Objective To investigate the infection effects of different strains(Prototype,Delta,Beta,and Omicron BA. 1)of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)on transgenic mice K18-hACE2 expressing angiotensinconverting enzyme 2(ACE2)by nasal drip.MethodsMice were challenged with each strain of different gradients of doses by nasal drip,which were monitored for body mass and survival daily for 6 d in Beta group and 14 d in the other three groups. The median lethal dose(LD_(50))was calculated by IBM SPSS Statistics 26 analysis software,and the virulence of different SARS-CoV-2 strains were compared by detection of the viral nucleic acid loads of lung,brain and turbinate tissues and the lesion of lung tissues.ResultsBeta strain showed the strongest virulence and the highest lethality,and the lowest dose(1 CCID_(50))was 100% lethal with a LD_(50)less than 1 CCID_(50);The LD_(50) of Delta,Prototype and Omicron BA.1 strains were 0. 52,0. 60 and 52. 92 CCID50respectively. The copy number of viral nucleic acid in lung tissue of mice infected with different strains elevated with the increase of challenge dose,and the copy number of viral nucleic acid in brain tissue of dead mice reached 10~8～ 10~(11) copies/mL. The lung tissues of mice infected with different strains of different doses showed different degrees of pathological damage.ConclusionThe virulence of different SARS-CoV-2 strains in K18-hACE2 mice from high to low were Beta,Delta,Prototype and Omicron BA.1.

The main content of TCM emotional therapy is according to the pathogenesis of abnormal emotional changes, such as functional disorder of viscera, qi and blood, corresponding therapeutic methods are formulated for the purpose of regulating mental state, eliminating emotional stimulating, restoring balance of viscera, qi and blood, and treating diseases in both body and mind. This paper outlined the emotional therapy in Chinese Medicine, demonstrated that TCM psychology has a long history, rich contents and variety of methods.

Depressed syndrome theory in Chinese Medicine originated from Huang Di Nei Jing and was developed and consummated by later doctors.Since the pathological changes and treatment of five essences depressed syndrome were ehcidated in Huang Di Nei Jing,doctors from successive generations had continuously been tmprovmg and ennclung the academic essential of depressed syndrome theory in Chinese Medicine,which made the theory more mature and flawless.All the theories,including Bing Wang'S improvement in the theory of treatment in five essences depressed syndrome,the first time Wuze Chen pointing out emotion leading to depressed syndrome,Qi-Blood-Flow-Smoothly theory raised by Congzheng zhang,the opinion of six depression by Zhenheng Zhu,the development on the theory of treatment in five essences depressed svndrome by Lv Wang,the posed of Abnomal-Rising-and-Failing-of-Vital-Energy by Sigong Dai,Lun Wang's version of relationship of Qi,Blood and phlegmatic stagnation,the idea from Xianke Zhao of all depressed syndrome belonging to liver disease,Yikui Sun'S talking about Qi itself in five viscera is depressive,and Shixiong Wang'S discussion about the most important character of Qi in body is flowing,gradually guided the research on depressed syndrome theory in Chinese Medicine moving forward.In this paper,the author emphasizes the development of depressed syndrome theory in Chinese Medicine.

Objective To evaluate the effect of pelvic floor muscle training in postpartum urinary incontinence. Methods A total of 355 postpartum women 6 weeks after delivery were randomly allocated to training group ( 182 cases) and control group ( 173 cases). The training group attended in one to one pelvic floor muscle training conduction. The control group received the customary information. The two groups finished the questionaire 6 months after delivery to understand the general state of health, duration of pregnancy, urinary tract symptom and urinary incontinence 6 weeks,6 months after delivery. Results Ten cases failed, 4 cases lost in the training group and 6 cases lost in the control group. Significantly fewer women in the training group were reported stress urinary incontinence compared with the control group 6 months after delivery [11.3%(19/168) vs. 21.0%(35/167)](P＜0.01). Significantly fewer frequency of nocturia in the training group was reported compared with the control group 6 months after delivery [(1.3 ± 0.3) times vs.(2.2 ± 0.4) times ] (P ＜ 0.01 ). Conclusion Pelvic floor muscle training plays a positive role in postpartum urinary incontinence.

Decompression, Surgical ; Humans ; Nose ; surgery ; Ophthalmologic Surgical Procedures ; methods ; Orbit ; surgery

Multiple myeloma (MM) is a malignant plasma cell disease, accounting for about 1% of all malignant tumors, is still uncurable, minimal residual disease (MRD) is the reason, therefore, removal of minimal residual disease maybe possible to cure the disease. In a variety of treatment methods, immune gene therapy for multiple myeloma is a hot research topic in recent years, has achieved good results in vitro and in vivo experiments, in this review immune genes therapy in multiple myeloma research would be discussed.

Objective: To study the determinants that affect patient satisfaction to rural doctors. Methods:Based on survey data of Liupanshui City, Guizhou Province, structural equation modeling analysis was adopted, and the study was mainly from the following four aspects:the image of rural doctors, service quality, quality of diagnosis and treatment, and harmonious doctor-patient relationships. Results: The study found that the quality of diagnosis and treatment had the greatest direct impact on rural patient satisfaction, followed by service quality, the image of ru-ral doctors and harmonious doctor-patient relationships;rural patient satisfaction has a significant impact on rural pa-tient loyalty. Conclusion:Rural patient satisfaction and loyalty to rural doctors is mainly based on kinship and geopo-litical relations;given the state of medical technology, the medical environment, medical equipment, service aware-ness and other restrictions, rural doctors cannot fulfill the “gatekeeper” role, and consequently, the primary health-care system has been severely affected.

Objective To explore the value of ultrasonographic diagnosis of deltoid contracture (DC). Methods A total of 37 children with bilateral asymmetric shoulder were reviewed retrospectively, and 8 cases with 9 shoulders were surgically confirmed DC. The results of the ultrasonography and surgery were compared. Results The sensitivity of ultrasonographic diagnosis of DC was 88.89% and specificity was 100%. No statistically significant difference of contracture thickness measurement was found between surgery and ultrasonography. Ultrasonographic findings of DC in children included hyperechoic areas (7 cases) or hypoechoic area (1 case). Conclusion Ultrasounogrphy is an effective method for diagnosis of DC in children.

The clinical data of 16 patients with synovitis,acne,pustulosis,hypemstosis,osteitis (SAPHO) syndrome were retrospectively analyzed.There were 7 men and 9 women with a mean age of (38 ± 11) years at onset and middle-aged females predominated.The most common clinical manifestations were palmoplantar pustulosis and osteoarticular disease involving anterior chest wall,spondylarthrilides and shoulder joint.ECT was the sensitive imaging examination for SAPHO syndrome.Combined treatment can alleviate symptoms of the disease.

BACKGROUND:Majority of patients appeared different degrees of hip joint bursitis and gradual y developed into femoral head necrosis in the early rehabilitation process of severe acute respiratory syndrome. OBJECTIVE:To analyze various causes of the severe acute respiratory syndrome sequela, and to review the treatment method of femoral head necrosis. METHODS:The PubMed database, China Journal Ful-text database (CNKI), VIP database and Wanfang database were retrieved by the first author with computer for the related articles from January 1997 to August 2012. The key words of“infectious atypical pneumonia, sequela, femoral head necrosis, bone ischemia, etiology, infectious atypical pneumonia virus, conservative treatment, operation treatment, total hip replacement”in English and Chinese were put in the title and abstract to search articles. A total of 872 articles were screened out after primary retrieval, and eventual y 56 articles were included for review. RESULTS AND CONCLUSION:Severe acute respiratory syndrome sequela, femoral head necrosis, was related with the dose and duration of hormone, patient’s sensitivity to hormone, using method, the secretion of leptin and bone calcitonin, and also infectious atypical pneumonia virus. The femoral head necrosis caused by the above factors can be treated with conservative treatment to slow down the process of femoral head necrosis and delay prosthesis replacement. Eventual y, most of the patients wil receive surgical method. For the treatment of advanced severe acute respiratory syndrome sequelae femoral head necrosis, prosthesis replacement can get the best effect.