Cyberbullying and its effect on health risk behaviors among secondary vocational school students / 中国学校卫生

Objective@#To investigate the current situation of cyberbullying and health risk behaviors among secondary vocational school students, to explore the effects of cyberbullying on health risk behaviors, so as to provide a reference for formulating intervention strategies to promote adolescent health related behaviors.@*Methods@#From March to April 2023, a field survey was conducted on 1 184 students from one secondary vocational school each in Jilin City and Yanji City by random cluster sampling method. The data was analyzed using Chi square tests and generalized linear models.@*Results@#Among secondary vocational school students, 839 individuals (70.9%) experienced the cyberbullying, and 1 036 individuals (87.5%) had one and more health risk behavior group. There was a positive correlation between cyberbullying and health risk behaviors ( r=0.60, P <0.01). The generalized linear model analysis showed that female and no Internet addiction were negatively correlated with the health risk behaviors of secondary vocational students ( β =-2.75, -8.90), and the single parent families and peer pressure was positively correlated with the health behaviors of secondary vocational students ( β =2.56, 4.82)( P ＜0.05). Secondary vocational students experienced cyberbullying who from single parent families, peer pressure and social oriented internet usage were more likely to engage in health risk behaviors ( β= 3.41, 4.88, 2.20, P <0.05).@*Conclusions@#The incidence of cyberbullying and health risk behaviors among secondary vocational school students is relatively high, and cyberbullying can influence the occurrence of health risk behaviors. It is important to focus on and implement guidance for internet use and health behavior education for secondary vocational students from multiple perspectives, including the family, school, and society. Corresponding intervention strategies should be taken to promote the healthy development of adolescents.

Study on quality standard of Jingtian Zhitong cream / 药学实践杂志

Objective To revise the determination method in the quality standard of Jingtian Zhitong cream. Methods The total saponins of angelica sinensis, Ligusticum wallichii, Rhizoma corydalis, and Panax notoginseng saponins were qualitatively identified by thin-layer chromatography (TLC). The contents of notoginsenoside R1, ginsenoside Rg1, and ginsenoside Rb1 in the preparation were determined by high performance liquid chromatography (HPLC). Results TLC showed strong specificity and good resolution. The concentration of notoginsenoside R1 showed a good linear relationship in the range of 0.1604 and 2.0050μg (r=0. 999). The concentration of ginsenoside Rg1 showed a good linear relationship in the range of 0.8003 and 10.0035μg (r=1.000). The concentration of ginsenoside Rb1 showed good linearity in the range of 0.6182 and 7.7275μg (r=1.000). The sample recovery rates were 101.43%, 98.75% and 100.95%, respectively. The relative standard deviation (RSD) were 2.56%, 2.71% and 2.75%, respectively. Conclusion The developed method is accurate and reliable with high sensitivity, which can be used for the quality control of Jingtian Zhitong cream.

Study on quality standard for Xuanxi Rongjin powder / 药学实践杂志

Objective To revise the qualitative and quantitative determination methods of Xuanxi Rongjin powder. Methods TLC was used to qualitatively identify Chuanxiong and Chuanshanlong. The content of cinnamaldehyde in the preparation was determined by HPLC with KR100-5C18 column (250 mm×4.6 mm, 5μm). The mobile phase was acetonitrile-water (35:65) and the detection wavelength was 290 nm. Results TLC can qualitatively identify Chuanxiong and Chuanshanlong. Cinnamaldehyde has a good linear relationship in the range of 0.0489~0.3260 µg/ml (r=1.00), The average recovery was 95.71% (RSD=1.78%). Conclusion The method has high sensitivity, good specificity, simple operation and good reproducibility.

Efficacy and safety of dupilumab in the treatment of 123 cases of atopic dermatitis / 中华皮肤科杂志

Objective:To investigate clinical efficacy and safety of dupilumab in the treatment of atopic dermatitis (AD) .Methods:An ambispective study was conducted on 123 AD patients treated with dupilumab in Department of Dermatology, the Second Xiangya Hospital of Central South University from July 2020 to March 2022, clinical data were collected, and efficacy and safety of dupilumab were evaluated. Primary outcomes included scores of eczema area and severity index (EASI) , patient-oriented eczema measure (POEM) , peak pruritus numerical rating scale (NRS) and dermatology life quality index (DLQI) before and after 4-, 8-, 12- and 16-week treatment, and adverse reactions and events were recorded. Comparison of scores before and after treatment was performed using paired t test or repeated measures analysis of variance, Mann-Whitney U test was used for the comparison of efficacy among patients with different types of skin lesions or different IgE levels, and multiple regression model based on robust standard errors was used to analyze factors influencing the efficacy. Results:Among the 123 AD patients, 107 were enolled into the efficacy analysis, and 85 (79.44%) completed at least 4 weeks of treatment, including 6 (7.06%) achieving EASI75 and 23 (27.06%) achieving EASI50, and the EASI, NRS, POEM, DLQI scores (10.41 ± 6.72, 4.12 ± 1.74, 8.60 ± 4.29, 7.81 ± 4.38, respectively) significantly decreased compared with those before treatment (18.08 ± 10.69, 7.21 ± 2.01, 16.88 ± 5.74, 12.95 ± 5.95, respectively; all P < 0.001) in the 85 patients. Among the 107 patients, 47 (43.93%) completed at least 16 weeks of treatment. Among the 47 patients, 23 (82.14%) of 28 adults and 17 (89.47%) of 19 adolescents and children achieved 75% or greater improvement in EASI score; the EASI, NRS, POEM and DLQI scores before the treatment all significantly differred from those 4, 8, 12, 16 weeks after the treatment (all P < 0.001) , and all the scores were significantly lower at weeks 4, 8, 12 and 16 than at the previous adjacent time points (all P < 0.05) . At week 4 during the treatment, the EASI improvement rate was significantly lower in the AD patients with prurigo nodularis than in those without ( U = 151.00, P = 0.006) , while there was no significant difference in the EASI improvement rate between the AD patients with xeroderma and those without ( P > 0.05) ; at week 16 during the treatment, there was no significant difference in the EASI improvement rate between patients with prurigo nodularis or xeroderma and those without (both P > 0.05) . Multiple regression analysis based on robust standard errors at week 16 showed that the improvement degree in the EASI score was not correlated with the type of skin lesions ( β = 3.20, P = 0.075) , but correlated with age ( β = -0.22, P = 0.030) , whether patients were in adulthood ( β = 9.54, P = 0.049) , immediate family history ( β = 7.46, P = 0.017) ; the improvement degree in the NRS score was correlated with the type of skin lesions ( β = 0.55, P = 0.032) , age ( β = -0.04, P = 0.033) , weight ( β = -0.05, P = 0.020) , whether patients were in adulthood ( β = 2.06, P = 0.003) and whether patients received combined treatment with antihistamines ( β = -1.91, P = 0.001) . Adverse reactions: among the 123 patients, 6 (4.88%) developed conjunctivitis, and 2 (1.63%) developed facial erythema. Adverse events: vitiligo-like changes occurred on the right forehead of 1 patient, and 3 patients discontinued the treatment with dupilumab due to Henoch-Sch?nlein purpura, distal axonal damage in peripheral nerves in both upper limbs, and epilepsy, respectively. The causal relationship between these adverse events and dupilumab was unclear. Conclusion:Dupilumab is effective in the treatment of AD with high overall safety, and can serve as a new treatment option for AD patients with an unsatisfactory response to traditional treatment.

Research advance in androgenetic alopecia in 2020 / 中华皮肤科杂志

Androgenetic alopecia is a distinctive condition associated with genetic factors and effect of androgens, usually adversely affects the appearance and mental health of patients. This review summarizes research progress in the pathogenesis, diagnosis, evaluation and clinical treatment of androgenetic alopecia in 2020.

Clinical analysis of 1 057 patients with critical illnesses in a dermatological ward / 中华皮肤科杂志

Objective:To summarize clinical characteristics of and treatment experience with patients with critical illnesses in a dermatological ward.Methods:All patients with serious or life-threatening conditions, who were hospitalized at the dermatological ward of the Second Xiangya Hospital of Central South University from July 9, 2011 to December 31, 2020, were collected, and their clinical data were retrospectively analyzed. Demographic characteristics, disease types and proportions, main complications, causes of serious or life-threatening conditions, important treatment measures and outcomes were summarized, and causes of death were also analyzed and discussed.Results:A total of 1 057 patients with critical illnesses were collected, with a male-to-female ratio of 1∶1.11, and 64.81% of them aged 18 to 65 years. The types of diseases mainly included drug eruptions (332 cases) , connective tissue diseases (226 cases) , bullous skin diseases (104 cases) , psoriasis (57 cases) , erythroderma (45 cases) , infectious skin diseases (67 cases) , etc. Among them, psoriasis (39 cases) and erythroderma (32 cases) mostly occurred in males, and connective tissue diseases (168 cases) mostly occurred in females. Common complications mainly involved infections, important organ damage or dysfunction, hypoalbuminemia, and fluid, electrolyte and acid-base imbalances. A total of 94 patients were diagnosed with life-threatening conditions, which were found to be mainly caused by primary skin diseases, hematologic abnormalities, respiratory failure, nervous system abnormalities, renal failure, sepsis, fluid, electrolyte and acid-base imbalances, etc. During the management of critical illnesses, 43 patients were treated with high-dose glucocorticoid pulse therapy, 264 were treated with gamma-globulin pulse therapy, 355 were transfused with other blood products, and 34 received special therapies such as hemoperfusion/immunoadsorption therapy, plasma exchange, dialysis, artificial liver support therapy; 42 patients were transferred to the intensive care unit (ICU) , 12 were transferred to the department of surgery for operations, and 12 were transferred to the department of obstetrics and gynecology for delivery or induction of labor. After treatment, 989 patients (93.57%) achieved improvement and were discharged. A total of 14 patients (1.32%) died, of whom 7 died of secondary sepsis, 2 died of severe pulmonary infections, 2 died of asphyxia caused by respiratory mucosa shedding-induced airway obstruction, the other 3 died of gastrointestinal hemorrhage, cerebral hemorrhage and neuropsychiatric systemic lupus erythematosus, respectively.Conclusions:Critical cases in the dermatological ward mainly suffered from serious skin diseases such as severe drug eruptions, connective tissue diseases and bullous skin diseases, as well as complications such as severe underlying diseases, severe organ dysfunction, sepsis or severe fluid, electrolyte and acid-base imbalances. In terms of treatment, it is of critical significance to make a clear diagnosis and assess the severity of disease as early as possible, monitor and prevent possible complications, and to consult with specialists in relevant disciplines in time.

A case of atypical late-onset Netherton syndrome without bamboo hair / 中华皮肤科杂志

A 24-year-old female patient presented with recurrent itchy annular erythema and scales on the trunk and extremities for 9 years. Histopathological study revealed hyperkeratosis with focal parakeratosis, neutrophil aggregation in the stratum corneum, blisters below the stratum corneum, and perivascular infiltration with lymphocytes, a small number of eosinophils and neutrophils in the superficial and middle dermis. Direct immunofluorescence assay showed negative staining for IgG, IgM, IgA and C3. Whole-exome sequencing of the SPINK5 gene showed a missense mutation c.2423C>T (p.T808I) in exon 25, and a splicing site mutation c.2965-1G>A in exon 31. The compound heterozygosity for the two mutations may be the cause of Netherton syndrome in the patient. Based on the clinical manifestations and genetic testing results, the patient was diagnosed with Netherton syndrome.

Value of plasma soluble leukocyte differentiation antigen 14 subtype combined with neutrophil gelatinase associated lipocalin in early diagnosis and prognostic prediction of sepsis in children / 中国小儿急救医学

Objective:To explore the value of plasma soluble leukocyte differentiation antigen 14 subtype(Presepsin) combined with neutrophil gelatinase associated lipocalin(NGAL) in the early diagnosis and prognosis of sepsis in children.Methods:A total of 94 children with sepsis admitted to our hospital from June 2017 to October 2020 were selected, 41 children with shock were classified as septic shock group, and 53 children without shock were classified as sepsis group.Another 41 healthy children in our hospital during the same period were selected as the control group.The plasma levels of Presepsin, NGAL, procalcitonin(PCT) and C-reactive protein(CRP)were detected in three groups.The pediatric critical illness score and sequential organ failure(SOFA)score of children with sepsis were recorded.According to the mortality of the children within 28 days of admission, they were divided into survival group( n=75)and death group( n=19). The plasma levels of Presepsin, NGAL, PCT and CRP, pediatric critical illness score and SOFA score were compared between the survival group and the death group.Pearson test and receiver operating characteristic curve were used to analyze the correlation between plasma Presepsin, NGAL and pediatric critical illness score, SOFA score, and the predictive value of early diagnosis and prognosis of sepsis in children. Results:The levels of plasma Presepsin, NGAL, PCT and CRP in sepsis group and septic shock group were higher than those in control group, and those in septic shock group were higher than those in sepsis group( P<0.05). The plasma levels of Presepsin, NGAL, PCT, CRP and SOFA scores in death group were higher than those in survival group, and the pediatric critical illness score in death group was lower than that in survival group( P<0.05). Plasma Presepsin and NGAL were negatively correlated with pediatric critical illness score( r=-0.676, P<0.001; r=-0.664, P<0.001), and positively correlated with SOFA score( r=0.781, P<0.001; r=0.749, P<0.001). When the plasma Presepsin level was 468.91 ng/L, the sensitivity of area under curve(AUC) for sepsis diagnosis was 85.6% and the specificity was 77.5%.When the plasma NGAL level was 38.94 ng/mL, the sensitivity of AUC for sepsis diagnosis was 82.4%, and the specificity was 65.8%.The AUC of plasma Presepsin combined with NGAL for early diagnosis of sepsis was 0.912(95% CI 0.865 to 0.959), which was higher than of plasma Presepsin of 0.857(95% CI 0.785 to 0.928) and the AUC of NGAL of 0.761(95% CI 0.680 to 0.841). When the plasma Presepsin level was 816.92 ng/L, the sensitivity for predicting the prognosis of sepsis was 73.2% and the specificity was 76.1%.When the plasma NGAL level was 51.27 ng/mL, the sensitivity for predicting the prognosis of sepsis was 67.4% and the specificity was 68.0%.The AUC of plasma Presepsin combined with NGAL to predict the prognosis of sepsis was 0.891(95% CI 0.816 to 0.966), which was higher than the AUC of plasma Presepsin of 0.795(95% CI 0.698 to 0.892) and NGAL of AUC 0.714(95% CI 0.577 to 0.851). Conclusion:Clinical detection of plasma Presepsin and NGAL levels is helpful to early diagnosis of sepsis and judge the severity of the disease in children, which has guiding significance in evaluating the prognosis, and is beneficial to improve the prognosis.

Advances in systemic lupus erythematosus in 2019 / 中华皮肤科杂志

Systemic lupus erythematosus (SLE) is an autoimmune disease that mainly affects young and middle-aged women. It can involve multiple organ systems, with complex and diverse clinical manifestations. The research on the etiology, diagnosis and treatment of SLE has always been a hot spot in this field. In 2019, a lot of new progress was made in the pathogenesis, diagnosis and evaluation, and treatment of SLE in China and other countries, and this review summarizes main representative advances.

Diagnosis and treatment of adult-onset Still′s disease / 中华皮肤科杂志

Adult-onset Still′s disease (AOSD) is a type of systemic inflammatory disease of unknown etiology, with diverse clinical manifestations, and there are some difficulties in its diagnosis and treatment. In recent years, it has been found that some new markers, such as heme oxygenase 1, calreticulin, inflammatory cytokines and advanced glycation end products, can be used for a comprehensive assessment of the activity and severity of AOSD. Moreover, new biological agents, such as tumor necrosis factor inhibitors, interleukin-1 (IL-1) inhibitors, IL-6 inhibitors and recombinant IL-18 binding proteins, bring new hope for the treatment of AOSD. This review mainly summarizes progress in the diagnosis and treatment of AOSD.

Research of TLD calibrated in different standard X-ray RQR radiation field in terms of eye lens dose Hp (3) / 中华放射医学与防护杂志

Objective To compare the calibration result of standard X-ray RQR radiation field between SSDL (NIRP) and CEA LIST LNHB (France),and to explore the feasibility of calibrating Hp (3) in standard X-ray RQR radiation field of SSDL (NIRP).Methods Using a column model with a diameter and high of 20 cm,TLD was calibrated in SSDL (NIRP) and CEA LIST LNHB (France) to measure the personal dose equivalent eye lens dose Hp (3),X-ray RQR radiation field included RQR4 (60 kV),RQR7 (90 kV),RQR9 (120 kV),with energy response,angle response and linear response.Results In terms of energy response,the calibration results of TLD in both SSDL (NIRP) and CEA LIST LNHB (France) were in good agreement.The difference between exposure value and response value was less than 10％.In terms of angle response,the calibration result of TLD in CEA LIST LNHB (France) was better in SSDL (NIRP).The difference between exposure value and response value in CEA LIST LNHB (France) was less than 6％,while the difference between exposure value and response value in SSDI (NIRP) was more than 10％ at angle of 20°.In terms of linear response,both calibration result of SSDL (NIRP) and CEA LIST LNHB (France) were in good agreement.Conclusions The standard X-ray RQR field in SSDL (NIRP) can be used for the calibration of Hp (3).

Clinical analysis of 35 cases of drug-induced hypersensitivity syndrome / 中国医师杂志

Objective:To investigate the clinical features of drug-induced hypersensitivity syndrome (DiHS) and enhance the recognition of its diagnosis and treatment.Methods:Drug-induced hypersensitivity syndrome diagnosed in the Second Xiangya Hospital of Central South University in recent 6 years were retrospectively analyzed and summarized.Results:Of 35 cases of drug-induced hypersensitivity syndrome there were ten types of suspected drugs. Antibiotics were the most common allergy-inducing drug, followed by allopurinol, antiepileptics, and non-steroidal anti-inflammatory drugs. The expected clinical findings of DiHS were characterized by skin rash, fever, enlarged lymph nodes, which may be accompanied by eosinophilia, liver function damaged. The lesions of DiHS were variable and the majority of cases 65.71%(23/35) were characterized by eruptive papules.The main therapeutic approach of DiHS was systemic application of glucocorticoids and intravenous immunoglobulin (IVIG). When necessary its combination with immunosuppressant or hemoperfusion (HP).Conclusions:DiHS should be on the high alert when a patient with medication history, rash, high fever and lymph nodes large, accompanied by eosinophilia, liver function damaged. Predictors of good prognosis are early diagnosis and treatment.

Clinical and pathological analysis of 36 cases of Sweet′s syndrome / 中国医师杂志

Objective:To explore the clinical features of Sweet′s syndrome and analyze its histopathological features and treatment.Methods:The general data, clinical manifestations, laboratory examination, histopathological examination and treatment of 36 patients with Sweet′s syndrome who admitted our hospital from 2013 to 2019 were retrospectively analyzed.Results:The male to female ratio is 1∶1, with the highest incidence in the 50-60 years old range (27.8%). Skin lesions were more common in head and neck (30.6%), limbs (27.8%), upper limbs (19.4%) and whole body (22.2%). Accompanying symptoms were observed in 20 patients (55.6%) and most common are fever (47.2%) and joint pain (19.4%). Malignant tumors were associated with 5 patients (13.9%), chronic inflammation or infection with 17 patients (47.2%), diabetes mellitus with 4 patients (11.1%) and pregnancy with 3 patients (8.3%). It is most easily misdiagnosed as erythema polyforms (11.1%) and allergic dermatitis dermatitis (11.1%). Histopathologic features ware dermal papillary edema, dermal neutrophilic infiltration and nuclear dust. All patients relieved after glucocorticoid therapy.Conclusions:The proportion of male and female in Sweet syndrome is close to the same. Chronic infection and malignant tumor are the most common causes, which are easy to be misdiagnosed in clinic. Comprehensive evaluation of patients′ systemic diseases and accurate histopathological analysis are helpful for early identification and diagnosis of Sweet syndrome.

Research of TLD calibrated in different standard X-ray RQR radiation field in terms of eye lens dose Hp(3) / 中华放射医学与防护杂志

Objective@#To compare the calibration result of standard X-ray RQR radiation field between SSDL (NIRP) and CEA LIST LNHB(France), and to explore the feasibility of calibrating Hp(3) in standard X-ray RQR radiation field of SSDL(NIRP).@*Methods@#Using a column model with a diameter and high of 20 cm, TLD was calibrated in SSDL (NIRP) and CEA LIST LNHB (France) to measure the personal dose equivalent eye lens dose Hp(3), X-ray RQR radiation field included RQR4(60 kV), RQR7(90 kV), RQR9(120 kV), with energy response, angle response and linear response.@*Results@#In terms of energy response, the calibration results of TLD in both SSDL (NIRP) and CEA LIST LNHB (France) were in good agreement. The difference between exposure value and response value was less than 10%. In terms of angle response, the calibration result of TLD in CEA LIST LNHB (France) was better in SSDL(NIRP). The difference between exposure value and response value in CEA LIST LNHB (France) was less than 6%, while the difference between exposure value and response value in SSDL(NIRP) was more than 10% at angle of 20°. In terms of linear response, both calibration result of SSDL (NIRP) and CEA LIST LNHB (France) were in good agreement.@*Conclusions@#The standard X-ray RQR field in SSDL (NIRP) can be used for the calibration of Hp(3).

Clinical analysis for 108 cases of dermatomyositis / 中南大学学报(医学版)

To investigate the clinical characteristics of dermatomyositis, to investigate the types and clinical features of dermatomyositis complicated with malignant tumor, and to provide evidence for clinical diagnosis, treatment and prognostic evaluation.
 Methods: The clinical manifestations and laboratory test results for 108 cases of dermatomyositis with complications in the Second Xiangya Hospital of Central South University were analyzed.
 Results: Patients aged from 14 to 60 years accounted for 62.96%. The first symptom was single skin rash (54.63%), and the most characteristic cutaneous features were asymmetrical proximal myositis with various degrees (97.22%). The visceral involvement was as follows: the digestive tract (31.48%), the heart (19.44%), the lung (26.85%), and the thyroid damage (12.96%). Twelve (11.11%) patients were combined with malignant tumor. The positive rates for albumin (ALB), glutamic oxalacetic transaminase (AST), glutamic-pyruvic transaminase (ALT), lactate dehydrogenase (LDH), creatine kinase (CK), creatine kinase isoenzyme (CK-MB), erythrocyte sedimentation rate (ESR), anti Jo-1 antibody, anti ribonucleoprotein (RNP) antibody, and anti-topoisomerasel (Scl) antibody were 25.93%, 46.30%, 28.70%, 87.04%%, 51.85%, 26.85%, 55.56%, 2.27%, 8.99%, and 2.27%, respectively. The patients were divided into a tumor group and a non-tumor group. The chi-square test results from clinical symptoms and laboratory tests suggested that increase of ESR was a risk factor for dermatomyositis combining tumor. The main strategy of therapy was corticosteroids.
 Conclusion: Dermatomyositis possesses typical skin lesions and dermatitis is the most common initial symptom of dermatomyositis. In clinic, diagnosis of dermatomyositis should be timely combined with muscle enzymes test, electromyography and muscle biopsy. Dermatomyositis can easily involve many organs. Thus relevant examinations (such as chest X-ray and CT) should be done preventively. Rapid ESR is a risk factor for dermatomyositis complicated with malignant tumor and it can be used as an index to guide clinical diagnosis.

Treatment of Rosai-Dorfman disease / 中华皮肤科杂志

Rosai-Dorfman disease (RDD) , also known as sinus histiocytosis with massive lymphadenopathy, is a rare benign self-limited histiocytic proliferative disorder with undetermined etiology. There is still no specific treatment for RDD. Surgical excision is the first-line treatment, while topical and systemic therapy can be chosen for the patients who are not unfit for surgery. Classic topical therapies include topical treatment or local injection with glucocorticoids. Photodynamic therapy and laser immunotherapy are considered as promising topical treatments. Traditional systemic treatments include oral glucocorticoids, immunomodulators, acitretin, and so on. Rituximab is a new treatment option for patients with CD20-positive RDD. This review summarizes new progress in the treatment of RDD in recent years.

Treatment of Rosai-Dorfman disease / 中华皮肤科杂志

Rosai-Dorfman disease (RDD), also known as sinus histiocytosis with massive lymphadenopathy, is a rare benign self-limited histiocytic proliferative disorder with undetermined etiology. There is still no specific treatment for RDD. Surgical excision is the first-line treatment, while topical and systemic therapy can be chosen for the patients who are not unfit for surgery. Classic topical therapies include topical treatment or local injection with glucocorticoids. Photodynamic therapy and laser immunotherapy are considered as promising topical treatments. Traditional systemic treatments include oral glucocorticoids, immunomodulators, acitretin, and so on. Rituximab is a new treatment option for patients with CD20-positive RDD. This review summarizes new progress in the treatment of RDD in recent years.

A rare case report for dermatomyofibroma in nasion / 中南大学学报(医学版)

Dermatomyofibroma is a benign and rare proliferation of myofibroblasts and fibroblasts of the skin.Dermatomyofibroma commonly locates at the shoulder and neck of young adults and adolescents.Other frequently affected anatomic sites are upper arms,thigh,chest wall,back,axillary region and abdomen.Herein,we reported a case of dermatomyofibroma occurred in the nasion.The asymptomatic firm nodule and histopathological features were consistent with dermatomyofibroma.Immunohistochemically,the tumor cells expressed vimentin,HHF35 and α-smooth muscle actin (α-SMA).The patient was followed up for 2 years after excision of the tumors and recurrences were not observed.

Effect of miR-145 targeting Six1 on invasion of gastric cancer and its molecular mechanism / 国际肿瘤学杂志

Objective To investigate the expressions of microRNA-145 (miR-145) and Six1 in gastric cancer tissues and gastric cancer cell lines,and to investigate the effect of miR-145 targeting Six1 on invasion of human gastric cancer cells and its molecular mechanism.Methods Sixty patients with advanced gastric cancer confirmed by gastroscopy and pathology in the Fourth Hospital of Changsha were selected,from January to November,2017.The expressions of miR-145 mRNA and Six1 in 60 cases of gastric cancer and their matched adjacent tissues were detected by real-time fluorescence quantitative PCR (qRT-PCR) and their correlations were analyzed.miR-145 mimics were transfected into MKN-45,BGC-823 and SGC-7901 gastric cancer cell lines.The relative levels of miR-145 mRNA in three gastric cancer cell lines were detected by qRT-PCR.The SGC-7901 gastric cancer cell lines with the highest expression level of miR-145 mRNA were selected for subsequent experiments.The mimic group (transfected with miR-145 mimic),NC group (transfected with miR-145 negative control) and empty carrier group (no addition of any oligonucleotides) were set up.The invasive ability of gastric cancer cells was detected by Transwell test.The ability of angiogenesis was verified by microtubule formation experiment.The expression levels of downstream proteins of the gastric cancer cell lines SGC-7901 such as Six1,E-cadherin and vimentin were detected by Western blotting method.The MirTrap system and the luciferase report test verified whether miR-145 targeted the Six1 gene.Results The expressions of miR-145 mRNA in gastric cancer tissues and in para cancerous tissues were 0.579 ± 0.086 and 1.009 ±0.121,respectively.The difference was statistically significant (t =-22.498,P ＜0.001).The expressions of Six1 were 2.516 ± 0.208 and 1.041 ± 0.227,respectively.The difference was statistically significant (t =37.119,P ＜ 0.001).The expressions of miR-145 mRNA and Six1 were negatively correlated (r =-0.728,P ＜0.001).After overexpression of miR-145,in the mimic,NC and empty carrier groups,the numbers of cells passing through the membrane were 48.550 ± 3.716,82.800 ± 3.797,87.467 ± 8.023,respectively.The difference was statistically significant (F =87.789,P ＜ 0.001).There were significant differences between the mimic and NC groups and between the mimic and empty carrier groups (both P ＜0.001).In the mimic,NC and empty carrier groups,the numbers of tube formation of human umbilical vein endothelial cells were 24.333 ± 1.211,34.167 ±2.041,36.500 ±3.209,respectively.The difference was statistically significant (F =47.103,P ＜ 0.001).There were significant differences between the mimic and NC groups and between the mimic and empty carrier groups (both P ＜ 0.001).In the mimic,NC and empty carrier groups,the expression levels of Six1 in gastric cancer SGC-7901 cells were 1.392 ±0.072,2.426 ±0.099,2.371 ±0.079,respectively.The difference was statistically significant (F =289.517,P ＜ 0.001).There were significant differences between the mimic and NC groups and between the mimic and empty carrier groups (both P ＜0.001).In the mimic,NC and empty carrier groups,the expression levels of E-cadherin were 4.001 ±0.132,2.714 ±0.181,2.653 ±0.218,respectively.The difference was statistically significant (F =106.572,P ＜0.001).There were significant differences between the mimic and NC groups and between the mimic and empty carrier groups (both P ＜ 0.001).In the mimic,NC and empty carrier groups,the expression levels of vimentin were 1.634 ± 0.132,3.349 ± 0.102,3.501 ± 0.185,respectively.The difference was statistically significant (F =389.032,P ＜0.001).There were significant differences between the mimic and NC groups and between the mimic and empty carrier groups (both P ＜ 0.001).MirTrap system verified that the target Six1 mRNA levels in the mimic,NC and empty carrier groups were 1.101 ± 0.097,0.582 ± 0.037,0.573 ± 0.032,respectively.The difference was statistically significant (F =138.922,P ＜ 0.001).There were significant differences between the mimic and NC groups and between the mimic and empty carrier groups (both P ＜0.001).Luciferase reporter assay showed that the double fluorescence ratios of Six1 wild type recombinant vector group were 7.324 ± 0.415,10.755 ± 0.481,10.430 ± 0.309 in the mimic,NC and empty carrier groups respectively.The difference was statistically significant (F =129.345,P ＜ 0.001).There were significant differences between the mimic and NC groups and between the mimic and empty carrier groups (both P ＜0.001).The double fluorescence ratios of Six1 mutant recombinant vector group were 10.938 ± 0.091,11.077 ±0.126,11.028 ±0.205 in the mimic,NC and empty carrier groups respectively,and the difference was not statistically significant (F =1.318,P =0.297).The MirTrap system and the luciferase report test showed that miR-145 was targeted to the Six1 gene.Conclusion The expressions of miR-145 mRNA and Six1 in gastric cancer and para cancerous tissues were different and negatively correlated.miR-145 inhibited the invasion,angiogenesis and epithelial mesenchymal transition of gastric cancer cells by targeting Six1 gene.

A case report of subcutaneous panniculitis-like T cell lymphoma with fever and erythema on the body as the initial symptoms / 中南大学学报(医学版)

Subcutaneous panniculitis-like T cell lymphoma (SPTCL) is a very rare form of peripheral α/β T cell skin lymphoma that is localized primarily in the subcutaneous adipose tissues.It is characterized by single or multiple painful subcutaneous nodules or lumps,often affecting the limbs.The patient presented to the Department of Dermatology,Second Xiangya Hospital,Central South University,who suffered from intermittent fever and erythema on the body,finally was diagnosed as SPTCL after histopathological examinations for twice.