Glycoproteins ; genetics ; metabolism ; Herpesviridae ; genetics ; metabolism ; Viral Proteins ; genetics ; metabolism

OBJECTIVE: To screen for MYOC gene variants among sporadic patients with primary open angle glaucoma (POAG). METHODS: For 398 patients with POAG, Sanger sequencing was applied to detect potential variants of the MYOC gene. RESULTS: Eight patients (2.0%) were found to harbor variations of the MYOC gene. These included five types of variants, among which c.667C>T (p.Pro223Ser) and c.1138G>T (p.Asp380Tyr) were novel. c.382C>T (p.Arg128Trp), c.1109C>T(p.Pro370Leu) and c.1130C>A (p.Thr377Lys) were previously associated with POAG. Alignment of amino acid sequences of MYOC proteins of various species revealed that the two novel variants have occurred at highly conserved positions. c.1138G>T was predicted to be possible pathogenic by Bioinformatic analysis. CONCLUSION Two novel variants of the MYOC gene were detected among sporadic POAG patients, which enriched its variant spectrum.
Cytoskeletal Proteins ; genetics ; Eye Proteins ; genetics ; Glaucoma, Open-Angle ; genetics ; Glycoproteins ; genetics ; Humans ; Mutation

In this study we investigate the expression pattern of mucin genes in the human testis and evaluate the relationship between the expression of mucin genes and impaired spermatogenesis in the human testis. Thirty human testis tissues were collected from patients undergoing diagnostic testicular biopsy to investigate the cause of infertility. One part of the tissue underwent histological observation, and the other part of the tissue was subjected to semiquantitative RT-PCR of mucin genes, that is, mucin1, 2, 3, 4, and 9. The relative amount of mucin mRNAs was calculated by densitometry using glyceraldehydes-3-phosphate dehydrogenase (GAPDH) as an internal control. The samples were histologically diagnosed as either obstructive azoospermia with normal spermatogenesis (n = 13) or non-obstructive azoospermia with impaired spermatogenesis (n = 17). In the human testis with normal spermatogenesis, mRNA expression of mucin1, 9, 13 and GAPDH were found, but RT-PCR products of mucin 2, 3 and 4 were not detected. In the testis with impaired spermatogenesis, however, RT-PCR product of mucin1 was not found. There was no difference in the other mucin mRNA expression patterns between the testis with either normal or impaired spermatogenesis. To our knowledge, this study is the first that has detected the mRNA of mucin9 and 13 in human testis. This study also shows that mucin1 expression might be closely related to spermatogenesis. Our findings should be substantiated by more direct evidence, such as mucin protein expression and localization.
Testis/*metabolism ; *Spermatogenesis ; Mucins/*genetics ; Middle Aged ; Male ; Humans ; Glycoproteins/genetics ; Antigens, Neoplasm ; Antigens/genetics ; Adult

OBJECTIVETo investigate the polymorphisms of platelet membrane glycoprotein genes related to human platelet alloantigen (HPA)-1 to 17w.

METHODSThe DNA segments of platelet membrane glycoprotein genes related to HPA-1 to 17w were amplified using author's designed primers. The amplification products were purified and directly sequenced to identify the HPA genotype and glycoprotein gene polymorphisms.

RESULTSThirteen new single nucleotide polymorphisms (SNPs) and a micro-satellite sequence were found in the glycoprotein genes from the 112 random samples, in which two SNPs (1333G/A and 1960G/A) in ITGB3 gene result in two amino acid change (V419M and E628K) on glycoprotein GPIIIa.

CONCLUSIONNew variants in platelet membrane glycoprotein genes were identified, which may lead to structure change of platelet membrane glycoprotein and affect the accuracy of partial HPA genotyping method.

Antigens, Human Platelet ; genetics ; Humans ; Isoantigens ; genetics ; Platelet Membrane Glycoproteins ; genetics ; Polymorphism, Single Nucleotide

OBJECTIVETo analyze clinical symptoms and disease-causing mutations of corneodesmosin (CDSN) gene in a Chinese family affected with hypotrichosis simplex of the scalp and to establish a method for prenatal diagnosis.

METHODSFamily survey and clinical examinations were carried out to determine the inheritance pattern. Three patients and 7 unaffected relatives from the family, in addition with 100 unrelated healthy controls were recruited. Genomic DNA from peripheral blood leukocytes was extracted. Five pairs of primers were designed based on the CDSN gene sequence. Exons and flanking regions of the CDSN gene were amplified using polymerase chain reaction (PCR). Potential mutations were analyzed through direct sequencing and comparison by BLAST.

RESULTSThe type of alopecia of the family was diagnosed as hypotrichosis simplex of the scalp with an autosomal dominant inheritance pattern. A nonsense mutation (C717G) in cDNA sequence of the CDSN gene was identified in all three patients of the family, which resulted in a premature stop codon (Y239X). The same mutation was not found among healthy members of the family and 100 healthy controls.

CONCLUSIONA Chinese family was diagnosed with hypotrichosis simplex of the scalp, which was caused by a novel nonsense mutation (Y239X) in the CDSN gene.

Alopecia ; genetics ; China ; Codon, Nonsense ; Female ; Glycoproteins ; genetics ; Humans ; Hypotrichosis ; genetics ; Male ; Middle Aged ; Pedigree ; Scalp

China ; epidemiology ; Hemagglutinin Glycoproteins, Influenza Virus ; genetics ; Humans ; Influenza B virus ; genetics ; Influenza, Human ; epidemiology ; genetics

To understand the genetic characteristics of hemagglutinin (HA) and neuraminidase (NA) of type B influenza viruses in Guangzhou in 2006, three virus strains from etiology surveillance and seven strains from outbreaks were investigated. Genome RNAs of type B influenza viruses were extracted and reverse-transcripted into cDNAs using random primers. The whole-length DNA of HA and NA were amplified by polymerase chain reaction (PCR), cloned into T-A plasmid and sequenced, and analyzed phylogenetically by DNAstar software. The results showed that the HA of type B influenza viruses were similar and the homology were more than 99%. The type B influenza viruses belong to Victoria lineage. The NA of the type B influenza viruses were similar and the homology were more than 98%. Phylogenetic trees of HA and NA showed that the isolates from etiology surveillance formed a cluster, and the isolates from outbreaks were separated from the cluster. The homology of the type B influenza viruses with B/Shanghai/361/2002, which is the WHO recommended influenza vaccine strain in 2005-2006, were 88.9%-89.7%. It suggested the protective effect of influenza vaccine against type B influenza viruses used in 2005-2006 in Guangzhou may not be afforded.
China ; Hemagglutinin Glycoproteins, Influenza Virus ; genetics ; Influenza B virus ; genetics ; Neuraminidase ; genetics ; Phylogeny ; Time Factors

The aim of this study was to clone the chicken zp1 gene encoding zona pellucida 1 (Zp1) and investigate its tissues expression profile and its effect on osteoblast mineralization. The expression level of zp1 was quantified in various tissues of laying hens and in the tibia of the pre- and post-sexual maturity by RT-qPCR. Zp1 overexpressed vector was transfected into chicken calvarial osteoblasts which were induced differentiation for 8 days, and the extracellular mineral and the expression of mineralization-related genes were detected. The full-length chicken zp1 gene is 3 045 bp, encoding 958 amino acids residuals, and has two N-glycosylation sites. The highest expression level of the zp1 gene was found in the liver, followed by the tibia and yolk membrane, while no expression was detected in the heart and eggshell gland. Compared with the pre-sexual maturity hens, the concentration of estrogen (E2) in plasma, the content of glycosaminoglycan (GAG) and the expression level of the zp1 gene in the tibia with post-sexual maturity were higher. The extracellular matrix and the level of osteoblast mineralization-related genes showed a significantly upregulated expression in chicken calvarial osteoblasts with Zp1 overexpressed and addition of estrogen. The expression of the zp1 gene is tissue-specific and positively regulated osteoblast mineralization under the action of estrogen, laying the foundation for elucidating the functional properties of Zp1 in chicken bones during the egg production period.
Female ; Animals ; Zona Pellucida Glycoproteins ; Membrane Glycoproteins/metabolism* ; Chickens/genetics* ; Egg Proteins/metabolism* ; Receptors, Cell Surface ; Estrogens

OBJECTIVES: To investigate the effects of injury time, postmortem interval (PMI) and postmortem storage temperature on mRNA expression of glycoprotein non-metastatic melanoma protein B (Gpnmb), and to establish a linear regression model between Gpnmb mRNA expression and injury time, to provide aimed at providing potential indexes for injury time estimation. METHODS: Test group SD rats were anesthetized and subjected to blunt contusion and randomly divided into 0 h, 4 h, 8 h, 12 h, 16 h, 20 h and 24 h groups after injury, with 18 rats in each group. After cervical dislocation, 6 rats in each group were collected and stored at 0 ℃, 16 ℃ and 26 ℃, respectively. The muscle tissue samples of quadriceps femoris injury were collected at 0 h, 12 h and 24 h postmortem at the same temperature. The grouping method and treatment method of the rats in the validation group were the same as above. The expression of Gpnmb mRNA in rat skeletal muscle was detected by RT-qPCR. The Pearson correlation coefficient was used to evaluate the correlation between Gpnmb mRNA expression and injury time, PMI, and postmortem storage temperature. SPSS 25.0 software was used to construct a linear regression model, and the validation group data was used for the back-substitution test. RESULTS: The expression of Gpnmb mRNA continued to increase with the prolongation of injury time, and the expression level was highly correlated with injury time (P<0.05), but had little correlation with PMI and postmortem storage temperature (P>0.05). The linear regression equation between injury time (y) and Gpnmb mRNA relative expression (x) was y=0.611 x+4.489. The back-substitution test proved that the prediction of the model was accurate. CONCLUSIONS The expression of Gpnmb mRNA is almost not affected by the PMI and postmortem storage temperature, but is mainly related to the time of injury. Therefore, a linear regression model can be established to infer the time of injury.
Animals ; Rats ; Glycoproteins ; Linear Models ; Melanoma ; Membrane Glycoproteins/genetics* ; Postmortem Changes ; Rats, Sprague-Dawley ; RNA, Messenger/metabolism* ; Time Factors

Carrier Proteins ; genetics ; Cloning, Molecular ; DNA, Complementary ; Humans ; Liver ; chemistry ; Membrane Glycoproteins ; genetics