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Table 7 Association of heart rate and sympathovagal balance with neuropathological changes in selected nuclei of the obex

From: Time and frequency domain analysis of heart rate variability in cattle affected by bovine spongiform encephalopathy

  Neuroanatomical area Score N cattle Heart rate [bpm]
Median
(range)
P-value LF:HF power ratio
Median
(range)
P-value
Vacuolation Parasympathetic nucleus of the vagus nerve 0 13 59
(54-86)
ns 31.5
(5.3-164.8)
0.01
score (neuropil*) ≥ 2 9 46
(32-76)
(0.08) 5.1
(0.5-37.5)
 
  Solitary tract nucleus 0-1 12 61
(54-89)
ns 33.1
(5.3-87.6)
ns
  (neuropil*) 3-4 21 64
(32-84)
(0.99) 10.2
(0.5-1831.0)
(0.15)
PrPd Parasympathetic nucleus of the vagus nerve 0 10 69
(54-81)
ns 43.0
(2.7-164.8)
ns
intensity (intraneuronal) 2 17 65
(39-109)
(0.90) 24.6
(1.1-1831.0)
(0.56)
score Parasympathetic nucleus of the vagus nerve 0-1 11 66
(58-89)
ns 27.5
(6.7-146.0)
ns
  (neuropil) 3-4 26 63
(32-109)
(0.13) 16.5
(0.5-1831.0)
(0.34)
  Solitary tract nucleus 0-1 6 66
(55-81)
ns 27.1
(2.7-164.8)
ns
  (neuropil*) 3-4 33 63
(32-109)
(0.63) 12.3
(0.5-1831.0)
(0.65)
  1. * Intraneuronal vacuolation in the PNV was too infrequent to be used for comparison; vacuolation and PrPd accumulation in the STN was exclusively in the neuropil.
  2. ns = not significant (P > 0.05).