AIM To establish an HPLC method for the simuhaneous content determination of five flavonoids in Duchesnea indica (Andr.) Focke at five picking time (April,May,June,July and August).METHODS The analysis of D.indica methanol extract was performed on a 25 ℃ thermostatic Agilent ZORBAX SB-C18 column (250 mm×4.6 mm,5 μm),the mobile phase comprising of acetointrile-0.1％ methanoic acid flowing at 1.0 mL/min in a gradient elution manner,and the detection wavelength was set at 350 nm.RESULTS Rutin,hyperoside,isoquercitrin,celereoin and kaempferol showed good linear relationships within their own ranges (R2 ≥0.998 6),whose average recoveries were 97.1％-101.5％ with the RSDs of 1.37％-2.37％.The contents of five constituents in samples at different picking time exhibited obvious differences,among which lutin and hyperoside contents were the highest in June,isoquercitrin content was the highest in July,and celereoin and kaempferol contents were the highest in August.CONCLUSION The suitable picking time of D.indica is June and July.

OBJECTIVE: To explore the value of estimating chronologic age based on the grades of mandibular third molar development. To evaluate whether mandibular third molar could be used as an indicator for estimating the age under or over 18 years. METHODS: The mineralization status of mandibular third molar of 1 845 individuals aged 10 - 30 was graded and marked based on Demirjian's classification of grades reformed by Orhan. Gender difference was examined by t-test. A cubic regression model was established to analyze the correlation between third molar and chronologic age. Each grade of age cumulative distribution diagram and ROC curve was respectively performed to evaluate the relationship between third molar and the age of 18. Using Bayes discriminant analysis, an equation was established for estimating the age of 18. RESULTS: The inner-rater reliability was 0.903. Statistical analysis showed a moderate correlation between age and grade. Significant differences of both genders were found only in grade D and H (P < 0.05). Males at the grades from 1 to D and females at the grades from 1 to C were under 18 years old, and both males and females at grade H were over 18 years old. The area under the ROC curve was 0.797 (P < 0.05). CONCLUSION Third molar development shows a high correlation with age, and combined with other indicators, it can be used to estimate the age of 18.
Age Determination by Teeth/methods* ; Asian People ; Bayes Theorem ; China ; Female ; Forensic Dentistry ; Humans ; Male ; Molar, Third/diagnostic imaging* ; Radiography, Panoramic ; Reproducibility of Results ; Sex Characteristics

OBJECTIVE: To analyze the correlation of the tympanic injection of triamcinolone acetonide, middle ear pressure (MEP) and radioactive secretory otitis media (RSOM) with nasopharyngeal carcinoma (NPC) after radiotherapy. METHOD: Fifty-two patients suffering NPC without otitis media before radiotherapy were randomly divided into three groups. 17 cases with 34 ears were distributed into treatment group I, and radiotherapy 1 hour before the start of each side of the tympanic cavity injection of triamcinolone acetonide injection, 1-7 weeks 1 times a week. Treatment group I had 17 cases with 34 ears,and radiotherapy 1 hour before the start of each side of the tympanic cavity injection of triamcinolone acetonide injection, 1-12 weeks 1 times a week. And control group consisted of 18 cases with 36 ears who didn't accept such treatment. In all 104 ears, MEP was tested at the begin of radiotherapy and the end of 1st, 2nd, 3rd month after radiotherapy. RESULT: From the beginning of radiotherapy to the end of th 1st, 2nd, 3rd month after radiotherapy, the morbidity of RSOM gradually increased and MEP decreased in the treatment group I , II and the control group, in which treatment group II showed the lowest morbidity of RSOM and MEP was maximum (P < 0.01), and the treatment group I showed the lower morbidity of RSOM and MEP was greater (P < 0. 05), while the control group showed the highest morbidity of RSOM and MEP was minimum (P > 0.05). CONCLUSION Tympanic injection of triamcinolone acetonide could reduce radiation injury, and medication time was positively correlated with the MEP, and a negative correlation with RSOM morbidity, and the longer treatment, the more significant the effect is. The difference is most obvious at the end of 3rd month after radiotherapy. It may be due to the more active repairation after radiation damage in middle ears, but long-term efficacy must continue to observe.
Anti-Inflammatory Agents ; administration & dosage ; Carcinoma ; Ear, Middle ; Humans ; Injections ; Nasopharyngeal Carcinoma ; Nasopharyngeal Neoplasms ; radiotherapy ; Otitis Media with Effusion ; drug therapy ; Radiation Injuries ; Triamcinolone Acetonide ; administration & dosage

Objective:To compare the dosimetric difference between knowledge-based planning (KBP) volumetric modulated arc therapy (VMAT) and intensity-modulated radiotherapy (IMRT) models for predicting the dose distribution during IMRT, aiming to investigate the feasibility of VMAT model to predict the IMRT plans.Methods:Fifty prostate cancer patients who had completed radiotherapy were selected. Manual planning was performed on each selected patient to generate the corresponding IMRT and VMAT plans. The IMRT and VMAT manual plans of the 40 randomly-selected patients were adopted to generate the KBP VMAT and IMRT models. The remaining 10 patients were utilized to predict IMRT plans. VMAT library-derived IMRT model (V-IMRT) and IMRT library-derived IMRT model (I-IMRT) were generated. Dosimetric parameters related to organ-at-risks (OARs) and planning target volume (PTV) were statistically compared among the manual IMRT (mIMRT), V-IMRT and I-IMRT plans.Results:Compared with the mIMRT plan, I-IMRT could significantly better control D max of the PTV ( P=0.039), whereas V-IMRT and I-IMRT plans could better protect the bladder and bilateral femoral heads (both P<0.05). V-IMRT plan could better protect the D max of bilateral femoral heads and the D 15% of the right femoral head (both P<0.05), whereas no significant difference was observed in other OARs and PTV (all P>0.05). Conclusions:Compared with the manual plans, KBP IMRT plan has significant advantages in protecting the OARs. KBP VMAT and IMRT models are both feasible in clinical practice, which yield equivalent accuracy for predicting IMRT plan.

OBJECTIVETo evaluate the long-term survival of multidisciplinary treatment based on thoracic surgery for cervical esophageal squamous cell carcinoma.

METHODSThe clinical characters and follow-up data of forty-one cervical esophageal cancer patients who accepted multidisciplinary treatment based on surgery with preservation of pharynx and larynx were retrospectively reviewed, and the long-term survival was compared with 480 non-cervical esophageal cancers who accepted surgery in the same period done by the same surgical team.

RESULTSThere were 28 males and 13 females with a mean age of 62 years old. In the cervical esophageal cancer group, 30 patients accepted neoadjuvant chemotherapy, 25 patients accepted adjuvant chemotherapy, and 21 patients accepted both. Six patients received postoperative radiation. Four patients underwent exploratory surgery alone, and 37 cases underwent radical surgery and cervical anastomosis. One case died during the perioperative period. The 1-, 3-, 5- and 8-year survival rates were 96.8%, 52.6%, 35.1%, and 35.1% in the 36 patients with cervical esophageal cancer who underwent radical surgery, and were 85.0%, 54.3%, 45.0%, and 36.7% respectively in the 457 non-cervical esophageal cancer patients. There was no significant difference between the cervical group and non-cervical group(P=0.91).

CONCLUSIONCervical esophageal cancer should be treated in a multidisciplinary approach to obtain satisfactory long-term outcomes.

Combined Modality Therapy ; Esophageal Neoplasms ; surgery ; Esophagectomy ; methods ; Female ; Follow-Up Studies ; Humans ; Larynx ; surgery ; Male ; Middle Aged ; Pharynx ; surgery ; Retrospective Studies ; Treatment Outcome

BACKGROUNDPulmonary capillary hemangiomatosis (PCH) is a rare disease and no Chinese case has been reported yet. The disease is often misdiagnosed and its clinical characteristics are incompletely described. The aim of this study was to describe two Chinese cases and to clarify the clinical and radiographic parameters of patients with PCH.

METHODSTwo PCH cases were presented and other cases were searched from the English literature. All available clinical and radiographic data were collected from 62 literature reported PCH cases. A pooled analysis of total 64 cases was made.

RESULTSDyspnea and hemoptysis were the most common clinical symptoms of PCH. Pulmonary hypertension (PH) was found in 78% of the reported cases. PCH typically showed characteristic diffuse or patchy ground-glass opacities (GGOs) and/or multiple ill-defined centrilobular nodules in the computed tomography.

CONCLUSIONSThe diagnosis of PCH requires a high clinical suspicion. However, both clinical presentations and radiographic studies often provide clues to the diagnosis, which may prompt early lung biopsy for a definite diagnosis.

Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Female ; Hemangioma, Capillary ; complications ; diagnosis ; Humans ; Lung Neoplasms ; complications ; diagnosis ; Male ; Middle Aged ; Tomography, X-Ray Computed

OBJECTIVETo investigate the effects of X-ray exposure on the release of soluble tumor necrosis factor receptor-p75 (sTNFR-p75) in hepatocellular carcinoma HepG2 cells in vitro.

METHODSEnzyme-linked immunosorbent assay (ELISA) was used to examine the levels of sTNFR-p75 in the supernatants of HepG2 cells before and after X-ray exposure. The cell apoptosis was analyzed by flow cytometry and transmission electron microscope(TEM), and the morphological changes of the cells were examined under optical microscope and transmission electron microscope(TEM).

RESULTSX-ray exposure of the cells resulted in a strong increase of cell apoptosis (P<0.05) and sTNFR-p75 production in the cells as compared with the those before the exposure (P<0.01). Optical microscopy revealed apoptotic changes of HepG2 cell after the exposure, shown as cell shrinkage, spherical cell morphology, cytoplasmic and nuclear condensation. Apoptotic bodies were detected by TEM.

CONCLUSIONX-ray exposure induces HepG2 cells apoptosis by inhibiting the release of sTNFR-p75 into the supernatant.

Animals ; Apoptosis ; radiation effects ; Carcinoma, Hepatocellular ; pathology ; secretion ; Cell Line, Tumor ; Culture Media, Conditioned ; chemistry ; metabolism ; radiation effects ; Humans ; Liver Neoplasms ; pathology ; secretion ; Microscopy ; Receptors, Tumor Necrosis Factor, Type II ; biosynthesis ; chemistry ; secretion ; Solubility ; X-Rays

OBJECTIVETo evaluate ultrasonography in the diagnosis and differential diagnosis of testicular tumor.

METHODSUltrasound findings and post-operation pathological results were retrospectively studied in 172 men with testicular mass 1998 to 2005.

RESULTSOf the total number, 50 cases were testicular hematoma, 13 testicular cyst, 26 testicular inflammatory node, 25 testicular tuberculosis and 58 testicular tumor. Among 59 testicular tumor cases, 50 were germ cell tumor (including 41 cases of seminoma and 9 cases of nonseminoma germ cell tumor), 6 were non-germ cell tumor and 3 were secondary tumor. The sonographic features of typical seminoma, teratomas, epidemic cyst, interstitial cell tumor and malignant lymphoma were obvious.

CONCLUSIONUltrasonography, contributive to the preliminary diagnosis and differential diagnosis of testicular tumor and capable of evidence for further treatment, can be the first choice in medical imaging for the diagnosis of testicular tumors.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; Diagnosis, Differential ; Endodermal Sinus Tumor ; diagnostic imaging ; Hematoma ; diagnostic imaging ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Seminoma ; diagnostic imaging ; Teratoma ; diagnostic imaging ; Testicular Diseases ; surgery ; Testicular Neoplasms ; diagnostic imaging ; Ultrasonography

Adult ; Aged ; Female ; Genotype ; Hepatitis B ; epidemiology ; genetics ; virology ; Hepatitis B virus ; Humans ; Male ; Middle Aged ; Molecular Epidemiology ; Renal Dialysis

Objective: The purpose of the present study was to evaluate of continuous metabolic syndrome score (cMetS) in screening metabolic syndrome (MetS) and to determine the cut-off values in a representative sample of Xinjiang population aged 15 to 18 years old. Methods: A stratified cluster sampling was used to select participants aged 15-18 years from 13 cities in Xinjiang. cMetS was calculated by summing up the Zscores of standardized waist circumference, mean arterial pressure, high-density lipoprotein, triglyceride, and fasting blood glucose by age and gender. Results: Totally 16.3% of subjects were overweight, and 5.2% were obese. The proportion of overweight and obesity in males was significantly higher than that in females (18.1% vs 13.8%)(6.0% vs. 4.1%)(χ2=15.36，7.89，P<0.05). The prevalence of total MetS was 6.1%, with 6.6% and 5.4% for men and women, respectively. There was a correlation between cMetS and MetS components, and the average cMetS value increased with increasing MetS component(P<0.05). The total cut-off value of cMetS was 0.99 (sensitivity 68.0%, specificity 80.7%), and the area under the ROC curve was 84.9%. The cMetS scores for boys and girls were 0.80 and 1.48, respectively. Conclusion Compared with MetS, cMetS shows more accuracy in screening MetS among youth aged 15-18 years in both gender.