Ehrlich's ascites cancer (EAC) in BALB/C mice by ip transplantable EAC cell is reproduced by us. The change of serum malondialdehyde(MDA), plasma cellular cAMP and adenylate cyclase (AC) are examined in the early, middle and late phase of mice bearing EAC respectively in comparison with that of control group. Results indicate that serum MDA in mice bearing EAC is continuously increased with the progress of the disease in the remarked ways in comparison with the control group. Whereas the plasma cAMP in the mice bearing EAC is markedly decreased in that order. Relation between the change of serum MDA and the cellular cAMP, AC or plasma cAMP shows a significant negative correlation efficiency (P

Nasopharyngeal carcinoma (NPC) in BALB/c nude mice (NM) was re-produced by hypodermic implanting human CNE-2 cell to the right-side of neck-backposi-tion. The changes of plasma malondialdehyde (MDA) and cAMP/cGMP ratio in NM bea-ring human NPC were examined. Meanwhile, we observed that tumor's size, plasma MDAand cAMP/cGMP ratio in NM bearing human NPC were affected by polysacchoridopetide(PSP). Results indicated that in comparison with the control group, NM bearing humanNPC showed a marked increase in plasma MDA(18.25?1.37 nmol/ml),cAMP/cGMP ratio(4.55?0.35), a marked decrease in plasma, cAMP (71.83?8.51 pM/ml) and cGMP(15.77?0.65 pM/ml), both high or low-concentration PSP inhibited NPC growth.Rate of inhibition was between 59.58 to 95.53 percent. PSP decreased plasma MDA,elevated cAMP, cGMP's levels and recovered cAMP/cGMP ratio. Our results suggestedthat the elevated level of MDA in NM bearing human NPC was closely associated withthe presence of NPC. PSP had antitumor effect, probably by means of decreasing freeradicals and recovering cAMP/cGMP ratio.

Objective To develop and test a stressor scale for in-patients with spinal cord injury (SSIPSCI). Methods Based on in-depth interviews and the second-level International Classification of Functioning, Disability, and Health (ICF) categories, a 39-item SSIPSCI was generated and pilot tested. It was then used with 284 inpatients with spinal cord injury. Principal components factor analysis and correlation analysis were performed.Results The exploratory components factor analysis revealed 7 significant stress factors: social activity, economy security, individual activity, relationship with others, physical disorders, bowel and bladder problems and medical fees. Internal consistency was high, with a Cronbach's alpha coefficient of 0. 950 overall and 0. 741 ～ 0. 920 for the individual factors. Test-retest reliability was 0.848. The correlation between SSIPSCI scores and Beck depression inventory (BDI) scores was strong ( r = 0. 665 ). Conclusions The reliability and validity of the SSIPSCI are both satisfactory enough to meet psychometric requirements.

Narrative medicine has brought new ideas to medical humanities education, and its con-notation is suitable to Undergraduate Medical Education Standards-Clinical Medicine (Trial). By analyz-ing the proposal and development of narrative medicine, its foundation and core, its programs and methods, as well as its forms and values, the author deepened the understanding of narrative medicine. And through the following four pathways including strengthening the renewal of ideas and concepts on medical humanities quality education, promoting the diversification of teaching ways and methods of medical humanities educa-tion, enhancing the effect of early exposure to clinical medical students, opening the path of integration narrative medicine and evidence-based medicine, the author analyzed narrative medical enlightenment on medical humanities quality education in China.

Objective To explore the value of conventional and functional MRI image parameter in preoperative grade of pancreatic neuroendocrine tumours (pNET).Methods Data of 35 cases of pNET were retrospectively analyzed,including tumor size,intensity of T1WI's and T2WI's signal,enhancement feature,and apparent diffusion coefficients (ADC)value.All kinds of tumors were classified into G1 to G3 according to WHO's classification in 2010.Results There were 40 pNETs (mean size(4.2±2.9)cm) among the 35 patients (20 male,and 15 female).By WHO's tumor grading,the number of patients from G1 to G3 was 18(45％),12(30％),and 10(25 ％),respectively.A higher grade was associated with larger tumor size (P＜0.05).Intensity of T1WI and T2WI signal has no significance for predicting tumor grade.Enhancement feature had statistical significance on tumor's grade (P＜0.05).ADC value decreased with the increase of tumor's grade,(2.23±0.80) × 10-3,(1.80±0.73) × 10-3,(0.92±0.24) ×10-3 mm2/s respectively for tumors from grade G1 to G3.Conclusion Enhancement features of MRI image and ADC value are conducive to preoperative grading of pNET.

Mucinous tubular and spindle cell carcinoma of the kidney is a rare subtype of renal carcinoma. In July 2019, one case of mucinous tubular and spindle cell carcinoma of the kidney was admitted to our hospital, The laparoscopic partial nephrectomy was performed, and there was no recurrence or metastasis during the follow-up period of 13 months. The disease has no obvious clinical manifestations and its diagnosis depends on pathological and immunohistochemical features. Surgical treatment is the main treatment for this disease, and most patients have a good prognosis.Howerer, the possibility of progression remains in the late stage of the disease.

Objective:To explore the in vitro anticancer effect of bleomycin (Ble) combined with cisplatin (DDP) on human gastric cancer cells.Methods:CCK-8 experiment was conducted to detect the effect of Ble and DDP alone or in combination on the proliferation of gastric cancer cells; Flow cytometry was used to detect changes in cell apoptosis and changes in reactive oxygen species. Cell scratch test was employed to detect cell migration; Western blot experiment was conducted to detect protein expression.Results:The results of CCK-8 showed that 20 μM DDP could inhibit the proliferation of six types of gastric cancer cells by 40%, while the effect of 20 μM Ble was only about 20%. When used in combination, the inhibitory rate on six types of gastric cancer could reach over 60%, with the strongest inhibitory effect on AGS cells. When 10 μM Ble and 10 μM DDP were combined, the proportion of AGS apoptotic cells reached 75.68%, higher than that of the two drugs treated with 20%, respectively 20 μM processing effect. When 10 μM Ble and 10 μM DDP were used in combination, the number of migrating and invading cells was significantly reduced, and the inhibition rate reached 50%. Compared with single use, the difference was statistically significant ( P<0.05). Flow cytometry results showed that the combination of Ble and DDP promoted cancer cell apoptosis by up-regulating the level of reactive oxygen species in cells; Western blot results showed that the expression of p-JAK2 and p-STAT3 decreased after Ble and DDP were combined, indicating that the JAK2/STAT3 signal pathway was inhibited. Conclusions:The combination of Ble and DDP can inhibit the proliferation and migration of gastric cancer cells, promote the apoptosis of gastric cancer cells, and play a synergistic anti-cancer effect. Its mechanism may be related to the up-regulation of ROS levels in cells, thereby inhibiting the activation of the JAK2/STAT3 pathway.

Spinal cord injury is a catastrophic injury causing lifelong severe disabilities, and poses a great burden to the individuals, families and society. In order to promote the standardization in treatment of traumatic spinal cord injury, the consensus on the evaluation, treatment and rehabilitation of traumatic spinal cord injury was suggested by experts, who came from authoritative multicenter in China. The expert consensus, which formed a standardization process from the first aid clinical treatment to rehabilitation of spinal cord injury, shall give a better practical guide for clinic and rehabilitation physicians.

Objective Bibliometric approaches are used to investigate the characteristics and benefits of traditional Chinese medicine treatments for dominant diseases that can be applied in clinical therapy to effectively manage geriatric diseases.Methods Clinical research literature on the use of traditional Chinese medicine in the treatment of geriatric diseases within the past 10 years was retrieved from CNKI,Wanfang,VIP,and CBM databases.The research trends and clinical efficiency of each disease were statistically analyzed to determine the dominant diseases of TCM.Results A total of 22 859 articles were collected,with 3768 included in the research.In accordance with the International Statistical Classification of Diseases and Related Health Problems(ICD-11)of the World Health Organization,the diseases were classified into 17 categories and 149 diseases.The diseases primarily affect the circulatory system,skeletal musculoskeletal or connective tissue system,and digestive system.Conclusions Traditional Chinese medicine clinical trials on the treatment of geriatric illnesses cover a diverse spectrum of diseases,although the distribution of focus is unequal.Potential dominant illnesses were eventually identified to include osteoporosis,constipation,and hypertension,with heart failure,stroke,coronary heart disease,diabetes and its complications,and insomnia being potential sub-dominant diseases.

Objective:This study aimed to compare the audiological characteristics between children with unilateral auditory neuropathy (UAN) and single-sided deafness (SSD) to establish a valid basis for the differential diagnosis of children with UAN.Methods:A retrospective analysis was conducted on audiological and imaging evaluations of children with UAN and SSD who were treated at Beijing Children′s Hospital of Capital Medical University between May 2015 and June 2023. There were 17 children with UAN, comprising 10 males and 7 females, with an average age of 4.7 years. Additionally, there were 43 children with SSD, consisting of 27 males and 16 females, with an average age of 6.5 years. Audiological assessments included Auditory brainstem response (ABR), Steady-state auditory evoked potential (ASSR), Behavioural audiometry, Cochlear microphonic potential (CM), Distortino-product otoacoustic emission (DPOAE), and acoustic immittance test. The results of the audiological assessment and imaging phenotypic between the two groups of children were compared and analyzed by applying SPSS 27.0 statistical software.Results:(1) The UAN group (77.8%) had a significantly higher rate of ABR wave III L than the SSD group (20.9%) ( P<0.01). The PA thresholds at 500 Hz and 1 000 Hz of children with SSD were higher than those of children with UAN, while the ASSR thresholds at 500 Hz, 1000 Hz, 2 000 Hz, and 4 000 Hz of children with SSD were significantly higher than those of children with UAN ( P<0.05). (2) The degree of hearing loss in both UAN and SSD children was predominantly complete hearing loss. The percentage of complete hearing loss was significantly higher (χ2=4.353, P=0.037) in the SSD group (93.0%, 40/43) than in the UAN group (63.6%, 7/11). However, the percentage of profound hearing loss was significantly higher in the UAN group (27.3%, 3/11) than in the SSD group (2.3%, 1/43) ( Fisher′s exact test, P=0.023). In terms of hearing curve configuration, the percentage of flat type was significantly higher in the SSD group (76.7%, 33/43) than in the UAN group (36.4%, 4/11). The proportion of the UAN group (27.3%, 3/11) was significantly higher than that in the SSD group (2.3%, 1/43) in ascending type ( P<0.05). There were no statistically significant differences in the hearing curves of the declining type and other types between the two groups ( P>0.05). (3) The proportion of imaging assessment without abnormality was significantly more common in the UAN group (81.8%) than in the SSD group (37.1%) (χ2=6.695, P=0.015). Conclusions:Compared to children with SSD, the occurrence of wave III L on the ABR test was significantly more common in children with UAN. The percentage of ascending hearing curves was significantly higher in children with UAN than in children with SSD. ASSR thresholds were significantly lower in children with UAN. The normal imaging phenotype was significantly more common in children with UAN than in children with SSD.