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1

A potent allelopathic substance in cucumber plants and allelopathy of cucumber

100%
Kato-Noguchi H., Le Thi H., Sasaki H., Suenaga K.
Acta Physiologiae Plantarum
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2012
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tom 34
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nr 5
A potent growth inhibitory substance was isolated from an aqueous methanol extract of cucumber (Cucumis sativus L. cv. Phung Tuong) plants and determined as (2S)-2,3-dihydro-2α-(4-hydroxy-3-methoxyphenyl)-7-methoxy-5-(1,2,3-trihydroxypropyl)benzofuran-3β-methanol (sisymbrifolin) by spectral data. Sisymbrifolin inhibited the growth of cress (Lepidium sativum) and Echinochloa crusgalli seedlings at concentrations greater than 3 µM. Concentration of sisymbrifolin in the cucumber plants was the greatest among four growth inhibitory substances, (S)-2-benzoyloxy-3-phenyl-1-propanol, 9-hydroxy-4,7-megastigmadien-9-one, (6S,7E,9S)-6,9,10-trihydroxy-4,7-megastigmadien-3-one, and sisymbrifolin found in the cucumber, whereas growth inhibitory activity of 9-hydroxy-4,7-megastigmadien-9-one against cress and E. crus-galli was the greatest. Total activities of these substances (concentration of the substance/concentration required 50 % growth inhibition) were 14.4, 13.2, 8.5 and 10.7 for (S)-2-benzoyloxy-3-phenyl-1-propanol, 9-hydroxy-4,7-megastigmadien-9-one,(6S,7E,9S)-6,9,10-trihydroxy-4,7-megastigmadien-3-one and sisymbrifolin, respectively. These total activities were about 100-fold greater than those of phenolic acids, which are often mentioned as putative allelochemicals of plants. Thus, these substances may play important roles in the allelopathy of cucumber plants through the growth inhibition of neighboring plant species.
2

A human case of hypoplastic external iliac artery and its collateral pathways

100%
Kawashima T., Sato K., Sasaki H.
Folia Morphologica
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2006
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tom 65
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nr 2
157-160
During a student dissection course held at the Tokyo Women’s Medical University, in a 91-year-old human female cadaver we encountered a very rare case of a hypoplastic right external iliac artery. It continued into the normal femoral artery by anastomoses formed with the enlarged obturator and deep circumflex iliac arteries. While the obturator artery originated from the anterior branch of the internal iliac artery, the deep circumflex iliac artery was supplied by the iliolumbar artery, which in turn formed a common stem to arise from the lateral sacral artery Whether the hypoplastic external iliac artery arose developmentally or secondarily could not be discerned, but the case nevertheless provides important information regarding the arterial anlage between the pelvis and lower extremity. The case is also clinically significant in that it indicates a possible collateral pathway if the external iliac artery is occluded or ischaemia.
3

Anatomical relationships between the superficial brachial arteries and the brachial plexus in humans, and their morphological significance

100%
Kawashima T., Yoshitomi S., Sasaki H.
Folia Morphologica
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2004
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tom 63
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nr 4
Since the significance of a superficial subscapular artery was reported by Yamada [22], macroscopic anatomical studies of axillary artery morphogenesis have been conducted by many authors. Notably, Japanese anatomists have reported important and groundbreaking theories on the morphogenesis of normal and aberrant axillary arteries. These include a description of the superficial brachial artery (BS) and Adachi’s brachial plexus (AxC) by Chiba [6–7], the possible routes of the axillary artery by Aizawa et al. [3] and the morphological significance of the inferior pectoral artery (Pi) by Kodama et al. [16] and the deep axillary artery by Honma et al. [10, 11]. We have also identified 11 BS among 322 sides of 161 adult human cadavers. We traced the BS with the AxC in 1 case, the development of a superficial subscapular artery in 3 cases, the development of a Pi in 3 cases, an unclear situation in 3 cases and a lateral median superficial brachial artery (BSML) in 1 case. Moreover, we carried out a fibre analysis of the BSML in order to understand the morphology more completely. Our findings are discussed herein. We have therefore described our cases and compare them with references, presenting gross anatomical data on their morphogenesis in an effort to unify experimental embryological data.
4

Lymphatic vessels around the uterus: D2-40 (podoplandin) immunohistochemistry using elderly cadavers

76%
Sasaki H., Jin Z. W., Liu Y. L., Jin Y., Murakami G., Abe S.-I.
Folia Morphologica
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2016
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tom 75
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nr 2
Using D2-40 immunohistochemistry, we examined the morphology of lymphatic vessels (LVs) in, along and around the uterus of 10 donated female cadavers (mean age, 85 years). All these women had 1 or 2 children with vaginal delivery, but the other obstetrics information was unknown. When compared with the bladder, vagina and the subperitoneal tissue, the percentage area of LVs in a 3 × 2 mm square including the hot spot was extremely high along the uterine artery and superficial uterine vein, in spite of the silent physiology of the elderly uterus. Notably, the LVs along the uterine artery and superficial uterine vein were highly dilated and embedded in the tight connective tissue around the artery and vein. In contrast, the LVs were separated from the artery and vein in the so-called vesico- -uterine ligament. Thus, surgical separation of the LVs from the artery and vein, i.e., skeletonisation, appears very difficult along the uterine artery and superficial uterine vein. This may become a major factor limiting the future application of robot-assisted surgery for uterine cancers. (Folia Morphol 2016; 75, 2: 232–239)
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