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1.
Cureus ; 16(5): e60014, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38854232

RESUMEN

Kounis syndrome is defined as the concurrence of acute coronary syndrome and a condition related to mast cell activation, including anaphylaxis and anaphylactoid. A 58-year-old male hemodialysis patient underwent enhanced computed tomography (CT) using the radiocontrast medium, iopamidol for investigation of a kidney tumor. Two minutes after the administration of iopamidol, he developed respiratory symptoms and chest pain. Five minutes after that, disturbed consciousness and low blood pressure were observed. On the other hand, he did not demonstrate urticaria and swelling of the skin. A 12-lead electrocardiogram (ECG) and echocardiogram suggested the presence of cardiac ischemia. Therefore, he was diagnosed with Kounis syndrome caused by radiocontrast media. Eighteen minutes after this, he received an intramuscular injection of adrenaline (0.3 mg), and his vital signs stabilized and his ECG, echocardiogram, and symptoms improved. Without undergoing emergency coronary angiography (CAG), he was hospitalized and closely monitored. The next day, his symptoms had not worsened, and he underwent hemodialysis at his local hospital. The allergen radiocontrast media could be injurious and not sufficiently excreted if administrated for patients on weekly hemodialysis with radiocontrast medium-induced Kounis syndrome manifesting; hence, indication for emergency CAG in radiocontrast medium-induced Kounis syndrome should be cautiously evaluated by close observation.

2.
Plant J ; 2024 Apr 13.
Artículo en Inglés | MEDLINE | ID: mdl-38613775

RESUMEN

Phytohormones are essential signaling molecules regulating various processes in growth, development, and stress responses. Genetic and molecular studies, especially using Arabidopsis thaliana (Arabidopsis), have discovered many important players involved in hormone perception, signal transduction, transport, and metabolism. Phytohormone signaling pathways are extensively interconnected with other endogenous and environmental stimuli. However, our knowledge of the huge and complex molecular network governed by a hormone remains limited. Here we report a global overview of downstream events of an abscisic acid (ABA) receptor, REGULATORY COMPONENTS OF ABA RECEPTOR (RCAR) 6 (also known as PYRABACTIN RESISTANCE 1 [PYR1]-LIKE [PYL] 12), by integrating phosphoproteomic, proteomic and metabolite profiles. Our data suggest that the RCAR6 overexpression constitutively decreases the protein levels of its coreceptors, namely clade A protein phosphatases of type 2C, and activates sucrose non-fermenting-1 (SNF1)-related protein kinase 1 (SnRK1) and SnRK2, the central regulators of energy and ABA signaling pathways. Furthermore, several enzymes in sugar metabolism were differentially phosphorylated and expressed in the RCAR6 line, and the metabolite profile revealed altered accumulations of several organic acids and amino acids. These results indicate that energy- and water-saving mechanisms mediated by the SnRK1 and SnRK2 kinases, respectively, are under the control of the ABA receptor-coreceptor complexes.

3.
Int J Pediatr Otorhinolaryngol ; 178: 111904, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38432029

RESUMEN

OBJECTIVE: The purpose of this study is to compare patient trends in otitis media with effusion (OME) symptoms and diagnoses before and after the COVID-19 pandemic in order to investigate the effects of the coronavirus disease of 2019 (COVID-19). METHODS: A retrospective, multi-center, observational study was carried out between January 2018 and December 2022 at hospitals in the Iwate Prefecture with full-time doctors. All patients were initially separated into two groups, one for the pre-COVID-19 era (from January 2018 to June 2020), and the other for the COVID-19 era (from July 2020 to December 2022). RESULTS: In the pre-COVID-19 era, 132 patients had tympanostomy tubes (TT) placed, while 64 patients had them placed in the COVID-19 era. Between the pre-COVID-19 and COVID-19 eras, there were no statistically significant differences in terms of age, sex, side, craniofacial deformity, or adenoidectomy. Children in elementary school showed a greater decline than those in preschool (42-11 patients in elementary school (74%) and 49 to 32 patients in preschool school (35%); p = 0.025). CONCLUSIONS: The percentage of TT placements for OME dropped to roughly half during the COVID-19 epidemic. This was particularly obvious in elementary school students.


Asunto(s)
COVID-19 , Otitis Media con Derrame , Niño , Preescolar , Humanos , Japón/epidemiología , Ventilación del Oído Medio , Otitis Media con Derrame/epidemiología , Otitis Media con Derrame/cirugía , Pandemias , Estudios Retrospectivos , Masculino , Femenino
4.
Org Lett ; 26(9): 1931-1935, 2024 Mar 08.
Artículo en Inglés | MEDLINE | ID: mdl-38415634

RESUMEN

In phosphorus tetraazaporphyrins (PTAPs), the Q- and charge-transfer (CT) bands appear as a result of configuration interaction between their excited states. On the basis of this concept, a PTAP with an intense, broad CT band in the near-IR region has been rationally designed and realized by introducing eight diphenylaminophenyl (dPAP) groups. The order of the CT and Q-bands in ascending energy was supported by magnetic circular dichroism (MCD) spectroscopy and theoretical calculations. An intense two-photon absorption was also found in the deep near-IR region.

5.
PLoS One ; 19(2): e0292428, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38381736

RESUMEN

PURPOSE: This study aimed to elucidate characteristics of explosive force-production capabilities represented by multi-phase rate of force developments (IRFDs) during isometric single-leg press (ISLP) through investigating relationships with countermovement (CMJ) and rebound continuous jump (RJ) performances. METHODS: Two-hundred-and-thirty male athletes performed ISLP, CMJ with an arm swing (CMJAS), and RJ with an arm swing (RJAS). IRFDs were measured during ISLP using a custom-built dynamometer, while CMJAS and RJAS were measured on force platforms. The IRFDs were obtained as rates of increase in force across 50 ms in the interval from the onset to 250 ms. Jump height (JH) was obtained from CMJAS, while RJAS provided JH, contact time (CT), and reactive strength index (RSI) values. RESULTS: All IRFDs were correlated with CMJAS-JH (ρ = 0.20-0.45, p ≤ 0.003), RJAS-JH (ρ = 0.22-0.46, p ≤ 0.001), RJAS-RSI (ρ = 0.29-0.48, p < 0.001) and RJAS-CT (ρ = -0.29 to -0.25, p ≤ 0.025). When an influence of peak force was considered using partial rank correlation analysis, IRFDs during onset to 150 ms were correlated with CMJAS-JH (ρxy/z = 0.19-0.36, p ≤ 0.004), IRFDs during onset to 100 ms were correlated with RJAS-JH and RJAS-RSI (ρxy/z = 0.33-0.36, p < 0.001), and IRFD during onset to 50 ms was only correlated with RJAS-CT (ρxy/z = -0.23, p < 0.001). CONCLUSION: The early phase (onset to 150 ms) IRFDs measured using ISLP enabled the assessment of multiple aspects of leg-extension strength characteristics that differ from maximal strength; these insights might be useful in the assessment of the athletes' leg-extension strength capabilities.


Asunto(s)
Rendimiento Atlético , Pierna , Humanos , Masculino , Fuerza Muscular , Levantamiento de Peso , Atletas
6.
Artículo en Inglés | MEDLINE | ID: mdl-36790387

RESUMEN

Left upper lobectomy (LUL) with left superior pulmonary vein (LSPV) resection alters the left atrium (LA) physiological states and LA hemodynamics associated with thrombosis, although this underlying mechanism is poorly understood. Therefore, we investigated the effects of LSPV resection and associated LA physiological changes on LA hemodynamics using four-dimensional computed tomography image-based computational simulations. Three cases were considered: the LA before and after LUL extracted from computed tomography images and artificial LSPV resection without physiological changes. Comparisons among the three cases demonstrated that physiological changes associated with LSPV resection are the possible factors that affect the LA hemodynamics after LUL.


Asunto(s)
Venas Pulmonares , Venas Pulmonares/diagnóstico por imagen , Venas Pulmonares/cirugía , Venas Pulmonares/fisiología , Atrios Cardíacos/diagnóstico por imagen , Atrios Cardíacos/cirugía , Tomografía Computarizada por Rayos X/métodos , Hemodinámica
7.
J Sports Med Phys Fitness ; 64(3): 248-254, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37955933

RESUMEN

BACKGROUND: Rebound jump (RJ) is an exercise that is as short contact time and high as possible and is used to improve lower limb stretch-shortening cycle movements. This study examined the effects of RJ performance and lower limb joint kinetics when weight was incrementally added using a weighted vest. METHODS: Eleven male athletes (mean±standard deviation: age, 21.9±1.6 years; height, 176.3±5.5 cm; weight, 67.8±4.2 kg) performed RJ at 0% (no load), 5%, 9%, 12%, 15%, 18%, and 21% added weight. Body coordinates and ground reaction force were measured, and RJ index (jump height / contact time) and joint kinetics (joint torque, power, and work) were calculated. RESULTS: One-way Analysis of Variance showed that the RJ was significantly reduced starting from 12% (P<0.01), the jump height was significantly decreased starting from 12% (P<0.01), and the contact time was significantly increased only at 21% (P<0.01) compared with 0%. The negative peak power of the ankle joint decreased by 21% of the added weight (P<0.01). The main effects of body weight on the peak torque at the knee and hip joints and the positive peak power at the knee joint were observed. CONCLUSIONS: RJ with increasing weight tended to decrease jump height first, rather than longer contact time. However, it was suggested that there is an appropriate range of added weights that can be trained without decreasing the RJ index.


Asunto(s)
Articulación de la Cadera , Articulación de la Rodilla , Humanos , Masculino , Adulto Joven , Adulto , Fenómenos Biomecánicos , Extremidad Inferior , Articulación del Tobillo , Movimiento
8.
J Exp Bot ; 75(6): 1714-1725, 2024 Mar 14.
Artículo en Inglés | MEDLINE | ID: mdl-37712613

RESUMEN

Phytohormones are essential signalling molecules globally regulating many processes of plants, including their growth, development, and stress responses. The promotion of growth and the enhancement of stress resistance have to be balanced, especially under adverse conditions such as drought stress, because of limited resources. Plants cope with drought stress via various strategies, including the transcriptional regulation of stress-responsive genes and the adjustment of metabolism, and phytohormones play roles in these processes. Although abscisic acid (ABA) is an important signal under drought, less attention has been paid to other phytohormones. In this review, we summarize progress in the understanding of phytohormone-regulated primary metabolism under water-limited conditions, especially in Arabidopsis thaliana, and highlight recent findings concerning the amino acids associated with ABA metabolism and signalling. We also discuss how phytohormones function antagonistically and synergistically in order to balance growth and stress responses.


Asunto(s)
Proteínas de Arabidopsis , Arabidopsis , Reguladores del Crecimiento de las Plantas/metabolismo , Sequías , Ácido Abscísico/metabolismo , Arabidopsis/metabolismo , Proteínas de Arabidopsis/metabolismo , Regulación de la Expresión Génica de las Plantas , Estrés Fisiológico/genética
9.
Mol Metab ; 77: 101792, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37633515

RESUMEN

OBJECTIVE: To adapt to metabolically challenging environments, the central nervous system (CNS) orchestrates metabolism of peripheral organs including skeletal muscle. The organ-communication between the CNS and skeletal muscle has been investigated, yet our understanding of the neuronal pathway from the CNS to skeletal muscle is still limited. Neurons in the dorsomedial and central parts of the ventromedial hypothalamic nucleus (VMHdm/c) expressing steroidogenic factor-1 (VMHdm/cSF-1 neurons) are key for metabolic adaptations to exercise, including increased basal metabolic rate and skeletal muscle mass in mice. However, the mechanisms by which VMHdm/cSF-1 neurons regulate skeletal muscle function remain unclear. Here, we show that VMHdm/cSF-1 neurons increase the sympathoadrenal activity and regulate skeletal muscle peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC-1α) in mice via multiple downstream nodes. METHODS: Optogenetics was used to specifically manipulate VMHdm/cSF-1 neurons combined with genetically-engineered mice and surgical manipulation of the sympathoadrenal activity. RESULTS: Optogenetic activation of VMHdm/cSF-1 neurons dramatically elevates mRNA levels of skeletal muscle Pgc-1α, which regulates a spectrum of skeletal muscle function including protein synthesis and metabolism. Mechanistically, the sympathoadrenal drive coupled with ß2 adrenergic receptor (ß2AdR) is essential for VMHdm/cSF-1 neurons-mediated increases in skeletal muscle PGC1-α. Specifically, both adrenalectomy and ß2AdR knockout block augmented skeletal muscle PGC1-α by VMHdm/cSF-1 neuronal activation. Optogenetic functional mapping reveals that downstream nodes of VMHdm/cSF-1 neurons are functionally redundant to increase circulating epinephrine and skeletal muscle PGC1-α. CONCLUSIONS: Collectively, we propose that VMHdm/cSF-1 neurons-skeletal muscle pathway, VMHdm/cSF-1 neurons→multiple downstream nodes→the adrenal gland→skeletal muscle ß2AdR, underlies augmented skeletal muscle function for metabolic adaptations.


Asunto(s)
Condicionamiento Físico Animal , Ratones , Animales , Condicionamiento Físico Animal/fisiología , Neuronas/metabolismo , Transducción de Señal , Músculo Esquelético/metabolismo , Núcleo Hipotalámico Ventromedial
11.
iScience ; 26(5): 106695, 2023 May 19.
Artículo en Inglés | MEDLINE | ID: mdl-37207275

RESUMEN

Salivary gland cancers (SGCs) are heterogeneous tumors, and precision oncology represents a promising therapeutic approach; however, its impact on SGCs remains obscure. This study aimed to establish a translational model for testing molecular-targeted therapies by combining patient-derived organoids and genomic analyses of SGCs. We enrolled 29 patients, including 24 with SGCs and 5 with benign tumors. Resected tumors were subjected to organoid and monolayer cultures, as well as whole-exome sequencing. Organoid and monolayer cultures of SGCs were successfully established in 70.8% and 62.5% of cases, respectively. Organoids retained most histopathological and genetic profiles of their original tumors. In contrast, 40% of the monolayer-cultured cells did not harbor somatic mutations of their original tumors. The efficacy of molecular-targeted drugs tested on organoids depended on their oncogenic features. Organoids recapitulated the primary tumors and were useful for testing genotype-oriented molecular targeted therapy, which is valuable for precision medicine in patients with SGCs.

12.
Crit Care ; 27(1): 200, 2023 05 25.
Artículo en Inglés | MEDLINE | ID: mdl-37231510

RESUMEN

BACKGROUND: Circulatory failure is classified into four types of shock (obstructive, cardiogenic, distributive, and hypovolemic) that must be distinguished as each requires a different treatment. Point-of-care ultrasound (POCUS) is widely used in clinical practice for acute conditions, and several diagnostic protocols using POCUS for shock have been developed. This study aimed to evaluate the diagnostic accuracy of POCUS in identifying the etiology of shock. METHODS: We conducted a systematic literature search of MEDLINE, Cochrane Central Register of Controlled Trials, Embase, Web of Science, Clinicaltrial.gov, European Union Clinical Trials Register, WHO International Clinical Trials Registry Platform, and University Hospital Medical Information Network Clinical Trials Registry (UMIN-CTR) until June 15, 2022. We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and assessed study quality using the Quality Assessment of Diagnostic Accuracy Studies 2 tool. Meta-analysis was conducted to pool the diagnostic accuracy of POCUS for each type of shock. The study protocol was prospectively registered in UMIN-CTR (UMIN 000048025). RESULTS: Of the 1553 studies identified, 36 studies were full-text reviewed, and 12 studies with 1132 patients were included in the meta-analysis. Pooled sensitivity and specificity were 0.82 [95% confidence interval (CI) 0.68-0.91] and 0.98 [95% CI 0.92-0.99] for obstructive shock, 0.78 [95% CI 0.56-0.91] and 0.96 [95% CI 0.92-0.98] for cardiogenic shock, 0.90 [95% CI 0.84-0.94] and 0.92 [95% CI 0.88-0.95] for hypovolemic shock, and 0.79 [95% CI 0.71-0.85] and 0.96 [95% CI 0.91-0.98] for distributive shock, respectively. The area under the receiver operating characteristic curve for each type of shock was approximately 0.95. The positive likelihood ratios for each type of shock were all greater than 10, especially 40 [95% CI 11-105] for obstructive shock. The negative likelihood ratio for each type of shock was approximately 0.2. CONCLUSIONS: The identification of the etiology for each type of shock using POCUS was characterized by high sensitivity and positive likelihood ratios, especially for obstructive shock.


Asunto(s)
Sistemas de Atención de Punto , Choque , Humanos , Ultrasonografía/métodos , Pruebas en el Punto de Atención , Choque/diagnóstico por imagen , Sensibilidad y Especificidad
13.
J Biol Chem ; 299(7): 104848, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-37217003

RESUMEN

Skeletal muscle consists of both fast- and slow-twitch fibers. Phospholipids are important structural components of cellular membranes, and the diversity of their fatty acid composition affects membrane characteristics. Although some studies have shown that acyl chain species in phospholipids differ among various muscle fiber types, the mechanisms underlying these differences are unclear. To investigate this, we analyzed phosphatidylcholine (PC) and phosphatidylethanolamine (PE) molecules in the murine extensor digitorum longus (EDL; fast-twitch) and soleus (slow-twitch) muscles. In the EDL muscle, the vast majority (93.6%) of PC molecules was palmitate-containing PC (16:0-PC), whereas in the soleus muscle, in addition to 16:0-PC, 27.9% of PC molecules was stearate-containing PC (18:0-PC). Most palmitate and stearate were bound at the sn-1 position of 16:0- and 18:0-PC, respectively, and 18:0-PC was found in type I and IIa fibers. The amount of 18:0-PE was higher in the soleus than in the EDL muscle. Peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α) increased the amount of 18:0-PC in the EDL. Lysophosphatidylglycerol acyltransferase 1 (LPGAT1) was highly expressed in the soleus compared with that in the EDL muscle and was upregulated by PGC-1α. LPGAT1 knockout decreased the incorporation of stearate into PC and PE in vitro and ex vivo and the amount of 18:0-PC and 18:0-PE in murine skeletal muscle with an increase in the level of 16:0-PC and 16:0-PE. Moreover, knocking out LPGAT1 decreased the amount of stearate-containing phosphatidylserine (18:0-PS), suggesting that LPGAT1 regulated the acyl chain profiles of phospholipids, namely, PC, PE, and PS, in the skeletal muscle.


Asunto(s)
Fibras Musculares de Contracción Rápida , Músculo Esquelético , Fosfolípidos , Animales , Ratones , Fibras Musculares de Contracción Rápida/metabolismo , Fibras Musculares de Contracción Lenta/metabolismo , Músculo Esquelético/metabolismo , Fosfatidilcolinas/metabolismo , Fosfolípidos/química , Fosfolípidos/genética , Fosfolípidos/metabolismo , Estearatos/metabolismo , Plasmalógenos , Coactivador 1-alfa del Receptor Activado por Proliferadores de Peroxisomas gamma/metabolismo , Fibras Musculares Esqueléticas/metabolismo
14.
FEBS J ; 290(16): 3983-3996, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37021622

RESUMEN

Lipocalin-type prostaglandin D synthase (L-PGDS) is a secretory lipid-transporter protein that was shown to bind a wide variety of hydrophobic ligands in vitro. Exploiting this function, we previously examined the feasibility of using L-PGDS as a novel delivery vehicle for poorly water-soluble drugs. However, the mechanism by which human L-PGDS binds to poorly water-soluble drugs is unclear. In this study, we determined the solution structure of human L-PGDS and investigated the mechanism of L-PGDS binding to 6-nitro-7-sulfamoyl-benzo[f]quinoxalin-2,3-dione (NBQX), an α-amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid receptor antagonist. NMR experiments showed that human L-PGDS has an eight-stranded antiparallel ß-barrel structure that forms a central cavity, a short 310 -helix and two α-helices. Titration with NBQX was monitored using 1 H-15 N HSQC spectroscopy. At higher NBQX concentrations, some cross-peaks of the protein exhibited fast-exchanging shifts with a curvature, indicating at least two binding sites. These residues were located in the upper portion of the cavity. Singular value decomposition analysis revealed that human L-PGDS has two NBQX binding sites. Large chemical shift changes were observed in the H2-helix and A-, B-, C-, D-, H- and I-strands and H2-helix upon NBQX binding. Calorimetric experiments revealed that human L-PGDS binds two NBQX molecules with dissociation constants of 46.7 µm for primary binding and 185.0 µm for secondary binding. Molecular docking simulations indicated that these NBQX binding sites are located within the ß-barrel. These results provide new insights into the interaction between poorly water-soluble drugs and human L-PGDS as a drug carrier.


Asunto(s)
Lipocalinas , Agua , Humanos , Preparaciones Farmacéuticas , Simulación del Acoplamiento Molecular , Unión Proteica , Agua/química , Lipocalinas/química , Prostaglandina D2/metabolismo
15.
J Athl Train ; 58(11-12): 920-926, 2023 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-37071526

RESUMEN

CONTEXT: Individuals with chronic ankle instability (CAI) exhibit altered movement strategies during side-cutting tasks. However, no researchers have assessed how altered movement strategies affect cutting performance. OBJECTIVE: To investigate compensatory strategies in the side-hop test (SHT), with a focus on the entire lower extremity, among individuals with CAI. DESIGN: Cross-sectional study. SETTING: Laboratory. PATIENTS OR OTHER PARTICIPANTS: A total of 40 male soccer players comprising a CAI group (n = 20; age = 20.35 ± 1.15 years, height = 173.95 ± 6.07 cm, mass = 68.09 ± 6.73 kg) and a control group (n = 20; age = 20.45 ± 1.50 years, height = 172.39 ± 4.39 cm, mass = 67.16 ± 4.87 kg). INTERVENTION(S): Participants performed 3 successful SHT trials. MAIN OUTCOME MEASURE(S): We calculated SHT time, torque, and torque power in the ankle, knee, and hip joints during the SHT using motion-capture cameras and force plates. Confidence intervals for each group that did not overlap by >3 points consecutively in the time series data indicated a difference between groups. RESULTS: Compared with the control group, the CAI group showed (1) no delayed SHT time; (2) lower ankle-inversion torque (range = 0.11-0.13 N·m/kg) and higher hip-extension (range = 0.18-0.72 N·m/kg) and -abduction torque (0.26 N·m/kg); (3) less concentric power in ankle dorsiflexion-plantar flexion (0.18 W/kg) and inversion-eversion (0.40 W/kg), more concentric power in hip flexion-extension (0.73 W/kg), and more eccentric power in knee varus-valgus (0.27 W/kg). CONCLUSIONS: Individuals with CAI were likely to rely on hip-joint function to compensate for ankle instability and demonstrated no differences in SHT time compared with the control group. Therefore, the movement strategies of individuals with CAI could differ from those of individuals without CAI, even if SHT time is not different.


Asunto(s)
Traumatismos del Tobillo , Inestabilidad de la Articulación , Humanos , Masculino , Adulto Joven , Adulto , Adolescente , Tobillo , Estudios Transversales , Traumatismos del Tobillo/diagnóstico , Articulación del Tobillo , Extremidad Inferior , Inestabilidad de la Articulación/diagnóstico , Fenómenos Biomecánicos , Enfermedad Crónica
16.
Anal Sci ; 39(5): 729-737, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-36864238

RESUMEN

Zincon/Latex-NR3+ nanocomposite-loaded dye nanoparticle coated test strip (Zincon/Latex-NR3+ DNTS) was fabricated to detect Zn(II) in plating wastewater by a unique color change from red-purple to deep blue and evaluated its detection performance in actual plating samples. The 5 × 5 mm square-cut DNTS attached sticks were immersed into 10 mL aliquots of aqueous solutions containing Zn(II) ion and 0.01 M TAPS buffer at pH 8.4 with stirring at 250 rpm for 60 min. The calibration curve for Zn(II) was prepared based on the integrated area intensity of reflectance by TLC at 620 nm with the 3σ detection limit was 48.61 ppb, and the quantitative range was approximately up to 1000 ppb. Although Cu(II), Mn(II), Ni(II), and Co(II) showed competitive interference due to complex formation with Zincon, a mixture of masking reagent including thiourea, 2-aminoethanthiol, and o-phenanthroline was effective in removing the contamination. To eliminate Cr(III) interference based on the incorporation of Zn(II) into Cr(III) hydrolyzed polymer, adding KBrO3 and H2SO4 under boiling for several minutes was required. With appropriate pretreatment, all results of actual plating water samples by Zincon/LatexNR3+ DNTS were close to those of ICP-OES.

17.
Auris Nasus Larynx ; 50(6): 960-963, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36792400

RESUMEN

A 46-year-old man who had been diagnosed with eosinophilic otitis media (EOM) and eosinophilic chronic rhinosinusitis was referred to our department. He suffered from bilateral earache, clogged ear sensation, and otorrhea associated with EOM. He had been treated with a myringotomy and a ventilation tube (VT) insertion. However, his symptoms did not improve, and the VT repeatedly fell out. We performed canal wall down mastoidectomy via a retro-auricular incision to remove the presumed cholesterol granuloma (CG) and a long-term VT insertion. The VT fell out repeatedly. Therefore, a large VT that Komune devised was inserted. Four months after reinsertion, there was no evidence of recurrent otorrhea or fallout of a large VT. A large VT insertion could be useful in the severe case of EOM with CG.


Asunto(s)
Otitis Media con Derrame , Otitis Media , Masculino , Humanos , Persona de Mediana Edad , Otitis Media con Derrame/complicaciones , Otitis Media con Derrame/cirugía , Otitis Media/complicaciones , Granuloma/complicaciones , Granuloma/cirugía , Ventilación del Oído Medio , Colesterol
18.
Cureus ; 15(1): e33329, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36751215

RESUMEN

A 16-year-old female who had left auricular sinus infections was admitted to our hospital. On physical examination, bilateral sinus tract openings were noted at the cavum conchae. We used a surgical microscope to complete the total resection of the bilateral sinus at the cavum conchae. Also dissected was the cartilage from the cavum conchae. To our knowledge, surgical excision of cavum conchae sinuses has not been previously described.

19.
J Agric Food Chem ; 71(10): 4292-4297, 2023 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-36753603

RESUMEN

Diosgenin is an aglycone of dioscin, a major bioactive steroidal saponin found in plants, including Himalayan Paris (Paris polyphylla), fenugreek (Trigonella foenum-graecum), and yam (Dioscorea spp.). We have previously demonstrated that a species of natural yam, Dioscorea japonica, contains a promising bioactive compound diosgenin, which induces anti-carcinogenic and anti-hypertriacylglycerolemic activities. Here, we found for the first time that Japanese yam (D. japonica) bulbils are richer in diosgenin than the edible tubers (rhizomes) and leaves. LC-MS and imaging-MS analyses revealed that diosgenin accumulated in the peripheral region of D. japonica bulbils. Additionally, we performed RNA-seq analysis of D. japonica, and multiple sequence alignment identified D. japonica CYP90 (DjCYP90), the orthologous gene of CYP90G4 in P. polyphylla, CYP90B50 in T. foenum-graecum, CYP90G6 in Dioscorea zingiberensis, and CYP90G in Dioscorea villosa, which encodes a diosgenin biosynthetic rate-limiting enzyme. The expression levels of DjCYP90 were significantly upregulated in D. japonica bulbils than in its rhizomes and leaves. Since diosgenin is one of the most promising functional food factors executing several favorable bioactivities, D. japonica bulbils rich in diosgenin would be a beneficial natural resource.


Asunto(s)
Dioscorea , Diosgenina , Dioscorea/genética , Dioscorea/metabolismo , Distribución Tisular , Espectrometría de Masas , Expresión Génica
20.
J Strength Cond Res ; 37(5): 1017-1022, 2023 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-36730990

RESUMEN

ABSTRACT: Hayashi, R, Yoshida, T, and Kariyama, Y. Comparison of joint-level kinetics during single- and double-leg weightlifting derivatives. J Strength Cond Res 37(5): 1017-1022, 2023-Humans have different 3-dimensional biomechanical characteristics of the lower extremities during locomotion with one and both legs. These biomechanical characteristics may also be observed in the weightlifting derivatives. This study aimed to compare the 3-dimensional joint kinetics of the lower extremities during the single-leg hang power clean (SHPC) and double-leg hang power clean (DHPC). Ten male track and field athletes performed the SHPC and DHPC using external loads of 30, 60, and 90% of one repetition maximum (1RM). The 1RMs in SHPC and DHPC were measured separately, and the external loads at 30, 60, and 90% of the 1RM used were determined based on the different 1RMs in SHPC and DHPC. We calculated the joint moment and joint power of the SHPC and DHPC using a motion capture system and force platforms. The hip abduction moment and power of the SHPC were significantly greater than those of the DHPC under all external loads ( p < 0.05). In addition, ankle joint moment at all external loads and joint power at 90% of 1RM was greater for SHPC than for DHPC ( p < 0.05). Furthermore, although hip (extension-flexion) and ankle joint kinetics in SHPC and DHPC showed similar load dependence, hip abduction axis kinetics was not load dependent. These results suggest that the hip (abduction-adduction) and ankle joint kinetics in SHPC are greater than in DHPC, but hip (abduction-abduction) kinetics in SHPC is not load independent.


Asunto(s)
Articulación de la Rodilla , Pierna , Humanos , Masculino , Articulación de la Cadera , Fenómenos Biomecánicos , Extremidad Inferior
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