scholarly journals Chemical compositions of the essential oils of inflorescence and vegetative aerial parts of Elsholtzia blanda (Benth.) Benth. (Lamiales: Lamiaceae) from Meghalaya, North-East India

2017 ◽  
Vol 4 (7) ◽  
pp. 19-23
Author(s):  
Rumi Kotoky ◽  
Siddhartha Pratim Saikia ◽  
Bithika Chaliha ◽  
Subhan Chandra Nath
Keyword(s):  
Compositional Analysis ◽  
Chemical Compositions ◽  
North East India ◽  
Plant Parts ◽  
North East ◽  
Aerial Parts ◽  
Significant Difference ◽  
Linalool Oxide ◽  
First Time ◽  
Inflorescence Part

The compositional analysis of essential oil content in inflorescence and vegetative aerial parts of Elsholtzia blanda Benth. (Lamiales: Lamiaceae) growing wild in Meghalaya,North-East India were studied by GC and GC-MS. A total of 30 and 17 components representing 96.9%-98.3% and 92.6%-92.8% of the total oils from the inflorescence and vegetative aerial parts, respectively, were identified. Significant difference in composition of oils were observed between the two plant parts; 15 components detected in the oil of inflorescence were lacking in the oil of vegetative aerial parts, while two components present in the oil of vegetative aerial parts were absent in the inflorescence oil. Linalool was the major component in oils of both inflorescence (77.3%-80.2%) and vegetative aerial parts (57.9%-62.9%). Trans- linalool oxide (8.4%-9.9%), cis-linalool oxide (8.3%-9.3%) and 3,7-dimethyl-1,5-octadiene-3,7-diol (4.7%-5.1%) were however found in higher amount in the oil of vegetative aerial parts compared to inflorescence. For the first time the composition of oil in the inflorescence part has been reported in this communication while the oil from vegetative aerial parts containing linalool as the major component (44.9%) was although reported earlier but comparatively higher percentage of same was observed in vegetative aerial part (57.9%-62.9%) and inflorescence (77.3%-80.2%) in the present investigation with the plants from Meghalaya, India.

scholarly journals Antiplasmodial Activity of Gnetum gnemon Leaves and Compounds Isolated from them

2018 ◽  
Vol 13 (10) ◽  
pp. 1934578X1801301
Author(s):  
Partha P Dutta ◽  
Manobjyoti Bordoloi ◽  
Sonali Roy ◽  
Bardwi Narzary ◽  
Kabita Gogoi ◽  
...  
Keyword(s):  
Ethanol Extract ◽  
Antiplasmodial Activity ◽  
Future Studies ◽  
North East India ◽  
North East ◽  
Gnetum Gnemon ◽  
Preliminary Study ◽  
Low Cytotoxicity ◽  
First Time

Gnetum gnemon L. (Gnetaceae) is used traditionally for treating malaria related fever by indigenous people of North East India. In our preliminary study, the ethanol extract of G. gnemon leaves showed promising antiplamodial activity against Plasmodium falciparum chloroquine sensitive (3D7) strain in vitro with an IC50 value of 29.4 μg/mL. Therefore, it was further investigated, and by following a bioassay guided approach, 2,3-dihydroxypropyl icosanoate (1), oleic acid (2) and ursolic acid (3) were isolated for the first time from this plant. Compound 3 showed highest antiplasmodial activity with IC50 values of 4.0 and 6.0 μg/mL against chloroquine sensitive (3D7) and resistant (Dd2) strains of P. falciparum, respectively. The antiplasmodial activity of 1 (IC50 9.5 and 11.4 μg/mL) and 2 (IC50 17.6 and 21.1 μg/mL) was moderate. The isolated constituents showed low cytotoxicity against rat skeletal muscle (L6) and human cervical cancer (HeLa) cells. This is the first report on the antimalarial potential of G. gnemon and the isolated compounds may be responsible for its activity. The findings of the study are in line with the ethnopharmacological claim and can be possible leads for future studies.

scholarly journals Skin color variation: A study on Eastern and North East India

2019 ◽  
Vol 10 (3) ◽  
pp. 13-16
Author(s):  
Sumit Maitra ◽  
Diptendu Chatterjee ◽  
Arup Ratan Bandyopadhyay
Keyword(s):  
Ethnic Groups ◽  
Skin Color ◽  
Skin Pigmentation ◽  
Color Space ◽  
Color Variation ◽  
Phenotypic Traits ◽  
North East India ◽  
North East ◽  
Wide Range ◽  
Significant Difference

Background: Skin pigmentation is one of the most variable phenotypic traits and most noticeable of human polymorphisms. Skin pigmentation in humans is largely determined by the quantity and distribution of the pigment melanin. The literature review on skin color variation revealed a few works on skin pigmentation variation has been conducted in India from Southern, Western and Northern part. Aims and Objectives: To best of the knowledge, the present discourse is the first attempt to understand skin color variation from Eastern and North Eastern part of India among three populations. Materials and Methods: The present study consisted of 312 participants from Chakma and Tripuri groups of Tripura, North East India, and participants from Bengalee Hindu caste population from West Bengal. Skin color was measured by Konica Minolta CR-10 spectrophotometer which measures and quantifies the colors with a 3D color space (CIELAB) color space created by 3 axes. All the skin color measurements from each participant were taken from unexposed (underarm) left and right to get a mean and exposed (forehead) to sunlight. Results: The distribution of skin color variation among the three populations demonstrated significant (p<0.05) difference in lightness for unexposed and exposed indicating lightness in unexposed area. Furthermore, the present study revealed significant difference (p<0.05) in skin color among the ethnic groups across the body location and all three attributes (lightness, redness and yellowness). Conclusion: Generally, skin color variation may be elucidated by two main factors: individual differences in lightness and yellowness and by and large due to ethnicity, where diversity in redness is due to primarily due to different body locations. Variation in lightness have more characteristic probability. The present study first time reports the wide range of quantitative skin color variation among the three ethnic groups from Eastern and North East India and highest yellowness (b*) among the population from North East India.

scholarly journals A report on new chromosome number of three Dioscorea species

2019 ◽  
Vol 6 (2) ◽  
pp. 147-150
Author(s):  
Chiranjit Paul ◽  
Bimal Debnath
Keyword(s):  
Chromosome Number ◽  
Somatic Chromosome ◽  
Chromosome Count ◽  
Somatic Chromosome Number ◽  
Chromosome Counts ◽  
North East India ◽  
North East ◽  
Forest Belts ◽  
Dioscorea Species ◽  
First Time

Chromosomal study conducted in nine species of Dioscorea from different forest belts of Tripura revealed that their somatic chromosome number ranged from 2n=40 to 2n=60. The record of 2n=40 chromosome in the sexual phenotypes of Dioscorea hamiltonii, Dioscorea glabra and Dioscorea pubera are the first time report from Tripura, North East India. Moreover the somatic chromosome counts of 2n=60 in Dioscorea pentaphylla would be attributed as a new cytotype. However at the respective ploidy level no difference in somatic chromosome count was observed between their sexes.

Significance of Inter aorto-caval lymph nodes in gall bladder cancer management.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e16607-e16607
Author(s):  
Kishore Singh ◽  
Anurita Srivastava ◽  
Siddharth Srivastava ◽  
Aditi Aggarwal ◽  
Varshu Goel ◽  
...  
Keyword(s):  
Lymph Nodes ◽  
Radical Surgery ◽  
Radical Resection ◽  
Large Sample Size ◽  
North East India ◽  
Presenting Symptoms ◽  
Cancer Management ◽  
North East ◽  
Kaplan Meier ◽  
Significant Difference

e16607 Background: Gallbladder cancer (GBC) is one of the three leading cancer among women of North and North-east India. The age standardized rate (ASR) for GBC in women of North and north-east India are 11.8/100,000 population and 17.1/100,000 population respectively It is one of the most fatal cancer, characterized by early spread, both local as well as distant. Radical resection is associated with the highest control rates. Presence of inter-aorto-caval lymph nodes (IAC) during preoperative workup is designated as metastatic disease in GBC and radical surgery is deferred. This study attempts to confirm the validity of such an approach. Methods: Between January 2017 and December 2018, 178 patients of GBC were registered at our hospital. Of these, 108 patients with radiologically resectable disease were evaluated preoperatively with endoscopic ultrasound (EUS) to look for IAC lymph nodes lying below the level of the renal vein. Patients with IAC involvement were taken up for chemotherapy while the others underwent upfront surgery. Results: Mean age at presentation was 51.1 (±10.9) years with a female predominance (N = 77, 71.2%). Presenting symptoms were either pain (N = 91, 84.2%) or jaundice (N = 42, 38.8%) in majority cases. Patients with jaundice presented earlier with mean of 53.27 days (Range2-240 days) while those with pain presented at a mean of 71.5 days (1-360 days) prior to diagnosis. Pathologically positive IAC cases (n = 12) of resectable GBC received systemic therapy upfront rather than immediate radical surgery. Rest of the patients underwent surgical resection followed by adjuvant treatment as indicated. Mean follow up was 179 days with a mortality of 62%(n = 67). No significant difference was seen in the stage distribution in IAC positive versus negative group. Median survival with Kaplan Meier method of IAC positive patients was 239 days versus 190 days in IAC negative patients. Conclusions: IAC lymph node may not necessarily portend poor prognosis. It needs to be validated in large sample size.

Nematode parasites of invertebrates from Manipur, North East India (Diagnosis, keys and illustration)

Zootaxa ◽  
2011 ◽  
Vol 3107 (1) ◽  
pp. 1 ◽  
Author(s):  
M. MANJUR SHAH ◽  
N. MOHILAL ◽  
M. PRAMODINI ◽  
L. BINA ◽  
TH. HEMANANDA
Keyword(s):  
Present Report ◽  
Parasitic Nematodes ◽  
Key To Species ◽  
North East India ◽  
North East ◽  
Nematode Parasites ◽  
Time Out ◽  
First Time

The present report is based on findings of occasional survey work conducted from the region spanning over six years for the presence of insect parasitic nematodes under the superfamily Thelastomatoidea (Nematoda: Oxyurida), parasitic in invertebrate hosts. Out of five families recognized under the superfamily, the present report discusses the findings of four families from Manipur and its adjoining areas as well. For the first time, out of 15 taxa described in the text, seven species are described from the region, eight species reported. The findings of the study will help in understanding of the biodiversity status of insect parasitic nematodes of the region. Diagnosis of the genus, key to species and illustration with line diagrams and photomicrographs are provided in the manuscript.

scholarly journals Traditional Remedies for Ailments Prevalent Amongst the Thengal-Kacharis of Lakhimpur District, Assam, India

2016 ◽  
Vol 8 (4) ◽  
pp. 401-407
Author(s):  
Ankur Jyoti SAIKIA ◽  
Vipin PARKASH
Keyword(s):  
Chemical Analysis ◽  
Ethnic Group ◽  
Animal Species ◽  
North East India ◽  
Plant Parts ◽  
North East ◽  
Forestry Practices ◽  
Traditional Remedies ◽  
Plant Utilization ◽  
Plant Families

Assam, the ‘Gateway of North-East India’, is renowned for its phyto-diversity, myriad ethnic make-up and age-old tradition of indigenous healthcare. This paper documents the indigenous ethno-medicinal knowledge of the Thengal-Kachari tribesmen, who belong to the greater Bodo-Kachari ethnic group, residing in Lakhimpur district of Upper Assam. The information was collected through questionnaires in consultation with the tribal Bej’s (local healers). Plant and animal species were identified with the help of relevant standard literature and presented along with their part(s) used, method(s) of preparation and modes of administration in target diseases. About 30 species of plants, belonging to 22 plant families, and 4 species of animals belonging to 4 animal families, were collected and enumerated for their traditional usage in treatment of 13 diseases. With respect to usage, there were more plant parts (86.49%) utilized than animal parts (13.51%), of which aboveground phyto-biomass was used in bulk (64.71%) quantity, herbs being utilized in major proportion (14). The correlation of ethnomedicinal usage with Dr. Duke’s Phytochemical and Ethnobotanical database evidently points out the medicinal implication of data claimed by this tribe. The present study, thus, underlines the potential for further documentation of such ethno-medicines from local healers from the rest pockets of the region for further phyto-chemical analysis, forestry practices and biodiversity conservation studies pertaining to medicinal plant utilization by this hitherto less studied ethnic group.

scholarly journals Study on Lavender Essential Oil Chemical Compositions by GC-MS and Improved pGC

Molecules ◽  
2020 ◽  
Vol 25 (14) ◽  
pp. 3166 ◽  
Author(s):  
Guangyao Dong ◽  
Xiaohui Bai ◽  
Aoken Aimila ◽  
Haji Aisa ◽  
Maitinuer Maiwulanjiang
Keyword(s):  
Gas Chromatography ◽  
Essential Oil ◽  
Column Chromatography ◽  
Capillary Columns ◽  
Chemical Compositions ◽  
Lavandula Angustifolia ◽  
Aerial Parts ◽  
Preparative Gas Chromatography ◽  
The Cost ◽  
First Time

Lavender essential oil from the aerial parts of Lavandula angustifolia Mill. was analyzed by GC-MS equipped with three capillary columns of different polarities, which were HP-1, HP-5 ms and HP-INNOWax. A total of 40 compounds were identified by GC-MS, accounting for 92.03% of the total essential oil compositions. Nineteen monomers were separated by column chromatography and improved preparative gas chromatography (pGC), six of which could not be retrieved from the NIST 14 (National Institute of Standards and Technology, USA; 14th edition) library database. Fifteen compounds were identified for the first time in lavender essential oil. The improved pGC not only doubled the efficiency but also greatly reduced the cost.

scholarly journals Secondary Metabolites ofHypericum leptophyllumHochst., an Endemic Turkish Species

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Necdet Camas ◽  
Jolita Radusiene ◽  
Zydrunas Stanius ◽  
Omer Caliskan ◽  
Cuneyt Cirak
Keyword(s):  
Secondary Metabolites ◽  
Chlorogenic Acid ◽  
Room Temperature ◽  
Plant Tissues ◽  
Plant Materials ◽  
Plant Parts ◽  
Aerial Parts ◽  
Full Flowering ◽  
Metabolite Concentrations ◽  
First Time

In the present study, the presence of the phloroglucinol derivative hyperforin, the naphthodianthrones hypericin and pseudohypericin, the phenylpropane chlorogenic acid and the flavonoids rutin, hyperoside, kaempferol, isoquercetine, quercitrine, and quercetine was investigated inHypericum leptophyllumHochst., an endemic Turkish species for the first time. The aerial parts representing a total of 30 individuals were collected at full flowering and dissected into floral, leaf, and stem tissues. After being dried at room temperature, the plant materials were assayed for secondary metabolite concentrations by HPLC. Aerial plant parts accumulated chlorogenic acid, hyperoside, isoquercetine, quercitrine, and quercetine, but they did not accumulate hyperforin, hypericin, pseudohypericin, rutin, and kaempferol. Accumulation levels of the detected compounds varied with plant tissues. Such kind of data could be useful for elucidation of the chemotaxonomical significance of the corresponding compounds and phytochemical evaluation of this endemic species.

New data on the genus Barsine Walker, 1854 from India, with description of a new species (Lepidoptera: Erebidae: Arctiinae: Lithosiini)

Zootaxa ◽  
2018 ◽  
Vol 4425 (3) ◽  
pp. 456 ◽  
Author(s):  
RAHUL JOSHI ◽  
NAVNEET SINGH ◽  
ANTON V. VOLYNKIN
Keyword(s):  
New Species ◽  
Species Group ◽  
Female Genitalia ◽  
New Combinations ◽  
Male And Female ◽  
North East India ◽  
North East ◽  
First Time ◽  
A New Species

A new species, Barsine pseudoradians Joshi, Singh & Volynkin sp. nov. is described from North East India (Mizoram, Assam and Meghalaya) and Nepal. The new species belongs to the Barsine prominens (Moore) species-group and is compared with B. radians (Moore, 1878), B. pluma Černy, 2009, B. syntypica Swinhoe, 1906 and B. maculifasciata (Hampson, 1894). Barsine callida (Fang, 1991) is reported for the first time from India. Its comparison with the related Barsine mesortha (Hampson, 1898) is given. Two new combinations are established: Barsine callida (Fang, 1991), comb. nov. and Barsine germana (Rothschild, 1913), comb. nov. Adults, male and female genitalia of all the reviewed species are illustrated. 

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