A549 Cells ; Cell Movement ; Cell Proliferation ; Gene Expression Regulation, Neoplastic ; Humans ; Lung Neoplasms/genetics* ; MicroRNAs/genetics*

Objective: To investigate the influence of autologous adipose stem cell matrix gel on wound healing and scar hyperplasia of full-thickness skin defects in rabbit ears, and to analyze the related mechanism. Methods: Experimental research methods were adopted. The complete fat pads on the back of 42 male New Zealand white rabbits aged 2 to 3 months were cut to prepare adipose stem cell matrix gel, and a full-thickness skin defect wound was established on the ventral side of each ear of each rabbit. The left ear wounds were included in adipose stem cell matrix gel group (hereinafter referred to as matrix gel group), and the right ear wounds were included in phosphate buffer solution (PBS) group, which were injected with autologous adipose stem cell matrix gel and PBS, respectively. The wound healing rate was calculated on post injury day (PID) 7, 14, and 21, and the Vancouver scar scale (VSS) scoring of scar tissue formed on the wound (hereinafter referred to as scar tissue) was performed in post wound healing month (PWHM) 1, 2, 3, and 4. Hematoxylin-eosin staining was performed to observe and measure the histopathological changes of wound on PID 7, 14, and 21 and the dermal thickness of scar tissue in PWHM 1, 2, 3, and 4. Masson staining was performed to observe the collagen distribution in wound tissue on PID 7, 14, and 21 and scar tissue in PWHM 1, 2, 3, and 4, and the collagen volume fraction (CVF) was calculated. The microvessel count (MVC) in wound tissue on PID 7, 14, and 21 and the expressions of transforming growth factor β₁ (TGF-β₁) and α smooth muscle actin (α-SMA) in scar tissue in PWHM 1, 2, 3, and 4 were detected by immunohistochemical method, and the correlation between the expression of α-SMA and that of TGF-β₁ in scar tissue in matrix gel group was analyzed. The expressions of vascular endothelial growth factor (VEGF) and epidermal growth factor (EGF) in wound tissue were detected by enzyme-linked immunosorbent assay on PID 7, 14, and 21. The number of samples at each time point in each group was 6. Data were statistically analyzed with analysis of variance for repeated measurement, analysis of variance for factorial design, paired sample t test, least significant difference test, and Pearson correlation analysis. Results: On PID 7, the wound healing rate in matrix gel group was (10.3±1.7)%, which was close to (8.5±2.1)% in PBS group (P>0.05). On PID 14 and 21, the wound healing rates in matrix gel group were (75.5±7.0)% and (98.7±0.8)%, respectively, which were significantly higher than (52.7±6.7)% and (90.5±1.7)% in PBS group (with t values of 5.79 and 10.37, respectively, P<0.05). In PWHM 1, 2, 3, and 4, the VSS score of scar tissue in matrix gel group was significantly lower than that in PBS group (with t values of -5.00, -2.86, -3.31, and -4.45, respectively, P<0.05). Compared with the previous time point within the group, the VSS score of scar tissue at each time point after wound healing in the two groups was significantly increased (P<0.05), except for PWHM 4 in matrix gel group (P>0.05). On PID 7, the granulation tissue regeneration and epithelialization degree of the wounds between the two groups were similar. On PID 14 and 21, the numbers of fibroblasts, capillaries, and epithelial cell layers in wound tissue of matrix gel group were significantly more than those in PBS group. In PWHM 1, 2, 3, and 4, the dermal thickness of scar tissue in matrix gel group was significantly thinner than that in PBS group (with t values of -4.08, -5.52, -6.18, and -6.30, respectively, P<0.05). Compared with the previous time point within the group, the dermal thickness of scar tissue in the two groups thickened significantly at each time point after wound healing (P<0.05). Compared with those in PBS group, the collagen distribution in wound tissue in matrix gel group was more regular and the CVF was significantly increased on PID 14 and 21 (with t values of 3.98 and 3.19, respectively, P<0.05), and the collagen distribution in scar tissue was also more regular in PWHM 1, 2, 3, and 4, but the CVF was significantly decreased (with t values of -7.38, -4.20, -4.10, and -4.65, respectively, P<0.05). Compared with the previous time point within the group, the CVFs in wound tissue at each time point after injury and scar tissue at each time point after wound healing in the two groups were significantly increased (P<0.05), except for PWHM 1 in matrix gel group (P>0.05). On PID 14 and 21, the MVC in wound tissue in matrix gel group was significantly higher than that in PBS group (with t values of 4.33 and 10.10, respectively, P<0.05). Compared with the previous time point within the group, the MVC of wound at each time point after injury in the two groups was increased significantly (P<0.05), except for PID 21 in PBS group (P>0.05). In PWHM 1, 2, 3, and 4, the expressions of TGF-β₁ and α-SMA in scar tissue in matrix gel group were significantly lower than those in PBS group (with t values of -2.83, -5.46, -5.61, -8.63, -10.11, -5.79, -8.08, and -11.96, respectively, P<0.05). Compared with the previous time point within the group, the expressions of TGF-β₁ and α-SMA in scar tissue in the two groups were increased significantly at each time point after wound healing (P<0.05), except for the α-SMA expression in matrix gel group in PWHM 4 (P>0.05). There was a significantly positive correlation between the expression of α-SMA and that of TGF-β₁ in scar tissue in matrix gel group (r=0.92, P<0.05). On PID 14 and 21, the expressions of VEGF (with t values of 6.14 and 6.75, respectively, P<0.05) and EGF (with t values of 8.17 and 5.85, respectively, P<0.05) in wound tissue in matrix gel group were significantly higher than those in PBS group. Compared with the previous time point within the group, the expression of VEGF of wound at each time point after injury in the two groups was increased significantly (P<0.05), and the expression of EGF was decreased significantly (P<0.05). Conclusions: Adipose stem cell matrix gel may significantly promote the wound healing of full-thickness skin defects in rabbit ears by promoting collagen deposition and expressions of VEGF and EGF in wound tissue, and may further inhibit the scar hyperplasia after wound healing by inhibiting collagen deposition and expressions of TGF-β₁ and α-SMA in scar tissue.
Male ; Rabbits ; Animals ; Cicatrix ; Vascular Endothelial Growth Factor A ; Epidermal Growth Factor ; Hyperplasia ; Wound Healing ; Stem Cells ; Transforming Growth Factor beta

ObjectiveTo analyze the mental health status and its influencing factors in middle school students under the regular prevention and control of COVID-19， so as to provide references for the intervention and management of their mental health problems. MethodsFrom March 7 to 21， 2021， a stratified random sampling method was used to select 19 352 students from 17 schools in 3 districts and 9 counties of Linyi City， Shandong Province. Basic data were collected through a self-designed questionnaire. All students completed the Symptom Checklist 90 （SCL-90） to assess their mental health status. Then the factors affecting the mental health status of middle school students were screened using independent sample t-test， one-way ANOVA test and multiple stepwise regression analysis. Results① A total of 6 350 （32.81%） middle school students were found to have mental health problems. ② Each SCL-90 factor score and total average score yielded statistical difference among middle school students of different genders， relationships with classmate， closeness to friends， concerns about the epidemic， and pressure exerted by schoolwork （P<0.01）. Each SCL-90 factor score and total average score of middle school students were significant different in terms of the hours of smartphone usage for recreation per day， sleep duration per night in hours and exercise frequency （P<0.01）. ③ Multiple stepwise regression analysis denoted that female gender， poor relationship with classmate， no close friend and long hours of smartphone usage for recreation were the risk factors for mental health of middle school students （β=0.096， 0.183， 0.064， 0.232， P<0.01）. ConclusionThe prevalence rate of mild mental health problems is quite high among middle school students under the regular epidemic prevention and control. Additionally， female gender， poor relationship with classmate， no close friend and long hours of smartphone usage for recreation have a negative impact on middle school students' mental health.

Objective: To investigate the effect of Rosuvastatin on fasting plasma glucose after coronary stent implantation in elderly patients with non-diabetes mellitus. Methods: A total of 216 non-diabetic elderly patients undergoing coronary stent implantation in our hospital from November 2015 to April 2018 were enrolled, with a follow-up in the cardiovascular department after discharge from the Hospital.The demographic data, follow-up time, and laboratory results at hospital admission and the last outpatient visit were collected retrospectively. Results: At the end of follow-up, Fasting plasma glucose(FPG)was increased in 191 patients with normal baseline FPG level as compared with the baseline level(t=-3.783, P=0.000). The incidence of new-onset diabetes was higher in the pre-diabetes group than in the normal blood glucose group(24.0% vs.2.6%, χ²=16.72, P=0.000). Conclusions Rosuvastatin increases fasting blood glucose levels in elderly non-diabetic patients after coronary stent implantation.Pre-diabetes may increase the risk for rosuvastatin-associated new-onset diabetes.

OBJECTIVETo observe the local control rate, survival time and side effect of three-dimensional conformal radiation therapy combined with Tegafur for postoperative recurrent rectal carcinoma.

METHODSForty patients with postoperative recurrent rectal carcinoma received three-dimensional conformal radiation therapy, 1.8 - 2.0 Gy/once, 5 times every week and the total dose was 54 - 65 Gy. At the same time, the patients took Tegafur orally 40 mg/m(2) twice per day for consecutive 28 days, and one cycle lasted for 42 days. The chemotherapy was applied for 2 cycles after radiotherapy.

RESULTSThe total effective rate (CR + PR) was 70.0%, improvement rate was 90.0%, 1-year survival rate was 70.0%, and 1-year local control rate was 62.5%. There was only a little side effect.

CONCLUSIONSThree-dimensional conformal radiation therapy combined with Tegafur for postoperative recurrent rectal carcinoma have definite effect, with a high local control rate, and patients well tolerance the treatment without serious side effect. It can apparently improve the life quality of the patients.

Adenocarcinoma ; drug therapy ; radiotherapy ; surgery ; Adult ; Aged ; Antimetabolites, Antineoplastic ; adverse effects ; therapeutic use ; Combined Modality Therapy ; Diarrhea ; etiology ; Exanthema ; chemically induced ; etiology ; Female ; Humans ; Leukopenia ; etiology ; Male ; Middle Aged ; Neoplasm Recurrence, Local ; Neoplasm Staging ; Postoperative Period ; Quality of Life ; Radiotherapy, Conformal ; adverse effects ; Rectal Neoplasms ; drug therapy ; radiotherapy ; surgery ; Remission Induction ; Survival Rate ; Tegafur ; adverse effects ; therapeutic use

To explore the cell adhesion molecules (CAMs) CD11a and CD49d in patients with chronic aplastic anemia (CAA) and its clinical implications, the expression of CD11a and CD49d in mononuclear cell (MNC) of bone marrow (BM) and peripheral blood (PB) were measured using APAAP techniques in 20 patients with CAA before and after SSL/C therapy. The results showed that the expression of CD11a and CD49d in MNC of BM and CD11a in MNC of PB increased significantly (P < 0.05) after SSL/C therapy, and there was no significant change of CD49d in MNC of PB in both groups. In conclusion, the decrease of CAMs of CD11a and CD49d participated in the pathogenesis of CAA. The expression of CAMs increases with effective treatment, so the restoration or improvement of altered CAMs of CAA might be beneficial to the proliferation and differentiation of hematopoietic stem cell, and improvement of hematopoiesis in CAA.
Adolescent ; Adult ; Aged ; Anemia, Aplastic ; blood ; Blood Cell Count ; CD11a Antigen ; analysis ; Child ; Chronic Disease ; Female ; Humans ; Integrin alpha4 ; analysis ; Leukocytes ; chemistry ; Male ; Middle Aged

ObjectiveTo investigate the current status of compliance with antiviral therapy with nucleos(t)ide analogues (NAs) among chronic hepatitis B (CHB) patients treated in General Hospital of Ningxia Medical University. MethodsThe CHB patients who received antiviral therapy with NAs at the outpatient and inpatient services of Department of Infectious Diseases, General Hospital of Ningxia Medical University, from May to December, 2017 were enrolled. A questionnaire survey was performed for demographics, family history of CHB, detailed doctor’s advice, daily routines, physical exercise, compliance, awareness of the knowledge about hepatitis B, health belief, and social support, and the influence of various factors on compliance with NAs treatment was analyzed. The Wilcoxon rank-sum test was used for comparison of non-normally distributed continuous data between groups, and the chi-square test or the Fisher’s exact test was used for comparison of categorical data between groups. A multivariate logistic regression analysis was used to investigate the influencing factors for compliance with antiviral therapy with NAs among CHB patients. ResultsA total of 612 questionnaires were distributed, among which 600 were collected, with a questionnaire recovery rate of 98% and a valid rate of 100%. Among the 600 CHB patients, 334 (55.67%) had good compliance with the antiviral therapy with NAs and 266 (44.33%) had poor compliance. Among the 266 CHB patients with poor compliance, 56 (21.05%) did not follow the doctor’s advice and took other drugs, 206 (77.44%) sometimes forgot medication, 187 (7030%) sometimes did not pay attention to medication (time, dose, and frequency), 135 (50.75%) reduced or stopped drugs after symptoms were improved, and 100 (37.59%) stopped the drugs due to symptom aggravation or appearance of other symptoms. The univariate analysis showed that 13 indices were the influencing factors for compliance with NAs treatment among CHB patients (all P＜0.05). A multivariate analysis was performed for these 13 indices and the results showed that race (odds ratio ［OR］=0.218, 95% confidence interval ［CI］: 0.076-0.996, P=0.007), mode of medical payment (OR=0.772, 95%CI: 0.445-0.919, P＜0.001), physical exercise (OR=2.55, 95%CI: 1.472-6.545, P=0.020), level of social support (OR=0.836, 95%CI: 0.649-0.947, P＜0.001), awareness of the outcome of incompliance (OR=0.577, 95%CI: 0.393-0.886, P＜0.001), and self-efficacy (OR=0.094, 95%CI: 0074-0.328, P＜0.001) were independent influencing factors for compliance with NAs treatment among CHB patients. ConclusionCompliance with antiviral therapy among CHB patients is closely associated with the mode of medical payment, psychological state, and self-management ability. Related measures, such as improvement of patients’ ability to pay medical expenses, education on disease risk for patients, and reduction of social discrimination, can help to improve treatment compliance.

OBJECTIVETo explore the clinical efficacy of GEMOX regimen on patients with refractory non-hodgkin's lymphoma.

METHODSEighty-two cases of non-Hodgkin's lymphoma were divided into 2 groups: gemcitabine+oxaliplation(Gem+Oxa) group (42 cases) and vinorelbine+oxaliplatin(Vin+Oxa) group (40 cases) according to chemotherapy regimens. The clinical efficacy, side effects, progression-free survival situation in 2 groups were compared.

RESULTSThere was no significant difference on the clinical effects of 2 groups (P>0.05); The therapeutic efficacy for B cell lymphoma was higher than that for T cell lymphoma(P<0.05); The therapeutic effects for I-II stages was lower than that for III-IV stages(P<0.05); The incidences of platelet decline, nausea and vomit, peripheral nerve symptoms in Gem+Oxa group were lower than those in Vin+Oxa group(P<0.05); There was no significant difference in the median progression free survival(P>0.05).

CONCLUSIONThe efficacy of GEMOX regimen for refractory non-Hodgkin's lymphoma has been confirmed to be good, it has distinct clinical curative effect, it can prolong the progression-free survival time in patients with B cell lymphoma, specially for III-IV stages. It can be used as the preferred method for the treatment of patients with refractory NHL.

Gallbladder Diseases ; Gallbladder Neoplasms ; Humans ; Polyps

Objective: To analyze the clinical data and summarize therapeutic experiences of cervicofacial venous malformations involving isthmus faucium area. Methods: Clinical records from 143 patients with venous malformations involving isthmus faucium area treated at our hospital between January 2012 and January 2016 were reviewed. There were 70 males and 73 females. Age ranged from 1 to 52 years old, with a median age of 14.5 years. There were 19 cases with lesions involving in only 1 subanatomic area above and 124 cases with lesions involving in more than 1 subanatomic areas, including 63 cases with lesions involving in more than 2 areas. There were 50 patients presenting with additional maxillofacial and cervical lesions. Clinical symptoms included snoring (n=98), indistinct phonation (n=49), and tonsil hypertrophy more than degree Ⅱ (n=19). Tracheotomy was performed in 3 patients prior to hospitalization, contigency tracheotomy during hospitalization in 10 patients, and oral trachea cannula in other patients. All therapeutic procedures, including single chemical ablation with ethanol injection (n=94), single lesion resection (n=9) and both of them (n=40), were performed under general anesthesia. Treatment remedies included mesh suture, macroglossia reduction and excision of maxillofacial and cervical lesions for patients presenting with extensive malformations extending to maxillofacial and cervical area. Tonsil resection were done in patients having tonsil venous malformations or tonsil hypertrophy more than degree II. Achauer′s 4-grade criterion was applied to evaluate the treatment outcomes. SPSS 18.0 software was used to analyze the data. Results: Trachea cannula were not extubated untill 24 to 48 hours after treatment. Emergency tracheotomy was done in 2 cases after extubations because of dyspnea, and successful extubations were obtained in other cases. There were no advents of pulmonary vascular spasm or pulmonary embolism. There was significant difference between before and after operation (snore: χ²=105.431, ambiguous pronunciation: χ²=59.698, tonsil hypertrophy more than degree Ⅱ: χ²=33.530, all P<0.01). The patients were followed-up for 1-4 years, and there were 123 cases at grade Ⅳ (complete disappear of lesions in 62 cases without recurrence), 17 at grade Ⅲ , 3 at grade Ⅱ, and no case at gradeⅠ. Conclusions Chemical ablation with ethanol injection for venous malformations involving isthmus faucium area is recommended, wheras combined remedies including injection, mesh suture, macroglossia reduction, and excision of cervicofacial lesions are suggested in treatment of extensive lesions extending to maxillofacial and cervical area. Tonsil resection should be done in patients having tonsil venous malformations or tonsil hypertrophy more than degree Ⅱ, which is safe and highly effective, with good reservation of function, in the treatment of maxillofacial and cervical venous malformations involving isthmus faucium area.