Table 1 Summary of current research neural remodeling in PDAC and CCA.

From: Nerve fibers in the tumor microenvironment in neurotropic cancer—pancreatic cancer and cholangiocarcinoma

References

Samples

Neural marker

Key results

Cancer types

Iwasaki et al. [73]

256

GAP-43

Neural hypertrophy and nerve numbers are decreased;

Pancreatic carcinoma

Fisher et al. [105]

58

 

Presence of PNI was associated with a reduction of OS

Cholangiocarcinoma

Chatterjee et al. [17]

212

 

Presence of PNI was directly correlated with tumor size, margin status, lymph node metastasis, pathologic tumor and AJCC stages, and shorter DFS and OS

Pancreatic

carcinoma

Lenz et al. [106]

177

 

80.3% of PDAC detected PNI; Neural remodeling progress can be a reason of pancreatic neuropathy;

Pancreatic

carcinoma

Shimada et al. [99]

153

 

Degree of PNI was directly related to lymph node metastases, surgical margin and tumor sides size, and inversely associated with DFS

Pancreatic

carcinoma

Ceyhan et al. [107]

97

GAP-43

NGF

PGP9.5

Artemin

There were enlarged nerves and dense neural networks in pancreatic carcinoma slides;

Neurotrophic characteristics GAP-43, NGF and Artemin are increased in pancreatic carcinoma and have close relevancy with intrapancreatic neuropathy.

Pancreatic

carcinoma

Ceyhan et al. [103]

149

GAP-43

PGP9.5

NGF

Neural hypertrophy, neural density increased;

Neuropathic alteration was not correlated with survival in pancreatic carcinoma, these changes include neural thickness, hypertrophy, density. Only the severity of pain significantly affects survival.

Pancreatic

carcinoma

Ceyhan et al. [103]

564

GAP-43

Neural density is increased and nerves are enlarged in pancreatic carcinoma, the severity of PNI was linked to neuropathic changes and pain.

Pancreatic

carcinoma

Shirai et al. [104]

59

 

80% of CCA samples detected PNI;

5 years survival rates of patients with or without PNI were 17% and 70%, respectively.

Cholangiocarcinoma