Firstly discovered in 1980s,human immunodeficiency virus (HIV) continues to affect more and more people.However,there is no effective drug available for the therapy of HIV infection.Betulinic acid existing in various medicinal herbs and fruits exhibits multiple biological effects,especially its outstanding anti-HIV activity,which has drawn the attentions of many pharmacists.Among the derivatives of betulinic acid,some compounds exhibited inhibitory activities at the nanomolar concentration,and have entered phase Ⅱ clinical trials.This paper summarizes the current investigations on the anti-HIV activity of betulinic acid analogues,and provides valuable data for subsequent researches.

The LEAFY (LFY) homologous gene of Dendrobium moniliforme (L.) Sw. was cloned by new primers which were designed based on the conservative region of known sequences of orchid LEAFY gene. Partial LFY homologous gene was cloned by common PCR, then we got the complete LFY homologous gene Den LFY by Tail-PCR. The complete sequence of DenLFY gene was 3 575 bp which contained three exons and two introns. Using BLAST method, comparison analysis among the exon of LFY homologous gene indicted that the DenLFY gene had high identity with orchids LFY homologous, including the related fragment of PhalLFY (84%) in Phalaenopsis hybrid cultivar, LFY homologous gene in Oncidium (90%) and in other orchid (over 80%). Using MP analysis, Dendrobium is found to be the sister to Oncidium and Phalaenopsis. Homologous analysis demonstrated that the C-terminal amino acids were highly conserved. When the exons and introns were separately considered, exons and the sequence of amino acid were good markers for the function research of DenLFY gene. The second intron can be used in authentication research of Dendrobium based on the length polymorphism between Dendrobium moniliforme and Dendrobium officinale.
Amino Acid Sequence ; Base Sequence ; DNA, Plant ; genetics ; Dendrobium ; genetics ; Exons ; Introns ; Orchidaceae ; genetics ; Phylogeny ; Plant Leaves ; genetics ; Plant Proteins ; genetics ; Plants, Medicinal ; genetics ; Sequence Alignment ; Sequence Homology, Amino Acid

OBJECTIVETo retrospective study the results of arthroscopic resection of articular capsule valvular treated popliteal cysts and examined the incidence of complication.

METHODSFrom July 2007 to July 2010, 45 patients with symptomatic popliteal cysts such as knee pain and limitation of motion were treated with arthroscopic technique to resect the connecting valvular mechanism at posteromedial compartment of articular capsule. Through the posteromedial viewing portal and cyst resection working portal, resected the valvular mechanism by shaver and plasma cutter, associated intra-articular pathology was treated simultaneously. The functional outcome was evaluated by employed Rauschning and Lindgren score before the surgery and the last follow-up. By using of Wilcoxon rank sum test to statistics analyze the clinic outcome.

RESULTIn all cases, 40 patients were found the associated intra-articular pathology, the incidence was 88.9%.The intra-articular pathology was medial meniscus tear (27 cases, 60.0%), lateral meniscus tear (20 cases, 44.4%), cartilage lesion (28 cases, 62.2%), which composed with patellofemoral joint (12 cases, 26.7%),medial condyles of femur (10 cases, 22.2%),lateral condyles of femur (6 cases, 13.3%). The anterior cruciate ligment injury was found in 2 cases, the incidence was 4.4%. All the patients achieved symptoms relief postoperative, such as posterior knee discomfort and swelling after activities.The Rauschning and Lindgren score was improved 1-2 grade in average (Z = -6.092, P = 0.00). The recurrence rate was 2.2%. All the incision healed good. No major complications were encountered such as saphenous nerve, great saphenous vein, blood vessel in popliteal injury.

CONCLUSIONSArthroscopic resection of articular capsule valvular treatment of popliteal cyst and treatment of associated intra-articular pathology are effective and safe. This surgery technique has more minimally trauma and lower recurrence rate.The clinic results in short term are excellent.

Adolescent ; Adult ; Aged ; Arthroscopy ; methods ; Child ; Female ; Follow-Up Studies ; Humans ; Knee Joint ; surgery ; Male ; Middle Aged ; Popliteal Cyst ; complications ; surgery ; Retrospective Studies ; Treatment Outcome ; Young Adult

objective To analyze the characteristics of high download frequency paper of Chongqing Medical Journal. Methods The top 150 high download frequency papers published in Chongqing Medical Journal were collected from CNKI database to analyze the total download frequency, download frequency of single papers, citation frequency, single paper citation frequency, authorship, affiliations, funding, and published columns. Results For the 146 high download frequency papers, the download frequency averaged 2035 times with a citation frequency of 71 103 times, showing a low correlation between download frequency and citation frequency (r=0.250, P=0.250). In the high download frequency papers, the top 3 were published in columns of review (54.1%), original articles (21.9%), and hospital or health management (7.5%). The first authors came mainly from Chongqing Medical University and the affiliated hospitals and Third Military Medical University and its affiliated hospitals. Sixty-one papers(41.78%) had signature of our editors or reviewing experts, 31 (21.23%) had funding support. The average time length from publish to download was (6.35 ± 2.36) years (range 4-8 years). Conclusion There is a correlation between the download frequency and citation frequency among the high download frequency papers of Chongqing Medical Journal; the actual published small columns, but cited frequency is not high necessarily; local medical research resources are still the main source of publication quality manuscripts. The probability of paper with fund support is higher than paper without fund support.

objective To analyze the characteristics of high download frequency paper of Chongqing Medical Journal. Methods The top 150 high download frequency papers published in Chongqing Medical Journal were collected from CNKI database to analyze the total download frequency, download frequency of single papers, citation frequency, single paper citation frequency, authorship, affiliations, funding, and published columns. Results For the 146 high download frequency papers, the download frequency averaged 2035 times with a citation frequency of 71 103 times, showing a low correlation between download frequency and citation frequency (r=0.250, P=0.250). In the high download frequency papers, the top 3 were published in columns of review (54.1%), original articles (21.9%), and hospital or health management (7.5%). The first authors came mainly from Chongqing Medical University and the affiliated hospitals and Third Military Medical University and its affiliated hospitals. Sixty-one papers(41.78%) had signature of our editors or reviewing experts, 31 (21.23%) had funding support. The average time length from publish to download was (6.35 ± 2.36) years (range 4-8 years). Conclusion There is a correlation between the download frequency and citation frequency among the high download frequency papers of Chongqing Medical Journal; the actual published small columns, but cited frequency is not high necessarily; local medical research resources are still the main source of publication quality manuscripts. The probability of paper with fund support is higher than paper without fund support.

Objective To investigate the effects of tetramethylprazine (TMP) on left ventricular hypertrophy and the regulation of nicotinamide-adenine dinucleotide(NADPH) oxidases in renovascular hypertension of rat.Methods Hypertensive rats were obtained by using two-kidney-two-clip (2K2C) method.Rats were classified into sham-operated group,model group,low,high dose experimental groups (TMP,30,60 mg · kg-1 · d-1) and control group (candesartan,10 mg · kg-1 · d-1).The drugs were continuously administered for 2 weeks.Left ventricular (LV) hemodynamic parameters,serum superoxide ismutase (SOD),dmalondialdehyde (MDA) and hydrogen peroxide(H2O2)levels were measured.The ratio of LV weight to body weight (LVW/BW) was calculated.Hematoxylin-eosin(HE) staining was used for morphological analysis.RT-polymerase chain reaction and Western-blot were performed to investigate the protein expressions of brain natriuretic peptide (BNP),β-myosin heavy chain(β-MHC) and NADPH oxidases(Nox2,Nox4 and P47phox).Results Compared with model group,aortic systolic pressure (AoSP),aortic diastolic pressure (AoDP),LV end-systolic pressure (LVESP),LV end-diastolic pressure(LVEDP) significantly decreased in low,high dose experimental groups with siginificanly (all P ＜ 0.05) while (+ dp/dtmax) and (-dp/dtmax) increased in low,high dose experimental groups with siginificanly (P ＜ 0.05).Compared with model group on LVW/BW (2.8 ± 0.3) mg · g-1,LVW/BW of (1.9 ± 0.2),(1.7 ± 0.4) mg · g-1 in low,high dose experimental groups significantly decreased (P ＜ 0.05).Compared with model group SOD significantly increased while MDA and H2O2 decreased in low,high dose experimental groups with significandy (all P ＜ 0.05).The protein expressions of Nox2 in low,high experimental groups and model group were 0.82 ± 0.08,0.57 ± 0.05,0.30 ± 0.13;the protein expressions of Nox4 in above three groups were 1.00±0.10,0.79 ± 0.07,1.32 ± 0.15 and the protein expressions of P47phox in above three groups were 0.88 ± 0.08,0.65 ± 0.06,1.23 ± 0.15,compared with model group,the protein expression significantly decreased in low,high dose experimental groups with significantly (all P ＜ 0.05).Conclusion TMP attenuated cardiac hypertrophy possibly through decreasing NADPH oxidases (Nox2,Nox4,P47phox) expressions and oxidative stress in renovascular hypertensive rats.

Objective To evaluate the immunogenicity of the decellularized laryngeal scaffold.Methods Twelve perfused.decelluarized laryngeal scaffolds were obtained from rabbits through common carotid artery perfusion with detergents.The twelve decellularized laryngeal scaffolds and the twelve fresh larynxes were then implanted in para-laryngeal muscles of rabbits and harvested after two weeks,four weeks,twelve weeks and twenty-four weeks,respectively. Macroscopic view,histological examination and lymphocyte infihration test were performed.Results The decellularized larynxes were implanted and preserved the laryngeal extracellular matrix and laryngeal architecture.The decelluarized larynx did not show obvious immunological rejection after implanted into the para-1aryngeal muscles of the recipient rabbits.The volume of implanted larynx became smaller but retained cartilage scaffold.The larynxes in the control group presented the serious immunological rejection and the majority tissues of the larynxes were disintegrated and substituted by the fibrous connective tissues after four weeks.The peripheral tissues were damaged and necrotic at different degrees.The quantity of the lymphocyte infiltration in the control group was higher than that in the experiment group and the result had the statistical significance(P<0.01).Conclusions Perfused,decellularized technique can construct a low immune laryngeal cartilage scaffold which could be a satisfactory material for laryngeal repair.

Purpose/Significance To study and develop an intervention plan for the utilization barriers of health information services for empty nest elderly,in order to provide a basis for improving their knowledge,attitude,and action abilities in health information serv-ices.Method/Process Selecting residents of Yan'an community in Bengbu as research subjects,who are randomly divided into a control group and an intervention group.The intervention group use a pre-constructed intervention plan.After the intervention study,the con-trol group is provided with the same health education content as the intervention group.Result/Conclusion The intervention programs can improve the knowledge level and behavioral ability of empty nest elderly in utilizing information services.

Purpose/Significance To understand the influencing factors of health information literacy of elderly discharged patients receiving continuous nursing services,and to provide theoretical basis for related health education and health promotion.Method/Process The selective quota sampling method is used to conduct a questionnaire survey on elderly discharged patients aged 60 and above receiving continuous nursing services in Bengbu city,and a structural equation model is constructed to analyze the effect pathway of influencing fac-tors.Result/Conclusion The level of health information literacy of the discharged elderly patients receiving continuous nursing services is average.Healthy lifestyle has direct influence on health information literacy of them,and social support and psychological status have in-direct influence on them through self-efficacy and healthy lifestyle.It is suggested that family members and medical staffs should pay positive attention to patients,help patients maintain a good psychological state,promote the recovery of diseases,and improve the level of health information literacy.

Objective To observe the efficacy and safety of PEG-interferon α-2a(PEG-IFNα-2a)treatment on lamivudine(LAM)-resistant chronic hepatitis B (CHB)patients.Methods Eighty-one patients with lamivudine-resistant HBeAg (+) chronic hepatitis B patients were enrolled and divided into PEG-IFNα-2a treatment group(40 cases) and adefovir dipivoxil (ADV) control group (41 cases).Two groups were combined with LAM in the first 12 weeks(W).The ALT normalization rate,the HBV DNA and HBeAg negative rate,and the HBeAg seroconversion rate were observed in 12 W,24 W,48 W.Results The ALT normalization rate in 12 W,24 W of PEG-IFNα-2a group was 62.5%and 80.0%.AND it was higher than that of ADV group.The HBeAg negative rate and HBeAg seroconversion rate in 48 W of PEG-IFNα-2a group were 60% and 57.5%,which were higher than that of ADV group.The difference was statistically significant(P<0.05).Conclusion PEG-IFNα-2a treatment of lamivudine-resistant HBeAg (+) chronic hepatitis B is superior to ADV,and its security is well.