BACKGROUND:Occlusal scheme is the key of a successful complete denture, and how to choose a suitable occlusal scheme is a long-term problem for prosthodontists.
OBJECTIVE:To systematical y review the clinical effects of two occlusal schemes for complete denture.
METHODS:An electronic search of Cochrane Library, Medline/PubMed, EMBASE, CNKI, Wanfang and CBM databases were performed for clinical trials published before October 2013 using the key words of“complete denture”,“edentulous”,“occlusion”,”balanced”,“lingualized”,“anatomic”in Chinese and English. A manual searching of 11 relevant journals concerning oral medicine and reference lists of selected articles were conducted. Two reviewers independently extracted the data and assessed the quality of the included literature. Total y, 628 papers were retrieved.
RESULTS AND CONCLUSION:Only five articles met the inclusion and exclusion criteria. Of these five articles, one study showed lingualized occlusion dentures were more satisfactory than bilateral balanced occlusion dentures in denture retention (P<0.05);one study showed the lingualized occlusion exhibited lower scores for uncomfortable eating and avoiding particular foods (P<0.05), but higher scores for uncomfortable dentures than the bilateral balanced occlusion (P<0.05);one study showed the lingualized occlusion dentures have better masticatory efficiency and better protective role in alveolar bone than the bilateral balanced occlusion dentures (P<0.05);another two studies showed no significant differences in the overal satisfaction between lingualized occlusion and bilateral balanced occlusion dentures. These findings indicate that the lingualized occlusion is similar to bilateral balanced occlusion in the satisfaction of patients, masticatory efficiency, appearance and speech, but the lingualized occlusion dentures are better for severe alveolar bone resorption patients in terms of masticatory efficiency and better protection of alveolar bone.

OBJECTIVETo observe the effect of Tetramethyl pyrazine (TMP) on the cytokines and inflammatory mediators in the serum and the synovial fluid of collagen-induced arthritis (CIA)rats, and further to investigate its possible mechanisms for treating rheumatoid arthritis (RA).

METHODSType II CIA rat model was established. Rats in the TMP group were administered with TMP at 50 mg/kg and 100 mg/kg, once daily. Dexamethasone at 2.0 mg/kg was intramuscularly injected to those in the Dexamethasone treated group, once daily. Normal saline at 2 mL/kg was given to those in the normal control group and the model group, once daily. All medication was started from the 7th day, lasting to the 35th day. CIA rats' foot swelling degree was observed. Contents of serum IL-1, IL-6, IL-2, NO and PGE2in the synovial fluid were detected by radioimmunoassay and nitrate reduction method.

RESULTSCompared with the normal group, the foot swelling obviously increased, contents of NO and PGE2 in the synovial fluid were obviously elevated in the model group (P < 0.01). Compared with the model group, the foot swelling could be obviously inhibited by 100 mg/kg TMP and Dexamethasone; serum levels of IL-1 and IL-6 obviously decreased, serum IL-2 level obviously increased, contents of NO and PGE, decreased (P < 0.01). TMP 50 mg/kg could obviously inhibit the foot swelling of CIA rats (P < 0.01). There was no statistical difference in other indices (P > 0.05).

CONCLUSIONSTMP at 100 mg/kg showed obvious inhibition on CIA rats. Its inhibitory effect might be correlated to inhibiting activities of endogenous cytokines and the generation of inflammatory mediators in inflammation local regions, improving contents of anti-inflammation cytokines, and inducing the balance of the inflammatory cytokine network.

Animals ; Arthritis, Experimental ; blood ; metabolism ; Dinoprostone ; metabolism ; Female ; Interleukin-1beta ; blood ; Interleukin-2 ; blood ; Interleukin-6 ; blood ; Male ; Nitric Oxide ; metabolism ; Pyrazines ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Synovial Fluid ; metabolism

AIM:To observe the effect of fresh amniotic membrane transplantation ( FAMT) in acute ocular chemical burns.
●METHODS:A prospective study of 25 consecutive cases (36 eyes) with acute ocular chemical burns were treated with FAMT. The clinical efficacy was observed such as the time of amniotic membrane absorbed, corneal epithelialization & transparency, visual acuities and complications.
●RESULTS: With follow-up ranged from 3 to 6mo, 31 eyes′ amniotic membrane were dissolved in 2wk (86%). A total of 33 eyes showed corneal epithelialization in 4wk ( 92%) , 3 eyes showed persistent corneal epithelial defects and need secondary limbal stem cell transplantation or corneal transplantation ( 8%) . A total of 10 eyes showed superficial corneal vascularization (28%), 6 eyes′ cornea were opacity in part (17%), and one eye was symblepharon (3%).
●CONCLUSION:Early FAMT is an effective treatment in the management of acute ocular chemical burns to support epithelial healing, restore ocular surface integrity with potential to improve vision and reduce the incidence of complications. Furthermore, FAMT has advantages of easily obtain and convenient usage, which is suitable in local hospital of our country.

Objective To study the effect of herbal reyanbao combined with rehabilitation training on the rehabilitation of patients with lumbar disc herniation.Methods 120 cases with lumbar disc prolapse as the research object from January 2015 to December 2016 in Wuhan integrated traditional Chinese and western medicine hospital were divided into two groups(the control group and the observation group).The control group were treated with routine conservative+conventional nursing plan, and the observe group were given herbal reyanbao combined with rehabilitation training.Clinical data were compared in the two groups.Results The clinical effect and rehabilitation degree in the observation group were better than those in the control group, the difference was statistically significant(P< 0.05).Conclusion It can help patients with lumbar disc herniation recover as soon as possible which herbal reyanbao combined with rehabilitation training were used on the rehabilitation of patients, and it is worthy of application.

OBJECTIVE: To analyze the results of hearing screening and the related factors in 3200 newborn infants, in order to know the incidence of neonatal hearing disorders. METHOD: Three thousand two hundred cases of newborn infants born during 2014-01 and 2015-03 were tested for hearing screening. According to risk factors, newborns were divided into the normal newborn group (2945 cases) and the high-risk neonatal group (255 cases). Using fast brainstem auditory evoked potential (AABR) to screen the hearing screening of newborn infants with 3~5 d; those who did not pass the screening, after the birth of 30~42 d re-screening; re-screening still not pass, within 3 months line diagnostic auditory brainstem evoked potential (diagnostic ABR) confirmed. Comparative analysis of newborn hearing screening by screening through rate, re-screening through rate and hearing impairment rate proportional relationship with the relevant factors, and the differences of hearing screening results in the normal newborn group and the high-risk neonatal group. RESULT: (1)The rate of neonatal hearing screening did not pass was 7.50% (240/3,200); 30 cases was not involved in re-screening, the rate of re-screening did not pass was 15.24% (32/210); hearing impairment rate is about 0.38%(12/3200), and the bearing impairment positive rate was 1.31% (42/3200). (2) There was no significant difference of different delivery mode, neonatal sex in newborn hearing screening through rate, re-screening through rate and hearing impairment rate (P > 0.05). Different gestational age, maternal age in newborn hearing screening through rate, re-screening through rate and hearing impairment rate, the difference was statistically significant (P < 0.05). (3) Screening through rate and re-screening through rate of the high-risk neonatal screening group were significantly lower than the normal newborn group (P < 0.05), and hearing impairment rate was higher than normal newborn group (P < 0.05). CONCLUSION Strengthen prenatal health care, to reduce abnormal childbirth conditions (preterm birth, neonatal asphyxia), universal newborn hearing screening and improve screening accuracy, and to strengthen newborns with risk factors for early diagnosis and intervention, to reduce the incidence of neonatal hearing impairment has important significance.
Evoked Potentials, Auditory, Brain Stem ; Gestational Age ; Hearing Disorders ; epidemiology ; Hearing Tests ; Humans ; Incidence ; Infant ; Infant, Newborn ; Neonatal Screening ; Risk Factors

Humanities education in military medical university must have military feature in mind.According to special military demand, this education should combine teaching with military historical tradition, historical task, construction of curricula set-up system, and the reality of military campus culture construction to make this education have pertinence.

Objective:To investigate the immunogenicity of SARS-CoV N DNA vaccine and the feasibility of live-attenuated Salmonella typhimurium as the carrier to deliver the N DNA vaccine.Method:The recombinant attenuated salmonella strain CS022 harboring the pcDNA-N DNA vaccine was constructed.And mouse was immunized with the recombinant strain via intranasal and oral routes.Cellular and humoral immune responses were assessed by ELISA,lymphocyte proliferation assays,ELISPOT and FACS.Result:The oral immunization with the transformed salmonellae elicited strong immune responses mainly including high level of N-specific antibody,a dramatic activation of IFN-?-secreting cells,a high level of lymphocyte proliferation,and a high level of activated CD8+ T cells.Conclusion:Live-attenuated Salmonella typhimurium could effectively deliver the SARS-CoV N DNA vaccine in vivo.These encouraging pre-clinical data provide a rational basis for undertaking a new immune style to investigate SARS vaccine.

To explore the underlying mechanism(s) of pulmonary arterial hypertension in endotoxic shock, the roles of N-acetylcysteine (NAC), nitric oxide (NO) and carbon monoxide (CO) were investigated. Pulmonary arterial rings (3-mm width) were prepared from 24 rabbits. Lipopolysaccharide (LPS), after 7-hour incubation, decreased the endothelium-dependent relaxation response of the arterial ring (pre-contracted with phenylephrine) to acetylcholine (1 mumol/L), but did not affect the endothelium-independent relaxation response to sodium nitroprusside. The LPS effects were reduced by a concomitant incubation with the free radical scavenger (NAC), NO donor (L-arginine), and CO donor (hemin), respectively. On the other hand, the LPS effects were enhanced by applying heme oxygenase-1 (HO-1) inhibitor (zinc protoporphyrin) to block CO production. The response to acetylcholine changed from relaxation to contraction, however, the contractile response to phenylephrine increased significantly after pre-incubation with nitric oxide synthase (NOS) inhibitor (L-NAME) to block NO production, confirming the importance of CO and NO. These results show that LPS impairs endothelium-dependent relaxation of the pulmonary artery, which can be greatly reduced by the antioxidant, or by supplying with NO and CO. Thus, multiple factors are involved in this model of endotoxin-induced pulmonary hypertension.
Acetylcysteine ; metabolism ; Animals ; Carbon Monoxide ; metabolism ; Hypertension, Pulmonary ; etiology ; physiopathology ; Lipopolysaccharides ; toxicity ; Male ; Nitric Oxide ; metabolism ; Pulmonary Artery ; drug effects ; physiopathology ; Rabbits ; Shock, Septic ; complications

AIMTo investigate the alleviating effect of N-acetylcysteine (NAC) on lung injury induced by lipopolysaccharides (LPS) and its mechanism.

METHODSThe effects of NAC on changes of the pulmonary arterial reactivity and the ultrastructure of pulmonary arterial endothelium induced by LPS were observed with the isolated artery ring technique and scanning electron microscope (SEM). Malondialdehyde (MDA), nitric oxide (NO) contents and superoxide dismutase (SOD) activity of pulmonary artery tissues were detected.

RESULTSThe exposure of pulmonary artery to LPS (4 microg/ml, 7 h) led to reduction of endothelium-dependent relaxation response to acetylcholine (ACh), which was reversed by the concomitant exposure to NAC (0.5 mmol/L, 7 h), whereas NAC itself had no effect on the response. Significant structural injury were observed under SEM in LPS group and alleviated the changes in LPS + NAC group. The MDA, NO contents increased but SOD activity decreased in LPS group, which were reversed by the concomitant exposure to NAC.

CONCLUSIONNAC protects pulmonary artery endothelium and enhances endothelium-dependent relaxation response of pulmonary artery by antioxidation effect, which may be one of the mechanisms of its reversing pulmonary artery hypertension and following lung injury induced by LPS.

Acetylcysteine ; pharmacology ; Animals ; Endothelium ; metabolism ; pathology ; ultrastructure ; Lipopolysaccharides ; adverse effects ; Malondialdehyde ; metabolism ; Microscopy, Electron, Scanning ; Nitric Oxide ; metabolism ; Pulmonary Artery ; metabolism ; pathology ; ultrastructure ; Rabbits ; Superoxide Dismutase ; metabolism

AIMTo explore the role of endogenous and exogenous hydrogen sulfide (H2S) in lipopolysaccharide (LPS)-induced acute lung injury (ALI) in rats and the underlying mechanisms.

METHODS120 Sprague-Dawley rats were randomly divided into four groups: control, LPS (instilled intratracheally to induce ALI), NaHS (H2S donor) + LPS, and propargylglycin (PPG) + LPS. Animals were sacrificed at 4 h or 8 h after agent administration. Lung weight/body weight ratio (LW/BW) was measured and calculated. Morphological changes of lung tissues were observed. H2S concentration, NO concentration (NO) and carbon monoxide (CO) level in plasma were tested. Malondialdehyde (MDA) content, CSE activity, inducible nitric oxide synthase (iNOS) activity and hemeoxygenase (HO) activity of the lung were determined. PMN and protein content in BALF were also tested. Immunohistochemisty technique was performed to examine the expression of iNOS and HO-1 protein in lung tissues. The correlation of H2S content with the above indices was analyzed.

RESULTSCompared with control conditions, severe injuries of lung tissues and a raised LW/BW, MDA content, PMN and protein content in BALF were observed in rats treated with LPS. LPS also lead to a drop in plasma H2S concentration and lung CSE activity. The enzyme activity of iNOS and HO, the protein expression of them and plasma NO, CO level increased after LPS instillation. Administration of NaHS before LPS could attenuated the changes induced by LPS. Pre-administration of PPG exacerbated the injuries induced by LPS, increased PMN and protein content in BALF, the plasma NO level, lung iNOS activity and its protein expression, but there was no prominent variation in CO level, HO activity and HO-1 protein expression compared with those of LPS group. The H2S content was positively correlated with CSE activity, CO content and HO-1activity (r = 0.945-0.987, P < 0.01), and negatively correlated with the other indices (r = -0.994 - -0.943, P < 0.01).

CONCLUSIONDownregulation of H2S/CSE was involved in the pathogenesis of acute lung injury induced by LPS. Endogenous and exogenous H2S provided protection against the lung injuries, which might be explained by its anti-oxidative effects, attenuating inflammatory over-reaction in lung induced by PMN,the downregulation NO/iNOS system and the upregulation of CO/HO-1 system.

Acute Lung Injury ; chemically induced ; physiopathology ; Animals ; Antioxidants ; metabolism ; pharmacology ; Bronchoalveolar Lavage Fluid ; Carbon Monoxide ; metabolism ; Heme Oxygenase (Decyclizing) ; metabolism ; Hydrogen Sulfide ; metabolism ; pharmacology ; Lipopolysaccharides ; antagonists & inhibitors ; toxicity ; Male ; Nitric Oxide ; metabolism ; Nitric Oxide Synthase Type II ; metabolism ; Random Allocation ; Rats ; Rats, Sprague-Dawley