TABLE 4.
Numbers and Proportions of Orx+ Cells Contacted by BDA+ Varicosities Positive for Vesicular Transporter Proteins (VTP+), and Numbers and Proportions of BDA+ [VTP+] Varicosities in Contact with Orx+ Cells in the Lateral Hypothalamus (LH)1
| Triple-immunostained BDA/VTP/Orx series | VAChT | VGluT2 | VGAT |
|---|---|---|---|
| N° Orx+ cells contacted by BDA+ var. (Orx+:BDA+) in each series | 548.3 ± 68.3 | 532.7 ± 109.7 | 595.3 ± 109.7 |
| N° Orx+ cells contacted by BDA+ [VTP+] var. (Orx+:BDA+ [VTP+])2 | 15.7 ± 15.7 | 188.0 ± 81.4 | 376.0 ± 27.1 |
| % Orx+ cells contacted by BDA+ [VTP+] var.2 | 3.7 ± 3.7 % | 31.4 ± 9.4 % | 66.7 ± 11.2 % |
| N° BDA+ var. in contact with Orx+ cells (BDA+: Orx+) in each series | 908.6 ± 122.4 | 1096.7 ± 180.7 | 1457.0 ± 204.9 |
| N° BDA+ [VTP+] var. in contact with an Orx+ cells (BDA+ [VTP+]:Orx+)2 | 15.7 ± 15.7 | 203.7 ± 95.3 | 814.7 ± 87.2 |
| % BDA+ [VTP+] var. in contact with Orx+ cells2 | 2.2 ± 2.2 % | 16.6 ± 6.2 % | 57.8 ± 8.7 % |
Data are presented as means ± SEM. var., varicosity.
Estimated numbers of cells were obtained by random systematic sampling of the LH area at levels A6.6, A6.2 and A5.8 using StereoInvestigator from three individual cases (injection sites).
According to a non-parametric Kruskal-Wallis test, the different VTP+ varicosities differed significantly according to the numbers (H = 6.587, P = 0.037) and proportions (H = 7.261, P = 0.027) of Orx+ neurons contacted by BDA+ [VTP+] and to the numbers (H = 6.587, P = 0.037) and proportions (H = 6.938, P = 0.031) of BDA+ [VTP+] varicosities contacting Orx+ neurons.