Limonin existed in citrus fruits has been shown to have anti-bacterial, anti-viral, anti-feedant, anti-nociceptive, anti-inflammatory activities and anti-carcinogenic activities. But the clinical use is limited by its low bioavailability. The aim of this study is to observe the absorption and secretion transport mechanisms of limonin in intestine which can pave the way for the further study and clinical use. The transport characteristics and mechanisms of limonin in rat were studied by in situ intestine perfusion and in vitro Caco-2 cells method. The intestinal absorption of limonin was probably via a facilitated diffusion pathway which was poor and without segment-selection. Verapamil and ketoconazole improved the absorption remarkably according to the result of in vitro Caco-2 cells study; however, probenecid had no significant effect on the absorption. The P-gp efflux and CYP3A4 metabolism were involved in the poor intestinal absorption and low bioavailability of limonin. The exploration of the intestinal absorption mechanism is crucial to the design of dosage form and clinical use of limonin.

OBJECTIVE To study the pathogenic bacteria and its resistance to antibiotics in chronic suppurative otitis media. METHODS Secretion from 132 cases with chronic suppurative otitis media were cultured. Drug sensitivity tests were done to separate pathogenic bacteria. RESULTS 152 strains pathogenic bacteria were isolated from middle ear secretion. The main pathogenic bacteria were staphylococcus aureus (49 strains), pseudomonas aeruginosa (25 strains) and fungus (5 strains). Staphylococcus aureus was sensitive to fluorquinolones, and the sensitivity rate was 79.6 %. Pseudomonas aeruginosa was sensitive to fluoroquinolones and floxacin, and the sensitivity rates were 84 % and 64 %. CONCLUSION Staphylococcus aureus and pseudomonas aeruginosa are main pathogens of chronic suppurative otitis media in our region. Both of them are sensitive to fluorquinolones. Meanwhile, pseudomonas aeruginosa is also sensitive to ceftazidime of the third cephalosporins. So doctors should choose the sensitive antibiotics for treatment of the chronic suppurative otitis media, that may avoid the bacteria with drug resistance come into being. The fungus can not be neglected as the pathogen in chronic suppurative otitis media.

On the basis of Poincare scatter plot and first order difference scatter plot, a novel heart rate variability (HRV) analysis method based on scatter plots of RR intervals and first order difference of RR intervals (namely, RdR) was proposed. The abscissa of the RdR scatter plot, the x-axis, is RR intervals and the ordinate, y-axis, is the difference between successive RR intervals. The RdR scatter plot includes the information of RR intervals and the difference between successive RR intervals, which captures more HRV information. By RdR scatter plot analysis of some records of MIT-BIH arrhythmias database, we found that the scatter plot of uncoupled premature ventricular contraction (PVC), coupled ventricular bigeminy and ventricular trigeminy PVC had specific graphic characteristics. The RdR scatter plot method has higher detecting performance than the Poincare scatter plot method, and simpler and more intuitive than the first order difference method.
Arrhythmias, Cardiac ; Databases, Factual ; Heart Rate ; Humans ; Ventricular Premature Complexes

Objective To investigate the pathologic features, diagnosis and differential diagnosis of inflammatory myofibroblastic tumor (IMT) in urinary bladder. Methods It was retrospectively reviewed for the characters of pathologic features and immunohistochemistry type in 3 patients diagnosed IMT in urinary bladder. Results 3 patients including 1 female and 2 male were 15, 36 and 60 years old (mean age 37),respectively. All patients underwent partial cystectomy. All cases presented single or multiple, polypoid or nodular mass(es), ranging in size from 1.8 to 5.5 cm. Microscopically, the tumor cell grew in invasive pattern, and were spindled with prominent nucleoli. The lesions varied from highly myxoid to highly cellular lesions. The mitotic rates were invisible. AE1/AE3, CK18 and ALK were positive in IMT. Follow-up was available for 3 patients (2, 18 and 18 months, respectively). None developed recurrences or metastasis. Conclusion IMT in urinary bladder are rare tumors. IMT grows in invasive pattern, and are spindled with prominent nucleoli.The main differential diagnosis of IMT includes embryonal rhabdomyosarcoma in juvenile, sarcomatoid urothelial carcinoma and leiomyosarcoma in adult.

Objective To assess the improvements of left ventricular systolic function by three‐dimensional speckle tracking imaging ( 3D‐STI) in type 2 diabetes mellitus ( T2DM ) patients after short‐term insulin pump intensive therapy . Methods Thirty‐five T2DM patients complicated with microangiopathy and thirty‐two healthy volunteers were studied ,underwent the dynamic image of the four‐chamber view ,three‐dimensional images of left ventricle were obtained for all the individuals . The left ventricular global longitudinal strain ( LVGLS) ,left ventricular global circumferential strain ( LVGCS) ,left ventricular ejection fraction (LVEF) ,peak basal and apical rotation (LV‐ProtB ,LV‐ProtA) ,peak LV twist ( LV‐tw ) were calculated using TomTec software .After insulin pump intensive therapy for two weeks ,all the indexes were reexamined in T2DM patients . Results Compared with control group ,the LVGLS , LVGCS ,LV‐tw and LV‐ProtA were significantly decreased in diabetes mellitus group before and after treatment ( P < 0 .01 or P < 0 .05) . Compared with diabetes mellitus patients before treatment ,the LVGLS ,LVGCS had significant higher level after treatment( P <0 .05) . The LVGLS ,LVGCS ,LV‐tw and LV‐ProtA were significantly correlated with LVEF in type 2 diabetes mellitus patients and normal controls . Conclusions Insulin pump intensive treatment could improve left ventricular systolic function in type 2 diabetes patients complicated with microangiopathy . 3D‐STI can be sensitive to accurately assess the therapeutic effect and has the important clinical value .

In order to identify genes involved in floral transition and development of the orchid species, a full-length APETALA1/FRUITFULL-like (AP1/FUL-like) MADS box cDNA was cloned from Cymbidium faberi (C. faberi) sepals and designated as C. faberi APETALA1-like (CfAP11], JQ031272.1). The deduced amino acid sequence of CfAP11 shared 84% homology with a member of the AP1/FUL-like group of MADS box genes (AY927238.1, Dendrobium thyrsiflorum FUL-like MADS box protein 3 mRNA). Phylogenetic analysis shows that CfAP11 belonged to the AP1/FUL transcription factor subfamily. Bioinformatics analysis shows that the deduced protein had a MADS domain and a relatively conservative K region. The secondary structure of CfAP11 mainly consisted of alpha helices (58.97%), and the three-dimensional structure of the protein was similar to that of homologues in Roza hybrida, Oryza sativa and Narcissus tazetta. Real-time quantitative PCR (qRT-PCR) results reveal low levels of its mRNA in roots, lower levels in leaves during reproductive period than vegetative period, and higher levels in pedicels at full-blossom stage than at bud stage. These results suggest that CfAP11 is involved in floral induction and floral development. Additionally, we observed higher levels of CfAP11 expression in pedicels and ovaries than in other tissues during full-blossom stage, which suggests that CfAP11 may also be involved in fruit formation in certain mechanism.
Amino Acid Sequence ; Cloning, Molecular ; Flowers ; genetics ; metabolism ; Gene Expression Regulation, Plant ; Genes, Plant ; MADS Domain Proteins ; genetics ; Molecular Sequence Data ; Orchidaceae ; genetics ; metabolism ; Plant Proteins ; genetics ; metabolism ; Spatio-Temporal Analysis

The expression or dysfunction of long non-coding RNAs (lncRNAs) is closely related to various hereditary diseases, autoimmune diseases, metabolic diseases and tumors. LncRNAs were also recently recognized as functional regulators of fibrosis, which is a secondary process in many of these diseases and a primary pathology in fibrosis diseases. We review the latest findings on lncRNAs in fibrosis diseases of the liver, myocardium, kidney, lung and peritoneum. We also discuss the potential of disease-related lncRNAs as therapeutic targets for the clinical treatment of human fibrosis diseases.
Autoimmune Diseases ; Fibrosis ; Genetic Diseases, Inborn ; Humans ; Kidney ; Liver ; Lung ; Metabolic Diseases ; Myocardium ; Pathology ; Peritoneum ; RNA, Long Noncoding

Objective:To establish an animal model of acute systemic cold injury in mice.Methods:There were 98 C57BL/6 mice, half male and half female, with body weight of 22-27 g and age of 10 weeks. The mice were randomly divided into 7 groups ( n=14) according to the changes of anal temperature in cold environment, namely, group A (38.5 ± 1) ℃, group B (35 ± 1) ℃, group C (30 ± 1) ℃, group D (25 ± 1) ℃, group E (20 ± 1) ℃, group F (15 ± 1) ℃, and group G (10 ± 1) ℃, among which, group A was the blank control group, and the rest groups were the experimental group. The mice in the blank control group were placed in the normal environment (20 ± 5) ℃, and the mice in the experimental group were placed in the low temperature artificial climate box at - 20℃. The anal temperature of the mice was measured intermittently (as the core temperature), and the time required for the core temperature of the mice to drop to groups B, C, D, E, F and G was recorded. The righting reflex was used to evaluate the consciousness state, the action ability and the general state of each organ of mice were observed, and the blood routine and HE staining of each organ were detected. Results:The lower the core temperature of the experimental group, the longer the time required. The consciousness state, action ability, general state of organs, blood routine, and HE staining of organs in groups B, C, and D were basically the same as those in group A, and there was no acute systemic cold injury. Therefore, the blood routine, general observation of organs, and HE staining of organs in groups B, C, and D were no longer displayed compared with those in group A. Compared with group A, mice in group E began to suffer from disturbance of consciousness and action ability. With the decrease of core body temperature, the damage was aggravated, and mice in group G died. Compared with group A, the indices of blood routine test (WBC, RBC, HGB, PLT) of mice in group E began to decrease, and the univariate variance calculation showed that only WBC changes had statistical significance ( P<0.05). Compared with groups A and E, the indices of blood routine test (WBC, RBC, HGB, PLT) of mice in group F were further reduced, and the changes of each index in univariate variance calculation were statistically significant ( P<0.05). The general observation results showed that compared with group A, the lung, liver and spleen surfaces of mice in group E began to darken, and compared with groups A and E, the lung, liver, spleen, kidney and heart of mice in group F were further deepened and darkened, with irregular edges. HE staining results of various organs showed that compared with group A, the mice in group E began to have partial alveolar structure destruction and a small amount of inflammatory cell infiltration, the central vein of the liver was slightly congested, and the red and white pulp of the spleen were indistinct. Compared with groups A and E, the pathological structure damage of the lung, liver, spleen, kidney, heart and brain tissues of the mice in group F was further aggravated. Conclusions:Detection of consciousness state, action ability, general state of organs, blood routine and HE staining indices of organs in mice under low temperature can simulate the progress of clinical acute cold injury, and the animal model of acute systemic cold injury was successfully prepared.

Objective : This study aims to explore the general rules of profile⁃based forehead protrusion value and appearance in Anhui province, and the results will provide guidance for clinical orthodontic works on matching lateral forehead protrusion and the lower third of the face in the future. Methods : A total of 262 patients were included in this cross⁃sectional study. The materials for the study were the lateral cephalometric radiographs and standard 90⁃degree profile photographs taken from the subjects at the same time. The Frankfurt horizontal( FH) plane was used to calibrate the head position parallel to the ground. The samples were grouped according to genders, ages and dentoskeletal classifications. The measurement points of forehead protrusion in profile included hairline point and soft tissue nasion point. The point where the parallel line connecting two points was tangent to the forehead contour was defined as the most convex point. The value of forehead protrusion in profile was expressed by the distance between two parallel lines. The forehead morphology was studied by tracing the forehead on lateral photographs. P-values < 0. 05 were considered statistically significant. Results : The lateral forehead protrusion of female was larger than that of male, and the difference between male and female decreased gradually from children (P < 0. 001), adolescents (P < 0. 001) to adults. The shape of the forehead differed between the two sexes. Female forehead is round, protruding part in the middle, the overall appearance like an arc; Male forehead was more straight, the most convex point was generally located near the eyebrow arch. Conclusion Gender is an important factor influencing profile forehead protrusion and appearance. The difference between male and female forehead protrusion decreases with age. But the shape remains different.

Ferroptosis is a newly discovered method of programmed cell death. Current studies have shown that activation of ferroptosis-related pathways can inhibit the growth and proliferation of tumor cells and reverse their drug resistance. Oral cancer is a common malignant tumor with a high recurrence rate and high drug resistance. Inducing ferroptosis is a potential treatment strategy. There are still many uncertainties in the application of ferroptosis in the treatment of oral cancer, which need to be further explored. This article systematically introduces the mechanism of ferroptosis and its recent progress in oral cancer treatment to provide new mechanisms and methods for the clinical treatment of oral cancer. Current research shows that the mechanism of ferroptosis is mainly related to amino acid metabolism, Fe2+ metabolism, and lipid metabolism. Ferroptosis in oral cancer cells can reverse drug resistance in cancer cells and improve the activity of immune cells. New drugs, such as curcumin analogs and triptolide, can induce ferroptosis in oral cancer, and the development of nanomaterials has improved the utilization rate of drugs. Inhibiting the expression of the ferroptosis-related factors SLC7A11, NF-E2-related factor 2 (Nrf2), and ferritin heavy chain 1 (FTH1) can promote ferroptosis in oral cancer cells. It is a potential target for the clinical treatment of oral cancer, but its translation into clinical practice still needs further research.