Objective To investigate the correlation of Bax and apoptosis in enterocytes of neonatal rats with necrotizing enterocolitis (NEC).Methods Forty-eight neonatal rats (1 day) were randomly divided into control group (n =24) and NEC model group (n =24) by use of odd and even.The rats in control group were maternal breast-fed.The rats in NEC model group were separated from their mothers.To be given formula feeding,cold exposure after hypoxic-reoxygenation treatment.The intestinal tissue located at the boundary of ileum and caecum of two groups were gained on the 24 h,48 h and 72 h with which that all rats were sacrificed by cutting neck.Section of intestinal tissue were stained with immunohistochemistry to detect the expression of Bax and were stained with TdT mediated dUTP nick end labeling(TUNEL) to evaluate the apoptosis in each group.Results The integrate optical density (IOD) value of expression of Bax in the NEC model group began to increase on the 24 h [(1 005.06-± 11.96) IOD] and reached the summit on the 72 h [(3 340.66 ±68.72)] compared with the control group[(666.55 ± 15.77)IOD].A few of TUNEL positive cells began to increase with time dependence.A lot of TUNEL positive cells could be found in NEC model group on the 24 h [(15.04 ± 0.24) ％],and the apoptotic index reached the peak on the 72 h [(35.65 ±0.61) ％] compared with the control group[(4.73 ±0.04) ％,P ＜0.01]-There was a significantly positive correlation between the cell apoptosis and the ratio change of Bax in NEC model group (r =0.94,P ＜ 0.01).Conclusion There is a significantly positive correlation between the cell apoptosis and the ratio change of Bax in enterocytes of neonatal rats with NEC.The cell apoptosis in enterocytes of neonatal rats with NEC maybe be induced by Bax.

OBJECTIVETo explore whether bone marrow stromal cell line QXMSC1 (H-2(d)) engineered to secrete IL-3 (QXMSC1 IL-3) can improve the hematopoiesis post-allogeneic bone marrow transplantation (BMT) in mice.

METHODSThe stromal cell line QXMSC1 IL-3 was established by transfecting QXMSC1 (H-2(d)) cell with a recombined retrovirus vector PL3SN containing mice IL-3 gene cDNA. Lethally irradiated mice C57BL/6 (H-2(b)) were transplanted with T cell depleted allogeneic bone marrow (BALB/c, H-2(d), 1 x 10(7)/mice) and QXMSC1 IL-3 cells (5 x 10(5)/mice). The numbers of RBC and WBC in peripheral blood were counted 20 and 40 days after bone marrow transplantation. The marrow nucleated cells, CFU-S, CFU-GM, CFU-E and CFU-GEMM yields were measured in recipient mice.

RESULTQXMSC1 IL-3 cells could stably secrete IL-3 and increase the peripheral RBC and WBC counts as well as the number of marrow nucleated cells and CFU-GM, CFU-E, CFU-GEMM yields.

CONCLUSIONCotransplantation of QXMSC1 IL-3 cells with T cell depleted marrow grafts improve hematopoiesis post allogeneic BMT in mice.

Animals ; Bone Marrow Transplantation ; Erythrocytes ; cytology ; Female ; Hematopoiesis ; genetics ; physiology ; Interleukin-3 ; genetics ; Leukocytes ; cytology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Stromal Cells ; metabolism ; transplantation ; Time Factors ; Transfection

The objectives of this study were to prepare polysaccharide modified compound liposomes loaded with paclitaxel (PTX) and doxorubicin (DOX) and characterize their phyisicochemical properties,stability and in vitro release profiles.Both PTX-DOX-Lipo and N-lauryl-O-glycol chitosan (LGC) modified liposomes (PTX-DOX-Lipo-LGC) were successfully prepared,and the morphology of the liposomes was observed by transmission electron microscope (TEM),and particle size and zeta potential were analyzed by dynamic light scattering (DLS).pH and osmotic pressure were also determined.The drug loading and encapsulation efficiency,stability and in vitro release were assayed using high-performance liquid phase.Both PTX-DOX-Lipo and PTX-DOX-Lipo-LGC exhibited spherical shape with smooth surface.The average diameter was about 150 nm.pH value and osmotic pressure were in the range of 5.3-6.1 and 820-870 mOsm/kg,respectively.Both PTX and DOX could be encapsulated in liposomes with high encapsulation efficiency (greater than 90％).Compared with PTX-DOX-Lipo,PTX-DOX-Lipo-LGC exhibited lower leakage,higher stability in serum and more sustained release profiles.Moreover,a quicker release rate was observed in pH 5.8 PBS compared with pH 7.4 PBS.PTX-DOX-Lipo-LGC with high drug loading,good stability and sustained drug release profiles has a wide prospect in future clinical application.

Objective To evaluate the rehabilitation efficacy of music training in pediatric cochlear implants (CIs).Methods The 14 subjects were divided into the training and control groups.The age of the training group was 5 to 8 years old,with an average of 6.12±1.46.The age of the control group was 5 to 7 years old,with the average of 5.86±0.90.The subjects in the training group received speech rehabilitation training together with music training,while those in the control group only received speech rehabilitation training.We performed an analysis to compare the music perception,speech perception,mental state,and the quality of life between the two groups before and after training.Results For training group,the score of social anxiety scale for children(SASC) was 11± 3.27 before training,and 15.71±1.89 after training;the score of note discriminate test was 30.86±13.61 before training,and 42.29± 13.24 after training.For control group,the scores of SASC was 12.71±2.93 before training,and 14.57±3.51 after training;the pre-training score of note discriminate test was 33.14±11.48,and post-training score was 36.57± 10.44.After training,the scores of the two test items in training group were significantly higher than those in control group (P＜0.05).Conclusion Not only does music training promote music and speech perception in pediatric CIs,it also has proved to be an effective psychological construct for the hearing-impaired children that helps develop self-confidence and improve social status.Moreover,children's improvement in hearing and emotional well-being helps alleviate the psychological stress and anxiety experienced by the children's parents.

Objective:To analyze the risk factors of stress perception in patients with systemic lupus erythematosus (SLE) , and construct and validate a risk prediction model for health risk stress perception in SLE patients.Methods:This study is a cross-sectional study. From October 2020 to March 2021, totals of 310 SLE inpatients and outpatients in the Department of Rheumatology and Immunology from 4 general hospitals in Anhui Province were selected as the modeling object. According to the patients' stress perception score, they were divided into the group with health risk stress ( n=132) and the group without health risk stress ( n=178) . The general data, SLE disease activity, general self-efficacy, emotional intelligence, resilience, sleep disturbance, anxiety, depression were compared between the two groups, and independent risk factors were screened out and Logistic regression was used to construct a risk prediction model. Hosmer-Lemeshow and receiver operator characteristic curve (ROC) area were used to test the fit and prediction effect of the model, respectively, and 206 patients were included for model validation. Results:Binary Logistic regression analysis showed that SLE disease activity, resilience, anxiety, payment type, and family monthly income were the influencing factors of stress perception in SLE patients, and the difference was statistically significant ( P<0.05) . Hosmer-Lemeshow fit test showed χ 2=6.123, P=0.633. Besides, the area under the ROC, maximum Youden index, predictive critical value, sensitivity and specificity were 0.903, 0.660, 0.497, 0.795 and 0.865 respectively. Conclusions:This study is based on five independent risk factors of SLE patients' stress perception, namely SLE disease activity, resilience, anxiety, payment type, and family monthly income. The risk prediction model has good sensitivity and specificity, which can provide a reference for clinical assessment of health risk stress perception in SLE patients.

OBJECTIVE: To observe the skin surface microcirculation of acupoints of conception vessel, governor vessel and thoroughfare vessel in patients with primary dysmenorrhea using laser speckle contrast imaging (LSCI), and provide acupoint selection basis of acupuncture-moxibustion for primary dysmenorrhea. METHODS: Ninety-nine healthy female college students with regular menstrual cycles (normal group) and 94 female college students with primary dysmenorrhea (dysmenorrhea group) were recruited. Before menstrual period, on the first day of menstruation, and on the third day after menstruation, LSCI was used to observe the surface microcirculation at the abdominal acupoints of conception vessel, i. e. Yinjiao (CV 7), Qihai (CV 6), Shimen (CV 5), Guanyuan (CV 4), Zhongji (CV 3) and Qugou (CV 2), acupoints of thoroughfare vessel, i. e. Huangshu (KI 16), Zhongzhu (KI 15), Siman (KI 14), Qixue (KI 13), Dahe (KI 12), Henggu (KI 11) and acupoints of lumbosacral region of governor vessel, i. e. Xuanshu (GV 5), Mingmen (GV 4), Yaoyangguan (GV 3), Yaoshu (GV 2) as well as two non-acupoints. RESULTS: Before menstrual period, there was no significant difference in the surface blood perfusion of the acupoints between the dysmenorrhea group and the normal group (P>0.05). On the first day of menstruation, the surface blood perfusion of Xuanshu (GV 5), Mingmen (GV 4), Yaoyangguan (GV 3) and right Huangshu (KI 16) in the dysmenorrhea group was higher than that in the normal group (P<0.05, P<0.01). On the third day after menstruation, the surface blood perfusion of the right Henggu (KI 11) in the dysmenorrhea group was lower than that in the normal group (P<0.05). CONCLUSION In patients with primary dysmenorrhea, on the first day of menstruation, the surface blood perfusion of Xuanshu (GV 5), Mingmen (GV 4), Yaoyangguan (GV 3) of governor vessel, and the right Huangshu (KI 16) of thoroughfare vessel is increased, while on the third day after menstruation, the surface blood perfusion of the right Henggu (KI 11) of thoroughfare vessel is decreased. These findings might provide a basis for acupoint selection in the acupuncture-moxibustion treatment of primary dysmenorrhea.
Humans ; Female ; Microcirculation ; Dysmenorrhea/therapy* ; Menstrual Cycle ; Acupuncture Points ; Acupuncture Therapy

Objective: To assess the dynamic changes of microcirculation at acupoints in patients with primary dysmenorrhea and cold congelation and blood stasis syndrome using laser speckle blood flow imaging. Methods: Patients with primary dysmenorrhea and cold coagulation and blood stasis syndrome (primary dysmenorrhea group, n=53) and healthy female college students(control group, n=57) who met the inclusion and exclusion criteria from October 2020 to July 2022 were enrolled at Hebei University of Chinese Medicine. On the premenstrual and first day of menstruation, a laser speckle blood flow imaging system was used to measure the microcirculation blood flow perfusion on the surface of acupoints related to the conception, thoroughfare, and governor vessels, and stomach, spleen, and bladder meridians in the abdomen and lumbosacral regions. The dynamic changes in microcirculation were calculated based on the difference in average blood flow perfusion at each acupoint before and after menstruation. Receiver operating curve (ROC) analysis was used to analyze the diagnostic efficacy of dynamic changes in microcirculation on the surface of each acupoint. The microcirculation sensitization rate of acupoints was calculated. Results: Compared with the control group, the dynamic changes in microcirculation at the following acupoints in the primary dysmenorrhea group were increased (P<0.05): conception vessel (Yinjiao[CV7], Qihai[CV6], Shimen[CV5], Guanyuan[CV4]); left thoroughfare vessel (left Huangshu[KI16], left Zhongzhu[KI15], left Siman[KI14], left Qixue[KI13], left Dahe[KI12], left Henggu[KI11]); left stomach meridian (left Tianshu[ST25], left Wailing[ST26], left Qichong[ST30]); left spleen meridian (left Daheng[SP15], left Fujie[SP14]); right thoroughfare vessel (right Huangshu[KI16], right Zhongzhu[KI15], right Siman[KI14], right Qixue[KI13], right Dahe[KI12], right Henggu[KI11]); right stomach meridian (right Wailing[ST26], right Daju[ST27], right Shuidao[ST28], right Guilai[ST29], right Qichong[ST30]); and right spleen meridian (right Fujie[SP14]). The area under the ROC curve of conception vessel (Yinjiao[CV7], Qihai[CV6], Shimen[CV5], Guanyuan[CV4]), thoroughfare vessel (right Siman[KI14], left Huangshu[KI16], right Qixue[KI13], right Zhongzhu[KI15], right Dahe[KI12], left Zhongzhu[KI15], left Siman[KI14], right Huangshu[KI16], left Qixue[KI13], right Henggu[KI11], left Henggu[KI11], left Dahe[KI12]); stomach meridian (left Tianshu[ST25], right Guilai[ST29], left Wailing[ST26], right Shuidao[ST28], right Daju[ST27], right Wailing[ST26], right Qichong[ST30], left Qichong[ST30]), and spleen meridian (left Daheng[SP15], left Fujie[SP14], right Fujie[SP14]) was 0.610-0.682 (P<0.05). Compared with the control group, the sensitization rate of some acupoints in the primary dysmenorrhea group increased (P<0.05). Conclusion With the onset of menstruation, the blood flow perfusion of some acupoints in the abdomen (thoroughfare, and conception vessels, and stomach and spleen meridians) of patients with primary dysmenorrhea and cold blood coagulation and blood stasis syndrome increased, and the status of acupoints changed from a resting state to an active state. These acupoints are sensitive in patients with primary dysmenorrhea and cold blood coagulation and blood stasis syndrome and have a certain diagnostic efficacy, providing a basis for further analyzing the efficacy and mechanism of acupuncture and moxibustion to treat primary dysmenorrhea with cold blood coagulation and blood stasis syndrome.