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42 pages, 1995 KiB  
Review
Gut–Liver–Pancreas Axis Crosstalk in Health and Disease: From the Role of Microbial Metabolites to Innovative Microbiota Manipulating Strategies
by Giada Marroncini, Laura Naldi, Serena Martinelli and Amedeo Amedei
Biomedicines 2024, 12(7), 1398; https://doi.org/10.3390/biomedicines12071398 - 24 Jun 2024
Viewed by 182
Abstract
The functions of the gut are closely related to those of many other organs in the human body. Indeed, the gut microbiota (GM) metabolize several nutrients and compounds that, once released in the bloodstream, can reach distant organs, thus influencing the metabolic and [...] Read more.
The functions of the gut are closely related to those of many other organs in the human body. Indeed, the gut microbiota (GM) metabolize several nutrients and compounds that, once released in the bloodstream, can reach distant organs, thus influencing the metabolic and inflammatory tone of the host. The main microbiota-derived metabolites responsible for the modulation of endocrine responses are short-chain fatty acids (SCFAs), bile acids and glucagon-like peptide 1 (GLP-1). These molecules can (i) regulate the pancreatic hormones (insulin and glucagon), (ii) increase glycogen synthesis in the liver, and (iii) boost energy expenditure, especially in skeletal muscles and brown adipose tissue. In other words, they are critical in maintaining glucose and lipid homeostasis. In GM dysbiosis, the imbalance of microbiota-related products can affect the proper endocrine and metabolic functions, including those related to the gut–liver–pancreas axis (GLPA). In addition, the dysbiosis can contribute to the onset of some diseases such as non-alcoholic steatohepatitis (NASH)/non-alcoholic fatty liver disease (NAFLD), hepatocellular carcinoma (HCC), and type 2 diabetes (T2D). In this review, we explored the roles of the gut microbiota-derived metabolites and their involvement in onset and progression of these diseases. In addition, we detailed the main microbiota-modulating strategies that could improve the diseases’ development by restoring the healthy balance of the GLPA. Full article
(This article belongs to the Section Microbiology in Human Health and Disease)
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9 pages, 3707 KiB  
Article
Passion Fruit Cultivation: An Approach to Internal Leaf Anatomy
by Lucas Aparecido Manzani Lisboa, José Carlos Cavichioli, Thiago de Souza Ferreira, Aldeir da Silva and Paulo Alexandre Monteiro de Figueiredo
Int. J. Plant Biol. 2024, 15(3), 542-550; https://doi.org/10.3390/ijpb15030041 - 24 Jun 2024
Viewed by 350
Abstract
Some species of the genus Passiflora have leaf morphological adaptations that grow to influence the development of the plant in producing areas. Hence, the objective of this work is to quantify and characterize the leaf anatomy of passion fruit species distributed in the [...] Read more.
Some species of the genus Passiflora have leaf morphological adaptations that grow to influence the development of the plant in producing areas. Hence, the objective of this work is to quantify and characterize the leaf anatomy of passion fruit species distributed in the South American region, which can become an important strategy in the selection of species more adapted to the environment where they will be grown. This work evaluates the abaxial and adaxial cuticle thickness (ABCT and ADCT), abaxial and adaxial epidermis thickness (ABET and ADET), xylem diameter (XD), phloem diameter (PD), and thickness of the palisade parenchyma (TPP), of the species Passiflora quadrangularis L., Passiflora foetida L., Passiflora edulis Sims, Passiflora gibertii N.E Brown, Passiflora coccinea Aubl, Passiflora alata Curtis, Passiflora tenuifila Killip, Passiflora caerulea L., and Passiflora cincinnata Mast. Passion fruit species present differences in leaf anatomy, which may influence the plant’s development. The species Passiflora quadrangularis L. showed a greater thickness of cuticles, epidermis, conducting vessels, and palisade parenchyma. The species Passiflora edulis has higher density and stomatal functionality. All Passiflora species formed druses on their leaves. Full article
(This article belongs to the Section Plant Physiology)
11 pages, 442 KiB  
Article
The Role of Obsessive Compulsive Traits in Fibromyalgia: Is Pain-Related Obsessive Ideation Involved in Pathogenesis?
by Bat-El Lugassy-Galper, Mor Amital, Howard Amital, Dan Buskila and Daniela Amital
Medicina 2024, 60(7), 1027; https://doi.org/10.3390/medicina60071027 - 23 Jun 2024
Viewed by 263
Abstract
Background and Objectives: Fibromyalgia syndrome (FMS) is defined as a chronic pain syndrome that is characterized by widespread pain, tenderness, and diffuse stiffness. In addition, neuropsychological symptoms such as fatigue, sleep disorders, poor mood, cognitive impairment, and headaches are often reported. Many [...] Read more.
Background and Objectives: Fibromyalgia syndrome (FMS) is defined as a chronic pain syndrome that is characterized by widespread pain, tenderness, and diffuse stiffness. In addition, neuropsychological symptoms such as fatigue, sleep disorders, poor mood, cognitive impairment, and headaches are often reported. Many reports have addressed the coexistence of affective disorders and anxiety with FMS, yet few have focused on its association with obsessive compulsive disorder (OCD). We investigated the occurrence of classical patterns of OCD in participants with FMS and assessed their effect on pain perception and functional impairment. Material and Methods: The research population included 37 patients diagnosed with FMS, treated at the Rheumatology Clinic in the Sheba Medical Center, Tel-Hashomer, Israel. We used validated questionnaires including a demographic questionnaire, a questionnaire on average and maximal pain intensity, the Eysenck Personality Questionnaire-Revised (EPQ-R), the Perceived Stress Scale, the Pain Catastrophizing Scale, the Pain Obsessive questionnaire, and the Yale–Brown Obsessive Compulsive Scale (Y-BOCS). Results: Patients with FMS were found to have intrusive and obsessive thoughts regarding pain for several hours every day, causing a high degree of anxiety and high levels of pain, catastrophizing, and magnification, leading to helplessness and functional impairment. In total, 27% of the patients reported severe malfunction due to pain and pain ideation, and 49% demonstrated mild obsessive compulsive symptoms that were strongly correlated with pain intensity and functional impairment. Conclusions: Obsessive compulsive thinking patterns contribute to pain magnification and to the cognitive aspects of fibromyalgia syndrome. Full article
(This article belongs to the Section Neurology)
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20 pages, 1082 KiB  
Review
Engineered Resistance to Tobamoviruses
by John Peter Carr
Viruses 2024, 16(7), 1007; https://doi.org/10.3390/v16071007 - 22 Jun 2024
Viewed by 449
Abstract
Tobacco mosaic virus (TMV) was the first virus to be studied in detail and, for many years, TMV and other tobamoviruses, particularly tomato mosaic virus (ToMV) and tobamoviruses infecting pepper (Capsicum spp.), were serious crop pathogens. By the end of the twentieth [...] Read more.
Tobacco mosaic virus (TMV) was the first virus to be studied in detail and, for many years, TMV and other tobamoviruses, particularly tomato mosaic virus (ToMV) and tobamoviruses infecting pepper (Capsicum spp.), were serious crop pathogens. By the end of the twentieth and for the first decade of the twenty-first century, tobamoviruses were under some degree of control due to introgression of resistance genes into commercial tomato and pepper lines. However, tobamoviruses remained important models for molecular biology, biotechnology and bio-nanotechnology. Recently, tobamoviruses have again become serious crop pathogens due to the advent of tomato brown rugose fruit virus, which overcomes tomato resistance against TMV and ToMV, and the slow but apparently inexorable worldwide spread of cucumber green mottle mosaic virus, which threatens all cucurbit crops. This review discusses a range of mainly molecular biology-based approaches for protecting crops against tobamoviruses. These include cross-protection (using mild tobamovirus strains to ‘immunize’ plants against severe strains), expressing viral gene products in transgenic plants to inhibit the viral infection cycle, inducing RNA silencing against tobamoviruses by expressing virus-derived RNA sequences in planta or by direct application of double-stranded RNA molecules to non-engineered plants, gene editing of host susceptibility factors, and the transfer and optimization of natural resistance genes. Full article
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14 pages, 1404 KiB  
Communication
Developing a Multi-Spectral NIR LED-Based Instrument for the Detection of Pesticide Residues Containing Chlorpyrifos-Methyl in Rough, Brown, and Milled Rice
by Fatima Rodriguez-Macadaeg, Paul R. Armstrong, Elizabeth B. Maghirang, Erin D. Scully, Daniel L. Brabec, Frank H. Arthur, Arlene D. Adviento-Borbe, Kevin F. Yaptenco and Delfin C. Suministrado
Sensors 2024, 24(13), 4055; https://doi.org/10.3390/s24134055 - 21 Jun 2024
Viewed by 187
Abstract
A recent study showed the potential of the DA Perten 7200 NIR Spectrometer in detecting chlorpyrifos-methyl pesticide residue in rough, brown, and milled rice. However, this instrument is still lab-based and generally suited for point-of-sale testing. To provide a field-deployable version of this [...] Read more.
A recent study showed the potential of the DA Perten 7200 NIR Spectrometer in detecting chlorpyrifos-methyl pesticide residue in rough, brown, and milled rice. However, this instrument is still lab-based and generally suited for point-of-sale testing. To provide a field-deployable version of this technique, an existing light emitting diode (LED)-based instrument that provides discrete NIR wavelength illumination and reflectance spectra over the range of 850–1550 nm was tested. Spectra were collected from rough, brown, and milled rice at different pesticide concentrations and analyzed for quantitative and qualitative measurement using partial least squares regression (PLS) and discriminant analysis (DA). Simulations for two LED-based instruments were also evaluated using corresponding segments of spectra from the DA7200 to represent LED illumination. For the simulation of the existing LED-based instrument (LEDPrototype1) fitted with 850, 910, 940, 970, 1070, 1200, 1300, 1450, and 1550 nm LED wavelengths, resulting R2 ranged from 0.52 to 0.71, and the correct classification was 70.4% to 100%. The simulation of a second LED instrument (LEDPrototype2) fitted with 980, 1050, 1200, 1300, 1450, 1550, 1600, and 1650 nm LED wavelengths showed R2 of 0.59 to 0.82 and correct classifications of 66% to 100%. These LED wavelengths were selected based on the significant wavelength regions from the PLS regression coefficients of DA7200 and the commercial availability of LED wavelengths. Results showed that it is possible to use a multi-spectral LED-based instrument to detect varying levels of chlorpyrifos-methyl pesticide residue in rough, brown, and milled rice. Full article
(This article belongs to the Section Smart Agriculture)
11 pages, 429 KiB  
Article
Comparative Evaluation of the Sensory Qualities of Refined and Wholegrain Rice as Ingredients within Mixed Dishes
by Andreia Da Graça, Foyeke Teinye-Boyle and Iain A. Brownlee
Nutrients 2024, 16(13), 1984; https://doi.org/10.3390/nu16131984 - 21 Jun 2024
Viewed by 246
Abstract
Low wholegrain food consumption is a leading dietary risk for avoidable morbidity and mortality globally, with limited sensory acceptability suggested to be a challenge for changing behaviour. This study aimed to evaluate the sensory acceptability of both wholegrain (brown) and refined (white) rice [...] Read more.
Low wholegrain food consumption is a leading dietary risk for avoidable morbidity and mortality globally, with limited sensory acceptability suggested to be a challenge for changing behaviour. This study aimed to evaluate the sensory acceptability of both wholegrain (brown) and refined (white) rice in common preparations. Four brown- and white-rice-containing dishes (Garlic Rice, Rice and Beans, Jollof Rice, and Rice Pudding) were tested. Quantitative (five-point scales) and qualitative (open question responses) sensory information were collected for dish appearance, aroma, taste, and texture. All four characteristics were scored equally acceptable in Rice and Beans and Rice Pudding (p > 0.05) between paired comparisons for brown and white rice. Scores were significantly lower for all characteristics for Jollof Rice (p ≤ 0.002), and lower for Aroma (median (lower quartile–upper quartile)) for brown (3.5 (3–4)) vs. white rice (4 (4–5)), p = 0.006). Appearance (brown (3 (3–4)) vs. white rice (4 (3.25–5)), p = 0.012), and Texture (brown 3 (2.25–4) vs. white rice (4 (4–5)), p < 0.001) for Garlic Rice. Familiarity and appealingness were qualitative themes aligned with the higher acceptability of white-rice-containing dishes. Certain dishes appear to mask key negative sensory attributes of wholegrain foods, possibly representing a means to increase wholegrain ingredient acceptability, thereby potentially improving individual/population-level intake. Full article
26 pages, 2860 KiB  
Article
Unraveling the Physicochemical, Nutritional and Antioxidant Properties of the Honey Produced from the Fallopia japonica Plant
by Alexandra-Antonia Cucu, Otilia Bobiș, Victorița Bonta, Adela Ramona Moise, Claudia Pașca, Mihaiela Cornea-Cipcigan, Rodica Mărgăoan, Ștefan Dezsi, Sara Botezan, Ecaterina-Daniela Baciu, Alexandru-Ioan Giurgiu, Anamaria Mălinaș and Daniel Severus Dezmirean
Foods 2024, 13(13), 1959; https://doi.org/10.3390/foods13131959 - 21 Jun 2024
Viewed by 246
Abstract
Fallopia japonica (FJ), commonly known as Japanese knotweed, is now recognized as one of the most invasive plants in Europe and globally. Despite its widespread presence in Europe and its significant nectar production, there is currently limited scientific data on the unique unifloral [...] Read more.
Fallopia japonica (FJ), commonly known as Japanese knotweed, is now recognized as one of the most invasive plants in Europe and globally. Despite its widespread presence in Europe and its significant nectar production, there is currently limited scientific data on the unique unifloral honey derived from it. This study examines the physicochemical composition of Fallopia japonica honey (FJH) samples collected from various regions in Romania. Additionally, the nutritional and antioxidant profiles of FJH were assessed. The sensory analysis revealed a honey with a brown-caramel color and an intense flavor, characterized by fine, consistent crystals during crystallization. The results indicated that FJH has a high carbohydrate content (fructose: 35.12–40.65 g/100 g; glucose: 28.06–37.79 g/100 g); elevated electrical conductivity (387–692 µS/cm), diastase activity (9.11–17.01 DN), and acidity (21.61–42.89 meq/kg); and substantial total phenolic (89.87–120.08 mg/100 g) and flavonoid (18.13–39.38 mg/g) contents. These findings highlight FJH’s favorable nutritional properties, aligning with the standard codex for honey. The antioxidant profile of FJH demonstrated strong DPPH and ferric reduction antioxidant power (FRAP) activities, comparable to those of buckwheat honey, underscoring its potential health benefits and commercial value. These results provide new insights into how this invasive plant can be harnessed as a valuable resource for sustainable beekeeping practices. Full article
(This article belongs to the Special Issue Recent Advances and Opportunities of Honey & Bee Products)
20 pages, 23344 KiB  
Article
Isolation and Characterization of Native Isolates of Metarhizium sp. as a Biocontrol Agent of Hypothenemus hampei in Rodríguez de Mendoza Province—Peru
by Manuel Oliva-Cruz, Miguel A. Altamirano-Tantalean, Reyna Chuquizuta-Torres, Carlos Oliva-Cruz, Jorge L. Maicelo-Quintana, Santo T. Leiva-Espinoza, Lorenzo Culqui, Lizette Daniana Mendez-Fasabi, Heidel Marcelo Rojas Ventura, Mike Anderson Corazon-Guivin and Lily Juarez-Contreras
Agronomy 2024, 14(7), 1341; https://doi.org/10.3390/agronomy14071341 - 21 Jun 2024
Viewed by 250
Abstract
Entomopathogenic fungi represent the pinnacle of efficacy among biological control agents when combating insect pests within natural ecosystems, combating them without altering the environment. This study aimed to isolate and characterize the morphology, physiology, and pathogenicity of native isolates of Metarhizium sp. isolated [...] Read more.
Entomopathogenic fungi represent the pinnacle of efficacy among biological control agents when combating insect pests within natural ecosystems, combating them without altering the environment. This study aimed to isolate and characterize the morphology, physiology, and pathogenicity of native isolates of Metarhizium sp. isolated from soil samples from the province of Rodriguez de Mendoza. Eighteen native isolates of Metarhizium sp. were isolated and characterized. Colony coloration varied between yellow-gray, white, brown, and olive, with feathery or wavy edges. As for radial growth, the highest averages were obtained by isolates LLM-M2 and TOR-M16, with 43.15 mm and 42.85 mm, respectively. Conidia production at 15 days was higher for isolate LLM-M2 with 9.8 × 107 conidia/mL; in the percentage of germination at 14 h, the treatment that reached 100% germination was TOR-M16. Isolate CMR-M7 reached 97.49% mycelial growth percentage at 288 h, being the best result; in the percentage of mortality in CBB adults, the treatments that reached 100% were TOR-M9, TOR-M16, and MNR-M1. In general, the results demonstrate the entomopathogenic potential of native isolates of Metarhizium sp. acting as biocontrol agents of Hypothenemus hampei, being a low-cost, easily accessible, and environmentally friendly alternative. Full article
(This article belongs to the Section Pest and Disease Management)
21 pages, 3845 KiB  
Article
Effects of Freeze–Thaw Pretreatment Combined with Hot Air on Snake Gourd (Trichosanthes anguina L.)
by Dandan Gu, Xiao Li, Mingyue Dong, Wenxuan Ji, Zihao Yan, Ting Zhao, Min Zhang, Peng Liu, Panpan Yue, Guanghua Mao and Liuqing Yang
Foods 2024, 13(13), 1961; https://doi.org/10.3390/foods13131961 - 21 Jun 2024
Viewed by 409
Abstract
Snake gourd is a seasonal vegetable with a high water content and medicinal value, but the short harvest period limits the large-scale application of snake gourd. Therefore, the effects of freeze–thaw pretreatment (FT) combined with hot air (HD) on the drying characteristics, active [...] Read more.
Snake gourd is a seasonal vegetable with a high water content and medicinal value, but the short harvest period limits the large-scale application of snake gourd. Therefore, the effects of freeze–thaw pretreatment (FT) combined with hot air (HD) on the drying characteristics, active ingredients and bioactivities of snake gourd were investigated. The results showed that FT pretreatment reduced browning and shortened the drying time by 44%; the Page model was the best fit for describing the drying process. The polysaccharide contents (21.70% in alcoholic extract (TG1) and 44.34% in water extract (TG2)) and total phenol contents (1.81% in TG1 and 0.88% in TG2) of snake gourd pretreated by FT-HD were higher than those of snake gourd pretreated by the corresponding HD treatment. The FT pretreatment decreased the molecular weight of snake gourd polysaccharides and increased the molar ratio of glucose. The extracts pretreated by FT-HD showed greater chemical, cellular antioxidant capacity and α-amylase and α-glucosidase inhibition than those pretreated by HD. FT-HD can be recommended for achieving a short drying time and high quality of snake gourd and can be used for the drying of other fruits and vegetables. Full article
(This article belongs to the Section Food Engineering and Technology)
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17 pages, 10425 KiB  
Article
The Hidden Connections of Urban Crime: A Network Analysis of Victims, Crime Types, and Locations in Rio de Janeiro
by Fernanda C. Ventorim and Vinicius M. Netto
Urban Sci. 2024, 8(2), 72; https://doi.org/10.3390/urbansci8020072 - 20 Jun 2024
Viewed by 292
Abstract
Urban crime is a pressing issue in socially unequal regions like Brazil. We investigate the complex relationships between crime, victims, and urban situations in Rio de Janeiro. We analyze the connections between specific types of crime, victim characteristics, and crime locations through complex [...] Read more.
Urban crime is a pressing issue in socially unequal regions like Brazil. We investigate the complex relationships between crime, victims, and urban situations in Rio de Janeiro. We analyze the connections between specific types of crime, victim characteristics, and crime locations through complex network analysis. In a large-scale empirical study, we examine 5000 randomly selected crime incidents in Rio between 2007 and 2018. Our analysis reveals a strong association between sex, race, location, and income inequality in the risk of exposure to crime. The results suggest that specific social groups, notably black and brown women, face a higher-than-average vulnerability to particular types of crime in Rio. Our investigation confirms our hypothesis that crime incidents are not random occurrences. Instead, we have discovered meaningful connections between specific types of crime, victim characteristics, and crime locations. These findings indicate a pattern of underlying factors shaping the distribution of crime and vulnerable social groups. Full article
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16 pages, 3882 KiB  
Article
Highly Accurate and Lightweight Detection Model of Apple Leaf Diseases Based on YOLO
by Zhaokai Sun, Zemin Feng and Ziming Chen
Agronomy 2024, 14(6), 1331; https://doi.org/10.3390/agronomy14061331 - 19 Jun 2024
Viewed by 277
Abstract
To mitigate problems concerning small-sized spots on apple leaves and the difficulties associated with the accurate detection of spot targets exacerbated by the complex backgrounds of orchards, this research used alternaria leaf spots, rust, brown spots, gray spots, and frog eye leaf spots [...] Read more.
To mitigate problems concerning small-sized spots on apple leaves and the difficulties associated with the accurate detection of spot targets exacerbated by the complex backgrounds of orchards, this research used alternaria leaf spots, rust, brown spots, gray spots, and frog eye leaf spots on apple leaves as the research object and proposed the use of a high-accuracy detection model YOLOv5-Res (YOLOv5-Resblock) and lightweight detection model YOLOv5-Res4 (YOLOv5-Resblock-C4). Firstly, a multiscale feature extraction module, ResBlock (residual block), was designed by combining the Inception multi-branch structure and ResNet residual idea. Secondly, a lightweight feature fusion module C4 (CSP Bottleneck with four convolutions) was designed to reduce the number of model parameters while improving the detection ability of small targets. Finally, a parameter-streamlining strategy based on an optimized model architecture was proposed. The experimental results show that the performance of the YOLOv5-Res model and YOLOv5-Res4 model is significantly improved, with the mAP0.5 values increasing by 2.8% and 2.2% compared to the YOLOv5s model and YOLOv5n model, respectively. The sizes of the YOLOv5-Res model and YOLOv5-Res4 model are only 10.8 MB and 2.4 MB, and the model parameter counts are reduced by 22% and 38.3% compared to the YOLOv5s model and YOLOv5n model. Full article
(This article belongs to the Section Precision and Digital Agriculture)
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15 pages, 2425 KiB  
Article
A Network of Circular RNA and MicroRNA Sequencing Provides Insights into Pigment Deposition of Changshun Blue Eggshell Chickens
by Siyu Chen, Mengqiao Zhao, Kecheng Chen, Jiaming Xu and Hua Li
Genes 2024, 15(6), 812; https://doi.org/10.3390/genes15060812 (registering DOI) - 19 Jun 2024
Viewed by 195
Abstract
Eggshell color plays important biological roles and attracts the attention of both egg retailers and researchers. However, whether non-coding RNAs are involved in pigment deposition among different eggshell colors remains unknown. In this study, RNA sequencing was used to analyse the uterine gland [...] Read more.
Eggshell color plays important biological roles and attracts the attention of both egg retailers and researchers. However, whether non-coding RNAs are involved in pigment deposition among different eggshell colors remains unknown. In this study, RNA sequencing was used to analyse the uterine gland transcriptome (CircRNA and miRNA) of Changshun chicken blue-shell hens producing four different eggshell color eggs including dark blue PK(DB) and light blue (LB), dark brown and greenish (between blue and pink, DP) and pink (p). We found that miR-192-x, targeting SLC16a7, was expressed in DB, DP, and LB groups compared with the PK group, which indicates that miR-192-x may play a role in the blue eggshell color. KEGG and GO analyses showed that the “metabolic pathways” with targeted genes such BLVRA and HMOX1 were detected in dark and light blue color eggshell chickens, which confirms the different ratios of biliverdin and HO-1 involved in the deposition of blue color. As annotated by connectivity analysis, RASGRF1 and RASGRF2, belonging to the RASGRF family, are involved in the Ras signaling pathway, which plays an important role in cell growth, differentiation, metastasis and apoptosis. Our findings enrich the database of circRNA, miRNAs and genes for chicken uterine tissue, which will be useful in accelerating molecular selection for blue eggshell color layers. Full article
(This article belongs to the Special Issue Poultry Breeding and Genetics)
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15 pages, 7829 KiB  
Article
A Review of Miroculis (Ommaethus) Savage and Peters, 1983 (Ephemeroptera: Leptophlebiidae)
by Frederico Falcão Salles, Gabriel Martins Pantoja, Isabel Cristina Hernandez Cortes and Thales Orlando
Taxonomy 2024, 4(2), 432-446; https://doi.org/10.3390/taxonomy4020021 - 19 Jun 2024
Viewed by 218
Abstract
Miroculis (Ommaethus) Savage and Peters, 1983 (Ephemeroptera, Leptophlebiidae) is reviewed based on fresh material from Southeastern Brazil and on type specimens. Miroculis (Ommaethus) cipoensis sp. n. is described based on male and female imagos from Serra do Cipó, Minas Gerais State, Brazil. It [...] Read more.
Miroculis (Ommaethus) Savage and Peters, 1983 (Ephemeroptera, Leptophlebiidae) is reviewed based on fresh material from Southeastern Brazil and on type specimens. Miroculis (Ommaethus) cipoensis sp. n. is described based on male and female imagos from Serra do Cipó, Minas Gerais State, Brazil. It can be distinguished from other species of the subgenus based on the following characteristics: forewings with membrane brown and dark brown mark around cross veins; hind wing uniformly brown; forceps segment I light brown, segment II and III lighter; penis lobe long (at least ⅔ of forceps segment I) and apically rounded and curved on apical ¼; length of body between 5.0 and 6.3 mm. Photographs of fresh material belonging to M. (O.) froehlichi Savage and Peters, 1983 and M. (O.) mourei Savage and Peters, 1983 are provided, clarifying the boundaries between the existing species of the subgenus. Based on that, M. (O.) misionensis Domínguez, 2007 is considered a junior synonym of M. (O.) mourei. A key to the male imagos of the subgenus is presented, as well as a distributional map with updated records of the species. Full article
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12 pages, 203 KiB  
Article
Beyond Fistfights and Basketball: Reclaiming Native American Masculinity
by Dianne Baumann
Humans 2024, 4(2), 200-211; https://doi.org/10.3390/humans4020012 - 19 Jun 2024
Viewed by 194
Abstract
Substantial and necessary research examining the violence perpetrated against Native women continues to flourish, while violence and masculinity studies focused on Native men draws little attention. Meanwhile the murder rate of Native men is three times higher than Native women, twice as high [...] Read more.
Substantial and necessary research examining the violence perpetrated against Native women continues to flourish, while violence and masculinity studies focused on Native men draws little attention. Meanwhile the murder rate of Native men is three times higher than Native women, twice as high as white men, and occurs at the hands of police more often than any other U.S. racialized group per capita. Colonization divided ‘Christians’ (white) and ‘heathens’ (Native), with settler whites identifying Native men as wild and threatening. I suggest the construct of settler colonialism and the ‘toxic gendering’ of Native masculinity continues today and impacts Native men internally (psychologically) and externally (rationally), contributing to violence perpetrated against and by them. This paper is an interpretive analysis of “Scary Brown Man” and Reservation Blues as examined through the intersection of the toxic gendering bias intrinsic to settler colonialism. Alexie’s novel offers a depiction of ‘typical’ reservation life and the conflicting struggle to maintain a healthy Native identity, while Ross’s article brings real-life situations into the conversation, encouraging the entry of intersectional discourse around Native masculinity into the arena of gender/bias research as applied to settler colonial studies while questioning the role of identity politics within disciplines. Full article
20 pages, 2397 KiB  
Review
Adipocyte Mitochondria: Deciphering Energetic Functions across Fat Depots in Obesity and Type 2 Diabetes
by Snehasis Das, Alpana Mukhuty, Gregory P. Mullen and Michael C. Rudolph
Int. J. Mol. Sci. 2024, 25(12), 6681; https://doi.org/10.3390/ijms25126681 - 18 Jun 2024
Viewed by 432
Abstract
Adipose tissue, a central player in energy balance, exhibits significant metabolic flexibility that is often compromised in obesity and type 2 diabetes (T2D). Mitochondrial dysfunction within adipocytes leads to inefficient lipid handling and increased oxidative stress, which together promote systemic metabolic disruptions central [...] Read more.
Adipose tissue, a central player in energy balance, exhibits significant metabolic flexibility that is often compromised in obesity and type 2 diabetes (T2D). Mitochondrial dysfunction within adipocytes leads to inefficient lipid handling and increased oxidative stress, which together promote systemic metabolic disruptions central to obesity and its complications. This review explores the pivotal role that mitochondria play in altering the metabolic functions of the primary adipocyte types, white, brown, and beige, within the context of obesity and T2D. Specifically, in white adipocytes, these dysfunctions contribute to impaired lipid processing and an increased burden of oxidative stress, worsening metabolic disturbances. Conversely, compromised mitochondrial function undermines their thermogenic capabilities, reducing the capacity for optimal energy expenditure in brown adipocytes. Beige adipocytes uniquely combine the functional properties of white and brown adipocytes, maintaining morphological similarities to white adipocytes while possessing the capability to transform into mitochondria-rich, energy-burning cells under appropriate stimuli. Each type of adipocyte displays unique metabolic characteristics, governed by the mitochondrial dynamics specific to each cell type. These distinct mitochondrial metabolic phenotypes are regulated by specialized networks comprising transcription factors, co-activators, and enzymes, which together ensure the precise control of cellular energy processes. Strong evidence has shown impaired adipocyte mitochondrial metabolism and faulty upstream regulators in a causal relationship with obesity-induced T2D. Targeted interventions aimed at improving mitochondrial function in adipocytes offer a promising therapeutic avenue for enhancing systemic macronutrient oxidation, thereby potentially mitigating obesity. Advances in understanding mitochondrial function within adipocytes underscore a pivotal shift in approach to combating obesity and associated comorbidities. Reigniting the burning of calories in adipose tissues, and other important metabolic organs such as the muscle and liver, is crucial given the extensive role of adipose tissue in energy storage and release. Full article
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