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SUMMARY: Our team has modified Sihler's intramuscular nerve staining method to allow for calculation of nerve density. Therefore, this study aimed to show the overall distribution pattern of the thoracic cutaneous nerves to provide a morphological basis for selecting and matching sensory reconstruction during skin flap transplantation. Twelve Chinese adult cadavers were dissected; the thoracic skin was removed, and the modified Sihler's staining method was performed. Centered around the nipple, the chest skin was divided into four regions: medial-superior, lateral-superior, lateral-inferior, and medial-inferior. The thoracic skin was not only innervated by the branches of the 1st to 7th intercostal and supraclavicular nerves, but also by a small number of nerves that directly reached the skin and passed through the pectoralis major muscle. There is a phenomenon of cross overlap between the branches of adjacent intercostal nerves. The branches of the 2nd to 7th intercostal nerves were distributed in the breast, and the branches of the lateral and anterior cutaneous branches were densely distributed around the nipple, forming a grid-like anastomosis. There was no cross-overlapping innervation between the anterior cutaneous branches on both sides. The density of nerve distribution in the four regions of the chest was in the order of the medial-superior, lateral-superior, lateral-inferior and medial-inferior region, respectively. These results may be used to map sensory regions when designing thoracic skin flaps for reconstruction surgery to obtain improved sensory recovery.
Nuestro equipo ha modificado el método de tinción nerviosa intramuscular de Sihler para permitir el cálculo de la densidad nerviosa. Por lo tanto, este estudio tuvo como objetivo mostrar el patrón de distribución general de los nervios cutáneos torácicos proporcionando una base morfológica para seleccionar y combinar la reconstrucción sensorial durante el trasplante de colgajo de piel. Se diseccionaron 12 cadáveres de individuos adultos chinos. Se eliminó la piel torácica y se realizó el método de tinción de Sihler modificado, centrada alrededor del pezón, la piel del pecho se dividió en cuatro regiones: medial- superior, lateral-superior, lateral-inferior y medial-inferior. La piel torácica no solo estaba inervada por los ramos de los nervios intercostal y supraclavicular 1º a 7º, sino también por un pequeño número de nervios que llegaban directamente a la piel y pasaban a través del músculo pectoral mayor. Existe un fenómeno de superposición cruzada entre los ramos de los nervios intercostales adyacentes. Los ramos de los nervios intercostales 2º a 7º se distribuyeron en la mama, y los ramos de los ramos cutáneos lateral y anterior se distribuyeron densamente alrededor del pezón, formando una anastomosis en forma de rejilla. No hubo inervación cruzada entre los ramos cutáneos anteriores en ambos lados. La densidad de la distribución nerviosa en las cuatro regiones del tórax estaba en el orden de región medial-superior, lateral-superior, lateral-inferior y medial-inferior, respectivamente. Estos resultados pueden ser útiles para mapear regiones sensoriales al diseñar colgajos de piel torácicos para utilizarlos en cirugía de reconstrucción y obtener así una mejor recuperación sensorial.
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Humans , Male , Female , Adult , Middle Aged , Aged , Skin/innervation , Staining and Labeling , Thorax/innervation , Surgical Flaps/innervation , Cadaver , Coloring AgentsABSTRACT
Objective To explore the context and hotspot changes of forensic mixed stain research through bibliometric approach.Methods The literature of forensic mixed stain included in the core col-lection of Web of Science database from 2011 to 2022 were collected as the study object,and the an-nual publication number,countrie(region),institution,journal,keywords,etc.were bibliometrically and visually analyzed using the R-based Bibliometrix 1.1.6 package and VOSviewer 1.6.18 software.Re-sults A total of 732 articles on forensic mixed stain were included from 2011 to 2022,with the an-nual number of articles published and the annual citation frequency showing a steady increase year by year.Among the 59 countries(regions)with the most published articles,the United States ranked first with 246 articles,followed by China with 153 articles.The literature came from 104 journals,and the total number of articles published in the top 10 journals was 633.FORENSIC SCI INT GENET ranked first with 307 articles.Visual analysis using VOSviewer software showed that keywords could be divided into four research clusters,namely the genetic marker development group(blue),the mixed stain typing analysis theory group(red),the sequencing analysis group(yellow),and the case sample research group(green).It can be divided into four development stages in terms of different time peri-ods:early development(2011-2013),middle development(2014-2016),rapid development(2017-2020)and latest development(2021-2022).Conclusion The number of publications by domestic and foreign scholars in the study of mixed stain in forensic science is showing a relatively stable trend.Machine learning,next generation sequencing and other research have been the hottest topics that have attracted the most attention in recent years,which is expected to further develop the theory of mixed stain typing and sequencing analysis in forensic mixed stain research.
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Objective:To observe the antidepressant effect of Tongdu Qishen electroacupuncture method; To explore its mechanism of regulating the oxidative stress pathway of protein kinase C (PKC)/reduced coenzymeⅡ (NADPH) in depression model rats.Methods:Totally 32 SD rats were divided into control group, model group, Tongdu Qishen electroacupuncture group and escitalopram group according to random number table method, with 8 rats in each group. The model of depression was established by chronic unpredictable stress except control group. After the start of modeling, Tongdu Qishen electroacupuncture group was treated with electroacupuncture every day, 15 min/time/day; escitalopram group was given 30 mg/kg intragastric intervention. 1 day before the start of the experiment and the 28th day of the experiment, the growth of body mass was observed, and sugar preference experiment and open field experiment were performed. The protein expression levels of protein kinase C α (PKC α), p47phox, t and RAS related C3 botulinum toxin substrate 1 (Rac1) in hypothalamus were detected by Western blot, and the positive area ratio of NOX2 protein in hypothalamus was detected by immunofluorescence technique; ROS content in hypothalamus was detected using DCFH-DA fluorescent probe technique.Results:Compared with the model group, the Tongdu Qishen electroacupuncture group and the escitalopram group showed the body mass growth ( P<0.01) and sugar preference index increased ( P<0.01), and the moving distance ( P<0.05) and residence time ( P<0.01) in the central area of the open field experiment were longer; the protein expression levels of hypothalamic PKC α, p47phox and Rac1 decreased ( P<0.05 or P<0.01), the positive area ratio of NOX2 protein decreased ( P<0.05), and the level of ROS also decreased significantly ( P<0.01) in Tongdu Qishen electroacupuncture group and escitalopram group. Conclusion:Tongdu Qishen electroacupuncture group can improve the behavior of depressed rats, inhibit the oxidative stress response of PKC/NADPH pathway, and reduce the production of ROS, thereby reducing the brain damage caused by oxidative stress, and improving the symptoms of depression.
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Objective:To evaluate the diagnostic value of rapid on-site evaluation (ROSE) performed by endoscopists for solid pancreatic lesions requiring tissue for immunohistochemistry (IHC) staining with different approach of endoscopic ultrasound-guided tissue acquisition (EUS-TA).Methods:After screening 1 573 cases who underwent EUS-TA operation at the Endoscopy Center of Peking Union Medical College Hospital between August 2018 and October 2022, a total of 65 cases of solid pancreatic lesions whose diagnosis rely on IHC staining was collected and summarized with clinical data of each case. Among 65 cases, there were 46 cases of pancreatic neuroendocrine tumors (PNETs), 13 cases of pancreatic solid pseudo-papillary tumors (SPTs), and 6 cases of lymphomas and mesenchymal. Patients were categorized into ROSE group (36 cases) and non-ROSE group (29 cases) according to the presence or absence of endoscopists performed ROSE during EUS-TA operation. They were further divided into subgroups of FNA-ROSE (26 cases), FNB-ROSE (10 cases), FNA-non-ROSE (24 cases) and FNB-non-ROSE (5 cases) according to the type of EUS-TA. Diagnostic accuracy and IHC success rate were compared between different groups and subgroups. Binomial logistic multifactorial regression analysis was used to evaluate the influence of ROSE and EUS-TA type on diagnostic accuracy and IHC success rate.Results:There were no statistically significant differences between ROSE group and non-ROSE group in terms of age, gender, bilirubin level, CA19-9 level, lesion site, lesion size, composition ratio of diagnosis, and surgical rate. The differences in mean size of lesions, needle gauge, location of puncturation, and number of needle pass between subgroups were not statistically significant. The diagnostic accuracy was 88.9% in ROSE group and 79.3% in non-ROSE group, and the difference between the two groups was statistically significant ( P=0.023). The diagnostic accuracy of FNA-ROSE group was higher than that of FNA-non-ROSE group (88.5% vs 75.0%), but the difference was not statistically significant ( P>0.100). The differences in diagnostic accuracy and success rate of IHC between FNB-ROSE group and FNB-non-ROSE group were not statistically significant. Binomial logistic multifactorial regression analysis did not reveal any independent influences on diagnostic accuracy. Conclusions:ROSE performed by endoscopists improved diagnostic accuracy of EUS-TA in solid pancreatic lesions requiring IHC staining, and therefore is potentially valuable for improving the diagnostic efficiency of EUS-TA for such diseases.
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AIM: To assess the gap between the peak of the base curve to the surface of the cornea, as well as examines the correlation between the thickness of the tear film and the fitting of the orthokeratology lens through optical coherence tomography(OCT), providing an intuitive and quantitative clinical evaluation method for the fitting of the orthokeratology lens.METHODS: Myopia patients who fitted orthokeratology at our hospital from January to December 2023 were included. Examinations, including naked vision, slit lamp, non-contact intraocular pressure, ocular fundus, eye position, corneal diameter, corneal topography, tear film rupture time, optometry, etc., were performed on all patients before fitting. The trial lens parameter was selected according to the examination results, and fluorescein staining was performed to evaluate lens fitting state after patients adapted to wearing glasses. According to the performance of fluorescein staining, the inspected eyes are divided into three groups: lens loose group, lens fitting group, and lens tight group. In addition, the tear film thickness of three groups of subjects was measured by OCT, and the differences between the three groups of data were evaluated.RESULTS: A total of 49 myopic patients(77 eyes)were included. The average sphere degree was -3.10±1.25 D, the average cylinder degree was -0.43(-0.75, 0)D, the average horizontal keratometry(HK)was 42.48±0.81 D, and vertical keratometry(VK)was 42.98(42.25, 43.50)D. There were 21 cases(34 eyes)in the lens fitting group, with 13 cases of bilateral eyes, 8 cases of one eye, 14 cases(22 eyes)in the lens loose group, with 8 cases of bilateral eyes, 6 cases of one eye, and 14 cases(21 eyes)in the lens tight group, with 7 cases of bilateral eyes, 7 cases of one eye. There was no statistical difference in the main basic data of the subjects in the three groups(all P>0.05). OCT showed that the tear film thickness of the lens fitting group, the lens loose group, and the lens tight group was 231.18(219.0, 243.0), 220.41(214.0, 224.3), and 249.00(241.5, 258.0)μm, respectively, and there was statistical significance in the thickness among the three groups(P<0.05).CONCLUSION: OCT can serve as a safe and reliable method for measuring the tear film thickness, which can help evaluate the suitability of orthokeratology and provide a non-invasive, more intuitive, and quantitative evaluation method for the fitting and evaluation of orthokeratology.
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Background: The Fine needle aspiration cytology (FNAC) is considered as a valuable and distinguished diagnostic test in the initial assessment of the patients presenting with a mass in the head and neck region or when a recurrence is suspected after previous treatment. Aims: This study was therefore designed to elucidate the efficacy of FNAC as an alternate diagnostic tool to histopathology in head and neck swellings and evaluation of staining efficacy of PAP and MGG stain over Haematoxylin and eosin (H and E) in routine cytopathological smears. Settings and Design: The study was conducted in the Department of Oral and Maxillofacial Pathology, where FNAC samples were collected from 150 patients with head and neck swellings. Materials and Methods: All the slides were stained with H and E, Papanicolaou (PAP), and May Grunewald Giemsa (MGG) stains. The cytopathological diagnosis was compared with histopathological diagnosis based on H and E stained sections obtained from paraffin-embedded formalin-fixed biopsy specimen of benign and malignant neoplasms. Statistical Analysis Used: The resulting data were analyzed using SPSS software version 19. Differences between the variables were analyzed using Pearson Chi-square test and Kruskal–Wallis test wherever applicable. Results: The FNAC as a diagnostic tool has sensitivity of 84.8%, 72.72%, and 78.78%, specificity of 62.5%, 75%, and 75%, and accuracy of 80.48%, 73.14%, and 78.04% in H and E, MGG, and PAP stain, respectively. PAP stain was the most efficient stain when all qualitative parameters are taken into consideration with maximum sensitivity and specificity for achieving definitive cytodiagnosis. Conclusions: The FNAC is an inexpensive and minimally invasive technique to diagnose different types of head and neck swellings and complement histopathological diagnosis.
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Chronic intestinal pseudo-obstruction (CIPO) is caused by a plethora of primary and secondary causes, dominantly involving the neuromuscular tissue, interstitial cells of Cajal, or the connective tissue framework. The lack of the connective tissue framework, known as desmosis, is evaluated by Masson's trichrome (MT) or picrosirius red stains, both of which are recommended in the London classification. We evaluated the orcein stain in detecting desmosis in comparison to the MT stain. We performed both orcein and MT stains in six previously published cases of complete or partial desmosis along with six age-matched controls. Our results showed comparable results of the orcein stain as compared to the MT stain. Additional advantages of lower cost and a clearer background in orcein stain were noteworthy, whereas MT stain can be used for the detection of additional pathology. We believe that orcein stain can be used as a cheap alternative in resource-limited settings.
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Background: Tooth stains on the front teeth are a common esthetic issue caused by tooth discoloration. Good oral hygiene habits, such as brushing your teeth twice daily with fluoride toothpaste and after meals, flossing daily, and using a whitening toothpaste, can help reduce staining and prevent cavities. Material & Methods: Many in-vitro studies has conducted to develop Dente91 Anti-Stain Toothpaste that can help in resolving the issue of demineralization, hypersensitivity, microbial strains, plaque, dental caries/tooth decay, and dental stain more effectively than other marketed products. Its composition includes ingredients such as Sodium Hexametaphosphate (SHMP), Polyvinylpyrrolidone (PVP), Tetrasodium Pyrophosphate, Covarine Blue, Zinc Citrate, Potassium Citrate, and Xylitol. Results: DENTE91 Anti-Stain toothpaste has over 99.9% significant antimicrobial efficacy and effectively reduces demineralization while enhancing the remineralization process. It also provides protection against acid attacks, promotes cell proliferation in NIH/3T3 cells, and shows significant healing activity on dental cavities. Additionally, it has the ability to occlude dentine disc lesions and reduce hypersensitivity. The findings of this study suggest that the toothpaste after using it twice a day for three days removes 63.02 % stains and also shows 80.33% improvement in teeth whitening from baseline.Conclusion: These in-vitro studies of dente91 anti-stain toothpaste concluded that toothpaste helps in resolving demineralization, hypersensitivity, plaque, dental caries/tooth decay, and dental stains. It has antimicrobial activity and teeth whitening effect too
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Background- The malignancy of the oral cavity constitutes the most important group of malignancies in South and Southeast Asia.The risk increases with the use of tobacco products. Materials & Methods- Micronuclei frequency scoring was used as a biomarker to identify different potentially malignant disorders. Results- Mean micronuclei index was found higher using Hematoxylin and Eosin stain than Papanicolaou's stainand May Grunwald's stain. Conclusion- We concluded that the micronuclei frequencies in oral exfoliated epithelial cells using three different stains- Hematoxylin and Eosin stain, Papanicolaou's stain, May Grunwald's stain may be useful in predicting the malignant potential of premalignant lesions.
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Objective:To investigate the self-defect sensation and its influencing factors in patients scheduled for photodynamic therapy for port wine stains.Methods:A total of 183 patients scheduled for photodynamic therapy for port wine stains in our hospital were selected and investigated by online questionnaire. The data of the respondents were collected by means of online filling in the questionnaire star using the General Data Survey Scale and the Defect Perception Scale (FIS) at admission.Results:The total score of self-defect in 183 patients with bright red nevus treated by photodynamic therapy was higher than that of the domestic norm. Age ( t=4.19), place of residence ( F=14.90), co-resident ( F=3.21), education level ( F=4.39), marital status ( F=2.47), income level ( F=9.51) and occupation ( F=5.82) had significantly related with the level of self-deficiency of patients ( P<0.05). The results of multiple linear regression analysis indicated that residence and income level were the main factors affecting patients′ sense of self-deficiency ( F=4.96, P<0.05). Conclusions:The overall self-defect sense of 183 patients with port wine stains treated with photodynamic therapy in this survey is more serious, their own comprehensive conditions and family structure will affect the self-defect sense of patients with port wine stains. We should pay special attention to the mental health of patients from municipal cities and low-income levels, timely carry out clinical nursing education and psychological guidance, jointly improve the compliance and cooperation of patients with treatment, and promote the rapid recovery of patients.
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ABSTRACT Acid-fast bacteria can be implicated in skin and soft tissue infections. Diagnostic identification can be challenging or not feasible by routine laboratory techniques, especially if there is no access to the Matrix Assisted Laser Desorption Ionization Time of Flight Mass Spectrometry (MALDI-TOF MS) technology. Here, we present two cases of skin and soft tissue infections caused by two different acid-fast bacteria, Nocardia brasiliensis and Mycobacterium marinum. They both grew on Löwenstein-Jensen medium, Sabouraud agar medium and blood agar medium. Both bacteria appeared acid-fast by Ziehl-Neelsen stain and Gram-positive by Gram stain. The identification was performed by MALDI-TOF MS and gene analysis. N. brasiliensis and nontuberculous mycobacterium M. marinum represent rare pathogens that cause severe skin and soft tissue infections. Failure to identify the causative agent and subsequent inappropriate or inadequate treatment may lead to severe complications or even disseminated disease, especially in immunocompromised individuals.
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O artigo desenvolve a hipótese de que o trabalho de releitura do caso Hans, realizado por Lacan no Seminário 4, A relação de objeto (1956-1957), antecipa a formulação do conceito de objeto a em seu ensino. Dois pontos cruciais em relação ao objeto são destacados em um trabalho de leitura próxima e atenta ao texto do Seminário. Nesse percurso, a introdução da falta de objeto, modulada pelas operações de privação, frustração e castração, se contrapõe à noção de uma certa presença do objeto. O artigo propõe que em sua teorização sobre a angústia do pequeno Hans, Lacan introduz a função da mancha operando como objeto a, situando-a como um resíduo impossível de ser simbolizado, a coisa preta na boca do cavalo, objeto da fobia de Hans
El artículo desarrolla la hipótesis de que la relectura del caso Juanito realizada por Lacan en el Seminario 4, La relación de objeto (1956-1957) presenta una primera versión del concepto de objeto a en su enseñanza. Del trabajo de lectura cercana del texto del Seminario se destacan dos puntos cruciales con relación al objeto. En este recorrido, la introducción de la falta de objeto, modulada por las operaciones de privación, frustración y castración, admite la noción paradójica de una cierta presencia del objeto. El artículo propone que, a partir del desarrollo de su teorización sobre la angustia del Juanito, Lacan introduce la función de la mancha operando como objeto a, ubicándola como un residuo imposible de simbolizar, la cosa negra en la boca del caballo, objeto de la fobia de Juanito
The article develops the hypothesis that the re-reading of little Hans, carried out by Lacan in Seminar 4, The Object Relation (1956-1957), presents a primary version of the objet petit a in his teaching. In this course, two crucial points concerning the object are emphasized in a close reading of the Seminar's text. The introduction of the notion of lack of object, modulated by the operations of deprivation, frustration and castration, is then opposed to the notion of a certain presence of the object. The article proposes that with the development of a theorization on little Hans' anxiety, Lacan introduces the function of the stain working as na object a, a residue impossible to be symbolized, located in the black spot in the horse's mouth, object of Hans' phobia
L'article développe l'hypothèse qui la relecture du cas le petit Hans effectuée par Lacan dans le Séminaire 4, La relation d'objet(1956-1957) anticipe la formulation du concept d'objet (a) dans son enseignement. Deux points cruciaux par rapport à l'objet sont mis en évidence dans un travail de lecture attentive du texte du Séminaire. Dans ce parcours, l'introduction de la notion de manque d'objet, modulée par les opérations de privation, frustration et castration, s'oppose à la notion d'une certaine présence de l'objet. L'article soutient qui depuis sa théorisation sur l'angoisse du petit Hans, Lacan introduit la fonction de la tache comme un résidu impossible à symboliser, la chose noire dans la bouche du cheval, objet de la phobie de Hans. Et comme tel, la tache noire opère la fonction d'(a)
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Anxiety, Castration , Frustration , Object Attachment , PsychoanalysisABSTRACT
Gallbladder tuberculosis (TB) is a rare disease, and it might be challenging to distinguish it from gallbladder cancer on clinical history and radiology. It frequently mimics carcinoma in patients who initially appear with a gallbladder mass. Gallbladder TB is only identified after histology of the resected specimen since radiography lacks pathognomic characteristics. Here, we describe a unique case of gallbladder TB that was incidentally identified when a 49-year-old lady was being evaluated for suspected gallbladder cancer. Histology of the gallbladder exhibits necrotizing granulomatous inflammation with the presence of numerous pink-colored, curved, and beaded acid-fast bacilli that were recognized on the Ziehl-Neelsen stain.
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ABSTRACT: The purpose of this research was to determine the cleaning and whitening ability of two charcoal containing toothpastes compared with baking soda, activated charcoal and a hydrogen peroxide containing whitening toothpaste. Tea-stained enamel/dentin slices were mounted dentin side down in cylinders of auto-polymerizing acrylic and subjected to simulated brushin g. Total color, ΔE, and stained area were measured using a reflectance spectrophotometer and ImageJ software using a Hue, Chroma, and Brightness color threshold method; respectively, at prescribed brushing intervals of baseline, months 1, 6 and 12. A two- w ay repeated measure analysis of variance was performed, with included factors being toothpaste group and time. Statistical analys is revealed the included factor of brushing time interval was significant (p<0.05) for both ΔE and stained area. There was significant interaction for both main effects (p<0.05) for the dependent variable of stained area alone. Significant reduction in ΔE values occurred in all groups except Optic White at the 1-month interval. Statistically significant reduction in stained area occurred at 1-mon th for the baking soda group only. Post-hoc Tukey HSD tests revealed there was significant group*time interaction for baking soda at month 1 for the variable stained area. The charcoal containing (Crest 3D with Charcoal and Colgate Essentials) and non-charcoal contai ning toothpastes (Optic White) only produced a significant stain removal at the 6-month interval.
RESUMEN: El propósito de esta investigación fue determinar la capacidad de limpieza y blanqueamiento de dos pastas dentales que contienen carbón en comparación con bicarbonato de sodio, carbón activado y una pasta dental blanqueadora que contiene peróxido de hidrógeno. Los cortes de esmalte/dentina teñidos con té se montaron con el lado de la dentina hacia abajo, en cilindros de acrílico autopolimerizable y se sometieron a un cepillado simulado. El color total, ΔE y el área teñida se midieron usando un espectrofotómetro de reflectancia y el software ImageJ usando un método de umbral de color de tono, croma y brillo; respectivamente, en los intervalos de cepillado prescritos al inicio, los meses 1, 6 y 12. Se realizó un análisis de varianza de medidas repetidas de dos vías, con factores incluidos como el grupo de pasta de dientes y el tiempo. El análisis estadístico reveló que el factor incluido del intervalo de tiempo de cepillado fue significativo (p<0,05) tanto para ΔE como para el área manchada. Hubo interacción significativa para ambos efectos principales (p<0,05) para la variable dependiente del área teñida sola. Se produjo una reducción significativa en los valores de ΔE en todos los grupos excepto Optic White en el intervalo de 1 mes. Se produjo una reducción estadísticamente significativa en el área manchada al mes solo para el grupo de bicarbonato de sodio. Las pruebas post-hoc Tukey HSD revelaron que hubo una interacción significativa entre grupo y tiempo para el bicarbonato de sodio en el mes 1 para el área manchada variable. Las pastas dentales que contenían carbón (Crest 3D con Charcoal y Colgate Essentials) y las pastas de dientes que no contenían carbón (Optic White) solo produjeron una eliminación significativa de las manchas en el intervalo de 6 meses.
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?-Amylase is an endoamylase catalysing the degradation of starch into maltose, maltotriose and glucose. The enzyme isolated from microbial sources possess unique properties of thermostability thus making it a useful tool in the detergent industry. Here, we explored a strain of thermophilic bacteria Bacillus licheniformis for its potential application in detergent industry. The B. licheniformis RA31 was isolated from soil samples of hot spring in Rampur district of Himachal Pradesh, India and grown on optimized media to produce thermostable ?-amylase. The enzyme was ethanol precipitated, purified (12.93 fold, 55.52% yield and 621.93 U/mg specific activity) to homogeneity with a single band on SDS-PAGE (66 kDa) and native-PAGE (68 kDa). Purified enzyme displayed best activity in pH 8 buffer and ?80% activity was retained in pH 7 and 10. It showed temperature optima at 70°C. Its activity was decreased at 70°C (70% after 4 h), 80°C (65% after 4 h) and 90°C (50% after 1 h). The enzyme was stimulated (126%; 5 mM) by barium chloride. It was relatively stable in the presence of commercial detergents (109-125%), SDS (84%), Tween 20 (88%), EDTA (72%) and ?-ME (70% at 10 mM). Km and Vmax for the enzymatic hydrolysis of starch were 0.339 mg/mL and 1.450 mg/min, respectively. The enzyme revealed the highest specificity towards wheat starch granule (140% after 1 h) and SEM analysis displayed its biodegradation (2-10 h). Improved cleaning efficiency of potato curry stained fine cotton clothes were observed with enzyme assisted detergent advance treatment (0.02% w/v). The enzyme showed potential applications in detergent industry.
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ABSTRACT BACKGROUND: Congenital vascular anomalies and hemangiomas (CVAH) such as infantile hemangiomas, port-wine stains and brain arteriovenous malformations (AVMs) impair patients' lives and may require treatment if complications occur. However, a great variety of treatments for those conditions exist and the best interventions remain under discussion. OBJECTIVE: To summarize Cochrane systematic review (SR) evidence on treatments for CVAH. DESIGN AND SETTING: Review of SRs conducted in the Division of Vascular and Endovascular Surgery of Universidade Federal de São Paulo, Brazil. METHODS: A broad search was conducted on March 9, 2021, in the Cochrane Database of Systematic Reviews to retrieve any Cochrane SRs that assessed treatments for CVAH. The key characteristics and results of all SRs included were summarized and discussed. RESULTS: A total of three SRs fulfilled the inclusion criteria and were presented as a qualitative synthesis. One SR reported a significant clinical reduction of skin redness by at least 20%, with more pain, among 103 participants with port-wine stains. One SR reported that propranolol improved the likelihood of clearance 13 to 16-fold among 312 children with hemangiomas. One SR reported that the relative risk of death or dependence was 2.53 times greater in the intervention arm than with conservative management, among 218 participants with brain AVMs. CONCLUSION: Cochrane reviews suggest that treatment of port-wine stains with pulsed-dye laser improves redness; propranolol remains the best option for infantile hemangiomas; and conservative management seems to be superior to surgical intervention for treating brain AVMs.
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Arteriovenous Malformations/therapy , Port-Wine Stain/surgery , Hemangioma/therapy , Brazil , Systematic Reviews as TopicABSTRACT
Objective:To analyze distribution characteristics of facial port-wine stains and brain imaging features in children with Sturge-Weber syndrome (SWS) .Methods:Clinical and imaging data were collected from 22 children with confirmed SWS at Department of Dermatology, Children′s Hospital Affiliated to Capital Institute of Pediatrics from July 2017 to August 2020, and retrospectively analyzed. The distribution characteristics of port-wine stains along the facial trigeminal nerve and brain imaging features were investigated in these children with SWS.Results:Among the 22 children, 10 were males and 12 were females. Their age ranged from 0.08 to 9.92 years, and the median age was 1.67 years. There were 13 cases of SWS type Ⅰ and 9 cases of SWS type Ⅱ. In terms of the port-wine stain type, 4 children aged from 0.50 to 2.17 years were diagnosed with pink port-wine stains; 14 children aged from 0.08 to 8.83 years were diagnosed with purple port-wine stains; 4 children aged from 4.92 to 9.92 years were diagnosed with thickened port-wine stains. Port-wine stains were distributed in the ophthalmic (V1) division of the trigeminal nerve in 22 patients, in the maxillary (V2) division in 20 patients, and in the mandibular (V3) division in 8 patients. There were 17 children with ocular abnormalities, aged from 0.08 to 9.92 years, including 11 with glaucoma, 5 with elevated intraocular pressure and 2 with visual impairment. Among the children with glaucoma, 7 developed glaucoma within 2 years of age, 8 suffered from unilateral glaucoma, and 3 from bilateral glaucoma, and glaucoma occurred on the same side as port-wine stains. Brain imaging abnormalities were observed in 12 children, and mainly included vascular malformations in the cerebral cortex involving the frontal, parietal, temporal and occipital lobes, as well as cerebral atrophy, punctate hemorrhage, calcification, sulcal widening, midline deviation and increased intraventricular choroid plexus vessels. Eleven children had symptoms of epilepsy and other neurological manifestations, including developmental delay, mental retardation and physical impairment.Conclusion:Port-wine stains distributed in the V1 and V2 divisions of the facial trigeminal nerve may indicate a higher risk of SWS, and ophthalmic and brain imaging screening as well as long-term follow-up should be performed.
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Significance@#Accurate detection of Helicobacter pylori (HP) is essential for the diagnosis of HP infection. The use of antibiotics and proton pump inhibitors (PPI) may result in false-negative rapid urease test (RUT) results. We aimed to determine the sensitivity and specificity of RUT compared with histology and assess the detection rate of combined RUT and histology for HP infection. @*Methodology@#Retrospective data collection was performed on 192 patients who were tested for both RUT and histology at the time of upper endoscopy from 2017 to 2018. At least two gastric biopsies (1 from corpus, 1 from antrum) were taken each for RUT and histology. The endoscopy was performed by a single gastroenterologist and a single pathologist was responsible for interpreting the histology with hematoxylin and eosin (H&E) and Giemsa stain. The gold standard test for the diagnosis of HP infection was histology. Demographic profile, RUT and histology results were reviewed. Tests for diagnostic accuracy were computed using SPSSv23. @*Results@#192 patients were tested for RUT and histology. 52(27.1%) were males and 140(72.9%) were females with a mean age of 54±17 years. Epigastric pain was the most common indication (42.7%). 24(12.5%) patients tested positive for HP infection. Among these; 16(8.3%) tested positive for both RUT and histology(true-positive), while 8(4.2%) tested negative for RUT but had positive histology(false-negative). 6 out of 8(75%) patients with false negative results had PPI use. The sensitivity and specificity of RUT for the diagnosis of HP infection were 66.7 and 98.2%, respectively. While the positive and negative likelihood ratio were 37.3 and 0.34, respectively with a diagnostic odds ratio of 110. @*Conclusion@#The HP detection rate of RUT combined with histology increased by 33% compared with RUT alone. RUT is a highly specific test for diagnosing HP infection. Given its modest sensitivity, histology plays an important role in the diagnosis of HP infection, especially in patients taking PPIs. We recommend doing histology when RUT is negative to increase the HP detection rate.
Subject(s)
Helicobacter pylori , Histology , Azure StainsABSTRACT
Objective:To evaluate the efficacy of medical cold patches in relieving burning pain and restoring skin homeostasis after hematoporphyrin monomethyl ether-based photodynamic therapy (HMME-PDT) for the treatment of port-wine stains.Methods:Forty patients with port-wine stains in the middle face, who met the inclusion and exclusion criteria, were collected from Department of Dermatology, the Seventh Medical Center of Chinese PLA General Hospital from November 2019 to April 2021, and randomly and equally divided into test group and control group. Patients in the test group received cold compress with medical cold patches at treatment sites for 1 hour immediately after HMME-PDT, and then once a day for 3 consecutive days, while those in the control group received no special treatment and experienced a spontaneous recovery. Pain numeric rating scale (NRS) scores were recorded immediately, 0.5, 1 and 12 hours after HMME-PDT. Skin surface temperature was measured 10 minutes before, and immediately, 30 minutes and 1 hour after HMME-PDT. Transepidermal water loss (TEWL) and water content of the stratum corneum (WCSC) were measured 10 minutes before, and immediately, 24, 48 and 72 hours after HMME-PDT. The scabbing rate was calculated at weeks 1, 2 and 3 after HMME-PDT. Two-way repeated measures analysis of variance was used for comparisons of observation indicators at different time points before and after treatment, and Bonferroni or Sidak′s test was used for comparisons between groups and within groups.Results:There were no significant differences in age, gender composition, TEWL or WCSC between the test group and control group before HMME-PDT (all P > 0.05) . Immediately after HMME-PDT, no significant difference in the NRS score was observed between the test group and control group (8.00 ± 1.17 vs. 8.20 ± 1.06, F = 0.30, P = 0.592) ; at 0.5 and 1 hour after HMME-PDT, the NRS score was significantly lower in the test group (6.25 ± 1.29, 4.80 ± 0.77, respectively) than in the control group (7.15 ± 0.99, 6.50 ± 0.69, respectively, both P < 0.05) . Immediately after HMME-PDT, the skin surface temperature in the test group and control group increased to 35.21 ± 1.333 ℃ and 35.64 ± 0.832 ℃, respectively, and there was no significant difference between the two groups ( P = 0.062) ; at 30 and 60 minutes after HMME-PDT, the skin surface temperature in the test group was 29.11 ± 1.59 ℃ and 32.46 ± 1.07 ℃ respectively, which were significantly lower than those in the control group (35.01 ± 0.91 ℃, 34.86 ± 0.74 ℃, F = 212.63, 100.20, respectively, both P < 0.001) . At 48 and 72 hours after HMME-PDT, the TEWL in the test group was 12.44 ± 0.67 g·h -1·m -2 and 10.85 ± 0.81 g·h -1·m -2 respectively, which were significantly lower than those in the control group (14.61 ± 0.34 g·h -1·m -2, 14.93 ± 0.24 g·h -1·m -2, F = 195.87, 520.54, respectively, both P < 0.001) , while the WCSC was significantly higher in the test group (57.83 ± 9.29 AU, 52.64 ± 8.09 AU, respectively) than in the control group (43.87 ± 4.82 AU, 38.68 ± 5.33 AU, F = 24.41, 49.22, respectively, both P < 0.001) . At 1 week after HMME-PDT, scab formation was observed in 3 cases in the test group, as well as in 6 cases in the control group, and there was no significant difference in the scabbing rate between the two groups ( P = 0.451) . Conclusion:The application of medical cold patches after HMME-PDT for the treatment of port-wine stains can reduce skin surface temperature, exert analgesic effects, shorten duration of postoperative pain, and promote the recovery of skin permeability barrier function.
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Hyperspectral imaging technology can obtain the spatial and spectral three-dimensional imaging of substances simultaneously, and obtain the unique continuous characteristic spectrum of substances in a wide spectrum range at a certain spatial resolution, which has outstanding advantages in the fine classification and identification of biological substances. With the development of hyperspectral imaging technology, a large amount of data has been accumulated in the exploration of data acquisition, image processing and material inspection. As a new technology means, hyperspectral imaging technology has its unique advantages and wide application prospects. It can be combined with the common biological physical evidence of blood (stains), saliva, semen, sweat, hair, nails, bones, etc., to achieve rapid separation, inspection and identification of substances. This paper introduces the basic theory of hyperspectral imaging technology and its application in common biological evidence examination research and analyzes the feasibility and development of biological evidence testing and identification, in order to provide a theoretical basis for the development of new technology and promote hyperspectral imaging technology in related biological examination, to better serve the forensic practice.