Aged ; Female ; Humans ; Male ; Middle Aged ; Pharyngeal Diseases ; pathology ; Polyps ; pathology

Adolescent ; Adult ; Aged ; Endocrine Surgical Procedures ; methods ; Endoscopy ; Female ; Humans ; Male ; Middle Aged ; Parathyroid Neoplasms ; surgery ; Thyroid Neoplasms ; surgery ; Young Adult

AIMTo review the accumulated 30 patients with different area of Y chromosome microdeletions, focusing on their correlation with the clinical and pathological findings.

METHODSA total of 334 consecutive infertile men with azoospermia (218 patients) and severe oligoasthenospermia (116 patients) were screened. Complete physical and endocrinological examinations, general chromosome study and multiplex polymerase chain reaction assay to evaluate the Y chromosome microdeletion were performed. Ten patients received testicular biopsy. Then the clinical and pathological findings were analyzed with reference to the areas of Y chromosome microdeletion.

RESULTSThere is a decline of the percentage of sperm appearing in semen in the group that the gene deletion region from AZFc to AZFb. The clinical evidence of the impairment (decreased testicular size and elevated serum FSH) is also relevantly aggravated in this group. However, the pathology of testicular biopsy specimen was poorly correlated with the different deletion areas of the Y chromosome, which may be due to the limited number of specimens.

CONCLUSIONThe clinical correlation of spermatogenic impairment to the different AZF deletion regions may provide the information for the infertile couples in pre-treatment counseling.

Adult ; Aged ; Chromosome Deletion ; Chromosomes ; Chromosomes, Human, Y ; Counseling ; Gene Deletion ; Humans ; Male ; Middle Aged ; Oligospermia ; pathology ; Sperm Injections, Intracytoplasmic ; Testis ; pathology ; Tissue Embedding

OBJECTIVETo analyze and compare the constituents of the essential oils from the fresh and dried pericarps of Citrus sinensis.

METHODThe essential oils from the fresh and dried pericarps of C. sinensis were extracted by water steam distillation method and analyzed by GC-MS.

RESULT28 and 25 components were identified from the essential oils of the fresh and dried pericarps of C. sinensis respectively, 37 components were identified from both samples totally, among which 26 components were identified in the essential oils of the pericarps of C. sinensis for the first time.

CONCLUSIONThe most components in both oil samples were similar and main component of the both oils was limonene (90. 16% and 77. 34%).

Citrus sinensis ; chemistry ; Cyclohexenes ; analysis ; chemistry ; isolation & purification ; Fruit ; chemistry ; Gas Chromatography-Mass Spectrometry ; methods ; Oils, Volatile ; analysis ; chemistry ; isolation & purification ; Plant Oils ; analysis ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Terpenes ; analysis ; chemistry ; isolation & purification

Nine compounds were isolated from an ethanol extract of the roots of K. roxburghii by using a combination of various chromatographic techniques including column chromatography over silica gel, MCI gel, Sephadex LH-20, and reversed-phase HPLC. On the basis of physical-chemical properties and spectroscopic data analysis, their structures were identified as munjistin (1), 1-methoxy-3,6-dihydroxy-2-hydroxymethyl-9,10-anthraquinone (2), 1,2,3-trihydroxy-9,10-anthraquinone (3), arjunolic acid (4), hyptatic acid-A (5), hyptatic acid-B (6), 2α,3β,24-trihydroxyurs-12-en-28-oic acid (7), 2α,3β,23-trihydroxyurs-12-en-28-oic acid (8), and daucosterol (9). Compounds 1-9 were obtained from this genus for the first time.
Anthraquinones ; chemistry ; isolation & purification ; Rubiaceae ; chemistry ; Triterpenes ; chemistry ; isolation & purification

OBJECTIVETuberculosis remains a severe public health issue, and the Beijing family of mycobacterium tuberculosis (M. tuberculosis) is widespread in East Asia, especially in some areas in China, like Beijing and Tianjin. This study aimed at determining the mutation patterns of drug-resistant Beijing strains of M. tuberculosis isolated from Tianjin, China.

METHODSA total of 822 M. tuberculosis isolates were screened for drug resistance by an absolute concentration method and the genotype was identified by PCR. 169 drug-resistant isolates of the Beijing family were analyzed for the potential mutations in the rpoB, katG, inhA promoter region and in rpsL, rrs and embB genes, which are associated with resistance to rifampin (RFP), isoniazid (INH), streptomycin (SM) and ethambutol (EMB) respectively by PCR and DNA sequencing.

RESULTSFifty-eight out of 63 RFP-resistant isolates were found to carry the mutations within the 81-bp RFP resistance determining region (RRDR) of the rpoB gene and the most frequent mutations occurred at codon 531 (44.4%), 526 (28.6%), and 516 (7.9%) respectively. 16 mutation patterns affecting 12 different codons around the RRDR of rpoB were found. Of 116 INH-resistant isolates, 56 (48.3%) had the mutation of katG 315 (AGC-->ACC) (Ser-->Thr), 3 (2.6%) carried S315N (AGC-->AAC) and 27 (16.0%) had the mutation of inhA-15A-->T. 84 out of 122 SM-resistant isolates (68.9%) displayed mutations at the codons 43 or 88 with AAG-->AGG (Lys-->Arg) of the rpsL gene and 22 (18.0%) with the mutations at positions 513A-->C, 516C-->T or 905 A-->G in the rrs gene. Of 34 EMB-resistant isolates, 6 had mutation with M306V (ATG-->GTG), 3 with M306I (ATG-->ATT), 1 with M306I (ATG-->ATA), 1 with D328Y (GAT-->TAT), 1 with V348L (GTC-->CTC), and 1 with G406S (GGC-->AGC) in the embB gene.

CONCLUSIONThese novel findings extended our understanding of resistance-related mutations in the Beijing strains of M. tuberculosis and may provide a scientific basis for development of new strategies for diagnosis and control of tuberculosis in China and other countries where Beijing strains are prevalent.

Base Sequence ; China ; DNA Primers ; Drug Resistance, Microbial ; Mycobacterium tuberculosis ; genetics ; Polymerase Chain Reaction

mTOR (mammalian target of rapamycin) is the center for cellular activities. It controls many cell activities via inhibiting apoptosis and promoting cell growth. Rheb can activate mTOR signaling pathway and participate in genesis and development of multiple cancers. This study was purposed to explore the underlying role of Rheb in human myeloid leukemia by using the myeloid leukemia cell lines. Two myeloid leukemia cell lines HL-60 and K562 overexpressing Rheb were established with retrovirus containing Rheb. The mRNA and protein expressions of Rheb were determined by Real-Time PCR and Western blot respectively. Cell proliferation rate was examined by CCK-8 assay and apoptosis rate was analyzed using Annexin V and 7-AAD double-staining. The results showed that Rheb was overexpressed in both HL-60 and K562 cell lines. The Rheb overexpression cell lines were successfully established. It is found that overexpression of Rheb could promote cell growth. Furthermore, the overexpression of Rheb could accelerate cells entering into G2/M phase (P < 0.01), while did not affect the apoptosis. It is concluded that Rheb overexpression promotes myeloid leukemia cell proliferation through accelerating cell cycle progression.
Cell Cycle ; Cell Proliferation ; HL-60 Cells ; Humans ; K562 Cells ; Monomeric GTP-Binding Proteins ; metabolism ; Neuropeptides ; metabolism ; Ras Homolog Enriched in Brain Protein ; Signal Transduction

Adolescent ; Adult ; Aged ; Antibodies, Viral ; blood ; Child ; Child, Preschool ; China ; epidemiology ; Female ; Humans ; Infant ; Influenza A virus ; immunology ; Influenza B virus ; immunology ; Influenza, Human ; epidemiology ; virology ; Male ; Middle Aged ; Seroepidemiologic Studies

BACKGROUNDTraditional techniques used for harvesting the pectoralis major myocutaneous (PMMC) flap have accompanying disadvantages, such as the necessity for an upper chest skin incision, the bulkiness of myocutaneous tissue at the pedicle of the flap, and the risk of total or partial necrosis of flap tissue. The aim of this study was to develop a safe and fast method for preparing PMMC island flaps using preoperative ultrasonography for vessel detection.

METHODSForty-one PMMC island flaps were used for one-stage reconstruction of head and neck defects, including 21 cases in the treatment group and 20 cases in the control group. In the treatment group, ultrasonography was used to mark out the course of the thoracic branches of the thoracoacromial artery and the lower end of this artery perforating from the fascia into the muscles, as well as the largest perforating branch of the fourth or fifth internal mammary artery entering the PMMC flap. A line, from the lower end of the thoracic branch to the largest perforating branch of the fourth or fifth internal mammary artery, was drawn to determine the axis of the PMMC flap. In the control group, PMMC island flaps were designed according to conventional methods without using ultrasonography.

RESULTSAccording to the ultrasonic marks, the distance from lower end of thoracic branch to the midpoint of the margin of the inferior clavicular was (5.1 ± 1.2) cm. The time from designing to transferring the island flap was significantly shorter in the treatment group ((51.0 ± 10.5) minutes) compared with the control group ((78.0 ± 13.9) minutes, P < 0.01). The rate of partial necrosis was 4.7% (1/21) in the treatment group and 35.0% (7/20) in the control group. There was one case of flap failure in the control group due to vascular injury during vascular pedicle dissection.

CONCLUSIONPreoperative vessel detection by ultrasonography facilitates easy and safe harvesting of the true PMMC island flap.

Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Pectoralis Muscles ; surgery ; Preoperative Period ; Reconstructive Surgical Procedures ; methods ; Surgical Flaps ; Ultrasonography ; methods

OBJECTIVETo investigate the association between the genetic variations of six transmembrane protein of prostate 2 (STAMP2) with type 2 diabetes mellitus (T2DM) in Xinjiang Uygur population.

METHODSA case-control study was conducted based on epidemiological investigation. A total of 1838 Uygur subjects were selected and divided into two groups: T2DM group (n=274) and control group (n=1564). All exons, flanking introns, and the promoter regions of STAMP2 gene were sequenced in 48 Uygur Xinjiang population with diabetes. Representative variations selected were genotyped by TaqMan-PCR method in all individuals.

RESULTSTen novel and 6 known variations in the STAMP2 gene were identified. The distribution of genotype rs8122 significantly differed between T2DM group and control group (P=0.05), whereas the distribution of genotypes rs1981529 and rs34741656 showed no such difference. The fasting insulin in the total cohort and homeostasis model of assessment index in females showed significant difference between these two groups (P<0.05), while the adjusted P value showed no statistical significance (P>0.05). In the male population, the different genotypes of rs8122 variation of STAMP2 gene were not significantly different (P>0.05).

CONCLUSIONThree polymorphisms (rs8122, rs1981529 and rs34741656) of STAMP2 gene may be not related with T2DM in Xinjiang Uygur population.

Adult ; Asian Continental Ancestry Group ; genetics ; Case-Control Studies ; China ; Diabetes Mellitus ; ethnology ; genetics ; Female ; Genotype ; Humans ; Male ; Membrane Proteins ; genetics ; Middle Aged ; Oxidoreductases ; genetics ; Polymorphism, Genetic ; Promoter Regions, Genetic