Objective To evaluate the effect of local flaps on repair of defects after surgical removal of nasal skin tumors.Methods A total of 65 patients with nasal skin tumors were enrolled from Department of Dermatology,People's Hospital of Xinjiang Uygur Autonomous Region between March 2015 and August 2016,and subjected to surgical removal of the nasal skin tumors.According to the location,size,shape and surrounding skin of the nasal defects,nasolabial fold flaps,modified rhomboid flaps,bilobed flaps or frontal nasal flaps were chosen to repair skin and soft tissue defects.Results Of the 65 patients with nasal skin tumors,38 had basal cell carcinoma,20 pigmented nevus,5 keratoacanthoma,and 2 had squamous cell carcinoma.The lengths of the defects after resection were all below 2.5 cm.Nasolabial fold flaps were used in 32 cases,modified rhomboid flaps in 16,bilobed flaps in 12,and frontal nasal flaps in 5.All the flaps survived after the surgery,and no obvious deformation of the nose was observed.No recurrence was observed during 1 year of follow-up.Conclusion For skin defects with the length ≤ 2.5 cm after resection of nasal skin tumors,nasolabial fold flaps,modified rhomboid flaps,bilobed flaps and frontal nasal flaps can be used to repair wounds,with satisfactory efficacy.

Objective To acquire the basic information on diagnostic radiology and radiotherapy institutions and the frequency of medical radiation of Hebei province in 2016.Methods A survey was made using questionnaires for basic information on medical X-ray diagnosis,interventional radiology,radiotherapy and clinical nuclear medicine.Values of frequencies were derived for each type of medical X-ray procedure by dividing the total population.Results In 2016 there were 2 951 institutions at province level and 6 966 pieces of equipment involved in diagnostic radiology and radiotherapy treatments.Frequency values were estimated to be 379.25 examinations per 1 000 population in medical X-ay diagnosis,2.31 per 1 000 in interventional radiology,0.55 per 1 000 in radiotherapy and 1.65 per 1 000 in clinical nuclear medicine.The frequency for CT examination was 136.39 per 1 000,accounting for 36％ of the total frequencies in the province,with average annual growth rate of 12.4％.The highest value of frequency in clinical nuclear medicine was from Shijiazhuang among all types of medical procedures in different regions,11 times higher than the lowest value found in Hengshui city.Although the number of tertiary hospitals only accounted for 2.3％ of the total number of institutions,they contributed 25.5％,by examination number,of the medical X-ray diagnosis and 35.3％ of the CT examination.Interventional radiology and radiotherapy contributed more than 70％ of the total frequencies in the province,and clinical nuclear medicine was as high as 97.7％.Conclusions The basic information on diagnostic radiology and radiotherapy institutions and the frequency of medical procedures in Hebei in 2016 have been preliminarily made clear.Medical exposure could maintain a long-term growth trend.The frequency distribution of medical procedures in various regions and medical institutions is highly unbalanced.It is desirable to enhance the macroeconomic regulation and the management of medical radiation protection in order to rationally perform all types of diagnostic radiology and radiotherapy treatments to protect the health and safety of the patients and the examined individuals,and to promote the sustainable development of the health care services.

Metformin, the first-line treatment of type 2 diabetes, has been also increasingly used in the treatment of some skin diseases, such as psoriasis. This review summarizes therapeutic mechanisms of and clinical research progress in metformin in the treatment of psoriasis, aiming to provide ideas and methods for the treatment of psoriasis, especially psoriasis complicated by metabolic diseases.

Objective:To investigate potential effective components of traditional Chinese medicine and their molecular mechanisms of action in the anti-angiogenic treatment of Kaposi′s sarcoma based on network pharmacology, and to predict key targets and signal pathways in the anti-angiogenic treatment of Kaposi′s sarcoma with traditional Chinese medicine.Methods:According to the previous network pharmacology-based analysis results, main chemical components and targets of Rhizoma Polygoni Cuspidati, Cortex Mori, Rhizoma Smilacis Glabrae and Fructus Perillae were obtained by using the traditional Chinese medicine systems pharmacology database and analysis platform (TCMSP); potential therapeutic targets for angiogenesis and Kaposi′s sarcoma were obtained by searching the GeneCard, OMIM, DrugBank and TTD databases, and a Venn diagram was constructed to obtain targets for the interaction between Kaposi′s sarcoma and anti-angiogenic drug components; a protein-protein interaction model was constructed using the STRING 11.5 platform; the Cytoscape 3.6.0 software was used to construct the component-target visual network. Meanwhile, the Metascape platform was used to analyze the Gene Ontology (GO) functions and the enrichment of Kyoto Encyclopedia of Genes and Genome (KEGG) -based pathways. The main active ingredients and core targets obtained through the above analyses were then verified by molecular docking. Results:The core components of anti-Kaposi′s sarcoma angiogenesis drugs were resveratrol (degree: 142), quercetin (degree: 141), kaempferol (degree: 56), luteolin (degree: 56), β-sitosterol (degree: 37), arachidonic acid (degree: 36), naringenin (degree: 36), etc., and the core target was prostaglandin-endoperoxide synthase 2 (PTGS2). KEGG analysis revealed that the cancer signaling pathways were the important pathways related to the inhibiton of angiogenesis in Kaposi′s sarcoma; functional enrichment analysis showed that the positive regulation of cell migration was the most significantly enriched GO term in the biological process category. Molecular docking results showed that resveratrol, quercetin, kaempferol and luteolin had good affinity with PTGS2, especially quercetin and luteolin exhibited the strongest binding abilities to PTGS2, with the binding energies being -9.4 and -9.5 kcal/mol, respectively.Conclusion:This study showed that the 4 traditional Chinese medicines recorded in TCMSP (including Rhizoma Polygoni Cuspidati., Cortex Mori, Rhizoma Smilacis Glabrae and Fructus Perillae) may play an anti-angiogenic role by regulating cancer signaling pathways and acting on targets such as PTGS2, and predicted the possible anti-angiogenesis mechanisms of traditional Chinese medicines in Kaposi′s sarcoma.

Objective To investigate the number, distribution, and types of radiation of non-medical radiation institutions in Hebei Province, China, and to explore the current radiation protection in the employing units and occupational health management of radiation workers in 2022. Methods A questionnaire survey was conducted in the non-medical institutions engaged in nuclear technology application in Hebei Province, and different types of employing units were selected to monitor the radioactivity level in the workplace. Results A total of 681 non-medical institutions engaged in radiation technology application completed the survey, covering all cities with subordinate districts in the province, including 1605 radioactive devices, 2960 active devices, 45 non-uranium metal mines, and 14 non-sealed workplaces. A total of 8617 radiation workers were surveyed, with a personal dose monitoring rate of 70.9%, a radiation protection training rate of 61.1%, and an occupational health examination rate for radiation workers of 59.3%. A total of 614 radiation protection monitoring instruments were provided, with a personal protective equipment allocation rate of 51.1% and a personal dose alarm device allocation rate of 51.8%. The radiation occupational hazardous factor testing was completed for 54 workplaces, and the results were all qualified. Conclusion There are still significant deficiencies in personal dose monitoring in the radiation work units in non-medical institutions and occupational health examination in the radiation work units in our province. The health administrative departments should strengthen health supervision and law enforcement, enhance radiation protection and skill training for employers, and more effectively control the impact of radiation hazards on personnel health.