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Acharya B, Dey S, Sahu PK, Behera A, Chowdhury B, Behera S. Perspectives on chick embryo models in developmental and reproductive toxicity screening. Reprod Toxicol 2024; 126:108583. [PMID: 38561097 DOI: 10.1016/j.reprotox.2024.108583] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 03/18/2024] [Accepted: 03/27/2024] [Indexed: 04/04/2024]
Abstract
Teratology, the study of congenital anomalies and their causative factors intersects with developmental and reproductive toxicology, employing innovative methodologies. Evaluating the potential impacts of teratogens on fetal development and assessing human risk is an essential prerequisite in preclinical research. The chicken embryo model has emerged as a powerful tool for understanding human embryonic development due to its remarkable resemblance to humans. This model offers a unique platform for investigating the effects of substances on developing embryos, employing techniques such as ex ovo and in ovo assays, chorioallantoic membrane assays, and embryonic culture techniques. The advantages of chicken embryonic models include their accessibility, cost-effectiveness, and biological relevance to vertebrate development, enabling efficient screening of developmental toxicity. However, these models have limitations, such as the absence of a placenta and maternal metabolism, impacting the study of nutrient exchange and hormone regulation. Despite these limitations, understanding and mitigating the challenges posed by the absence of a placenta and maternal metabolism are critical for maximizing the utility of the chick embryo model in developmental toxicity testing. Indeed, the insights gained from utilizing these assays and their constraints can significantly contribute to our understanding of the developmental impacts of various agents. This review underscores the utilization of chicken embryonic models in developmental toxicity testing, highlighting their advantages and disadvantages by addressing the challenges posed by their physiological differences from mammalian systems.
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Affiliation(s)
- Biswajeet Acharya
- School of Pharmacy, Centurion University of Technology and Management, Odisha, India; State Forensic Laboratory, Bhubaneswar, Odisha, India
| | - Sandip Dey
- Birla Institute of Technology, Mesra, Ranchi, Jharkhand, India; State Forensic Laboratory, Bhubaneswar, Odisha, India
| | - Prafulla Kumar Sahu
- School of Pharmacy, Centurion University of Technology and Management, Odisha, India; State Forensic Laboratory, Bhubaneswar, Odisha, India.
| | - Amulyaratna Behera
- School of Pharmacy, Centurion University of Technology and Management, Odisha, India; State Forensic Laboratory, Bhubaneswar, Odisha, India.
| | - Bimalendu Chowdhury
- Roland Institute of Pharmaceutical Sciences, Khodasingi, Brahmapur, Odisha, India; State Forensic Laboratory, Bhubaneswar, Odisha, India
| | - Suchismeeta Behera
- Roland Institute of Pharmaceutical Sciences, Khodasingi, Brahmapur, Odisha, India; State Forensic Laboratory, Bhubaneswar, Odisha, India
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2
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Khanom S, Astill D, Astill N, Cozens J, Mann B, Garratt J, Bromley RL. The lived experience of young adults with Fetal Valproate Spectrum Disorder, and the perspective of their parents: A qualitative study. Epilepsy Behav 2024; 152:109680. [PMID: 38335859 DOI: 10.1016/j.yebeh.2024.109680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/28/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024]
Abstract
BACKGROUND While research has investigated the physical and neurodevelopmental consequences following prenatal exposure to valproate, our understanding of individuals with a formal diagnosis of Fetal Valproate Spectrum Disorder (FVSD), particularly in the context of adulthood, remains limited. AIM To investigate how symptoms and challenges of FVSD present in adulthood. METHODS 30 people took part in the study, including 13 young adults aged between 21 and 37 years, 15 mothers, and 2 fathers. In all cases, valproate had been used for the treatment of maternal epilepsy. Data were collected using semi-structured interviews and analysed using thematic analysis. RESULTS Six broad themes were identified: 1. Health and development, 2. Employment, 3. Daily living and independence, 4. Social skills and relationships, 5. Access to services, and 6. Impact on families. Individuals with FVSD live with an array of physical, mental, and developmental challenges that extend well beyond childhood, significantly altering their life course and that of their families. Challenges in obtaining employment, achieving independent living, and navigating social and romantic relationships become increasingly significant as individuals with FVSD age. Despite their persistent need for support, services for adults with FVSD are either limited or entirely absent. Recommendations from families were provided regarding optimized support systems. CONCLUSION This study highlights the lifelong physical, cognitive, emotional, social and behavioural symptoms associated with FVSD. Young adults and their parents desire further research regarding the condition along with improved support and health services in adulthood.
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Affiliation(s)
- S Khanom
- Division of Neuroscience, Faculty of Biology, Medicine and Health, the University of Manchester, Manchester, UK; Paediatric Psychosocial Department, Royal Manchester Children's Hospital, Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - D Astill
- Foetal Anti-Convulsant Syndrome New Zealand, Auckland, New Zealand
| | - N Astill
- Foetal Anti-Convulsant Syndrome New Zealand, Auckland, New Zealand
| | - J Cozens
- Organisation of Anti-Convulsant Syndromes, Caerphilly, Wales, UK
| | - B Mann
- Organisation of Anti-Convulsant Syndromes, Caerphilly, Wales, UK
| | - J Garratt
- Foetal Anti-Convulsant Syndrome New Zealand, Auckland, New Zealand
| | - R L Bromley
- Division of Neuroscience, Faculty of Biology, Medicine and Health, the University of Manchester, Manchester, UK; Paediatric Psychosocial Department, Royal Manchester Children's Hospital, Manchester University Hospitals NHS Foundation Trust, Manchester, UK.
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3
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Gonsalves DG, Cazellato MB, Bonini LC, Ambrizzi DR, Souza HR, Girol AP, Rissi R. Morphological variations on vital systems in a conjoined twin. Anat Sci Int 2024; 99:225-234. [PMID: 38095807 DOI: 10.1007/s12565-023-00753-3] [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: 03/29/2023] [Accepted: 11/11/2023] [Indexed: 03/01/2024]
Abstract
Conjoined twins (CTs), popularly referred to as Siamese twins, are a rare anomaly due to monochorionic and monoamniotic twin pregnancies. Dicephalus dibrachius dipus, a type of parapagus conjoined twin which is characterized by possessing two arms, two legs, a single trunk and two heads, epidemiologically, is an even rarer occurrence of CTs. In this article, a rare, well-preserved anatomical specimen of a dicephalus dibrachius dipus conjoined twin is presented. This study was conducted in a specimen which is part of the collection of the Embryology Museum of the institution by donation and approved by the Research Ethics Committee (REC). The female conjoined twins were born at full-term by cesarean section in the 1970s and died hours after birth. A thorough anatomical description was made through observational analysis, computed tomography and 3D reconstructed images. Major abnormalities were observed in the cardiovascular, respiratory and digestive systems. The internal anatomy exhibited a heart with three atria, two ventricles, two aortic arches, two pulmonary arteries, one innominate venous trunk and a respiratory system with two tracheas and four lungs. No other report was similar to our three atria heart description. This article provides a thorough anatomical description of all systems, which is valuable information for further studies on CTs.
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Affiliation(s)
- Daniel Gregório Gonsalves
- Medical School, Padre Albino University Center (FAMECA-UNIFIPA), Rua dos Estudantes, 225, Catanduva, São Paulo, 15.809-144, Brazil
| | - Maria Bianca Cazellato
- Medical School, Padre Albino University Center (FAMECA-UNIFIPA), Rua dos Estudantes, 225, Catanduva, São Paulo, 15.809-144, Brazil
| | - Luca Campassi Bonini
- Medical School, Padre Albino University Center (FAMECA-UNIFIPA), Rua dos Estudantes, 225, Catanduva, São Paulo, 15.809-144, Brazil
| | - Dario Ravazzi Ambrizzi
- Department of Basic Sciences, Padre Albino University Center (FAMECA-UNIFIPA), Rua dos Estudantes, 225, Catanduva, São Paulo, 15.809-144, Brazil
| | - Helena Ribeiro Souza
- Department of Basic Sciences, Padre Albino University Center (FAMECA-UNIFIPA), Rua dos Estudantes, 225, Catanduva, São Paulo, 15.809-144, Brazil
| | - Ana Paula Girol
- Department of Basic Sciences, Padre Albino University Center (FAMECA-UNIFIPA), Rua dos Estudantes, 225, Catanduva, São Paulo, 15.809-144, Brazil
| | - Renato Rissi
- Department of Basic Sciences, Padre Albino University Center (FAMECA-UNIFIPA), Rua dos Estudantes, 225, Catanduva, São Paulo, 15.809-144, Brazil.
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Ahmad M, Khan MKA, Ahmad N, Parveen M, Shahzad K, Hasan A. Histotoxicity induced by copper oxide nanoparticles (CuO-NPs) on developing mice (Mus musculus). Food Chem Toxicol 2024; 184:114369. [PMID: 38110052 DOI: 10.1016/j.fct.2023.114369] [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: 07/22/2023] [Revised: 11/18/2023] [Accepted: 12/09/2023] [Indexed: 12/20/2023]
Abstract
The wide range of applications of nanoparticles (NPs) in various industries have led to serious consequences in terms of teratogenic toxicity. The aim of current work was to evaluate the teratogenic effects of copper oxide (CuO) nanoparticles in albino mice.In this experimental study, after mating, inseminated 40 female mice were divided randomly into 4 pools (1 control and 3 experimental), ten each. Doses were administered intravenously (We followed the protocol by Yaqub et al. (2018), intravenous application is faster route as compared to oral dosage)to all the experimental groups on the 6th day of gestation (GD), dose concentrations were 200, 133.3 and 100 mg/kg body weights respectively.The doses were prepared in sequence (1/2, 1/3, 1/4 0f LD50) according to already published work. The effects of CuO-NPs show linear relationship with the above sequence. The control group was administered only with distilled water.The gravid females were sacrificed through cervical disruption at the 18th day of gestation, fetuses were removed and divided into four sets (pools) for morphometric, morphological and histological studies. Data were subjected to statistical analysis by using Tukey's test in light of ANOVA at p < 0.05 level of significance. Findings of the present study showed that CuO-NPs various concentrations affect developmental abnormalities i.e.runt embryos, resorbed uteri, exencephaly, hygroma, macroglossia, micromelia, open eye, omphalocoel, scoliosis, kyphosis and kinked tail. It is concluded that exposure to CuO-NPs may potentially lead to the developmental deformities in mice.
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Affiliation(s)
- Munir Ahmad
- Department of Zoology, University of Okara, Okara, 56130, Pakistan
| | | | - Naveed Ahmad
- Department of Zoology, University of Education, Vehari campus, Vehari, 56130, Pakistan
| | - Munazza Parveen
- Department of Zoology, University of Okara, Okara, 56130, Pakistan
| | - Khurram Shahzad
- Department of Zoology, University of Okara, Okara, 56130, Pakistan
| | - Ali Hasan
- Institute of Zoology, University of the Punjab, Lahore, Pakistan
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5
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Aydin M, Guven Ezer B, Rencuzogullari E. The Future of the Teratogenicity Testing. Methods Mol Biol 2024; 2753:143-150. [PMID: 38285336 DOI: 10.1007/978-1-0716-3625-1_5] [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: 01/30/2024]
Abstract
The purpose of this review is to examine the importance, possible advantages and disadvantages of teratogenicity tests, and their future. For this purpose, numerous sources have been scanned in the field of teratogenicity. Although there are many methods related to teratogenic studies and very important studies have been made in this field, there are still serious deficiencies. There are advantages and disadvantages of in vitro and in vivo classical tests that have been used so far. The current status of in vivo tests is a matter of debate, especially due to the use of experimental animals. However, in vitro tests that do not perform the distribution and metabolism of chemicals also raise doubts in determination of teratogenicity. Despite the modern approaches of molecular biology and genetics and the best diagnostic techniques, the real cause of more than half of congenital diseases is still not understood. In this sense, the importance and necessity of teratogenic tests are understood once again. It is necessary to develop faster, reliable, and inexpensive techniques to replace traditional in vivo tests. It is important to disseminate harmless and reliable imaging techniques such as micro-CT. The use of European Center for the Validation of Alternative Methods (ECVAM) scientifically validated and approved in vitro tests such as embryonic stem cell test (EST), micro mass test (MM), and whole embryo culture (WEC) tests in routine screening can provide a solution in a shorter time than the classical tests. Improving these tests and developing new tests can help to solve the problem permanently.
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Affiliation(s)
- Muhsin Aydin
- Department of Biology, Science and Letters Faculty, Adiyaman University, Adiyaman, Turkey
| | - Banu Guven Ezer
- Department of Biology, Institute of Graduate Education, Adiyaman University, Adiyaman, Turkey
| | - Eyyup Rencuzogullari
- Department of Biology, Science and Letters Faculty, Adiyaman University, Adiyaman, Turkey.
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Scialli AR. Decamethylcyclopentasiloxane developmental neurotoxicity testing. Reprod Toxicol 2024; 123:108521. [PMID: 38061665 DOI: 10.1016/j.reprotox.2023.108521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/01/2023] [Accepted: 12/02/2023] [Indexed: 01/21/2024]
Affiliation(s)
- Anthony R Scialli
- Reproductive Toxicology Center, Member, Scialli Consulting LLC, Washington, D.C., USA.
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Yiğit H, Balcıoğlu E, Uçar İ, Değermenci M, Önder GÖ, Ceylan T, Unur E. Effects of pseudoephedrine on rat fetal bone development: evaluation by three different methods. Anat Sci Int 2024; 99:48-58. [PMID: 37389734 DOI: 10.1007/s12565-023-00733-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 06/21/2023] [Indexed: 07/01/2023]
Abstract
Pseudoephedrine (PSE) is an agent that is contained in common cold medications. The agent, which is used to treat cold and cough, is the fourth most prescribed drug group in some countries. During pregnancy, expectant mothers use PSE for colds and other reasons. One out of every four expectant mothers use PSE alone or in combination with other medicines for various reasons. This study was aimed to investigate effects of PSE on long bones development in rat during fetal growth. Pregnant rats were divided into five groups: control and four experimental groups (25 mg/kg, 50 mg/kg, 100 mg/kg, 200 mg/kg PSE). Between 1 and 20 days of pregnancy, PSE was given to them by gavage. Weights and heights of fetuses isolated by cesarean on the 21st day were measured. Ossification of femur and humerus was examined by three different methods mentioned earlier. Depending on the dose increase, all morphometric data, ossification rate and bone length of the fetuses were decreased. Besides, it was determined that the amount of Calcium in the bone tissue decreased in the analyzes made with SEM-EDX Analysis. The data obtained from this study reveal that the use of PSE during pregnancy disrupts the existing balance in the bone and negatively affects ossification due to the dose increase. In conclusion, we present descriptive and novel data on the effects of PSE use during pregnancy on the bone development of rat fetal long bones.
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Affiliation(s)
- Hüseyin Yiğit
- Cappadocia Vocational School, Department of Medical Services and Techniques, Cappadocia University, Nevsehir, Turkey.
| | - Esra Balcıoğlu
- Department of Histology and Embryology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - İlyas Uçar
- Department of Anatomy, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | | | - Gözde Özge Önder
- Department of Histology and Embryology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Tayfun Ceylan
- Department of Histology and Embryology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Erdoğan Unur
- Department of Anatomy, Faculty of Medicine, Erciyes University, Kayseri, Turkey
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8
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Calado AM, Seixas F, Pires MDA. Updating an Overview of Teratology. Methods Mol Biol 2024; 2753:1-38. [PMID: 38285332 DOI: 10.1007/978-1-0716-3625-1_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
In this chapter, the authors aim to update an overview of the principles of teratology, beginning with the definition of teratology, the critical point at which this process occurs, and some of the most common etiological agents that improve our understanding of teratology.Modern teratology has greatly improved in recent years with advances in new methods in molecular biology, toxicology, animal laboratory science, and genetics, increasing our knowledge of ambient influences. Nevertheless, there is a lot to do to reduce the influence of hazardous intervening agents, whether they target our genetics or not, that can negatively affect pregnancy and induce congenital development disorders, including morphological, biochemical, or behavioral defects.Certain agents might indeed be related to certain defects, but we have not been able to identify the cause of most congenital defects, which highlights the importance of finding and testing out new genetics techniques and conducting laboratory animal science to unravel the etiology and pathogenicity of each congenital defect.
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Affiliation(s)
- Ana Margarida Calado
- Animal and Veterinary Research Centre (CECAV), UTAD, and Associate Laboratory for Animal and Veterinary Science (AL4Animals), Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal
| | - Fernanda Seixas
- Animal and Veterinary Research Centre (CECAV), UTAD, and Associate Laboratory for Animal and Veterinary Science (AL4Animals), Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal
| | - Maria Dos Anjos Pires
- Animal and Veterinary Research Centre (CECAV), UTAD, and Associate Laboratory for Animal and Veterinary Science (AL4Animals), Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal.
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9
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Alves-Pimenta S, Colaço B, Oliveira PA, Venâncio C. Development Features on the Selection of Animal Models for Teratogenic Testing. Methods Mol Biol 2024; 2753:67-104. [PMID: 38285334 DOI: 10.1007/978-1-0716-3625-1_3] [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: 01/30/2024]
Abstract
Today, the use of animal models from different species continues to represent a fundamental step in teratogenic testing, despite the increase in alternative solutions that provide an important screening to the enormous quantity of new substances that aim to enter the market every year. The maintenance of these models is due to the sharing of similar development processes with humans, and in this way they represent an important contribution to the safety in the use of the compounds tested. Furthermore, the application of advances in embryology to teratology, although hampered by the complexity of reproductive processes, continues to prove the importance of sensitivity during embryonic and fetal development to detect potential toxicity, inducing mortality/abortion and malformations.In this chapter, essential periods of development in different models are outlined, highlighting the similarities and differences between species, the advantages and disadvantages of each group, and specific sensitivities for teratogenic testing. Models can be divided into invertebrate species such as earthworms of the species Eisenia fetida/Eisenia andrei, Caenorhabditis elegans, and Drosophila melanogaster, allowing for rapid results and minor ethical concerns. Vertebrate nonmammalian species Xenopus laevis and Danio rerio are important models to assess teratogenic potential later in development with fewer ethical requirements. Finally, the mammalian species Mus musculus, Rattus norvegicus, and Oryctolagus cuniculus, phylogenetically closer to humans, are essential for the assessment of complex specialized processes, occurring later in development.Regulations for the development of toxicology tests require the use of mammalian species. Although ethical concerns and costs limit their use in large-scale screening. On the other hand, invertebrate and vertebrate nonmammalian species are increasing as alternative animal models, as these organisms combine low cost, less ethical requirements, and culture conditions compatible with large-scale screening. Their main advantage is to allow high-throughput screening in a whole-animal context, in contrast to the in vitro techniques, not dependent on the prior identification of a target. Better knowledge of the development pathways of animal models will allow to maximize human translation and reduce the number of animals used, leading to a selection of compounds with an improved safety profile and reduced time to market for new drugs.
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Affiliation(s)
- Sofia Alves-Pimenta
- Department of Animal Science, School of Agrarian and Veterinary Sciences (CECAV), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
- Animal and Veterinary Research Centre (CECAV), Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - Bruno Colaço
- Department of Animal Science, School of Agrarian and Veterinary Sciences (CECAV), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
- Animal and Veterinary Research Centre (CECAV), Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - Paula A Oliveira
- Animal and Veterinary Research Centre (CECAV), Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
- Institute for Innovation, Capacity Building and Sustainability of Agri-food Production (Inov4Agro), University of Trás-os Montes and Alto Douro (UTAD), Vila Real, Portugal
- Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - Carlos Venâncio
- Department of Animal Science, School of Agrarian and Veterinary Sciences (CECAV), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.
- Animal and Veterinary Research Centre (CECAV), Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.
- Institute for Innovation, Capacity Building and Sustainability of Agri-food Production (Inov4Agro), University of Trás-os Montes and Alto Douro (UTAD), Vila Real, Portugal.
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10
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Bluett-Duncan M, Astill D, Charbak R, Clayton-Smith J, Cole S, Cook PA, Cozens J, Keely K, Morris J, Mukherjee R, Murphy E, Turnpenny P, Williams J, Wood AG, Yates LM, Bromley RL. Neurodevelopmental outcomes in children and adults with Fetal Valproate Spectrum Disorder: A contribution from the ConcePTION project. Neurotoxicol Teratol 2023; 100:107292. [PMID: 37666366 DOI: 10.1016/j.ntt.2023.107292] [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: 04/12/2023] [Revised: 07/17/2023] [Accepted: 09/01/2023] [Indexed: 09/06/2023]
Abstract
AIM To describe the neurodevelopmental phenotype of older children and adults with a diagnosis of Fetal Valproate Spectrum Disorder (FVSD). METHODS In this cross-sectional study, 90 caregivers were recruited and completed a series of questionnaires regarding the neurodevelopmental outcomes of 146 individuals aged 7-37 years (M = 18.1), including individuals with a formal diagnosis of FVSD (n = 99), individuals exposed to Valproate but without an FVSD diagnosis (n = 24), and individuals not exposed to Valproate (N = 23). The mean dose of valproate exposure for individuals with an FVSD diagnosis was 1470 mg/day. RESULTS Individuals with a diagnosis of FVSD showed significantly higher levels of moderate (43.4%) and severe (14.4%) cognitive impairment than other groups (p = 0.003), high levels of required formal educational support (77.6%), and poorer academic competence than individuals not exposed to Valproate (p = 0.001). Overall psychosocial problems (p = 0.02), internalising problems (p = 0.05) and attention problems (p = 0.001), but not externalising problems, were elevated in individuals with a diagnosis of FVSD. Rates of neurodevelopmental disorders, particularly autistic spectrum disorders (62.9%) and sensory problems (80.6%) are particularly central to the FVSD phenotype. There was no evidence of a statistical dose-dependent effect, possibly due to the high mean dose of exposure having a uniformly negative impact across the sample. Individuals with FVSD had required a significant number of health and child development services. INTERPRETATION Children and young adults with a diagnosis of FVSD are at an increased risk of a range of altered neurodevelopmental outcomes, highlighting the need for a multidisciplinary approach to clinical management across the lifespan.
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Affiliation(s)
- M Bluett-Duncan
- Division of Neuroscience, School of Biological Sciences, The University of Manchester, UK.
| | - D Astill
- Foetal Anti-Convulsant Syndrome New Zealand, Aukland, New Zealand
| | - R Charbak
- Division of Neuroscience, School of Biological Sciences, The University of Manchester, UK
| | - J Clayton-Smith
- Division of Evolution, Systems and Genomics, University of Manchester, UK
| | - S Cole
- Pharma Consent, London, UK
| | - P A Cook
- School of Health and Society, University of Salford, UK
| | - J Cozens
- Organisation for Anti-Convulsant Syndrome, UK
| | - K Keely
- Organisation for Anti-Convulsant Syndrome, Ireland
| | - J Morris
- Foetal Anti-Convulsant Syndrome New Zealand, Aukland, New Zealand
| | - R Mukherjee
- Department of Health and Social Science, University of Salford, Allerton Building, Salford, England, UK
| | - E Murphy
- Independent Fetal Anti-Convulsant Trust, Preston, UK
| | - P Turnpenny
- Royal Devon and Exeter NHS Foundation Trust, Exeter, UK
| | - J Williams
- Independent Fetal Anti-Convulsant Trust, Preston, UK
| | - A G Wood
- Clinical Sciences, Murdoch Children's Research Institute, & School of Psychology, Deakin University, Melbourne, Australia; Institute of Health and Neurodevelopment, Aston University, UK
| | - L M Yates
- Northern Genetics Service, Newcastle upon Tyne Hospitals NHS Foundation Trust, UK; KRISP, University of KwaZulu-Natal, South Africa
| | - R L Bromley
- Division of Neuroscience, School of Biological Sciences, The University of Manchester, UK; Royal Manchester Children's Hospital, Manchester University Hospitals NHS Foundation Trust, Manchester, UK
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11
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Napiórkowska T, Templin J, Napiórkowski P, Townley MA. Appendage abnormalities in spiders induced by an alternating temperature protocol in the context of recent advances in molecular spider embryology. PeerJ 2023; 11:e16011. [PMID: 37701827 PMCID: PMC10493090 DOI: 10.7717/peerj.16011] [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: 01/24/2023] [Accepted: 08/10/2023] [Indexed: 09/14/2023] Open
Abstract
In the literature there are numerous reports of developmental deformities in arthropods collected in their natural habitat. Since such teratogenically affected individuals are found purely by chance, the causes of their defects are unknown. Numerous potential physical, mechanical, chemical, and biological teratogens have been considered and tested in the laboratory. Thermal shocks, frequently used in teratological research on the spider Eratigena atrica, have led to deformities on both the prosoma and the opisthosoma. In the 2020/2021 breeding season, by applying alternating temperatures (14 °C and 32 °C, changed every 12 h) for the first 10 days of embryonic development, we obtained 212 postembryos (out of 3,007) with the following anomalies: oligomely, heterosymely, bicephaly, schistomely, symely, polymely, complex anomalies, and others. From these we selected six spiders with defects on the prosoma and two with short appendages on the pedicel for further consideration. The latter cases seem particularly interesting because appendages do not normally develop on this body part, viewed as the first segment of the opisthosoma, and appear to represent examples of atavism. In view of the ongoing development of molecular techniques and recent research on developmental mechanisms in spiders, we believe the observed phenotypes may result, at least in part, from the erroneous suppression or expression of segmentation or appendage patterning genes. We consider "knockdown" experiments described in the literature as a means for generating hypotheses about the sources of temperature-induced body abnormalities in E. atrica.
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Affiliation(s)
- Teresa Napiórkowska
- Department of Invertebrate Zoology and Parasitology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - Julita Templin
- Faculty of Biological and Veterinary Sciences, Department of Invertebrate Zoology and Parasitology, Nicolaus Copernicus University in Torun, Toruń, Poland
| | - Paweł Napiórkowski
- Department of Hydrobiology, Faculty of Biological Sciences, Kazimierz Wielki University in Bydgoszcz, Bydgoszcz, Poland
| | - Mark A. Townley
- University Instrumentation Center, University of New Hampshire, Durham, New Hampshire, United States
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Augustianath T, Evans DA, Anisha GS. Teratogenic effects of radiofrequency electromagnetic radiation on the embryonic development of chick: A study on morphology and hatchability. Res Vet Sci 2023; 159:93-100. [PMID: 37104994 DOI: 10.1016/j.rvsc.2023.04.015] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 04/16/2023] [Accepted: 04/20/2023] [Indexed: 04/29/2023]
Abstract
The present study was aimed at studying the effects of RF-EMR in causing teratogenic changes in the embryonic development of organisms using chick embryo as a model. The fertilized eggs of the hen were incubated in a digital humidified incubator and exposed to RF-EMR from 2G and 4G mobile phones by ringing at regular time intervals. The dose of RF-EMR was varied by increasing the call duration and number of calls per day, with the lower dose being a call duration of 50 min/day and the higher dose being 90 min/day. The phone kept had a range of radiofrequency between 900 and 1800 MHz and SAR (Specific Absorption Rate) 1.355 (2G) and 1.12 (4G) watts/ kg respectively. The batch of eggs incubated without any exposure to RF-EMR was taken as control. The hatchability of 2G and 4G experimental groups were respectively, 65% and 75% at lower radiation exposure and 40% and 55% at higher radiation exposure. The teratogenic effects of RF-EMR on the morphology of chick embryos manifested as the cross beak, non-retracted yolk sac, macrocephaly, malformed legs and toes, disability in standing and balancing the body and variations in body weight, body length and beak length. The results indicate that the RF-EMR poses potential threats to the developing stages of organisms.
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Affiliation(s)
- Tessy Augustianath
- Post-graduate and Research Department of Zoology (Research Centre Affiliated to University of Kerala), Government College for Women, Thiruvananthapuram, Kerala 695014, India
| | - D A Evans
- Department of Zoology, University College, Thiruvananthapuram, Kerala 695034, India
| | - G S Anisha
- Post-graduate and Research Department of Zoology (Research Centre Affiliated to University of Kerala), Government College for Women, Thiruvananthapuram, Kerala 695014, India.
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Abstract
Chicken remains an undisputed, powerful, useful, and practical model in developmental research. Chick embryos have been used as model systems for studies in experimental embryology and teratology. As the chicken embryo develops outside the mother, effects of external stresses on cardiovascular development can be studied without interferences of maternal hormonal, metabolic, or hemodynamic alterations. In 2004, the first draft sequence of the complete chicken genome was released, allowing broad genetic analysis and comparison to humans, and enabling expansion of transgenic techniques within the chick model. The chick embryo is relatively simple, quick, and low-cost model. The main advantages of the chick as a model system for experimental embryology are the ease with cells and tissues can be labeled, transplanted, and cultured, along with its similarity to mammalian systems.
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Affiliation(s)
- Domenico Ribatti
- Department of Translational Biomedicine and Neurosciences University of Bari Medical School, Piazza Giulio Cesare, 11, Policlinico, 70124 Bari, Italy.
| | - Tiziana Annese
- Department of Translational Biomedicine and Neurosciences University of Bari Medical School, Piazza Giulio Cesare, 11, Policlinico, 70124 Bari, Italy; Department of Medicine and Surgery, University LUM Giuseppe Degennaro, 70010 Casamassima (Ba), Italy
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14
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Vilmand M, Beck IH, Bilenberg N, Andersson AM, Juul A, Schoeters G, Boye H, Frederiksen H, Jensen TK. Prenatal and current phthalate exposure and cognitive development in 7-year-old children from the Odense child cohort. Neurotoxicol Teratol 2023; 96:107161. [PMID: 36690047 DOI: 10.1016/j.ntt.2023.107161] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 11/28/2022] [Accepted: 01/18/2023] [Indexed: 01/22/2023]
Abstract
BACKGROUND Phthalates are endocrine disrupters used in a variety of consumer products. Human studies suggest an association between phthalate exposure and cognitive development but adverse effects of the recently introduced phthalate substitutes have only been sparsely studied. OBJECTIVES To investigate associations between prenatal and concurrent exposure to phthalates and IQ in 7-year-old children from the Odense Child Cohort. METHODS Pregnant women from the Odense Child Cohort had phthalate metabolites measured in urine samples during 3rd trimester in 2010 to 2012. In addition, phthalates were also measured in urine samples from their offspring at age 7 years. IQ was assessed at age 7 years using four subtests from Wechsler Intelligence Scale for Children. The total study population consisted of 585 mother-child pairs with available prenatal urinary phthalate metabolites concentrations and IQ data at age 7 years. A subset of those (N = 274) had urinary phthalate metabolites measured in child urine at age 7 years. Phthalate concentrations were grouped into tertiles and associations with IQ were investigated using multiple linear regression adjusting for sex, maternal education and maternal/child BMI. RESULTS Urinary phthalate metabolite concentrations both in pregnant women and children were generally lower compared to previous cohorts. Children with high prenatal urinary concentrations of MEP and metabolites of DEHP (∑DEHPm)(3rd tertile) had -3.1 (95% CI: -5.5, -0.6) (MEP) and - 3.0 (-5.5, -0.6) (∑DEHPm) IQ points at age 7 years compared to children with low concentrations (1st tertile). High concurrent urinary phthalate concentrations of MCPP, ∑DnHxPm, ∑DiDPm and ∑DiNPm in the 3rd tertile was associated with -3.7 (-7.2, -0.2), -4.4 (-7.9, -0.9), -3.7 (-7.2, -0.2) and - 5.6 (-9.1, -2.2) IQ points, respectively, compared to those with the lowest concentrations (1st tertile). CONCLUSION We found significant inverse associations between some prenatal and concurrent urinary phthalate concentrations and IQ at age 7 years in this low exposed population. This suggests that exposure to phthalates both prenatally and during early childhood could be hazardous to child neurodevelopment, however, large-scale prospective studies assessing phthalate exposure through multiple urine samples, and possibly investigating cocktail effects of the chemicals as well as long term follow-up are warranted.
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Affiliation(s)
- Mikkel Vilmand
- Department of Clinical Pharmacology, Pharmacy and Environmental Medicine, Institute of Public Health, University of Southern Denmark, Odense, Denmark; Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark
| | - Iben Have Beck
- Department of Clinical Pharmacology, Pharmacy and Environmental Medicine, Institute of Public Health, University of Southern Denmark, Odense, Denmark; Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark
| | - Niels Bilenberg
- Department of Child and Adolescent Psychiatry, Odense, Mental Health Services in Region of Southern Denmark, University of Southern Denmark, Odense, Denmark
| | - Anna-Maria Andersson
- Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen, Denmark
| | - Anders Juul
- Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Greet Schoeters
- Environmental Risk and Health Unit, Flemish Institute for Technological Research (VITO), Mol, Belgium; Department of Biomedical Sciences, University of Antwerp, 2000 Antwerp, Belgium
| | - Henriette Boye
- Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark; Odense Patient data Explorative Network (OPEN), Odense, Denmark
| | - Hanne Frederiksen
- Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen, Denmark
| | - Tina Kold Jensen
- Department of Clinical Pharmacology, Pharmacy and Environmental Medicine, Institute of Public Health, University of Southern Denmark, Odense, Denmark; Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark; Odense Patient data Explorative Network (OPEN), Odense, Denmark.
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15
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Noune F, Chaib N, Kaddeche H, Dzizi S, Metallaoui S, Blanco S. Effect of salinity on valves morphology in freshwater diatoms. Environ Monit Assess 2022; 195:159. [PMID: 36441291 DOI: 10.1007/s10661-022-10770-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
Increased salt concentration is one of the most widespread problems affecting freshwater worldwide. Aquatic communities, and in particular periphytic diatoms, react to this alteration in water quality by modifying their structural parameters and physiology at the individual level, which is commonly manifested by the appearance of teratological forms. The present work presents the results of an experimental laboratory study in which a biofilm grown on artificial substrates was subjected to a gradient of water conductivities for 4 weeks. The results show an increase in the number of deformed valves over time proportionally to the increase in conductivity for each experimental treatment. These effects are also verified by analyzing the concentration of chlorophyll-a in the experimental biofilms, which demonstrate a metabolic response to the induced osmotic stress. No changes were recorded; however, in species richness or diversity of taxa present in the treatments. Our results, therefore, confirm at the experimental level numerous previous field observations about the harmful effect of salinity on periphytic diatoms, and also their ability to reintegrate with the new stress conditions.
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Affiliation(s)
- Faïza Noune
- Department of Natural and Life Sciences, Faculty of Sciences, University of 20 August 1955, Skikda, Algeria.
- Laboratoire de Recherche Sur La Physico-Chimie des Surfaces Et Interfaces (LRPCSI), University of 20 August 1955, Skikda, Algeria.
| | - Nadjla Chaib
- Department of Process Engineering, Faculty of Technology, University of 20 August 1955, Skikda, Algeria
- Laboratory of Catalysis, Bioprocesses and Environment - LCBE, University of 20 August 1955, Skikda, Algeria
| | - Hadjer Kaddeche
- Department of Natural and Life Sciences, Faculty of Sciences, University of 20 August 1955, Skikda, Algeria
- Laboratoire de Recherche Sur La Physico-Chimie des Surfaces Et Interfaces (LRPCSI), University of 20 August 1955, Skikda, Algeria
| | - Sabrina Dzizi
- Laboratoire de Recherche Sur La Physico-Chimie des Surfaces Et Interfaces (LRPCSI), University of 20 August 1955, Skikda, Algeria
- Department of Process Engineering, Faculty of Technology, University of 20 August 1955, Skikda, Algeria
| | - Sophia Metallaoui
- Department of Natural and Life Sciences, Faculty of Sciences, University of 20 August 1955, Skikda, Algeria
- Laboratoire de Recherche des Interactions, Biodiversité, Ecosystèmes et Biotechnologie (LRIBEB), University of 20 August 1955, Skikda, Algeria
| | - Saùl Blanco
- Departamento de Biodiversidad y Gestión Ambiental, Facultad de Ciencias Biológicas y Ambientales, Universidad de León, Campus de Vegazana S/N, 24071, León, Spain
- Laboratorio de Diatomología, La Serna 58, 24007, León, Spain
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16
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Abstract
Abnormal trilobites present insight into how arthropods with fully biomineralised exoskeletons recovered from injuries, genetic malfunctions, and pathologies. Records of abnormal Silurian trilobites in particular show an abundance of specimens with teratologies and a limited record of injuries. Here we expand the record of abnormal Silurian trilobites by presenting seven new abnormal specimens of Odontopleura (Sinespinaspis) markhami from the early Silurian (Llandovery, Telychian) Cotton Formation, New South Wales. We use these specimens to illustrate novel evidence for asymmetric distribution of pleural thoracic spine bases. These abnormal bases likely reflect genetic complications, resulting in morphologies that would unlikely have aided the fitness of abnormal individuals. In considering records of malformed Silurian trilobites more broadly, we propose that the largest trilobites may have been prey at this time. This indicates a possible change in the trophic position of trilobites when compared to Cambrian and Ordovician palaeoecosystems.
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Affiliation(s)
- Russell D.C. Bicknell
- Palaeoscience Research Centre, School of Environmental and Rural Science, University of New England, Armidale, New South Wales, Australia
| | - Patrick M. Smith
- Department of Biological Sciences, Macquarie University, Sydney, New South Wales, Australia,Palaeontology Department, Australian Museum Research Institute, Sydney, New South Wales, Australia
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17
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Nemec B, Dron H. The environments of reproductive and birth defects research in the U.S. and West Germany (c. 1955-1975). Stud Hist Philos Sci 2022; 95:50-63. [PMID: 35981444 DOI: 10.1016/j.shpsa.2022.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 06/15/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
Most historiographies of the crossroads of environmental and reproductive health in 20th century start and end with the case of thalidomide. Despite its global scope, thalidomide today stands for sharp contrasts: in the numbers of victims, in institutional responses to the disaster, and also-more generally-in regulatory approaches to potential risks and national cultures of reproductive justice and disability rights. This paper takes a closer look at two countries that have been seen as emblematic of this divide in regulatory frameworks, despite similarities and interconnections in other areas, such as (pharma)industrial production, science, and robust feminist environmental health movements: the U.S. and West Germany. It argues that thalidomide needs to be historically contextualized within a broad framework of concepts and models of environment from research on exogenous reproductive effects. To do so, it reconstructs what counted as environment in research on reproductive health and birth defects in these two national settings in the postwar decades. It looks at transformations made across multifaceted initiatives, studying collective landscapes and workplaces as potentially dangerous "outer worlds," as well as smaller scale and more individualized environments, i.e., the maternal metabolism, uterus, lifestyle, or social interactions. The article thereby aims to explicate concepts and debates about the environment that influenced later national divisions in politics of science and technology, hinting of the democratic challenges these posed.
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Affiliation(s)
- Birgit Nemec
- Universitätsmedizin Berlin, Institute for History of Medicine and Ethics of Medicine, Thielallee 71, 14195 Berlin, Germany.
| | - Heather Dron
- University of Michigan, 3700 Haven Hall, 505 S. State St., Ann Arbor, MI 48109-1045, USA.
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Lempereur S, Machado E, Licata F, Simion M, Buzer L, Robineau I, Hémon J, Banerjee P, De Crozé N, Léonard M, Affaticati P, Talbot H, Joly JS. ZeBraInspector, a platform for the automated segmentation and analysis of body and brain volumes in whole 5 days post-fertilization zebrafish following simultaneous visualization with identical orientations. Dev Biol 2022; 490:86-99. [PMID: 35841952 DOI: 10.1016/j.ydbio.2022.07.004] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 07/03/2022] [Accepted: 07/08/2022] [Indexed: 11/29/2022]
Abstract
In recent years, the zebrafish has become a well-established laboratory model. We describe here the ZeBraInspector (ZBI) platform for high-content 3D imaging (HCI) of 5 days post-fertilization zebrafish eleuthero-embryos (EEs). This platform includes a mounting method based on 3D-printed stamps to create a grid of wells in an agarose cast, facilitating batch acquisitions with a fast-confocal laser scanning microscope. We describe reference labeling in cleared fish with a fluorescent lipophilic dye. Based on this labeling, the ZBI software registers. EE 3D images, making it possible to visualize numerous identically oriented EEs on a single screen, and to compare their morphologies and any fluorescent patterns at a glance. High-resolution 2D snapshots can be extracted. ZBI software is therefore useful for diverse high-content analyses (HCAs). Following automated segmentation of the lipophilic dye signal, the ZBI software performs volumetric analyses on whole EEs and their nervous system white matter. Through two examples, we illustrate the power of these analyses for obtaining statistically significant results from a small number of samples: the characterization of a phenotype associated with a neurodevelopmental mutation, and of the defects caused by treatments with a toxic anti-cancer compound.
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Affiliation(s)
- Sylvain Lempereur
- LIGM, Univ Gustave Eiffel, CNRS, ESIEE Paris, F-77454, Marne-la-Vallée, France; Tefor Paris-Saclay, UMS 2010, CNRS, INRAE, Université Paris-Saclay, Gif sur Yvette, France.
| | - Elodie Machado
- Tefor Paris-Saclay, UMS 2010, CNRS, INRAE, Université Paris-Saclay, Gif sur Yvette, France
| | - Fabrice Licata
- Tefor Paris-Saclay, UMS 2010, CNRS, INRAE, Université Paris-Saclay, Gif sur Yvette, France
| | - Matthieu Simion
- Tefor Paris-Saclay, UMS 2010, CNRS, INRAE, Université Paris-Saclay, Gif sur Yvette, France
| | - Lilian Buzer
- LIGM, Univ Gustave Eiffel, CNRS, ESIEE Paris, F-77454, Marne-la-Vallée, France
| | - Isabelle Robineau
- Tefor Paris-Saclay, UMS 2010, CNRS, INRAE, Université Paris-Saclay, Gif sur Yvette, France
| | - Julien Hémon
- Tefor Paris-Saclay, UMS 2010, CNRS, INRAE, Université Paris-Saclay, Gif sur Yvette, France
| | - Payel Banerjee
- Tefor Paris-Saclay, UMS 2010, CNRS, INRAE, Université Paris-Saclay, Gif sur Yvette, France
| | | | - Marc Léonard
- L'Oréal, Research & Innovation, Aulnay sous Bois, France
| | - Pierre Affaticati
- Tefor Paris-Saclay, UMS 2010, CNRS, INRAE, Université Paris-Saclay, Gif sur Yvette, France
| | - Hugues Talbot
- LIGM, Univ Gustave Eiffel, CNRS, ESIEE Paris, F-77454, Marne-la-Vallée, France; Université Paris-Saclay, Centrale Supélec, INRIA, 91190, Gif-sur-Yvette, France
| | - Jean-Stéphane Joly
- Tefor Paris-Saclay, UMS 2010, CNRS, INRAE, Université Paris-Saclay, Gif sur Yvette, France.
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Ahmad M, Khan MKA, Shahzad K, Ahmad N, Parveen M, Khan MS. Teratological effects of titanium dioxide nanoparticles in mice embryo. Environ Sci Pollut Res Int 2022; 29:40724-40733. [PMID: 35083667 DOI: 10.1007/s11356-021-18237-0] [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: 04/27/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
Nanoparticles have numerous applications related to human uses. Titanium dioxide nanoparticles (TiO2-NPs) are extensively used in many daily utilities. The small size particles and larger uses in the industry have led them to become a threatening entity to the living organisms. The unchecked use and dumping in the environment poses a significant toxicological risk to the developing mammalian embryo. The present study was conducted to determine the developmental toxicity and teratogenic effects of TiO2-NPs in murine embryos. The TiO2-NPs were introduced intravenously into pregnant mice graded as T1 (0.52 mg/g BW), T2 (0.7 mg/g BW), and T3 (1.05 mg/g BW) along with control with no dose administration T0 (0.00 mg/g BW). Results recorded after 14 days were resorbed fetuses, dropped wrist, hemorrhages, sacral hygromas, and kinked tails. It was concluded that the exposure of TiO2-NPs in mentioned doses from any source may lead to deleterious effects on the development of an embryo.
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Affiliation(s)
- Munir Ahmad
- Department of Zoology, University of Okara, Okara, 56130, Pakistan
| | | | - Khurram Shahzad
- Department of Zoology, University of Okara, Okara, 56130, Pakistan
| | - Naveed Ahmad
- Department of Zoology, University of Education, Vehari Campus, Vehari, Pakistan
| | - Munazza Parveen
- Department of Zoology, University of Okara, Okara, 56130, Pakistan
- Department of Zoology, University of the Punjab, Lahore, Punjab, Pakistan
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20
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Ray S. From Monsters to Malformations: Anatomical Preparations as Objects of Evidence for a Developmental Paradigm of Embryology, 1770-1850. J Hist Biol 2022; 55:35-57. [PMID: 35246756 DOI: 10.1007/s10739-022-09670-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
A common object found within medical museums is the developmental series: an arrangement of embryos depicting the transformation of an unremarkable blob into an anatomically organized and recognizable organism. The developmental series depicts a normative process, one where bodies emerge in reliable sequential stages to reveal anatomically perfect beings. Yet a century before the developmental series would become a visual model of embryological development, the very process of development itself was discerned through the comparative study of preserved human fetuses-specifically, those deemed "monstrous" or characterized as "malformations." This article examines how anatomically diverse fetal bodies were reformulated from singular curiosities into alternative developmental pathways whose characteristics testified to the laws of nature and to the primordial, physical relationship between humans and other species. In early nineteenth century Amsterdam, the father-son team of physicians Gerard and Willem Vrolik built up an internationally renowned anatomical museum famous especially for Willem's collection of fetal malformations. Physical preparations of fetal malformations play a central role in Willem's monumental handbook on developmental embryology: comparing human embryos against one another and the embryos of other species, Willem plots out a sequence of embryological development in which a body's form marks its place within the ever-unfolding natural order. In conversation with the literature on model organisms, this article explores how the "monstrous" gets standardized and, in doing so, contributes to the scientific production of a normative physiological process.
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Affiliation(s)
- Sara Ray
- History and Sociology of Science Department, University of Pennsylvania, 241 S 47th Street #304, Philadelphia, PA, 19139, USA.
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21
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Adams J, Janulewicz PA, Macklin EA, Dhillon R, Phillips C, Schomer DL, Tosches WA, Carlson JM, Holmes LB. Neuropsychological effects in children exposed to anticonvulsant monotherapy during gestation: Phenobarbital, carbamazepine, and phenytoin. Epilepsy Behav 2022; 127:108533. [PMID: 35042158 DOI: 10.1016/j.yebeh.2021.108533] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 12/27/2021] [Accepted: 12/27/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Usage during pregnancy of the antiseizure medication (ASM), phenobarbital (PB), carbamazepine (CBZ), and phenytoin (PHT), has been associated with adverse pregnancy outcomes. While morphological effects on offspring are well-documented, inconsistent findings have been reported on neuropsychological development, possibly due to differences in attention to maternal demographics, and other design characteristics. Herein, we report the results of a carefully designed protocol used to examine the effects of gestational monotherapy with PB, CBZ, or PHT upon children's general mental abilities, when compared to age- and gender- matched children born to unexposed women of similar age, education, and socioeconomic status. METHODS For each ASM, we selected qualifying cases from children born to PB, CBZ, or PHT monotherapy-exposed and unexposed women. Following the application of inclusion, exclusion, and matching criteria, our sample included 34 PB-exposed, 40 PHT-exposed, and 41 CBZ-exposed children along with matched unexposed children for each drug group. Criteria were applied through examination of maternal medical and educational histories, parental socioeconomic characteristics, and child's age and gender. Each child's physical and neuropsychological characteristics were examined, using standardized protocols. We report on the cognitive performance of the children as assessed by the Wechsler Intelligence Scale for Children - III (WISC-III), the leading measure of mental ability in the U.S. RESULTS An overall mixed model ANOVA of the adjusted performance of the children across all groups controlling for maternal IQ revealed significant effects on verbal IQ, but not full-scale IQ or performance IQ. In the individual drug and unexposed group comparisons, only reduced verbal and full-scale IQ scores in PB-exposed versus matched unexposed children were found. Comparisons between drug groups revealed a significant reduction in verbal IQ and full-scale IQ in PB-exposed versus PHT-exposed children, but not in other drug-drug comparisons. SIGNIFICANCE These results demonstrate effects on children's mental ability due to prenatal PB exposure, such that analyses adjusted for maternal IQ scores, revealed reduced verbal mental abilities and reduced full-scale IQ scores when scores in exposed children were compared to scores from children of the same age and sex born to demographically similar, healthy unexposed women. When comparisons were made between drug groups, children exposed prenatally to PB performed significantly worse than prenatally PHT-exposed children, but CBZ-exposed children's scores were not significantly different from those of PB or PHT-exposed groups. In light of shared effects on structural teratogenicity, these findings suggest that use of PB monotherapy for the management of seizures during pregnancy may be associated with increased risk in comparison to PHT when neurobehavioral functioning is considered, and that only PB-exposed children have reduced performance compared to matched controls. Attention to these effects is critical in the developing world where use of these older medications remains predominant, and prudent choices can be made to reduce impact on cognitive development.
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Affiliation(s)
- Jane Adams
- University of Massachusetts Boston, Psychology Department, Boston, MA, United States.
| | - Patricia Ann Janulewicz
- Boston University School of Public Health, Environmental Health Department, Boston, MA, United States
| | - Eric A Macklin
- Biostatistics Center, Massachusetts General Hospital and Harvard Medical School, Biostatistics, Boston, MA, United States
| | - Ruby Dhillon
- Boston University School of Public Health, Environmental Health Department, Boston, MA, United States
| | - Catherine Phillips
- UMass Memorial Medical Center, Department of Neurology, Worcester, MA, United States
| | - Donald L Schomer
- Beth Israel Deaconess Medical Center, Department of Neurology, Boston, MA, United States
| | - William A Tosches
- Beth Israel Deaconess Medical Center, Department of Neurology, Hopedale, MA, United States
| | - Jeffrey M Carlson
- Boston University School of Public Health, Environmental Health Department, Boston, MA, United States
| | - Lewis B Holmes
- MassGeneral Hospital for Children, Medical Genetics Unit, Boston, MA, United States
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22
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Bicknell RDC, Smith PM. Teratological trilobites from the Silurian (Wenlock and Ludlow) of Australia. Naturwissenschaften 2021; 108:58. [PMID: 34668077 DOI: 10.1007/s00114-021-01766-6] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/28/2021] [Accepted: 10/01/2021] [Indexed: 11/30/2022]
Abstract
Documentation of malformed trilobites has presented invaluable insight into the palaeobiology of a wholly extinct euarthropod group. Although the northern hemisphere record is relatively well documented, examples of abnormal trilobites from Australia are limited. Furthermore, most recorded specimens are from Cambrian-aged rocks. To extend this limited record, we document five new examples of malformed Australian trilobites from the Middle and Late Silurian (Wenlock and Ludlow) deposits of the Yarralumla Formation of the Australian Capital Territory and Yarwood Siltstone Member, Black Bog Shale in New South Wales. We record the first examples of abnormal pygidial and thoracic nodes and present new evidence for bifurcating pygidial ribs. These abnormal features are considered teratological morphologies. The aberrant nodes likely arose through developmental malfunctions, while the bifurcating ribs represent either similar defects, or an injury that developed into a teratological feature. Explanations for the limited record of malformed Australian trilobites and for the decrease in injured trilobites after the end-Ordovician are presented. Further documentation of malformed Australian trilobites from the middle-to-late Paleozoic will undoubtedly paint a more complete picture of how Gondwanan taxa recovered from injuries or unfortunate developmental complications.
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Affiliation(s)
- Russell D C Bicknell
- Palaeoscience Research Centre, School of Environmental and Rural Science, University of New England, Armidale, NSW, 2351, Australia.
| | - Patrick M Smith
- Palaeontology Department, Australian Museum Research Institute, Sydney, NSW, 2010, Australia.,Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia
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Zhou Y, Tao J, Wang K, Deng K, Wang Y, Zhao J, Chen C, Wu T, Zhou J, Zhu J, Li X. Protocol of a prospective and multicentre China Teratology Birth Cohort (CTBC): association of maternal drug exposure during pregnancy with adverse pregnancy outcomes. BMC Pregnancy Childbirth 2021; 21:593. [PMID: 34470618 PMCID: PMC8411516 DOI: 10.1186/s12884-021-04073-0] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 08/23/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND As reported, 27-93 % of pregnant women take at least one drug during pregnancy. However, drug exposure during pregnancy still lacks sufficient foetal safety evidence of human origin. It is urgent to fill the knowledge gap about medication safety during pregnancy for optimization of maternal disease treatment and pregnancy drug consultation. METHODS AND ANALYSIS The China Teratology Birth Cohort (CTBC) was established in 2019 and is a hospital-based open-ended prospective cohort study with the aim of assessing drug safety during pregnancy. Pregnant women who set up the pregnancy health records in the first trimester or who seek drug consultation regardless of gestational age in the member hospitals are recruited. Enrolled pregnant women need to be investigated four times, namely, 6-14 and 24-28 weeks of gestational age, before discharge after hospital delivery, and 28-42 days after birth. Maternal medication exposure during pregnancy is the focus of the CTBC. For drugs, information on the type, name, and route of medication; start and end time of medication; single dose; frequency of medication; dosage form; manufacturer; and reason for medication is collected. The adverse pregnancy outcomes collected in the study include birth defects, stillbirth, spontaneous abortion, preterm birth, post-term birth, low birth weight, macrosomia, small for gestational age, large for gestational age and low Apgar score. CTBC uses an electronic questionnaire for data collection and a cloud system for data management. Biological samples are collected if informed consents are obtained. Multi-level logistic regression, mixed-effect negative binomial distribution regression and spline function regression are used to explore the effect of drugs on the occurrence of birth defects. DISCUSSION The findings of the study will assist in further understanding the risk of birth defects and other adverse pregnancy outcomes associated with maternal drug exposure and developing the optimal treatment plans and drug counselling for pregnant women. TRIAL REGISTRATION This study was approved by the Research Ethics Committee of the West China Second Hospital of Sichuan University and registered at the Chinese Clinical Trial Registry ( http://www.chictr.org.cn/index.aspx , registration number ChiCTR1900022569 ).
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Affiliation(s)
- Yangwen Zhou
- National Center for Birth Defect Monitoring of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Sichuan Province, 610041, Chengdu City, People's Republic of China
| | - Jing Tao
- Key Laboratory of Birth Defects And Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Ke Wang
- National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Sichuan Province, 610041, Chengdu City, People's Republic of China
| | - Kui Deng
- National Center for Birth Defect Monitoring of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Sichuan Province, 610041, Chengdu City, People's Republic of China
| | - Yanping Wang
- Key Laboratory of Birth Defects And Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Jianxin Zhao
- National Center for Birth Defect Monitoring of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Sichuan Province, 610041, Chengdu City, People's Republic of China
| | - Chunyi Chen
- National Center for Birth Defect Monitoring of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Sichuan Province, 610041, Chengdu City, People's Republic of China
| | - Tingxuan Wu
- National Center for Birth Defect Monitoring of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Sichuan Province, 610041, Chengdu City, People's Republic of China
| | - Jiayuan Zhou
- National Center for Birth Defect Monitoring of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Sichuan Province, 610041, Chengdu City, People's Republic of China
| | - Jun Zhu
- National Center for Birth Defect Monitoring of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Sichuan Province, 610041, Chengdu City, People's Republic of China. .,Key Laboratory of Birth Defects And Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China. .,National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Sichuan Province, 610041, Chengdu City, People's Republic of China.
| | - Xiaohong Li
- Key Laboratory of Birth Defects And Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China. .,National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, No. 17 Ren Min Nan Lu, Sichuan Province, 610041, Chengdu City, People's Republic of China.
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24
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Orzabal MR, Naik VD, Lee J, Wu G, Ramadoss J. Impact of gestational electronic cigarette vaping on amino acid signature profile in the pregnant mother and the fetus. Metabol Open 2021; 11:100107. [PMID: 34355157 PMCID: PMC8319793 DOI: 10.1016/j.metop.2021.100107] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/10/2021] [Accepted: 07/11/2021] [Indexed: 11/25/2022] Open
Abstract
Background Electronic cigarettes (e-cigs) are a form of tobacco product that has become increasingly popular over the past decade. Despite the known health consequences of tobacco product exposure during pregnancy, a substantial number of daily smokers will continue to smoke during pregnancy. Our current knowledge on the effects of e-cig aerosol exposure during pregnancy is limited to a small number of animal studies, which have identified several e-cig aerosol-induced disruptions to the physiology of normal development. Methods To further assess the impact of prenatal e-cig aerosol exposure on maternal and fetal health, we examined the amino acid signature profiles in maternal and fetal plasma, as well as in the fetal lungs, a sensitive target organ for prenatal tobacco product exposure. Pregnant Sprague Dawley rats were randomly assigned to one of three groups and were exposed to either e-cig aerosols containing nicotine, e-cig aerosols without nicotine, or room air. Dams were exposed utilizing a state-of-the-art custom engineered e-cig vaping system that is compatible with commercially available e-cig atomizers and enables a translational inhalation delivery method comparable to human vaping. Results We determined that gestational exposure to e-cig aerosols results in significant alterations to the amino acid profile in the maternal and fetal compartments, including the fetal lungs. The data shows a targeted disruption to the nitric oxide pathway, branched-chain amino acid metabolism, fetal protein synthesis, and urea cycle. Conclusion The data presented herein provides additional support that gestational e-cig aerosol exposure can impact crucial biological processes and exemplifies the need for extensive research on exposure to e-cig aerosols. First report of e-cig induced alterations to maternal/fetal amino acid profile. Translational vaping paradigm utilizing custom engineered vaping system. Analysis of amino acids show gestational e-cig exposure has significant effects. Fetal lungs may be a sensitive target to gestational e-cig aerosol exposure. Marker of dysregulation in branched-chain amino acid metabolism and urea cycle.
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Affiliation(s)
- Marcus R Orzabal
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Vishal D Naik
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Jehoon Lee
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Guoyao Wu
- Department of Animal Science, College of Agriculture and Life Sciences, Texas A&M University, College Station, TX, USA
| | - Jayanth Ramadoss
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
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25
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Peterka M, Heringova LH, Sukop A, Peterkova R. Anti-asthma Drugs Formoterol and Budesonide (Symbicort) Induce Orofacial Clefts, Gastroschisis and Heart Septum Defects in an In Vivo Model. In Vivo 2021; 35:1451-1460. [PMID: 33910822 DOI: 10.21873/invivo.12397] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/03/2021] [Accepted: 02/05/2021] [Indexed: 01/24/2023]
Abstract
BACKGROUND We had a case in which three consecutive pregnancies resulted in birth of three children with an orofacial cleft. Their mother suffered from bronchial asthma and was treated using symbicort (corticosteroid budesonide plus bronchodilator formoterol) during her pregnancies. A hypothesis was assessed: these anti-asthmatics can induce an orofacial cleft in experimental model. MATERIALS AND METHODS A single administration of one of five increasing doses (including therapeutically used ones) of Symbicort, budesonide or formoterol was injected into the amnion of a chick embryo on day 4 or 5 of incubation. The teratogenic/lethal effects of the anti-asthmatics were assessed on a total of 600 embryos. RESULTS For budesonide, the teratogenic/lethal effect started at a dose 0.003 μg per embryo, for formoterol at 0.3 μg and for Symbicort 0.03 μg. Orofacial clefts and gastroschisis after exposure were found for all three anti-asthmatics. Heart septum defects occurred after exposure to formoterol. CONCLUSION The present results support those clinical/epidemiological studies pointing out that anti-asthmatics have the potential to induce orofacial clefts, gastroschisis and heart malformations during prenatal development in human.
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Affiliation(s)
- Miroslav Peterka
- Cleft Centre, Clinic of Plastic Surgery, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czech Republic; .,Institute of Anatomy, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Lucie Hubickova Heringova
- Institute of Histology and Embryology, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Andrej Sukop
- Cleft Centre, Clinic of Plastic Surgery, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Renata Peterkova
- Institute of Histology and Embryology, Third Faculty of Medicine, Charles University, Prague, Czech Republic
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26
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Cotoras DD, Castanheira PDS, Sharma PP. Implications of a cheliceral axial duplication in Tetragnatha versicolor (Araneae: Tetragnathidae) for arachnid deuterocerebral appendage development. Dev Genes Evol 2021; 231:131-139. [PMID: 34125284 DOI: 10.1007/s00427-021-00678-9] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 06/04/2021] [Indexed: 11/29/2022]
Abstract
The homology of the arachnid chelicera with respect to other head appendages in Panarthropoda has long been debated. Gene expression data and the re-interpretation of early transitional fossils have supported the homology of the deutocerebrum and its associated appendages, implying a homology between primary antennae (mandibulates), chelicerae (euchelicerates), and chelifores (sea spiders). Nevertheless, comparatively little is known about the mechanistic basis of proximo-distal (PD) axis induction in chelicerates, much less the basis for cheliceral fate specification. Here, we describe a new cheliceral teratology in the spider Tetragnatha versicolor Walckenaer, 1841, which consists on a duplication of the PD axis of the left chelicera associated with a terminal secondary schistomely on the fang of the lower axis. This duplication offers clues as to potential shared mechanisms of PD axis formation in the chelicera. We review the state of knowledge on PD axis induction mechanisms in arthropods and identify elements of gene regulatory networks that are key for future functional experiments of appendage development in non-insect model systems. Such investigations would allow a better understanding of PD axis induction of modified and poorly studied arthropod limbs (e.g., chelicerae, chelifores, and ovigers).
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Affiliation(s)
- Darko D Cotoras
- Entomology Department, California Academy of Sciences, 55 Music Concourse Dr., Golden Gate Park, San Francisco, CA, 94118, USA.
| | - Pedro de S Castanheira
- Laboratório de Diversidade de Aracnídeos, Universidade do Brasil/Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho 373, 21941-902, Ilha do Fundão, Rio de Janeiro, Brazil.,Harry Butler Institute, Murdoch University, 90 South St, Murdoch, Western Australia, 6150, Australia
| | - Prashant P Sharma
- Department of Integrative Biology, University of Wisconsin-Madison, 441 Birge Hall, 430 Lincoln Drive, Madison, WI, 53706, USA
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27
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Napiórkowska T, Templin J, Napiórkowski P. Teratological changes in postembryos of Eratigena atrica obtained by the application of alternating temperatures on spider embryos. PeerJ 2021; 9:e11457. [PMID: 34131520 PMCID: PMC8174146 DOI: 10.7717/peerj.11457] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/24/2021] [Indexed: 11/20/2022] Open
Abstract
Spider embryonic development depends on several factors, including temperature. Under optimum thermal conditions embryogenesis proceeds undisturbed and embryo mortality is low. On the other hand, dramatic shifts in incubation temperature may cause a range of developmental defects in embryos. It has been confirmed in numerous laboratory experiments that abrupt temperature changes can be a powerful teratogenic factor. Changes in the external structure are frequently reflected in the internal anatomy, and above all, in the central nervous system. In the present teratological study, by exposing spider embryos to the temperatures of 14 °C and 32 °C, changed every 12 hours for the first 10 days of their development, we obtained 74 postembryos of Eratigena atrica with body deformities such as oligomely, heterosymely, schistomely, bicephaly, complex anomalies and others. We selected six spiders to describe and analyze their morphological changes. In one case, that of a spider affected by polymely (the presence of a supernumerary appendage) combined with heterosymely (the fusion of walking legs), we also focused on the structure of the central nervous system. The analysis indicated that this complex anomaly was accompanied by only one change in the central nervous system: the presence of a supernumerary neuropil. Since no fusion of walking leg neuropils was observed, it was concluded that, in this instance, there was no relationship between the fusion of legs and the structure of the central nervous system.
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Affiliation(s)
- Teresa Napiórkowska
- Faculty of Biological and Veterinary Sciences, Department of Invertebrate Zoology and Parasitology, Nicolaus Copernicus University of Torun, Toruń, Poland
| | - Julita Templin
- Faculty of Biological and Veterinary Sciences, Department of Invertebrate Zoology and Parasitology, Nicolaus Copernicus University of Torun, Toruń, Poland
| | - Paweł Napiórkowski
- Faculty of Biological Sciences, Department of Hydrobiology, Kazimierz Wielki University in Bydgoszcz, Bydgoszcz, Poland
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28
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Kennedy DS, Batagol RP. Confusion about doxylamine safety in pregnancy. Med J Aust 2021; 214:286-286.e1. [PMID: 33629372 DOI: 10.5694/mja2.50969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/10/2020] [Accepted: 11/24/2020] [Indexed: 11/17/2022]
Affiliation(s)
- Debra S Kennedy
- MotherSafe, Royal Hospital for Women, Sydney, NSW.,University of New South Wales, Sydney, NSW
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Ailes EC, Zimmerman J, Lind JN, Fan F, Shi K, Reefhuis J, Broussard CS, Frey MT, Cragan JD, Petersen EE, Polen KD, Honein MA, Gilboa SM. Using Supervised Learning Methods to Develop a List of Prescription Medications of Greatest Concern during Pregnancy. Matern Child Health J 2020; 24:901-10. [PMID: 32372243 DOI: 10.1007/s10995-020-02942-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
INTRODUCTION Women and healthcare providers lack adequate information on medication safety during pregnancy. While resources describing fetal risk are available, information is provided in multiple locations, often with subjective assessments of available data. We developed a list of medications of greatest concern during pregnancy to help healthcare providers counsel reproductive-aged and pregnant women. METHODS Prescription drug labels submitted to the U.S. Food and Drug Administration with information in the Teratogen Information System (TERIS) and/or Drugs in Pregnancy and Lactation by Briggs & Freeman were included (N = 1,186 medications; 766 from three data sources, 420 from two). We used two supervised learning methods ('support vector machine' and 'sentiment analysis') to create prediction models based on narrative descriptions of fetal risk. Two models were created per data source. Our final list included medications categorized as 'high' risk in at least four of six models (if three data sources) or three of four models (if two data sources). RESULTS We classified 80 prescription medications as being of greatest concern during pregnancy; over half were antineoplastic agents (n = 24), angiotensin converting enzyme inhibitors (n = 10), angiotensin II receptor antagonists (n = 8), and anticonvulsants (n = 7). DISCUSSION This evidence-based list could be a useful tool for healthcare providers counseling reproductive-aged and pregnant women about medication use during pregnancy. However, providers and patients may find it helpful to weigh the risks and benefits of any pharmacologic treatment for both pregnant women and the fetus when managing medical conditions before and during pregnancy.
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Abstract
Given the high rate of alcoholism throughout history, its effects on the fetus may have existed for millennia. But, the claim that Greeks and Romans were aware of fetal alcohol syndrome rests on incorrect citations. From 1725, maternal alcohol consumption was associated with retarded fetal growth and neurological anomalies. From 1809, scientists followed Lamarck's theory that the disorders parents acquire during their lifetime are passed on to their offspring. Fetal effects were thought to be inherited mainly from the father. During the 19th century, parental alcoholism became associated with malformations. In 1915, Ballantyne distinguished genetic influence via germ cells from toxin's effect on the embryo. Fetal alcohol syndrome was characterized by Rouquette [Influence de la toxicomanie alcoolique parentale sur le développement physique et psychique des jeunes enfants] in 1957 and Lemoine et al. [Ouest Medical. 1968;21:476-482] in 1968 as consisting of 4 features: (A) facial anomalies (narrow forehead, retracted upper lip, and cupped ears), (B) severe growth retardation (prenatal and postnatal), (C) malformations (limbs, cardiac, and visceral), and (D) central nervous system anomalies (hyperexcitability and mental retardation). But, their studies, written in French, remained disregarded. In 1973, Jones et al. [Lancet. 1973;302:999-1001] reported "the first association between maternal alcoholism and aberrant morphogenesis in the offspring." The history of fetal alcohol syndrome reveals shortcomings in citation practice. Alleged quotations remained unverified, non-English publications neglected, and short quotations taken out of context. Prejudiced by religious and abstinence groups, reports on alcohol damage to the unborn were fraught with emotions, moralizing, social implications, and presentism, the interpretation of past events with present knowledge.
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Affiliation(s)
- Michael Obladen
- Department of Neonatology, Charité University Medicine, Berlin, Germany
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31
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Min MO, Minnes S, Momotaz H, Singer LT, Wasden A, Bearer CF. Fatty acid ethyl esters in meconium and substance use in adolescence. Neurotoxicol Teratol 2021; 83:106946. [PMID: 33340653 PMCID: PMC7855880 DOI: 10.1016/j.ntt.2020.106946] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 12/10/2020] [Accepted: 12/13/2020] [Indexed: 12/19/2022]
Abstract
Prenatal alcohol exposure (PAE) continues to be a serious public health problem, yet no reliable clinical tools are available for assessing levels of drinking during pregnancy. Fatty acid ethyl esters (FAEEs), the nonoxidative metabolites of ethanol measured in meconium, are potential biomarkers to quantify the level of PAE. The association between the concentrations of FAEEs from meconium and adolescent substance use and related problems was examined in a prospective birth-cohort of adolescents exposed to alcohol and drugs in utero. FAEEs were quantified with gas chromatography via a flame ionization detector. Meconium was analyzed for FAEEs in 216 newborns; 183 of them (81 boys, 102 girls) were assessed at age 15 for alcohol, tobacco, and marijuana use using biologic assays and self-report. Substance use problems were assessed using the Problem Oriented Screening Instrument for Teenagers. Findings from multivariable logistic regression analyses indicated that, after controlling for other prenatal drug exposure and covariates, higher concentrations of FAEEs (ethyl myristate, ethyl palmitate, ethyl oleate, ethyl linoleate, ethyl linolenate, and ethyl arachidonate) were related to a greater likelihood of marijuana use and experiencing substance use problems, but not tobacco or alcohol use, at age 15. Elevated levels of FAEEs in meconium may be promising markers for PAE, identifying newborns at risk for early substance use and developing substance use problems.
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Affiliation(s)
- Meeyoung O Min
- College of Social Work, University of Utah, United States.
| | - Sonia Minnes
- Jack, Joseph and Morton Mandel School of Applied Social Sciences, Case Western Reserve University, United States
| | - Hasina Momotaz
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, United States
| | - Lynn T Singer
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, United States
| | - Anna Wasden
- College of Social Work, University of Utah, United States
| | - Cynthia F Bearer
- Department of Pediatrics, Case Western Reserve University, United States
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Giampreti A, Eleftheriou G, Gallo M, Butera R, Contessa G, Faraoni L, Sangiovanni A, Negri G, Falchi G, Bacis G. Medications prescriptions in COVID-19 pregnant and lactating women: the Bergamo Teratology Information Service experience during COVID-19 outbreak in Italy. J Perinat Med 2020; 48:1001-1007. [PMID: 33055313 DOI: 10.1515/jpm-2020-0339] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 09/27/2020] [Indexed: 02/06/2023]
Abstract
Objectives The severe acute respiratory syndrome coronavirus 2 (COVID-19) outbreak in Italy, especially in Lombardy and Bergamo city, represented probably nowadays one of the first major clusters of COVID-19 in the world. The aim of this report is to describe the activity of Bergamo Teratology Information Service (TIS) in supporting the public and health-care personnel in case of drug prescriptions in suspected/confirmed COVID-19 pregnant and lactating patients during COVID-19 outbreak in Italy. Methods All Bergamo TIS requests concerning COVID-19 pregnant and lactating women have been retrospectively evaluated from 1 March to 15 April 2020. Type of medications, drug's safety profile and compatibility with pregnancy and lactation are reported. Results Our service received information calls concerning 48 (9 pregnant, 35 lactating) patients. Among pregnant and lactating women, the requests of information were related to 16 and 60 drugs prescriptions respectively. More than half concerned drugs prescriptions during the first and second trimester (13/16) and during the first six months of lactation (37/60). Hydroxychloroquine and azithromycin were the most involved. Conclusions Hydroxychloroquine and azithromycin at dosages used for COVID-19 may be considered compatible and reasonably safe either in pregnancy and lactation. Antivirals may be considered acceptable in pregnancy. During lactation lopinavir and ritonavir probably exhibit some supportive data from literature that darunavir and cobicistat do not. Tocilizumab may be considered for COVID-19 treatment because no increased malformation rate were observed until now. However caution may be advised because human data are limited and the potential risk of embryo-fetal toxicity cannot be excluded.
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Affiliation(s)
- Andrea Giampreti
- Bergamo Teratology Information Service, Papa Giovanni XXIII Hospital, 24100 BergamoItaly
| | - Georgios Eleftheriou
- Bergamo Teratology Information Service, Papa Giovanni XXIII Hospital, 24100 BergamoItaly
| | - Mariapina Gallo
- Bergamo Teratology Information Service, Papa Giovanni XXIII Hospital, 24100 BergamoItaly
| | - Raffaella Butera
- Bergamo Teratology Information Service, Papa Giovanni XXIII Hospital, 24100 BergamoItaly
| | - Gioia Contessa
- Bergamo Teratology Information Service, Papa Giovanni XXIII Hospital, 24100 BergamoItaly
| | - Lorella Faraoni
- Bergamo Teratology Information Service, Papa Giovanni XXIII Hospital, 24100 BergamoItaly
| | - Anna Sangiovanni
- Bergamo Teratology Information Service, Papa Giovanni XXIII Hospital, 24100 BergamoItaly
| | - Giulia Negri
- Bergamo Teratology Information Service, Papa Giovanni XXIII Hospital, 24100 BergamoItaly
| | - Giovanna Falchi
- Bergamo Teratology Information Service, Papa Giovanni XXIII Hospital, 24100 BergamoItaly
| | - Giuseppe Bacis
- Bergamo Teratology Information Service, Papa Giovanni XXIII Hospital, 24100 BergamoItaly
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Reece AS, Hulse GK. Broad Spectrum epidemiological contribution of cannabis and other substances to the teratological profile of northern New South Wales: geospatial and causal inference analysis. BMC Pharmacol Toxicol 2020; 21:75. [PMID: 33183341 PMCID: PMC7659114 DOI: 10.1186/s40360-020-00450-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 09/24/2020] [Indexed: 02/07/2023] Open
Abstract
Background Whilst cannabis commercialization is occurring rapidly guided by highly individualistic public narratives, evidence that all congenital anomalies (CA) increase alongside cannabis use in Canada, a link with 21 CA’s in Hawaii, and rising CA’s in Colorado indicate that transgenerational effects can be significant and impact public health. It was therefore important to study Northern New South Wales (NNSW) where cannabis use is high. Methods Design: Cohort. 2008–2015. Setting: NNSW and Queensland (QLD), Australia. Participants. Whole populations. Exposures. Tobacco, alcohol, cannabis. Source: National Drug Strategy Household Surveys 2010, 2013. Main Outcomes. CA Rates. NNSW-QLD comparisons. Geospatial and causal regression. Results Cardiovascular, respiratory and gastrointestinal anomalies rose with falling tobacco and alcohol but rising cannabis use rates across Queensland. Maternal age NNSW-QLD was not different (2008–2015: 4265/22084 v. 96,473/490514 > 35 years/total, Chi.Sq. = 1.687, P = 0.194). A higher rate of NNSW cannabis-related than cannabis-unrelated defects occurred (prevalence ratio (PR) = 2.13, 95%C.I. 1.80–2.52, P = 3.24 × 10− 19). CA’s rose more potently with rising cannabis than with rising tobacco or alcohol use. Exomphalos and gastroschisis had the highest NNSW:QLD PR (6.29(2.94–13.48) and 5.85(3.54–9.67)) and attributable fraction in the exposed (84.11%(65.95–92.58%) and 82.91%(71.75–89.66%), P = 2.83 × 10− 8 and P = 5.62 × 10− 15). In multivariable geospatial models cannabis was significantly linked with cardiovascular (atrial septal defect, ventricular septal defect, tetralogy of Fallot, patent ductus arteriosus), genetic (chromosomal defects, Downs syndrome), gastrointestinal (small intestinal atresia), body wall (gastroschisis, diaphragmatic hernia) and other (hypospadias) (AVTPCDSGDH) CA’s. In linear modelling cannabis use was significantly linked with anal stenosis, congenital hydrocephalus and Turner syndrome (ACT) and was significantly linked in borderline significant models (model P < 0.1) with microtia, microphthalmia, and transposition of the great vessels. At robust and mixed effects inverse probability weighted multivariable regression cannabis was related to 18 defects. 16/17 E-Values in spatial models were > 1.25 ranging up to 5.2 × 1013 making uncontrolled confounding unlikely. Conclusions These results suggest that population level CA’s react more strongly to small rises in cannabis use than tobacco or alcohol; cardiovascular, chromosomal, body wall and gastrointestinal CA’s rise significantly with small increases in cannabis use; that cannabis is a bivariate correlate of AVTPCDSGDH and ACT anomalies, is robust to adjustment for other substances; and is causal. Supplementary information Supplementary information accompanies this paper at 10.1186/s40360-020-00450-1.
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Affiliation(s)
- Albert Stuart Reece
- Division of Psychiatry, University of Western Australia, Crawley, Western Australia, 6009, Australia. .,School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, 6027, Australia. .,, Brisbane, Australia.
| | - Gary Kenneth Hulse
- Division of Psychiatry, University of Western Australia, Crawley, Western Australia, 6009, Australia.,School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, 6027, Australia
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Cuschieri A, Calleja-Agius J. Wnt/PCP signalling cascade disruption by JNK inhibition as a potential mechanism underlying the teratogenic effects of potato glycoalkaloids. Mol Biol Rep 2020; 47:9235-8. [PMID: 33099761 DOI: 10.1007/s11033-020-05921-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/13/2020] [Indexed: 12/17/2022]
Abstract
It is hypothesised that the inhibition of the non-canonical Wnt/PCP intracellular signalling cascade by potato glycoalkaloids, [Formula: see text]-solanine and [Formula: see text]-chaconine, results in an increased risk of neural tube defects (NTDs). One very prominent intracellular signalling pathway with substantial implications in the development and closure of the neural tube is the Wnt/PCP pathway. Experimental inhibition of this results in NTDs. A vital element of this signalling cascade is JNK, which controls the transcription of DNA, which controls cell polarity and directional cell migration. JNK inhibition also results in NTDs experimentally. Through their use in cancer research, [Formula: see text]-solanine and [Formula: see text]-chaconine were found to inhibit metastasis by inhibiting JNK, among other intracellular signalling molecules. Thus, this shows that potato glycoalkaloids increase the likelihood of causing NTDs by inhibiting the proper functioning of JNK in the Wnt/PCP pathway, resulting in defective neural tube closure.
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Bovendeert JFM, Nievelstein RAJ, Bleys RLAW, Cleypool CGJ. A parapagus dicephalus tripus tribrachius conjoined twin with a unique morphological pattern: a case report. J Med Case Rep 2020; 14:176. [PMID: 33008470 PMCID: PMC7532563 DOI: 10.1186/s13256-020-02501-x] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 08/17/2020] [Indexed: 01/13/2023] Open
Abstract
Background Conjoined twinning is a rare congenital malformation with an incidence of about 1.5 per 100,000 births. Because no consensus has been reached regarding the dysmorphology, thorough descriptions of conjoined twins as part of teratological collections can be useful to increase knowledge of this congenital malformation. In this case report, we describe a parapagus dicephalus twin from the collection of the Department of Anatomy of the University Medical Center Utrecht in the Netherlands. External anatomical characteristics were assessed through a detailed macroscopic examination and internal characteristics by means of whole-body computed tomography and magnetic resonance imaging (3 Tesla). Case presentation Macroscopic examination showed a Caucasian male parapagus dicephalus tripus tribrachius conjoined twin a type of conjoined twinning in which there are two heads side by side, one rump, and three upper and three lower limbs. In addition, anencephaly was observed in the left twin. Radiological imaging showed a normal central nervous system in the right twin and absence of the calvaria, cerebrum, diencephalon, and mesencephalon in the left twin. There was clear duplication of the vertebral column, rib cage, respiratory system, and gastrointestinal system at least up to and including the first part of the duodenum. The heart consisted of a monoatrium with two separate ventricles. There was a fused liver with a single gallbladder, a single spleen, three kidneys, two bladders, and duplication of the penis. The third upper and lower extremities were articulating with a fused glenoid and acetabulum, respectively. The third foot showed both polydactyly and syndactyly of the toes. Conclusion This case report describes a unique case of a male dicephalus parapagus tripus tribrachus conjoined twin discordant for anencephaly. Radiological imaging proved to be an adequate noninvasive method to provide insights into the internal (dys)morphology of this specific specimen, improving its scientific and educational value. This approach could be generally applied to other teratological specimens, thereby strengthening arguments regarding pathogenetic hypotheses, which may lead to new or improved insights into both normal and abnormal embryonic development.
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Affiliation(s)
| | - Rutger A J Nievelstein
- Department of Radiology & Nuclear Medicine, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Ronald L A W Bleys
- Department of Anatomy, Division of Surgical Specialties, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Cindy G J Cleypool
- Department of Anatomy, Division of Surgical Specialties, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.
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Townley MA, Harms D. Temperature fluctuations during embryonic development implicated in a naturally occurring instance of abnormal spinnerets in the spider Australomimetus maculosus (Araneae, Mimetidae). Arthropod Struct Dev 2020; 57:100945. [PMID: 32361425 DOI: 10.1016/j.asd.2020.100945] [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: 02/02/2020] [Revised: 03/26/2020] [Accepted: 04/04/2020] [Indexed: 06/11/2023]
Abstract
We record developmental abnormalities of the spinnerets in a field-collected adult male specimen of Australomimetus maculosus. These include (1) a supernumerary right posterior lateral spinneret (PLS), (2) ectopic piriform silk gland spigots and tartipores on the left PLS that are normally restricted to anterior lateral spinnerets (ALSs), and (3) what appear to be ectopic ALS sensilla on the left posterior median spinneret (PMS). Published results of teratological experiments and climate data for the collection site indicate that fluctuating sub- and supra-optimal temperatures during embryogenesis may have been responsible for these anomalies. This specimen thus supports the view that spinneret abnormalities, among other aberrations, may be induced when embryos of entelegyne spiders are exposed to fluctuations between high and low temperatures, whether in the laboratory or, as here, in nature. To our knowledge, the ectopic structures seen on the left PLS and left PMS have not been observed previously. Their locations are consistent with a hypothesis by which only the lateral portion of the araneomorph ALS is serially homologous to the PLS, while the remainder of the ALS, along with the colulus/cribellum, is homologous to the PMS.
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Affiliation(s)
- Mark A Townley
- University Instrumentation Center, University of New Hampshire, 23 Academic Way, Durham, NH, 03824, USA.
| | - Danilo Harms
- Zoological Museum, Center of Natural History, Universität Hamburg, Martin-Luther-King-Platz 3, D-20146, Hamburg, Germany.
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Lenoir C, Boumaïza S, Ing Lorenzini KR, Boulvain M, Desmeules JA, Rollason V. Outcomes of drug exposition during pregnancy: Analysis from a teratology information service. Eur J Obstet Gynecol Reprod Biol 2020; 247:42-48. [PMID: 32058188 DOI: 10.1016/j.ejogrb.2020.01.042] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/27/2020] [Accepted: 01/29/2020] [Indexed: 11/18/2022]
Abstract
OBJECTIVE We aimed to characterize drug exposures during pregnancy where the outcome was known that had benefited from counselling through our Teratology Information Service (TIS) between 1994-2016. STUDY DESIGN This observational study analysed data collected through the drug exposures during pregnancy counselling. Data was analysed descriptively. RESULTS Data from a total of 1'374 pregnant women were collected. Mean age was of 32 years. These women were exposed to more than ten drugs in 1.4 % (N = 19) of cases, with a mean drug intake of two. Analysis of the drugs altogether (N = 3'129) showed that FDA Pregnancy Category C drugs represented 42.9 % (N = 1'342) of drugs and ATC code N (nervous system) represented 36.4 % (N = 1'138). The onset of drug exposure was during the first trimester of pregnancy in 95.1 % (N = 2'982) of patients. Regarding outcomes, the rate of induced abortion was 10.8 % (N = 151), of pregnancy complications was 11.2 % (N = 157) and of malformations was 4.5 % (N = 49). CONCLUSION Pregnant women counselled by our TIS take a mean of two drugs, ranging from one to 17. Drugs are from FDA Pregnancy Category C and ATC N drugs in most cases, 42.9 % and 36.4 % respectively. The rate of malformation of our cohort was of 4.5 %, close to the estimated spontaneous rate of malformation. This data gives a reassuring aspect of drug exposure in pregnancy but takes into account the outcome at birth only.
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Affiliation(s)
- Camille Lenoir
- Division of Clinical Pharmacology & Toxicology, Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals & University of Geneva, Geneva, Switzerland
| | - Sabrina Boumaïza
- Division of Clinical Pharmacology & Toxicology, Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals & University of Geneva, Geneva, Switzerland
| | - Kuntheavy R Ing Lorenzini
- Division of Clinical Pharmacology & Toxicology, Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals & University of Geneva, Geneva, Switzerland
| | - Michel Boulvain
- Department of Obstetrics & Gynaecology, Geneva University Hospitals, Geneva, Switzerland
| | - Jules A Desmeules
- Division of Clinical Pharmacology & Toxicology, Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals & University of Geneva, Geneva, Switzerland
| | - Victoria Rollason
- Division of Clinical Pharmacology & Toxicology, Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals & University of Geneva, Geneva, Switzerland.
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Abstract
Fetal Alcohol Spectrum Disorder (FASD) is a complex set of developmental malformations, neurobehavioral anomalies and mental disabilities induced by exposing human embryos to alcohol during fetal development. Several experimental models and a series of developmental and biochemical approaches have established a strong link between FASD and reduced retinoic acid (RA) signaling. RA signaling is involved in the regulation of numerous developmental decisions from patterning of the anterior-posterior axis, starting at gastrulation, to the differentiation of specific cell types within developing organs, to adult tissue homeostasis. Being such an important regulatory signal during embryonic development, mutations or environmental perturbations that affect the level, timing or location of the RA signal can induce multiple and severe developmental malformations. The evidence connecting human syndromes to reduced RA signaling is presented here and the resulting phenotypes are compared to FASD. Available data suggest that competition between ethanol clearance and RA biosynthesis is a major etiological component in FASD.
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Affiliation(s)
- Abraham Fainsod
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Faculty of Medicine, The Hebrew University of Jerusalem, Ein Kerem, POB 12271, 9112102, Jerusalem, Israel.
| | - Liat Bendelac-Kapon
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Faculty of Medicine, The Hebrew University of Jerusalem, Ein Kerem, POB 12271, 9112102, Jerusalem, Israel
| | - Yehuda Shabtai
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Faculty of Medicine, The Hebrew University of Jerusalem, Ein Kerem, POB 12271, 9112102, Jerusalem, Israel
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Abstract
Background: MotherSafe is a free telephone-based counseling service for Australian consumers and health care providers concerned about drug exposures during pregnancy and breastfeeding. Calls relating to breastfeeding are relatively common and a source of significant distress to the breastfeeding mother, particularly if there is a lack of clarity regarding possible adverse effects of drug exposure on the infant. This study seeks to identify the medication exposures of concern for breastfeeding mothers and the information available to address these concerns. Aims: To review calls to MotherSafe about breastfeeding drug exposures during the 19-year period from 2000 to 2018 and to highlight drugs of concern and counseling issues. Materials and Methods: A retrospective descriptive assessment of a prospectively collected Access database was undertaken. Phone counseling records identified the medication (and other) exposures of concern regarding breastfeeding. The information about medication exposures via breastfeeding provided in consumer and product information (PI) was also reviewed. Results: Of a total of 315,158 calls received at MotherSafe between 2000 and 2018, 116,876 (37.1%) were regarding drug exposure via breastfeeding; 30% of these calls related to nonsteroidal anti-inflammatory drugs, antihistamines, antidepressants, simple analgesics, and antibiotics, and 5% were regarding an exposure specifically contraindicated when breastfeeding. Conclusions: Queries about medication exposures via breastfeeding represent a significant proportion of all the counseling calls to MotherSafe. This study demonstrates the inconsistent and often misleading information about breastfeeding exposures found in consumer and PI sheets and online and highlights the important role of Teratogen Information Services like MotherSafe in providing evidence-based information to both consumers and health care providers.
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Affiliation(s)
- Elizabeth Hegedus
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Diana J Oakes
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Majella Hill
- MotherSafe, The Royal Hospital for Women, Sydney, New South Wales, Australia
| | - Helen E Ritchie
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Debra S Kennedy
- MotherSafe, The Royal Hospital for Women, Sydney, New South Wales, Australia
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Orzabal MR, Lunde-Young ER, Ramirez JI, Naik VD, Hillhouse A, Konganti K, Threadgill DW, Ramadoss J. Gestational binge alcohol-induced alterations in maternal uterine artery transcriptome. Reprod Toxicol 2019; 87:42-49. [PMID: 31078653 PMCID: PMC6628922 DOI: 10.1016/j.reprotox.2019.05.053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 11/30/2018] [Revised: 05/02/2019] [Accepted: 05/08/2019] [Indexed: 12/13/2022]
Abstract
Binge alcohol exposure during pregnancy results in diminished vessel function and altered proteome in the maternal uterine artery. We aimed to utilize high throughput RNA-seq deep-sequencing to characterize specific effects of binge alcohol exposure during pregnancy on the uterine artery transcriptome, and gain insight into mechanisms underlying alcohol-mediated uterine artery dysfunction. Pregnant Sprague-Dawley rats assigned to Pair-Fed Control or Alcohol groups, received a once-daily orogastric gavage in a binge paradigm. RNA-sequencing using Illumina NextSeq 500, identified 13,941 genes; 40 significantly altered genes were altered by log2(fold change) > 2; 27 genes were upregulated and 13 were downregulated in the Alcohol group. Transcripts altered included those which encode for aldehyde dehydrogenases, matrix metalloproteases, and molecules vital for vasodilation and vascular remodeling. Biological pathways that were disproportionally altered by alcohol were proline and citrulline biosynthesis/metabolism. Disruption of these pathways suggests candidate mechanism(s) for alcohol-mediated impairments to the proteome and vascular function.
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Affiliation(s)
- Marcus R Orzabal
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Emilie R Lunde-Young
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Josue I Ramirez
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Vishal D Naik
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Andrew Hillhouse
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, and the Texas A&M Institute of Genome Sciences, TX, USA
| | - Kranti Konganti
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, and the Texas A&M Institute of Genome Sciences, TX, USA
| | - David W Threadgill
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, and the Texas A&M Institute of Genome Sciences, TX, USA
| | - Jayanth Ramadoss
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA.
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Abstract
Many conditions that require frequent medication use are common during pregnancy. The purpose of this article is to list some of the most common of these disorders and to discuss the risk to the developing fetus of the medications used most frequently to treat them. Included are drugs used for the treatment of asthma, nausea and vomiting, hyperthyroidism, pain and fever, and depression during pregnancy.
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Affiliation(s)
- Elizabeth Kiernan
- Department of Pediatrics, University of California, San Diego, 9500 Gilman Drive, Mail Code #0828, La Jolla, CA 92039, USA
| | - Kenneth L Jones
- Department of Pediatrics, University of California, San Diego, 9500 Gilman Drive, Mail Code #0828, La Jolla, CA 92039, USA.
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Gotardo AT, Mattos MIDS, Hueza IM, Górniak SL. The effect of Cynara scolymus (artichoke) on maternal reproductive outcomes and fetal development in rats. Regul Toxicol Pharmacol 2019; 102:74-78. [PMID: 30611817 DOI: 10.1016/j.yrtph.2019.01.004] [Citation(s) in RCA: 5] [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: 08/16/2018] [Revised: 12/26/2018] [Accepted: 01/02/2019] [Indexed: 11/18/2022]
Abstract
Cynara scolymus (C.scolymus) is a plant employed worldwide as an herbal medicine. However, there is a paucity of data related to the evaluation of its toxicity in commercial preparations; thus, the aim of this study was to evaluate the possible teratogenic effect of the dry extract of C.scolymus leaves in Wistar rats. Females were treated, from gestation day (GD) 6 until GD19, with 0.0, 1.0, 2.0 or 4.0 g/kg body weight of C.scolymus extract. At GD20, a cesarean section was performed for evaluation of maternal and fetal parameters. C.scolymus did not induce changes in food consumption, preimplantation or postimplantation losses, placental weight or biochemical profile. An increase in water consumption was observed in pregnant females treated with the higher doses of C.scolymus. Experimental groups showed lower body weight gain during pregnancy and lower gravid uterus weight. Maternal body weight minus the gravid uterus weight did not result in significant differences. Reductions in fetal weight and length were observed in experimental groups. The number of live pups per litter was lower in the highest dose group. No fetal skeletal or visceral malformations were detected. The results showed that the consumption of artichoke during pregnancy clearly has a negative impact on fetuses.
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Affiliation(s)
- André Tadeu Gotardo
- Research Centre for Veterinary Toxicology (CEPTOX) - Department of Pathology, School of Veterinary Medicine and Animal Sciences, University of São Paulo, Pirassununga 05508-270, SP, Brazil
| | - Maria Izabel da Silva Mattos
- Research Centre for Veterinary Toxicology (CEPTOX) - Department of Pathology, School of Veterinary Medicine and Animal Sciences, University of São Paulo, Pirassununga 05508-270, SP, Brazil
| | - Isis Machado Hueza
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo (ICAQF-UNIFESP), Campus Diadema, Diadema, Brazil
| | - Silvana Lima Górniak
- Research Centre for Veterinary Toxicology (CEPTOX) - Department of Pathology, School of Veterinary Medicine and Animal Sciences, University of São Paulo, Pirassununga 05508-270, SP, Brazil.
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Abstract
The chicken embryo is a versatile and effective model for studying the effects of teratogenic compounds during early development. Easy access to the embryo allows for exposure and analysis of toxicant effects during embryogenesis. This chapter will provide detailed protocols for embryonic collection and toxicant exposure techniques, including EC culture and Cornish Pasty methods, LysoTracker staining, glutathione redox potential analysis, and 2',7'-dichlorodihydrofluorescein diacetate.
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Seegmiller RE, Cook N, Goodwin K, Leishman T, Graf M. Assessment of Gross Fetal Malformations: The Modernized Wilson Technique and Skeletal Staining. Methods Mol Biol 2019; 1965:421-434. [PMID: 31069690 DOI: 10.1007/978-1-4939-9182-2_27] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Teratology is the study of anatomical and physiological abnormalities, commonly known as birth defects. If an embryo is exposed to a harmful substance, or teratogen, during the critical period of development, an ensuing malformation may occur. These malformations and their associated mechanisms are studied and analyzed in laboratory animals in order to prevent them from occurring in humans. Rodents such as rats and mice have commonly been used in such studies because of their similarity to humans. In 1959, James G. Wilson designed, developed, and tested a protocol on how to observe and analyze structural malformations in rodent fetuses, which included: external examination, skeletal evaluation, soft tissue analysis, and data collection/analysis. For standardization purposes, i.e., to normalize findings from one lab to another, it is important that this protocol be followed with precision. Although many years have passed since Wilson initially created this protocol, it is still widely used to this day, and only minor changes have been made to his instructions such as the chemical reagents used in the experiments and methods of analysis of the experimental data. Such testing has resulted in major advances in the dissemination of teratology information, including the identification of an increasing number of teratogens and the understanding of the pathogenesis of birth defects. While mechanistically birth defect prevention will include the understanding of individual genomes and pharmacogenomics, overall, morphological assessment will still be required as an integral part of birth defects research. As the interaction between teratogenic and genetic factors is better understood, it is anticipated that the incidence of most types of defects will substantially be reduced.
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Affiliation(s)
- Robert E Seegmiller
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, UT, USA.
| | - Nathan Cook
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, UT, USA
| | - Korance Goodwin
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, UT, USA
| | - Timothy Leishman
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, UT, USA
| | - Michelle Graf
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, UT, USA
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Bromley RL, Baker GA, Clayton-Smith J, Wood AG. Intellectual functioning in clinically confirmed fetal valproate syndrome. Neurotoxicol Teratol 2018; 71:16-21. [PMID: 30453023 DOI: 10.1016/j.ntt.2018.11.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Revised: 10/17/2018] [Accepted: 11/15/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND An increased risk of impaired intelligence (IQ) has been documented in valproate-exposed children, but investigations have not previously focused on those with a clinical diagnosis of Fetal Valproate Syndrome (FVS). METHODS This cross sectional observational study recruited individuals with a diagnosis of FVS and completed standardized assessments of intellectual abilities making comparisons to a normative comparison group. Both mean difference (MD) and prevalence of scores below the lower average range were analyzed. RESULTS The mean full-scale IQ in 31 individuals with FVS (mean age 14.97; range 6-27 years) was 19 points lower (19.55, 95% CI -24.94 to 14.15), and IQ scores <70 were present in 26%. The mean differences for verbal comprehension (21.07, 95% CI -25.84 to -16.29), working memory (19.77, 95% CI -25.00 to -14.55) and processing speed (16.87, 95% CI -22.24 to -11.50) performances were poorer than expected with the mean differences over one standard deviation from the comparison group. Sixty one percent of cases demonstrated disproportionately lower verbal comprehension ability. There were no significant group differences for IQ in high vs. moderate dose valproate or mono vs. polytherapy. There were no differences in IQ between those with and those without a major congenital malformation. The requirement for educational intervention was high at 74%. CONCLUSION Intellectual difficulties are a central feature of FVS and are more severe in their presentation in individuals with a diagnosis of valproate embryopathy. Individuals with FVS who present with the characteristic facial presentation should be considered at high risk of cognitive difficulties regardless of the dose of valproate exposure or the presence of a major congenital malformation.
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Affiliation(s)
- Rebecca L Bromley
- Division of Evolution and Genomic Science, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK; Royal Manchester Children's Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.
| | - Gus A Baker
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK
| | - Jill Clayton-Smith
- Division of Evolution and Genomic Science, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK; Manchester Centre for Genomic Medicine, St Mary's Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, Manchester, UK
| | - Amanda G Wood
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham B4 7ET, UK; Clinical Sciences, Murdoch Children's Research Institute, Flemington Road, Parkville, Victoria 3052, Australia
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Shterenshis M, Roitblat Y, Rosenberg S, Singer M, Lumbroso J. Hemihyperplasia: History of medicine assists medical genetics. Homo 2018; 69:227-236. [PMID: 30219584 DOI: 10.1016/j.jchb.2018.08.006] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 08/22/2018] [Indexed: 10/28/2022]
Abstract
This paper examines the role of the history of medicine in case of congenital isolated hemihyperplasia. Isolated hemihyperplasia is a genetic disorder in which one side of the body grows more than the other, causing visible lateral asymmetry of the human body. The date of the occurrence of the genetic mutation that leads to hemihyperplasia is not known yet. The aim of the current research was to confirm or to disprove the fact that isolated hemihyperplasia was first described in the first half of the 19th century. Using the case of hemihyperplasia we aimed to demonstrate how historical analysis may assist medical genetics in cases when estimating a mutation date is necessary. Medical literature from 1573 onwards was searched for any mention of hemihypertrophy, hemihyperplasia, hemi-gigantism, partial gigantism, hemi-macrosomia and other possible descriptions for pathological lateral body overgrowth. Historical analysis suggests that the mutation in question occurred in the first half of the 19th century, approximately 200 years ago. This led to the appearance of hemihyperplasia and subsequent hemihyperplasia-including syndromes. An additional genetic research is needed for investigation of the development of the involved chromosomal region instability since this period. Such research may use the timeline orientation provided by the history of medicine.
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Affiliation(s)
- Michael Shterenshis
- Department of Anatomy, Alexander Muss High School in Israel (AMHSI) affiliated with Alexander Muss Institute for Israel Education (AMIIE), Hod HaSharon 45102, Israel.
| | - Yulia Roitblat
- Department of Sciences, Yohana Jabotinsky Youth Town for Sciences and Arts Six-Year Comprehensive School, Beer Yakov 70350, Israel
| | - Sari Rosenberg
- Department of Sciences, Columbia High School, Maplewood, NJ 07040, USA
| | - Monica Singer
- German Department, Alexander Muss High School in Israel (AMHSI) affiliated with Alexander Muss Institute for Israel Education (AMIIE), Hod HaSharon 45102, Israel
| | - Jeanne Lumbroso
- French Department, Alexander Muss High School in Israel (AMHSI) affiliated with Alexander Muss Institute for Israel Education (AMIIE), Hod HaSharon 45102, Israel
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Bushita H, Liu S, Ohta T, Ito Y, Saito K, Nukada Y, Ikeda N, Morita O. Effects of dietary alpha-linolenic acid-enriched diacylglycerol oil on embryo/fetal development in rats. Regul Toxicol Pharmacol 2018; 98:108-114. [PMID: 30009862 DOI: 10.1016/j.yrtph.2018.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 04/06/2018] [Accepted: 07/11/2018] [Indexed: 12/12/2022]
Abstract
Recent studies suggest that diets supplemented with alpha-linolenic acid (ALA)-enriched diacylglycerol (DAG) oil provide potential health benefits in preventing or managing obesity. However, available safety information about reproductive and developmental toxicities of ALA-DAG oil is limited. This study was conducted to clarify the effect, if any, of ALA-DAG oil on embryo-fetal development, following maternal exposure during the critical period of major organogenesis. ALA-DAG oil was administered via gavage to pre-mated female Sprague Dawley rats from gestation day 6 through 19, at dose levels of 0, 1.25, 2.5, and 5.0 mL/kg/day (equivalent to 0, 1149, 2325, and 4715 mg/kg/day, respectively), with total volume adjusted to 5 mL/kg/day with rapeseed oil. All females survived to the scheduled necropsy. There were no treatment-related changes in clinical or internal findings, maternal body weights, feed consumption, intrauterine growth, survival, and number of implantations. No ALA-DAG oil-related fetal malformations or developmental variations were noted. A maternal maximum tolerated dose for ALA-DAG oil could not be achieved in this study. Based on these results, a dose level of 5.0 mL/kg (4715 mg/kg/day), the highest dose tested, was considered as the no-observed-adverse-effect level (NOAEL) for both maternal and developmental toxicity.
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Affiliation(s)
- Hiroto Bushita
- R&D Safety Science Research, Kao Corporation, 2-1-3, Bunka, Sumida-ku, Tokyo, 131-8501, Japan.
| | - Shujie Liu
- R&D Safety Science Research, Kao Corporation, 2606, Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Takafumi Ohta
- Kumamoto Safety Assessment Department, Nonclinical Research Center, Drug Development Service Segment, LSI Medience Corporation, 1285, Kurisaki-machi, Uto-shi, Kumamoto, 869-0425, Japan
| | - Yuichi Ito
- R&D Safety Science Research, Kao Corporation, 2-1-3, Bunka, Sumida-ku, Tokyo, 131-8501, Japan
| | - Kazutoshi Saito
- R&D Safety Science Research, Kao Corporation, 2606, Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Yuko Nukada
- R&D Safety Science Research, Kao Corporation, 2606, Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Naohiro Ikeda
- R&D Safety Science Research, Kao Corporation, 2606, Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
| | - Osamu Morita
- R&D Safety Science Research, Kao Corporation, 2606, Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, Japan
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Dörken VM, Rudall PJ. Understanding the cone scale in Cupressaceae: insights from seed-cone teratology in Glyptostrobus pensilis. PeerJ 2018; 6:e4948. [PMID: 29868298 PMCID: PMC5985763 DOI: 10.7717/peerj.4948] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 05/21/2018] [Indexed: 01/16/2023] Open
Abstract
Both wild-type and teratological seed cones are described in the monoecious conifer Glyptostrobus pensilis and compared with those of other Cupressaceae sensu lato and other conifers. Some Cupressaceae apparently possess a proliferation of axillary structures in their cone scales. In our interpretation, in Glyptostrobus each bract of both typical and atypical seed cones bears two descending accessory shoots, interpreted here as seed scales (ovuliferous scales). The primary seed scale is fertile and forms the ovules, the second is sterile and forms characteristic tooth-like structures. The bract and the two axillary seed scales are each supplied with a single distinct vascular bundle that enters the cone axis as a separate strand; this vasculature also characterises the descending accessory short shoots in the vegetative parts of the crown. In wild-type seed cones, the fertile seed scale is reduced to its ovules, and the ovules are always axillary. In contrast, the ovules of some of the teratological seed cones examined were located at the centre of the cone scale. An additional tissue found on the upper surface of the sterile lower seed scale is here interpreted as the axis of the fertile seed scale. Thus, the central position of the ovules can be explained by recaulescent fusion of the upper fertile and lower sterile seed scales. In several teratological cone scales, the ovules were enveloped by an additional sterile tissue that is uniseriate and represents an epidermal outgrowth of the fertile seed scale. Close to the ovules, the epidermis was detached from lower tissue and surrounded the ovule completely, except at the micropyle. These teratological features are potentially significant in understanding seed-cone homologies among extant conifers.
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Daston GP, Beekhuijzen M. Is omphalocele a non-specific malformation in New Zealand White rabbits? Reprod Toxicol 2018; 78:29-39. [PMID: 29550350 DOI: 10.1016/j.reprotox.2018.03.006] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 03/09/2018] [Accepted: 03/13/2018] [Indexed: 10/17/2022]
Abstract
We evaluated the incidence of omphalocele, a malformation that occurs sporadically in many studies. We assembled data on external malformations using all treatment groups from every study published in three major journals over the past 35 years using New Zealand White rabbits. Fifty-eight papers were included: 4905 litters and 36,977 fetuses. Omphalocele was reported in 43% and was among the most common defects, occurring at a rate of 1.10% (litter) and 0.16% (fetus). The defect did not appear to be treatment-related, although it may have been in two studies, based on rate and dose-responsiveness. Removing these two studies from the analysis, the defect was still prevalent (0.77% litter, 0.11% fetal incidence). Three studies evaluated the effects of food restriction and omphalocele was observed with food restriction in two of them, suggesting that decreased maternal weight gain or food consumption may be causal. Otherwise, it appears to be spontaneous and common.
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Lunde-Young R, Davis-Anderson K, Naik V, Nemec M, Wu G, Ramadoss J. Regional dysregulation of taurine and related amino acids in the fetal rat brain following gestational alcohol exposure. Alcohol 2018; 66:27-33. [PMID: 29127884 DOI: 10.1016/j.alcohol.2017.07.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 07/21/2017] [Accepted: 07/24/2017] [Indexed: 12/15/2022]
Abstract
The fetal brain exhibits exquisite alcohol-induced regional neuronal vulnerability. A candidate mechanism for alcohol-mediated brain deficits is disruption of amino acid (AA) bioavailability. AAs are vitally important for proper neurodevelopment, as they comprise the most abundant neurotransmitters in the brain and act as neurotransmitter precursors, nitric oxide donors, antioxidants, and neurotrophic factors, which induce synaptogenesis, neuronal proliferation, and migration. We hypothesized that gestational alcohol alters brain AA concentrations, disrupts AAs associated with neuropathogenesis, and that alterations are region-specific. We assigned pregnant Sprague-Dawley rats to either a pair-fed control or a binge alcohol treatment group on gestational day (GD) 4. Alcohol animals were acclimatized via a once-daily orogastric gavage of a 4.5 g/kg alcohol dose from GD 5-10, and progressed to a 6 g/kg alcohol dose from GD 11-20. Pair-fed animals received isocaloric maltose dextrin (once daily; GD 5-20). Fetal cerebral cortex, cerebellum, and hippocampus were collected on GD 21. Following collection, Fluorometric High Performance Liquid Chromatography (HPLC) involving pre-column derivatization with o-phthaldialdehyde quantified regional content of 22 AAs. Chronic binge alcohol administration to pregnant dams regionally altered AA concentrations in all three structures, with the cerebral cortex exhibiting the least vulnerability and the hippocampus exhibiting maximal vulnerability. We conjecture that the AA imbalances observed in this study are critically implicated in pathological and compensatory processes occurring in the brain in response to gestational alcohol exposure.
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