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81.

Objective

Aortic surgeries requiring hypothermic circulatory arrest evoke systemic inflammatory responses that often manifest as vasoplegia and hypotension. Because mast cells can rapidly release vasoactive and proinflammatory effectors, we investigated their role in intraoperative hypotension.

Methods

We studied 31 patients undergoing proximal aortic repair with hypothermic circulatory arrest between June 2013 and April 2015 at Duke University Medical Center. Plasma samples were obtained at different intraoperative time points to quantify chymase, interleukin-6, interleukin-8, tumor necrosis factor alpha, and white blood cell CD11b expression. Hypotension was defined as the area (minutes × millimeters mercury) below a mean arterial pressure of 55 mm Hg. Biomarker responses and their association with intraoperative hypotension were analyzed by 2-sample t test and Wilcoxon rank sum test. Multivariable logistic regression analysis was used to examine the association between clinical variables and elevated chymase levels.

Results

Mast cell-specific chymase increased from a median 0.97 pg/mg (interquartile range [IQR], 0.01-1.84 pg/mg) plasma protein at baseline to 5.74 pg/mg (IQR, 2.91-9.48 pg/mg) plasma protein after instituting cardiopulmonary bypass, 6.16 pg/mg (IQR, 3.60-9.41 pg/mg) plasma protein after completing circulatory arrest, and 7.64 pg/mg (IQR, 4.63-12.71 pg/mg) plasma protein after weaning from cardiopulmonary bypass (each P value < .0001 vs baseline). Chymase was the only biomarker associated with hypotension during (P = .0255) and after (P = .0221) cardiopulmonary bypass. Increased temperatures at circulatory arrest and low presurgical hemoglobin levels were independent predictors of increased chymase responses.

Conclusions

Mast cell activation occurs in cardiac surgery requiring cardiopulmonary bypass and hypothermic circulatory arrest and is associated with intraoperative hypotension.  相似文献   
82.
Bende J  Ursu M  Csiszar M 《Obesity surgery》2004,14(2):236-238
Background: Laparoscopic adjustable gastric banding (LAGB) was started in Hungary in 1998. We used Lap-Band and SAGB devices. In this study we present our experience through the learning curve. Methods: From Jan 1999 to Dec 2002, 54 patients underwent laparoscopic surgery for morbid obesity in our department, using the Lap-Band? and SAGB. There were 33 men and 21 women, with median age 42 (range 20-64), and preoperative BMI 50 kg/m2 (range 41-66). All underwent LAGB, except one patient who had laparoscopic vertical banded gastroplasty.The procedures used the 4-trocar technique. Results: The first patient required reoperation because of gastric rupture from drinking sparkling mineral water despite of our advice. Excluding this, we had no intraoperative or short-term postoperative complications. Mean operating time was 82 minutes (range 55-192), and hospital stay was 3 days. Followup ranges from 1 to 36 months. Mean weight loss was 47 kg at 12 months and 67 kg at 36 months. Mean BMI fell to 29 kg/m2. Conclusion:With its safety and effectiveness, LAGB has been a good choice for handling morbidly obese patients in our early experience.  相似文献   
83.
IntroductionLimited information is available regarding patients’ indication for seeking labiaplasty of the labia minora.AimThe aim of this article is to investigate a patient's indications for seeking labiaplasty of the labia minora.MethodsThis is a retrospective review of the medical records of all patients undergoing labiaplasty at our clinic over a 27-month period.Main Outcome MeasuresIndications for surgery were assessed using standardized questionnaires during the patients’ initial history and physical. Patients were divided into three groups as based on the questionnaire, including: Group I—patients seeking the procedure strictly for aesthetic reasons; Group II—patients seeking the procedure strictly for functional impairment (i.e., pain and discomfort); and Group III—patients who feel they are having the surgery for both aesthetic and functional reasons. Patients undergoing the surgery for aesthetic reasons were also asked whether this was strictly a personal decision or was influenced by either another man or woman whether a friend, spouse, or partner.ResultsThe review revealed 131 patients had undergone a labia reduction surgery: Group I—those who received labia reduction surgery for strictly aesthetic reasons equaled 37% (49/131); Group II—those seeking the surgery strictly for functional impairment equaled 32% (42/131); and Group III—those seeking the surgery for both functional and aesthetic reasons equaled 31% (40/131).ConclusionThe majority of patients undergoing reduction of the labia minora do so for functional reasons with minimal outside influences affecting their decision for treatment. Miklos JR, and Moore RD. Labiaplasty of the labia minora: Patients's indications for pursuing surgery.  相似文献   
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Comparisons were made of estimates of the Wechsler Adult Intelligence Scale – Revised Full Scale IQ using the two-,three- and four-subtest linear equating procedures of Kaufman (1990) and Booker and Cyr (1986) with FSIQ estimates using prorating to obtain FSIQ scores. The advantage of prorating is that it affords greater clinical flexibility in selection of subtests. The participants were 64 neuropsychiatric patients who completed the full WAIS-R from which short form and FSIQ were calculated. Prorating yielded estimates of mean IQ and categorization of IQ comparable to IQs obtained by linear equating, though there was an increased likelihood of disparate results with extreme IQ scores. Prudent clinical judgment is recommended for situations involving unusual or extreme scaled score patterns, particularly when the number of subtests is small.  相似文献   
86.
    
Relatively nonmyelotoxic drugs and drug combinations were investigated for their ability to eliminate malignant cells from human bone marrow. In vitro 90% inhibitory concentration (IC90) doses were established on granulocyte macrophage colony-forming units (GM-CFU) in culture of bone marrow by using the GM-CFU assay for the following drugs: 4- hydroperoxycyclophosphamide (4-HC), Adriamycin, L-asparaginase, bleomycin, hydrocortisone, VP-16, spirogermanium, Taxol, and vincristine. The leukemic cell kill efficiency of these drugs at IC90 doses was compared with that of 4-HC on acute lymphoid leukemia (ALL) cell lines by using the limiting-dilution assay. Under these conditions, no single drug was superior to 4-HC. To increase the in vitro effect in leukemic cell kill, combinations of vincristine with hydrocortisone, Adriamycin, VP-16, and 4-HC were investigated. Vincristine at 1 to 5 micrograms/mL increased the marrow cytotoxicity of hydrocortisone, Adriamycin, and VP-16, but it was protective (subadditive) with 4-HC. Vincristine and 4-HC in combination was additive to supraadditive on ALL cell lines, increased the leukemic cell kill by one to two logs above 4-HC alone at IC90 doses (P less than .05), and was not affected by the addition of excess marrow cells. The recommended doses for chemopurging in clinical studies are vincristine, 1 to 5 micrograms/mL, plus 4-HC, 5 micrograms/mL.  相似文献   
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  总被引:2,自引:0,他引:2  
Lister  J; Miklos  JA; Swerdlow  SH; Bahler  DW 《Blood》1996,88(4):1407-1410
A human immunodeficiency virus-negative male was successfully treated for two occurrences of Burkitt's lymphoma, 15 years apart. As consolidation of his second remission, he underwent high-dose chemotherapy with peripheral blood stem cell transplantation. In an effort to prove whether the second lymphoma was a relapse of the first or a second primary lymphoma, we obtained paraffin-embedded material from both lymphomas. DNA was extracted from this material and amplified by polymerase chain reaction (PCR) using consensus JH and VH region primers. Analysis of the PCR products, which mostly reflects VDJ joints, showed two sharp bands of different molecular size, proving the monoclonal nature of the lymphomas and suggesting that each had different Ig gene rearrangements. Sequencing of both PCR products showed a marked dissimilarity in nucleotide sequence in the clonally unique VDJ joint region, providing strong evidence for the separate cellular genesis of each lymphoma. These results suggest that late relapses of Burkitt's lymphoma should be examined for clonal distinctiveness. If the second lymphoma is distinct from the primary one, it might be treated as a primary lymphoma rather than as recurrent disease.  相似文献   
90.
In previous studies on rat brain we found that the observed heterogeneity of the regional distribution of amino acids was much greater when small well-defined anatomical structures were assayed. We therefore reinvestigated the distribution of glutamate and aspartate in 50 discrete areas from adult and old human brain. The concentration of glutamate in the area of highest level was 4.5 and 4.7 times as high as in the area of lowest level in adult and old brain respectively; for aspartate these values were 3.0 and 6.6. Several changes in old brain were noted. The human pattern differed from that in rat.  相似文献   
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