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101.
The reactivity of the monoclonal antibody HMB 45 was evaluated in melanocytic tumors of the conjunctiva. Among these are 10 acquired melanoses, 19 nevi and 34 melanomas. Results were compared with the presence of the S 100 antigen. Especially the intraepithelial and junctional components of primarily benign lesions were stained with HMB 45. Within malignant melanoma this antibody reacts with melanocytes in the epithelial, junctional and subepithelial areas. The polyclonal antibody S 100 stains all melanocytes in pigmented lesions of the conjunctiva. Intraepithelial or subepithelial malignant infiltrating tumor cells show very intense staining with HMB 45. HMB 45 has therefore high specificity for stimulated melanocytes, but it does not distinguish benign and malignant proliferating melanocytic cells. 相似文献
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The present study evaluates the long-term outcome of elastic stable intramedullary nailing (ESIN) in children with long-bone shaft fractures. 70 patients were examined, the present mean age of patients was 12.7 (+/- 3.26) years, mean time interval since surgery was 3.1 (+/- 1.49) years. Following ESIN at the lower extremity (23 femur fractures, 14 tibia fractures), keloid formation was remarkable in one patient, range of motion (ROM) was adequate in all but one boy (extension deficit of the hip of 10 degrees). Overall leg length discrepancy was +4.1 mm (+/- 5.2 mm) following ESIN for femur fracture and +3.2 mm (+/- 6.4 mm) following tibia fracture. Radiologically, all fractures had healed and no signs of avascular necrosis (AVN) could be detected. Malalignment was documented in one girl following tibia fracture (valgus of 12 degrees). Assessment of the upper extremity (28 forearm fractures, 5 humerus fractures) revealed keloid formation in 5 children. Impaired ROM was found in three children following ESIN for a forearm fracture (limited pro-/supination). Radiological controls detected one case of retrocurvation of the humerus (12 degrees, polytrauma patient) and one varus deviation of the radius in a 10-year old boy. Questioning the children about their opinion of the treatment, 93% considered the cosmetic results as good (6% fair), they judged the functional ability as perfect in 91% (9% fair) and 93% expressed great overall content (6% fair, 1% poor). In conclusion, ESIN provides good long-term results and can be a beneficial method for children with long-bone fractures. 相似文献
104.
M. Knorr Peter Oliver Denk 《Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie》1999,237(1):72-77
· Background: In order to develop new strategies for the pharmacological modulation of posttraumatic and postsurgical wound
healing of the corneal stroma, the effect of Trapidil, a competitive platelet-derived growth factor (PDGF) antagonist, on
the proliferation of cultured bovine stromal fibroblasts (BSF) was investigated. · Methods: BSF, obtained from explant cultures,
were seeded at a cell density of 100/mm2. The effect of various concentrations of Trapidil on cell viability and cell proliferation was determined using three different
culture conditions: (1) serum-free medium (WM/F12), (2) serum-containing medium (WM/F12+10% FCS), and (3) serum-free medium
+50 ng/ml PDGF-BB. Trapidil was added in concentrations ranging from 100 μg/ml to 400 μg/ml. Cell numbers were determined
2 and 5 days after addition of Trapidil, using a computer-based cell-counting system. Cell viability was evaluated morphologically
and by means of a repopulation assay. · Results: Addition of Trapidil (100–400 μg/ml) led to a significant, dose-dependent
inhibition of both serum- and PDGF-BB-induced proliferation of BSF. In contrast, treatment of quiescent BSF, cultured in serum-free
medium, did not result in a significant reduction of cell number. No cytotoxic effects were observed. · Conclusion: The results
of the present study demonstrate an inhibitory effect of Trapidil on the proliferation of BSF. It can be assumed that application
of Trapidil might be a useful tool in the prevention of corneal complications after trauma (e.g., scarring, astigmatism and
– with respect to photorefractive procedures – formation of haze and regression of the refractive effect).
Received: 16 January 1998 Revised version received: 12 March 1998 Accepted: 17 March 1998 相似文献
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A new form of antenatal care, introduced in 1981, is reported. It is based on a division of labour between doctor and midwife and demands an increasing number of consultations, vaginal control of the cervix in the period of advanced danger of premature delivery and includes a short psycho-prophylactic programme. The results reached from 1981 up to 1985 are reported and the essential points of the new system of antenatal care have been discussed. 相似文献
107.
Maggie KM Ma Helen KW Law Kin Sun Tse Kwok Wah Chan Gary CW Chan Desmond YH Yap Maggie MY Mok Lorraine PY Kwan Sydney CW Tang Bo Ying Choy Tak Mao Chan 《International journal of urology》2018,25(5):450-455
Objectives
To evaluate the use of shear wave elastography in assessment of kidney allograft tubulointerstitial fibrosis.Methods
Shear wave elastography assessment was carried out by two independent operators in kidney transplant recipients who underwent allograft biopsy for clinical indications (i.e. rising creatinine >15% or proteinuria >1 g/day). Allograft biopsies were interpreted by the same pathologist according to the 2013 Banff Classification.Results
A total of 40 elastography scans were carried out (median creatinine 172.5 μmol/L [interquartile range 133.8–281.8 μmol/L]). Median tissue stiffness at the cortex (22.6 kPa [interquartile range 18.8–25.7 kPa] vs 22.3 kPa [interquartile range 19.0–26.5 kPa], P = 0.70) and medulla (15.0 kPa [interquartile range 13.7–18.0 kPa] vs 15.6 kPa [interquartile range 14.4–18.2 kPa]) showed no significant differences between the two observers. Interobserver agreement was satisfactory (intraclass correlation coefficient of the cortex 0.84, 95% CI 0.70–0.92 and intraclass correlation coefficient of the medulla 0.88, 95% CI 0.78–0.94). The areas under the receiver operating characteristic curves for detection of tubulointerstitial fibrosis were estimated to be 0.75 (95% CI 0.61–0.89), 0.85 (95% CI 0.75–0.95) and 0.65 (95% CI 0.53–0.78) for cortical, medullary tissue stiffness and serum creatinine, respectively.Conclusions
Shear wave elastography can be used as a non‐invasive tool to evaluate kidney allograft fibrosis with reasonable interobserver agreement and superior test performance to serum creatinine in detecting early tubulointerstitial fibrosis. 相似文献108.
The Lymphocyte Function–associated Antigen 1 I Domain Is a Transient Binding Module for Intercellular Adhesion Molecule (ICAM)-1 and ICAM-3 in Hydrodynamic Flow 下载免费PDF全文
The I domain of lymphocyte function–associated antigen (LFA)-1 contains an intercellular adhesion molecule (ICAM)-1 and ICAM-3 binding site, but the relationship of this site to regulated adhesion is unknown. To study the adhesive properties of the LFA-1 I domain, we stably expressed a GPI-anchored form of this I domain (I-GPI) on the surface of baby hamster kidney cells. I-GPI cells bound soluble ICAM-1 (sICAM-1) with a low avidity and affinity. Flow cell experiments demonstrated a specific rolling interaction of I-GPI cells on bilayers containing purified full length ICAM-1 or ICAM-3. The LFA-1 activating antibody MEM-83, or its Fab fragment, decreased the rolling velocity of I-GPI cells on ICAM-1–containing membranes. In contrast, the interaction of I-GPI cells with ICAM-3 was blocked by MEM-83. Rolling of I-GPI cells was dependent on the presence of Mg2+. Mn2+ only partially substituted for Mg2+, giving rise to a small fraction of rolling cells and increased rolling velocity. This suggests that the I domain acts as a transient, Mg2+-dependent binding module that cooperates with another Mn2+-stimulated site in LFA-1 to give rise to the stable interaction of intact LFA-1 with ICAM-1. 相似文献
109.
110.