Objective To study the relationship between the bile flow and CCK, GAS and SEC hormones in the rabbits after traumatic stress. Methods Bile flow was counted by bile duct intubation and the models of traumatic stress were produced by cutting the hind legs of rabbits. Bile flow, CCK, GAS and secretin in plasma were measured before and after stress. Results Bile flow after traumatic stress was significantly increased (P

OBJECTIVE:To observe the effects of RAD51 gene polymorphism on cancer prognosis and its relationship with therapeutic efficacy of cisplatin chemotherapy in patients with cervical cancer. METHODS:193 cervical cancer patients were selected and genotyped by TaqmanTM genotyping method. Therapeutic efficacy and survival period were observed in cisplatin chemotherapy combined with radiotherapy. RESULTS:The mean survival rate and therapeutic efficacy was significantly correlated with RAD51 genotype. The patients carrying the T gene had better response to drugs,compared to patients with type GG (P<0.05),and the average survival rate significantly increased(P<0.05). CONCLUSIONS:Genetic variation in RAD51 have obvious influence on the prognosis of cervical cancer chemotherapy. Therefore,RAD51 G172T genotypes give effective prognosis information about cervical cancer patients who received cisplatin chemotherapy.

Objective To measure the expressions of Toll like receptors (TLRs) in lesions of condyloma acuminatum (CA). Methods Tissue samples were resected from lesions of 25 patients with CA and normal skin of 16 human controls. Frozen sections were prepared and the expressions of TLRs 1 - 10 were measured by immunohistochemical staining. Results In normal skin samples, there was a strong expression of TLR 6 and 9, medium expression of TLR 1, 3, 10 and weak expression of TLR 2, 4, 5, 7, 8 in the stratum corneum and stratum granulosum, but a weak or negative expression of TLRs in the stratum spinosum and stratum basale. In contrast, a strong expression of TLR 1, 3, 6, 9, medium expression of TLR 4, 8, 10 and weak expression of TLR 2, 5, 7 were detected in keratinocytes of almost all epidermal layers except for stratum basale in CA lesions. Conclusions The expressions of TLRs, especially TLR 1, 3, 6, 9, are markedly enhanced in proliferated keratinocytes in CA lesions compared with normal skin, which is likely to be associated with anti-viral immunity triggered by HPV infection.

Objective To study the expression and significance of monocyte chemotactic protein 1 (MCP-1) in the process of early radiation-induced lung injury in mice.Methods 40 mice were randomly divided into control group (10 cases) and post-irradiation group (30 cases).A large dose (15 Gy) irradiation on chest was performed in post-irradiation group.Every 10 mice in this group were killed on the 1st day (RT1d),the 10th day (RT10d),the 30th day (RT30d),respectively,and the specimens were collected.The expression of MCP-1 mRNA was detected by quantitative real-time PCR (RT-PCR),and MCP-1 and IL-6 proteins in BALF were detected by ELISA.The pathological changes of lung tissue were observed with HE staining.Results Under the microscope,lung tissue began to show inflammation on the 10th day and was more seriousness on the 30th day in post-irradiation group.Immunohistochemistry staining showed that the expression of MCP-1 in lung tissue irradiated was increased.RT-PCR results showed that the relative expressions of MCP-1 mRNA in control group,RT1d group,RT10d group and RT30d group were 7.63±0.77,6.81±0.75,5.75±0.73 and 4.61±0.75,respectively.The differences between RT1d group and control group,RT10d and RT1d group,and RT30d and RT10d were significantly different (all P ＜ 0.05).ELISA results showed that the levels of MCP-1 and IL-6 proteins in post-irradiation group were significantly higher than those in the control group (P ＜ 0.05).Conclusion The expression of MCP-1 in mice after irradiation is abnormal,and MCP-1 may participate in early radiation-induced lung injury.

Objective To study the usefulness of combined flow cytometry (FCM) and polymerasechain reaction examination for clonal TCR gene rearrangements in the diagnosis of T-cell lymphoma (T-NHL). Methods Histopathologic features, immunohistochemistry, flow cytometric immunophenotyping, cytomorphologic evaluation and TCR gene rearrangements of 32 T-NHL were reviewed retrospectively. The control cases were 18 reactive lesions and 1 histiocytic necrotizing lymphaderitis. Results Out of 32 T-NHL,23 were diagnosed as T-NHL by FCM / TCR gene rearrangements. Of 19 control group, 17 were diagnosed as reactive lesions by FCM / TCR gene rearrangements. The sensitivity, specificity and accuracy were 71.9%, 89.5% and 78.4%, respectively. Conclusions FCM / TCR gene rearrangement is a very important technique in diagnosing T-NHL. Thus, patients with fine needle aspiration cytology can be saved from having an invasive surgery.

Objective To detect the expression of melanoma antigen-1 gene (MAGE-l),melanoma antigen-3 gene (MAGE-3) and explore their clinical significance. Methods The expression of MAGE-1 and MAGE-3 in central tumor tissue, para-tumorous normal mucosa and tissue of resection-border were detected by RT-PCR. Results The expression of MAGE-1 was positive in 10 out of 33 (30.30 %) cases of rectal cancer, 4 out of 33 cases (12.12%) and 4 out of 33 cases (12.12 %) in para-tumorous normal mucosa and tissue of resection-border respectively; the expression of MAGE-3 was positive in 14 out of 33(42.42 %) eases of rectal cancer, 6 out of 33 cases (18.18 % ) and 5 out of 33 cases (15.15 %) in para-tumorous normal mucosa and tissue of resection-border respectively; 7 out of 33 cases (21.21%) was expressed MAGE-1 and MAGE-3 simutaneously; 17 out of 33 cases (51.51%) was expressed at least one of MAGE-1 and MAGE-3;the positive rates of MAGE-1 or MAGE-3 in center tumor tissue were significant higher than those of its para-tumorous and resection-border (P＜0.05). The expression of MAGE-1 or MAGE-3 was not related to age, sex, histological grades, metastasis to lymph nodes, duke stages (P＞0.05). Conclusion As their significance, MAGE-1, MAGE-3 protein may be used as a target molecule of immunotherapy for rectal cancer and indexes for follow-up study of rectal cancer as well.

AIM:To explore the differential expression of interleukin-19 (IL-19) and its receptors (IL-20R1/IL-20R2) in the samples of chronic rhinosinusitis (CRS) with or without nasal polyps (CRSwNP and CRSsNP), and to investigate the correlation of IL-19 and its receptors with tissue remodeling factors, including matrix metalloproteinase (MMP)-2, MMP-9 and tissue inhibitor of metalloproteinase (TIMP)-1 in CRS.METHODS:The polyps from CRSwNP patients (n=30), the sinus mucosa from CRSsNP patients (n=15) and the inferior turbinal mucosa of nasal septum de-viation patients (n=15) were collected.The expression of IL-19 and its receptors (IL-20R1/IL-20R2) in each group was detected by real-time RT-PCR and immunohistochemistry.The expression of tissue remodeling factors MMP-2, MMP-9 and TIMP-1 in different groups was detected by real-time RT-PCR and ELISA.RESULTS:Increased mRNA and protein expression levels of IL-19, IL-20R1, IL-20R2 and MMP-9 were observed in CRSwNP group compared with CRSsNP and control group (P<0.05), while elevated expression level of TIMP-1 was observed in CRSsNP group compared with CRSwNP and control group (P<0.05).The relative expression of MMP-2 among the 3 groups showed no obvious difference.The expression of IL-19 and its receptors showed significantly positive correlations with MMP-9 in CRSwNP (P<0.05).No significant correlation between IL-19 and/or its receptors with TIMP-1 in CRSwNP group was observed.CONCLUSION:The high expression levels of IL-19, IL-20R1 and IL-20R2 and their positive correlations with MMP-9 in CRSwNP indica-te that IL-19 and its receptors may be involved in the tissue remodeling of chronic rhinosinusitis.

The shape and structure of granules are controlled by the granulation process, which is one of the main factors to determine the nature of the solid dosage forms. In this article, three kinds of granules of a traditional Chinese medicine for improving appetite and promoting digestion, namely, Jianwei Granules, were prepared using granulation technologies as pendular granulation, high speed stirring granulation, and fluidized bed granulation and the powder properties of them were investigated. Meanwhile, synchrotron radiation X-ray computed micro tomography (SR-µCT) was applied to quantitatively determine the irregular internal structures of the granules. The three-dimensional (3D) structure models were obtained by 3D reconstruction, which were more accurately to characterize the three-dimensional structures of the particles through the quantitative data. The models were also used to quantitatively compare the structural differences of granules prepared by different granulation processes with the same formula, so as to characterize how the production process plays a role in the pharmaceutical behaviors of the granules. To focus on the irregularity of the particle structure, the box counting method was used to calculate the fractal dimensions of the granules. The results showed that the fractal dimension is more sensitive to reflect the minor differences in the structure features than the conventional parameters, and capable to specifically distinct granules in structure. It is proved that the fractal dimension could quantitatively characterize the structural information of irregular granules. It is the first time suggested by our research that the fractal dimension difference (Df,c) between two fractal dimension parameters, namely, the volume matrix fractal dimension and the surface matrix fractal dimension, is a new index to characterize granules with irregular structures and evaluate the effects of production processes on the structures of granules as a new indicator for the granulating process control and optimization.

The purpose of this study is to investigate the applicability of a natural swelling matrix derived from boat-fruited sterculia seed (SMS) as the propellant of osmotic pump tablets. The sugar components, static swelling, water uptake and viscosity of SMS were determined and compared with that of polythylene oxide (WSR-N10 and WSR-303). Both ribavirin and glipizide were used as water-soluble and water-insoluble model drugs. Then, the monolayer osmotic pump tablets of ribavirin and the bilayer osmotic pump tablets of glipizide were prepared using SMS as the osmotically active substance and propellant. SMS was mainly composed of rhamnose, arabinose, xylose and galactose and exhibited relatively high swelling ability. The area of the disintegrated matrix tablet was 20.1 times as that at initial after swelling for 600 s. SMS swelled rapidly and was fully swelled (0.5%) in aqueous solution with relative low viscosity (3.66 +/- 0.03) mPa x s at 25 degrees C. The monolayer osmotic pump tablets of ribavirin and the bilayer osmotic pump tablets of glipizide using SMS as propellant exhibited typical drug release features of osmotic pumps. In conclusion, the swelling matrix derived from boat-fruited sterculia seed, with low viscosity and high swelling, is a potential propellant in the application of osmotic pump tablets.

Abstract: Objective To investigate the occurrence of multidrug-resistance among tuberculosis patients in Hainan Province from 2014 to 2020 and to analyze the influencing factors, aiming to provide reference for formulating drug-resistant tuberculosis control strategies in this region. Methods This study collected sputum samples from the patients with pulmonary tuberculosis admitted to the Second Affiliated Hospital of Hainan Medical University from 2014 to 2020, and performed isolation and identification of Mycobacterium tuberculosis and drug susceptibility testing. After the strains were identified as positive, drug sensitivity tests were conducted, and multi-drug resistant patients were found. Clinical data was retrospectively collected, and chi-square test and unconditioned logistic regression were used to analyze the influencing factors of multidrug resistance. Results A total of 2 672 patients underwent sputum culture, strain identification, and drug susceptibility testing in TB designated hospitals in Hainan Province from January 1, 2014 to December 31, 2020. Among them, 1 942 patients with available drug susceptibility test results and complete clinical data were enrolled, among which 398 cases with drug-resistant TB were included in the case group, and 1 544 cases without drug resistance were included in the control group. Multivariate logistic regression analysis showed that farmers, rural residence, treatment history of retreatment, irregular medication history, number of pulmonary cavities ≥3, and BMI<18.5 were independent risk factors for MDR-TB. The risk of MDR-TB in farmers was higher than that in non-farmers (OR=1.542, 95%CI: 1.150-2.020); patients living in rural areas had a higher risk of multidrug resistance than those living in urban areas (OR=1.445, 95%CI: 1.095-1.907); the risk of MDR in the retreatment patients was higher than that in the initial treatment patients (OR=5.616, 95%CI: 4.250-7.421); the risk of multi-drug resistance in patients with irregular medication was higher than that in patients with regular medication (OR=2.665, 95%CI: 2.012-3.531); the risk of multidrug resistance in patients with pulmonary cavity number ≥3 was higher than that in patients with pulmonary cavity number <3 (OR=5.040, 95%CI: 3.768-6.740); compared with patients with BMI<18.5, patients with BMI=18.5-24.0 and BMI≥24.0 had a lower risk of multidrug resistance (OR=0.735, 95%CI: 0.555-0.975 and OR=0.447，95%CI:0.225-0.888, respectively). Conclusions Retreatment, farmer occupation, rural residence, irregular medication and low BMI may be the risk factors for multidrug resistance in Hainan Province.