1.Growth and Development of Atractylodes chinensis and Microecological Response of Cultivated Soil Mediated by Two Microbial Fertilizers
Xuewei LIU ; Chunping XIAO ; Lili WENG ; Zhaoyang LI ; Xinxing HU ; Bo LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(18):157-165
ObjectiveThe effects of two microbial fertilizers (Bacillus subtilis fertilizer and Trichoderma harzianum-Purpureocillium lilacinum compound fertilizer) on the growth and development, the accumulation of active ingredients, and the microbial community diversity of rhizosphere soil of Atractylodes chinensis were investigated. MethodsA field experiment was carried out with two-year-old Atractylodes chinensis as the test material. Plant samples were collected during the wilt stage (September 26, 2023) to determine the general agronomic traits of Atractylodes chinensis. High-performance liquid chromatography (HPLC) was utilized to evaluate the effects of microbial fertilizers on the synthesis and accumulation of four active ingredients (atractylodin, atractylon, β-eudesmol, and atractylenolide Ⅰ) in Atractylodes chinensi. PacBio Sequel sequencing technology was used to explore the differences in bacterial community structures and diversity in the rhizosphere soil of Atractylodes chinensis treated with different microbial fertilizers. ResultsThe two microbial fertilizers had significant growth-promoting effects on Atractylodes chinensis. Compared with those of the CK group, the stem diameter, stem and leaf dry and fresh weight, and rhizome dry and fresh weight of Atractylodes chinensis significantly increased by 0.47-1.07 times (P<0.05) after the application of the Bacillus subtilis fertilizer (16 kg/667 m2), and those significantly increased by 0.62-0.96 times (P<0.05) after the application of the Trichoderma harzianum-Purpureocillium lilacinum compound fertilizer (1.5 kg/667 m2). The effect on plant height was not significant. The application of two microbial fertilizers was beneficial to the accumulation of atractylodin, atractylon, β-eudesmol, and atractylenolide Ⅰ (P<0.01), and the effect of the Bacillus subtilis fertilizer on the accumulation of active ingredients of Atractylodes chinensis was better than that of the Trichoderma harzianum-Purpureocillium lilacinum compound fertilizer. The results of high-throughput sequencing showed that compared with the CK group, the Bacillus subtilis fertilizer (8 kg/667 m2) could significantly increase the diversity of rhizosphere bacterial species by regulating the Simpson index and Shannon index (P<0.05), and the Trichoderma harzianum-Purpureocillium lilacinum compound fertilizer significantly reduced the bacterial diversity (P<0.05). The relative abundance of dominant bacteria was compared at the phylum and genus levels. The relative abundance of Proteobacteria (45.73%) and Burkholderia_Caballeronia_Paraburkholderia (9.98%) significantly increased after the application of the Bacillus subtilis fertilizer (P<0.01), and the relative abundance of Acidobacteriota (20.53%) and Sphingomonas (3.63%) increased significantly (P<0.01) after the application of the Trichoderma harzianum-Purpureocillium lilacinum compound fertilizer. The relative abundance of beneficial bacteria in the Bacillus subtilis fertilizer was slightly higher than that in the Trichoderma harzianum-Purpureocillium lilacinum compound fertilizer. Pearson correlation analysis showed that Burkholderia_Caballeronia_Paraburkholderia and Sphingomonas were positively correlated with the content of atractylodin, atractylon, β-eudesmol, and atractylenolide Ⅰ (P<0.05). ConclusionThe application of the Bacillus subtilis fertilizer and Trichoderma harzianum-Purpureocillium lilacinum compound fertilizer can increase the yield of medicinal materials and promote the synthesis and accumulation of active ingredients by regulating the rhizosphere microecological diversity of Atractylodes chinensis, and the application effect of the Bacillus subtilis fertilizer is better than that of the Trichoderma harzianum-Purpureocillium lilacinum compound fertilizer.
2.A Mouse Model and Mechanism Study of Premature Ovarian Insufficiency Induced by Different Concentrations of Cyclophosphamide
Leilei GONG ; Xiaoxia WANG ; Xuewei FENG ; Xinlei LI ; Han ZHAO ; Xueyan ZHANG ; Xin FENG
Laboratory Animal and Comparative Medicine 2025;45(4):403-410
ObjectiveTo observe and compare the effects of different concentrations of cyclophosphamide (CTX) in inducing premature ovarian insufficiency (POI) model in mice and investigate the mechanism of injury. MethodsThirty-two 6~8-week-old female C57BL/6J mice were randomly divided into four groups (n=8 per group) using a weight-based block randomization method. The POI model was established via a single intraperitoneal injection of 75 mg/kg cyclophosphamide (CTX), 120 mg/kg CTX, 120 mg/kg CTX + 12 mg/kg Busulfan, or an equivalent volume of normal saline (control). Ovarian coefficients, serum estradiol (E2) and follicle-stimulating hormone (FSH) levels were measured. Western blotting was performed to assess changes in ovarian expression levels of NAD-dependent deacetylase sirtuin-5 (SIRT5) and forkhead box O3a (FOXO3a) under different modeling conditions. After determining the optimal CTX concentration for modeling, an additional forty 6~8-week-old femal C57BL/6J mice were randomly divided into five groups (n=8 per group) using a weight-based block randomization method: saline control, 120 mg/kg CTX sampling at 1, 2, 7, or 14 days after modeling. Western blotting was used to evaluate temporal changes of ovarian SIRT5 and FOXO3a protein expression. ResultsCompared with the saline control, all concentrations of CTX (75 mg/kg CTX, 120 mg/kg CTX) and 120 mg/kg CTX + 12 mg/kg Busulfan induced POI injury in mice. The 120 mg/kg CTX group exhibited smaller changes in ovarian coefficients (P<0.001) and E2 levels (P<0.05), whereas the 120 mg/kg CTX + 12 mg/kg Busulfan group showed rough and reduced luster fur, sluggish response and was in the worst state. Compared with the saline control group, FOXO3a expression was significantly down-regulated (P<0.05), while SIRT5 remained unchanged in the 75 mg/kg CTX group (P>0.05). In contrast, both SIRT5 (P<0.05) and FOXO3a (P<0.05) were significantly down-regulated in the 120 mg/kg CTX group. Further analysis revealed that on day 2 and 7 after 120 mg/kg CTX modeling, the expressions of SIRT5 (P<0.01) and FOXO3a (P<0.001) were significantly down-regulated, with the largest decrease observed on day 7 (SIRT5, P<0.000 1; FOXO3a, P<0.000 1). ConclusionOvarian injury in the POI model induced by 120 mg/kg CTX is milder than that in the POI model induced by 75 mg/kg CTX. Moreover, the expression changes of SIRT5 and FOXO3a are most significant on day 7 after modeling induced by 120 mg/kg CTX, which may be related to the inhibition of the SIRT5-FOXO3a signaling pathway.
3.Historical Evolution and Modern Clinical Application of Huoxiang Zhengqisan
Weilu NIU ; Mengjie YANG ; Chengqi LYU ; Cuicui SHEN ; Congcong LI ; Huangchao JIA ; Liyun WANG ; Xuewei LIU ; Mingsan MIAO ; Xiaomeng WANG ; Yawei YAN ; Chunyong LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):156-167
In this study, bibliometric methods were used to systematically investigate the name and origin, the evolution of prescription composition, dose evolution, origin and processing method, decoction method, ancient application, modified application, modern application and other information of Huoxiang Zhengqisan. After research, Huoxiang Zhengqisan, also known as Huoxiang Zhengqitang, was first recorded in Taiping Huimin Hejijufang. The original formula is composed of 41.3 g of Arecae Pericarpium, 41.3 g of Angelicae Dahuricae Radix, 41.3 g of Perilla frutescens(actually Perillae Folium), 41.3 g of Poria, 82.6 g of Pinelliae Rhizoma, 82.6 g of Atractylodis Macrocephalae Rhizoma, 82.6 g of Citri Reticulatae Pericarpium(actually Citri Exocarpium Rubbum), 82.6 g of Magnoliae Officinalis Cortex, 82.6 g of Platycodonis Radix, 123.9 g of Pogostemonis Herba, and 103.25 g of Glycyrrhizae Radix et Rhizoma. In this formula, Magnoliae Officinalis Cortex is processed according to the specifications for ginger-processed products, Glycyrrhizae Radix et Rhizoma is processed according to the specifications for stir-fried products, and other herbs are used in their raw products. The botanical sources of the herbs are consistent with the 2020 edition of Pharmacopoeia of the People's Republic of China. The above herbs are ground into a fine powder with a particle size passing through a No. 5 sieve. For each dose, take 8.26 g of the powdered formula, add 300 mL of water, along with 3 g of Zingiberis Rhizoma Recens and 3 g of Jujubae Fructus, and decoct until reduced to 140 mL. The decoction should be administered hot, with three times daily. To induce sweating, the patient should be kept warm under a quilt, and an additional dose should be prepared and taken if needed. This formula is traditionally used to relieve the exterior and resolve dampness, regulate Qi and harmonize the middle, which is mainly used to treat a series of diseases of digestive and respiratory systems. However, potential adverse reactions, including allergies, purpura and disulfiram-like reactions, should be considered during clinical use. Huoxiang Zhengqisan features a rational composition, extensive clinical application, and strong potential for further research and development.
4.Historical Evolution and Modern Clinical Application of Huoxiang Zhengqisan
Weilu NIU ; Mengjie YANG ; Chengqi LYU ; Cuicui SHEN ; Congcong LI ; Huangchao JIA ; Liyun WANG ; Xuewei LIU ; Mingsan MIAO ; Xiaomeng WANG ; Yawei YAN ; Chunyong LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):156-167
In this study, bibliometric methods were used to systematically investigate the name and origin, the evolution of prescription composition, dose evolution, origin and processing method, decoction method, ancient application, modified application, modern application and other information of Huoxiang Zhengqisan. After research, Huoxiang Zhengqisan, also known as Huoxiang Zhengqitang, was first recorded in Taiping Huimin Hejijufang. The original formula is composed of 41.3 g of Arecae Pericarpium, 41.3 g of Angelicae Dahuricae Radix, 41.3 g of Perilla frutescens(actually Perillae Folium), 41.3 g of Poria, 82.6 g of Pinelliae Rhizoma, 82.6 g of Atractylodis Macrocephalae Rhizoma, 82.6 g of Citri Reticulatae Pericarpium(actually Citri Exocarpium Rubbum), 82.6 g of Magnoliae Officinalis Cortex, 82.6 g of Platycodonis Radix, 123.9 g of Pogostemonis Herba, and 103.25 g of Glycyrrhizae Radix et Rhizoma. In this formula, Magnoliae Officinalis Cortex is processed according to the specifications for ginger-processed products, Glycyrrhizae Radix et Rhizoma is processed according to the specifications for stir-fried products, and other herbs are used in their raw products. The botanical sources of the herbs are consistent with the 2020 edition of Pharmacopoeia of the People's Republic of China. The above herbs are ground into a fine powder with a particle size passing through a No. 5 sieve. For each dose, take 8.26 g of the powdered formula, add 300 mL of water, along with 3 g of Zingiberis Rhizoma Recens and 3 g of Jujubae Fructus, and decoct until reduced to 140 mL. The decoction should be administered hot, with three times daily. To induce sweating, the patient should be kept warm under a quilt, and an additional dose should be prepared and taken if needed. This formula is traditionally used to relieve the exterior and resolve dampness, regulate Qi and harmonize the middle, which is mainly used to treat a series of diseases of digestive and respiratory systems. However, potential adverse reactions, including allergies, purpura and disulfiram-like reactions, should be considered during clinical use. Huoxiang Zhengqisan features a rational composition, extensive clinical application, and strong potential for further research and development.
5.Development and application of a drug price adjustment system in medical institutions
Liping YANG ; Zhigang ZHAO ; Li YANG ; Xuewei HAN ; Jing LIU
China Pharmacy 2025;36(19):2433-2436
OBJECTIVE To resolve account discrepancies caused by drug price adjustment in medical institution pharmacy management and reduce the time required for price adjustment. METHODS The problems existing in the drug price adjustment models of domestic medical institutions were investigated, and a drug price adjustment system was developed based on price- invoice synchronization mechanism. The system optimized the drug price adjustment process through batch number matching and real-time monitoring functionalities. The account consistency rate and price adjustment time were evaluated before and after system implementation. RESULTS A drug price adjustment system was successfully developed, featuring an innovative “synchronized entry and exit” mode, batch number matching, real-time monitoring, intelligent automation, and electronic traceability. After implementation, the account consistency rate for Western medicines increased from 86.89% (86.66%, 89.63%) to 100% (100%, 100%) (P=0.005), while Chinese patent medicines and herbal medicines maintained a 100% (100%, 100%) account consistency rate. Concurrently, the drug price adjustment time significantly decreased from 6.00 (5.00, 7.00)d to 2.50 (1.50, 3.00) d (P< 0.001). CONCLUSIONS The developed system significantly improves account consistency, shortens price adjustment time, and demonstrates notable innovation and practical utility.
6.Textual Research on Lianggesan from Ancient Literature and Its Modern Clinical Application
Weilu NIU ; Chengqi LYU ; Mengjie YANG ; Shunxi WANG ; Jingkang QIAO ; Huangchao JIA ; Liyun WANG ; Xuewei LIU ; Mingsan MIAO ; Jianwei LI ; Gang WANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(22):223-234
Lianggesan was first recorded in Taiping Huimin Heji Jufang, which was composed of Rhei Radix et Rhizoma, Natrii Sulfas, Gardeniae Fructus, Forsythiae Fructus, Scutellariae Radix, Glycyrrhizae Radix et Rhizoma(GRR), Menthae Haplocalycis Herba, Lophatheri Herba and Mel. It was clinically applied to treat fire-heat syndrome in the upper and middle Jiao, and the curative effect was positive. In this study, the bibliometric method was used to conduct a detailed textual research on the formula name, medicinal composition, dosage evolution, origin and processing, functional indications and other aspects of Lianggesan. Research revealed that Lianggesan has six other names, such as Lianqiao Yinzi, Lianqiao Jiedusan, Jufang Lianggesan, Jiegu Lianggesan, Hejian Lianggesan and Qingji Lianggesan. Based on the edition of Taiping Huimin Heji Jufang, an analysis of the evolution of its formula composition revealed that the missing Chinese medicines were predominantly bamboo leaves and honey, while the added Chinese medicines were primarily supplements introduced to address changes in disease manifestations. After textual research, the dosage for one dose of Lianggesan from Taiping Huimin Heji Jufang was as follows:826 g of Rhei Radix et Rhizoma, 826 g of Natrii Sulfas, 826 g of GRR, 413 g of Gardeniae Fructus, 413 g of Menthae Haplocalycis Herba, 413 g of Scutellariae Radix, and 1652 g of Forsythiae Fructus. Decocting method was as following:Grinding the Chinese medicines into coarse powder(2-4 mm), taking 8.16 g per dose, adding 300 mL of water, along with 2 g of Lophatheri Herba and 5 g of Mel, and decocting to 140 mL. The residue was removed and taken warmly 30 min after meals. It was recommended to take it three times daily until improvement was achieved. The origins of the 9 Chinese medicines were consistent with the 2020 edition of Pharmacopoeia of the People's Republic of China. Except for GRR, which required single frying(stir-frying), the remaining medicines were all raw products. The description of the function of this formula in ancient books was summarized as purging fire and promoting bowel movements, clearing heat from the upper body and purging the lower body, and the main syndromes included facial redness, tongue swelling, red eyes, etc. In modern applications, the formula is primarily used for respiratory and digestive system diseases, including acute lung injury, chronic obstructive pulmonary disease, herpetic angina and aphthous stomatitis, covering 142 types of diseases. In summary, this paper can provide a basis for further research and development of Lianggesan through the literature review and key information combing.
7.Analysis of Ancient Literature and Modern Clinical Application of Tuoli Xiaodusan
Shunxi WANG ; Weilu NIU ; Xuewei LIU ; Jingke GENG ; Mengyue LI
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(8):176-186
Tuoli Xiaodusan is the 65th formula in the Catalogue of Ancient Famous Classical Formulas(First Batch). In this study, the bibliometric method was used to summarize and verify the ancient books about Tuoli Xiaodusan in terms of its historical origin, composition and dosage of the formula, indications, decoction and administration method, and processing, etc. According to the research, there is no definite date of the formation of Tuoli Xiaodusan, the earliest can be traced back to Lizhai Waike Fahui in Ming dynasty, which has been widely circulated, with many versions of prescription composition, and the modern influential version is from Waike Zhengzong in Ming dynasty, which is made up of 12 Chinese herbs including Ginseng Radix et Rhizoma(3.73 g), Chuanxiong Rhizoma(3.73 g), Paeoniae Radix Alba(3.73 g), Astragali Radix(3.73 g), Angelicae Sinensis Radix(3.73 g), Atractylodis Macrocephalae Rhizoma(3.73 g), Poria(3.73 g), Lonicerae Japonicae Flos(3.73 g), Angelicae Dahuricae Radix(1.87 g), Glycyrrhizae Radix et Rhizoma(1.87 g), Gleditsiae Spina(1.87 g), Platycodonis Radix(1.87 g). The herb origins almost follow the 2020 edition of Chinese Pharmacopoeia, except that Angelica dahurica var. formosana is only recommended as the origin of Angelicae Dahuricae Radix, and Glycryyhiza uralensis is only recommended as the origin of Glycyrrhizae Radix et Rhizoma. All the herbs are recommended to be used in the raw products. As for the preparation method, it is recommended to decoct with water, add 400 mL of water, boil until 160 mL, and take 2-3 times a day. The formula has the functions of nourishing Qi and nourishing blood, detoxifying and draining pus, and was mainly used to treat ulcerative diseases with the syndrome of syndrome of healthy Qi deficiency and pathogenic factors excess in ancient times, and in modern times, it is used for a wide range of treatment, involving the skin and soft tissues, bones, digestion and many other systemic diseases, and is also mainly used for syndrome of healthy Qi deficiency and pathogenic factors excess. In this study, the ancient and modern applications of Tuoli Xiaodusan were summarized, and its key information was identified, providing a basis for its wider clinical application, in-depth research and formulation development.
8.Analysis on Application and Funding Situation of General,Young Scholar and Regional Scholar Programs from NSFC in Field of Integrated Traditional Chinese and Western Medicine in 2023
Yuan XU ; Zipeng GONG ; Juan LI ; Jinwei ZHANG ; Xuewei LIU
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(2):172-178
By combing the application and funding situation of general, young scholar and regional scholar programs from National Natural Science Foundation of China(NSFC) in field of integrated traditional Chinese and western medicine in 2023, this paper summarizes the distribution of supporting units, application and funding hotspots, and the problems of application and funding projects in this discipline, in order to provide a reference for applicants and supporting organizations to understand the hotspot dynamics and reporting requirements of the discipline. In 2023, the discipline of integrated traditional Chinese and western medicine received a total of 2 793 applications, and there were 1 254 applications for general programs, 1 278 applications for young scholar programs, and 261 applications for regional scholar programs. The amounts of project funding obtained by the three were 145, 164 and 35, respectively, and the funding rates were 11.56%, 12.83% and 13.41% in that order. From the situation of obtaining funding, the age distribution of the project leaders who obtained funding for the general, young scholar and regional scholar programs were mainly distributed in the age of 40-46, 30-34, 38-44 years, respectively. Within the supported programs, the Chinese medicine affiliations accounted for 55.52%. With respect to research subjects, the proportion of one single Chinese herbs, or monomers, or extracts accounted for 29.4%, but the proportion of Chinese herb pairs or prescriptions accounted for 47.1%. Research hotspots included ferroptosis, bile acid metabolism, macrophages, mitochondria, microglia, exosomes, intestinal flora, microecology and so on. The current research mainly focused on the common key problems of the advantageous diseases of Chinese and western integrative medicine, but still need to be improved in the basic theories of Chinese and western medicine and multidisciplinary cross-disciplinary research.
9.Preparation of heparinized acellular vascular scaffold and hemocompatibility evaluation
Xiafei LI ; Lingling ZHAO ; Feng LIANG ; Xuewei ZHANG ; Jinjin ZHANG ; Fei LIN ; Tuo YANG ; Liang ZHAO
Chinese Journal of Tissue Engineering Research 2024;28(17):2631-2636
BACKGROUND:Acellular vascular scaffolds can mimic the microstructure and function of native blood vessels,but some extracellular matrix loss occurs during their preparation,which affects their hemocompatibility.Therefore,it is necessary to modify them to improve their hemocompatibility. OBJECTIVE:To assess the hemocompatibility of acellular vascular scaffold prepared by Triton-x100/heparin sodium treatment. METHODS:The abdominal aorta was taken from SD rats and randomly divided into control and experimental groups.The control group was treated with Triton-x100 for 48 hours.The experimental group was treated with Triton-x100 for 48 hours and then treated with heparin sodium.The morphology and hydrophilicity of the two groups of acellular vascular scaffolds were detected.The hemocompatibility of the two groups of acellular vascular scaffold was evaluated by recalcification coagulation time test,platelet adhesion test,dynamic coagulation time test,hemolysis test,and complement activation test. RESULTS AND CONCLUSION:(1)Scanning electron microscopy showed that the surface of the two groups of vascular scaffolds was relatively intact,and a large number of fiber filaments appeared on the surface of the scaffolds after decellularity treatment,and the surface microstructure changed significantly.The water contact angle of the two groups of vascular scaffolds was smaller than that of natural vessels(P<0.000 1).There was no significant difference in water contact angle between the two groups(P>0.05).(2)The coagulation time of vascular scaffold was longer in the experimental group than in the control group(P<0.05).The number of platelets attached to the scaffold membrane was less in the experimental group than that in the control group(P<0.000 1).The coagulation index was greater in the experimental group than that in the control group(P<0.01),and the complement level was lower in the experimental group than that in the control group(P<0.001).The hemolysis rate of the two groups was lower than 5%of the national standard.(3)To conclude,acellular scaffold treated with Triton-x100/heparin sodium has excellent hemocompatibility.
10.Study of genetic profiles and haematological phenotypes of δ-thalassemia in Guangdong population
Xiaojun CHEN ; Fan JIANG ; Jianying ZHOU ; Jian LI ; Xuewei TANG ; Guilan CHEN ; Fatao LI ; Fang TANG ; Ren ZHANG ; Dongzhi LI
Chinese Journal of Laboratory Medicine 2024;47(1):49-56
Objective:To investigate genetic variation profiles of δ-globin (HBD gene) and hematological phenotypes in Guangdong population.Methods:Retrospective case analysis was performed in this study. Blood samples of 11 616 couples who participated in free thalassemia screening in Guangzhou from July 2020 to December 2022 were collected which underwent blood routine tests and hemoglobin (Hb) capillary electrophoresis. According to the results, 154 samples were enrolled in this study: (1)group of 35 cases with HbA 2 <2.0% but no HbF band; (2)group of 64 cases with HbA 2 < 2.0% and HbF band; (3)group of 25 cases with HbA 2 <2.0% and suspected HbA 2 variants; (4) group of 25 cases with HbA 2 ≥2.0% and <3.5% and HbF band, as well as abnormal blood routine report [mean corpuscular volume (MCV) <82 fl and/or mean corpuscular hemoglobin (MCH) <27 pg]; (5)group of 5 cases with HbA 2 ≥2.0% and <3.0% accompanied with β thalassemia gene carriers Sanger sequencing was used to detect single nucleotide variants of δ-globin. Results:(1) A total of 22 genetic variations were detected, including 6 de novo variations, and the top 3 genetic variations were respectively c.-127T>C (57.02%, 65/114), c.-80T>C (9.65%, 11/114), c.349C>T (7.89%, 9/114). (2) In group of patients with HbA 2 <2.0% but no HbF band, 22 cases (62.85%, 22/35) had HBD gene variation, including 7 cases with MCV and MCH lower than reference values, 4 cases with α thalassemia; 13 cases had no HBD gene variation, including 12 cases with lower MCV and MCH. Among 19 cases with abnormal blood routine test results, levels of HbA 2 in patients (7 cases) with HBD gene variation were lower compared with those without HBD gene variation (12 cases) ( P<0.01%). (3)In group of patients with HbA 2<2.0% with HbF band, 59 cases (92.18%, 59/64) had HBD gene variations whose mutations all occurred in promoter region, and the HbF were all lower than 5.0%; 5 cases with HbF >5.0% had no HBD gene variation. (4) In group of patients with HbA 2 <2.0% and suspected HbA 2 variants, the detection rate was 100% (25/25) and δ-globin variants <1.0%. (5) In group of patients with HbA 2 ≥2.0% and <3.5% and HbF band accompanied with abnormal blood routine results, no HBD gene variation was found. (6) In group of 5 patients with HbA 2 ≥2.0% and <3.0% with β thalassemia gene carriers, HBD gene variation were found in all cases, and the level of HbA 2 was (2.62±0.17)% and HbF was (3.62±2.22)%. Conclusions:There are various genotypes of HBD gene variation, among which HBD: c.-127T>C is the most common in Guangdong population in China. Mutations in the promoter region may cause decrease in HbA 2 and increase in HbF which is mostly less than 5% but exceeds 5.0% when combined with β thalassemia. Our study enriched the gene mutation profiles of HBD gene in Guangdong population.

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