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21.
R Jewelewicz S Khalaf RS Neuwirth RL Vande Wiele 《Canadian Metallurgical Quarterly》1976,47(6):701-705
This review comprises 36 patients who were treated for Asherman's syndrome from 1968 to 1974 at the Sloane Hospital for Women. Of the 18 patients who later conceived only 6 had uncomplicated term deliveries. Four had premature deliveries resulting in neonatal death. Three had placenta accreta and postpartum hemorrhage, necessitating a cesarean hysterectomy in 1. Two patients required cesarean section for complications due to the syndrome, 2 had spontaneous abortion, and 1 had a cervical pregnancy requiring total hysterectomy. Only 10 babies survived. The incidence and severity of complications in conceptions following treatment for Asherman's syndrome is high, and the obstetrician must be prepared to manage them. 相似文献
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23.
DR Calderone BG Loder D Denny RS Sticha SJ Wertheimer 《Canadian Metallurgical Quarterly》1996,35(3):230-236
A seroprevalence survey to recently proposed adenovirus (AV) serotypes AV 48 and AV 49, isolated primarily from AIDS patients, was conducted among the San Francisco Men's Health Study cohort. This cohort of homosexual, heterosexual, or bisexual HIV-seronegative and -seropositive men from selected San Francisco census tracts has been studied since 1984. The presence or absence of type-specific antibody in 628 serum specimens from 1989 was determined by microneutralization. Thirty of these subjects (26 positive and four negative) were studied longitudinally. Serum specimens taken at 6-month intervals from 1984 to 1993 were tested to characterize antibody response and to document the advent of these new serotypes. Eight subjects were tested against five other AV serotypes for comparison. AV 48 and AV 49 seroprevalence rates were significantly higher in HIV-seropositives, but infection was not limited to the immunocompromised. Sexual preference was not a significant determinant for AV seroprevalence in HIV-seronegatives. However, the extent and duration of the neutralizing antibody response was strikingly different between homosexuals and heterosexuals: an endemic pattern of continuous reexposure over the 9-year period was seen in 90% of 19 homosexuals, while five of six heterosexuals (83%) had an episodic pattern of exposure with antibody decline to undetectable levels. These data suggest that these viruses may be endemic in some part of the homosexual population and that sexual transmission may be the primary source of continuous reexposure. 相似文献
24.
RS Kirby 《Canadian Metallurgical Quarterly》1996,15(17-18):1859-1866
Advances in computer hardware, software and database interfaces have provided opportunities for collation, manipulation, analysis and display of spatial data on an unprecedented scale. Demands for small area data in public health, fuelled in part by an increasing emphasis on benchmarking in relation to Year 2000 objectives but also in response to state and federal programmes to involve local communities in the assessment and planning process have simultaneously generated an unprecedented demand for these analyses and data presentations. This paper discusses four areas where geographic, cartographic and statistical theory and methodology need to be brought to bear on the development of applications involving small area health data. These areas are: (i) the theoretical conceptions of space; (ii) managing the inherent variability of rates and frequencies; (iii) attribution of events or cases to areas or to points; and (iv) the application of sound principles of cartographic design to the presentation of results. 相似文献
25.
T St?hr D Schulte Wermeling T Szuran V Pliska A Domeney H Welzl I Weiner J Feldon 《Canadian Metallurgical Quarterly》1998,59(4):799-805
Glucagon-like peptide-1 (GLP-1) may be one of the enterogastrone hormones of the ileal brake mechanism. We therefore studied its effects on gastric lipase secretion in healthy volunteers and vagotomized patients during infusion of pentagastrin. The intestinal incretin hormone GLP-1 (glucagon-like peptide-1, 7-36 amide) was investigated because of its inhibitory effects on gastric acid secretion and motility. GLP-1 infused intravenously in amounts corresponding to the postprandial release significantly inhibited pentagastrin-stimulated gastric lipase secretion and lipolytic activity. The inhibitory effect of GLP-1 persisted in vagotomized patients, suggesting that fundic chief cells, from which gastric lipase is released, or neighboring inhibitory cells could be equipped with GLP-1 receptors. Vagotomized patients had significantly higher plasma concentrations of gastrin and secretin. No significant changes of gastrin, secretin, and CCK secretion were seen during GLP-1 infusion in the vagotomized patients, whereas secretin decreased significantly in the healthy volunteers. GLP-1 seems to be a naturally occurring inhibitor of gastric lipase secretion acting via a nonvagal mechanism. Our results indicate that gastric lipase secretion is subject to hormonal stimulatory as well as inhibitory mechanisms. 相似文献
26.
The effects of enhanced HSP27 expression or expression of a nonphosphorylatable form of HSP27 on the migration of bovine arterial endothelial cells was assessed. Expression of the wild-type protein enhanced migration by twofold compared to control transfectants, whereas expression of the mutant protein retarded migration by 40%. Since homologs of the small heat shock protein inhibit F-actin polymerization in vitro and may alter basolateral F-actin content in vivo, it was postulated that the 27 kDa heat shock protein affects microfilament extension essential for cell motility. Expression of the wild-type protein promoted the generation of long cellular extensions, whereas expression of the dominant negative mutant protein resulted in a marked reduction of lamellipodia and generated aberrant microfilament morphology at the wound edge. Immunofluorescence combined with phalloidin staining demonstrated the colocalization of the HSP27 gene products with lamellipodial microfilament structures. These data suggest that the 27 kDa heat shock protein regulates migration by affecting the generation lamellipodia microfilaments. 相似文献
27.
HB Goldman RS Israeli JL Lerner RS Hollabaugh MS Steiner 《Canadian Metallurgical Quarterly》1998,52(6):1073-1078
In this investigation, the presence of NKA-immunoreactive substances was determined in pineal glands from intact, castrated and castrated, testosterone-treated male rats. The effect of environmental light, melatonin treatment and superior cervical ganglionectomy on pineal NKA-immunoreactive substances was also investigated. The results obtained show that NKA is present in measurable amounts in the rat pineal, and NPK is probably also present, Orchidectomy was followed by an increase in the content of NKA-immunoreactive substances in the pineal gland. The replacement treatment with testosterone propionate in castrated rats blocked this effect. NKA-immunoreactive substances were not significantly different quantitatively in pineals from rats killed under light or under darkness. The removal of the superior cervical ganglia was followed by a significant increase in the NKA-immunoreactive substance content in the pineal gland of male rats. These results indicate that NKA and other tachykinins are present in the pineal gland of the male rat, and they seem to be regulated by gonadal hormones and the innervation originated from the superior cervical ganglia. 相似文献
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29.
We report the differences between using either EDTA plasma or serum in a turbidimetric assay for quantitation of C-reactive protein (CRP). A systematic discrepancy was found for these two sample materials. This was most pronounced in the low concentration range (below 20 mg1(-1)) at which lower values were found in serum than in EDTA plasma. Conversely, in the high concentration range, serum showed slightly higher values. Addition of K3-EDTA to the reaction buffer improved the kinetics for sera with low concentrations of CRP, thus increasing the sensitivity of the assay. We found an overall constant discrepancy of approximately 8% lower values in plasma than in serum (equally for low and high levels of CRP) after the addition of K3-EDTA. The most probable explanation for this effect seems to be the differing water content of serum and EDTA plasma. We discuss the role and function of EDTA in the CRP assay and suggest some hypothetical mechanisms. 相似文献
30.
RS Wallis P Nsubuga C Whalen RD Mugerwa A Okwera D Oette JB Jackson JL Johnson JJ Ellner 《Canadian Metallurgical Quarterly》1996,174(4):727-733
Macrophage activation and tumor necrosis factor-alpha (TNF-alpha) production are critical in tuberculosis immunity but may result in increased human immunodeficiency virus (HIV) expression and accelerated HIV disease progression in HIV-infected persons. Pentoxifylline inhibits expression of TNF-alpha and HIV. A double-blind, placebo-controlled study of adjunctive therapy with pentoxifylline (1800 mg/day) as a timed-release formulation was done in Ugandan HIV-infected patients with pulmonary tuberculosis. Subjects had early HIV disease (mean CD4 cell count, 380/microL) and did not receive other antiretroviral drugs. Pentoxifylline resulted in decreased plasma HIV RNA and serum beta 2-microglobulin and, in a subset of moderately anemic patients, improved blood hemoglobin levels. Trends were noted toward reduced TNF-alpha production in vitro and improved performance scores, but these did not reach statistical significance. No effect was noted on body mass, CD4 cell count, or survival. Additional studies of more potent TNF-alpha inhibitors in HIV-positive subjects with tuberculosis are warranted. 相似文献