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In this case report, photosensitization occurred in Shorthorn calves from three herds in Missouri, with skin lesions and mild liver damage, but affected calves recovered within three weeks.

This study reports a case of hepatogenic photosensitization in a 22-day-old lactating Tabapuã calf, induced by toxins ingested via breast milk from a mother fed Brachiaria decumbens pasture; treatment including pasture removal and medicinal intervention led to symptom remission.

This study reports that combining low level laser treatment with liposome-delivered methylene blue may effectively target sebaceous glands in mice, with efficacy influenced by laser timing and drug absorption.

This study found that applying superoxide dismutase (SOD) gel on mice protected against hair graying caused by UV-A and psoralen exposure, suggesting photosensitization may be a factor in hair aging.

This review discusses the cosmetic use and safety of Hypericum Perforatum Extract and Oil, finding that current data are insufficient to support their safety in formulations due to a lack of comprehensive testing.

This review discusses the use of human and animal-derived placental and umbilical extracts in cosmetics, highlighting insufficient data to establish their safety and recommending they should not have metabolic or endocrine activity.

In this study, a superoxide dismutase gel prevented hair graying in mice exposed to photosensitization, suggesting that antioxidants can protect against oxidative damage involved in hair aging.

This review discusses how skin lesions and haircoat changes in adult horses can indicate systemic diseases, emphasizing the need for veterinary evaluation, and reports no new clinical findings.

This study found that low-dose topical alpha-terthienyl combined with UVA radiation can induce cutaneous photosensitization in guinea pigs, suggesting a possible photochemotherapy approach for skin diseases like psoriasis.

This study found that topical alpha-terthienyl combined with UVA radiation rapidly induced dose-dependent cutaneous photosensitization in guinea pigs, suggesting potential for photochemotherapy in skin disorders without future carcinogenic risks.

This review discusses detoxification methods for poisonous plants in Ayurvedic medicine, detailing purification techniques and their pharmacological effects, but it reports no new results.

Certain skin drugs and topical agents, including some natural extracts and fragrances, can cause allergic reactions. Some hair dyes and extensions, as well as minoxidil, a hair growth treatment, can also cause allergies. Botulinum toxin A can effectively reduce sweat but may have temporary side effects.

This review highlights the role of the skin's photosensory system in mediating responses to UVA radiation, contributing both to immediate protective effects and to broader circadian and seasonal adaptations, but reports no new experimental results.

This review discusses the mechanisms by which sunlight exposure aggravates hair aging and highlights the role of hair pigments in providing photochemical protection, reporting no new results.

This chapter discusses photodynamic therapy and its potential applications beyond cancer treatment, including conditions like alopecia and angina, but reports no new clinical findings.

This study reports that melanocytes form a defined photoresponsive network in the skin that reads environmental light cycles and may influence the sleep-waking cycle similar to the pineal gland.

Iron deficiency is not a significant cause of hair loss in women.

Bath PUVA therapy works well for a skin condition without as many cancer risks and is cheaper, and iron deficiency might not cause female hair loss.

Monocyte-derived dendritic cells play a key role in UVB-induced skin sensitivity and inflammation.

This review discusses the effects of visible light on human skin, highlighting its role in pigmentation, thermal damage, and the treatment of several skin conditions, while noting limited sunscreen protection against it; no new clinical results are reported.

This study found that sunlight exposure causes significant structural and chemical damage to hair, including cuticle loss, cortex damage, and discoloration, with water playing a major role in discoloration of brown hair.

This study found that in mouse melanocytes, the cytoplasmic dynein complex component Dynlt3 is necessary for proper melanosome transport, acidity regulation, and effective transfer to keratinocytes, linking it to skin pigmentation processes.

In this review, the researchers highlight LED therapy as an emerging and safe treatment for skin inflammatory conditions, aging, and hair growth disorders, noting its integration into dermatological practice but emphasizing the need for more controlled studies to confirm its efficacy.

This review discusses canine dermatomyositis, highlighting its genetic basis, clinical manifestations, and the need for improved treatment options, without reporting new findings.

This study found that hyperpigmentation following contact immunotherapy for severe alopecia areata may indicate poor treatment responsiveness and aligns with characteristics of pigmented contact dermatitis.

In this study, UVB irradiation increased mast cell degranulation only when skin was innervated, suggesting that the interaction between mast cells and nerve fibres may exacerbate solar elastosis by promoting dysfunctional dermal elastic fiber accumulation, but further research is needed for confirmation.

This study found that higher melanin concentration in black hair offers photoprotection against sunlight-induced protein damage in the cortex, whereas the cuticle experiences similar photodamage regardless of hair pigmentation.

This study reports that A132, a hair dye ingredient, induces phototoxicity and photogenotoxicity via mitochondrial apoptosis when exposed to sunlight, suggesting potential risks of oxidative stress and hair damage.

This study reported that UVR induced PKCε phosphorylation of Stat3 in transgenic mice, suggesting a role in enhancing sensitivity to UVR-related skin cancer development.