Derris eriocarpa, a traditional Chinese medicine belonging to the family of Leguminosae, is widely distributed mainly over Yunnan, Guangxi and Guizhou of China. Modern pharmacological researches on this herb showed that it had extensive bioactivities, such as promoting urination, removing dampness and cough and reducing inspissated mucus and other biological activities. The extensive studies on the chemical constituents of this plant have resulted in the isolation of triterpenoids, steroids, fatty acid and others, but the flavone compounds haven't reported before. In our further research on the ethyl acetate of this plant, nine flavone compounds were obtained by column chromatography on silica gel, Sephadex LH-20, semi-prep HPLC, polyamide column chromatography and recrystallization for separation and purification. The structures were determined on the basis of extensive spectroscopic analysis, including MS, NMR experiments and comparison with spectroscopic data in the literature, respectively, as diosmetin (1), 3, 3'-di-O-methylquercetin (2), afromosin (3), 6, 3'-dihydroxy-7, 4'-dimethoxyisoflavone (4), odoratin (5), 7, 3'-dihydroxy-8, 4'-dimethoxyisoflavone (6), 6, 4'-dihydroxy-7, 3'-dimethoxyisoflavone (7), 5, 7, 4'-trihydroxy-3, 3', 5'-trimethoxyflavone (8), and alpinumisoflavone (9). All these compounds were isolated from Derris eriocarpa How for the first time. And the in vitro assays showed that compound 2 possessed moderate inhibitory activity against human cancer cells K562 and HEL.
Derris ; chemistry ; Flavonoids ; chemistry ; isolation & purification ; pharmacology ; Humans ; K562 Cells

OBJECTIVETo investigate the polymorphism of DXYS267 locus in China Han population and find the application and characters of its Y-specific single nucleotide substitutions.

METHODSThe locus was analyzed by PCR and PAGE in silver-staining. The Y-specific STR was amplified with newly designed primers according to the Y-specific single nucleotide substitutions.

RESULTSSix alleles were detected in Han population in Wuhan. Exact tests demonstrated that genotype frequencies did not deviate from Hardy-Weinberg equilibrium. Heterozygosity of DXYS267 was 0.6706, discrimination power (DP) was 0.8433, and the probability of paternity exclusion (PE) was 0.5957. The Y-specific STR of DXYS267 was successfully amplified with the new primer. The 4 alleles for Y-STR were detected with haplotype diversity (HD) 0.6372.

CONCLUSIONThe DXYS267 locus is appropriate for individual identification and paternity testing. The new primer is useful for individual and paternity testing involving brothers and mixed stains.

Base Sequence ; Chromosomes, Human, X ; genetics ; Chromosomes, Human, Y ; genetics ; Female ; Gene Frequency ; Genotype ; Humans ; Male ; Molecular Sequence Data ; Polymerase Chain Reaction ; Polymorphism, Single Nucleotide ; Tandem Repeat Sequences ; genetics

OBJECTIVETo analyze stress distribution in alveolar bone around implants of implant supported overdentures (ISO) with linear occlusion and with anatomic occlusion at lateral mandibular position, and to justify the possibility of decreased injurious force around implants in ISO with linear occlusion.

METHODSComputerized tomography scan and finite element analysis (FEA) were used to set up two 3-D FEA models of maxillae and mandible with severe residual ridge resorption. The mucosa, linear and anatomic occlusal ISO with bar attachments, and two implants inserted between mandibular foramina were also established in the models. With the condition of imitating the loading of masseter muscles, these models were loaded to simulate the stress distributions in alveolar bone around implants under ISO at lateral occlusion position.

RESULTSAt lateral occlusion, the stress distributions in alveolar bone around implants under ISO with anatomic occlusion were mainly on the lingual and distal sides of the working side implants. However, stress distributions under ISO with linear occlusion were on the distal sides of bilateral implants. Both the stress peaks of ISOs with linear occlusion and with the anatomic one appeared in the working side. In anatomic occlusion model, sigma(z): -6.47 MPa and 6.81 MPa, sigma(1): -4.20 MPa and 7.20 MPa (negative value: compressive stress, positive value: tensile stress); in linear occlusion model, sigma(z): -4.86 MPa and 3.04 MPa, sigma(1): -3.48 MPa and 5.33 MPa.

CONCLUSIONSAt lateral occlusion, when comparing the ISO with two different occlusion schemes, stress peak in alveolar bone around implants in the linear occlusion model was lower than that in the anatomic occlusion model at equal loading situation. Stress in the alveolar bone under ISO with linear occlusion distributed more evenly than that under ISO with anatomic occlusion.

Dental Implantation ; Dental Occlusion ; Denture, Complete, Lower ; Finite Element Analysis ; Humans ; Mandible ; physiology ; Models, Anatomic ; Models, Biological ; Stress, Mechanical

OBJECTIVETo evaluate the usefulness of new microspincolumn method for the measurement of a1pha-fetoprotein variant AFP-L3 in differentiation of benign and malignant liver disease and the warming for liver cancer.

METHODSAFP-L3 was isolated by using microspincolumn coupled with lens culinaris agglutinin (LCA), AFP and AFP-L3 were determined with chemiluminescent immunoassay, the proportion of AFP-L3 levels AFP-L3(%) were calculated, and the relationship between the elevated AFP-L3(%) levels and benign and malignant liver disease was analyzed.

RESULTSThe levels of AFP-L3(%) in serum of patients with hepatocellular carcinoma was significantly higher than those in the patients with other liver diseases (P < 0.001). Taking AFP-L3(%) >or= 10% as the diagnostic criteria, the sensitivity for diagnosis of liver cancer was 90.9%.

CONCLUSIONDetection of AFP-L3 seemed to be of clinical value in diagnosis and differential diagnosis of hepatocellular carcinoma; it may be especially important for identifying patients with hepatocellular carcinoma whose a1pha-fetoprotein level is low.

Adult ; Aged ; Carcinoma, Hepatocellular ; blood ; diagnosis ; Diagnosis, Differential ; Female ; Hepatitis, Chronic ; blood ; diagnosis ; Humans ; Immunoassay ; methods ; Liver Cirrhosis ; blood ; diagnosis ; Liver Neoplasms ; blood ; diagnosis ; Luminescent Measurements ; methods ; Male ; Middle Aged ; Sensitivity and Specificity ; Young Adult ; alpha-Fetoproteins ; analysis

BACKGROUNDThe rocking and instability of a loaded complete denture (CD) during lateral excursion reduce the bearing area under the denture base, causing localized high stress concentrations. This can lead to mucosal tenderness, ulceration, and alveolar bone resorption, and the linear occlusion design was to decrease the lateral force exerted on the denture and to ensure denture stability. But it is not known how the bearing areas of linear occlusal CDs (LOCDs) and anatomic occlusal CDs (AOCDs) differ. The purpose of this study was to analyze and compare the distributions of the high and low vertical stress-bearing areas in the mandibular alveolar mucosa under LOCDs and AOCDs at lateral excursion.

METHODSComputerized tomography (CT) and finite element analysis were used to establish three-dimensional models of an edentulous maxilla and mandible with severe residual ridge resorption. These models were composed of maxillary and mandibular bone structure, mucosa, and the LOCD or AOCD. Lateral excursion movements of the mandible were simulated and the vertical stress-bearing areas in the mucosa under both mandibular CDs were analyzed using ANSYS 7.0.

RESULTSOn the working side, the high stress-bearing (-0.07 to -0.1 MPa) area under the LOCD during lateral excursion was smaller than that under the AOCD, while the medium stress-bearing (-0.03 to -0.07 MPa) area under the LOCD was 1.33-fold that under the AOCD. The medium stress-bearing area on the non-working side under the LOCD was 2.4-fold that under the AOCD. Therefore, the overall medium vertical stress-bearing area under the LOCD was 20% larger than that under the AOCD.

CONCLUSIONSDuring lateral excursion, the medium vertical stress-bearing area under a mandibular LOCD was larger and the high vertical stress-bearing area was smaller than that under an AOCD. Thus, the vertical stress under the LOCD was distributed more evenly and over a wider area than that under the AOCD, thereby improving denture stability.

Aged ; Computer Simulation ; Dental Occlusion ; Dental Stress Analysis ; Denture, Complete ; Female ; Finite Element Analysis ; Humans ; Mandible ; physiology ; Stress, Mechanical

OBJECTIVETo understand the epidemiologic characters of influenza in China from 2001 to 2003.

METHODSData of outpatient visits for influenza-like illness (ILI) each week and outbreaks of influenza were collected through National Influenza Surveillance Network, which includes 11 northern and 12 southern provinces of China. Samples were collected in the outpatients of ILI from 2001 to 2003 and influenza viruses were isolated and identified.

RESULTSEpidemiological and laboratory surveillance data showed that the annual seasonality of influenza epidemic was clear. The peak of epidemic of influenza in northern areas was in winter season, during December to January. However, there were three peaks distributed to Spring (Apr.-May.), Summer (Jun.-Aug.) and Winter (Dec.-Jan.) seasons in the southern areas. In the peak months, the number of ILI visits per day and per surveillance hospital had increased two-fold in northern and by 37% in southern China. The baseline of percentages for ILI visits, which calculated with 75th percentiles (P75), was 13.68% in the north and 13.08% in southern China. The age distribution of ILI was related to seasonal types of influenza. When the predominated strain of the season was influenza B virus, the ratio of the ILI visits younger than 15 year-old, increased obviously. When the predominated stains became influenza A virus, the ratio of patient visits for ILI aged over 25 year-old increased. Of 63 outbreaks of influenza, 92% of them occurred at primary and middle schools and usually occurred in May (32%). The type of strains usually changed around June.

CONCLUSIONThe quality of national influenza surveillance system is reliable since it was matched between percentages of ILI visits and rates of influenza virus isolation. The different epidemiologic characteristics in north and south of China was noticed. Peak in spring was shown in southern area and which called for more analysis. The change of the types of strains in the outbreaks during April to June in the southern China could provide data for better understanding on the trend of epidemics in the next season.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; China ; epidemiology ; Female ; Humans ; Infant ; Influenza A virus ; Influenza B virus ; Influenza Vaccines ; administration & dosage ; Influenza, Human ; epidemiology ; prevention & control ; virology ; Male ; Middle Aged ; Population Surveillance ; Seasons ; Vaccination

OBJECTIVETo investigate the effects of epileptogenesis and low frequency stimulation at epileptic focus on spontaneous neuropathic pain in rats.

METHODSBipolar stimulating electrodes were implanted in the amygdala and current with constant intensity was applied to evoke kindling-induced seizures. In partial and generalized stages of seizure acquisition, neuroma model of spontaneous neuropathic pain was prepared by completely transection of the left sciatic and saphenous nerves of rats. Autotomy behavior was scored daily until d 63 postoperatively. Rats were divided into 5 groups: Control (n=7), rats with partial seizures (1-3 stages, n=5), rats with generalized seizures (4-5 stages, n=7), rats with partial seizures and low frequency stimulation(n=4), rats with generalized seizures and low frequency stimulation(n=4). Low frequency stimulation was applied to the amygdala, the epileptic focus for 21 d from the d 2 after nerve transection.

RESULTSAutotomy level in rats with partial seizures was significantly lower than that in controls. The autotomy scores during postoperative d 40 ≊63 were significantly lower than those of controls, the area under the progression curve of autotomy behavior was decreased from 308.2 ±51.57 to 45.80 ±24.64, the onset day of autotomy was postponed by 32 d and none of the animals with partial seizures showed high autotomy, while 71.4 % of controls showed that on d 63 postoperatively. Rats with generalized seizures showed autotomy similar to controls, except that the onset day was postponed by 16 d. Autotomy behavior in rats receiving low frequency stimulation of the amygdala was not different from that in controls.

CONCLUSIONFocal seizures can lower sensitivity to spontaneous neuropathic pain in rats, while low frequency stimulation applied to the focus can abolish such effect.

Animals ; Disease Models, Animal ; Electric Stimulation ; adverse effects ; Epilepsy ; complications ; etiology ; Kindling, Neurologic ; Male ; Neuralgia ; etiology ; Rats ; Rats, Sprague-Dawley

The objective of this study was to explore the incidence and therapeutic efficacy of cytomegalovirus (CMV) infection after allogeneic hematopoietic stem cell transplantation (allo-HSCT). The clinical data of 140 patients undergoing allo-HSCT in our department of hematology from 2010-01 to 2012-01 were retrospectively analyzed. The results showed that the incidence of CMV infection was 4.3% (48/140), the time for the first detection of positive CMV-DNA was at day 45 (33 to 68) after allo-HSCT, and the CMV quantitative range was 1.25×10(3) - 5.5×10(6). There were 2 cases of CMV-related interstitial pneumonia and 5 cases of hemorrhagic bladder inflammation. A total of 65 patients suffered from graft versus host disease (GVHD), in which 32 cases (49.2%) were accompanied with CMV infection, CMV-DNA negative in patients treated with ganciclovir, foscarnet sodium anti-CMV was at day 45 (33 to 68) with the effective rate of 100%. 12 patients with CMV infection were accompanied with transient neutropenia and thrombocytopenia. It is concluded that after allo-HSCT the CMV infection occurs frequently. The patients with GVHD have a higher incidence of CMV infection. Ganciclovir and foscarnet sodium are reliable to be used for treatment of CMV infection with fewer adverse reactions.
Adolescent ; Adult ; Child ; Child, Preschool ; Cytomegalovirus Infections ; drug therapy ; etiology ; Female ; Foscarnet ; therapeutic use ; Ganciclovir ; therapeutic use ; Graft vs Host Disease ; Hematopoietic Stem Cell Transplantation ; adverse effects ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Risk Factors ; Transplantation, Homologous ; Young Adult

Objective of this study was to evaluate the efficacy and safety of haploidentical or unrelated donor hematopoietic stem cell transplantation (HSCT) for patients with severe aplastic anemia (SAA). Twenty patients with SAA received allogeneic HSCT from haploidentical or unrelated donors (14 from haploidentical donors and 6 from unrelated donors) from November 2005 to May 2011. Conditioning regimen consisted of fludarabine (FLU), cyclophosphamide (Cy) and anti-thymocyte immunoglobulin (ATG). The patients were administrated with G-CSF-primed bone marrow and mobilized peripheral blood as grafts from haploidentical donor or only mobilized peripheral blood from the unrelated donor. The results showed that the median time of neutrophil and platelet engraftment were 14 (11 - 20) d and 17 (13 - 31) d respectively. All patients who achieved engraftment had complete hematologic recovery with complete donor chimerism, except for two patients who developed graft failure in 2 months after transplantation. Four cases developed acute grade IIGVHD. The chronic GVHD occurred in 7 of the 16 evaluable cases (6 limited, 1 extensive). 14 patients got disease-free survival with follow-up to January 2012. The disease-free survival rate was 68.9%. It is concluded that the haploidentical or unrelated donor hematopoietic stem cell transplantation may become a viable therapeutic option for severe aplastic anemia patients who lack suitable human leukocyte antigen-matched donors and fail immunosuppressive therapy.
Adolescent ; Adult ; Anemia, Aplastic ; surgery ; Child ; Child, Preschool ; Female ; Hematopoietic Stem Cell Transplantation ; methods ; Humans ; Immunosuppressive Agents ; therapeutic use ; Male ; Transplantation Conditioning ; methods ; Transplantation, Homologous ; Unrelated Donors

OBJECTIVEExplore the serum of patients with CHB of HBV large envelope protein (HBV-LHBs) trans-activation function and antiviral therapy effect relationship.

METHODS60 cases of anti-viral treatment of patients with chronic hepatitis B to take every 3 months HBVDNA, HBV-LHBs, as well as detection of hepatitis B immune markers to observe the changes in indexes.

RESULTSIncome group 60 cases of anti-virus group HBVDNA with HBV-LHBs have a higher detection rate of the consistency of the results found no statistical significance (P > 0.05), HBV-LHBs-positive rate and positive rate of HBeAg differences (chi2 = 4.08, P < 0.05). After 24 months of antiviral therapy HBV-LHBs expression always HBVDNA in 29 cases of which occurred 24 months after the negative reaction of the 20 cases, continuous positive were seven cases of non-negative. 60 cases of patients 24 months found no HBsAg seroconversion, four cases of emergence of HBeAg seroconversion.

CONCLUSION(1) detection of serum HBV-LHBs to reflect the hepatitis B virus replication with HBVDNA good correlation. (2) anti-viral treatment of dynamic observation of the process of HBV-LHBs expression can predict the effectiveness of anti-viral therapy.

Adolescent ; Adult ; Antiviral Agents ; therapeutic use ; DNA, Viral ; blood ; genetics ; Female ; Hepatitis B ; blood ; drug therapy ; virology ; Hepatitis B Antigens ; blood ; genetics ; Hepatitis B virus ; drug effects ; genetics ; isolation & purification ; physiology ; Humans ; Male ; Middle Aged ; Treatment Outcome ; Viral Envelope Proteins ; blood ; genetics ; Virus Activation ; drug effects ; Young Adult