Cited by 109Seaweed-derived Bioactive CompoundsCancer and biochemical researchMedicinal Plant Research

Regression of experimental hamster cancer by beta carotene and algae extracts

Schwartz, Joel, Shklar, Gerald·1987·Journal of Oral and Maxillofacial Surgery

Abstract

The effect of algae extract on tumor regression was studied. Phycotene (extract of Spirulina and Dunaliella algae) 250 micrograms in 0.1 ml MEM (minimum essential medium) was injected locally into DMBA (7, 12 dimethylbenz(a)anthracene)-induced squamous cell carcinomas of hamster buccal pouch in 20 animals. DMBA-induced carcinomas in 20 hamsters were injected locally with beta carotene 250 micrograms in 0.1 ml MEM; DMBA-induced carcinomas in 20 animals were injected locally with canthaxanthin, 250 micrograms in 0.1 ml MEM, and DMBA-induced carcinomas in 20 animals were injected locally with 13-cis-retinoic acid, 250 micrograms in 0.1 ml MEM. Twenty animals with DMBA-induced carcinomas were sham-injected controls using 0.1 ml MEM. The various agents were injected into the tumor bearing right buccal pouches twice-weekly for four weeks. Total tumor regression was found in 30% of phycotene animals, 20% of beta carotene animals and 15% of canthaxanthin animals after four weeks. Partial tumor regression was found in the remaining 70% of phycotene animals, 80% of beta carotene animals and 85% of canthaxanthin animals. None of the 13-cis-retinoic acid animals had total tumor regression, but 70% showed partial regression. No tumor regression was found in the DMBA control group and the sham-injected group.

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Crossref · 10.1016/s0278-2391(87)80011-3

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Authors
Schwartz, J., & Shklar, G.
Affiliations
Harvard University (US)
Corresponding author
Shklar, Gerald
Venue
Journal of Oral and Maxillofacial Surgery
Publisher
Elsevier BV
Published
1987-06
Volume
45
Issue
6
Pages
510-515
ISSN
0278-2391 (ISSN-L)
OpenAlex
W2012180377
Cited by
109
References
13
Citations by year
2025: 1 · 2024: 3 · 2023: 4 · 2022: 3 · 2021: 2 · 2019: 6 · 2018: 3 · 2017: 2 · 2016: 1 · 2015: 7 · 2014: 2 · 2013: 5 · 2012: 4
FWCI
13.15
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Oral and Maxillofacial Surgery (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Seaweed-derived Bioactive Compounds
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cancer and biochemical research
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Medicinal Plant Research
Keywords
tumor regression, beta-carotene, algae extract, Spirulina, Dunaliella, canthaxanthin, isotretinoin, buccal pouch, hamster, oral cancer, chemoprevention
MeSH terms
Cyanobacteria, Chlorophyta, Animals, Carcinoma, Squamous Cell, Carotenoids, Cricetinae, Male, Mesocricetus, Mouth Mucosa, Mouth Neoplasms, Neoplasms, Multiple Primary, Plant Extracts, Remission Induction, Tretinoin, Vitamin E, Isotretinoin, Canthaxanthin

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