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Kovalenko E, Vergasova E, Shoshina O, Popov I, Ilinskaya A, Kim A, Plotnikov N, Barenbaum I, Elmuratov A, Ilinsky V, Volokh O, Rakitko A. Lactase deficiency in Russia: multiethnic genetic study. Eur J Clin Nutr 2023:10.1038/s41430-023-01294-8. [PMID: 37311868 DOI: 10.1038/s41430-023-01294-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 05/15/2023] [Accepted: 05/24/2023] [Indexed: 06/15/2023]
Abstract
BACKGROUND Lactase persistence-the ability to digest lactose through adulthood-is closely related to evolutionary adaptations and has affected many populations since the beginning of cattle breeding. Nevertheless, the contrast initial phenotype, lactase non-persistence or adult lactase deficiency, is still observed in large numbers of people worldwide. METHODS We performed a multiethnic genetic study of lactase deficiency on 24,439 people, the largest in Russia to date. The percent of each population group was estimated according to the local ancestry inference results. Additionally, we calculated frequencies of rs4988235 GG genotype in Russian regions using the information of current location and birthplace data from the client's questionnaire. RESULTS The attained results show that among all studied population groups, the frequency of GG genotype in rs4988235 is higher than the average in the European populations. In particular, the prevalence of lactase deficiency genotype in the East Slavs group was 42.8% (95% CI: 42.1-43.4%). We also investigated the regional prevalence of lactase deficiency based on the current place of residence. CONCLUSIONS Our study emphasizes the significance of genetic testing for diagnostics, i.e., specifically for lactose intolerance parameter, as well as the scale of the problem of lactase deficiency in Russia which needs to be addressed by the healthcare and food sectors.
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Affiliation(s)
| | | | - Olesya Shoshina
- Lomonosov Moscow State University, Faculty of Biology, Moscow, Russia
| | | | | | | | | | | | | | | | - Olesya Volokh
- Lomonosov Moscow State University, Faculty of Biology, Moscow, Russia
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Li A, Zheng J, Han X, Jiang Z, Yang B, Yang S, Zhou W, Li C, Sun M. Health implication of lactose intolerance and updates on its dietary management. Int Dairy J 2023. [DOI: 10.1016/j.idairyj.2023.105608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Schnedl WJ, Meier-Allard N, Michaelis S, Lackner S, Enko D, Mangge H, Holasek SJ. Serum Diamine Oxidase Values, Indicating Histamine Intolerance, Influence Lactose Tolerance Breath Test Results. Nutrients 2022; 14:nu14102026. [PMID: 35631167 PMCID: PMC9146026 DOI: 10.3390/nu14102026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/12/2022] [Accepted: 05/09/2022] [Indexed: 12/12/2022] Open
Abstract
Lactose intolerance (LIT) is one of the major causes of irritable bowel syndrome (IBS) spectrum complaints. Differences in inadequate lactose digestion are described as various LIT phenotypes with basically unknown pathophysiology. In LIT patients, we retrospectively assessed the effect of histamine intolerance (HIT) on expiratory hydrogen (H2) during H2 lactose breath tests. In a retrospective evaluation of charts from 402 LIT patients, 200 patients were identified as having only LIT. The other 202 LIT patients were found to additionally have diamine oxidase (DAO) values of <10 U/mL, which indicates histamine intolerance (HIT). To identify HIT, standardized questionnaires, low serum DAO values and responses to a histamine-reduced diet were used. Patients were separated into three diagnostic groups according to the result of H2 breath tests: (1) LIT, with an H2 increase of >20 parts per million (ppm), but a blood glucose (BG) increase of >20 mg/dL, (2) LIT with an H2 increase of 20 ppm in combination with a BG increase of <20 mg/dL, and (3) LIT with an exhaled H2 increase of <20 ppm and BG increase of <20 mg/dL. Pairwise comparison with the Kruskal Wallis test was used to compare the areas under the curve (AUC) of LIT and LIT with HIT patients. Exhaled H2 values were significantly higher in H2 > 20 ppm and BG < 20 mg/dL patients with LIT and HIT (p = 0.007). This diagnostic group also showed a significant higher number of patients (p = 0.012) and a significant higher number of patients with gastrointestinal (GI) symptoms during H2 breath tests (p < 0.001). Therefore, low serum DAO values, indicating HIT, influence results of lactose tolerance breath tests.
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Affiliation(s)
- Wolfgang J. Schnedl
- Practice for General Internal Medicine, Dr. Theodor Körnerstrasse 19b, 8600 Bruck an der Mur, Austria
- Correspondence: ; Tel.: +43-3612-55833; Fax: +43-3612-55833-22
| | - Nathalie Meier-Allard
- Division of Immunology and Pathophysiology, Otto Loewi Research Center, Medical University of Graz, Heinrichstrasse 31a, 8010 Graz, Austria; (N.M.-A.); (S.L.); (S.J.H.)
| | - Simon Michaelis
- Institute of Clinical Chemistry, Laboratory Medicine, Hospital Hochsteiermark, Vordernberger Straße 42, 8700 Leoben, Austria; (S.M.); (D.E.)
| | - Sonja Lackner
- Division of Immunology and Pathophysiology, Otto Loewi Research Center, Medical University of Graz, Heinrichstrasse 31a, 8010 Graz, Austria; (N.M.-A.); (S.L.); (S.J.H.)
| | - Dietmar Enko
- Institute of Clinical Chemistry, Laboratory Medicine, Hospital Hochsteiermark, Vordernberger Straße 42, 8700 Leoben, Austria; (S.M.); (D.E.)
- Clinical Institute of Medical, Chemical Laboratory Diagnosis, Medical University of Graz, Auenbruggerplatz 30, 8036 Graz, Austria;
| | - Harald Mangge
- Clinical Institute of Medical, Chemical Laboratory Diagnosis, Medical University of Graz, Auenbruggerplatz 30, 8036 Graz, Austria;
| | - Sandra J. Holasek
- Division of Immunology and Pathophysiology, Otto Loewi Research Center, Medical University of Graz, Heinrichstrasse 31a, 8010 Graz, Austria; (N.M.-A.); (S.L.); (S.J.H.)
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Porzi M, Burton-Pimentel KJ, Walther B, Vergères G. Development of Personalized Nutrition: Applications in Lactose Intolerance Diagnosis and Management. Nutrients 2021; 13:nu13051503. [PMID: 33946892 PMCID: PMC8145768 DOI: 10.3390/nu13051503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/22/2021] [Accepted: 04/27/2021] [Indexed: 12/23/2022] Open
Abstract
Recent discoveries in the “omics” field and the growing focus on preventive health have opened new avenues for personalized nutrition (PN), which is becoming an important theme in the strategic plans of organizations that are active in healthcare, food, and nutrition research. PN holds great potential for individual health optimization, disease management, public health interventions, and product innovation. However, there are still multiple challenges to overcome before PN can be truly embraced by the public and healthcare stakeholders. The diagnosis and management of lactose intolerance (LI), a common condition with a strong inter-individual component, is explored as an interesting example for the potential role of these technologies and the challenges of PN. From the development of genetic and metabolomic LI diagnostic tests that can be carried out in the home, to advances in the understanding of LI pathology and individualized treatment optimization, PN in LI care has shown substantial progress. However, there are still many research gaps to address, including the understanding of epigenetic regulation of lactase expression and how lactose is metabolized by the gut microbiota, in order to achieve better LI detection and effective therapeutic interventions to reverse the potential health consequences of LI.
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Affiliation(s)
- Millie Porzi
- Laboratory of Human Nutrition, Department of Health Sciences and Technology, ETH Zurich, 8092 Zurich, Switzerland;
| | - Kathryn J. Burton-Pimentel
- Agroscope, Federal Department of Economic Affairs, Education and Research EAER, 3003 Bern, Switzerland; (K.J.B.-P.); (B.W.)
| | - Barbara Walther
- Agroscope, Federal Department of Economic Affairs, Education and Research EAER, 3003 Bern, Switzerland; (K.J.B.-P.); (B.W.)
| | - Guy Vergères
- Agroscope, Federal Department of Economic Affairs, Education and Research EAER, 3003 Bern, Switzerland; (K.J.B.-P.); (B.W.)
- Correspondence: ; Tel.: +41-58-463-8154
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Shrestha A, Samuelsson LM, Sharma P, Day L, Cameron-Smith D, Milan AM. Comparing Response of Sheep and Cow Milk on Acute Digestive Comfort and Lactose Malabsorption: A Randomized Controlled Trial in Female Dairy Avoiders. Front Nutr 2021; 8:603816. [PMID: 33659266 PMCID: PMC7917135 DOI: 10.3389/fnut.2021.603816] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 01/22/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Sheep milk (SM) is a possible alternate dairy source for those who experience digestive symptoms with cow milk (CM). While both the milks contain lactose, one of the causes for self-reported intolerance to CM, the composition of SM and CM also differs across proteins and fats, which have been shown to impact digestive processes. Objective: To compare the acute digestive comfort and lactose malabsorption of SM to CM in female dairy avoiders. Method: In a double-blinded, randomized cross over trial, 30 dairy-avoiding females (aged 20-30 years) drank 650 mL of SM or CM (each reconstituted from spray dried powder) following an overnight fast, on two separate occasions at least 1 week apart. Blood samples were collected for glucose and insulin assessment, and single nucleotide polymorphisms of the lactase (LCT) gene (C/T13910 and G/A22018). Breath H2 and visual analog scale (VAS) digestive symptom scores were recorded at fasting and regular intervals over 4 h after ingestion. Results: Eighty percentage of study participants were lactase non-persistent (LNP; CC13910 and GG22018 genotype). Digestive symptoms, including abdominal cramps, distension, rumbling, bloating, belching, diarrhea, flatulence, vomiting, and nausea, were similar in response to SM and CM ingestion (milk × time, P > 0.05). Breath H2 was greater after CM than SM (72 ± 10 vs. 43 ± 6 ppm at 240 min, P < 0.001), which may be due to greater lactose content in CM (33 vs. 25 g). Accordingly, when corrected for the lactose content breath H2 did not differ between the two milks. The response remained similar when analyzed in the LNP subset alone (n = 20). Conclusions: Despite a higher energy and nutrient content, SM did not increase adverse digestive symptoms after ingestion, relative to CM, although there was a reduced breath H2 response, which could be attributed to the lower lactose content in SM. The tolerability of SM should be explored in populations without lactose intolerance for whom underlying trigger for intolerance is unknown.
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Affiliation(s)
- Aahana Shrestha
- The Liggins Institute, The University of Auckland, Auckland, New Zealand.,Riddet Institute, Palmerston North, New Zealand
| | | | - Pankaja Sharma
- The Liggins Institute, The University of Auckland, Auckland, New Zealand.,Riddet Institute, Palmerston North, New Zealand
| | - Li Day
- AgResearch Ltd., Te Ohu Rangahau Kai, Palmerston North, New Zealand
| | - David Cameron-Smith
- The Liggins Institute, The University of Auckland, Auckland, New Zealand.,Riddet Institute, Palmerston North, New Zealand.,Singapore Institute for Clinical Sciences, Agency for Science, Technology, and Research, Singapore, Singapore
| | - Amber M Milan
- The Liggins Institute, The University of Auckland, Auckland, New Zealand.,AgResearch Ltd., Te Ohu Rangahau Kai, Palmerston North, New Zealand
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