scholarly journals Sex-specific effects of maternal immunization on yolk antibody transfer and offspring performance in zebra finches

2010 ◽  
Vol 7 (1) ◽  
pp. 50-53 ◽  
Author(s):  
Rafał Martyka ◽  
Joanna Rutkowska ◽  
Mariusz Cichoń
Keyword(s):  
Blood Cells ◽  
Taeniopygia Guttata ◽  
Egg Laying ◽  
The Body ◽  
Adaptive Mechanism ◽  
Zebra Finches ◽  
Offspring Performance ◽  
Maternal Immunization ◽  
Specific Effects ◽  
Embryo Sex

Trans-generational antibody transfer constitutes an important mechanism by which mothers may enhance offspring resistance to pathogens. Thus, differential antibody deposition may potentially allow a female to differentiate offspring performance. Here, we examined whether maternal immunization with sheep red blood cells (SRBC) prior to egg laying affects sex-specific yolk antibody transfer and sex-specific offspring performance in zebra finches ( Taeniopygia guttata ). We showed that immunized mothers deposit anti-SRBC antibodies into the eggs depending on embryo sex and laying order, and that maternal exposure to SRBC positively affects the body size of female, but not male offspring. This is the first study reporting sex-specific consequences of maternal immunization on offspring performance, and suggests that antibody transfer may constitute an adaptive mechanism of maternal favouritism.

Clock gene-independent daily regulation of haemoglobin oxidation in red blood cells

2021 ◽  
Author(s):  
Andrew D. Beale ◽  
Priya Crosby ◽  
Utham K. Valekunja ◽  
Rachel S. Edgar ◽  
Johanna E. Chesham ◽  
...  
Keyword(s):  
Circadian Rhythms ◽  
Red Blood Cells ◽  
Blood Cells ◽  
Human Subjects ◽  
Developmental Regulation ◽  
Physiological Role ◽  
Cell Types ◽  
The Body

AbstractCellular circadian rhythms confer daily temporal organisation upon behaviour and physiology that is fundamental to human health and disease. Rhythms are present in red blood cells (RBCs), the most abundant cell type in the body. Being naturally anucleate, RBC circadian rhythms share key elements of post-translational, but not transcriptional, regulation with other cell types. The physiological function and developmental regulation of RBC circadian rhythms is poorly understood, however, partly due to the small number of appropriate techniques available. Here, we extend the RBC circadian toolkit with a novel biochemical assay for haemoglobin oxidation status, termed “Bloody Blotting”. Our approach relies on a redox-sensitive covalent haem-haemoglobin linkage that forms during cell lysis. Formation of this linkage exhibits daily rhythms in vitro, which are unaffected by mutations that affect the timing of circadian rhythms in nucleated cells. In vivo, haemoglobin oxidation rhythms demonstrate daily variation in the oxygen-carrying and nitrite reductase capacity of the blood, and are seen in human subjects under controlled laboratory conditions as well as in freely-behaving humans. These results extend our molecular understanding of RBC circadian rhythms and suggest they serve an important physiological role in gas transport.

EFEKTIVITAS PEMBERIAN INFUSED WATER KURMA TERHADAP PENINGKATAN KADAR HEMOGLOBIN REMAJA PUTRI KEBIDANAN POLTEKKES MEDAN TAHUN 2020

2021 ◽  
Vol 2 (1) ◽  
pp. 64-69
Author(s):  
HIJRA HIDAYANA ◽  
Suswati Suswati
Keyword(s):  
Red Blood Cells ◽  
Adolescent Girls ◽  
Blood Cells ◽  
The Body ◽  
Rank Test ◽  
Plain Water ◽  
P Value ◽  
Signed Rank ◽  
Wilcoxon Signed Rank Test ◽  
Signed Rank Test

Hemoglobin is the red pigment-protein contained in red blood cells. The function of hemoglobin is to transport oxygen from the lungs and in the bloodstream to be carried to the tissues. Hemoglobin can increase by increasing the intake of iron in the body. One way to increase hemoglobin can be done by giving method Infused Water Dates. Infused water is a drink consisting of plain water with fresh fruit added and soaking or settling together for a certain time. The making of infused water is carried out by soaking for a period of 0 to 12 hours, so that the infused water becomes a liquid medium that carries more nutrients than ordinary water and will be more easily absorbed by cells and distributed throughout the body (Sidauruk, 2018 ). In several studies, it is stated that dates can increase hemoglobin levels in the blood. Where dates contain iron, vitamin A, vitamin C, protein to form red blood cells. With the method, Infused Water the date palm water becomes alkaline so that it can accelerate the absorption process in the body. The purpose of this study was to determine the effectiveness of dates infused water provision to increase hemoglobin levels of midwifery adolescent girls at Medan Health Polytechnic in 2020. This research was quasi-experimental study using the One Group Pretest-Posttest Without Control Design approach. The sample in this study were 20 respondents of midwifery adolescent girls from Medan Health Polytechnic, using the technique of purposive sampling. The statistical test used wa the Wilcoxon Signed Rank Test because the data was not normal. The results of the Wilcoxon Signed Rank Test obtained the value of P-Value = 0.001. So it can be concluded that the date infused water  is effective in increasing hemoglobin levels of midwifery adolescent girls at Medan Health Polytechnic in 2020.   Keywords: Dates Infused Water, Increased Hemoglobin Levels, Girls Adolescent

Zebra Finches (Taeniopygia guttata )

2018 ◽  
pp. 318-337
Author(s):  
Graham Law ◽  
Rudolf Nager ◽  
Michael Wilkinson
Keyword(s):  
Taeniopygia Guttata ◽  
Zebra Finches
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