α1酸性糖蛋白对中性多形核粒细胞吞噬和杀菌功能的影响

目的:探讨急性期反应质α1酸性糖蛋白(AGP)对中性多形核粒细胞(PMNs)吞噬和杀菌功能的影响.方法:大鼠静脉注射AGP,以大鼠游移型和非游移型PMNs在吞噬过程中的化学发光为检测指标,并将经AGP调理后的PMNs与酵母聚糖混和进行体外实验检测.结果:AGP组PMNs的化学发光值大大强于对照组,AGP对PMNs氧化发光的增强作用随剂量的增加而增加,但用AGP调理的酵母聚糖组,其PMNs化学发光值明显低于用正常大鼠血清调理的酵母聚糖组.结论:应用AGP可以明显增加游移型和非游移型PMN的吞噬和杀菌活性,其机制是直接作用于PMNs而非对被吞噬物的调理.     

Takayasu arteritis: radiographic and angiographic findings in 59 patients

Fifty-nine patients (57 females, two males) with Takayasu arteritis were retrospectively evaluated. Chest radiographs were abnormal in 68% of patients in whom they were obtained (n = 49). Aortic contour changes and calcification were frequent findings. Sixty-eight percent of patients who underwent total aortography (n = 50) had panaortitis, and 28% had involvement confined to the thoracic aorta and/or its branches. Stenosis was the most common angiographic finding in the aorta and its branches, but occlusion (n = 4), aneurysm (n = 3), and dilatation (n = 15) were not infrequent. Adventitial vascular structures (the vasa vasorum) were seen in three cases. Eighty-six percent (n = 21) of pulmonary arteriograms showed abnormalities. Occlusion was by far the most common finding. There was no predilection for any lobe nor correlation with systemic arteritis. It was concluded that Takayasu arteritis characteristically involves the systemic and the pulmonary arteries independently. Total aortography and pulmonary arteriography are necessary to diagnose and evaluate the extent of the disease.     

Surgical management of the redundant transposed colon

Redundancy of the transposed thoracic colon is not uncommon. Rarely, however, when accompanied by severe symptoms, it may necessitate surgical correction. We describe herein a surgical technique that allows the stretching and straightening of the redundant transposed organ.     

Mechanism of arsenic-induced inhibition of erythropoiesis in mice

Anemia accompanies arsenic intoxication in man. The present studies were undertaken to clarify further the effects of arsenic on erythropoiesis. A dose-related inhibition of red cell ⁵⁹Fe incorporation and reticulocyte response was observed in normal mice treated with a single injection of arsenic. Arsenite was approximately two times as inhibitory as arsenate. The effects of arsenic on erythropoietin-induced erythroid differentiation revealed a significant inhibitory effect on young, proliferating marrow nucleated erythroid precursor cells. More mature, nonproliferating nucleated erythroid cells were resistant to the toxic action of arsenic. A dose-related inhibitory effect of arsenic on DNA synthesis was observed in fetal liver nucleated erythroid cells incubated with ³H thymidine. Ineffective erythropoiesis as well as the megaloblastic morphology accompanying aberrant DNA synthesis – manifestations of arsenic toxicity in man – were not evident in the present studies.     

The microflora of chronic pleural empyema. An analysis of 89 patients

Bacteriological cultures from 89 patients with chronic pleural empyema were studied. Seventy-nine patients had positive and 10 negative culture results. Forty-eight patients had a single isolate--pyogenic cocci in 32 and Gram-negative enteric bacilli in 16--and multiple organisms were grown in 31 patients. Anaerobic organisms were recovered in 6,2%. Our negative culture rate of 11,2% may reflect failure to recover anaerobes, but could represent sterilization of the empyema by prior use of antibiotics. The results of antibiotic sensitivity tests and the pathogenicity of the organisms recovered suggest that the choice of antibiotic combinations for chronic pleural empyema requires careful consideration.