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Naeem MT, Usman AH, Ali S, Raza H, Shah AN, Mahmmoud Fadelallah Eljack M. Intravesical mitomycin C efficacy in acidic and alkaline urinary pH: impact on recurrence-free survival rate after TURBT. Ann Med Surg (Lond) 2023; 85:5323-5327. [PMID: 37915689 PMCID: PMC10617880 DOI: 10.1097/ms9.0000000000001350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 09/17/2023] [Indexed: 11/03/2023] Open
Abstract
Background Urinary bladder tumor recurrence following transurethral resection of bladder tumor (TURBT) is a common issue. This study aims to determine how urine alkalinization affects bladder tumor recurrence after surgery. Materials and methods Sixty patients receiving mitomycin C (MMC) therapy after TURBT were divided into two groups based on mean pH values. Twenty-six patients were in group A, whose urine pH was below 5.5. However, there were 34 patients in group B, and their urine pH was higher than 5.5. Both groups of patients were given intravesical MMC once weekly for 6 weeks following TURBT. A cystoscopy was performed as a follow-up at 3, 6, and 12 months. Urine pH and the recurrence-free survival rate were compared using Kaplan-Meier survival analysis and the COX proportional hazard model. Results The mean time to tumor recurrence in group A (intravesical MMC in acidic urine) and group B (intravesical MMC in alkaline urine) was 12.48 versus 16.84 months, respectively. Alkaline urine pH was identified as an independent predictor of preventing the recurrence of superficial bladder tumors by univariate COX regression analysis. Age, sex, and mean tumor size did not affect the likelihood of tumor recurrence. However, smoking had an association with increased tumor recurrence. Conclusion Tumor recurrence post-TURBT is delayed in patients with alkaline urine pH. Smoking is an independent risk factor for bladder tumors.
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Affiliation(s)
| | | | - Sarmad Ali
- Al-Shifa Hospital, Hospital Road, Mandi Bahuddin
| | - Hassan Raza
- Gujranwala Teaching Hospital, Gujranwala, Pakistan
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2
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Menchikov LG, Shestov AA, Popov AV. Warburg Effect Revisited: Embodiment of Classical Biochemistry and Organic Chemistry. Current State and Prospects. BIOCHEMISTRY (MOSCOW) 2023; 88:S1-S20. [PMID: 37069111 DOI: 10.1134/s0006297923140018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
The Nobel Prize Winner (1931) Dr. Otto H. Warburg had established that the primary energy source of the cancer cell is aerobic glycolysis (the Warburg effect). He also postulated the hypothesis about "the prime cause of cancer", which is a matter of debate nowadays. Contrary to the hypothesis, his discovery was recognized entirely. However, the discovery had almost vanished in the heat of battle about the hypothesis. The prime cause of cancer is essential for the prevention and diagnosis, yet the effects that influence tumor growth are more important for cancer treatment. Due to the Warburg effect, a large amount of data has been accumulated on biochemical changes in the cell and the organism as a whole. Due to the Warburg effect, the recovery of normal biochemistry and oxygen respiration and the restoration of the work of mitochondria of cancer cells can inhibit tumor growth and lead to remission. Here, we review the current knowledge on the inhibition of abnormal glycolysis, neutralization of its consequences, and normalization of biochemical parameters, as well as recovery of oxygen respiration of a cancer cell and mitochondrial function from the point of view of classical biochemistry and organic chemistry.
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Affiliation(s)
- Leonid G Menchikov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, 119991, Russian Federation
| | - Alexander A Shestov
- University of Pennsylvania, Department of Pathology and Laboratory Medicine, Perelman Center for Advanced Medicine, Philadelphia, PA 19104, USA
| | - Anatoliy V Popov
- University of Pennsylvania, Department of Radiology, Philadelphia, PA 19104, USA.
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3
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Han JH, Jeong SH, Yuk HD, Jeong CW, Kwak C, Ku JH. Acidic urine is associated with poor prognosis in patients with bladder cancer undergoing radical cystectomy. Front Oncol 2022; 12:964571. [PMID: 36091123 PMCID: PMC9459327 DOI: 10.3389/fonc.2022.964571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 07/22/2022] [Indexed: 12/24/2022] Open
Abstract
Purpose To assess the prognostic value of acidic urine (low urine pH) in patients with bladder cancer undergoing radical cystectomy. Materials and methods We reviewed patients enrolled in the Seoul National University Prospectively Enrolled Registry for Urothelial Cancer-Cystectomy (SUPER-UC-Cx) who underwent radical cystectomy for bladder cancer between March 2016 and December 2020 at the Seoul National University Hospital. During this period, 368 patients were registered in our database. To eliminate confounding factors, we excluded patients diagnosed with non-urothelial cancer and end-stage renal disease. Results A total of 351 patients with a mean age of 69.8 ± 10.5 years and median follow-up of 16.0 months were eligible for the analysis. The mean preoperative urine pH was 6.0. The patients were divided into low (pH ≤ 5.5) and high (pH≥6.0) urine pH groups for comparison. All clinicopathological features, including the tumor size, grade, and stage were comparable between the low and high urine pH groups. A Cox regression analysis was performed to assess the independent effect of acidic urine on patient survival. A multivariate analysis showed that high T stage (T3-4) (hazard ratio (HR) 5.18, P<0.001), decreased renal function (estimated glomerular filtration rate <60 mL/min/1.73 m2) (HR 2.29, P=0.003), and low urine pH (≤5.5) (HR 1.69, P=0.05) were associated with shortened recurrence-free survival (RFS). Regarding the overall survival (OS), high T stage (T3-4) (HR 7.15, P<0.001) and low urine pH (≤5.5) (HR 2.66, P=0.029) were significantly associated with shortened survival. A Kaplan–Meier analysis demonstrated that the acidic urine group showed shorter RFS (P=0.04) and OS (P=0.028) than the other groups. Conclusions Acidic urine was independently associated with reduced RFS and OS in patients with bladder cancer undergoing radical cystectomy. Acidic urine contributing to an acidic tumor environment may promote aggressive behavior in bladder cancer.
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Affiliation(s)
- Jang Hee Han
- Department of Urology, Seoul National University Hospital, Seoul, South Korea
| | - Seung-hwan Jeong
- Department of Urology, Seoul National University Hospital, Seoul, South Korea
| | - Hyeong Dong Yuk
- Department of Urology, Seoul National University Hospital, Seoul, South Korea
- Department of Urology, Seoul National University College of Medicine, Seoul, South Korea
| | - Chang Wook Jeong
- Department of Urology, Seoul National University Hospital, Seoul, South Korea
- Department of Urology, Seoul National University College of Medicine, Seoul, South Korea
| | - Cheol Kwak
- Department of Urology, Seoul National University Hospital, Seoul, South Korea
- Department of Urology, Seoul National University College of Medicine, Seoul, South Korea
| | - Ja Hyeon Ku
- Department of Urology, Seoul National University Hospital, Seoul, South Korea
- Department of Urology, Seoul National University College of Medicine, Seoul, South Korea
- *Correspondence: Ja Hyeon Ku,
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4
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Wang R, Wen ZY, Liu FH, Wei YF, Xu HL, Sun ML, Zhao YH, Gong TT, Wang HH, Wu QJ. Association between dietary acid load and cancer risk and prognosis: An updated systematic review and meta-analysis of observational studies. Front Nutr 2022; 9:891936. [PMID: 35967803 PMCID: PMC9365077 DOI: 10.3389/fnut.2022.891936] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
Epidemiological studies have suggested that dietary acid load (DAL) might be related to the risk and prognosis of cancer, whereas the evidence is contentious. Several high-quality observational studies have been published following a prior systematic review with only one study included. Consequently, we conducted an updated systematic review and meta-analysis to comprehensively investigate the relationship between DAL and cancer risk and prognosis. A systematic literature search was conducted in the PubMed, Embase, and Web of Science databases from inception to 26 October 2021. Summary relative risks (RRs) with 95% CIs were calculated using a random-effects model. Publication bias, subgroup, meta-regression, and sensitivity analyses were also conducted. Ten observational studies (six cohorts and four case–control studies) with 227,253 participants were included in this systematic review and meta-analysis. The summary RRs revealed a statistically significant associations between DAL and cancer risk (RR = 1.58, 95% CI = 1.23–2.05, I2 = 71.9%, n = 7) and prognosis (RR = 1.53, 95% CI = 1.10–2.13, I2 = 77.1%, n = 3). No evidence of publication bias was observed in the current analysis. Positive associations were observed in most subgroup analyses stratified by predefined factors, including region, study design, study quality, study population, participants’ gender, age of participants, cancer type, DAL assessment indicator, and adjustment of potential confounding parameters. No evidence of heterogeneity between subgroups was indicated by meta-regression analyses. The high DAL might be associated with an increased risk of cancer, as well as a poor prognosis of cancer. More high-quality prospective studies are warranted to further determine the associations between DAL and risk and prognosis for specific cancers.
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Affiliation(s)
- Ran Wang
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Zhao-Yan Wen
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Fang-Hua Liu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yi-Fan Wei
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - He-Li Xu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ming-Li Sun
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yu-Hong Zhao
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ting-Ting Gong
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Hui-Han Wang
- Department of Hematology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qi-Jun Wu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China.,Department of Hematology, Shengjing Hospital of China Medical University, Shenyang, China
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Jun C, Kim A, Song SH, Oh E. Dual Sensing Acousto-electric Sensor. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2022; 2022:2471-2474. [PMID: 36086306 DOI: 10.1109/embc48229.2022.9871343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Simultaneous monitoring of multiple physiological parameters are highly desirable for disease diagnosis and management. However, simultaneous interrogations of parameters from miniaturized sensors can be difficult; to overcome this difficulties, we present the dual sensing acousto-electric sensor capable of simultaneously measuring pressure and pH. The dual sensing is achieved by two electrically decoupled LC tanks emitting RF signal at their respective resonant frequencies under ultrasonic excitation. We designed, fabricated, and tested the dual sensing acousto-electric sensor.
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Bahrami A, Khalesi S, Ghafouri-Taleghani F, Alibeyk S, Hajigholam-Saryazdi M, Haghighi S, Hejazi E. Dietary acid load and the risk of cancer: a systematic review and dose-response meta-analysis of observational studies. Eur J Cancer Prev 2022; 31:577-584. [PMID: 35307716 DOI: 10.1097/cej.0000000000000748] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
AIMS Recent evidence suggests the link between adherence to an acidogenic diet and the risk of some types of cancers, such as colorectal and breast cancers. This systematic review and meta-analysis aimed to clarify the association between dietary acid load and cancer risk. DATA SEARCH AND SYNTHESIS Online databases (PubMed, Scopus, EMBASE, Scholar Google and ISI web of sciences) were searched between January 1990 and May 2021. The risk ratio (RR) was extracted from eligible studies and random-effects meta-analysis was performed to calculate pooled RR of studies. Nine studies (three cohorts, six case-control) were included. Higher dietary acid load scores [including potential renal acid load (PRAL) and net endogenous acid production (NEAP)] were associated with the increased risk of cancer [RRPRAL, 1.77; 95% confidence interval (CI), 1.27-2.46; n = 8; RRNEAP, 1.58, 95% CI: 1.20-2.09, n = 7). Dose-response analysis suggested that a 20-score increase in dietary PRAL and NEAP was associated with 27 and 8% higher risk of cancer, respectively (RRPRAL, 1.27; 95% CI, 1.02-1.60; nonlinearity P = 0.12; RRNEAP, 1.08; 95% CI, 1.02-1.13, nonlinearity P = 0.06). A significant positive relationship between dietary PRAL and risk of cancer was only observed in the subgroup of women. Associations were significant in both men and women for dietary NEAP. Subgroup analyses based on cancer type were only possible for breast cancer. There was no significant association between dietary acid load (PRAL and NEAP) and breast cancer risk. CONCLUSION Our analysis showed that high adherence to an acidogenic diet is associated with an increased risk of cancer. The protocol for this meta-analysis was registered in PROSPERO registration no. CRD42019146460.
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Affiliation(s)
- Alireza Bahrami
- Student Research Committee, Department and Faculty of nutrition sciences and food technology Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran Physical Activity Research Group, Appleton Institute & School of Health, Medical and Applied Sciences, Central Queensland University, Brisbane, Australia National Nutrition and Food Technology Research Institute Department of Oncology, Gastroenterology and Liver Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Han JH, Jeong SH, Yuk HD, Jeong CW, Kwak C, Ku JH. Acidic Urine Is Associated With Poor Prognosis of Upper Tract Urothelial Carcinoma. Front Oncol 2022; 11:817781. [PMID: 35141155 PMCID: PMC8818799 DOI: 10.3389/fonc.2021.817781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 12/28/2021] [Indexed: 12/05/2022] Open
Abstract
Purpose To assess the prognostic role of acidic urine (low urine pH) in upper tract urothelial cancer (UTUC). Materials and Methods We reviewed patients enrolled in Seoul National University Prospectively Enrolled Registry for Urothelial Cancer-Upper Tract Urothelial Cancer (SUPER-UC-UTUC) who underwent surgical resection from March 2016 to December 2020 in Seoul National University Hospital (SNUH). Patients with non-urothelial cancer or those who are in condition at end-stage renal disease were excluded. Acidic urine was defined as urine pH ≤ 5.5. Results A total of 293 patients with a mean age of 70.7 ± 9.5 years were enrolled in this study. Pre-operative laboratory results showed a mean estimated glomerular filtration rate (eGFR) of 64.1 ± 19.2 mL/min/1.73m2 and a mean urine pH of 5.86 ± 0.66. Patients were subdivided into low (pH ≤ 5.5) and high (pH > 5.5) urine pH for comparison. As a result, all variables were comparable except for the T stage, which was significantly higher in the low urine pH group (p = 0.017). Cox regression analysis was performed to assess the clinical impact of acidic urine on patient survival. Multivariate Cox regression analysis revealed that tumor multifocality (HR 2.07, p = 0.015), higher T stage (HR 1.54, p = 0.036), lymphovascular invasion (HR 1.69, p = 0.033), eGFR < 60 mL/min per 1.73 m2 (HR 1.56, p = 0.017), and acidic urine (HR 1.63, p < 0.01) independently decreased disease-free survival (DFS), while multifocality (HR 9.50, p < 0.01), higher T stage (HR 9.51, p = 0.001) and acidic urine (HR 10.36, p = 0.004) independently reduced the overall survival (OS). Conclusions Acidic urine is independently associated with reduced DFS and OS in UTUC. Acidic urine contributing to acidic environment may promote acquisition of agressive behavior of UTUC.
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Affiliation(s)
- Jang Hee Han
- Department of Urology, Seoul National University Hospital, Seoul, South Korea
| | - Seung-hwan Jeong
- Department of Urology, Seoul National University Hospital, Seoul, South Korea
| | - Hyeong Dong Yuk
- Department of Urology, Seoul National University Hospital, Seoul, South Korea
- Department of Urology, Seoul National University College of Medicine, Seoul, South Korea
| | - Chang Wook Jeong
- Department of Urology, Seoul National University Hospital, Seoul, South Korea
- Department of Urology, Seoul National University College of Medicine, Seoul, South Korea
| | - Cheol Kwak
- Department of Urology, Seoul National University Hospital, Seoul, South Korea
- Department of Urology, Seoul National University College of Medicine, Seoul, South Korea
| | - Ja Hyeon Ku
- Department of Urology, Seoul National University Hospital, Seoul, South Korea
- Department of Urology, Seoul National University College of Medicine, Seoul, South Korea
- *Correspondence: Ja Hyeon Ku,
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8
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Wang DQ, Shuai J, Zheng H, Guo ZQ, Huang Q, Xu XF, Li XD, Zi H, Ming DJ, Ren XY, Zeng XT. Can Routine Blood and Urine Parameters Reveal Clues to Detect Bladder Cancer? A Case–Control Study. Front Oncol 2022; 11:796975. [PMID: 35127507 PMCID: PMC8813745 DOI: 10.3389/fonc.2021.796975] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 12/28/2021] [Indexed: 12/24/2022] Open
Abstract
Objective Limited attention has been paid to abnormal blood and urine test results for patients with bladder cancer. The present study aimed to identify whether blood and urine parameters are associated with bladder cancer. Methods We used a case–control design and matched each patient with bladder cancer with three healthy controls of the same age and sex. Univariate conditional logistic regression was used to calculate the crude and adjusted odds ratio (OR) and its 95% CI. Multivariate conditional logistic regression was performed for confounders adjustment, and Spearman’s correlation coefficient was used to assess the correlation between tumor T stages and urine parameters. Results Patients with bladder cancer (n = 360) and controls (n = 1050) were recruited. In the univariate conditional logistic analysis, higher urine pH was associated with a decreased risk of bladder cancer (OR = 0.67, 95% CI = 0.57–0.78), while higher values of urine protein (OR = 4.55, 95% CI = 3.36–6.15), urine glucose (OR = 1.56, 95% CI = 1.18–2.05), and urine occult blood (OR = 4.27, 95% CI = 3.44–5.29) were associated with an increased risk of bladder cancer. After adjustment for body mass index, fasting blood glucose, hypertension, red blood cells, white blood cells, lymphocytes, neutrophils, and platelets, significance still remained for urine pH (OR = 0.68, 95% CI = 0.53–0.88), urine protein (OR = 1.97, 95% CI = 1.21–3.19), urine glucose (OR = 2.61, 95% CI = 1.39–4.89), and urine occult blood (OR = 3.54, 95% CI = 2.73–4.58). Conclusion This study indicated that lower urine pH and higher values of urine protein, urine glucose, and urine occult blood might be risk factors for bladder cancer.
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Affiliation(s)
- Dan-Qi Wang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Juan Shuai
- Department of Geriatrics, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Hang Zheng
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Zhong-Qiang Guo
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Qiao Huang
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xiao-Feng Xu
- Department of Urology, Xianyang Central Hospital, Xianyang, China
| | - Xiao-Dong Li
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng, China
- Institutes of Evidence-Based Medicine and Knowledge Translation, Henan University, Kaifeng, China
| | - Hao Zi
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng, China
- Institutes of Evidence-Based Medicine and Knowledge Translation, Henan University, Kaifeng, China
| | - Dao-Jing Ming
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng, China
- Institutes of Evidence-Based Medicine and Knowledge Translation, Henan University, Kaifeng, China
| | - Xuan-Yi Ren
- Department of Urology, Kaifeng Central Hospital, Kaifeng, China
- *Correspondence: Xian-Tao Zeng, , ; Xuan-Yi Ren,
| | - Xian-Tao Zeng
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
- *Correspondence: Xian-Tao Zeng, , ; Xuan-Yi Ren,
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Ajileye A, Akinbo F. Cytomorphological analysis of urinary cells among active and passive cigarette smokers in South-West, Nigeria. ADVANCES IN HUMAN BIOLOGY 2022. [DOI: 10.4103/aihb.aihb_134_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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10
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Milajerdi A, Shayanfar M, Benisi-Kohansal S, Mohammad-Shirazi M, Sharifi G, Tabibi H, Esmaillzadeh A. A Case-Control Study on Dietary Acid Load in Relation to Glioma. Nutr Cancer 2021; 74:1644-1651. [PMID: 34323133 DOI: 10.1080/01635581.2021.1957134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Limited data are available linking dietary factors to glioma. The current study was conducted to investigate the association between Dietary Acid Load (DAL) and odds of glioma in Iranian adults. This case-control study was done on 128 newly diagnosed patients with glioma and 256 healthy controls in Tehran, Iran. A validated detailed food frequency questionnaire (FFQ) was used to assess dietary intakes of participants. DAL was estimated using the protein to potassium ratio (Pro: K). Glioma was diagnosed based on pathological tests. A detailed questionnaire including several non-dietary confounders was also completed. Participants in the highest tertile of DAL score had a non-significant higher odds of glioma as compared to those in the lowest tertile (OR: 1.50; 95% CI: 0.88-2.57), which remained after controlling for some potential confounders (OR: 1.66; 0.70-3.91). After further adjustment for dietary intakes of meats and processed meats, legumes and nuts, fruits, salt tea, and coffee, those in the top tertile of DAL score were significantly more likely to have glioma than those in the bottom tertile (OR: 3.09; 95% CI: 1.06, 8.99; P = 0.03). This association was also reached following further adjustment for BMI (OR: 3.05; 95% CI: 1.04, 8.91; P = 0.03). We found a significant positive association between dietary acid load, as estimated by Prot:K ratio, and odds of glioma among adults. Further studies, in particular prospective cohorts with long-term follow up, are required to confirm these findings.
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Affiliation(s)
- Alireza Milajerdi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Islamic Republic of Iran.,Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi Shayanfar
- Department of Clinical Nutrition and Dietetics, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sanaz Benisi-Kohansal
- Department of Clinical Nutrition and Dietetics, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Minoo Mohammad-Shirazi
- Department of Clinical Nutrition and Dietetics, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Giuve Sharifi
- Department of Neurosurgery, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hadi Tabibi
- Department of Clinical Nutrition and Dietetics, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ahmad Esmaillzadeh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran.,Diabetes Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.,Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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11
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Shi LW, Wu YL, Hu JJ, Yang PF, Sun WP, Gao J, Wang K, Peng Y, Wu JJ, Zhong GC. Dietary Acid Load and the Risk of Pancreatic Cancer: A Prospective Cohort Study. Cancer Epidemiol Biomarkers Prev 2021; 30:1009-1019. [PMID: 33619018 DOI: 10.1158/1055-9965.epi-20-1293] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/16/2020] [Accepted: 02/18/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Modern Western diets are rich in acidogenic foods. Human and in vitro studies suggest a potential link between dietary acid load and cancer risk. However, no epidemiologic studies have investigated the association of dietary acid load with the risk of pancreatic cancer. Therefore, we conducted a prospective cohort study to fill this gap. METHODS A population-based cohort of 95,708 American adults was identified. Potential renal acid load (PRAL) and net endogenous acid production (NEAP) were used to assess dietary acid load of each subject, with greater values indicating greater dietary acid load. Cox regression was used to estimate risk estimates for pancreatic cancer incidence. Predefined subgroup analysis was used to identify the potential effect modifiers. RESULTS A total of 337 pancreatic cancer cases were observed during 848,534.0 person-years of follow-up. PRAL score was found to be positively associated with the risk of pancreatic cancer [fully adjusted HRquartile 4 vs. 1: 1.73; 95% confidence interval (95% CI), 1.21-2.48; P trend = 0.001] in a nonlinear dose-response pattern (P nonlinearity = 0.012). Subgroup analysis found that the positive association of PRAL score with the risk of pancreatic cancer was more pronounced in subjects aged <65 years than in those ≥65 years (P interaction = 0.018). Similar results were obtained for NEAP score. CONCLUSIONS Higher dietary acid load is associated with a higher risk of pancreatic cancer. Future studies should validate our findings in other populations and settings. IMPACTS This is the first epidemiologic study suggesting that reducing dietary acid load may be useful in primary prevention of pancreatic cancer.
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Affiliation(s)
- Li-Wei Shi
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yi-Lin Wu
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jie-Jun Hu
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Peng-Fei Yang
- Department of Nephrology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wei-Ping Sun
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jian Gao
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Kang Wang
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yang Peng
- Department of Geriatrics, The Fifth People's Hospital of Chengdu, Chengdu, China
| | - Jing-Jing Wu
- Department of Nutrition and Food Hygiene, School of Public Health and Management, Chongqing Medical University, Chongqing, China
| | - Guo-Chao Zhong
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Diet-dependent acid load and the risk of colorectal cancer and adenoma: a case-control study. Public Health Nutr 2020; 24:4474-4481. [PMID: 33087202 DOI: 10.1017/s1368980020003420] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
OBJECTIVES Colorectal cancer (CRC) is the third and second most prevalent cancer in men and women, respectively. Various epidemiological studies indicated that dietary factors are implicated in the aetiology of CRC and its precursor, colorectal adenomas (CRA). Recently, much attention has been given to the role of acid-base balance in the development of chronic diseases including cancers. Therefore, the aim of the current study is to examine the association of diet-dependent acid load and the risk of CRC and CRA. DESIGN In this case-control study, potential renal acid load (PRAL) was computed based on dietary intake of participants assessed via a validated FFQ. Negative PRAL values indicated a base-forming potential, while positive values of PRAL implied acid-forming potential of diet. Logistic regression was used to derive OR and 95 % CI after adjusting for confounders. SETTING Tehran, Iran. PARTICIPANTS A total of 499 participants aged 30-70 years were included in the study (240 hospital controls, 129 newly diagnosed CRC and 130 newly diagnosed CRA). The current study was conducted between December 2016 and September 2018. RESULTS After adjusting for potential confounders, a higher PRAL was associated with increased odds of CRC and CRA. The highest v. the lowest tertile of PRAL for CRC and CRA was OR 4·82 (95 % CI 2·51-9·25) and OR 2·47 (95 % CI 1·38-4·42), respectively. CONCLUSIONS The findings of the current study suggested that higher diet-dependent acid load is associated with higher risk of CRC and CRA.
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Zhu S, Corsetti S, Wang Q, Li C, Huang Z, Nabi G. Optical sensory arrays for the detection of urinary bladder cancer-related volatile organic compounds. JOURNAL OF BIOPHOTONICS 2019; 12:e201800165. [PMID: 30168296 PMCID: PMC7065633 DOI: 10.1002/jbio.201800165] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 08/29/2018] [Indexed: 05/06/2023]
Abstract
Non-invasive detection of urinary bladder cancer remains a significant challenge. Urinary volatile organic compounds (VOCs) are a promising alternative to cell-based biomarkers. Herein, we demonstrate a novel diagnosis system based on an optic fluorescence sensor array for detecting urinary bladder cancer VOCs biomarkers. This study describes a fluorescence-based VOCs sensor array detecting system in detail. The choice of VOCs for the initial part was based on an extensive systematic search of the literature and then followed up using urinary samples from patients with urinary bladder transitional cell carcinoma. Canonical discriminant analysis and partial least squares discriminant analysis (PLS-DA) were employed and correctly detected 31/48 urinary bladder cancer VOC biomarkers and achieved an overall 77.75% sensitivity and 93.25% specificity by PLS-DA modelling. All five urine samples from bladder cancer patients, and five healthy controls were successfully identified with the same sensor arrays. Overall, the experiments in this study describe a real-time platform for non-invasive bladder cancer diagnosis using fluorescence-based gas-sensor arrays. Pure VOCs and urine samples from the patients proved such a system to be promising; however, further research is required using a larger population sample.
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Affiliation(s)
- Simian Zhu
- Cancer Research DivisionSchool of Medicine, University of DundeeDundeeUK
- Mechanical and Electronic Engineering, School of Science and EngineeringUniversity of DundeeDundeeUK
| | | | - Qifan Wang
- Mechanical and Electronic Engineering, School of Science and EngineeringUniversity of DundeeDundeeUK
| | - Chunhui Li
- Mechanical and Electronic Engineering, School of Science and EngineeringUniversity of DundeeDundeeUK
| | - Zhihong Huang
- Mechanical and Electronic Engineering, School of Science and EngineeringUniversity of DundeeDundeeUK
| | - Ghulam Nabi
- Cancer Research DivisionSchool of Medicine, University of DundeeDundeeUK
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14
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Safabakhsh M, Imani H, Yaseri M, Omranipour R, Shab-Bidar S. Higher dietary acid load is not associated with risk of breast cancer in Iranian women. Cancer Rep (Hoboken) 2019; 3:e1212. [PMID: 32671997 DOI: 10.1002/cnr2.1212] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 07/22/2019] [Accepted: 07/25/2019] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Dietary acid load (DAL) may play a key role in certain cancers, including breast cancer (BC); however, evidence showing a causal relationship is lacking. AIM We examined the relationship between DAL, assessed with both the potential renal acid load (PRAL) and the net endogenous acid production (NEAP) scores, and BC risk. METHODS We identified 150 women who had a diagnosis of BC recently and 150 age-matched apparently healthy controls. Data from dietary intake and anthropometric measures were collected from participants and eventually, PRAL and NEAP scores were obtained from nutrient intakes. Multivariate odds ratios (OR) with 95% confidence intervals (CI) were used to evaluate the relationship of BC risk with PRAL and NEAP scores. RESULTS The odds ratios (OR) of BC according to tertiles of PRAL and NEAP scores by multivariate logistic regression models revealed that both PRAL (P-trend = 0.8) and NEAP (P-trend = 0.1) scores were not significantly associated with BC risk. After controlling confounders, multiple logistic regressions still remained non-significant which indicated no significant associations between PRAL (P-trend = 0.9), NEAP (P-trend = 0.4) scores and risk of BC. CONCLUSION The results of our study suggested that there is no significant relationship between DAL and BC incidence among Iranian women.
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Affiliation(s)
- Maryam Safabakhsh
- Clinical Nutrition Department, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Hossein Imani
- Clinical Nutrition Department, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mehdi Yaseri
- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Sakineh Shab-Bidar
- Community Nutrition Department, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
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15
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Dietary acid load and cardiometabolic risk factors: a systematic review and meta-analysis of observational studies. Public Health Nutr 2019; 22:2823-2834. [PMID: 31124769 DOI: 10.1017/s1368980019001125] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Dietary acid load (DAL) might contribute to change the levels of cardiometabolic risk factors; however, the results are conflicting. The present review was conducted to determine the relationship between DAL and cardiometabolic risk factors. DESIGN Systematic review and meta-analysis. SETTING A systematic search was conducted in electronic databases including ISI Web of Science, PubMed/MEDLINE, Scopus and Google Scholar for observational studies which assessed cardiometabolic risk factors across DAL. Outcomes were lipid profile, glycaemic factors and anthropometric indices. Effect sizes were derived using a fixed- or random-effect model (DerSimonian-Laird). Also, subgroup analysis was performed to find the probable source of heterogeneity. Egger's test was performed for finding any publication bias. RESULTS Thirty-one studies were included in the current review with overall sample size of 92 478. There was a significant relationship between systolic blood pressure (SBP; weighted mean difference (WMD) = 1·74 (95 % CI 0·25, 3·24) mmHg; P = 0·022; I2 = 95·3 %), diastolic blood pressure (DBP; WMD = 0·75 (95 % CI 0·07, 1·42) mmHg; P = 0·030; I2 = 80·8 %) and DAL in cross-sectional studies. Serum lipids, glycaemic parameters including fasting blood sugar, glycated Hb, serum insulin, homeostatic model assessment of insulin resistance and waist circumference had no significant relationship with DAL. No publication bias was found. BMI was not associated with DAL in both cross-sectional and cohort studies. CONCLUSIONS Higher DAL is associated with increased SBP and DBP. More studies are needed to find any relationship of DAL with lipid profile and glycaemic factors.
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16
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Park YMM, Steck SE, Fung TT, Merchant AT, Elizabeth Hodgson M, Keller JA, Sandler DP. Higher diet-dependent acid load is associated with risk of breast cancer: Findings from the sister study. Int J Cancer 2018; 144:1834-1843. [PMID: 30247761 DOI: 10.1002/ijc.31889] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 08/16/2018] [Accepted: 09/10/2018] [Indexed: 01/22/2023]
Abstract
Dietary factors that contribute to chronic low-grade metabolic acidosis have been linked to breast cancer risk, but to date no epidemiologic study has examined diet-dependent acid load and breast cancer. We used data from 43,570 Sister Study participants who completed a validated food frequency questionnaire at enrollment (2003-2009) and satisfied eligibility criteria. The Potential Renal Acid Load (PRAL) score was used to estimate diet-dependent acid load. Higher scores reflect greater consumption of protein and phosphorus, and lower consumption of potassium, calcium and magnesium. The association between PRAL and breast cancer was evaluated using multivariable Cox proportional hazards regression. We identified 1,614 invasive breast cancers diagnosed at least 1 year after enrollment (mean follow-up, 7.6 years). The highest PRAL quartile, reflecting greater acid-forming potential, was associated with increased risk of breast cancer (HRhighest vs. lowest quartile : 1.21 [95% CI, 1.04-1.41], ptrend = 0.04). The association was more pronounced for estrogen receptor (ER)-negative (HRhighest vs. lowest quartile : 1.67 [95% CI, 1.07-2.61], ptrend = 0.03) and triple-negative breast cancer (HRhighest vs. lowest quartile : 2.20 [95% CI, 1.23-3.95], ptrend = 0.02). Negative PRAL scores, representing consumption of alkaline diets, were associated with decreased risk of ER-negative and triple-negative breast cancer, compared to a PRAL score of 0 representing neutral pH. Higher diet-dependent acid load may be a risk factor for breast cancer while alkaline diets may be protective. Since PRAL scores are positively correlated with meat consumption and negatively correlated with fruit and vegetable intake, results also suggest that diets high in fruits and vegetables and low in meat may be protective against hormone receptor negative breast cancer.
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Affiliation(s)
- Yong-Moon Mark Park
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC
| | - Susan E Steck
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC.,Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC
| | - Teresa T Fung
- Department of Nutrition, Simmons College, Boston, MA.,Department of Nutrition, Harvard TH Chan School of Public Health, Boston, MA
| | - Anwar T Merchant
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC
| | | | | | - Dale P Sandler
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC
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17
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Akter S, Nanri A, Mizoue T, Noda M, Sawada N, Sasazuki S, Tsugane S. Dietary acid load and mortality among Japanese men and women: the Japan Public Health Center-based Prospective Study. Am J Clin Nutr 2017; 106:146-154. [PMID: 28539378 DOI: 10.3945/ajcn.117.152876] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 04/18/2017] [Indexed: 11/14/2022] Open
Abstract
Background: Diet-induced metabolic acidosis has been linked to cardiometabolic abnormalities including hypertension and type 2 diabetes. However, there are limited data on its association with other chronic diseases and mortality.Objective: The present study aimed to examine the association between dietary acid load and total and cause-specific mortality.Design: This study was a large-scale, population-based, prospective cohort study in Japan involving 42,736 men and 49,742 women, aged 45-75 y, who had no history of cancer, stroke, ischemic heart disease (IHD), or chronic liver disease at baseline. Dietary intake was assessed by using a validated 147-item food-frequency questionnaire. Potential renal acid load (PRAL) and net endogenous acid production (NEAP) scores were derived from nutrient intake. Death and cause of death were identified by using the residential registry and death certificates. Cox proportional hazards regression was used to estimate HRs and 95% CIs for total and cause-specific mortality with adjustment for potential confounding variables.Results: During a median follow-up of 16.9 y, 12,993 total deaths occurred. A higher PRAL score was associated with higher total mortality: the multivariable-adjusted HR for total mortality for the highest compared with the lowest quartiles of PRAL scores was 1.13 (95% CI: 1.07, 1.18; P-trend < 0.001). This score was positively associated with mortality from cardiovascular disease (CVD) and particularly from IHD; the HRs (95% CIs) for the highest compared with the lowest quartile of PRAL score were 1.16 (1.06, 1.28) and 1.16 (1.02, 1.33) for CVD and IHD mortality, respectively. There was no association between PRAL score and cancer mortality. Similar associations were observed between NEAP score and total and cause-specific mortality.Conclusion: A high dietary acid load score was associated with a higher risk of total mortality and mortality from CVD, particularly from IHD, in Japanese adults.
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Affiliation(s)
- Shamima Akter
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan;
| | - Akiko Nanri
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Tetsuya Mizoue
- Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Mitsuhiko Noda
- Department of Endocrinology and Diabetes, Saitama Medical University, Saitama, Japan; and
| | - Norie Sawada
- Epidemiology and Prevention Group, Research Center for Cancer Prevention and Screening, National Cancer Center, Tokyo, Japan
| | - Shizuka Sasazuki
- Epidemiology and Prevention Group, Research Center for Cancer Prevention and Screening, National Cancer Center, Tokyo, Japan
| | - Shoichiro Tsugane
- Epidemiology and Prevention Group, Research Center for Cancer Prevention and Screening, National Cancer Center, Tokyo, Japan
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18
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Appel JH, Ren H, Sin MLY, Liao JC, Chae J. Rapid bladder cancer cell detection from clinical urine samples using an ultra-thin silicone membrane. Analyst 2017; 141:652-60. [PMID: 26549051 DOI: 10.1039/c5an01616a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Early detection of initial onset, as well as recurrence, of cancer is paramount for improved patient prognosis and human health. Cancer screening is enhanced by rapid differentiation of cancerous from non-cancerous cells which employs the inherent differences in biophysical properties. Our preliminary testing demonstrates that cell-line derived bladder cancer cells deform our <30 nm silicone membrane within an hour and induce visually distinct wrinkle patterns while cell-line derived non-cancerous cells fail to induce these wrinkle patterns. Herein, we report a platform for the rapid detection of cancerous cells from human clinical urine samples. We performed a blinded study with cells extracted from the urine of human patients suspected to have bladder cancer alongside healthy controls. Wrinkle patterns were induced specifically by the five cancer patient samples within 12 hours and not by the healthy controls. These results were independently validated by the standard diagnostic techniques cystoscopy and cytology. Thus, our ultra-thin membrane approach for cancer diagnosis appears as accurate as standard diagnostic methods while vastly more rapid, less invasive, and requiring limited expertise.
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Affiliation(s)
- Jennie H Appel
- School of Electrical, Computer and Energy Engineering, Arizona State University, USA.
| | - Hao Ren
- School of Electrical, Computer and Energy Engineering, Arizona State University, USA.
| | - Mandy L Y Sin
- Department of Urology, Stanford University School of Medicine, Stanford, USA
| | - Joseph C Liao
- Department of Urology, Stanford University School of Medicine, Stanford, USA
| | - Junseok Chae
- School of Electrical, Computer and Energy Engineering, Arizona State University, USA.
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Abstract
OBJECTIVES To evaluate the evidence for a causal relationship between dietary acid/alkaline and alkaline water for the aetiology and treatment of cancer. DESIGN A systematic review was conducted on published and grey literature separately for randomised intervention and observational studies with either varying acid-base dietary intakes and/or alkaline water with any cancer outcome or for cancer treatment. OUTCOME MEASURES Incidence of cancer and outcomes of cancer treatment. RESULTS 8278 citations were identified, and 252 abstracts were reviewed; 1 study met the inclusion criteria and was included in this systematic review. No randomised trials were located. No studies were located that examined dietary acid or alkaline or alkaline water for cancer treatment. The included study was a cohort study with a low risk of bias. This study revealed no association between the diet acid load with bladder cancer (OR=1.15: 95% CI 0.86 to 1.55, p=0.36). No association was found even among long-term smokers (OR=1.72: 95% CI 0.96 to 3.10, p=0.08). CONCLUSIONS Despite the promotion of the alkaline diet and alkaline water by the media and salespeople, there is almost no actual research to either support or disprove these ideas. This systematic review of the literature revealed a lack of evidence for or against diet acid load and/or alkaline water for the initiation or treatment of cancer. Promotion of alkaline diet and alkaline water to the public for cancer prevention or treatment is not justified.
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Affiliation(s)
- Tanis R Fenton
- Department of Community Health Sciences, O'Brien Institute for Public Health, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
- Nutrition Services, Alberta Health Services, Calgary, Alberta, Canada
| | - Tian Huang
- Nutrition Services, Alberta Health Services, Calgary, Alberta, Canada
- Faculty of Agriculture, Life and Environmental Sciences, Edmonton Clinic Health Academy, University of Alberta, Edmonton, Alberta, Canada
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20
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Prasad S, Tyagi AK, Aggarwal BB. Detection of inflammatory biomarkers in saliva and urine: Potential in diagnosis, prevention, and treatment for chronic diseases. Exp Biol Med (Maywood) 2016; 241:783-99. [PMID: 27013544 DOI: 10.1177/1535370216638770] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Inflammation is a part of the complex biological response of inflammatory cells to harmful stimuli, such as pathogens, irritants, or damaged cells. This inflammation has been linked to several chronic diseases including cancer, atherosclerosis, rheumatoid arthritis, and multiple sclerosis. Major biomarkers of inflammation include tumor necrosis factor, interleukins (IL)-1, IL-6, IL-8, chemokines, cyclooxygenase, 5-lipooxygenase, and C-reactive protein, all of which are regulated by the transcription factor nuclear factor-kappaB. Although examining inflammatory biomarkers in blood is a standard practice, its identification in saliva and/or urine is more convenient and non-invasive. In this review, we aim to (1) discuss the detection of these inflammatory biomarkers in urine and saliva; (2) advantages of using salivary and urinary inflammatory biomarkers over blood, while also weighing on the challenges and/or limitations of their use; (3) examine their role(s) in connection with diagnosis, prevention, treatment, and drug development for several chronic diseases with inflammatory consequences, including cancer; and (4) explore the use of innovative salivary and urine based biosensor strategies that may permit the testing of biomarkers quickly, reliably, and cost-effectively, in a decentralized setting.
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Affiliation(s)
- Sahdeo Prasad
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Amit K Tyagi
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Bharat B Aggarwal
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
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21
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Yang Y, Deng S, Zeng Q, Hu W, Chen T. Highly stable selenadiazole derivatives induce bladder cancer cell apoptosis and inhibit cell migration and invasion through the activation of ROS-mediated signaling pathways. Dalton Trans 2016; 45:18465-18475. [PMID: 27711726 DOI: 10.1039/c6dt02045c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Herein highly stable selenadiazole derivatives were synthesized and found to be able to induce bladder cancer cell apoptosis and inhibit cell migration and invasion through the activation of ROS-mediated pathways.
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Affiliation(s)
- Yahui Yang
- Department of Chemistry
- Jinan University Guangzhou 510632
- China
| | - Shulin Deng
- Department of Chemistry
- Jinan University Guangzhou 510632
- China
| | - Qinsong Zeng
- Department of Urology
- General Hospital of Guangzhou Military Command of PLA
- Guangzhou 510010
- China
| | - Weilie Hu
- Department of Urology
- General Hospital of Guangzhou Military Command of PLA
- Guangzhou 510010
- China
| | - Tianfeng Chen
- Department of Chemistry
- Jinan University Guangzhou 510632
- China
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22
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Wang Y, Li W, Yang Y, Zeng Q, Wong KH, Li X, Chen T. An integrin-targeting nanosystem as a carrier of the selenadiazole derivative to induce ROS-mediated apoptosis in bladder cancer cells, from rational design to action mechanisms. J Mater Chem B 2015; 3:9374-9382. [DOI: 10.1039/c5tb01929j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Herein an integrin-targeting nanosystem is rationally designed and used as a carrier of a selenadiazole derivative to induce ROS-mediated apoptosis in bladder cancer cells.
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Affiliation(s)
- Yifan Wang
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Wenying Li
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Yahui Yang
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Qinsong Zeng
- Department of Urology
- General Hospital of Guangzhou Military Command of PLA
- Guangzhou 510010
- China
| | - Ka-Hing Wong
- Department of Applied Biology and Chemical Technology
- The Hong Kong Polytechnic University
- Kowloon
- Hong Kong
- Shenzhen Key Laboratory of Food Biological Safety Control
| | - Xiaoling Li
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Tianfeng Chen
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
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Woolcott CG, Maskarinec G, Haiman CA, Henderson BE, Kolonel LN. Diabetes and urothelial cancer risk: the Multiethnic Cohort study. Cancer Epidemiol 2011; 35:551-4. [PMID: 21470936 DOI: 10.1016/j.canep.2011.02.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Revised: 02/14/2011] [Accepted: 02/17/2011] [Indexed: 01/22/2023]
Abstract
BACKGROUND It is important to understand the adverse health sequelae that may result from the rising incidence of diabetes. Diabetics may have an increased risk for urothelial cancer but the evidence from prospective studies and ethnically diverse populations is sparse. METHOD We examined this association in the Multiethnic Cohort (MEC) that was conducted in Hawaii and Los Angeles with nearly 186,000 participants in five ethnic groups. Over a median 10.7 years of follow-up, 918 incident cases of urothelial cancer (89% bladder and 11% other urinary tract sites) were identified through tumor registry linkages. RESULTS A self-reported diagnosis of diabetes was associated with an increased risk of urothelial cancer (relative risk=1.25; 95% confidence interval: 1.04-1.50). The association was not explained by body mass index, physical activity, or smoking. There was some suggestion that the risk was higher in women, Whites and African Americans, and past smokers. The risk associated with diabetes for in situ and localized cancer was similar to that for regional and distant cancer. CONCLUSION This study demonstrates that the increased urothelial cancer risk with diabetes in this multiethnic population is very similar to that observed in mostly White or Asian populations. Whether or not the elevated risk is moderated by the degree of control of the hyperglycemia associated with diabetes will need to be determined in future studies.
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Affiliation(s)
- Christy G Woolcott
- Perinatal Epidemiology Research Unit, Department of Obstetrics & Gynecology, Dalhousie University, Halifax, NS, Canada
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Alguacil J, Kogevinas M, Silverman DT, Malats N, Real FX, García-Closas M, Tardón A, Rivas M, Torà M, García-Closas R, Serra C, Carrato A, Pfeiffer RM, Fortuny J, Samanic C, Rothman N. Urinary pH, cigarette smoking and bladder cancer risk. Carcinogenesis 2011; 32:843-7. [PMID: 21402590 DOI: 10.1093/carcin/bgr048] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Glucuronide conjugates of 4-aminobiphenyl and its N-hydroxy metabolite can be rapidly hydrolyzed in acidic urine to undergo further metabolic activation and form DNA adducts in the urothelium. We conducted a large multicenter case-control study in Spain to explore the etiology of bladder cancer and evaluated the association between urine pH and bladder cancer risk, alone and in combination with cigarette smoking. In total, 712 incident urothelial cell carcinoma cases and 611 hospital controls directly measured their urine pH with dipsticks twice a day (first void in the morning and early in the evening) during four consecutive days 2 weeks after hospital discharge. We found that a consistently acidic urine pH ≤6.0 was associated with an increased risk of bladder cancer [odds ratio (OR) = 1.5, 95% confidence interval (CI): 1.2-1.9] compared with all other subjects. Furthermore, risk estimates for smoking intensity and risk of bladder cancer among current smokers tended to be higher for those with a consistently acidic urine (OR = 8.8, 11.5 and 23.8) compared with those without (OR = 4.3, 7.7 and 5.8, respectively, for 1-19, 20-29 and 30+ cigarettes per day; P(interaction) for 30+ cigarettes per day = 0.024). These results suggest that urine pH, which is determined primarily by diet and body surface area, may be an important modifier of smoking and risk of bladder cancer.
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Affiliation(s)
- Juan Alguacil
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Department of Health and Human Services, Bethesda, MD 20892, USA.
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Ormazabal V, Zuñiga FA, Escobar E, Aylwin C, Salas-Burgos A, Godoy A, Reyes AM, Vera JC, Rivas CI. Histidine residues in the Na+-coupled ascorbic acid transporter-2 (SVCT2) are central regulators of SVCT2 function, modulating pH sensitivity, transporter kinetics, Na+ cooperativity, conformational stability, and subcellular localization. J Biol Chem 2010; 285:36471-85. [PMID: 20843809 DOI: 10.1074/jbc.m110.155630] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Na(+)-coupled ascorbic acid transporter-2 (SVCT2) activity is impaired at acid pH, but little is known about the molecular determinants that define the transporter pH sensitivity. SVCT2 contains six histidine residues in its primary sequence, three of which are exofacial in the transporter secondary structure model. We used site-directed mutagenesis and treatment with diethylpyrocarbonate to identify histidine residues responsible for SVCT2 pH sensitivity. We conclude that five histidine residues, His(109), His(203), His(206), His(269), and His(413), are central regulators of SVCT2 function, participating to different degrees in modulating pH sensitivity, transporter kinetics, Na(+) cooperativity, conformational stability, and subcellular localization. Our results are compatible with a model in which (i) a single exofacial histidine residue, His(413), localized in the exofacial loop IV that connects transmembrane helices VII-VIII defines the pH sensitivity of SVCT2 through a mechanism involving a marked attenuation of the activation by Na(+) and loss of Na(+) cooperativity, which leads to a decreased V(max) without altering the transport K(m); (ii) exofacial histidine residues His(203), His(206), and His(413) may be involved in maintaining a functional interaction between exofacial loops II and IV and influence the general folding of the transporter; (iii) histidines 203, 206, 269, and 413 affect the transporter kinetics by modulating the apparent transport K(m); and (iv) histidine 109, localized at the center of transmembrane helix I, might be fundamental for the interaction of SVCT2 with the transported substrate ascorbic acid. Thus, histidine residues are central regulators of SVCT2 function.
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Affiliation(s)
- Valeska Ormazabal
- Departamento de Fisiopatología, Facultad de Ciencias Biológicas, Universidad de Concepción, Barrio Universitario, Casilla 160C, Concepción, Chile
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Abstract
Bladder cancer (Bc) with an incidence of 8.6% ranks fourth in males and with an incidence of 3.5% ranks eighth in females in Germany. The study of Cole demonstrating that coffee drinking poses a risk for developing Bc raised interest in primary prevention. In the meantime, however, 42 case-control studies could disprove this finding. Cigarette smoking raises the Bc risk threefold. Responsible are among others arylamines which are activated in the liver, but also detoxified. A genetically caused lack of transferases is responsible for every third Bc. Another risk factor is contributed by permanent hair dyes. Similarly to smoking, an arylamine is taken up by the body and has to be detoxified by transferases in the liver and skin. Furthermore, a chronic urinary tract infection may be related to Bc. Thus, the best prevention is the reduction of risk factors.A high fluid intake--irrespective of its kind--reduces the Bc risk by approximately 50%. Particularly smokers should realize that they can lower their risk of developing Bc by almost 70% with a high fluid intake. A connection between alcohol consumption and Bc development has never been shown. Vitamins A, B, and C were extensively investigated in epidemiological studies. Usefulness for primary prevention of Bc was not convincingly demonstrated. Interestingly, folic acid-containing food may reduce the Bc risk for smokers. Fruits and vegetables possess only a weak preventive efficacy. However, copious fruit consumption may reduce the risk for smokers by almost 50%. The trace element selenium does not possess a proven protection; however, it has been shown that persons with a high selenium plasma level have a lower incidence of Bc. Among probiotics yogurt containing Lactobacillus casei is particularly useful in smokers according to one study. Finally, the preventive action of NSAIDs is controversial. Surprisingly, users of analgetics have a low incidence of Bc.
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Affiliation(s)
- J E Altwein
- Chirurgische Klinik München-Bogenhausen, Denningerstrasse 44, 81679 Munich, Germany.
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