Dental non-metric traits of Han and Zhuang people / 解剖学报

[Abstract] Objective To investigate the relationship between the Han, Zhuang and the World populations by comparing the frequency of dental non-metric traits. Methods From 2015 to 2019, ten dental non-metric traits were sampled from He’nan, Jiangsu and Guangxi Zhuang Autonmous Region, with sample size of 1785(674 He’ nan, 547 Jiangsu, 388 Guangxi Han, 176 Guangxi Zhuang). Principal component analysis, multidimensional scaling and neighbor network were carried out. Results East Asian populations could be clearly divided into two major groups, Northeast Asian and Southeast Asian. Han and Zhuang populations were close to the Northeast Asian populations, but were far from the Southeast Asian populations. There were also some north-south differences within Han populations. Conclusion Both Sundadonty and Sinodonty are existed in East Asian populations. Han and Zhuang populations dental non-metric traits are closer to the Sinodonty.

Identification of A Case of DEL Blood Group with DAT Positive Phenotype and Pedigree Analysis / 中国实验血液学杂志

OBJECTIVE@#To identify the blood group of a patient with DEL phenotype combined with positive direct anti-human globulin test and to analyze the pedigree.@*METHODS@#Routine serological reagents were used for serological analysis of RhD blood group in the pedigree members. Exons and flanking sequences of RHD gene were amplified, sequenced and analyzed for heterozygosity. The familial genetic state of DEL phenotype was further analyze in the family members.@*RESULTS@#The DAT was strongly positive in the proband. The 1227G>A allele (RHD*DEL1) was present in the exon 9 of RHD gene, and the mother was the carrier of RHD*DEL1. The proband was identified as RHD+/RHD-, suggesting the CDe/Cde haplotype.@*CONCLUSION@#The proband is DEL phenotype (RHD*DEL1).

Prediction and analysis for secretory proteins from Thelazia callipaeda at Genome Scale / 中国人兽共患病学报

We conducted prediction and analysis for secretory proteins from Thelazia callipaeda at Genome Scale based on the previous full genome annotation.The software SignalP,TMHMM,big-PI Predictor,MEME,Protcomp and SecretomeP were combined to process the prediction of the secretome of Thelazia callipaeda.The analyses of secretory proteins by GO function enrichment,KEGG pathway,and statistics of domains were performed.Results showed that totally 259 secretory proteins were found in Thelazia callipaeda genome and the amino acid lengths of secretory proteins were mainly concentrated between 100 to 700 aa exclusively.GO function analysis of secretory proteins indicated that they were enriched in the secreting pathways and in the interactions with host.The results of KEGG metabolism secretory proteins suggested that some of them contributed to drug metabolism and glutathione metabolism.And domain analysis suggested that most of them were glycoside hydrolase,contributing to sugar metabolism.Around 126 secretory proteins had antigenicity of B-cell epitope.In summary,we found that secretory proteins in Thelazia callipaeda were most small proteins,which were involved in sugar metabolism and antioxidative activity,facilitating Thelazia callipaeda to invade the hosts and play a key role in the parasitic course.

Relationship between nose morphology and craniofacial structures in Luzhou adults / 中国组织工程研究

BACKGROUND: Orthodontic treatment can improve facial aesthetics by changing the position of nose and chin. Therefore, fully-understanding of the nasal morphology and craniomaxillofacial structure is critical for the design of orthodontic treatment, so as to avoid the postoperative facial incongruity. OBJECTIVE: To study the correlation of nose morphology index with sex, sagittal skeletal features and vertical skeletal features and its differences in adults of Luzhou, and to explore the relationship between nasal parameters and craniofacial parameters, thereby providing references for the diagnosis and design of orthodontics. METHODS: Totally 240 adult patients in the Department of Orthodontics, Hospital of Stomatology, Southwest Medical University between 2014 and 2016 were enrolled, and X-ray examination of the oral and maxillofacial region was performed to measure the 27 related indexes. RESULTS AND CONCLUSION: The results of the three-factor ANOVA showed that sex-related significant factors in certain nasal parameters included nasal length, nasal tip height, alarheight, hump, soft-tissue facial convexity, columella convexity, and nasal bone length (P < 0.05). The sagittal skeletal features significantly influenced four nasal parameters including hump, nasolabialangle, nasomentalangle, soft-tissue facial convexity (P < 0.05). The vertical skeletal features were found to be significant for nasal-bone length, soft-tissue facial convexity (P < 0.05). Sex was found to be a significant correlation in nasal morphology and nasal size and nasal protrusion of the male were larger than those of the female. Sagittal skeletal classification had obvious influence on certain nasal parameters, but there were no significant differences in the nasal size among skeletal patterns. Vertical skeletal classification had obvious influence on certain nasal parameters. To conclude, nasal length, prominence, and form are associated with height, length and anteroposterior/vertical position of the maxilla and mandible.

Sequential analysis of genome of Thelazia callipaeda / 中国血吸虫病防治杂志

Objective To investigate the molecular characteristics of genome sequence of Thelazia callipaeda(T.cp).Meth-ods The obtained T.cp genome assembling data were annotated by using a combination of ab initio gene by softwares,Gene-Mark and GeneID,and the homology of the experimentally confirmed genes was predicted by software GeMoMa.The results were integrated by software EVM to predict all genes of genome.The obtained genes were annotated in the common public data-base and three dedicated databases(CAZyme,TCDB and PHI),respectively.Results The Scaffolds and Contigs gene struc-ture of T.cp genome(79.34 Mb)was analyzed,and a total of 6 333 genes were obtained.The sequence search was conducted in the public databases using BLASTx,of which 97.85％of the genes could be annotated.The genes annotated in the NR database were the most(98.69％),and those enriched in the KEGG pathway were the least(50.50％).The functional genes were blasted by KOG database and totally 4 517 genes were found.The three special databases(CAZyme,TCDB and PHI)were used to an-notate all the genes,and 136,139 and 1 498 genes were assigned respectively,and the number of genes in the PHI database was the largest.In the cytochrome proprietary database,238 cytochrome P450 genes were predicted.Conclusion We have pre-liminarily revealed the T.cp genome structure characteristics and annotation information,and totally 6 333 genes are obtained.

Stability improvement in adult maxillary transverse deficiency after surgically assisted rapid maxillary expansion: a Meta-analysis / 中国组织工程研究

BACKGROUND: Surgically assisted rapid maxillary expansion (SARME) has been proved to exert good therapeutic efficacy on maxillary transverse deficiency (MTD) in adults, but its long-term efficacy and stability still remain controversial.OBJECTIVE: To analyze the stability improvement in adult MTD after SARME through a Meta-analysis.METHODS: A computer-based search of PubMed, Medline, EMBASE, Central Register of Controlled Trials, CNKI, and WanFang databases was conducted for the randomized, quasi-randomized controlled trials and clinical case-control trials published before May 31st, 2015. The quality evaluation and data extraction in the middle- and high-quality literature were performed by two professional researchers independently, and a Meta-analysis was then performed using Revman5.3 software.RESULTS AND CONCLUSION: Totally 13 articles involving 513 cases were included. The results of Meta-analysis showed that: (1) the stability of the teeth: the difference of the first molar (WMD=-1.03, 95%CI: -2.00--0.06), canine (WMD=-1.26, 95%CI: -2.02 to -0.49) had significant difference after surgery and the follow-up; (2) the stability of the bone: the maxillary alveolar width of the first molar (WMD=-0.43, 95%CI: -1.82 to 0.97) at post-operation and the follow-up had no significant difference; (3) the stability of the nasal airway: in the short-term, the function of the nasal airway was improved significantly, while the long-term efficacy needed to be confirmed further. To conclude, after SARME, the dental and the maxillary alveolar in adult MTD have kept long-term stability, and the nasal airway is improved significantly in short-term.

Molecular and Genetic Mechanism of Three Cases of Para-Bombay Blood Group / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To explore molecular and genetic mechanism of 3 cases of para-Bombay blood group.</p><p><b>METHODS</b>The bood samples of proband and family members were selected to identify their blood groups with conventional serologic methods, and salivary components carrying the ABH antigens were detected. The coding regions of FUT1 as well as exon 6 and 7 of the ABO gene were amplified using polymerase chain reaction(PCR), and the FUT1 gene was directly sequenced.</p><p><b>RESULTS</b>All the 3 cases of proband were confirmed as para-Bombay blood group. Direct sequencing revealed h new2 (nt328G→A) and h1(nt 547 ΔAG) in FUT1 gene of the proband 1, and FUT1 genotype was h1/h new2. However, the genotypes of his parents were H/h1 and H/h new2, which were non-Bombay individuals. The FUT1 genotypes of proband 2 and 3 were h1h2 (nt 547 ΔAG) and h1h2 (nt 880 ΔTT), respectively.</p><p><b>CONCLUSION</b>The technology of molecular biology can be used to detect the base deletion mutations in FUT1 gene, which contributes to the analysis of molecular and genetic mechanism of para-Bombay blood group.</p>

Impact of Prosthetic Characteristics and Life Stress on Oral Health Related Quality of Life in Anterior Fixed Dental Prosthesis Treatment.

Aims: This cross-sectional study aimed to explore potential factors influencing oral health related quality of life (OHRQoL) in a Chinese population treated with anterior dentition fixed dental prosthesis (FDP). Study Design: Cross-sectional study. Place and Duration of Study: West China Hospital of Stomatology, Sichuan University, between December 2012 and May 2013. Methodology: According to the patient records in the dental hospitals, 1918 patients were initially selected and invited for a follow-up examination. After the selection, 987 participants were finally included and asked to complete a questionnaire which included three forms: Basic information, the Chinese version of Oral Health Impact Profile-14 items (OHIP-14) and Social Readjustment Rating Scale (SRRS). After data collection, independent sample t-test, one-way ANOVA and spearman rank correlation were used to assess each variable’s independent impact on OHRQoL, while multifactor impact was evaluated by stepwise linear regression. Results: 987 responses were acquired. Higher age caused a higher OHIP-14 score. For prosthesis material, all ceramic presented the lowest OHIP-14 score. For prosthesis type, veneer presented the lowest OHIP-14 score. Either prosthesis service time or SRRS score was positively correlated to OHIP-14 score. In stepwise linear regression, prosthesis material/service time/type and life stress were finally defined as OHRQoL predictors. Conclusion: Three prosthetic characteristics (prosthesis material/service time/type) and life stress are responsible for OHRQoL level of patients treated with anterior FDP.

Crown-root morphology of adjacent lateral incisors in patients with palatally impacted maxillary canines:A cone-beam CT study / 医学研究生学报

Objective Maxillary canine palatal impaction is a common deformity in stomatology and its etiology remains dis-putable.The aim of this study is to investigate the crown-root morphology of the adjacent lateral incisors in patients with palatally impacted maxillary canines using cone-beam computed tomography ( CBCT) in order to explore its etiology. Methods Using CBCT scanning, we examined 94 maxillary canines in 84 patients, including 27 palatally impacted maxillary canines in 24 patients ( the experi- mental group) , 37 buccally impacted maxillary canines in 30 age-and sex-matched subjects ( control group A) , and 30 normal maxil-lary canines in 30 age-and sex-matched subjects ( control group B) .We selected some necessary reference planes, measured the ori-entation and position of the chosen canines, and studied the morphology of the adjacent lateral incisors by CS 3D imaging, followed by statistical analysis of 17 of the linear variables obtained. Results Compared with control group A, the experimental group showed significantly shorter tooth length ([22.930 ±1.849]mm vs [21.240 ±1.651]mm, P<0.05), crown length ([9.270 ±0.559]mm vs [8.150 ±0.889] mm, P<0.05), and mesiodistal width at 4 mm to the cementoenamel junction (CEJ) ([7.260 ±0.579]mm vs [5.900 ±0.581] mm, P<0.05) as well as shorter buccolingual width at the CEJ level, mesiodistal width at 4 mm to the CEJ, buc-colingual width at 4 mm apical to the CEJ, distance from the canine cusp to the coronal and occlusal planes, and coronal angulation of the canine (all P<0.05).There was a negative correlation between maxillary canine palatal impaction and age (P<0.05). Conclusion One of the main causes of maxillary canine palatal impaction is that the adjacent lateral incisor is too small to provide suf-ficient guidance to the canine.The severity of maxillary canine palatal impaction increases with the age of the patient.

Surgical Fixation of Fourth and Fifth Metacarpal Shaft Fractures with Flexible Intramedullary Absorbable Rods: Early Clinical Outcomes and Implications / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>To avoid the irritation of tendons and soft tissues as well as hardware-related problems, we designed an intramedullary fixation with bioabsorbable rods for the treatment of the metacarpal shaft fractures.</p><p><b>METHODS</b>Five patients with nine shaft fractures of the fourth and fifth metacarpi were treated with intramedullary absorbable implants and followed up with an average of 4.2 months postoperatively.</p><p><b>RESULTS</b>At final follow-up, all patients achieved fracture union with no signs of inflammatory or subcutaneous effusion. There was no shortening, angulatory, or rotatory deformity. There was almost full active extension range of motion (ROM) of the metacarpophalangeal joints while the active flexion ROM of these joints was 80.7 ± 9.6°. Compared with the contralateral hand, the grip strength of the injured hand was 94.0 ± 9.6%. X-rays showed that the arch of the second to fifth metacarpal heads was smooth. There were no intramedullary lytic changes and soft tissue swellings.</p><p><b>CONCLUSION</b>The intramedullary absorbable implants are a safe, simple, and practical treatment for fourth and fifth metacarpal fractures with good early clinical outcomes and no significant complications.</p>

role of double-balloon enteroscopy following capsule endoscopy in diagnosis of obscure Small intestinal diseases

Objective: The aim of this study was to evaluate the detection rate accuracy of Double-balloon Enteroscopy [DBE] after Capsule Endoscopy [CE] in patients with suspected small bowel diseases

Methodology: From January 2009 to March 2012, sixty-two patients with obscure small bowel diseases who underwent CE followed by DBE were included in this study. Introduction of the endoscope by DBE was either orally or anally according to CE

Results: Sixty-two patients are reported. The overall detection rate of small bowel diseases using CE was 70.9% [44/62]. Sixty-eight DBE procedures following capsule endoscopy were carried out, There was no significant difference [chi[2]=0.6739, P > 0.05] of Positive findings between CE and CE +DBE. Furthermore, the detection rate of small bowel diseases in patients with obscure small intestinal bleeding using CE +DBE [90.9%, 30/33] was superior to that of CE [78.8%, 26/33]; chi[2]=1.8857, P > 0.05

Conclusions: Capsule Endoscopy [CE] can cover the whole GI tract and provide the selection of the route of Double-balloon enteroscopy [DBE]. DBE can also serve as a good complementary approach after an initial imaging using CE. It can verify the findings of CE and provide therapeutic intervention. Using of CE followed by DBE is effective in the diagnosis and management of patients with obscure small bowel diseases

Characterization of S gene of a strain of hantavirus isolated from Apodemus peninsulae in Heilongjiang Province / 病毒学报

In order to study the molecular characterization of the hantavirus isolated from Apodemus peninsulae in Heilongjiang Province, the S gene of a new strain NA33 was amplified, sequenced and analyzed. The results showed that the complete nucleotide sequence of the S gene of NA33 strain was composed of 1 693 nucleotides with TA-rich. The S gene contained one ORF, starting at position 37 and ending at position 1 326, encoding the N protein of 429 amino acid residues, and in line with HTN-based coding. Sequence comparison of the S genes between NA33 and reference hantavirus strains showed that NA33 was more homologous to Amur-like viruses than to the Hantaan (HTN) viruses or the other hantaviruses. Phylogenetic analysis of the amino acid sequence of N proteins showed that NA33 was clustered into the group of Amur-like viruses and was more similar to Far East Russia and Jilin strains isolated from Apodemus peninsulae. The phylogenetic tree indicated a certain degree of host-dependent characteristics and geographical aggregation characteristics of hantanviruses. Furthermore, the amino acid sequence of N protein of NA33 had the conserved amino acid sites of Amur-like viruses. In conclusion, Apodemus peninsulae carried Amur-like viruses in Heilongjiang province and was an important infectious source of hemorrhagic fever with renal syndrome (HFRS).

An epidemiological investigation of acute occupational hand injuries / 中华劳动卫生职业病杂志

<p><b>OBJECTIVE</b>To study composition, distribution and causes of acute occupational hand injuries in Beijing Jishuitan Hospital.</p><p><b>METHODS</b>From April 1st 2005 to September 30th 2005, all patients with acute hand injuries were investigated by questionnaire focusing on all related epidemiological elements.</p><p><b>RESULTS</b>Two thousand six hundred fifty eight cases with acute hand injuries were about 17.3 % of patients with acute orthopedic injuries. Their mean age was (30.4 +/- 10.8) years old. The radio of males to females in cases with acute hand injuries was 57:1. The cutting and crushing injuries were the main causes of acute hand injuries. Most of cases with acute hand injuries were engaged in work related to machines. The acute hand injuries were mainly involved in index and middle figures of both hands, 94.9 % of acute hand injuries were opening, and 87.6% of acute hand injuries were involved in the deep tissues.</p><p><b>CONCLUSION</b>Acute hand injuries are the common occupational severe injuries for young male workers. The acute hand injuries occur in patients engaged in work related to machines. The prevention of acute hand injuries should be emphasized.</p>

Characteristic analysis of E protein genes of new strains of tick-borne encephalitis virus isolated from China / 病毒学报

In order to determine the characteristics and genotypes of E protein genes of tick-borne encephalitis (TBE) virus strains DXAL-5, 12,13,16,18, 21 isolated from Ixodes persulcatus in the Northeast of China, cDNA synthesis of E protein genes of the six DXAL strains was performed using RT-PCR, and the E protein genes were cloned and sequenced. The results showed that the nucleotide sequence of E protein gene of the six DXAL strains was 1488 bp in length respectively and the length of predicted protein was 496 aa respectively. Sequence comparison of E protein genes among the six DXAL strains and the reference TBE virus strains showed that the six DXAL strains were more homologous to Far Eastern subtype strains than to Siberian subtype strains or European subtype strains. And the majority of subtype-determining amino acid sites of the six DXAL strains belonged to TBE virus Far Eastern subtype. Phylogenetic analysis of protein E showed that the six DXAL strains were all within the clade containing Far Eastern subtype strains. The new strains had higher identities and closer phylogenetic relationships with Senzhang strain, so we speculate that this vaccine strain still have good protection against the new TBE virus isolates. In the A, B and C antigenic domains of protein E, the six DXAL strains had different degrees of amino acid changes. These mutations were likely to affect the function of E protein.

Isolation and identification of A reovirus from masked civet cats (Paguma Larvata) / 病毒学报

192 samples of Masked Palm Civet (Paguma Larvata) from Guangdong Province were inoculated in Vero-E6 cells. One sample which came from masked palm Civet didn't cause cytopathic effects (CPE) until fourth-passage on Vero-E6 cells. Infected cells emerged granulating, shrinking, rounding and falling off. After three times freeze-thaw, cells and culture medium were harvested for electron microscopy. Virus particles were nonenveloped, double capsid and icosahedral symmetry. This virus was designated Masked Palm Civet/China/2004 (MPC/04). Hemagglutination test indicated that the virus could agglutinate healthy human type O red cells, but not the red cells of SPF chicken, experimental common bovine, rat and guinea pig. This virus was tolerant to chloroform treatment, pH 3.0 and water bath 50 degrees C 1 h. 1 M MgCl2 treatment could enhance resistance of virus to heat and increase infectivity. In order to classify the strain on the molecular level, specific primers according to mammalian reovirus were used for Reverse Transcription Polymerase Chain Reaction (RT-PCR). Appropriate specific products were amplified by RT-PCR. NCBI BLAST analysis indicated that this segment shared the highest identity to mammalian reovirus serotype 1 (T1L) virus. So we can deduce this virus is a member of the Reoviridae.

Effect of fibrinogen on the adherence of Porphyromonas gingivalis to human oral epithelial cells / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To study the role of fibrinogen molecule in the pathogenesis of periodontal diseases.</p><p><b>METHODS</b>An in vitro cell culture model was used. Methyl-(3)H Thymidine radiolabeled Porphyromonas gingivalis (Pg) ATCC 33277 were examined for their ability to adhere to and invade the confluent monolayers of human oral epithelial KB cells with or without exogenous human fibrinogens by scintillation spectrometry.</p><p><b>RESULTS</b>The addition of exogenous fibrinogens made more amount of and higher ratios of adhesive and invasive Pg, in contrast to the group without exogenous fibrinogen (P < 0.001). At different concentrations of exogenous fibrinogen, the amount and ratios of adhesive and invasive Pg varied significantly (P < or = 0.007). The higher concentrations of exogenous fibrinogen was added, the greater amount and ratios of adhesive and invasive Pg were found.</p><p><b>CONCLUSIONS</b>Fibrinogen promotes the adherence of Pg to human oral epithelial cells and may play an important role in the pathogenesis of periodontal diseases.</p>