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Biomedical subjects

B N Mukherjee

Publications and source records attributed to B N Mukherjee.

At least 37 records · Page 2Linked to original sources
PubMed1987

Distribution of Gm and Km allotypes among ten populations of Assam, India.

Serum samples from ten endogamous populations of Assam, India-Brahmins, Kalitas, Kaibartas, Muslims, Ahoms, Karbis, Kacharis, Sonowals, Chutiyas, and Rajbanshis-were typed for G1m (1, 2, 3, 17), G3m (5, 10, 11, 13, 14, 15, 16, 21, 26), and Km (1). Among Brahmins, Kalitas, Kaibartas, Muslims, Ahoms, Sonowals, Chutiyas, and Rajbanshis, five different Gm haplotypes were found: Gm1,17;21,26; Gm1,17;10,11,13,15,16; Gm1,2,17;21,26; Gm1,3;5,10,11,13,14,26; and Gm3;5,10,11,13,14,26. Kacharis and Karbis show only four of these haplotypes: Gm3;5,10,11,13,14,26 is absent among them. The intergroup variability in the distribution of these haplotypes is considerable, which can be explained by the ethnohistory of these populations. Genetic distance analysis, in which five Chinese population samples were included, revealed the existence of three main clusters: 1) North and Central Chinese; 2) Kalitas, Kaibartas, Chutiyas, Rajbanshis, Muslims, and Brahmins; and 3) Ahoms, Sonowals, Kacharis, South Chinese, and Karbis. The clusters suggest some genetic relation between these four Assamese populations and South Chinese, which is again understandable considering the ethnohistory of the populations of Northeast India. In the Km system, too, a remarkable variability is seen in distribution of phenotype and allele frequency.

Asian People↗
PubMed1987

Population genetic study in ten endogamous groups of West Bengal, India.

Ten endogamous population groups of West Bengal (India)--Rabhas, Garos, Mechs, Rajbanshis, Jalia Kaibartas, Bagdis, Lodhas, Mundas, Brahmins, Vaidyas--have been typed for twelve polymorphic systems: ABO, Gm, Km, Hp, Cp, Tf, Alb, Hb, aP, EsD, AK and PGM1. The results are compared with those obtained on other Indian populations. Serological and anthropometric data, which have been included into population comparisons, reveal a considerable genetic variability of the groups under study. This variability is obviously connected with the population history of West Bengal.

Blood Group Antigens↗
PubMed1986

PGM1 subtype polymorphism in 14 endogamous Dravidian-speaking populations of South India.

Red cell hemolysates from 1,004 persons belonging to 14 population groups drawn from four South Indian states, Andhra Pradesh, Tamil Nadu, Karnataka, and Kerala, were tested for PGM1 subtypes. The groups are characterized by a high frequency of phenotype 1+1+ (range 36.98-71.64%) and the allele 1+ (range 60-79%). The groups exhibit marked heterogeneity for PGM1 locus. The results show a clear demarcation between tribes and Brahmin groups.

Alleles↗
PubMed1986

Gene differentiation among ten endogamous groups of West Bengal, India.

Ten endogamous populations of West Bengal, India have been surveyed for genetic variation in 12 systems. These populations encompass all social ranks in the caste hierarchy and cover almost the entire geographic area of the state. Gene diversity analysis suggests that these groups exhibit significant allele frequency variation at all but three loci. The overall genetic difference is not, however, in accord with the classification based on caste. Two low-ranking scheduled caste groups are, in fact, in close proximity with the high-caste ones, suggesting evidence of past generations of gene flow among them. Three different clusters of groups emerge from the present data, providing support for the anthropologic assertion that in Bengal Proto-Australoid, Caucasoid, and Mongoloid racial elements generally coexist. However, these three components are not uniformly present in all groups. Geographic separation of the groups is a strong determinant of the gene differentiation that exists among these populations.

Alleles↗
PubMed1986

Patterns of social and geographical distribution of transferrin subtype polymorphism in India.

Transferrin subtypes have been determined by isoelectric focussing of sera from 536 individuals belonging to 9 South Indian populations: Vaidic Brahmins and Vaysya from Andhra Pradesh; Havik Brahmin, Lingayat and Jenu Kuruba from Karnataka; Namboodri Brahmin, Ezhava and Urali from Kerala; and Kallan from Tamil Nadu. C1 and C2 alleles are present in all the populations, whereas C4 is totally lacking and D1 occurs only in 3 populations. The highest frequency of C1 gene (0.814) is found in Havik Brahmins while C2 shows highest incidence among the tribe Urali. C1 occurs in slightly higher frequencies among the Hindu castes (range 0.724-0.814) than the tribal populations (range 0.698-0.703). C2 is more common in the tribes (range 0.281-0.290) compared to the castes (range 0.186-0.269). Strikingly the C3 allele is absent in all the 3 Brahmin samples but is present in 3 non-Brahmin castes and a tribal population. An examination of all the available data on Tf subtypes in India reveals no clear-cut decreasing north-south gradient in C1 gene as suggested by Walter et al. (1983). Interestingly, however, the same is observed when tribal populations are considered separately. Among the castes, in fact, the opposite trend (increasing north to south) is seen. It is suggested that the basic postulate of Walter et al. (1983) will hold good only among the tribal populations of the country. The data do not fully support the observation of Kamboh and Kirk (1983) that C3 is a specific marker of European (Caucasian) populations.

Alleles↗
PubMed1986

Genetic markers among Meiteis and Brahmins of Manipur, India.

Genetic polymorphism of 16 red-cell antigens, enzymes, serum proteins and Hb variants was investigated in 214 male and female individuals belonging to the Meiteis and a Brahmin caste group living in Imphal (Manipur, Northeast India). Ethnohistorical records suggest that the Meiteis are of Mongoloid origin, while the original Brahmin settlers represent the easternmost part of the so-called Caucasoids. The markers studied are: A1A2BO, MNSs, Rh-system, Duffy, Diego; Gm, Km, Gc, Hp, Tf, Cp; Hb; aP, AK, EsD and LDH. The comparison between the two groups on the basis of the markers studied showed that the Meiteis and Brahmins are very close to each other with respect to most of the loci except Gm, EsD and Hb, where significant statistical differences were found.

Blood Group Antigens↗
PubMed1986

Investigations on the variability of haptoglobin, transferrin and Gc polymorphisms in Assam, India.

Ten different population groups of Assam - Brahmins, Kalitas, Kaibartas, Rajbanshis, Muslims, Ahoms, Chutias, Kacharis, Karbis and Sandwals - have been typed for haptoglobin and for transferrin (Tf) and Gc subtype polymorphisms. Tf and Gc allele subtype frequencies show a considerable inter-population heterogeneity. From genetic distance analysis it appears that the populations under study form some distinct clusters, which can be explained by the historical and ethnic affiliations of these populations. Especially the distribution of Gc subtype alleles reveals some Mongoloid admixture among Assamese populations, which is reflected by the presence of Gc1A8 alleles in them.

Gene Frequency↗
PubMed1983

Incidence of hepatitis B (Australia) antigen among three communities in malarial Western Maharashtra, India.

The incidence of hepatitis B surface antigen (HBs Ag, Australia antigen) has been determined in three communities residing in an endemic malarial region in Western Maharashtra. A high incidence (5.92%) is found in the Marathas, a socially well-placed community, as compared to Nava-Buddhas (2.62%) and scheduled castes (1.63%) which are socially low-placed communities. A higher incidence (8.91%) among the Maratha females is a surprising observation as the males have been shown to be predominant among HBs Ag carriers in most world populations. A positive association of HBs Ag and the anthropometric traits, skinfold thickness of biceps and triceps, has been observed in the present study. The results demonstrate that other factor(s) (e.g. immunological) besides malarial infection may be involved in the maintenance of a high HBs Ag frequency in Western Maharashtra.

Body Constitution↗
PubMed1982

Red cell enzyme polymorphism: gene differentiation in three populations of Maharashtra, India.

Blood samples of 1,266 individuals were collected from three caste populations; Nava Budha (Mahar), Maratha, and a mixed group of Scheduled castes from each of three districts of Maharashtra, Nagpur, Akola, and Thane. The samples were tested for 12 enzyme systems, viz., AcPh, AK, CA-I, CA-II, Est-D, LDH, MDH, Oxidase, PGM-1, PGM-2, 6-PGD, and PHI. The gene frequencies of these loci are within the ranges observed among the Indian populations so far studied. The total differences in gene frequencies for each polymorphic locus was partitioned into three components, i.e., the differences between caste populations, the differences between regions, and the differences due to interaction between caste populations and regions. The results show that besides caste variation for two loci, Est-D and PGM-1, the gene frequencies for AK, Est-D, and G-6PD loci have different geographical distributions.

Erythrocytes↗
PubMed1982

Effects of Hb types and G-6-PD deficiency on height, weight and skinfolds: a study on Indian population.

In this paper the effect of age, Hb types and G-6-PD deficiency on height, weight and skinfold thickness among 1720 subjects belonging to Nava-Budha, Maratha and a mixed Scheduled caste of Maharashtra, India, have been examined using two models of analysis of variance. In the first model the factors used for explaining the variation are communities, age, sex, Hb types based on the total sample. In the second model another factor, G-6-PD deficiency, was introduced and only the male sample (n = 852) was considered. The age groups (assessed), sex and communities contribute highly significantly to the variation in weight. Variation in communities, age and sex is highly significant for variations in height and the three skinfold measurements. The effect of variation in Hb types is more than random for height and significant for biceps and triceps thicknesses. G-6-PD deficiency causes significant variation in height and the three skinfold measurements.

Adult↗
PubMed1980

Distribution of ABO and Rh (D) blood groups among four endogamous groups of Andhra Pradesh.

The ABO and Rh (D) blood groups have been examined in 568 individuals of 4 endogamous groups, viz, Mala, Yerukula, Kapu and Vadagalai Ayangar Brahmin. In the ABO blood group system, all the other groups except for the Yerukula show the general Asiatic trend (O greater than B greater than A). All individuals examined among the Vadagalai Ayangar Brahmins were Rh (D)-positive. Other populations show a low frequency of d allele.

ABO Blood-Group System↗
PubMed1978

Red cell glucose-6-phosphate dehydrogenase deficiency and haemoglobin variants among ten endogamous groups of Maharshtra and West Bengal.

Over 900 individuals from ten endogamous groups in the Indian states of Maharashtra and West Bengal were studied for G-6-PD deficiency and haemoglobin variants. The incidence of G-6-PD varied from nil to 17.3%, while that of Hb-S varied from nil to 22.3%. In general, the tribal populations of Maharashtra are characterized by the presence of a high incidence of both Hb-S and G-6-PD deficiency. The caste Hindus showed an absence of Hb-S and rather low G-6-PD deficiency. Immigrant Parsis possessed the highest incidence of G-6-PD deficiency (17.3%).

Gene Frequency↗