1
|
Ashiqueali SA, Zhu X, Wiesenborn DS, Gesing A, Schneider A, Noureddine SA, Correa-Garcia CG, Masternak MM, Siddiqi SA. Calorie restriction and life-extending mutation downregulate miR-34a to facilitate lipid metabolism in the liver. Exp Gerontol 2024; 194:112506. [PMID: 38945410 DOI: 10.1016/j.exger.2024.112506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 06/26/2024] [Accepted: 06/27/2024] [Indexed: 07/02/2024]
Abstract
Ames dwarf mice (df/df) display delayed aging relative to their normal (N) siblings, living approximately 40-60 % longer. As such, investigating the mechanisms that enable these organisms to have extended lifespan is useful for the development of interventions to slow aging and deter age-related disease. Nonalcoholic fatty liver disease (NAFLD) is a condition that is characterized by the accumulation of excess adipose tissue in the liver. Previous studies highlight the potential of calorie restriction (CR) in promoting longevity, but little is known about its effects on the biomolecular processes that govern NAFLD. In this study, we examined the role of 6-month CR on genes regulating lipid metabolism in the livers of long-living df/df mice and their N littermates. Importantly, our findings showed significant downregulation of miR-34a-5p in N-CR mice and df/df mice regardless of dietary regimen. Alongside, our RT-PCR results indicated that downregulation of miR-34a-5p is correlated with the expression of metabolism-associated mRNAs involved in modulating the processes of de novo lipogenesis (DNL), fatty acid oxidation (FAO), very-low density lipoprotein transport (VLDL-T), and reverse cholesterol transport (RCT). To further verify the role of miR-34a-5p in regulating metabolic processes, we transfected the human liver cancer (HepG2) cell line with miR-34a mimic, and studied its effect on direct targets Sirt1, Ampk, and Ppara as well as downstream lipid transport regulating genes. Our findings suggest that CR and df/df life extending mutation are robust drivers of the miR-34a-5p signaling pathway and prevent the pathogenesis of age-related diseases by improving overall lipid homeostasis.
Collapse
Affiliation(s)
- Sarah A Ashiqueali
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Xiang Zhu
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Denise S Wiesenborn
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA; Department of Biotechnology, University of Applied Sciences Kaiserslautern, Zweibrücken, Germany
| | - Adam Gesing
- Department of Endocrinology of Ageing, Medical University of Lodz, Poland
| | - Augusto Schneider
- Department of Nutrition, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - Sarah A Noureddine
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Christian G Correa-Garcia
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA; Department of Medicine, San Juan Bautista School of Medicine, Caguas, Puerto Rico
| | - Michal M Masternak
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA; Department of Head and Neck Surgery, Poznan University of Medical Sciences, 61-701 Poznan, Poland
| | - Shadab A Siddiqi
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA.
| |
Collapse
|
2
|
Kim HJ, Kim YH. Exploring Acne Treatments: From Pathophysiological Mechanisms to Emerging Therapies. Int J Mol Sci 2024; 25:5302. [PMID: 38791344 PMCID: PMC11121268 DOI: 10.3390/ijms25105302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/08/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Acne vulgaris is a common dermatological condition that can present across different ages but predominantly affects adolescents and young adults. Characterized by various lesion types, the pathogenesis of acne is complex, involving genetic, hormonal, microbial, and inflammatory factors. This review comprehensively addresses current and emerging acne management strategies, emphasizing both topical and systemic treatments, procedural therapies, and dietary modifications. Key topical agents include retinoids, benzoyl peroxide, antibiotics, and other specialized compounds. Systemic options like antibiotics, hormonal therapies, and retinoids offer significant therapeutic benefits, particularly for moderate to severe cases. Procedural treatments such as laser devices, photodynamic therapy, chemical peels, and intralesional injections present viable alternatives for reducing acne symptoms and scarring. Emerging therapies focus on novel biologics, bacteriophages, probiotics, and peptides, providing promising future options. This review underscores the importance of personalized approaches to treatment due to the multifaceted nature of acne, highlighting the potential of innovative therapies for improving patient outcomes.
Collapse
Affiliation(s)
- Hyun Jee Kim
- Department of Dermatology, International St. Mary’s Hospital, College of Medicine, Catholic Kwandong University, Incheon 22711, Republic of Korea;
| | - Yeong Ho Kim
- Department of Dermatology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| |
Collapse
|
3
|
Melnik BC. Acne Transcriptomics: Fundamentals of Acne Pathogenesis and Isotretinoin Treatment. Cells 2023; 12:2600. [PMID: 37998335 PMCID: PMC10670572 DOI: 10.3390/cells12222600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/05/2023] [Accepted: 11/08/2023] [Indexed: 11/25/2023] Open
Abstract
This review on acne transcriptomics allows for deeper insights into the pathogenesis of acne and isotretinoin's mode of action. Puberty-induced insulin-like growth factor 1 (IGF-1), insulin and androgen signaling activate the kinase AKT and mechanistic target of rapamycin complex 1 (mTORC1). A Western diet (hyperglycemic carbohydrates and milk/dairy products) also co-stimulates AKT/mTORC1 signaling. The AKT-mediated phosphorylation of nuclear FoxO1 and FoxO3 results in their extrusion into the cytoplasm, a critical switch which enhances the transactivation of lipogenic and proinflammatory transcription factors, including androgen receptor (AR), sterol regulatory element-binding transcription factor 1 (SREBF1), peroxisome proliferator-activated receptor γ (PPARγ) and signal transducer and activator of transcription 3 (STAT3), but reduces the FoxO1-dependent expression of GATA binding protein 6 (GATA6), the key transcription factor for infundibular keratinocyte homeostasis. The AKT-mediated phosphorylation of the p53-binding protein MDM2 promotes the degradation of p53. In contrast, isotretinoin enhances the expression of p53, FoxO1 and FoxO3 in the sebaceous glands of acne patients. The overexpression of these proapoptotic transcription factors explains isotretinoin's desirable sebum-suppressive effect via the induction of sebocyte apoptosis and the depletion of BLIMP1(+) sebocyte progenitor cells; it also explains its adverse effects, including teratogenicity (neural crest cell apoptosis), a reduced ovarian reserve (granulosa cell apoptosis), the risk of depression (the apoptosis of hypothalamic neurons), VLDL hyperlipidemia, intracranial hypertension and dry skin.
Collapse
Affiliation(s)
- Bodo C Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, 49069 Osnabrück, Germany
| |
Collapse
|
4
|
Korkoman A, Alamri A, Al Zomia AS, Korkoman S, Qahtani SH, Alshahrani YM, Alotaibi TB, Asiri BM, Alqahtani AN, Awwadh OA, Alghamdi BA, Alshahrani A. Cross-Sectional Assessment of Dermatologists' Knowledge and Attitude Towards Isotretinoin-Related Ocular Side Effects in Aseer, Saudi Arabia. Cureus 2023; 15:e46335. [PMID: 37920642 PMCID: PMC10618121 DOI: 10.7759/cureus.46335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2023] [Indexed: 11/04/2023] Open
Abstract
BACKGROUND Acne vulgaris is a chronic inflammatory disease of the pilosebaceous unit, which includes the hair follicle, hair shaft and sebaceous gland. The only treatment that has an effect on all the main aetiological causes of acne is isotretinoin. However, it may have a variety of negative side effects. The aim of this study was to evaluate the knowledge and attitudes of dermatologists regarding ocular effects following isotretinoin prescribing in the Aseer region, Saudi Arabia. METHODOLOGY An anonymous online cross-sectional survey was conducted in August 2022 to investigate dermatologists' knowledge and attitude regarding isotretinoin-related ocular side effects in Aseer, Saudi Arabia. Participants were recruited using convenience and snowball sampling methods. RESULTS A total of 48 dermatologists were included in this survey. The age distribution ranged from 25 to over 60 years. Sixteen (37.5%) were aged 31-40 years, 29 (60.4%) were male and 20 (41.7%) were specialists. All dermatologists reported that it can cause dry eye, 32 (66.7%) reported that it can cause contact lens intolerance, 10 (20.8%) reported that it can cause a decrease in dark adaptation and two (4.2%) thought that it can cause ectopia lentis and retinoblastoma. Regarding attitude, 43 (87.5%) thought that a course of isotretinoin is not recommended if the patient has recently undergone refractive surgery, 30 (62.5%) always inform patients about ocular side effects, 31 (72.9%) do not consider referring patients for ophthalmic examinations before initiating isotretinoin, 12 (25.0%) always prescribe lubricant eye drops, 15 (31.3%) always ask patients about recent refractive surgery, 17 (35.4%) always warn patients about avoiding refractive surgery during isotretinoin use and 19 (39.6%) always inform patients concerning discomfort with contact lenses. CONCLUSIONS The survey reveals that dermatologists in Aseer, Saudi Arabia, generally have good knowledge of isotretinoin related to some ocular side effects, especially dry eye and contact lens intolerance. However, there is some variation in their practices with regard to patient education, referrals for ophthalmic examinations, the use of lubricant eye drops and refractive surgery during isotretinoin treatment. Thus, dermatologists should receive educational training on the safety profile of isotretinoin while managing acne vulgaris.
Collapse
Affiliation(s)
| | | | - Ahmed S Al Zomia
- Medicine, College of Medicine, King Khalid University, Abha, SAU
| | | | - Saad H Qahtani
- General Medicine, College of Medicine, King Khalid University, Abha, SAU
| | | | | | | | | | - Omar A Awwadh
- Medicine, College of Medicine, King Khalid University, Abha, SAU
| | - Bader A Alghamdi
- Medicine, College of Medicine, King Khalid University, Abha, SAU
| | | |
Collapse
|
5
|
Agamia NF, El Mulla KF, Alsayed NM, Ghazala RM, El Maksoud REA, Abdelmeniem IM, Talaat IM, Zaki II, Sabah RM, Melnik BC. Isotretinoin treatment upregulates the expression of p53 in the skin and sebaceous glands of patients with acne vulgaris. Arch Dermatol Res 2023; 315:1355-1365. [PMID: 36585988 PMCID: PMC10205870 DOI: 10.1007/s00403-022-02508-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/29/2022] [Accepted: 12/05/2022] [Indexed: 01/01/2023]
Abstract
The transcriptomic regulation induced by isotretinoin (13-cis retinoic acid) is still a matter of debate as short-term exposures of immortalized sebocytes with isotretinoin produced conflicting results. Based on translational evidence, it has been hypothesized that oral isotretinoin treatment upregulates the expression of the transcription factor p53. Twenty-five patients suffering from acne vulgaris were treated with isotretinoin (0.6 mg/kg body weight) for 6 weeks. Biopsies from back skin were taken before and after isotretinoin treatment for the determination of p53 expression by immunohistochemical staining, quantification of p53 protein concentration by enzyme-linked immunosorbent assay and TP53 gene expression by quantitative reverse transcription real time PCR. Fifteen socio-demographically cross-matched healthy volunteers served as controls. Isotretinoin treatment significantly increased the nuclear expression of p53 in sebaceous glands of treated patients compared to pre-treatment levels and p53 levels of untreated controls. Furthermore, the p53 protein and gene expression significantly increased in the skin after treatment. The magnitude of p53 expression showed an inverse correlation to acne severity score and body mass index. Under clinical conditions, isotretinoin induced the expression of p53, which controls multiple transcription factors involved in the pathogenesis of acne vulgaris including FoxO1, androgen receptor and critical genes involved in the induction of autophagy and apoptosis. Increased p53-FoxO1 signalling enhanced by systemic isotretinoin treatment explains the underlying transcriptomic changes causing sebum suppression but also the adverse effects associated with systemic isotretinoin therapy.
Collapse
Affiliation(s)
- Naglaa Fathi Agamia
- Department of Dermatology, Andrology and Venereology, Faculty of Medicine, University of Alexandria, Alexandria, Egypt.
| | - Khalid Fawzi El Mulla
- Department of Dermatology, Andrology and Venereology, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - Naglaa Mohamed Alsayed
- Department of Dermatology, Andrology and Venereology, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - Rasha Mohamed Ghazala
- Department of Medical Biochemistry, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | | | - Iman Mohamed Abdelmeniem
- Department of Dermatology, Andrology and Venereology, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - Iman Mamdouh Talaat
- Department of Pathology, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, UAE
| | - Inass Ibrahim Zaki
- Department of Pathology, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - Rana Mohamed Sabah
- Department of Dermatology, Andrology and Venereology, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - Bodo Clemens Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, 49076, Osnabrück, Germany
| |
Collapse
|
6
|
Scott-Emuakpor R, Vuthaluru K, Nagre A, Jawed I, Patel PA, Sidhu HK. Role of Oral Retinoids in Treatment of Acne Vulgaris With a Bioinformatics-Based Perspective of Personalized Medicine. Cureus 2023; 15:e38019. [PMID: 37228537 PMCID: PMC10207980 DOI: 10.7759/cureus.38019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/23/2023] [Indexed: 05/27/2023] Open
Abstract
Acne vulgaris is a skin condition characterized by the inflammation or hyperactivity of sebaceous glands on the skin, which results in the creation of comedones, lesions, nodules, and perifollicular hyperkeratinization. Increased sebum production, follicular blockage, and bacterial colonization may contribute to the disease etiology. Environmental factors, hormonal imbalance, and genetic predisposition can alter the severity of the disease. Its mental and monetary effects can be problematic for the society. In this study, we examined the role of isotretinoin in the treatment of acne vulgaris based on evidence from prior research. This review literature study compiled publications on the treatment of acne vulgaris from 1985 to 2022 based on PubMed and Google Scholar publications. Additional bioinformatics analyses were accompanied by GeneCards, STRING model, and DrugBank databases. These complementary analyses were designed to obtain a better perspective of personalized medicine which is highly required for dose-precise administrations of acne vulgaris treatment. Isotretinoin has been recognized as an effective treatment for acne vulgaris, particularly in cases that have been resistant to previous medications or have resulted in scarring, according to gathered data. Oral isotretinoin inhibits the proliferation of Propionibacterium acne, a critical factor in the development of acne lesions; also, it has been shown to be effective in reducing the number of Propionibacterium-resistant patients and regulating sebum production and reducing sebaceous gland size more effectively than other treatment options resulting in general improvements in skin clarity and acne severity and reduce inflammatory in 90% of patients. In addition to its efficacy, the majority of patients have shown that oral isotretinoin is well tolerated. This review highlights the use of oral retinoids, particularly isotretinoin, as an effective and well-tolerated treatment option for acne vulgaris. It has been proven that oral isotretinoin is useful for achieving long-lasting remission in patients with severe or resistant instances. Despite the fact that oral isotretinoin is related to a number of potential harmful effects, skin dryness was the most common side effect reported by patients that can be managed with the aid of suitable monitoring and drug administration against specific genes identified by genotyping of the susceptible variants of genes involved in TGFβ signaling pathway.
Collapse
Affiliation(s)
| | | | - Abhijit Nagre
- Medicine, Topiwala National Medical College & Bai Yamunabai Laxman (BYL) Nair Charitable Hospital, Mumbai, IND
| | - Inshal Jawed
- Internal Medicine, Dow Medical College, Karachi, PAK
| | - Priyansh A Patel
- Medicine, Byramjee Jeejeebhoy (BJ) Medical College, Ahmedabad, IND
- Medicine, Medical College Baroda, Baroda, IND
| | - Harmandeep K Sidhu
- Dermatology, Dayanand Medical College and Hospital, Ludhiana, IND
- Medicine, Indira Gandhi Government Medical College and Hospital, Nagpur, IND
| |
Collapse
|
7
|
Melnik BC, John SM, Carrera-Bastos P, Cordain L, Leitzmann C, Weiskirchen R, Schmitz G. The Role of Cow's Milk Consumption in Breast Cancer Initiation and Progression. Curr Nutr Rep 2023; 12:122-140. [PMID: 36729355 PMCID: PMC9974716 DOI: 10.1007/s13668-023-00457-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/06/2022] [Indexed: 02/03/2023]
Abstract
PURPOSE OF REVIEW This review evaluates cow milk's impact on breast carcinogenesis by linking recent epidemiological evidence and new insights into the molecular signaling of milk and its constituents in breast cancer (BCa) pathogenesis. RECENT FINDINGS Recent prospective cohort studies support the association between cow's milk consumption and the risk of estrogen receptor-α-positive (ER+) BCa. Milk is a complex biological fluid that increases systemic insulin-like growth factor 1 (IGF-1), insulin and estrogen signaling, and interacting hormonal promoters of BCa. Further potential oncogenic components of commercial milk include exosomal microRNAs (miR-148a-3p, miR-21-5p), bovine meat and milk factors, aflatoxin M1, bisphenol A, pesticides, and micro- and nanoplastics. Individuals with BRCA1 loss-of-function mutations and FTO and IGF1 gain-of-function polymorphisms enhancing IGF-1/mTORC1 signaling may be at increased risk for milk-induced ER+ BCa. Recent prospective epidemiological and pathobiochemical studies identify commercial milk consumption as a critical risk factor of ER+ BCa. Large meta-analyses gathering individuals of different ethnic origins with milk derived from dairy cows of varying genetic backgrounds and diverse feeding procedures as well as missing data on thermal processing of milk (pasteurization versus ultra-heat treatment) make multi-national meta-analyses unsuitable for BCa risk estimations in susceptible populations. Future studies are required that consider all vulnerable periods of breast carcinogenesis to cow's milk exposure, beginning during the perinatal period and puberty, since these are the most critical periods of mammary gland morphogenesis. Notwithstanding the need for better studies including detailed information on milk processing and vulnerable periods of human breast carcinogenesis, the available evidence suggests that dietary guidelines on milk consumption may have to be reconsidered.
Collapse
Affiliation(s)
- Bodo C Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, D-49076, Osnabrück, Germany.
| | - Swen Malte John
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, D-49076, Osnabrück, Germany
- Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm) at the University of Osnabrück, Lower-Saxonian Institute of Occupational Dermatology (NIB), Osnabrück, Germany
| | - Pedro Carrera-Bastos
- Center for Primary Health Care Research, Lund University/Region Skåne, Skåne University Hospital, 205 02, Malmö, Sweden
- Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, 28670, Madrid, Spain
- Centro de Estudios Avanzados en Nutrición (CEAN), 11007, Cádiz, Spain
| | | | - Claus Leitzmann
- Institute of Nutrition, University of Giessen, 35390, Giessen, Germany
| | - Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), RWTH University Hospital Aachen, D-52074, Aachen, Germany
| | - Gerd Schmitz
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital of Regensburg, University of Regensburg, D-93053, Regensburg, Germany
| |
Collapse
|
8
|
Janssen JAMJL. The Impact of Westernization on the Insulin/IGF-I Signaling Pathway and the Metabolic Syndrome: It Is Time for Change. Int J Mol Sci 2023; 24:ijms24054551. [PMID: 36901984 PMCID: PMC10003782 DOI: 10.3390/ijms24054551] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 03/03/2023] Open
Abstract
The metabolic syndrome is a cluster of overlapping conditions resulting in an increased incidence of type 2 diabetes, cardiovascular disease, and cancer. In the last few decades, prevalence of the metabolic syndrome in the Western world has reached epidemic proportions and this is likely due to alterations in diet and the environment as well as decreased physical activity. This review discusses how the Western diet and lifestyle (Westernization) has played an important etiological role in the pathogenesis of the metabolic syndrome and its consequences by exerting negative effects on activity of the insulin-insulin-like growth factor-I (insulin-IGF-I) system. It is further proposed that interventions that normalize/reduce activity of the insulin-IGF-I system may play a key role in the prevention and treatment of the metabolic syndrome. For successful prevention, limitation, and treatment of the metabolic syndrome, the focus should be primarily on changing our diets and lifestyle in accordance with our genetic make-up, formed in adaptation to Paleolithic diets and lifestyles during a period of several million years of human evolution. Translating this insight into clinical practice, however, requires not only individual changes in our food and lifestyle, starting in pediatric populations at a very young age, but also requires fundamental changes in our current health systems and food industry. Change is needed: primary prevention of the metabolic syndrome should be made a political priority. New strategies and policies should be developed to stimulate and implement behaviors encouraging the sustainable use of healthy diets and lifestyles to prevent the metabolic syndrome before it develops.
Collapse
Affiliation(s)
- Joseph A M J L Janssen
- Department of Internal Medicine, Division of Endocrinology, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| |
Collapse
|
9
|
Kutlu Ö, Karadağ AS, Wollina U. Adult acne versus adolescent acne: a narrative review with a focus on epidemiology to treatment. An Bras Dermatol 2023; 98:75-83. [PMID: 36253244 PMCID: PMC9837660 DOI: 10.1016/j.abd.2022.01.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/02/2022] [Accepted: 01/17/2022] [Indexed: 01/21/2023] Open
Abstract
Acne vulgaris is one of the most common chronic inflammatory diseases and is characterized by papules, pustules, comedones, and nodules. Although adolescence is the preferential age group, acne may affect various age groups. Acne shares different properties in adults and adolescents. These differences extend from epidemiology to treatments. Increased awareness of these two subtypes will allow for better management of the disease. In this review, the authors examined all aspects of acne in adults and adolescents under the light of current literature.
Collapse
Affiliation(s)
- Ömer Kutlu
- Department of Dermatology and Venereology, School of Medicine, Tokat Gaziosmanpasa University, Tokat, Turkey,Corresponding author.
| | - Ayşe Serap Karadağ
- Department of Dermatology and Venereology, Memorial Ataşehir Hospital, İstanbul, Turkey
| | - Uwe Wollina
- Department of Dermatology and Allergology, Academic Teaching Hospital Dresden, Dresden, Germany
| |
Collapse
|
10
|
The Effects of Synthetic SREBP-1 and PPAR-γ Decoy Oligodeoxynucleotide on Acne-like Disease In Vivo and In Vitro via Lipogenic Regulation. Biomolecules 2022; 12:biom12121858. [PMID: 36551286 PMCID: PMC9775059 DOI: 10.3390/biom12121858] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/25/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022] Open
Abstract
Acne vulgaris has a pathogenesis that involves increased sebum production and perifollicular inflammation. Sterol regulatory element-binding protein-1 (SREBP-1) and peroxisome proliferator activated receptor-γ (PPAR-γ) are transcription factors that regulate numerous genes involved in lipid biosynthesis. To improve a new therapeutic approach, we designed the SREBP/PPAR decoy oligodeoxynucleotide (ODN), a synthetic short DNA containing complementary sequences for the SREBP and PPAR transcription factors. We aim to investigate the beneficial functions and the molecular mechanisms of the synthetic SREBP/PPAR decoy ODN in lipogenic models. C. acnes was intradermally injected with a 1.0 × 107 colony forming unit/20 μL. The synthetic SREBP/PPAR decoy ODN or scrambled decoy ODN (10 μg) was transferred via the mouse tail vein injection. SZ95 cells were transfected with 2 μg of synthetic ODNs. After transfection, the SZ95 cells were cultured in serum-free medium containing 20 ng/μL of insulin-like growth factor-1 (IGF)-1 for 24 h. To investigate the expression of gene and signaling pathways, we performed Western blotting. The distribution of the chimeric decoy ODN was confirmed by EMSA. Lipid levels were assessed by Nile red and Oil Red O staining. The cytokine levels were measured by ELISA kit. This study showed that C. acnes-injected mice and IGF-1-stimulated SZ95 cells exhibited increased expression of SREBP-1 and PPAR-γ compared to the normal controls. In contrast, the administration of the SREBP/PPAR chimeric decoy ODN significantly suppressed the upregulation of lipogenic genes. Furthermore, the SREBP/PPAR decoy ODN decreased the plasma cytokines and cytokine levels of total protein. These results suggested that the SREBP/PPAR decoy ODN exerts its anti-lipogenic effects by regulating lipid metabolism and by inhibiting lipogenesis through the inactivation of the SREBP and PPAR pathways. Therefore, the synthetic SREBP/PPAR ODN demonstrates substantial therapeutic feasibility for the treatment of acne vulgaris.
Collapse
|
11
|
Efficacy and Safety of Oral Green Tea Preparations in Skin Ailments: A Systematic Review of Clinical Studies. Nutrients 2022; 14:nu14153149. [PMID: 35956325 PMCID: PMC9370301 DOI: 10.3390/nu14153149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 07/27/2022] [Accepted: 07/28/2022] [Indexed: 02/05/2023] Open
Abstract
Green-tea-based products and their polyphenols, especially epigallocatechin-3-gallate, have attracted great attention over the years as possible nutraceuticals, due to their promising bioactivities, especially antioxidant and anti-inflammatory, which could be exploited in several diseases, including skin ailments. In this context, the present study aimed at reviewing clinical evidence about the benefits of the oral administration of green tea preparations and its polyphenols to relieve skin disorders, to point out the current knowledge, and to suggest possible novel strategies to effectively exploit the properties of green tea, also managing safety risks. To this end, a systematic review of the existing literature was carried out, using the PRISMA method. Few studies, including five focused on UV-induced erythema and skin alterations, three on photoaging, two on antioxidant skin defenses, and one on acne and genodermatosis, were retrieved. Despite several benefits, clinical evidence only supports the use of oral green tea preparations to protect skin from damage induced by ultraviolet radiation; in other cases, conflicting results and methodological limits of clinical trials do not allow one to clarify their efficacy. Therefore, their application as adjuvant or alternative sunscreen-protective interventions could be encouraged, in compliance with the safety recommendations.
Collapse
|
12
|
Erdem C, Mutsuddy A, Bensman EM, Dodd WB, Saint-Antoine MM, Bouhaddou M, Blake RC, Gross SM, Heiser LM, Feltus FA, Birtwistle MR. A scalable, open-source implementation of a large-scale mechanistic model for single cell proliferation and death signaling. Nat Commun 2022; 13:3555. [PMID: 35729113 PMCID: PMC9213456 DOI: 10.1038/s41467-022-31138-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 06/07/2022] [Indexed: 02/01/2023] Open
Abstract
Mechanistic models of how single cells respond to different perturbations can help integrate disparate big data sets or predict response to varied drug combinations. However, the construction and simulation of such models have proved challenging. Here, we developed a python-based model creation and simulation pipeline that converts a few structured text files into an SBML standard and is high-performance- and cloud-computing ready. We applied this pipeline to our large-scale, mechanistic pan-cancer signaling model (named SPARCED) and demonstrate it by adding an IFNγ pathway submodel. We then investigated whether a putative crosstalk mechanism could be consistent with experimental observations from the LINCS MCF10A Data Cube that IFNγ acts as an anti-proliferative factor. The analyses suggested this observation can be explained by IFNγ-induced SOCS1 sequestering activated EGF receptors. This work forms a foundational recipe for increased mechanistic model-based data integration on a single-cell level, an important building block for clinically-predictive mechanistic models.
Collapse
Affiliation(s)
- Cemal Erdem
- Department of Chemical & Biomolecular Engineering, Clemson University, Clemson, SC, USA.
| | - Arnab Mutsuddy
- Department of Chemical & Biomolecular Engineering, Clemson University, Clemson, SC, USA
| | - Ethan M Bensman
- Computer Science, School of Computing, Clemson University, Clemson, SC, USA
| | - William B Dodd
- Department of Chemical & Biomolecular Engineering, Clemson University, Clemson, SC, USA
| | - Michael M Saint-Antoine
- Center for Bioinformatics and Computational Biology, University of Delaware, Newark, DE, USA
| | - Mehdi Bouhaddou
- Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, CA, USA
| | - Robert C Blake
- Center for Applied Scientific Computing, Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Sean M Gross
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, USA
| | - Laura M Heiser
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, USA
| | - F Alex Feltus
- Department of Genetics and Biochemistry, Clemson University, Clemson, SC, USA
- Biomedical Data Science and Informatics Program, Clemson University, Clemson, SC, USA
- Center for Human Genetics, Clemson University, Clemson, SC, USA
| | - Marc R Birtwistle
- Department of Chemical & Biomolecular Engineering, Clemson University, Clemson, SC, USA.
- Department of Bioengineering, Clemson University, Clemson, SC, USA.
| |
Collapse
|
13
|
Obukhova L, Nikiforova O, Kontorshchikova C, Medyanik I, Orlinskaya N, Grishin A, Kontorshchikov M, Shchelchkova N. Carbohydrate Metabolism Parameters of Adult Glial Neoplasms According to Immunohistochemical Profile. Biomedicines 2022; 10:biomedicines10051007. [PMID: 35625744 PMCID: PMC9138280 DOI: 10.3390/biomedicines10051007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/22/2022] [Accepted: 04/25/2022] [Indexed: 11/16/2022] Open
Abstract
This research aimed to investigate the interrelationship of carbohydrate metabolism parameters and immunohistochemical characteristics of glial tumors. Tumor tissue, peritumoral area, and adjacent noncancerous tissue fragments of 20 patients with gliomas of varying degrees of anaplasia were analyzed. The greatest differences in the carbohydrate metabolism compared to adjacent noncancerous tissues were identified in the tumor tissue: reduction in the levels of lactate and glycogen synthase kinase-3β. Significant differences with adjacent noncancerous tissues for the peritumoral zone were not found. The activity of the carbohydrate metabolism enzymes was different depending on the immunohistochemical glioma profile, especially from Ki 67 level. Bioinformatic analysis of the interactions of immunohistochemical markers of gliomas and carbohydrate metabolism enzymes using the databases of STRING, BioGrid, and Signor revealed the presence of biologically significant interactions with glycogen synthase kinase 3β, hexokinase, glucose-6-phosphate dehydrogenase, and transketolase. The established interconnection of glycolysis with methylation of the promoter of O-6-methylguanine-DNA-methyltransferase (MGMT) of gliomas can be used to increase chemotherapy efficiency.
Collapse
|
14
|
Simões LMFR, Tavares NAR, Ferreira-Pêgo C. Plant-Based Diet and IGF-1 Modulation on HER2-Positive Breast Cancer: A Lifestyle Medicine Nutrition Approach in Oncology. Am J Lifestyle Med 2022; 16:36-45. [PMID: 35185425 PMCID: PMC8848116 DOI: 10.1177/15598276211023048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/29/2023] Open
Abstract
Breast cancer is the second most common type of cancer in women worldwide, where nutritional intervention should be part of a multidisciplinary lifestyle approach in oncology, promoting therapeutic success. Insulin-like growth factor 1 (IGF-1), along with estrogen, can promote the development of neoplastic cells in breast tissue. Cancers that develop under IGF-1 stimulation are often resistant to therapy. This case report describes a 47-year-old woman, body mass index 27.4 kg/m2, with HER2-positive breast cancer, as well as elevated blood glucose, total cholesterol, and low-density lipoprotein cholesterol. Soon after her breast cancer diagnosis, she transitioned from a Western pattern diet (WPD) to a predominantly whole-food, plant-based diet (PWFPBD) for 1035 days, followed by 232 days of PWFPBD plus night fasting for 16 hours per day. IGF-1 decreased 22.38%, glycemia and total cholesterol decreased by -55.06% and -36.00% at the end of the first intervention and went up by 6.25%, and 3.87%, respectively, at the end of the second intervention. A PWFPBD, with or without 16-hour overnight fasting, seems to modulate plasma levels of IGF-1 on a 47-year-old woman diagnosed with breast cancer, type HER2-positive. Future research, should explore the physiologic and pathophysiological mechanisms and clarify whether this dietary strategy, may be clinically useful in preventing HER2-positive breast cancer.
Collapse
Affiliation(s)
- Laurinda M. F. R. Simões
- School of Sciences and Health Technologies, Universidade Lusófona de Humanidades e Tecnologias, Lisbon, Portugal
| | - Nelson A. R. Tavares
- CBIOS-University Lusófona’s Research Center for Biosciences and Health Technologies, Lisbon, Portugal
| | - Cíntia Ferreira-Pêgo
- CBIOS-University Lusófona’s Research Center for Biosciences and Health Technologies, Lisbon, Portugal
| |
Collapse
|
15
|
Wang D, Ye J, Shi R, Zhao B, Liu Z, Lin W, Liu X. Dietary protein and amino acid restriction: Roles in metabolic health and aging-related diseases. Free Radic Biol Med 2022; 178:226-242. [PMID: 34890767 DOI: 10.1016/j.freeradbiomed.2021.12.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 12/03/2021] [Accepted: 12/04/2021] [Indexed: 12/13/2022]
Abstract
The prevalence of obesity is a worldwide phenomenon in all age groups and is associated with aging-related diseases such as type 2 diabetes, as well metabolic and cardiovascular diseases. The use of dietary restriction (DR) while avoiding malnutrition has many profound beneficial effects on aging and metabolic health, and dietary protein or specific amino acid (AA) restrictions, rather than overall calorie intake, are considered to play key roles in the effects of DR on host health. Whereas comprehensive reviews of the underlying mechanisms are limited, protein restriction and methionine (Met) restriction improve metabolic health and aging-related neurodegenerative diseases, and may be associated with FGF21, mTOR and autophagy, improved mitochondrial function and oxidative stress. Circulating branched-chain amino acids (BCAAs) are inversely correlated with metabolic health, and BCAAs and leucine (Leu) restriction promote metabolic homeostasis in rodents. Although tryptophan (Trp) restriction extends the lifespan of rodents, the Trp-restricted diet is reported to increase inflammation in aged mice, while severe Trp restriction has side effects such as anorexia. Furthermore, inadequate protein intake in the elderly increases the risk of muscle-centric health. Therefore, the restriction of specific AAs may be an effective and executable dietary manipulation for metabolic and aging-related health in humans, which warrants further investigation to elucidate the underlying mechanisms.
Collapse
Affiliation(s)
- Danna Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Jin Ye
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Renjie Shi
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Beita Zhao
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Zhigang Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Wei Lin
- Department of Neurosurgery, Xijing Institute of Clinical Neuroscience, Xijing Hospital, Air Force Medical University, Xi'an, Shanxi, China.
| | - Xuebo Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.
| |
Collapse
|
16
|
Szabo Z, Koczka V, Marosvolgyi T, Szabo E, Frank E, Polyak E, Fekete K, Erdelyi A, Verzar Z, Figler M. Possible Biochemical Processes Underlying the Positive Health Effects of Plant-Based Diets-A Narrative Review. Nutrients 2021; 13:2593. [PMID: 34444753 PMCID: PMC8398942 DOI: 10.3390/nu13082593] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 12/11/2022] Open
Abstract
Plant-based diets are becoming more popular for many reasons, and epidemiological as well as clinical data also suggest that a well-balanced vegan diet can be adopted for the prevention, and in some cases, in the treatment of many diseases. In this narrative review, we provide an overview of the relationships between these diets and various conditions and their potential biochemical background. As whole plant foods are very rich in food-derived antioxidants and other phytochemicals, they have many positive physiological effects on different aspects of health. In the background of the beneficial health effects, several biochemical processes could stand, including the reduced formation of trimethylamine oxide (TMAO) or decreased serum insulin-like growth factor 1 (IGF-1) levels and altered signaling pathways such as mechanistic target of rapamycin (mTOR). In addition, the composition of plant-based diets may play a role in preventing lipotoxicity, avoiding N-glycolylneuraminic acid (Neu5Gc), and reducing foodborne endotoxin intake. In this article, we attempt to draw attention to the growing knowledge about these diets and provide starting points for further research.
Collapse
Affiliation(s)
- Zoltan Szabo
- Institute of Nutritional Sciences and Dietetics, Faculty of Health Sciences, University of Pecs, 7621 Pecs, Hungary; (E.F.); (E.P.); (Z.V.); (M.F.)
| | - Viktor Koczka
- Department of Biochemistry and Medical Chemistry, Medical School, University of Pecs, 7624 Pecs, Hungary; (V.K.); (E.S.)
- Doctoral School of Health Sciences, Faculty of Health Sciences, University of Pecs, 7621 Pecs, Hungary
| | - Tamas Marosvolgyi
- Institute of Bioanalysis, Medical School, University of Pecs, 7624 Pecs, Hungary;
- Szentagothai Research Center, University of Pecs, 7624 Pecs, Hungary
| | - Eva Szabo
- Department of Biochemistry and Medical Chemistry, Medical School, University of Pecs, 7624 Pecs, Hungary; (V.K.); (E.S.)
| | - Eszter Frank
- Institute of Nutritional Sciences and Dietetics, Faculty of Health Sciences, University of Pecs, 7621 Pecs, Hungary; (E.F.); (E.P.); (Z.V.); (M.F.)
| | - Eva Polyak
- Institute of Nutritional Sciences and Dietetics, Faculty of Health Sciences, University of Pecs, 7621 Pecs, Hungary; (E.F.); (E.P.); (Z.V.); (M.F.)
| | - Kata Fekete
- Institute for Translational Medicine, Medical School, University of Pecs, 7624 Pecs, Hungary;
| | - Attila Erdelyi
- Institute of Health Insurance, Faculty of Health Sciences, University of Pecs, 7621 Pecs, Hungary;
| | - Zsofia Verzar
- Institute of Nutritional Sciences and Dietetics, Faculty of Health Sciences, University of Pecs, 7621 Pecs, Hungary; (E.F.); (E.P.); (Z.V.); (M.F.)
| | - Maria Figler
- Institute of Nutritional Sciences and Dietetics, Faculty of Health Sciences, University of Pecs, 7621 Pecs, Hungary; (E.F.); (E.P.); (Z.V.); (M.F.)
- 2nd Department of Internal Medicine and Nephrology Centre, Clinical Centre, University of Pecs, 7624 Pecs, Hungary
| |
Collapse
|
17
|
Rahman MS, Hossain KS, Das S, Kundu S, Adegoke EO, Rahman MA, Hannan MA, Uddin MJ, Pang MG. Role of Insulin in Health and Disease: An Update. Int J Mol Sci 2021; 22:6403. [PMID: 34203830 PMCID: PMC8232639 DOI: 10.3390/ijms22126403] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 02/06/2023] Open
Abstract
Insulin is a polypeptide hormone mainly secreted by β cells in the islets of Langerhans of the pancreas. The hormone potentially coordinates with glucagon to modulate blood glucose levels; insulin acts via an anabolic pathway, while glucagon performs catabolic functions. Insulin regulates glucose levels in the bloodstream and induces glucose storage in the liver, muscles, and adipose tissue, resulting in overall weight gain. The modulation of a wide range of physiological processes by insulin makes its synthesis and levels critical in the onset and progression of several chronic diseases. Although clinical and basic research has made significant progress in understanding the role of insulin in several pathophysiological processes, many aspects of these functions have yet to be elucidated. This review provides an update on insulin secretion and regulation, and its physiological roles and functions in different organs and cells, and implications to overall health. We cast light on recent advances in insulin-signaling targeted therapies, the protective effects of insulin signaling activators against disease, and recommendations and directions for future research.
Collapse
Affiliation(s)
- Md Saidur Rahman
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong 17546, Korea; (M.S.R.); (E.O.A.)
- ABEx Bio-Research Center, East Azampur, Dhaka 1230, Bangladesh; (K.S.H.); (S.D.); (S.K.); (M.A.R.); (M.A.H.); (M.J.U.)
| | - Khandkar Shaharina Hossain
- ABEx Bio-Research Center, East Azampur, Dhaka 1230, Bangladesh; (K.S.H.); (S.D.); (S.K.); (M.A.R.); (M.A.H.); (M.J.U.)
| | - Sharnali Das
- ABEx Bio-Research Center, East Azampur, Dhaka 1230, Bangladesh; (K.S.H.); (S.D.); (S.K.); (M.A.R.); (M.A.H.); (M.J.U.)
| | - Sushmita Kundu
- ABEx Bio-Research Center, East Azampur, Dhaka 1230, Bangladesh; (K.S.H.); (S.D.); (S.K.); (M.A.R.); (M.A.H.); (M.J.U.)
| | - Elikanah Olusayo Adegoke
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong 17546, Korea; (M.S.R.); (E.O.A.)
| | - Md. Ataur Rahman
- ABEx Bio-Research Center, East Azampur, Dhaka 1230, Bangladesh; (K.S.H.); (S.D.); (S.K.); (M.A.R.); (M.A.H.); (M.J.U.)
- Department of Pathology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Md. Abdul Hannan
- ABEx Bio-Research Center, East Azampur, Dhaka 1230, Bangladesh; (K.S.H.); (S.D.); (S.K.); (M.A.R.); (M.A.H.); (M.J.U.)
- Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Md Jamal Uddin
- ABEx Bio-Research Center, East Azampur, Dhaka 1230, Bangladesh; (K.S.H.); (S.D.); (S.K.); (M.A.R.); (M.A.H.); (M.J.U.)
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Woman’s University, Seoul 03760, Korea
| | - Myung-Geol Pang
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong 17546, Korea; (M.S.R.); (E.O.A.)
| |
Collapse
|
18
|
Melnik BC, Schmitz G. Pasteurized non-fermented cow's milk but not fermented milk is a promoter of mTORC1-driven aging and increased mortality. Ageing Res Rev 2021; 67:101270. [PMID: 33571703 DOI: 10.1016/j.arr.2021.101270] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/16/2021] [Accepted: 02/03/2021] [Indexed: 02/07/2023]
Abstract
Recent epidemiological studies in Sweden, a country with traditionally high milk consumption, revealed that the intake of non-fermented pasteurized milk increased all-cause mortality in a dose-dependent manner. In contrast, the majority of epidemiological and clinical studies report beneficial health effects of fermented milk products, especially of yogurt. It is the intention of this review to delineate potential molecular aging mechanisms related to the intake of non-fermented milk versus yogurt on the basis of mechanistic target of rapamycin complex 1 (mTORC1) signaling. Non-fermented pasteurized milk via its high bioavailability of insulinotropic branched-chain amino acids (BCAAs), abundance of lactose (glucosyl-galactose) and bioactive exosomal microRNAs (miRs) enhances mTORC1 signaling, which shortens lifespan and increases all-cause mortality. In contrast, fermentation-associated lactic acid bacteria metabolize BCAAs and degrade galactose and milk exosomes including their mTORC1-activating microRNAs. The Industrial Revolution, with the introduction of pasteurization and refrigeration of milk, restricted the action of beneficial milk-fermenting bacteria, which degrade milk's BCAAs, galactose and bioactive miRs that synergistically activate mTORC1. This unrecognized behavior change in humans after the Neolithic revolution increased aging-related over-activation of mTORC1 signaling in humans, who persistently consume large quantities of non-fermented pasteurized cow's milk, a potential risk factor for aging and all-cause mortality.
Collapse
|
19
|
Frączek B, Pięta A, Burda A, Mazur-Kurach P, Tyrała F. Paleolithic Diet-Effect on the Health Status and Performance of Athletes? Nutrients 2021; 13:1019. [PMID: 33801152 PMCID: PMC8004139 DOI: 10.3390/nu13031019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/16/2021] [Accepted: 03/18/2021] [Indexed: 01/18/2023] Open
Abstract
The aim of this meta-analysis was to review the impact of a Paleolithic diet (PD) on selected health indicators (body composition, lipid profile, blood pressure, and carbohydrate metabolism) in the short and long term of nutrition intervention in healthy and unhealthy adults. A systematic review of randomized controlled trials of 21 full-text original human studies was conducted. Both the PD and a variety of healthy diets (control diets (CDs)) caused reduction in anthropometric parameters, both in the short and long term. For many indicators, such as weight (body mass (BM)), body mass index (BMI), and waist circumference (WC), impact was stronger and especially found in the short term. All diets caused a decrease in total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and triglycerides (TG), albeit the impact of PD was stronger. Among long-term studies, only PD cased a decline in TC and LDL-C. Impact on blood pressure was observed mainly in the short term. PD caused a decrease in fasting plasma (fP) glucose, fP insulin, and homeostasis model assessment of insulin resistance (HOMA-IR) and glycated hemoglobin (HbA1c) in the short run, contrary to CD. In the long term, only PD caused a decrease in fP glucose and fP insulin. Lower positive impact of PD on performance was observed in the group without exercise. Positive effects of the PD on health and the lack of experiments among professional athletes require longer-term interventions to determine the effect of the Paleo diet on athletic performance.
Collapse
Affiliation(s)
- Barbara Frączek
- Department of Sports Medicine and Human Nutrition, Institute of Biomedical Sciences, University School of Physical Education in Krakow, Jana Pawla II 78, 31-571 Cracow, Poland; (A.P.); (P.M.-K.)
| | - Aleksandra Pięta
- Department of Sports Medicine and Human Nutrition, Institute of Biomedical Sciences, University School of Physical Education in Krakow, Jana Pawla II 78, 31-571 Cracow, Poland; (A.P.); (P.M.-K.)
| | - Adrian Burda
- Department of Econometrics and Operational Research, Cracow University of Economics, 31-510 Cracow, Poland;
| | - Paulina Mazur-Kurach
- Department of Sports Medicine and Human Nutrition, Institute of Biomedical Sciences, University School of Physical Education in Krakow, Jana Pawla II 78, 31-571 Cracow, Poland; (A.P.); (P.M.-K.)
| | - Florentyna Tyrała
- Department of Sports Dietetics, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland;
| |
Collapse
|
20
|
Melnik BC. Lifetime Impact of Cow's Milk on Overactivation of mTORC1: From Fetal to Childhood Overgrowth, Acne, Diabetes, Cancers, and Neurodegeneration. Biomolecules 2021; 11:404. [PMID: 33803410 PMCID: PMC8000710 DOI: 10.3390/biom11030404] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/04/2021] [Accepted: 03/04/2021] [Indexed: 02/07/2023] Open
Abstract
The consumption of cow's milk is a part of the basic nutritional habits of Western industrialized countries. Recent epidemiological studies associate the intake of cow's milk with an increased risk of diseases, which are associated with overactivated mechanistic target of rapamycin complex 1 (mTORC1) signaling. This review presents current epidemiological and translational evidence linking milk consumption to the regulation of mTORC1, the master-switch for eukaryotic cell growth. Epidemiological studies confirm a correlation between cow's milk consumption and birthweight, body mass index, onset of menarche, linear growth during childhood, acne vulgaris, type 2 diabetes mellitus, prostate cancer, breast cancer, hepatocellular carcinoma, diffuse large B-cell lymphoma, neurodegenerative diseases, and all-cause mortality. Thus, long-term persistent consumption of cow's milk increases the risk of mTORC1-driven diseases of civilization. Milk is a highly conserved, lactation genome-controlled signaling system that functions as a maternal-neonatal relay for optimized species-specific activation of mTORC1, the nexus for regulation of eukaryotic cell growth, and control of autophagy. A deeper understanding of milk´s impact on mTORC1 signaling is of critical importance for the prevention of common diseases of civilization.
Collapse
Affiliation(s)
- Bodo C Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, Am Finkenhügel 7a, D-49076 Osnabrück, Germany
| |
Collapse
|
21
|
Adamski Z, Gornowicz-Porowska J, Sobkowska D, Kaszuba K, Czajkowski R. Acne - therapeutic challenges to the cooperation between a dermatologist and a cosmetologist. Postepy Dermatol Alergol 2021; 38:21-31. [PMID: 34408562 PMCID: PMC8362767 DOI: 10.5114/ada.2021.104273] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 07/21/2020] [Indexed: 12/12/2022] Open
Abstract
Acne vulgaris is one of the most common skin diseases in adolescence, causing a significant negative impact on the quality of life of young people who - in a large percentage of cases - do not accept their appearance. The complex pathogenesis of this disease requires appropriate preventive and curative treatment from both a dermatologist and a cosmetologist. The aim of the study was to discuss the methods currently used by dermatologists in local therapy for mild and intermediate forms of acne vulgaris, and to provide an overview of possible preventive and caring activities in the cosmetologist's office. Possible directions of cooperation between the dermatologist and the cosmetologist in the prevention of acne relapse and treatment of possible acne complications were also discussed.
Collapse
Affiliation(s)
- Zygmunt Adamski
- Chair and Clinic of Dermatology, Poznan University of Medical Sciences, Poznan, Poland
| | - Justyna Gornowicz-Porowska
- Clinic of Natural Medicinal and Cosmetic Raw Materials, The Laboratory of Practical Cosmetology, Poznan University of Medical Sciences, Poznan, Poland
| | - Daria Sobkowska
- Clinic of Natural Medicinal and Cosmetic Raw Materials, The Laboratory of Practical Cosmetology, Poznan University of Medical Sciences, Poznan, Poland
| | | | - Rafał Czajkowski
- Chair of Dermatology, Department of Dermatology and Venerology, Faculty of Medicine, Ludwik Rydygier Medical College in Bydgoszcz, Nicolaus Copernicus University in Torun, Poland
| |
Collapse
|
22
|
Narayanankutty A, Kuzhivelil BT, Raghavamenon AC. A High-Fructose Diet Formulated with Thermally Oxidized Monounsaturated Fat Aggravates Metabolic Dysregulation in Colon Epithelial Tissues of Rats. J Am Coll Nutr 2020; 41:38-49. [DOI: 10.1080/07315724.2020.1846145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Arunaksharan Narayanankutty
- Department of Biochemistry, Amala Cancer Research Centre (Recognized Centre of University of Calicut), Thrissur, Kerala, India
| | - Balu T. Kuzhivelil
- Department of Zoology, Applied Biochemistry and Biotechnology Laboratory, Christ College, University of Calicut, Irinjalakuda, Kerala, India
| | - Achuthan C. Raghavamenon
- Department of Biochemistry, Amala Cancer Research Centre (Recognized Centre of University of Calicut), Thrissur, Kerala, India
| |
Collapse
|
23
|
Aktaş Karabay E, Saltık ZA, Unay Demirel Ö. Evaluation of serum
FoxO1
,
mTORC1
,
IGF
‐1,
IGFBP
‐3 levels, and metabolic syndrome components in patients with acne vulgaris: A prospective case‐control study. Dermatol Ther 2020; 33:e13887. [DOI: 10.1111/dth.13887] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/10/2020] [Accepted: 06/18/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Ezgi Aktaş Karabay
- Faculty of Medicine, Department of Dermatology and Venereology Bahçeşehir University Istanbul Turkey
| | | | - Özlem Unay Demirel
- Faculty of Medicine, Department of Clinical Biochemistry Bahçeşehir University Istanbul Turkey
| |
Collapse
|
24
|
Zhang J, Deng Y, Khoo BL. Fasting to enhance Cancer treatment in models: the next steps. J Biomed Sci 2020; 27:58. [PMID: 32370764 PMCID: PMC7201989 DOI: 10.1186/s12929-020-00651-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 04/22/2020] [Indexed: 02/06/2023] Open
Abstract
Short-term fasting (STF) is a technique to reduce nutrient intake for a specific period. Since metabolism plays a pivotal role in tumor progression, it can be hypothesized that STF can improve the efficacy of chemotherapy. Recent studies have demonstrated the efficacy of STF in cell and animal tumor models. However, large-scale clinical trials must be conducted to verify the safety and effectiveness of these diets. In this review, we re-examine the concept of how metabolism affects pathophysiological pathways. Next, we provided a comprehensive discussion of the specific mechanisms of STF on tumor progression, derived through studies carried out with tumor models. There are currently at least four active clinical trials on fasting and cancer treatment. Based on these studies, we highlight the potential caveats of fasting in clinical applications, including the onset of metabolic syndrome and other metabolic complications during chemotherapy, with a particular focus on the regulation of the epithelial to mesenchymal pathway and cancer heterogeneity. We further discuss the advantages and disadvantages of the current state-of-art tumor models for assessing the impact of STF on cancer treatment. Finally, we explored upcoming fasting strategies that could complement existing chemotherapy and immunotherapy strategies to enable personalized medicine. Overall, these studies have the potential for breakthroughs in cancer management.
Collapse
Affiliation(s)
- Jing Zhang
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong
| | - Yanlin Deng
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong
| | - Bee Luan Khoo
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong.
| |
Collapse
|
25
|
Kim MH, Ha IJ, Kim E, Kim K. Integrated targeted serum metabolomic profile and its association with gender, age, disease severity, and pattern identification in acne. PLoS One 2020; 15:e0228074. [PMID: 31951642 PMCID: PMC6968861 DOI: 10.1371/journal.pone.0228074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 01/07/2020] [Indexed: 11/24/2022] Open
Abstract
Background Westernized diet and nutritional metabolism are important in acne pathogenesis, especially in adult patients. However, clinical and basic data are lacking. Pattern identification (PI) is a tool that results in a diagnostic conclusion based on a cluster of concurrent symptoms and signs in traditional medicine. Acne can be classified by PI. However, whether the metabolomic profile differs according to the PI of acne is unknown. Metabolomic data would help clarify the pathogenesis of acne. Methods We conducted a cross-sectional study involving 40 healthy controls and 60 subjects with acne. We evaluated androgens, serum lipids, essential amino acids, nonessential amino acids, other amino acids, and pro-inflammatory cytokines of all subjects and compared the metabolomic profiles between acne subjects and healthy controls, and in subgroups according to gender, age, severity, and PI. Results Dehydroepiandrosterone sulfate and serum fatty acids were significantly higher in female subjects, adolescents, and those with disharmony of the thoroughfare and conception vessels. The total essential and nonessential amino acids were significantly lower in the overall, female, adult, severe, and phlegm-stasis group. The latter group exhibited elevated serum levels of interleukin-1β and -6. Conclusions This is the first study to investigate serum lipids, amino acids, and cytokines in subjects with acne. We analyzed the differences between metabolomic profiles to determine the diagnostic value of PI. Prospective studies with more patients are needed to confirm the characteristics of each PI and lipidomic data will enrich knowledge concerning lipid mechanism.
Collapse
Affiliation(s)
- Min Hee Kim
- Department of Ophthalmology & Otolaryngology & Dermatology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - In Jin Ha
- Korean Medicine Clinical Trial Center, Kyung Hee University Korean Medicine Hospital, Seoul, Republic of Korea
| | - Eunok Kim
- Korean Medicine Clinical Trial Center, Kyung Hee University Korean Medicine Hospital, Seoul, Republic of Korea
- College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Kyuseok Kim
- Department of Ophthalmology & Otolaryngology & Dermatology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
- Korean Medicine Clinical Trial Center, Kyung Hee University Korean Medicine Hospital, Seoul, Republic of Korea
- * E-mail:
| |
Collapse
|
26
|
Rankovic A, Adolphe JL, Verbrugghe A. Role of carbohydrates in the health of dogs. J Am Vet Med Assoc 2019; 255:546-554. [PMID: 31429654 DOI: 10.2460/javma.255.5.546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
27
|
Osher E, Macaulay VM. Therapeutic Targeting of the IGF Axis. Cells 2019; 8:E895. [PMID: 31416218 PMCID: PMC6721736 DOI: 10.3390/cells8080895] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/04/2019] [Accepted: 08/09/2019] [Indexed: 12/17/2022] Open
Abstract
The insulin like growth factor (IGF) axis plays a fundamental role in normal growth and development, and when deregulated makes an important contribution to disease. Here, we review the functions mediated by ligand-induced IGF axis activation, and discuss the evidence for the involvement of IGF signaling in the pathogenesis of cancer, endocrine disorders including acromegaly, diabetes and thyroid eye disease, skin diseases such as acne and psoriasis, and the frailty that accompanies aging. We discuss the use of IGF axis inhibitors, focusing on the different approaches that have been taken to develop effective and tolerable ways to block this important signaling pathway. We outline the advantages and disadvantages of each approach, and discuss progress in evaluating these agents, including factors that contributed to the failure of many of these novel therapeutics in early phase cancer trials. Finally, we summarize grounds for cautious optimism for ongoing and future studies of IGF blockade in cancer and non-malignant disorders including thyroid eye disease and aging.
Collapse
Affiliation(s)
- Eliot Osher
- Department of Oncology, University of Oxford, Oxford, OX3 7DQ, UK
| | | |
Collapse
|
28
|
Noakes TD. So What Comes First: The Obesity or the Insulin Resistance? And Which Is More Important? Clin Chem 2019; 64:7-9. [PMID: 29295832 DOI: 10.1373/clinchem.2017.282962] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 11/02/2017] [Indexed: 02/06/2023]
Affiliation(s)
- Timothy David Noakes
- Department of Human Biology, University of Cape Town, Sports Science Institute of South Africa, South Africa.
| |
Collapse
|
29
|
Abstract
Non-communicable diseases, such as cardiovascular diseases, are the leading cause of mortality worldwide. For this reason, a tremendous effort is being made worldwide to effectively circumvent these afflictions, where insulin-like growth factor 1 (IGF1) is being proposed both as a marker and as a central cornerstone in these diseases, making it an interesting molecule to focus on. Firstly, at the initiation of metabolic deregulation by overfeeding, IGF1 is decreased/inhibited. Secondly, such deficiency seems to be intimately related to the onset of MetS and establishment of vascular derangements leading to atherosclerosis and finally playing a definitive part in cerebrovascular and myocardial accidents, where IGF1 deficiency seems to render these organs vulnerable to oxidative and apoptotic/necrotic damage. Several human cohort correlations together with basic/translational experimental data seem to confirm deep IGF1 implication, albeit with controversy, which might, in part, be given by experimental design leading to blurred result interpretation.
Collapse
|
30
|
Cong TX, Hao D, Wen X, Li XH, He G, Jiang X. From pathogenesis of acne vulgaris to anti-acne agents. Arch Dermatol Res 2019; 311:337-349. [PMID: 30859308 DOI: 10.1007/s00403-019-01908-x] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 03/03/2019] [Accepted: 03/05/2019] [Indexed: 02/05/2023]
Abstract
Acne vulgaris is a cutaneous chronic inflammatory disorder with complex pathogenesis. Four factors play vital roles in acne pathophysiology: hyperseborrhea and dysseborrhea, altered keratinization of the pilosebaceous duct, Cutibacterium acnes (C. acnes) and inflammation. The main hormones responsible for the development of acne vulgaris include androgens, insulin and insulin-like growth factor-1. Other factors involved in this process are corticotropin-releasing hormone, α-melanocyte-stimulating hormone and substance P. Wnt/β-catenin signaling pathway, phosphoinositide 3-kinase (PI3K)/Akt pathway, mitogen-activated protein kinase pathway, adenosine 5'-monophosphate-activated protein kinase pathway and nuclear factor kappa B pathway participate in the modulation of sebocyte, keratinocyte and inflammatory cell (e.g. lymphocytes, monocytes, macrophages, neutrophils) activity. Among all the triggers and pathways mentioned above, IGF-1-induced PI3K/Akt/Forkhead box protein O1/mammalian target of rapamycin (mTOR) C1 pathway is the most important signaling responsible for acne pathogenesis. Commonly used anti-acne agents include retinoids, benzoyl peroxide, antibiotics and hormonal agents (e.g. spironolactone, combination oral contraceptive and flutamide). New approaches including peroxisome proliferator-activated receptor γ modifier, melanocortin receptor antagonists, epigallocatechin-3-gallate, metformin, olumacostat glasaretil, stearoyl-CoA desaturase inhibitor omiganan pentahydrochloride, KDPT, afamelanotide, apremilast and biologics have been developed as promising treatments for acne vulgaris. Although these anti-acne agents have various pharmacological effects against the diverse pathogenesis of acne, all of them have a synergistic mode of action, the attenuation of Akt/mTORC1 signaling and enhancement of p53 signal transduction. In addition to drug therapy, diet with no hyperglycemic carbohydrates, no milk and dairy products is also beneficial for treatment of acne.
Collapse
Affiliation(s)
- Tian-Xin Cong
- Department of Dermatology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, People's Republic of China
| | - Dan Hao
- Department of Dermatology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, People's Republic of China
| | - Xiang Wen
- Department of Dermatology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, People's Republic of China
| | - Xiao-Hua Li
- Department of Dermatology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, People's Republic of China
| | - Gu He
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, People's Republic of China
| | - Xian Jiang
- Department of Dermatology, West China Hospital, Sichuan University, 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, People's Republic of China.
| |
Collapse
|
31
|
Clatici VG, Voicu C, Voaides C, Roseanu A, Icriverzi M, Jurcoane S. Diseases of Civilization - Cancer, Diabetes, Obesity and Acne - the Implication of Milk, IGF-1 and mTORC1. MAEDICA 2018; 13:273-281. [PMID: 30774725 PMCID: PMC6362881 DOI: 10.26574/maedica.2018.13.4.273] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Nutrition and food are one of the most complex aspects of human lives, being influenced by biochemical, psychological, social and cultural factors. The Western diet is the prototype of modern dietary pattern and is mainly characterized by the intake of large amounts of red meat, dairy products, refined grains and sugar. Large amounts of scientific evidence positively correlate Western diet to acne, obesity, diabetes, heart disease and cancer, the so-called "diseases of civilization". The pathophysiological common ground of all these pathologies is the IGF-1 and mTORC pathways, which will be disscussed further in this paper.
Collapse
Affiliation(s)
| | | | | | - Anca Roseanu
- Department of Ligand-Receptor Interaction, Institute of Biochemistry of the Romanian Academy, Bucharest, Romania
| | - Madalina Icriverzi
- Department of Ligand-Receptor Interaction, Institute of Biochemistry of the Romanian Academy, Bucharest, Romania
| | | |
Collapse
|
32
|
Ayyadevara S, Ganne A, Hendrix RD, Balasubramaniam M, Shmookler Reis RJ, Barger SW. Functional assessments through novel proteomics approaches: Application to insulin/IGF signaling in neurodegenerative disease'. J Neurosci Methods 2018; 319:40-46. [PMID: 30412730 DOI: 10.1016/j.jneumeth.2018.11.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 11/04/2018] [Accepted: 11/05/2018] [Indexed: 11/26/2022]
Abstract
BACKGROUND Events that instigate disease may involve biochemical events distinct from changes in the steady-state levels of proteins. Even chronic degenerative disorders appear to involve changes such as post-translational modifications. NEW METHOD We have begun a series of proteomics analyses on proteins that have been fractionated by functional status. Because Alzheimer's disease (AD) is associated with metabolic perturbations such as Type-2 diabetes, fractionation hinged on binding to phosphatidylinositol trisphosphate (PIP3), key to insulin/insulin-like growth factor signaling. We compared mice on normal chow to counterparts subjected to diet-induced obesity (DIO) or to mice expressing human Aβ1-42 from a transgene. RESULTS The prevailing phenotypic finding in either experimental group was loss of PIP3 binding. Of the 1228 proteins that showed valid PIP3 binding in any group of mice, 55% exhibited a significant quantitative difference in the number of spectral counts as a function of DIO, 63% as function of the Aβ transgene, and 79% as a function of either variable. There was remarkable overlap among the proteins altered in the two experimental groups, and pathway analysis indicated effects on proteostasis, apoptosis, and synaptic vesicles. COMPARISON WITH EXISTING METHODS Most proteomics approaches only identify differences in the steady-state levels of proteins. Our overlay of a functional distinction permits new levels of discovery that may achieve novel insights into physiology in an unbiased and inclusive manner. CONCLUSIONS Proteomics analyses have revolutionized the discovery phase of biomedical research but are conventionally limited in scope. The creative use of fractionation prior to proteomic discovery is likely to provide important insights into AD and related disorders.
Collapse
Affiliation(s)
- Srinivas Ayyadevara
- Central Arkansas Veterans Healthcare System, Little Rock, AR, 72205, United States; Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States.
| | - Akshatha Ganne
- Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States; BioInformatics Program, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Rachel D Hendrix
- Department of Neurobiology & Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, United States
| | | | - Robert J Shmookler Reis
- Central Arkansas Veterans Healthcare System, Little Rock, AR, 72205, United States; Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States; BioInformatics Program, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States; Department of Biochemistry & Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, United States
| | - Steven W Barger
- Central Arkansas Veterans Healthcare System, Little Rock, AR, 72205, United States; Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States; Department of Neurobiology & Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, United States.
| |
Collapse
|
33
|
Claudel JP, Auffret N, Leccia MT, Poli F, Dréno B. Acne and nutrition: hypotheses, myths and facts. J Eur Acad Dermatol Venereol 2018; 32:1631-1637. [PMID: 29633388 DOI: 10.1111/jdv.14998] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 03/15/2018] [Indexed: 12/28/2022]
Abstract
Acne is an inflammatory and multifactorial skin disease. Different external and internal factors, including air pollution, aggressive skincare products, medication, mechanical, hormonal and familial factors and, more recently, lifestyle and stress, have been suggested as having an impact on acne. Moreover, for many years nutrition was believed to cause or worsen acne. Over the last decades, however, it has become a dermatological doctrine that there is no direct association between diet and acne. Even if recent research has allowed to identify certain nutritional elements and behaviour that may impact on acne, including the excessive intake of dairy products and hyperglycaemic food, modern lifestyle nutrition, obesity and eating disorders, knowledge about the role of nutrition in the physiopathology of acne still remains sparse and hypotheses and myths continue to dominate the debate. Thus, further clinical and translational research is necessary to investigate and confirm the association between nutrition and acne.
Collapse
Affiliation(s)
| | | | - M T Leccia
- Department of Dermatology, Allergology and Photobiology, CHU A Michallon, Grenoble, France
| | - F Poli
- Private Practice, Paris, France
| | - B Dréno
- Department of Dermatology, CIC 1413, CRCINA Inserm 1232, Nantes University Hospital, Nantes, France
| |
Collapse
|
34
|
|
35
|
Aryaeian N, Sedehi SK, Arablou T. Polyphenols and their effects on diabetes management: A review. Med J Islam Repub Iran 2017; 31:134. [PMID: 29951434 PMCID: PMC6014790 DOI: 10.14196/mjiri.31.134] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Indexed: 12/15/2022] Open
Abstract
Background: Type 2 diabetes is a growing public health problem and is associated with increased morbidity and mortality. The worldwide prevalence of type 2 diabetes is rising. Polyphenols, such as flavonoids, phenolic acid, and stilbens, are a large and heterogeneous group of phytochemicals in plant-based foods. In this review, we aimed at assessing the studies on polyphenols and diabetes management. Methods: A literature search in the PubMed, EMBASE, Scopus, and ISI Web of Science databases was conducted to identify relevant studies published from 1986 to Jan 2017. Results: Several animal models and a limited number of human studies have revealed that polyphenols decrease hyperglycemia and improve acute insulin secretion and insulin sensitivity. The possible mechanisms include decrease in glucose absorption in the intestine, inhibition of carbohydrates digestion, stimulation of insulin secretion, modulation of glucose release from the liver, activation of insulin receptors and glucose uptake in insulin-sensitive tissues, modulation of intracellular signaling pathways, and gene expression. Conclusion: Growing evidence indicates that various dietary polyphenols may influence blood glucose at different levels and may also help control and prevent diabetes complication. However, we still need more clinical trials to determine the effects of polyphenols- rich foods, their effective dose, and mechanisms of their effects in managing diabetes.
Collapse
Affiliation(s)
- Naheed Aryaeian
- Research Center for Environmental Health Technology, Iran University of Medical Sciences and Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Sara Khorshidi Sedehi
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Tahereh Arablou
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
36
|
Flachsbart F, Dose J, Gentschew L, Geismann C, Caliebe A, Knecht C, Nygaard M, Badarinarayan N, ElSharawy A, May S, Luzius A, Torres GG, Jentzsch M, Forster M, Häsler R, Pallauf K, Lieb W, Derbois C, Galan P, Drichel D, Arlt A, Till A, Krause-Kyora B, Rimbach G, Blanché H, Deleuze JF, Christiansen L, Christensen K, Nothnagel M, Rosenstiel P, Schreiber S, Franke A, Sebens S, Nebel A. Identification and characterization of two functional variants in the human longevity gene FOXO3. Nat Commun 2017; 8:2063. [PMID: 29234056 PMCID: PMC5727304 DOI: 10.1038/s41467-017-02183-y] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 11/10/2017] [Indexed: 12/15/2022] Open
Abstract
FOXO3 is consistently annotated as a human longevity gene. However, functional variants and underlying mechanisms for the association remain unknown. Here, we perform resequencing of the FOXO3 locus and single-nucleotide variant (SNV) genotyping in three European populations. We find two FOXO3 SNVs, rs12206094 and rs4946935, to be most significantly associated with longevity and further characterize them functionally. We experimentally validate the in silico predicted allele-dependent binding of transcription factors (CTCF, SRF) to the SNVs. Specifically, in luciferase reporter assays, the longevity alleles of both variants show considerable enhancer activities that are reversed by IGF-1 treatment. An eQTL database search reveals that the alleles are also associated with higher FOXO3 mRNA expression in various human tissues, which is in line with observations in long-lived model organisms. In summary, we present experimental evidence for a functional link between common intronic variants in FOXO3 and human longevity. FOXO3 is one of the few established longevity genes. Here, the authors fine-map the FOXO3-longevity association to two intronic SNPs and, using luciferase assays and EMSAs, show that these SNPs affect binding of transcription factors CTCF and SRF and associate with FOXO3 expression.
Collapse
Affiliation(s)
- Friederike Flachsbart
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
| | - Janina Dose
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
| | - Liljana Gentschew
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
| | - Claudia Geismann
- Department of Internal Medicine I, University Hospital Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, 24105, Kiel, Germany
| | - Amke Caliebe
- Institute of Medical Informatics and Statistics, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Brunswiker Straße 10, 24105, Kiel, Germany
| | - Carolin Knecht
- Institute of Medical Informatics and Statistics, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Brunswiker Straße 10, 24105, Kiel, Germany
| | - Marianne Nygaard
- The Danish Aging Research Center, and the Danish Twin Registry, Epidemiology, Biostatistics and Biodemography, Department of Public Health, University of Southern Denmark, J. B. Winslows Vej 9B, 5000, Odense C, Denmark
| | - Nandini Badarinarayan
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
| | - Abdou ElSharawy
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany.,Faculty of Sciences, Division of Biochemistry, Chemistry Department, Damietta University, 34511, New Damietta City, Egypt
| | - Sandra May
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
| | - Anne Luzius
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
| | - Guillermo G Torres
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
| | - Marlene Jentzsch
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
| | - Michael Forster
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
| | - Robert Häsler
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
| | - Kathrin Pallauf
- Institute of Human Nutrition and Food Science, Kiel University, Hermann-Rodewald-Straße 6, 24118, Kiel, Germany
| | - Wolfgang Lieb
- Institute of Epidemiology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Niemannsweg 11, 24105, Kiel, Germany
| | - Céline Derbois
- Centre National de Recherche en Génomique Humaine CNRGH-CEA, 91000, Evry, France
| | - Pilar Galan
- Université Sorbonne Paris Cité-UREN, Unité de Recherche en Epidémiologie Nutritionnelle, U557 Inserm, U1125 Inra, Cnam, Université Paris 13, CRNH IdF, 93000, Bobigny, France
| | - Dmitriy Drichel
- Department of Statistical Genetics and Bioinformatics, Cologne Center for Genomics, University of Cologne, Weyertal 115b, 50931, Cologne, Germany
| | - Alexander Arlt
- Department of Internal Medicine I, University Hospital Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, 24105, Kiel, Germany
| | - Andreas Till
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany.,Institute of Reconstructive Neurobiology and Life & Brain GmbH, University of Bonn, Sigmund-Freud-Straße 25, 53127, Bonn, Germany
| | - Ben Krause-Kyora
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany.,Max Planck Institute for the Science of Human History, Kahlaische Straße 10, 07745, Jena, Germany
| | - Gerald Rimbach
- Institute of Human Nutrition and Food Science, Kiel University, Hermann-Rodewald-Straße 6, 24118, Kiel, Germany
| | - Hélène Blanché
- Fondation Jean Dausset-Centre d'Etude du Polymorphisme Humain (CEPH), 27 Rue Juliette Dodu, 75010, Paris, France
| | - Jean-François Deleuze
- Centre National de Recherche en Génomique Humaine CNRGH-CEA, 91000, Evry, France.,Fondation Jean Dausset-Centre d'Etude du Polymorphisme Humain (CEPH), 27 Rue Juliette Dodu, 75010, Paris, France
| | - Lene Christiansen
- The Danish Aging Research Center, and the Danish Twin Registry, Epidemiology, Biostatistics and Biodemography, Department of Public Health, University of Southern Denmark, J. B. Winslows Vej 9B, 5000, Odense C, Denmark
| | - Kaare Christensen
- The Danish Aging Research Center, and the Danish Twin Registry, Epidemiology, Biostatistics and Biodemography, Department of Public Health, University of Southern Denmark, J. B. Winslows Vej 9B, 5000, Odense C, Denmark.,Department of Clinical Genetics, and Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Sdr. Boulevard 29, 5000, Odense C, Denmark
| | - Michael Nothnagel
- Department of Statistical Genetics and Bioinformatics, Cologne Center for Genomics, University of Cologne, Weyertal 115b, 50931, Cologne, Germany
| | - Philip Rosenstiel
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
| | - Stefan Schreiber
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany.,Department of Internal Medicine I, University Hospital Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, 24105, Kiel, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
| | - Susanne Sebens
- Institute for Experimental Cancer Research, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, 24105, Kiel, Germany
| | - Almut Nebel
- Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Campus Kiel, Rosalind-Franklin-Straße 12, 24105, Kiel, Germany.
| |
Collapse
|
37
|
Gollnick H, Abanmi A, Al-Enezi M, Al Hammadi A, Galadari I, Kibbi AG, Zimmo S. Managing acne in the Middle East: consensus recommendations. J Eur Acad Dermatol Venereol 2017; 31 Suppl 7:4-35. [DOI: 10.1111/jdv.14491] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- H. Gollnick
- Universitätsklinik für Dermatologie und Venerologie; Otto-von-Guericke Universität; Magdeburg Germany
| | - A.A. Abanmi
- Dr Sulaiman Al Habib Hospital; Riyadh Saudi Arabia
| | | | | | - I. Galadari
- Faculty of Medicine; United Arab Emirates University; Dubai UAE
| | - A.-G. Kibbi
- American University of Beirut Medical Center; Beirut Lebanon
| | - S. Zimmo
- King Abdulaziz University; Jeddah Saudi Arabia
| |
Collapse
|
38
|
Abstract
This review based on translational research predicts that the transcription factor p53 is the key effector of all anti-acne therapies. All-trans retinoic acid (ATRA) and isotretinoin (13-cis retinoic acid) enhance p53 expression. Tetracyclines and macrolides via inhibiting p450 enzymes attenuate ATRA degradation, thereby increase p53. Benzoyl peroxide and hydrogen peroxide elicit oxidative stress, which upregulates p53. Azelaic acid leads to mitochondrial damage associated with increased release of reactive oxygen species inducing p53. p53 inhibits the expression of androgen receptor and IGF-1 receptor, and induces the expression of IGF binding protein 3. p53 induces FoxO1, FoxO3, p21 and sestrin 1, sestrin 2, and tumour necrosis factor-related apoptosis-inducing ligand (TRAIL), the key inducer of isotretinoin-mediated sebocyte apoptosis explaining isotretinoin's sebum-suppressive effect. Anti-androgens attenuate the expression of miRNA-125b, a key negative regulator of p53. It can thus be concluded that all anti-acne therapies have a common mode of action, i.e., upregulation of the guardian of the genome p53. Immortalized p53-inactivated sebocyte cultures are unfortunate models for studying acne pathogenesis and treatment.
Collapse
Affiliation(s)
- Bodo C Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, Am Finkenhügel 7a, 49076, Osnabrück, Germany.
| |
Collapse
|
39
|
Melnik BC. Milk disrupts p53 and DNMT1, the guardians of the genome: implications for acne vulgaris and prostate cancer. Nutr Metab (Lond) 2017; 14:55. [PMID: 28814964 PMCID: PMC5556685 DOI: 10.1186/s12986-017-0212-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 08/08/2017] [Indexed: 02/06/2023] Open
Abstract
There is accumulating evidence that milk shapes the postnatal metabolic environment of the newborn infant. Based on translational research, this perspective article provides a novel mechanistic link between milk intake and milk miRNA-regulated gene expression of the transcription factor p53 and DNA methyltransferase 1 (DNMT1), two guardians of the human genome, that control transcriptional activity, cell survival, and apoptosis. Major miRNAs of milk, especially miRNA-125b, directly target TP53 and complex p53-dependent gene regulatory networks. TP53 regulates the expression of key genes involved in cell homeostasis such as FOXO1, PTEN, SESN1, SESN2, AR, IGF1R, BAK1, BIRC5, and TNFSF10. Nuclear interaction of p53 with DNMT1 controls gene silencing. The most abundant miRNA of milk and milk fat, miRNA-148a, directly targets DNMT1. Reduced DNMT1 expression further attenuates the activity of histone deacetylase 1 (HDAC1) involved in the regulation of chromatin structure and access to transcription. The presented milk-mediated miRNA-p53-DNMT1 pathway exemplified at the promoter regulation of survivin (BIRC5) provides a novel explanation for the epidemiological association between milk consumption and acne vulgaris and prostate cancer. Notably, p53- and DNMT1-targeting miRNAs of bovine and human milk survive pasteurization and share identical seed sequences, which theoretically allows the interaction of bovine miRNAs with the human genome. Persistent intake of milk-derived miRNAs that attenuate p53- and DNMT1 signaling of the human milk consumer may thus present an overlooked risk factor promoting acne vulgaris, prostate cancer, and other p53/DNMT1-related Western diseases. Therefore, bioactive miRNAs of commercial milk should be eliminated from the human food chain.
Collapse
Affiliation(s)
- Bodo C. Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, Am Finkenhügel 7a, D-49076 Osnabrück, Germany
| |
Collapse
|
40
|
Chilicka K, Maj J, Panaszek B. General quality of life of patients with acne vulgaris before and after performing selected cosmetological treatments. Patient Prefer Adherence 2017; 11:1357-1361. [PMID: 28831246 PMCID: PMC5553351 DOI: 10.2147/ppa.s131184] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Achieving a satisfying quality of life for a patient by applying individually matched therapy is, simultaneously, a great challenge and a priority for contemporary medicine. Patients with visible dermatological ailments are particularly susceptible to reduction in the general quality of life. Among the dermatological diseases, acne causes considerable reduction in the quality of life and changes in self-perception that lead to the worsening of a patient's mental condition, including depression and suicidal thoughts. As a result, difficulties in contact with loved ones, as well as social and professional problems are observed, which show that acne is not a somatic problem alone. To a large extent, it becomes a part of psychodermatology, becoming an important topic of public health in social medicine practice. Pharmacological treatment of acne is a challenge for a dermatologist and often requires the necessity of cooperating with a cosmetologist. Cosmetological treatments are aimed at improving the condition of the skin and reduction or subsiding of acne skin changes. AIM The aim of this study was to assess the influence of selected cosmetological treatments on the general quality of life of patients with acne. MATERIALS AND METHODS The study group consisted of 101 women aged 19-29 years ([Formula: see text] years, SD =2.3 years). All subjects were diagnosed with acne vulgaris of the face. In the study group, the acne changes occurred over the course of 3-15 years ([Formula: see text] years, SD =2.7 years). Selected cosmetological treatments (intensive pulsing light, alpha-hydroxy acids, cavitation peeling, needle-free mesotherapy, diamond microdermabrasion and sonophoresis) were performed in series in the number depending on the particular patient's chosen treatment, after excluding contraindications. General quality of life of the patients was estimated using the Skindex-29 and Dermatology Life Quality Index (DLQI) questionnaires, before and after the cosmetological treatment. RESULTS Statistical analysis of the data obtained from the Skindex-29 questionnaire in areas (emotions, symptoms and physical functioning) and DLQI questionnaire in areas (daily activities, leisure, work and school, personal relations and treatment) showed great improvement in the general quality of life after applying a series of cosmetological treatments. The results are statistically relevant at P<0.0001. CONCLUSION The cosmetological treatment significantly improved the general quality of life of patients with acne vulgaris and their skin condition, which was evaluated by the Hellgren-Vincent scale. It was proven that therapy performed in cosmetological clinics may become an integral part of or complete dermatological treatment.
Collapse
Affiliation(s)
| | - Joanna Maj
- Department of Dermatology, Venereology and Allergology
| | - Bernard Panaszek
- Department of Internal Medicine and Allergy, Wroclaw Medical University, Wrocław, Poland
- Correspondence: Bernard Panaszek, Department of Internal Medicine and Allergy, Wroclaw Medical University, ul. Curie-Skłodowskiej 66, 50-369 Wrocław, Poland, Tel +48 71 784 2520, Email
| |
Collapse
|
41
|
Fabbrocini G, Bertona M, Picazo Ó, Pareja-Galeano H, Monfrecola G, Emanuele E. Supplementation with Lactobacillus rhamnosus SP1 normalises skin expression of genes implicated in insulin signalling and improves adult acne. Benef Microbes 2016; 7:625-630. [PMID: 27596801 DOI: 10.3920/bm2016.0089] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Systemic supplementation with probiotics is increasingly being explored as a potential treatment strategy for skin disorders. Because both the gut-skin axis and dysregulation of insulin signalling have been implicated in the pathogenesis of adult acne, we designed the current study to evaluate the effect of supplementation with the probiotic strain Lactobacillus rhamnosus SP1 (LSP1) on skin expression of genes involved in insulin signalling and acne improvement in adult subjects. A pilot, randomised, double-blinded, placebo-controlled study was conducted with 20 adult subjects (14 females and 6 males; mean age: 33.7±3.3 years) with acne. Over a 12-week period, the probiotic group (n=10) consumed a liquid supplement containing LSP1 at a dose of 3×109 cfu/day (75 mg/day), whereas the placebo group (n=10) received a liquid lacking probiotics. Paired skin biopsies - one obtained before treatment initiation and one obtained at the end of the 12-week treatment period - were analysed for insulin-like growth factor 1 (IGF1) and forkhead box protein O1 (FOXO1) gene expression. The clinical criterion for efficacy was the investigator's global improvement rating on a five-point scale. Compared with baseline, the probiotic group showed a 32% (P<0.001) reduction, as well as a 65% increase (P<0.001) in IGF1 and FOXO1 gene expression in the skin, respectively. No such differences were observed in the placebo group. Patients in the probiotic group had an adjusted odds ratio of 28.4 (95% confidence interval = 2.2-411.1, P<0.05) to be rated by physicians as improved/markedly improved (versus worsened or unchanged) compared with the placebo group. We conclude that supplementation with the probiotic strain LSP1 normalises skin expression of genes involved in insulin signalling and improves the appearance of adult acne.
Collapse
Affiliation(s)
- G Fabbrocini
- 1 Department of Clinical Medicine and Surgery, Section of Dermatology, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - M Bertona
- 2 2E Science, Via Monte Grappa, 13, 27038 Robbio (PV), Italy
| | - Ó Picazo
- 3 Nutriscience Education and Consulting, Avenida das Forças Armadas, 1600-082 Lisbon, Portugal
| | - H Pareja-Galeano
- 4 Universidad Europea and Research Institute i+12, Tajo s/n, Villaviciosa de Odón, 28670 Madrid, Spain
| | - G Monfrecola
- 1 Department of Clinical Medicine and Surgery, Section of Dermatology, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - E Emanuele
- 2 2E Science, Via Monte Grappa, 13, 27038 Robbio (PV), Italy
| |
Collapse
|
42
|
Tan JKL, Bhate K. A global perspective on the epidemiology of acne. Br J Dermatol 2016; 172 Suppl 1:3-12. [PMID: 25597339 DOI: 10.1111/bjd.13462] [Citation(s) in RCA: 287] [Impact Index Per Article: 35.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/18/2014] [Indexed: 12/15/2022]
Abstract
Acne is estimated to affect 9.4% of the global population, making it the eighth most prevalent disease worldwide. Epidemiological studies have demonstrated that acne is most common in postpubescent teens, with boys most frequently affected, particularly with more severe forms of the disease. This paper aims to provide an update on the epidemiology of acne worldwide. Recent general and institutional studies from around the world have shown that the prevalence of acne is broadly consistent globally (with the exception of specific populations, which are discussed). However, this review highlights that there is a wide range of disparate outcome measures being applied in epidemiology studies, and we emphasize the need to develop a widely accepted, credible, standard assessment scale to address this in the future. In addition we discuss special populations, such as those devoid of acne, as well as the impact of potential determinants of acne on disease epidemiology.
Collapse
Affiliation(s)
- J K L Tan
- Windsor Clinical Research Inc. and Western University, London, ON, Canada
| | - K Bhate
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, U.K
| |
Collapse
|
43
|
López-Lázaro M. Understanding why aspirin prevents cancer and why consuming very hot beverages and foods increases esophageal cancer risk. Controlling the division rates of stem cells is an important strategy to prevent cancer. Oncoscience 2015; 2:849-56. [PMID: 26682276 PMCID: PMC4671951 DOI: 10.18632/oncoscience.257] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 11/09/2015] [Indexed: 12/16/2022] Open
Abstract
Cancer is, in essence, a stem cell disease. The main biological cause of cancer is that stem cells acquire DNA alterations during cell division. The more stem cell divisions a tissue accumulates over a lifetime, the higher is the risk of cancer in that tissue. This explains why cancer is diagnosed millions of times more often in some tissues than in others, and why cancer incidence increases so dramatically with age. It may also explain why taking a daily low-dose aspirin for several years reduces the risk of developing and dying from cancer. Since aspirin use reduces PGE2 levels and PGE2 fuels stem cell proliferation, aspirin may prevent cancer by restricting the division rates of stem cells. The stem cell division model of cancer may also explain why regular consumption of very hot foods and beverages increases the risk of developing esophageal cancer. Given that tissue injury activates stem cell division for repair, the thermal injury associated with this dietary habit will increase esophageal cancer risk by inducing the accumulation of stem cell divisions in the esophagus. Using these two examples, here I propose that controlling the division rates of stem cells is an essential approach to preventing cancer.
Collapse
Affiliation(s)
- Miguel López-Lázaro
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Spain
| |
Collapse
|
44
|
Li F, Li Y, Liu H, Zhang X, Liu C, Tian K, Bolund L, Dou H, Yang W, Yang H, Staunstrup NH, Du Y. Transgenic Wuzhishan minipigs designed to express a dominant-negative porcine growth hormone receptor display small stature and a perturbed insulin/IGF-1 pathway. Transgenic Res 2015; 24:1029-42. [PMID: 26510874 DOI: 10.1007/s11248-015-9912-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 10/16/2015] [Indexed: 11/24/2022]
Abstract
Growth hormone (GH) is an anabolic mitogen with widespread influence on cellular growth and differentiation as well as on glucose and lipid metabolism. GH binding to the growth hormone receptor (GHR) on hepatocytes prompts expression of insulin growth factor I (IGF-1) involved in nutritionally induced compensatory hyperplasia of pancreatic β-cell islets and insulin release. A prolonged hyperactivity of the IGF-1/insulin axis in the face of insulinotropic nutrition, on the other hand, can lead to collapse of the pancreatic islets and glucose intolerance. Individuals with Laron syndrome carry mutations in the GHR gene resulting in severe congenital IGF-1 deficiency and elevated GH serum levels leading to short stature as well as perturbed lipid and glucose metabolism. However, these individuals enjoy a reduced prevalence of acne, cancer and possibly diabetes. Minipigs have become important biomedical models for human conditions due to similarities in organ anatomy, physiology, and metabolism relative to humans. The purpose of this study was to generate transgenic Wuzhishan minipigs by handmade cloning with impaired systemic GHR activity and assess their growth profile and glucose metabolism. Transgenic minipigs featuring overexpression of a dominant-negative porcine GHR (GHR(dm)) presented postnatal growth retardation and proportionate dwarfism. Molecular changes included elevated GH serum levels and mild hyperglycemia. We believe that this model may prove valuable in the study of GH functions in relation to cancer, diabetes and longevity.
Collapse
Affiliation(s)
- Feida Li
- BGI-Shenzhen, Shenzhen, 518083, China.,ShenZhen Engineering Laboratory for Genomics-Assisted Animal Breeding, BGI-Shenzhen, 8F Main Building, Beishan Industrial Zone, Yantian District, Shenzhen, 518083, China
| | - Yong Li
- BGI-Shenzhen, Shenzhen, 518083, China.,BGI Ark Biotechnology (BAB), Shenzhen, 518083, China.,ShenZhen Engineering Laboratory for Genomics-Assisted Animal Breeding, BGI-Shenzhen, 8F Main Building, Beishan Industrial Zone, Yantian District, Shenzhen, 518083, China
| | - Huan Liu
- BGI-Shenzhen, Shenzhen, 518083, China.,ShenZhen Engineering Laboratory for Genomics-Assisted Animal Breeding, BGI-Shenzhen, 8F Main Building, Beishan Industrial Zone, Yantian District, Shenzhen, 518083, China
| | - Xingju Zhang
- BGI-Shenzhen, Shenzhen, 518083, China.,ShenZhen Engineering Laboratory for Genomics-Assisted Animal Breeding, BGI-Shenzhen, 8F Main Building, Beishan Industrial Zone, Yantian District, Shenzhen, 518083, China
| | - Chuxin Liu
- BGI-Shenzhen, Shenzhen, 518083, China.,ShenZhen Engineering Laboratory for Genomics-Assisted Animal Breeding, BGI-Shenzhen, 8F Main Building, Beishan Industrial Zone, Yantian District, Shenzhen, 518083, China
| | - Kai Tian
- BGI-Shenzhen, Shenzhen, 518083, China.,ShenZhen Engineering Laboratory for Genomics-Assisted Animal Breeding, BGI-Shenzhen, 8F Main Building, Beishan Industrial Zone, Yantian District, Shenzhen, 518083, China
| | - Lars Bolund
- BGI-Shenzhen, Shenzhen, 518083, China.,Department of Biomedicine, Aarhus University, Wilhelm Meyers allé 1240, 8000, Aarhus C, Denmark
| | - Hongwei Dou
- BGI Ark Biotechnology (BAB), Shenzhen, 518083, China.,ShenZhen Engineering Laboratory for Genomics-Assisted Animal Breeding, BGI-Shenzhen, 8F Main Building, Beishan Industrial Zone, Yantian District, Shenzhen, 518083, China
| | - Wenxian Yang
- BGI Ark Biotechnology (BAB), Shenzhen, 518083, China.,ShenZhen Engineering Laboratory for Genomics-Assisted Animal Breeding, BGI-Shenzhen, 8F Main Building, Beishan Industrial Zone, Yantian District, Shenzhen, 518083, China
| | | | - Nicklas Heine Staunstrup
- Department of Biomedicine, Aarhus University, Wilhelm Meyers allé 1240, 8000, Aarhus C, Denmark.
| | - Yutao Du
- BGI-Shenzhen, Shenzhen, 518083, China. .,BGI Ark Biotechnology (BAB), Shenzhen, 518083, China. .,ShenZhen Engineering Laboratory for Genomics-Assisted Animal Breeding, BGI-Shenzhen, 8F Main Building, Beishan Industrial Zone, Yantian District, Shenzhen, 518083, China.
| |
Collapse
|
45
|
Abstract
Acne vulgaris is a chronic inflammatory disease - rather than a natural part of the life cycle as colloquially viewed - of the pilosebaceous unit (comprising the hair follicle, hair shaft and sebaceous gland) and is among the most common dermatological conditions worldwide. Some of the key mechanisms involved in the development of acne include disturbed sebaceous gland activity associated with hyperseborrhoea (that is, increased sebum production) and alterations in sebum fatty acid composition, dysregulation of the hormone microenvironment, interaction with neuropeptides, follicular hyperkeratinization, induction of inflammation and dysfunction of the innate and adaptive immunity. Grading of acne involves lesion counting and photographic methods. However, there is a lack of consensus on the exact grading criteria, which hampers the conduction and comparison of randomized controlled clinical trials evaluating treatments. Prevention of acne relies on the successful management of modifiable risk factors, such as underlying systemic diseases and lifestyle factors. Several treatments are available, but guidelines suffer from a lack of data to make evidence-based recommendations. In addition, the complex combination treatment regimens required to target different aspects of acne pathophysiology lead to poor adherence, which undermines treatment success. Acne commonly causes scarring and reduces the quality of life of patients. New treatment options with a shift towards targeting the early processes involved in acne development instead of suppressing the effects of end products will enhance our ability to improve the outcomes for patients with acne.
Collapse
|
46
|
Abstract
Acne vulgaris, an epidemic inflammatory skin disease of adolescence, is closely related to Western diet. Three major food classes that promote acne are: 1) hyperglycemic carbohydrates, 2) milk and dairy products, 3) saturated fats including trans-fats and deficient ω-3 polyunsaturated fatty acids (PUFAs). Diet-induced insulin/insulin-like growth factor (IGF-1)-signaling is superimposed on elevated IGF-1 levels during puberty, thereby unmasking the impact of aberrant nutrigenomics on sebaceous gland homeostasis. Western diet provides abundant branched-chain amino acids (BCAAs), glutamine, and palmitic acid. Insulin and IGF-1 suppress the activity of the metabolic transcription factor forkhead box O1 (FoxO1). Insulin, IGF-1, BCAAs, glutamine, and palmitate activate the nutrient-sensitive kinase mechanistic target of rapamycin complex 1 (mTORC1), the key regulator of anabolism and lipogenesis. FoxO1 is a negative coregulator of androgen receptor, peroxisome proliferator-activated receptor-γ (PPARγ), liver X receptor-α, and sterol response element binding protein-1c (SREBP-1c), crucial transcription factors of sebaceous lipogenesis. mTORC1 stimulates the expression of PPARγ and SREBP-1c, promoting sebum production. SREBP-1c upregulates stearoyl-CoA- and Δ6-desaturase, enhancing the proportion of monounsaturated fatty acids in sebum triglycerides. Diet-mediated aberrations in sebum quantity (hyperseborrhea) and composition (dysseborrhea) promote Propionibacterium acnes overgrowth and biofilm formation with overexpression of the virulence factor triglyceride lipase increasing follicular levels of free palmitate and oleate. Free palmitate functions as a "danger signal," stimulating toll-like receptor-2-mediated inflammasome activation with interleukin-1β release, Th17 differentiation, and interleukin-17-mediated keratinocyte proliferation. Oleate stimulates P. acnes adhesion, keratinocyte proliferation, and comedogenesis via interleukin-1α release. Thus, diet-induced metabolomic alterations promote the visible sebofollicular inflammasomopathy acne vulgaris. Nutrition therapy of acne has to increase FoxO1 and to attenuate mTORC1/SREBP-1c signaling. Patients should balance total calorie uptake and restrict refined carbohydrates, milk, dairy protein supplements, saturated fats, and trans-fats. A paleolithic-like diet enriched in vegetables and fish is recommended. Plant-derived mTORC1 inhibitors and ω-3-PUFAs are promising dietary supplements supporting nutrition therapy of acne vulgaris.
Collapse
Affiliation(s)
- Bodo C Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, Germany
| |
Collapse
|
47
|
Erdrich S, Bishop KS, Karunasinghe N, Han DY, Ferguson LR. A pilot study to investigate if New Zealand men with prostate cancer benefit from a Mediterranean-style diet. PeerJ 2015; 3:e1080. [PMID: 26157638 PMCID: PMC4493678 DOI: 10.7717/peerj.1080] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Accepted: 06/14/2015] [Indexed: 12/23/2022] Open
Abstract
Carcinoma of the prostate is the most commonly diagnosed malignancy and the third leading cause of mortality in New Zealand men, making it a significant health issue in this country. Global distribution patterns suggest that diet and lifestyle factors may be linked to the development and progression of this cancer. Twenty men with diagnosed prostate cancer adhered to a Mediterranean diet, with specific adaptations, for three months. Prostate-specific antigen, C-reactive protein and DNA damage were evaluated at baseline and after three months of following the diet. Dietary data were collated from diet diaries and an adaptation of a validated Mediterranean diet questionnaire. A significant reduction in DNA damage compared to baseline was apparent, with particular benefit noted for overall adherence to the diet (p = 0.013), increased intake of folate (p = 0.023), vitamin C (p = 0.007), legumes (p = 0.004) and green tea (p = 0.002). Higher intakes of red meat and dairy products were inversely associated with DNA damage (p = 0.003 and p = 0.008 respectively). The results from this small feasibility study suggest that a high-antioxidant diet, modelled on Mediterranean traditions, may be of benefit for men with prostate cancer. Protection against DNA damage appears to be associated with the diet implemented, ostensibly due to reduction in reactive oxidant species. These findings warrant further exploration in a longer trial, with a larger cohort.
Collapse
Affiliation(s)
- Sharon Erdrich
- Discipline of Nutrition, FM&HS, University of Auckland , Auckland , New Zealand
| | - Karen S Bishop
- Auckland Cancer Society Research Centre, FM & HS, University of Auckland , Auckland , New Zealand
| | - Nishi Karunasinghe
- Auckland Cancer Society Research Centre, FM & HS, University of Auckland , Auckland , New Zealand
| | - Dug Yeo Han
- Nutrigenomics New Zealand, University of Auckland , Auckland , New Zealand
| | - Lynnette R Ferguson
- Discipline of Nutrition, FM&HS, University of Auckland , Auckland , New Zealand ; Auckland Cancer Society Research Centre, FM & HS, University of Auckland , Auckland , New Zealand ; Nutrigenomics New Zealand, University of Auckland , Auckland , New Zealand
| |
Collapse
|
48
|
Insulin resistance and skin diseases. ScientificWorldJournal 2015; 2015:479354. [PMID: 25977937 PMCID: PMC4419263 DOI: 10.1155/2015/479354] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 03/17/2015] [Indexed: 12/16/2022] Open
Abstract
In medical practice, almost every clinician may encounter patients with skin disease. However, it is not always easy for physicians of all specialties to face the daily task of determining the nature and clinical implication of dermatologic manifestations. Are they confined to the skin, representing a pure dermatologic event? Or are they also markers of internal conditions relating to the patient's overall health? In this review, we will discuss the principal cutaneous conditions which have been linked to metabolic alterations. Particularly, since insulin has an important role in homeostasis and physiology of the skin, we will focus on the relationships between insulin resistance (IR) and skin diseases, analyzing strongly IR-associated conditions such as acanthosis nigricans, acne, and psoriasis, without neglecting emerging and potential scenarios as the ones represented by hidradenitis suppurativa, androgenetic alopecia, and hirsutism.
Collapse
|
49
|
Bishop KS, Erdrich S, Karunasinghe N, Han DY, Zhu S, Jesuthasan A, Ferguson LR. An investigation into the association between DNA damage and dietary fatty acid in men with prostate cancer. Nutrients 2015; 7:405-22. [PMID: 25580814 PMCID: PMC4303847 DOI: 10.3390/nu7010405] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 12/19/2014] [Indexed: 11/16/2022] Open
Abstract
Prostate cancer is a growing problem in New Zealand and worldwide, as populations adopt a Western style dietary pattern. In particular, dietary fat is believed to be associated with oxidative stress, which in turn may be associated with cancer risk and development. In addition, DNA damage is associated with the risk of various cancers, and is regarded as an ideal biomarker for the assessment of the influence of foods on cancer. In the study presented here, 20 men with prostate cancer adhered to a modified Mediterranean style diet for three months. Dietary records, blood fatty acid levels, prostate specific antigen, C-reactive protein and DNA damage were assessed pre- and post-intervention. DNA damage was inversely correlated with dietary adherence (p = 0.013) and whole blood monounsaturated fatty acids (p = 0.009) and oleic acid (p = 0.020). DNA damage was positively correlated with the intake of dairy products (p = 0.043), red meat (p = 0.007) and whole blood omega-6 polyunsaturated fatty acids (p = 0.015). Both the source and type of dietary fat changed significantly over the course of the dietary intervention. Levels of DNA damage were correlated with various dietary fat sources and types of dietary fat.
Collapse
Affiliation(s)
- Karen S Bishop
- Auckland Cancer Society Research Centre, FM & HS, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Sharon Erdrich
- Discipline of Nutrition, FM & HS, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Nishi Karunasinghe
- Auckland Cancer Society Research Centre, FM & HS, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Dug Yeo Han
- Nutrigenomics New Zealand, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Shuotun Zhu
- Nutrigenomics New Zealand, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Amalini Jesuthasan
- Nutrigenomics New Zealand, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Lynnette R Ferguson
- Auckland Cancer Society Research Centre, FM & HS, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| |
Collapse
|
50
|
Melkonian SC, Daniel CR, Hildebrandt MAT, Tannir NM, Ye Y, Chow WH, Wood CG, Wu X. Joint association of genome-wide association study-identified susceptibility loci and dietary patterns in risk of renal cell carcinoma among non-Hispanic whites. Am J Epidemiol 2014; 180:499-507. [PMID: 25053674 DOI: 10.1093/aje/kwu158] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Dietary factors may affect risk of renal cell carcinoma (RCC). In an ongoing case-control study of RCC initiated in Houston, Texas, in 2002, we identified 3 empirically derived dietary patterns: "fruits and vegetables," "American/Western," and "Tex-Mex." Among 659 RCC cases and 699 controls, we evaluated associations of these dietary patterns with RCC risk and whether the associations varied by obesity status, smoking status, physical activity level, history of hypertension, and genetic variants previously identified via genome-wide association studies. Among persons in the highest categories of adherence versus the lowest, the "fruits and vegetables" dietary pattern was associated with an approximately 50% lower RCC risk (Ptrend < 0.001), while "American/Western" dietary pattern scores were positively associated with a 2-fold higher risk (Ptrend < 0.001). We observed synergistic interaction between the American/Western pattern and hypertension status: The odds ratio (highest tertile vs. lowest) among persons with hypertension was 2.23 (95% confidence interval: 1.43, 3.45), as compared with 1.76 (95% confidence interval: 1.16, 2.70) among persons without hypertension (additive Pinteraction = 0.01). A variant (rs718314) in the inositol 1,4,5-trisphosphate receptor, type 2 gene (ITPR2) was found to interact with the American/Western dietary pattern in relation to RCC risk (additive Pinteraction = 0.03). ITPR2 has been shown to affect nutrient metabolism and central obesity. Dietary patterns, genetic variants, and host characteristics may individually and jointly influence susceptibility to RCC.
Collapse
|