scholarly journals A Novel Role of Complement in Mobilization: Immunodeficient Mice Are Poor Granulocyte-Colony Stimulating Factor Mobilizers Because They Lack Complement-Activating Immunoglobulins

Stem Cells ◽  
2007 ◽  
Vol 25 (12) ◽  
pp. 3093-3100 ◽  
Author(s):  
Ryan Reca ◽  
Daniel Cramer ◽  
Jun Yan ◽  
Mary J. Laughlin ◽  
Anna Janowska-Wieczorek ◽  
...  
Keyword(s):  
Granulocyte Colony Stimulating Factor ◽  
Colony Stimulating Factor ◽  
Immunodeficient Mice ◽  
Stimulating Factor

P–391 Role of subcutaneous granulocyte colony-stimulating factor infusion in thin endometrium

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
K Banerjee ◽  
B Singla
Keyword(s):  
Pregnancy Rate ◽  
Clinical Pregnancy ◽  
P Value ◽  
Granulocyte Colony Stimulating Factor ◽  
Colony Stimulating Factor ◽  
Thin Endometrium ◽  
Group 2 ◽  
Stimulating Factor ◽  
Group 1

Abstract Study question To assess the role of subcutaneous granulocyte colony-stimulating factor (G-CSF) in thin endometrium cases. Summary answer G CSF has beneficial role to improve the endometrium thickness in thin endometrium. What is known already Endometrium is very important for embryo implantation and the endometrial thickness is the marker of receptivity of the endometrium. Study design, size, duration Study design - Retrospective analysis Size - 88 infertile females with thin endometrium (< 7 mm) in the age group of 23 to 40 years Duration - one year. Participants/materials, setting, methods In the group 1 of 44 females, subcutaneous infusion of G CSF (300 mcg/ml) was added along with other supplements and if lining was not more than 7 mm in 72 hours, then second infusion was given. In the group 2 of 44 females, only estradiol valerate and sildenafil were given.The efficacy of G CSF was evaluated by assessing the endometrium thickness before embryo transfer, pregnancy rates and clinical pregnancy rates. Main results and the role of chance There was no difference between the two groups regarding demographic variables, egg reserve, sperm parameters, number of embryos transferred and embryo quality. . The pregnancy rate was 60% (24 out of 40 cases) in the group 1 that was significantly higher than in-group 2 that was 31% (9 out of 29 cases) with p value < 0.0001. The clinical pregnancy rate was also significantly higher in-group 1 (55%) as compared to group 2 (24%) with p value < 0.0001. Limitations, reasons for caution Further larger cohort studies are required to explore the subcutaneous role of G CSF in thin endometrium. Wider implications of the findings: Granulocyte colony-stimulating factor has beneficial role to improve the endometrium thickness in thin endometrium. In most of previous studies, the intrauterine infusion of G CSF was given to improve the uterine lining. This is one of the few studies done that showed subcutaneous role of G CSF in thin endometrium. Trial registration number Not applicable

scholarly journals Interleukin-6 and the Granulocyte Colony-Stimulating Factor Receptor Are Major Independent Regulators of Granulopoiesis In Vivo But Are Not Required for Lineage Commitment or Terminal Differentiation

Blood ◽  
1997 ◽  
Vol 90 (7) ◽  
pp. 2583-2590 ◽  
Author(s):  
Fulu Liu ◽  
Jennifer Poursine-Laurent ◽  
Huai Yang Wu ◽  
Daniel C. Link
Keyword(s):  
Interleukin 6 ◽  
Terminal Differentiation ◽  
Granulocyte Colony Stimulating Factor ◽  
Colony Stimulating Factor ◽  
Normal Numbers ◽  
Stimulating Factor ◽  
Deficient Mice ◽  
Additional Loss

Multiple hematopoietic cytokines can stimulate granulopoiesis; however, their relative importance in vivo and mechanisms of action remain unclear. We recently reported that granulocyte colony-stimulating factor receptor (G-CSFR)-deficient mice have a severe quantitative defect in granulopoiesis despite which phenotypically normal neutrophils were still detected. These results confirmed a role for the G-CSFR as a major regulator of granulopoiesis in vivo, but also indicated that G-CSFR independent mechanisms of granulopoiesis must exist. To explore the role of interleukin-6 (IL-6) in granulopoiesis, we generated IL-6 × G-CSFR doubly deficient mice. The additional loss of IL-6 significantly worsened the neutropenia present in young adult G-CSFR–deficient mice; moreover, exogenous IL-6 stimulated granulopoiesis in vivo in the absence of G-CSFR signals. Near normal numbers of myeloid progenitors were detected in the bone marrow of IL-6 × G-CSFR–deficient mice and their ability to terminally differentiate into mature neutrophils was observed. These results indicate that IL-6 is an independent regulator of granulopoiesis in vivo and show that neither G-CSFR or IL-6 signals are required for the commitment of multipotential progenitors to the myeloid lineage or for their terminal differentiation.

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