OBJECTIVE: To explore the expression and significance of Eotaxin and RANTES in the rat model of allergic rhinitis (AR). METHOD: 20 female SD rats in 6-7 weeks were randomly divided into control group and AR group (n = 10, respectively). AR rat model was made with ovalbumin stimulation. To detect pathological changes in mucosa and chemokine Eotaxin, RANTES in their nasal and lung tissues after execution. RESULT: Compared with the control group, Lung EOS cell counted higher in AR group and the difference was significant (P < 0.01); the AR rats nasal mucosa and lung tissue of Eotaxin, RANTES expression was significantly increased (P < 0.01). CONCLUSION There exist high expression of Eotaxin, RANTES, infiltration of eosinophils in nasal and lung tissue of model rats with allergic rhinitis, inferring that the upper and lower respiratory tract inflammatory response has obvious consistency.
Animals ; Chemokine CCL11 ; metabolism ; Chemokine CCL5 ; metabolism ; Disease Models, Animal ; Female ; Lung ; metabolism ; Nasal Mucosa ; metabolism ; Rats ; Rats, Sprague-Dawley ; Rhinitis, Allergic ; metabolism

Objective:To analyze clinicopathological characteristics of trauma-related melanoma and their relationship with the prognosis of patients.Methods:Clinical data were collected from 87 cases of trauma-related melanomas in Department of Dermatology, Xijing Hospital, the Fourth Military Medical University from 2009 to 2020, and their clinicopathological characteristics were retrospectively analyzed. Mann-Whitney test was used to analyze the difference in Breslow thickness of tumors between patients of different ages or genders; Spearman rank correlation analysis was used to analyze the correlation between the time from trauma to the notice of melanoma and Breslow thickness, Kaplan-Meier survival analysis and Log-Rank test were employed to analyze the relationship between clinicopathological characteristics of melanoma and the prognosis of patients; Cox regression model was used to analyze risk factors for survival duration of patients with trauma-related melanoma.Results:Among the 87 patients with trauma-related melanoma, 47 (54.02%) were males and 40 (45.98%) were females. Among them, melanoma occurred in 50 (57.47%) cases after sharp injuries, and in 37 (42.53%) after blunt injuries. In addition, 31 (35.63%) cases presented with primary lesions on the hands, and 48 (55.17%) on the feet. The Breslow thickness of the primary tumors was significantly higher in the group aged > 55 years than in the group aged ≤ 55 years ( U= 623.500, P= 0.010) , but there was no significant difference between patients of different genders ( P= 0.138) . The time from trauma to the notice of melanoma was negatively correlated with the Breslow thickness of tumors ( r=-0.203, P= 0.037) . The age of patients, Breslow thickness of tumors, Ki67 proliferation index and genetic background of tumor significantly affect the survival duration of patients with trauma-related melanoma ( P= 0.011, 0.031, 0.002 and 0.031, respectively) ; the gender, type of trauma and ulceration of tumor mass did not significantly affect the survival duration of patients ( P= 0.618, 0.114 and 0.379, respectively) . Cox regression model analysis showed that the Ki67 proliferation index and Breslow thickness were independent risk factors affecting the prognosis of trauma-related melanoma (risk ratio [ RR] and 95% confidence interval [ CI] were 1.946 (1.234, 4.217) and 1.839 (1.014, 3.332) , P= 0.039 and 0.045, respectively) . Conclusion:The Breslow thickness of trauma-related melanoma is related to the age of patients and time from trauma to the notice of melanoma; the age, Breslow thickness of tumors, Ki67 proliferation index and genetic background of tumor all affect the survival duration of patients with melanoma, and Ki67 proliferation index and Breslow thickness are independent risk factors affecting prognosis.

This paper summarized the characteristics, rehabilitation needs, and situation and problems of stroke dysfunction in China. Approaches and methods of family rehabilitation were also discussed.

OBJECTIVETo investigate the role of type I collagen as an autocrine protein in promoting the growth lung cancer cells in a three-dimensional (3D) culture system.

METHODSImmunohistochemistry and RT-PCR were used to detect the expression of type I collagen in lung cancer specimens and 5 lung cancer cell lines. The lung cancer cell lines in 3D cultures were treated with vectors harboring short hairpin RNA (shRNA) targeting type I collagen, and the cell growth suppression was evaluated using MTT assay and colony formation assay. The lung cancer cells stimulated with supernatant from lung cancer-derived fibroblasts were tested for the expression of type I collagen mRNA.

RESULTSType I collagen expressions were detected in both the lung cancer tissues and the cell lines. In the 3D culture system, the growth of the cancer cell lines was obviously suppressed by shRNA-mediated type I collagen knockdown evidenced by lowered cell growth rate and colony formation ability. Stimulation with fibroblast culture supernatant resulted in enhanced expressions of type I collagen in the cancer cell lines.

CONCLUSIONAutocrine of type I collagen I is required for maintaining lung cancer cell growth in 3D cultures, and its expression is regulated by fibroblasts. These findings provide new insights into the role of type I collagen I in the tumor microenvironment and point a new direction for targeted therapy of tumors.

Cell Cycle ; Cell Line, Tumor ; Cell Proliferation ; Collagen Type I ; secretion ; Fibroblasts ; Humans ; Immunohistochemistry ; Lung Neoplasms ; metabolism ; RNA, Messenger ; RNA, Small Interfering

Objective:To assess the clinical application of bedside X-ray photography assistor (Patent No. 202 023 219 898.1) in neonatal bedside photography.Methods:From April 2021 to February 2022, a total of 180 pediatric patients were selected who underwent bedside chest X-ray photography in neonatal intensive care unit (NICU) of Union Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology. These patients were divided into contrpol group, consisting of 48 males and 42 females aged at (3.3 ± 2.0) d (0-10 d), and experimental group, including 50 males and 40 females aged (3.1±2.2) d (0-12 d). For chest photography, routine workflow was followed in the control group while in experimental group bedside photography protection and body position fixing device was used. The examination time, reshoot rate and image quality were compared between the two groups.Results:The diagnostic physician score and patient comfort score in the experimental group were higher than those in the control group, with statistically significant differences ( t = 3.98, 3.82, P < 0.001). The success rate in the experimental group was higher than that in the control group, with statistically significant difference ( χ2= 7.84, P < 0.05). The average time of examination in the experimental group was not significantly different from in the control group ( P>0.05 ). Conclusions:The application of bedside X-ray photography assistor in neonatal bedside photography can significantly improve the success rate and image quality and reduce the radiation dose to pediatric patients without significantly increased examination time, which is worthy of clinical application and promotion.

Objective:To attain comprehensive insight into the diagnostic X-ray equipment and examination frequency in radiological diagnosis and treatment institutions in Wuhan, with the purpose of assisting the health administration department in formulating medical exposure protection strategies and efficiently allocating radiological diagnosis and treatment resources.Methods:Using the census method, questionnaires on the basic information on diagnostic X-ray equipment and the annual number of examinations filled out in 2022 by the 1 030 radiological diagnosis and treatment institutions (excluding military and armed police hospitals) were collected through the Wuhan Prevention and Treatment Information Management Platform for Occupational Diseases. To obtain the data on number and frequency of diagnostic X-ray examinations, the different types of diagnostic X-ray examinations were divided by the total number of permanent residents by the end of 2021 in Wuhan.Results:In Wuhan, 1 030 radiological diagnosis and treatment institutions had 7 062 radiation workers and 2 540 diagnostic X-ray units of various types. 37.76% of units and 75.01% of radiation workers were concentrated in tertiary hospitals. The number of diagnostic X-ray units per million population was 186.10, with the top two being 48.65 DR machines per million population and 31.21 intraoral dental machines per million population. The total number of diagnostic X-ray examinations was 11 884 582, with plain radiographs and computed tomography (CT) examinations accounting for 43.61% and 43.59% of the total, respectively. The annual frequency of examinations was 379.75 and 379.52 per 1 000 population, respectively. Radiodiagnosis and treatment resources were higher in central urban areas than that in remote urban areas.Conclusions:The development of diagnostic X-ray equipment in Wuhan was experiencing rapid growth, with potential for further expansion, and the frequency has not yet recovered to the level before the COVID-19 pandemic. The allocation of radiodiagnosis and treatment resources between central urban areas and remote urban areas needs to be coordinated and the management of medical radiation protection should be continuously strengthened, so as to promote the sustainable development of inter-regional radiodiagnosis and treatment, and ensure the health and safety of examinaed patients and indivuduals.

Objective:To analyze the clinical reliability of neonatal bedside photography protection and body position fixing device during neonatal bedside X-ray photography.Methods:A mobile X-ray diagnostic machine was used to project the phantom of children. The samples were divided into group A with conventional bedside photography mode, and group B using neonatal bedside X-ray photography protection device. X-ray diagnostic level dosimeters were placed at the projection and radiation sensitive sites, respectively. The three parts of the chest, pelvis and skull were used as the projection center, and the radiation dose to the projection site and the radiation sensitive site were collected and recorded, and the statistical analysis was carried out.Results:When the chest was taken as the center of the projection, the radiation doses to the lens of the eye, thyroid and gonad in the body model group B of children were 94.4%, 96.9% and 96.7% lower than those in the non-injected part of group A, respectively ( t=-152.55, -445.16, -129.07, P<0.05). When the pelvis was taken as the projection center, the radiation doses to the lens, thyroid and thymus in the body model group B were 85.5%, 87.1% and 94.9% lower than those in the non-projection part of group A, respectively ( t=-50.68, -194.18, -535.94, P<0.05). When the head was taken as the projection center, the radiation doses to thyroid, thymus and gonad in the body model group B were 99.3 %, 97.4 % and 94.3 % lower than those in the non-projection position of group A, respectively ( t=-1 859.97, -542.08, -66.26, P< 0.05). Conclusions:The use of neonatal bedside photography protection and position fixing device during neonatal bedside X-ray photography can significantly reduce the radiation dose to children in non-projected areas under the premise of ensuring image quality. At the same time, it can fix and protect the children, improve the success rate of examination, being worthy of clinical promotion.