The cell web in the ameloblasts of the rat incisor

1965 ◽  
Vol 153 (1) ◽  
pp. 55-70 ◽  
Author(s):  
E. Kallenbach ◽  
Y. Clermont ◽  
C. P. Leblond
Keyword(s):  
Rat Incisor ◽  
Cell Web

scholarly journals An Investigation of the Wild Rat Crown Incisor as an Indicator of Lead (Pb) Exposure Using Inductively Couple Plasma Mass Spectrometry (ICP-MS) and Laser Ablation ICP-MS

2021 ◽  
Vol 18 (2) ◽  
pp. 767
Author(s):  
Andrew Kataba ◽  
Shouta M. M. Nakayama ◽  
Hokuto Nakata ◽  
Haruya Toyomaki ◽  
Yared B. Yohannes ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Laser Ablation ◽  
Inductively Couple Plasma ◽  
Health Concern ◽  
Sprague Dawley ◽  
Rat Incisor ◽  
Sprague Dawley Rats ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Pb Exposure

Lead (Pb) is a metal toxicant of great public health concern. The present study investigated the applicability of the rat incisor in Pb exposure screening. The levels of lead in teeth (Pb-T) in the crown and root of incisors in laboratory Pb-exposed Sprague Dawley rats were quantified using inductively coupled plasma mass spectrometry (ICP-MS). The crown accumulated much Pb-T than the root of the Sprague Dawley rat incisor. The levels of lead in blood (Pb-B) were positively correlated with the Pb-T in the crown and root incisors of the Sprague Dawley rats. As an application of the Pb-T crown results in experimental rats, we subsequently analyzed the Pb-T in the crown incisors of Pb-exposed wild rats (Rattus rattus) sampled from residential sites within varying distances from an abandoned lead–zinc mine. The Pb-T accumulation in the crown of incisors of R. rattus rats decreased with increased distance away from the Pb–Zn mine. Furthermore, the Pb-T was strongly correlated (r = 0.85) with the Pb levels in the blood. Laser ablation ICP-MS Pb-T mappings revealed a homogenous distribution of Pb in the incisor with an increased intensity of Pb-T localized in the tip of the incisor crown bearing an enamel surface in both Sprague Dawley and R. rattus rats. These findings suggest that Pb-T in the crown incisor may be reflective of the rat’s environmental habitat, thus a possible indicator of Pb exposure.

scholarly journals An Interactive Single Cell Web Portal Identifies Gene and Cell Networks in COVID-19 Host Responses

iScience ◽  
2021 ◽  
pp. 103115
Author(s):  
Kang Jin ◽  
Eric E. Bardes ◽  
Alexis Mitelpunkt ◽  
Jake Y. Wang ◽  
Surbhi Bhatnagar ◽  
...  
Keyword(s):  
Single Cell ◽  
Host Responses ◽  
Web Portal ◽  
Cell Web ◽  
Cell Networks

Pancreatic Beta-Cell Web: Its Possible Role in Insulin Secretion

Science ◽  
1972 ◽  
Vol 175 (4026) ◽  
pp. 1128-1130 ◽  
Author(s):  
L. Orci ◽  
K. H. Gabbay ◽  
W. J. Malaisse
Keyword(s):  
Insulin Secretion ◽  
Beta Cell ◽  
Pancreatic Beta Cell ◽  
Cell Web
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