The mandibulo-stylohyoid ligament

The mandibulo-stylohyoid ligament was studied in both sides of five cadavers, the surgical importance of the structure is confirmed and the anatomical importance as a landmark is emphasized.     

Dynamics of the cationic and secretory responses to A-4166 in perifused pancreatic islets

Summary— The dynamics of the cationic and secretory response to A-4166, a hypoglycemic meglitinide analogue, was investigated in rat islets prelabelled with either ⁸⁶Rb or ⁴⁵Ca and placed in a perifusion system. In the absence of D-glucose, A-4166 (10 μM) provoked an immediate, sustained and rapidly reversible inhibition of ⁸⁶Rb outflow, this contrasting with a short-lived stimulation of insulin release. In the presence of 6 mM D-glucose, A-4166 provoked a rapid, sustained and rapidly reversible stimulation of both insulin release and ⁴⁵Ca efflux. The latter cationic response was suppressed in the absence of extracellular Ca²⁺, in which case A-4166 even caused a modest decrease in effluent radioactivity.
These findings support the view that A-4166 acts mainly in the islet B-cell by closing ATP-responsive K⁺ channels, leading to subsequent depolarization of the plasma membrane and gating of voltage-sensitive Ca²⁺ channels. Independently of the latter effect, A-4166 may also affect the intracellular distribution of Ca²⁺ ions. The present data further indicate that A-4166 belongs to those hypoglycemic agents that cause rapidly reversible changes in cationic and secretory events, at variance with highly potent sulfonylureas such as glibenclamide or glimepiride.     

热诱导培养角朊细胞表达HSP70

0　引言　热休克蛋白 (HSP)是一类当细胞受到各种有害因素刺激时合成增多的蛋白质 ,在细胞内蛋白的加工过程中具有重要作用 .我们对体外培养的角朊细胞进行热处理 ,然后观察细胞中 HSP70的表达情况 ,并对其意义进行初步探讨 .1　材料和方法1 .1　材料　角朊细胞无血清培养基 (KC- SFM) (GibcoBRL) ,鼠抗人 HSP70单克隆抗体 (Santa Cruz公司 ) ,生物素化羊抗鼠 Ig G及 SABC试剂盒 (武汉博士德生物工程有限公司 ) ,HSP70寡核苷酸探针 (上海生命技术公司合成 ) .1 .2　方法　取手术包皮 (本校西京医院门诊手术室提供 ) ,用2 .5 g·…     

Infant growth and aorta total lipid fatty acids

Abnormal fetal and infant growth have increasingly been correlated with adult onset cardiovascular disease. To date, there is little known about the lipid fatty acid profiles in infant cardiovascular tissue. Therefore, we analysed total lipid fatty acids from thoracic and abdominal aorta intima and media from 24 normally grown sudden infant death syndrome cases. Aorta from small for gestational age (n = 2), failure to thrive from birth (n = 3), and premature (n = 1) infants were also examined. Dihomo-gamma-linolenic acid (C20:3n-6) and oleic acid (C18:1n-9) concentrations were significantly lower in the thoracic than in the abdominal aorta. Similar dietary related differences were found in the subgroup (n = 15) of infants fed on formula milks. Both abdominal and thoracic intimal arachidonic (C20:4n-6) to dihomo-gamma-linolenic acid ratios were greater in the infants with retarded growth after birth than in their normally grown counterparts. Growth restriction in infancy might disrupt the normal accretion of vascular endothelial polyunsaturated fatty acids.     

A phase I trial of recombinant human interleukin-11 (neumega rhIL-11 growth factor) in women with breast cancer receiving chemotherapy

We performed a phase I trial of recombinant human interleukin-11 (rhIL- 11) in women with breast cancer. Cohorts of three to five women were accrued to five dosage levels of rhIL-11 (10, 25, 50, 75, and 100 micrograms/kg/d). rhIL-11 alone was administered by a daily subcutaneous injection for 14 days during a 28-day prechemotherapy "cycle 0." Patients (pts) subsequently received up to four 28-day cycles of cyclophosphamide (1,500 mg/m2) and doxorubicin (60 mg/m2) chemotherapy followed by rhIL-11 at their assigned dose (days 3 through 14). Sixteen pts (13 stage IV, 3 stage IIIB) were accrued to this study. Median age was 53 years and median Eastern Cooperative Oncology Group Performance Status was 0. A grade 3 neurologic event was seen in 1 pt at 100 micrograms/kg. Because of the degree of grade 2 constitutional symptoms (myalgias/arthralgias and fatigue) at 75 micrograms/kg, dose escalation was stopped and 75 micrograms/kg was the maximally tolerated dose. No other grade 3 or 4 adverse events related to rhIL-11 were seen. The administration of rhIL-11 was not associated with fever. Reversible grade 2 fatigue and myalgias/arthralgias were seen in all pts at 75 micrograms/kg. Weight gain of 3% to 5% associated with edema was seen at doses > 10 micrograms/kg but a capillary leak syndrome was not seen. rhIL-11 alone was associated with a mean 76%, 93%, 108%, and 185% increase in platelet counts at doses of 10, 25, 50, and 75 micrograms/kg, respectively. No significant changes in leukocytes were seen. A mean 19% decrease in hematocrit was observed. Acute-phase proteins increased with treatment at all doses. Compared with patients at the 10 micrograms/kg dose, patients receiving doses > or = 25 micrograms/kg experienced less thrombocytopenia in the first two cycles of chemotherapy. We conclude that rhIL-11 has thrombopoietic activity at all doses studied, is well tolerated at doses of 10, 25, and 50 micrograms/kg, and at doses > or = 25 micrograms/kg has the potential to reduce chemotherapy-induced thrombocytopenia in this model.     

肝靶向米托蒽醌白蛋白微球的研究

用乳化—热固化法制备了米托蒽醌白蛋白微球,并对其形态、大小及其分布、微粉学性质、载药性能、体外释药、稳定性和体内分布进行了研究。结果表明,该载药微球的平均算术径为0.99μm,平均表面径为1.24μm,平均容积径为1.44μm;表观载药量为2.558%±0.101%;有效载药量为1.503%±0.127%;包封率为92.82%±4.60%;体外释药符合双相动力学规律,释药方程为1-Q=0.6428e^-0.2132t+0.3988e^-000150t(γ₁=-0.9951,γ₂=-0.9982);T_1/2α=3.250h,T_1/2β=461.7h;室温放置3个月,微球形态、药物含量等均无明显变化。HPLC测定表明,小鼠尾iv该微球20min内即有77.6%±1.38%的药物浓集于肝脏,具有明显的肝靶向性。提示米托蒽醌白蛋白微球有可能提高米托蒽醌的抗肝癌效果和降低其全身毒副作用。     

大肠同时癌8例报告

近２０～３０年来,大肠癌的发病率呈上升的趋势,大肠同时癌也受到了更大的关注和重视。我院自１９８４～１９９７年共收治大肠癌１１４１例,其中大肠同时癌８例,现报告如下。１临床资料１．１一般资料：男６例,女２例;年龄２９～７２岁,中位年龄５３岁。１．２诊断...