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South Asian J Cancer. 2017 Jan-Mar; 6(1): 35.
PMCID: PMC5379892

Opisthorchiasis, hypercholesterolemia, and cholangiocarcinoma: A reappraisal

Dear Editor

Opisthorchiasis is a common fluke infestation that can be seen in many countries around the world. The chronic opisthrochiasis is proved for its relationship with cholangiocarcinogenesis.[1] A recent report showed that the important biochemical metabolite of parasite relating to carcinogenesis is sterol.[2] In fact, the disturbance of gall bladder in chronic opisthrochiasis is observed and this can result in abnormal serum biochemical parameters, especially for lipid profile.[3] In addition, the abnormal gall bladder physiology can further result in carcinogenesis.[3] Of interest, the abnormality persist despite successful antihelminthic therapy.[4] However, it has never been systematically studied on the incidence of hypercholesterolemia among the cases with cholangiocarcinoma. The authors performed a re-assessment of the data on our patients in a previous report.[5] Of 62 cases, it can be seen that 50 cases (80.6%) had concurrent hypercholesterolemia. The very high incidence can be observed. The authors proposed that hypercholesterolemia might be included as an important clinical character of chronic opisthorchiasis. In endemic area, the stool examination for screening for Opisthorchis spp. is suggested for all patients with hypercholesterolemia. In addition, since abnormal sterol metabolite plays very important role in carcinogenesis, anyone with identified Opisthorchis spp. in stool should be strictly controlled for fat dietary.

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Conflicts of interest

There are no conflicts of interest.

References

1. Brindley PJ, da Costa JM, Sripa B. Why does infection with some helminths cause cancer? Trends Cancer. 2015;1:174–182. [PMC free article] [PubMed]
2. Correia da Costa JM, Vale N, Gouveia MJ, Botelho MC, Sripa B, Santos LL, et al. Schistosome and liver fluke derived catechol-estrogens and helminth associated cancers. Front Genet. 2014;5:444. [PMC free article] [PubMed]
3. Stepanova TF, Bakshtanovskaia IV. Bile and serum biochemical parameters in chronic opisthorchiasis. Med Parazitol (Mosk) 2007;4:8–12. [PubMed]
4. Bakshtanovskaia IV, Stepanova TF, Shonin AL, Ponomareva OV, Terekhina VK, Kholodkovskaia NV. Impact of anthelminthic therapy for opisthorchiasis on the biochemical parameters of hepatic function. Med Parazitol (Mosk) 2003;2:10–5. [PubMed]
5. Wiwanitkit V. Clinical findings among 62 Thais with cholangiocarcinoma. Trop Med Int Health. 2003;8:228–30. [PubMed]

Articles from South Asian Journal of Cancer are provided here courtesy of Wolters Kluwer -- Medknow Publications