河南本地黄牛及其与夏洛莱肉牛杂交F_1牛红细胞指数的差异性

测定了河南本地黄牛及其与夏洛莱肉牛杂交Ｆ１牛的红细胞及其指数，并进行了品种间与性别间差异性比较。结果表明：ＲＢＣ、ＰＣＶ、Ｈｂ、ＭＣＶ、ＭＣＨ和ＭＣＨＣ６项指标在本地黄牛与其杂交Ｆ１牛之间比较差异不显著（Ｐ＞０．０５），而杂交Ｆ１公牛与阉公牛、母牛间ＲＢＣ和ＭＣＶ比较差异极显著（Ｐ＜０．０１），其中ＲＢＣＦ１公牛高于阉公牛和母牛，ＭＣＶ阉公牛和母牛高于公牛；当地黄牛性别间上述６项指标比较无显著性差异（Ｐ＞０．０５）。     

Evaluation of three methods for measurement of hemoglobin and calculated hemoglobin parameters with the ADVIA 2120 and ADVIA 120 in dogs, cats, and horses

BACKGROUND: Besides flow cytometric detection of cellular hemoglobin (HGB) concentration, the ADVIA 2120 uses a novel cyanide-free colorimetric method to determine extracellular total HGB concentration. In human samples, the results are equivalent to those of the cyanmethemoglobin method on the ADVIA 120. Cyanide-free HGB measurement has not been evaluated in animal samples. OBJECTIVES: The aim of this prospective study was to compare the 3 methods of HGB analysis on the ADVIA 2120 and ADVIA 120 in blood samples from dogs, cats, and horses. METHODS: Consecutive fresh K(3)EDTA blood samples from 119 dogs, 113 cats, and 151 horses submitted to the Central Laboratory, Department of Veterinary Clinical Sciences, Justus-Liebig University Giessen, were included. A CBC was performed on each sample using the ADVIA 2120 and ADVIA 120. Colorimetric and cellular HGB concentrations and all calculated variables based on HGB measurement were compared using linear regression, Passing Bablok regression, and Bland Altman plots, using the ADVIA 120 as the reference method. RESULTS: In samples from all species, an excellent correlation was found for colorimetric HGB results (r=0.99). HGB measured with the cyanide-free method was overestimated on the ADVIA 2120 compared with the cyanide-based method on the ADVIA 120, with a mean proportional bias of -21.0% (dog), -22.0% (cat), and -19.4% (horse). The correlation of cellular HGB concentration between analyzers was excellent (r=0.99); however, imprecision was higher than for colorimetric methods. Excellent to fair agreement was found for all calculated variables. CONCLUSION: The cyanide-free method of HGB determination is appropriate for use in blood samples from animals, provided the proportional bias is considered.     

IgM paraprotein interference with hemoglobin measurement using the CELL-DYN 3500

A 10-year-old male Labrador Retriever was presented for a 6-week history of polyuria, polydipsia, rear limb weakness, and ocular discharge. The dog had marked hyperproteinemia with an IgM monoclonal gammopathy, as determined by serum protein electrophoresis and immunoelectrophoresis. Cytologic findings in a lymph node aspirate were suggestive for lymphoma, which was confirmed and identified as B cell lineage by immunophenotyping and PCR antigen receptor rearrangement. In the CBC results, marked discrepancy was observed in the hemoglobin (HGB) concentration and MCHC obtained on a CELL-DYN 3500 analyzer (HGB 13.3 g/dL, MCHC 61.4 g/dL) as compared with an IDEXX LaserCyte analyzer (HGB 7.0 g/dL, MCHC 39.2 g/dL). To investigate this discrepancy, plasma was removed from an EDTA-anticoagulated blood sample from the patient, replaced with an equal volume of CELL-DYN diluent, and analyzed on the CELL-DYN. The resulting HGB (6.72 g/dL) and MCHC (33.5 g/dL) results were similar to those obtained initially on the LaserCyte. We concluded that precipitation of IgM paraprotein by the CELL-DYN lyzing reagent, which contains quaternary ammonium salts, falsely increased the spectrophotometric measurement of HGB on the CELL-DYN. The high MCHC was attributed to the false increase in HGB concentration. No interference with HGB measurement occurred with the LaserCyte, which uses a hypotonic solution to lyse RBCs before HGB determination. Paraprotein interference should be considered in veterinary patients with monoclonal gammopathy and unexpectedly high HGB and MCHC values.     

双峰驼红细胞的形态与特性研究

用光镜、电镜与血常规检查法研究了我国２８峰双峰鸵红细胞的形态特征和生物特性。这些动物的红细胞呈椭圆形，很薄，其边缘看来光滑，但在胞浆膜上有些小突起。经测定，红细胞平均体积（ＭＣＶ）较小（２３．９７±３．９５ｆｌ），但红细胞血红蛋白平均浓度（ＭＣＨＣ）比牛和马的高（３６．７５±５．１７ｇ％＞２７．６７±０．９６ｇ％或２８．４７±３．６５ｇ％，Ｐ＜０．０１）。同时双峰驼红细胞对渗透性溶解的抵抗力很强。作者发现，双峰驼红细胞在低渗透溶解前约可膨胀到原体积的１６０％。因此，红细胞在双峰驼体内的水－电解质代谢上有重要意义。     

人工养殖不同年龄史氏鲟的血液学参数

测定了5个年龄组人工养殖史氏鲟的血液学参数，其中红细胞（RBC）、红细胞比积（HCT）、血红蛋白（HGB）、平均红细胞血红蛋白含量（MCH）、平均红细胞血红蛋白浓度（MCHC）、白细胞（WBC）等随年龄的增长而上升，WBC、HCT5年龄组与1～4龄各年龄组间有显著和极显著差异（P〈0．05）；HGB、MCH、MCHC相邻组间无显著性差异；平均血红细胞体积（MCV）、血栓细胞（PLT）、血红蛋白含量分布宽度（HDW）等1～4龄变化不大，仅在5龄MCV、PLT有较显著的上升，而HDW有显著的下降；红细胞体积分布宽度（RDW）则保持相对稳定，各年龄组间无显著差异；平均血栓细胞体积（MPV）变化不显著，随年龄增长呈下降趋势。在白细胞分类计数DLC值变化中，白细胞中各类细胞比例依次为淋巴细胞（Lym）〉嗜碱性粒细胞（Baso）〉嗜中性粒细胞（Neut）〉单核细胞（Mon），随着年龄的增长，Lym的含量逐渐下降，而Baso、Neut和Mon均呈上升趋势。