Composition containing metal-acidic amino acid chelate accelerating absorption of metal
a technology of amino acid chelate and metal, which is applied in the direction of drug compositions, antinoxious agents, metabolic disorders, etc., can solve the problems of urination, sexual dysfunction, and -complete recovery, and achieve the effect of reducing resistance to diseases and enhancing immune functions
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example 1
Effects of Zinc-Aspartate Chelate in White Rat Model of Chronic Bacterial Prostatitis
1. Materials
[0076]As experimental animals, 12 to 16-week old Sprague-Dawley male rats, weighing 250 to 300 g, (Daehan Biolink Co., Ltd., Chungchongbuk-do, Korea) were employed for the present experiment after acclimation to a basal diet for one week. These rats were randomly assigned into a normal control group, a physiological saline-administered group and a zinc-aspartate chelate-administered group.
2. Chronic Bacterial Prostatitis Model and Administration of Zinc-Aspartate Chelate
[0077]A chronic bacterial prostatitis model was established using a white rat, according to a method of Nickel et al (Br. J. Urol. 1990, 66, 47-54). Escherichia coli ATCC 25922, known as a pathogen of prostatitis, was injected into the prostatic urethra at a density of 1×108 cells / mL.
[0078]15 mg / kg / day of a zinc-aspartate chelate dissolved in physiological saline was orally administered to prostatitis-induced rats at a gi...
example 2
Selective Translocation of Zinc-Aspartate Chelate into Prostate and Testicular Tissues
[0080]As experimental animals, 12 to 16-week old Sprague-Dawley male rats, weighing 250 to 300 g, (Daehan Biolink Co., Ltd., Chungchongbuk-do, Korea) were employed for the present experiment after acclimation to a basal diet for one week. These experimental animals were randomly assigned into a zinc sulfate-administered group, a zinc arginine-administered group and a zinc-aspartate chelate-administered group. After animals were fasted for 12 hours, each zinc sample was administered to rats, such that a zinc concentration in the sample is 40 mg / kg. After administration of the samples was complete, blood was collected at a time point of 0.5, 1, 2, 4, and 8 hours, respectively, and treated with heparin. Then, blood plasma was stored in a refrigerator and used for analysis of zinc concentrations. On the other hand, in order to examine distribution of zinc in the tissue, each zinc sample was administere...
example 3
Effects of Zinc-Aspartate Complex on Expression of Zinc Transporter Protein mRNA
[0083]In order to examine effects of zinc-aspartate complex on the expression of ZnT-2 and ZnT-4, known as zinc transporter proteins, experiments were carried out according to the following procedure.
[0084]Using Trizol Reagent (Invitrogen, USA), total RNA was extracted from 0.1 g of prostatic tissue. Using M-MLV reverse transcriptase (Invitrogen, USA), cDNA was synthesized from 5 μg of the extracted total RNA. 20 pmol of a primer was added to 3 μl of cDNA to make a volume of 20 μl and PCR was carried out as follows: initial denaturation at 95° C. for 5 min, followed by 26 cycles of denaturation at 94° C. for 1 min, annealing at an annealing temperature corresponding to conditions of each primer for 1 min and extension at 72° C. for 1 min, and final extension at 72° C. for 10 min.
[0085]Primer sequences and annealing temperatures used in PCR are set forth in Table 1 below.
TABLE 1ZnT-2F:5′-TCCATCAGTCTGGACAT...
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