As an innovative dosage form, traditional Chinese medicine(TCM) dry powder inhalers have emerged as a focal point in the research and development of new preparations due to its high efficiency, safety, and bioavailability. This paper systematically reviewed the relevant literature and patents associated with TCM dry powder inhalers to analyze the origins and the current research and development status. Furthermore, this paper probed into the research and development ideas of TCM dry powder inhalers regarding clinical positioning, prescription screening, and druggability. Additionally, the paper thoroughly analyzed the technical barriers in druggability studies and elaborated on corresponding research techniques and coping measures. Furthermore, it emphasized the need for improved regulations and policies governing TCM dry powder inhalers, advocated for strengthened oversight, and called for the establishment of a scientific quality evaluation system. Measures such as promoting production-education-research collaboration, enhancing personnel training, and fostering international exchanges were proposed to provide a scientific and systematic reference for the future research, development, and application of TCM dry powder inhalers, thereby facilitating the rapid modernization of TCM.
Humans ; Dry Powder Inhalers/trends* ; Drugs, Chinese Herbal/chemistry* ; Medicine, Chinese Traditional/instrumentation* ; Administration, Inhalation

Aim To identify the chemical components of Angelica sinensis(AS)and explore the mechanism of AS in activating blood circulation.Methods UP-LC-Q-TOF-MS was used to identify the chemical com-ponents of AS.The changes of syndrome and patholog-ical section of heart in rats were observed.Hemody-namics and proteomics were measured.Results A to-tal of 270 compounds were identified from AS.It showed that rats of Angelica sinensis group were greatly improved such as arched back,shrugged fur,huddled up and less mobile,purplish paws and tails,whitish ear margins and nasolabial lips,reduced drinking and feed-ing,and slow response to external stimuli;mildly disor-dered myocardial fibre arrangement,myofibre arrange-ment was tighter than that of model group,myocardial fibres were narrower and close to normal,and mild oe-dema,exudation,and inflammatory cell infiltration could be seen in the surrounding area;SAP was signif-icantly lower and LVSP was significantly higher in An-gelica sinensis group(P＜0.05).Proteomics showed that 62 differential proteins were screened in Angelica sinensis group compared to model,GO function were concentrated in the extracellular matrix,cytoskeletal proteins binding and protein hydrolysis negatively regu-lated.KEGG pathway were enriched in signalling path-ways such as complement and coagulation cascades,cellular focal adhesion,leukocyte transendothelial mi-gration and chemokine signalling pathways.Conclu-sions AS probably through the expression of proteins,which modulate the signalling pathways of the comple-ment and coagulation cascade reactions and the con-traction of vascular smooth muscle.

Objective:To investigate the MRI characteristics of ductal lesions with microcalcifications detected by mammography,and to evaluate the value of MRI in the differential diagnosis of benign and malignant ductal lesions.Methods:The clinical data of 112 patients with pathologically confirmed ductal lesions with microcalcifications detected by mammography in our hospital from January 2022 to June 2024 were retrospectively analyzed.All patients underwent mammography and MRI examinations.MRI morphological features,dynamic enhancement characteristics,diffusion-weighted imaging(DWI)findings,and apparent diffusion coefficient(ADC)values were analyzed and compared with pathological results.The diagnostic performance of various MRI features was analyzed using ROC curves.Results:Among the 112 patients,there were 47 benign lesions and 65 malignant lesions.Malignant lesions were more likely to present with irregular morphology,heterogeneous T2 signal,lobulation,and spiculation(P＜0.05),while benign lesions were more likely to present with round or oval shapes and homogeneous T2 signal(P＜0.05).Malignant lesions predominantly showed fast rise-fast washout(Washout type)enhancement curves(58.5％),while benign lesions predominantly showed persistent rise(Progressive type)enhancement curves(55.3％).The ADC values of malignant lesions(0.92±0.21× 10-3 mm2/s)were significantly lower than those of benign lesions(1.45±0.28× 10-3 mm2/s)(P＜0.001).The combined application of morphological features,dynamic enhancement curves,and ADC values had the highest diagnostic performance,with a sensitivity of 92.3％,specificity of 89.4％,and accuracy of 91.1％.Conclusion:Multi-parameter MRI can comprehensively evaluate ductal lesions with microcalcifications detected by mammography.The combined application of morphological features,dynamic enhancement curve types,and ADC values can effectively improve the accuracy of differential diagnosis between benign and malignant lesions,providing important basis for clinical treatment decisions.

Objective:To investigate the MRI characteristics of ductal lesions with microcalcifications detected by mammography,and to evaluate the value of MRI in the differential diagnosis of benign and malignant ductal lesions.Methods:The clinical data of 112 patients with pathologically confirmed ductal lesions with microcalcifications detected by mammography in our hospital from January 2022 to June 2024 were retrospectively analyzed.All patients underwent mammography and MRI examinations.MRI morphological features,dynamic enhancement characteristics,diffusion-weighted imaging(DWI)findings,and apparent diffusion coefficient(ADC)values were analyzed and compared with pathological results.The diagnostic performance of various MRI features was analyzed using ROC curves.Results:Among the 112 patients,there were 47 benign lesions and 65 malignant lesions.Malignant lesions were more likely to present with irregular morphology,heterogeneous T2 signal,lobulation,and spiculation(P＜0.05),while benign lesions were more likely to present with round or oval shapes and homogeneous T2 signal(P＜0.05).Malignant lesions predominantly showed fast rise-fast washout(Washout type)enhancement curves(58.5％),while benign lesions predominantly showed persistent rise(Progressive type)enhancement curves(55.3％).The ADC values of malignant lesions(0.92±0.21× 10-3 mm2/s)were significantly lower than those of benign lesions(1.45±0.28× 10-3 mm2/s)(P＜0.001).The combined application of morphological features,dynamic enhancement curves,and ADC values had the highest diagnostic performance,with a sensitivity of 92.3％,specificity of 89.4％,and accuracy of 91.1％.Conclusion:Multi-parameter MRI can comprehensively evaluate ductal lesions with microcalcifications detected by mammography.The combined application of morphological features,dynamic enhancement curve types,and ADC values can effectively improve the accuracy of differential diagnosis between benign and malignant lesions,providing important basis for clinical treatment decisions.

Aim To identify the chemical components of Angelica sinensis(AS)and explore the mechanism of AS in activating blood circulation.Methods UP-LC-Q-TOF-MS was used to identify the chemical com-ponents of AS.The changes of syndrome and patholog-ical section of heart in rats were observed.Hemody-namics and proteomics were measured.Results A to-tal of 270 compounds were identified from AS.It showed that rats of Angelica sinensis group were greatly improved such as arched back,shrugged fur,huddled up and less mobile,purplish paws and tails,whitish ear margins and nasolabial lips,reduced drinking and feed-ing,and slow response to external stimuli;mildly disor-dered myocardial fibre arrangement,myofibre arrange-ment was tighter than that of model group,myocardial fibres were narrower and close to normal,and mild oe-dema,exudation,and inflammatory cell infiltration could be seen in the surrounding area;SAP was signif-icantly lower and LVSP was significantly higher in An-gelica sinensis group(P＜0.05).Proteomics showed that 62 differential proteins were screened in Angelica sinensis group compared to model,GO function were concentrated in the extracellular matrix,cytoskeletal proteins binding and protein hydrolysis negatively regu-lated.KEGG pathway were enriched in signalling path-ways such as complement and coagulation cascades,cellular focal adhesion,leukocyte transendothelial mi-gration and chemokine signalling pathways.Conclu-sions AS probably through the expression of proteins,which modulate the signalling pathways of the comple-ment and coagulation cascade reactions and the con-traction of vascular smooth muscle.

italic>Platycodon grandiflorum (Jacq.) A. DC is one of the most commonly used bulk medicinal herbs. It has important value in the fields of medicine, food and cosmetics, and its market demand is increasing year by year, and it has a good development prospect. In this study, based on 403 distribution records and 8 environmental variables, we used Maxent model to predict the potential distribution of P. grandiflorum under climate change. The results showed that the model simulation effect was the best when the Maxent parameter was FC (feature combination) = LQPH (L: linear features; Q: quadratic features; P: product features; H: hinge features) and RM (regularization multiplier) = 2.1, AUC (area under curve) = 0.901, and the model prediction showed that P. grandiflorum was widely distributed in 28 provinces of China under the current climate conditions, with a suitable area of 2 337 419.98 km². Under the influence of climate change in the future, the area of suitable habitat of P. grandiflorum showed a decreasing trend, and the distribution center as a whole showed a trend of northward and eastward shift. The distribution area of P. grandiflorum in the three main producing areas is affected by climate change, and the overall trend is that the future suitable distribution area of Chifeng in Inner Mongolia increases, while the future suitable distribution area of Zibo in Shandong and Taihe, Bozhou in Anhui decreases or even disappears under the SSP5-8.5 scenario (shared socioeconomic pathways). It is suggested to maintain and protect the ecological environment and germplasm resources of the reserved area suitable for the growth of P. grandiflorum, and increase the cultivation research in the expansion area of P. grandiflorum, so as to lay a foundation for the subsequent expansion of P. grandiflorum planting and to promote the protection and sustainable development of P. grandiflorum resources.

AIM To identify the chemical components of Longmu Qingxin Mixture by UPLC-Q-TOF-MS and study its material basis for the treatment of attention deficit hyperactivity disorder.METHODS The sample was detected by mass spectrometry in positive and negative ion mode on a Waters CORTECS? UPLC? T3 chromatographic column.The data were analyzed with Peakview 1.2 software and matched with the Natural Products HR-MS/MS Spectral Library 1.0 database,and the components were identified in combination with literature reports.The material basis of Longmu Qingxin Mixture for the treatment of attention deficit hyperactivity disorder was analysed according to the identified components.RESULTS Forty chemical components were identified,including 11 flavonoids,6 monoterpene glycosides,4 triterpene saponins,3 phenolic acids,6 alkaloids etc.,which mainly derived from Radix Astragali,Radix Paeoniae Alba,Radix Scutellariae,licorice root,Ramulus Uncariae cum,etc.,baicalein,formononetin,astragaloside Ⅳ and rhynchophylline may be the material basis for the therapeutic effect of Longmu Qingxin Mixture.CONCLUSION UPLC-Q-TOF-MS can quickly identify the chemical components of Longmu Qingxin Mixture.Flavonoids,triterpene saponins and alkaloids may be the material basis for Longmu Qingxin Mixture for the treatment of attention deficit hyperactivity disorder,which can provide the basis for its material basis research,quality standard establishment and pharmacological study of the dismantled formula.

Objective To investigate the risk factors for bronchopulmonary dysplasia(BPD)in twin preterm infants with a gestational age of<34 weeks,and to provide a basis for early identification of BPD in twin preterm infants in clinical practice.Methods A retrospective analysis was performed for the twin preterm infants with a gestational age of<34 weeks who were admitted to 22 hospitals nationwide from January 2018 to December 2020.According to their conditions,they were divided into group A(both twins had BPD),group B(only one twin had BPD),and group C(neither twin had BPD).The risk factors for BPD in twin preterm infants were analyzed.Further analysis was conducted on group B to investigate the postnatal risk factors for BPD within twins.Results A total of 904 pairs of twins with a gestational age of<34 weeks were included in this study.The multivariate logistic regression analysis showed that compared with group C,birth weight discordance of>25%between the twins was an independent risk factor for BPD in one of the twins(OR=3.370,95%CI:1.500-7.568,P<0.05),and high gestational age at birth was a protective factor against BPD(P<0.05).The conditional logistic regression analysis of group B showed that small-for-gestational-age(SGA)birth was an independent risk factor for BPD in individual twins(OR=5.017,95%CI:1.040-24.190,P<0.05).Conclusions The development of BPD in twin preterm infants is associated with gestational age,birth weight discordance between the twins,and SGA birth.

Objective To observe the effects of whole-course epidural analgesia with ropivacaine injection and sufentanil injection on hemodynamics,stress response and postoperative pain in patients undergoing thoracoscopic lobectomy.Methods Patients who underwent thoracoscopic lobectomy were divided into the treatment group and the control group according to the cohort method.Both groups underwent epidural puncture and catheterization before surgery.The control group was given bolus injection of 10 mg of 0.125％ropivacaine hydrochloride injection and 0 9％NaCl injection(8 mL in total)via epidural catheter.The treatment group was given bolus injection of 10 mg of 0.125％ropivacaine hydrochloride injection and 4 μg of 0.5 μg·mL-1 sufentanil citrate injection(8 mL in total)via epidural catheter.Analgesia was maintained with the same concentration of drugs during the surgery.The epidural analgesia pump was used before closing the pleura.The analgesic formula for the control group consisted of 400 mg of 0.125％ropivacaine hydrochloride injection,and the analgesic formula for the treatment group consisted of 400 mg of 0.125％ropivacaine hydrochloride injection and 0.5 mg of 0.5 μg·mL-1 sufentanil citrate injection.Changes in hemodynamic indicators[heart rate(HR),mean arterial pressure(MAP)],serum epinephrine(E),norepinephrine(NE)and cortisol(Cor)during surgery,occurrence of postoperative acute pain,postoperative remedial analgesia,and chronic pain were compared between the two groups.Safety was evaluated.Results A total of 80 patients were enrolled in the study,with 38 in the control group and 42 in the treatment group.The heart rates(HR)of the treatment and control groups were(80.35±9.62)and(88.24±10.35)beat·min-1 at immediate tracheal intubation(T1);and their mean arterial pressures(MAP)were(95.07±8.51)and(98.46±9.05)mmHg respectively.At skin incision(T2),HR of the treatment and control groups were(75.33±9.21)and(80.65±10.63)beat·min-1,respectively;MAP were(94.33±8.43)and(99.06±6.58)mmHg,respectively.Post-operation(T4),serum levels of E in the treatment and control groups were(53.17±9.79)and(60.79±8.58)ng·L-1;NE levels were(52.33±8.22)and(59.96±8.89)ng·L-1;Cor levels were(22.75±4.63)and(28.64±5.02)mg·L-1.At 24 hours post-operation(T5),serum levels of E in the treatment and control groups were(54.27±9.15)and(62.28±8.33)ng·L-1;NE levels were(55.34±9.18)and(62.07±9.58)ng·L-1;Cor levels were(24.19±4.52)and(30.57±4.79)mg·L-1.The incidences of agitation post-operation were 7.14％(3 cases/42 cases)and 23.68％(9 cases/38 cases),and the time to patient controlled epidural analgesia(PCEA)press was(13.67±2.74)and(11.35±2.28)h,respectively.The cumulative rescue analgesic dose within 72 h post-operation were(120.73±34.36)and(156.35±36.79)mg,respectively.Statistical analysis showed significant differences between the treatment and control groups in all these indicators(all P＜0.05).The total incidences of adverse drug reactions in the treatment group and the control group were 30.95％(13 cases/42 cases)and 23.68％(9 cases/38 cases),without statistically significant difference between the groups(all P＞0.05).Conclusion Applying ropivacaine combined with sufentanil in whole-course epidural analgesia for patients undergoing thoracoscopic lobectomy is conducive to maintaining perioperative hemodynamic stability,alleviating surgical stress and postoperative pain,and reduce the incidence of postoperative agitation.

Objective To observe the effects of whole-course epidural analgesia with ropivacaine injection and sufentanil injection on hemodynamics,stress response and postoperative pain in patients undergoing thoracoscopic lobectomy.Methods Patients who underwent thoracoscopic lobectomy were divided into the treatment group and the control group according to the cohort method.Both groups underwent epidural puncture and catheterization before surgery.The control group was given bolus injection of 10 mg of 0.125％ropivacaine hydrochloride injection and 0 9％NaCl injection(8 mL in total)via epidural catheter.The treatment group was given bolus injection of 10 mg of 0.125％ropivacaine hydrochloride injection and 4 μg of 0.5 μg·mL-1 sufentanil citrate injection(8 mL in total)via epidural catheter.Analgesia was maintained with the same concentration of drugs during the surgery.The epidural analgesia pump was used before closing the pleura.The analgesic formula for the control group consisted of 400 mg of 0.125％ropivacaine hydrochloride injection,and the analgesic formula for the treatment group consisted of 400 mg of 0.125％ropivacaine hydrochloride injection and 0.5 mg of 0.5 μg·mL-1 sufentanil citrate injection.Changes in hemodynamic indicators[heart rate(HR),mean arterial pressure(MAP)],serum epinephrine(E),norepinephrine(NE)and cortisol(Cor)during surgery,occurrence of postoperative acute pain,postoperative remedial analgesia,and chronic pain were compared between the two groups.Safety was evaluated.Results A total of 80 patients were enrolled in the study,with 38 in the control group and 42 in the treatment group.The heart rates(HR)of the treatment and control groups were(80.35±9.62)and(88.24±10.35)beat·min-1 at immediate tracheal intubation(T1);and their mean arterial pressures(MAP)were(95.07±8.51)and(98.46±9.05)mmHg respectively.At skin incision(T2),HR of the treatment and control groups were(75.33±9.21)and(80.65±10.63)beat·min-1,respectively;MAP were(94.33±8.43)and(99.06±6.58)mmHg,respectively.Post-operation(T4),serum levels of E in the treatment and control groups were(53.17±9.79)and(60.79±8.58)ng·L-1;NE levels were(52.33±8.22)and(59.96±8.89)ng·L-1;Cor levels were(22.75±4.63)and(28.64±5.02)mg·L-1.At 24 hours post-operation(T5),serum levels of E in the treatment and control groups were(54.27±9.15)and(62.28±8.33)ng·L-1;NE levels were(55.34±9.18)and(62.07±9.58)ng·L-1;Cor levels were(24.19±4.52)and(30.57±4.79)mg·L-1.The incidences of agitation post-operation were 7.14％(3 cases/42 cases)and 23.68％(9 cases/38 cases),and the time to patient controlled epidural analgesia(PCEA)press was(13.67±2.74)and(11.35±2.28)h,respectively.The cumulative rescue analgesic dose within 72 h post-operation were(120.73±34.36)and(156.35±36.79)mg,respectively.Statistical analysis showed significant differences between the treatment and control groups in all these indicators(all P＜0.05).The total incidences of adverse drug reactions in the treatment group and the control group were 30.95％(13 cases/42 cases)and 23.68％(9 cases/38 cases),without statistically significant difference between the groups(all P＞0.05).Conclusion Applying ropivacaine combined with sufentanil in whole-course epidural analgesia for patients undergoing thoracoscopic lobectomy is conducive to maintaining perioperative hemodynamic stability,alleviating surgical stress and postoperative pain,and reduce the incidence of postoperative agitation.