OBJECTIVE Paeoniflorin (PF) and albiflorin (AF) are the major active components of total peony glucosides(TPG)from Paeonia lactiflora Pal,which have many biological activities such as anti-inflammatory, antioxidation and anti-hypertension effects. The drug-drug pharmacokinetic interaction among PF,AF and TPG,the pharmacokinetic comparisons of AF between hypoxia and normoxia,the transport of AF cross the blood-brain barrier cell model and the transport of AF/PF/TPG cross Caco-2 cell model were investigated.METHODS A highly sensitive and rapid UPLC-MS method with multiple-reaction monitoring(MRM)scanning via electrospray ionization(ESI)source operating both in the positive and negative ionization mode was successfully developed and validated for simultaneous quantitation of PF and AF in rat plasma after an oral administration of PF,AF and TPG. RESULTS The validated and developed UPLC-MS/MS method was successfully applied to simultaneously determine the AF and PF concentration in rat plasma and investigate pharmacokinetic interactions after a single intragastrical ad-ministration of PF,AF,co-administration of PF with AF and TPG,respectively.The elimination of both PF co-administered with AF and PF in TPG were slower than those for PF alone and the distribution in the tissues was wider.The combination of PF with AF or TPG could significantly increase the values of the AUC, MRT and t1/2of the drug PF, and reduce the values of CL of PF. From a comparison of the main pharmacokinetic parameters among AF alone, AF combined with PF and AF in TPG, the values of the MRT and t1/2of AF in TPG were greater than that of AF alone,and there were statistically signifi-cant differences in these parameters(P<0.05,P<0.01).It was also noticed that AUC and Cmaxof PF in hypoxia rats were significantly decreased compared with that of normaxia rats, suggesting that there was a decreased exposure of PF in rats under hypoxia. The multiple active components in TPG may lead to DDIs between some P-gp substrates. CONCLUSION The clinical performance of total peony glucosides would be better than that of single constitute. The outcomes of the study are expected to serve as a basis for development of clinical guidelines on total peony glucosides usage.

The present study is to establish the fingerprints for the quality evaluation of Ilicis Pubescentis Radix by HPLC-UV. The chromatographic conditions were defined as Phenomenex Luna C₁₈(4.6 mm × 250 mm, 5 μm). Mobile phase was acetonitrile-0.05% phosphoric acid in gradient elution, and the flow rate was 0.8 mL·min⁻¹.Column temperature was 30 °C and the injection volume was 10 μL．The detection wavelength was 210 nm. According to the similarity evaluation, the chemometric method was used to assess the quality of Ilicis Pubescentis Radix. The fingerprints of 16 batches of Ilicis Pubescentis Radix were established. There were 29 common peaks in the fingerprints and 12 common peaks were identified by reference substances. Fingerprints similarity of samples were greater than 0.92. The samples were classified into three groups by hierarchical cluster analysis combined with principal component analysis (PCA) and orthogonal partial least squares-discriminant analysis (OPLS-DA), and seven components were the main markers that cause differences in the different batches of samples. By comparing the on-line UV spectra of chromatographic peaks, the chromatographic fingerprint was divided into three regions: region A showed seventeen main peaks (mainly lignans and phenolic acids); region B showed eight main peaks, which were proved as saponins; region C showed four main peaks, which were proved as other components. The established HPLC-UV fingerprint is highly specific, and can be used to evaluate the quality consistency of different batches of Ilicis Pubescentis Radix.

OBJECTIVETo investigate the diagnosis and treatment of neuroendocrine neoplasm (NEN) in the digestive system.

METHODSClinical data of 29 patients with NEN from January 2000 to December 2012 in The First Affiliated Hospital of Dalian Medical University were analyzed retrospectively and the prognosis was evaluated according to the new WHO classification.

RESULTSThere were 19 males and 10 females and the average age was 46.5 years. All the patients had no clinical manifestations of carcinoid syndrome, and they all received surgical treatment. Two cases were gastric neuroendocrine carcinoma(NEC), who received radical total gastrectomy and distal gastric resection respectively. Three cases had neoplasm in the duodenum, including 2 NEC and 1 neuroendocrine tumor(NET), and they all underwent Whipple's procedure. Two cases were small intestine NEC, who received partial small intestine resection. Three cases had neoplasm in the appendix, including 1 NEC treated with right hemicolectomy and 2 NET with appendectomy. One case was ascending colon NEC, who received right hemicolectomy. Eighteen cases had neoplasm in the rectum, including 4 NEC treated with low anterior resection and abdominoperineal resection respectively, and 14 cases of NET underwent low anterior resection, local resection, and endoscopic resection respectively. The 1- and 3- year survival rates of 13 NEC cases were 38.4% and 7.7% respectively. The 5-year survival rate of 16 NET cases was 81.3%.

CONCLUSIONSNEN of digestive system is located mainly in the rectum and the clinical symptom is unspecific. Radical resection of NEN is the preferred treatment. The prognosis of NEC is poor, and that of NET is better.

Digestive System Surgical Procedures ; Female ; Gastrointestinal Neoplasms ; diagnosis ; surgery ; Humans ; Male ; Middle Aged ; Neuroendocrine Tumors ; diagnosis ; surgery ; Prognosis ; Retrospective Studies ; Survival Rate

Anthracycline-Taxane chemotherapy is widely used in neoadjuvant treatment for breast cancers. However, there is limited data reported in patients with triple negative breast cancer (TNBC). Here, we evaluated the pathologic responses and survival of neoadjuvant epirubicin and taxanes chemotherapy in patients with locally advanced TNBC to provide some useful information for clinical practice. A total of 43 patients with locally advanced TNBC were enrolled in this study. Patients were administered with epirubicin 75 mg/m(2) plus paclitaxel 175 mg/m(2) or docetaxel 75 mg/m(2) every 3 weeks for at least 2 cycles. The primary endpoint was pathologic complete response (pCR), which was defined as no residual invasive cancer, or only carcinoma in situ in both the excised breast and axillary lymph node, while relapse-free survival (RFS) and overall survival (OS) were secondary endpoints. Thirty-nine (90.7%) patients were at clinical stages IIB-IIIC. Thirty-seven (86%) completed 4-6 cycles of preoperative chemotherapy, and objective response rate (ORR) was 81.4% (35/43). Forty-two patients underwent radical surgery subsequently. The pCR rate was 14.3% (6/42). The most common adverse events in neoadjuvant chemotherapy were nausea/vomiting (88.4%, 38/43) and neutropenia (88.4%). After a median follow-up period of 34.0 months, 3-year RFS and OS rate was 53.6% and 80.1%, respectively. All events of recurrence and death occurred in non-pCR patients, in whom the 3-year RFS and OS rates were 44.3% and 76.6%, respectively. This study suggest that neoadjuvant chemotherapy with epirubicin plus taxanes has a relatively low pCR rate and high early recurrence risk in locally advanced TNBC, which indicates the necessity for more efficacious treatment. Further study is needed to validate these results.
Adult ; Aged ; Antineoplastic Combined Chemotherapy Protocols ; administration & dosage ; Chemoradiotherapy, Adjuvant ; methods ; Disease-Free Survival ; Epirubicin ; administration & dosage ; Female ; Humans ; Male ; Middle Aged ; Neoadjuvant Therapy ; methods ; Neoplasm Recurrence, Local ; pathology ; prevention & control ; Neoplasm, Residual ; pathology ; prevention & control ; Paclitaxel ; administration & dosage ; Taxoids ; administration & dosage ; Treatment Failure ; Treatment Outcome ; Triple Negative Breast Neoplasms ; drug therapy ; pathology

OBJECTIVETo assess and compare the Human Papillomavirus (HPV) detection efficiency and the potential clinical utility of PCR sequencing-based technology.

METHODSFour HPV consensus primer sets (GP5+/6+, MGP, MY09/11, and PGMY09/11) were used in order to amplify a broad spectrum of HPV types for HPV infection in 325 cervical samples and the PCR products were sequenced afterwards for the HPV genotyping.

RESULTSThe HPV-positive rate was 75.4%, of which 35.5% harbored more than one HPV genotype. A total of 36 different genotypes was found, with HPV 16 (24.1%) being the most prevalent, followed by HPV 58 (13.3%) and HPV 52 (9.6%). There were substantial to almost perfect agreements between different primer sets regarding HPV detection efficiency, with the kappa value varying from 0.751 to 0.925, MGP, and PGMY09/11 were the most effective in detecting multiple infections (P < 0.001). With each of the primer sets, a board range of HPV types could be identified, though there were several differences for a few genotypes.

CONCLUSIONThe substantial agreement between PCR-sequencing and HC2 for the detection of high-risk HPV (kappa=0.761) indicated that PCR-sequencing is also suitable for routine HPV screening.

Adult ; Aged ; Alphapapillomavirus ; genetics ; isolation & purification ; Female ; Genotype ; Humans ; Middle Aged ; Papillomavirus Infections ; virology ; Polymerase Chain Reaction ; methods ; Young Adult

Objective To study the effect of passive motion from lower extremity on electromyography (EMG) activity of major muscles when the back under head down tilting state. Methods Thirty healthy subjects were selected. The EMGs of erector spinal and trapezius muscles were recorded and analyzed when human body was under head-down tilting at angel of 0°, 10°, 20° and 27° in static mode, respectively, in sway mode (along the axis of Z with frequencies of 120 and 140/min， respectively) and in vibration mode (along the axis of Y with frequency of 680/min) with the help of multifunctional test bed. Results In the static mode, the median frequency (MF) decreased with the increase of head-down titling angle; in the sway mode, the MF at each of 4 head-down tilting angles was smaller than that in the static mode. When the frequency was 120/min, the MF decreased with head-down tilting angle increasing, but when the frequency reached 140/min, the variation of MF became irregular. In the vibration mode, the MF increased with the increase of head-down tilting angle and was larger than that in the static mode. Conclusions In the static mode, the muscle fatigue increased with the head down tilting angle increasing; in the vibration mode, smaller head-down tilting angle should be selected to achieve better treatment effect; but in the sway mode, larger head-down tilting angle would be better, and the sway frequency should be set lower than 120/min to avoid potential damage due to excessive muscle fatigue.