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Shimizu T, Suzuki K, Inui M. A mycofactocin-associated dehydrogenase is essential for ethylene glycol metabolism by Rhodococcus jostii RHA1. Appl Microbiol Biotechnol 2024; 108:58. [PMID: 38175243 DOI: 10.1007/s00253-023-12966-7] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 11/01/2023] [Accepted: 11/13/2023] [Indexed: 01/05/2024]
Abstract
Ethylene glycol is an industrially important diol in many manufacturing processes and a building block of polymers, such as poly(ethylene terephthalate). In this study, we found that a mycolic acid-containing bacterium Rhodococcus jostii RHA1 can grow with ethylene glycol as a sole source of carbon and energy. Deletion of a putative glycolate dehydrogenase gene (RHA1_ro03227) abolished growth with ethylene glycol, indicating that ethylene glycol is assimilated via glycolate in R. jostii RHA1. Transcriptome sequencing and gene deletion analyses revealed that a gene homologous to mycofactocin (MFT)-associated dehydrogenase (RHA1_ro06057), hereafter referred to as EgaA, is essential for ethylene glycol assimilation. Furthermore, egaA deletion also negatively affected the utilization of ethanol, 1-propanol, propylene glycol, and 1-butanol, suggesting that EgaA is involved in the utilization of various alcohols in R. jostii RHA1. Deletion of MFT biosynthetic genes abolished growth with ethylene glycol, indicating that MFT is the physiological electron acceptor of EgaA. Further genetic studies revealed that a putative aldehyde dehydrogenase (RHA1_ro06081) is a major aldehyde dehydrogenase in ethylene glycol metabolism by R. jostii RHA1. KEY POINTS: • Rhodococcus jostii RHA1 can assimilate ethylene glycol via glycolate • A mycofactocin-associated dehydrogenase is involved in the oxidation of ethylene glycol • An aldehyde dehydrogenase gene is important for the ethylene glycol assimilation.
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Affiliation(s)
- Tetsu Shimizu
- Research Institute of Innovative Technology for the Earth, 9-2, Kizugawadai, Kizugawa-Shi, Kyoto, 619-0292, Japan
| | - Kai Suzuki
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, 630-0192, Japan
| | - Masayuki Inui
- Research Institute of Innovative Technology for the Earth, 9-2, Kizugawadai, Kizugawa-Shi, Kyoto, 619-0292, Japan.
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, 630-0192, Japan.
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Moghimipour E, Gorji A, Yaghoobi R, Salimi A, Latifi M, Aghakouchakzadeh M, Handali S. Clinical evaluation of liposome-based gel formulation containing glycolic acid for the treatment of photodamaged skin. J Drug Target 2024; 32:74-79. [PMID: 38009711 DOI: 10.1080/1061186x.2023.2288998] [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: 06/05/2023] [Accepted: 11/20/2023] [Indexed: 11/29/2023]
Abstract
Background: Long contact of UV causes skin damage. Glycolic acid (GA) as an alpha hydroxy acid is used to treat photodamaged skin. However, GA leads to side effects including; burning, erythema and peeling.Purpose: The aim of this study was to develop a controlled delivery systems loading GA in order to increasing its efficacy and lowering its side effects.Methods: Liposomes were evaluated for encapsulation efficiency, size and morphology. Optimized formulation was dispersed in HPMC gel bases and drug release kinetics were also studied. Clinical efficacy and safety of GA-loaded liposomal gel and GA gel formulation were evaluated in patients with photodamaged skin.Results: The EE% and average particle size of liposomes were 64 ±2.1 % and 317±3.6 nm, respectively. SEM image showed that liposomes were spherical in shape. In vitro release kinetics of GA from both formulations followed Weibull model. Clinical evaluation revealed that GA-loaded liposomal gel was more effective than GA gel formulation. Treatment with GA-loaded liposomal gel resulted in a statistically significant reduction in the scores of hyperpigmentation, fine wrinkling and lentigines. Moreover, liposomal gel formulation was able to minimize side effects of GA.Conclusion: According to the obtained results, the liposome-based gel formulation can be used as potential drug delivery system to enhance permeation of GA through skin layers and also reduce its side effects.
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Affiliation(s)
- Eskandar Moghimipour
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ali Gorji
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Reza Yaghoobi
- Department of Dermatology, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Anayatollah Salimi
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mahmoud Latifi
- Statistics and Epidemiology Department, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | | | - Somayeh Handali
- Medical Biomaterials Research Center (MBRC), Tehran University of Medical Sciences, Tehran, Iran
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Hayee R, Iqtedar M, Albekairi NA, Alshammari A, Makhdoom MA, Islam M, Ahmed N, Rasool MF, Li C, Saeed H. Levofloxacin loaded chitosan and poly-lactic-co-glycolic acid nano-particles against resistant bacteria: Synthesis, characterization and antibacterial activity. J Infect Public Health 2024; 17:906-917. [PMID: 38569270 DOI: 10.1016/j.jiph.2024.03.023] [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: 01/02/2024] [Revised: 03/18/2024] [Accepted: 03/19/2024] [Indexed: 04/05/2024] Open
Abstract
BACKGROUND With the global increase in antibacterial resistance, the challenge faced by developing countries is to utilize the available antibiotics, alone or in combination, against resistant bacterial strains. We aimed to encapsulate the levofloxacin (LVX) into polymeric nanoparticles using biodegradable polymers i.e. Chitosan and PLGA, estimating their physicochemical characteristics followed by functional assessment as nanocarriers of levofloxacin against the different resistant strains of bacteria isolated from biological samples collected from tertiary care hospital in Lahore, Pakistan. METHODS LVX-NPs were synthesized using ion gelation and double emulsion solvent-evaporation method employing chitosan (CS) and poly-lactic-co-glycolic acid (PLGA), characterized via FTIR, XRD, SEM, and invitro drug release studies, while antibacterial activity was assessed using Kirby-Bauer disc-diffusion method. RESULTS Data revealed that the levofloxacin-loaded chitosan nanoparticles showed entrapment efficiency of 57.14% ± 0.03 (CS-I), 77.30% ± 0.08(CS-II) and 87.47% ± 0.08 (CS-III). The drug content, particle size, and polydispersity index of CS-I were 52.22% ± 0.2, 559 nm ± 31 nm, and 0.030, respectively, whereas it was 66.86% ± 0.17, 595 nm ± 52.3 nm and 0.057, respectively for CS-II and 82.65% ± 0.36, 758 nm ± 24 nm and 0.1, respectively for CS-III. The PLGA-levofloxacin nanoparticles showed an entrapment efficiency of 42.80% ± 0.4 (PLGA I) and 23.80% ± 0.4 (PLGA II). The drug content, particle size and polydispersity index of PLGA-I were 86% ± 0.21, 92 nm ± 10 nm, and 0.058, respectively, whereas it was 52.41% ± 0.45, 313 nm ± 32 nm and 0.076, respectively for PLGA-II. The XRD patterns of both polymeric nanoparticles showed an amorphous nature. SEM analysis reflects the circular-shaped agglomerated nanoparticles with PLGA polymer and dense spherical nanoparticles with chitosan polymer. The in-vitro release profile of PLGA-I nanoparticles showed a sustained release of 82% in 120 h and it was 58.40% for CS-III. Both types of polymeric nanoparticles were found to be stable for up to 6 months without losing any major drug content. Among the selected formulations, CS-III and PLGA-I, CS-III had better antibacterial potency against gram+ve and gram-ve bacteria, except for K. pneumonia, yet, PLGA-I demonstrated efficacy against K. pneumonia as per CSLI guidelines. All formulations did not exhibit any signs of hemotoxicity, nonetheless, the CS-NPs tend to bind on the surface of RBCs. CONCLUSION These data suggested that available antibiotics can effectively be utilized as nano-antibiotics against resistant bacterial strains, causing severe infections, for improved antibiotic sensitivity without compromising patient safety.
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Affiliation(s)
- Rabia Hayee
- Department of Pharmaceutics, College of Pharmacy, University of the Punjab, Allama Iqbal Campus, 54000 Lahore, Pakistan.
| | - Mehwish Iqtedar
- Department of Biotechnology, Lahore College for Women University, Jail Road, Lahore, Pakistan.
| | - Norah A Albekairi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Post Box 2455, Riyadh 11451, Saudi Arabia.
| | - Abdulrahman Alshammari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Post Box 2455, Riyadh 11451, Saudi Arabia.
| | | | - Muhammad Islam
- Department of Pharmaceutics, College of Pharmacy, University of the Punjab, Allama Iqbal Campus, 54000 Lahore, Pakistan.
| | - Nadeem Ahmed
- Center of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan.
| | | | - Chen Li
- Dept. of Pathology and Physiopathology, Guangxi Key Laboratory of Tumor Immunology and Microenvironmental Regulation, Guilin Medical University, Guilin, Guangxi, China.
| | - Hamid Saeed
- Department of Pharmaceutics, College of Pharmacy, University of the Punjab, Allama Iqbal Campus, 54000 Lahore, Pakistan.
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Allaeys M, Visscher L, den Hartog FPJ, Dries P, Tanis PJ, Theeuwes HP, Berrevoet F, Eker HH. Strength of small-bites abdominal wall closure using different suturing methods and materials in an experimental animal model. Hernia 2024; 28:527-535. [PMID: 38212505 DOI: 10.1007/s10029-023-02945-2] [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: 09/12/2023] [Accepted: 12/08/2023] [Indexed: 01/13/2024]
Abstract
PURPOSE Using small instead of large bites for laparotomy closure results in lower incidence of incisional hernia, but no consensus exists on which suture material to use. This study aimed to compare five different closure strategies in a standardized experimental setting. METHODS Fifty porcine abdominal walls were arranged into 5 groups: (A) running 2/0 polydioxanone; (B) interlocking 2/0 polydioxanone; (C) running size 0 barbed polydioxanone; (D) running size 0 barbed glycolic acid and trimethylene carbonate; (E) running size 0 suturable polypropylene mesh. The small-bites technique was used for linea alba closure in all. The abdominal walls were divided into a supra- and infra-umbilical half, resulting in 20 specimens per group that were pulled apart in a tensile testing machine. Maximum tensile force and types of suture failure were registered. RESULTS The highest tensile force was measured when using barbed polydioxanone (334.8 N ± 157.0), but differences did not reach statistical significance. Infra-umbilical abdominal walls endured a significantly higher maximum tensile force compared to supra-umbilical (397 N vs 271 N, p < 0.001). Barbed glycolic acid and trimethylene carbonate failed significantly more often (25% vs 0%, p = 0.008). CONCLUSION Based on tensile force, both interlocking and running suture techniques using polydioxanone, and running sutures using barbed polydioxanone or suturable mesh, seem to be suitable for abdominal wall closure. Tensile strength was significantly higher in infra-umbilical abdominal walls compared to supra-umbilical. Barbed glycolic acid and trimethylene carbonate should probably be discouraged for fascial closure, because of increased risk of suture failure.
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Affiliation(s)
- M Allaeys
- Department of General and HPB Surgery and Liver Transplantation, University Hospital Ghent, Ghent, Belgium.
| | - L Visscher
- Department of Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands
- Surgical SkillsLab, Department of Neuroscience and Anatomy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - F P J den Hartog
- Department of Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - P Dries
- Department of General and HPB Surgery and Liver Transplantation, University Hospital Ghent, Ghent, Belgium
| | - P J Tanis
- Department of Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - H P Theeuwes
- Surgical SkillsLab, Department of Neuroscience and Anatomy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Department of Trauma Surgery, Elisabeth-TweeSteden Ziekenhuis, Tilburg, The Netherlands
| | - F Berrevoet
- Department of General and HPB Surgery and Liver Transplantation, University Hospital Ghent, Ghent, Belgium
| | - H H Eker
- Department of General and HPB Surgery and Liver Transplantation, University Hospital Ghent, Ghent, Belgium
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Pino JMV, Silva VF, Campos RMS, Mônico-Neto M, de Araujo KA, Seva DC, Kato MY, Galvão TD, Bitterncourt LRA, Tufik S, Lee KS. Impact of Bariatric Surgery on Circulating Metabolites and Cognitive Performance. Obes Surg 2024; 34:1102-1112. [PMID: 38363496 DOI: 10.1007/s11695-024-07096-6] [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: 11/17/2023] [Revised: 02/05/2024] [Accepted: 02/07/2024] [Indexed: 02/17/2024]
Abstract
INTRODUCTION Bariatric surgery is an effective intervention to reduce obesity and improve associated comorbidities. However, its effects on cognitive function are still the subject of debate. Given that the bioavailability of circulating metabolites can influence brain metabolism and cognitive performance, we aimed to assess the effects of bariatric surgery on plasma metabolic profiles and cognitive performance. METHODS We recruited 26 women undergoing gastric bypass surgery. We conducted anthropometric assessments and collected plasma samples for metabolomic analysis. A set of 4 cognitive tests were used to evaluate cognitive performance. Participants were reevaluated 1 year post-surgery. RESULTS After surgery, attention capacity and executive function were improved, while immediate memory had deteriorated. Regarding metabolic profile, reduction of beta-tocopherol and increase of serine, glutamic acid, butanoic acid, and glycolic acid were observed. To better understand the relationship between cognitive function and metabolites, a cluster analysis was conducted to identify more homogeneous subgroups based on the cognitive performance. We identified cluster 1, which did not show changes in cognitive performance after surgery, and cluster 2, which showed improved attention and executive function, but reduced performance in the immediate memory test. Thus, cluster 2 was more homogeneous group that replicated the results of non-clustered subjects. Analysis of the metabolic profile of cluster 2 confirmed serine, glutamic acid, and glycolic acid as potential metabolites associated with cognitive performance. CONCLUSIONS Metabolites identified in this study have potential for biomarkers and alternative therapeutic target to prevent obesity-related cognitive decline. KEY POINTS • Attention capacity and executive function were improved 12 months post bariatric surgery. • Immediate memory was worsened 12 months post bariatric surgery. • Serine, glutamic acid, and glycolic acid are potential metabolites linked to the alteration of cognitive performance.
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Affiliation(s)
- Jessica M V Pino
- Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de São Paulo, Edifício de Pesquisa II, Rua Pedro de Toledo, 669, 8º Andar, CEP, São Paulo, 04039-032, Brazil
| | - Vitória F Silva
- Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de São Paulo, Edifício de Pesquisa II, Rua Pedro de Toledo, 669, 8º Andar, CEP, São Paulo, 04039-032, Brazil
| | - Raquel M S Campos
- Post Graduated Program of Interdisciplinary Health Sciences, Universidade Federal de São Paulo, Santos, Brazil
| | - Marcos Mônico-Neto
- Post Graduated Program of Interdisciplinary Health Sciences, Universidade Federal de São Paulo, Santos, Brazil
- BariMais Clinic-Integrated Medicine, São Paulo, Brazil
| | - Kaique A de Araujo
- Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de São Paulo, Edifício de Pesquisa II, Rua Pedro de Toledo, 669, 8º Andar, CEP, São Paulo, 04039-032, Brazil
| | - Danielle C Seva
- Post Graduated Program of Interdisciplinary Health Sciences, Universidade Federal de São Paulo, Santos, Brazil
| | - Melissa Y Kato
- Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de São Paulo, Edifício de Pesquisa II, Rua Pedro de Toledo, 669, 8º Andar, CEP, São Paulo, 04039-032, Brazil
| | | | - Lia R A Bitterncourt
- Department of Psychobiology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Sergio Tufik
- Department of Psychobiology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Kil S Lee
- Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de São Paulo, Edifício de Pesquisa II, Rua Pedro de Toledo, 669, 8º Andar, CEP, São Paulo, 04039-032, Brazil.
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Park H, Kim H, Hwang YJ, Park SH. Poly Lactic-co-Glycolic Acid Absorbable Plate Graft for Secondary Rhinoplasty in Asian Patients with Unilateral Cleft Lip Nose Deformity. Cleft Palate Craniofac J 2024; 61:592-598. [PMID: 36604781 DOI: 10.1177/10556656221148899] [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: 01/07/2023] Open
Abstract
INTRODUCTION In secondary cleft lip and nasal deformity (CLND) correction, structural grafts are commonly used to control the nasal tip and restore the symmetry of the ala. However, the septal cartilage in Asians often weak and small. Biocompatible absorbable materials are alternatives to autologous grafts. This study assessed the surgical outcomes and complications of poly lactic-co-glycolic acid (PLGA) plate grafts in secondary CLND correction. METHODS This study was retrospectively analyzed for patients who underwent secondary rhinoplasty for unilateral CLND correction between March 2015 and November 2020. Using open rhinoplasty, the PLGA plate was grafted as a columellar strut. Clinical photographs taken at the initial (T0) and follow-up visits (T1: short-term, T2: long-term) were analyzed and anthropometric parameters, such as nostril height and width, dome height, and tip height, were measured. RESULTS Twenty-four patients were included in this study. The mean T1 and T2 periods were 1.0 ± 0.4 and 15.5 ± 3.1 months, respectively. The nostril height ratio increased from 0.78 ± 0.12 at T0 to 0.88 ± 0.08 at T1 and 0.86 ± 0.09 at T2 (p < 0.001; Relapse ratio -2.6 ± 6.7%). The tip height ratio increased from 0.60 ± 0.07 (T0) to 0.66 ± 0.05 (T2) (Relapse ratio -3.7 ± 3.0%). CONCLUSIONS The PLGA plate graft provided stable nasal tip projection and alar symmetry without major complications. It can be a good option for patients lacking available septal and concha cartilages or apprehensive of additional scarring.
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Affiliation(s)
- Hojin Park
- Department of Plastic Surgery, Korea University, College of Medicine, Korea University Anam Hospital, Seoul, Korea
| | - Haneul Kim
- Department of Plastic Surgery, Korea University, College of Medicine, Korea University Anam Hospital, Seoul, Korea
| | - Yong-Jae Hwang
- Department of Plastic Surgery, Korea University, College of Medicine, Korea University Anam Hospital, Seoul, Korea
| | - Seung-Ha Park
- Department of Plastic Surgery, Korea University, College of Medicine, Korea University Anam Hospital, Seoul, Korea
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Jiang H, Zhou Y, Zheng D, Cheng Y, Xiang D, Jiang L, Du J. Using anti-PD-L1 antibody conjugated gold nanoshelled poly (Lactic-co-glycolic acid) nanocapsules loaded with doxorubicin: A theranostic agent for ultrasound imaging and photothermal/chemo combination therapy of triple negative breast cancer. J Biomed Mater Res A 2024; 112:402-420. [PMID: 37941485 DOI: 10.1002/jbm.a.37638] [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: 02/05/2023] [Revised: 09/01/2023] [Accepted: 10/19/2023] [Indexed: 11/10/2023]
Abstract
Triple negative breast cancer (TNBC) has the worst prognosis of all breast cancers, and it is difficult to progress through traditional chemotherapy. Therefore, the treatment of TNBC urgently requires agents with effective diagnostic and therapeutic capabilities. In this study, we obtained programmed death-ligand 1 (PD-L1) antibody conjugated gold nanoshelled poly(lactic-co-glycolic acid) (PLGA) nanocapsules (NCs) encapsulating doxorubicin (DOX) (DOX@PLGA@Au-PD-L1 NCs). PLGA NCs encapsulating DOX were prepared by a modified single-emulsion oil-in-water (O/W) solvent evaporation method, and gold nanoshells were formed on the surface by gold seed growth method, which were coupled with PD-L1 antibodies by carbodiimide method. The fabricated DOX@PLGA@Au-PD-L1 NCs exhibited promising contrast enhancement in vitro ultrasound imaging. Furthermore, DOX encapsulated in NCs displayed good pH-responsive and photo-triggered drug release properties. After irradiating 200 μg/mL NCs solution with a laser for 10 min, the solution temperature increased by nearly 23°C, indicating that the NCs had good photothermal conversion ability. The targeting experiments confirmed that the NCs had specific target binding ability to TNBC cells overexpressing PD-L1 molecules. Cell experiments exhibited that the agent significantly reduced the survival rate of TNBC cells through photochemotherapy combination therapy. As a multifunctional diagnostic agent, DOX@PLGA@Au-PD-L1 NCs could be used for ultrasound targeted contrast imaging and photochemotherapy combination therapy of TNBC cells, providing a promising idea for early diagnosis and treatment of TNBC.
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Affiliation(s)
- Hui Jiang
- Department of Ultrasound, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Yingying Zhou
- Department of Ultrasound, Zhabei Central Hospital, Shanghai, P. R. China
| | - Dongdong Zheng
- Department of Ultrasound, Fudan University Shanghai Cancer Center, Shanghai, P. R. China
| | - Yexiazi Cheng
- Department of Ultrasound, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Dacheng Xiang
- College of Chemistry and Materials Science, Shanghai Normal University, Shanghai, P. R. China
| | - Lixin Jiang
- Department of Ultrasound, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Jing Du
- Department of Ultrasound, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
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Andrade PC, Carlos NR, Montalli VAM, Barbosa JA, Basting RT. Influence of etchant type on the shear bond strength of orthodontic brackets to enamel. Gen Dent 2024; 72:55-59. [PMID: 38411486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
The aim of this study was to evaluate the influence of the type of etchant on the shear bond strength (SBS) of metallic brackets to enamel and the Adhesive Remnant Index (ARI) after debonding. A total of 30 mandibular and maxillary premolars were randomly distributed into groups (n = 10) treated with 1 of 3 enamel surface-conditioning agents: 35% phosphoric acid (PA), 35% glycolic acid (GA), or 35% ferulic acid (FA). The designated acid was applied to the buccal enamel surface of the tooth for 20 seconds, and the tooth was then rinsed with distilled water for 20 seconds and air dried for 5 seconds. A metal bracket was bonded to the prepared surface with light-cured orthodontic resin. After 24 hours, the bracket-tooth interface was submitted to SBS testing in a universal testing machine at a speed of 0.5 mm/min. After debonding, the enamel surface was observed under a stereomicroscope (×20 magnification) to determine the ARI. The generalized linear models showed that the PA and GA groups presented significantly higher SBSs than the FA group (P = 0.0003). The ARI was significantly higher in specimens treated with PA than with the other acids (P < 0.05; Kruskal-Wallis and Dunn tests), with a larger quantity of adhesive remaining adhered to the tooth. Both PA and GA are effective for bonding brackets, but GA resulted in a lower percentage of adhesive remnant adhered to the enamel.
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Menon V, Katner SJ, Lee DE, Peterson EJ, Koblinski JE, Farrell NP. Antitumor active trans‑platinum complexes through metabolic stability and enhanced cellular accumulation. J Inorg Biochem 2024; 252:112475. [PMID: 38199050 DOI: 10.1016/j.jinorgbio.2023.112475] [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: 11/06/2023] [Revised: 12/14/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024]
Abstract
Utilizing isoquinoline as a carrier ligand, we have evaluated the reactivity of selected trans‑platinum planar amine (TPA) carboxylate compounds by varying the leaving carboxylate group (acetate, hydroxyacetate, and lactate) in an effort to optimize the cytotoxic and metabolic efficiency. To measure the pharmacological properties of these compounds, a combination of systematic biophysical and biological studies were carried out mainly involving substitution reaction with NAM (N-acetyl-methionine), effects on DNA structural perturbation, cytotoxicity, cellular accumulation, metabolic stability, and cell cycle effects. TPA compounds showed minimal losses in cytotoxic efficacy and outperformed cisplatin after pre-incubation with serum, while displaying a distinct micromolar cytotoxic activity with minimal DNA binding and unaltered cell cycle. Monitoring the TPA compounds with NAM suggests the following trend for the reactivity: hydroxyacetate > lactate > acetate. The same trend was seen for the cytotoxicity in tumor cells and DNA binding, while the rate of drug inactivation/protein binding in cells was not significantly different among these leaving groups. Thus, our results show superior cellular efficacy of TPA compounds and distinct micromolar cytotoxic activities different than cisplatin. Moreover, we found the TPA compounds had prolonged survival and decreased tumor burden compared to the control mice in a relevant human ovarian cancer mouse model with A2780 cells expressing luciferase. Therefore, we propose that further optimization of the basic TPA structure can give further enhanced in vivo activity and may eventually be translated into the development of clinically relevant non-traditional platinum drugs.
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Affiliation(s)
- Vijay Menon
- Massey Cancer Center, Virginia Commonwealth University, VA 23298, USA; Department of Therapeutic Radiology, Yale School of Medicine, New Haven, CT 06520-8040, USA
| | - Samantha J Katner
- Department of Chemistry, Virginia Commonwealth University, VA 23284, USA; Massey Cancer Center, Virginia Commonwealth University, VA 23298, USA; Department of Biochemistry, Chemistry, and Geology, Minnesota State University, Mankato, MN 56001, USA
| | - Daniel E Lee
- Department of Chemistry, Virginia Commonwealth University, VA 23284, USA
| | - Erica J Peterson
- Department of Chemistry, Virginia Commonwealth University, VA 23284, USA; Massey Cancer Center, Virginia Commonwealth University, VA 23298, USA
| | - Jennifer E Koblinski
- Massey Cancer Center, Virginia Commonwealth University, VA 23298, USA; Department of Pathology, Virginia Commonwealth University, VA 23284, USA
| | - Nicholas P Farrell
- Department of Chemistry, Virginia Commonwealth University, VA 23284, USA; Massey Cancer Center, Virginia Commonwealth University, VA 23298, USA.
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Som A, Rosenboom JG, Wehrenberg-Klee E, Chandler A, Ndakwah G, Chen E, Morimoto J, Kim J, Mustafa AR, Marcos-Vidal A, Fintelmann FJ, Basu A, Langer R, Traverso G, Mahmood U. Percutaneous Intratumoral Immunoadjuvant Gel Increases the Abscopal Effect of Cryoablation for Checkpoint Inhibitor Resistant Cancer. Adv Healthc Mater 2024; 13:e2301848. [PMID: 37870153 PMCID: PMC10922912 DOI: 10.1002/adhm.202301848] [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: 06/10/2023] [Revised: 09/30/2023] [Indexed: 10/24/2023]
Abstract
Percutaneous cryoablation is a common clinical therapy for metastatic and primary cancer. There are rare clinical reports of cryoablation inducing regression of distant metastases, known as the "abscopal" effect. Intratumoral immunoadjuvants may be able to augment the abscopal rate of cryoablation, but existing intratumoral therapies suffer from the need for frequent injections and inability to confirm target delivery, leading to poor clinical trial outcomes. To address these shortcomings, an injectable thermoresponsive gel-based controlled release formulation is developed for the FDA-approved Toll-like-receptor 7 (TLR7) agonist imiquimod ("Imigel") that forms a tumor-resident depot upon injection and contains a contrast agent for visualization under computed tomography (CT). The poly-lactic-co-glycolic acid-polyethylene glycol-poly-lactic-co-glycolic acid (PLGA-PEG-PLGA)-based amphiphilic copolymer gel's underlying micellar nature enables high drug concentration and a logarithmic release profile that is additive with the neo-antigen release from cryoablation, requiring only a single injection. Rheological testing demonstrated the thermoresponsive increase in viscosity at body temperature and radio-opacity via microCT. Its ability to significantly augment the abscopal rate of cryoablation is demonstrated in otherwise immunotherapy resistant metastatic tumors in two aggressive colorectal and breast cancer dual tumor models with an all or nothing response, responders generally demonstrating complete regression of bilateral tumors in 90-day survival studies.
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Affiliation(s)
- Avik Som
- Department of Radiology, Division of Interventional Radiology, Massachusetts General Hospital
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology
| | - Jan-Georg Rosenboom
- Department of Radiology, Division of Interventional Radiology, Massachusetts General Hospital
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology
- Department of Chemical Engineering, Massachusetts Institute of Technology
- Department of Medicine, Division of Gastroenterology, Brigham and Women’s Hospital
| | - Eric Wehrenberg-Klee
- Department of Radiology, Division of Interventional Radiology, Massachusetts General Hospital
| | - Alana Chandler
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology
| | - Gabrielle Ndakwah
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology
| | - Eric Chen
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology
| | - Joshua Morimoto
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology
| | - Jonathan Kim
- Department of Radiology, Division of Interventional Radiology, Massachusetts General Hospital
| | - Abdul Rehman Mustafa
- Department of Radiology, Division of Interventional Radiology, Massachusetts General Hospital
| | - Asier Marcos-Vidal
- Department of Radiology, Division of Interventional Radiology, Massachusetts General Hospital
| | - Florian J. Fintelmann
- Department of Radiology, Division of Interventional Radiology, Massachusetts General Hospital
| | - Arijit Basu
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology
| | - Robert Langer
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology
- Department of Chemical Engineering, Massachusetts Institute of Technology
- Department of Mechanical Engineering, Massachusetts Institute of Technology
| | - Giovanni Traverso
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology
- Department of Mechanical Engineering, Massachusetts Institute of Technology
- Department of Medicine, Division of Gastroenterology, Brigham and Women’s Hospital
| | - Umar Mahmood
- Department of Radiology, Division of Interventional Radiology, Massachusetts General Hospital
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11
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Moore NP, Bogaards JJP, Buscher BAP, Wolterbeek APM, Cnubben NHP. Disposition of glycolic acid into the embryo following oral administration of ethylene glycol during placentation in the rat and rabbit. Toxicol Sci 2024; 198:31-39. [PMID: 38175793 DOI: 10.1093/toxsci/kfad135] [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] [Indexed: 01/06/2024] Open
Abstract
In order to evaluate the role of the placenta in the etiology of ethylene glycol (EG) developmental toxicity, the distribution of EG and its main metabolites, glycolic acid (GA) and oxalic acid (OX), into the conceptus was determined at the beginning and completion of placentation in the rat and rabbit. Two groups (n = 28) of timed-pregnant Wistar rats were administered EG (1000 mg/kg bw/day, oral gavage) from gestation day (GD) 6 to either GD 11 or GD 16; similarly, two groups (n = 28) of timed-pregnant New Zealand White rabbits were administered EG from GD 6 to either GD 10 or GD 19. Four animals from each group were sacrificed at 1, 3, 6, 9, 12, 18, or 24 h after the final administration, and maternal blood, extraembryonic fluid, and embryonic tissue were removed for analysis of EG, GA, and OX. The three analytes were predominantly cleared from all compartments in both species within 24 h. Neither EG nor OX preferentially accumulated into the conceptus compartments, compared with the maternal blood, in either species. Critically, GA was preferentially accumulated from the maternal blood only into the rat embryo at GD 11, but not at GD 16 and not into the rabbit embryo at either GD 10 or GD 19. The accumulation of GA into the rat embryo, and its decline over the course of placentation, is discussed in relation to the expression of monocarboxylate transporter isoforms across the syncytiotrophoblast.
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Yu Q, Liu S, Guo R, Chen K, Li Y, Jiang D, Gong S, Yin L, Liu K. Complete Restoration of Hearing Loss and Cochlear Synaptopathy via Minimally Invasive, Single-Dose, and Controllable Middle Ear Delivery of Brain-Derived Neurotrophic Factor-Poly(dl-lactic acid- co-glycolic acid)-Loaded Hydrogel. ACS Nano 2024; 18:6298-6313. [PMID: 38345574 DOI: 10.1021/acsnano.3c11049] [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] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Noise-induced hearing loss (NIHL) often accompanies cochlear synaptopathy, which can be potentially reversed to restore hearing. However, there has been little success in achieving complete recovery of sensorineural deafness using nearly noninvasive middle ear drug delivery before. Here, we present a study demonstrating the efficacy of a middle ear delivery system employing brain-derived neurotrophic factor (BDNF)-poly-(dl-lactic acid-co-glycolic acid) (PLGA)-loaded hydrogel in reversing synaptopathy and restoring hearing function in a mouse model with NIHL. The mouse model achieved using the single noise exposure (NE, 115 dBL, 4 h) exhibited an average 20 dBL elevation of hearing thresholds with intact cochlear hair cells but a loss of ribbon synapses as the primary cause of hearing impairment. We developed a BDNF-PLGA-loaded thermosensitive hydrogel, which was administered via a single controllable injection into the tympanic cavity of noise-exposed mice, allowing its presence in the middle ear for a duration of 2 weeks. This intervention resulted in complete restoration of NIHL at frequencies of click, 4, 8, 16, and 32 kHz. Moreover, the cochlear ribbon synapses exhibited significant recovery, whereas other cochlear components (hair cells and auditory nerves) remained unchanged. Additionally, the cochlea of NE treated mice revealed activation of tropomyosin receptor kinase B (TRKB) signaling upon exposure to BDNF. These findings demonstrate a controllable and minimally invasive therapeutic approach that utilizes a BDNF-PLGA-loaded hydrogel to restore NIHL by specifically repairing cochlear synaptopathy. This tailored middle ear delivery system holds great promise for achieving ideal clinical outcomes in the treatment of NIHL and cochlear synaptopathy.
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Affiliation(s)
- Qianru Yu
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Shengnan Liu
- School of Materials Science and Engineering,Tsinghua University, Beijing 100084, China
| | - Rui Guo
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Kuntao Chen
- School of Materials Science and Engineering,Tsinghua University, Beijing 100084, China
| | - Yang Li
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Dan Jiang
- Hearing Implant Centre, Guy's and St. Thomas NHS Foundation Trust, London SE1 7EH, United Kingdom
- Centre for Craniofacial and Regenerative Biology, King's College London, London SE1 9RT, United Kingdom
| | - Shusheng Gong
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
- Clinical Center for Hearing Loss, Capital Medical University, Beijing 100050, China
| | - Lan Yin
- School of Materials Science and Engineering,Tsinghua University, Beijing 100084, China
| | - Ke Liu
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
- Clinical Center for Hearing Loss, Capital Medical University, Beijing 100050, China
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Manjit M, Kumar M, Jha A, Bharti K, Kumar K, Tiwari P, Tilak R, Singh V, Koch B, Mishra B. Formulation and characterization of polyvinyl alcohol/chitosan composite nanofiber co-loaded with silver nanoparticle & luliconazole encapsulated poly lactic-co-glycolic acid nanoparticle for treatment of diabetic foot ulcer. Int J Biol Macromol 2024; 258:128978. [PMID: 38145692 DOI: 10.1016/j.ijbiomac.2023.128978] [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: 10/08/2023] [Revised: 11/30/2023] [Accepted: 12/20/2023] [Indexed: 12/27/2023]
Abstract
Chronic wounds are prone to fungal infections, possess a significant challenge, and result in substantial mortality. Diabetic wounds infected with Candida strains are extremely common. It can create biofilm at the wound site, which can lead to antibiotic resistance. As a result, developing innovative dressing materials that combat fungal infections while also providing wound healing is a viable strategy to treat infected wounds and address the issue of antibiotic resistance. Present work proposed anti-infective dressing material for the treatment of fungal strains Candida-infected diabetic foot ulcer (DFU). The nanofiber was fabricated using polyvinyl Alcohol/chitosan as hydrogel base and co-loaded with silver nanoparticles (AgNP) and luliconazole-nanoparticles (LZNP) nanoparticles, prepared using PLGA. Fabricated nanofibers had pH close to target area and exhibited hydrophilic surface suitable for adhesion to wound area. The nanofibers showed strong antifungal and antibiofilm properties against different strains of Candida; mainly C. albicans, C. auris, C. krusei, C. parapsilosis and C. tropicalis. Nanofibers exhibited excellent water retention potential and water vapour transmission rate. The nanofibers had sufficient payload capacity towards AgNP and LZNP, and provided controlled release of payload, which was also confirmed by in-vivo imaging. In-vitro studies confirmed the biocompatibility and enhanced proliferation of Human keratinocytes cells (HaCaT). In-vivo studies showed accelerated wound closure by providing ant-infective action, supporting cellular proliferation and improving blood flow, all collectively contributing in expedited wound healing.
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Affiliation(s)
- Manjit Manjit
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India.
| | - Manish Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India.
| | - Abhishek Jha
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India.
| | - Kanchan Bharti
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India.
| | - Krishan Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India.
| | - Punit Tiwari
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Ragini Tilak
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Virendra Singh
- Cancer Biology Laboratory, Department of Zoology Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Biplob Koch
- Cancer Biology Laboratory, Department of Zoology Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Brahmeshwar Mishra
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India.
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14
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Kang K, Du X, Shi L, Peng Z, Zhang X, Liu B, Yue G, Wang L, Wang Z, Chen S. Selective detection of ionic liquid fluorescence probes for visual colorimetry of different metal ions. Environ Res 2024; 242:117791. [PMID: 38043897 DOI: 10.1016/j.envres.2023.117791] [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] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 11/22/2023] [Accepted: 11/23/2023] [Indexed: 12/05/2023]
Abstract
At present, the fast distinction of different metal ions in pure water media is not only a great challenge, but also drives the protection of water quality in environmental water bodies. In this paper, a novel ionic liquid fluorescent probe Glycolic Acid-L-Arginine (GA-L-Arg) was rationally created and designed through an in-depth study of ionic liquids. It is also used as an innovative multi-ion fluorescent probe for colorimetric detection and separate identification of Fe3+ and Co2+ in aqueous solutions of various metal ions. GA-L-Arg has excellent water solubility due to the strong hydrophilicity of Glycolic Acid and L-Arginine. The probe showed high sensitivity, extremely significant selectivity, and great pH stability for Fe3+ and Co2+ in pure water. The GA-L-Arg structure and the mechanism of Fe3+ and Co2+ detection were analyzed by infrared spectroscopic characterization and quantum chemical calculations. More importantly, the distinct colorimetric partitioning of Fe3+ and Co2+ was performed by the unique extraction of Fe3+ in the presence of the fluorescent probe and buffer solution.
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Affiliation(s)
- Kaiming Kang
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050000, PR China; Hebei Key Laboratory of Pollution Prevention Biotechnology, Shijiazhuang, Hebei, 050000, PR China
| | - Xiaohan Du
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050000, PR China; Hebei Key Laboratory of Pollution Prevention Biotechnology, Shijiazhuang, Hebei, 050000, PR China
| | - Lei Shi
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050000, PR China; Hebei Key Laboratory of Pollution Prevention Biotechnology, Shijiazhuang, Hebei, 050000, PR China
| | - Zhixiao Peng
- Hebei Key Laboratory of Pollution Prevention Biotechnology, Shijiazhuang, Hebei, 050000, PR China; School of Food Science and Biology, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050000, PR China
| | - Xiaojie Zhang
- Hebei Key Laboratory of Pollution Prevention Biotechnology, Shijiazhuang, Hebei, 050000, PR China; School of Food Science and Biology, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050000, PR China
| | - Baoyou Liu
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050000, PR China; Hebei Key Laboratory of Pollution Prevention Biotechnology, Shijiazhuang, Hebei, 050000, PR China.
| | - Gang Yue
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050000, PR China; Ningxia Hui Autonomous Region Screen Display Organic Materials Engineering Technology Research Center, Ningxia Sinostar Display Material Co., Ltd, Yinchuan, Ningxia, 750000, PR China
| | - Limin Wang
- Ningxia Hui Autonomous Region Screen Display Organic Materials Engineering Technology Research Center, Ningxia Sinostar Display Material Co., Ltd, Yinchuan, Ningxia, 750000, PR China
| | - Zhiqiang Wang
- Ningxia Hui Autonomous Region Screen Display Organic Materials Engineering Technology Research Center, Ningxia Sinostar Display Material Co., Ltd, Yinchuan, Ningxia, 750000, PR China
| | - Shaohua Chen
- Ningxia Hui Autonomous Region Screen Display Organic Materials Engineering Technology Research Center, Ningxia Sinostar Display Material Co., Ltd, Yinchuan, Ningxia, 750000, PR China
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15
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Yuan Y, Xu Y, Mao Y, Liu H, Ou M, Lin Z, Zhao R, Long H, Cheng L, Sun B, Zhao S, Zeng M, Lu B, Lu H, Zhu Y, Chen C. Three Birds, One Stone: An Osteo-Microenvironment Stage-Regulative Scaffold for Bone Defect Repair through Modulating Early Osteo-Immunomodulation, Middle Neovascularization, and Later Osteogenesis. Adv Sci (Weinh) 2024; 11:e2306428. [PMID: 38060833 PMCID: PMC10853759 DOI: 10.1002/advs.202306428] [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: 09/06/2023] [Revised: 10/28/2023] [Indexed: 02/10/2024]
Abstract
In order to repair critical-sized bone defects, various polylactic acid-glycolic acid (PLGA)-based hybrid scaffolds are successfully developed as bone substitutes. However, the byproducts of these PLGA-based scaffolds are known to acidify the implanted site, inducing tiresome acidic inflammation. Moreover, these degradation productions cannot offer an osteo-friendly microenvironment at the implanted site, matching natural bone healing. Herein, inspired by bone microenvironment atlas of natural bone-healing process, an osteo-microenvironment stage-regulative scaffold (P80/D10/M10) is fabricated by incorporating self-developed decellularized bone matrix microparticles (DBM-MPs) and multifunctional magnesium hydroxide nanoparticles (MH-NPs) into PLGA with an optimized proportion using low-temperature rapid prototyping (LT-RP) 3D-printing technology. The cell experiments show that this P80/D10/M10 exhibits excellent properties in mechanics, biocompatibility, and biodegradability, meanwhile superior stimulations in osteo-immunomodulation, angiogenesis, and osteogenesis. Additionally, the animal experiments determined that this P80/D10/M10 can offer an osteo-friendly microenvironment in a stage-matched pattern for enhanced bone regeneration, namely, optimization of early inflammation, middle neovascularization, and later bone formation. Furthermore, transcriptomic analysis suggested that the in vivo performance of P80/D10/M10 on bone defect repair is mostly attributed to regulating artery development, bone development, and bone remodeling. Overall, this study reveals that the osteo-microenvironment stage-regulative scaffold provides a promising treatment for bone defect repair.
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Affiliation(s)
- Yuhao Yuan
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
- National Clinical Research Center for Geriatric DisordersXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Yan Xu
- Key Laboratory of Organ InjuryAging and Regenerative Medicine of Hunan ProvinceChangshaHunan410008China
- Department of Sports MedicineXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Yiyang Mao
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
- Key Laboratory of Organ InjuryAging and Regenerative Medicine of Hunan ProvinceChangshaHunan410008China
| | - Hongbin Liu
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Minning Ou
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Zhangyuan Lin
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Ruibo Zhao
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Haitao Long
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Liang Cheng
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Buhua Sun
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Shushan Zhao
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Ming Zeng
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Bangbao Lu
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Hongbin Lu
- National Clinical Research Center for Geriatric DisordersXiangya HospitalCentral South UniversityChangshaHunan410008China
- Key Laboratory of Organ InjuryAging and Regenerative Medicine of Hunan ProvinceChangshaHunan410008China
- Department of Sports MedicineXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Yong Zhu
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
| | - Can Chen
- Department of OrthopedicsXiangya HospitalCentral South UniversityChangshaHunan410008China
- National Clinical Research Center for Geriatric DisordersXiangya HospitalCentral South UniversityChangshaHunan410008China
- Key Laboratory of Organ InjuryAging and Regenerative Medicine of Hunan ProvinceChangshaHunan410008China
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16
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Wang M, Tabeta H, Ohtaka K, Kuwahara A, Nishihama R, Ishikawa T, Toyooka K, Sato M, Wakazaki M, Akashi H, Tsugawa H, Shoji T, Okazaki Y, Yoshida K, Sato R, Ferjani A, Kohchi T, Hirai MY. The phosphorylated pathway of serine biosynthesis affects sperm, embryo, and sporophyte development, and metabolism in Marchantia polymorpha. Commun Biol 2024; 7:102. [PMID: 38267515 PMCID: PMC10808223 DOI: 10.1038/s42003-023-05746-6] [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: 04/03/2023] [Accepted: 12/27/2023] [Indexed: 01/26/2024] Open
Abstract
Serine metabolism is involved in various biological processes. Here we investigate primary functions of the phosphorylated pathway of serine biosynthesis in a non-vascular plant Marchantia polymorpha by analyzing knockout mutants of MpPGDH encoding 3-phosphoglycerate dehydrogenase in this pathway. Growth phenotypes indicate that serine from the phosphorylated pathway in the dark is crucial for thallus growth. Sperm development requires serine from the phosphorylated pathway, while egg formation does not. Functional MpPGDH in the maternal genome is necessary for embryo and sporophyte development. Under high CO2 where the glycolate pathway of serine biosynthesis is inhibited, suppressed thallus growth of the mutants is not fully recovered by exogenously-supplemented serine, suggesting the importance of serine homeostasis involving the phosphorylated and glycolate pathways. Metabolomic phenotypes indicate that the phosphorylated pathway mainly influences the tricarboxylic acid cycle, the amino acid and nucleotide metabolism, and lipid metabolism. These results indicate the importance of the phosphorylated pathway of serine biosynthesis in the dark, in the development of sperm, embryo, and sporophyte, and metabolism in M. polymorpha.
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Affiliation(s)
- Mengyao Wang
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | - Hiromitsu Tabeta
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
- Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
- Department of Biology, Tokyo Gakugei University, Tokyo, Japan
| | - Kinuka Ohtaka
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
- Department of Chemical and Biological Sciences, Japan Women's University, Tokyo, Japan
| | - Ayuko Kuwahara
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Ryuichi Nishihama
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Tokyo, Japan
| | - Toshiki Ishikawa
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | | | - Mayuko Sato
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Mayumi Wakazaki
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | | | - Hiroshi Tsugawa
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Tsubasa Shoji
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Yozo Okazaki
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
- Graduate School of Bioresource, Mie University, Tsushi, Japan
| | - Keisuke Yoshida
- Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Japan
| | - Ryoichi Sato
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Ali Ferjani
- Department of Biology, Tokyo Gakugei University, Tokyo, Japan
| | - Takayuki Kohchi
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Masami Yokota Hirai
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan.
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan.
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17
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Ghane Y, Heidari N, Hosseini S, Heidari A, Pishraft-Sabet H, Eghbali S, Goodarzi A. Efficacy and safety of lasers versus topical medications for acanthosis nigricans and pseudo-acanthosis nigricans treatment: a systematic review. Lasers Med Sci 2024; 39:44. [PMID: 38253899 DOI: 10.1007/s10103-024-03986-4] [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: 08/30/2023] [Accepted: 01/04/2024] [Indexed: 01/24/2024]
Abstract
Acanthosis nigricans (AN) is a cutaneous disorder identified by well-defined pigmented plaques mostly detected on skin folds. Timely diagnosis and treatment of AN is essential as it could be an early manifestation of an underlying condition. The treatment of choice for AN has not been determined yet. Our study aimed to compare the efficacy and safety of various lasers with topical medications, including cream and peel. PubMed, Scopus, and Web of Science databases, as well as the Google Scholar search engine, were thoroughly searched until May 1st, 2023. Study selection was restricted to clinical trials published in English language comparing lasers with topical treatments. This study followed the PRISMA guidelines for systematic reviews and meta-analyses. Out of 1748 studies, Six clinical trials met our inclusion criteria, with 133 patients. We examined laser therapies, including fractional CO2 laser, 1550-nm erbium fiber laser, and long-pulsed alexandrite laser, while the topical treatments comprised glycolic acid (GA) peel, retinoic acid peel, trichloroacetic acid (TCA) peel, and tretinoin cream. In two studies, GA peel demonstrated favorable results compared to fractional CO2 laser. Besides, fractional CO2 laser exhibited efficacy, surpassing TCA peel in AN management. Additionally, a fractional 1550-nm erbium fiber laser displayed superiority over tretinoin cream in reducing average roughness. Similarly, a long-pulsed alexandrite laser demonstrated its effectiveness in axillary AN treatment compared to the combination of tretinoin and ammonium lactate. Overall, the findings revealed that laser therapy was associated with superior results. Moreover, topical treatments are safe and efficacious in AN management.
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Affiliation(s)
- Yekta Ghane
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Nazila Heidari
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - SeyedAyin Hosseini
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amirhossein Heidari
- Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | | | - Sara Eghbali
- School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Azadeh Goodarzi
- Department of Dermatology, Rasool Akram Medical Complex Clinical Research Development Center (RCRDC), School of Medicine, Iran University of Medical Sciences (IUMS), Sattarkhan Avenue, Niayesh Street, Tehran, 1445613131, Iran.
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Shaz N, Maran S, Genasan K, Choudhary R, Alias R, Swamiappan S, Kamarul T, Raghavendran HRB. Functionalization of poly (lactic-co-glycolic acid) nano‑calcium sulphate and fucoidan 3D scaffold using human bone marrow mesenchymal stromal cells for bone tissue engineering application. Int J Biol Macromol 2024; 256:128059. [PMID: 37989428 DOI: 10.1016/j.ijbiomac.2023.128059] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 05/23/2023] [Revised: 10/19/2023] [Accepted: 11/10/2023] [Indexed: 11/23/2023]
Abstract
This study aimed to functionalize a novel porous PLGA (Poly lactic-co-glycolic acid) composite scaffold in combination with nano‑calcium sulphate (nCS) and/or fucoidan (FU) to induce osteogenic differentiation of human bone marrow stromal cells. The composite scaffolds (PLGA-nCS-FU, PLGA-nCS or PLGA-FU) were fabricated and subjected to characterization using Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), Scanning electron microscopy (SEM) and Energy Dispersive X-Ray (EDX). The biocompatibility and osteogenic induction potential of scaffolds on seeded human bone marrow derived mesenchymal stromal cells (hBMSCs) were studied using cell attachment and alamar blue cell viability and alkaline phosphatase (ALP), osteocalcin and osteogenic gene expression, respectively. The composition of different groups was reflected in FTIR, XRD and EDX. The SEM micrographs revealed a difference in the surface of the scaffold before and after FU addition. The confocal imaging and SEM micrographs confirmed the attachment of cells onto all three composite scaffolds. However, the AB assay indicated a significant increase (p < 0.05) in cell viability/proliferation seeded on PLGA-nCS-FU on day 21 and 28 as compared with other combinations. A 2-fold significant increase (p < 0.05) in ALP and OC secretion of seeded hBMSCs onto PLGA-nCS-FU was observed when compared with other combinations. A significant increase in RUNX2, OPN, COL-I and ALP genes were observed in the cells seeded on PLGA-nCS-FU on day 14 and 28 as compared with day 0. In conclusion, the incorporation of both Fucoidan and Nano‑calcium sulphate with PLGA showed a promising improvement in the osteogenic potential of hBMSCs. Therefore, PLGA-nCS-FU could be the ideal candidate for subsequent pre-clinical studies to develop a successful bone substitute to repair critical bone defects.
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Affiliation(s)
- Norshazliza Shaz
- National Orthopaedic Centre of Excellence in Research and Learning (NOCERAL), Tissue Engineering Group (TEG), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Sathiya Maran
- School of Pharmacy, Monash University Malaysia. 16150 Sunway, Malaysia
| | - Krishnamurithy Genasan
- National Orthopaedic Centre of Excellence in Research and Learning (NOCERAL), Tissue Engineering Group (TEG), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; Department of Physiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Rajan Choudhary
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Faculty of Materials Science and Applied Chemistry, Institute of General Chemical Engineering, Riga Technical University, Pulka St 3, LV-1007 Riga, Latvia; Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Kalku Street 1, LV-1658 Riga, Latvia
| | - Rodianah Alias
- Department of Manufacturing Technology, Faculty of Innovative Design & Technology, University Sultan Zainal Abidin, 21030 Kuala Terengganu, Malaysia
| | - Sasikumar Swamiappan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Tunku Kamarul
- National Orthopaedic Centre of Excellence in Research and Learning (NOCERAL), Tissue Engineering Group (TEG), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; Advanced Medical and Dental Institute (AMDI), University Sains Malaysia, Bertam, Kepala Batas, 13200, Penang, Malaysia
| | - Hanumanth Rao Balaji Raghavendran
- National Orthopaedic Centre of Excellence in Research and Learning (NOCERAL), Tissue Engineering Group (TEG), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; Sri Ramachandra Institute of Higher Education and Research, Biomaterials Laboratory, Faculty of Clinical Research, Central Research Facility, Porur, Chennai 116, India.
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Mohanta M, Ramdhun Y, Thirugnanam A, Gupta R, Verma D, Deepak T, Babu AR. Biodegradable AZ91 magnesium alloy/sirolimus/poly D, L-lactic-co-glycolic acid-based substrate for cardiovascular device application. J Biomed Mater Res B Appl Biomater 2024; 112:e35350. [PMID: 37966681 DOI: 10.1002/jbm.b.35350] [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: 05/06/2023] [Revised: 09/26/2023] [Accepted: 10/30/2023] [Indexed: 11/16/2023]
Abstract
Biodegradable drug-eluting stents (DESs) are gaining importance owing to their attractive features, such as complete drug release to the target site. Magnesium (Mg) alloys are promising materials for future biodegradable DESs. However, there are few explorations using biodegradable Mg for cardiovascular stent application. In this present study, sirolimus-loaded poly D, L-lactic-co-glycolic acid (PLGA)-coated/ sirolimus-fixed/AZ91 Mg alloy-based substrate was developed via a layer-by-layer approach for cardiovascular stent application. The AZ91 Mg alloy was prepared through the squeeze casting technique. The casted AZ91 Mg alloy (Mg) was alkali-treated to provide macroporous networks to hold the sirolimus and PLGA layers. The systematic characterization was investigated via electrochemical, optical, physicochemical, and in-vitro biological characteristics. The presence of the Mg17 Al12 phase in the Mg sample was found in the x-ray diffraction system (XRD) spectrum which influences the corrosion behavior of the developed substrate. The alkali treatment increases the substrate's hydrophilicity which was confirmed through static contact angle measurement. The anti-corrosion characteristic of casted-AZ91 Mg alloy (Mg) was slightly less than the sirolimus-loaded PLGA-coated alkali-treated AZ91 Mg alloy (Mg/Na/S/P) substrate. However, dissolution rates for both substrates were found to be controlled at cell culture conditions. Radiographic densities of AZ91 Mg alloy substrates (Mg, Mg/Na, and Mg/Na/S/P) were measured to be 0.795 ± 0.015, 0.742 ± 0.01, and 0.712 ± 0.017, respectively. The star-shaped structure of 12% sirolimus/PLGA ensures the bioavailability of the drugs. Sirolimus release kinetic was fitted up to 80% with the "Higuchi model" for Mg samples, whereas Mg/Na/S/P showed 45% fitting with a zero-order mechanism. The Mg/Na/S/P substrate showed a 70% antithrombotic effect compared to control. Further, alkali treatment enhances the antibacterial characteristic of AZ91 Mg alloy. Also, the alkali-treated sirolimus-loaded substrates (Mg/Na/S and Mg/Na/S/P) inhibit the valvular interstitial cell's growth significantly in in-vitro. Hence, the results imply that sirolimus-loaded PLGA-coated AZ91 Mg alloy-based substrate can be a potential candidate for cardiovascular stent application.
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Affiliation(s)
- Monalisha Mohanta
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Yugesh Ramdhun
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Arunachalam Thirugnanam
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Ritvesh Gupta
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Devendra Verma
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Thirumalai Deepak
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Anju R Babu
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
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Fan M, Li L, Xu X, Zhou C, Wang P, Yin W, Pei W, Wang S. Psychological status of patients with functional anorectal pain and treatment efficacy of paroxetine in alleviating the symptoms: a retrospective study. Sci Rep 2023; 13:18007. [PMID: 37865675 PMCID: PMC10590436 DOI: 10.1038/s41598-023-45401-y] [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: 07/26/2023] [Accepted: 10/19/2023] [Indexed: 10/23/2023] Open
Abstract
The aim of this study was to investigate the clinical characteristics, psychological status, sleep quality, and quality of life of patients with functional anorectal pain (FAP). The study also assessed the treatment efficacy of paroxetine in alleviating FAP symptoms. A retrospective comparative study of forty-three patients with FAP who were first treated with an anal plug compound glycolate suppository versus paroxetine combined with anal plug compound glycolate suppository between November 2021 and August 2022. Pain, quality of life, depression, anxiety and sleep quality were assessed before and after treatment by the Chinese version of the Short-Form McGill Pain Questionnaire-2 (SF-MPQ-2), Health-related quality of life scale (The 12-Item Short-Form Health Survey, SF-12), 17-item Hamilton Depression Rating Scale (HDRS), 14-item Hamilton Anxiety Scale (HAMA), and Pittsburgh Sleep Quality Index (PSQI). A total of 46.5% of patients with FAP were found to have anxiety symptoms (HAMA ≥ 7), 37.2% of patients with FAP were found to have depressive symptoms (HDRS ≥ 8). A total of 32.6% of patients with FAP had sleep disorders (PSQI > 10). Within 1 week after drug withdrawal, the short-term efficacy rate of oral paroxetine was 95.5%. After treatment, the symptom pain score (VAS) and sleep score were lower than those before treatment (P < 0.01). In the areas of vitality (VT), Social Functioning (SF), and Mental Health (MH), the difference between the pre-treatment and 8 weeks posttreatment scores of the study group and the control group was statistically significant (P < 0.05). FAP patients have obvious symptoms of anxiety and depression, and the incidence of sleep disturbance is prevalent. Paroxetine, a typical serotonin reuptake inhibitor (SSRI), was able to alleviate depression, anxiety, and pain symptoms in FAP, which might have clinical application prospects.
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Affiliation(s)
- Mingfeng Fan
- Department of Anorectal Surgery, Affiliated Hospital of Jining Medical University, Jining, China
| | - Laian Li
- Department of Anorectal Surgery, Affiliated Hospital of Jining Medical University, Jining, China
| | - Xiangjun Xu
- Department of Anorectal Surgery, Affiliated Hospital of Jining Medical University, Jining, China
| | - Cong Zhou
- Department of Psychology, Affiliated Hospital of Jining Medical University, Jining, China
- School of Mental Health, Jining Medical University, Jining, China
| | - Peng Wang
- Department of Anorectal Surgery, Affiliated Hospital of Jining Medical University, Jining, China
| | - Wanbin Yin
- Department of Anorectal Surgery, Affiliated Hospital of Jining Medical University, Jining, China
| | - Wenju Pei
- Department of Anorectal Surgery, Affiliated Hospital of Jining Medical University, Jining, China
| | - Shuai Wang
- Department of Anorectal Surgery, Affiliated Hospital of Jining Medical University, Jining, China.
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Straccia C VG, Blanco MB, Teruel MA. Hydroxy esters atmospheric degradation: OH and Cl reactivity, products distribution and fate of the alkoxy radicals formed. Chemosphere 2023; 339:139726. [PMID: 37543227 DOI: 10.1016/j.chemosphere.2023.139726] [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] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/31/2023] [Accepted: 08/02/2023] [Indexed: 08/07/2023]
Abstract
Kinetic studies of the reaction of ethyl glycolate HOCH2C(O)OCH2CH3 with OH radicals (kOH) and Cl atoms (kCl) have been conducted by the relative method using a glass atmospheric reactor by "in situ" Fourier Transform Infrared (FTIR) and Gas Chromatography equipped with flame ionization detection by Solid Phase Micro Extraction (GC-FID/SPME) at room temperature and atmospheric pressure. The following relative rate coefficients were determined using several reference compounds and two different techniques: kEG + OH-FTIR = (4.36 ± 1.21) × 10-12; kEG + OH-GC-FID= (3.90 ± 0.74) × 10-12; and kEG + Cl-GC-FID= (6.40 ± 0.72) × 10-11 all values in units of cm3.molecule-1.s-1. Complementary product studies were performed under comparable conditions to the kinetic tests, in order to identify the reaction products and to postulate their tropospheric oxidation mechanisms. The reaction of OH radicals and Cl atoms with ethyl glycolate initiates via H-atom abstraction from alkyl groups of the molecule. Formic acid was positively identified as a reaction product by FTIR. On the other hand, formaldehyde, acetaldehyde, glycolic acid; and formic acid were identified by the GC-MS technique. The Structure-Activity Relationship, (SAR) calculations were also implemented to estimate the more favorable reaction pathways and compare them with the products identified. Tropospheric lifetimes of τOH = 34 h and τCl = 5.5 days were estimated to determine how these investigated reactions might affect the air quality. In this sense, average ozone production of [O3] = 0.75 and a Photochemical Ozone Creation Potential, POCP, of 38 were calculated for the hydroxyl ester studied.
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Affiliation(s)
- Vianni G Straccia C
- (L.U.Q.C.A), Laboratorio Universitario de Química y Contaminación del Aire, Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.), Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000, Córdoba, Argentina
| | - María B Blanco
- (L.U.Q.C.A), Laboratorio Universitario de Química y Contaminación del Aire, Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.), Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000, Córdoba, Argentina; Institute for Atmospheric and Environmental Research, University of Wuppertal, DE-42097, Wuppertal, Germany
| | - Mariano A Teruel
- (L.U.Q.C.A), Laboratorio Universitario de Química y Contaminación del Aire, Instituto de Investigaciones en Fisicoquímica de Córdoba (I.N.F.I.Q.C.), Dpto. de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000, Córdoba, Argentina.
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22
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Elafify MS, Itagaki T, Elkasabgy NA, Sayed S, Ito Y, Ueda M. Reversible transformation of peptide assembly between densified-polysarcosine-driven kinetically and helix-orientation-driven thermodynamically stable morphologies. Biomater Sci 2023; 11:6280-6286. [PMID: 37548917 DOI: 10.1039/d3bm00714f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Stimuli-responsive transformable biomaterials development can be manipulated practically by fine-tuning the built-in molecular design of their structural segments. Here, we demonstrate a peptide assembly by the bola-type amphiphilic polypeptide, glycolic acid-polysarcosine (PSar)13-b-(L-Leu-Aib)6-b-PSar13-glycolic acid (S13L12S13), which shows morphological transformations between hydrophilic chain-driven and hydrophobic unit-driven morphologies. The hydrophobic α-helical unit (L-Leu-Aib)6 precisely controls packing in the hydrophobic layer of the assembly and induces tubule formation. The densified, hydrophilic PSar chain on the assembly surface becomes slightly more hydrophobic as the temperature increases above 70 °C, starting to disturb the helix-helix interaction-driven formation of tubules. As a result, the S13L12S13 peptide assembly undergoes a reversible vesicle-nanotube transformation following a time course at room temperature and a heat treatment above 80 °C. Using membrane fluidity analysis with DPH and TMA-DPH and evaluating the environment surrounding the PSar side chain with NMR, we clarify that the vesicle was in a kinetically stable state driven by the dehydrated PSar chain, while the nanotube was in a thermodynamically stable state.
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Affiliation(s)
- Mohamed S Elafify
- RIKEN Cluster for Pioneering Research (CPR), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo 11562, Egypt
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Menoufia University, Gamal Abdel El-Nasr Street, Shebin El-Kom, Menoufia 32511, Egypt
| | - Toru Itagaki
- RIKEN Cluster for Pioneering Research (CPR), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
| | - Nermeen A Elkasabgy
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo 11562, Egypt
| | - Sinar Sayed
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo 11562, Egypt
| | - Yoshihiro Ito
- RIKEN Cluster for Pioneering Research (CPR), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Motoki Ueda
- RIKEN Cluster for Pioneering Research (CPR), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Vinothkumar M, Karthikeyan BS, Janani K, Mahalaxmi S. Glycolic acid - A promising root canal chelator. AUST ENDOD J 2023; 49 Suppl 1:540-541. [PMID: 37178012 DOI: 10.1111/aej.12762] [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] [Received: 01/18/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023]
Affiliation(s)
- Muralikrishnan Vinothkumar
- Department of Conservative Dentistry and Endodontics, SRM Dental College, Ramapuram, SRM Institute of Science and Technology, Chennai, India
| | | | - Krishnamachari Janani
- Department of Conservative Dentistry and Endodontics, SRM Dental College, Ramapuram, SRM Institute of Science and Technology, Chennai, India
| | - Sekar Mahalaxmi
- Department of Conservative Dentistry and Endodontics, SRM Dental College, Ramapuram, SRM Institute of Science and Technology, Chennai, India
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24
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Souza MA. Response to, "Glycolic acid - A promising root canal chelator". AUST ENDOD J 2023; 49 Suppl 1:542-543. [PMID: 37178010 DOI: 10.1111/aej.12764] [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] [Received: 03/31/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023]
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Bnaya A, Abu-Amer N, Beckerman P, Volkov A, Cohen-Hagai K, Greenberg M, Ben-Chetrit S, Ben Tikva Kagan K, Goldman S, Navarro HA, Sneineh MA, Rozen-Zvi B, Borovitz Y, Tobar A, Yanay NB, Biton R, Angel-Korman A, Rappoport V, Leiba A, Bathish Y, Farber E, Kaidar-Ronat M, Schreiber L, Shashar M, Kazarski R, Chernin G, Itzkowitz E, Atrash J, Iaina NL, Efrati S, Nizri E, Lurie Y, Ben Itzhak O, Assady S, Kenig-Kozlovsky Y, Shavit L. Acute Kidney Injury and Hair-Straightening Products: A Case Series. Am J Kidney Dis 2023; 82:43-52.e1. [PMID: 36610611 DOI: 10.1053/j.ajkd.2022.11.016] [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: 07/07/2022] [Accepted: 11/27/2022] [Indexed: 01/06/2023]
Abstract
RATIONALE & OBJECTIVE Keratin-based hair-straightening treatment is a popular hair-styling method. The majority of keratin-based hair-straightening products in Israel contain glycolic acid derivatives, which are considered safe when used topically. Systemic absorption of these products is possible, and anecdotal reports have described kidney toxicity associated with their use. We report a series of cases of severe acute kidney injury (AKI) following use of hair-straightening treatment in Israel during the past several years. STUDY DESIGN Case series. SETTING & PARTICIPANTS We retrospectively identified 26 patients from 14 medical centers in Israel who experienced severe AKI and reported prior treatment with hair-straightening products in 2019-2022. FINDINGS The 26 patients described had a median age of 28.5 (range, 14-58) years and experienced severe AKI following a hair-straightening procedure. The most common symptoms at presentation were nausea, vomiting, and abdominal pain. Scalp rash was noted in 10 (38%) patients. Two patients experienced a recurrent episode of AKI following a repeat hair-straightening treatment. Seven patients underwent kidney biopsies, which demonstrated intratubular calcium oxalate deposition in 6 and microcalcification in tubular cells in 1. In all biopsies, signs of acute tubular injury were present, and an interstitial infiltrate was noted in 4 cases. Three patients required temporary dialysis. LIMITATIONS Retrospective uncontrolled study, small number of kidney biopsies. CONCLUSIONS This series describes cases of AKI with prior exposure to hair-straightening treatments. Acute oxalate nephropathy was the dominant finding on kidney biopsies, which may be related to absorption of glycolic acid derivatives and their metabolism to oxalate. This case series suggests a potential underrecognized cause of AKI in the young healthy population. Further studies are needed to confirm this association and to assess the extent of this phenomenon as well as its pathogenesis.
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Affiliation(s)
- Alon Bnaya
- Institute of Nephrology, Shaare Zedek Medical Center, Hebrew University of Jerusalem, Jerusalem.
| | - Nabil Abu-Amer
- Institute of Nephrology and Hypertension, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv
| | - Pazit Beckerman
- Institute of Nephrology and Hypertension, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv
| | - Alexander Volkov
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv
| | - Keren Cohen-Hagai
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba
| | - Meidad Greenberg
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba
| | - Sydney Ben-Chetrit
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba
| | - Kim Ben Tikva Kagan
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Nephrology and Hypertension, Rabin Medical Center, Petah Tikva
| | - Shira Goldman
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Nephrology and Hypertension, Rabin Medical Center, Petah Tikva
| | - Hadar Agmon Navarro
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Nephrology and Hypertension, Rabin Medical Center, Petah Tikva
| | - Marwan Abu Sneineh
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Nephrology and Hypertension, Rabin Medical Center, Petah Tikva
| | - Benaya Rozen-Zvi
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Nephrology and Hypertension, Rabin Medical Center, Petah Tikva
| | - Yael Borovitz
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Nephrology institute, Schneider Children's Medical Center, Petah Tikva, Israel
| | - Ana Tobar
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Pathology, Rabin Medical Center, Petah Tikva
| | | | - Ray Biton
- Nephrology and Hypertension Institute, Samson Assuta Ashdod University Hospital, Ashdod
| | - Avital Angel-Korman
- Nephrology and Hypertension Institute, Samson Assuta Ashdod University Hospital, Ashdod; Faculty of Health Sciences, Ben Gurion University of the Negev, Beersheba
| | - Vladimir Rappoport
- Faculty of Health Sciences, Ben Gurion University of the Negev, Beersheba
| | - Adi Leiba
- Nephrology and Hypertension Institute, Samson Assuta Ashdod University Hospital, Ashdod; Faculty of Health Sciences, Ben Gurion University of the Negev, Beersheba
| | | | - Evgeni Farber
- Nephrology Unit, Baruch Padeh Medical Center, Tiberias
| | - Maital Kaidar-Ronat
- Edith Wolfson Medical Center Ringgold Standard Institution, Edith Wolfson Medical Center, Holon
| | - Letizia Schreiber
- Institute of Nephrology, Shaare Zedek Medical Center, Hebrew University of Jerusalem, Jerusalem; Department of Pathology, Edith Wolfson Medical Center, Holon
| | - Moshe Shashar
- Department of Nephrology and Hypertension, Laniado Hospital, Netanya
| | | | - Gil Chernin
- Nephrology Institute, Kaplan Medical Center, Rehovot
| | - Eyal Itzkowitz
- Institute of Nephrology, Shaare Zedek Medical Center, Hebrew University of Jerusalem, Jerusalem
| | - Jawad Atrash
- Institute of Nephrology, Shaare Zedek Medical Center, Hebrew University of Jerusalem, Jerusalem
| | - Nomy Levin Iaina
- Faculty of Health Sciences, Ben Gurion University of the Negev, Beersheba; Department of Nephrology and Hypertension, Barzilai Medical Center, Ashkelon
| | - Shai Efrati
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Nephrology, Shamir (Assaf Harofeh) Medical Center, Zerifin
| | - Elad Nizri
- Department of Pathology, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv; Department of Nephrology, Shamir (Assaf Harofeh) Medical Center, Zerifin
| | - Yael Lurie
- Clinical Pharmacology and Toxicology Section, Israel Poison Information Center, Nephrology and Hypertension, Rambam Medical Center; B. Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Ofer Ben Itzhak
- Department of Pathology, Rambam Medical Center; B. Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Suheir Assady
- Department of Nephrology and Hypertension, Rambam Medical Center; B. Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Yael Kenig-Kozlovsky
- Clinical Pharmacology and Toxicology Section, Israel Poison Information Center, Nephrology and Hypertension, Rambam Medical Center; Department of Nephrology and Hypertension, Rambam Medical Center; B. Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Linda Shavit
- Institute of Nephrology, Shaare Zedek Medical Center, Hebrew University of Jerusalem, Jerusalem
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Weng Y, Zou M, Liu X, Gu J, Liu Z, Fan Y, Zhang Y, Liao Y. Conversion of glucose to methyl glycolate in subcritical methanol. Chem Commun (Camb) 2023; 59:4340-4343. [PMID: 36945862 DOI: 10.1039/d3cc00303e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
Methyl glycolate (MG) is an important biodegradable PGA plastic monomer. Herein, a green approach to synthesize MG by methanolysis of glucose is proposed, in which the subcritical methanol and phenol/quinone redox system were combined to promote the reversible C-C cleavage and oxidation during the cascade reaction of glucose to MG.
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Affiliation(s)
- Yujing Weng
- Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China.
| | - Min Zou
- Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China.
| | - Xuying Liu
- Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China.
| | - Junchao Gu
- Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China.
| | - Zhijie Liu
- Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China.
| | - Yunchang Fan
- Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China.
| | - Yulong Zhang
- Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China.
| | - Yuhe Liao
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
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McGinley J, Healy MG, Ryan PC, Mellander PE, Morrison L, O'Driscoll JH, Siggins A. Batch adsorption of herbicides from aqueous solution onto diverse reusable materials and granulated activated carbon. J Environ Manage 2022; 323:116102. [PMID: 36103789 DOI: 10.1016/j.jenvman.2022.116102] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/18/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
This study reports the kinetics and isotherms of the adsorption of five herbicides, MCPA, mecoprop-P, 2,4-D, fluroxypyr and triclopyr, from aqueous solutions onto a range of raw and pyrolysed waste materials originating from an industrial setting. The raw waste materials investigated demonstrated little capability for any herbicide adsorption. Granulated activated carbon (GAC) was capable of the best removal of the herbicides, with >95% removal observed. A first order kinetic model fitted the data best for GAC adsorption of 2,4-D, while a pseudo-first order model fitted the data best for GAC adsorption of fluroxypyr and triclopyr, indicating that adsorption was via physisorption. A pseudo-second order kinetic model fitted the GAC adsorption of MCPA and mecoprop-P, which is indicative of chemisorption. The adsorption of the herbicides in all cases was best described by the Freundlich model, indicating that adsorption occurred onto heterogeneous surfaces.
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Affiliation(s)
- J McGinley
- Civil Engineering and Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - M G Healy
- Civil Engineering and Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - P C Ryan
- Discipline of Civil, Structural and Environmental Engineering, School of Engineering, University College Cork, Ireland; Environmental Research Institute, University College Cork, Cork, Ireland
| | - P-E Mellander
- Teagasc Environmental Research Centre, Johnstown Castle, Co. Wexford, Ireland
| | - L Morrison
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - J Harmon O'Driscoll
- Discipline of Civil, Structural and Environmental Engineering, School of Engineering, University College Cork, Ireland
| | - A Siggins
- Civil Engineering and Ryan Institute, National University of Ireland Galway, Galway, Ireland; Teagasc Environmental Research Centre, Johnstown Castle, Co. Wexford, Ireland.
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Kim M, An G, Lim W, Song G. Fluroxypyr-1-methylheptyl ester induced ROS production and mitochondrial apoptosis through the MAPK signaling cascade in porcine trophectoderm and uterine luminal epithelial cells. Pestic Biochem Physiol 2022; 187:105196. [PMID: 36127068 DOI: 10.1016/j.pestbp.2022.105196] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 07/27/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
FPMH (Fluroxypyr-1-methylheptyl ester) is a synthetic auxin herbicide used in agriculture. The mechanism by which FPMH induces adverse effects in porcine trophectoderm (pTr) and porcine uterine luminal epithelial (pLE) cells, which are involved in porcine implantation, have not been studied yet. Therefore, the present study investigates the toxicological effects of FPMH on pTr and pLE cells. We confirmed that FPMH induced cytotoxic effects on the cells, including apoptosis induction, mitochondrial membrane potential (MMP) depolarization, and ROS production. The phosphorylation of the MAPK pathway (ERK1/2, JNK, and p38) was dysregulated by FPMH administration. In addition, FPMH could suppress cell-cell adhesion and migration abilities of pTr and pLE, which are crucial for implantation. Therefore, exposure to FPMH induced adverse effects in pTr and pLE cells and could result in implantation failure.
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Affiliation(s)
- Miji Kim
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Garam An
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Whasun Lim
- Department of Biological Sciences, College of Science, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Gwonhwa Song
- Institute of Animal Molecular Biotechnology and Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
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29
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Wang Y, Yang H, Li B, Liu S, He M, Chen Q, Li J. Poly(Butylene Adipate/Terephthalate-Co-Glycolate) Copolyester Synthesis Based on Methyl Glycolate with Improved Barrier Properties: From Synthesis to Structure-Property. Int J Mol Sci 2022; 23:ijms231911074. [PMID: 36232379 PMCID: PMC9570190 DOI: 10.3390/ijms231911074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/16/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
The main problem of manufacturing with traditional biodegradable plastics is that it is more expensive than manufacturing with polymers derived from petroleum, and the application scope is currently limited due to poor comprehensive performance. In this study, a novel biodegradable poly(butylene adipic acid/terephthalate-co-glycolic acid) (PBATGA) copolyester with 25–60% glycolic acid units was successfully synthesized by esterification and polycondensation using cheap coal chemical byproduct methyl glycolate instead of expensive glycolic acid. The structure of the copolyester was characterized by ATR-FTIR, 1H NMR, DSC, and XRD; and its barrier property, water contact angle, heat resistance, and mechanical properties were tested. According to the experiment result, the PBATGA copolyesters showed improved oxygen (O2) and water vapor barrier character, and better hydrophilicity when compared with PBAT. The crystallization peaks of PBATGAs were elevated from 64 °C to 77 °C when the content of the GA unit was 25 mol %, meanwhile, the elongation at the break of PBATGA25 was more than 1300%. These results indicate that PBATGA copolyesters have good potentiality in high O2 and water vapor barrier and degradable packaging material.
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Affiliation(s)
- Yanning Wang
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
| | - Haicun Yang
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
| | - Bingjian Li
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
| | - Shi Liu
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
| | - Mingyang He
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China
| | - Qun Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China
| | - Jinchun Li
- School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Changzhou University, Changzhou 213164, China
- Correspondence:
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Cao Y, Ahmed AMQ, Du HH, Sun W, Lu X, Xu Z, Tao J, Cao QR. Combretastatin A4-loaded Poly (Lactic-co-glycolic Acid)/Soybean Lecithin Nanoparticles with Enhanced Drug Dissolution Rate and Antiproliferation Activity. Curr Drug Deliv 2022; 19:918-927. [PMID: 35139789 DOI: 10.2174/1567201819666220209093443] [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: 06/16/2021] [Revised: 08/24/2021] [Accepted: 12/12/2021] [Indexed: 11/22/2022]
Abstract
OBJECTIVE This study aimed to prepare combretastatin A4 (CA4)-loaded nanoparticles (CA4 NPs) using poly(lactic-co-glycolic acid) (PLGA) and soybean lecithin (Lipoid S100) as carriers, and further evaluate the physicochemical properties and cytotoxicities of CA4 NPs against cancer cells. METHODS CA4 NPs were prepared using a solvent evaporation technique. The effects of formulations on CA4 NPs were investigated in terms of particle size, zeta potential, encapsulation efficacy, and drug loading. The physicochemical properties of CA4 NPs were characterized using transmission electron microscopy, X-ray powder diffraction, differential scanning calorimetry, and Fourier transform infrared spectra. The drug release from CA4NPs was performed using a dialysis method. In addition, the cytotoxicity of CA4NPs against human alveolar basal epithelial (A549) cells was also evaluated. RESULTS CA4 NPs prepared with a low organic/water phase ratio (1:20) and high drug/PLGA mass ratio (1:2.5) exhibited a uniform hydrodynamic particle size of 142 nm, the zeta potential of -1.66 mV, and encapsulation efficacy and drug loading of 92.1% and 28.3%, respectively. CA4 NPs showed a significantly higher release rate than pure CA4 in pH 7.4 phosphate-buffered solution with 0.5% Tween 80. It was found that the drug molecules could change from the crystal state to an amorphous form when loaded into the PLGA/Lipoid S100 matrix, and some molecular interactions could also occur between the drug and PLGA. Importantly, CA4 NPs showed a remarkably higher antiproliferation activity against A549 cancer cells compared to pure CA4. CONCLUSION These results suggested the promising potential of PLGA/Lipoid S100 nanoparticles as the drug delivery system of CA4 for effective cancer therapy.
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Affiliation(s)
- Yue Cao
- Department of Pharmacy, Beijing Health Vocational College, Beijing 100053, People's Republic of China
| | | | - Huan-Huan Du
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, People's Republic of China
| | - Wei Sun
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, People's Republic of China
| | - Xiaojuan Lu
- PharmaMax Pharmaceuticals, Ltd., China Medical City, Taizhou 225300, People's Republic of China
| | - Zhao Xu
- PharmaMax Pharmaceuticals, Ltd., China Medical City, Taizhou 225300, People's Republic of China
| | - Jing Tao
- Department of Pharmacy, The First Affiliated Hospital of Soochow University, Suzhou 215006, People's Republic of China
| | - Qing-Ri Cao
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, People's Republic of China
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Abstract
The primary hyperoxalurias are three rare inborn errors of the glyoxylate metabolism in the liver, which lead to massively increased endogenous oxalate production, thus elevating urinary oxalate excretion and, based on that, recurrent urolithiasis and/or progressive nephrocalcinosis. Frequently, especially in type 1 primary hyperoxaluria, early end-stage renal failure occurs. Treatment possibilities are scare, namely, hyperhydration and alkaline citrate medication. In type 1 primary hyperoxaluria, vitamin B6, though, is helpful in patients with specific missense or mistargeting mutations. In those vitamin B6 responsive, urinary oxalate excretion and concomitantly urinary glycolate is significantly decreased, or even normalized. In patients non-responsive to vitamin B6, RNA interference medication is now available. Lumasiran® is already available on prescription and targets the messenger RNA of glycolate oxidase, thus blocking the conversion of glycolate into glyoxylate, hence decreasing oxalate, but increasing glycolate production. Nedosiran blocks liver-specific lactate dehydrogenase A and thus the final step of oxalate production. Similar to vitamin B6 treatment, where both RNA interference urinary oxalate excretion can be (near) normalized and plasma oxalate decreases, however, urinary and plasma glycolate increases with lumasiran treatment. Future treatment possibilities are on the horizon, for example, substrate reduction therapy with small molecules or gene editing, induced pluripotent stem cell-derived autologous hepatocyte-like cell transplantation, or gene therapy with newly developed vector technologies. This review provides an overview of current and especially new and future treatment options.
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Affiliation(s)
| | - Cristina Martin-Higueras
- German Hyperoxaluria Center, Bonn, Germany.
- Institute of Biomedical Technologies, CIBERER, Campus de Ofra s/n 38200, University of La Laguna, Tenerife, Spain.
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Moradeeya PG, Kumar MA, Sharma A, Basha S. Conductive polymer layered semiconductor for degradation of triclopyr acid and 2,4-dichlorophenoxyacetic acid from aqueous stream using coalesce adsorption-photocatalysis technique. Chemosphere 2022; 298:134360. [PMID: 35318015 DOI: 10.1016/j.chemosphere.2022.134360] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/25/2022] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
Polyaniline supported titanium dioxide nanoparticles (PTs) were fabricated using chemical oxidative aniline polymerization in the presence of titanium dioxide with ammonium peroxydisulfate as an oxidant. The synthesized PTs were thoroughly characterized for their morphological and functional features. PTs were employed for the photodegradation of acidic herbicides; 2,4-dichlorophenoxyacetic acid (2,4-D) and triclopyr acid (TCP). PT's surface modifications were imparted and their herbicide removal efficiencies were compared. The best operating conditions for adsorption/photocatalysis were 0.5 g/L photocatalyst, 10 mg/L concentration of individual herbicides resulted in 90.72% removal of TCP at pH 4 and 99.91% removal of 2,4-D at pH 5. Adsorption kinetics of herbicides, onto PT-1 showed the equilibrium attainment within 30 min and experimental data obeyed pseudo-second order model for TCP and 2,4-D removal which was governed by chemisorption. Analysis of TCP and 2,4-D adsorption indicated that the removal followed Sips model for TCP removal while Redlich-Peterson model explained the removal of 2,4-D by PT-1. Rate constants indicated that the amount of TiO2 in the PTs played an important role in removing the herbicides and PT-1 material excellent remarkable activity for three cycles of photodegradation. Thus, this work reports the polymerization of aniline onto TiO2 and their utility as photocatalyst for the expulsion of 2,4-D and TCP from water.
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Affiliation(s)
- Pareshkumar G Moradeeya
- Department of Environmental Science & Engineering, Marwadi University, Rajkot, 360 003, Gujarat, India; Hyderabad Zonal Centre, CSIR-National Environmental Engineering Research Institute, IICT Campus, Tarnaka, Hyderabad, 500 007, Telangana, India
| | - Madhava Anil Kumar
- Analytical and Environmental Science Division & Centralized Instrument Facility, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar, 364 002, Gujarat, India
| | - Archana Sharma
- Department of Environmental Science & Engineering, Marwadi University, Rajkot, 360 003, Gujarat, India
| | - Shaik Basha
- Hyderabad Zonal Centre, CSIR-National Environmental Engineering Research Institute, IICT Campus, Tarnaka, Hyderabad, 500 007, Telangana, India.
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Sun F, Sun X, Wang H, Li C, Zhao Y, Tian J, Lin Y. Application of 3D-Printed, PLGA-Based Scaffolds in Bone Tissue Engineering. Int J Mol Sci 2022; 23:ijms23105831. [PMID: 35628638 PMCID: PMC9143187 DOI: 10.3390/ijms23105831] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [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] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/09/2022] [Accepted: 05/16/2022] [Indexed: 02/06/2023] Open
Abstract
Polylactic acid–glycolic acid (PLGA) has been widely used in bone tissue engineering due to its favorable biocompatibility and adjustable biodegradation. 3D printing technology can prepare scaffolds with rich structure and function, and is one of the best methods to obtain scaffolds for bone tissue repair. This review systematically summarizes the research progress of 3D-printed, PLGA-based scaffolds. The properties of the modified components of scaffolds are introduced in detail. The influence of structure and printing method change in printing process is analyzed. The advantages and disadvantages of their applications are illustrated by several examples. Finally, we briefly discuss the limitations and future development direction of current 3D-printed, PLGA-based materials for bone tissue repair.
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Affiliation(s)
- Fengbo Sun
- State Key Laboratory of Advanced Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; (X.S.); (H.W.)
- Correspondence: (F.S.); (Y.L.); Tel.: +86-010-62773741 (Y.L.)
| | - Xiaodan Sun
- State Key Laboratory of Advanced Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; (X.S.); (H.W.)
| | - Hetong Wang
- State Key Laboratory of Advanced Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; (X.S.); (H.W.)
| | - Chunxu Li
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China; (C.L.); (Y.Z.); (J.T.)
| | - Yu Zhao
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China; (C.L.); (Y.Z.); (J.T.)
| | - Jingjing Tian
- Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China; (C.L.); (Y.Z.); (J.T.)
| | - Yuanhua Lin
- State Key Laboratory of Advanced Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; (X.S.); (H.W.)
- Correspondence: (F.S.); (Y.L.); Tel.: +86-010-62773741 (Y.L.)
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Ghorbanpour S, Pourhajibagher M, Noroozian M, Ghaffari H, Bahador A. Photoactivation of Curcumin Doped Poly-Lactic-Co-Glycolic Acid Nanoparticles in Rat Model with Fixed Orthodontic Appliances. ScientificWorldJournal 2022; 2022:3613345. [PMID: 35645633 PMCID: PMC9135542 DOI: 10.1155/2022/3613345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 03/01/2022] [Accepted: 04/29/2022] [Indexed: 11/17/2022] Open
Abstract
This study aimed to evaluate the antimicrobial effect of curcumin doped poly-lactic-co-glycolic acid nanoparticles (Cur-PLGA-Nps)-mediated antimicrobial photodynamic therapy (aPDT), as well as the probiotics on S. mutans in rats with fixed orthodontic appliances. Orthodontic appliances were ligated to the right maxillary of the rats. After the oral colonization of S. mutans, the rats were then treated in four groups including Cur-PLGA-Nps, light-emitting diode, Cur-PLGA-Nps-mediated aPDT, and probiotic (Lactobacillus acidophilus). After that, the S. mutans counts and the gtfB gene expression of S. mutans were determined on days 4, 7, 15, and 30. Probiotic and Cur-PLGA-Nps-mediated aPDT groups significantly reduced the count of S. mutans in a time-dependent manner (P < 0.05). So, probiotics and Cur-PLGA-Nps-mediated aPDT were able to reduce S. mutans more than other groups on the 30th day. Also, there was no considerable difference between Cur-PLGA-Nps-mediated aPDT and probiotic groups in bacterial growth inhibition. The expression level of gtfB gene was significantly downregulated at all-time intervals after exposure to Cur-PLGA-Nps-mediated aPDT compared with untreated bacteria (P < 0.05). According to the results, simultaneous use of Cur-PLGA-Nps-mediated aPDT and probiotic therapeutic approaches can be suggested to increase effectiveness.
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Affiliation(s)
- Sara Ghorbanpour
- Department of Microbiology, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Pourhajibagher
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Noroozian
- Department of Orthodontics, School of dentistry, Ilam University of Medical Sciences, Ilam, Iran
- Student Research Committee, School of dentistry, Ilam University of Medical Sciences, Ilam, Iran
| | - Hassanali Ghaffari
- Department of Orthodontics, School of Dentistry, Shahed University, Tehran, Iran
| | - Abbas Bahador
- Department of Microbiology, Tehran University of Medical Sciences, Tehran, Iran
- Clinical Laboratory Sciences, BioHealth Lab, Tehran, Iran
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35
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Pozdnyakov IP, Snytnikova OA, Yanshole VV, Fedunov RG, Grivin VP, Plyusnin VF. Direct UV photodegradation of herbicide triclopyr in aqueous solutions: A mechanistic study. Chemosphere 2022; 293:133573. [PMID: 35016955 DOI: 10.1016/j.chemosphere.2022.133573] [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] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/29/2021] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
Mechanism of direct UV photolysis of pyridine herbicide triclopyr (TRI) was revealed by the combination of nanosecond laser flash photolysis, steady-state photolysis coupled with high resolution LC-MS and DFT quantum-chemical calculations. Both the detection of short-lived intermediates and the detailed identification of final products were done for the first time. The quantum yield of TRI photodegradation is about 4% at both UVC (254 nm) and UVB (308 nm) excitation. The primary stage is the heterolytic cleavage of C-Cl bond in dissociative triplet state of TRI with the formation of phenyl cation followed by a fast nucleophilic attack by a solvent molecule. The minor channel is the photohydrolysis leading to the formation of 3,5,6-trichloropyridin-2-ol. Primary photoproducts undergo secondary photolysis by the mechanism similar to initial TRI with the formation of products of acetic group elimination, sequential substitution of chlorine atoms to hydroxyl groups and, finally, oxidation and opening of the pyridine ring. Obtained results can be important for understanding the fate of pyridine herbicides in the processes of UVC disinfection and in natural waters under action of the sunlight.
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Affiliation(s)
- Ivan P Pozdnyakov
- Novosibirsk State University, 630090, 2 Pirogova str, Novosibirsk, Russian Federation; Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, 630090, 3 Institutskaya str, Novosibirsk, Russian Federation.
| | - Olga A Snytnikova
- International Tomography Center SB RAS, 630090, 3a Institutskaya str, Novosibirsk, Russian Federation
| | - Vadim V Yanshole
- Novosibirsk State University, 630090, 2 Pirogova str, Novosibirsk, Russian Federation; International Tomography Center SB RAS, 630090, 3a Institutskaya str, Novosibirsk, Russian Federation
| | - Roman G Fedunov
- Novosibirsk State University, 630090, 2 Pirogova str, Novosibirsk, Russian Federation; Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, 630090, 3 Institutskaya str, Novosibirsk, Russian Federation
| | - Vyacheslav P Grivin
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, 630090, 3 Institutskaya str, Novosibirsk, Russian Federation
| | - Victor F Plyusnin
- Novosibirsk State University, 630090, 2 Pirogova str, Novosibirsk, Russian Federation; Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, 630090, 3 Institutskaya str, Novosibirsk, Russian Federation
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36
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Araya-Hermosilla R, Dervillé F, Cohn-Inostroza N, Picchioni F, Pescarmona PP, Poortinga A. Pickering Emulsions and Antibubbles Stabilized by PLA/PLGA Nanoparticles. Langmuir 2022; 38:182-190. [PMID: 34913697 DOI: 10.1021/acs.langmuir.1c02320] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Micrometer-sized double emulsions and antibubbles were produced and stabilized via the Pickering mechanism by colloidal interfacial layers of polymeric nanoparticles (NPs). Two types of nanoparticles, consisting either of polylactic acid (PLA) or polylactic-co-glycolic acid (PLGA), were synthesized by the antisolvent technique without requiring any surfactant. PLA nanoparticles were able to stabilize water-in-oil (W/O) emulsions only after tuning the hydrophobicity by means of a thermal treatment. A water-in-oil-in-water (W/O/W) emulsion was realized by emulsifying the previous W/O emulsion in a continuous water phase containing hydrophilic PLGA nanoparticles. Both inner and outer water phases contained a sugar capable of forming a glassy phase, while the oil was crystallizable upon freezing. Freeze drying the double emulsion allowed removing the oil and water and replacing them with air without losing the three-dimensional (3D) structure of the original emulsion owing to the sugar glassy phase. Reconstitution of the freeze-dried double emulsion in water yielded a dispersion of antibubbles, i.e., micrometric bubbles containing aqueous droplets, with the interfaces of the antibubbles being stabilized by a layer of adsorbed polymeric nanoparticles. Remarkably, it was possible to achieve controlled release of a flourescent probe (calcein) from the antibubbles through heating to 37 °C leading to bursting of the antibubbles.
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Affiliation(s)
- Rodrigo Araya-Hermosilla
- Chemical Engineering Group, Engineering and Technology Institute Groningen (ENTEG), University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación (PIDi), Universidad Tecnológica Metropolitana, Ignacio Valdivieso 2409, San Joaquín, Santiago 8940577, Chile
| | - Flora Dervillé
- Chemical Engineering Group, Engineering and Technology Institute Groningen (ENTEG), University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Nicolás Cohn-Inostroza
- Laboratory of Nanobiomaterials, Institute for Research in Dental Sciences, Faculty of Dentistry, University of Chile, Independencia 8380492, Chile
| | - Francesco Picchioni
- Chemical Engineering Group, Engineering and Technology Institute Groningen (ENTEG), University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Paolo P Pescarmona
- Chemical Engineering Group, Engineering and Technology Institute Groningen (ENTEG), University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Albert Poortinga
- Polymer Technology, Eindhoven University of Technology, Eindhoven 5612 AZ, The Netherlands
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Uyanik O, Pekkoc-Uyanik KC, Findik S, Avci A, Altuntas Z. Prevention of peritendinous adhesions with electrospun poly (lactic acid-co-glycolic acid) (PLGA) bioabsorbable nanofiber: An experimental study. Colloids Surf B Biointerfaces 2022; 209:112181. [PMID: 34742023 DOI: 10.1016/j.colsurfb.2021.112181] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 06/18/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 11/19/2022]
Abstract
In this study, we investigated the application of poly (lactic acid-co-glycolic acid) in the rat Achilles tendon injury model for the prevention or alleviation of peritendinous adhesion and guidance of Achilles tendon regeneration. In the study, 48 rats were used and the rats were randomized by closed envelope method and divided into 4 mating groups in groups of 12. Left Achilles tendons of the non-PLGA-treated control group (groups 1 and 2) were cut and repaired. In the PLGA-treated groups (groups 3 and 4) the left Achilles tendons were cut and repaired, then PLGA bioabsorbable material was wrapped around the repair line. The rats in the 1st and 3rd groups were sacrificed at the end of the 1st month, and the rats in the 2nd and 4th groups at the end of the 2nd month. The degree of tendon adhesion in the Group 3 was lower in comparison with Group 1. Similarly, compared with Group 2, the degree of tendon adhesion in the Group 4 was lower. Inflammatory density, vascularization and fibrosis were higher in the experimental group. When the Group 3 and Group 1, and Group 2 and Group 4 were compared, adhesion length (p = 0.004, p = 0.041), adhesion characteristics (p = 0.049, p = 0.039) and adhesion severity (p = 0.007, p = 0.025) were found have statistically significant tendon healing in the PLGA-treated group, respectively. Significant difference was observed in inflammatory cell density, vascular density and fibrosis for Group 1 and Group 3, (p = 0.027, p = 0.041, p = 0.002), respectively. Similarly, significant difference was observed in inflammatory cell density, vascular density and fibrosis for Group 2 and Group 4, (p = 0.002, p = 0.027, p = 0.011), respectively. As a result, it was considered that poly (lactic acid-co-glycolic acid) material significantly reduces peritendinous adhesions, and this effect could occur with the vascular density, inflammatory density and fibrosis as indicated in histopathological examination. These data suggest that PLGA membrane has good biocompatibility and alleviates tendon adhesion after injury.
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Affiliation(s)
- Orkun Uyanik
- Department of Plastic, Reconstructive and Aesthetic Surgery, Meram Faculty of Medicine, Necmettin Erbakan University, Konya, Turkey; Department of Plastic, Reconstructive and Aesthetic Surgery, University of Health Sciences, Basakşehir Çam ve Sakura City Hospital, Istanbul, Turkey.
| | | | - Siddika Findik
- Department of Patology, Meram Faculty of Medicine, Necmettin Erbakan University, Konya, Turkey
| | - Ahmet Avci
- Department of Biomedical Engineering, Faculty of Engineering and Architecture, Necmettin Erbakan University, Konya, Turkey
| | - Zeynep Altuntas
- Department of Plastic, Reconstructive and Aesthetic Surgery, Meram Faculty of Medicine, Necmettin Erbakan University, Konya, Turkey
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Luo Y, Li Y, Cao L, Zhu J, Deng B, Hou Y, Liang C, Huang C, Qin C, Yao S. High efficiency and clean separation of eucalyptus components by glycolic acid pretreatment. Bioresour Technol 2021; 341:125757. [PMID: 34411942 DOI: 10.1016/j.biortech.2021.125757] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/08/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
Glycolic acid has chemical properties similar to those of formic acid. Therefore, similar to formic acid pretreatment, glycolic acid pretreatment has the separation effect of hemicellulose. In this study, eucalyptus hemicellulose was effectively separated by glycolic acid pretreatment. The effects of glycolic acid concentration, temperature and time on the separation of cellulose, hemicellulose and lignin were investigated. The optimum conditions were acid concentration 5.40%, temperature 140 °C, time 3.0 h. The highest yield of xylose was 56.72%. The recovery rate of glycolic acid was 91%. Compared to formic acid, the yield of xylose increased to 10.33% while that of lignin decreased to 11.08%. It showed high selectivity for hemicellulose separation, yielding 65.48% hemicellulose with 72.08% purity. The depolymerization and repolymerization of lignin were inhibited. The integrity of the cellulose structure was preserved. It provides theoretical support for the fractional separation and high-value transformation of lignocellulosic biomass.
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Affiliation(s)
- Yadan Luo
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Yan Li
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Liming Cao
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Jiatian Zhu
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Baojuan Deng
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Yajun Hou
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Chen Liang
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Caoxing Huang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, PR China
| | - Chengrong Qin
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Shuangquan Yao
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, PR China.
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Souza MA, Bischoff KF, Rigo BDC, Piuco L, Didoné AVL, Bertol CD, Rossato-Grando LG, Bervian J, Cecchin D. Cytotoxicity of different concentrations of glycolic acid and its effects on root dentin microhardness - An in vitro study. AUST ENDOD J 2021; 47:423-428. [PMID: 33682987 DOI: 10.1111/aej.12494] [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: 04/13/2020] [Revised: 08/06/2020] [Accepted: 02/12/2021] [Indexed: 11/29/2022]
Abstract
The aim of the study was to evaluate the cytotoxicity of different glycolic acid concentrations (GA) and its effects on dentinal microhardness. Cytotoxicity was evaluated after inoculation of test irrigants in the lymphocyte primary culture for 3 min. The tested substances were distilled water(DW); 17% EDTA; QMix; 10% GA; 17% GA; and 25% GA. Counting of total, live and dead cells was performed, obtaining the average percentage of dead cells of each group. For microhardness evaluation, 60 root dentin samples were divided into the same tested groups (n = 10) and immersed in test irrigants for 3 min. Dentin microhardness was evaluated by Vicker test. Specific statistical analysis was made in both tests. Results showed significant lower cytotoxicity for QMix and 10% GA (P < 0.05). Moreover, all test irrigants presented similar values of microhardness than the control group (P > 0.05). In conclusion, lower GA concentration can be an alternative for final irrigation on endodontics.
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Affiliation(s)
- Matheus A Souza
- School of Dentistry, University of Passo Fundo, Passo Fundo, Brazil
| | | | - Bárbara D C Rigo
- School of Dentistry, University of Passo Fundo, Passo Fundo, Brazil
| | - Larissa Piuco
- School of Dentistry, University of Passo Fundo, Passo Fundo, Brazil
| | - Ana V L Didoné
- Institute of Biological Sciences, University of Passo Fundo, Passo Fundo, Brazil
| | - Charise D Bertol
- School of Pharmacy, University of Passo Fundo, Passo Fundo, Brazil
| | | | - Juliane Bervian
- School of Dentistry, University of Passo Fundo, Passo Fundo, Brazil
| | - Doglas Cecchin
- School of Dentistry, University of Passo Fundo, Passo Fundo, Brazil
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Curtis AN, Bidart MG. Increased Temperature Influenced Growth and Development of Lithobates pipiens Tadpoles Exposed to Leachates of the Invasive Plant European Buckthorn (Rhamnus cathartica) and a Triclopyr Herbicide. Environ Toxicol Chem 2021; 40:2547-2558. [PMID: 34143893 DOI: 10.1002/etc.5142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/17/2020] [Accepted: 06/16/2021] [Indexed: 06/12/2023]
Abstract
Multiple factors including habitat loss, pollutants, invasive species, and disease have contributed to the global decline of amphibians, and further declines can be expected as a result of climate change. Warming temperatures may allow for range expansion of invasive plants, and because herbicides are the primary method to control invasive plants, chemical use may increase. A laboratory experiment was performed to examine the individual and combined effects of leachates from the invasive plant European buckthorn (Rhamnus cathartica, L.) and a triclopyr herbicide (Renovate® 3; 0.21 mg/L), which is commonly used to manage R. cathartica, on northern leopard frog (Lithobates pipiens, Schreber) tadpoles at 2 temperature regimes (20 and 25 °C). We measured tadpole growth weekly and body and intestine morphology at the conclusion of the experiment after 8 wk. In the presence of R. cathartica leachates, tadpole growth increased at 25 °C, but only during the first 3 to 4 wk of the experiment. From week 5 until the end of the experiment, tadpoles were significantly smaller at 25 °C compared with 20 °C, but had more developed limb buds at the end of the experiment (except in the triclopyr treatment). Triclopyr had minimal effects on tadpole growth at the low dose used in this study. These results encourage further examination of potential effects of global climate changes in combination with other environmental factors that may impact amphibian populations. Environ Toxicol Chem 2021;40:2547-2558. © 2021 SETAC.
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Affiliation(s)
- Amanda N Curtis
- Department of Biological Sciences, Bowling Green State University, Bowling Green, Ohio, USA
| | - Maria Gabriela Bidart
- Department of Biological Sciences, Bowling Green State University, Bowling Green, Ohio, USA
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Modi A, Parmar S, Marfatiya Y. Comparative Efficacy Of 35% Glycolic Acid Peel vs. Jessner Peel as an Adjuvant to Topical Triple Combination (2% Hydroquinone, 0.025% Tretinoin, 0.01% Fluocinolone Acetonide) Therapy in Melasma Females Cases. J Cosmet Sci 2021; 72:418-431. [PMID: 35262482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Melasma is a common, acquired, circumscribed hypermelanosis of sun-exposed skin. It presents as symmetric, hyperpigmented macules having irregular, serrated, and geographic borders. Compare the efficacy of 35% gycolic acid (GA) peel vs. Jessner peel (JP) as an adjuvant to topical triple combination (2% Hydroquinone, 0.025% tretinoin, 0.01% Fluocinolone acetonide) therapy in Melasma in females. Sixty cases of Melasma attending Skin-VD OPD, Baroda Medical College from September 1, 2016 to July 30,/2017 were enrolled. Among them, 12% cases had history of menstrual irregularity, 5% cases had past history of oral contraceptive (OC) pill intake, and 10% cases had history of working outdoors. Most common pattern of melasma was centrofacial 32 cases (53%) which was followed by malar pattern in 27 cases (47%) and mandibular pattern in one case (2%). Fifty cases who completed study were evaluated for comparative efficacy of GA peel versus JP as an adjuvant to topical triple combination therapy. Average reduction in Melasma Area and Severity Index (MASI) score in cases treated with GA peel group was 58.56% with Jessner peel group was 59.12%. In GA peel group, 84% cases had moderate to good improvement, whereas in JP group 92% cases had moderate to good improvement. According to present study, safety and efficacy profile of 35% GA peel vs. JP was almost same. Both can be used as an adjuvant to topical triple combination therapy of 2% hydroquinone, 0.025% tretinoin, and 0.01% fluocinolone acetonide in females suffering from melasma. We recommend that it will be safer for the pregnant women to get the GA peel rather than the treatment containing hydroquinone and tretinoin since the activity/performance is very similar.
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Affiliation(s)
- Avani Modi
- Gmers Medical College, Vadnagar, Gujarat, India (A.M., S.P.), Department of Skin and V.D., Gmers Medical College, Vadnagar 384355, Gujarat, India Department of Skin & V.D., Medical College and S.S.G. Hospital Vadodara 390001, Gujarat, India
| | - Sweta Parmar
- Gmers Medical College, Vadnagar, Gujarat, India (A.M., S.P.), Department of Skin and V.D., Gmers Medical College, Vadnagar 384355, Gujarat, India Department of Skin & V.D., Medical College and S.S.G. Hospital Vadodara 390001, Gujarat, India
| | - Yogesh Marfatiya
- Gmers Medical College, Vadnagar, Gujarat, India (A.M., S.P.), Department of Skin and V.D., Gmers Medical College, Vadnagar 384355, Gujarat, India Department of Skin & V.D., Medical College and S.S.G. Hospital Vadodara 390001, Gujarat, India
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Da Costa Soares IC, Oriol R, Ye Z, Martínez-Huitle CA, Cabot PL, Brillas E, Sirés I. Photoelectro-Fenton treatment of pesticide triclopyr at neutral pH using Fe(III)-EDDS under UVA light or sunlight. Environ Sci Pollut Res Int 2021; 28:23833-23848. [PMID: 33175352 DOI: 10.1007/s11356-020-11421-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
One of the main challenges of electrochemical Fenton-based processes is the treatment of organic pollutants at near-neutral pH. As a potential approach to this problem, this work addresses the use of a low content of soluble chelated metal catalyst, formed between Fe(III) and ethylenediamine-N,N'-disuccinic (EDDS) acid (1:1), to degrade the herbicide triclopyr in 0.050 M Na2SO4 solutions at pH 7.0 by photoelectro-Fenton with UVA light or sunlight (PEF and SPEF, respectively). Comparison with electro-Fenton treatments revealed the crucial role of the photo-Fenton-like reaction, since this promoted the production of soluble Fe(II) that enhanced the pesticide removal. Hydroxyl radicals formed at the anode surface and in the bulk were the main oxidants. A boron-doped diamond (BDD) anode yielded a greater mineralization than an IrO2-based one, at the expense of reduced cost-effectiveness. The effect of catalyst concentration and current density on the performance of PEF with BDD was examined. The PEF trials in 0.25 mM Na2SO4 + 0.35 mM NaCl medium showed a large influence of generated active chlorine as oxidant, being IrO2 more suitable than RuO2 and BDD. In SPEF with BDD, the higher light intensity from solar photons accelerated the removal of the catalyst and triclopyr, with small effect on mineralization. A plausible route for the herbicide degradation by Fe(III)-EDDS-catalyzed PEF and SPEF is finally proposed based on detected byproducts: three heteroaromatic and four linear N-aliphatic compounds, formamide, and tartronic and oxamic acids.
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Affiliation(s)
- Izabelle C Da Costa Soares
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain
- Laboratório de Eletroquímica Ambiental e Aplicada, Instituto de Química, Universidade Federal do Rio Grande do Norte, Lagoa Nova, Natal, RN, 59072-900, Brazil
| | - Roger Oriol
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain
| | - Zhihong Ye
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain
- Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Carlos A Martínez-Huitle
- Laboratório de Eletroquímica Ambiental e Aplicada, Instituto de Química, Universidade Federal do Rio Grande do Norte, Lagoa Nova, Natal, RN, 59072-900, Brazil
| | - Pere L Cabot
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain
| | - Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain
| | - Ignasi Sirés
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain.
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Keskin C, Keleş A, Sarıyılmaz Ö. Efficacy of glycolic acid for the removal of calcium hydroxide from simulated internal Resorption cavities. Clin Oral Investig 2021; 25:4407-4413. [PMID: 33392806 DOI: 10.1007/s00784-020-03753-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 07/16/2020] [Accepted: 12/18/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVES This study evaluated the efficacy of 5% and 10% glycolic acid solutions for the removal of calcium hydroxide medicament from artificial internal resorption cavities. MATERIALS AND METHODS A total of 170 human maxillary premolars were selected and artificial internal resorption cavities were prepared using round burs and 37% orthophosphoric acid in the apical third of the root halves. Entire canal and resorption cavity were filled with calcium hydroxide paste. Then, the specimens were assigned to 2 control groups or ten experimental groups according to the irrigating solutions used for medicament removal with and without activation with ultrasonic energy as following: 5% glycolic acid, 10% glycolic acid, 17% EDTA, and 10% citric acid and distilled water. The resorption cavities were examined under different magnifications using stereomicroscopy and scanning electron microscopy (SEM). The calcium hydroxide remnants in the resorption cavity were scored by 2 evaluators using a 4-scoring scale. The data were analyzed with Kruskal-Wallis H tests with 5% significance threshold. RESULTS There was no significant difference regarding the distribution of removal scores among non-activated solutions (P > 0.05). In activated groups, 10% glycolic acid irrigation removed significantly more amount of calcium hydroxide than EDTA and distilled water (P < 0.05). No significant difference was found between the efficacy of 10% glycolic and citric acid (P > 0.05). Citric acid, 5% glycolic acid, and EDTA showed similar removal scores (P > 0.05). Passive ultrasonic irrigation significantly improved calcium hydroxide removal scores in 10% glycolic acid, citric acid, and EDTA groups (P < 0.05). The SEM examination revealed that the specimens that were scored 0 are not entirely free of calcium hydroxide remnants. CONCLUSION Concentration of 10% glycolic acid removed significantly more calcium hydroxide paste from resorption cavities than EDTA when used with passive ultrasonic irrigation. Although passive ultrasonic irrigation favored medicament removal in all irrigating solutions, complete elimination of medicament remnants was unattainable. CLINICAL RELEVANCE This study showed the improved efficacy of ultrasonically activated 10% glycolic acid in removing the calcium hydroxide medicament from the internal resorption cavity.
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Affiliation(s)
- Cangül Keskin
- Department of Endodontics, Faculty of Dentistry, Ondokuz Mayis University, 55200, Samsun, Turkey.
| | - Ali Keleş
- Department of Endodontics, Faculty of Dentistry, Ondokuz Mayis University, 55200, Samsun, Turkey
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Fu Y, Tan L, Meng L, Lei X. Therapeutic Effects of Paclitaxel Loaded Polyethylene Glycol-Polylactic Acid-Glycolic Acid Copolymer Nanoparticles on Pancreatic Cancer in Rats. J Nanosci Nanotechnol 2020; 20:7271-7275. [PMID: 32711590 DOI: 10.1166/jnn.2020.18608] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
To establish a simple and safe method for the preparation of paclitaxel PEG-PLGA nanoparticles emulsified in tpgs (PTX-pegpllga-np), for high drug loading; and to study its effect on proliferation and apoptosis of human pancreatic cancer cell line MIAPACA-2. PTX-PEG-PLGA-NP was prepared by one-step precipitation, using tpgs as emulsifier. The drug loading and particle size were used as an index to optimize the formulation, and the physical and chemical properties such as in vitro release and stability were characterized. The uptake of fluorescein coumarin 6 (C6) loaded PEG-PLGA-NP by MIAPACA-2 cells was observed by fluorescence microscope, and the growth and apoptosis of MIAPACA-2 cells after PTX-PEG-PLGA-NP were detected by MTT and flow cytometry respectively. The entrapment efficiency of the nanoparticles was 90.26%, the drug loading was 10.13%, the average particle size was 92.3±3.1 nm, and the zeta potential was 10.48±1.54 mV. The cumulative releases of nano preparation and general preparation (Taxol injection) in four hours were 25.9% and 98.5%, respectively; and the former had a strong sustained-release effect. The results of cell uptake experiments showed that the uptake of c6-PEG-PLGA-NP by MIAPACA-2 cells increased gradually with time. MTT results showed that PTX-PEG-PLGA-NP had no significant difference in the inhibition rate of MIAPACA-2 cells compared with PTX group. Flow cytometry showed that PTX-PEG-PLGAnp was superior better than PTX in inducing apoptosis in MIAPACA-2 cells. The tpgs emulsification method is simple and environment-friendly. The paclitaxel loaded nanoparticles prepared through the optimization of the formulation have large drug loading capacity and uniform particle size, which can target the pancreatic cancer MIAPACA-2 cells, and do not weaken its ability to inhibit the growth of MIAPACA-2 cells. The nanoparticles also induce apoptosis in cancer MIAPACA-2 cells, and could be used for further clinical treatment of pancreatic cancer.
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Affiliation(s)
- Yu Fu
- Department of Hepatobiliary and Pancreas Surgery, The First Hospital of Jilin University, Changchun 130021, Jilin, PR China
| | - Ludong Tan
- Department of Hepatobiliary and Pancreas Surgery, The First Hospital of Jilin University, Changchun 130021, Jilin, PR China
| | - Lingyu Meng
- Department of Hepatobiliary and Pancreas Surgery, The First Hospital of Jilin University, Changchun 130021, Jilin, PR China
| | - Xuexue Lei
- Department of Hepatobiliary and Pancreas Surgery, The First Hospital of Jilin University, Changchun 130021, Jilin, PR China
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Hwang TI, Lee SY, Lee DH, Park JK, Park CH, Kim CS. Fabrication of Bioabsorbable Polylactic-Co-Glycolic Acid/Polycaprolactone Nanofiber Coated Stent and Investigation of Biodegradability in Porcine Animal Model. J Nanosci Nanotechnol 2020; 20:5360-5364. [PMID: 32331104 DOI: 10.1166/jnn.2020.17674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Stent-mediated therapy is minimally invasive and fairly effective for the specific tissue and organs with tubal structures such as the esophagus, intestine, and blood vessels. Cerebral arteries are one of the most critical tubal structures to maintain the physiological function and the life of the human. Since the retrieval of the implanted vascular stent is difficult and risky, the one-step stent therapy is imperative. However, the placement of a current pipe-typed stent can also limit the nutritional supply to the vascular wall. Also, the non-degradable polymeric layer is possibly sensitized to the recipient as a foreign body after prolonged period after implantation. Herein, we developed PLGA/PCL nanofiber-coated stent for blocking the flow towards the aneurysm cavity as well as allowing nutritional support to the vessel with the biodegradability. The PLGA/PCL nanofiber-coated stent (NCS) was fabricated via electrospinning composite nanofibers onto a self-expandable mater metal stent. The as-fabricated NCS was physicochemically characterized using FT-IR, FE-SEM, and UTM, and experimented in vivo as implanted in porcine models and radiologically and histologically analyzed. The NCS demonstrated improved physicochemical properties for intracranial aneurysmal treatment including enhanced mechanical properties. The bioabsorbability of NCS was confirmed in the animal model.
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Affiliation(s)
- Tae In Hwang
- Department of Bionanosystem Engineering, Jeonbuk National University, Jeonju, 54896, Jeonbuk, Republic of Korea
| | - Seo Yeon Lee
- Department of Bionanosystem Engineering, Jeonbuk National University, Jeonju, 54896, Jeonbuk, Republic of Korea
| | - Do Hee Lee
- Department of Bionanosystem Engineering, Jeonbuk National University, Jeonju, 54896, Jeonbuk, Republic of Korea
| | - Jun-Kyu Park
- CGBio Co. Ltd, Jangseong, 14722, Republic of Korea
| | - Chan Hee Park
- Department of Bionanosystem Engineering, Jeonbuk National University, Jeonju, 54896, Jeonbuk, Republic of Korea
| | - Cheol Sang Kim
- Department of Bionanosystem Engineering, Jeonbuk National University, Jeonju, 54896, Jeonbuk, Republic of Korea
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Shi NQ, Zhou J, Walker J, Li L, Hong JKY, Olsen KF, Tang J, Ackermann R, Wang Y, Qin B, Schwendeman A, Schwendeman SP. Microencapsulation of luteinizing hormone-releasing hormone agonist in poly (lactic-co-glycolic acid) microspheres by spray-drying. J Control Release 2020; 321:756-772. [PMID: 31935481 DOI: 10.1016/j.jconrel.2020.01.023] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [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: 11/16/2019] [Revised: 01/02/2020] [Accepted: 01/10/2020] [Indexed: 11/23/2022]
Abstract
A spray drying technique was developed to prepare injectable and biodegradable poly(lactic-co-glycolic acid) (PLGA) microspheres encapsulating a model luteinizing hormone-releasing hormone agonist (LHRHa)-based peptide, leuprolide. Various spray drying parameters were evaluated to prepare 1-month controlled release formulations with a similar composition to the commercial Lupron Depot® (LD). A single water-in-oil emulsion of aqueous leuprolide/gelatin solution in PLGA 75/25 acid capped (13 kDa Mw) dissolved in methylene chloride (DCM) was spray-dried before washing the microspheres in cold ddH2O and freeze-drying. The spray-drying microencapsulation was characterized by: particle size/distribution (span), morphology, drug/gelatin loading, encapsulation efficiency, and residual DCM and water content. Long-term release was tested over 9 weeks in PBS + 0.02% Tween 80 + 0.02% sodium azide pH 7.4 (PBST) at 37 °C. Several physical-chemical parameters were monitored simultaneously for selected formulations, including: water uptake, mass loss, dry and hydrated glass transition temperature, to help understand the related long-term release profiles and explore the underlying controlled-release mechanisms. Compared with the commercial LD microspheres, some of the in-house spray-dried microspheres presented highly similar or even improved long-term release profiles, providing viable long-acting release (LAR) alternatives to the LD. The in vitro release mechanism of the peptide was shown to be controlled either by kinetics of polymer mass loss or by a second process, hypothesized to involve peptide desorption from the polymer. These data indicate spray drying can be optimized to prepare commercially relevant PLGA microsphere formulations for delivery of peptides, including the LHRHa, leuprolide.
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Affiliation(s)
- Nian-Qiu Shi
- Department of Pharmaceutical Sciences, The Biointerfaces Institute, University of Michigan, 2800 Plymouth Rd., Ann Arbor, MI 48109, USA; School of Pharmacy, Jilin Medical University, Jilin 132013, Jilin Province, China
| | - Jia Zhou
- Department of Pharmaceutical Sciences, The Biointerfaces Institute, University of Michigan, 2800 Plymouth Rd., Ann Arbor, MI 48109, USA
| | - Jennifer Walker
- Department of Pharmaceutical Sciences, The Biointerfaces Institute, University of Michigan, 2800 Plymouth Rd., Ann Arbor, MI 48109, USA
| | - Li Li
- School of Pharmaceutical Science, Liaoning University, Jilin 132013, Jilin Province, China
| | - Justin K Y Hong
- Department of Pharmaceutical Sciences, The Biointerfaces Institute, University of Michigan, 2800 Plymouth Rd., Ann Arbor, MI 48109, USA
| | - Karl F Olsen
- Department of Pharmaceutical Sciences, The Biointerfaces Institute, University of Michigan, 2800 Plymouth Rd., Ann Arbor, MI 48109, USA
| | - Jie Tang
- Department of Pharmaceutical Sciences, The Biointerfaces Institute, University of Michigan, 2800 Plymouth Rd., Ann Arbor, MI 48109, USA
| | - Rose Ackermann
- Department of Pharmaceutical Sciences, The Biointerfaces Institute, University of Michigan, 2800 Plymouth Rd., Ann Arbor, MI 48109, USA
| | - Yan Wang
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, 10903 New Hampshire Ave., Silver Spring, MD 20993, USA
| | - Bin Qin
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, 10903 New Hampshire Ave., Silver Spring, MD 20993, USA
| | - Anna Schwendeman
- Department of Pharmaceutical Sciences, The Biointerfaces Institute, University of Michigan, 2800 Plymouth Rd., Ann Arbor, MI 48109, USA
| | - Steven P Schwendeman
- Department of Pharmaceutical Sciences, The Biointerfaces Institute, University of Michigan, 2800 Plymouth Rd., Ann Arbor, MI 48109, USA; Department of Biomedical Engineering, University of Michigan, 2800 Plymouth Rd., Ann Arbor, MI 48109, USA.
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47
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Moungmoon T, Chaichana C, Pumas C, Pathom-Aree W, Ruangrit K, Pekkoh J. Quantitative analysis of methane and glycolate production from microalgae using undiluted wastewater obtained from chicken-manure biogas digester. Sci Total Environ 2020; 714:136577. [PMID: 31982736 DOI: 10.1016/j.scitotenv.2020.136577] [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] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 01/03/2020] [Accepted: 01/06/2020] [Indexed: 06/10/2023]
Abstract
Microalgal biomass is often used as a raw material in methane production. Some microalgae possess a complex cell-wall structure which has a low degradability of microorganisms in anaerobic digestion. However, some microalgae produce glycolate, which is excreted outside the cell and can be used to produce methane under anaerobic condition. This research aims to investigate microalgal cultivation using wastewater to reduce nutrients and efficiently create glycolate. Two strains of microalgae (Acutodesmus sp. AARL G023, Chlorella sp. AARL G049) and two microalgal consortia were cultivated at dilutions of 0.5-fold (W50), 0.75-fold (W75) and undiluted wastewater (W100). The results showed that the microalgal consortium with undiluted wastewater (WCW100) consisted of Leptolyngbya sp. (30.4%), Chlorella sp. (16.1%) and Chlamydomonas sp. (52.2%), revealed the highest biomass productivity at 64.38 ± 14.54 mg·L-1·d-1 and the highest glycolate productivity at 5.12 ± 0.48 mmol·L-1·d-1. The cultivation of microalgae effectively reduced ammonium‑nitrogen (NH4+-N) and soluble reactive phosphorus (SRP) levels in the wastewater at 43.5 ± 1.3% and 49.6 ± 6.9%. Furthermore, WCW100 showed the highest biogas productivity at 1.44 ± 0.07 mL·g-1·d-1 and the highest methane content at 58.3 ± 6.0% v/v. This study indicates that there is a definite potential of using undiluted wastewater for microalgal biomass production and glycolate production that can reduce the wastewater volume and be applied as a raw material for methane production.
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Affiliation(s)
- Thoranit Moungmoon
- PhD Degree Program in Environmental Science, Environmental Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chatchawan Chaichana
- Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chayakorn Pumas
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Wasu Pathom-Aree
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Khomsan Ruangrit
- Science and Technology Research Institute, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Jeeraporn Pekkoh
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Environmental Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
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48
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Li S, Xu Q, Zhao L, Ye C, Hua L, Liang J, Yu R, Liu H. Angiopep-2 Modified Cationic Lipid-Poly-Lactic-Co-Glycolic Acid Delivery Temozolomide and DNA Repair Inhibitor Dbait to Achieve Synergetic Chemo-Radiotherapy Against Glioma. J Nanosci Nanotechnol 2019; 19:7539-7545. [PMID: 31196258 DOI: 10.1166/jnn.2019.16775] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The therapeutic treatment of glioblastoma multiforme (GBM) remains a major challenge. Synergistic chemotherapy and radiotherapy (RT) have been considered the standard clinical therapy for malignant glioma, but there are some outstanding problems. First, gliomas are deemed exceedingly radio-resistant tumors, owing to efficient DNA double-strand break repair. In addition, the first-line chemotherapeutic agent (temozolomide, TMZ) for glioma shows extensive side effects and low accumulation in brain tumors. Therefore, we designed and constructed an Angiopep-2 modified cationic lipid-Poly-lactic-co-glycolic acid (PLGA), Angiopep-2 (A2)/DSPE-PEG2000/DOTAP/PLGA (APDP), to transport TMZ and a DNA repair inhibitor (Dbait) into glioblastoma cells, achieving concomitant chemo-radiotherapy treatment of glioma. At the cellular level, the APDP+TMZ/Dbait can be well endocytosed and enhance accumulation of the agent in brain tumors. Furthermore, the nanoparticle combined with Dbait improves the efficiency of radiotherapy in GBM. Our experimental data demonstrate that APDP+TMZ/Dbait has great potential as a multipurpose nanomedicine for the synergistic chemo-radiotherapy and radio-sensitization of malignant glioma in precise medical applications.
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Affiliation(s)
- Shun Li
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, 221002, PR China
| | - Qian Xu
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, 221002, PR China
| | - Liang Zhao
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, 221002, PR China
| | - Chengkun Ye
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, 221002, PR China
| | - Lei Hua
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, 221002, PR China
| | - Jun Liang
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, 221002, PR China
| | - Rutong Yu
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, 221002, PR China
| | - Hongmei Liu
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, 221002, PR China
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49
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Jeong JH, Kang SH, Kim DK, Lee NS, Jeong YG, Han SY. Protective Effect of Cholic Acid-Coated Poly Lactic-Co-Glycolic Acid (PLGA) Nanoparticles Loaded with Erythropoietin on Experimental Stroke. J Nanosci Nanotechnol 2019; 19:6524-6533. [PMID: 31026988 DOI: 10.1166/jnn.2019.17078] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Stroke is a major cause of adult mortality and morbidity worldwide. However, the treatment of stroke using the vast majority of possible drug candidates, including erythropoietin (EPO), remains problematic because of the presence of the blood-brain barrier (BBB), resulting in scarce penetration onto the brain. To overcome this, we synthesized a novel EPO delivery system, namely the cholic acid-coated poly lactic-co-glycolic acid (PLGA) nanoparticles loaded with EPO (EPO-CA-NPs), with the aim of enabling efficient penetration of EPO-CA-NPs across the BBB. The therapeutic efficacy of EPO-CA-NPs on an animal model of stroke was compared with that of EPO. The experimental stroke model was produced by subjecting rats to the middle carotid artery occlusion and reperfusion (MCAO/R) technique. The results indicated that EPO-CA-NPs reduced the extent of the infarct volume and cellular apoptosis to a greater extent than EPO alone at postoperative day (POD) 1. Furthermore, EPO-CA-NPs showed better performance on sensorimotor functions than EPO alone at POD 1, 3, 5, and 7. Taken together, EPO-CA-NPs, a newly synthesized brain-targeted EPO-delivery system, has stronger therapeutic effects on stroke than EPO alone, by enabling efficient EPO delivery into the brain.
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Affiliation(s)
- Ji Heun Jeong
- Department of Anatomy, College of Medicine, Konyang University, Daejeon, 35365, South Korea
| | - Seong Hee Kang
- Research Division for Biotechnology, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Insitute (KAERI), 29 Geumgu-gil, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea
| | - Do Kyung Kim
- Department of Anatomy, College of Medicine, Konyang University, Daejeon, 35365, South Korea
| | - Nam-Seob Lee
- Department of Anatomy, College of Medicine, Konyang University, Daejeon, 35365, South Korea
| | - Young-Gil Jeong
- Department of Anatomy, College of Medicine, Konyang University, Daejeon, 35365, South Korea
| | - Seung-Yun Han
- Department of Anatomy, College of Medicine, Konyang University, Daejeon, 35365, South Korea
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50
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Li J, Weraduwage SM, Preiser AL, Tietz S, Weise SE, Strand DD, Froehlich JE, Kramer DM, Hu J, Sharkey TD. A Cytosolic Bypass and G6P Shunt in Plants Lacking Peroxisomal Hydroxypyruvate Reductase. Plant Physiol 2019; 180:783-792. [PMID: 30886114 PMCID: PMC6548278 DOI: 10.1104/pp.19.00256] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 03/11/2019] [Indexed: 05/18/2023]
Abstract
The oxygenation of ribulose 1,5-bisphosphate by Rubisco is the first step in photorespiration and reduces the efficiency of photosynthesis in C3 plants. Our recent data indicate that mutants in photorespiration have increased rates of photosynthetic cyclic electron flow around photosystem I. We investigated mutant lines lacking peroxisomal hydroxypyruvate reductase to determine if there are connections between 2-phosphoglycolate accumulation and cyclic electron flow in Arabidopsis (Arabidopsis thaliana). We found that 2-phosphoglycolate is a competitive inhibitor of triose phosphate isomerase, an enzyme in the Calvin-Benson cycle that converts glyceraldehyde 3-phosphate to dihydroxyacetone phosphate. This block in metabolism could be overcome if glyceraldehyde 3-phosphate is exported to the cytosol, where cytosolic triose phosphate isomerase could convert it to dihydroxyacetone phosphate. We found evidence that carbon is reimported as glucose-6-phosphate, forming a cytosolic bypass around the block of stromal triose phosphate isomerase. However, this also stimulates a glucose-6-phosphate shunt, which consumes ATP, which can be compensated by higher rates of cyclic electron flow.
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Affiliation(s)
- Jiying Li
- Michigan State University-Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
| | - Sarathi M Weraduwage
- Michigan State University-Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
| | - Alyssa L Preiser
- Michigan State University-Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
| | - Stefanie Tietz
- Michigan State University-Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
| | - Sean E Weise
- Michigan State University-Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824
| | - Deserah D Strand
- Michigan State University-Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
| | - John E Froehlich
- Michigan State University-Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824
| | - David M Kramer
- Michigan State University-Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824
| | - Jianping Hu
- Michigan State University-Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
- Department of Plant Biology, Michigan State University, East Lansing, Michigan 48824
| | - Thomas D Sharkey
- Michigan State University-Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824
- Plant Resilience Institute, Michigan State University, East Lansing, Michigan 48824
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