Background Indirect traumatic optic neuropathy (TON) is an acute injury of the optic nerve associated with severe visual dysfunction,which may be a result of secondary mechanical injury and vascular disorder of the optic nerve due to trauma.We analyzed the natural course of axonal loss and blood flow disturbances in patients with indirect TON to find a possible therapeutic window.Methods A cohort of 54 patients with indirect TON recruited between October 2008 and October 2010 at Beijing Tongren Hospital was retrospectively analyzed.The patients were divided into no light perception group (NLP) and better than NLP (btNLP) group.Specifically,the thickness of the retinal nerve fiber layer (RNFL) measured by spectral domain optical coherence tomography (SD-OCT),and hemodynamic parameters of the ophthalmic artery (OA),central retinal artery (CRA) and posterior ciliary artery (PCA) were determined.Results Two weeks after injury,there was a statistically significant decrease in the thickness of RNFL in the btNLP group as compared with the fellow control eyes (P ＜0.05).In contrast,in the NLP group,RNFL thickness slightly increased for 2 weeks following injury,then overtly reduced after 4 weeks (P ＜0.05).Peak systolic velocity (PSV) of CRA was significantly decreased 4 weeks after injury (P ＜0.05) in both the NLP group and btNLP group (P ＜0.05).The thickness of RNFL in the NLP group was negatively correlated with PSV of CRA after 1 week of injury (P ＜0.05,r=-0.962).Conclusions SD-OCT is a useful supplement in detecting the axonal loss in TON.The dynamic change of the thickness of RNFL appears to correlate with the hemodynamic disturbances in the natural course of TON.The first 2 weeks following an injury is critical and should be considered as the therapeutic window for TON patients.

Ten compounds were isolated from the leaves of Rhizophora stylosa, one kind of mangrove plants distributed in the tropical and subtropical areas of the world. Their structures were identified as taraxerone (1), taraxerol (2), beta-sitosterol (3), careaborin (4), cis-careaborin (5), beta-daucosterol (6), isovanillic acid (7), protocatechuic acid (8), astilbin (9) and rutin (10), among which compound 9 and 10 were reported in this plant for the first time. Of these compounds, Compound 2 has been confirmed to have the abilities to inhibit the growth of Hela and BGC-823 with IC50 of 73.4 micromol x L(-1) and 73.3 micromol x L(-1), respectively. Compound 5 could inhibit the growth of BGC-823 and MCF-7 with IC50 of 45.9 micromol x L(-1) and 116.0 micromol x L(-1), respectively. Compound 9 and 10 were firstly reported to stimulate the proliferation of mice splenic lymphocytes markedly in a dose-dependent manner.
Animals ; Antineoplastic Agents, Phytogenic ; chemistry ; isolation & purification ; pharmacology ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Flavonols ; chemistry ; isolation & purification ; pharmacology ; Humans ; Inhibitory Concentration 50 ; Lymphocytes ; cytology ; Mice ; Molecular Structure ; Oleanolic Acid ; analogs & derivatives ; chemistry ; isolation & purification ; pharmacology ; Plant Leaves ; chemistry ; Rhizophoraceae ; chemistry ; Rutin ; chemistry ; isolation & purification ; pharmacology ; Spleen ; cytology ; Triterpenes ; chemistry ; isolation & purification ; pharmacology

OBJECTIVEDespite progress in antibiotic therapy and intensive care, childhood bacterial meningitis (BM) remains a devastating disease. We conducted this study to investigate the changes in clinical characteristics, the etiologic agents and antimicrobial susceptibility of BM during the past 10 years in children under 14 years of age.

METHODSThese 126 patients were divided into two groups according to their date of admission. Group 1 included 64 patients admitted from January 1998 to December 2002, and group 2 included 62 cases admitted from January 2003 to December 2007. All pediatric medical charts of them were reviewed.

RESULTSThe predominant isolated bacteria from CSF were coagulase-negative staphylococcus (17/62, 27.4%) and Escherichia coli (9/62, 14.5%) in group 2. The resistance rate of staphylococcus against oxacillin (MRS) was 68.4% (13/19) in group 2, significantly higher than that of group 1 (16.7%, 2/12). Among 126 cases, 42 had seizure attack and 16 had consciousness disturbance, the proportions of them in group 2 (11/62, 17.7%; 4/62, 6.4%) were lower than those in group 1 (31/64, 48.4%; 12/64, 18.8%, P < 0.05). Cases in group 2 survived with complications [13/62 (21.0%)] and sequelae [11/62 (17.7%)] were lower than those in group 1 (24/64, 37.5%, 23/64, 35.9%, P < 0.05), but the rate of empirical therapy modification in group 2 (21/62, 33.9%) was higher than that in group 1 (7/64, 10.9%, P < 0.01).

CONCLUSIONThe predominant bacteria in children with BM are staphylococcus and Escherichia coli in recent years. The antibiotic resistance rate of bacteria has been higher year after year. The clinical patterns of pediatric BM have changed with a decrease in clinically serious cases, complications and sequelae, but an increase in modification of empirical therapy.

Anti-Bacterial Agents ; pharmacology ; Child ; Child, Preschool ; Cross Infection ; microbiology ; Drug Resistance, Bacterial ; Escherichia coli ; drug effects ; isolation & purification ; Female ; Humans ; Infant ; Infant, Newborn ; Male ; Meningitis, Bacterial ; epidemiology ; microbiology ; Retrospective Studies ; Staphylococcus epidermidis ; drug effects ; isolation & purification

Objective To evaluate the availability of tonsillectomy in patients with obstructive sleep apnea hypopnea syndrome (OSAHS) staged as Friedman Ⅰ.Methods Fifty-six patients with OSAHS in Friedman stage Ⅰ who refused uvulopalatopharyngoplasty (UPPP) received tonsillectomy merely from January 2004 to March 2010.There were 20 mild,24 moderate and 12 serious patients respectively in this group.The other 68 OSAHS patients in Friedman stage Ⅰ received UPPP at the same time as matched group,including 26 mild,28 moderate and 14 serious patients.Results There was no significant difference before operation in terms of age,body mass index,apnea hypopnea index ( AHI),the lowest pulse oxygen saturation ( SPO2 ) and average SPO2 between the two groups.There were significant difference in mean length of operation( U =0.000,P ＜0.01 ),hospitalization day( U =458.5,P ＜0.01 ),visual analogue scale after surgery( U =0.000,P ＜ 0.01 ) in these two group.There was no significant difference in surgical effective rate between the two groups ( x2 =0.857,P ＞ 0.05 ).There was also no significant difference in terms of age,body mass index,AHI,the lowest SPO2 and average SPO2 after operation between the two groups (t test P ＞ 0.05).The surgical effective rate for the long term of the two groups was equal ( x2 =0.857,P ＞ 0.05).Even patients with serious OSAHS in Friedman stage Ⅰ,the surgical effective rate of the two groups was equivalent (Fisher's exact test,P ＞ 0.05 ).Conclusions Tonsillectomy is a safe and effective surgery for OSAHS in Friedman stage Ⅰ,whose main structural load lies in the hypertrophic tonsil. It should be the first surgical choice for OSAHS in Friedman stage Ⅰ.

OBJECTIVETo explore the quality of life and related social support among people living with HIV/AIDS with related factors.

METHODS331 people living with HIV/AIDS and 148 of their family members were selected using a typical sampling method. Questionnaires on general conditions, tables on history of infection, generic quality of life inventory-74 (GQOLI-74) and social support scale (SSS) were used.

RESULTSData from one-way analysis suggested that people living with HIV/AIDS and their family members with the different sexs, different villages and different cultural backgrounds had differences in GQOLI-74 scores (P < 0.05) while people living with HIV/AIDS with the different villages had differences in SSS scores (P < 0.05). Results from Multiple linear regression analysis revealed that being elderly and negative life events were negatively associated with social support (P < 0.05), while factors as more advanced educational background, harmonious neighborhood relationship and having bother pouring nature were the predictive factors (P < 0.05).

CONCLUSIONMany factors might affect dimensions of quality of life among people living with HIV/AIDS and their family members in rural areas of northern Anhui. Community care and social support of HIV/AIDS should still be greatly enhanced in the countryside of China. A community care mode based on family and neighborhood was expected to be developed.

Acquired Immunodeficiency Syndrome ; complications ; ethnology ; psychology ; China ; Cultural Characteristics ; Family Relations ; Female ; Humans ; Male ; Quality of Life ; Social Support

Y chromosome is a male-specific paternal inherited chromosome. The STR markers on Y chromosome have been widely used in forensic practices. This article summarizes the characteristics of Y-STR and some factors are considered of selecting appropriate Y-STR markers for Chinese population. The prospects of existing and potential forensic applications of Y-STR profiles are discussed including familial excluding, familial searching, crowd source deducing, mixture sample testing, and kinship identifying. The research, development, verification of Y-STR kit, Y-STR mutation rate, and search software are explored and some suggestions are given.
Asian People/genetics* ; Chromosomes, Human, Y ; DNA/genetics* ; DNA Fingerprinting ; Databases, Nucleic Acid ; Female ; Forensic Medicine/methods* ; Genetics, Population ; Genotype ; Humans ; Male ; Microsatellite Repeats ; Mutation ; Polymerase Chain Reaction ; Reagent Kits, Diagnostic ; Software

Objective To observe the effects of ryanodine on rapamycin treated endothelial outgrowth cells (EOCs). Methods The mononuclear cells were harvested from umbilical cord blood by Ficoll density gradient centrifugation, then induced into EOCs tnd expanded in vitro. The endothelial characteristics of EOCs were identified by immunostaining and fluorescent staining. The EOCs were pretreated with or without ryanodine ( 10 μmol/L) for 1 h, and then treated with or without rapamycin ( 10nmoL/L) for 24 h. Proliforation was evaluated by CCK8 and migration was measured by Transwell. The protein expression of EOCs was evaluated by immunobloting technique with total eNOS antibody and phosphoeNOS(Thr495) antibody. Results Compared with control group, the proliferation and migration capacities of EOCs were significantly reduced while the phosphorylation of eNOS ( Thr495 ) protein was significantly upregulated in rapamycin group( P ＜ 0. 05 ), expression of total eNOS was not affected by rapamycin ( P ＞0. 05). Compared with rapamycin group, the proliferation and migration capacities of EOCs were significantly increased and the phosphorylation of eNOS(Thr495) protein was significantly downregnlated in ryanodine + rapamycin group( P ＜0. 05). The proliferation and migration capacities, the phosphorylation of eNOS (Thr495) protein and the expression of total eNOS were not affected by ryanodine alone ( P ＞ 0. 05 ).ConclusionsRapamycin reduced proliferation and migration capacities while upregulated the phosphorylation of eNOS (Thr495) protein of EOCs and these effects could bepartly reversed by cotreatment with ryanodine.

BACKGROUNDIndirect traumatic optic neuropathy (TON) is an acute injury of the optic nerve associated with severe visual dysfunction, which may be a result of secondary mechanical injury and vascular disorder of the optic nerve due to trauma. We analyzed the natural course of axonal loss and blood flow disturbances in patients with indirect TON to find a possible therapeutic window.

METHODSA cohort of 54 patients with indirect TON recruited between October 2008 and October 2010 at Beijing Tongren Hospital was retrospectively analyzed. The patients were divided into no light perception group (NLP) and better than NLP (btNLP) group. Specifically, the thickness of the retinal nerve fiber layer (RNFL) measured by spectral domain optical coherence tomography (SD-OCT), and hemodynamic parameters of the ophthalmic artery (OA), central retinal artery (CRA) and posterior ciliary artery (PCA) were determined.

RESULTSTwo weeks after injury, there was a statistically significant decrease in the thickness of RNFL in the btNLP group as compared with the fellow control eyes (P < 0.05). In contrast, in the NLP group, RNFL thickness slightly increased for 2 weeks following injury, then overtly reduced after 4 weeks (P < 0.05). Peak systolic velocity (PSV) of CRA was significantly decreased 4 weeks after injury (P < 0.05) in both the NLP group and btNLP group (P < 0.05). The thickness of RNFL in the NLP group was negatively correlated with PSV of CRA after 1 week of injury (P < 0.05, r = -0.962).

CONCLUSIONSSD-OCT is a useful supplement in detecting the axonal loss in TON. The dynamic change of the thickness of RNFL appears to correlate with the hemodynamic disturbances in the natural course of TON. The first 2 weeks following an injury is critical and should be considered as the therapeutic window for TON patients.

Adult ; Female ; Humans ; Male ; Middle Aged ; Nerve Fibers ; physiology ; Optic Nerve ; physiology ; Optic Nerve Injuries ; physiopathology ; Retinal Neurons ; physiology ; Retrospective Studies ; Tomography, Optical Coherence

OBJECTIVETo observe the changes of serum testosterone after allotransplantation of Leydig cells in rats.

METHODSLeydig cells were isolated from the testes of SD rats with the Percoll technique and serum testosterone of the receptors was determined once a month for 3 successive times.

RESULTSAfter allotransplantation of Leydig cells, the serum testosterone level of the receptors increased gradually, significantly higher at 3 months than that of the normal rats younger than 2 months old.

CONCLUSIONAllotransplantation of Leydig cells has a promising application value in the treatment of male primary hypogonadism.

Animals ; Cell Transplantation ; Leydig Cells ; cytology ; transplantation ; Male ; Rats ; Rats, Sprague-Dawley ; Testosterone ; blood

OBJECTIVETo investigate the diagnostic value of contrast-enhanced ultrasonography (CEUS) in preoperative T-staging of gastric cancer.

METHODSA sulfur hexafluoride-filled microbubble ultrasound contrast agent and a continuous real-time imaging technique of contrast pulse sequencing were used. Normal gastric wall was examined by CEUS in 8 healthy volunteers and the results were compared with the findings on multislice computed tomography. Sixty-two patients with gastric cancer proved by biopsies who received preoperative CEUS examination were involved in this study, and the CEUS result was compared with postoperative pathological findings.

RESULTSThe normal gastric wall presented a one-layer structure in the portal venous phase and a three-layer structure in the arterial and equilibrium phase including a slightly hyper-enhanced inner layer, a hypo-enhanced intermediate layer, and a markedly hyper-enhanced outer layer, which corresponded histologically to the mucosal, submucosal, and muscular-serosal layer, respectively. The accuracy of transabdominal ultrasonography and CEUS in determining the T stage of gastric cancer was 72.9% and 88.1% respectively, and the difference was statistically significant (chi(2)=4.37, P=0.036).

CONCLUSIONSCEUS shows the normal gastric wall as a one- or a three-layer structure, which provides a theory base for CEUS in preoperative T-staging of gastric cancer. CEUS is a useful diagnostic method for preoperative T-staging of gastric cancer.

Adult ; Aged ; Contrast Media ; Female ; Humans ; Male ; Middle Aged ; Neoplasm Staging ; methods ; Stomach Neoplasms ; diagnostic imaging ; pathology ; Sulfur Hexafluoride ; Ultrasonography ; methods