The paper is to report the development of an optic-fiber sensing technology method to analyze metronidazole tablets rapidly. In this fiber-optic sensing system, the light from source delivering to probe can be dipped into simple-handling sample solution, absorbed by the solution and reflected to the fiber-optic and detected in the detection system at last. Then the drug content can be shown in the screen from the ultraviolet absorption spectra and the consistency between that obtained by this method and that in China Pharmacopoeia can be compared. With regard to data processing, a new method is explored to identify the authenticity of drugs using the similarity between the sample map and the standard pattern by full ultraviolet spectrum. The results indicate that ultraviolet spectra of tablets can be obtained from this technology and the determination results showed no significant difference as compared with the method in China Pharmacopoeia (P > 0.05), and the similarity can be a parameter to identify the authenticity of drugs.

OBJECTIVE: To investigate the efficacy and safety of Yisui Shengxue Granule (YSSXG), a compound traditional Chinese herbal medicine, in treating beta-thalassemia. METHODS: A randomized single-blinded trial was designed. Sixty patients with beta-thalassemia were divided into two groups: 30 patients in YSSXG-treated group and 30 in placebo parallel-control group. The patients in the two groups were assigned to receive either YSSXG or placebo for three months. The patients' symptoms and their blood indexes such as hemoglobin (Hb), red blood cell (RBC), reticulocytes (Ret) and fetal hemoglobin (HBF) were examined before and after the treatment. Meanwhile, the liver and spleen were examined with B-mode ultrasound. RESULTS: In the YSSXG-treated group, the blood indexes (Hb, RBC, Ret and HBF) and the symptoms of the patients were improved after three-month treatment, with statistical significance compared to those before treatment (P<0.01); hepatauxe and splenomegaly were also relieved (P<0.05) and no adverse reactions were monitored. In the placebo parallel-control group, no significant improvement of the blood indexes and symptoms, as well as the hepatauxe and splenomegaly had been found (P>0.05). CONCLUSION: YSSXG demonstrates obvious clinical efficacy and no adverse reactions in treating beta-thalassemia.

OBJECTIVE: To study the molecular pathogenesis of SLC26A4 mutations associated with inner ear malformations including large vestibular aqueduct syndrome (LVAS), Mondini dysplasia and inner ear malformations but not accompanied with LVAS. METHOD: DNA sample and clinical material were obtained from 14 sporadic LVAS probands, six Mondini dysplasia probands and seven inner ear malformations excluding IVAS probands. SLC26A4 gene mutation was analyzed by direct sequencing for its 20 coding exons. GJB2 gene and also mt12SrRNA were analyzed by direct sequencing. RESULT: In 14 cases of LVAS, two mutations were detected in 12 patients (85.7%, either homozygous or compound heterozygous mutations), and one mutation was found in two patients (14.3%). In six cases of Mondini dysplasia, two mutations were detected in all of patients (100%). No mutation could be found in the seven cases of other inner ear abnormalities not accompanied with LVAS. No pathogenic mutation was detected in all of these 27 probands in GJB2 gene and mt12SrRNA 1555/1494T. CONCLUSION We have shown that LVAS and Mondini dysplasia closely correlate with SLC26A4 gene. No mutation was detected in seven probands of inner ear malformations not accompanied with LVAS. We should study the molecular pathogenesis of this disease in depth.
Adolescent ; Adult ; Child ; Child, Preschool ; Connexins ; Ear, Inner ; abnormalities ; Exons ; Female ; Genome ; Humans ; Infant ; Male ; Membrane Transport Proteins ; genetics ; Mutation ; Sulfate Transporters ; Syndrome ; Vestibular Aqueduct ; abnormalities ; Young Adult

Objective: To examine the potential mediating effect of perceived social support on job insecurity and psychological distress among clinical nurses. Methods: A total of 462 clinical nurses in Shandong Province were selected by convenience sampling method. They were assessed with job insecurity scale, perceived social support and 10-item Kessler Psychological Distress Scale (K10) for the evaluation of job insecurity, self-esteem and psychological distress. Results: The mean score of K10 was (23.72±7.22) points among clinical nurses, and 85.9% (397/462) of them had psychological distress problems. The K10 scores were positively correlated with the scores of job insecurity (r=-0.282, P<0.01), and the K10 scores were negatively correlated with perceived social support scores (r = -0.282, P<0.01). Job insecurity was negatively correlated with perceived social support (r = -0.365, P<0.01). The confidence interval from Bootstrap method indicated perceived social support played a partial mediating role between job insecurity and psychological distress, and the value of mediating effect was 13.7%. Conclusion The relation of perceived social support to job insecurity and psychological distress among clinical nurses are intimate. Perceived social support might mediate the relationship between job insecurity and psychological distress.

Objective: To investigate the clinical values of colposcopy and cervical biopsy and/or endocervical curettage (ECC) in the diagnosis of cervical lesion. Methods: Clinical data of 128 cases of cervical lesion diagnosed by Xuzhou Cancer Hospital from January 23, 2014 to October 11, 2016 were collected and retrospectively analyzed, all patients underwent colposcopy and cervical biopsy and/or ECC. Results: Among them, the age between 30 to 50 years old were 70 cases, whose transformation zone types of Ⅰ, Ⅱ and Ⅲ were 28 cases (40.0%), 23 cases (32.9%) and 19 cases (27.1%), respectively. The age older than 50 years were 45 cases, whose transformation zone types of Ⅱ and Ⅲ were 1 case (2.2%) and 44 cases (97.8%), respectively. Among the 128 cases of cervical lesions, diagnostic results of colposcopy showed that the chronic inflammation were 57 cases, cervical intraepithelial neoplasia (CIN)Ⅰwere 35 cases, CINⅡor CINⅡ~Ⅲ were 8 cases, CIN Ⅲ were 5 cases and cervical cancer were 23 cases. Alternatively, the pathological results showed that the chronic inflammation were 81 cases, CINⅠwere 17 cases, CINⅡor CINⅡ~Ⅲ were 7 cases, CIN Ⅲ were 5 cases and cervical cancer were 18 cases, respectively. Among the 81 cases of chronic inflammation diagnosed by pathology, 52 cases (64.2%) were consistent with the diagnostic results of colposcopy. Among the 17 cases of low grade squamous epithelial cell lesion (LSIL) diagnosed by pathology, 10 cases were in agree with the diagnostic results of colposcopy. Among the 12 cases of high-grade squamous epithelial cell lesion (HSIL) diagnosed by pathology, 9 cases were concordant with the diagnostic results of colposcopy. Among the 18 cases of cervical cancer diagnosed by pathology, 17 cases were consistent with the diagnostic results of colposcopy. Conclusions The type of transformation zone is positively correlated with the age, and it can help to choose biopsy and therapeutic manner. The diagnostic accuracies of HSIL and early stage of cervical cancer by multi-point biopsy of colposcopy and/or ECC are high. The cervical lesions which are difficultly found by direct visualization can be identified by colposcopy, and thus provides objective evidence to determine the therapeutic manner for patients with stage ⅡA of cervical cancer.