scholarly journals Diffuse reflectance spectroscopy detects increased hemoglobin concentration and decreased oxygenation during colon carcinogenesis from normal to malignant tumors

2009 ◽  
Vol 17 (4) ◽  
pp. 2805 ◽  
Author(s):  
Hsing-Wen Wang ◽  
Jeng-Kai Jiang ◽  
Chi-Hung Lin ◽  
Jen-Kou Lin ◽  
Guang-Jie Huang ◽  
...  
Keyword(s):  
Diffuse Reflectance ◽  
Diffuse Reflectance Spectroscopy ◽  
Malignant Tumors ◽  
Colon Carcinogenesis ◽  
Hemoglobin Concentration ◽  
Reflectance Spectroscopy

scholarly journals Diffuse Reflectance Spectroscopy reveals heat stress-induced changes in hemoglobin profile in chicken breast

2019 ◽  
Author(s):  
Sina Dadgar ◽  
Liz Greene ◽  
Ahmed Dhamad ◽  
Barbara Mallmann ◽  
Sami Dridi ◽  
...  
Keyword(s):  
Heat Stress ◽  
Diffuse Reflectance ◽  
Diffuse Reflectance Spectroscopy ◽  
Hemoglobin Concentration ◽  
Reflectance Spectroscopy ◽  
Optical Data ◽  
Chicken Breast ◽  
Poultry Industry ◽  
Short Period ◽  
Induced Changes

AbstractGlobal rise in incidence of woody breast (WB) syndrome imposes a significant economic burden on the poultry industry. The increase in WB is due to the large increase in the weight of chickens these days within a very short period. An early determination of WB can significantly reduce losses to the poultry industry. Diffuse reflectance spectroscopy provides a noninvasive and rapid method to interrogate tissue function. The sensitivity of DRS to the distinct absorption spectra of oxygenated and deoxygenated hemoglobin allows accurate quantification of average hemoglobin concentration and vascular oxygenation within the sampled tissue. In this study, we used diffuse reflectance spectroscopy to monitor breast hemoglobin concentration (THb) and vascular oxygen saturation (sO2) of 16 chickens that were exposed to heat stress (HS). HS is an important cause of WB myopathy in chickens. Animals were exposed to heat-stress (HS) and optical data were acquired at three time points: at baseline prior to heat stress, 2 days, and 21 days after initiation of HS. Our results show that animals from control and HS groups had a steady decay in optically derived breast hemoglobin concentration consistent with independent i-STAT measurements made on blood sampled from the femoral artery and could provide a noninvasive technology for monitoring tissue function in the poultry industry.

scholarly journals Diffuse reflectance spectroscopy reveals heat stress-induced changes in hemoglobin concentration in chicken breast

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sina Dadgar ◽  
Elizabeth Greene ◽  
Ahmed Dhamad ◽  
Barbara Mallmann ◽  
Sami Dridi ◽  
...  
Keyword(s):  
Heat Stress ◽  
Diffuse Reflectance ◽  
Diffuse Reflectance Spectroscopy ◽  
Hematological Parameters ◽  
Hemoglobin Concentration ◽  
Well Being ◽  
Blood Chemistry ◽  
Reflectance Spectroscopy ◽  
Chicken Breast ◽  
And Performance

AbstractHeat stress (HS) is devastating to the poultry industry due to its adverse effects on animal well-being and performance. The effects of heat stress are typically measured using a portable i-STAT blood analyzer that quantifies circulatory hemoglobin concentration and other blood chemistry parameters. Here, we used diffuse reflectance spectroscopy (DRS) as a novel non-invasive method to directly determine changes in hematological parameters in the breast tissues of live heat-stressed broilers. Three-week-old male broilers were randomly subjected to two environmental conditions (thermoneutral, TN, 24 °C vs. cyclic heat stress, HS, 35 °C, 12 h/day). Optical spectra were acquired using DRS to monitor breast hemoglobin (Hb) concentration and vascular oxygen saturation (sO2) at three time points: at baseline prior to heat stress, 2 days, and 21 days after initiation of HS. While i-STAT did not demonstrate a discernible change due to HS in circulatory hemoglobin, DRS found a significant decrease in breast Hb and sO2 after exposure to chronic HS. The decrease in sO2 was found to be due to a decrease in oxygenated hemoglobin concentration, indicating a large increase in oxygen consumption in heat-stressed broilers. Our results demonstrate that DRS could potentially be used to study the effects of HS directly in specific organs of interest, such as the breast and thigh, to improve meat quality.

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