Aim To investigate the protective effects and mechanisms of a 5-lipoxygenase (5-LO) inhibitor zileuton on the acute lung injury (ALI) induced by focal cerebral ischemia-reperfusion injury (CIRI) in rats.Methods The right middle cerebral artery in rats were occluded by inserting a thread through internal carotid artery for 2 h,and then reperfused for 24 h.Zileuton(10,50 mg?kg-1) was orally administered 2h before ischemia and 0,5,10 h after reperfusion.Morphological changes of the lung tissue were observed by hematoxylin-eosin (HE)staining technique. Lung wet/dry weight ratios were detected to observe the water content of the lung. The mRNA of cysteinyl leukotrienes recepor1 (CysLTR1) was detected by RT-PCR. The content of Leukotriene B4 (LTB4) in serum was measured by enzyme linked immunosorbent assay (ELISA) technique. The expression of TNF-? protein was measured by immunohistochemical technique. The activities of MPO, T-AOC, and Na+,K+-ATPase from the lung tissue were measured by biochemical method.Results With the use of zileuton 10, 50 mg?kg-1,the pathological changes of the lung were alleviated. and the wet/dry weight in the lung tissue was reduced(P

AIM:To investigate the influential factors of the blood-brain barrier (BBB) permeability and to observe the effects of zileuton,a selective 5-lipoxygenase inhibitor (5-LO),on focal cerebral ischemia-reperfusion injury (CIRI).METHODS:The right middle cerebral artery of the rat was occluded by inserting a thread through internal carotid artery for 2 h,and then reperfused for 24 h. Zileuton (10,50 mg?kg-1,po) was orally administered 2 h before ischemia and at 0,5,10 h after reperfusion. The permeability of blood brain barrier (BBB) was detected by using Evans blue (EB) as a labelling compound. The degree of cerebral edema was estimated by AutoCAD image analysis software. The mRNA of cysteiny leukotrienes receptor1 (CysLTR1) was detected by RT-PCR. The content of LTB4 in serum was measured by enzyme linked immunosorbent assay (ELISA). The expressions of AQP4 and MMP-9 proteins were measured by immunohistochemical staining method. RESULTS:After middle cerebral artery occlussion 2 h/reperfusion 24 h,the permeability of BBB in the brain tissue of injured side and the brain edema degree were increased. The content of LTB4 in serum was elevated. The expression of CysLTR1 mRNA from the brain tissue of occluded side was enhanced. The expressions of MMP-9 and AQP4 proteins of the ischemia realm and ischemia penumbra (IP) of the infarct focus perimeter were increased. Both 10 and 50 mg?kg-1 doses of zileuton dramatically relieved the BBB permeability destruction and the degree of the brain edema,inhibited the expression of CysLTR1 mRNA in the brain tissue and also reduced the content of LTB4 in serum. The expressions of AQP4 and MMP-9 proteins in the brain tissue were also decreased.CONCLUSION:The permeability of BBB is destroyed after the focal CIRI. The mechanisms of protective effect of zileuton might be attributed to its effects by inhibiting the activation of 5-LO pathways on the brain tissue and circulatory blood,reducing the expressions of AQP4 and MMP-9 proteins of the ischemia and IP realm in the brain tissue.

To study the effects of Xuesaitong Injection, an extract from a Chinese herbal medicine, on coagulation function of gastric cancer patients undergoing laparoscopic surgery.

Objective To investigate the tissue stimulation of copper ions to the smooth muscle of murine terminal rectum.Methods In this study copper needle used for electrochemical therapeutic equipment was punctured into submucosal smooth muscle tissue of terminal rectum above the dentate line in 65 male rats.Rats were then divided into 5 groups (10 rats in each group) at random and sacrificed at 1, 3, 4, 6, 8 weeks after respectively, samples were sent for observation of macroscopic and microscopic tissue reaction.Results Rats had no abnormal histological change in the puncture points grossly. Undor microscope, mild edema was detected in the submucosal layer in 1 week group. Remarkable infiltration of inflammatory cells and lymphocytes subsided 3 weeks after, and disappeared five weeks after.Smooth muscle was normal microscopically in all groups.In contrast, platinum and steel needles caused infiltration of plasma cells and neutrophils, ulcers and small abscess formation in around puncture points.Conclusion Inflammatory reaction was induced after puncturing of copper needle into the tissues and the tissue reaction disappeared after 5 Ws.In contrast with platinum and steel needles, copper needle was non-traumatic to the smooth muscle tissue.

Objective To verify whether iron can accelerate the process of liver fibrosis in rats. Methods The rats were divided into control group, high fat diet group, high iron group, high fat diet and high iron group, high fat diet and de?iron group, each with 24 rats. The rats were allowed to freely take normal diet and high fat diet, while the high iron rats, high?fat diet plus high iron rats received intramuscular injection of 50 mg/kg iron dextran every other day;high?fat di?et plus de?iron group rats received tail intravenous injection of 30 mg/kg deferoxamine one month before death, 3 times/week. 8 rats were selected at 4th, 5th, 6th month of intervention, to detect serum hyaluronic Acid (HA), collagen type IV ( COL?IV) , laminin ( LN) , procollagen III ( PC III) , and observe pathological changes in the liver with Masson staining. Results At 5th month of intervention, serum HA level of the high?fat diet plus high iron group was significantly higher than those of high fat diet group and control group. At 6th month of intervention, serum COL?IV and LN levels of the high?fat diet plus high iron group were significantly higher than those of the high fat diet group. At 6th month, serum PC III level was 1. 63 time of those of the high fat diet group. At the 6th month, liver tissue of high fat diet plus high iron group ap?peared collagen deposition revealed by Masson staining, which was not the case in other groups. Conclusions Iron can accelerate high fat?induced liver fibrosis.

Objective:To evaluate the clinical efficacy and safety of fractional CO 2 laser for the treatment of vaginal relaxation syndrome. Methods:Twenty-one females with vaginal relaxation syndrome receiced between December 2016 and January 2017 in our department were treated for 3 times at 1 month interval with femilift fractional CO 2 laser. Vaginal palpation, vaginal squeeze pressure test, vaginal ultrasound, pelvic floor MRI, and Incontinence Questionnaire Short-Form (ICIQ-SF) assessments were performed at baseline and at post-treatment. Results:Significant improvement in female sexual dysfunction and stress urinary incontinence was especially seen based on patient＇s feelings after treatments. A noted progressive differences were observed in FSFI and vaginal pressure test, which were much higher after treatment than before treatment ( P<0.01). Moreover, in 13 cases suffering from mild to moderate stress urinary incontinence (SUI), fractional CO 2 laser treatment was associated with a significant improvement of ICIQ-SF scores ( P<0.01). All subjects successfully completed the study with no adverse events such as infections, bleeding and pain, etc. Conclusions:Fractional CO 2 laser treatment is an effective treatment for female sexual dysfunction and stress urinary incontinence caused by vaginal relaxation syndrome.

Objective: To explore the effect of group cognitive behavioral therapy (GCBT) on cognitive control among college students with high obsessive compulsive traits, to provide basic information for the psychological counseling intervention for college students. Methods: From March to April 2019, 687 students were conveniently selected from 2 universities in Hefei. According to the inclusion and exclusion criteria, 58 students with high obsessive traits were selected and divided into experimental group ( n =29) and control group ( n =29) by random number table method. The experimental group received cognitive behavioral group counseling for 4 weeks (1.5 h each time, twice a week), while the control group receive no intervention. The Obsessive Compulsive Inventory Revised (OCI-R), Stroop Color Word Test (SCWT), Digital Span Test (DST), and Wisconsin Card Sorting Test (WSCT) were used to assess in two groups at baseline and 4 weeks later. Results: After 4 weeks, the scores of OCI-R in the GCBT group (10.28±7.22) was lower than that of in the control group (15.90±10.20) ( t=2.42, P<0.05). Before and after intervention, compared with the control group [(21.89±6.63, 20.52±7.37)s, (8.62±4.43, 8.04±4.84)s] in Stroop C and Stroop interfere effects (SIE), the GCBT group [(22.14±4.92, 16.81±3.43)s, (8.36±3.87, 4.82±1.86)s], the interaction of time group was statistically significant ( F =14.60, 10.54, P <0.05). Compared with the control group (6.21±1.35, 6.55±1.45)times, the scores of DST reverse in the GCBT group (6.31±1.44, 7.24±1.38) times were statistically significant ( F=3.96, P <0.05). Conclusion It suggests that cognitive behavioral group counseling can improve the inhibitory control and working memory of college students with high obsessive compulsive traits, but does not change the cognitive flexibility.

Objective To observe the changes of laboratory blood indexes in patients with intrahepatic cholestasis of pregnancy(ICP),and analyze the value of blood inflammation indexes and liver function indexes in the diagnosis of ICP and the prediction of delivery mode.Methods A total of 251 patients diagnosed with ICP in this hospital from January 2021 to December 2022 were selected as the ICP group,and another 200 healthy pregnant women were selected as the control group.The patients with ICP were further divided into the severe ICP group(n=47)and the mild ICP group(n=204),the vaginal delivery group(n=113)and the cesarean section group(n=138)according to the severity of ICP and delivery mode.Mann-Whitney U test was used for comparison of parameters between groups,and Spearman method was used for correlation analy-sis.Receiver operating characteristic(ROC)curves were used to evaluate the efficacy of laboratory indicators in diagnosing ICP and predicting delivery mode.Results Neutrophil/lymphocyte ratio(NLR)[6.01(4.45,8.37)vs.3.36(4.12,3.51)]and aspartate transaminase(AST)level[20.00(16.00,33.00)U/L vs.15.00(13.00,18.00)U/L]in the ICP group were significantly higher than those in the control group(P＜0.05),and NLR in the severe ICP group was significantly higher than that in the mild ICP group[4.93(3.87,7.35)vs.4.14(3.12,5.17),P＜0.05].Correlation analysis showed that NLR was positively correlated with AST level(r=0.279,P＜0.001)and ICP severity(r=0.139,P=0.028)in patients with ICP.The area under ROC curve(AUC)of NLR combined with AST for ICP diagnosis was 0.882(95％CI:0.851-0.913).In ad-dition,cholinesterase(CHE)[6 020.00(5 499.50,6 703.50)U/L vs.5 341.50(4 651.75,6 259.25)U/L]and prealbumin(PA)[199.00(177.71,225.20)mg/Lvs.169.17(139.18,204.40)mg/L]levels in the va-ginal delivery group were significantly higher than those in the cesarean section group(P＜0.05),and the AUC of CHE combined with PA for predicting vaginal delivery in ICP patients was 0.727(95％CI:0.664-0.789).Conclusion NLR and AST have potential value in the diagnosis of ICP,and CHE and PA have poten-tial value in predicting delivery mode of ICP patients.

PURPOSE: Although the effect of lysosome-associated protein transmembrane 4 beta (LAPTM4B) on the proliferation, migration, and invasion of breast cancer (BC) cells has already been studied, its specific role in BC progression is still elusive. Here, we evaluated the effect of different levels of LAPTM4B expression on the proliferation, invasion, adhesion, and tumor formation abilities of BC cells in vitro, as well as on breast tumor progression in vivo. METHODS: We investigated the influence of LAPTM4B expression on MCF-7 cell proliferation, invasion, adhesion, and tube formation abilities in vitro through its overexpression or knockdown and on breast tumor progression in vivo. RESULTS: Cell growth curves and colony formation assays showed that LAPTM4B promoted the proliferation of breast tumor cells. Cell cycle analysis results revealed that LAPTM4B promoted the entry of cells from the G1 into the S phase. Transwell invasion and cell extracellular matrix adhesion assays showed that LAPTM4B overexpression increased the invasion and adhesion capabilities of MCF-7 cells. More branches were observed in MCF-7 cells overexpressing LAPTM4B under an electron microscope. In comparison with LAPTM4B overexpression, LAPTM4B knockdown decreased the expression of vascular endothelial growth factor-A and significantly inhibited the vasculogenic tube formation ability of tumors. These results were also verified with western blot analysis. CONCLUSION: LAPTM4B promoted the proliferation of MCF-7 cells through the downregulation of p21 (WAF1/CIP1) and caspase-3, and induced cell invasion, adhesion, and angiogenesis through the upregulation of hypoxia-inducible factor 1 alpha, matrix metalloproteinase 2 (MMP2), and MMP9 expression. This specific role deems LAPTM4B as a potential therapeutic target for BC treatment.
Blotting, Western ; Breast Neoplasms ; Breast ; Caspase 3 ; Cell Cycle ; Disease Progression ; Down-Regulation ; Extracellular Matrix ; Hypoxia-Inducible Factor 1 ; In Vitro Techniques ; Matrix Metalloproteinase 2 ; MCF-7 Cells ; S Phase ; Up-Regulation ; Vascular Endothelial Growth Factor A

Objective:To explore the clinical efficacy of modified Zhizhutang in treating senile primary constipation due to Qi-Yin deficiency and its influences on gastrointestinal neurotransmitters and gastrointestinal motility. Method:One hundred and twenty-one eligible patients were randomly divided into a control group （n=60） and an observation group （n=61）. On the basis of lifestyle adjustments， patients in the control group further received oral Qihuang Tongmi soft capsule，three capsules per time，three times per day， whereas those in the observation group were further treated with modified Zhizhutang，one bag per day， for eight successive weeks. The number of complete spontaneous bowel movements （CSBM， normal defecation was considered if CSBM ≥ three times per week） before and after treatment was recorded. The main symptoms of constipation，the patient assessment of constipation quality of life （PAC-QOL）， and the traditional Chinese medicine （TCM） syndrome before and after treatment were scored， followed by the anorectal pressure measurement and colonic transit test before and after treatment. The levels of somatostatin （SS），motilin （MTL），substance P （SP） and vasoactive intestinal peptide （VIP） before and after treatment were detected. Result:The weekly average number of CSBM in the observation group was greater than that of the control group （P<0.01）， but the TCM syndrome score was lower than that of the control group （P<0.01）. The normal defecation rate in the observation group was 57.38% （35/61），which was higher than 35% （21/60） of the control group （χ²=6.092，P<0.05）. The scores of the main symptoms of constipation in the observation group were significantly lower than those in the control group （P<0.01）. The PAC-QOL subscale scores and the total score of the observation group significantly declined as compared with those of the control group （P<0.01）. The anal resting pressure and anal maximum systolic pressure of the observation group were higher than those of the control group （P<0.01），while the first sensation volume， urge sensation volume and maximum tolerable volume were lower （P<0.01）. The excretion rates of markers in the observation group at 24 h，48 h and 72 h were significantly elevated in comparison with those in the control group （P<0.01）. Compared with the control group， the observation group also exhibited increased serum MTL and SP （P<0.01） and decreased SS and VIP （P<0.01）. The recurrence rate in the observation group was 34.29% （12/35），obviously lower than 61.90% （13/21） in the control group （χ²=5.051，P<0.05）. The total effective rates in the observation group and the control group were 95.08% （58/61） and 81.67% （49/60） ， implying a significant difference （χ²=5.321，P<0.01）. Conclusion:For the elderly with primary constipation due to Qi-Yin deficiency， oral administration of modified Zhizhutang helps to regulate gastrointestinal neurotransmitters，improve gastrointestinal motility and gastrointestinal emptying rate， alleviate the symptoms of constipation， restore spontaneous bowel movements， improve their quality of life， and lower the recurrence rate. Its clinical effects were better than those of Qihuang Tongmi soft capsule.