Discrimination of gallbladder stone employing Laser-Induced Breakdown Spectroscopy (LIBS) and Photoacoustic Spectroscopy (PAS)

Gazali, Zainab; Kumar, Rohit; Pradeep, Konda Gokuldoss; Pramod, K.; Awadhesh, K.; Thakur, Surya N.

doi:10.1016/j.saa.2021.119948

Cited by 22 publications

(9 citation statements)

References 26 publications

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“…The material composition can be analyzed quickly and directly. Notably, LIBS can detect all elements in almost any solid sample and simultaneously analyze multiple elements [15][16][17]. Owing to its many advantages, LIBS has attracted the attention of researchers from various elds, including oil exploration [18], metallurgy and combustion [19], medical and pharmaceutical technologies [20], environmental monitoring [21], agriculture [22], military [23], and aerospace engineering [24].…”

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Rapid quantitative analysis of calcium in infant formula powder assisted by long short-term memory with variable importance using laser-induced breakdown spectroscopy

Ding

Yang

Chen

et al. 2022

Preprint

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Calcium is the main mineral responsible for healthy bone growth in infants. In this study, LIBS was combined with a variable importance-based long short-term memory (VI-LSTM) for the quantitative analysis of calcium in infant formula powder. Firstly, the full spectra were used to establish PLS and LSTM models. The R2 and root-mean-square error (RMSE) of the test set (R2P and RMSEP) were 0.1460 and 0.0093 in the PLS method, respectively, and 0.1454 and 0.0091 in the LSTM model, respectively. To improve the quantitative performance, variable selection based on variable importance was introduced to evaluate the contribution of input variables. The variable importance-based PLS (VI-PLS) model had R2P and RMSEP of 0.1454 and 0.0091, respectively, whereas the VI-LSTM model had R2P and RMSEP of 0.9845 and 0.0037, respectively. Compared with the LSTM model, the number of input variables in the VI-LSTM model was reduced to 276, R2P was improved by 114.63%, and RMSEP was reduced by 46.38%. The mean relative error of the VI-LSTM model was 3.33%. This study confirms the predictive ability of the VI-LSTM model for calcium element in infant formula powder. Thus, combining VI-LSTM modeling and LIBS has great potential for the quantitative elemental analysis of dairy products.

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Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Rapid quantitative analysis of calcium in infant formula powder assisted by long short-term memory with variable importance using laser-induced breakdown spectroscopy

Ding

Yang

Chen

et al. 2022

Preprint

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“…Lincomycin, on the other hand, caused gallbladder inflammation and stimulated mucus secretion to create an environment for the precipitation and accumulation of bile pigments. The UCB was supersaturated and contacted with Ca 2+ in the bile, so the bilirubin calcium precipitation-dissolution lose balance to lead to the formation of stone bile (Gazali et al, 2021). Lincomycin with a lithogenic diet effectively decreased the molding time and increased the success rate.…”

Section: Discussionmentioning

confidence: 99%

Effect of defatted walnut powder extract on pigment gallstones and its metabolism in vitro

FANG

et al. 2023

Food Sci. Technol

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Gallstones disease is classified as cholesterol, pigment and mixed gallstones. Pigment gallstones is a common disease, and some patients experienced complications such as biliary pain and cholecystitis. Defatted walnut powder extract (DWPE) is extracted from the main by-product after oil extraction of the functional food walnut and can treat cholesterol gallstones. However, the effect of DWPE on pigment gallstones has not been reported. Thus, this paper aimed at exploring the potential mechanism of alleviating pigment gallstones and the metabolism of DWPE in vitro by UPLC-Q-Exactive Orbitrap MS to elucidate potential pharmacodynamic substances. It was found that DWPE significantly reduced the incidence of gallstones, the contents of unconjugated bilirubin and calcium, the inflammation of gallbladder tissue, the edema and congestion of gallbladder tissue, and the infiltration of inflammatory cells. In metabolism, a total of 35 metabolites of DWPE, including its main compounds ellagic acid and glansreginin A, were characterized in the intestine with various metabolic reactions. Presumably, the small molecular compounds generated after the metabolism by intestinal bacteria may be the pharmacodynamic substances of DWPE on pigment gallstones. This study revealed the effect of DWPE in treating pigment gallstones and their metabolism in vitro.

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“…In the majority of previous LIBS studies focused on the characterization of solid materials' surface hardness, [11][12][13][14][15][16][17][18][19]31,32,[34][35][36] the establishment of a calibration curve is based on the positive relationship between the intensity ratio of ionic to atomic lines and the surface hardness. As mentioned in the Introduction section, it was interpreted as an effect mediated by shock waves.…”

Section: Characterization Of Surface Rigidity By Libsmentioning

confidence: 99%

“…Recently, its application as an innovative method for in situ characterizing materials’ surface mechanical properties has been validated frequently. 11–36 All papers found regarding this topic used materials with strengths much larger than dozens of MPa (hereinafter defined as solid materials) such as concretes, 11 mineralized biological materials, 12–15 bulk metals, 16–28 ceramics, 29,30 stones, 31–35 and pharmaceutical tablets. 36 In almost all of these papers, the method was developed in light of the role of the shock wave in the expansion of a laser-induced plasma from a solid material after the end of a laser pulse.…”

Section: Introductionmentioning

confidence: 99%

Using laser-induced breakdown spectroscopy to characterize the surface mechanical properties of soft materials

Liu

Gong

et al. 2023

J. Anal. At. Spectrom.

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Discrimination of gallbladder stone employing Laser-Induced Breakdown Spectroscopy (LIBS) and Photoacoustic Spectroscopy (PAS)

Cited by 22 publications

References 26 publications

WITHDRAWN: Rapid quantitative analysis of calcium in infant formula powder assisted by long short-term memory with variable importance using laser-induced breakdown spectroscopy

WITHDRAWN: Rapid quantitative analysis of calcium in infant formula powder assisted by long short-term memory with variable importance using laser-induced breakdown spectroscopy

Effect of defatted walnut powder extract on pigment gallstones and its metabolism in vitro

Using laser-induced breakdown spectroscopy to characterize the surface mechanical properties of soft materials

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