Erythrocyte Volume Distribution during Recovery from Bone Marrow Arrest

Nature ◽  
1967 ◽  
Vol 213 (5077) ◽  
pp. 708-709 ◽  
Author(s):  
M. A. VAN DIL LA ◽  
J. F. SPALDING
Keyword(s):  
Bone Marrow ◽  
Volume Distribution ◽  
Erythrocyte Volume

Erythrocyte Volume Distribution Analysis and Hematologic Changes in Two Horses with Immune-mediated Hemolytic Anemia

1983 ◽  
Vol 20 (4) ◽  
pp. 424-433 ◽  
Author(s):  
G. Weiser ◽  
C. Kohn ◽  
A. Vachon
Keyword(s):  
Bone Marrow ◽  
Hemolytic Anemia ◽  
Packed Cell Volume ◽  
Volume Distribution ◽  
Distribution Analysis ◽  
Erythrocyte Volume ◽  
Erythroid Hyperplasia ◽  
Immune Mediated ◽  
Positive Direct ◽  
Erythrocyte Fragility

Immune-mediated hemolytic anemia was diagnosed in two horses on the basis of regenerative anemia, increased erythrocyte fragility in hypotonic saline, auloagglutination, and a positive direct antiglobulin (Coomb's) test. During steroid therapy partial resolution of the anemia was indicated by rising packed cell volume, macrocytosis, and bone marrow erythroid hyperplasia. Using erythrocyte volume distribution histograms (erythrograms), the regenerative response was characterized by analysis of macrocytic and normocytic erythrocyte subpopulations. In both horses, a gradual net increase of about 2 × 106 macrocytes/μl occurred over a four- to five-week period. Over the same interval there was a gradual decrease in the number of normocytes. We suggest that the macrocytes remained large through this period rather than contributing to normocyte population growth. Erythrograms may provide an additional means of evaluating erythrocyte regeneration in horses.

scholarly journals Improved hematopoiesis in anemic Sl/Sld mice by splenectomy and therapeutic transplantation of a hematopoietic microenvironment

Blood ◽  
1989 ◽  
Vol 74 (3) ◽  
pp. 1144-1151
Author(s):  
P Anklesaria ◽  
TJ FitzGerald ◽  
K Kase ◽  
A Ohara ◽  
JS Greenberger
Keyword(s):  
Bone Marrow ◽  
Cell Line ◽  
Hind Limb ◽  
Stromal Cell ◽  
Bone Marrow Stromal Cell ◽  
Volume Distribution ◽  
Distribution Analysis ◽  
Marrow Stromal Cell ◽  
Stromal Cell Line ◽  
The Right

The ability of a clonal hematopoiesis-supportive bone-marrow stromal cell line GBlneor to engraft and alter the microenvironment-induced anemia of Sl/Sld mice was studied. Prior to stromal cell transplantation, Sl/Sld mice received 1 Gy total body irradiation (TBI) and 13 Gy to the right hind limb. Two months after intravenous (IV) injection of 5 x 10(5) GBlneor cells, 54.4% +/- 17.0% donor origin (G418r) colony-forming cells were recovered from the right hind limb of Sl/Sld mice. Long-term bone marrow cultures (LTBMCs) established from GBlneor-transplanted mice produced 189.5 CFU-GEMM-forming progenitors/flask over 10 weeks compared with 52.7 +/- 6.2 CFU-GEMM forming progenitors/flask from irradiated nontransplanted Sl/Sld mice. A partial correction of macrocytic anemia was detected 2 months after GBlneor transplantation in splenectomized, irradiated Sl/Sld mice (HgB 7.2 +/- 0.4 g/dL; MCV 68.3 +/- 7.0 fL) compared to splenectomized, irradiated, nontransplanted Sl/Sld mice (HgB 5.5 +/- 1.1 g/dL; MCV 76 +/- 8.5 fL) or control Sl/Sld mice (HgB 5.4 +/- 0.5 g/dL; MCV 82.4 +/- 1.3 fL). Mean RBC volume distribution analysis showed a 2.5-fold increase in percentage of peripheral blood RBCs with MCV less than or equal to 45 fL and confirmed reduction of the MCV in splenectomized- GBlneor-transplanted mice compared to control Sl/Sld mice. A hematopoiesis-suppressive clonal stromal cell line derived from LTBMCs of Sl/Sld mice (Sldneor) engrafted as effectively (43.5% +/- 1.2% G418r CFU-F/limb) as did GBlneor cells (38.3% +/- 0.16% G418r CFU-F/limb) to the irradiated right hind limbs of C57Bl/6 mice. LTBMCs established after 2 or 6 months from Sldneor-transplanted mice showed decreased hematopoiesis (182 +/- 12 [2 months] and 3494.3 +/- 408.1 [6 months] CFU-GEMM forming progenitors/flask over 10 weeks) compared to those established from GBlneor-transplanted mice (5980 +/- 530 [2 months] and 7728 +/- 607, [6 months] CFU-GEMM progenitors forming/flask). Thus, transplantation of clonal bone-marrow stromal cell lines in vivo can stably transfer their physiologic properties to normal or mutant mice.

scholarly journals Assessment of bone marrow Oedema-like lesions using MRI in patellofemoral knee osteoarthritis: Comparison of different MRI pulse sequences

2021 ◽  
pp. 20201367
Author(s):  
Henry Noorveriandi ◽  
Matthew J Parkes ◽  
Michael J Callaghan ◽  
David T Felson ◽  
Terence W O'Neill ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Knee Pain ◽  
Intraclass Correlation ◽  
Pulse Sequences ◽  
Correlation Coefficients ◽  
Bone Marrow Oedema ◽  
Volume Distribution ◽  
Data Set ◽  
Knee Oa ◽  
Contrast Enhanced

Objective: To compare bone marrow oedema-like lesion (BML) volume in subjects with symptomatic patellofemoral (PF) knee OA using four different MRI sequences and to determine reliability of BML volume assessment using these sequences and their correlation with pain. Methods: Seventy-six males and females (mean age 55.8 years) with symptomatic patellofemoral knee OA had 1.5 T MRI scans. PD fat suppressed (FS), STIR, contrast-enhanced (CE) T1-w FS, and 3D T1-w FFE sequences were obtained. All sequences were assessed by one reader, including repeat assessment of 15 knees using manual segmentation and the measurements were compared. We used random-effects panel linear regression to look for differences in the log-transformed BML volume (due to positive skew in the BML volume distribution) between sequences and to determine associations between BML volumes and knee pain. Results: Fifty-eight subjects had PF BMLs present on at least one sequence. Median BML volume measured using T1-w FFE sequence was significantly smaller (224.7 mm3, interquartile range [IQR] 82.50–607.95) than the other three sequences. BML volume was greatest on the CE sequence (1129.8 mm3, IQR 467.28–3166.02). Compared to CE sequence, BML volumes were slightly lower when assessed using PDFS (proportional difference = 0.79; 95% confidence interval [CI] 0.62, 1.01) and STIR sequences (proportional difference = 0.85; 95% CI 0.67, 1.08). There were strong correlations between BML volume on PDFS, STIR, and CE T1-w FS sequences (ρs = 0.98). Correlations were lower between these three sequences and T1-w FFE (ρs = 0.80–0.81). Intraclass correlation coefficients were excellent for PDFS, STIR, and CE T1-w FS sequences (0.991 to 0.995), while the ICC for T1-w FFE was good at 0.88. We found no significant association between BML volumes assessed using any of the sequences and knee pain. Conclusion: T1-w FFE sequences were less reliable and measured considerably smaller BML volume compared to other sequences. BML volume was larger when assessed using the contrast enhanced T1-w FS although not statistically significantly different from BMLs when assessed using PDFS and STIR sequences. Advances in knowledge: This is the first study to assess BMLs by four different MRI pulse sequences on the same data set, including different fluid sensitive sequences and gradient echo type sequence.

Erythrocyte Volume Distribution Analysis and Hematologic Changes in Dogs with Iron Deficiency Anemia

1983 ◽  
Vol 20 (2) ◽  
pp. 230-241 ◽  
Author(s):  
G. Weiser ◽  
M. O'Grady
Keyword(s):  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Binding Capacity ◽  
Transferrin Saturation ◽  
Blood Film ◽  
Deficiency Anemia ◽  
Mean Corpuscular Hemoglobin ◽  
Volume Distribution ◽  
Distribution Analysis ◽  
Erythrocyte Volume

Hematologic features were characterized in 12 dogs with iron deficiency anemia attributable to chronic external blood loss. Consistent abnormalities in hemograms included moderate to marked reticulocytosis, decreased mean corpuscular volume, and decreased mean corpuscular hemoglobin concentration. Hypoproteinemia occurred in only four of 12 dogs. Consistent blood film findings included hypochromic cells, leptocytosis, and erythrocyte fragmentation. These dogs had significantly decreased serum iron values (p < 0.001) and percent transferrin saturation values (p < 0.001) compared with 33 clinically healthy adult dogs. The total iron binding capacity values of these dogs were not significantly different (p > 0.5) than those of the healthy dogs. Using erythrocyte volume distribution curves, the percentages of microcytic cells (≤ 45 fl) were determined to range from 20% to 82%. Sequential changes in erythrocyte subpopulations were evaluated in four dogs which received iron therapy. The hematologic response consisted of fairly rapid restoration of packed cell volume by production of normocytes followed by a more gradual replacement of residual microcytes by new normocytes.

scholarly journals Persistent macrocytosis assessed by erythrocyte subpopulation analysis following erythrocyte regeneration in cats

Blood ◽  
1982 ◽  
Vol 60 (2) ◽  
pp. 295-303
Author(s):  
MG Weiser ◽  
GJ Kociba
Keyword(s):  
Survival Time ◽  
Cell Size ◽  
Hemolytic Anemia ◽  
Size Range ◽  
Survival Curve ◽  
Volume Distribution ◽  
Gradual Reduction ◽  
Erythrocyte Volume ◽  
Heinz Body ◽  
The Mean

Serial erythrocyte volume distribution curves were used to characterize changes in erythrocyte subpopulations following the induction of Heinz body hemolytic anemia in cats. Macrocytes produced in response to hemolysis were observed after loss of reticulum. After recovery from hemolysis, a gradual reduction in mean cell size resulted from a combination of macrocyte remodeling and production of normocytic cells. The mean apparent prehemolysis half-survival time for chromium-51- labeled erythrocytes was 13.7 days. There were two components to the posthemolysis survival curve. An initial accelerated loss of label was due to either destruction of posthemolysis macrocytes or loss of cell contents associated with remodeling. The second survival curve component reflected an increased mean apparent half-survival time of 20.2 days. After correction for isotope elution, the latter component reflected cohort-like labeling of relatively young erythrocytes having normal survival for the duration of the experiment. At the beginning for this latter component, 42% of the erythrocytes were macrocytic (mean of 3.3 x 10(6) macrocytes/microliter). Since the number of macrocytes gradually declined during the period of normal survival, it was concluded that these cells entered the normocytic size range. Recognition of persistent macrocytosis is important in the concept of the regenerative response and should be considered in the interpretation of erythrocyte volume distribution curves.

scholarly journals Sequential Changes in Erythrocyte Volume Distribution and Microcytosis Associated with Iron Deficiency in Kittens

1983 ◽  
Vol 20 (1) ◽  
pp. 1-12 ◽  
Author(s):  
M. G. Weiser ◽  
G. J. Kociba
Keyword(s):  
Iron Deficiency ◽  
Mean Corpuscular Volume ◽  
Serum Iron ◽  
Transferrin Saturation ◽  
Lower Percentage ◽  
Volume Distribution ◽  
Corpuscular Volume ◽  
Erythrocyte Volume ◽  
The Mean ◽  
Adult Cats

Hemograms, erythrocyte volume distribution curves, serum iron and percent transferrin saturation determinations were done on samples from 50 kittens to characterize feline erythrocytic responses between one and ten weeks of age. At one week of age, all kittens had marked macrocytosis and anisocytosis. Most of the macrocytic cells no longer were present by five weeks. Macrocytes were replaced by erythrocytes of normal volume in 30% of the kittens. At five weeks of age, 70%of the kittens had produced microcytic cells which correlated with significantly lower packed cell volume values (p < 0.02) and mean corpuscular volume values (p < 0.001). By seven weeks of age, kittens with microcytosis were producing normocytic erythrocytes. Between two and four weeks of age, kittens with microcytosis had significantly lower serum iron and percent transferrin saturation values (p < 0.01) compared to kittens without microcytosis. Between five and seven weeks of age, all kittens had very high iron values which were significantly greater than those of healthy adult cats (p < 0.01). Six kittens with low iron values received an iron dextran injection at two to three weeks of age. At five weeks, these kittens had significantly greater mean corpuscular volumes, packed cell volumes (p < 0.01) and lower percentage of microcytic cells (p < 0.001) than littermate controls. These data demonstrate that transient microcytosis and anemia observed in kittens is attributable to iron deficiency. It also was demonstrated that erythrocyte volume distribution curves were more sensitive than the mean corpuscular volume in detecting microcytosis in kittens.

scholarly journals Persistent macrocytosis assessed by erythrocyte subpopulation analysis following erythrocyte regeneration in cats

Blood ◽  
1982 ◽  
Vol 60 (2) ◽  
pp. 295-303 ◽  
Author(s):  
MG Weiser ◽  
GJ Kociba
Keyword(s):  
Survival Time ◽  
Cell Size ◽  
Hemolytic Anemia ◽  
Size Range ◽  
Survival Curve ◽  
Volume Distribution ◽  
Gradual Reduction ◽  
Erythrocyte Volume ◽  
Heinz Body ◽  
The Mean

Abstract Serial erythrocyte volume distribution curves were used to characterize changes in erythrocyte subpopulations following the induction of Heinz body hemolytic anemia in cats. Macrocytes produced in response to hemolysis were observed after loss of reticulum. After recovery from hemolysis, a gradual reduction in mean cell size resulted from a combination of macrocyte remodeling and production of normocytic cells. The mean apparent prehemolysis half-survival time for chromium-51- labeled erythrocytes was 13.7 days. There were two components to the posthemolysis survival curve. An initial accelerated loss of label was due to either destruction of posthemolysis macrocytes or loss of cell contents associated with remodeling. The second survival curve component reflected an increased mean apparent half-survival time of 20.2 days. After correction for isotope elution, the latter component reflected cohort-like labeling of relatively young erythrocytes having normal survival for the duration of the experiment. At the beginning for this latter component, 42% of the erythrocytes were macrocytic (mean of 3.3 x 10(6) macrocytes/microliter). Since the number of macrocytes gradually declined during the period of normal survival, it was concluded that these cells entered the normocytic size range. Recognition of persistent macrocytosis is important in the concept of the regenerative response and should be considered in the interpretation of erythrocyte volume distribution curves.

Erythrocyte volume distribution with two extremes

1995 ◽  
Vol 15 (6) ◽  
pp. 889-895
Author(s):  
Akio Yoshikoshi ◽  
Akio Sakanishi
Keyword(s):  
Volume Distribution ◽  
Erythrocyte Volume

scholarly journals Improved hematopoiesis in anemic Sl/Sld mice by splenectomy and therapeutic transplantation of a hematopoietic microenvironment

Blood ◽  
1989 ◽  
Vol 74 (3) ◽  
pp. 1144-1151 ◽  
Author(s):  
P Anklesaria ◽  
TJ FitzGerald ◽  
K Kase ◽  
A Ohara ◽  
JS Greenberger
Keyword(s):  
Bone Marrow ◽  
Cell Line ◽  
Hind Limb ◽  
Stromal Cell ◽  
Bone Marrow Stromal Cell ◽  
Volume Distribution ◽  
Distribution Analysis ◽  
Marrow Stromal Cell ◽  
Stromal Cell Line ◽  
The Right

Abstract The ability of a clonal hematopoiesis-supportive bone-marrow stromal cell line GBlneor to engraft and alter the microenvironment-induced anemia of Sl/Sld mice was studied. Prior to stromal cell transplantation, Sl/Sld mice received 1 Gy total body irradiation (TBI) and 13 Gy to the right hind limb. Two months after intravenous (IV) injection of 5 x 10(5) GBlneor cells, 54.4% +/- 17.0% donor origin (G418r) colony-forming cells were recovered from the right hind limb of Sl/Sld mice. Long-term bone marrow cultures (LTBMCs) established from GBlneor-transplanted mice produced 189.5 CFU-GEMM-forming progenitors/flask over 10 weeks compared with 52.7 +/- 6.2 CFU-GEMM forming progenitors/flask from irradiated nontransplanted Sl/Sld mice. A partial correction of macrocytic anemia was detected 2 months after GBlneor transplantation in splenectomized, irradiated Sl/Sld mice (HgB 7.2 +/- 0.4 g/dL; MCV 68.3 +/- 7.0 fL) compared to splenectomized, irradiated, nontransplanted Sl/Sld mice (HgB 5.5 +/- 1.1 g/dL; MCV 76 +/- 8.5 fL) or control Sl/Sld mice (HgB 5.4 +/- 0.5 g/dL; MCV 82.4 +/- 1.3 fL). Mean RBC volume distribution analysis showed a 2.5-fold increase in percentage of peripheral blood RBCs with MCV less than or equal to 45 fL and confirmed reduction of the MCV in splenectomized- GBlneor-transplanted mice compared to control Sl/Sld mice. A hematopoiesis-suppressive clonal stromal cell line derived from LTBMCs of Sl/Sld mice (Sldneor) engrafted as effectively (43.5% +/- 1.2% G418r CFU-F/limb) as did GBlneor cells (38.3% +/- 0.16% G418r CFU-F/limb) to the irradiated right hind limbs of C57Bl/6 mice. LTBMCs established after 2 or 6 months from Sldneor-transplanted mice showed decreased hematopoiesis (182 +/- 12 [2 months] and 3494.3 +/- 408.1 [6 months] CFU-GEMM forming progenitors/flask over 10 weeks) compared to those established from GBlneor-transplanted mice (5980 +/- 530 [2 months] and 7728 +/- 607, [6 months] CFU-GEMM progenitors forming/flask). Thus, transplantation of clonal bone-marrow stromal cell lines in vivo can stably transfer their physiologic properties to normal or mutant mice.

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