Historical evolution and clinical application of classical prescription Yigongsan / 中国药房

Yigongsan， derived from QIAN Yi’s Key to Therapeutics of Children’s Diseases in the Song Dynasty， is a classic pediatric prescription that is included in the Catalogue of Ancient Classic Prescriptions （the Second Batch of Pediatrics） released by the National Administration of Traditional Chinese Medicine in 2022. This paper verifies and analyzes the historical origin， composition， dosage， processing， decoction method and efficacy of Yigongsan by systematically combing ancient books and modern documents. As a result， Yigongsan is composed of five herbs： Panax ginseng， Poria cocos， Atractylodes macrocephala， Citrus reticulata and Glycyrrhiza uralensis， of which P. cocos should be peeled， A. macrocephala is fried with soil， G. uralensis is roasted with honey while P. ginseng and C. reticulata are raw products. According to the dosage of ancient and modern times， each medicinal herb must be ground into fine powder， 1.6 g for each， added with 300 mL of water， 5 pieces of Zingiber officinale， and 2 Ziziphus jujuba， decocted together to 210 mL， and taken before meals. In ancient books， Yigongsan is used to treat vomiting， diarrhea， spleen and stomach deficiency， chest and abdominal distension， and lack of appetite， etc. Modern research showed that Yigongsan could also be used in the diseases of immune system， respiratory system， blood system， etc.， involving infantile anorexia， asthma， anemia， tumors and so on.

Genome-wide association analysis of resistance to frogeye leaf spot China race 7 in soybean based on high-throughput sequencing.

KEY MESSAGE: FLS is a disease that causes severe yield reduction in soybean. In this study, four genes (Glyma.16G176800, Glyma.16G177300, Glyma.16G177400 and Glyma.16G182300) were tentatively confirmed to play an important role in the resistance of soybean to FLS race 7. Frogeye leaf spot (FLS) causes severe yield loss in soybean and has been found in several countries worldwide. Therefore, it is necessary to select and utilize FLS-resistant varieties for the management of FLS. In the present study, 335 representative soybean materials were assessed for partial resistance to FLS race 7. Quantitative trait nucleotide (QTN) and FLS race 7 candidate genes were identified using genome-wide association analysis (GWAS) based on a site-specific amplified fragment sequencing (SLAF-seq) approach. A total of 23,156 single-nucleotide polymorphisms (SNPs) were used to evaluate the level of linkage disequilibrium with a minor allele frequency ≥ 5 and deletion data < 3%. These SNPs covered about 947.01 MBP, nearly 86.09% of the entire soybean genome. In addition, a compressed mixed linear model was utilized to identify association signals for partial resistance to FLS race 7. A total of 15 QTNs associated with resistance were found to be novel for FLS race 7 resistance. A total of 217 candidate genes located in the 200-kb genomic region of these peak SNPs were identified. Based on gene association analysis, qRT-PCR, haplotype analysis and virus-induced gene silencing (VIGS) systems were used to further verify candidate genes Glyma.16G176800, Glyma.16G177300, Glyma.16G177400 and Glyma.16G182300. This indicates that these four candidate genes may participate in FLS race 7 resistance responses.

Angelica decursiva exerts antihypertensive activity by inhibiting L-type calcium channel.

ETHNOPHARMACOLOGICAL RELEVANCE: Angelica decursiva is a perennial herb that belongs to the Umbelliferae family. It is traditionally used to treat fever, upper respiratory tract infections, bleeding and hypertension. However, despite its extensive pharmacological potential, literature reports on its antihypertensive pharmacological properties are scarce. AIM OF THE STUDY: In the study, crude extract from A. decursiva roots was examined for its antihypertensive activity and its molecular basis was explored. MATERIALS AND METHODS: A. decursiva roots were extracted with ethanol, and isolated with silica gel normal-phase chromatography and reverse-phase high performance liquid chromatography. L-NAME-induced hypertensive mouse model was used to detect in vivo hypertensive activity. Thoracic aorta ring contraction activity and electrophysiology recordings were employed to evaluate in vitro antihypertensive activity and revealed an antihypertensive target, which was transiently expressed in HEK293T cells. RESULTS: Angelica decursiva ethanol decoction (ADED) exhibited significant antihypertensive effects in L-NAME-induced hypertension models and phenylephrine-induced vasoconstriction. Further screening revealed that demethylsuberosin is an essential component accounting for the antihypertension effects of A. decursiva. Voltage-gated calcium channel CaV1.2 is the likely target of A. decursiva for its antihypertension effects. CONCLUSION: The study suggests that A. decursiva and demethylsuberosin may be effective antihypertensive agents in preclinical studies. It appears that A. decursiva and demethylsuberosin exert antihypertensive effects by inhibiting the CaV1.2 channel, which contributes to the vasodilatory effect. The present study provides experimental evidence that A. decursiva is an effective remedy for hypertension in folklore. Demethylsuberosin could be a lead molecule for antihypertension drug development.

Correlating nerve conduction studies with cross-sectional area measured using ultrasound in patients with neuromuscular disease / 中华神经科杂志

Objective:To determine whether there is a correlation between the cross-sectional area (CSA) and the parameters as measured on nerve conduction studies.Methods:Twenty-one patients with neuromuscular diseases in Beijing Tiantan Hospital from March 3, 2022 to May 4, 2023 underwent ultrasound measurement of the CSA of the median nerves and ulnar nerves at the wrist, elbow and the upper arm, followed by nerve conduction studies (NCS). A linear regression model was performed to compare NCS and CSA.Results:A total of 180 sets of motor nerve conduction velocity (MCV) and CSA at the different sites including 102 sets of median nerve and 78 sets of ulnar nerve, 220 sets of compound muscle action potential (CMAP) amplitude and CSA at the different sites including 104 sets of median nerve and 116 sets of ulnar nerve, 60 sets of sensory nerve conduction velocity (SCV) and CSA and sensory nerve action potential (SNAP) amplitude and CSA at the wrist including 32 sets of median nerve and 28 sets of ulnar nerve were recorded. The linear correlation between MCV and CSA was statistically significant both in median nerve ( r2=0.10,adjusted r2=0.09, P=0.001) and in ulnar nerve ( r2=0.18,adjusted r2=0.17, P<0.001).When CSA>10 mm 2, the linear correlation between CMAP amplitude and CSA was statistically significant both in median nerve ( r2=0.09,adjusted r2=0.08, P=0.024) and ulnar nerve ( r2=0.19,adjusted r2=0.17, P=0.004). The correlation between CMAP and CSA was not statistically significant when CSA≤10 mm 2. And the correlations between SCV and CSA and between SNAP and CSA were not statistically significant. Conclusions:CSA can better show the characteristics of changes in motor nerve conduction especially in motor conduction velocity. It is suggested that its application prospect in demyelinating peripheral neuropathy with motor nerve damage may be more extensive.

Modified Mohs micrographic surgery for the treatment of five cases of eccrine porocarcinoma / 中华皮肤科杂志

Objective:To investigate the efficacy of modified Mohs micrographic surgery in the treatment of eccrine porocarcinoma.Methods:Clinical data were collected from 5 patients with eccrine porocarcinoma, who treated with modified Mohs micrographic surgery in Department of Dermatology, Wuhan No.1 Hospital from 2016 to 2020, and retrospectively analyzed.Results:Among the 5 patients, 2 were males and 3 were females, their age ranged from 52 to 80 years, and the course of disease ranged from 1 to 50 years. Skin lesions were located on the scalp, face, abdomen, thighs and feet, with diameters ranging from 1 to 6 cm. Tumor excision was performed with 1-cm margins, and was deep to the superficial fascial layers. For histopathologically negative surgical margins, the defects were closed with skin flaps or grafts; for histopathologically positive margins, the excision margin continued to be widened until it was clean. The 5 patients were followed up for 1 - 5 years without recurrence, and 1 died 2 years later due to liver cancer metastasis.Conclusion:Modified Mohs micrographic surgery can ensure clean resection margins and reduce the loss of normal tissues in the treatment of eccrine porocarcinoma.

Application prospect of molecular imaging technology in Mongolian medicine treatment research / 中华核医学与分子影像杂志

Long-term clinical practice shows that Mongolian medicine not only has a unique effect on frequently-occurring and common diseases, but also has particularly remarkable effects on difficult diseases such as cardiovascular diseases, cancer, etc. Molecular imaging technology, which based on imaging technology, displays special molecules on the tissue, cell, and subcellular level. By reflecting the changes on molecular level in vivo, lesions can be located, quantitatively and qualitatively imaged and analyzed. Non-invasive imaging in vivo is the most significant feature of molecular imaging technology. In the research of Mongolian medicine treatment, molecular imaging technology can present the characteristics of the lesions before and after treatment in vivo and in real time, dynamically evaluate the effect of drug treatment, and provide new ideas for exploring the efficacy of Mongolian medicine and developing new drugs.

Research progress in emergency drug stockpile for nuclear and radiological accidents / 中华放射医学与防护杂志

In the current international situation, there is the possibility of nuclear war and nuclear terrorism. The nuclear and radiological emergency in the event of an accident should be enhanced. The World Health Organization (WHO) issued a publication on January 27, 2023, updating the list of drugs recommended for stockpiling in response to radiation and nuclear emergencies, which was the first update since 2007. The list of recommended drug stocks in the publication includes drugs to prevent or reduce the effects of radiation, as well as drugs used to treat injuries after exposure. Based on the list of drugs, this article reviews the emergency response to nuclear and radiological accidents, the general situation of emergency drug stockpiles, drug reserves in some countries, and current considerations, with a view to providing references for emergency medical rescue in nuclear and radiological accidents in China.

Associations of genetic variations in pyroptosis related genes with acute adverse events in postoperative rectal cancer patients receiving concurrent chemoradiotherapy / 中华肿瘤杂志

Objective: This study aims to investigate the associations between genetic variations of pyroptosis pathway related key genes and adverse events (AEs) of postoperative chemoradiotherapy (CRT) in patients with rectal cancer. Methods: DNA was extracted from the peripheral blood which was collected from 347 patients before CRT. Sequenom MassARRAY was used to detect the genotypes of 43 haplotype-tagging single nucleotide polymorphisms (htSNPs) in eight pyroptosis genes, including absent in melanoma 2 (AIM2), caspase-1 (CASP1), caspase-4(CASP4), caspase-5 (CASP5), caspase-11 (CASP11), gasdermin D (GSDMD), gasdermin E (GSDME) and NLR family pyrin domain containing 3 (NLRP3). The associations between 43 htSNPs and AEs were evaluated by the odd ratios (ORs) and 95% confidence intervals (CIs) by unconditional logistic regression models, adjusted for sex, age, clinical stage, tumor grade, Karnofsky performance status (KPS), surgical procedure, and tumor location. Results: Among the 347 patients with rectal cancer underwent concurrent CRT with capecitabine after surgery, a total of 101(29.1%) occurred grade ≥ 2 leukopenia. rs11226565 (OR=0.41, 95% CI: 0.21-0.79, P=0.008), rs579408(OR=1.54, 95% CI: 1.03-2.29, P=0.034) and rs543923 (OR=0.63, 95% CI: 0.41-0.98, P=0.040) were significantly associated with the occurrence of grade ≥ 2 leukopenia. One hundred and fifty-six (45.0%) had grade ≥ 2 diarrhea, two SNPs were significantly associated with the occurrence of grade ≥ diarrhea, including CASP11 rs10880868 (OR=0.55, 95% CI: 0.33-0.91, P=0.020) and GSDME rs2954558 (OR=1.52, 95% CI: 1.01-2.31, P=0.050). In addition, sixty-six cases (19.0%) developed grade ≥2 dermatitis, three SNPs that significantly associated with the risk of grade ≥2 dermatitis included GSDME rs2237314 (OR=0.36, 95% CI: 0.16-0.83, P=0.017), GSDME rs12540919 (OR=0.52, 95% CI: 0.27-0.99, P=0.045) and NLRP3 rs3806268 (OR=1.51, 95% CI: 1.03-2.22, P=0.037). There was no significant difference in the association between other genetic variations and AEs of rectal cancer patients (all P>0.05). Surgical procedure and tumor location had great impacts on the occurrence of grade ≥2 diarrhea and dermatitis (all P<0.01). Conclusion: The genetic variants of CASP4, CASP11, GSDME and NLRP3 are associated with the occurrence of AEs in patients with rectal cancer who received postoperative CRT, suggesting they may be potential genetic markers in predicting the grade of AEs to achieve individualized treatment of rectal cancer.

Longitudinal analysis of immune reconstitution and metabolic changes in women living with HIV: A real-world observational study / 中华医学杂志(英文版)

BACKGROUND@#Women comprise more than half of people living with human immunodeficiency virus/acquired immune deficiency syndrome (HIV/AIDS) worldwide and incomplete immune recovery and metabolic abnormalities affect them deeply. Studies of HIV antiretroviral therapy (ART) have a low female representation in China. We aimed to investigate immune reconstitution and metabolic changes of female HIV-positive cohort in China longitudinally.@*METHODS@#HIV-positive women who initiated ART from January 2005 to June 2021 and were followed up regularly at least once a year were included in this study. Immunological indicators (cluster of differentiation 4 [CD4] counts and CD8 counts), viral load (VL), and metabolic indicators were collected at follow-up. All data were collected from the China Disease Prevention and Control Information System (CDPCIS). VL was tested half a year, 1 year after receiving ART, and every other year subsequently according to local policy. CD4/CD8 ratio normalization was considered as the primary outcome and defined as a value ≥1. Incidence rate and probability of CD4/CD8 ratio normalization were estimated through per 100 person-years follow-up (PYFU) and Kaplan-Meier curve, respectively. Multivariate Cox regression was used to identify independent risk factors associated with CD4/CD8 ratio normalization. We further studied the rate of dyslipidemia, hyperuricemia, diabetes, liver injury, and renal injury after ART initiation with the chi-squared tests or Fisher's exact probability tests, and a generalized estimating equation model was used to analyze factors of dyslipidemia and hyperuricemia.@*RESULTS@#A total of 494 female patients with HIV/AIDS started ART within 16 years from January 2005 to June 2021, out of which 301 women were enrolled with a median duration of ART for 4.1 years (interquartile range, 2.3-7.0 years). The overall incidence rate of CD4/CD8 ratio normalization was 8.9 (95% confidence interval [CI], 7.4-10.6) per 100 PYFU, and probabilities of CD4/CD8 normalization after initiating ART at 1 year, 2 years, 5 years, and 10 years follow-up were 11.7%, 23.2%, 44.0%, and 59.0%, respectively. Independent risk factors associated with CD4/CD8 normalization were baseline CD4 cell counts <200 cells/μL, CD8 counts >1000 cells/μL, and more than 6 months from the start of combined ART (cART) to first virological suppression. Longitudinally, the rate of hypercholesterolemia (total cholesterol [TC]) and high triglyceride (TG) showed an increasing trend, while the rate of low high-density lipoprotein cholesterol (HDL) showed a decreasing trend. The rate of hyperuricemia presented a downtrend at follow-up. Although liver and renal injury and diabetes persisted during ART, the rate was not statistically significant. Older age and protease inhibitors were independent risk factors for increase of TC and TG, and ART duration was an independent factor for elevation of TC and recovery of HDL-C.@*CONCLUSIONS@#This study showed that women were more likely to normalize CD4/CD8 ratio in comparison with findings reported in the literature even though immune reconstruction was incomplete.

Historical Evolution and Clinical Application of Famous Classical Formulas Zhulingtang / 中国实验方剂学杂志

The classic formula Zhulingtang, derived from the medical work Treatise on Cold Damage (《伤寒论》) compiled by ZHANG Zhongjing, a medical sage in the Eastern Han Dynasty, has been included in the Catalogue of Ancient Classic Formulas (First Batch) published by the National Administration of Traditional Chinese Medicine in 2018. Using the method of textual research, this study systematically reviewed ancient and modern literature to conduct a historical and textual analysis of Zhulingtang, including its origin, composition, dosage, processing, decoction methods, efficacy, and applications. A total of 733 pieces of relevant information related to Zhulingtang were collected, involving 206 ancient Chinese medical texts, with 52 of them providing detailed records of the composition, dosage, processing, and efficacy of Zhulingtang. The results of the analysis showed that Zhulingtang was composed of Polyporus, Poria, Alismatis Rhizoma, Asini Corii Colla, and Talcum. Polyporus and Poria should be used without their peels, Asini Corii Colla should be stir-fried with clam powder, and Talcum should be ground into powder or soaked in water. Based on the conversion of ancient and modern dosages, Polyporus, Poria, Alismatis Rhizoma, and Talcum, 15.63 g for each one, were decocted with 800 mL of water to 400 mL. Then the drug residue was removed, and 15.63 g of Asini Corii Colla was added to the drug juice for melting by heating. The decoction should be taken warm, 140 mL each time, three times a day. Zhulingtang has the effects of promoting diuresis, nourishing yin, and clearing heat, and it is mainly used to treat water-heat combination syndrome, characterized by symptoms such as difficult urination, fever, and thirst. Modern research indicates that Zhulingtang is commonly used to treat diseases such as cirrhotic ascites, chronic glomerulonephritis, nephrotic syndrome, diarrhea, and urinary tract infections. This study provides key information about the famous formula Zhulingtang, which can serve as a reference for further development and research on its application.

Practice and reflection on continuing education and training of clinical pharmacists in the neurology department / 中国药房

OBJECTIVE To provide a reference for continuing education and training of clinical pharmacists. METHODS The revision of the syllabus and the improvement of training methods of practical skills training class for clinical pharmacists in the neurology department held by Xuanwu Hospital of Capital Medical University from 2007 to 2022 was sorted to summarize its advantages and characteristics. RESULTS Training programs were developed to benefit clinical pharmacists at different levels， and the training contents were adjusted according to the training programs and the needs of trainees. Teachers with teaching experience were selected to participate in the teaching. Theory teaching was combined with practice teaching in the teaching process， and case teaching and question-based teaching methods were adopted to benefit both senior clinical pharmacists and new clinical pharmacists. In addition， the influence of the training class was expanded through online teaching， so that doctors and pharmacists could communicate and learn together on the platform of the training class. For example， when designing the training program， we replaced one common neurological disease every two years， and carried rollover study on its new progress and new ideas； clinical pharmacist skill course was reduced， drug history writing， information retrieval and test index interpretation were compressed into clinical pharmacy skill course. CONCLUSIONS The continuing education platform is established for clinical pharmacists； new knowledge and concepts that clinical pharmacists of this specialty need to be familiar with are compiled into the teaching syllabus， and the experts who are familiar with the training of clinical pharmacists are selected to explain to the students so that the students could follow the platform to constantly update their knowledge and improve the ability of clinical pharmacists to participate in the clinic work.

Two cases of airway dysfunction related to diacetyl exposure / 中华劳动卫生职业病杂志

Occupational exposure to diacetyl can lead to bronchiolitis obliterans. In this paper, two patients with severe obstructive ventilation disorder who were exposed to diacetyl at a fragrance and flavours factory were analyzed. The clinical manifestations were cough and shortness of breath. One of them showed Mosaic shadows and uneven perfusion in both lungs on CT, while the other was normal. Field investigation found that 4 of the 8 workers in the factory were found to have obstructive ventilation disorder, and 2 had small airway dysfunction. This paper summarizes the diagnostic process of patients in order to improve the understanding of airway dysfunction caused by occupational exposure to diacetyl and promote the development of relevant standards.

Countermeasures for the construction of occupational health information standard system / 中华劳动卫生职业病杂志

As an important part of health information standard system, occupational health information standard system is the foundation and guarantee of promoting the construction of occupational health information. This article is based on the literature research about current situation of domestic and foreign health information standards and occupational health information standard system, thus take "the National Health Information Standardization System" and "the National Public Health Information Construction Standards and Norms" into account, focus on the requirements of occupational health information construction and related work. Thus, put forward suggestions on the construction of occupational health information standard system, to accelerate the occupational health information construction, data collection, transmission and application.

Anti-hyperuricemia activity and its mechanism of flavonoid extract from saffron floral bio-residues / 中国中药杂志

A hyperuricemic rat model induced by adenine and ethambutol was established to investigate the anti-hyperuricemia activity and its mechanism of the flavonoid extract from saffron floral bio-residues. Sixty-seven SD rats were randomly divided into control group, model group, positive control group, and flavonoid extract groups(with 3 doses), respectively, and each group contained 11 or 12 rats. The hyperuricemic model was established by continuous oral administration of adenine(100 mg·kg~(-1)) and ethambutol(250 mg·kg~(-1)) for 7 days. At the same time, the positive control group was given allopurinol(20 mg·kg~(-1) per day) and the flavonoid extract groups were given the flavonoid extract at doses of 340, 170 and 85 mg·kg~(-1) per day, respectively. On day 8, rat serum, liver, kidney, and intestinal tissues were collected, and the levels of uric acid in serum and tissue, the xanthine oxidase activities and antioxi-dant activities in serum and liver were evaluated, and the kidney histopathology was explored. In addition, an untargeted serum metabolomics study was performed. According to the results, the flavonoid extract effectively reduced the uric acid levels in serum, kidney and ileum and inhibited the xanthine oxidase activities and elevated the antioxidant activities of serum and liver in hyperuricemic rat. At the same time, it reduced the levels of inflammation factors in kidney and protected renal function. Moreover, 68 differential metabolites of hyperuricemic rats were screened and most of which were lipids and amino acids. The flavonoid extract significantly retrieved the levels of differential metabolites in hyperuricemic rats, such as SM(d18:1/20:0), PC[18:0/18:2(92,12Z)], palmitic acid and citrulline, possibly through the following three pathways, i.e., arginine biosynthesis, glycine, serine and threonine metabolism, and histidine metabolism. To sum up, the flavonoid extract of saffron floral bio-residues lowered the uric acid level, increased the antioxidant activity, and alleviated inflammatory symptoms of hyperuricemic rats, which may be related to its inhibition of xanthine oxidase activity and regulation of serum lipids and amino acids metabolism.

Diagnosis and Treatment of Familial Hypokalemic Periodic Paralysis with Acidosis / 中山大学学报(医学科学版)

ObjectiveTo investigate the diagnosis and treatment of familial hypokalemic periodic paralysis with acidosis. MethodsThe proband's medical history， clinical manifestations， laboratory examinations and imaging characteristics were retrospectively analyzed， and prevalence situation of family members was investigated in detail. Next generation sequencing technology was used to detect the pathogenic gene loci related to periodic paralysis， and the relevant literatures were summarized. ResultsThe proband was definitely diagnosed as familial hypokalemic periodic paralysis. There was a heterozygous mutation in the SCN4A gene of the proband， which was c.2006G>A， resulting in amino acid changes R669H.The proband's grandfather， father and uncle shared the same variation. ConclusionsFamilial hypokalemic periodic paralysis with paroxysmal acidosis is rare， which is easily misdiagnosed as renal tubular acidosis. c 2006G>A mutation in SCN4A gene is the molecular basis of the disease in this family. The clinical phenotypes of different gene mutations are different， and gene screening is helpful for diagnosis and treatment.

Construction and prospect of healthy enterprises in the new era / 中华劳动卫生职业病杂志

The construction of health enterprises practice the concept of big health. It is an important solution to protect the overall health of occupational groups in the new era, which is of great significance to promoting a healthy city and helping to build a healthy China. This paper clarifies the connotation of healthy enterprises in the new era, discusses the key points of healthy enterprise construction around the "four in one" construction content, "PDCA" construction procedures, and evaluation methods of healthy enterprises. It focuses on the progress of healthy enterprise construction, analyzes the problems faced by the construction of health enterprises in China, and puts forward suggestions to improve the construction efficiency, with a view to providing ideas for further promoting the construction of health enterprises in China.

Analysis of work stress and its influencing factors among nursing staff in Tianjin City / 中华劳动卫生职业病杂志

Objective: To explore the current situation of work stress among nursing staff in Tianjin City and analyze its influencing factors. Methods: From August to October 2020, 26002 nursing staff from tertiary hospitals, secondary public hospitals, secondary private hospitals, primary hospitals, and other medical institutions in Tianjin City were selected as objects, and their general situation and working stress situation were surveyed by the general information questionnaire and the Nurse's Work Stressor Scale. Single factor analysis and multiple linear regression analysis were used to explore the influencing factors of work stress among nursing staff. Results: The average age of 26002 nursing staff was (33.86±8.28) years old, and the average working years were (11.84±9.12) years. There were 24874 women (95.66%) and 1128 men (4.34%). The total score of work stress was (79.82±21.69), and the average score of workload and time allocation dimension was the highest (2.55±0.79). The results of multiple linear regression analysis showed that marital status (β=-0.015, P=0.014), employment form as contract system (β=0.022, P=0.001), post as clinical nursing (β=0.048, P<0.001), education level (β=0.024, P<0.001), age (β=0.050, P<0.001), working years (β=0.075, P<0.001), and professional title (β=0.036, P<0.001) were the influencing factors of work stress, which explained 22.8% of the total variation in work stress of nursing staff (F=24.25, P<0.001) . Conclusion: The work stress among nursing staff in Tianjin City is high, the corresponding departments and nursing managers should adopt scientific management methods to reduce the workload of nursing staff according to the influencing factors of work stress, so as to create a good atmosphere for further promoting the healthy development of nursing career and nursing industry in the new era.

Association Analysis between Genotype and Phenotype of α,β-Thalassaemia Carriers in Huizhou Area of Guangdong Province / 中国实验血液学杂志

OBJECTIVE@#To analyze the prevalence, genotype distribution and hematological characteristics of α,β-thalassaemia carriers in Huizhou area of Guangdong Province.@*METHODS@#10 809 carriers of simple β-thalassaemia and 1 757 carriers of α,β-thalassaemia were enrolled as our study cohort. The hematological parameters were detected by automated blood cell counters and automatic capillary electrophoresis. Suspension array technology, gap-polymerase chain reaction (gap-PCR) and PCR-reverse dot blot were used for the genotyping of thalassaemia carriers.@*RESULTS@#The prevalence of α,β-thalassaemia in Huizhou area of Guangdong Province was 1.99%. A total of 62 genotypes were detected, and the most prevalent genotype was --SEA/ αα, βCD41-42/ βN (19.29%), the next was --SEA/ αα, βIVS-II-654/ βN (16.73%). Significant differences in mean corpuscular volume (MCV) and mean corpuscular hemoglobin (MCH) were found between different genotype groups for simple β-thalassaemia and α,β-thalassaemia. Violin plots showed that carriers with co-inheritance of β-thalassaemia and mild α-thalassaemia expressed the lightest anemia, and carriers with co-inheritance of β-thalassaemia and hemoglobin H (Hb H) disease expressed the most severe anemia.@*CONCLUSION@#There is a high prevalence of α,β-thalassaemia in Huizhou area of Guangdong Province. Because of the lack of specific hematological makers for diagnosis of α,β-thalassaemia, it is necessary to distinguish it from simple β-thalassaemia by genotyping of α- and β-thalassaemia in order to correctly guide genetic counseling and prenatal disgnosis.

Prenatal diagnosis and genetic analysis of three fetuses with duodenal atresia or stenosis / 中华医学遗传学杂志

OBJECTIVE@#To explore the genetic basis for three fetuses with duodenal atresia or stenosis detected by ultrasonography.@*METHODS@#Clinical data of three fetuses identified at the Women's Hospital Affiliated to Zhejiang University School of Medicine between January 2021 and August 2022 were collected. Umbilical cord blood and amniotic fluid samples of the fetuses and peripheral blood samples of their parents were collected and subjected to G-banded chromosomal karyotyping and single nucleotide polymorphism array (SNP array) analysis.@*RESULTS@#Prenatal ultrasound of the three fetuses revealed duodenal atresia or stenosis. No karyotypic abnormality was detected, whilst SNP array has identified 1.4 ~ 1.9 Mb duplications at 17q12 in all of them, which were all predicted to be pathogenic copy number variations (CNVs).@*CONCLUSION@#The 17q12 duplications probably underlay the duodenal atresia and stenosis in these fetuses, and chromosomal CNVs should be considered in duodenal atresia and stenosis.

Preparation of vitexin albumin nanoparticles and its pharmacokinetic study / 中国中药杂志

This study aims to prepare vitexin albumin nanoparticles(VT-BSA-NPs) to alleviate the low bioavailability of vitexin(VT) in vivo due to its poor water solubility. VT micro powders were prepared by the antisolvent crystallization method, and the morphology, size, and physicochemical properties of VT micro powders were studied. The results showed that the VT micro powder had a particle size of(187.13±7.15) nm, an approximate spherical morphology, and a uniform size distribution. Compared with VT, the chemical structure of VT micro powders has not changed. VT-BSA-NPs were prepared from VT micro powders by desolvation-crosslinking curing method. The preparation process was screened by single factor test and orthogonal test, and the quality evaluation of the optimal prescription particle size, PDI, Zeta potential, EE, and morphology was performed. The results showed that the average particle size of VT-BSA-NPs was(124.33±0.47) nm; the PDI was 0.184±0.012; the Zeta potential was(-48.83±2.20) mV, and the encapsulation rate was 83.43%±0.39%, all of which met the formulation-related requirements. The morphological results showed that the VT-BSA-NPs were approximately spherical in appearance, regular in shape, and without adhesion on the surface. In vitro release results showed a significantly reduced release rate of VT-BSA-NPs compared with VT, indicating a good sustained release effect. LC-MS/MS was used to establish an analytical method for in vivo analysis of VT and study the plasma pharmacokinetics of VT-BSA-NPs in rats. The results showed that the specificity of the analytical method was good, and the extraction recovery was more than 90%. Compared with VT and VT micro powders, VT-BSA-NPs could significantly increase AUC, MRT, and t_(1/2), which was beneficial to improve the bioavailability of VT.