Objective To explore the therapeutic effect of recombinant human growth hormone (rhGH) on the stature of children with Turner syndrome(TS) and analyze its influencing factors in treatment.Methods Twelve children with TS were selected in the outpatient department of West China second hospital of sichuan university between Jan.2004 to Jun.2007.They were diagnosed as TS with karyotypically.The average age was 4.9-16.9(11.28?3.64)years old.Every patient must be made sure to have normal liver function,kidney funtion and MRI for hypothalamus and pituitary before enrollment.All cases were never treated with growth hormone or estrin.Not all the patients had the same manifestations:12 cases with short stature,9 cases with cubitus valgue,8 cases with broad chest,4 cases with low posterior hairline,2 cases with webbed neck,11 cases without pubes and armpit hair,none with menarche.Every patient must be made sure to have normal liver function,kidney funtion and MRI for hypothalamus and pituitary before enrollment.rhGH was used subcutaneously 3-5 cm around navel eve-ry night before sleep.Average rhGH dose was 0.16 IU/(kg?d)[0.15-0.18 IU/(kg?d)],and height standard deviation score (HtSDS) was calculated and compared before and after rhGH treatment,and adverse reactions were observed.Results The duration of treatment was different:9 cases for 12 cases months,2 cases for 15 cases months and 1 case for 18 cases months.The average height increase rat was (0.55?0.15) cm / month.Difference of HtSDS existed before and after treatment by t test(t=2.87 P

Objective To explore the clinical feature,diagnosis,treatment and prognosis of Hashimoto′s thyroiditis(HT) combined with hyperthyroidism in children.Methods The clinical features of 56 children with HT combined with hyperthyroidism,including clinical features,complications,thyroid hormone,thyroglobulin antibody(TGAb),thyroid peroxidase antibody(TPOAb),the detection of ultrasonic imaging and fine needle aspiration biopsies,diagnosis,treatment and prognosis were analyzed.Results The proportion of men to women was 16 in all 56 children,and the mean age at diagnosis was(9.95?2.09) years.The percentage of positive TGAb and TPOAb were 93% and 98%,respectively in all the 56 children.One child was diagnosed as HT combined with hyperthyroidism coexistent and myasthenia gravis type Ⅰ.The duration of hyperthyroidism ranged from 3 to 24 months.There were 14 children who had hypothyrodism and 8 children were euthyroid in all the 56 children.Conclusions Children with HT hyperthyroidism are more frequent in young females.TGAb and TPOAb are important markers for the diagnosis of HT.Pharmacotherapy is the first choice to treat HT hyperthyroidism.Hyperthyroidism is a clinical process of HT,and the percentage of children with hypothyrodism is increasing along with the development of disease.

OBJECTIVETo explore the role of CD(8)(+)CD(28)(-) T regulatory cells (Tr) in the immunological pathogenesis of acute infection with Epstein-Barr virus in children.

METHODSThe present study enrolled 25 children with infectious mononucleosis (IM) and 25 age-matched healthy children. Flow cytometric analysis was performed to detect the percentage of CD(3)(+), CD(3)(+)CD(4)(+), CD(3)(+)CD(8)(+), CD(8)(+)CD(28)(+) by determining the ratio of positive cells in lymphocytes. Reverse transcriptase-polymerase chain reaction (RT-PCR) and real-time PCR were used to analyze IL-6, IL-10, IFN-gamma expression in CD(8)(+)CD(28)(-) Tr cells and ILT-3, ILT-4 expression in monocytes/macrophages.

RESULTSThe proportions of CD(8)(+)CD(28)(-)T cells in children with acute-phase IM was significantly higher than those in the controls (P < 0.01). The expression level of IL-6, IL-10, IFN-gamma, ILT-3, ILT-4 mRNA significantly increased compared to those of the controls (P < 0.01).

CONCLUSIONThe CD(28) expressed on CD(8)(+) T cells in vivo is gradually lost with age and CD(8)(+)CD(28)(-) cells increase up 50% to adult. EBV can directly infect B cells, trigger CD(8)(+) CTL response and destroy the target cells to cause serious immunopathological lesion. Therefore we speculate that the expansion of CD(8)(+)CD(28)(-) Tr cells in children with IM may be an adaptive immune response to avoid serious inflammation and autoimmune reactions.

CD28 Antigens ; immunology ; CD8-Positive T-Lymphocytes ; immunology ; Case-Control Studies ; Child ; Child, Preschool ; Cytokines ; immunology ; Epstein-Barr Virus Infections ; immunology ; Female ; Flow Cytometry ; Herpesvirus 4, Human ; Humans ; Infectious Mononucleosis ; immunology ; virology ; Male ; Membrane Glycoproteins ; metabolism ; Receptors, Cell Surface ; metabolism ; Receptors, Immunologic ; metabolism ; T-Lymphocytes, Regulatory ; immunology

Adult ; Aged ; Female ; Humans ; Immunocompromised Host ; Male ; Pneumocystis carinii ; Pneumonia, Pneumocystis ; diagnostic imaging ; immunology ; physiopathology ; Radiography ; Remission, Spontaneous

OBJECTIVETo explore the association of blood and cerebrospinal fluid (CSF) IgG contents and the severity of craniocerebral injury.

METHODSTotalling 143 patients with craniocerebral injury were divided into 3 groups according Glasgow Coma Scale (GCS) scores, namely the mild injury group with GCS score of 12-15 (n=41), moderate injury group with GCS score of 9-11 (n=71) and severe injury group (GCS score 3-8, n=32). Another 9 patients with congenital hydrocephalus were also recruited as the control group. The CSF and blood samples were collected from these patients to measure the IgG contents 4 and 14 days and 1, 2, and 6 months after the injury, respectively. Physical disabilities of the patients were estimated with Rappaport's disability rating scale (DRS), whose correlations with CSF and blood IgG contents were analyzed.

RESULTSIn the early stage of moderate to severe brain injury, the IgG content was lowered significantly in the blood but increased in CSF as compared with the control patients (P<0.05), and the changes in CSF and blood IgG displayed a significant correlation with the severity of the injury (r=0.950, P<0.01). During the recovery of severe brain injury, DRS score was in inverse correlation with blood IgG content but in positive correlation with CSF IgG content (Spearman's correlation coefficient of 0.800, P<0.05).

CONCLUSIONIn the early stage of brain injury, detection of blood IgG content may help with the assessment of the injury severity. During the recovery of the injury, dynamic monitoring of blood and CSF IgG contents provides clues of the outcome of the patients and benefit the modification of the treatment plan.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Brain Injuries ; immunology ; pathology ; Female ; Glasgow Coma Scale ; Humans ; Immunoglobulin G ; blood ; cerebrospinal fluid ; Male ; Middle Aged ; Prognosis

Aged ; Echinocandins ; administration & dosage ; therapeutic use ; Humans ; Leukemia, Myelomonocytic, Chronic ; pathology ; Lipopeptides ; Male ; Pneumonia, Pneumocystis ; diagnosis ; drug therapy ; pathology ; Trimethoprim, Sulfamethoxazole Drug Combination ; administration & dosage ; therapeutic use ; Uremia ; pathology

OBJECTIVETo evaluate the effect of local application of vascular endothelial growth factor (VEGF) via adenovirus-mediated gene transfer on survival of full thickness flaps selected randomly in rats.

METHODSThirty Sprague-Dawley rats weighing 480-520 g were used in this study. A dorsal flap (8 cm x 2 cm) in full thickness with the pedicle located at the level of the iliac crest was designed. Then the rats received 1,012 pfu replication-deficient recombinant adenovirus carrying VEGF (AdCMV-VEGF group, n=10), 1,012 pfu recombinant beta-galactosidase adenovirus (AdCMV-Gal group, n=10) and 1 ml saline (saline group, n=10), respectively, in the distal two thirds of the proposed flap by means of subdermal injection at 8 different locations. Three days after treatment, the flaps were elevated as originally designed and sutured back in situ. The survival rate of the flaps was evaluated on day 7 after operation.

RESULTSThe survival rate of the flaps in the AdCMV-VEGF group increased significantly as compared with those of the AdCMV-Gal group (P<0.01) and the saline group (P<0.01). Immunohistochemical staining showed that VEGF was expressed in the survival flaps injected with AdCMV-VEGF. Histological analysis showed that more granulation tissues and angiogenesis were observed in the AdCMV-VEGF group than those in the AdCMV-Gal and the saline groups.

CONCLUSIONSLocal application of adenovirus-mediated VEGF165 cDNA may efficiently improve the survival of ischemic skin flaps.

Adenoviridae ; genetics ; Animals ; Endothelial Growth Factors ; genetics ; Genetic Therapy ; Intercellular Signaling Peptides and Proteins ; genetics ; Lymphokines ; genetics ; Male ; Neovascularization, Physiologic ; Rats ; Rats, Sprague-Dawley ; Surgical Flaps ; Transfection ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors

OBJECTIVETo investigate the effect of vascular bundle implantation in autogenous bone graft on angiogenesis.

METHODSThirty-six New Zealand white rabbits were evaluated in this study. A portion of bilateral radial bones of a rabbit were removed as free bone grafts, whose periostea were peeled off. In test group, the external maxillary artery bundle was passed through the marrow cavity of the bone. In control group, there was no vascular bundle implantation. Each bone was placed in masseter muscle separately. The rabbits were sacrificed and the specimens were procured at 3 days, 1, 2, 3, 4 and 6 weeks after surgery for histological observation, Chinese ink perfusion and CD34 immunohistochemistry. Microvessel density (MVD) was assessed in order to evaluate angiogenesis of autogenous bone grafts.

RESULTSThe bone grafts were found revascularization in 3 days after surgery in the test group, whereas at 2 weeks in the control group. In 3 days, 1 week, 2 weeks, 3 weeks and 4 weeks after surgery, the MVD of test group was significantly higher than that of control group. In 4 weeks after surgery, angiogenesis of test group reached to peak.

CONCLUSIONVascular bundle implantation improved angiogenesis in non-vascularized autogenous bone graft in this study.

Animals ; Bone Transplantation ; Bone and Bones ; Prostheses and Implants ; Rabbits

OBJECTIVEThe purpose of this study was to determine the effects of local delivery of vascular endothelial growth factor( VEGF) transferred with adenovirus-mediated gene on the survival of ischemic random skin flap in rats.

METHODSThe animals were divided into three groups randomly (n = 10) . A 2 cm x 8 cm dorsal skin flap was designed with the pedicle at the level of the iliac crest. In group A (AdCMV-VEGF), each animal received 10(12) PR replication-deficient recombinant adenovirus (AdCMV-VEGF) in the distal two-thirds of the proposed flap by means of the subdermal injection at ten different locations. In group B (AdCMV-GaI), each received 1012 PR AdCMV-Gal. In Group C (Saline), each received 1 ml saline. Three days after the treatment, the flap was elevated as planed way and re-sutured back to its donor site. All the animals were evaluated 7 days after the operation.

RESULTSThe mean percentage of surviving flap area was (85.91 +/- 2.54)% in group A, (59.56 +/- l.18)% in group B, and (61.48 +/- l.09)% in group C. There was a significant increase in the percentage of the survival area in the flaps of the group A, compared with the group B and group C (Group B vs. Group A, P < 0.01; Group C vs.Group A, P < 0.01, Group B vs. Group C, P >0.05). Hybridization in the situ, the immunohistochemical stain showed that the VEGF was expressed in the survival tissue of the flap treated with the AdCMV-VEGF, but it was not found in the control groups. Histological analysis demonstrated qualitatively greater amount of granulation tissue and angiogenesis was found in the group treated with the AdCMV-VEGF than the controls.

CONCLUSIONSThe results may indicate that Ad vector carrying VEGF cDNA could be useful in enhancing the survival of the skin flap due to the effect of the local delivery of the VEGF.

Adenoviridae ; genetics ; Animals ; DNA, Complementary ; Genetic Therapy ; Genetic Vectors ; Graft Survival ; Humans ; Male ; Rats ; Rats, Sprague-Dawley ; Recombinant Proteins ; genetics ; Surgical Flaps ; Vascular Endothelial Growth Factor A ; genetics

AIM:To investigate the effects of titanium dioxide(TiO2)nanotube arrays on the early adhesion behavior of Porphyromonas gingivalis(Pg),Tannerella forsythia(Tf)and Actinobacillus actinomycetemcomitans(Aa)be-fore and after loaded with minocycline hydrochloride(MN).METHODS: TiO2nanotube arrays were prepared by ano-dization and loaded with MN.Titanium slices were divided into 3 groups according to different treatment methods: pure polishing titanium(Ti)group,TiO2nanotube titanium(TiO2)group, and MN(120 μg)TiO2nanotube titanium(MN TiO2)group.The antibacterial properties of the titanium tablets were evaluated by the bacteriostasis test.RESULTS:The Ti had no antibacterial activity.The antibacterial activity of TiO 2to Aa,Pg and Tf was poor,with only about 20%of anti-bacterial rate after 4 h.After loaded with MN,its antibacterial activity was enhanced,and the antibacterial rate was up to 77%after 4 h.CONCLUSION: No antibacterial activity in the Ti group was observed.If TiO2nanotube arrays were formed on the surface and MN was loaded,the antibacterial activity on periodontal pathogens was stronger.