Sexual dimorphism in the craniofacial growth of the guinea pig (Cavia porcellus)

2004 ◽  
Vol 259 (2) ◽  
pp. 172-181 ◽  
Author(s):  
Meredith A. Farmer ◽  
Rebecca Z. German
Keyword(s):  
Sexual Dimorphism ◽  
Guinea Pig ◽  
Craniofacial Growth ◽  
Cavia Porcellus

Design‐based stereological study of the guinea‐pig ( Cavia porcellus ) cerebellum

2021 ◽  
Author(s):  
Margherita De Silva ◽  
Javad Sadeghinezhad ◽  
Jens R. Nyengaard ◽  
Mahdi Aghabalazadeh Asl ◽  
Ava Saeidi ◽  
...  
Keyword(s):  
Guinea Pig ◽  
Cavia Porcellus

Source and stability of attractive components in guinea pig (Cavia porcellus) urine

1973 ◽  
Vol 9 (1) ◽  
pp. 43-47 ◽  
Author(s):  
Gary K. Beauchamp ◽  
Josef Berüter
Keyword(s):  
Guinea Pig ◽  
Cavia Porcellus

Facial reconstructive surgery after tumour removal in a guinea pig (Cavia porcellus)

2021 ◽  
Vol 26 (1) ◽  
pp. 1-4
Author(s):  
Anna Linda Nógrádi ◽  
Judit Kojer ◽  
Dóra Csatári ◽  
Iain Cope ◽  
Tibor Németh
Keyword(s):  
Guinea Pig ◽  
Reconstructive Surgery ◽  
Skin Flap ◽  
Advancement Flap ◽  
Cavia Porcellus ◽  
Post Surgery ◽  
Tumour Removal ◽  
Nerve Sheath ◽  
Peripheral Nerve Sheath Tumour ◽  
Made In

A 2-year-old male guinea pig (Cavia porcellus) presented with a pea-sized swelling on his right labium. The tumour was excised and reconstructive surgery was performed using a single pedicle advancement flap, leaving the bottom of the lip intact on account of it being essential for food apprehension and manipulation. Two parallel skin incisions were made in the rostrocaudal direction for almost half the length of the head and the resulting skin flap was carefully undermined, to avoid damaging the follicles and the muscles of the whiskers. The flap was carefully sutured over the excisional defect and at 1.5 months post-surgery, only a small residual scar remains. The lips are intact, the surgical site is covered with fur and many of the whiskers have regrown. Histopathology showed the excised mass to be a grade 1 soft tissue sarcoma, most likely a malignant peripheral nerve sheath tumour.

Control of the estrous cycle in guinea-pig (Cavia porcellus)

2012 ◽  
Vol 78 (4) ◽  
pp. 842-847 ◽  
Author(s):  
A. Grégoire ◽  
A. Allard ◽  
E. Huamán ◽  
S. León ◽  
R.M. Silva ◽  
...  
Keyword(s):  
Guinea Pig ◽  
Estrous Cycle ◽  
Cavia Porcellus

Ashitaba (Angelica keiskei) leaves extract cream 8% inhibited the increase of melanin amount as effective as hydroquinone cream 4% and inhibited the increase of tyrosinase enzymes not as effective as hydroquinone cream 4% in the ultraviolet B-exposed Guin

2021 ◽  
Vol 4 (1) ◽  
pp. 22-27
Author(s):  
Chynthia Friama ◽  
Anak Agung Gde Putra Wiraguna ◽  
Wimpie Pangkahila
Keyword(s):  
Guinea Pig ◽  
Sun Exposure ◽  
Ultraviolet B ◽  
Premature Aging ◽  
Control Group ◽  
Cavia Porcellus ◽  
Control Group Design ◽  
Angelica Keiskei ◽  
The Mean ◽  
Tyrosinase Enzyme

Background: Excessive sun exposure results in increased activity of the tyrosinase enzyme and the amount of melanin in the skin which causes hyperpigmentation, a sign of premature aging. The purpose of this study was to prove that Ashitaba (Angelica keiskei) leaves extract cream 8% inhibited the increase of melanin and tyrosinase enzymes as effective as hydroquinone cream 4% in the ultraviolet B-exposed guinea pig (Cavia porcellus) skin. Methods: This study used a randomized post-test only control group design. The subjects were 36 male guinea pigs (Cavia porcellus). Subjects were divided into two groups, the hydroquinone cream 4% group and the Ashitaba leaves extract cream 8% group exposed to UVB light. Skin samples were collected 48 hours after the last exposure to measure the tyrosinase enzyme levels using the ELISA method and the amount of melanin was examined by Masson-Fontana staining. Results: The mean levels of tyrosinase in the hydroquinone cream 4% group was 19.51 ± 5.16 ng/L and the Ashitaba leaves extract cream 8% group was 23.76 ± 3.09 ng/L (p = 0.005). The mean amount of melanin in the  hydroquinone cream 4% group was 2.98 ± 2.27% and the Ashitaba leaves extract cream 8% group was 4.77 ± 3.33% (p = 0.069). Conclusion: The administration of Ashitaba (Angelica keiskei) leaves extract cream 8% inhibited the increase of melanin amount as effective as hydroquinone cream 4% and inhibited the increase of tyrosinase enzymes not as effective as hydroquinone cream 4% in the ultraviolet B-exposed guinea pig (Cavia porcellus) skin.

scholarly journals Tibial osteosynthesis in a guinea pig (Cavia porcellus)

2015 ◽  
Vol 67 (1) ◽  
pp. 89-93 ◽  
Author(s):  
A.S. Macedo ◽  
M.A. Goulart ◽  
M.M. Alievi ◽  
V.S. Mombach ◽  
Í.S. Dal-Bó ◽  
...  
Keyword(s):  
Guinea Pig ◽  
Callus Formation ◽  
Cavia Porcellus ◽  
Diaphyseal Fracture ◽  
Left Tibia ◽  
Pelvic Limb

A guinea pig was presented with left pelvic limb lameness after unknown trauma. Radiographs revealed complete oblique diaphyseal fracture of the distal third of the left tibia and fibula. The guinea pig was treated surgically with an intramedullary pin. The day after surgery the guinea pig was using the limb comfortably (grade 1/5 lameness). Callus formation was obtained 21 days after surgery without complications.

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