1
|
Sorensen RM, Savić-Zdravković D, Jovanović B. Changes in the wing shape and size in fruit flies exposed to micro and nanoplastics. CHEMOSPHERE 2024; 363:142821. [PMID: 38986775 DOI: 10.1016/j.chemosphere.2024.142821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 07/07/2024] [Accepted: 07/08/2024] [Indexed: 07/12/2024]
Abstract
Geometric morphometrics analysis (GMA) is a well-known technique to identify minute changes in Drosophila wings. This study aimed to determine potential changes in Drosophila wings shape and size after exposure to polystyrene nanoplastics (NPs) (50 nm) and microplastics (MPs) (1 μm). Flies were exposed from eggs to pupal eclosion and analyzed using GMA. Results revealed a difference in shape and size between male and female wings, as expected, due to sexual dimorphism. Therefore, wings were analyzed by sex. Wings of MPs and NPs treated females were elongated compared to controls and had a constriction of the wing joint. Additionally, MPs treated female flies had the most dissimilar shape compared to controls. In male flies, NPs flies had smaller wings compared to MPs and control flies. Compared to control, NPs wings of males were shrunken at the joint and in the entire proximal region of the wing. However, male MPs wings had a narrower anal region and were slightly elongated. These results reveal that wing shape and size can change in a different way based on the sex of the flies and size of plastic particles that larvae interacted with. All the changes in the wings occurred only within the normally allowed wing variation and treatment with NPs/MPs did not cause development of the aberrant phenotypes. Results can pave the way for further understanding of how MPs and NPs can alter phenotypes of flies.
Collapse
Affiliation(s)
- Rachel M Sorensen
- Department of Ecology, Evolution, and Organismal Biology, Iowa State University, Ames, IA, USA.
| | - Dimitrija Savić-Zdravković
- Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, Niš, 18000, Serbia.
| | - Boris Jovanović
- Department of Ecology, Evolution, and Organismal Biology, Iowa State University, Ames, IA, USA.
| |
Collapse
|
2
|
Zhao Y, Ge W, Chen H, Yang Y, Xu Z. The effect of a soft diet on molar dentin formation during the occlusal establishment period. Arch Oral Biol 2024; 158:105858. [PMID: 38056229 DOI: 10.1016/j.archoralbio.2023.105858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/04/2023] [Accepted: 11/25/2023] [Indexed: 12/08/2023]
Abstract
OBJECTIVE This study intends to investigate the effect of a soft food diet on molar dentin formation during the occlusal establishment period. It can provide dietary guidance for infants to strengthen their dental structure. DESIGN 60 BALB/c mice were used to obtain mandibles during lactation (P0.5, P7.5, P15.5, P21.5) and occlusal establishment (P27.5, P33.5, P60.5). The mice were randomly divided into soft or hard diet groups after weaning at day 21.5. Hematoxylin-eosin and aniline blue staining were used to observe the morphology and number of odontoblasts and the amount of molar dentin formation. Immunohistochemistry was performed to observe the proliferation and apoptosis of odontoblasts. The in vivo fluorescence double-labeling was applied to evaluate the rate of molar dentin formation. RESULTS The soft diet group had poorer periodontal membrane development but more cervical dentin deposition. Alterations in morphology and the number of odontoblasts showed a stronger correlation with age rather than food hardness. There are no significant differences in proliferative and apoptotic behavior of dentin-forming cells between the two groups. Rather, it affected the rate of dentin deposition. The rate of dentin deposition was high in the soft diet group from P21.5 to P27.5, but it was surpassed by the hard diet group within P27.5-P33.5, and the difference between the two groups disappeared at P33.5-P60.5. CONCLUSIONS A soft diet promotes molar early cervical dentin formation. This advantage is caused by an enhanced odontoblast secretion rate rather than affecting the morphology, number, proliferation, or apoptosis of odontoblasts.
Collapse
Affiliation(s)
- Yuan Zhao
- From the Department of Operative Dentistry and Endodontics, School/Hospital of Stomatology Lanzhou University, Lanzhou, Gansu, China.
| | - Wei Ge
- From the Department of Operative Dentistry and Endodontics, School/Hospital of Stomatology Lanzhou University, Lanzhou, Gansu, China; From the Lanzhou Stomatology Hospital, Lanzhou, Gansu, China
| | - Hong Chen
- From the Department of Operative Dentistry and Endodontics, School/Hospital of Stomatology Lanzhou University, Lanzhou, Gansu, China
| | - Yanduo Yang
- From the Department of Operative Dentistry and Endodontics, School/Hospital of Stomatology Lanzhou University, Lanzhou, Gansu, China
| | - Zuda Xu
- From the Department of Operative Dentistry and Endodontics, School/Hospital of Stomatology Lanzhou University, Lanzhou, Gansu, China
| |
Collapse
|
3
|
Tsolakis IA, Verikokos C, Perrea D, Perlea P, Alexiou KE, Yfanti Z, Lyros I, Georgaki M, Papadopoulou E, Tsolakis AI. Effects of Diet Consistency on Rat Maxillary and Mandibular Growth within Three Generations-A Longitudinal CBCT Study. BIOLOGY 2023; 12:1260. [PMID: 37759659 PMCID: PMC10526017 DOI: 10.3390/biology12091260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 09/07/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023]
Abstract
BACKGROUND In this study, wistar rats were used to examine the impact of diet consistency on maxillary and mandibular growth over three generations. METHODS In this investigation, a breeding sample of 60 female and 8 male wistar rats was used. Measuring was only performed on female animals. The first generation's primary breeding sample consisted of 20 female wistar rats that were 30 days old and 4 male rats that were also 30 days old; two subsequent generations were created from these animals. At the age of 100 days, CBCTs were collected of all male rats. Twenty-eight craniofacial landmarks were selected for the linear measurements on stl format extracted from the DICOM files. A Bonferroni test was performed for the statistical analysis. RESULTS Means of measurements of all soft diet groups compared to corresponding measurements of the hard diet groups were significantly different. According to linear measurements, there was statistical difference on the maxillary measurements between the soft diet groups of the first and third generation, while the rest did not appear to have any statistical difference. There was significant difference for the mandibular dimensions only when the first generation soft diet group was compared with the third generation soft diet group. CONCLUSIONS Food consistency has a significant impact on the growth and development of the maxilla and mandible. Soft diet habits may result in retrognathic mandible, and narrower maxilla.
Collapse
Affiliation(s)
- Ioannis A. Tsolakis
- Department of Orthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Department of Orthodontics, Case Western Reserve University School of Dental Medicine, Cleveland, OH 44106-7342, USA
| | - Christos Verikokos
- Second Department of Surgery, “Laikon Hospital”, School of Medicine, National and Kapodistrian University of Athens, 15772 Athens, Greece
| | - Despoina Perrea
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, National and Kapodistrian University of Athens, 15772 Athens, Greece
| | - Paula Perlea
- Department of Endodontics, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Konstantina-Eleni Alexiou
- Department of Oral Diagnosis & Radiology, School of Dentistry, National and Kapodistrian University of Athens, 10679 Athens, Greece
| | - Zafeiroula Yfanti
- Department of Oral Diagnosis & Radiology, School of Dentistry, National and Kapodistrian University of Athens, 10679 Athens, Greece
| | - Ioannis Lyros
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 15772 Athens, Greece
| | - Maria Georgaki
- Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Erofili Papadopoulou
- Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Apostolos I. Tsolakis
- Department of Orthodontics, Case Western Reserve University School of Dental Medicine, Cleveland, OH 44106-7342, USA
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 15772 Athens, Greece
| |
Collapse
|
4
|
Kotantoula G, Tsolakis IA, Lyros I, Makrygiannakis MA, Kanareli C, Dalampira M, Tsolakis AI. Effects on Facial Growth Following Masseter Muscle Resection in Growing Rats-A Systematic Review. Animals (Basel) 2023; 13:ani13101680. [PMID: 37238110 DOI: 10.3390/ani13101680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 05/05/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
An individual's facial appearance is heavily influenced by facial symmetry. In the asymmetric mandible, periosteal apposition and endochondral ossification in one of the condyles may stimulate asymmetric growth of the body. Our aim was to review the impact on the growth following masseter resection. Relevant studies up to October 2022 were retrieved from PubMed, Scopus, and Web of Science. The PICOS method was utilized to determine eligibility, and the SYRCLE risk of bias tool was utilized to provide an estimate of potential bias. A predetermined algorithm was used to search the databases. The results of our systematic review of seven studies indicate that the masseter muscle strongly impacts craniofacial growth and development. Resection of the masseter muscle significantly reduces the sagittal and vertical development of the jaw in rats. In addition, the masseter muscle excision influences the mandibular morphology, including the condylar area, angle, and development direction of the jaw.
Collapse
Affiliation(s)
- Georgia Kotantoula
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Ioannis A Tsolakis
- Department of Orthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Department of Orthodontics, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Ioannis Lyros
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Miltiadis A Makrygiannakis
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | | | | | - Apostolos I Tsolakis
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Department of Orthodontics, Case Western Reserve University, Cleveland, OH 44106, USA
| |
Collapse
|
5
|
Tsolakis IA, Verikokos C, Papaioannou W, Alexiou KE, Yfanti Z, Perrea D, Tsolakis AI. Long-Term Effect of Diet Consistency on Mandibular Growth within Three Generations: A Longitudinal Cephalometric Study in Rats. BIOLOGY 2023; 12:biology12040568. [PMID: 37106767 PMCID: PMC10136091 DOI: 10.3390/biology12040568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 04/03/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023]
Abstract
BACKGROUND This study investigated the effect of diet consistency on mandibular growth of Wistar rats through three generations. METHODS A total breeding sample of 60 female and 8 male Wistar rats were used in this study. Measurements took place only on female animals. Twenty female Wistar rats at 30 days old and four male rats at 30 days old comprised the primary breeding sample of the first generation, and from these animals two different generations were reproduced. Lateral cephalometric X-rays were taken from all female rats at the age of 100 days. A total of 7 craniofacial landmarks were selected for the linear measurements, and 12 curves and 90 landmarks were selected for geometric morphometric analysis of the lateral X-rays. Bonferroni test and a permutation test were performed for the statistical analysis. RESULTS Means of measurements of all soft diet groups compared to hard diet groups were significantly smaller. According to linear measurements, there was a significant difference only between the first-generation soft diet with the third-generation soft diet group. According to geometric morphometric analysis, the statistical differences appeared on the condylar process and the angle of the mandible. CONCLUSIONS The soft diet could be responsible for less mandibular growth, and this information might be passing through generations.
Collapse
Affiliation(s)
- Ioannis A Tsolakis
- Department of Orthodontics, School of Dentistry, Aristotle University of Thessaloniki, 54154 Thessaloniki, Greece
- Department of Orthodontics, Case Western Reserve University School of Dental Medicine, Cleveland, OH 44106, USA
| | - Christos Verikokos
- Second Department of Surgery, "Laikon Hospital", School of Medicine, National and Kapodistrian University of Athens, 10679 Athens, Greece
| | - William Papaioannou
- Department of Preventive & Community Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 10679 Athens, Greece
| | - Konstantina-Eleni Alexiou
- Department of Oral Diagnosis & Radiology, School of Dentistry, National and Kapodistrian University of Athens, 10679 Athens, Greece
| | - Zafeiroula Yfanti
- Department of Oral Diagnosis & Radiology, School of Dentistry, National and Kapodistrian University of Athens, 10679 Athens, Greece
| | - Despoina Perrea
- Laboratory of Experimental Surgery and Surgical Research, School of Medicine, National and Kapodistrian University of Athens, 10679 Athens, Greece
| | - Apostolos I Tsolakis
- Department of Orthodontics, Case Western Reserve University School of Dental Medicine, Cleveland, OH 44106, USA
- Department of Orthodontics, National and Kapodistrian University of Athens, School of Dentistry, 10679 Athens, Greece
| |
Collapse
|
6
|
Matthaios S, Tsolakis AI, Haidich AB, Galanis I, Tsolakis IA. Dental and Skeletal Effects of Herbst Appliance, Forsus Fatigue Resistance Device, and Class II Elastics-A Systematic Review and Meta-Analysis. J Clin Med 2022; 11:jcm11236995. [PMID: 36498570 PMCID: PMC9741176 DOI: 10.3390/jcm11236995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/13/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022] Open
Abstract
Background: Our study aimed to systematically summarize the dentoskeletal effects of Herbst appliance; Forsus fatigue resistance device; and Class II elastics in adolescent Class II malocclusion. Methods: Five databases; unpublished literature; and reference lists were last searched in August 2022. Randomized clinical trials and observational studies of at least 10 Class II growing patients that assessed dentoskeletal effects through cephalometric/CBCT superimpositions were eligible. The included studies quality was assessed with the RoB 2 and ROBINS-I tools. A random-effects model meta-analysis was performed. Heterogeneity was explored with subgroup and sensitivity analyses. Results: Among nine studies (298 patients); two-to-three studies were included in each meta-analysis. Less post-treatment upper incisor retroclination (<2) and no overbite; overjet; SNA; SNB; and lower incisor inclination differences were found between Herbst/Forsus and Class II elastics. No differences in maxilla; condyle; glenoid fossa; and most mandibular changes were found between Herbst and Class II elastics; except for a greater 1.5 mm increase in mandibular length and right mandibular ramus height (1.6 mm) with Herbst. Conclusions: Herbst and Class II elastics corrected the molar relationship; but Herbst moved the lower molars more mesially. Apart from an additional mandibular length increase; no other dental and anteroposterior skeletal difference was found. Forsus was more effective in molar correction; overjet reduction; and upper incisor control than Class II elastics. Trial registration number OSF: 10.17605/OSF.IO/8TK3R.
Collapse
Affiliation(s)
- Stefanos Matthaios
- Department of Orthodontics, School of Dental Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
- Correspondence:
| | - Apostolos I. Tsolakis
- Department of Orthodontics, School of Dental Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Anna-Bettina Haidich
- Department of Hygiene, Social-Preventive Medicine & Medical Statistics, Medical School, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Ioannis Galanis
- 2nd Propaedeutic Department of Surgery, Medical School, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Ioannis A. Tsolakis
- Department of Orthodontics, School of Dental Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
- Department of Orthodontics, School of Dentistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| |
Collapse
|
7
|
Lyros I, Perrea D, Tosios K, Nikitakis N, Tsolakis IA, Ferdianakis E, Fora E, Lykogeorgos T, Maroulakos MP, Vardas E, Georgaki M, Papadopoulou E, Tsolakis AI. Histological and Biochemical Analysis after Posterior Mandibular Displacement in Rats. Vet Sci 2022; 9:vetsci9110625. [PMID: 36356102 PMCID: PMC9697094 DOI: 10.3390/vetsci9110625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/27/2022] [Accepted: 11/07/2022] [Indexed: 11/13/2022] Open
Abstract
Simple Summary The lower jaw has a particular contribution to the human appearance, and so it is not uncommon for people to seek treatment in cases of its extreme growth. The orthodontist often selects to place intraoral devices in order to address the problem. This study used healthy young rats to guide their lower jaws backward. Measurements of biochemical molecules in blood that are related to bone metabolism did not reveal any statistically significant differences. However, noteworthy local microscopic alterations of the condyle were evidenced. They involved histological changes in bone structure and the thickness of cartilage. In conclusion, it seems that the procedure under study might not cause any severe organic disturbance in the lab animals under the conditions of the experiment. Only minor histological effects on condylar morphology were observed. Abstract The present study aimed to investigate any biochemical and histological changes of the rat condyle and mandible in animals that had sustained mandibular growth restriction. Seventy-two male Wistar rats were divided into two equal groups, experimental and control. Each group consisted of three equal subgroups. The animals were sacrificed 30, 60, and 90 days after the start of the experiment. Blood samples were collected from the eye, and the osteoprotegerin (OPG), Receptor Activator of Nuclear Factor Kappa B Ligand (RANKL), and Macrophage Colony-Stimulating factor (MCSF)concentrations were measured by using enzyme-linked immunosorbent assay (ELISA) kits. A histological analysis was performed on the mandibular condyles. The blood serum values of OPG, RANKL, and MCSF did not exhibit any statistically significant difference between groups or subgroups. However, significant histological changes became evident after a histomorphometric condylar examination was performed. The Bone Surface/Total Surface ratio appeared reduced in the anterior and posterior regions of the condyle. In addition, the Posterior Condylar Cartilage Thickness was measured and determined to be significantly diminished. The present intervention that employed orthodontic/orthopedic devices did not prove to have any significant effect on the circulating proteins under study. Posterior displacement of the mandible may culminate only in local histological alterations in condylar cartilage thickness and its osseous microarchitecture.
Collapse
Affiliation(s)
- Ioannis Lyros
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Correspondence:
| | - Despoina Perrea
- Laboratory of Experimental Surgery and Surgical Research “N.S. Christeas”, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Konstantinos Tosios
- Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Nikolaos Nikitakis
- Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Ioannis A. Tsolakis
- Department of Orthodontics, School of Dentistry, Aristotle University of Thessaloniki, 54623 Thessaloniki, Greece
| | - Efstratios Ferdianakis
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Eleni Fora
- Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | | | - Michael P. Maroulakos
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Emmanouil Vardas
- Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Maria Georgaki
- Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Erofili Papadopoulou
- Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Apostolos I. Tsolakis
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Department of Orthodontics, Case Western Reserve University, Cleveland, OH 44106, USA
| |
Collapse
|
8
|
Anterior Mandibular Displacement in Growing Rats—A Systematic Review. Animals (Basel) 2022; 12:ani12162059. [PMID: 36009649 PMCID: PMC9405253 DOI: 10.3390/ani12162059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/06/2022] [Accepted: 08/07/2022] [Indexed: 12/17/2022] Open
Abstract
Simple Summary Mandibular deficiency is a very common orthodontic problem. Many different types of appliances have been utilized to correct such malocclusions. Most are appliances that alter the function of the mandible resulting in a more forward positioning of the lower jaw. Many researchers state that such an alteration results in a different rate of mandibular growth, due to condyle endochondral ossification, thus correcting the orthodontic anomaly. Their effect though remains controversial. The aim of the present study was to investigate the effect of such functional appliances in the mandible of growing rats by reviewing the existing literature up to March of 2022. Most of them stated that true condylar growth is observed, although there are many limitations due to the nature of such experiments. Abstract Skeletal Class II malocclusion is the most common skeletal anomaly in orthodontics. Growth in the body of the deficient mandible is induced by periosteal apposition and endochondral ossification in the condyle. Functional appliances have been used in the correction of Class II malocclusions by inducing mandibular growth. Despite their utilization though, their effect still remains controversial. The aim of the present study is to review the existing literature regarding the effects of mandibular protrusion in mandibular growth of growing rats. A protocol was followed according to the guidelines of the Cohrane Handbook for Systematic Reviews. Databases were searched using a specific algorithm. From the ten studies finally analyzed, we conclude that the use of a functional appliance in growing rats induces cell proliferation and bone formation in their condyles, resulting in mandibular growth.
Collapse
|