Conventional diagnostic methods used for pathologic nipple discharge (PND) include color ultrasound, mammary mo-lybdenum target X-ray radiography (mammography), nipple cytologic smears, and ductography. Diagnosis of PND through inspection yields indirect signs and has low positive rate. Fiberoptic ductoscopy (FDS) allows direct visualization of intra-ductal lesions, evaluates etiology of PND, and accurately locates intraductal lesions through wire marking. FDS is a valuable test for the early diagnosis of breast cancer and can help identify appropriate location for surgical excision. Interventional treatment for ductal ectasia and inflamma-tion is also efficient. Our study discusses FDS as a novel diagnosis and treatment method for PND patients.

Diabetes mellitus increases the risk of breast cancer and affects the prognosis of breast cancer patients. Metformin, an anti-diabetic drug, decreases blood glucose level and has a role in suppressing various cancers. In addition, metformin has a unique in-hibitory effect on breast cancer, i.e., it can inhibit breast cancer cells in vivo and in vitro. Moreover, metformin exerts its anti-tumor ef-fect on epidermal growth factor receptor 2 (HER-2) positive and monoclonal antibody trastuzumab-resistant breast cancer cell lines, breast cancer stem cells, and triple negative breast cancer cells. Metformin can reduce the risk of the breast cancer in patients with dia-betes, lower histologic grade, and increase expression of estrogen and progesterone receptors. Furthermore, metformin has certain effect on neo-adjuvant chemotherapy for breast cancer. This review aims to clarify the mechanism of metformin in restraining breast cancer based on basic and clinical study results.

Using the Gram-positive Staphylococcus aureus as the indictor bacterium,fourteen antibacterial strains were initially obtained by the bilayer-media screening method from the raw milk samples,and one isolate was found to exhibit the higher antibacterial activity against the indicator. This isolate was further studied on its individual and cultural morphology features,partial physiological and biochemical reaction activities,G+C content,the sequence features of the 16S rDNA and the species-specific N-acetylmuraminidase gene(acmA) ,consequently,it was identified as the Lactococcus lactis subsp. lactis strain,named as MB191. An evaluation of the antimicrobial spectra of MB191 was subsequently performed,it showed the remarkable activities against not only the tested Gram-positive bacteria,but also several Gram-negative bacteria including Pseudomonas syringae and P. fluorescens,as well as the yeast Debaryomyces hansenii,which was a distinctive feature that was not reported prior to this study.

This is to report the screening, extracting and validating antitumor components and compounds from Stellera chamaejasme L. under the case of discrete distribution of active data. In this work, different components from Stellera chamaejasme L. were collected by HPD macroporous resin and polyamide resin column, and their antitumor activity on A549 were tested by MTT assay. Activity results indicate that activity of components at 30-39 min is more potent than that of Stellera chamaejasme L. extract, and the activity of components at 33.97 min is equivalent to positive drug, cis-platinum at 100 microg x mL(-1), but with totally different mode of action. Under the case of discrete activity, the weight analysis is capable of screening active components and compounds from natural products.
Antineoplastic Agents, Phytogenic ; pharmacology ; Cell Line, Tumor ; Drug Screening Assays, Antitumor ; Humans ; Thymelaeaceae ; chemistry

Objective To evaluate the performance of domestic matrix-assisted laser desorption/ionization time-of-flight mass spectrometry system Clin-TOF-Ⅱ MS with BioExplorer V2.3 database ( Clin-TOF MS system) on gram-negative bacteria identification.Methods This was a methodological comparison study.A total of 1 025 gram-negative strains of 32 genus, 56 species or species complex were included in this study from 1999 to 2000 and 2014 to 2016 in Peking Union Medical College Hospital.The Bruker Biotyper MS system ( Bruker MS system ) , Bruker Autoflex Speed with Biotyper v 3.1 database were used as control.Identification by both MALDI-TOF MS systems were parallel conducted by direct smear method.The 16S rDNA sequencing based identification was performed when either MALDI-TOF MS system gave“unbelievable result” or results from two systems were not consistent.Results Amongst the isolates studied, 98.05% (1 005/1 025) was correctly identified to species or species complex level by Clin-TOF MS system.Comparatively, 99.22%(1 017/1 025) was correctly identified by Bruker MS system.There were 17 isolates just identified to genus level and 2 isolates were “no identification” by Clin-TOF MS system, meanwhile 1 Pseudomonas monteilii misidentified as P.putida.There were only two 2 isolates identified to genus level and 3 isolates were“no identification” by Bruker MS system.But it misidentified all 3 Aeromonas hydrophila (2 isolates as A.caviae and 1 isolate as A.media).It′s noted that both MS systems identified 1 Chryseobacterium gleum and 1 C. bernardetii to genus level.Conclusion The identification capability of domestic Clin-TOF MS system was good on gram-negative bacteria.

Twelve compounds were isolated from the aerial parts of Achillea alpina by column chromatographies on silica gel, Sephadex LH-20, and semi-preparative HPLC. The structures were elucidated on the basis of spectral analysis. The compounds were identified as pellitorine(1), 8,9-dehydropellitorine(2), (E,E)-2,4-undecadien-8, 10-diynoic acid isobutylamide(3), (E,E)-2,4-tetradecadien-8,10-diynoic acid isobutylamide(4),sintenin(5), 4',5,7,8-tetramethoxyflavone(6), chrysoplenetin(7), formononetin(8), aurantiamide(9), asperglaucide(10), artemetin(11), and eupatorin(12). compounds 1-5 were isolated from this plant for the first time, and compounds 6-10 were isolated from the genus Achillea for the first time.
Achillea ; chemistry ; Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Molecular Structure ; Spectrometry, Mass, Electrospray Ionization

A high-product superoxide dismutase(SOD)bacterial strain was first obtained from the soil around the warm spring of Changbai Mountain,which is alkaline-resistant.The nature analysis by the inhibition of H2O2 and chloroform-ethanol indicated that the SOD was Mn-SOD.It belongs to bacillus genus by the modal character,physiological and biochemical character.The phylogenetic analyses based on 16SrDNA sequence indicated that the strain 110-2 was closed to Bacillus sp.MO6 with 100% identity and 99% with Bacillus licheniformis.According to the sodA sequence of Bacillus licheniformis and conservative regions of many kinds of bacillus,which were published in GenBank,two pairs of primers were designed and the complete sequence of Mn-SOD(600bp)and the core fragment(430bp)were amplified by PCR techniques.The recombinant plasmid pMD18-SOD was built successfully.

Abstract] Objective To investigate the in vivo therapeutic effects of an extract of herb medi-cines, YiGanQingDuKeLi, in combination with adefovir dipivoxil (ADV) on the rebound of duck hepatitis B virus ( DHBV) multiplication after withdrawal of ADV treatment.Methods Peking ducks were infected with DHBV positive serum samples for 7 days and then screened by SYBR Green real-time PCR.The ducks positive for DHBV were randomly divided into five groups including the model control group, the ADV treat-ment group, the herb treatment group, the high-dose combination therapy group and the low-dose combina-tion therapy group.The ducks in the ADV treatment and the herb treatment groups were respectively treated with distilled water and YiGanQingDuKeLi (1.2 g/ml) for 14 days after the treatment of ADV (0.25 mg/ml) for 21 days.The ducks in the high-dose group were treated with YiGanQingDuKeLi (1.2 g/ml) for 14 days after the combined treatment with high-dose YiGanQingDuKeLi (1.2 g/ml) and ADV (0.25 mg/ml) for 21 days.The ducks in the low-dose group were treated with YiGanQingDuKeLi (0.6 g/ml) for 14 days after the combined treatment with YiGanQingDuKeLi (0.6 g/ml) and ADV (0.125 mg/ml) for 21 days.Blood samples were collected from each duck via leg vein after 0, 7, 14 and 21 days of drug adminis-tration and after 7 and 14 days of drug withdrawal.The levels of DHBV-DNA, alanine aminotransferase ( ALT) and aspartate aminotransferase ( AST) in blood serum samples were detected.Results Compared with the model group, the levels of DHBV-DNA, ALT and AST in ducks from the herb treatment group and combined treatment groups were decreased before the discontinuation of ADV treatment ( P<0.05 or P<0.01).Moreover, the titers of DHBV-DNA in ducks treated with high doses of drugs were much lower than those from ADV treatment group.The levels of DHBV-DNA, ALT and AST in ducks treated with herb medi-cine and high doses of drugs remained at relatively low levels after the cessation of ADV treatment, but re-bounded significantly in ducks with ADV treatment.The levels of DHBV-DNA and ALT rebounded slightly in ducks treated with low doses of drugs as compared with those of ADV treatment group ( P<0.01 or P<0.05).Conclusion The treatment of YiGanQingDuKeLi in combination with ADV could inhibit not only the in vivo replication of DHBV, but also the rebound of DHBV multiplication after ADV withdrawal.

OBJECTIVETo observe root surfaces and analyze the mineral contents in cementum of patients with rapidly progressive periodontitis (RPP).

METHODSTen teeth were selected from RPP patients, adult periodontitis (AP) patients and healthy (H) control subjects respectively, and prepared for scanning electron microscopy (JSM-35C). The energy-dispersive X-ray analysis was used to measure the mineral contents in cementum (Ca, P, Mg).

RESULTSThe root surfaces of RPP teeth were similar to that of AP teeth. Ca: 64.60% +/- 2.29% vs 63.54% +/- 2.97%, P > 0.05; P: 32.54% +/- 1.29% vs 32.97% +/- 2.40%, P > 0.05; Mg: 2.86% +/- 1.29% vs 3.48% +/- 1.02%, P > 0.05; Ca/P: 2.00 +/- 0.17 vs 1.95 +/- 0.25, P > 0.05. There were no differences in Ca, P, Mg contents and Ca/P ratio between RPP teeth and AP teeth.

CONCLUSIONThere may not be cementoplasia in a part of RPP teeth.

Adult ; Dental Cementum ; chemistry ; ultrastructure ; Humans ; Microscopy, Electron, Scanning ; Periodontitis ; pathology ; Tooth Root ; chemistry ; ultrastructure

OBJECTIVETo investigate the relationship between degree of abnormal deeper lateral femoral notch between anterior cruciate ligament tear.

METHODSThe radiograph and MRI image material of 16 patients with anterior cruciate ligament injury from January 2013 to November 2013 were reviewed including 14 males and 2 females with an average age of 28.3 years old ranging from 18 to 52 years. Eleven cases was on right side and 5 on left. Survey tool of PASC imaging system was used to measure the depth of lateral femoral notch in patients with abnormal indicated by lateral X-ray view or sagittal view of MRI in knee joint,while clinical data,physical examination,image material in arthroscopy of these patients were retrospective researched.

RESULTSFour patients had an abnormal lateral femoral notch with the depth of 2 mm on lateral X-ray and sagittal MRI, while positive anterior drawer sign and Lachman test as well as anterior cruciate ligament tears on MRI, and completed tears were comfirmed on the operation of arthroscopy. Two patients without abnomal lateral femoral notch on lateral view of X-ray while with the depth of 1 mm on sagittal view of MRI were also coupled with positive anterior drawer sign and Lachman test as well as anterior cruciate ligament tears on MRI, and one of them were comfirmed completed anterior cruciate ligament tears on the arthroscopy operation and completed tear could not comfirmed on another one because of disagreed with arthroscopy operation.

CONCLUSIONThere appears to be an association between abnormal lateral femoral notch on lateral view of knee with anterior cruciate ligament tears. An abnormal deeper lateral femoral notch is an indirect evidence for anterior cruciate ligament tears.

Adult ; Anterior Cruciate Ligament ; surgery ; Anterior Cruciate Ligament Injuries ; Female ; Femur ; pathology ; Humans ; Magnetic Resonance Imaging ; Male ; Middle Aged