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Showing 1 to 12 of 31 entries
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Interpreting stem diameter growth during drought of Scots Pine

Theoretical frames STEM

BERINGER F, Chan T, Hölttä T.
GSID: zMuo0RT80pgJ
T Chan, T Hölttä, F BERINGER… - Proceedings of the …, 2012 - nordicadaptation2012.net

… • Examining growth from stem diameter changes enables … are explained by the cohesiontension theory of the xylem and the … Stem diameter sensor on the frame of tree (left) and sampled …

In Crohn's Disease, Anti-TNF-α Treatment Changes the Balance between Mucosal IL-17, FOXP3, and CD4 Cells.

ISRN gastroenterology

Hölttä V, Sipponen T, Westerholm-Ormio M, Salo HM, Kolho KL, Färkkilä M, Savilahti E, Vaarala O, Klemetti P.
PMID: 22778976
ISRN Gastroenterol. 2012;2012:505432. doi: 10.5402/2012/505432. Epub 2012 Jun 14.

Aim. In Crohn's disease (CD), anti-TNF-α treatment is a potent medication. We aimed to characterize the effect of anti-TNF-α treatment on T effector and regulatory cells. Material and Methods. We studied T-effector and regulatory cells on cellular and mRNA...

Bark Transpiration Rates Can Reach Needle Transpiration Rates Under Dry Conditions in a Semi-arid Forest.

Frontiers in plant science

Lintunen A, Preisler Y, Oz I, Yakir D, Vesala T, Hölttä T.
PMID: 34987535
Front Plant Sci. 2021 Dec 20;12:790684. doi: 10.3389/fpls.2021.790684. eCollection 2021.

Drought can cause tree mortality through hydraulic failure and carbon starvation. To prevent excess water loss, plants typically close their stomata before massive embolism formation occurs. However, unregulated water loss through leaf cuticles and bark continues after stomatal closure....

Weaker Light Response, Lower Stomatal Conductance and Structural Changes in Old Boreal Conifers Implied by a Bayesian Hierarchical Model.

Frontiers in plant science

Liu C, Hölttä T, Tian X, Berninger F, Mäkelä A.
PMID: 33240299
Front Plant Sci. 2020 Nov 06;11:579319. doi: 10.3389/fpls.2020.579319. eCollection 2020.

Age-related effects on whole-tree hydraulics are one of the key challenges to better predicting the production and growth of old-growth forests. Previous models have described the optimal state of stomatal behaviour, and field studies have implied on age/size-induced trends...

Exploring optimal stomatal control under alternative hypotheses for the regulation of plant sources and sinks.

The New phytologist

Dewar R, Hölttä T, Salmon Y.
PMID: 34637543
New Phytol. 2021 Oct 12; doi: 10.1111/nph.17795. Epub 2021 Oct 12.

Experimental evidence that nonstomatal limitations to photosynthesis (NSLs) correlate with leaf sugar and/or leaf water status suggests the possibility that stomata adjust to maximise photosynthesis through a trade-off between leaf CO

Publisher Correction: Management of congenital nephrotic syndrome: consensus recommendations of the ERKNet-ESPN Working Group.

Nature reviews. Nephrology

Boyer O, Schaefer F, Haffner D, Bockenhauer D, Hölttä T, Bérody S, Webb H, Heselden M, Lipska-Ziętkiewicz BS, Ozaltin F, Levtchenko E, Vivarelli M.
PMID: 33941901
Nat Rev Nephrol. 2021 Jun;17(6):434. doi: 10.1038/s41581-021-00431-5.

No abstract available.

Prevalence of tomato and cucumber sensitization among greenhouse workers.

The journal of allergy and clinical immunology. In practice

Suojalehto H, Hölttä P, Lindström I, Suomela S.
PMID: 34626860
J Allergy Clin Immunol Pract. 2021 Oct 06; doi: 10.1016/j.jaip.2021.09.038. Epub 2021 Oct 06.

No abstract available.

Divergent roles of lysyl oxidase family members in ornithine decarboxylase- and RAS-transformed mouse fibroblasts and human melanoma cells.

Oncotarget

Kielosto M, Eriksson J, Nummela P, Yin M, Hölttä E.
PMID: 30701028
Oncotarget. 2018 Dec 28;9(102):37733-37752. doi: 10.18632/oncotarget.26508. eCollection 2018 Dec 28.

We have previously shown that proto-oncoprotein c-Jun is activated in ornithine decarboxylase (ODC)- and RAS-transformed mouse fibroblasts, and that the transformed morphology of these cells can be reversed by expressing the transactivation domain deletion mutant of c-Jun (TAM67). Here,...

Scaling of xylem and phloem transport capacity and resource usage with tree size.

Frontiers in plant science

Hölttä T, Kurppa M, Nikinmaa E.
PMID: 24367373
Front Plant Sci. 2013 Dec 05;4:496. doi: 10.3389/fpls.2013.00496. eCollection 2013.

Xylem and phloem need to maintain steady transport rates of water and carbohydrates to match the exchange rates of these compounds at the leaves. A major proportion of the carbon and nitrogen assimilated by a tree is allocated to...

Does the magic of BERT apply to medical code assignment? A quantitative study.

Computers in biology and medicine

Ji S, Hölttä M, Marttinen P.
PMID: 34739971
Comput Biol Med. 2021 Dec;139:104998. doi: 10.1016/j.compbiomed.2021.104998. Epub 2021 Oct 30.

Unsupervised pretraining is an integral part of many natural language processing systems, and transfer learning with language models has achieved remarkable results in downstream tasks. In the clinical application of medical code assignment, diagnosis and procedure codes are inferred...

Seipin localizes at endoplasmic-reticulum-mitochondria contact sites to control mitochondrial calcium import and metabolism in adipocytes.

Cell reports

Combot Y, Salo VT, Chadeuf G, Hölttä M, Ven K, Pulli I, Ducheix S, Pecqueur C, Renoult O, Lak B, Li S, Karhinen L, Belevich I, Le May C, Rieusset J, Le Lay S, Croyal M, Tayeb KS, Vihinen H, Jokitalo E, Törnquist K, Vigouroux C, Cariou B, Magré J, Larhlimi A, Ikonen E, Prieur X.
PMID: 35021082
Cell Rep. 2022 Jan 11;38(2):110213. doi: 10.1016/j.celrep.2021.110213.

Deficiency of the endoplasmic reticulum (ER) protein seipin results in generalized lipodystrophy by incompletely understood mechanisms. Here, we report mitochondrial abnormalities in seipin-deficient patient cells. A subset of seipin is enriched at ER-mitochondria contact sites (MAMs) in human and...

Dynamic Surface Tension Enhances the Stability of Nanobubbles in Xylem Sap.

Frontiers in plant science

Ingram S, Salmon Y, Lintunen A, Hölttä T, Vesala T, Vehkamäki H.
PMID: 34975934
Front Plant Sci. 2021 Dec 16;12:732701. doi: 10.3389/fpls.2021.732701. eCollection 2021.

Air seeded nanobubbles have recently been observed within tree sap under negative pressure. They are stabilized by an as yet unidentified process, although some embolize their vessels in extreme circumstances. Current literature suggests that a varying surface tension helps...

Showing 1 to 12 of 31 entries