Table 1 Meta-analysis of previously reported in vivo BDNF measurements taken with and without IN delivery of BDNF.

From: Focused ultrasound enhanced intranasal delivery of brain derived neurotrophic factor produces neurorestorative effects in a Parkinson’s disease mouse model

Species

Total BDNF Delivered

In vivo BDNF Measurements

Time point

Method

Report

Mice

No BDNF

559.9 ng/g (hippocampus)

baseline

ELISA

57

Rats

No BDNF

636.1 ng/g (hippocampus)

baseline

ELISA

57

Mice

No BDNF

27.77 ng/g (striatum)

baseline

ELISA

58

29.48 ng/g (hippocampus)

baseline

ELISA

58

Rats

No BDNF

0.16 ng/g (whole brain)

baseline

ELISA

59

Rats

5 ug of rhBDNF

0.056 ng/L (hippocampus)

4 hours

Microdialysis

60

Rats

70 ug of [125I]-BDNF rhBDNF

1.7 ng/L (hippocampus)

1 hour

Gamma Counter

61

Mice

5 ug of [125I]-BDNF rhBDNF

0.05% inj/g (midbrain)

30 min

Gamma Counter

62

0.2% inj/g (striatum)

30 min

Gamm Counter

62

0.1% inj/g (whole brain)

5 min

Gamma Counter

62

Rats

40 ug of BDNF

4.33 ng/g (whole brain)

1 hour

ELISA

59

Mice

400 ug of rhBDNF

49.91 ng/mL || 29.05 ug/g || 7.2%/g (striatum)

1 hour

ELISA

This study

45.57 ng/mL || 35.07 ug/g || 8.7%/g (midbrain)

1 hour

ELISA

This study

  1. BDNF measurements reported are of total BDNF in the specified structures.