value>1. FTIR characteristic profiles of Alumen were established, and key wavenumbers for identification were screened by HCA and OPLS-DA with VIP value>1. Meanwhile, the thermogravimetric differences between Alumen and A. alum were analyzed by TG-DTA, and the thermogravimetric traits that could be used for identification were screened. ResultsAlumen and A. alum could not be effectively distinguished by traits alone. However, by comparing the PDF standard cards of XRD, 15 batches of Alumen and 12 batches of A. alum could be distinguished. In the XRD profiles, 10 characteristic peaks were confirmed, corresponding to diffraction angles of 14.560°, 24.316°, 12.620°, 32.122°, 17.898°, 34.642°, 27.496°, 46.048°, 40.697° and 21.973°. In the FTIR profiles, 4 wavenumber ranges(399.193-403.050, 1 186.010-1 471.420, 1 801.190-2 620.790, 3 612.020-3 997.710 cm-1) and 12 characteristic wavenumbers(1 428.994, 1 430.922, 1 432.851, 1 434.779, 1 436.708, 1 438.636, 1 440.565, 1 442.493, 1 444.422, 1 446.350, 1 448.279, 1 450.207 cm-1) were identified. In the TG-DTA profiles, there were characteristic decomposition peaks of ammonium ion and mass reduction features near 555.34 ℃ for A. alum. These characteristics could serve as important criteria for distinguishing the authenticity of Alumen. ConclusionXRD, FTIR and TG-DTA can be used to rapidly detect Alumen and A. alum, and combined with the discriminant features selected through chemometrics, the rapid and accurate identification of Alumen and A. alum can be achieved. The research findings provide new approaches for the rapid identification of Alumen.
10.Ethical considerations on the be-welling of offspring born from assisted reproductive technology
Hongping WU ; Caihong MA ; Rong LI ; Jie QIAO ; Ping LIU
Chinese Medical Ethics 2025;38(5):663-667
In recent years, the number of special clinical cases related to assisted reproductive technology (ART) for pregnancy has been on the rise annually. For example, gamete donation, assisted reproduction for couples of advanced maternal ages, and the ownership and disposition of embryos when one or both partners pass away, all involve the health of offspring and conflicts of interest in the implementation of ART. Although China’s ethical principles for ART include the protection of the offspring, the detailed rules are vague and urgently need to be supplemented and improved. In addition, the clinical application of ART lacks legislative collaborative governance. The corresponding administrative departments, practitioners, and infertile couples should work together. Starting from the perspective of focusing on the well-being of offspring born from the clinical application of ART, while conducting clinical research to address technical challenges, efforts should be made to overcome ethical dilemmas in the application of technology, comprehensively consider the well-being of offspring born from assisted reproductive treatments and help them seek the best care to promote their healthy growth.

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