Review Article

The Great Healing Potential Hidden in Plant Preparations of Antioxidant Properties: A Return to Nature?

Table 19

The protective effects of plant origin materials in animal models of various diseases.

ReferencePlant extract, dose, way and time of treatment, and animalsDisorder, inducing factor, and negative effectsProtective effects of plant materialEffects of plant per se

Benhelima et al. [139]Nigella sativa L. seeds essential oil, 5 mL/kg b.w. from 1st to 28th or from 15th to 28th days, p.o.
Male Wistar rats, 120-130 g
Lithiasis induced by 0.75% ethylene glycol (EG) and 1.0% ammonium chloride in drinking water for 28 days, first 3 days both, then only EG, for 25 days
Body weight: ↓
Urine: Mg, Ca ↓, oxalate, UA, phosphate ↑
Serum: CR, UA, BUN ↑
Kidney: oxalate, Ca, phosphate ↑
From 1st to 28th
Body weight: (++)
Urine: Ca, Mg, oxalate, UA, phosphate (++)
Serum: CR, UA, BUN (++)
Kidney: oxalate, Ca, phosphate (++)
From 15st to 28th
Body weight: (++)
Urine: Ca, Mg, oxalate, UA, phosphate (++)
Serum: CR (+), UA, BUN (++)
Kidney: oxalate, Ca, phosphate (++)
The latter treatment showed worse effects
Not studied

Chang et al. [140]Lycium barbarum fruit water extracts
Blended: particles
Submicron: particles
Dietary pretreatment: 250 mg/kg for 54 days, p.o.
Male Sprague-Dawley rats, 8–10 week, 200-300 g
Retinal degeneration induced by white cool light, the intensity 1,400–1,500 lux for 2 days, 12 h light/12 h dark cycle
Retinal thickness: ↓
Retina: GSSG+GSH ↓, MDA↑
Submicron extract: retinal thickness (++)
Retina: GSSG+GSH ↑, MDA (+++)
Blended extract: retinal thickness (+)
Retina: GSSG+GSH (++), MDA (+++)
Not studied

Cojocariu et al. [141]Chrysanthellum americanum polyphenolic (butanol) fraction of 80% ethanolic extract
100 mg/kg b.w., i.g., 2 days during and 4 days after stress paradigm
Female Wistar rats about 200 g
Irritable bowel syndrome animal model induced by multifactorial stress exposure paradigm for 7 days
Temporal lobe: SOD and GPx ↓, MDA ↑
Temporal lobe: SOD and GPx, MDA (++)None

Sdayria et al. [41]Euphorbia retusa leaf methanol extract
Pretreatment 200 mg/kg, p.o.
Swiss albino mice, 20–30 g
Inflammation, induced by 1% carrageenan (in 0.9%NaCl) injection of 100 μL into the subplantar region of the right hind paw
Hind paw: MDA↑, SOD, CAT, GPx ↓
Liver: SOD, CAT, GPx ↓
Hind paw: MDA, CAT, GPx, SOD (++)
Liver: SOD, CAT, GPx (++)
Not studied

Hatipoğlu et al. [142]Crataegus orientalis M Bieber. fruit 70% ethanol extract
100 mg/kg/day, orogastrically, at placement of the ligature, for 11 days
Male Wistar rats, aged 4 months, about 340 g
Periodontitis caused by submerging
a 4/0 silk ligature in the sulcus of the mandibular right first molars of rats, kept subgingivally for a period of 11 days
Serum: TOS, OSI ↑, TAS ↓
Interdental area between first and second molars: inflammatory cells, osteoclasts, osteoblasts ↑
Serum: TOS, OSI, TAS (+++)
Interdental area between first and second molars: osteoblasts (0), inflammatory cells and osteoclasts (++)
Not studied

Konda et al. [138]Azima tetracantha root
95% ethanol extract
Pretreatment 250 or 500 mg/kg, p.o., 60 min prior to glycerol
Male Wistar albino rats, 150-250 g
Acute renal failure caused by hypertonic glycerol, a single dose of 8 mL/kg, i.m., into both hind limbs
Serum: CR, BUN ↑, TP, ALB ↓
Urine output: ↓
Kidney: SOD, GSH, GR, GPx, CAT ↓
The lower dose:
Serum: TP, CR, BUN, ALB (++)
Urine output: (++)
Kidney: GPx (0), CAT (+), SOD, GR (++), GSH (+++)
The higher dose:
Serum: TP, ALB (++), BUN, CR, (+++)
Urine output: (+++)
Kidney: SOD, GSH, GR, GPx, CAT (+++)
Only 500 mg/kg studied
Urinary output: ↑
Kidney: SOD ↓

Panth et al. [36]Salicornia europaea water extract
1400 mg/kg/day p.o., for 6 weeks
Male rats: spontaneous hypertensive (SHR) rats and Sprague-Dawley, 6 weeks, about 200 g
Vascular dysfunction and hypertension, NaCl-induced, 800 mg/kg/day, p.o. for 6 weeks
SD rats: systolic and diastolic pressure ↑
SHR rats: systolic and diastolic pressure ↑
SD rats: systolic pressure (+++), diastolic pressure (++)
SHR rats: systolic pressure (++), diastolic pressure (+)
Not studied

El-Kashlan et al. [143]Phoenix dactylifera L. date palm pollen (commercial product)
80% ethanol extract
150 mg/kg, p.o., every day for 56 days
Male Wistar rats, about 250 g
L-thyroxine-induced hyperthyroidism 300 μg/kg, i.p., every day for 56 days
Weight: final body, testes, epididymis, prostate gland, seminal vesicle↓
Serum: fT3, fT4, E2 ↑, LH, FSH, T, TSH ↓
Testis: SDH, LDH, ALP, ACP, G6PD, CAT, SOD, GPx, GR, GSH ↓, MDA, NO, AST, ALT ↑
6-N-propyl-2-thiouracil-induced hypothyroidism 10 mg/kg, i.p., every day for 56 days
Weight: final body, testes, epididymis, prostate gland, seminal vesicle↓
Serum: fT3, fT4, LH, FSH, T ↓, E2, TSH ↑
Testis: SDH, LDH, ALP, ACP, G6PD, CAT, SOD, GPx, GR, GSH ↓, MDA, NO, AST, ALT ↑
Hyperthyroidism
Weight: final body, testes, epididymis, prostate gland, seminal vesicle (++)
Serum: fT3, TSH, E2 (++), fT4, LH, FSH, T (+++)
Testis: ALP (++), SDH, LDH, ACP, G6PD, GR, GSH, MDA, NO, AST, ALT, GPx (+++), CAT, SOD ↑
Hypothyroidism
Weight: final body, testes (0), epididymis, prostate gland, seminal vesicle (++)
Serum: TSH, fT3, fT4 (0), E2 (++), LH, FSH, T (+++)
Testis: ALP, NO (++), SDH, LDH, ACP, G6PD, GR, GSH, MDA, AST, ALT (+++), GPx, CAT, SOD ↑
Weight: prostate gland, epididymis, seminal vesicle ↑
Serum: fT3, fT4 ↓
LH, T, E2 ↑
Testis: SDH, LDH, GR, CAT, SOD, GPx, GSH ↑, MDA, NO ↓

You et al. [144]Fermented papaya extracts (obtained by fermentation of papaya through Aspergillus oryzae for 3 months and then for 3 months using Saccharomyces cerevisiae yeasts)
30, 15 or 5 mL/kg. p.o., days 1–30
Female SPF Sprague-Dawley rats, 180–200 g, 7-8 weeks
Mammary gland hyperplasia induced by estrogen and progestin, 0.5 mg/kg of estradiol benzoate
Days 1-25 and 4 mg/kg of progestin days 26 – 30, i.m.
Serum: E2, progesterone, LH, FSH, MDA, AST, total bilirubin ↑; GPx, SOD, ALT ↓
Liver: MDA ↑; GPx, SOD ↓
Mammary gland: GPx, SOD ↓, hyperplasia, MDA ↑
Serum: MDA (0 5, ++ 15 and 30), progesterone (+ 5 and 15, ++ 30), total bilirubin (0 5, ++ 5, +++ 30), E2 (++ all doses), LH (+ 5, ++ 5, +++ 30), FSH, ALT, AST (++ 5 and 15, +++ 30); GPx and SOD (0 5, +++ 15 and 30)
Liver: MDA (0 5, ++ 15 and 30), GPx, SOD (0 5, ++ 15, +++ 30)
Mammary gland: hyperplasia (0 5, + 15, ++ 30), MDA, GPx (0 5, ++ 15 and 30), SOD (0 5, +++ 15 and 30)
Only 30 mL/kg studied
Serum: SOD ↑
Liver: SOD ↑

↓: a decrease vs. control; ↑: an increase vs. control; (+): a slight beneficial effect; (++): a distinct beneficial effect; (+++): a complete beneficial effect; (0): no beneficial effect.