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Vaishnavi V, Ritu S, Neetu B. Russel's sign: Unilateral hand callosities in bulimia nervosa. J R Coll Physicians Edinb 2024; 54:62-63. [PMID: 38284392 DOI: 10.1177/14782715241228325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024] Open
Affiliation(s)
- Verma Vaishnavi
- All India Institute of Medical Sciences, New Delhi, DL, India
| | - Sharma Ritu
- All India Institute of Medical Sciences, New Delhi, DL, India
| | - Bhari Neetu
- All India Institute of Medical Sciences, New Delhi, DL, India
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2
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Zou NY, Liu R, Huang M, Jiao YR, Wei J, Jiang Y, He WZ, Huang M, Xu YL, Liu L, Sun YC, Yang M, Guo Q, Huang Y, Su T, Xiao Y, Wang WS, Zeng C, Lei GH, Luo XH, Li CJ. Age-related secretion of grancalcin by macrophages induces skeletal stem/progenitor cell senescence during fracture healing. Bone Res 2024; 12:6. [PMID: 38267422 PMCID: PMC10808101 DOI: 10.1038/s41413-023-00309-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 01/26/2024] Open
Abstract
Skeletal stem/progenitor cell (SSPC) senescence is a major cause of decreased bone regenerative potential with aging, but the causes of SSPC senescence remain unclear. In this study, we revealed that macrophages in calluses secrete prosenescent factors, including grancalcin (GCA), during aging, which triggers SSPC senescence and impairs fracture healing. Local injection of human rGCA in young mice induced SSPC senescence and delayed fracture repair. Genetic deletion of Gca in monocytes/macrophages was sufficient to rejuvenate fracture repair in aged mice and alleviate SSPC senescence. Mechanistically, GCA binds to the plexin-B2 receptor and activates Arg2-mediated mitochondrial dysfunction, resulting in cellular senescence. Depletion of Plxnb2 in SSPCs impaired fracture healing. Administration of GCA-neutralizing antibody enhanced fracture healing in aged mice. Thus, our study revealed that senescent macrophages within calluses secrete GCA to trigger SSPC secondary senescence, and GCA neutralization represents a promising therapy for nonunion or delayed union in elderly individuals.
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Affiliation(s)
- Nan-Yu Zou
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Ran Liu
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Mei Huang
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Yu-Rui Jiao
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Jie Wei
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Changsha, Hunan, 410008, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
| | - Yangzi Jiang
- School of Biomedical Sciences, Institute for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Wen-Zhen He
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Min Huang
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Yi-Li Xu
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Ling Liu
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Yu-Chen Sun
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Mi Yang
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Qi Guo
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Yan Huang
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Tian Su
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Ye Xiao
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Wei-Shan Wang
- Department of Orthopaedics, The First Affiliated Hospital of Shihezi University, Shihezi, Xinjiang, China
| | - Chao Zeng
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Changsha, Hunan, 410008, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Guang-Hua Lei
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
- Hunan Key Laboratory of Joint Degeneration and Injury, Changsha, Hunan, 410008, China
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Xiang-Hang Luo
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China.
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.
| | - Chang-Jun Li
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China.
- Key Laboratory of Aging-related Bone and Joint Diseases Prevention and Treatment, Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.
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Cao J, Guo J, Xu L, Ni Y, Niu C, Jin L, Zhang F. Comparison of triplanar chevron osteotomy with chevron osteotomy in hallux valgus treatment for the prevention of transfer metatarsalgia. Medicine (Baltimore) 2024; 103:e36912. [PMID: 38241574 PMCID: PMC10798714 DOI: 10.1097/md.0000000000036912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 12/19/2023] [Indexed: 01/21/2024] Open
Abstract
Hallux valgus (HV) is often accompanied by metatarsalgia. This study compared the radiological and clinical outcomes of new triplanar chevron osteotomy (TCO) and chevron osteotomy (CO) in the treatment of HV, especially for patients with plantar callosities and metatarsalgia. In this retrospective analysis, 90 patients (45 patients per group) with mild to moderate HV and plantar callosities were treated with TCO and CO from July 2020 to January 2022. In both procedures, the apex was located in the center of the head of the first metatarsal bone, and the CO was oriented towards the fourth MTPJ at a 60° angle. Plantar-oblique chevron osteotomy was defined as chevron osteotomy and a 20° plantar tilt; TCO was defined as plantar-oblique chevron osteotomy-based metatarsal osteotomy with a 10° tilt towards the metatarsal head. Primary outcome measures included preoperative and postoperative hallux valgus angle, 1 to 2 intermetatarsal angle (IMA), distal metatarsal articular angle (DMAA), first metatarsal length (FML), and second metatarsal head height X-ray images; clinical measurements, including visual analogue scale and American Orthopaedic Foot & Ankle Society (AOFAS) scores; changes in callosity grade and area; and changes in the number of people with metatarsalgia. Secondary outcomes included complications, recurrence rates, and cosmetic appearance. The hallux valgus angle, IMA, and DMAA were significantly lower after surgery (P < .001) in all patients. In the TCO group, the mean FML and second metatarsal head height increased significantly postoperatively (P < .001). The AOFAS and visual analogue scale scores improved postoperatively in both groups (P < .001). All patients experienced satisfactory pain relief and acceptable cosmesis. The plantar callosity areas were smaller postoperatively in both the TCO and CO groups, but the change in the area (Δarea) in the TCO group significantly differed from that in the CO group (P < .001). The number of postoperative patients with metatarsalgia and the plantar callosity grade were both significantly lower in the TCO group than in the CO group after osteotomy (P < .05). TCO prevents dorsal shift of the metatarsal head and preserves and even increases FML, thereby preventing future metatarsalgia in patients. Therefore, compared with CO, TCO has better orthopedic outcomes and is an effective method for treating mild to moderate HV and preventing transfer metatarsalgia.
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Affiliation(s)
- Jianming Cao
- Department of Foot and Ankle Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- Department of Hand and Foot Orthopaedic Surgery, Xingtai People’s Hospital Affiliated to Hebei Medical University, Xingtai, Hebei, China
| | - Jialiang Guo
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Lihui Xu
- Department of Hand and Foot Orthopaedic Surgery, Xingtai People’s Hospital Affiliated to Hebei Medical University, Xingtai, Hebei, China
| | - Yulong Ni
- Department of Hand and Foot Orthopaedic Surgery, Xingtai People’s Hospital Affiliated to Hebei Medical University, Xingtai, Hebei, China
| | - Chao Niu
- Department of Hand and Foot Orthopaedic Surgery, Xingtai People’s Hospital Affiliated to Hebei Medical University, Xingtai, Hebei, China
| | - Liang Jin
- Department of Hand and Foot Orthopaedic Surgery, Xingtai People’s Hospital Affiliated to Hebei Medical University, Xingtai, Hebei, China
| | - Fengqi Zhang
- Department of Foot and Ankle Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
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Sadrzadeh-Afsharazar F, Raizman R, Saiko G. Utility of Thermographic Imaging for Callus Identification in Wound and Foot Care. Sensors (Basel) 2023; 23:9376. [PMID: 38067749 PMCID: PMC10708640 DOI: 10.3390/s23239376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 11/09/2023] [Accepted: 11/14/2023] [Indexed: 12/18/2023]
Abstract
Calluses are thickened skin areas that develop due to repeated friction, pressure, or other types of irritation. While calluses are usually harmless and formed as a protective surface, they can lead to skin ulceration or infection if left untreated. As calluses are often not clearly visible to the patients, and some areas of dead skin can be missed during debridement, accessory tools can be useful in assessment and follow-up. The practical question addressed in this article is whether or not thermal imaging adds value to callus assessment. We have performed a theoretical analysis of the feasibility of thermographic imaging for callus identification. Our analytical calculations show that the temperature drop in the epidermis should be on the order of 0.1 °C for the normal epidermis in hairy skin, 0.9 °C for glabrous skin, and 1.5-2 °C or higher in calluses. We have validated our predictions on gelatin phantoms and demonstrated the feasibility of thermographic imaging for callus identification in two clinical case series. Our experimental results are in agreement with theoretical predictions and support the notion that local skin temperature variations can indicate epidermis thickness variations, which can be used for callus identification. In particular, a surface temperature drop on the order of 0.5 °C or more can be indicative of callus presence, particularly in callus-prone areas. In addition, our analytical calculations and phantom experiments show the importance of ambient temperature measurements during thermographic assessments.
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Affiliation(s)
- Faraz Sadrzadeh-Afsharazar
- Department of Electrical, Computer and Biomedical Engineering, Toronto Metropolitan University, Toronto, ON M5B 2K3, Canada
| | - Rose Raizman
- Lawrence S. Bloomberg Faculty of Nursing, University of Toronto, Toronto, ON M5S 1A8, Canada
- Scarborough Health Network, Toronto, ON M1E 4B9, Canada
| | - Gennadi Saiko
- Department of Physics, Toronto Metropolitan University, Toronto, ON M5B 2K3, Canada
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Tonial Simões C, Kobs Vidal J, da Rosa da Silva C, Alves Sarturi J, Fabris Laber I, Madalosso T, Mallmann CA. A two-year study on the occurrence and concentration of mycotoxins in corn varieties with different endosperm textures. J Sci Food Agric 2023; 103:7199-7206. [PMID: 37347847 DOI: 10.1002/jsfa.12801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 06/16/2023] [Accepted: 06/22/2023] [Indexed: 06/24/2023]
Abstract
BACKGROUND Mycotoxin monitoring in cereal grains has great importance in the food and feed industries. This study evaluated mycotoxin contamination in corns with different endosperm textures in 2 years of cultivation. Samples of dent, semi-dent, flint and semi-flint corns from field experiments were analyzed by high-performance liquid chromatography coupled with tandem mass spectrometry (HPLC-MS/MS). RESULTS Occurrences of fumonisins B1 (FB1 ) and B2 (FB2 ) in 2020 were 45.72% (mean 270 μg kg-1 ) and 35.89% (94.97 μg kg-1 ), respectively, and 68.98% (446 μg kg-1 ) and 45.83% (152 μg kg-1 ) in 2021. Occurrence of aflatoxin B1 was 11.96% (0.16 μg kg-1 ) in 2020 and 11.11% (0.13 μg kg-1 ) in 2021. In 2020, deoxynivalenol (DON) and zearalenona (ZEA) presented occurrences of 1.28% and 1.70%, with means of 4.08 and 2.45 μg kg-1 , respectively. In 2021, results were 8.33% (31.00 μg kg-1 ) for DON and 8.79% (4.38 μg kg-1 ) for ZEA. Citrinin, diacetoxyscirpenol and fusarenon-X did not occur in 2020 but presented 1.66%, 0.83%, and 2.50% positive rates in 2021, respectively. In 2020, flint corn presented the lowest concentration of FB1 whereas dent corn presented the highest concentration of FB1 and FB2 (P < 0.05). In 2021, dent corn presented the highest means of FB1 , FB2 and diacetoxyscirpenol (P < 0.05). Dent and semi-dent presented the highest concentration of nivalenol (P < 0.05). CONCLUSION The endosperm texture influenced mycotoxin contamination in corn grains, especially FB1 and FB2 , which had the highest concentration in dent corn in the 2 years of this study. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Cristina Tonial Simões
- Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Brazil
| | - Juliano Kobs Vidal
- Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Brazil
| | | | - Janine Alves Sarturi
- Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Brazil
| | - Isadora Fabris Laber
- Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Brazil
| | - Tiago Madalosso
- Centro de Pesquisa Agrícola, Cooperativa Agroindustrial Consolata, Cafelândia, Brazil
| | - Carlos Augusto Mallmann
- Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Brazil
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Blanch GP, de Pascual-Teresa S, Ruiz Del Castillo ML. Study on the phenolic composition and antioxidant properties of white-, yellow-, and black-corn (Zea mays L.) foodstuffs. J Sci Food Agric 2023; 103:6263-6271. [PMID: 37160731 DOI: 10.1002/jsfa.12697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 01/19/2023] [Accepted: 05/06/2023] [Indexed: 05/11/2023]
Abstract
BACKGROUND Black corn possesses potent antioxidants, but these are mostly lost during processing. In this study we evaluated the antioxidant content of two different black ('Millo Corvo') corn-based products (i.e. tortillas and cookies) subject to moderate processing. A parallel study on white and yellow corns was carried out for comparison. RESULTS Raw 'Millo Corvo' flour exhibited higher contents of phenolic acids, flavonoids, and particularly anthocyanins than white and yellow flours did. Phenolic acids decreased in cookies but did not in tortillas; flavonoids did not exhibit a clear tendency, and anthocyanins were always preserved. Antioxidant activity (AA) obtained for 'Millo Corvo' samples was twice as high as the value measured in white and yellow corns in terms of 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity. The difference in AA was even more remarkable in terms of photochemiluminiscence antiradical activity. The conditions used during the cookie-making process enabled the natural antioxidant characteristics of 'Millo Corvo' to be preserved. However, the conditions applied to prepare tortillas resulted in major losses. CONCLUSIONS The initial phenolics, in particular anthocyanins, and AA of 'Millo Corvo' flour can be maintained during processing as long as the conditions applied are 183 °C for 20 min in the absence of a high water content. Millo corvo products possess improved antioxidant characteristics compared with those from white and yellow corns. Millo corvo is a promising black corn type to prepare health-promoting corn-based foodstuffs. © 2023 Society of Chemical Industry.
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Malhotra B, Sood A, Malhotra P, Bhadada S. POEMS syndrome: an unusual cause of exuberant callus formation. BMJ Case Rep 2023; 16:e252891. [PMID: 37699737 PMCID: PMC10503389 DOI: 10.1136/bcr-2022-252891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023] Open
Abstract
Several growth factors are expressed in distinct temporal and spatial patterns during fracture repair. Together, they lead to angiogenesis-osteogenesis coupling and hence bone healing by callus formation. Of these growth factors, vascular endothelial growth factor is of particular interest because of its ability to induce neovascularisation (angiogenesis) and osteoclast invasion in soft callus. Hyperplastic callus can be seen in metabolic bone disease, endocrine disease and in patients with traumatic brain injury, but has not been described so far in polyneuropathy, organomegaly, endocrinopathy, M-protein, skin changes (POEMS) syndrome. This report is a case of POEMS syndrome with unusual presentation in the form of exuberant callus formation at fracture sites.
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Affiliation(s)
- Bhanu Malhotra
- Endocrinology, PGIMER, Chandigarh, Haryana and Punjab, India
| | - Ashwini Sood
- Nuclear medicine, PGIMER, Chandigarh, Haryana and Punjab, India
| | - Pankaj Malhotra
- Hematology, Internal Medicine, PGIMER, Chandigarh, Haryana and Punjab, India
| | - Sanjay Bhadada
- Endocrinology, PGIMER, Chandigarh, Haryana and Punjab, India
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Xu C, Guo H, Wang Z, Chen Y. Development and comparative analysis of initiation ability in large-scale Heuchera propagation using tissue culture versus cuttings. Sci Rep 2023; 13:14785. [PMID: 37679496 PMCID: PMC10484989 DOI: 10.1038/s41598-023-42001-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 09/04/2023] [Indexed: 09/09/2023] Open
Abstract
The Heuchera genus, a member of the Saxifragaceae family, encompasses a wide array of varieties and hybrids, serving both traditional medicinal and ornamental purposes. However, a significant knowledge gap persists in achieving efficient mass propagation of diverse Heuchera cultivars creating a substantial market void. To address this, our study focuses on expedited seedling regeneration by investigating leaf cutting and tissue culture techniques to offer novel insights to cultivators. Herein, we successfully rooted thirteen distinct cultivars from the Heuchera and Heucherella (Heuchera × Tiarella) genera through cutting. Moreover, in vitro culture experiments led to the successful induction of calli and shoots from petiole samples. Notably, variations in measured parameters were observed across cultivars in both cutting and tissue culture methodologies. When petiole explants were exposed to cytokinin 6-benzylaminopurine (BA) at concentrations of 0.5, 1.0, and 2.0 mg/L along with auxin α-naphthaleneacetic acid (NAA) at 0.5 mg/L, shoots were produced either directly or indirectly during the primary culture. Exposure to darkness and the application of 2,4-dichlorophenoxyacetic acid (2,4-D) did not promote shoot formation but were beneficial for callus stimulation. Interestingly, a negative correlation was observed between the ease of initiating cutting recovery and inducting tissue culture regeneration, suggesting that cultivars that easily regenerate through cutting might encounter difficulties during induction by tissue culture. In light of these findings, we devised a streamlined and effective protocol for rapid Heuchera propagation. This protocol involves micropropagation, directly acquiring adventitious shoots from primary cultures supplemented by cutting-based propagation methods.
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Affiliation(s)
- Chan Xu
- Institute of Vegetables and Flowers, Chongqing Academy of Agricultural Sciences, Chongqing, 400000, China
| | - Hang Guo
- Institute of Vegetables and Flowers, Chongqing Academy of Agricultural Sciences, Chongqing, 400000, China
| | - Zhijing Wang
- Institute of Vegetables and Flowers, Chongqing Academy of Agricultural Sciences, Chongqing, 400000, China
| | - Yuan Chen
- Institute of Vegetables and Flowers, Chongqing Academy of Agricultural Sciences, Chongqing, 400000, China.
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Nakamura A, Yano T, Mitsuda N, Furubayashi M, Ito S, Sugano SS, Terakawa T. The sonication-assisted whisker method enables CRISPR-Cas9 ribonucleoprotein delivery to induce genome editing in rice. Sci Rep 2023; 13:14205. [PMID: 37679413 PMCID: PMC10484913 DOI: 10.1038/s41598-023-40433-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 08/10/2023] [Indexed: 09/09/2023] Open
Abstract
CRISPR/Cas9-based genome editing represents an unprecedented potential for plant breeding. Unlike animal cells, plant cells contain a rigid cell wall, genome editing tool delivery into plant cells is thus challenging. In particular, the delivery of the Cas9-gRNA ribonucleoprotein (RNP) into plant cells is desired since the transgene insertion into the genome should be avoided for industrial applications in plants. In this study, we present a novel RNP delivery approach in rice. We applied the sonication-assisted whisker method, conventionally developed for DNA delivery in plants, for RNP delivery in rice. Combined with marker gene delivery, we successfully isolated OsLCYβ genome-edited lines generated by RNPs. The calli and regenerated shoot of the OsLCYβ mutant showed abnormal carotenoid accumulation. In addition, we also detected, although at a low frequency, genome editing events in rice calli cells by RNP delivery using the sonication-assisted whisker method without any additional. Therefore, the sonication-assisted whisker method could be an attractive way to create RNP-based genome-edited lines in plants.
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Affiliation(s)
- Akiyoshi Nakamura
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, Japan
| | - Tsubasa Yano
- Inplanta Innovations Inc., 4-5-11, Namamugi, Tsurumi-ku, Yokohama, Japan
| | - Nobutaka Mitsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, Japan
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Japan
| | - Maiko Furubayashi
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Japan
| | | | - Shigeo S Sugano
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, Japan.
| | - Teruhiko Terakawa
- Inplanta Innovations Inc., 4-5-11, Namamugi, Tsurumi-ku, Yokohama, Japan.
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Koch HJ, Akelyte G. Verhornung am Fuß: Ein Warnzeichen? MMW Fortschr Med 2023; 165:9. [PMID: 37710090 DOI: 10.1007/s15006-023-2764-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Affiliation(s)
- Horst J Koch
- Heinrich-Braun-Klinikum Zwickau, Klinik für Psychiatrie und Psychotherapie, Karl-Keil-Str. 35, 08060, Zwickau, Deutschland
| | - Giedre Akelyte
- Heinrich-Braun-Klinikum Zwickau, Klinik fürPsychiatrie undPsychotherapie, Karl-Keil-Str. 35, 08060, Zwickau, Deutschland
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11
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Everett VS, Drabick DAG. Community Violence Exposure and Generalized Anxiety Symptoms: Do Callous-Unemotional Behaviors Moderate this Relation Among Urban Youth? Res Child Adolesc Psychopathol 2023; 51:87-102. [PMID: 36306004 DOI: 10.1007/s10802-022-00973-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 04/19/2022] [Accepted: 08/23/2022] [Indexed: 11/07/2022]
Abstract
Community violence exposure (CVE; i.e., direct victimization and witnessed violence) is a major public health concern among youth who reside in low income, urban neighborhoods, who tend to experience CVE chronically and disproportionately. Frequent CVE is associated with generalized anxiety disorder (GAD) symptoms, such as persistent or excessive worry and difficulty concentrating. However, not all youth experiencing CVE exhibit such symptoms. One understudied factor that may moderate this relation is callous-unemotional (CU) behaviors (e.g., behaviors consistent with lack of guilt, low levels of empathy). CU behaviors are associated with lower levels of responsiveness to contextual processes; as such, CU behaviors may be associated with lower levels of GAD symptoms in the context of CVE. However, little research considers CU behaviors and GAD symptoms concurrently. To address this gap, the present study examined associations among witnessed and direct CVE, CU behaviors, and GAD symptoms among low-income, urban youth (N = 104, 50% male, Mage = 9.93 ± 1.22 years old, 95% African-American/Black). Multiple regression analyses indicated teacher-reported CU behaviors moderated the relations between CVE and caregiver-reported GAD symptoms. Post-hoc probing revealed that among youth with higher levels of CVE, higher levels of CU behaviors were associated with elevated GAD symptoms compared to their peers with lower levels of CU behaviors. Youth with lower levels of CU behaviors evidenced moderate levels of GAD symptoms regardless of their levels of CVE. Thus, low-income, urban youth who experience elevated levels of CVE may be at increased risk for co-occurring GAD and CU symptoms.
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Affiliation(s)
- Valerie S Everett
- Department of Psychology, Temple University, Weiss Hall 1701 N 13th Street, 19122-6011, Philadelphia, PA, USA.
| | - Deborah A G Drabick
- Department of Psychology, Temple University, Weiss Hall 1701 N 13th Street, 19122-6011, Philadelphia, PA, USA
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Mukami A, Juma BS, Mweu C, Ngugi M, Oduor R, Mbinda WM. Plant regeneration from leaf mesophyll derived protoplasts of cassava (Manihot esculenta Crantz). PLoS One 2022; 17:e0278717. [PMID: 36454974 PMCID: PMC9714804 DOI: 10.1371/journal.pone.0278717] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 11/22/2022] [Indexed: 12/05/2022] Open
Abstract
A high yield of isolated protoplast and reliable regeneration system are prerequisite for successful somatic hybridization and genome editing research. However, reproducible plant regeneration from protoplasts remains a bottleneck for many crops, including cassava. We evaluated several factors that influence isolation of viable protoplasts form leaf mesophyll, induction of embryogenic calli, and regeneration of plants in three cassava cultivars; Muchericheri, TMS60444 and Karibuni. A relatively higher protoplast yield was obtained with enzyme mixture containing 5 g/L Macerozyme and 10 g/L cellulase. Muchericheri recorded relatively higher protoplast yield of 20.50±0.50×106 whereas TMS60444 (10.25±0.25×106) had the least protoplast yield in 10 g/L cellulase and 4 g/L cellulase. Freshly isolated protoplast cells were plated on callus induction medium (CIM) solid medium containing MS basal salt, 60 g/L D-glucose, 30 g/L sucrose, B5 vitamins, 100 mg/L myo-inositol, 0.5 mg/L copper sulphate, 100 mg/L casein hydrolysate, 4.55 g/L mannitol, 0.1 g/L MES, 10 mg/L picloram and 3 g/L gelrite to induce protoplast growth and development. The three cultivars reached colony formation but no further development was observed in this culture method. Protoplast growth and development was further evaluated in suspension culture using varying cell densities (1, 2 and 3× 105 p/mL). Development with highest number of minicalli was observed in cell density of 3× 105 p/mL. Minicalli obtained were cultured on CIM supplemented with 10mg/L picloram. Callus induction was observed in all cell densities with the cultivars. Highest somatic embryogenesis was observed in 2× 105 p/ml while no somatic embryogenesis was observed in cell density of 1×105 p/mL. Somatic embryos were matured in EMM medium supplemented with 1 mg/L BAP, 0.02 mg/L NAA and 1.5 mg/L GA3 then germinated in hormone free medium for plant regeneration. This protocol which used simple mixture of commercial enzymes is highly reproducible and can be applied in biotechnology research on cassava.
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Affiliation(s)
- Asunta Mukami
- Department of Life Sciences, South Eastern Kenya University, Kitui, Kenya
| | - Bicko Steve Juma
- Institute for Biotechnology Research, Jomo Kenyatta University of Agriculture Technology, Nairobi, Kenya
| | - Cecilia Mweu
- Institute for Biotechnology Research, Jomo Kenyatta University of Agriculture Technology, Nairobi, Kenya
| | - Mathew Ngugi
- Department of Biochemistry, Microbiology and Biotechnology, Kenyatta University, Nairobi, Kenya
| | - Richard Oduor
- Department of Biochemistry, Microbiology and Biotechnology, Kenyatta University, Nairobi, Kenya
| | - Wilton Mwema Mbinda
- Department of Biochemistry and Biotechnology, Pwani University, Kilifi, Kenya
- Pwani University Biosciences Research Centre (PUBReC), Pwani University, Kilifi, Kenya
- * E-mail: ,
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Qin Q, Oe M, Ohashi Y, Shimojima Y, Imafuku M, Dai M, Nakagami G, Yamauchi T, Yeo S, Sanada H. Factors Associated with the Local Increase of Skin Temperature, 'Hotspot,' of Callus in Diabetic Foot: A Cross-Sectional Study. J Diabetes Sci Technol 2022; 16:1174-1182. [PMID: 34013766 PMCID: PMC9445328 DOI: 10.1177/19322968211011181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
BACKGROUND Increased local skin temperature (hotspot) on a callus site as detected by thermography is a well-known precursor of diabetic foot ulcers. This study aimed to determine the factors associated with callus hotspots in order to predict the risk of callus hotspots and then provide information for specific interventions. METHODS In this cross-sectional study, 1,007 patients' data from a diabetic foot prevention clinic between April 2008 and March 2020 were used. Data regarding patients' characteristics, foot calluses, and callus hotspots were collected and analyzed. Callus and callus hotspot were confirmed from foot photos and thermographs, respectively. A callus hotspot was defined as a relative increase in temperature compared to the skin surrounding the callus on the thermograph. Plantar pressure was measured with a pressure distribution measurement system. A generalized linear mixed model was used to identify the factors associated with callus hotspots. RESULTS Among the 2,014 feet, 28.5% had calluses, and 18.5% of feet with calluses had callus hotspots. The factors associated with callus hotspots were number of calluses (Adjusted odds ratio (aOR): 1.540, P = .003), static forefoot peak plantar pressure (SFPPP) (aOR: 1.008, P = .001), and body mass index (aOR: 0.912, P = .029). CONCLUSIONS Patients with a higher SFPPP were more likely to have callus hotspots suggesting that SFPPP might contribute to callus inflammation. SFPPP has the potential to be a useful predictor of callus hotspots in people with diabetes and at the same time provide information for off-loading interventions to prevent callus hotspots.
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Affiliation(s)
- Qi Qin
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Makoto Oe
- Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Ishikawa, Japan
| | - Yumiko Ohashi
- Nursing Department, The University of Tokyo Hospital, Tokyo, Japan
| | - Yuko Shimojima
- Nursing Department, The University of Tokyo Hospital, Tokyo, Japan
| | - Mikie Imafuku
- Nursing Department, The University of Tokyo Hospital, Tokyo, Japan
| | - Misako Dai
- Department of Skincare Science, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Gojiro Nakagami
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Global Nursing Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Toshimasa Yamauchi
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - SeonAe Yeo
- School of Nursing, University of North Carolina, Chapel Hill, NC, USA
| | - Hiromi Sanada
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Global Nursing Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Hiromi Sanada, PhD, RN, CWOCN, FAAN, Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
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Kaile K, Mahadevan J, Leiva K, Khandavilli D, Narayanan S, Muthukrishnan V, Wu W, Mohan V, Godavarty A. Tissue Oxygenation Measurements to Aid Scalpel Debridement Removal in Patients With Diabetes. J Diabetes Sci Technol 2022; 16:460-469. [PMID: 33615851 PMCID: PMC8861797 DOI: 10.1177/1932296821992050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND Callus formation in the diabetic foot increases the risk of ulcer onset. It is standard procedure to remove these dead tissue layers to reduce rising pressures. In a surgical procedure known as scalpel debridement, or chiropody the callus tissue is removed up to the epidermal layer. Factors may influence the outcome of this surgical process such as clinician inexperience. In an effort to standardize the debridement process, tissue oxygenation (TO) measurements are obtained before and after to study the effect of debridement on callus tissue. METHODS Fifteen debridement cases were analyzed using near infrared (NIR) imaging to study changes in TO. The NIR-based device used in this study estimates effective changes in TO in terms of oxy-, deoxy-, total hemoglobin, and oxygen saturation. Weber contrasts between callus tissue and the surrounding normal tissue were compared following debridement for all TO parameters. In a secondary analysis, callus tissue was segmented into quadrants and a percent of significance (in terms of total TO change) was calculated using a t-test. RESULTS Results show majority of cases displayed greater than 80% as the significant change in TO following debridement, except in cases with the presence of blood clot (a common precursor for ulceration). In cases where incomplete debridement was suspected, a significant change in TO was still observed. CONCLUSIONS With extensive systematic studies in the future, NIR imaging technique to measure changes in TO may be implemented as a low-cost hand-held imaging device useful for objectively assessing the effectiveness of the scalpel debridement process.
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Affiliation(s)
- Kacie Kaile
- Optical Imaging Laboratory, Department
of Biomedical Engineering, Florida International University, Miami, FL, USA
| | - Jagadeesh Mahadevan
- Optical Imaging Laboratory, Department
of Biomedical Engineering, Florida International University, Miami, FL, USA
| | - Kevin Leiva
- Optical Imaging Laboratory, Department
of Biomedical Engineering, Florida International University, Miami, FL, USA
| | - Dinesh Khandavilli
- Optical Imaging Laboratory, Department
of Biomedical Engineering, Florida International University, Miami, FL, USA
| | | | | | - Wensong Wu
- Department of Mathematics and
Statistics, Florida International University, Miami, FL, USA
| | | | - Anuradha Godavarty
- Optical Imaging Laboratory, Department
of Biomedical Engineering, Florida International University, Miami, FL, USA
- Anuradha Godavarty, PhD, Optical Imaging
Laboratory, Department of Biomedical Engineering, Florida International
University, 10555 W. Flagler St., EC 2675, Miami FL 33174, USA.
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Yoshida T, Kim WC, Oka Y, Nakase M, Nishida A, Fujiwara H, Kubo T. Monitoring of Callus Maturation and Measurement of Resistance Rates Using Bioelectrical Impedance for Patients Treated With an External Fixator. Orthopedics 2018; 41:54-58. [PMID: 29257188 DOI: 10.3928/01477447-20171213-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 10/31/2017] [Indexed: 02/03/2023]
Abstract
Evaluation of callus maturation and the decision to remove an external fixator depend on radiographic and clinical findings, which are subjective. Callus fracture or recurrent deformity may occur after premature removal of a fixator. The authors applied a technique to measure bioelectrical impedance to assess callus maturation. This study included 27 limbs that underwent deformity correction or callus distraction using a fixator. Mean patient age at the time of surgery was 17.2 years. Overall impedance during callus maturation was measured from after completion of correction or distraction to removal of the fixator. Temporal changes in impedance values were measured, and maximum and final values were compared with initial values. The resistance rates were compared by age (<15 or ≥15 years), correction site (femur or tibia), and treatment method (noncontact or contact). Mean overall impedance increased gradually. Compared with initial values, maximum and final impedance values were 1.21 times and 1.15 times higher, respectively. Resistance rates by age, correction site, and treatment method were significantly higher in patients 15 years and older, in the tibia, and in the contact group, respectively. Overall impedance tended to increase during callus maturation but varied among patients. Therefore, resistance rates were calculated to classify differences for individual patients. Age and treatment method were important predictors of resistance rates. These data by age, correction site, and treatment method, which assume overall impedance from after completion of correction or distraction, can serve as a useful index to determine when a fixator should be removed. [Orthopedics. 2018; 41(1):54-58.].
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Roekenes J, Strømmen M, Kulseng B, Martins C. The Impact of Feet Callosities, Arm Posture, and Usage of Electrolyte Wipes on Body Composition by Bioelectrical Impedance Analysis in Morbidly Obese Adults. Obes Facts 2015; 8:364-72. [PMID: 26584161 PMCID: PMC5644794 DOI: 10.1159/000442033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 10/08/2015] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE This study evaluated the impact of feet callosities, arm posture, and use of electrolyte wipes on body composition measurements by bioelectrical impedance analysis (BIA) in morbidly obese adults. METHODS 36 morbidly obese patients (13 males, aged 28-70 years, BMI 41.6 ± 4.3 kg/m2) with moderate/severe feet callosities participated in this study. Body composition (percent body fat (%BF)) was measured while fasting using multi-frequency BIA (InBody 720®), before and after removal of callosities, with and without InBody® electrolyte wipes and custom-built auxiliary pads (to assess arm posture impact). Results from BIA were compared to air displacement plethysmography (ADP, BodPod®). RESULTS Median %BF was significantly higher with auxiliary pads than without (50.1 (interquartile range 8.2) vs. 49.3 (interquartile range 9.1); p < 0.001), while no differences were found with callosity removal (49.3 (interquartile range 9.1) vs. 50.0 (interquartile range 7.9); NS) or use of wipes (49.6 (interquartile range 8.5) vs. 49.3 (interquartile range 9.1); NS). No differences in %BF were found between BIA and ADP (49.1 (IQR: 8.9) vs. 49.3 (IQR: 9.1); NS). CONCLUSION Arm posture has a significant impact on %BF assessed by BIA, contrary to the presence of feet callosities and use of electrolyte wipes. Arm posture standardization during BIA for body composition assessment is, therefore, recommended.
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Affiliation(s)
- Jessica Roekenes
- Department of Public Health and General Practice, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Obesity Research Group, Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Magnus Strømmen
- Center for Obesity Research, Department of Surgery, St. Olavs Hospital – Trondheim University Hospital, Trondheim, Norway
- Department of Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway
| | - Bård Kulseng
- Obesity Research Group, Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Center for Obesity Research, Department of Surgery, St. Olavs Hospital – Trondheim University Hospital, Trondheim, Norway
| | - Catia Martins
- Obesity Research Group, Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Center for Obesity Research, Department of Surgery, St. Olavs Hospital – Trondheim University Hospital, Trondheim, Norway
- *Dr. Catia Martins, Institutt for Kreftforskning og molekylær medisin, Medisinsk teknisk forskningssenter, Olav Kyrres gt. 9, 7489 Trondheim, Norway
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17
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Affiliation(s)
- Berry Juliandi
- Division of Animal Biosystematic and Ecology, Department of Biology, Bogor Agricultural University, Bogor, Indonesia.
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18
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Apasheva LM, Lobanov AV, Komissarov GG. Effect of alternating electromagnetic field on early stages of plant development. DOKL BIOCHEM BIOPHYS 2006; 406:1-3. [PMID: 16583995 DOI: 10.1134/s1607672906010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- L M Apasheva
- Semenov Institute of Chemical Physics, Russian Academy of Sciences, iul. Kosygina 4, Moscow, 117977 Russia
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Abstract
The thermotropic phase behavior of lipids extracted either in vivo from inner forearm (SCLE) or plantar callus (PC) was investigated by differential scanning calorimetry and small angle X-ray diffraction. PC composition was chromatographically modified (MPC) by eliminating the more polar lipids in order to evaluate their role. Analysis of composition confirms the potential use of PC as a source of stratum corneum lipids. MPC and SCLE exhibit similar differential scanning calorimetry (DSC) profiles with a main transition around 50 degrees C attributed to the solid-to-liquid phase transition of the ceramides. The absence of a transition around 50 degrees C for PC suggests the possible perturbation of ceramide packing by the significantly high proportion of phospholipids. X-ray data suggest a high miscibility of sebum components in stratum corneum lipids with possible modification of chain packing. The MPC patterns show a lipid phase separation which underscores the role of polar lipids in cholesterol/free fatty acids/sterol esters/ceramides structural cohesion.
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Affiliation(s)
- F Bonté
- Parfums Christian Dior, St. Jean de Braye, France
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20
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Cavanagh PR, Ulbrecht JS, Caputo GM. Biomechanical aspects of diabetic foot disease: aetiology, treatment, and prevention. Diabet Med 1996; 13 Suppl 1:S17-22. [PMID: 8741823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- P R Cavanagh
- Center for Locomotion Studies, Penn State University, PA 16802, USA
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Abstract
Many of the painful foot problems seen in adults are easily treated. Bunions and bunionettes often respond to a change to wide, soft-toed shoes or sandals and the temporary use of a mild anti-inflammatory agent. Initial treatment of plantar keratoses is trimming and use of cushioning shoe inserts. Diffuse keratoses may require reconstructive surgery if metatarsal deformity is the cause. Seed corns and soft corns respond to trimming, and alleviation of pressure with padding and wearing of open-toed shoes is beneficial in these lesions as well as in hard corns. Surgical resection of any underlying exostosis may be required for hard or soft corns or "pump bumps," which are caused by pressure from the shoe's heel. In all cases, patients should be advised to change to shoes that provide plenty of room in the toe box and that minimize friction on painful areas.
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Abstract
The effectiveness of ammonia treatment in reducing the chronic toxicity of aflatoxin-contaminated corn was determined. Fischer 344 rats were fed semi-purified rations containing 20% w/w corn that was either free of aflatoxin or naturally contaminated with 880 micrograms/kg total aflatoxin and was either treated with ammonia gas or was not treated. Therefore the rats that were fed the aflatoxin-contaminated diet received 176 ppb total aflatoxins. Body weight and food consumption were recorded throughout the study; hematological measurements were made after 87 weeks of feeding; and after 91 weeks the rats were killed and histopathological abnormalities were noted. Signs of chronic toxicosis in rats fed aflatoxin-contaminated corn included increased mortality, decreased hematocrit and hemoglobin levels, elevated serum alkaline phosphatase activities, and a 100% incidence of liver neoplasia. These signs did not occur in rats in the other dietary treatment groups, including those fed ammoniated, aflatoxin-contaminated corn. The results provide further evidence that the atmospheric ammoniation process effectively reduces the toxicity of aflatoxin-contaminated corn.
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23
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Cathcart LM. The painful foot. Prim Care 1977; 4:161-72. [PMID: 140410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The inventive physician may find ways of making releasing cuts or openings with existing shoes to alleviate points of pressure. Many patients will suffer misery of pressure in shoes without giving a thought to cutting them, or opening them to allow for more freedom of movement. Releasing cuts may be made along seams, or between sole and upper with leather inserts to increase shoe size at points of major need for improved fit. Soft shoes may be resorted to. Elasticized material or sandals are preferable to the hard, resistant leather which aggravates so many lesions in our offices. Shoes custom made for disordered feet are very expensive. They may have to be ordered for some feet deformed beyond the capacity for ordinary shoes. Again, unless foot care is convenient and helpful in offsetting pain, the patient will usually not comply. Careful explanation of objectives for present and future is as important here as in any condition treated by family practitioners.
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Kelly R. Dermatoses in geriatric patients. Aust Fam Physician 1977; 6:36, 38-41, 43-4, PASSIM. [PMID: 140650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Geriatric patients, though they may present many of the dermatological problems occurring throughout adult life, show a greater incidence of the degenerative skin changes consequent on sun exposure in the form of collagen degeneration, solar keratoses, keratoacanthoma and skin cancer. The benign, precancerous and malignant skin tumours, the various types of eczema, senile pruritus and certain other conditions will be discussed.
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25
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Jansen GT. Practical therapy for hyperkeratotic skin lesions. Geriatrics (Basel) 1975; 30:71-4, 79-80. [PMID: 1116694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Levy LA. The natural history of podiatric disorders--establishing priorities for our profession and its teaching institutions. J Am Podiatry Assoc 1973; 63:466-70. [PMID: 4731299 DOI: 10.7547/87507315-63-9-466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Ruding R. [Corns, warts]. Ned Tijdschr Geneeskd 1972; 116:523-4. [PMID: 5024879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Johnson HD. Great corn mystery. Lancet 1970; 2:524. [PMID: 4194970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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32
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Cozen L. Disorders of the toes. Med Times 1970; 98:141-6. [PMID: 5446119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Robin GM. Atypical callus. A case report. J Am Podiatry Assoc 1970; 60:212-3. [PMID: 5445383 DOI: 10.7547/87507315-60-5-212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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34
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Terlep H. [The sick leg from the viewpoint of the orthopedist]. Z Haut Geschlechtskr 1969; 44:693-8. [PMID: 5382937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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35
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Rakow RB, Friedman SA. The significance of trophic foot changes in the aged. Geriatrics (Basel) 1969; 24:134-45. [PMID: 5769663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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Simeray A. [Voluminous callosity of the scalp in an 85-year-old woman]. Lyon Med 1969; 221:964. [PMID: 5398701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Crawford JA. Flat feet, plantar warts and corns. J Indiana State Med Assoc 1967; 60:1376-8. [PMID: 6066067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Schwarz E. [Clinical chemistry analysis of human skin surface]. Z Klin Chem Klin Biochem 1967; 5:247-51. [PMID: 4248139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Weigl E. [Importance of padding of the finger knuckle ("knuckle pads" for the rheumatological consultation]. Dtsch Gesundheitsw 1967; 22:740-2. [PMID: 5587082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Wikler SJ. Gross acquired foot defects in industrial workers. J Occup Med 1966; 8:629-36. [PMID: 5928235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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42
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Ronchese F. Knuckle pads and similar-looking disorders. G Ital Dermatol Minerva Dermatol 1966; 107:1227-35. [PMID: 6014646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Lapidus PW. Orthopaedic skin lesions of the soles and the toes. Calluses, corns, plantar warts, keratomas, neurovascular growths, onychomas. Clin Orthop Relat Res 1966; 45:87-100. [PMID: 5937377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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44
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45
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Higuchi T, Tillman WJ. Stress-relaxation of stretched callus strips. Influence of various solvent and solution environment on mechanoelastic properties of cornified epithelium. Arch Environ Health 1965; 11:508-21. [PMID: 5837403 DOI: 10.1080/00039896.1965.10664251] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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47
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48
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LANHAM RH. THE MODIFIED JONES SUSPENSION. A PRELIMINARY REPORT. J Am Podiatry Assoc 1965; 55:194-7. [PMID: 14266490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
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49
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COZEN L. FOOT DISABILITIES IN OFFICE PRACTICE. Ind Med Surg 1965; 34:229-33. [PMID: 14279050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
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50
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COVENTRY MB. RESECTION OF THE METATARSAL HEADS TO RELIEVE PAIN AND DEFORMITY. Mayo Clin Proc 1965; 40:240-7. [PMID: 14278303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
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