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排序方式: 共有297条查询结果,搜索用时 62 毫秒
1.
Benign intracranial hypertension and recombinant growth hormone therapy in Australia and New Zealand
PA Crock JD McKenzie AM Nicoll NJ Howard W Cutfield LK Shield G Byrne 《Acta paediatrica (Oslo, Norway : 1992)》1998,87(4):381-386
Benign intracranial hypertension (BIH) is reported in three children from Australia and one from New Zealand, who were being treated with recombinant human growth hormone (rhGH). Three males and one female, aged between 10.5 and 14.2 y, developed intracranial hypertension within 2 weeks to 3 months of starting treatment. A national database, OZGROW, has been prospectively collecting data on all 3332 children treated with rhGH in Australia and New Zealand from January 1986 to 1996. The incidence of BIH in children treated with growth hormone (GH) is small, 1.2 per 1000 cases overall, but appears to be greater with biochemical GHD (<10IUml -1 ), i.e. 6.5/1000 (3 in 465 cases), relative risk 18.4, 95% confidence interval 1.9-176.1, than in all other children on the database. The incidence in patients with Turner's syndrome was 2.3/1000 (1 in 428 cases). No cases in patients with partial GHD (10–20 IUml -1 ) or chronic renal failure were identified. Possible causative mechanisms are discussed. The authors'practice is now to start GH replacement at less than the usual recommended dose of 14IUm-2 week-1 in those children considered to be at high risk of developing BIH. Ophthalmological evaluation is recommended for children before and during the first few months following commencement of rhGH therapy and is mandatory in the event of peripheral or facial oedema, persistent headaches, vomiting or visual symptoms. The absence of papilledema does not exclude the diagnosis. 相似文献
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The purpose of this study is to identify correlates of dental student stress. Associations between characteristics of dental students and their stress levels are examined, along with the association of stress with drug use and health problems. A total of 300 out of 315 dental students completed a questionnaire that measured the frequency and stressfulness of 31 stressors; drug use; health problems; and student characteristics including Type A behavior, career commitment, demographics, and lifestyle variables. Characteristics that were associated with a higher stress level were a higher level of Type A behavior and lower level of career commitment. Greater stress was also associated with a greater frequency of health problems. The results suggest an interactional stress model in which the personalities and attitudes of students are important mediators of the stress response. 相似文献
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Polymorphisms in the Chlamydia trachomatis cytotoxin locus associated with ocular and genital isolates 下载免费PDF全文
Carlson JH Hughes S Hogan D Cieplak G Sturdevant DE McClarty G Caldwell HD Belland RJ 《Infection and immunity》2004,72(12):7063-7072
Chlamydia trachomatis is a strict human pathogen producing infections that cause medically important chronic inflammatory diseases, such as blinding trachoma and tubal factor infertility. Isolates exist as serotypes that fall into distinct biologic and pathological groups corresponding to differences in infection tissue tropism and invasion properties. Paradoxically, genome sequencing of several diverse strains has revealed a remarkable level of genomic synteny, suggesting that minor genetic differences determine the pathogen host- and tissue-specific infection characteristics. To better understand the genetic basis of chlamydial pathobiologic diversity, we performed comparative DNA-DNA microarray genomic hybridizations with all 15 C. trachomatis serovariants. We found there are few major genetic differences among the 15 serovars. An exception was the cytotoxin locus located in the plasticity zone, a region that exhibited significant polymorphisms among serovars. We therefore sequenced this region from all 15 serovars. The cytotoxin gene was interrupted by extensive mutations and deletions among the different serovars; however, three basic open reading frame motifs were discovered that correlated with noninvasive oculotropic, urogenitotropic, and invasive serovars. Of interest, only noninvasive genitotropic serovars possessed an intact N-terminal portion of the putative toxin gene. This region contains the UDP-glucose binding domain and the glycosyltransferase domain required for enzymatic activity of the clostridial toxin homologs, suggesting a role in urogenital infection or pathogenesis. 相似文献
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The effectiveness of antacid and placebo in relieving single episodes of spontaneous duodenal ulcer pain were compared in two double blind, controlled, randomized trials. The trials compared the effects on ulcer pain of individual doses of a liquid antacid and placebo, rather than the effects of therapeutic regimens with antacid or placebo. Thirty patients were studied. There were no significant differences between antacid and placebo in time to onset, degree, or duration of pain relief. These results suggest that factors other than gastric acid neutralization are important in acute relief of spontaneous duodenal ulcer pain. 相似文献
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Jonathan A. Levant MD Thomas L. Kun MD John Jachna MD Richard A. L. Sturdevant MD Jon I. Isenberg MD 《Digestive diseases and sciences》1974,19(3):207-209
In 6 male subjects without gastrointestinal disease, graded intravenous doses of the C-terminal octapeptide of cholecystokinin (OP-CCK) produced graded decreases in small intestinal transit time. Mean transit time decreased from a control value of 130 minutes after 0.15 M NaCl to 81, 65, and 19 minutes after 5, 10, and 20 ng/kg of OP-CCK. Side effects (nausea and abdominal discomfort) were minimal and transient, lasting less than 3 minutes. Small intestinal radiographic appearance remained unchanged after OP-CCK. 相似文献