Tsukasa Inaoka
Biographic Data
| ID | 4146064 |
|---|---|
| NAME | Tsukasa Inaoka |
| GIVEN NAMES | Tsukasa |
| FAMILY NAME | Inaoka |
| SIGNATURE | INAOKA T |
| AFFILIATIONS | Saga University |
| VERIFIED | No |
| TOTAL WORKS | 26 |
| TOTAL CITATIONS | 8 |
| AUTHOR COUNT | 26 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1982 |
| LATEST PUBLICATION YEAR | 2018 |
| H-INDEX | 2 |
Association study of CREBRF missense variant (rs373863828
The rs373863828-A allele may not directly affect the level of serum HDL-cholesterol independent of BMI. To confirm the present findings, association studies with large sample sizes and functional analyses are required
Reduced morning cortisol concentration in saliva was associated with obesity
OBJECTIVES: This study investigated morning salivary cortisol concentration in relation to total body fat composition among community-dwelling Papua New Guinean adults. METHODS: In addition to demographic and anthropometric measurements, saliva was collected in a single morning from 478 residents in Eastern Highlands Province and Madang Province. RESULTS: After adjusting for age, region, and occupation, the morning salivary cortisol concentration…
DRD4 VNTR polymorphism in Oceanic populations
To study the origin of Polynesians and the gene flow from Polynesian ancestors to indigenous Melanesians, a 48-bp variable number of tandem repeats (VNTR) in exon 3 of the dopamine D4 receptor (DRD4) gene was investigated for six Austronesian (AN)-speaking populations—two in Tonga (Nuku’alofa and Ha’apai), three in Solomon Islands (Munda, Paradise, and Rawaki, of whom Rawaki was a Micronesian migrant group), and one in Papua New Guinea (Balopa), …
HLA-DRB1 polymorphism on Ha'ano island of the Kingdom of Tonga
HLA-DRB1 polymorphism was investigated by molecular DNA-based typing in 37 Tongans living on Ha’ano island of the Ha’apai group. The predominant HLA-DRB1 alleles were DRB1*0901 (20.3%) and DRB1*0403 (18.9%). A principal component analysis of the DRB1 allele frequencies discriminated between the Polynesians and other Oceanian populations, including Melanesians, Micronesians, and Australian Aborigines. Both present and previous studies have shown t…
Brief communication
Archaeological, linguistic, and genetic studies show that Austronesian (AN)-speaking Polynesian ancestors came from Asia/Taiwan to the Bismarck Archipelago in Near Oceania more than 3,600 years ago, and then expanded into Remote Oceania. However, it remains unclear whether they extensively mixed with indigenous Melanesians who had populated the Bismarck Archipelago before their arrival. To examine the extent of admixture between Polynesian ancest…
No difference in serum leptin concentrations between urban-dwelling Austronesians and Non-Austronesians in Papua New Guinea
Pacific Islands populations can be broadly divided into Austronesians (AN) and Non-Austronesians (NAN); obesity and type 2 diabetes are prevalent in the former, although leptin levels in both groups have seldom been investigated. Thirty-seven (20 male and 17 female) adult pairs, matched by age and percent body fat, from AN-speaking Balopa and NAN-speaking Huli, all of whom migrated to settle in Port Moresby, the capital of Papua New Guinea, were …
Anthropometry of 5–19-year-old Tongan children with special interest in the high prevalence of obesity among adolescent girls
Among Tongan adolescents, obesity prevalence in girls was much higher than in boys, in association with fat accumulation in the former
Gender Difference in Daily Time and Space Use Among Bangladeshi Villagers Under Arsenic Hazard
The compact spot-check method was applied to elucidate the daily time and space use patterns of 121 adults from a Bangladeshi village in which the authors had previously found more skin manifestations due to arsenic poisoning in males than females. The analysis of 2178 spot-check data, which were obtained over a net period of 2 days, highlighted that farming and cash-earning activities were almost exclusively conducted by males. This is probably …
HLA-DRB1 Polymorphism of Balopa Islanders in Papua New Guinea
Perelik, Solang, and Mouk villages are located in Balopa islands of Papua New Guinea (PNG). It is known that languages spoken in Balopa belong to the same family of Austronesian languages, but the language of Mouk is different from others at a sub-family level. Most of Balopa islanders have subsisted mainly on horticulture and reef fishing, while Mouk villagers have depended on fishing and trading. In order to investigate the genetic similarities…
Cardiovascular risk factors of migrants in Port Moresby from the highlands and island villages, Papua New Guinea
This study examined cardiovascular disease (CVD) risk factors, i.e., obesity, blood pressures, and serum lipoproteins and apoproteins, in relation to sociocultural characteristics in two rural-urban migrant populations (n = 173 adult males and females) in Port Moresby, the capital of Papua New Guinea. Tari migrants from the highlands and Balopa migrants from the islands differ genetically. More importantly, the lifestyle of the latter is more Wes…
Stable carbon and nitrogen isotopic composition of diet and hair of Gidra‐speaking Papuans
The carbon and nitrogen stable isotopic composition of the scalp hair and diet of Gidra-speaking people in four villages in Papua New Guinea is presented. The isotopic composition of hair was measured, while that of the diet was estimated from food consumption survey data and the measured isotopic composition and protein and carbohydrate contents of food items. The average isotopic ratios of the hair samples and of the diet varied among the four …
Stable carbon and nitrogen isotopic composition of diet and hair of Gidra-speaking Papuans
The carbon and nitrogen stable isotopic composition of the scalp hair and diet of Gidra-speaking people in four villages in Papua New Guinea is presented. The isotopic composition of hair was measured, while that of the diet was estimated from food consumption survey data and the measured isotopic composition and protein and carbohydrate contents of food items. The average isotopic ratios of the hair samples and of the diet varied among the four …
Long-term subsistence adaptation to the diversified Papua New Guinea environment
Health and Survival in Modernizing Papua New Guinea Societies
In developed countries, deaths from infectious diseases have decreased and those from chronic diseases have increased with modernization. In many developing countries which are undergoing rapid modernization, these changes have been accelerated, with marked variation from population to population. A typical pattern is observed in the risks of chronic diseases, like cardiovascular disorders and diabetic mellitus, which are closely associated with …
Evaluation of Nutritional Adaptation in the Field
Biochemical analyses of urine specimens, which can be collected more easily than blood specimens in the field, provide information on the nutritional status of the subjects with regard to proteins and micronutrients. In particular, ingested protein passes through a body nitrogen pool and is excreted mostly into urine in the form of urea nitrogen. According to a newly developed filter paper method, in which a small amount of urine specimen (100-12…
Serum mineral and trace element concentrations in the Gidra of lowland Papua new Guinea
Serum concentrations of 11 elements (Na, Mg, P, S, K, Ca, Fe, Cu, Zn, Sr and Se) in the adult populations of the Gidra in lowland Papua New Guinea were measured. The marked characteristic of the element profile in the Gidra was higher Cu and slightly lower Zn concentrations than those in developed countries. Zinc nutriture of the Gidra was judged to be marginally deficient, presumably because of their high intake of crude fiber and Fe, which are …
Carbon and nitrogen isotopic characterization for Papua New Guinea foods
Stable carbon and nitrogen isotope ratios of the animal and plant food of the Gidra, who inhabit lowland Papua New Guinea and subsist mainly on hunting, gathering and horticulture, were measured to characterize the nutritional input of carbon and nitrogen of the Gidra. All the staple plant foods of the Gidra, such as sago and tuberous crops, were classified as C3 plants from their 13C/12C ratios (δ13C). The δ13C of the terrestrial mammals varied …
Dietary selenium intake of the Gidra, Papua New Guinea
Selenium (Se) concentrations in the food of the Gidra‐speaking people of Papua New Guinea were measured by fluorometry. Animal foods contained Se in larger concentrations than plant foods. Animal foods of aquatic origin contained more Se than those of terrestrial origin. Stepwise multiple regression analysis revealed an association between Se and the animal's mercury content. Se concentrations in rice and wheat flour, which were imported from out…
Hair element concentrations of the Gidra in lowland Papua
Concentrations of 11 elements (Na, Mg, Al, P, K, Ca, Mn, Fe, Cu, Zn, and Sr) were measured in 505 hair samples collected in 1981 from four (northern, inland, riverine, and coastal) villages of the Gidra who inhabit the lowland of Papua New Guinea. To compare the dietary element intakes with the hair element concentrations, the elimination of elements from hair by washing was first examined. Elimination rates by washing markedly differed from elem…
Compositional character of Papuan foods
In 78 food samples collected in the Papuan lowland, concentrations of major nutrients and trace elements (Na, Mg, A1, P, K, Ca, V, Cr, Mn, Fe, Ni, Cu, Zn, Sr, Cd, Hg, and Pb) were measured. Principal components analysis of local foods distinguished animal foods from plant foods: factor 1 had large positive loadings on protein, Na, P, Zn, and Hg contents and negative on carbohydrate content, and factor 2, positively on Mg, Ca, Mn, and Sr contents.…
Element intake of the Gidra in lowland Papua
Intake of 17 elements (Na, Mg, Al, P, K, Ca, V, Cr, Mn, Fe, Ni, Cu, Zn Sr, Cd, Hg and Pb) was estimated in four villages of the Gidra in lowland Papua New Guinea. Among these elements, inter‐village variation of intake was relatively large for Na, Al, V, Fe, Ni, Cd, Hg and Pb. The variation was attributed to the different concentrations in foods and drinking water, and the differences in food consumption by different villages. Compared to the int…
Grip strength and body composition of the Gidra Papuans in relation to ecological conditions
Maximum grip strength and body composition were measured in 136 Gidra-speaking adults in Papua New Guinea. The subjects inhabited two ecologically contrasting villages, one observing traditional ways of living and one influenced by modernization. Grip strength correlates with fat-free mass and body weight in all sex/village groups. Grip strength is greater in modernized villagers than in traditional villagers, but grip strength per unit body weig…
Salt consumption, body fatness and blood pressure of the Gidra in lowland Papua
The Gidra population in lowland Papua New Guinea, having lived as a no‐salt culture, is now subjected to modernization. In 1981, salt consumption, body fatness and blood pressures were measured for people in four ecologically different villages. Daily salt consumption of individuals was estimated from the sodium level per unit weight of creatinine in the morning urine and the daily urinary excretion of creatinine (estimation from fat free mass). …
Diversity and change of food consumption and nutrient intake among the Gidra in Lowland Papua
Food consumption and nutrient intake of the Gidra in lowland Papua, who number 1,850 and inhabit 13 villages, were analyzed by compilation of five two‐week (or twelve‐day) records, in a single village in 1971 and in four different villages (including the above village) in 1981. The nutrient intake of the Gidra varied both over time and among the villages. Difference in food consumption patterns included different proportions of plant staples such…
Composition of local and purchased foods consumed by the Gidra in Lowland Papua
Seventy‐eight foods (70 locally exploited and 8 purchased) consumed by the Gidra in lowland Papua were sampled and their nutrient compositions and metal concentrations were determined. Because local food samples were collected in the state in which they were normally eaten by the villagers, the water content of several of our samples, especially of sago flour, was much greater than that in the literature. The variation of protein and energy conte…
Brief communication
Archaeological, linguistic, and genetic studies show that Austronesian (AN)-speaking Polynesian ancestors came from Asia/Taiwan to the Bismarck Archipelago in Near Oceania more than 3,600 years ago, and then expanded into Remote Oceania. However, it remains unclear whether they extensively mixed with indigenous Melanesians who had populated the Bismarck Archipelago before their arrival. To examine the extent of admixture between Polynesian ancest…
Long-term subsistence adaptation to the diversified Papua New Guinea environment
Health and Survival in Modernizing Papua New Guinea Societies
In developed countries, deaths from infectious diseases have decreased and those from chronic diseases have increased with modernization. In many developing countries which are undergoing rapid modernization, these changes have been accelerated, with marked variation from population to population. A typical pattern is observed in the risks of chronic diseases, like cardiovascular disorders and diabetic mellitus, which are closely associated with …
Evaluation of Nutritional Adaptation in the Field
Biochemical analyses of urine specimens, which can be collected more easily than blood specimens in the field, provide information on the nutritional status of the subjects with regard to proteins and micronutrients. In particular, ingested protein passes through a body nitrogen pool and is excreted mostly into urine in the form of urea nitrogen. According to a newly developed filter paper method, in which a small amount of urine specimen (100-12…
Physical Characteristics of Okinawan Diving-Fishers in Relation to Work History
Thirteen anthropometric and physiological measurements of 84 male diving-fishers in Ishigaki City, Okinawa Prefecture were conducted. The first comparison was between the present data and the corresponding data of six other groups of Japanese muscular workers, and the second focused upon the differences within the Ishigaki diving-fishers in relation to their work history. The Ishigaki diving-fishers were characterized by larger biceps circumferen…
Composition of local and purchased foods consumed by the Gidra in Lowland Papua
Seventy‐eight foods (70 locally exploited and 8 purchased) consumed by the Gidra in lowland Papua were sampled and their nutrient compositions and metal concentrations were determined. Because local food samples were collected in the state in which they were normally eaten by the villagers, the water content of several of our samples, especially of sago flour, was much greater than that in the literature. The variation of protein and energy conte…
Diversity and change of food consumption and nutrient intake among the Gidra in Lowland Papua
Food consumption and nutrient intake of the Gidra in lowland Papua, who number 1,850 and inhabit 13 villages, were analyzed by compilation of five two‐week (or twelve‐day) records, in a single village in 1971 and in four different villages (including the above village) in 1981. The nutrient intake of the Gidra varied both over time and among the villages. Difference in food consumption patterns included different proportions of plant staples such…
Grip strength and body composition of the Gidra Papuans in relation to ecological conditions
Maximum grip strength and body composition were measured in 136 Gidra-speaking adults in Papua New Guinea. The subjects inhabited two ecologically contrasting villages, one observing traditional ways of living and one influenced by modernization. Grip strength correlates with fat-free mass and body weight in all sex/village groups. Grip strength is greater in modernized villagers than in traditional villagers, but grip strength per unit body weig…
Salt consumption, body fatness and blood pressure of the Gidra in lowland Papua
The Gidra population in lowland Papua New Guinea, having lived as a no‐salt culture, is now subjected to modernization. In 1981, salt consumption, body fatness and blood pressures were measured for people in four ecologically different villages. Daily salt consumption of individuals was estimated from the sodium level per unit weight of creatinine in the morning urine and the daily urinary excretion of creatinine (estimation from fat free mass). …
Compositional character of Papuan foods
In 78 food samples collected in the Papuan lowland, concentrations of major nutrients and trace elements (Na, Mg, A1, P, K, Ca, V, Cr, Mn, Fe, Ni, Cu, Zn, Sr, Cd, Hg, and Pb) were measured. Principal components analysis of local foods distinguished animal foods from plant foods: factor 1 had large positive loadings on protein, Na, P, Zn, and Hg contents and negative on carbohydrate content, and factor 2, positively on Mg, Ca, Mn, and Sr contents.…
Element intake of the Gidra in lowland Papua
Intake of 17 elements (Na, Mg, Al, P, K, Ca, V, Cr, Mn, Fe, Ni, Cu, Zn Sr, Cd, Hg and Pb) was estimated in four villages of the Gidra in lowland Papua New Guinea. Among these elements, inter‐village variation of intake was relatively large for Na, Al, V, Fe, Ni, Cd, Hg and Pb. The variation was attributed to the different concentrations in foods and drinking water, and the differences in food consumption by different villages. Compared to the int…
Hair element concentrations of the Gidra in lowland Papua
Concentrations of 11 elements (Na, Mg, Al, P, K, Ca, Mn, Fe, Cu, Zn, and Sr) were measured in 505 hair samples collected in 1981 from four (northern, inland, riverine, and coastal) villages of the Gidra who inhabit the lowland of Papua New Guinea. To compare the dietary element intakes with the hair element concentrations, the elimination of elements from hair by washing was first examined. Elimination rates by washing markedly differed from elem…
Carbon and nitrogen isotopic characterization for Papua New Guinea foods
Stable carbon and nitrogen isotope ratios of the animal and plant food of the Gidra, who inhabit lowland Papua New Guinea and subsist mainly on hunting, gathering and horticulture, were measured to characterize the nutritional input of carbon and nitrogen of the Gidra. All the staple plant foods of the Gidra, such as sago and tuberous crops, were classified as C3 plants from their 13C/12C ratios (δ13C). The δ13C of the terrestrial mammals varied …
Dietary selenium intake of the Gidra, Papua New Guinea
Selenium (Se) concentrations in the food of the Gidra‐speaking people of Papua New Guinea were measured by fluorometry. Animal foods contained Se in larger concentrations than plant foods. Animal foods of aquatic origin contained more Se than those of terrestrial origin. Stepwise multiple regression analysis revealed an association between Se and the animal's mercury content. Se concentrations in rice and wheat flour, which were imported from out…
Serum mineral and trace element concentrations in the Gidra of lowland Papua new Guinea
Serum concentrations of 11 elements (Na, Mg, P, S, K, Ca, Fe, Cu, Zn, Sr and Se) in the adult populations of the Gidra in lowland Papua New Guinea were measured. The marked characteristic of the element profile in the Gidra was higher Cu and slightly lower Zn concentrations than those in developed countries. Zinc nutriture of the Gidra was judged to be marginally deficient, presumably because of their high intake of crude fiber and Fe, which are …
Evaluation of Nutritional Adaptation in the Field
Biochemical analyses of urine specimens, which can be collected more easily than blood specimens in the field, provide information on the nutritional status of the subjects with regard to proteins and micronutrients. In particular, ingested protein passes through a body nitrogen pool and is excreted mostly into urine in the form of urea nitrogen. According to a newly developed filter paper method, in which a small amount of urine specimen (100-12…
Long-term subsistence adaptation to the diversified Papua New Guinea environment
Health and Survival in Modernizing Papua New Guinea Societies
In developed countries, deaths from infectious diseases have decreased and those from chronic diseases have increased with modernization. In many developing countries which are undergoing rapid modernization, these changes have been accelerated, with marked variation from population to population. A typical pattern is observed in the risks of chronic diseases, like cardiovascular disorders and diabetic mellitus, which are closely associated with …
Stable carbon and nitrogen isotopic composition of diet and hair of Gidra‐speaking Papuans
The carbon and nitrogen stable isotopic composition of the scalp hair and diet of Gidra-speaking people in four villages in Papua New Guinea is presented. The isotopic composition of hair was measured, while that of the diet was estimated from food consumption survey data and the measured isotopic composition and protein and carbohydrate contents of food items. The average isotopic ratios of the hair samples and of the diet varied among the four …
Stable carbon and nitrogen isotopic composition of diet and hair of Gidra-speaking Papuans
The carbon and nitrogen stable isotopic composition of the scalp hair and diet of Gidra-speaking people in four villages in Papua New Guinea is presented. The isotopic composition of hair was measured, while that of the diet was estimated from food consumption survey data and the measured isotopic composition and protein and carbohydrate contents of food items. The average isotopic ratios of the hair samples and of the diet varied among the four …
Cardiovascular risk factors of migrants in Port Moresby from the highlands and island villages, Papua New Guinea
This study examined cardiovascular disease (CVD) risk factors, i.e., obesity, blood pressures, and serum lipoproteins and apoproteins, in relation to sociocultural characteristics in two rural-urban migrant populations (n = 173 adult males and females) in Port Moresby, the capital of Papua New Guinea. Tari migrants from the highlands and Balopa migrants from the islands differ genetically. More importantly, the lifestyle of the latter is more Wes…
HLA-DRB1 Polymorphism of Balopa Islanders in Papua New Guinea
Perelik, Solang, and Mouk villages are located in Balopa islands of Papua New Guinea (PNG). It is known that languages spoken in Balopa belong to the same family of Austronesian languages, but the language of Mouk is different from others at a sub-family level. Most of Balopa islanders have subsisted mainly on horticulture and reef fishing, while Mouk villagers have depended on fishing and trading. In order to investigate the genetic similarities…
Gender Difference in Daily Time and Space Use Among Bangladeshi Villagers Under Arsenic Hazard
The compact spot-check method was applied to elucidate the daily time and space use patterns of 121 adults from a Bangladeshi village in which the authors had previously found more skin manifestations due to arsenic poisoning in males than females. The analysis of 2178 spot-check data, which were obtained over a net period of 2 days, highlighted that farming and cash-earning activities were almost exclusively conducted by males. This is probably …
No difference in serum leptin concentrations between urban-dwelling Austronesians and Non-Austronesians in Papua New Guinea
Pacific Islands populations can be broadly divided into Austronesians (AN) and Non-Austronesians (NAN); obesity and type 2 diabetes are prevalent in the former, although leptin levels in both groups have seldom been investigated. Thirty-seven (20 male and 17 female) adult pairs, matched by age and percent body fat, from AN-speaking Balopa and NAN-speaking Huli, all of whom migrated to settle in Port Moresby, the capital of Papua New Guinea, were …
Anthropometry of 5–19-year-old Tongan children with special interest in the high prevalence of obesity among adolescent girls
Among Tongan adolescents, obesity prevalence in girls was much higher than in boys, in association with fat accumulation in the former
HLA-DRB1 polymorphism on Ha'ano island of the Kingdom of Tonga
HLA-DRB1 polymorphism was investigated by molecular DNA-based typing in 37 Tongans living on Ha’ano island of the Ha’apai group. The predominant HLA-DRB1 alleles were DRB1*0901 (20.3%) and DRB1*0403 (18.9%). A principal component analysis of the DRB1 allele frequencies discriminated between the Polynesians and other Oceanian populations, including Melanesians, Micronesians, and Australian Aborigines. Both present and previous studies have shown t…
Brief communication
Archaeological, linguistic, and genetic studies show that Austronesian (AN)-speaking Polynesian ancestors came from Asia/Taiwan to the Bismarck Archipelago in Near Oceania more than 3,600 years ago, and then expanded into Remote Oceania. However, it remains unclear whether they extensively mixed with indigenous Melanesians who had populated the Bismarck Archipelago before their arrival. To examine the extent of admixture between Polynesian ancest…
DRD4 VNTR polymorphism in Oceanic populations
To study the origin of Polynesians and the gene flow from Polynesian ancestors to indigenous Melanesians, a 48-bp variable number of tandem repeats (VNTR) in exon 3 of the dopamine D4 receptor (DRD4) gene was investigated for six Austronesian (AN)-speaking populations—two in Tonga (Nuku’alofa and Ha’apai), three in Solomon Islands (Munda, Paradise, and Rawaki, of whom Rawaki was a Micronesian migrant group), and one in Papua New Guinea (Balopa), …
Reduced morning cortisol concentration in saliva was associated with obesity
OBJECTIVES: This study investigated morning salivary cortisol concentration in relation to total body fat composition among community-dwelling Papua New Guinean adults. METHODS: In addition to demographic and anthropometric measurements, saliva was collected in a single morning from 478 residents in Eastern Highlands Province and Madang Province. RESULTS: After adjusting for age, region, and occupation, the morning salivary cortisol concentration…
Biology (21 works) · Medicine (12 works) · New guinea (12 works) · Demography (11 works) · Chemistry (10 works) · Geography (10 works) · Ecology (9 works) · Animal science (8 works) · Sociology (8 works) · Ethnology (7 works)