scholarly journals Comparative yield of Salmonella typhi from blood and bone marrow cultures in patients with fever of unknown origin.

1991 ◽  
Vol 44 (3) ◽  
pp. 258-259 ◽  
Author(s):  
B J Farooqui ◽  
M Khurshid ◽  
M K Ashfaq ◽  
M A Khan
Keyword(s):  
Bone Marrow ◽  
Fever Of Unknown Origin ◽  
Unknown Origin ◽  
Salmonella Typhi ◽  
Bone Marrow Cultures ◽  
Marrow Cultures

scholarly journals The Diagnostic Usefulness of Bone Marrow Cultures in Patients with Fever of Unknown Origin

1998 ◽  
Vol 110 (2) ◽  
pp. 150-153 ◽  
Author(s):  
Emily E. Volk ◽  
Michael L. Miller ◽  
Barbara A. Kirkley ◽  
John A. Washington
Keyword(s):  
Bone Marrow ◽  
Fever Of Unknown Origin ◽  
Unknown Origin ◽  
Bone Marrow Cultures ◽  
Diagnostic Usefulness ◽  
Marrow Cultures

scholarly journals CLINICOPATHOLOGICAL PROFILE OF SALMONELLA TYPHI AND PARATYPHI INFECTIONS PRESENTING AS FEVER OF UNKNOWN ORIGIN IN A TROPICAL COUNTRY.

2015 ◽  
Vol 7 ◽  
pp. e2015021
Author(s):  
Nayyar Iqbal ◽  
Aneesh Basheer ◽  
Sudhagar Mookkappan ◽  
Anita Ramdas ◽  
Renu G'Boy Varghese ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Enteric Fever ◽  
Fever Of Unknown Origin ◽  
Clinical Laboratory ◽  
Febrile Illness ◽  
Unknown Origin ◽  
Salmonella Typhi ◽  
Common Symptom ◽  
Tropical Country ◽  
The Tropics

Background: Enteric fever, a common infection in the tropics and endemic to India, often manifests as an acute febrile illness. However, presentation as fever of unknown origin (FUO) is not uncommon in tropical countries. Methods: We aim to describe the clinical, laboratory and pathological features of cases hospitalized with fever of unknown origin and diagnosed as enteric fever. All culture proven cases of enteric fever were analyzed retrospectively over a period of three years from January 2011 to December 2013.Results: Seven of 88(8%) cases with enteric fever presented as FUO. Abdominal pain was the most common symptom besides fever. Relative bradycardia and splenomegaly were uncommon. Thrombocytopenia was the most common haematological abnormality, while leucopenia was rare. Transaminase elevation was almost universal. S.Typhi and S.Paratyphi were isolated from six cases and one case respectively.  Yield of organisms from blood culture was superior to that of bone marrow aspirate. Multiple granulomas were identified in 4 out of 6 (67%) of the bone marrows studied, including that due to S. Paratyphi and histiocytic hemophagocytosis was noted in two cases.Conclusion: FUO is a relatively common manifestation of enteric fever in the tropics. Clinical and laboratory features may be atypical in such cases, including absence of relative bradycardia, leucopenia and presence of thrombocytopenia, bicytopenia or pancytopenia.  Moreover, in endemic countries, enteric fever should be considered as a differential diagnosis, next to tuberculosis, in the evaluation of bone marrow granulomas in cases with FUO and culture correlation should be mandatory.

Formation of Multinucleated Cells that Respond to Osteotropic Hormones in Long Term Human Bone Marrow Cultures*

Endocrinology ◽  
1987 ◽  
Vol 120 (6) ◽  
pp. 2326-2333 ◽  
Author(s):  
B. R. MACDONALD ◽  
N. TAKAHASHI ◽  
L. M. MCMANUS ◽  
J. HOLAHAN, ◽  
G. R. MUNDY ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Human Bone ◽  
Human Bone Marrow ◽  
Multinucleated Cells ◽  
Bone Marrow Cultures ◽  
Human Bone Marrow Cultures ◽  
Marrow Cultures

Thrombopoietin-Induced Stimulation of Megakaryocyte- Enriched Bone Marrow Cultures

1979 ◽  
Author(s):  
K. L. Kellar ◽  
B. L. Evatt ◽  
C. R. McGrath ◽  
R. B. Ramsey
Keyword(s):  
Bone Marrow ◽  
Dna Synthesis ◽  
Bone Marrow Cells ◽  
Rabbit Plasma ◽  
Bone Marrow Cultures ◽  
Plasma Fractions ◽  
Marrow Cultures ◽  
Stimulation Of

Liquid cultures of bone marrow cells enriched for megakaryocytes were assayed for incorporation of 3H-thymidine (3H-TdR) into acid-precipitable cell digests to determine the effect of thrombopoietin on DNA synthesis. As previously described, thrombopoietin was prepared by ammonium sulfate fractionation of pooled plasma obtained from thrombocytopenic rabbits. A control fraction was prepared from normal rabbit plasma. The thrombopoietic activity of these fractions was determined in vivo with normal rabbits as assay animals and the rate of incorporation of 75Se-selenomethionine into newly formed platelets as an index of thrombopoietic activity of the infused material. Guinea pig megakaryocytes were purified using bovine serum albumin gradients. Bone marrow cultures containing 1.5-3.0x104 cells and 31%-71% megakaryocytes were incubated 18 h in modified Dulbecco’s MEM containing 10% of the concentrated plasma fractions from either thrombocytopenic or normal rabbits. In other control cultures, 0.9% NaCl was substituted for the plasma fractions. 3H-TdR incorporation was measured after cells were incubated for 3 h with 1 μCi/ml. The protein fraction containing thrombopoietin-stimulating activity caused a 25%-31% increase in 3H-TdR incorporation over that in cultures which were incubated with the similar fraction from normal plasma and a 29% increase over the activity in control cultures to which 0.9% NaCl had been added. These data suggest that thrombopoietin stimulates DNA synthesis in megakaryocytes and that this tecnique may be useful in assaying thrombopoietin in vitro.

scholarly journals Establishment of an adherent cell layer from human umbilical cord blood

2000 ◽  
Vol 23 (3) ◽  
pp. 519-522 ◽  
Author(s):  
Zeni Z.C. Alfonso ◽  
Eduardo D. Forneck ◽  
Waldir F. Allebrandt ◽  
Nance B. Nardi
Keyword(s):  
Bone Marrow ◽  
Cord Blood ◽  
Umbilical Cord Blood ◽  
Mononuclear Cells ◽  
Adherent Cell ◽  
Human Umbilical Cord Blood ◽  
Human Umbilical Cord ◽  
Adherent Cells ◽  
Bone Marrow Cultures ◽  
Marrow Cultures

In addition to bone marrow and peripheral blood, stem cells also occur in human umbilical cord blood (HUCB), and there is an increasing interest in the use of this material as an alternative source for bone marrow transplantation and gene therapy. In vitro hematopoiesis has been maintained for up to 16 weeks in HUCB cultures, but the establishment of an adherent, stromal layer has consistently failed. Adherent cell precursors among mononuclear cells from HUCB were sought for in long-term cultures. Mononuclear cells obtained from cord blood after full term, normal deliveries were cultivated at different concentrations in Iscove's modified Dulbecco's medium (IMDM) with weekly feeding. An adherent layer was detected in 16 of 30 cultures, 12 of which were plated at cell concentrations higher than 2 x 10(6) cells/ml. In contrast to bone marrow cultures, in which the stroma is detected early, in most (10/16) positive cultures from HUCB the adherent layer was identified only after the fourth week of culture. The cells never reached confluence and detached from the plate approximately four weeks after detection. May-Grünwald-Giemsa staining of positive cultures revealed fibroblast- or endothelial-like adherent cells in an arrangement different from that of bone marrow stroma in 13 samples. In two of these, the adherent cells were organized into characteristic, delimited cords of cells. Unlike bone marrow cultures, fat cells were never observed in the adherent layers. A rapid development of large myeloid cells in the first week of culture was characteristic of negative cultures and these cells were maintained for up to 12 weeks. HUCB contains adherent cell precursors which occur in lower numbers than in bone marrow and may be at a different (possibly less mature) stage of differentiation.

scholarly journals Early pre-B-cell transformation induced by the v-fms oncogene in long-term mouse bone marrow cultures.

1989 ◽  
Vol 9 (9) ◽  
pp. 3973-3981 ◽  
Author(s):  
G V Borzillo ◽  
C J Sherr
Keyword(s):  
Bone Marrow ◽  
B Cells ◽  
Chain Gene ◽  
Mouse Bone Marrow ◽  
Feeder Layers ◽  
Bone Marrow Cultures ◽  
B Lymphoid ◽  
Marrow Cultures

Murine long-term bone marrow cultures that support B-lymphoid-cell development were infected with a helper-free retrovirus containing the v-fms oncogene. Infection of B-lymphoid cultures resulted in the rapid clonal outgrowth of early pre-B cells, which grew to high cell densities on stromal cell feeder layers, expressed v-fms-coded glycoproteins, and underwent immunoglobulin heavy-chain gene rearrangements. Late-passage cultures gave rise to factor-independent variants that proliferated in the absence of feeder layers, developed resistance to hydrocortisone, and became tumorigenic in syngeneic mice. The v-fms oncogene therefore recapitulates known effects of the v-abl and bcr-abl oncogenes on B-lineage cells. The ability of v-fms to induce transformation of early pre-B cells in vitro underscores the capacity of oncogenic mutants of the colony-stimulating factor-1 receptor to function outside the mononuclear phagocyte lineage.

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