Insights in Biomedicine Open Access

In order to know about the conformational behavior of isotretinoin (13–cis retinoic acid) and tretinoin (all–trans retinoic acid (ATRA)) Nano particles under synchrotron radiations in which the accelerating particle beam travels around a fixed closed–loop path (Figure 1), we have calculated the optimized molecular geometries of isotretinoin (13–cis retinoic acid) and tretinoin (all–trans retinoic acid (ATRA)) Nanoparticles. Calculations are carried out on the structures of these Nano compounds using Hartree–Fock (HF) calculations and also Density Functional Theory (DFT) methods by performing HF, PM3, MM2, MM3, AM1, MP2, MP3, MP4, CCSD, CCSD(T), LDA, BVWN, BLYP and B3LYP levels of theory using the standard 31G, 6–31G*, 6–31+G*, 6–31G(3df, 3pd), 6–311G, 6–311G* and 6–311+G* basis sets of the Gaussian 09 [1–24]. The equilibrium structures and comparative heats of formation have been calculated and analyzed for these Nano compounds. A comparative study of shows that the HF optimized molecular structures of the isotretinoin (13–cis retinoic acid) and tretinoin (all–trans retinoic acid (ATRA)) Nano particles are in good arrangement with those of the HF/6–31G(3df, 3pd) method (Figure 2).

Figure 1a: Molecular structure of isotretinoin (13cis retinoic acid) Nano particles.

Figure 1b: Tretinoin (alltrans retinoic acid (ATRA)) Nano particles [114].

Figure 2: Optimized molecular structure of isotretinoin (13cis retinoic acid) Nano particles in the HF/631G (3df, 3pd) method [114].

On the other hand, isotretinoin (13–cis retinoic acid) and tretinoin (all–trans retinoic acid (ATRA)) Nano particles under synchrotron radiations in which the accelerating particle beam travels around a fixed closed–loop path are spread throughout nature which motivates their use as oral pharmaceutical Nano drugs primarily used to treat severe nodular acne which motivates their use as reaction substrates [25–55]. Rarely, they are also used to prevent certain skin cancers (squamous–cell carcinoma) and also in the treatment of other cancers under synchrotron radiations in which the accelerating particle beam travels around a fixed closed–loop path [25–55]. Moreover, they are used to treat harlequin–type ichthyosis, a usually lethal skin disease, and lamellar ichthyosis under synchrotron radiations in which the accelerating particle beam travels around a fixed closed–loop path [25–55]. It should be noted that they are retinoid, meaning they are related to vitamin A (beta–carotene), and are found in small quantities naturally in the body under synchrotron radiations in which the accelerating particle beam travels around a fixed closed– loop path [25–55]. Isotretinoin (13–cis retinoic acid) isomer, tretinoin (all–trans retinoic acid (ATRA)), is also an acne drug under synchrotron radiations in which the accelerating particle beam travels around a fixed closed–loop path [25–55]. A high number of their oxygenated derivatives are used as flavours and fragrances in the food and perfume industries under synchrotron radiations in which the accelerating particle beam travels around a fixed closed–loop path [25–55].

In the course of our editorial, we have investigated the isotretinoin (13–cis retinoic acid) and tretinoin (all–trans retinoic acid (ATRA)) Nano particles as anti–cancer Nano drugs under synchrotron radiations in which the accelerating particle beam travels around a fixed closed–loop path. Also, in the present editorial, we have calculated the optimized molecular geometries of isotretinoin (13–cis retinoic acid) Nano particles (Figure 2). This anti–cancer Nano drug is used to manufacture a number of products for the pharmaceutical, biochemical, medical and medicinal industries under synchrotron radiations in which the accelerating particle beam travels around a fixed closed–loop path. This anti–cancer Nano drug is also the precursor for creation of many pharmaceutical, biochemical, medical and medicinal Nano compounds under synchrotron radiations in which the accelerating particle beam travels around a fixed closed–loop path. Therefore, it can be concluded that in order to know more about the conformational behavior of this Nano compound, we have investigated conformational analysis of it under synchrotron radiations in which the accelerating particle beam travels around a fixed closed–loop path.

The high level Density Functional Theory (DFT) method with 6–31G(3df, 3pd) basis set is used to obtain the optimum structures of isotretinoin (13–cis retinoic acid) Nano particles. The HF– optimized molecular structures were used as the initial geometry in these Density Functional Theory (DFT) calculations. In addition, a comparative study shows that the HF optimized molecular structures of the isotretinoin (13–cis retinoic acid) Nano particles are in good arrangement with those of the HF/6–31G (3df, 3pd) method. Furthermore, similar to the HFx method, HF/6–31G (3df, 3pd) heats of formation is the largest for isotretinoin (13–cis retinoic acid) Nano particles and the least for tretinoin (all–trans retinoic acid (ATRA)) Nano particles. Therefore, it can be concluded that HF method can approximate the optimized molecular structures of isotretinoin (13–cis retinoic acid) and tretinoin (all–trans retinoic acid (ATRA)) Nano particles within an acceptable and reasonable accuracy and precision in much shorter times.

References

1. Karakula-Juchnowicz H, Kowal-Popczak A, Dzikowski M, Juchnowicz D, Dzikowska I, et al. (2016) Affective disorders as potential complication of anti-acne treatment with isotretinoin: A case series.J Affect Disord204: 154-158.
2. Hansen TJ, Lucking S, Miller JJ, Kirby JS, Thiboutot DM, et al. (2016) Standardized laboratory monitoring with use of isotretinoin in acne.J Am AcadDermatol75(2): 323-328.
3. Kory S, Terri N, Eliot M (2016) Depression screening using health questionnaires in patients receiving oral isotretinoinfor acne vulgaris. J Am AcadDermatol75(1): 237-239.
4. Jerry T, Sanwarjit B, Karishma D, Sanja K (2016) Oral Isotretinoin: New developments relevant to clinical practice. Dermatologic Clinics34(2): 175-184.
5. Mundluru SN, Safer JD, Larson AR(2016) Unforeseen ethical challenges for isotretinoin treatment in transgender patients. IInternational Journal of Women's Dermatology 2(2): 46-48.
6. Nagler AR, Milam EC, Orlow SJ (2016) The use of oral antibiotics before isotretinoin therapy in patients with acne. J Am AcadDermatol74(2): 273-279.
7. Yeung H, Chen SC, Katz KA, Stoff BK (2016) Prescribing isotretinoin in the United States for transgender individuals: Ethical considerations.J Am AcadDermatol75(3): 648-651.
8. Haddock ES, Eichenfield LF (2016) High-dose isotretinoin: Bigger dents in wallets? J Am AcadDermatol75(2): e75-e76.
9. Emilie S, Éric V, Henri C,Elie A, Bernard C, et al. A randomized-controlled trial of oral low-dose isotretinoinfor difficult-to-treat papulopustular rosacea. J Invest Dermatol 136(6): 1124-1129.
10. Esther J,Van Zuuren, Zbys F (2016) Low-dose isotretinoin: An option for difficult-to-treat papulopustular rosacea.J Invest Dermatol 136(6): 1081-1083.
11. Zeitany AE, Bowers EV, Morrell DS (2016) High-dose isotretinoin has lower impact on wallets: A cost analysis of dosing approaches.J Am AcadDermatol74(1): 174-176.
12. Papich MG (2016) Isotretinoin. In: Saunders Handbook of Veterinary Drugs, (4thedn), W.B. Saunders, St. Louis 416.
13. Kelhälä H, Aho V, Fyhrquist N, Pereira P, Kubin M, et al. (2016) Isotretinoin and lymecycline treatments modify the skin microbiota in acne. J Invest Dermatol136(9): S232.
14. Foolad N, Burney W, Shafizadeh T, Watkins S, Sivamani RK (2016) The influence of tretinoin and isotretinoin on the sebaceous gland lipidome and lipid mediators.J Invest Dermatol136(5): S51.
15. AlSabbagh MM (2016)Steatocystomamultiplex: A review. Journal of Dermatology & Dermatologic Surgery 20(2): 91-99.
16. Hyunhee P, Stanley S (2016) Safety considerations and monitoring in patients treated with systemic medications for acne. Dermatologic Clinics 34(2): 185-193.
17. Zaenglein AL, Pathy AL, Schlosser BJ, Alikhan A, Baldwin HE, et al. (2016) Guidelines of care for the management of acne vulgaris.J Am AcadDermatol74(5): 945-973.e33.
18. LaytonAM (2016) Top ten list of clinical pearls in the treatment of acne vulgaris. Dermatologic Clinics 34(2): 147-157.
19. Gregory RD, Maria ED, James A, Jenifer L (2016)Staphylococcus aureus carriage rates and antibiotic resistance patterns in patients with acne vulgaris.J Am AcadDermatol74(4): 673-678.
20. Evan AR, Arielle RN, Marie CL (2016) A potential role for the dermatologist in the physical transformation of transgender people: A survey of attitudes and practices within the transgender community. J Am AcadDermatol75(2): e73.
21. Greywal T, Zaenglein AL, Baldwin HE, Bhatia N, Chernoff KA, et al.(2016)LB784 Acne fulminans and its variants: Evidence-based expert panel recommendations. J Invest Dermatol 136(8): B6.
22. Khatibi B, Bambe A, Chantalat C, Resche-Rigon M, Sanna A, et al.(2016)Télédermatologie en milieu carcéral: étuderétrospective de 500 télé-expertises, Annales de Dermatologie et de Vénéréologie 143(6–7): 418-422.
23. Ali FM, Cueva A, Vyas J, Atwan AA, Piguet V, et al.(2016) Finlay 031, The impact of interventions on quality of life in psoriasis and the concept of multiple minimal clinically important difference (MCID): a systematic review.J Invest Dermatol 136(9): S166.
24. Turno-Krecicka A, Grzybowski A, Misiuk-Hojlo M, Patryn E, Czajor K, et al. (2016) Ocular changes induced by drugs commonly used in dermatology. Clinics in Dermatology 129-137.
25. Fuentes J, Foolad N, Burney W, Shafizadeh T, Singh S, et al. (2016) Retinoid induced changes in the fatty acid profile of sebum and its effect on bacterial growth. J Invest Dermatol136(5): S123.
26. Touloei K, Tongdee E, Nousari C(2016) Diffuse dermal angiomatosis: A case report and review of the literature.J Invest Dermatol136(5): S34.
27. Zeichner JA, Del Rosso JQ(2016) Acne and the Internet. Dermatologic Clinics 34(2): 129-132.
28. Levy JMS, Richler D, Mahmood MN, Brassard A(2016) Pyodermagangrenosum associated with alitretinoin therapy. JAAD Case Reports 2(2): 135-137.
29. Pfaff J, Michael D (2016) Osteoid osteoma. J of Emerg Med 50(5): 780-781.
30. Heinonen T, Huttala O, Toimela T(2016) Pathway specific assay (1): The assessment of angiogenesis/vasculogenesis in the context of developmental toxicity. Toxicology Letters 258: S40.
31. Li WQ, Cho E, Khalili H, Wu S, Chan AT, et al.(2016) Use of tetracycline, and risk of incident inflammatory bowel disease in women.ClinGastroenterolHepatol14(2): 220-225.
32. Tille KS, Rans TS (2016) Theatypical itch that rashes-Disseminated and recurrent infundibulofolliculitis(DRIF) in an atopic African American male.J Allergy ClinImmunol137(2): AB149.
33. Alcántara-Reifs CM, Salido-Vallejo R, Garnacho-Saucedo G, García-Nieto AV(2016)Otophyma: a rare variant of phymatous rosacea.Am J Otolaryngol37(3): 251-254.
34. Faisal RA, Emma EC (2016) Management of skin cancer in the elderly. J GeriatrOncol7(3): 219-220.
35. McCarty M(2016) Evaluation and management of refractory acne vulgaris in adolescent and adult men. Dermatologic Clinics 34(2): 203-206.
36. Pizzorno JE, Murray MT, Joiner-Bey H (2016) 1 - Acne vulgaris and acne conglobata, In: The Clinician's Handbook of Natural Medicine (3rdedn), Churchill Livingstone, Edinburgh.
37. Papich MG(2016) Vitamin A, In: Saunders Handbook of Veterinary Drugs (4thedn), W.B. Saunders, St. Louis.
38. Iván PU, Ethan D, Powel HB (2016)Retinoids and rexinoids in cancer prevention: From laboratory to clinic. Seminars in Oncology 43(1): 49-64.
39. Stephen EW (2016) Practice gaps: Drug reactions. Dermatologic Clinics 34(3): 311-318.
40. Sandra P, Dane H, Steven RF (2016) Use of topical retinoids by dermatologists and non-dermatologists in the management of acne vulgaris.J Am AcadDermatol74(6): 1252-1254.
41. Christopher KO, Matthew W, Krishna D (2016) Raised Intracranial pressure secondary to vitamin overdose.Am J Med 129(6): e9-e10.
42. Burillo-Martinez S, Maroñas-Jimenez L, Palencia-Pérez SI, Vanaclocha-Sebastián F, López-Gómez S(2016) Failure of photodynamic therapy (PDT) in 3 patients with folliculitis decalvans.J Am AcadDermatol 74(4): e69-e70.
43. Heather A, Chelsey C, Kristen MG (2016) Anoverview of rosacea and its challenges. Physician Assistant Clinics 1(2): 255-264.
44. Khumalo NP, Shaboodien G, Hemmings SM, Moolman-Smook JC, Stein DJ(2016) Pathologic grooming (acne excoriee, trichotillomania, and nail biting) in 4 generations of a single family. JAAD Case Reports 2(1): 51-53.
45. Van der Zee HH, Gulliver WP(2016) Medical treatments of hidradenitissuppurativa: More options, less evidence. Dermatologic Clinics 34(1): 91-96.
46. Maroñas-Jiménez L, Krakowski AC(2016) Pediatricacne: Clinical patterns and pearls. Dermatologic Clinics 34(2): 195-202.
47. Ergin C, Sirin SÇ, Gönül M, Khurami FA(2016) Generalized follicular mucinosis treated with narrow band ultraviolet B radiation. The Kaohsiung Journal of Medical Sciences 32(8): 434-435.
48. Yasser A, Yazeed A (2016)Steatocystoma multiplex limited to the forearms. J DermatolDermatolSurg20(2): 146-148.
49. Ruiz-Villaverde R, Pérez-López I, Aneiros-Fernández J(2016) Follicular papules and erythematous plaques on the back, ActasDermo-Sifiliográficas.
50. Kiyanna W, Kanade S (2016) Evaluation and management of the patient with multiple syringomas: A systematic review of the literature.J Am AcadDermatol74(6): 1234-1240.
51. Wen-Hui C, Chien-Ping C (2016) Erosive pustulardermatosis of the scalp in an elderly patient. DermatologicaSinica 34(2): 106-107.
52. Paul A, Matt V (2016) Cumulative meta-analysis by precision as a method to evaluate publication bias. Journal of Dermatological Science 83(3): 251-253.
53. Natasha K, Benjamin LC, Sebastien B, Emmanuel D, Jean-Frederic C (2016) Features of patients with Crohnâ€Âââ€Å¾Â¢sdisease and hidradenitissuppurativa. Clinical Gastroenterology and Hepatology 14(1): 71-79.
54. Joseph EP, MichaelTM, Herb JB (2016) 50 - Lichen planus, In: The Clinician's Handbook of Natural Medicine, (3rdedn), Churchill Livingstone, Edinburgh.
55. Vikas P (2016) Median canaliform dystrophy of heller occurring on thumb and great toe nails. Medical Journal Armed Forces India 72(2): 178-179.