Research Article

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1,2-Dimethylhydrazine; Aberrant Crypt Foci; Animals; Antineoplastic Agents, Phytogenic; Asteraceae; Colorectal neoplasms; DNA damage; Ethanol; male; Mice; Micronucleus tests; Plant Extracts; Xenograft Model Antitumor Assays

The objective of this study was to evaluate the effect of Moquiniastrum polymorphum ssp floccosum ethanolic extract (MPEE) on 1,2 dimethylhydrazine (DMH)-induced colorectal carcinogenesis in mice. Forty-two male Swiss mice (Mus musculus) were subdivided into six groups (N = 7/group): negative control, DMH, MPEE, pre-treatment, simultaneous, and post-treatment. Results showed that MPEE has ... more

S.M.A. Limeiras; B.C. Oliveira; L.R. Pessatto; J.R. Pesarini; C.A.L. Kassuya; A.C.D. Monreal; W.B. Cantero; R. Antoniolli-Silva; A.C.M.B. Antoniolli-Silva; M.E.A. Stefanello; R.J. Oliveira
2017 Apr 13
Asteraceae; Genotype; Microsatellite Repeats; Phylogeny; Polymorphism, Genetic

Yacon cultivation has been intensified and the investigations of this crop have increased at the scientific, agricultural, and social levels because the roots of yacon show beneficial properties for human health, such as reducing cholesterol and glucose blood levels. Since the investigations involving yacon are very recent, there is little information available in terms of the genetic ... more

R.M. Lorenzoni; F. Menine; M. Júnior; F.L. Oliveira; T.C.B. Soares
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Endemic species; Genetic diversity; Pinus krempfii; Population structure; SSR markers

Pinus krempfii Lecomte (Pinaceae) is an endemic tree to Vietnam with restricted habitats at higher altitudes in the highlands. In this study, genetic variation of four populations of P. krempfii was assessed using 17 microsatellite markers (single sequence repeats). Of these 17 markers, eight were polymorphic, and among the 42 putative alleles amplified, 32 were polymorphic ( ... more

D.T. Phong; T.T. Lieu; V.T.T. Hien; N.T. Hiep
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ABGD; Candidate species; Endemic species; Guiana Shield; Xingu Basin

The genus Atelopus is one of the most diverse of the Bufonidae family; because of their bright color, they are referred to as harlequin frogs. They occur in mature tropical forest areas and in this region, these forests are under anthropic pressure and limited to fragments, which facilitates the action of pathogenic fungi. One of these toad species, ... more

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Dalbergia cochinchinensis; Endemic species; Genomic DNA extraction; Inner bark

Dalbergia cochinchinensis (Fabaceae) is known as Thai rosewood. It is a Thai native and widespread throughout Thailand. Due to it being a hardwood tree, it became a valuable hardwood tree species for its commercial value for luxury furniture and as a first-class prime timber, which has made it a potentially endangered species. For genetic studies of this ... more

X.C. Mo; P.P. Wangsomnuk
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Adult; Aged; Aged, 80 and over; Arabs; Colorectal neoplasms; Exons; Female; Humans; male; Middle Aged; Mutation; Mutation Rate; Prognosis; Proto-Oncogene Proteins p21(ras); Retrospective Studies; Saudi Arabia; Survival analysis; Young Adult

Mutations in codons 12/13 of K-ras exon 2 are associated with reduced benefit from anti-epidermal growth factor receptor antibody treatment for metastatic colorectal cancer (CRC). Here, we evaluated the frequency of K-ras mutations and their relationship with clinicopathological features and treatment outcomes in Saudi Arabian patients with CRC. The genetic status of K-ras was determined in ... more

J. Zekri; A. Al-Shehri; M. Mahrous; S. Al-Rehaily; T. Darwish; S. Bassi; E. Taani; A. Zahrani; S. Elsamany; J. Al-Maghrabi; B.B. Sadiq
2017 Jun 20
Antifungal Agents; Bacteria; Bacterial Proteins; Biodiversity; Biotechnology; DNA, Ribosomal; Endophytes; Genetic variation; Hydrolases; Rhizosphere; Saudi Arabia; Seawater; Wetlands

Marine bacteria have been exceptional sources of halotolerant enzymes since decades. The aim of the present study was to isolate bacteria producing hydrolytic enzymes from seven different mangroves collected from the coastal area of Thuwal, Jeddah, Saudi Arabia, and to further screen them for other enzymatic and antifungal activities. We have isolated 46 different rhizo- and endophytic ... more

F. Bibi; I. Ullah; S.A. Alvi; S.A. Bakhsh; M. Yasir; A.A.K. Al-Ghamdi; E.I. Azhar
10/21/2017
FVL; MTHFR; PTH; RSM; Saudi Arabia
Maternally inherited thrombophilia could be one of the causes of recurrent spontaneous miscarriage (RSM). We aimed to investigate the frequency of three thrombotic gene variants; factor V Leiden (FVL; G1691A), prothrombin (PTH; G20210A), and methylenetetrahydrofolate reductase (MTHFR; C677T) in Saudi patients diagnosed with RSM. A case control study was conducted ... more
F. Eldeen; A. Badawy; A. AlSel; M.S. Fawzy
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Breast cancer; Genetic polymorphism; HLA-G; Saudi Arabia

Human leukocyte antigen-G (HLA-G) has been associated with various immune diseases, including malignancies. The 14-base pair (bp) insertion/deletion (indel) polymorphism (rs16375) in exon 8 of the 3′ untranslated region (3′ UTR) of the HLA-G gene has been reported to influence HLA-G protein expression. We investigated the relationship between the 14-bp indel ... more

S.Y.Al Omar; L. Mansour
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Colorectal cancer; Genetic association; HLA-G; Immune tolerance; Saudi Arabia

Human leukocyte antigen (HLA) G, a non-classical HLA class I (MHC class I) molecule, is characterized by a low degree of polymorphism, unlike classical MHC-I. The 14-base pair insertion/deletion (indel) polymorphism (rs16375) in exon 8 of the 3′ untranslated region has been reported to control HLA-G expression transcriptionally and ... more

A. Hassan; A. Omar; H. Halawani; M. Arafah; S. Alqadheeb; J. Al-Tamimi; L. Mansour

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